WO2015088063A1 - Method of aligning drill bit for drill bit grinder - Google Patents

Abstract

The present invention relates to a method of aligning a drill bit for a drill bit grinder and, more specifically, to a method of horizontally aligning the cutting tip of a drill bit in order to grind the drill bit. The method of aligning a drill bit for a drill bit grinder according to the present invention is characterized in that the drill bit is aligned to grind the cutting tip of the drill bit by calculating a rotation angle of the drill bit using the angle to photograph the drill bit relative to the horizontal line and the distance from the end of the drill bit of the photographed image to a first groove and a second groove, and rotating the drill bit by the rotation angle of the drill bit.

Description

How to arrange the drill bit for the drill bit grinder

The present invention relates to a drill bit alignment method for a drill bit grinding machine, and more particularly, to a method for horizontally aligning a cutting tip of a drill bit for grinding a drill bit.

An electronic product is composed of many electronic components and circuit boards, and has at least one circuit board. The function of the circuit board is to allow various electronic components to be electrically connected to each other.

In general, a printed circuit board is coated with an insulator by implementing electrical wiring for microchips or electronic components on the board with copper wire on one or both surfaces of a board made of various thermosetting resins.

Recently, due to advances in electronic technology and the development of new and diverse high-tech industries, more functionally developed electronic products are being produced, and at the same time, electronic products are becoming lighter, thinner and smaller than before.

Therefore, circuit boards of various electronic products are also thinned and miniaturized, and printed circuit boards used in most of these electronic products are equipped with various circuit components including smaller microchips.

Recently, multilayer printed circuit boards are mainly used to further miniaturize circuit boards, and the perforation process associated with circuit boards is further refined.

The circuit board is formed with a large number of fine holes for installing various components, including microchips, which connect various parts of the circuit board and connect electrical circuits of different layers to traces. It is used to provide a reference point for continuous machining.

Accordingly, the processing technology for the hole and the appearance of the circuit board is required to be precision in micro units. To meet these demands, tools such as drill bits, end mill bits, and router bits for hole and slotting circuit boards are also required to have micro bits with very small diameters. Usually, the micro bit is a tool that drills holes for placing chips on a circuit board, and a diameter of 0.05 mm to 3 mm is mainly used.

As such, the diameter of the hole for drilling the printed circuit board is very small, and the drill bit for drilling the hole should have a cutting tip having a very small diameter. Therefore, the micro drill bit is mainly made of a very hard wear resistant material such as tungsten carbide.

Although the micro drill bit has a very small diameter in appearance even though it has high strength and wear resistance, after drilling a certain number of holes, the performance of the drill bit decreases, and it is possible to maintain a tolerance against the reference diameter for the hole. Not as sharp as

Therefore, it is common to calculate the degree of dullness of the drill bit and based on this wear rate, the drill bit is replaced after drilling a certain number of holes, and the quantity of waste is large.

However, micro drill bits with extremely small diameter cutting tips are difficult to manufacture because they are made of a hard material such as tungsten carbide, which increases the cost of production parts due to the waste of expensive micro drill bits of expensive materials. Increasing production leads to an increase in production prices, which is a major obstacle to improving price competitiveness.

Therefore, many methods have been implemented to reduce the amount of waste of such micro drill bits, and one of the methods for reducing the amount of waste is being regenerated through regrinding. Here, regeneration means that when the cutting tip of the worn micro drill bit becomes dull, it is regrinded through the polishing apparatus rather than discarding the drill bit, which is the same as the regeneration of the conventional drill bit and is advantageous in terms of cost.

Therefore, devices for regrinding have been developed, and a method of aligning and polishing drill bits for polishing has been implemented, but the camera for measurement should always be in a horizontal position, and the cutting length due to polishing cannot be expected due to over-polishing. There was a problem.

In addition, due to the characteristics of the drill bit to be drilled to the end, there are many cases of foreign matter in the spiral groove of the end of the drill bit, there was a problem that the error occurs because the previous measurement method is calculated through the end.

An object of the present invention is to solve the problems as described above, drill bit grinding machine that can measure and align the fixed state of the drill bit not only horizontally, but also 360 degrees regardless of the angle of the camera to measure To provide a drill bit alignment method.

Another object of the present invention is to provide a drill bit aligning method for a drill bit grinder which can align the drill bit even if there are foreign substances in the spiral groove of the drill bit.

It is still another object of the present invention to provide a drill bit alignment method for a drill bit grinding machine capable of aligning the drill bit according to the expected polishing distance.

Drill bit aligning method for a drill bit grinding machine according to the present invention to achieve the above object, in aligning the drill bit to polish the cutting tip of the drill bit, the angle (B) for photographing the drill bit on the basis of the horizontal line And the rotation angle θ of the drill bit by using the angle B for photographing the drill bit and the distance from the end of the drill bit of the photographed image to the first groove P1 and the second groove P2. It calculates by 1), characterized in that to arrange the drill bit by rotating the drill bit by the rotation angle (θ) of the drill bit.

In addition, the calculation formula (1) further includes the following correction formula (A1) according to the expected grinding distance (A) of the drill bit, the rotation angle (θ) of the drill bit by the following formula (2) It is characterized by calculating.

Further, in aligning the drill bit to polish the cutting tip of the drill bit, the angle (B) of photographing the drill bit, the angle (B) of photographing the drill bit, and the drill bit of the photographed image in alignment with the horizontal line The rotation angle θ of the drill bit is calculated by the following equation (3) using the distance between the end grooves P2 and the next groove P3 at the end, and the rotation angle θ of the drill bit. And aligning the drill bit by rotating it.

In addition, the calculation formula (3) further includes the following correction formula (A2) according to the expected grinding distance (A) of the drill bit, and the rotation angle (θ) of the drill bit by the following expression (4). It is characterized by calculating.

Further, in aligning the drill bit to polish the cutting tip of the drill bit, the angle (B) of photographing the drill bit, the angle (B) of photographing the drill bit, and the drill bit of the photographed image in alignment with the horizontal line Using the distance between the first groove P1 and the second groove P2 at the end, the operation value C is calculated by the following equation (5), and the distance value from the end to the first groove P1 is calculated. It is characterized by rotating the drill bit until (C).

In addition, the calculation of equation (5) further includes the following correction equation (A3) according to the expected grinding distance (A) of the drill bit, and calculating the calculation value (C) by the following expression (6). It features.

Further, in aligning the drill bit to polish the cutting tip of the drill bit, the angle (B) of photographing the drill bit, the angle (B) of photographing the drill bit, and the drill bit of the photographed image in alignment with the horizontal line The calculated value C1 is calculated by the following formula (7a) using the distance between the arbitrary groove P2 and the next groove P3 at the end, and the calculated value C2 by the following formula (7b). The drill bit is rotated and aligned until the previous operation value C1 is reached.

Furthermore, the calculation of equation (7a) further includes the following correction equation (A4) according to the expected grinding distance (A) of the drill bit, and calculating the calculation value (C1) by the following expression (8). It features.

As described above, according to the drill bit alignment method for the drill bit grinding machine according to the present invention, the effect of measuring and aligning the drill bit at various angles as well as the horizontal direction is obtained.

In addition, the present invention obtains the effect of being able to align even if there are foreign substances in the spiral groove of the drill bit.

In addition, the present invention has the effect that the drill bit can be aligned according to the expected polishing distance.

1: Bit Chuck

2: camera

3: polishing pad

10: drill bit

11: cutting edge

1 is a plan view showing a conventional polishing apparatus.

Figure 2 is an image and a front view according to the shooting angle of the camera.

Figure 3 is an explanatory view when the camera is located at an angle of 45 degrees lower of the drill bit alignment method for a drill bit grinding machine according to the present invention.

Figure 4 is an explanatory view when the camera is located at an angle of 45 degrees upper of the drill bit alignment method for a drill bit grinding machine according to the present invention.

Figure 5 is an explanatory view when the camera is located at an angle of the lower 90 degrees of the drill bit alignment method for a drill bit grinding machine according to the present invention.

Figure 6 is an explanatory diagram when the camera is located at an angle of 135 degrees below the drill bit alignment method for a drill bit grinding machine according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a plan view showing a conventional polishing apparatus, Figure 2 is an image and a front view according to the photographing angle of the camera, Figure 3 is a drill bit aligning method for a drill bit grinding machine according to the invention the camera at an angle of 45 degrees lower 4 is an explanatory diagram when the camera is positioned at an angle of 45 degrees above the drill bit alignment method for the drill bit grinding machine according to the present invention, and FIG. 5 is for the drill bit grinding machine according to the present invention. It is explanatory drawing when a camera is located in the lower 90 degree angle among the drill bit alignment methods, and FIG. 6 is explanatory drawing when the camera is located in the lower 135 degree angle of the drill bit alignment method for the drill bit grinding machines which concerns on this invention. .

As shown in FIG. 1, the conventional polishing apparatus includes a bit chuck 1 for fixing and rotating the drill bit 10, a camera 2 for photographing the drill bit 10, and the drill bit 10. The drill bit 10 is polished through the configuration of the polishing pad 3 for polishing ().

In addition, by calculating through the image of the drill bit 10 taken through the camera 2 to infer the rotation angle mounted with the drill bit 10, by rotating the bit chuck 1 drill bit 10 Will be rotated at an easy angle for polishing.

However, in the conventional method, there is a problem that the camera 2 should always photograph and measure the drill bit 10 in a horizontal direction.

As shown in Figure 2, (e1) ~ (e5) is an image taken in the clockwise direction of the side of the drill bit 10 at 45 degrees intervals from the horizontal direction, the drill bit 10 is related to the photographed angle Grooves are always observed at constant pitch intervals.

In addition, (f) observed the cutting edge 11 of a drill bit from the front.

Therefore, the drill bit alignment method for the drill bit grinding machine according to the present invention calculates through the position of the groove to infer the rotation angle (θ) of a predetermined drill bit, and the drill bit 10 of the predetermined drill bit The cutting edge 11 is aligned by rotating at the rotation angle θ.

In addition, the angle B for photographing the drill bit may have a fixed value measured when the camera 2 is fixed, or may be measured through a sensor (not shown) for measuring the inclination of the camera 2. have.

The sensor may be measured outside the camera 2 or included inside the camera 2.

In addition, the angle B for photographing the drill bit of the camera 2 is defined clockwise with respect to the horizontal line when the drill bit is viewed from the front.

Therefore, the angle of 1 to 180 degrees clockwise from the right horizontal line, and the angle of 1 to 180 degrees clockwise again from the left horizontal line.

Drill bit aligning method for a drill bit grinding machine according to the present invention to achieve the above object, in aligning the drill bit to polish the cutting tip of the drill bit, the angle (B) for photographing the drill bit on the basis of the horizontal line Using the distance from the end of the drill bit of the image taken by the camera of the angle to the first groove (P1) and the second groove (P2) to calculate the rotation angle (θ) of the drill bit by the following equation (1) And aligning the drill bit by rotating the drill bit by the rotation angle θ of the drill bit.

In addition, the calculation formula (1) further includes the following correction formula (A1) according to the expected grinding distance (A) of the drill bit, the rotation angle (θ) of the drill bit by the following formula (2) It is characterized by calculating.

In addition, in aligning the drill bit to polish the cutting tip of the drill bit, an angle (B) of photographing the drill bit with respect to the horizontal line and an arbitrary groove (at the end of the drill bit of the image taken by the camera of the angle) Using the distance between P2) and the next groove P3, the rotation angle θ of the drill bit is calculated by the following equation (3), and the drill bit is rotated by the rotation angle θ of the drill bit to align it. Characterized in that.

In addition, the calculation formula (3) further includes the following correction formula (A2) according to the expected grinding distance (A) of the drill bit, and the rotation angle (θ) of the drill bit by the following expression (4). It is characterized by calculating.

Drill bit sorting method for a drill bit grinding machine having the above characteristics is calculated through the groove angle and the shooting angle of the camera 2 and the upper or lower portion in the image of the drill bit 10 taken through the camera (2). In addition, it is possible to align the cutting tip 11 of the drill bit 10 by rotating the drill bit 10 by a predetermined rotation angle inferred through the operation.

As shown in FIG. 3, the case where the camera 2 is located at the lower 45 degrees of the drill bit 10 in the drill bit alignment method for the drill bit grinder according to the present invention will be described below.

I-1 of FIG. 3 is an image photographed by the camera 2, and the distance P1 from the end of the drill bit 10 to the first groove and the distance P2 from the end to the second groove by the program of the controller. Will be measured.

As a result of the measurement, when the distance P1 from the end of the drill bit 10 to the first groove is 5 μm and the distance P2 to the second groove is 10 μm, the drill bit 10 is polished to the camera 2 for polishing. The cutting tip 11 of the drill bit 10 should be aligned horizontally so that the image photographed by FIG. 3 becomes an image such as I-2 of FIG. 3.

As shown in I-3 of FIG. 3, the angle B of photographing the drill bit of the camera 2 is an angle of 1 to 180 degrees in the clockwise direction (c) from the right horizontal line with respect to the horizontal line when the drill bit is viewed from the front. Since the angle of 1 to 180 degrees again in the clockwise direction (c) from the left horizontal line, the angle B for photographing the drill bit is 45 degrees.

The rotation angle θ of the drill bit is calculated by the following Equation (1) through the drill bit 10 photographing measurement angle B based on the measured value and the horizontal line as described above.

--- 식(1)

--- Equation (1)

In addition, the bit chuck 1 rotates the drill bit 10 in accordance with the signal of the controller by the rotation angle θ of the drill bit calculated by Equation (1), thereby cutting the edge 11 of the drill bit 10. Will be aligned horizontally.

As a result of the measurement, the distance P1 from the end of the drill bit 10 to the first groove was 5 μm, the distance P2 to the second groove was 10 μm, and the angle B for photographing the drill bit was 45 degrees. The calculation according to 1) results in the rotation angle θ of the drill bit of 135 degrees.

Therefore, the drill bit 10 is rotated 135 degrees clockwise (c) to align the cutting tip 11 of the drill bit 10 horizontally.

In addition, when the rotation angle θ of the drill bit of 90 degrees or more is derived by calculation for faster alignment, the calculation by the following equation (1a) may be performed once more,

Additional operation When the following equation (1a) is calculated, the direction is reversed.

θ '= 180 °-rotation angle of the drill bit by the calculation (θ) --- equation (1a)

Since the rotation angle θ 135 degrees of the drill bit is a value of 90 degrees or more, 45 degrees is derived from the rotation angle θ 'of the drill bit by further performing an additional operation as shown in Equation (1a), and the direction is reversed. It is rotated 45 degrees clockwise (d) to align.

Thus, the preferred embodiment is rotated 45 degrees counterclockwise (d) by additional calculation, so that the cutting tip 11 of the drill bit 10 so that the image as shown in Fig. Will align horizontally.

As illustrated in FIG. 4, a case in which the camera 2 is located at the upper 45 degrees of the drill bit 10 in the drill bit alignment method for the drill bit grinding machine according to the present invention is as follows.

4 is an image photographed by the camera 2, wherein the cutting tip 11 of the drill bit 10 is in a position parallel to the camera 2, and the cutting tip of the drill bit 10 ( 11) viewed from the front, it is inclined 45 degrees clockwise (c).

Therefore, in order to grind the drill bit 10, the cutting tip 11 of the drill bit 10 should be aligned horizontally so that the image photographed by the camera 2 becomes an image similar to I-2 of FIG. 4.

Therefore, the distance P1 from the end of the drill bit 10 to the first groove and the distance P2 from the end to the second groove by the program of the controller through the image I-1 of the drill bit 10 photographed. Will be measured.

As shown in I-3 of FIG. 4, the angle B of photographing the drill bit of the camera 2 is an angle of 1 to 180 degrees in the clockwise direction (c) from the right horizontal line with respect to the horizontal line when the drill bit is viewed from the front. Since the angle of 1 to 180 degrees again in the clockwise direction (c) from the left horizontal line, the angle B for photographing the drill bit is 45 degrees.

The rotation angle θ of the drill bit is calculated by the following Equation (1) through the drill bit 10 photographing measurement angle B based on the measured value and the horizontal line as described above.

--- 식(1)

--- Equation (1)

In addition, the bit chuck 1 rotates the drill bit 10 in accordance with the signal of the controller by the rotation angle θ of the drill bit calculated by Equation (1), thereby cutting the edge 11 of the drill bit 10. Will be aligned horizontally.

As a preferred embodiment, the rotation angle θ of the drill bit of 135 degrees is derived by the calculation according to Equation (1) so that the image of FIG. 4-1 becomes the same image as I-2.

Therefore, the drill bit 10 is rotated 135 degrees clockwise (c) to align the cutting tip 11 of the drill bit 10 horizontally.

In addition, when the rotation angle θ of the drill bit of 90 degrees or more is derived by calculation for faster alignment, the calculation by Equation 1a below may be performed once more.

θ '= 180 °-rotation angle of the drill bit by the calculation (θ) --- equation (1a)

The rotation angle θ 'of the drill bit, which has undergone additional calculation as shown in Equation (1a), has a value of 90 degrees or less, and the direction is reversed, thereby rotating in the counterclockwise direction (d).

Thus, the above preferred embodiment is rotated 45 degrees counterclockwise (d) by additional calculation, so that the cutting tip 11 of the drill bit 10 so that an image such as I-2 of FIG. ) Will be aligned horizontally.

As shown in FIG. 5, the drill bit alignment method for the drill bit grinding machine according to the present invention may further include a correction angle α according to the expected polishing distance A of the drill bit 10.

Even though the drill bit 10 is horizontally corrected before the cutting tip 11 before polishing, the cutting tip 11 may not be horizontal after polishing. Therefore, the drill bit 10 may be horizontal after polishing the drill bit through correction according to the expected polishing distance A. It is necessary to correct it so that it becomes the cutting edge 11.

The expected polishing distance A is a distance that the polishing pad enters in the axial direction of the drill bit 10 to polish the drill bit 10, and may have a fixed value set in the program of the controller.

In addition, after remembering the end position of the drill bit 10 photographed after grinding the drill bit for the first time, the gap between the end of the drill bit 10 and the end of the photographed image to align the next drill bit 10 is adjusted. It is also possible to determine the expected polishing distance A by measuring.

In addition, depending on the inspection result of the drill bit after grinding, it may be modified from the next alignment to change to another value.

As shown in the enlarged view of I-2 of FIG. 5, when the polishing tip 10 is polished by the expected polishing distance A, the cutting tip 11 of the drill bit 10 has a correction angle α rotated along the spiral by a predetermined angle after polishing. Have.

Therefore, when the cutting tip 11 of the drill bit 10 is aligned horizontally and then polished, the cutting tip 11 is rotated in the helical direction by a predetermined correction angle α by the polishing amount.

As shown in I-3 of FIG. 5, the angle B for photographing the drill bit of the camera 2 is 1 to 180 degrees in the clockwise direction (c) from the right horizontal line with respect to the horizontal line when the drill bit is viewed from the front. Since the angle of 1 to 180 degrees again in the clockwise direction (c) from the left horizontal line, the angle (B) for photographing the drill bit is 90 degrees.

Therefore, in order to solve the problem as described above, the rotation angle θ of the drill bit further including a correction equation (A1) which causes the cutting tip 11 to be horizontal after polishing, is represented by the following equation (2).

--- 보정식(A1)

--- Calibration formula (A1)

--- (식2)

--- (Equation 2)

According to Equation (2), the rotation angle θ of the drill bit rotates more or less by a predetermined correction angle α by correction according to the expected polishing distance A, and the cutting edge 11 after polishing. Will be horizontal.

In addition, when the rotation angle (theta) of the drill bit came out clockwise (c) by Formula (1, 1a), it correct | amends by the predetermined | prescribed correction angle (alpha) by the correction formula (A1) by the anticipated distance A of grinding | polishing. Rotated except.

In addition, when the rotation angle (theta) of the drill bit came out counterclockwise (d) by Formula (1, 1a), the predetermined | prescribed correction angle (alpha) is corrected by the correction formula (A1) by the anticipated distance A of grinding | polishing. Will be rotated further.

In addition, in the case of the drill bit 10 of the right helix, the direction of further rotation by the additional correction equation (A1) is basically a counterclockwise direction (d), and in the case of the drill bit 10 of the left helix, the additional correction equation (A1). The direction of further rotation by) is basically clockwise (c).

As a preferred embodiment, when the drill bit 10 is photographed by the camera 2 in the image of Fig. 5-1, the calculation result by Equation (1) yields a rotation angle θ of the drill bit of 90 degrees. , The rotation angle (θ) of the drill bit is rotated 90 degrees clockwise (c), but equation (2), which further includes a correction equation, is a correction equation (A1) based on the expected polishing distance (A). It is further rotated by the correction angle α.

In addition, when the rotation angle θ of the drill bit of 90 degrees or more is derived by calculation for faster alignment, the calculation angle of the drill bit may be added counterclockwise ( d) by 90 degrees, and by less than the predetermined correction angle α by the correction formula A1 by the expected polishing distance A.

The predetermined polishing expected distance A used in the correction equation A1 may vary depending on the setting of the polishing machine, and there is no particular limitation.

In addition, the end of the spiral groove of the drill bit 10 may be difficult to find the position of the first groove in particular exposed to the environment susceptible to foreign matter, the first groove by another method of the drill bit alignment method for the drill bit grinding machine according to the present invention It is also possible to find the angle of the cutting tip 11 of the current drill bit 10 through the other groove.

As shown in I-1 of FIG. 5, the operation is performed through the distance P2 from the end of the drill bit 10 to the arbitrary groove and the distance P3 from the end to the next groove. The minimum value of the distance (P2) from the end to any groove is equal to the following equation (minimum value of P2) except for the distance (P2) from the end to any groove from the distance (P3) from the end to the groove following the groove. It has more than twice the value.

--- P2의 최소값

--- minimum value of P2

Accordingly, the groove used for the distance P2 from the end to any groove becomes the position of at least the second groove or the next groove, and it is possible to prevent an error or an error due to a foreign material of the first groove in advance.

The method of aligning the drill bit 10 using any of the grooves and the grooves following the grooves includes an angle B of photographing the drill bit 10 on the basis of a horizontal line, and an image photographed by the camera of the angle. At the end of the drill bit 10 of, the rotation angle θ of the drill bit using the distance between the arbitrary groove (P2) and the next groove (P3) is characterized by the following equation (3) .

--- 식(3)

--- Equation (3)

% Is not a percentage, but a sign that calculates the remainder after dividing.

For example, when P2 = 5 and P3 = 7, P2% (P3-P2) means 5% 2, the quotient is 2, and the remainder is 1, so P2% (P3-P2) = 1.

Therefore, the pitch of the drill bit 10 is calculated through P3-P2 of the formula (3), and the distance from the end of the drill bit 10 to the first groove through the remainder of P2 divided by (P3-P2). Operation.

In addition, it is possible to align the drill bit 10 through measurement and calculation without first groove of the drill bit 10 at various angles through the correction of the angle B at which the camera 2 captures the drill bit 10. Do.

In addition, as in Equation (2), Equation (3) of the drill bit alignment method for a drill bit grinding machine according to the present invention may further include a correction equation (A2) according to the expected polishing distance (A), the following equation Same as (4).

--- 보정식(A2)

--- Calibration formula (A2)

--- 식(4)

--- Equation (4)

Therefore, it is possible to correct according to the expected polishing distance A through equation (4) further comprising a correction equation (A2) in the calculation of the equation (3).

As a preferred embodiment, when the camera 2 is positioned as shown in I-3 of FIG. 5, and the photographed image is taken as the image of I-1 in FIG. 5, the rotation of the drill bit of 90 degrees as a result of the calculation by Equation (3) The angle (θ) is derived and the rotation angle (θ) of the drill bit is rotated 90 degrees clockwise (c), but equation (2) further including the correction equation (A2) is the expected polishing distance (A). It is further rotated by a predetermined angle by the correction formula (A2).

In addition, when the rotation angle θ of the drill bit of 90 degrees or more is derived by calculation for faster alignment, the calculation angle of the drill bit may be added in the counterclockwise direction since the calculation of equation (1a) may be added. d) by 90 degrees, and by less than a predetermined angle by the correction formula (A2) by the expected polishing distance (A).

In addition, it is possible to infer a predetermined angle of rotation through the calculation, and to align the drill bit 10 by rotating the drill bit 10 at the predetermined angle of rotation, but also by another method of the drill bit alignment method for drill bit grinder according to the present invention The drill bit 10 grooves of the finished image may be rotated and aligned until they reach a specific position.

Further, in aligning the drill bit to polish the cutting edge of the drill bit, the angle (B) for photographing the drill bit with respect to the horizontal line and the first groove (P1) at the drill bit end of the image taken by the camera of the angle ) And the distance between the second groove (P2) is calculated by the following equation (5), when the distance value from the end to the first groove (P1) becomes the calculated value (C) It is characterized by aligning the drill bit by rotating.

In addition, the calculation of equation (5) further includes the following correction equation (A3) according to the expected grinding distance (A) of the drill bit, and calculating the calculation value (C) by the following expression (6). It features.

Through the above characteristics, another method of the drill bit alignment method for the drill bit grinding machine according to the present invention is able to align the cutting tip 11 of the drill bit (10).

As illustrated in FIG. 6, another method of the drill bit alignment method for the drill bit grinding machine according to the present invention will be described with reference to the case where the camera 2 is located at a lower 45 degree angle of the drill bit 10. same.

I-1 of FIG. 6 is an image photographed by the camera 2, and the cutting tip 11 of the drill bit 10 is in a position parallel to the camera 2, and the cutting tip of the drill bit 10 ( 11) from the front, it is inclined 135 degrees clockwise (c).

Therefore, in order to grind the drill bit 10, the cutting tip 11 of the drill bit 10 should be aligned horizontally so that the image photographed by the camera 2 becomes an image as shown in FIG. 6.

Therefore, the distance P1 from the end of the drill bit 10 to the first groove and the distance P2 from the end to the second groove by the program of the controller through the image I-1 of the drill bit 10 photographed. Will be measured.

As shown in I-3 of FIG. 6, the angle B of photographing the drill bit of the camera 2 is 1 to 180 degrees in the clockwise direction (c) from the right horizontal line with respect to the horizontal line when the drill bit is viewed from the front. Since the angle of 1 to 180 degrees again from the left horizontal line in the clockwise direction (c), the angle B for photographing the drill bit is 135 degrees.

The calculation value C is calculated by the following equation (5) through the angle B of photographing the drill bit 10 based on the measured value and the horizontal line as described above.

--- 식(5)

--- Equation (5)

In addition, the bit chuck 1 rotates the drill bit 10 until the distance P1 to the first groove is equal to the operation value C calculated by Equation (5), and the distance to the first groove. When P1 is equal to the calculation value C, the cutting tip 11 of the drill bit 10 is aligned horizontally.

As a preferred embodiment, rotation is performed until the distance P1 to the first groove is equal to the calculation value C by the calculation according to Equation (5) so that the image of I-1 in FIG. 6 becomes the same image as I-2. When the distance P1 to the first groove is equal to the operation value C, the rotation is stopped.

Therefore, the operation value C of the drill bit 10 captured by the image of I-3 of FIG. 6 is rotated until the distance P1 to the first groove becomes 3/4.

In addition, in the case of the drill bit 10 of the right helix, when the drill bit 10 is rotated clockwise (c), the distance P1 to the first groove is increased, and when the drill bit 10 is rotated counterclockwise, the first groove is rotated. The distance to P1 is reduced, and in the case of the left helix.

In addition, the rotation direction may be determined according to which of the following expressions (5a, 5b) results from multiplying the following operation value (C) by 2 for faster alignment.

--- 식(5a)

--- Equation (5a)

--- 식(5b)

--- Equation (5b)

When the result as shown in the above formula (5a), the drill bit 10 is rotated counterclockwise (d), and when the result as shown in the above formula (5b), the drill bit 10 in the clockwise direction (c) By rotating it becomes possible to align the drill bit 10 more quickly.

Thus, the preferred embodiment rotates clockwise c by additional calculations so that the cutting tip 11 of the drill bit 10 is horizontal so that an image such as I-2 of FIG. 6 is captured by the camera 2. Will be sorted.

Further, in rotating the drill bit 10, when the distance P1 to the first groove is smaller or larger than the distance value except for the distance P1 to the first groove from the end P2 to the second groove, The distance P1 to the new first groove is created.

In addition, another method of the drill bit alignment method for the drill bit grinding machine according to the present invention may further include a correction amount according to the expected polishing distance (A) of the drill bit (10).

Therefore, the distance P1 to the first groove is further moved and aligned by the anticipated distance A, and the cutting edge 11 is horizontal after cutting.

Therefore, the rotation angle of the drill bit 10 further including a correction equation (A3) for leveling the cutting tip 11 after grinding as described above is as shown in Equation (6) below.

--- 보정식(A3)

--- Calibration formula (A3)

--- (식6)

--- (Eq. 6)

According to Equation (6), the calculated value C has a value added by the correction amount of the expected polishing distance A, and the cutting edge 11 is horizontal after polishing.

Therefore, the distance P1 to the first groove always has a value larger than the expected polishing distance A.

As a preferred embodiment, when the drill bit 10 is photographed by the camera 2 as shown in Fig. 1-1, the calculated value C according to Equation (5) is 3 of the distance P1 to the first groove. / 4 is derived, and the drill bit 10 is aligned while rotating in the counterclockwise direction (d) until the operation value C and the distance P1 to the first groove are equal, but the correction equation (A3) is further added. Equation (6) includes the calculated value (C) of Equation (6) because of the correction equation (A3) by the expected polishing distance (A). The distance P1 is rotated until the calculated value C is further included by the length of the expected polishing distance A.

In addition, when the drill bit 10 is rotated in the clockwise direction (c), the drill bit 10 is rotated until it moves less by the length of the expected polishing distance (A), because the direction of movement of the groove is different depending on the rotational direction.

The moving direction of the groove according to the rotation direction is moved (decreased) to the left when rotating in the clockwise direction (c), and moved to the right when increasing in the counterclockwise direction (d).

In addition, although the first groove of the photographed image may be rotated and aligned until reaching a specific position, a groove other than the first groove reaches a specific position by another method of the drill bit alignment method for the drill bit grinding machine according to the present invention. You can also rotate and align until

In addition, in aligning the drill bit to polish the cutting tip of the drill bit, an angle (B) of photographing the drill bit with respect to the horizontal line and an arbitrary groove (at the end of the drill bit of the image taken by the camera of the angle) Using the distance between P2 and the next groove P3, the calculation value C1 is calculated by the following formula (7a), and the calculated value C2 by the following formula (7b) is the previous calculation value (C1). It is characterized by aligning the drill bit by rotating until).

Furthermore, the calculation of equation (7a) further includes the following correction equation (A4) according to the expected grinding distance (A) of the drill bit, and calculating the calculation value (C1) by the following expression (8). It features.

Another method of the drill bit alignment method for a drill bit grinding machine according to the present invention through the above features is to be able to align the cutting tip 11 of the drill bit 10 horizontally.

As shown in FIG. 6, another method of the drill bit alignment method for the drill bit grinding machine according to the present invention will be described with reference to the case where the camera 2 is located at the lower 135 degree angle of the drill bit 10. same.

6I-1 is an image photographed by the camera 2, wherein the cutting tip 11 of the drill bit 10 is in a position parallel to the camera 2, and the cutting tip 11 of the drill bit 10. ) Is inclined 135 degrees clockwise (c).

Therefore, in order to grind the drill bit 10, the cutting tip 11 of the drill bit 10 should be aligned horizontally so that the image photographed by the camera 2 becomes an image as shown in FIG. 6.

Accordingly, the distance P2 from the end of the drill bit 10 to any groove and the end of the groove from the end to the next groove by the program of the controller through the image I-1 of the drill bit 10 photographed. The distance P3 is measured.

In addition, the operation is performed through the distance (P2) from the end of the drill bit 10 to any groove and the distance (P3) from the end of the groove to the next groove, and from the end to any groove. The minimum value of the distance P2 is equal to or greater than twice the value of the distance P3 from the end to the arbitrary groove to the end of any groove, as shown in the above formula (the minimum value of P2). Have

Accordingly, the groove used for the distance P2 from the end to any groove becomes the position of at least the second groove or the next groove, and it is possible to prevent an error or an error due to a foreign material of the first groove in advance.

The calculation values C1 and C2 are calculated by the following equations (7a and 7b) through the angle B for photographing the drill bit 10 based on the measured value and the horizontal line as described above.

--- 식(7a)

--- Equation (7a)

--- 식(7b)

--- Equation (7b)

Therefore, the bit value 1 is derived until the operation value C1 is derived through the equation 7a, and the operation value C2 calculated by the expression 7b is equal to the previous operation value C1. The drill bit 10 is rotated, and the cutting edge 11 of the drill bit 10 is horizontally aligned when the operation value C2 is equal to the previous operation value C1.

As a preferred embodiment, the calculation value C2 according to the above formula (7b) is rotated until the image of FIG. 6-1 becomes the same image as I-2 until the same as the previous calculation value C1, and by rotation The distance P2 from the end of the drill bit 10 to any groove and the distance P3 from the end to the groove next to any groove are constantly changing.

Therefore, the operation value C2 according to equation (7b) is also continuously calculated, and the rotation stops when the operation value C2 according to equation (7b) is equal to the previous operation value C1 by expression (7a). .

In addition, when the target previous operation value C1 is larger than the current operation value C2, the drill bit 10 is rotated counterclockwise (d) to increase the current operation value C2. Rotate to (c) to reduce.

In addition, in the case of the drill bit 10 of the right helix, the operation value C2 decreases when the drill bit 10 is rotated clockwise (c), and the operation value C2 is rotated when the drill bit 10 is rotated counterclockwise (d). This will increase, in the case of the left helix.

In addition, for faster alignment, the value obtained by multiplying the operation value C2 by 2, as shown in Equations 5a and 5b, may be compared with the previous operation value C1 to determine the rotation direction.

If the value obtained by multiplying the operation value C2 by 2 is smaller than the previous operation value C1, the drill bit 10 is rotated clockwise (c), and the operation value C2 multiplied by 2 is the previous operation value. When larger than (C1), the drill bit 10 can be rotated counterclockwise (d), so that the drill bit 10 can be aligned more quickly.

Thus, the preferred embodiment rotates clockwise c by additional calculations so that the cutting tip 11 of the drill bit 10 is horizontal so that an image such as I-2 of FIG. 6 is captured by the camera 2. Will be sorted.

In addition, the calculation value C2 according to the above formula (7b) is always greater than the value P2 from the end of the drill bit 10 to the groove following the arbitrary groove except for the distance P2 from the end to the groove. It will have a small value.

In addition, another method of the drill bit alignment method for the drill bit grinding machine according to the present invention may further include a correction amount according to the expected polishing distance (A) of the drill bit (10).

Therefore, the target calculation value C1 is reduced and aligned by the expected polishing distance A, and the cutting edge 11 has a horizontal cutting tip 11 after cutting.

Therefore, the rotation angle of the drill bit 10 further including a correction equation (A4) for leveling the cutting tip 11 after grinding as described above is as shown in Equation (8) below.

--- 보정식(A4)

--- Calibration formula (A4)

--- (식8)

--- (Eq. 8)

According to Equation (8), the calculated value C1 has a value excluding the expected polishing distance A, and the value of the calculated value C2 of the formula (7b) is the calculated value C1 of the formula (8). After cutting by rotating the drill bit 10 until the cutting edge 11 becomes), the cutting bit 11 aligns the drill bit 10 horizontally.

As a preferred embodiment, when the drill bit 10 is photographed by the camera 2 as shown in Fig. 6-1, the calculated value C1 according to equation (7a) is next to any groove at the end of the drill bit 10. 3/4 of the value excluding the distance P2 from the end to any groove is derived from the distance to the groove (P3), and the drill bit 10 moves the operation value (C2) in the counterclockwise direction (d). Equation (8), which is aligned while rotating until it is equal to the calculated value (C1), further includes a correction equation (A4), due to the correction equation (A4) by the expected polishing distance (A). Since the calculation value C1 is excluded by the polishing expected distance A, the target previous calculation value C1 has a smaller size and is rotated until it moves further by the length of the polishing expected distance A. FIG.

In addition, when the drill bit 10 is rotated in the clockwise direction (c), the drill bit 10 is rotated until it moves less by the length of the expected polishing distance (A), and the calculated value (C2) according to the rotation direction is the previous calculated value (C1). This is because the direction of movement is different.

The moving direction of the groove according to the rotation direction is moved (decreased) to the left when rotating in the clockwise direction (c), and moved to the right when increasing in the counterclockwise direction (d).

Thus, the drill bit 10 moves the calculated value C2 less or more by the length of the expected polishing distance A depending on the rotational direction, and the cutting tip 11 of the drill bit 10 is horizontal after polishing. Will sort.

As mentioned above, although this invention was described based on the preferred embodiment with reference to attached drawing, it is clear that those skilled in the art for many various modifications are possible for this, without leaving | separating the range of this invention. Therefore, the scope of the invention should be construed by the claims described to include examples of many such variations.

Claims (8)

In aligning the drill bit to polish the cutting tip of the drill bit, An angle B of photographing the drill bit based on the horizontal line; Using the distance between the first groove P1 and the second groove P2 at the end of the drill bit of the image taken by the camera of the angle, the rotation angle θ of the drill bit is calculated by the following equation (1); Characterized by rotating the drill bit by the rotation angle (θ) of the drill bit How to align drill bits for drill bit grinders.

--- Equation (1) P1: Distance from the end to the first groove P2: Distance from the end to the second groove B: Drill Bit Shooting Angle The method of claim 1, Further comprising the following correction equation (A1) according to the expected grinding distance (A) of the drill bit in the calculation of the formula (1), The rotation angle θ of the drill bit is calculated by the following equation (2) How to align drill bits for drill bit grinders.

--- Calibration formula (A1)

--- Equation (2) P1: Distance from the end to the first groove P2: Distance from the end to the second groove B: Drill Bit Shooting Angle A: Expected distance of grinding In aligning the drill bit to polish the cutting tip of the drill bit, An angle B of photographing the drill bit based on the horizontal line; The rotation angle θ of the drill bit is calculated by the following equation (3) by using a distance from the end of the drill bit of the image taken by the camera of the angle to an arbitrary groove P2 and the next groove P3. ; Characterized by rotating the drill bit by the rotation angle (θ) of the drill bit How to align drill bits for drill bit grinders.

--- Equation (3) P2: distance from the end to any groove P3: Distance from the end to the next groove at random B: Drill Bit Shooting Angle P2% (P3-P2): Remaining value after dividing P2 by (P3-P2) The method of claim 3, wherein Further comprising the following correction equation (A2) according to the expected grinding distance (A) of the drill bit in the calculation of the formula (3), The rotation angle θ of the drill bit is calculated by the following equation (4) How to align drill bits for drill bit grinders.

--- Equation (4)

--- Calibration formula (A2) P2: distance from the end to any groove P3: Distance from the end to the next groove at random B: Drill Bit Shooting Angle A: Expected distance of grinding P2% (P3-P2): Remaining value after dividing P2 by (P3-P2) In aligning the drill bit to polish the cutting tip of the drill bit, An angle B of photographing the drill bit based on the horizontal line; Using the distance between the first groove P1 and the second groove P2 at the end of the drill bit of the image taken by the camera of the angle, the calculation value C is calculated by the following equation (5); Characterized by rotating the drill bit until the distance value from the end to the first groove (P1) is a calculated value (C) How to align drill bits for drill bit grinders.

--- Equation (5) P1: Distance from the end to the first groove P2: Distance from the end to the second groove B: Drill Bit Shooting Angle The method of claim 5, Further comprising the following correction equation (A3) according to the expected grinding distance (A) of the drill bit in the calculation of the formula (5), The calculation value C is calculated by the following expression (6). How to align drill bits for drill bit grinders.

--- Equation (6)

--- Calibration formula (A3) P1: Distance from the end to the first groove P2: Distance from the end to the second groove B: Drill Bit Shooting Angle A: Expected distance of grinding In aligning the drill bit to polish the cutting tip of the drill bit, An angle B of photographing the drill bit based on the horizontal line; The calculation value C1 is calculated by the following equation (7a) using the distance from the end of the drill bit of the image taken by the camera at the angle to an arbitrary groove P2 and the next groove P3; The drill bit is rotated and aligned until the operation value C2 according to Equation 7b below becomes the previous operation value C1. How to align drill bits for drill bit grinders.

--- Equation (7a)

--- Equation (7b) P2: distance from the end to any groove P3: Distance from the end to the next groove at random B: Drill Bit Shooting Angle P2% (P3-P2): Remaining value after dividing P2 by (P3-P2) The method of claim 7, wherein Further comprising the following correction equation (A4) according to the expected grinding distance (A) of the drill bit in the calculation of the formula (7a), The calculation value C1 is calculated by the following expression (8). How to align drill bits for drill bit grinders.

--- Equation (8)

--- Calibration formula (A4) P2: distance from the end to any groove P3: Distance from the end to the next groove at random B: Drill Bit Shooting Angle A: Polishing expected distance

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