WO2012039072A1 - Centrifugal barrel polishing device - Google Patents

Abstract

Provided is a centrifugal barrel polishing device which enables safer and more efficient work of a worker. A centrifugal barrel device (1) is provided with, as a drive mechanism for rotationally driving a turret (14), a polishing machine motor (20) and a low-speed motor (21) provided with a brake. Dogs (40a-40d) which rotate together with the turret (14) and can be detected by a proximity switch (41) are provided at the outer peripheral end close to respective barrel tanks (11a-11d) of the turret (14). The dogs (40a-40d) are provided such that when a dog faces the proximity switch (41) and the proximity switch (41) is on, the barrel tanks (11a-11d) are located at positions which enable work from a sliding door (30). In a pitch feed operation of the turret (14), the turret (14) is rotated by the low-speed motor (21), and when any of the dogs (40a-40d) is detected by the proximity switch (41), a control unit (51) stops the low-speed motor (21) by the brake.

Description

Centrifugal barrel polishing equipment

The present invention relates to a centrifugal barrel polishing apparatus.

Conventionally, workpieces to be polished (work) and abrasive media such as polishing media and compounds are loaded into the barrel tank for deburring, rounding, gloss finish polishing, etc., and the barrel tank is rotated and revolved. In addition, a centrifugal barrel polishing apparatus that polishes a workpiece by flowing an abrasive is widely used. As such a centrifugal barrel polishing apparatus, Japanese Patent Application Laid-Open No. 2003-205449 discloses a centrifugal barrel polishing for polishing a workpiece by attaching a plurality of barrel tanks to a turret that rotates in a vertical direction around a revolution axis. An apparatus is disclosed.

In the centrifugal barrel polishing apparatus as described above, the attaching / detaching operation of the barrel tank is performed at the take-out portion formed in the front surface of the barrel polishing apparatus. Here, since the turret rotates by inertia after the polishing operation is completed, the turret may stop at a position where the barrel tank cannot be removed from the take-out portion. In such a case, the turret was manually rotated and the barrel tank was fixed at a predetermined position and then removed. However, the turret needed a force to rotate, and the burden on the operator was heavy, and the arm and the like were rotated. There was a risk of getting involved in the mechanism. In addition, after removing one barrel tank, if the turret is released to remove the next barrel tank, the barrel tank is removed and the turret's weight balance is lost, causing the turret to rotate. There was a risk that the operator's arm or the like would be caught in the rotating mechanism. As a countermeasure, it is possible to use a motor with a brake as the drive motor that rotates the turret at a high speed during barrel polishing, but in a configuration in which a brake is attached to the motor that rotates at a high speed, torque to rotate the turret whose weight balance has been lost is used. Since it cannot be generated, a process such as mounting the barrel tank again and adjusting the weight balance and rotating it is necessary, and there is a problem that the barrel tank cannot be exchanged efficiently.

Therefore, an object of the present invention is to realize a centrifugal barrel polishing apparatus that enables a worker to perform safer and more efficient work.

In order to achieve the above object, according to the first aspect of the present invention, in the first aspect of the invention, a pair of turrets that rotate about a revolution shaft and the turret are provided so as to be capable of rotating via the rotation shaft, and the object to be polished is polished A centrifugal barrel polishing apparatus comprising: a plurality of barrel tanks charged with a material; and rotating the barrel turret by a motor for a polishing machine to revolve the barrel tank to polish an object to be polished. On the front surface, an opening / closing door for performing the attaching / detaching operation of the barrel tank is formed, and a position detection means for outputting a position detection signal when the barrel tank is located at a position where the operation can be performed from the opening / closing door, And a low-speed motor with a brake configured to be able to switch the drive of the turret with the motor for the polishing machine, and after the polishing of the object to be polished, the drive of the turret is driven by the mode for the polishing machine. It is configured to be able to perform pitch feed for switching the barrel tank from the open / close door to a workable location and stopping based on a position detection signal output from the position detection means. The technical means is used.

According to a second aspect of the invention, in the centrifugal barrel polishing apparatus according to the first aspect, the position detecting means includes a position detecting member attached to an outer peripheral portion of the turret corresponding to each barrel tank, and the barrel. A technical means is used that includes a proximity switch that outputs a position detection signal to face each of the position detection members when the tank is positioned at a position where the work can be performed from the opening and closing door.

According to the first aspect of the invention, when the barrel tank is located at a position where the work can be performed from the open / close door, the position detection signal is provided by the position detecting means attached to the outer peripheral portion of the turret corresponding to each barrel tank. After the polishing of the object to be polished, the drive of the turret is switched from the motor for the polishing machine to the low speed motor, and the barrel tank is moved from the open / close door based on the position detection signal output from the position detection means. Pitch feeding can be performed to move and stop at a workable location. This eliminates the need for conventional manual positioning work and enables safe and efficient work.
If the low-speed motor generates a large torque, even if the weight balance of the turret is lost, a process such as rotating the barrel tank again after adjusting the weight balance like a conventional centrifugal barrel polishing device is performed. It is unnecessary and pitch feed is possible. Thereby, efficient work can be performed.
In addition, since the low-speed motor includes a brake, the turret is safe from being rotated even if the weight balance of the turret is lost.
Further, by using the position detecting means and a proximity switch as in the second aspect of the invention, a position signal can be output without a complicated mechanism.

In the invention of the third aspect, the centrifugal barrel polishing apparatus of the first aspect includes a turret fixing device that presses the outer peripheral portion of the turret to fix the turret.

According to the third aspect of the invention, since the turret fixing device that fixes the turret by pressing the outer peripheral portion of the turret is provided, unexpected rotation of the turret can be prevented more reliably and it is safe.

According to a fourth aspect of the invention, the centrifugal barrel polishing apparatus according to the first aspect or the third aspect further comprises an opening / closing door opening / closing device for restricting opening / closing of the opening / closing door, and the opening / closing when the turret is not fixed. The technical means of not permitting the opening / closing door to be opened by the door opening / closing device is used.

According to the fourth aspect of the invention, when the turret is not fixed, the opening / closing door is not permitted to be opened by the opening / closing door opening / closing device. Therefore, when the turret is rotating or is likely to rotate, the opening / closing door is opened. Since it is not possible to open the door, it is possible to perform a safe work in a state where the turret is fixed.

In the invention of the fifth aspect, in the centrifugal barrel polishing apparatus of the first aspect, two revolution pulleys disposed on both outer sides of a pair of turrets coaxially fixed to the revolution shaft, and the same diameter as the revolution pulley The barrel tank is formed by a rotation pulley formed on the rotation shaft and coaxially fixed to each of the rotation shafts and disposed outside the pair of turrets, and two rotation pulleys and two rotation belts stretched around the rotation pulley. The technical means is used to form two groups of a plurality of rotation pulleys, one revolution pulley, and one rotation belt adjacent to each other in the turret rotation direction.

In the invention of the sixth aspect, in the centrifugal barrel polishing apparatus of the first aspect or the fifth aspect, the revolution pulley fixed coaxially to the revolution shaft, the same diameter as that of the revolution pulley, and each rotation shaft. The barrel tank is rotated and revolved by a rotation pulley fixed on the same axis and a rotation pulley and a rotation belt stretched around the rotation pulley, and the rotation pulley is arranged outside one of the pair of turrets. A technical means is used in which the belt for rotation is stretched so that the inner peripheral surface is in contact with the rotating pulley and the outer peripheral surface is in contact with the revolving pulley.

In the conventional barrel polishing apparatus, the length of the rotation shaft is different, which may cause deflection of the rotation shaft or loosening of the belt, and there is a possibility that stable rotation may be hindered. However, in the fifth aspect or the sixth aspect, According to the invention, since the length of the rotation shaft can be made uniform, the barrel tank can be rotated stably.

This application is based on Japanese Patent Application No. 2010-211496 filed on Sep. 22, 2010 in Japan, the contents of which form part of the present application.
The present invention will also be more fully understood from the following detailed description. However, the detailed description and specific examples are preferred embodiments of the present invention and are described for illustrative purposes only. This is because various changes and modifications will be apparent to those skilled in the art from this detailed description.
The applicant does not intend to contribute any of the described embodiments to the public, and the disclosed modifications and alternatives that may not be included in the scope of the claims are equivalent. It is part of the invention under discussion.
In this specification or in the claims, the use of nouns and similar directives should be interpreted to include both the singular and the plural unless specifically stated otherwise or clearly denied by context. The use of any examples or exemplary terms provided herein (eg, “etc.”) is merely intended to facilitate the description of the invention and is not specifically recited in the claims. As long as it does not limit the scope of the present invention.

It is explanatory drawing which shows the structure of the centrifugal barrel polishing apparatus of this invention. 1A is a front view and FIG. 1B is a right side perspective view. It is a schematic diagram which shows the structure of the motor for polishers, and a low speed motor. It is explanatory drawing which shows the self-revolution mechanism of the barrel tank in the centrifugal barrel polishing apparatus of this invention. 3A is a front view, and FIG. 3B is a left side perspective view. It is explanatory drawing which shows the self-revolution mechanism of the barrel tank in the conventional centrifugal barrel polishing apparatus. 4A is a front view, and FIG. 4B is a left side perspective view. It is a schematic diagram which shows the structure of the dog and proximity switch which are used for the position detection of a barrel tank. It is explanatory drawing which shows the structure of a turret fixing device. 6A shows a state where the turret is fixed, and FIG. 6B shows a state where the turret is opened. It is explanatory drawing which shows the structure of a slide door opening / closing apparatus. It is explanatory drawing which shows the example of a setting to the grinding | polishing conditions by the touchscreen of a control apparatus. It is explanatory drawing (left side perspective view similar to FIG. 3 (A) and FIG. 4 (A)) which shows the example of a change of the self-revolution mechanism of the barrel tank in the centrifugal barrel polishing apparatus of this invention.

A centrifugal barrel polishing apparatus according to the present invention will be described. Here, FIG. 1 shows a state in which the slide door 30 of the centrifugal barrel polishing apparatus 1 is opened to show the internal structure.
In addition, this invention is not limited to the following embodiment.

As shown in FIG. 1, the centrifugal barrel polishing apparatus 1 includes a plurality of barrel tanks, in the present embodiment, four barrel tanks 11a, inside a housing 10 having a sliding door 30 on the front surface (the front side in the figure). To 11d are fixed to the barrel tank cases 12a to 12d, respectively, and arranged so as to be able to rotate and revolve in the vertical direction. The number of barrel tanks and barrel tank cases can be any number, not four.

The barrel tanks 11a to 11d are formed in a cylindrical shape into which an object to be polished (work) and polishing media or a compound can be charged.

The barrel tank cases 12 a to 12 d are arranged at equal intervals on a concentric circle between a pair of turrets (revolution disks) 14 having a horizontally fixed revolution shaft 13 as a center of rotation, and rotate parallel to the revolution shaft 13. The shafts 15a to 15d are supported so as to be able to rotate, and are configured to be rotatable relative to the turret 14.

The centrifugal barrel polishing apparatus 1 includes a polishing machine motor 20 and a low-speed motor 21 equipped with a brake as a drive mechanism for rotationally driving the turret 14.
Here, the low-speed motor 21 is a motor used when the barrel tanks 11a to 11d are attached and detached, and the peripheral speed of the turret 14 can be driven at a speed lower than a safe speed, for example, a low speed of 533 mm / s or less. A motor capable of generating a large torque capable of rotating the turret 14 even when the weight balance is lost due to the attachment / detachment of the tanks 11a to 11d is employed.

As shown in FIG. 2, the polishing machine motor 20 and the low-speed motor 21 are configured to be able to switch driving by a clutch 22. The sprocket 22a is connected to a low speed motor by a chain 22b. When the clutch 22 and the sprocket 22a are separated from each other, the sprocket 22a and the rotating shaft 23a of the motor are not connected, and the rotating shaft 23a is driven by the output from the motor 20 for the polishing machine. The rotary shaft 23a and the low-speed motor 21 are connected by pressing the clutch 22 against the sprocket 22a, and the drive of the rotary shaft 23a can be switched from the drive by the polishing machine motor 20 to the drive by the low-speed motor 21.

A motor pulley 23 is fixed to the rotation shaft 23a of the motor, and the turret 14 is configured to be rotatable about the revolution shaft 13 by spanning the revolution belt 24 between the motor pulley 23 and the outer peripheral portion of the turret 14. ing.

3A, small-diameter revolution pulleys 25a and 25b are fixed to the revolution shaft 13 in a direction away from both turrets 14 (outward of the turret 14). Further, on the rotation shafts 15a to 15d, rotation pulleys 26a to 26d having the same diameter as the revolution pulleys 25a and 25b are fixed to the rotation shafts 15a to 15d, respectively.

In this embodiment, the rotation pulleys 26a and 26b and the revolution pulley 25a adjacent to the rotation direction of the turret 14 are provided on the drive side (left side in the drawing) of the turret 14, and the rotation pulleys 26c and 26d and the revolution pulley 25b are opposed to each other. It is provided outside the turret 14 (right side in the figure). That is, the rotation pulley and the one revolution pulley of two adjacent barrel tanks form a group and are arranged outside the turrets 14 facing each other.
In FIG. 3, for the sake of simplicity, only the polishing machine motor 20 is shown as a drive mechanism for rotationally driving the turret 14.

As shown in FIG. 3B, the rotation belts 27a and 27b are looped between the revolution pulleys 25a and 25b and the rotation pulleys 26a to 26d so that the inner peripheral surfaces thereof are in contact with each other. 28 is brought into contact with the outer peripheral surface of the rotation belt 27a to reduce belt play. Similarly, a rotation belt 27b is looped around the right revolution pulley 25b and the rotation pulleys 26c and 26d.

When the rotation shafts 15a to 15d turn around the revolution shaft 13 by the rotation of the turret 14, the rotation of the revolution shaft 13 is transmitted to the rotation shafts 15a to 15d by the rotation belts 27a and 27b, and the rotation shafts 15a to 15d rotate. . Here, since the revolution pulleys 25a and 25b and the revolution pulleys 26a to 26d have the same diameter, the revolution shafts 15a to 15d are interlocked at the same rotational speed as the revolution shaft 13, that is, the turret 14, in the direction opposite to the revolution direction. It will rotate. Thus, the barrel tanks 11a to 11d can be rotated around the revolution shaft 13 while maintaining the posture of the barrel tanks 11a to 11d.

FIG. 4 shows the arrangement of rotation pulleys in a conventional barrel polishing apparatus. As shown in FIG. 4, in the conventional barrel polishing apparatus, the revolution pulleys 25a and 25b and the rotation pulleys 26a to 26d of this embodiment are arranged together on the drive side of the turret 14, and therefore the lengths of the rotation shafts are different. (For example, the rotation shaft 15c is longer than the rotation shaft 15a), which may cause deflection of the rotation shaft or loosening of the belt, which may hinder stable rotation.
As in the configuration of the present invention, two adjacent rotating pulleys and one revolving pulley are grouped and arranged to face each other, so that the lengths of the rotating shafts 15a to 15d can be made uniform. To 11d can be rotated stably.

As shown in FIG. 5, at the outer peripheral end of the turret 14 in the vicinity of the barrel tanks 11a to 11d, the position is detected with a proximity switch 41 that rotates with the turret 14 and is provided on the base of the centrifugal barrel polishing apparatus 1. Members (dogs in the present embodiment) 40a to 40d are provided. The dogs 40a to 40d are formed of, for example, plate-shaped metal pieces.

When the dogs 40a to 40d face the proximity switch 41 and the proximity switch 41 is turned on, a position detection signal is transmitted to the control unit 51 (see FIG. 1).
Each of the dogs 40a to 40d is provided so that the barrel tanks 11a to 11d are positioned at positions where the work can be performed from the slide door 30 when the proximity switch 41 is in the ON state so as to face the proximity switch 41. For example, as shown in FIG. 5, when the dog 40 b faces the proximity switch 41, the barrel tank 11 a is disposed in front of the slide door 30.
In this way, position detection can be performed every 1/4 rotation (1 pitch) by the dogs 40a to 40d and the proximity switch 41.

A rotation speed detection dog and a rotation speed detection proximity switch may be further provided, and a rotation speed signal may be transmitted to the control unit 51. Thereby, since the more accurate rotation speed of the turret 14 can be grasped, the polishing conditions can be grasped and controlled more accurately.
The rotation speed detection dog and proximity switch may be provided separately from the dogs 40a to 40d and the proximity switch 41 according to the response speed, or may be shared with the dogs 40a to 40d and the proximity switch 41. Good.

As shown in FIGS. 1 and 6, a turret fixing device 31 that presses and fixes the turret 14 is provided on the upper portion of the housing 10. The turret fixing device 31 includes a lever 31a formed outside the housing 10, a pressing portion 31b that presses the outer peripheral portion of the turret 14 by operating the lever 31a, a shaft 31c that transmits the movement of the lever 31a to the pressing portion 31b, A detection block 31d provided on the shaft 31c, a fixed detection unit 31e for detecting the fixed state of the turret 14, and an open detection unit 31f for detecting the open state of the turret 14 are provided.

As shown in FIG. 6A, when the lever 31a is tilted to the fixed side, the pressing portion 31b presses the outer peripheral portion of the turret 14 and can be fixed in a non-rotatable manner. At this time, the detection block 31d comes into contact with the fixed detection unit 31e, and the fixed detection unit 31e transmits a turret fixation signal indicating that the turret 14 is fixed to the control unit 51.

As shown in FIG. 6B, when the lever 31a is tilted to the open side, the pressing of the outer peripheral portion of the turret 14 by the pressing portion 31b is released, and the turret 14 can be opened rotatably. At this time, the detection block 31d contacts the opening detection unit 31f, and a turret opening signal indicating that the turret is opened is transmitted from the opening detection unit 31f to the control unit 51.

As shown in FIG. 7, a slide door opening / closing device 32 that restricts the opening / closing of the slide door 30 is provided adjacent to the slide door 30. The sliding door opening / closing device 32 includes a locking portion 32a that can be locked to the flange portion 30a formed at the end of the sliding door 30, and a latch lock 32b for releasing the locking of the flange portion 30a by the locking portion 32a. And a solenoid lock 32c capable of interlocking the latch lock 32b according to a command from the control unit 51.

The locking part 32a is urged in a direction (upward in the figure) to be locked to the collar part 30a, and is configured to be movable in the vertical direction. When the sliding door 30 is closed, the locking portion 32a is guided by the flange portion 30a and once retracted downward. When the flange portion 30a passes the locking portion 32a, the locking portion 32a protrudes upward and locks the flange portion 30a. Prevent the door 30 from opening. When the latch lock 32b is pulled downward when the opening condition of the slide door 30 described later is satisfied, the locking of the hook portion 30a by the locking portion 32a is released, and the slide door 30 can be opened.

Here, conventionally, the solenoid lock used in this type of interlock performs a closing operation when energized. However, in this configuration, the sliding door is also operated when the turret 14 is rotating inertially when power is interrupted due to a sudden power failure or the like. 30 can be opened and closed. Therefore, in this embodiment, the solenoid lock 32c is configured to be safer by performing an opening operation when energized.

As shown in FIG. 1, a control device 50 including a touch panel control panel and control buttons is provided on the front surface of the housing 10. The control device 50 is connected to the control unit 51, and can input and set a touch panel while confirming commands to the control unit 51 such as polishing conditions on a monitor. For example, as shown in FIGS. 8A and 8B, the polishing time, the number of rotations, and the like can be set in 10 steps, and up to 10 pattern settings can be stored as shown in FIG. 8C. Can be made.
In addition, the control button can be used to switch between driving of the polishing machine motor 20 and the low speed motor 21 and to perform pitch feed by the low speed motor 21 described later.

The control unit 51 performs drive control of the polishing machine motor 20 based on the polishing conditions set in the control device 50. Here, when the rotation speed is measured by the rotation speed detection dog and the proximity switch, feedback control of the polishing machine motor 20 can be performed based on the rotation speed signal output from the proximity switch.
The control unit 51 is electrically connected to the turret fixing device 31, the sliding door opening / closing device 32, and the proximity switch 41, and based on signals output from these, the position control and sliding of the turret 14 shown below are performed. Open / close control of the door 30 is performed.

Hereinafter, the polishing procedure by the centrifugal barrel polishing apparatus 1 will be described.

In the polishing process, barrel tanks 11a to 11d charged with workpieces, polishing media, compounds, and the like are fixed to barrel tank cases 12a to 12d, respectively, and the polishing machine motor 20 is driven to rotate based on a command from the control unit 51. By rotating the turret 14, the workpiece is polished under predetermined polishing conditions.

When the polishing process is completed, the supply of power to the polishing machine motor 20 is stopped, and the turret 14 rotates by inertia. Since this inertial rotation continues for about 20 seconds, the controller 51 causes the solenoid lock 32c to interlock the latch lock 32b until the rotational speed of the turret 14 reaches a safe rotational speed, for example, for 30 seconds after the polishing process is completed. Control so that it cannot be released.

Next, after confirming that the turret 14 has stopped or reached a predetermined rotational speed or less, the drive of the turret 14 is switched from the polishing machine motor 20 to the low-speed motor 21 by an operation button of the control device 50.
Whether or not the turret 14 is equal to or lower than a predetermined rotational speed depends on whether or not the output of the rotational speed signal of the proximity switch for rotational speed and the position detection signal of the proximity switch 41 for position detection is within a predetermined time. Judgment can be made.

Subsequently, the pitch feed of the turret 14 is operated by the operation button of the control device 50. When the turret 14 is rotated by the low speed motor 21 and any one of the dogs 40a to 40d is detected by the proximity switch 41, a position detection signal is output from the proximity switch 41 to the control unit 51, and the control unit 51 turns the low speed motor 21 on. Control to stop by brake. Thereby, a desired barrel tank, for example, the barrel tank 11a is arranged in front of the slide door 30. In this way, conventional manual positioning work is unnecessary, and safe and efficient work is possible.

Subsequently, the turret fixing device 31 is operated to fix the turret 14. Since the low-speed motor 21 has a brake, it does not rotate without fixing the turret 14, but by using the turret fixing device 31, unexpected rotation of the turret 14 can be more reliably prevented. It is safe.
When the turret 14 is fixed, a turret fixing signal is output from the turret fixing device 31 to the control unit 51. When the turret fixing signal is input, the control unit 51 releases the interlock of the sliding door opening / closing device 32. Since the control unit 51 does not allow the sliding door 30 to be opened by the sliding door opening and closing device 32 when the turret 14 is inertially rotated or not fixed (when the turret opening signal is input), the turret is not permitted. Since the slide door 30 cannot be opened when the 14 is rotating or is likely to rotate, a safe operation with the turret 14 fixed is possible.

Subsequently, the latch lock 32b is operated to release the locking of the flange 30a by the locking portion 32a, the slide door 30 is opened, the barrel tank 11a is taken out and replaced.

Subsequently, the turret 14 is released from being fixed by the turret fixing device 31, and the pitch feed of the turret 14 is operated by the operation button of the control device 50 so that another barrel tank, for example, the barrel tank 11b comes to the front. Perform pitch feed. When the barrel tank 11b comes to the front by pitch feed, the turret 14 can be fixed by the turret fixing device 31, and an exchange operation or the like can be performed. The same applies to other barrel tanks.
Since the low-speed motor 21 includes a brake, it does not rotate even if the turret 14 is fixed by the turret fixing device 31 and is safe. In addition, since the low speed motor 21 has a large torque, even if the barrel tank 11a is removed and the weight balance of the turret 14 is lost, the barrel tank 11a is mounted again like the conventional centrifugal barrel polishing apparatus to adjust the weight balance. A process such as rotating is unnecessary, and pitch feed is possible. Thereby, efficient work can be performed.
Here, in order to perform pitch feed of the barrel tanks 11a to 11d with the slide door 30 opened, it is preferable to provide a light curtain at the opening of the slide door 30 to prevent the operator from getting caught.

As described above, according to the centrifugal barrel polishing apparatus 1 of the present invention, an operator can perform safer and more efficient work.

The centrifugal barrel polishing apparatus of the present invention may be either a dry centrifugal barrel polishing apparatus or a wet centrifugal barrel polishing apparatus.

[Effect of the embodiment]
(1) According to the centrifugal barrel polishing apparatus 1 of the present invention, the barrel tanks 11a to 11d are provided by the dogs 40a to 40d and the proximity switches 41 respectively attached to the outer periphery of the turret 14 corresponding to the barrel tanks 11a to 11d. Since the position detection signal can be output to the control unit 51 when 11d is located at a position where the work can be performed from the slide door 30, the turret 41 is driven from the polishing machine motor 20 at a low speed after the polishing of the object to be polished. By switching to the motor 21, based on the position detection signal output from the proximity switch 41, pitch feed can be performed to move and stop the barrel tanks 11 a to 11 d from the slide door 30 to a workable location. This eliminates the need for conventional manual positioning work and enables safe and efficient work.
Since the low-speed motor 21 can generate a large torque, even if the weight balance of the turret 14 is lost, the barrel tank is mounted again like the conventional centrifugal barrel polishing apparatus, and the weight balance is adjusted and then rotated. No process is required and pitch feed is possible. Thereby, efficient work can be performed.
In addition, since the low-speed motor 21 is provided with a brake, there is no risk that the turret 14 will rotate even if the weight balance of the turret 14 is lost.

(2) By using the turret fixing device 31, unexpected rotation of the turret 14 can be prevented more reliably and it is safe.

(3) The control unit 51 does not allow the slide door opening / closing device 32 to open the slide door 30 when the turret 14 is inertially rotated or not fixed (when the turret open signal is input). Therefore, since the sliding door 30 cannot be opened when the turret 14 is rotating or is likely to rotate, a safe operation with the turret 14 fixed is possible.

(Other embodiments)
As shown in FIG. 9, the rotation pulleys 26a to 26d are arranged on one side, the inner peripheral surface of the rotation belt 27 is in contact with the rotation pulleys 26a to 26d, and the outer periphery surface of the rotation belt 27 is in contact with the revolution pulley 25. By spanning the rotation belt 27 as described above, it is possible to rotate all the rotation shafts 15 a to 15 d in conjunction with the rotation of the turret 14 with one rotation belt 27. Also by this, the lengths of the rotation shafts 15a to 15d can be made uniform, so that the barrel tanks 11a to 11d can be stably rotated.

In this embodiment, the dogs 40a to 40d and the proximity switch 41 are used as position detecting means, but the present invention is not limited to this. For example, it may be a non-contact position detecting means using a laser or the like, or may be a contact type position detecting means for detecting a position by bringing a probe required for position detection into contact with the outer periphery of the turret 14. When the contact-type position detecting means is employed, for example, a notch or a step acting as a position detecting member is formed on the outer periphery of the turret 14 corresponding to the positions of the barrel tanks 11a to 11d. It is possible to adopt a configuration in which the positions of the barrel tanks 11a to 11d are detected by detecting the cuts and the steps with the contactor. Here, since the contact surface of the stylus 14 with respect to the turret 14 is preferably a cylindrical surface with the rotation axis of the turret 14 as the center, a cylindrical surface is formed as necessary when the turret 14 is not disk-shaped. For this purpose, a member (such as a disk) can be installed.

Claims (6)

A pair of turrets that rotate about a revolving shaft, and a plurality of barrel tanks that are provided in the turret so as to be able to rotate via a rotation shaft and that are charged with an abrasive to be polished. In a centrifugal barrel polishing apparatus that polishes an object to be polished by revolving the barrel tank by rotating it by a machine motor,
On the front surface of the apparatus main body, an opening / closing door for performing attachment / detachment work of the barrel tank is formed,
Position detection means for outputting a position detection signal when the barrel tank is located at a position where the work can be performed from the opening and closing door;
A low-speed motor with a brake configured to be able to switch the driving of the turret with the motor for the polishing machine,
After the polishing of the object to be polished, the driving of the turret is switched from the motor for the polishing machine to the low speed motor, and the barrel tank is moved from the open / close door based on a position detection signal output from the position detection means. A centrifugal barrel polishing apparatus characterized in that it is configured to be capable of pitch feed for moving and stopping to a workable location. The position detection means includes a position detection member attached to the outer peripheral portion of the turret corresponding to each barrel tank,
The proximity switch which outputs a position detection signal opposite to each said member for position detection when the said barrel tank is located in the location which can operate | work from the said opening-and-closing door, It is characterized by the above-mentioned. Centrifugal barrel polishing equipment. The centrifugal barrel polishing apparatus according to claim 1, further comprising a turret fixing device that presses an outer peripheral portion of the turret to fix the turret. An open / close door opening / closing device for restricting the opening / closing of the open / close door;
4. The centrifugal barrel polishing apparatus according to claim 1, wherein when the turret is not fixed, the opening / closing door is not permitted to be opened by the opening / closing door opening / closing device. 5. Two revolving pulleys that are coaxially fixed to the revolving shafts and arranged on both outer sides of the pair of turrets, and are formed to have the same diameter as the revolving pulleys and are coaxially fixed to the respective revolving shafts and outside the pair of turrets. The barrel tank is rotated and revolved by the arranged rotation pulley, each of the two revolution pulleys, and two rotation belts stretched around the rotation pulley,
2. The centrifugal barrel polishing apparatus according to claim 1, wherein two groups of a plurality of rotation pulleys, one revolution pulley, and one rotation belt adjacent to each other in the rotation direction of the turret are formed. A revolving pulley fixed coaxially to the revolving shaft, a revolving pulley formed in the same diameter as the revolving pulley and coaxially fixed to each revolving shaft, and a revolving belt spanned between the revolving pulley and the revolving pulley, The barrel tank is revolved,
The rotation pulley is arranged on one outer side of the pair of turrets, and the one rotation belt is stretched so that the inner peripheral surface is in contact with the rotation pulley and the outer peripheral surface is in contact with the revolution pulley. The centrifugal barrel polishing apparatus according to claim 1 or 5.

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