JP2005118920A - Cutting tool holder and cutting device - Google Patents

Abstract

There is provided a cutting tool holder that does not require replacement of a cutting tool, and that can fix a plurality of cutting tools and finely adjust mounting positions with high positional accuracy.
[Solution]
A cutting tool holding means A provided with an XY movable stage 4 for attaching and holding a plurality of cutting tools 1 used for cutting one by one, and a cutting tool holding means A for attaching and holding a cutting tool 1 one by one, respectively. Comb holder means B that can be clamped and fixed independently. By the XY movable stage 4, the attachment position with respect to the comb holder means B and the cutting depth direction of the cutting tool 1 with respect to the workpiece. Fine adjustment of the mounting position in the direction of the cut surface is possible.
[Selection] Figure 2

Description

  The present invention relates to a cutting tool holder used for mechanical cutting and a cutting apparatus using the cutting tool holder, and particularly suitable for cutting that requires high-efficiency cutting such as cutting of a resin mold. The present invention relates to a cutting tool holder and a cutting apparatus using the cutting tool holder.

  Conventionally, for example, in cutting with a shape cutting machine (such as a lathe), a single cutting tool is fixed to a holder alone, and the tip of the cutting tool is brought into contact with a workpiece that moves in a rotational direction or a vertical and horizontal direction. However, it is widely used to form and cut the workpiece surface.

  FIG. 4 shows an example of a conventional tool holder of a general-purpose shape cutting machine. That is, in the conventional tool holder, for example, a general-purpose cutting tool 24 is pressed against the outer surface of the holder base 25, and a backing plate metal fitting 23 is attached on the outer surface of the cutting tool 24, and is fixed from the upper side of the backing plate fitting 23. The cutting tool 24 is attached and fixed to the holder base 25 by tightening with the metal fitting 22 and the fixing screw 21, and the holder base 25 to which the cutting tool 24 is fastened is fixed to the holder base. 27 is configured to be fixed to a movable holder 26 main body (28 is a sliding fixed lock handle) that can slide in the vertical and horizontal directions with respect to 27.

  The tool holder is attached to the cutting cylinder or the cutting board main body in a fixed position of the rotating cylinder or the reciprocating mechanism of the cutting cylinder or the cutting board main body movable in the rotation direction or the vertical and horizontal directions. The workpiece to be cut is processed.

  However, the above tool holder has the following problems. In other words, in the case of finish cutting after rough cutting or complex cutting of multiple shapes such as complex shapes, the dedicated cutting tool must be re-fixed with a good position system for each processing, and the setup time in cutting (Preparation and adjustment time) and cutting time will increase, and when cutting with a cutting depth (rough cutting) that is impossible with one cutting, multiple cutting depths are increased. It is necessary to perform cutting several times. In such a case, the cutting time and the setup time are increased.

  For this reason, it is difficult to shorten the setup time other than the cutting process, and it is difficult to improve the reproducibility of the processed shape of the product by changing the cutting tool for each process.

  Accordingly, an object of the present invention is to provide a cutting tool holder and a cutting apparatus that can fix a plurality of cutting tools with high positional accuracy and can finely adjust the mounting position without the need to replace the cutting tools. is there.

The invention according to claim 1 of the present invention includes a cutting tool holding means A having an XY movable stage 4 for attaching and holding a plurality of cutting tools 1 used for cutting one by one, and one cutting tool 1. The cutting tool holding means A attached and held one by one is composed of comb-shaped holder means B that can be individually clamped and fixed. The XY movable stage 4 allows the cutting tool 1 to be attached to the comb-shaped holder means B and each cutting tool 1 It is a cutting tool holder characterized by enabling fine adjustment of the attachment position in the cutting depth direction and the cutting surface direction with respect to the workpiece.

  The invention according to claim 1 of the present invention comprises a holding metal fitting 2 and an XY movable stage 4 capable of fixing the metal fitting 2 with a screw 3, and a cutting tool 1 between the holding metal fitting 2 and the XY movable stage 4. Cutting tool holding means A, N pieces of comb teeth 11, N−1 comb tooth spaces 12, holder base 14, and one end And a fastening bolt 15 screwed into a screw hole portion screwed at the tip end portion of the comb tooth portion 11 and inserted into the tip end portion of the other comb tooth portion 11, and a plurality of XY of each of the cutting tool holding means A Comb-like holder means B in which the stage base 6 surface of the movable stage 4 is screwed to one inner surface of each of the comb teeth portions 11, and each of the holding tool 2 of the cutting tool holding means A and the XY movable stage 4 is provided. Insert a cutting tool 1 between them, -Move the XY movable stage 4 to the outer side of the comb tooth space 12 of the means B to expose the holding metal fitting 2 and fix the metal fitting 2 with a screw 3 between the metal fitting 2 and the XY movable stage 4. After tightening and holding the cutting tool 1 and adjusting the movement of the XY movable stage 4 of each cutting tool holding means A, and finely adjusting the fixed position of each cutting tool 1 with respect to the processing depth direction and the processing surface direction, The cutting tool holder is characterized in that the cutting tool holding means A can be fastened and fixed by bringing the comb-teeth portions 11 at both ends close to each other with a tightening bolt 15.

  The invention according to claim 2 of the present invention is characterized in that a cutting object rotating mechanism that rotates by attaching and supporting the object to be cut to the frame that attaches and supports the cutting bite holder according to claim 1 is provided. It is a processing device.

  The invention according to claim 3 of the present invention is provided with a workpiece moving mechanism for attaching and supporting the workpiece to be moved in the X-Y direction on the frame on which the cutting tool holder according to claim 1 is attached and supported. It is the cutting device characterized by these.

  According to the cutting tool holder of the present invention, in the case of finishing cutting after rough cutting or complex cutting of multiple shapes such as complex shapes, a dedicated plurality of cutting tools are positioned for each processing. The cutting bit position adjusting mechanism of the cutting bit fixing mechanism capable of attaching a plurality of bites according to the present invention can be fixed with high positional accuracy without re-fixing well. There is no need for replacement, and it is possible to shorten the processing time of the fine linear groove shape and to improve the reproducibility of the processed shape.

  In addition, according to the cutting device of the present invention, since the cutting tool holder to which a plurality of cutting tools can be attached is provided, the cutting tool position adjusting mechanism of the cutting tool fixing mechanism to which the plurality of cutting tools are attached allows the plurality of cutting tools to be adjusted. Can be fixed with high positional accuracy, and it is not necessary to replace the cutting tool during the cutting process. This makes it possible to reduce the machining time for the fine linear groove shape and improve the reproducibility of the machined shape. became.

  The cutting tool holder of the present invention will be described in detail below with reference to an overall plan view of the cutting tool holder shown in FIG. 1 and an overall perspective view of the cutting tool holder shown in FIG. The object rotation mechanism or X, which is formed of a metal material obtained by appropriately selecting the material, is composed of a plurality of cutting tool holding means A and a comb-like holder means B, and rotates by attaching and supporting the object to be cut. Used by attaching to a cutting tool holder (bracket) supported by a main body frame of a cutting apparatus provided with a moving body moving mechanism for moving in the -Y direction.

  The cutting tool holding means A includes a holding metal fitting 2 having a holding shape (a U-shaped shape or the like) for holding the cutting tool 1 and an X-Y two that can screw the metal fitting 2 with a screw 3. It is composed of an XY movable stage 4 movable in a dimensional direction, and a cutting tool 1 is sandwiched one by one between the holding metal fitting 2 and the XY movable stage 4, and a cut recess 2b and a screw that match the shape of the tool. The metal fitting 2 provided with the hole 2a can be tightened and held by being screwed to the XY movable stage 4 provided with the screw hole 4a by the screw 3.

  The holding tool 2 of the holding means A may have any shape as long as the cutting tool 1 can be fixed to the XY movable stage 4 with sufficient strength and rigidity, but each cutting tool 1 has a comb-shaped holder means B (blade holder). Are fastened and fixed so as to be sandwiched by the fastening bolts 15 between the comb teeth space portions 12 (cut portions) between the respective comb teeth 11, and the portion in contact with the inner surface of the comb teeth 11 is preferably flat. In addition, the material is required to provide the cutting tool 1 with sufficient rigidity and strength for shape cutting. Therefore, various metal materials can be appropriately selected.

  The comb-shaped holder means B includes N (for example, four) comb teeth portions 11, N-1 (for example, three) comb tooth spaces 12, and a comb base portion 14 for the comb teeth portion 11. A fastening bolt 15 that is screwed into a screw hole portion 11a that is screwed at the tip end portion of the comb tooth portion 11 at one end and is inserted into a hole forming portion 11b that penetrates the tip end portion of each other comb tooth portion 11 is provided. .

  Further, in each comb tooth space portion 12 of the comb-shaped holder means B, the stage base 6 surface of the XY movable stage 4 of the cutting tool holding means A is screwed to one inner surface of each comb tooth portion 11. Mounting is fixed.

  The holding tool 2 of each cutting tool holding means A loaded in each comb tooth space 12 of the comb-shaped holder means B is movable in the XY direction of each cutting tool holding means A with the cutting tool 1 being sandwiched. A tightening and fixing method when the cutting tool 1 is fastened and fixed by screwing to the stage 4 will be described below. When the cutting tool 1 is sandwiched between the holding tool 2 of the cutting tool holding means A and the XY movable stage 4, the space between the rear surface of the tool 2 and the inner surface of the comb tooth portion 11 that is in contact therewith. Is set so that a slight clearance is generated.

  First, in the state where the cutting tool 1 is sandwiched between the holding tool 2 of the cutting tool holding means A and the XY movable stage 4 attached to the comb-shaped holder means B, the XY movable stage 4 is set to Y. Is moved to one side in the direction (front and back direction in FIG. 1), and the screw holes 2a at the two sides on one end side of the holding metal fitting 2 are exposed to the outside of the comb tooth space 12 of the comb-shaped holder means B, and the screw holes 2a By inserting the screw 3 and screwing it into the screw hole 4a of the XY movable stage 4, the cutting tool 1 can be clamped and held between the metal fitting 2 and the XY movable stage 4. .

  Next, the XY movable stage 4 is moved to the other side in the Y direction (front and back direction in FIG. 1), and the two screw holes 2a on both sides on the other end side of the holding metal fitting 2 are connected to the comb-shaped holder means B. The metal fitting 2 and the XY movable stage 4 are exposed to the outside of the comb tooth space 12, the screw 3 is inserted into the screw hole 2 a, and is screwed into the screw hole 4 a of the XY movable stage 4. By this, the cutting tool 1 can be clamped and held therebetween.

  The cutting tool holder of the present invention composed of a plurality of cutting tool holding means A and a comb-shaped holder means B each moves the XY movable stage 4 of the cutting tool holding means A in the Y direction (FIG. 1). ) And / or X direction (vertical direction in FIG. 1), the fixing position of the cutting tool 1 can be finely adjusted with respect to the processing depth direction and the processing surface direction of the workpiece.

  After finely adjusting the fixing position of the cutting tool 1 in this way, the comb teeth at both ends are tightened by tightening the fastening bolts 15 screwed into the screw holes 11a of the comb teeth 11 at one end of the comb holder means B. 11 and 11 are brought close to each other, and the XY movable stage 4 of the cutting tool holding means A is fastened and fixed. As shown in FIG. 1 and FIG. 2, a thin portion 16 (cut) is provided in a portion adjacent to the comb base 14 on the outer side of the comb tooth portion 11 at one end or both ends as needed, and combs at both ends are provided. You may make it easy to produce the approach by the bending property of the tooth parts 11 and 11 and the bolt 15 tightening.

  The cutting bite holder of the present invention is a workpiece rotating mechanism that rotates by attaching and supporting the workpiece to be mounted on the comb base 14 of the comb-shaped holder means B or the holder mounting portion 17 extending to the comb base 14. A main body frame (corresponding to the shaper main body 27 shown in FIG. 4) of a cutting apparatus provided with a workpiece moving mechanism that moves in the X-Y direction, a cutting tool holder portion (bracket, FIG. 4) supported by the main body frame. Can be attached to and used by a clamping (clamping) method or a screwing method, and the machining depth direction and the machining surface direction of the workpiece attached to the machining apparatus. On the other hand, the fixing position of each cutting tool 1 of the cutting tool holder is finely adjusted and used.

  The XY movable stage 4 (fine movement XY stage) of the cutting tool holding means A is attached to a movable body 5 (intermediate movable body) movable along an X-direction linear guide attached to the stage base 6. An XY movement mechanism movable along a Y-direction linear guide orthogonal to the X direction, and finely adjusting a fixed position in the X direction provided on a side portion of the movable body movable in the X direction. Finely adjust the X-direction fine adjustment head 7 composed of an X-direction micrometer for positioning and the Y-direction fixed position provided on the side of the main body of the XY movable stage 4 movable in the Y-direction for positioning. An X-Y direction fine adjustment mechanism including a Y-direction fine adjustment head 8 including a Y-direction micrometer is provided.

  3 (a), 3 (b), and 3 (c), the cutting tool 1 (1a; cutting tool edge) is held in the comb tooth space 12 of the comb-shaped holder means B so as to face the holding metal fitting 2 and loaded. FIG. 4 is a plan view, a front view, and a side view, respectively, for explaining details of an XY direction fine adjustment mechanism of the XY movable stage 4 in the cutting tool holding means A.

  As shown in FIG. 3A, the XY movable stage 4 of the cutting tool holding means A loaded with holding the cutting tool 1 facing the holding metal fitting 2 is linear with respect to the intermediate movable body 5. The intermediate movable body 5 is slidable while being urged by a return spring mechanism along the guide in the Y direction (front and back in the drawing), and the intermediate movable body 5 is moved along the linear guide with respect to the stage base 6 in the X direction (drawing). It is slidable in a state of being biased by a return spring mechanism in the vertical direction.

  As shown in FIG. 3B, the X-direction fine adjustment head 7 composed of an X-direction micrometer is rotatably supported by its extending shaft 6a on the extending piece 6a of the stage base 6, and the rotating shaft 7a. The distal end portion 7b presses the extended piece 5a of the intermediate movable body 5 against the urging force of the return spring mechanism, and the intermediate movable body 5 is moved by the normal rotation and reverse rotation of the X direction fine adjustment head 7. It can be moved forward and backward in the X direction.

  Further, as shown in FIG. 3 (c), the Y-direction fine adjustment head 8 composed of the Y-direction micrometer has its rotary shaft 8a rotatably supported by the extended piece portion 5b of the intermediate movable body 5, The tip 8b of the rotary shaft 8a presses the extended piece 4a of the XY movable stage 4 against the urging force of the return spring mechanism, and the Y-direction fine adjustment head 8 rotates forward and backward. The XY movable stage 4 on the intermediate movable body 5 movable in the X direction can be moved forward and backward in the Y direction.

  In the present invention, an adjustment head locking mechanism for stopping and locking the rotation of the X direction fine adjustment head 7 and the Y direction fine adjustment head 8 may be provided.

  The cutting tool holder of the present invention has a comb tooth space portion 12 (a number of comb tooth spaces 12 (a number of cutting tool tips 1 having various shapes of cutting tip blades corresponding to the desired number of processing steps) fixed to the comb-shaped holder means B. A cutting tool holding means A is loaded in each of them, and the comb-shaped holder means B is all attached to the comb-shaped holder means B by the holding metal 2, the XY movable stage 4 and the fastening bolt 15 of the cutting tool holding means A. The cutting tool 1 is fastened and fixed.

  After all the plural types of cutting tools 1 are fastened and fixed to the comb-shaped holder means B, the X-direction fine adjustment head comprising an X-direction micrometer in the left-right direction (for example, the X direction) with respect to the processing direction of the workpiece. By rotating 7 (fine adjustment mechanism) forward or reverse, it is positioned so as to be in a straight line with respect to the machining direction.

  Further, by rotating the Y-direction fine adjustment head 8 (fine movement mechanism) composed of a Y-direction micrometer in the cutting direction of the cutting tool 1 so as to have a cutting amount according to the processing of each cutting tool 1, it is rotated forward or reverse. After being positioned with high positional accuracy, the XY movable stage 4, each cutting tool 1, and the holding metal fitting 2 are sandwiched between the comb teeth portions 11 of the comb-shaped holder means B by tightening the tightening fixing bolt 15. Fixed.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

<Example 1>
Using the comb-shaped holder means B of the cutting tool holder of the present invention, the three types of cutting tools 1 of rough finishing, stop raising and finishing tools corresponding to the number of machining steps are fastened and fixed, and then reciprocating with high accuracy. The holder attaching portion 17 of the cutting tool holder of the present invention is attached and fixed to the cutting tool holder attaching and fixing mechanism of the cutting machine having the workpiece attaching stage to be cut.

  Subsequently, the position of each cutting bit 1 is adjusted and positioned using the X direction fine adjustment head 7 and the Y direction fine adjustment head 8 of the cutting bit holder so as to obtain an appropriate amount of cutting. A good machined surface with rough finishing, stopping and finishing cutting was obtained with a smaller number of machining than the conventional machining. As a result, an equivalent machined surface was obtained with an extremely small number of machining operations compared to the conventional method.

  As described above, according to the cutting tool holder of the present invention, the rough finishing tool, the stop tool, and the finishing tool are fixed to the cutting tool holder and the cutting machine with high positional accuracy. It has been found that the machining can be performed with a machining time of about one-sixth of the conventional machining time.

The whole top view explaining one Example of the cutting tool holder of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view explaining one Example of the cutting tool holder of this invention. (A) is a top view explaining the detail of the XY movable stage in the cutting tool holder of this invention, (b) is the side view, (c) is the front view. The side view explaining the conventional cutting tool holder.

Explanation of symbols

A ... Cutting tool holding means B ... Comb-shaped holder means 1 ... Cutting tool 2 ... Hold metal fitting 2a ... Perforated portion 3 ... Screw
4 ... XY movable stage 4a ... Screw hole 5 ... Intermediate movable body 6 ... Stage base
7 ... X direction micrometer head 8 ... Y direction micrometer head 11 ... comb tooth portion 11a ... screw hole 11b ... hole forming portion 12 ... comb tooth space portion 14 ... comb tooth base portion 15 ... clamping bolt 16 ... thin wall portion 17 ... holder Mounting part

Claims (4)

  A cutting tool holding means A provided with an XY movable stage 4 for attaching and holding a plurality of cutting tools 1 used for cutting one by one, and a cutting tool holding means A for attaching and holding a cutting tool 1 one by one, respectively. Comb holder means B that can be clamped and fixed independently, and by the XY movable stage 4, the attachment position with respect to the comb holder means B and the cutting depth direction of the cutting tool 1 with respect to the workpiece. Cutting tool holder characterized by enabling fine adjustment of the mounting position in the direction of the cutting surface.   A holding tool 2 and an XY movable stage 4 capable of fixing the metal fitting 2 to the screw 3 are formed. A cutting tool 1 is sandwiched between the holding metal fitting 2 and the XY movable stage 4 one by one, and the metal fitting 2 is attached to the screw 3. The cutting bite holding means A that can be fastened and held, N comb teeth 11, N−1 comb tooth spaces 12, comb teeth base 14, and one end of the comb teeth 11 tip are screwed. A fastening bolt 15 screwed into the screw hole portion and inserted into the tip portion of the other comb tooth portion 11, and the surface of the stage base 6 of the plurality of XY movable stages 4 of the cutting tool holding means A is Comb holder means B screwed to one inner surface of each comb tooth portion 11, and the cutting tool 1 is sandwiched between the holding fitting 2 of the cutting tool holding means A and the XY movable stage 4. X on the outside of the comb tooth space 12 of the holder means B The Y movable stage 4 is moved to expose the holding metal fitting 2, the metal fitting 2 is fixed with a screw 3, and the cutting bit 1 is clamped and held between the metal fitting 2 and the XY movable stage 4. After moving and adjusting the XY movable stage 4 of A and finely adjusting the fixing position of each cutting tool 1 with respect to the machining depth direction and the machining surface direction, the fastening teeth 15 approach the comb teeth 11 at both ends. A cutting tool holder characterized in that each cutting tool holding means A can be fastened and fixed.   A cutting apparatus comprising: a frame on which the cutting tool holder according to claim 1 is attached and supported; and a workpiece rotating mechanism that rotates by attaching and supporting the object to be cut.   A cutting apparatus, comprising: a frame on which the cutting tool holder according to claim 1 is attached and supported; and a workpiece moving mechanism for attaching and supporting the object to be cut and moving it in the XY direction.

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