JP2005095927A - Micro joint cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a micro joint cutting device which can perform precise positioning of a cutting tool to a micro joint to be cut regardless of directionality of the micro joint. <P>SOLUTION: A vertical shift frame 7 is movably attached to a shift positioning frame 3 that can control shift positioning in both X-axis and Y-axis directions. A Y-shift frame 21 movable in Y-axis direction is attached to the X-shift frame 15 held by the vertical shift frame 7 movably in X-axis direction. A cutting device 45, which has a cutting tool to cut a micro joint 99 connecting a product with a workpiece, is rotatably attached to the Y-shift frame 21. Relief mechanisms 31, 43 to allow a minute relative shift of the shifting members from the neutral point are prepared both between a shifting member 29 to shift the X-shift frame 15 and the X-shift frame 15 itself and between the shifting member 41 to shift the Y-shift frame 21 and the Y-shift frame 21 itself. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a micro-joint cutting device that cuts a micro-joint connecting a workpiece and a product when cutting products having various outer shapes from a plate-like workpiece, and more particularly, to cut a micro-joint. The present invention relates to a microjoint cutting apparatus that can accurately position a cutting tool with respect to a position and can cut regardless of the directionality of the microjoint.

  For example, when a product with various outer shapes is cut from a plate-shaped workpiece by a turret punch press, a groove is formed by overtaking or nibbling along the outer shape of the product. Processing to leave a micro joint in the corner of the product is performed. In other words, the product is connected to the workpiece through a plurality of micro joints.

  Therefore, in order to reliably cut and separate the product from the workpiece, it is necessary to cut the micro joint. In this case, for example, when the microjoint is cut by providing a microjoint cutting die in a part of the turret punch, the original punching process of the turret punch press is stopped when the microjoint is cut. As a result, the operating rate will decrease.

Then, the workpiece | work after processing with a turret punch press is conveyed to the cutting processing machine only for micro joint cutting, and the micro joint is cut | disconnected in this cutting processing machine (for example, refer patent document 1).
JP 2001-205363 A

  The cutting machine dedicated to micro joint cutting described in Patent Document 1 is provided with a guide provided above a table for supporting a workpiece so as to be movable in the X-axis direction, and is movable along the guide in the Y-axis direction. The micro joint cutting head is provided with tool driving means for raising and lowering the cutting tool.

  Therefore, in order to position the cutting tool at the position of the micro joint to be cut, it is necessary to move and position the guide in the X axis direction and move and position the micro joint cutting head in the Y axis direction. At this time, for example, it is desirable to cut the connecting portion between the wire joint and the product rather than cutting the intermediate portion in the longitudinal direction of the wire joint (wire-shaped micro joint), and high-precision positioning is required. Thus, the above configuration is desired to be improved in order to improve efficiency.

  Moreover, in the structure of patent document 1, since the directionality of a cutting tool is constant, the directionality of a wire joint must be made constant, and there exists a problem on a process.

  The present invention has been made in view of the conventional problems as described above, and an elevating frame is provided on a movable positioning frame provided so as to be movable and positionable in the X-axis direction and the Y-axis direction. A cutting device provided with a cutting tool for cutting a micro joint that connects a workpiece and a product, with a Y moving frame movably provided in an Y moving direction on an X moving frame supported movably in the X axis direction. The Y moving frame is configured to be rotatable.

  Further, the present invention provides the above-described micro joint cutting device, wherein the moving member for moving the X moving frame and the X moving frame and the moving member for moving the Y moving frame and the Y moving frame In between, it is the structure provided with the relief mechanism which accept | permits the relative slight movement of the moving member from a neutral position.

  Further, according to the present invention, an elevating frame is provided so as to be movable up and down on a moving positioning frame provided so as to be movable and positionable in the X-axis direction and the Y-axis direction. A cutting device provided with a cutting tool for cutting a microjoint connecting the workpiece and the product is rotatably provided on the support frame, and a moving member for moving the support frame in the X-axis direction; An escape mechanism is provided between the support frame and between the support frame and the moving member for moving the support frame in the Y-axis direction, and allows the movement member to move slightly from the neutral position. It is the composition which is.

  In the micro joint cutting apparatus according to the present invention, the escape mechanism includes a fluid pressure cylinder disposed so as to face each other with the moving member interposed therebetween.

  Further, the present invention provides the above-described microjoint cutting apparatus, wherein the cutting tool for cutting the microjoint includes a lower blade capable of entering the microjoint from a groove between the workpiece and the product, and the lower blade And a vertically movable upper blade that cuts the micro joint in cooperation with the actuator, and the lift frame includes an actuator for lowering the upper blade.

  In addition, the present invention is a configuration in which the micro joint cutting device includes a rising prevention means for restricting the actuator from rising relative to a frame that supports the cutting device.

  Further, the present invention is the above-described micro joint cutting apparatus, wherein the lower blade connects a linear blade portion for cutting a micro joint connecting the linear edge of the product and the workpiece, and a corner portion of the product and the workpiece. The upper blade has a first upper blade corresponding to the linear blade portion and a second upper blade corresponding to the inclined blade portion. It is a configuration that can be individually moved up and down.

  In the micro joint cutting device according to the present invention, the lower blade includes a contact plane that can contact a side edge of a product on opposite side surfaces, and an end side of each contact plane. It is the structure provided with the said linear blade part and the said inclination blade part.

  According to the present invention, the moving positioning frame is moved in the X and Y directions, the cutting device is positioned close to the micro joint to be cut, the tool is lowered into the groove between the workpiece and the product, and then the cutting is performed. The frame provided with the device can be moved minutely in the X and Y directions, and the tool can be accurately positioned with respect to the micro joint to be cut. Further, since the cutting device is provided so as to be rotatable, the cutting device can be cut according to the direction of the micro joint regardless of the direction of the micro joint.

  Referring to FIGS. 1 and 2, a micro joint cutting apparatus 1 according to an embodiment of the present invention is a work in a state where a product and a work are connected via a micro joint (also referred to as a wire joint) in a turret punch press, for example. A movable positioning frame 3 is provided that can be moved and positioned in the X-axis direction and the Y-axis direction above a horizontally supported work table (not shown).

  Since the configuration for moving and positioning the moving positioning frame 3 in the X-axis direction and the Y-axis direction is a generally known configuration, the moving positioning frame 3 is moved and positioned in the X-axis direction and the Y-axis direction. Detailed description of the configuration for this purpose will be omitted.

  The movable positioning frame 3 is provided with a vertical guide member 5, and a vertical guide 9 provided on the lifting frame 7 is engaged with the guide member 5 so as to be movable up and down. The elevating frame 7 is moved up and down by an elevating actuator 11 such as an air cylinder provided in the movable positioning frame 3. The elevating frame 7 has an X axis direction (perpendicular to the paper surface in FIG. 1). Direction guide member 13 is provided horizontally, and a guide 17 provided on the X moving frame 15 is movably engaged with the guide member 13.

  As shown in FIG. 2, the X moving frame 15 has a substantially L shape in plan view, and a guide member 19 in the Y axis direction is horizontally provided on the X moving frame 15. The guide member 19 in the Y-axis direction is provided at substantially the same height as the guide member 13 in the X-axis direction. A guide 23 provided on the Y moving frame 21 is movably engaged with the guide member 19.

  The movement of the X moving frame 15 in the X axis direction is performed by the operation of an X axis actuator 25 (see FIG. 3) such as an air cylinder mounted on the elevating frame 7. More specifically, a plate-like moving member 29 for moving the X moving frame 15 in the X-axis direction is integrated with the tip of an operating rod 27 such as a piston rod provided in the actuator 25 so as to be able to reciprocate. Installed. An escape mechanism 31 that allows slight movement of the moving member 29 in the X-axis direction from the neutral position is provided between the moving member 29 and the X moving frame 15.

  That is, the X moving frame 15 is provided with a floating cylinder 33 such as a small air cylinder facing the moving member 29 therebetween. The piston rod 35 in the floating cylinder 33 is in contact with the opposite surface of the moving member 29 at the stroke end in the protruding direction. Therefore, it is easy to relatively position the moving member 29 at the neutral position between the opposed floating cylinders 33.

  In the aspect in which the fluid pressure is supplied into both the floating cylinders 33 by projecting the piston rods 35 from each other and the moving member 29 is sandwiched from both sides, the X moving frame 15 is integrated with the moving member 29. It is something that moves. The X moving frame 15 is slightly movable relative to the moving member 29 in the X-axis direction by maintaining the fluid pressure in the floating cylinders 33 in the drain state. That is, the escape operation in the X-axis direction is possible.

  The Y moving frame 21 is moved in the Y axis direction by the operation of the Y axis actuator 37 mounted on the X moving frame 15. That is, the Y-axis actuator 37 has the same configuration as that of the actuator 25, and the actuator 37, which is provided in the actuator 37 so as to be capable of reciprocating in the Y-axis direction, has the same structure as that of the moving member 29. A moving member 41 is integrally attached.

  And the front-end | tip part of each piston rod 35 with which the floating cylinder 33 attached to the Y movement frame 21 was contact | abutted on the both sides of the Y-axis direction of this moving member 41. As shown in FIG. That is, an escape mechanism 43 having the same configuration as the escape mechanism 31 is provided between the moving member 41 and the Y moving frame 21. Accordingly, in the movement positioning operation in the Y-axis direction, the same operation as the movement positioning operation in the X-axis direction is performed.

  In order to cut the micro joint connecting the workpiece and the product, the Y moving frame 21 is rotatably supported by a cutting device 45 having a cutting tool for cutting the micro joint. A rotation positioning device 47 such as a servo motor for performing rotational positioning (tool indexing positioning) of the cutting device 45 is mounted.

  More specifically, a tool support body 51 is supported on the Y moving frame 21 via a bearing 49 (see FIGS. 1 and 4) so as to be horizontally rotatable. A timing belt 57 is wound around a pulley 53 provided and a pulley 55 provided in a servo motor as an example of the rotation positioning device 47. Therefore, the tool support main body 51 can be rotated by the operation of the rotation positioning device 47 to perform indexing positioning at a desired rotation position.

  A lower blade 59 that can enter the lower side of the micro joint as a cutting tool for cutting the micro joint is integrally provided at the lower portion of the tool support body 51 so as to protrude downward. First and second upper blades 61 and 63 (see FIG. 6) for cutting the micro joint in cooperation with the blade 59 are provided to be movable up and down.

  As shown in detail in FIG. 6, the cross-sectional shape of the lower blade 59 is a substantially rectangular shape having a contact flat surface 59 </ b> A that is in contact with a straight side edge of the product in parallel with opposite side surfaces. In addition, a linear blade portion 59B for cutting a connection portion between the linear edge of the product and the micro joint is provided on one end side of the one contact plane 59A.

  A projecting portion 59C having an appropriate shape such as a triangular shape is provided on the opposite side surface of the straight blade portion 59B, and a micro joint in which a corner portion of the product and a workpiece are connected to the projecting portion 59C. An inclined blade portion 59D for cutting is formed. The inclined blade portion 59D is formed to be inclined by approximately 45 ° with respect to the other contact plane 59A. Therefore, when the micro joint is cut at the inclined blade portion 59D, a minute chamfering process is performed on the corner portion of the product.

  The first upper blade 61 includes a straight blade portion 61A that cuts the micro joint in cooperation with the direct blade portion 59B of the lower blade 59 at a symmetrical position, and one straight blade portion 61A. Is worn, the other straight blade portion 61A can be used. Similarly, the second upper blade 63 has an inclined blade portion 63A that cuts the micro joint in cooperation with the inclined blade portion 59D at a symmetrical position.

  The first and second upper blades 61 and 63 are provided at lower ends of first and second lifting rods 65A and 65B (see FIGS. 4 and 5) supported by the tool support body 51 so as to be movable up and down. It is provided. The first and second lifting rods 65A and 65B are provided between the punch heads 67A and 67B provided at the upper ends of the first and second lifting rods 65A and 65B and the tool support body 51. Elastic members 69 such as lifter springs for returning to the original raised position are respectively mounted.

  Part of each of the punch heads 67A and 67B is close to each other, and an elevator rod 71 pushed down by the punch heads 67A and 67B is movable up and down on the tool support body 51. It is supported. A lower part of the lifting rod 71 is provided with a work presser 73 for pressing the upper surface of the work when the microjoint is cut by the lower blade 59 and the upper blades 61 and 63.

  A first elastic member 77 such as a lifter spring for returning the lifting rod 71 to its original lifted position is provided between the flange portion 75 provided on the upper side of the lifting rod 71 and the tool support body 51. And a strong second elastic member 79 such as a disc spring is mounted between the flange portion 75 and the punch heads 67A and 67B.

  With the above configuration, when one punch head 67A (or 67B) is appropriately lowered to cut the micro joint, the second elastic member 79 is reduced by the punch head 67A (67B), and the first elastic member The lifting rod 71 is lowered against the urging force of 77. When the work presser 73 comes into contact with the upper surface of the work and stops descending, the punch head 67A (67B) further descends against the urging force of the second elastic member 79, and the punch head 67A (67B). The upper blade 61 (63) provided at the lower end portion of the lifting rod 65A (65B) provided with the upper end portion pushes down the micro joint and cooperates with the lower blade 59 to cut the micro joint. .

  In order to press down the punch heads 67A and 67B, a lowering actuator 81 (see FIG. 1) such as a fluid pressure cylinder is provided above the punch heads 67A and 67B. The lowering actuator 81 is attached to an overhang 83 provided by bending the elevating frame 7, and a pressing operation rod 85 such as a piston rod provided on the lowering actuator 81 to be movable up and down is provided. The punch heads 67A and 67B are individually indexed and positioned at the lower position.

  The punch heads 67A and 67B are indexed and positioned below the pressing operating rod 85 by rotating the tool support body 51 by the rotational positioning device 47 and moving the X by the X-axis actuator 25. This is performed by appropriately moving the frame 15 in the X-axis direction and appropriately moving the Y moving frame 21 in the Y-axis direction by the Y-axis actuator 37.

  When the lowering actuator 81 is operated and the punching heads 67A and 67B are pressed and lowered by the pressing operation rod 85, the lowering actuator 81 may be relatively raised by the reaction force. A rise prevention means 87 for preventing the relative rise of 81 is provided.

  More specifically, as shown in FIG. 1, the lowering actuator 81 or the overhanging portion 83 is provided with a horizontal bracket 89, and the Y moving frame 21 has a tip portion positioned above the bracket 89. A support bracket 91 located in the position is integrally provided upright. An upper surface pressing member 95 having a contact member 93 such as a ball that is relatively movable in contact with the upper surface of the bracket 89 is provided at the tip of the support bracket 91.

  Therefore, the upper surface of the bracket 89 is pressed by the upper surface pressing member 95 and the upward movement is restricted, and a reaction when the punch heads 67A and 67B are pressed downward by the pressing operation rod 85. The force is received by the protruding portion 83 and the upper surface pressing member 95. The downward force acting on the tool support body 51 when the punch heads 67A and 67B are lowered is received by the Y moving frame 21, the X moving frame 15, the elevating frame 7, and the support bracket 91. is there.

  That is, the acting force and the reaction force at the time when the punching actuators 67A and 67B are pushed down by operating the lowering actuator 81 or the cutting force to cut the micro joint are received in a closed annular system. Is. Therefore, it is not necessary to increase the rigidity of the overall configuration more than necessary, and the overall configuration can be reduced in size and weight.

  In the configuration as described above, as shown in FIG. 7, when the groove 97 is machined along the outer shape of the product G by, for example, a turret punch press (not shown), a micro joint ( 99 (which may also be referred to as a wire joint), and a micro joint in which the corner portion of the product G is connected to the workpiece W may be left. Therefore, in order to separate the product G from the workpiece W, it is necessary to cut the micro joint.

  In FIG. 7, the positioning of the lower blade 59 in the state A for cutting the micro joint (wire joint) 99 located in the middle of the groove 97 is performed as follows.

  In other words, the punch head 67A integrated with the first upper blade 61 is indexed and positioned so as to be positioned below the pressing operation rod 85, and is also relative to the workpiece W on the work table (not shown). The movable positioning frame 3 is moved and positioned in the X-axis direction and the Y-axis direction, and the cutting device 45 is positioned with respect to the groove 97 corresponding to the micro joint 99.

  Next, the elevating actuator 11 is operated to lower the elevating frame 7, and the lower blade 59 provided so as to protrude below the tool support body 51 in the cutting device 45 is inserted into the groove 97. Then, the actuator 37 is actuated to slightly move the Y moving frame 21 in the Y-axis direction, so that the linear lower portion 59B of the lower blade 59 enters and positions below the micro joint 99.

  The positioning of the lower blade 59 with respect to the micro joint 99 keeps the fluid pressure in each floating cylinder 33 in the relief mechanisms 31 and 43 at a low pressure and allows the fluid to flow out through the throttle or the like. Then, the Y-axis actuator 37 is actuated to bring the lower blade 59 into weak contact with the micro joint 99 from the Y-axis direction, and the X-axis actuator 25 is actuated to move the X moving frame 15 and Y. The frame 21 is slightly moved in the X-axis direction so that the contact plane 59A of the lower blade 59 is weakly brought into contact with the linear edge GA of the product G.

  As described above, when the lower blade 59 stops when the lower blade 59 is weakly brought into contact with the micro joint 99 and the linear side surface (synonymous with a straight edge) of the product G, the moving members 41 and 25 are moved by the actuators 37 and 25. 29, the piston rod 35 in one floating cylinder 33 is pushed, so that the lower blade 59 can be accurately positioned with respect to the micro joint to be cut.

  Thereafter, the lowering actuator 81 is operated, and the punch head 67A is pressed by the pressing operating rod 85, whereby the micro joint 99 is cut by the cooperation of the lower blade 59 and the upper blade 61. At this time, since the micro joint 99 is cut at the portion of the straight edge GA of the product G, there is no occurrence of a minute protrusion or the like.

  A state B shown in FIG. 7 shows a state in which the tool support main body 51 is rotated 90 ° counterclockwise from the position of the state A by the rotational positioning device 47. Similarly, the states C and D are 180 respectively. It shows the state rotated by 270 °. In the state E shown in FIG. 7, as shown in the state A, the punch head 67 </ b> B integrated with the upper blade 63 is held in the pressing operation rod 85 in a state where the longitudinal direction of the lower blade 59 is held in the Y direction. The positioning state in the case where the micro joint at the corner of the product G is cut is shown.

  In the state E, the lower blade 59 is positioned by making the lower blade 59 weakly abut against the end of the groove 97 and the product G, and in this state E, the inclined blade portion of the lower blade 59 is positioned. 59D is in a state in which positioning is accurately performed with respect to the micro joint at the corner of the product G. Then, when the micro joint is cut in the state E, the corner of the product G is chamfered. Note that states F, G, and H indicate states at positions where the tool support main body 51 is rotated 90 °, 180 °, and 270 ° counterclockwise from the position of the state F.

  As will be understood from the above description, according to the micro joint cutting device according to the present embodiment, the cutting tool (lower blade, upper blade) can be accurately positioned with respect to the micro joint to be cut, It can be cut regardless of the direction of the micro joint. Moreover, the connection part of a product and a micro joint can be cut | disconnected accurately, without producing a microprotrusion.

  By the way, in the above description, as an example of the configuration in which the cutting device 45 is slightly moved in the X-axis and Y-axis directions and positioned, the case where the X moving frame 15 and the Y moving frame 21 are configured separately is exemplified. The X moving frame 15 and the Y moving frame 21 may be integrated.

  That is, as conceptually and schematically shown in FIG. 8, the moving frame 103 is provided with a mounting portion 103A for mounting the cutting device 45 on the upper surface of the moving positioning frame 101 which can be moved and positioned in the X-axis and Y-axis directions. Is supported so as to be movable in the X-axis and Y-axis directions. A plurality of floating cylinders 33 in the X-axis direction in which the piston rods 35 are slidably contacted on both surfaces in the X-axis direction of the moving frame 103 are provided, and a U-shaped cylinder support that supports the floating cylinders 33 is provided. The frame 105 is configured to move in the X-axis direction by the X-axis actuator 107.

  Also, a configuration is adopted in which a cylinder support frame 109 that supports a plurality of floating cylinders 33 in the Y-axis direction provided opposite to both sides in the Y-axis direction of the moving frame 103 is moved in the Y-axis direction by a Y-axis actuator 111. It is what.

  According to the above configuration, the moving frame 103 can move slightly in the X-axis direction and the Y-axis direction with respect to the X-axis cylinder support frame 105 and the Y-axis cylinder support frame 109, as described above. The same effects as in the embodiment can be obtained.

It is front explanatory drawing of the micro joint cutting device which concerns on embodiment of this invention. It is plane explanatory drawing which abbreviate | omitted some micro joint cutting devices which concern on embodiment of this invention. It is plane explanatory drawing which shows the relief structure of a X-axis direction and a Y-axis direction. It is front explanatory drawing of a cutting device. It is plane explanatory drawing which shows the principal part of a cutting device. It is explanatory drawing which shows the shape and positional relationship of the lower blade and upper blade in a cutting device. It is explanatory drawing which shows the directivity of the lower blade and the upper blade when cut | disconnecting the micro joint around a product. It is explanatory drawing which shows another form of the flame | frame which supports a cutting device, and an escape mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Micro joint cutting device 3 Moving positioning frame 7 Elevating frame 15 X moving frame 21 Y moving frame 25 X axis actuator 29, 41 Moving member 31, 43 Relief mechanism 33 Floating cylinder 37 Actuator 39 Actuating rod 45 Cutting device 51 Tool support Member 59 Lower blade 59A Contact plane 59B Straight blade portion 59C Protruding portion 59D Inclined blade portion 61 First upper blade 61A Straight blade portion 63 Second upper blade 63A Inclined blade portion 67A, B Punch head 71 Lifting rod 73 Work clamp 77 First elastic member 79 Second elastic member 81 Lowering actuator 87 Lift prevention means 91 Support bracket 93 Contact member 95 Upper surface pressing member 97 Groove 99 Micro joint 101 Moving positioning frame 103 Moving frame 105, 109 Cylinder support frame

Claims (8)

  An elevating frame is provided on a moving positioning frame provided so as to be movable and positionable in the X-axis direction and the Y-axis direction. Is configured such that a cutting device provided with a cutting tool for cutting a micro joint connecting a workpiece and a product is rotatably provided in the Y moving frame. Micro joint cutting device.   The micro joint cutting device according to claim 1, wherein the moving member for moving the X moving frame and the X moving frame, and the moving member for moving the Y moving frame and the Y moving frame are disposed. And a relief mechanism that allows a relative slight movement of the moving member from the neutral position.   An elevating frame is provided so as to be movable up and down on a moving positioning frame provided so as to be movable and positionable in the X-axis direction and the Y-axis direction. A cutting device having a cutting tool for cutting a microjoint connecting a workpiece and a product is rotatably provided, and between the moving member for moving the support frame in the X-axis direction and the support frame; An escape mechanism is provided between the moving member for moving the support frame in the Y-axis direction and the support frame to allow a relative slight movement of the moving member from the neutral position. Micro joint cutting device.   4. The micro joint cutting apparatus according to claim 2, wherein the relief mechanism includes a fluid pressure cylinder disposed opposite to each other with the moving member interposed therebetween.   5. The microjoint cutting device according to claim 1, 2, 3, or 4, wherein the cutting tool for cutting the microjoint is a lower blade capable of entering the lower side of the microjoint through a groove between the workpiece and the product. And a vertically movable upper blade that cuts the micro joint in cooperation with the lower blade, and a structure that includes an actuator for lowering the upper blade on the lifting frame. A micro joint cutting device characterized by that.   6. The micro joint cutting apparatus according to claim 5, further comprising a rising prevention means for restricting the actuator from rising relative to a frame supporting the cutting apparatus. apparatus.   The micro joint cutting device according to claim 5 or 6, wherein the lower blade connects a straight blade portion for cutting a micro joint connecting a straight edge of a product and a workpiece, and a corner portion of the product and the workpiece. An inclined blade portion for cutting the micro joint, and the upper blade includes a first upper blade corresponding to the linear blade portion and a second upper blade corresponding to the inclined blade portion. A micro-joint cutting device characterized in that it is configured to be individually movable up and down.   8. The micro joint cutting device according to claim 7, wherein the lower blade is configured to have contact planes that can freely contact a side edge of a product on opposite side surfaces, and on an end side of each contact plane. A micro joint cutting apparatus comprising the straight blade portion and the inclined blade portion.

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