JP6035174B2 - Deburring device - Google Patents

Description

  The present invention relates to a burr removing device for removing a burr generated at a lower portion of a processing edge when processing such as punching processing and cutting processing is performed by a plate material processing machine such as a punch press. The present invention also relates to a burr removing device that can constantly hold a pressing force when a burr is pressed from below by a striking element and the burr is crushed.

  As is well known, for example, when a plate-like workpiece is punched or cut by a plate material processing machine such as a punch press, burrs are generated at the lower portion of the processing edge of the workpiece. Therefore, the plate material processing machine is provided with a burr removing device to remove the generated burr (see, for example, Patent Document 1).

JP 2012-96241 A

  The configuration of the burr removing device described in Patent Document 1 is as shown in FIG. That is, the burr removing device 1 is provided in a punch press as an example of a plate material processing machine. As is well known, the punch press includes an upper mold holder (punch holder) 3 such as an upper turret and a lower mold holder (die holder) 5 such as a lower turret. The upper die holder 3 presses the upper surface in the vicinity of the processed edge WE that has been punched or cut on a plate-like workpiece W supported horizontally on the work table (not shown) so as to be movable in the X and Y axis directions. A work presser means 7 is provided.

  The work pressing means 7 includes a lifting member 9 supported by the upper mold holder 3 so as to be movable up and down. The elevating member 9 is always urged upward by a lifter spring 11, and a head member 15 is provided at the upper end of the elevating member 9 to be pressed by a striker (ram) 13 that can be moved up and down by a punch press. A rotating body holder 19 having a rotating member 17 such as a steel ball or a roller that can rotate by pressing the upper surface of the workpiece W is provided at the lower part of the elevating member 9 so as to be movable up and down. A pressing unit 21 is provided. The rotating body holder 19 is always pressed and urged downward by an elastic member 23 such as a coil spring provided in the pressing unit 21.

  A base 25 is provided at a position corresponding to the work pressing means 7 on the upper surface of the lower mold holder 5, and a fixture (not shown) such as a plurality of mounting bolts is provided on the base 25. A base member 27 is detachably attached. In the tool mounting hole 29 formed in the base member 27, a burr removing unit 31 for removing a burr generated at a lower portion of the processing edge WE in the workpiece W is detachably provided.

  More specifically, in the tool mounting hole 29 of the base member 27, a support base 33 that supports the plate-like workpiece W so as to be horizontally movable from below is provided with an appropriate fixing tool such as a mounting bolt ( (Not shown) is detachably attached. A striker 35 is provided in the recess 33C formed at the center of the lower surface of the support base 33 so as to be movable up and down, and a coil spring or the like mounted between the support base 33 and the striker 35 is used. The impact member 35 is always urged downward by the elastic member 37.

  The striker 35 passes through a vertical through hole 33H communicating with the concave portion 33C of the support base 33 so as to be movable up and down. Then, on the upper surface of the striker 35, a burr hitting portion having an appropriate shape such as a conical shape or a convex curved shape for hitting (striking pressure) a burr generated at the lower portion of the processing edge of the workpiece W from below. 39 is provided.

  In order to move the striker 35 up and down, the base member 27 is provided with a rotation actuator 41 such as an air motor. A rotating cam 45 is rotatably supported on the lower side of the striker 35 via a bearing 43. The shaft 45S of the rotating cam 45 and the rotating shaft 41S of the rotating actuator 41 are appropriately linked and connected. It is. The rotating cam 45 is formed in a polygonal shape in order to more frequently double the number of vertical movements of the striker 35 with respect to the rotational speed of the rotating shaft 41S.

  In the above configuration, the workpiece W is clamped by a workpiece clamping device provided in a workpiece positioning device (not shown) in the punch press, and the workpiece W is moved and positioned in the X and Y axis directions with respect to the processing position in the punch press to perform punching processing. When a punching process or the like is performed, burrs are generated at the lower part of the processing edge WE of the workpiece W. In order to remove burrs generated on the machining edge WE of the workpiece W, the workpiece pressing means 7 and the burr removing unit 37 in the punch press are positioned at the machining position.

  Thereafter, the processing edge WE to be deburred of the workpiece W is positioned at a position corresponding to the striker 35 in the deburring unit 31 by the workpiece positioning device. When the striker 13 in the punch press is lowered and the work pressing means 7 is lowered, the rotating member 17 in the work pressing means 7 comes into contact with the upper surface of the work W, and the upper surface of the processing edge WE or the upper surface near the processing edge WE is observed. It can be moved freely.

  As described above, when the rotation actuator 41 is driven to rotate while the upper surface of the workpiece W is relatively movably pressed by the workpiece pressing means 7, the rotating cam 45 is rotated. Therefore, the striker 35 that is always pressed downward by the elastic member 37 and whose lower surface is in sliding contact (contact) with the rotary cam 45 is moved up and down in response to the rotation of the rotary cam 45. become. When the striker 35 is moved up against the urging force of the elastic member 37, a burr hitting pressure part 39 provided on the upper part of the striker 35 is generated below the machining edge WE of the workpiece W. The burr is struck (struck), the burr is crushed and a part of the burr is crushed to remove the burr.

  When the striking element 35 is lowered by the urging force of the elastic member 37, the burr striking pressure part 39 of the striking element 35 enters the upper surface of the support base 33 and separates from the workpiece W. It is easy to move the workpiece W in the X and Y directions with respect to 33.

  That is, since the vertical movement of the striker 35 is performed at high speed, the striker 35 strikes the burr of the workpiece W to remove the burr, and the striker 35 leaves the workpiece W to release the workpiece W. Is repeated at high speed. Therefore, the fine movement of the workpiece W in the X and Y directions is performed when the striker 35 is in a state where the workpiece W is released. Therefore, the workpiece W can be moved smoothly, and even if the workpiece W is a thin plate or the width of the ridge after processing is small, burrs are removed without imparting deformation to the workpiece W. It is something that can be done.

  In the above-described configuration, the striker 35 is moved up and down by the rotation of the rotary cam 45, and the burr hitting portion 39 provided on the upper portion of the striker 35 directly hits the burr generated at the lower portion of the machining edge WE in the workpiece. (Blow). Therefore, a large load when the hitting part 39 hits the burr is directly transmitted to the rotary cam 45 through the hitting element 35. Therefore, wear of the rotating cam 45 is likely to occur at an early stage, and wear and damage to the rotating system of the rotating cam 45 are likely to occur.

  Further, in order to suppress overload when the burr is crushed by the striker 35, if the amount (lap amount) of the batter 35 that directly contacts the workpiece and crushes the workpiece is reduced, the crushing amount of the burr is reduced. Depending on the material of the workpiece, irregularities are generated in the crushed portion of the burr and there is a problem in improving the appearance. Therefore, further improvements have been desired in the conventional configuration.

  The present invention has been made in view of the above-described problems, and is a burr removing device for removing burrs generated on the lower surface of a workpiece processed by a plate material processing machine, the work table in the plate material processing machine or A base member that can be attached to and detached from the die holder is provided with a striking element holder that can be moved up and down, and a striking element that strikes the burr from below is urged upward and downward to the striking element holder. It is characterized by having prepared.

  Further, in the burr removing device, the striker is provided so as to be movable up and down in a vertical cylindrical part provided in the striker holder, and is detachably screwed onto the cylindrical part from above. The structure is characterized in that the upward pull-out is restricted by an annular nut member, and further provided with a rotation restricting means for restricting the rotation of the nut member relative to the tubular portion.

  Further, in the burr removing device, on the base member, a support base that supports the striker holder so as to be movable up and down is provided, and an inner peripheral surface of a through hole that is inserted through the cylindrical portion so as to be movable up and down. A rotation restricting surface provided on the outer peripheral surface of the nut member and a rotation restricting slidable contact surface that slides up and down movably on a rotation restricting surface formed on the outer peripheral surface of the cylindrical portion.

  Further, in the burr removing device, the vertical movement of the striker holder is configured by a cam rotated by an actuator.

  According to the present invention, since the striker holder that is moved up and down by the rotation of the cam is provided with the striker so as to be movable up and down and biased upward, the striker hits the burr of the workpiece. When pressing and crushing, the impact is absorbed by the urging means, and the above-described problems can be solved.

It is a section explanatory view showing the composition of the burr removal device concerning a 1st embodiment of the present invention. It is sectional explanatory drawing which shows the structure of the burr | flash removal apparatus which concerns on the 2nd Embodiment of this invention. It is sectional explanatory drawing which shows the structure of the conventional burr | flash removal apparatus.

  Hereinafter, a deburring device according to an embodiment of the present invention will be described with reference to the drawings. Components having the same functions as those of the conventional configuration described above are denoted by the same reference numerals, and redundant description is omitted. .

  Referring to FIG. 1, a deburring apparatus according to an embodiment of the present invention is mounted on a lower mold holder (not shown in FIG. 1) in a plate material processing machine in the same manner as the conventional deburring apparatus 1 described above. A base member 27 </ b> A corresponding to the base member 27 is used. The base member 27A is provided with an actuator for vertical movement (not shown in FIG. 1) corresponding to the rotation actuator 41.

  A support base 33A corresponding to the support base 33 is integrally attached to the upper portion of the base member 27A by a fixture (not shown) such as a bolt, and the cam is rotated by the vertical movement actuator. 45A is rotatably provided. In the support base 33A, a striker holder 47 that is moved up and down by the rotation of the cam 45A is provided so as to freely move up and down. Between the striker holder 47 and the support base 33A, an elastic member 49 such as a coil spring that constantly urges the striker holder 47 downward is mounted.

  The striker holder 47 is provided with a cylindrical portion 47T that is inserted into a vertical through hole 33H formed in the support base 33A. In the tubular portion 47T, an appropriately shaped striking element 51 such as a ball for pressing and crushing a burr generated on the lower surface of the processing edge of the workpiece W from below is provided so as to freely move up and down. Has been. In order to restrict the striker 51 from coming out of the tubular portion 47T, an annular nut member 53 is detachably screwed to the tubular portion 47T from above.

  The outer shape of the upper part of the nut member 53 is formed in a regular hexagonal shape, and a cylindrical part screwed into the cylindrical part 47 of the striker holder 47 is provided at the lower part. And the said striker 51 is provided in the said cylindrical part in the nut member 53 so that a vertical movement is possible. Between the spring seat 55 provided on the lower side of the striker 51 and the striker holder 47, an elastic member 57 such as a coil spring that constantly presses and urges the striker 51 upward is mounted. It is.

  Accordingly, the striker 51 is always pressed and urged upward by the urging force of the elastic member 57, and always protrudes upward from the upper end surface of the nut member 53. Then, the upper portion of the striker 51 acts to press the lower surface of the work W supported on the upper surface of the support base 33A when the impactor holder 47 is moved upward by the action of the cam 45A. It is what you make.

  In the above configuration, as shown in FIG. 1, when the machining edge of the workpiece W is on the upper side corresponding to the striker 51, when the cam 45A is rotated by the actuator, the striker holder 47 is moved downward by the rotation of the cam 45A. It is moved up and down via the provided roll 47R. Therefore, the nut member 53 provided in the striker holder 47 moves up and down integrally, and the striker 51 moves up and down. When the striker 51 moves up, the striker 51 strikes and removes the burrs generated at the lower part of the machining edge of the work W, thereby crushing and removing the burrs.

  In addition, as a structure of the vertical drive mechanism for moving the said striker holder 47 up and down, it can also be set as the cam which moves reciprocatingly not only in the rotating cam. Further, the striking element holder 47 may be moved up and down by a small vertical movement actuator that moves up and down.

  As described above, when the striker 51 strikes the burr, the striker 51 comes into contact with the burr and stops moving upward, and when the striker holder 47 moves relatively upward, the elastic member 57 is compressed, It will absorb the excessive impact when hitting. Therefore, for example, even when the heights of the burrs are different, the striking force when the striker 51 strikes the burrs is substantially constant. In the case where chamfering is performed, the amount of chamfering is substantially constant.

  In other words, according to the above configuration, even when the amount of lap between the striker 51 and the workpiece is increased, the impact when the striker 51 strikes the workpiece is absorbed by the elastic member 57. Therefore, the amount of burr crushing by the striker 51 is constant, and the quality of the appearance is improved. In addition, wear of the cam 45A is suppressed, and the load on the rotating system of the cam 45A is reduced, so that the conventional problems as described above can be solved.

  Since the nut member 53 is screwed and fixed to the striker holder 47 from above, the nut member 53 can be easily removed from the striker holder 47. Accordingly, the elastic member 57, the striker 51, etc. can be attached and removed in accordance with the material of the workpiece W, and when the workpiece is, for example, Al, it is possible to prevent the striking pressure from becoming excessive. It is.

  Further, the nut member 53 can be adjusted up and down with respect to the striker holder 47, and the vertical stroke position of the striker 51 can be adjusted.

  When the urging force of the elastic member 57 is adjusted, the nut member 53 is formed in a long cylindrical shape, and an adjustment screw is screwed into the nut member 53 so that the position can be adjusted. A configuration in which the compression rate of the member 57 is adjusted is also possible.

  By the way, the structure of the work pressing means 7A corresponding to the above-described conventional work pressing means 7 will be described. The work pressing means 7A according to this embodiment is a cylindrical guide supported by the upper mold holder 3 so as to be movable up and down. A member 61 is provided. The guide member 61 is always urged and supported upward by a lifter spring (not shown in FIG. 1).

  A retainer collar 63 is screwed to the upper portion of the guide member 61, and a punch head 67 is screwed and fixed to an upper end portion of a punch driver 65 that passes through the retainer collar 63 so as to be movable up and down. An elastic member 69 such as a strong spring is mounted between the punch head 67 and the retainer collar 63.

  In the lower part of the guide member 61, a rotating body holder 19A provided with a rotating member 17A corresponding to the rotating member 17 is rotatably mounted. An elastic member 71 such as a coil spring is mounted between the lower surface of the punch driver 65 in the guide member 61 and the rotating body holder 19A.

  Therefore, according to the said structure, the compression rate of the said elastic member 71 can be adjusted by adjusting the descending position of the striker 13, and the pressing force when pressing the workpiece | work W with the said rotating member 17A can be adjusted. It can be done. Therefore, the pressing force of the workpiece W by the rotating member 17A can always be adjusted to an appropriate pressing force.

  FIG. 2 shows the configuration of the burr removing device according to the second embodiment of the present invention, and the same reference numerals are given to the components having the same functions as the components in the above-described embodiment, so that they are duplicated. Description is omitted.

  As described above, when the cam 45A is rotated at a high speed by a rotation actuator such as an air motor, the striker holder 47 is moved up and down at a high speed. Thus, when the striker holder 47 moves up and down at high speed, the nut member 53 may be loosened due to vibration caused by high-speed up and down movement. In view of this, in the second embodiment, a rotation restriction means (rotation prevention means) 73 for restricting the rotation of the nut member 53 with respect to the cylindrical portion 47T of the striker holder 47 is provided. is there.

  As the configuration of the rotation restricting means 73, various configurations can be adopted because the rotation of the nut member 53 with respect to the tubular portion 47T may be restricted. For example, a regulating member such as a pin that can contact or engage with each side or corner of the nut member 53 whose upper outer shape is a regular hexagon (regular polygon) is arranged on the upper surface of the tubular portion 47T. It is also possible to adopt a configuration that is urged and provided in a protruding and protruding direction.

  That is, in the above configuration, in a state where the restriction member is immersed from the upper surface of the tubular portion 47T, the nut member 53 is appropriately screwed (screwed) into the tubular portion 47T, and then the restriction member is tubular. The rotation of the nut member 53 is restricted by projecting from the upper surface of the shaped portion 47T and causing it to interfere with an appropriate side or corner of the nut member 53.

  The rotation restricting means 73 in this embodiment is configured as follows. That is, the nut member 53 is formed in a regular polygon such as a regular hexagon when viewed from above. And the upper outer peripheral surface in the said nut member 53 is formed in the perpendicular | vertical plane which forms a polygon, and this perpendicular | vertical plane comprises the rotation control surface 53F as an example. The rotation regulating surface 53F may be a curved surface that is appropriately curved in the horizontal direction as long as it is vertical.

  A rotation restricting surface 47F that is vertically aligned with the rotation restricting surface 53F of the nut member 53 is formed on a part of the outer peripheral surface of the cylindrical portion 47T in the striker holder 47. The rotation restricting surface 47F may be a vertical plane or a horizontal curved surface as long as it is perpendicular to the rotation restricting surface 53F of the nut member 53.

  In the support base 33A, a rotation restricting surface 33F is formed on the inner peripheral surface of the through hole 33H that is inserted through the tubular portion 47T of the striker holder 47 so as to be movable up and down. The rotation restricting surface 33F is a restricting surface corresponding to the rotation restricting surface 53F of the nut member 53 and the rotation restricting surface 47F of the tubular portion 47T, and is slidably contacted vertically.

  Therefore, when the striker holder 47 moves up and down with respect to the support base 33A, the rotation of the nut member 53 is in a restricted state. Therefore, the nut member 53 is not loosened by vibration when the striker holder 47 moves up and down at high speed.

W Work 5 Die holder 27A Base member 47 Impactor holder 51 Impactor 53 Nut member 55 Spring seat 57 Elastic member

Claims (4)

  A burr removing device for removing burrs generated on a lower surface of a workpiece machined by a plate material processing machine, wherein a striker holder is moved up and down on a base member detachable from a work table or a die holder in the plate material processing machine. A burr removing device comprising a striking element that is movably provided, and that strikes the burr from below, and is urged upward and downward on the striking element holder.   2. The burr removing device according to claim 1, wherein the striker is provided in a vertically movable cylindrical portion provided in the striker holder so as to be movable up and down and detachable from the upper side from the cylindrical portion. The burr is configured to be restricted from being pulled upward by a screwed annular nut member, and further includes a rotation restricting means for restricting the rotation of the nut member with respect to the cylindrical portion. Removal device.   3. The burr removing device according to claim 2, further comprising: a support base on the base member that supports the striker holder so as to be movable up and down, and an inner peripheral surface of a through hole that is inserted through the cylindrical portion so as to be movable up and down. A rotation restricting surface provided on the outer peripheral surface of the nut member, and a rotation restricting sliding contact surface slidably contacting the rotation restricting surface formed on the outer peripheral surface of the cylindrical portion. Removal device.   4. The burr removing device according to claim 1, wherein the burr child holder is vertically moved by a cam rotated by an actuator.

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