JP2012016774A - Multiaxis punching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust a punching accuracy at a low cost.SOLUTION: A multiaxis punching device includes a guide plate 21 designed to hold a head holder 20 holding a punch head. The guide plate 21 is provided with a holding hole 36 for the head holder 20, greater than an outer diameter of the head holder 20, and an adjusting member 41 is detachably disposed in the holding hole 36. The guide plate 21 is also provided with a ball plunger 48 pressing the head holder 20 against the adjusting member 41. The head holder 20 is positioned in the holding hole 36 by pressing the head holder 20 against the adjusting member 41 by the ball plunger 48.

Description

  The present invention relates to a multi-axis punching device that simultaneously operates a plurality of punch units having punch pins to form a plurality of holes in a sheet-like workpiece such as a ceramic green sheet or a flexible substrate film.

  A punching device (also called a punching machine) has a die placed below a work placement space for positioning a sheet-like work, a punch head having punch pins above the work placement space, and the punch head as a die. By arranging a punch unit composed of an actuator to be brought into contact with and separating from the actuator and operating the punch unit under the control of the actuator, holes can be simultaneously formed in the sheet-like workpiece. Among these punching devices, a multi-axis punching device that can form a plurality of holes in a sheet-like workpiece by arranging a plurality of punch units at a predetermined interval and simultaneously operating a plurality of punch pins by an actuator. Is also known (see Patent Documents 1 and 2). The plurality of punch units are supported by penetrating and holding cylindrical head holders that hold the punch heads in guide plates having through holes formed at predetermined positions and pitches.

JP 2003-266383 A JP 2001-252894 A

In such a multi-axis drilling apparatus, it is necessary to previously adjust the drilling accuracy such as the pitch and position of a plurality of holes. This adjustment is performed by first assembling each punch unit to the guide plate, measuring a plurality of holes in the sheet-like workpiece by test drilling, and correcting the positions of the through holes provided in the guide plate based on the measurement results. become. This position correction is performed by mounting the eccentric bush on the punch head. However, when the hole pitch is narrow or the like cannot be dealt with, the guide plate is manufactured again. Thereafter, test drilling and measurement are performed again, and if the accuracy cannot be obtained, the eccentric bush or the guide plate is recreated.
As described above, adjustment of the drilling accuracy takes time and cost.

  Accordingly, an object of the present invention is to provide a multi-axis drilling apparatus that can easily adjust the drilling accuracy at low cost.

In order to achieve the above object, the invention according to claim 1 is characterized in that the holding hole of the head holder in the guide plate is formed larger than the outer diameter of the head holder, and the adjustment member is detachably provided in the holding hole. The guide plate is provided with pressing means for pressing the head holder against the adjustment member, and the head holder is positioned in the holding hole by pressing the head holder against the adjustment member by the pressing means.
According to a second aspect of the present invention, in the configuration of the first aspect, the pressing means is provided so as to press the head holder in a direction orthogonal to the direction in which the punch units are arranged side by side. A reference plane in two directions that is inclined by 45 ° from the direction and orthogonal to each other is provided, and a pair of adjustment surfaces along the reference surface is formed on the adjustment member, and the position of the adjustment surface on the adjustment member is adjusted with the adjustment surface. By changing in the orthogonal direction, the position of the adjustment member in the holding hole is changed to enable adjustment of the position of the head holder.
According to a third aspect of the present invention, in the configuration of the second aspect, the adjustment member is formed with a pair of inclined surfaces along the reference surface, and shim plates whose outer surfaces are the adjustment surfaces can be attached to and detached from the inclined surfaces. And the position of the adjusting member can be adjusted by changing the thickness of the shim plate.
According to a fourth aspect of the present invention, in the configuration of the second or third aspect, the reference surface is formed in a block body that is detachably assembled into the holding hole.

According to the first aspect of the present invention, even if the processing accuracy of the punch unit and the guide plate is low, the position and pitch of the punch pins can be increased only by replacing the adjustment member or changing the thickness of the adjustment member. Adjustable with accuracy. Also, it is not necessary to re-create the guide plate when the punch unit is replaced. Therefore, adjustment of drilling accuracy can be performed easily and at low cost.
According to the second aspect of the invention, in addition to the effect of the first aspect, there is no problem even if adjacent punch units are close to each other due to the narrow pitch of the holding holes by setting the pressing direction and the adjusting direction. Drilling accuracy can be adjusted.
According to the third aspect of the present invention, in addition to the effect of the second aspect, it is not necessary to modify the adjustment member, and the position and pitch of the punch pins can be easily adjusted by simply changing the thickness of the shim plate. It becomes.
According to the fourth aspect of the present invention, in addition to the effect of the second or third aspect, the processing of the guide plate is facilitated, and the replacement and remanufacturing due to wear of the reference surface can be easily handled.

It is a side view of a multi-axis drilling apparatus. It is a top view of a processing chamber. It is the A section enlarged view of FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is C arrow line view of FIG. It is the DD sectional view taken on the line of FIG. It is explanatory drawing of a V-shaped block and an adjustment member. It is decomposition | disassembly explanatory drawing of a V-shaped block and an adjustment member. It is explanatory drawing of the example of a change of an adjustment member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an example of a multi-axis drilling apparatus. The multi-axis drilling apparatus 1 has a processing chamber 3 at the top of a machine body 2, and on a base 4 provided at the bottom of the processing chamber 3, As shown in FIG. 2, a work table 5 on which a holding frame 6 holding a sheet-like work (hereinafter simply referred to as “work”) W is placed, and the holding frame 6 is moved back and forth and right and left on the work table 5. A planar servomotor 7 is provided. The planar servo motor 7 has a well-known configuration composed of a fixed portion 8 having a large number of permanent magnets arranged on the upper surface and a movable portion 9 having a plurality of electromagnets arranged on the lower surface and connected to the holding frame 6. The work W can be positioned at an arbitrary position on the work table 5 by the horizontal movement of the holding frame 6 in the X direction and the Y direction.

  A frame 10 is installed in the left-right direction above the base 4 between the work table 5 and the flat servo motor 7, and a multi-punch unit 14 for punching the work W is installed on the frame 10. As shown in FIGS. 3 and 4, the multi punch unit 14 has three sets of punch units 15, 15,... Arranged side by side in the left-right direction (X direction) above the work arrangement space on the work table 5. A die unit 16 (FIG. 1) corresponding to each punch unit 15 is provided below the work arrangement space.

  Each punch unit 15 includes an actuator portion 17 that drives the punch pin 19 and a punch head 18 that holds the punch pin 19 below the actuator portion 17. The actuator portion 17 is connected to the piston rod 13 of the air cylinder 12 supported downwardly via the bracket 11 above the frame 10, and the punch head 18 is a cylindrical head holder 20 fixed on the lower surface of the frame 10. Is held up and down. Each head holder 20 is held by a guide plate 21 fixed to the lower surface of the frame 10.

  The actuator portion 17 connects a pair of leg portions 25 and 25 via a thin neck portion 24 to an upper portion of a U-shaped fixing plate 23 fixed to the center of a base 22 connected to the piston rod 13. . Inside the fixed plate 23, a movable plate 27 connected to each leg portion 25 via a thin connecting portion 26 is provided, and the movable plate 27 is connected to the fixed plate 23 via a piezoelectric element 28. Yes. On the other hand, the leg portions 25 and 25 extend downward through the outside of the fixed plate 23 and connect the rod 31 via the hammer 30 between the end portions of the leaf springs 29 and 29 respectively connected to the lower ends thereof. Yes. The lower end of the rod 31 is connected to the punch pin 19. The punch head 18 has an upper end connected to a horizontal plate 33 attached to the lower end of the base 22 in a through hole 32 provided in the frame 10.

  Therefore, when the piston rod 13 of the air cylinder 12 is extended, the base 22 and the punch head 18 are lowered to a punch position close to the die unit 16. In this state, when the piezoelectric element 28 expands and contracts in the vertical direction by energization, the leg portions 25 and 25 open and close, the hammer 30 swings up and down via the leaf springs 29 and 29, and the punch pin 19 is die-attached via the rod 31. The work 16 can be punched by hitting the unit 16. A cap 34 is attached to the punch head 18 to prevent the workpiece W from being lifted at the punch position.

  As shown in FIGS. 5 and 6, the guide plate 21 has a square block shape fixed to the frame 10 with bolts 35, and a holding hole 36 through which the head holder 20 passes is formed at the center. The holding hole 36 has an inner diameter slightly larger than the outer diameter of the head holder 20, and has a short width smaller than the inner diameter on one side in the Y direction perpendicular to the direction in which the punch units 15 are arranged side by side. A communication recess 37 at the bottom is continuously provided. At the rear end of the communication recess 37 (the holding recess 36 side is the front in the communication recess 37), as shown in FIGS. 7 and 8, a pair of references orthogonal to each other in the XY direction on the head holder 20 side. In a state where the V-shaped block 38 as a block body having the surfaces 39, 39 is in contact with the rear portion of the communication recess 37 and the left and right inner surfaces, the guide plate 21 is fixed by the fixing bolt 40 from the front between the reference surfaces 39, 39. It is detachably fixed.

  An adjustment member 41 is provided between the head holder 20 and the front of the V-shaped block 38. The adjusting member 41 has a curved surface 42 along the outer shape of the head holder 20 on the front surface, and a pair of inclined surfaces on the rear surface facing the reference surface 39 of the V-shaped block 38 and parallel to the reference surface 39, respectively. 43, 43, and can be moved back and forth and left and right within the communication recess 37 with a width slightly smaller than the short width of the communication recess 37 in the left-right direction. Further, a shim plate 44 having a predetermined thickness is detachably fixed to each inclined surface 43 of the adjustment member 41 with a fixing screw 45. The outer surface of the shim plate 43 is an adjustment surface 46 that faces the reference surface 39 of the V-shaped block 38 and is parallel to the reference surface 39.

47 is a pressing bolt that is loosely inserted into the guide plate 21 and the V-shaped block 38 from the rear portion of the communication recess 37 and is screwed to the adjusting member 41. When the pressing bolt 47 is rotated in the screwing direction, the adjusting member 41 is moved backward. The shim plates 44 and 44 are pressed against the reference surfaces 39 and 39 of the V-shaped block 38 by screw feeding.
On the other hand, on the opposite side of the communication recess 37 across the holding hole 36 in the guide plate 21, a ball plunger 48 as a pressing means is screwed along a straight line in the Y direction passing through the center of the holding hole 36. It can be moved in and out of the holding hole 36 by a rotation operation. On the side surface of the head holder 20 on the ball plunger 48 side, a chamfered portion 50 with which the ball 49 at the tip abuts is formed.

In the multi-axis drilling device 1 configured as described above, the head holder 20 of the punch unit 15 is set on the guide plate 21 containing the V-shaped block 38 and the adjusting member 41, and the adjusting member 41 is moved to the V-shape by the pressing bolt 47. The ball plunger 48 is screwed in a state where the block 38 is pressed. Then, the head holder 20 pressed by the ball plunger 48 is pressed by the curved surface 42 of the adjustment member 41 and fixed in the holding hole 36.
Thus, with all the punch units 15 assembled, the drilling accuracy (center position and pitch of the punch pins 19) is confirmed. This confirmation can be easily performed by actually drilling the workpiece W and measuring the positions of the holes 58, 58,... And the horizontal pitches P1, P2 as shown in FIG.

  And when it is necessary to adjust the position of the one or several punch pins 19 based on a measurement result, in the adjustment member 41 to which the corresponding head holder 20 is pressed, the position of the adjustment surface 46 of one or both shim plates 44 Is changed in a direction orthogonal to the surface. This change can be made by cutting the shim plate 44 itself, stacking a plurality of shim plates 44 in the thickness direction, or exchanging the shim plates 44 with different thicknesses.

  If the position of the adjustment surface 46 is changed, the adjustment member 41 pressed by the adjustment surface 41 slightly moves in the communication recess 37 in the XY directions orthogonal to each other, and the head holder 20 pressed by the adjustment member 41 is also adjusted by the adjustment member 41. At the same time, it moves slightly in the holding hole 36 in the XY directions. That is, as shown in FIG. 7, the position of the punch pin 19 can be changed by changing the distance D between the reference surface 39 and the punch pin 19 in the XY directions. After the adjustment, test processing or the like is performed again to confirm the position and pitch of the punch pins 19, and the position of the adjustment surface 46 is changed if further adjustment is necessary. By repeating this, the position and pitch of the punch pins 19 can be set appropriately.

  Thus, according to the multi-axis drilling device 1 of the above embodiment, the holding hole 36 of the head holder 20 in the guide plate 21 is formed larger than the outer diameter of the head holder 20, and the adjustment member 41 is attached to and detached from the holding hole 36. A ball plunger 48 that presses the head holder 20 against the adjustment member 41 is provided on the guide plate 21, and the head holder 20 is pressed against the adjustment member 41 by the ball plunger 48. The holder 20 is positioned. As a result, even if the processing accuracy of the punch unit 15 and the guide plate 21 is low, the position and pitch of the punch pins 19 can be adjusted with high accuracy simply by replacing the adjustment member 41 or changing the thickness of the adjustment member 41. It becomes possible. Further, it is not necessary to remanufacture the guide plate 21 when the punch unit 15 is replaced. Therefore, adjustment of drilling accuracy can be performed easily and at low cost.

  In particular, here, the ball plunger 48 is provided so as to press the head holder 20 in a direction orthogonal to the direction in which the punch units 15 are juxtaposed, while in the holding hole 36 inclined by 45 ° from the pressing direction by the ball plunger 48. The reference surfaces 39 and 39 in two directions orthogonal to each other are provided, the adjustment member 41 is provided with a pair of adjustment surfaces 46 and 46 along the reference surfaces 39 and 39, and the position of the adjustment surface 46 in the adjustment member 41 is adjusted. By changing in the direction orthogonal to the surface 46, the position of the head holder 20 can be adjusted by changing the position of the adjustment member 41 in the holding hole 36. By setting the pressing direction and the adjusting direction, the punching accuracy can be adjusted without any trouble even if the pitch of the holding holes 36 is narrow and adjacent punch units 15 are close to each other.

Further, a pair of inclined surfaces 43, 43 are formed on the adjustment member 41 along the reference surfaces 39, 39, and shim plates 44, 44 whose outer surfaces are the adjustment surfaces 46 can be attached to and detached from the inclined surfaces 43, 43, respectively. Since the position of the adjustment member 41 can be adjusted by changing the thickness of the shim plate 44, it is not necessary to change the thickness of the shim plate 44 without changing the thickness of the shim plate 44. The position and pitch can be easily adjusted.
Further, since the reference surface 54 is formed in the V-shaped block 38 that is detachably assembled in the holding hole 36, the guide plate 21 can be easily processed, and can easily be replaced or remanufactured due to wear of the reference surface 39. it can.

In addition, the specific structure in the guide plate is not limited to the above form. For example, the V-shaped block is omitted and the reference surface is integrally formed on the inner surface of the communication recess, or other members such as bolts and coil springs are used as pressing means. It can be adopted.
Further, the adjustment member may be attached by stacking shim plates having relatively small thicknesses, and the position of the adjustment surface may be changed by changing the number of shim plates. Further, the directions of the reference surface and the adjustment surface are opposite to each other, a reference surface arranged in a mountain shape is formed on the holding hole side, and a V-shaped inclined surface is formed on the adjustment member side. It is also possible to attach a shim plate.

However, the adjusting member is not limited to a member provided with a shim plate. For example, as shown in FIG. 9, the holding hole 51 is formed in a square shape, and one corner 52 is formed in an arc shape matching the outer diameter of the punch head 18 so that the ball plunger 48 can be pressed in the diagonal direction. A pair of inner surfaces sandwiching the other corner portion 53 of the first plate are used as reference surfaces 54, 54, a curved surface 56 matching the outer diameter of the punch head between the punch head 18 and the corner portion 53, and the reference surfaces 54, 54. Further, an L-shaped adjustment member 55 having a pair of adjustment surfaces 57 and 57 parallel to each other may be interposed.
In this case as well, the punch head 18 is pressed against the curved surface 56 of the adjustment member 55 by the ball plunger 48 to perform positioning. However, each adjustment surface 57 is shaved or replaced with an adjustment member 55 having a different thickness. Thus, the distance D between the reference surface 54 and the punch pin 19 in each XY direction can be changed, and the position and pitch of the punch pin 19 can be changed.

And the adjustment of the punch pin by the adjusting member is not limited to the form in which the punch pin is moved in the linear direction in two directions inclined by 45 ° from the pressing direction by the pressing means as in the above-mentioned form, for example, an arc-shaped adjusting member in the circular holding hole It is also possible to adjust the punch pin by changing the position of the adjustment member in the circumferential direction of the holding hole or by laminating a plurality of layers in the radial direction. In this case, according to the change in the position of the adjusting member in the circumferential direction, for example, a ball plunger may be provided in a plurality of different radial directions, or a plurality of screw holes may be provided to change the position of the ball plunger. Is desirable.
In addition, the number of punch units, the direction in which the punch units are arranged, the structure of the punch units themselves, etc. are not limited to the above-described form, and can be changed as appropriate. The mechanism for moving the workpiece is not limited to a planar servo motor. And a two-axis actuator using a servo motor).

  1 .... Multi-axis drilling device 2 .... Airframe 3 .... Processing chamber 4 .... Base 10 ... Frame 12 ... Air cylinder 14 .... Multi punch unit 15 .... Punch unit 16, ... · Die unit, 17 · · Actuator, 18 · · Punch head, 19 · · Punch pin, 20 · · Head holder, 21 · · Guide plate, 25 · · Leg portion, 28 · · Piezoelectric element 36, 51 · · · Holding hole, 37 .. Communication recess, 38 .. V-shaped block, 39 .. Reference surface, 40 .. Fixing bolt, 41, 55 .. Adjusting member, 43 .. Inclined surface, 44.・ Adjustment surface, 47 ・ ・ Pressure bolt, 48 ・ ・ Ball plunger, 58 ・ ・ Hole.

Claims (4)

While installing the die below the work placement space where the sheet-like work is positioned, on the upper side of the work placement space, a plurality of punch units for lifting and lowering punch heads having punch pins on the axis are arranged in parallel in a predetermined direction, A multi-axis drilling device in which cylindrical guide holders that respectively hold the punch heads are passed through and held in guide plates that are horizontally supported above the workpiece placement space,
A holding hole of the head holder in the guide plate is formed larger than an outer diameter of the head holder, and an adjustment member is detachably provided in the holding hole, and the head holder is attached to the adjustment plate in the guide plate. A multi-axis drilling apparatus, comprising: a pressing unit that presses the head holder, wherein the head holder is positioned in the holding hole by pressing the head holder against the adjustment member by the pressing unit.   The pressing means is provided so as to press the head holder in a direction orthogonal to the direction in which the punch units are juxtaposed, and in the holding hole, they are inclined at 45 ° from the pressing direction by the pressing means and are orthogonal to each other. By providing a reference surface in the direction, forming a pair of adjustment surfaces along the reference surface on the adjustment member, and changing the position of the adjustment surface in the adjustment member in a direction orthogonal to the adjustment surface, The multi-axis drilling device according to claim 1, wherein the position of the head holder can be adjusted by changing the position of the adjustment member in the holding hole.   A pair of inclined surfaces along the reference surface is formed on the adjustment member, and shim plates whose outer surfaces are adjustment surfaces are detachably attached to the inclined surfaces, and the thickness of the shim plate is changed. The multi-axis drilling apparatus according to claim 2, wherein the position of the adjustment member is adjustable.   The multiaxial drilling device according to claim 2 or 3, wherein the reference surface is formed in a block body that is detachably assembled into the holding hole.

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