JPH0627283Y2 - Work clamp mechanism for punching machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a work clamp mechanism for a punching machine.

[Prior Art] Conventionally, a so-called uniaxial drilling machine with one tool clamps a plate-like work on a table on the front side, and runs in the left-right direction and the front-back direction on a machine base behind the table. It has a drill unit. The drilling position on the work is stored in advance in a control device using a microcomputer. The drill unit is numerically controlled based on a set value in the control device, travels in the front-rear direction, left-right direction, and on the machine base, and pierces a tack hole or the like at a predetermined position of the work.

[Problems to be solved by the invention] However, the conventional punching machine described above has a large number of clampers that clamp the peripheral edge of a work when changing from a work having a large shape to a small work and vice versa. However, since a lot of screw holes are provided in the table and the screw hole at the optimum position is selected and screwed for each time of the above position change, it is extremely troublesome. The work efficiency was extremely poor. Moreover, the positions of the screw holes are not necessarily drilled at the optimum positions corresponding to the size of the work. When the screw holes are not provided at the optimum positions, the clamper using the closest screw hole is used. It was very inconvenient because it was necessary to attach a clamp, a sufficient clamping force could not be obtained, and the work could not be clamped.

Therefore, in view of the above circumstances, the present invention provides a work clamp mechanism for a punching machine that can clamp the clamper with respect to the workpiece mounting portion without restricting the mounting position of the clamper regardless of the shape of the workpiece. It is something to do.

"Means to be solved by the invention" In the invention, in order to achieve the above object, a work is placed,
Further, a work mounting part having a clamp mechanism for fixing the work, a movable table which is provided behind the work mounting part and is movable in parallel with the longitudinal direction, and mounted on the movable table, A drill unit movable in a direction orthogonal to the moving direction of the table, two rails installed between both end plates of the U-shaped frame of the work mounting portion in parallel with the moving direction of the moving table, and this rail. It is composed of a plurality of receiving bases 22 provided between the receiving bases and provided on the upper surface thereof for receiving the work, and a pressing plate 36 for pressing the work provided on the receiving base 22. The pressing plate 36 and the receiving base 22 are provided. In the punching machine for clamping and clamping the work at a predetermined position of the work mounting part, a plurality of hydraulic clampers are arranged at predetermined intervals on the moving table side of the U-shaped frame of the work mounting part and the rail is provided. , A plurality of movable intermediate horizontal rods are arranged in parallel with both side end plates, and these intermediate horizontal rods and both side end plates of the U-shaped frame of the work attaching part 1 also hold the side surface of the work. And an origin setting member for restricting the position of the work side end is arranged on each of the intermediate horizontal rod and the U-shaped frame of the work mounting portion, and a receiving member movably provided on the rail. Stand 22
A manual clamper that is slidable along the guide groove of the cradle 22 is provided at the operator side end of the above, and the upper surface of the uppermost layer of the work is pressed against the manual clamper to stand vertically on the cradle 22. It comprises a pressing plate 36 that can move up and down along the screw rod provided, and moves the manual clamper along the guide groove of the receiving table 22 to move the work peripheral edge placed on the receiving table 22 to the moving table. The workpiece is positioned by abutting against the origin setting member on the side and fixed to the hydraulic clamper of the workpiece mounting portion, and the pressing plate 36 of the manual clamper is lowered along the screw rod 38 to move the upper surface of the workpiece. It is characterized in that the work is pressed and clamped and fixed on the pedestal 22.

[Operation] In the present invention, according to the above-mentioned means, a plurality of pedestals are moved along the rails so as not to be located at a position where the work should be pierced, and the pedestals are fixed by erection. Place the work on the receiving seat of the work piece, and put the side edge of the work on the U-shaped frame of the work attachment part and the origin setting member provided on the intermediate horizontal rod. The work is fixed by a rod, the work is fixed by a hydraulic clamper, each manual clamper provided on the cradle is moved along the cradle to position the work, and the pressing plate of the manual clamper is screwed. The work can be fixed to the work mounting portion by lowering it along the rod and using the pressing plate and the pedestal. The workpiece can be positioned by the intermediate origin setting member, and moreover, a plurality of small workpieces can be arranged side by side. In the work replacement work, one of them can perform the punching work.

[Embodiment] An embodiment of a work clamp mechanism of a punching machine according to the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a work mounting portion, and 2 is a machine base. The work mounting portion 1 is a frame 3 framed by an angle member or the like, and support rods 4 are arranged side by side along the rear edge and both side edges of the work mounting portion 1 except the front side. Support rod 4
A plurality of hydraulic clampers 5 are fixedly installed at appropriate intervals, or mounted so as to be slidable and fixed at appropriate positions. In this case, the fixing means of the hydraulic clamper 5 with respect to the support rod 4 is such that when a set screw screwed to a part of the hydraulic clamper 5 is tightened, the tip of the set screw comes into pressure contact with the support rod 4. . An L-shaped left-side origin setting member 6 and a right-side origin setting member 7 are fixedly provided at both corners of the rear support rod 4. A first horizontal rod 8 and a second horizontal rod 9 are arranged at equal intervals between the support rods 4 on both sides. The first horizontal rod 8 and the second horizontal rod 9 are tiltably provided on the frame 3 via a pair of swing rods 10 and 11 in the front and rear directions. That is, the rocking rods 10 and 11 are rotatably supported by the frame 3 as shown in FIGS. 3 and 5, and are fixed to the frame 3 as shown in FIGS. 4 and 6. It has a screw hole 14 into which the set screw 13 is screwed in an upright state in contact with the member 12. Set screw 13
As shown in FIG. 6, a snap ring 15 is interposed in the shaft portion so that the snap ring 15 is engaged with the hole edge of the insertion hole 17 so that the snap ring 15 does not separate from the insertion hole 17 of the receiving member 12 even if it is loosened by the knob 16. It is supposed to meet. A hydraulic clamper 18 is slidably mounted on the first horizontal rod 8 and the second horizontal rod 9. A back plate 19 of the hydraulic clamper 18 has a set screw 20, and when the set screw 20 is tightened, the tip of the set screw 20 is brought into pressure contact with the first horizontal rod 8 or the second horizontal rod 9 and the hydraulic clamper 18 can be fixed to an appropriate position of the first horizontal rod 8 or the second horizontal rod 9. In addition, the rocking rods 10 on the rear side are shown in FIGS.
As shown in the figure, the L-shaped first intermediate origin setting member 21
a and the second intermediate origin setting member 21b are fixed. On the other hand, the frame 3 of the work mounting portion 1 is composed of two horizontal frames 3 extending in the longitudinal direction of the work mounting portion 1.
7a to 9d on each horizontal frame 3a.
As shown in the figure, rails 23 for slidably receiving the pedestals 22 are fixed. As shown in FIGS. 3 to 5, 10, and 11, each rail 23 has a portion where a part thereof is cut and the horizontal frame 3a is exposed as it is. As shown in FIGS. 4 and 5, the exposed portion has a first horizontal rod 8 and a second horizontal rod 9.
It has a notch recess 24 into which the first horizontal rod 8 and the second horizontal rod 9 are fitted when it is tilted. The exposed portion of the horizontal frame 3a located on the back side is shown in FIGS.
As shown in the figure, the pivot rail 25 is pivotally supported.
The rotating rail 25 has a length that is approximately half the cutting length of the rail 23 and can cover the cutout recess 24. As shown in FIG. 8, each rail 23 has a guide groove 26 in the lower part of the surface opposite to the surface facing each other, and the projection 27 of the lower part of the receiving base 22 can be slidably contacted in the guide groove 26. Insert it. The pedestal 22 is formed in a plate shape as shown in FIGS. 7 to 9, and is mounted so as to be bridged between the rails 23 by a lower sliding member 28. The sliding member 28 has the protrusion 27 and is provided with a set screw 29. When the set screw 29 is tightened, the set screw 2
The tip of 9 is pressed against the side surface of the rail 23 so that the pedestal 22 can be fixed to the rail 23. Cradle 22
Has guide grooves 30 on both upper side surfaces thereof, and the engagement protrusions 32 of the manual clamper 31 as the clamper are slidably engaged with the guide grooves 30 to mount the manual clamper 31 on the pedestal 22. . The work A is placed on the upper surface of the cradle 22.
A receiving seat 33 for receiving is fixedly provided. The number of the pedestals 22 mounted between the rails 23 can be freely selected according to the conditions such as the size of the work and the drilling position. In the manual clamper 31, as shown in FIGS. 8 and 9, a screw rod 35 is erected from a base portion 34 having the engaging projection 32.
Through the insertion hole of the pressing plate 36 to the screw rod 3
The nut 37, which is screwed to the screw 5, is tightened so that the pressing plate 36 presses the work A between the pressing plate 36 and the receiving seat 33. The lower surface of the pressing plate 36 is the work A.
The height can be adjusted so that it is substantially flush with the upper surface of the. Such adjustment involves screw rod 38 on base 34.
And the pressing plate 3 is attached to the screw rod 38.
6 and the screw rod 38
The nut 39 is screwed onto the nut 39, the hole edge of the insertion hole of the pressing plate 36 is placed on the nut 39, and the pressing plate 36 is moved up and down by turning the nut 39. Chip receiving boxes 40a and 40b are arranged below the work mounting portion 1.
As shown in FIG. 1, each of the chip receiving boxes 40a and 40b has a roller 62 and can be drawn out from below the work mounting portion 1 to the outside. Also, the chip receiving boxes 40a, 40
Reference numeral b shows a double bottom by a partition wall 43, and an upper portion serves as a tray 41 for receiving chips, and a lower portion serves as tanks 42a, 42b for receiving and storing cutting oil. The partition wall 43 has a mesh-shaped recovery hole 44.
A pump 46 is provided in the tanks 42a and 42b so that the nozzles 45 eject again.

As shown in FIG. 2, the machine base 2 supports a ball screw 48 along the longitudinal direction and can be rotated by a pulse motor 49. A moving table 50 is attached to the ball screw 48.
The receiving part of is screwed. The moving table 50 has a ball screw 51 in a direction orthogonal to the axial direction of the ball screw 48.
The ball screw 51 is rotated by the pulse motor 52. The ball screw 51 is screwed into the receiving portion of the drill unit 53. As shown in FIG. 1, the drill unit 53 is adapted to rotate by a motor 54 and move up and down by a hydraulic cylinder 55 to drill a work A.

The hydraulic clampers 5 and 18, the pump 46, the pulse motors 49 and 52, and the drill unit 53 are controlled via a controller 56 and a switchboard 57 in which a microcomputer is mounted. The hydraulic clampers 5 and 18 are provided on the left side area of the work mounting portion 1 as described above.
It is located in 4 areas, 2 middle areas and right area,
As shown in FIG. 13, the mode switching circuit 58 operates the first pattern to operate independently in every four areas, and the one in any area divided into the left side area and the right side area from the center of the work mounting portion 1. The second pattern to be operated and the third pattern to operate all of them at the same time can be selected. The mode switching circuit 58 includes the selection circuit 5
9 are connected so that the selection circuit 59 can select any one of the regions in the first pattern and the second pattern. To the selection circuit 59, a control device 56 that issues a drive command or a command for control operation, and a drive circuit 61 are connected, and the operation of the hydraulic clampers 5 and 18 can be controlled by the output of the drive circuit 61. .

In the above configuration, first, a case where the left-side origin setting member 6, the right-side origin setting member 7, the first intermediate origin setting member 21a, and the second intermediate origin setting member 21b are used to perforate four groups of works explain. As shown in FIG. 14, the first horizontal rod 8 and the second horizontal rod 9 are provided with rocking rods 10 and 11, respectively, and one rocking rod 10 is attached to a receiving member 12 with a set screw 13. Then, the work mounting portion 1 is exposed. On the other hand, a plurality of pedestals 22 are fixed between the rails 23 with set screws 29 at appropriate intervals so as not to be located at the position where the work A should be punched. Then, one corner of the work A of each group is positioned by applying it to the left origin setting member 6, the right origin setting member 7, the first intermediate origin setting member 21a, and the second intermediate origin setting member 21b, respectively. After that, the peripheral edges of the works A in each group are clamped by the hydraulic clampers 5, 18 and the manual clamper 31. At this time, each origin setting member 6 of the work A of each group
The vicinity of the end portions on the 7, 21a, 21b side is supported by a receiving table 22a having only a receiving seat 33a, and the hydraulic clamper 5,
18 so that it can be clamped securely. The manual clamper 31 is slid along the receiving table 22 so as to match the width of the work A and positioned, and then the work plate A is pressed against the receiving seat 33 by the pressing plate 36 to be clamped. The works A of each group are stacked a predetermined number of times and clamped as described above. The drill unit 53 is numerically controlled to index and move the position of drilling with reference to the L-shaped corners of the origin setting members 6, 7, 21a, 21b.
As a result, perforations are sequentially formed at predetermined locations. While the piercing work for one group of works is completed and the piercing work for the other group is completed, the work A of the group after the piercing work is clamped by the hydraulic clampers 5, 18 and the manual clamper 31. After releasing and removing from the work mounting part 1, the work to be punched next is mounted, and the hydraulic clampers 5, 1 are again mounted.
8 and the manual clamper 31 performs the setup work of clamping. After that, the above operation is repeated. By the way, work A
Depending on the drilling position, the sliding member 28 of the pedestal 22 may have to be positioned and fixed in the notch recess 24, but at this time, the turning rail 25 is turned to turn the notch recess 24. Position, the pedestal 22 is placed on the rotary rail 25 on the cutout recess 24, and the set screw 2 is placed as described above.
Fix at 9. At this time, the sliding member 28 on the front side of the cradle 22 can be sufficiently fixed only by slightly hanging it on the cut end portion of the rail 23 and mounting it. Conversely, if it becomes necessary to position and fix the sliding member 28 of the pedestal 22 between the end surface of the rotating rail 25 and the cut end surface of the rail 23, rotate the rotating rail 25 in the opposite direction. The sliding member 28 of the pedestal 22 is moved to the rotation rail 25, and the set screw 29 is moved.
Fix with. Also at this time, the sliding member 28 on the front side of the pedestal 22 can be sufficiently fixed only by slightly hanging it on the cut end portion of the rail 23 and mounting it. Further, when clamping a narrow work A, as shown in the chain double-dashed line in FIG. 3 and in FIG. 4, the rotary rail 25 is positioned on the notch recess 24, and the first horizontal rod 8 Alternatively, the hydraulic clamper 18 is slid along the second horizontal rod 9 to be inserted between the end surface of the rotating rail 25 and the cut end surface of the rail 23, and the work A is clamped by the hydraulic clamper 18. . Therefore, the hydraulic clamper 18 can position the work A according to the width of the work A and clamp the work A without coming into contact with the rail 23 and interfering with the rail 23.

Next, as shown in FIG. 15, two groups of long work B are provided.
The case where the holes are drilled will be described. Work B of each group
Has a long length, the hydraulic clamper 18 mounted on the first horizontal rod 8 and the second horizontal rod 9, the first intermediate origin setting member 21a, and the second intermediate origin setting member 21b.
When the work B is attached to the work B, the hydraulic clamper 18 interferes with the mounting of the work B. In order to eliminate this, first, the set screw 13 is loosened to tilt the rocking rods 10 and 11, respectively, and The moving rods 10 and 11 are fitted into the cutout recesses 24. By such fitting, the hydraulic clamper 18, the first intermediate origin setting member 21a, and the second intermediate origin setting member 21b are stored below the upper surface of the receiving seat 33 of the receiving base 22. Therefore, the work B is attached to the first horizontal rod 8 or the second horizontal rod 9 by the hydraulic clamper 18,
Without contacting the first intermediate origin setting member 21a and the second intermediate origin setting member 21b,
Can be attached to the work attachment part 1. Also at this time, as shown in FIG. 12, it is possible to fix the pedestal 22 to the rotary rail 25 by covering the cutout recess 24 with the rotary rail 25.

As shown in FIG. 16, even when a large group of works C is attached to the work attaching portion 1, the first horizontal rod 8 and the second horizontal rod 9 are placed in the notch recess 24 in the same manner as described above. The hydraulic clamper 18 into the receiving seat 33 of the pedestal 22.
The work C can be clamped to the work mounting portion 1 without any hindrance by storing the work C below the upper surface of the work C.

The size of the work to be clamped on the work mounting portion 1 is not such that the same size must be mounted in each group, and the pattern of the drilling position for the work in each group need not be the same. It can be set freely, and depending on the size of the shape of the work, either one of the first horizontal rod 8 or the second horizontal rod 9 can be stored downward and only the other can be used. it can.

The rotating rail 25 is not limited to the back side as in the above-described embodiment, but the front side rail 23 is cut so that the horizontal frame 3
It can also be attached to a location where a is exposed. A hydraulic clamper may be used instead of the manual clamper 31.

As described above, according to the work clamp mechanism of the punching machine according to the present invention, even if the size of the work is not specified and the length and width of the work are different, simple adjustment, for example, The work can be fixed by adjusting the position of the intermediate origin setting member and the position of the manual clamper. Not only the hydraulic clamper in the work mounting portion but also the manual clamper capable of adjusting the interval can surely position the drilling position, which is convenient for use.

[Brief description of drawings]

FIG. 1 is a front view of a punching machine having a work clamp mechanism with an intermediate origin according to the present invention, FIG. 2 is a plan view of the punching machine of FIG. 1, and FIG. 3 is a main part of the work clamp mechanism with an intermediate origin. A plan view, FIG. 4 is a front view of a main part of FIG. 3, and FIG. 5 is a plan view of a main part of a work clamp mechanism with a middle origin in a state in which a middle origin setting member and a hydraulic clamper are stored below a work mounting portion. FIG. 6 is a sectional view of a main part of a receiving member showing a structure for fixing the swing rod when it is upright, and FIG. 7 is a plan view of the main part in a state where the work is clamped in the left side region of the work mounting part. The figure shows a side view of the main part when the work is clamped on the pedestal. Fig. 9 is a front view of the main part when the work is clamped on the pedestal. Fig. 10 shows the pedestal fixed to the rotating rail. Fig. 11 is a front view of the essential parts showing FIG. 12 is a plan view of the main part of the work attachment part in a state where the first intermediate origin setting member and the hydraulic clamper are stored, and FIG. 13 is a block diagram showing the drive control of the hydraulic clamper. FIG. 14 is a main part plan view showing a mode of clamping the fourth group of works to the work mounting part, and FIG. 15 is a main part plan view showing a mode of clamping the second group of works to the work mounting part, and FIG. [FIG. 3] is a plan view of relevant parts showing a mode for clamping a workpiece having a maximum shape. DESCRIPTION OF SYMBOLS 1 ... Work mounting part, 2 ... Machine stand 3 ... Frame, 3a ... Horizontal frame 4 ... Support rod 5,18 ... Hydraulic clamper 6 ... Left side origin setting member, 7 ... Right side origin setting member 8 ... 1st side rod, 9 ... 2nd horizontal rod 10, 11 ... Oscillating rod, 12 ... Receiving member 13, 20, 29 ... Set screw 21a ... 1st intermediate origin setting member 21b ... 2nd intermediate origin setting member 22, 22a ... Cradle, 23 ... Rail 24 ... Notch recessed part, 25 ... Rotating rail 31 ... Manual clamper 40a, 40b ... Chip receiving box 53 ... Drill unit, 56 ... Control device 57 ... Switchboard, A, B, C ... Work

Claims (1)

[Scope of utility model registration request] 1. A work mounting part on which a work is placed and which is provided with a clamp mechanism for fixing the work, and a movable table which is provided behind the work mounting part and is movable in parallel with a longitudinal direction. Between the drill unit mounted on the movable table and movable in the direction orthogonal to the moving direction of the movable table, and between the both end plates of the U-shaped frame of the work attachment part, parallel to the moving direction of the movable table. A plurality of pedestals 22 each of which is provided between the rails and a pedestal 22 which is laid between the rails and which receives a work on its upper surface, and a pressing plate 36 which presses the work provided on the pedestal 22. This pressing plate 36
In the punching machine for clamping and clamping the work at a predetermined position of the work mounting portion by the and the pedestal 22, a plurality of hydraulic clampers are arranged at predetermined intervals on the moving base side of the U-shaped frame of the work mounting portion. Along with the rails, a plurality of movable intermediate horizontal rods are arranged in parallel with both side end plates, and the side faces of the work are also attached to the intermediate horizontal rods and the both side end plates of the U-shaped frame of the work attaching part 1. The hydraulic clampers to be gripped are arranged respectively, and the origin setting members for regulating the position of the workpiece side end are respectively arranged on the intermediate horizontal rod and the movable table side of the U-shaped frame of the workpiece mounting portion, so that they can be moved on the rails. A manual clamper slidable along a guide groove of the pedestal 22 is provided at an end of the pedestal 22 provided on the operator side, and the upper surface of the uppermost layer of the work is pressed against the manual clamper, The pedestal 22 is provided with a pressing plate 36 that can move up and down along a screw rod that stands vertically, and the manual clamper is moved along a guide groove of the pedestal 22 to be mounted on the pedestal 22. The peripheral edge of the placed work is brought into contact with the origin setting member on the moving table side and fixed to the hydraulic clamper of the work attaching part to position the work, and the pressing plate 36 of the manual clamper is lowered along the screw rod 38. A work clamp mechanism for a punching machine, characterized in that the work is pressed against the upper surface of the work, and the work is clamped and fixed on the receiving table 22.