JPH061288Y2 - Punching machine - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to a punching machine, and more specifically, a work clamp capable of retracting a small amount of a clamp portion when re-holding a work. The present invention relates to a punching machine equipped with a device.

(Prior Art) Conventionally, in the case of perforating a work, for example, a plate, for example, the side edge of the work is brought into contact with a reference surface of a work clamp device, the work is clamped, and the perforation is performed within the carriage movement range. . There is also a type in which a reference surface is provided separately from the work clamp device.

(Problems to be solved by the invention) However, when the work needs to be gripped with a long plate material or the like, the side edge of the work must be a straight line in the longitudinal direction,
When the work clamp device is moved, the reference surface of the work clamp device interferes with the side edge of the work, and there is a problem in that the work cannot be moved to perform accurate drilling work.

Therefore, the present invention was devised in view of the above-mentioned problems, and provided with a work gripping device in which the clamp member of the work clamp device can be retracted by a certain amount, and eliminates interference with the work side edge portion. An object of the present invention is to provide a punching machine capable of moving a work clamp device without moving a work.

[Structure of the Invention] (Means for Solving Problems) In view of the above-mentioned conventional problems, the present invention provides a drilling tool for drilling a work above a work table that supports the work. A punching machine provided with a machining head provided with the work clamp, which is capable of reciprocating in the material feeding direction, having a work clamp capable of gripping the work, and one side edge of the work is vertically moved to the work clamp. A clamp member that can be held from any direction is provided so that it can move up and down.
The work clamp is horizontally reciprocally movable in a direction away from one side edge of the work, and the work clamp is vertically movable with respect to the carriage, and the other side edge side of the work is attached to the work. A material pressing device that can be pressed and fixed to the table is provided on the work table.

(Operation) In the above structure, the work can be transferred in the material feeding direction by repeating the pressing and fixing of the work by the material pressing device and the clamping of the work by the work clamp when the carriage reciprocates in the material feeding direction.

As described above, when the carriage reciprocates, the work clamp does not interfere with the work, and when the work is clamped, it is possible to easily cope with the work even if it has some vertical curvature. During processing, both sides of the work can be fixed with the material holding device and work clamp.

(Embodiment) An embodiment of the present invention will be described below in detail with reference to the drawings.

Referring to FIGS. 7 and 8 and pressing FIG. 9, the punching machine 1
A work table 5 is provided on the base 3 in FIG. Above the work table 5, a plurality of rollers 7 extending in a direction orthogonal to the paper surface in FIG.
However, it is rotatably supported at appropriate intervals in the left-right direction in FIG. 8 via a support member 5A forming a part of the work table 5. Place the work on the roller 7,
It can move in the X direction as indicated by the arrow in FIG.

A gate-shaped column 9 is erected on the base 3, and a processing head 11 is provided on the front part (right side in FIG. 8) of the column 9.

The machining head 11 drives the screw rod 13 by a drive source such as a motor (not shown), is guided by the dovetail groove 15 and is movable in the V-axis direction (left and right direction in FIG. 7), and the motor (not shown). It is configured to be movable in the Z-axis direction (vertical direction in FIG. 7) using the guide plate 17 as a guide by a drive source such as.

Further, a plurality of drilling tools 19 are provided below the processing head 11.
Are mounted in a straight line in the left-right direction as shown in FIG. The drilling tool 19 engages with a threaded rod 23 having a right-hand thread and a left-hand thread, which are distributed from the machine center by a driving device such as a motor 21, and is moved in the Y-axis direction (left-right direction in FIG. 7). Each can be moved in and out freely. The drilling tool 19 is rotatable by a motor 25 via a driving means 27 such as a belt drive.

On one side of the table 5, for example, on the right side in FIG. 7, a work clamp device 29 is provided movably in the material feeding direction, that is, in the direction orthogonal to the paper surface in FIG.

The work clamp device 29 includes a carriage 31 and a plurality of work clamps 33.
Is guided by the drive motor 35 through the drive means of the ball screw 37 to the guide bar 39, and as shown in FIG.
It is configured to be movable in the axial direction (left-right direction).

The plurality of work clamps 33 clamp the side ends of the work, and the carriage 31 moves the work left and right on the roller 7 of the table. The work clamp device 29 can also be gripped by a plurality of work clamps 33 to move a portion of the work to be processed to a processing position.

Further, a vertically movable material pressing device 41 for pressing the work from above is provided on the side of the table 5 opposite to the work clamp device 29 side, on the side of the processing portion on the left side in FIG. The material pressing device 41 presses the work from above at the time of punching, and also holds the work when the work is clamped by the work clamp 33. The material holding device 41 is in an open state when the work is fed by the work clamp device.

With the above configuration, the work is clamped by the work clamp 33 of the work clamp device 29 and the carriage 3
By moving 1 in the material feeding direction, the portion of the workpiece to be processed is positioned at the processing position. That is, the portion of the work to be machined is positioned below the axial center of the drilling tool 19 and the work is held by the material holding device 41. In this state, the drilling tool 19 mounted on the lower portion of the machining head 11 is rotated toward the drilling position and lowered while being rotated, whereby the workpiece is drilled. When the work cannot be positioned at the processing position by one clamp by the work clamp device 29, the work can be grasped by the work clamp 33 several times to handle the work.

The concrete structure of the work clamp device 29 is shown in FIG.
This is shown in FIGS. 5 and 6.

On the work table 5, in order to move the carriage 31 of the work clamp device 29 in the material feeding direction (left and right direction in FIG. 4), a support block 43 is provided on the right side and a motor bracket is provided on the left side in FIG. A drive motor 35 such as a servomotor is supported via 45.

A ball screw 37 as an output shaft of the drive motor 35 is rotatably supported by the support block 43. A nut member 47 is screwed onto the ball screw 37, and the nut member 47 is integrally attached to the left rear end portion of the carriage 31.

On the left side of the work table 5 in FIG. 4, a guide bar 39 extends in a direction orthogonal to the paper surface (left and right direction in FIG. 4) and is supported by bolts or the like.

With the above configuration, when the ball screw 37 is rotated clockwise, for example, by driving the drive motor 35, the carriage 31 is guided by the guide bar 39 to the right in FIG. Will be.

As shown in FIGS. 4 and 6, a plurality of work clamps 33 are supported by a plurality of guide shafts 49 on the lower portion of the front portion of the carriage 31 in a vertical direction so as to be vertically movable. . That is, each work clamp 33 has a guide shaft 4 as shown in FIG.
It is vertically movable in a gap provided between the upper portion of the portion on which 9 is mounted and the carriage 31.

In each work clamp 33, a piston rod 51 is provided extending vertically as shown in FIG. 5, and a spring 53 biased upward is provided in the piston rod 51. It is provided. An oil passage 55 connected to the piston rod 51 is provided in the upper portion of each work clamp 33, and the other end of the oil passage 55 is connected to an external hydraulic supply source. A joint 57 is provided.

A clamp member 59, which is vertically movable as the piston rod 51 moves up and down, is fitted to the piston rod 51 at a substantially middle portion in the upper and lower portions of each work clamp 33 in FIG. Reference numeral 61 indicates a reference surface with which the workpiece abuts.

With the above configuration, the joint 57 can be connected to the external hydraulic power source.
When the pressure oil is supplied to the oil passage 55 through the above, the piston rod 51 is pressed downward in FIG. 5 to move. When the piston rod 51 moves downward, the clamp member 5
9 also moves downward to clamp the material, and each work clamp 33 clamps the material.

When the pressure oil is removed from the oil passage 55, the piston rod 51 and the clamp member 59 return upward due to the urging force of the spring 53, and each work clamp 33 unclamps the material.

As shown in FIG. 4, the plurality of work clamps 33 are attached to a support frame 31F supported on the front end of the carriage 31. The support frame 31F is attached to a main body frame 31A forming the main body of the carriage 31 so as to move up and down in FIG.

A plurality of work gripping devices 63 are provided in the groove formed in a part of the carriage 31 so as to be spaced apart from each other and opposed to each other in the left-right direction at appropriate intervals in FIG. The cylinder 65 of the work gripping device 63 has the carriage 3
It is mounted in the groove formed in 1. The cylinder 6
4, a piston rod 67 vertically extending and vertically movable in FIG. 4, a spring 69 biased upward and a vertically extending parallel to the piston rod 67 and vertically moving the piston rod 67. And a joint 73 for supplying hydraulic pressure. The joint 73 is connected to an external hydraulic power source.

The work gripping and feeding material 63 will be described in more detail.

Referring to FIG. 1, FIG. 2 and FIG. 3, a plurality of cylinders 65 are provided in the groove of the carriage 31, and the cylinders 65 are the main body frame 31A forming the main body of the carriage 31.
It is fixed by bolts 75 or the like.

A guide shaft 71 for supporting the carriage 31 is provided in the cylinder 65 in a direction orthogonal to the paper surface in FIG. 1. One end of the guide shaft 71 is horizontally mounted on the support frame 31F and the other end is horizontally mounted on the carriage 31. Then, the side of the carriage 31 is fixed with a screw 77 or the like. Since the bush 79 loosely fitted to the shaft 71 is fitted to the cylinder 65, the carriage 31 is movable in the left-right direction in FIG.

Further, a piston rod 67 is provided in the cylinder 65 adjacent to the guide shaft 71.
The tip (left side in FIG. 2) is detachably provided on the side surface of the support frame 31F. This piston rod 6
7 is operated by the pressure oil supplied from the external hydraulic pressure supply source through the oil passage 81 provided in the cylinder 65 to the piston rod 6
7 enters the oil passage 83, the oil chamber 85 is filled, and the piston rod 67 moves forward (to the left in FIG. 2).

On the other hand, in the carriage 31, a spring 69 is concentrically opposed to the piston rod 67 and a spring 69 is provided.
7 is built in and provided. The adjusting nut 87 is for adjusting the elastic force of the spring 69, and is fixed with a screw 89 or the like after adjustment.

With the above configuration, the joint 73 can be connected to the external hydraulic power source.
When the pressure oil is supplied to the oil chamber 85 through the oil passages 81 and 83 via the, the piston rod 67 moves slightly to the left in FIG.

As a result, the carriage 31 moves against the repulsive force of the spring 69, the work clamp 33 is pressed downward in FIG. 4 via the support frame 31F, and the work clamp 33 moves a little and moves to the reference surface 61 of the work clamp 33. The side edge portions of the abut on each other and are positioned. After that, the work clamp 33 clamps the work by the above-described clamp operation.

When the work clamp 33 is unclamped from the work and the pressure oil is removed from the inside of the cylinder 65, the piston rod 67 retracts due to the elastic force of the spring 69.
By retreating the piston rod 67, the support frame 3
The work clamp 33 moves a little upward in FIG. 4 via 1F, and the reference surface 61 moves away from the side edge of the work.
In this state, the carriage 31 is moved in the material feeding direction, stopped at a predetermined position, and this operation is repeated, so that the work can be grasped.

As described above, since the reference surface 61 can be slightly retracted when the work is not fed, the work is not moved without interfering with the work while the work clamp 33 is moving in the feeding direction.

Further, FIGS. 10 to 13 show another embodiment of the gripping device.

The gripping device 63 shown in FIGS. 10 and 11 is a mechanism for advancing and retracting the entire work clamp device 29 with a cylinder 91 or the like, and a slidable slide guide 93 is provided on the work table 5. A work clamp device 29 is provided on the slide guide 93. The operation is to move the cylinder 91 in the left-right direction in FIG. 11 to slide between the work table 5 and the slide guide 93 to move the work clamp 33 forward and backward.

The gripping device 63 shown in FIGS. 12 and 13 has a support frame 31F of the carriage 31 on which the piston rod 9 is attached.
5, the work clamp 33 guided by the plurality of guide shafts 97 is moved forward and backward by hydraulically operating the piston rod 95. Reference numeral 99 indicates the LM.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention, and the operation of the machine may be manual, or the hydraulic pressure may be changed to pneumatic pressure. Of course, magnetic force or the like may be adopted.

[Effects of the Invention] As will be understood from the above description of the embodiments, the present invention is, in short, a drilling tool 19 for drilling the above-mentioned work at a position above the work table 5 supporting the work.
Is provided, and a carriage 31 provided with a work clamp 33 capable of gripping the work is provided so as to be reciprocally movable in the material feeding direction. A clamp member 59 that can hold one side edge from the up and down direction is provided so as to be vertically movable, and the work clamp 33 is provided so as to be horizontally reciprocally movable in a direction away from the one side edge of the work and to the carriage 31. On the other hand, the work clamp 33 is provided so as to be vertically movable, and the work table 5 is provided with a material pressing device 41 that is capable of pressing and fixing the other side edge of the work to the work table 5.

As is apparent from the above configuration, in the present invention, the work clamp 33 provided on the carriage 31 that is reciprocally movable in the material feeding direction is capable of vertically moving a clamp member 59 that is capable of holding one side edge of the work vertically. In addition, the work clamp 33 itself is provided so as to reciprocate and move up and down in the horizontal direction toward and away from one side edge of the work. Further, there is provided a material pressing device 41 capable of pressing and fixing the other side edge of the work to the work table 5.

Therefore, according to the present invention, by repeating the reciprocating movement of the carriage 31 and the clamping of the workpiece by the workpiece clamp 33, the workpiece can be transferred in the material feeding direction, and the workpiece may be a long material. Can be easily dealt with.

As described above, when the reciprocating motion of the carriage 31 and the clamping of one side edge of the work by the work clamp 33 are repeated, the work clamp 33 itself is provided so as to be able to move toward and away from the work and to be vertically movable. The work clamp 33 does not rub the work at the time of returning to the work, and when the work is clamped by the clamp member 59, the work clamp 33 moves up and down, so that Even if there is a vertical bending, it can be easily dealt with.

Further, when the work is machined, both sides of the work are pressed against the work table 5 by the work clamp 33 and the material pressing device 41, and even when the work has some bending in the vertical direction, the above-mentioned bending is suppressed. Since the processing is performed, the processing accuracy is improved.

[Brief description of drawings]

1 to 3 show an embodiment of a work gripping device according to the present invention. FIG. 1 is a partial side view taken along the line II of FIG. 4, and FIG. 2 is FIG. A sectional view taken along line II-II of
FIG. 3 is a sectional view taken along line III-III in FIG. 4 to 6 show an embodiment of the work clamp device according to the present invention. FIG. 4 is an enlarged plan view of the IV arrow part in FIG. 9, and FIG. 5 is VV of FIG. Cross-section along the line,
FIG. 6 is a sectional view taken along line VI-VI in FIG. 7 to 9 show an embodiment of a punching machine embodying the present invention. FIG. 7 is a front view, FIG. 8 is a left side view of FIG. 7, and FIG. 9 is of FIG. It is a top view. 10 to 13 show another embodiment of the work gripping device according to the present invention, and FIGS. 10 and 11 show the second embodiment.
FIG. 10 is a plan view and FIG. 11 is a side view showing an embodiment. 12 and 13 show the third embodiment, FIG. 12 is a plan view, and FIG. 13 is a side view. [Explanation of Codes Representing Main Parts of Drawing] 1 ... Drilling machine 11 ... Processing head 19 ... Drilling tool 29 ... Work clamp device 63 ... Work gripping device

Claims (1)

[Scope of utility model registration request] 1. A perforating tool (1) for perforating a work above a work table (5) supporting the work.
A drilling machine comprising a machining head (11) provided with 9), and a carriage (31) provided with a work clamp (33) capable of gripping the above-mentioned work in a reciprocating manner in the material feeding direction. The work clamp (33) is provided with a clamping member (5) capable of holding one side edge of the work vertically.
9) is provided so that it can move up and down, and the work clamp (33) is provided.
Is provided so as to be horizontally reciprocally movable in a direction away from one side edge of the work, and the work clamp (33) is provided so as to be vertically movable with respect to the carriage (31), and the other side edge side of the work is provided. A material punching device (41) which can be pressed and fixed to the work table (5) is provided on the work table (5).