JPH07148534A - Device for regulating attaching position of work holder - Google Patents

Abstract

PURPOSE:To obtain a work holder attaching position regulating device which can do both of an automatic regulation of an attaching position and a manual regulation and whose structure is simple. CONSTITUTION:A laterally movable cross slide 10 is installed on a carriage 9 to move front and back, and the carriage is applied to a sheet machine attached with a work holder 12 laterally movable along an attached rail 16 installed on the cross slide 10. A lock device 21 for fixing the position is installed on the work holder 21. Striking members 22a to 22d to engage into the work holder by sinking in and projecting out are installed on the both sides in the moving direction of the work holder 12. Further, a winding driving device 25 to laterally move the work holder 12 with pushing members 27, 28 by driving a belt 29 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting position adjusting device for adjusting a mounting position of a work holder used for feeding a plate material in a plate material processing machine such as a punch press.

[0002]

2. Description of the Related Art A plate material processing machine such as a punch press is provided with a feeding device for holding a plate material placed on a work table by a work holder and moving it to a processing position. This feeding device includes a carriage that moves back and forth, a cross slide that moves left and right on the carriage, and a plurality of work holders mounted on the cross slide.
The work holder is usually fixed to the cross slide with a bolt type manual clamp.When changing the mounting position, the worker loosens the clamp and moves it along the guide, and then retighten the clamp. To do. Such a change in the mounting position of the work holder is necessary in order to grip an appropriate place according to the size of the plate material, or when the place to be processed interferes with the work holder. However, if there are various sizes of plates to be handled, it is very troublesome to manually change the work holder position as described above. Therefore, various devices have been proposed that can automatically change the mounting position of the work holder.

[0003]

However, each of the conventional work holder mounting position adjusting devices capable of automatic adjustment has a complicated structure and cannot be manually adjusted in some cases, resulting in inconvenience in use.

An object of the present invention is to provide a work holder mounting position adjusting device which is capable of both automatic adjustment of a mounting position and manual adjustment and has a simple structure.

[0005]

In this work holder mounting position adjusting device, a cross-movable cross slide is provided on a carriage that moves back and forth, and a work can be moved laterally along a mounting rail provided on the cross slide. It is assumed that the holder is attached. In the above configuration, a lock device for fixing the position of the work holder is provided, and a projecting and retractable contact member that engages with the work holder is provided on both sides in the moving direction of the work holder, and the work holder is horizontally moved by a pressing member. Provide a hanging drive device.

Further, in the work holder mounting position adjusting device having the above structure, a sensor for detecting the relative position between the cross slide and the work holder when the mounting position of the work holder is manually adjusted, and this relative position detection. Based on this, an automatic adjustment device for setting the position adjustment amount of the work holder between the work holder and the contact member may be provided.

[0007]

In the adjustment, the distance between the contact member and the work holder is opened by the movement of the cross slide by the distance to be adjusted. After that, the lock device of the work holder is released, the winding drive device is rotated, and the work holder is pushed and moved by the pushing member until it abuts against the hitting member.
In the adjusted state as described above, the locking member is locked again to sink the contact member, and the contact member is retracted by the winding drive device. Since the pushing member of the winding drive device is normally retracted to a position where it does not engage with the work holder, it is possible to manually adjust the mounting position of the work holder.

When the relative position detecting sensor is provided and the automatic adjusting device is provided, even if the cross slide is manually adjusted in position and the mounting position is unrecognized on the machine side, the mounting position is not recognized. Of the contact member and the work holder can be automatically opened by moving the cross slide by the distance that should be detected and adjusted.
Therefore, both the automatic adjustment of the mounting position and the manual adjustment of the mounting position can be performed well.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 2 is a plan view of a punch press to which this work holder mounting position adjusting device is applied, and FIG. 3 is a side view thereof. The base frame 1 is provided with a work table 2 on which the plate material W is placed, and a feeding device 3 for moving the plate material W back and forth and left and right on the work table 2. A C-shaped frame 1a (FIG. 3) is continuously formed at the rear portion of the base frame 1, and a pair of upper and lower turrets 4 are provided at the throat thereof.
4 is installed, and a punch drive mechanism 5 that drives the ram up and down at the punch position P is provided on the upper portion of the C-shaped frame 1a. Work table 2 is base frame 1
It is composed of a central fixed table 6 which is fixed to the slide table 7, and slide tables 7 and 7 on both sides which move back and forth on a rail 8.

The feeding device 3 has a carriage 9 which is assembled integrally with the slide tables 7 on both sides and moves back and forth (Y-axis direction), and the cross slide 10 is mounted on the carriage 9.
Is installed so that it can be fed laterally (X-axis direction). The carriage 9 is driven back and forth by a feed screw (not shown) provided on the base frame 1. Cross slide 10
Is a product in which two work holders 11 and 12 are mounted side by side, and the feed screw 14 and the ball nut 1 are driven by the servo motor 13 provided on the carriage 9.
5 (FIG. 5), and is moved back and forth in the X-axis direction.

As shown in FIG. 5, a dovetail-shaped mounting rail 16 is integrally provided on the front surface of the cross slide 10, and the work holders 11 and 12 are mounted on the mounting rail 16. Of these, the work holder 11 on the left side of FIG.
Is fixed in position, and the work holder 12 on the right side can be adjusted to the left and right by the mounting position adjusting device A according to the present invention. The position of the work holder 11 on the left side may be changeable along the mounting rail 16 only by manual operation. Each of the work holders 11 and 12 clamps the end of the plate W between the lower fixed jaw 17 and the upper movable jaw 18, and the movable jaw 18 is a clamp cylinder (not shown). It is driven to open and close. The movable work holder 12 is engaged with the mounting rail 16 by means of a dovetail-shaped engaging groove 19 formed on the back surface, and is attached to both sides by a truncated cone-shaped clamp piece 20 on the mounting rail 16. On the other hand, a pair of lock devices 21 that lock the pulling state are attached. The clamp piece 20 of the lock device 21 is driven by the lock cylinder 21a.

Further, as the constituent elements of the mounting position adjusting device A, four contact members 22a to 22d and a belt type winding driving device 25 on the base frame 1 as shown in FIG.
And are provided. Of the four contact members 22a to 22d, the left end contact member 22a is engaged with the left side surface of the work holder 12, and the right three contact members 22b to 22d are engaged with the right side surface of the work holder 12, respectively. Both are cylinders 23a for projecting and retracting installed on the base frame 1.
It is possible to project and retract with respect to the upper surface of the work table 2 by 23d. Right three contact members 22b-22
d is arranged at a pitch of 100 mm in this embodiment.
Further, proximity switches 24a to 24d, which are detection switches of the work holder 12, are provided at front positions in the contact direction with respect to the contact members 22a to 22d.

The winding drive device 25 is used for the work holder 1
A pair of pushing members 27, 2 engaging the safety dog 26
8 is attached to a chain 29 which is an endless rotating body. The chain 29 includes a pair of pulleys 3 separated in the X-axis direction.
The pulleys 30 and 31 are mounted between 0 and 31 and are rotatably supported on the base frame 1 via a support member 32 (FIG. 5) about a horizontal axis. The drive-side pulley 31 is connected to the motor 33 via a torque limiter 34. The fixed table 6 of the work table 2 is provided with a slit-shaped opening 37 (FIG. 1) through which the pressing members 27 and 28 are projected.

The safety dog 26 is provided in the work holder 12
Is a dog for detection of entry that prevents accidental punching when entering the punching position P. When the dog 26 is in a detection state by the detection switch 35 provided on the carriage 9, control is performed. The device stops the punching operation. Further, the carriage 9 is provided with a position detecting sensor 36 for detecting the safety dock 26 or another dog (not shown) provided on the work holder 12, and the X-axis servo when the sensor 36 is turned on. By capturing the detection value of the position detector 13a of the motor 13,
Relative position detecting means 3 for detecting a mounting position (that is, a relative position) of the work holder 12 to the cross slide 10.
8 is provided in the processing machine control device 40.

The processing machine control device 40 is a device for controlling the entire plate material processing machine including a punch press, and is NC / P.
It consists of a C device, that is, a numerical controller and a programmable controller. Based on the relative position detection value of the cross slide 10 and the work holder 12 detected by the relative position detection means 38, the processing machine control device 40 determines the position adjustment amount of the work holder 12 between the contact members 22a to 22d as described later. Further, an automatic adjustment device 39 for automatically setting the movement of the cross slide 10 is provided. In this embodiment, the automatic adjustment means 39 is also provided with a function of determining which of the contact members 22a to 22d to use and automatically selecting them.

The operation of adjusting the mounting position of the work holder 12 having the above structure will be described. First, the cross slide 10 is fed back and forth once from the origin position (the position at the left end in the drawing) to the right end, and the attachment position of the work holder 12 to the cross slide 10 is detected by the sensor 36. The detection of the mounting position by the sensor 36 is obtained from the detection value of the servo motor 13 when the work holder 12 passes as described above.

Next, as shown in FIG. 6A, the contact member 22 is moved by the distance DX required for adjusting the work holder 12.
The positional relationship with c is set by moving the cross slide 10. This figure shows a case where the intermediate hitting member 22c is used. Which of the contact members 22a to 22d is used will be described later.

When the position setting is completed, the contact member 22c
And the lock device 2 for the work holder 12
The lock by 1 is released, and the belt 29 of the winding drive device 25 is rotated. By this rotation, the pushing member 27 of the belt 29 pushes the safety dog 26 of the work holder 12 to move the cross slide 12, and the cross slide 12
Is pressed against the member 22c (FIG. 6 (B)). The pressing force is the torque limiter 34 of the belt drive motor 33.
Limited by. In this pressed state, the work holder 12 is fixed to the mounting rail 16 by the lock device 21, and the mounting position adjustment is completed. The stop of the motor 33 after the pressing is performed after a set time by a timer (not shown) from when the cross slide 12 is detected by the proximity switch 24c before the contact with the contact member 22c.

After the mounting position adjustment is completed in this way, the contact member 22c is sunk, the belt 29 is reversed, and the pushing member 27 is retracted to the position on the side of the sprocket 30.
Since the pushing member 27 is normally retracted below the table surface as described above, and there is no problem of interference with the safety dog 26 of the work holder 12, the lock device 21 of the work holder 12 is prevented.
By releasing, the mounting position of the work holder 12 can be manually adjusted to an arbitrary position.

Next, a method of properly using the plurality of contact members 22a to 22d will be described. The contact member 22a on the left side of the work holder 12 is opposite to the contact member 22a described above.
It is used for the operation to reduce the interval. The three contact members 22b to 22d are provided on the right side for the following two reasons. That is, when the space between the work holders 11 and 12 is narrow, the pushing member 27 of the belt 29 interferes with the safety dog 26 of the fixed work holder 11 only by providing the right end contact member 23d. Further, only by providing the contact member 23b on the left side of the line, it is necessary to repeat the operation many times when the interval between the work holders 12 is widened. These problems are caused by the three contact members 22b-2.
It is solved by using 2d.

FIGS. 7A to 7D show each contact member 22.
The example of use of a-22d is shown. The adjustment distance DX is shown in FIG.
Is 100 mm or less. In this case, the three leftmost contact members 22b arranged in FIG. 1 are used. The contact member 22b is set at a position where the center of the work holder 12 is on the left side of the punch position P by 100 mm when the work holder 12 is in contact. Therefore, when the position of the work holder 12 after movement (after adjusting the mounting position) is Xa, the X-axis command value X0 during movement is X0 = Xa + 100.

FIG. 2B shows the case where the adjustment distance DX exceeds 100 mm and is 200 mm or less. in this case,
The three center contact members 22c of FIG. 1 are used.
The contact member 22c is set at a position where the center of the work holder 12 coincides with the punch position P when the work holder 12 is in contact with the punch member P. Therefore, when the position of the work holder 12 after movement is Xa, the X-axis command value X during movement is set.
0 is X0 = Xa.

FIG. 3C shows the case where the adjustment distance DX exceeds 200 mm and is 300 mm or less. in this case,
The contact member 22d at the right end of FIG. 1 is used. The hitting member 22d is set at a position where the center of the work holder 12 is on the right side of the punch position P by 100 mm when the work holder 12 is in contact. Therefore, when the position of the work holder 12 after movement is Xa, the X-axis command value X0 during movement is X0 = Xa-100. When the adjustment distance DX exceeds 300 mm, the adjustment operations are performed a plurality of times by combining the operations of FIGS. 7A to 7C.

FIG. 3D shows a case where the distance between the work holders 11 and 12 is narrowed and the absolute value of the adjustment distance DX is 300 mm or less. In this case,
The contact member 22a which is separated from the left end of is used. The abutting member 22a is positioned so that the center of the work holder 12 is located closer to the punch position P than the punch position P when the work holder 12 is in contact with the right side.
It is set at a position that is 00 mm to the left. Therefore, when the position of the work holder 12 after movement is Xa, the X-axis command value X0 during movement is X0 = Xa + 200. If the adjustment distance DX exceeds 300 mm in the negative direction, readjustment is performed by the exceeded distance.

In FIGS. 7A to 7D, the adjustment distance D
The setting of X is performed by the control of the automatic adjustment device 39 based on the relative position detection value of the position detection means 38. Further, the determination of which contact member 22b to 22d to select and the selection command are also performed by the control of the automatic adjustment device 39 based on the relative position detection value of the position detection means 38. In this way, the mounting position of the work holder 12 can be automatically adjusted, and also the manual adjustment can be performed as described above. Moreover, the above adjustment can be performed with a simple configuration in which only the hitting members 22a to 22d and the winding driving device 25 are provided. Although the above embodiment has been described with respect to the case of being applied to a punch press, the present invention can be applied to a plate material processing machine generally using a work holder such as a right angle shear and a laser processing machine.

[0026]

The work holder mounting position adjusting device of the present invention is provided with a lock device for fixing the work holder mounted on the mounting rail of the cross slide so as to be laterally movable, and engages with the work holder on both sides in the moving direction of the work holder. In addition to the fitting and collapsible hitting member, a winding drive device that laterally moves the work holder with a pushing member is provided, so that both the automatic adjustment of the mounting position and the manual adjustment can be performed, and the locking device and the hitting member , And a simple structure in which only a winding drive device is provided.

In the case of the invention of claim 2, a sensor for detecting the relative position between the cross slide and the work holder is provided,
In addition, based on the relative position detection, an automatic adjustment device that sets the position adjustment amount of the work holder between the contact member and the contact member is provided, so the machine holder can recognize the attachment position of the work holder as a result of manual adjustment. Even if it is not necessary, the position can be detected later and the mounting position can be automatically adjusted. Therefore, the automatic adjustment and the manual adjustment can be freely used depending on the case.

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of a mounting position adjusting device according to an embodiment of the present invention.

FIG. 2 is a plan view of a plate material processing machine equipped with the attachment position adjusting device.

FIG. 3 is a side view of the plate material processing machine.

FIG. 4 is a front view showing a fixed table portion of the plate material processing machine.

FIG. 5 is an enlarged cutaway side view of the attachment position adjusting device.

FIG. 6 is an explanatory diagram of a work holder mounting position adjusting operation.

FIG. 7 is an explanatory view of a work holder mounting position adjusting operation.

[Explanation of symbols]

1 ... Base frame, 2 ... Work table, 6 ... Fixed table, 7 ... Slide table, 9 ... Carriage, 10
… Cross slide, 11… Work holder on the fixed side, 12
... Workpiece holder on movable side, 16 ... Mounting rail, 20 ... Clamp piece, 21 ... Lock device, 22a-22d ... Contact member, 23a-23d ... Lifting cylinder, 24a-24d
... Proximity switch, 25 ... Winding drive device, 26 ... Safety dog, 27, 28 ... Pushing member, 29 ... Belt, 33 ...
Motor, 34 ... Torque limiter, 36 ... Sensor, 39 ...
Automatic adjustment device, P ... Punch position

Claims (2)

[Claims] 1. A cross slide capable of moving laterally is provided on a carriage that moves back and forth, a work holder is attached so as to move laterally along a mounting rail provided on the cross slide, and a locking device for fixing the position of the work holder. And a wrapping drive device for laterally moving the work holder with a pushing member. 2. A sensor for detecting the relative position between the cross slide and the work holder when the mounting position of the work holder is manually adjusted, and the position adjustment amount of the work holder based on the relative position detection. The work holder mounting position adjusting device according to claim 1, further comprising an automatic adjusting device that is set between the contact member and the contact member.