JPS5945449B2 - punch press machine - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an automatically controlled punch press machine. However, positioning on the other axis, that is, the direction perpendicular to the direction of movement of the workpiece, is performed by moving the mold holder and the hammer mechanism that drives the mold. 2.

[Prior art]

In conventional punch press machines, the die that performs processing and the hammer mechanism that drives the die are installed at fixed positions on the punch press machine, so it is possible to perform processing at various positions on the workpiece. To do this, the workpiece is moved in a rectangular coordinate system of two axes: It was a method that processed the workpiece material.

Therefore, the positioning of the workpiece 3 has been performed using two moving positioning devices: a moving positioning device in the X-axis direction and a moving positioning device in the Y-axis direction. In order to transport long and heavy workpieces such as rolls to the processing position without deformation using the punch press machine of the above type, it is necessary to place the workpieces on X-axis and Y-axis moving positioning devices. It becomes necessary.

Therefore, the X-axis and Y-axis moving and positioning devices are used for large workpieces. In order to support this, it becomes a rigid structure, and each moving positioning device becomes large and heavy. Therefore, the force acting on each moving positioning device is the enormous weight of the workpiece and the large weight of each moving positioning device itself, so the control drive source that drives them becomes extremely large, and the current With the control drive source, the normal workpiece feed rate (10 mV
min6 or more) and normal machining accuracy (±0.151
11 or less) is impossible to realize, it has been common technical knowledge to cut the workpiece into a workable size and perform the processing. However, if the dimensions of the workpiece become larger, even if
Even when processing by cutting, the workpiece is distorted or warped during positioning, making it impossible to perform precise processing at high speed. [Summary of the invention]
2 This invention was made in order to eliminate the above-mentioned drawbacks, and is a breakthrough from conventional technical common sense.

In other words, the X-axis and Y-axis two-axis control positioning system necessary for machining any position on the workpiece, one axis for positioning the workpiece, the mold for machining, and the hammer that drives the second mold. It has a structure in which each axis is separated to move the mechanical parts, and multiple pairs of molds are prepared so that the required mold can be easily used by command signals from the control device. . The present invention will be explained below based on the drawings.
[Embodiment of the Invention] FIGS. 1, 2, and 3 are a front view, a side view, and a top view of an embodiment of the present invention.

In these figures, 1 is a base, and a straight first rail 2 is fixed to this base 1. -Le 2
A movable base 3 is attached to the movable base 3, which slides back and forth on the base.
A rack 4 and a clamper 5 for holding a workpiece W are attached to the movable table 3. Further, a pedestal motor 6 is fixed to the base 1, and a gear 7 that meshes with the rack 4 is attached to its shaft. Furthermore, a support stand 8 that supports the weight of the workpiece W is fixed to the base 1, and the upper surface of this support stand 8 supports the weight of the workpiece W.
A rotating body 9 is attached to move the body smoothly. Further, a frame 10 is integrally provided on the base 1, and a linear second rail 11 is fixed to the side surface of the frame 10, and an upper metal plate that slides back and forth on the second rail 11 is fixed to the side surface of the frame 10. A mold holding stand 12 is attached.

This upper mold holder 12 has a lower mold holder 13 and a rack 1.
4 can be attached. Further, a control motor 15 is attached to the frame 10, and a gear 16 that meshes with the rack 14 is attached to the shaft of the control motor 15. Upper and lower mold holding stands 12
, 13 are respectively attached with punches 17, 17a, 17b and dies 18, 18a, 18b, and process the workpiece W located between them. Reference numeral 19 denotes a hammer mechanism, which is slidably mounted using the frame 10 as a guide, and is driven by a known drive source such as hydraulic pressure or a motor.

A linear third rail 20 is fixed to this hammer mechanism section 19 . Furthermore, a rack 21 is attached to this third rail 20. The frame 10 has a control motor 2
2 is attached to the shaft, and a gear 23 that meshes with the rack 21 is attached to the shaft. 24 is a guide tube, and a slider 25 moves up and down inside the guide tube to hit the head of the punch 17a or 17b.

Next, the operation will be explained.

The workpiece w is held in a clamper 5 attached to a movable table 3 that is stopped at a predetermined position on the base 1, and when a processing start signal is sent to a control device (not shown, for example, an NC control device), the control starts. A predetermined amount of command signals are sent from the device to the control motors 6, 15, 22, and the control motors 6, 15, 22 rotate. The rotation of the control motors 6, 15, 22 is controlled by the gears 7, 16,
23 and racks 4, 14, and 21, linear motion, i.e.,
This is changed into a movement in the longitudinal direction of the workpiece W, and moves the movable base 3, the upper mold holding base 12 and other members attached thereto, and the hammer mechanism section 19 and other members attached thereto, respectively.

The first rail 2 on which the movable table 3 slides and the upper mold holding table 1
the second rail 11 and the hammer mechanism section 19 that guide the
The third rail 20 that guides the is fixed to the base 1 and the frame 10 in a positional relationship perpendicular to each other. Workpiece W being held and moving on the support table 8
The upper mold holder 12 guided by the second rail 11 and the hammer mechanism part 19 guided by the third rail 20 move perpendicularly to each other (X-axis, Y-axis). With this operation, the punch 17a and the die 18a are placed at the commanded position on the workpiece W.
and slider 25 (FIG. 2). When the punch 17a, die 18a, and slider 25 are set at predetermined positions on the workpiece W, a punch command is sent from the control device to the hammer mechanism 19, and the slider 25 descends, hitting the head of the punch 17a and lowering it. Punch 17a and die 18a
The workpiece W between the two is machined. After that, slider 25
moves upward, and when the slider 25 starts rising, the punch 17a also rises, and both the punch 17a and the slider 25 return to their original positions, completing one cycle of work. In the next cycle, a command signal for setting the punch 17b and the die 18b at predetermined positions on the workpiece W is sent from the control device to the control motor 6,
15, 22, the control motors 6, 15, 22 rotate to drive each part in the same way as described above, and punch 17b to a predetermined position.
, the die 18b and the slider 25 are set.

This state is shown in FIG. A punch command is sent from the control device to the hammer mechanism section 19, and the workpiece W is machined in the same manner as described above.

The above operations are repeated to progress the machining. When the machining of the workpiece W within the range that can be processed is completed, a preparatory operation for sending the workpiece W in the advancing direction is performed. In this operation, when the workpiece fixing device (not shown) operates to fix the workpiece W, the clamper 5 opens and releases the hold on the workpiece W. next,
The movable platform 3 moves from the right end to the left end in FIG.
When the clamper 5 closes again and holds the workpiece W, the workpiece fixing device releases the fixation of the workpiece W. This completes the feeding operation of the workpiece W in the advancing direction. Thereafter, the processing operations described above are performed. In the above embodiment, the upper mold holder 12 and the lower mold holder 13 are integrally driven by the control motor 15, but it is also possible to drive them by separate control motors.

Moreover, either analog control or digital control may be used as the method of the control device. Furthermore, which of the plurality of pairs of molds to use may be selected by a command from the control device, and the order is not limited to the above-mentioned order, and the number of molds can be set as appropriate. In addition, the hammer mechanism 19 can be of a pressing type as well as a hitting type. [Effects of the Invention] As described above in detail, the present invention has a configuration in which a long workpiece is moved and positioned only in the longitudinal direction, and therefore has the following advantages.

1. When a long workpiece is moved using a two-axis drive as in a conventional press machine, vibration and deformation occur in the workpiece itself, making it extremely difficult to perform accurate machining. Since it is only necessary to move the long workpiece in the longitudinal direction, if the workpiece is moved in the strong direction, there will be no movement that would cause the workpiece to twist or warp, allowing stable movement.
Can perform highly accurate machining.

2 For the reason mentioned in 1 above, these workpieces are processed at high speed (501
It is possible to perform fast machining with a high processing repetition rate (360 times/min or more).

3-coil-shaped heavy workpiece (1~10t0n)
Even if the workpiece requires an uncoiler, the movement is only in the long axis direction, so the workpiece itself does not need to support the weight of the coiled material or the weight of the uncoiler, making it easy to feed the material. Good material guidance can be used with a small force, and high-speed and accurate processing is possible even with an uncoiler.

4 Even if the processing requires many steps,
Since processing can proceed with the product suspended until the final stage of processing, the product transport device becomes extremely simple.

5. Easy positioning of the product relative to the workpieces used in each process, allowing for highly accurate processing.

The six-hammer mechanism only needs to be tapped on the head of the punch, and high positioning accuracy is not required, and multiple pairs of upper and lower molds can be easily selected and used.

[Brief explanation of drawings]

Figures 1, 2, and 3 are front, side, and top views showing one embodiment of the present invention, and Figure 4 is a side view when a mold different from that in Figure 2 is specified. . In the figure, 1 is the base, 2 is the first rail, 3 is the carriage platform, 4 is the rack, 5 is the clamper, 6 is the control motor, 7 is the gear, 8
1 is a support stand, 9 is a rotating body, 10 is a frame, 11 is a second rail, 12 is an upper mold holder, 13 is a lower mold holder, 1
4 is a rack, 15 is a control motor, 16 is a gear, 17a,
17b is a punch, 18a and 18b are dies, 19 is a hammer mechanism, 20 is a third rail, 21 is a rack, 22 is a control motor, 23 is a gear, 24 is a guide tube, 25 is a slider, and W is a workpiece. It is.

Claims (1)

[Claims] 1. A linear first rail provided on the base and extending in the longitudinal direction of the long workpiece; and a movable platform that engages with the first rail and moves along the first rail. a clamper attached to the movable base that opens and closes in response to a command signal to securely hold the workpiece on the movable base; a clamper that opens and closes in response to a command signal and is attached to the movable base; a first moving positioning device for moving and positioning to a predetermined position; a frame disposed above the movable base at a distance from the movable base; a frame fixed to the frame so as to be perpendicular to the first rail; a linear second rail; a plurality of pairs that move parallel to the second rail and punch out the workpiece from above and below the workpiece held by the clamper; an upper mold and a lower mold; an upper mold holder and a lower mold holder that hold the upper mold and the lower mold and move along the second rail; a third rail fixed to the frame parallel to the rail; a hammer mechanism that moves along the third rail and hits a desired upper mold among the plurality of upper molds; a command signal; In response to this, the upper mold holder and the lower mold holder are moved to predetermined positions on the second rail, and a desired upper mold is selected from the plurality of pairs of upper and lower molds. and a second moving positioning device for positioning the lower mold so that it is placed at a predetermined position; for moving the hammer mechanism to a predetermined position on the third rail in response to a command signal; a third movable positioning device that positions the mold at a striking position; a command signal is sent to the clamper, the first, second, and third movable positioning devices to move the workpiece along the first rail; A punch press machine equipped with a control device that performs continuous punching while moving the punch press.