JP6547102B2 - Press processing equipment - Google Patents

Description

  The present invention arranges a work between one processing tool and the other processing tool in the first pressure part and the second pressure part, which move relative to each other in the pressure direction, and precisely aligns and presses the work. The present invention relates to a press processing apparatus.

  The method of precisely aligning and pressing a plate-like work with a pair of processing tools is a very common processing method, and is widely used for processing various products. In this processing method, processing is carried out to generate various shapes by pressing a material to be processed by using a mold consisting of a male and female pair. For this purpose, technological development relating to processing devices and molds is widely performed, and many inventions have been proposed.

There is also a large spread of products targeted by press processing technology, but among them, there is a high need for processing of fine products. In particular, research is being conducted to manufacture MEMS (Micro Electro-Mechanical Systems) products such as ink jet printer heads by pressing. In addition, in addition to the reduction in size and weight of automobile parts and home appliances, the spread of fine parts and precision parts is increasing.
For these parts, where the processing dimensions are small, less than 1 mm is typical, and products that cut 0.1 mm are also becoming more common. The plate material to be used is usually 0.1 mm or less, and the use of a thin film of 0.01 mm is also increasing.

High-precision machining of male and female molds is important in press processing using molds, but in addition, it is necessary to improve the precision when combining male and female molds. In particular, the relationship between the die clearance and the plate thickness is important, and in the machined portion, the accuracy less than the plate thickness and the accuracy less than 10% of the plate thickness are usually required. Taking a thin plate material having a thickness of 0.01 mm as an example, 10% thereof is 0.001 mm, that is, a dimensional accuracy of less than 1 μm is required.
However, with regard to the processing of molds currently used, the accuracy can be guaranteed for 1 micrometer, but for less than that, it is not yet sufficient and the situation is low in reproducibility.

  In order to realize advanced press processing, it is necessary to improve the relative position accuracy of the combination, as well as to improve the machining accuracy of the male and female molds, but in the existing technology, the grinding adjustment by a skilled worker is common, and the reproducibility is It can not be said that it is not accurate enough. Furthermore, since adjustment of the mold is basically disassembled and reassembled once, adjustment exceeding the accuracy tolerance of each part is impossible.

As an apparatus for precisely aligning and pressing a plate-like work with a pair of processing tools, for example, the following Patent Documents 1 and 2 are known.
In patent document 1, the press apparatus which press-processes a film-form press target object with upper and lower metal mold | dies is proposed.
In this press device, upper and lower molds are supported by the moving device, and alignment between the press object and the upper and lower molds is performed by observing and aligning the alignment mark of the press object with the imaging device. Is done. Then, the lower surface of the object to be pressed is vacuum-adsorbed and fixed by the adsorption holding devices provided on the upstream side and the downstream side, and the pressing is performed by the upper and lower molds.

  However, in a pressing apparatus like Patent Document 1, the purpose is to precisely adjust the processing target position, and the pair of molds is moved as a pair. Therefore, processing errors and processing defects can not be corrected when misalignment occurs between the upper and lower dies. In order to precisely align the positions of the upper and lower molds, it is necessary to configure each of the parts constituting the elevating mechanism and the guide mechanism of the upper and lower molds supported by the moving device with high accuracy. The device of Patent Document 1 does not include a mechanism for individually adjusting the male and female molds, and the tolerance limit can not be exceeded.

Patent Document 2 proposes a micro-hole press machine for forming a large number of micro holes by aligning with a thin plate with a 1-pin die and a punch with a predetermined high accuracy.
Here, the thin plate-like work is arranged to cover the large window of the work stand, and the thin plate-like work is fixed by fitting the mounting jig into the hole, and the hole of the die and the tip end face of the punch become concentric. As described above, the position is adjusted by the fine movement device, and a number of small holes are machined while moving the work stand in the direction of two horizontal axes.

In this patent document 2, in order to drill a large number of holes using a pair of die punches, in addition to a mechanism for moving the die punch, a mechanism for adjusting the punch position while checking the die hole image is provided.
However, since this mechanism can not punch unless the punch and the die are aligned when drilling a large number of holes, it only adjusts its position, and the relative position adjustment accuracy is as large as ± 0.003 mm.
Furthermore, in this patent document 2, since a mounting jig is fitted and fixed to the hole of a thin-plate shaped workpiece | work, it is easy to produce distortion in a thin-plate shaped workpiece | work.

Unexamined-Japanese-Patent No. 2004-268175 JP 2002-254121 A

  Therefore, it is an object of the present invention to provide a durable pressing apparatus which can easily perform precise position adjustment.

The inventors of the present invention diligently studied to improve the quality of products by improving the processing accuracy of precision pressed parts, aiming to realize fine products.
The precision improvement of precision parts is required to improve the precision of molds. With regard to machining accuracy and assembly accuracy of each part, it is required to improve the accuracy at the time of each processing, but in this case it is necessary to considerably improve the accuracy of all the parts, and at present there is no solution. Therefore, after the accuracy within the tolerance was obtained until the time of assembly, the accuracy was improved with respect to the combined position accuracy which is insufficient in accuracy.
As a result, the processing accuracy of the pressed product can be improved, the realization of a fine product can be achieved, and the quality of the product can be further improved, resulting in the present invention.

A pressing apparatus according to the present invention for achieving the above object comprises a first pressing unit and a second pressing unit that move relative to each other in the pressing direction, and one processing tool and the other processing tool mounted on each pressing unit. And a processing apparatus for processing a workpiece between one processing tool and the other processing tool, wherein at least one of the first and second pressure parts is fixed to the base and the base And a hollow support portion for supporting a load from the other of the first and second pressure portions at the time of processing and a hollow portion of the support portion which is mounted on the base and intersects one processing tool with the pressure direction The position adjustment portion that can adjust the position in the direction, and the support portion through hole provided in the support portion in the pressing direction, and one processing tool supported by the position adjustment portion penetrates the support portion of the support portion Inside the hole, a gap that can be adjusted by the position adjustment unit is provided .

In these pressing devices, the position of one working tool can be adjusted in the range of the gap between the one working tool and the opening.
The position adjusting unit has a first adjusting member and a second adjusting member, each of which is a precision driving mechanism capable of adjusting positions in different directions from each other. The first adjusting member is supported by the second adjusting member. The processing tool of may be supported.

  In these pressing devices, the support portion includes the stripper mounted so as to be movable in the pressing direction on the other base of the first and second pressing portions, and the stripper through hole provided in the pressing direction of the stripper The other processing tool should be placed on the In that case, a processing end support portion may be provided on the pressing portion side of one of the first and second pressing portions in the stripper through hole to support the processing end side of the other processing tool so as to be able to advance and retract.

  In these pressing devices, a drive unit for operating the position adjustment unit, a control unit for controlling the drive unit, and a detection unit for detecting the displacement of one processing tool are provided, and the control unit is set in advance. The feedback control can be performed using the input value to the drive unit and the detection value of the detection unit.

These stamping device, it is preferable hand of the processing tool is supported by being positioned adjusted to the pressure direction in the support part through hole. At least one processing tool may be provided with a detection unit that detects the pressure in the pressing direction, and a shift in relative position between one processing tool and the other processing tool may be determined based on the detection value of the detection unit.

  In these press working devices, a work supply unit for sequentially feeding the wound strip-like work between the first pressure unit and the second pressure unit, a work recovery unit for sequentially winding the processed work, The first and second pressure parts and the one and the other processing tools are disposed in the storage container maintained within a predetermined temperature range, and the work supply part and the work recovery part are disposed outside. It is suitable.

  According to the pressing apparatus of the present invention, at least one of the first pressing unit and the second pressing unit relatively moving in the pressing direction is provided with the position adjusting unit, and the processing tool is supported by the position adjusting unit. Therefore, when adjusting the relative position between the processing tools, it is not necessary to displace the entire pressing unit to adjust the position of the pressing unit, and it is sufficient to displace only the processing tool by the position adjustment unit. . Therefore, precise position adjustment can be easily performed.

In addition, since the position adjusting unit for supporting the processing tool so as to adjust the position of the processing tool is disposed in the hollow portion of the supporting unit for supporting the other load at the time of processing, and the position adjusting unit is mounted on the base, When processing a workpiece with the other processing tool, only a load for processing the workpiece can be applied to the position adjustment unit, and another load can be applied to the support. Therefore, even when the processing tool is supported by the position adjustment unit, it is possible to prevent an excessive load from being applied to the position adjustment unit, and to prevent deterioration or damage of the position adjustment unit capable of precise adjustment.
Therefore, precise position adjustment can be easily performed, and a durable pressing device can be provided.

It is a schematic side view of the press processing apparatus concerning a 1st embodiment of the present invention. It is sectional drawing of the pressurizing part and the processing tool of the press processing apparatus which concern on 1st Embodiment of this invention. It is an exploded perspective view of a pressurization part and a processing tool of a press processing device concerning a 1st embodiment of the present invention. It is sectional drawing which expands and shows the processing tool of the press processing apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the control system of the position adjustment part of the press processing apparatus which concerns on 1st Embodiment of this invention. (A)-(d) is a figure explaining operation | movement of the press processing apparatus which concerns on 1st Embodiment of this invention. (A) And (b) is a partial expanded sectional view explaining the detection part of the press processing apparatus which concerns on 2nd Embodiment. It is a block diagram which shows the control system in the position adjustment part of the press processing apparatus which concerns on 2nd Embodiment of this invention. It is a partial expanded sectional view which shows the position adjustment part of the press processing apparatus which concerns on 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First Embodiment
This embodiment will be described using an example of a pressing apparatus that performs fine drilling on a strip-like workpiece W using a punch and a die.
[overall structure]
As shown in FIG. 1, the press processing apparatus 10 sequentially supplies a work supply unit 11 for supplying a wound strip-like work W, a processing unit 12 for processing the supplied work W, and the work W after processing. And a work collection unit 13 to be taken up.

[Work supply unit and work collection unit]
The workpiece supply unit 11 and the workpiece recovery unit 13 are configured to wind the belt-like workpiece W on a reel, respectively, but detailed illustration is omitted. Here, the strip-shaped workpiece W is intermittently drawn and wound by a predetermined length.
Further, a predetermined tension can be loaded on the workpiece W disposed in the processing unit 12 by one or both of the workpiece supply unit 11 and the workpiece recovery unit 13.

[process section]
The processing unit 12 includes a first pressing unit 14 and a second pressing unit 15, which move relative to each other in the pressing direction, and a first processing tool 16 and a second processing tool 17 mounted on the pressing units 14 and 15, respectively. , And disposed in the storage container 18. The first and second pressure parts 14 and 15 are provided with first and second support parts 21 and 22 which are disposed to face each other so as to sandwich the work W at the time of processing. The workpiece W can be processed with the second processing tool 17.

[First pressure unit]
As shown in FIGS. 2 and 3, the first pressing unit 14 is fixed to a die set 24 as a first base fixed to a stand (not shown) and fixed to the die set 24 so that the second pressing unit is processed. And a position adjustment unit 26 disposed in the hollow portion 25 of the first support portion 21 and attached to the die set 24.

  The first support portion 21 is formed in a substantially cylindrical shape and includes a first backing plate 27 having a longitudinal wall forming a hollow portion 25 and a die plate having a lateral wall fixed to the upper end portion of the first backing plate 27. It has 28 and.

The die plate 28 is provided with a flat first workpiece contact surface 28a that abuts against the workpiece W on the upper surface, and a die of the first processing tool 16 is provided at an intermediate portion within the first workpiece contact surface 28a. A die through hole 28 b penetrating in the pressing direction is provided to arrange the second electrode 32. Further, in order to accurately guide a guide rod 37 of a stripper plate 36 described later, a linear guide 29 such as a linear ball guide or the like is penetrated in the periphery in the pressing direction.
The die plate 28 is formed to be thick and its periphery is firmly fixed to the first backing plate 27 so that displacement and deformation do not occur during processing.

[Position adjustment unit]
As shown in FIGS. 2 and 3, the position adjustment unit 26 of the first pressing unit 14 is disposed in the hollow portion 25 of the first support unit 21, and the die set 24 is separated from the first support unit 21. It is attached in the state. The position adjustment unit 26 includes a first adjustment member 26 a and a second adjustment member 26 b that can be adjusted in directions different from each other. The second adjusting member 26b is mounted on the die set 24, the first adjusting member 26a is supported by the second adjusting member 26b, and the first processing tool 16 is supported by the first adjusting member 26a.

  The first processing tool 16 is movable in the direction intersecting the pressing direction, for example, in the XY direction parallel to the first workpiece contact surface 28 a of the die plate 28 by stacking the plurality of adjustment members 26 a and 26 b. . If necessary, for example, another adjustment member may be stacked to be movable in the rotational direction.

  The position adjusting unit 26 uses a unit that can adjust the position by 1 μm or less in the direction intersecting the pressing direction. Although not particularly limited, as the first adjustment member 26a and the second adjustment member 26b, an expansion and contraction drive unit formed of a precision drive mechanism such as a piezo element is used.

[First processing tool]
As shown in FIGS. 2 and 3, the first processing tool 16 is pressed against the die support jig 31 fixed to and supported by the first adjustment member 26 a of the position adjustment unit 26 and the die support jig 31. The height of the die 32 which is accommodated in the die through hole 28b provided penetrating therethrough and which is displaceable in the pressing direction, and the height which is accommodated in the die through hole 28b and is disposed between the die 32 and the position adjustment portion 26 The adjustment material 33 is provided.

  A die recess 28c is provided on the hollow portion 25 side of the first pressing unit 14 in the die plate 28. In the die recess 28c, the upper side of the die support jig 31 provides a gap for position adjustment around the periphery. Are arranged.

Further, the processing end side of the die 32 disposed on the workpiece W is disposed with a gap for position adjustment inside the die through hole 28 b opened in the first workpiece contact surface 28 a of the die plate 28. .
Further, by precisely adjusting the height of the height adjusting member 33, the processing end to be the work side end of the die 32 is disposed in the vicinity of the first work contact surface 28a, preferably at substantially the same height position It is done.

  The first processing tool 16 is supported by the position adjustment unit 26 so that the position adjustment is performed within the range of the maximum tolerance of at least the first pressing unit 14 and the second pressing unit 15 in the direction intersecting the pressing direction. It is possible. Here, the first processing tool 16 may be positionally adjustable over the entire range of the gap between the first processing tool 16 and the opening 28 d of the die through hole 28 b.

[Second pressure unit]
As shown in FIGS. 2 and 3, the second pressure unit 15 is connected to a pressure drive unit 23 formed of a servomotor or the like fixed to a pedestal (not shown) and the pressure drive unit 23 with a free shank structure. A second backing plate 35 as a second base, and a second support 22 connected to the second backing plate 35 for holding the workpiece W with the first support 21 are provided.

  The second support 22 includes a punch plate 38 fixed to the second backing plate 35 and a stripper plate 36 connected to the punch plate 38 so as to be relatively displaceable.

  A second processing tool 17 is disposed in the vicinity of the center of the punch plate 38, and a linear guide 42 such as a linear ball guide or the like pressurizes the guide rod 37 of the stripper plate 36 described later precisely. A connecting portion 43 is provided which penetrates in the direction and further connects the stripper plate 36.

In the connecting portion 43, the stripper plate 36 is connected by arranging a collar 44 longer than the thickness of the punch plate 38 and fastening the punch plate 38 and the stripper plate 36 with a fastener. Thereby, the difference between the thickness of the punch plate 38 and the length of the collar 44, the stripper plate 36 is movable in the pressing direction. This distance is set to be longer than the thickness of the work W.
Further, the stripper plate 36 is pressed to the side away from the punch plate 38 by the biasing force of the compression spring provided around the collar 44.

  The stripper plate 36 has a flat second workpiece contact surface 36a that abuts against the workpiece W on the lower surface, and a punch through hole 36b to be described later is provided in the middle part of the second workpiece contact surface 36a. A guide rod arrangement portion 36c is disposed around the periphery thereof for arranging the guide rod 37 precisely in the pressure direction.

[Second processing tool]
As shown in FIG. 4, the second processing tool 17 includes a punch support jig 41 locked to the punch plate 38 and a punch 39 supported by the punch support jig 41. The punch support jig 41 is provided with a punch support hole so that the diameter of the workpiece W is reduced by penetrating in the pressing direction, and the punch 39 formed with the diameter reduced at the processing end side is formed in the punch support hole. It is accommodated and supported displaceably in the pressure direction.

  A punch recess 38 a and a punch through hole 38 b are provided in the punch plate 38 so as to penetrate in the pressing direction, and the punch support jig 41 is engaged with the punch through hole 38 b of the punch plate 38. The pressing portion 46 and the load sensor 47 are disposed in the punch recess 38 a, and by arranging these between the second backing plate 35 and the punch 39, the pressing force from the second backing plate 35 is punched. 39 is supposed to be loaded.

  In the stripper plate 36, a punch through hole 36b penetrates in the pressing direction and is provided coaxially with the punch through hole 38b. A processing end support 45 is fixed to the punch through hole 36 b of the stripper plate 36 so as to support the processing end side of the punch 39 so as to be movable back and forth in the pressure direction. The processing end support 45 is fixed to the end of the punch through hole 36 b on the side of the first pressing part 14, and the end face has substantially the same height as the second work contact surface 36 a of the stripper plate 36. . The machined end supporting portion 45 is formed in a tapered hole shape so as to decrease in diameter toward the workpiece side, and the machined end side of the punch 39 formed finely is accommodated.

  The processing end of the punch 39 is inserted into the die 32 so as to protrude from the processing end support 45 when the stripper plate 36 abuts against the work W and is relatively displaced toward the punch plate 38 against the pressure force of the compression spring 54. . On the other hand, when the punch plate 38 and the stripper plate 36 are displaced relative to each other, the processed end of the punch 39 is adjusted to be accommodated in the tapered hole of the processed end support 45.

[Position control system]
The position control system for aligning the relative position between the die 32 of the first processing unit 12 and the punch of the second processing unit 12 in the press processing apparatus 10 is constructed with an accuracy of 1 μm or less. In this position control system, as shown in FIG. 2, the adjustment drive unit 51 that operates the first position adjustment unit 26, the control unit 52 that controls the adjustment drive unit 51, and the displacement of the first processing tool 16 are detected. And a position detection unit such as a position sensor 53 or a load sensor 47.

[Container]
The storage container 18 is a cover for storing the first and second pressurizing parts 14 and 15 and the first and second processing tools 16 and 17, and is provided with a temperature control device (not shown), and the inside of the storage container 18 is It is maintained in a predetermined temperature range. In this embodiment, the pressure drive unit 23 of the second pressure unit 15 is disposed outside the storage container 18, and the workpiece supply unit 11 and the workpiece recovery unit 13 are also disposed outside the storage container 18, and the volume is increased. I keep it as small as possible.

[Operation]
Next, the operation of the pressing device 10 will be described.
First, as shown in FIGS. 2 and 3, the first processing tool 16 is attached to the first pressing unit 14 and the position adjusting unit 26 in accordance with the work W and the mode of press working, and The second processing tool 17 is attached. At this time, the first processing tool 16 and the second processing tool 17 become relative positions within the tolerance range.

  Specifically, first, the die 32 is attached to the die set 24 via the position adjustment unit 26, the die support jig 31, and the height adjustment member 33. Therefore, the processing end of the die 32 is disposed with the manufacturing tolerances of these members and the assembly tolerances of the members being integrated.

  On the other hand, with respect to the die set 24, the punch 39 is the first backing plate 27, the die plate 28, the linear guide 29, the guide rod 37, the linear guide 42, the punch plate 38 and the second backing plate 35, and the punch support jig 41. It is attached through. Therefore, the processing end of the punch 39 is disposed in a state in which the manufacturing tolerances of the respective members and the assembly tolerances of the respective members are integrated.

  Furthermore, the processing end support 45 supporting the processing end of the punch 39 is attached to the die set 24 via the first backing plate 27, the die plate 28, the linear guide 29, the guide rod 37, and the stripper plate 36. . Therefore, the opening of the processing end support 45 is disposed in a state in which the manufacturing tolerances of these members and the assembly tolerances of the members are integrated.

  In this press processing apparatus 10, the processing end of the die 32 in the first processing tool 16, the processing end of the punch 39 in the second processing tool 17, and the opening of the processing end support 45 in the second support section 22. , Precisely aligned in nano order.

  Here, an adjustable gap is provided between the die support jig 31 of the first processing tool 16 and the die recess 28c of the die plate 28, and an adjustable gap is provided between the die 32 and the die through hole 28b. The entire first processing tool 16 is supported by the position adjustment unit 26. Therefore, the processing end of the die 32 can be precisely position-adjusted with respect to the die set 24 in the lateral direction, that is, in the X-axis and Y-axis directions.

  On the other hand, the second pressure unit 15 and the second processing tool 17 can be displaced in the longitudinal direction, that is, the Z-axis direction by the pressure drive unit 23. Here, the second pressing unit 15 and the second processing tool 17 are stably disposed by combining the linear guides 29 and 42, the guide rod 37, the collar 44 and the like with the first pressing unit 14. Since the processing end support 45 is fixedly provided on the stripper plate 36 having the two workpiece contact surfaces 36a, it can be displaced in the vertical direction with the lateral displacement prevented.

  Thereby, by adjusting the position of the processing end of the die 32 by the position adjustment unit 26, the processing end of the die 32 in the first processing tool 16, the processing end of the punch 39 in the second processing tool 17, and the second support portion The opening of the processing end support 45 at 22 can be precisely aligned in nano order.

In the apparatus of this embodiment, such precise alignment can be performed by a position control system as shown in FIG.
For example, after determining the relative position shift, as shown in FIG. 5, the control position command is input to the adjustment drive unit 51 based on the table preset in the storage unit of the control unit 52, and A driving voltage is applied to the first adjustment member 26a and the second adjustment member 26b.

The first adjustment member 26 a and the second adjustment member 26 b are displaced by the expansion and contraction of the precision drive mechanism such as the piezo element by the drive voltage, and the first processing tool 16 is displaced. The displacement is detected by the position sensor 53 and transmitted to the control unit 52.
The control unit 52 performs feedback control based on the control position command and the displacement gauge indication value of the first processing tool 16 to make the position of the first processing tool 16 mounted on the first adjustment member 26 a the second processing tool 17. And align precisely in nano order.

Thereafter, a strip-like work W is intermittently and sequentially fed from the work supply unit 11 between the first pressure unit 14 and the second pressure unit 15, and press working is performed at each position.
In this press working, as shown in FIG. 6A, the first pressing part 14 and the second pressing part 15 are separated, the mold is opened, and the work is brought into contact with the first work contact surface 28a of the die plate 28. Place W. As shown in FIG. 6B, when the second pressing unit 15 is lowered, the second work contact surface 36a of the stripper plate 36 pressed by the compression spring 54 contacts the work W, and the work is carried out. Hold W.

When the second pressing portion 15 is further lowered, as shown in FIG. 6C, the punch plate 38 and the second backing plate 35 are lowered, and the punch 39 is applied by the pressing portion 46 via the load sensor 47. As a result, the punch support jig 41 and the punch 39 are lowered.
At this time, the processing end of the punch 39 protrudes from the second workpiece contact surface 36 a through the tapered hole of the processing end support 45. Since the die 32 and the punch 39 are precisely aligned on the nano order, the punch 39 is inserted into the center of the die 32 to perform precise hole processing.

Thereafter, when the second pressing portion 15 is raised, as shown in FIG. 6 (d), the punch 39 rises and peels off from the work W in a state where the stripper plate supports the work W by pressure. The stripper plate 36 is lifted and opened by raising the pressing portion 15.
Then, the area after processing of the workpiece W is wound on the workpiece recovery unit 13, the next area is disposed between the first pressing unit 14 and the second pressing unit 15, and pressing is performed again.

[Function effect]
According to the press processing apparatus 10 as described above, the first pressing unit 14 that moves relative to the pressing direction has the position adjusting unit 26, and the first processing tool 16 is supported by the position adjusting unit 26. Therefore, even if the first pressing unit 14 and the second pressing unit 15 are configured with an error, the relative position between the first processing tool 16 and the second processing tool 17 can be precisely determined by the position adjustment unit 26. Can be adjusted. Therefore, it is not necessary to accurately configure many parts of the press processing apparatus 10, and the configuration can be simplified.

In addition, the first and second support portions 21 and 22 arranged so as to face each other such that the pressing portions 14 and 15 sandwich the work W can be adjusted in position of 1 μm or less in the direction intersecting the pressing direction. Since the die 32 of the first processing tool 16 supported by the position adjustment unit 26 is disposed in the opening 28 d of the die through hole 28 b in the first support unit 21, the first support unit 21 and the second support unit The workpiece W clamped by 22 can be processed by the 1st processing tool 16 position-adjusted by nano order.
Therefore, there is no deformation or distortion of the workpiece W, and nano-order positional accuracy processing is possible, such as processing by adjusting the position with a displacement amount of 1 μm or less.

Furthermore, if the relative position between the die 32 of the first processing tool 16 and the punch 39 of the second processing tool 17 can be adjusted to 1 μm or less, the clearance between the die 32 and the punch 39 can be set to 1 μm or less Become.
In this embodiment, although it is not essential to set the clearance between the die 32 and the punch 39 to 1 μm or less, when the clearance is set to 1 μm or less, the shape of the processing end of the die 32 and the processing of the punch 39 By precisely approximating the shape of the end, it is possible to process the workpiece W into a more precise shape.

That is, even if the first pressing unit 14 and the second pressing unit 15 are precisely manufactured and assembled, it is impossible to match the relative position with an accuracy of 1 μm or less. Therefore, when mounting the first processing tool 16 and the second processing tool 17 with the accuracy of the first pressing unit 14 and the second pressing unit 15, the die 32 and the punch 39 collide with each other during processing. In order to prevent this, the clearance must be set larger than 1 μm. In that case, the difference between the shape of the processing end of the die 32 and the shape of the processing end of the punch 39 is large, and the accuracy of the processing shape is lowered.
However, since the position adjustment unit 26 can adjust the position of the first processing tool 16 with a displacement amount of 1 μm or less, a positional deviation larger than 1 μm occurs between the first pressing unit 14 and the second pressing unit 15. Even if this is the case, the positional deviation can be corrected so that the die 32 and the punch 39 do not collide with each other at the time of processing. Therefore, it is possible to process the workpiece W into a more precise shape by setting the clearance between the die 32 and the punch 39 to 1 μm or less.

  According to this pressing apparatus 10, one of the first pressing unit 14 and the second pressing unit 15 that move relative to each other in the pressing direction is provided with the position adjusting unit 26. Since the tool 16 is supported, when adjusting the relative position between the first and second processing tools 16 and 17, there is no need to displace the entire pressing parts 14 and 15 to perform position adjustment, so position adjustment It is sufficient to displace only the first processing tool 16 by the part 26. Therefore, precise position adjustment can be easily performed.

  Further, in the hollow portion 25 of the first support portion 21 which supports the other load at the time of processing, a position adjustment portion 26 which supports the first processing tool 16 so as to be position adjustable is disposed. Since it is attached, when processing the workpiece W between the first processing tool 16 and the second processing tool 17, only the load for processing the workpiece W is applied to the position adjustment unit 26, and the other loads are processed. The first support portion 21 can be loaded.

  For example, an impact generated by coming into contact when holding the work W, a load for holding the work W to support it at a predetermined position, a load for pressing the work W at the time of processing to prevent deformation, and By receiving an impact or the like for stopping the relative movement of the first and second processing tools 16 and 17 by the first support portion 21, it is possible to prevent the first processing tool 16 from being loaded. For this reason, even if the first processing tool 16 is supported by the position adjustment unit 26, it is possible to prevent an excessive load from being applied to the position adjustment unit 26, and deterioration of the position adjustment unit 26 which enables precise adjustment It can prevent damage.

  According to this press processing apparatus 10, the position adjustment unit 26 can adjust the position of the first processing tool 16 within the range of the gap between the die 32 of the first processing tool 16 and the opening of the through hole 28b. The adjustment range of the position adjustment unit 26 can be reduced by reducing the gap.

  In this press processing apparatus 10, the position adjustment unit 26 has a first adjustment member 26a and a second adjustment member 26b, each of which is a precision drive mechanism such as a piezoelectric element that can be adjusted in directions different from each other. Is supported by the second adjustment member 26b, and the first processing tool 16 is supported by the first adjustment member 26b. Therefore, by adjusting the electrical energy supplied to each of the adjustment members 26a and 26b, the first processing tool 16 can be precisely adjusted in a plurality of directions with nano-order accuracy with a simple configuration.

  In this press processing apparatus 10, the second support portion 22 includes the stripper plate 36 mounted movably in the pressure direction on the second backing plate 36 of the second pressure portion 15, and the pressure direction of the stripper plate 36 is increased. The punch 39 of the second processing tool 17 is disposed in the punch through hole 38b provided in the. Therefore, the stripper plate 36 is raised and lowered by moving up and down in time with the second backing plate 36, for example, the work W is moved by the stripper plate 36 before the punch 39 of the second processing tool 17 descends and abuts on the work W If the operation is performed so as to hold the workpiece W, the workpiece W can be stably held without deformation. Further, if the stripper plate 36 is operated to separate from the work W after the punch 39 of the second processing tool 17 is lifted and separated from the work W, the punch 39 of the second processing tool 17 is assured from the work W It can be made to leave.

  In this press processing apparatus 10, the processing end support 45 for supporting the processing end side of the punch 39 of the second processing tool 17 so as to be capable of advancing and retracting is provided on the side of the first pressing part 14 in the punch through hole 38b. The fine processing end side of the processing tool 17 can be guided, and deformation and damage at the time of processing can be prevented.

  In this press processing apparatus 10, the amount of displacement of the first processing tool 15 is adjusted by feedback control, so that the amount of movement can be easily adjusted with high accuracy.

  In this pressing device 10, through holes 28b and 38b in the pressing direction are provided in the support portions 21 and 22, and the die 32 and the punch 39 of the processing tools 16 and 17 are supported in the pressing direction in the through holes 28b and 38b. And the relative position can be adjusted to a small amount. Therefore, the load for holding the work W by the support portions 21 and 22 and the load for processing the work W by the processing tools 16 and 17 can be appropriately adjusted.

In this press working apparatus 10, since the first and second pressing parts 14 and 15 and the first and second processing tools 16 and 17 are disposed in the storage container 18 maintained in the predetermined temperature range, the temperature change of each part In addition to being able to prevent the occurrence of positional displacement due to the above, it is possible to prevent a change in frictional resistance or the like in the operating part of the device, to ensure stable operation of the device, and to improve processing accuracy.
Moreover, since the first and second pressing parts 14 and 15 and the first and second processing tools 16 and 17 are accommodated in the container 18 in a state where the work supply part 11 and the work collection part 13 are disposed outside, The volume of the storage container 18 can be reduced, and as a result, the temperature control is significantly easier.

In this press processing apparatus 10, since the first support portion 21 is fixed at a plurality of places surrounding the through hole 28b, the strength of the first support portion 21 can be easily secured, and a load is applied to the first support portion 21 during processing. Even if it is done, it is hard to cause deformation or falling.
In this press processing apparatus 10, the work supply unit 11 sequentially delivers the wound strip-like work W between the first pressure unit 14 and the second pressure unit 15, and sequentially winds the processed work W. Since the workpiece recovery unit 13 is provided, nano-order processing can be sequentially performed at different positions in the longitudinal direction of the workpiece W. At that time, since the workpiece W is in the form of a band, alignment can be performed using a portion disposed outside between the first pressing portion 14 and the second pressing portion 15, and processing in nano order The position can be identified.

Second Embodiment
7 and 8 are drawings of a pressing apparatus according to a second embodiment.
In the first embodiment, when the first processing tool 16 and the second processing tool 17 are precisely aligned with each other, the position sensor 53 is used. In the second embodiment, as shown in FIG. The precise alignment is performed using a load sensor 47 as a pressure detection unit disposed in the punch recess 38a of the punch plate 38, as in the first embodiment.

When the first pressing unit 14 and the second pressing unit 15 are brought close to each other, as shown in FIG. 7A, when the die 32 is not precisely aligned with the punch 39, the load is The pressure in the pressure direction applied to the sensor 47 is large. However, as shown in FIG. 7B, when the die 32 is precisely aligned with the punch 39, the pressure applied to the load sensor 47 decreases.
So, in this embodiment, based on the detection value of the pressure detected by the load sensor 47, the shift of the relative position of the punch 39 and the die | dye 32 is determined.

  In order to control the position using the pressure detected by the load sensor 47, as shown in FIG. 8, after determining the deviation of the initial relative position, as shown in FIG. A control load command is input to the adjustment drive unit 51 based on a table set in advance, and a drive voltage is applied from the adjustment drive unit 51 to the first adjustment member 26 a and the second adjustment member 26 b.

The first adjustment member 26 a and the second adjustment member 26 b are displaced by the expansion and contraction of a precision drive mechanism such as a piezo element by the drive voltage, and the first processing tool 16 is displaced. When the punch 39 is pressurized by the second pressurizing unit 15 in that state, the pressure is detected by the load sensor 47, and the load measurement value is transmitted to the control unit 52.
The control unit 52 performs feedback control based on the control load command and the load measurement value, and aligns the position of the first processing tool 16 mounted on the first adjustment member 26 a with the second processing tool 17 in nano order.

  In such a press processing apparatus 10, the same function and effect as those of the first embodiment can be obtained, and a load in the pressing direction is detected in at least one of the first processing tool 16 and the second processing tool 17. And the displacement of the relative position between the first processing tool 16 and the second processing tool 17 is determined based on the detection value of the load sensor 47. Therefore, there is no need to directly measure the displacement by a length. The determination of the misalignment on the nano order can be performed extremely easily.

Third Embodiment
FIG. 9 shows a position adjustment unit of the pressing apparatus of the third embodiment.
In this press processing apparatus 10, the position adjustment unit 26 is provided on the stripper plate 36, and the position of the punch of the second processing tool 17 is precisely adjusted in nano order. Here, a bush through hole 55 larger in diameter than the punch through hole 38 b is provided in the stripper plate 36, and the stripper guide bush 56 is accommodated in the bush through hole 55. A gap is provided between the inner diameter of the bush through hole 55 and the outer diameter of the stripper guide bush 56. In the stripper guide bush 56, a punch through hole 38b is provided, and the punch 39, the punch support jig 41 and the processing end support 45 are disposed as in the first embodiment.

Further, the stripper plate 36 is provided with grooves 57 which communicate with the bush through holes 55 and extend in a plurality of directions, preferably in directions perpendicular to each other by a predetermined length.
A bar-shaped first adjustment member 26 a and a second adjustment member 26 b (not shown) that constitute the position adjustment unit 26 are disposed in each groove 57. The first adjustment member 26 a and the second adjustment member 26 b are formed by a precision drive mechanism such as a piezo element, and are provided in contact with the stripper guide bush 56 accommodated in the bush through hole 55.

When the first adjustment member 26a and the second adjustment member 26b expand and contract, the stripper guide bush 56 is displaced in the direction crossing the pressing direction. As a result, the punch support jig 41 and the punch 39 disposed in the punch through hole 38b of the stripper guide bush 56 can be displaced in the direction intersecting the pressing direction.
Others are the same as in the first embodiment.
Even if it is the press processing apparatus 10 of such a structure, the effect similar to 1st Embodiment can be acquired.

In addition, the press processing apparatus of this invention is not limited to said each embodiment, It can change suitably in the range of this invention.
For example, this embodiment is an example of a pressing apparatus which is expected to be used in the present invention and which performs micropunching which can be expected to be most effective among micropunching, bending and drawing. In this device, a punch and a die are installed to sandwich the strip-like work W, and fine drilling is performed by applying a load using a forging machine, but the basic form is the same in bending and drawing. Can be realized.

  In the first and second embodiments, the position adjusting unit 26 is provided in the first pressing unit 14, and in the third embodiment, the stripper plate 36 is provided with the position adjusting unit 26. However, the position adjusting unit is described. The place to arrange the 26 is not particularly limited. For example, the second pressure unit 15 may be provided with the position adjustment unit 26 as in the first embodiment. Furthermore, it is also possible to provide the position adjustment unit 26 at a plurality of portions of both the first pressing unit 14 and the second pressing unit 15.

  When the position adjusting unit 26 as in the first embodiment is provided in the second pressing unit 15, a gap that can be adjusted in position between the punch through hole 38 b or the punch recess 38 a of the punch plate 38 and the punch support jig 41 is provided. It is preferable to provide an adjustable gap between the punch through hole 36 b of the stripper plate 36 and the processing end of the punch 39 as well as providing. Further, it is preferable to provide a processing end support 45 in the die through hole 28 b of the die plate 28 to support the processing end of the die 32.

Furthermore, the above-mentioned precision drive mechanism is not limited to a piezo element, and may be a drive mechanism on which another circuit such as magnetostrictive, piezoelectric, electrostatic or the like is mounted.
Further, in the above description, the work supply unit 11 and the work recovery unit 13 are disposed using a strip-shaped long material as the work W, but it may be an apparatus provided with the processing unit 12, and the work supply unit 11 and the work recovery unit It is not necessary to arrange 13 mag.

W Work 10 Press Processing Device 11 Work Supply Unit 12 Work Unit 13 Work Recovery Unit 14 First Pressure Unit 15 Second Pressure Unit 16 First Work Tool (One Work Tool)
17 Second processing tool (the other processing tool)
18 container 21 first support portion 22 second support portion 23 pressure drive portion 24 die set 25 hollow portion 26 position adjustment portion 26a first adjustment member 26b second adjustment member 27 first backing plate 28 die plate 28a first work Contact surface 28b Die through hole 28c Die recess 28d Opening 29 Linear guide 31 Die support jig 32 Die 33 Height adjustment member 35 Second backing plate 36 Stripper plate 36a Second workpiece contact surface 36b Punch through hole 36c Guide rod Arrangement portion 37 Guide rod 38 Punch plate 38a Punch concave portion 38b Punch through hole 39 Punch 41 Punch support jig 42 Linear guide 43 Connection portion 44 Collar 45 Processing end support portion 46 Pressing portion 47 Load sensor 51 Adjustment drive portion 52 Control portion 53 position Sensor 54 Compression spring 55 Bush penetration 56 stripper guide bush 57 groove

Claims (9)

A first pressing unit and a second pressing unit relatively moving in the pressing direction, and one processing tool and the other processing tool mounted on the first and second pressing sections, A pressing apparatus for processing a workpiece between a processing tool and the other processing tool, wherein
At least one of the first and second pressure parts is a base, and a hollow support part fixed to the base and supporting a load from the other of the first and second pressure parts during processing; A position adjustment unit which is disposed in the hollow portion of the support unit and mounted on the base and supports the one processing tool so as to be adjustable in position in a direction intersecting the pressure application direction; And a support through hole ,
The pressing apparatus, wherein the one processing tool supported by the position adjusting unit is disposed at an inner side of the support portion through hole of the support portion with a gap that can be adjusted by the position adjusting unit.   The pressing apparatus according to claim 1, wherein the position adjusting unit is capable of adjusting the position of the one processing tool within the range of a gap between the one processing tool and the opening.   The position adjusting unit has a first adjusting member and a second adjusting member which are precision driving mechanisms capable of adjusting positions in different directions from each other, and the first adjusting member is supported by the second adjusting member. The pressing apparatus according to claim 1, wherein the one processing tool is supported by an adjusting member.   The support portion includes a stripper mounted so as to be movable in the pressing direction on the other base of the first and second pressing portions, and the stripper through hole provided in the pressing direction of the stripper is provided with the stripper. The stamping apparatus according to any one of claims 1 to 3, wherein the other processing tool is disposed.   The processing end support part which supports the processing end side of the other processing tool so as to be able to advance and retreat is provided on the pressing part side of one of the first and second pressing parts in the stripper through hole. Press processing apparatus as described. A drive unit that operates the position adjustment unit, a control unit that controls the drive unit, and a detection unit that detects a displacement of the one processing tool,
The press working apparatus according to any one of claims 1 to 5, wherein the control unit performs feedback control using a preset input value to the drive unit and a detection value of the detection unit. The one processing tool is supported by being positioned adjusted to the pressure direction by the supporting portion through hole, a press working apparatus according to any one of claims 1 to 6.   At least one of the processing tools is provided with a detection unit for detecting the pressure in the pressing direction, and the relative position shift between the one processing tool and the other processing tool is determined based on the detection value of the detection unit The pressing apparatus according to any one of claims 1 to 7, wherein A work supply unit for sequentially feeding the wound strip-like work between the first pressure unit and the second pressure unit; and a work recovery unit for sequentially winding the processed work;
The first and second pressure units and the one and the other processing tools are disposed in a storage container maintained in a predetermined temperature range, and the workpiece supply unit and the workpiece recovery unit are disposed outside. The pressing apparatus according to any one of to 8.

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