JPH05115999A - Progressive working device - Google Patents

Abstract

PURPOSE:To shorten the indirect operation and to improve the working ratio by providing interlockable an upper driving means and a lower driving means for driving the working means on the working unit body. CONSTITUTION:In the case of changing the working means, the cassette 308 can be taken out from the body 301 by taking out the clamping screw fixing the cassette 308 and moving with sliding the cassette 308 to this side of the orthogonal direction against the paper surface. Because the connecting members 34, 49 are connected to the rod 35 and the punch 41 by engaging a projection and a recessed groove whose section shape being at the parallel flat surface to the paper surface are formed to T shape, the interlocking state can be released while moving with the slide movement of the cassette 308.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, when performing punching, bending and drawing on a material to be processed, performs each step in one set of equipment, and sequentially processes the material to be processed in the next step. The present invention relates to a progressive-feed processing device that feeds a pitch to add processing to proceed and complete the processing in the final process.

[0002]

2. Description of the Related Art Conventionally, when a sheet metal product made of a structural material such as a steel plate is formed by punching, bending, pressing, or the like to form a sheet metal product having a predetermined shape, several steps are required. Is normal. When the number of sheet metal products manufactured is large, each process or stage is individually processed in one processing die, and the workpieces are sequentially sent to the next stage to add processing. Then, a means for completing the processing at the final stage is adopted. Such a processing die is referred to as a progressive die, and one sheet metal product can be obtained for each stamp of the press, for example, so that it has an advantage of extremely high efficiency.

In the above-mentioned conventional progressive feed die,
It has the advantages of high production speed, short delivery time after the work material is put in and completion of processing, less work in process in the middle of the press working, and the possibility of mass production by a small number of people. There is a problem. That is, since a plurality of pairs of punches and dies are assembled in one die, the die structure becomes extremely complicated, requires a highly precise die making technique, and lengthens the production period, resulting in a production cost. Will be very expensive.

Further, even when the mold is partially damaged, repaired, or adjusted, it is necessary to disassemble the entire mold, and since these operations are complicated, a lot of time and man-hours are required. Furthermore, in a high-mix low-volume production, if the shape and size of the work piece are slightly different and a dedicated die is manufactured each time, the die cost becomes high, and the demand gradually increases in recent years. However, there is a problem in that it cannot meet the so-called FMS production system, which is increasing.

In order to solve such a problem, the present applicant has already filed an application for a progressive machining apparatus having a simple structure and capable of easily performing a partial adjustment and the like (for example, Japanese Patent Application No. 2000-242242). Hira 2-121760, 2
-121761, etc.). The present invention is based on these improved inventions and further improved.

FIG. 1 is a perspective view of an essential part showing an example of a progressive feeding apparatus which is a premise of the present invention. In FIG. 1, 100-
Reference numerals 500 denote processing units, which are arranged on the base 1 in the feeding direction of a workpiece (not shown) at intervals of, for example, 2P (P is a feed pitch of the workpiece). Each of these processing units 100 to 500 corresponds to a plurality of processing steps.
A pair of punches and dies are provided, but processing unit 1
The configuration will be described taking 00 as an example. Reference numeral 101 denotes a main body, which is formed in a substantially U shape and has a dovetail shape at the lower end 102
Is integrally provided, and by adjusting the dovetail groove 103 provided on the base 1, it is possible to adjust the movement in the feed direction of the workpiece.
In addition, it is formed so that movement of the work material in the direction perpendicular to the feed direction can be restricted. Reference numeral 104 is a movement adjusting device, and 105 is a clamp device. A hydraulic cylinder 106 is provided at the upper end of the main body 101. A position measuring device 107 is provided on the side surface of the hydraulic cylinder 106.

Next, reference numeral 108 denotes a cassette, which is formed in a substantially U shape and has a punch or a die (neither is shown) on the upper portion.
Is provided so as to be movable up and down, and a punch or a die or a pair (not shown) paired with the above-mentioned punch is provided in the lower portion and is detachably provided on the main body 101. The cassette 108 is positioned by engagement with the positioning members 309 and 310 as shown in the processing unit 300. 111 is a clamp screw. That is, by mounting the cassette 108 on the main body 101 via a positioning member (not shown, and reference numerals 309 and 310 in the processing unit 300), predetermined positioning can be performed, and the position is fixed by tightening the clamp screw 111. It is configured to get. After the cassette 108 is fixed, the operating rod (not shown) of the hydraulic cylinder 106 is connected to the punch or die that is vertically movable.

FIG. 2 is an explanatory view of a main part showing a processing state of a work material, (a) shows a plane, (b) shows a cross section, and the same parts are designated by the same reference numerals as those in FIG. Indicate. Figure 2
2 is a material to be processed, which is intermittently fed at a pitch P in the arrow direction. That is, in FIG.
Pitch feed is performed in a gap between a pair of punches and a die provided in the cassette 108 (similarly in other cassettes). 1 and 2, the processing units 100 to 500
Are formed so as to correspond to the processing step of the pilot hole 3, the processing step of the arcuate cut 4, and the first to third drawing processing steps, respectively.

First, the processing unit 100 is provided with a punch and a die for forming the pilot hole 3, and the pilot hole 3 is provided at a position P on the downstream side in the feeding direction of the workpiece 2.
A guide (not shown) that engages with. Therefore, the pilot holes 3 are sequentially drilled each time the machining unit 100 is operated, and the guides are engaged with the drilled pilot holes 3 to prevent undesired displacement of the workpiece 2 and improve accuracy. Can be held.

Next, in the processing unit 200, the arcuate cut 4 is processed. And processing unit 300
In the above, the first drawing process is performed to form a bowl-shaped projection 5 on the workpiece 2 and the arc-shaped cut 4
Expands its width and changes into an arc-shaped groove 6. Further, in the processing unit 400, the second drawing process and the processing of the flange hole 7 are performed, and the height of the protrusion 5 increases. In the processing unit 500, the third drawing process is performed, and the height of the protrusion 5 is formed to have a predetermined size. Although not shown in the drawings, edge cutting and other processes are performed to obtain a predetermined bowl-shaped sheet metal product. Processing units 200-5
Also in 00, it is needless to say that by providing a guide that engages with the pilot hole 3, positioning for ensuring a predetermined accuracy is performed.

[0011]

According to the progressive feeding apparatus having the above-mentioned structure, the structure is simpler than that of the conventional progressive feeding die, and the production is easy, and the high efficiency is achieved even in the production of a wide variety of products in a small amount. Although it has an advantage that it can be processed, it has the following problems in progressive processing including drawing or bending.

3A and 3B are cross-sectional explanatory views of a main part showing a state in which drawing is performed. FIG. 3A shows a state before processing, FIG. 3B shows a state during processing, and FIG. 3C shows a state after processing. Shows. In FIG. 3, 11 is a punch and 12 is a die. For example, the processing units 100 and 200 in FIGS.
Corresponding to. Next, 13 is a drawing die and 14 is a drawing punch, which correspond to, for example, the processing units 300 to 500 in FIG. 1 and FIG. A spring 1 is placed in the drawing die 13.
A knockout pin 16 is provided which is urged downward by 5 and is slidable up and down. Next, the squeezing punch 14 is fixed on the holding plate 17, and a crease presser 18 is interposed in the squeezing punch 14. Wrinkle foot 18
Is connected to a movable plate 20 via a rod 19 penetrating the holding plate so as to be movable up and down and urged upward by a spring 21.

With the above structure, when machining is performed,
The punch 11 and the drawing die 1 from the state shown in FIG.
When 3 is operated downward by the hydraulic cylinder 106 or the like shown in FIG. 1, processing is performed as shown in FIG. 3 (b). That is, the punching process is performed by the engagement of the punch 11 and the die 12, and the drawing process is performed by the drawing die 13 and the drawing punch 14. In the drawing process, the drawing die 13 and the wrinkle retainer 18 come into contact with each other, and the knockout pin 16 and the drawing punch 14 come into contact with each other via the workpiece 2, and the drawing punch 14 further enters the drawing die 13 to perform the drawing process. Is done. In this case, since the wrinkle retainer 18 presses the work piece 2 against the lower end surface of the drawing die 13 by a predetermined spring pressure, the work piece 2 is allowed to move in the horizontal direction to allow the work piece 2 to move. The plastic deformation is promoted, and at the same time, undesired wrinkles are prevented from occurring in the workpiece 2. Next, after the processing is completed, the punch 11 and the drawing die 13 are attached to the hydraulic cylinder 10 as shown in FIG.
When it is moved upward by the backward movement of 6 or the like, the pitch feed of the work material 2 becomes possible. In this case, since the knockout pin 16 is biased downward by the spring 15, the protrusion 5 can be easily discharged from the drawing die 13.

The processing units 300 to 500 as described above.
The drawing die 13, the drawing punch 14, the wrinkle retainer 18 and the like that form the processing means are all provided in the cassette 108 and the like shown in FIG. Therefore, even if all or part of the machining mode or machining process for the workpiece 2 is changed, it is sufficient to replace the cassette 108 and the like, which is advantageous in the so-called FMS system production. There is.

However, the drawing die 13 and the drawing punch 1
4, components forming the processing means such as the wrinkle retainer 18,
Since it is necessary to separately incorporate them into the cassette 108 or the like in correspondence with the processing mode or processing steps, these must be prepared for each processing item of the work material 2 exclusively, and a common configuration There are few parts, and lack of consideration for standardization. For this reason, the time and man-hours required for indirect work such as setup change are unexpectedly large, the ratio of the main body work time of progressive machining decreases, and it is difficult to improve the production efficiency.

Further, in order to shorten the processing time in each of the processing units 300 to 500, for example, when the diaphragm punch 14 and the crease presser 18 in FIG. Since it is necessary to provide a driving means formed exclusively for each of them, not only the cost for manufacturing the device is increased, but also it is inefficient, which causes a problem of increasing the production cost. To do.

On the other hand, the aperture punch 14 and the wrinkle retainer 1
Even when the lower processing means such as 8 is configured to be driven by the sharable lower driving means, the replacement work cannot be expected to be smoothly performed unless the connecting means between the two is improved. That is, since the lower processing means has more constituent members than the upper processing means formed by the drawing die 13 and the like and is limited in space, the lower processing means may only be formed by bolts or other ordinary fastening means. However, there is a problem that it is impossible to easily and reliably connect the lower drive means and the lower drive means.

The present invention solves the above-mentioned problems, standardizes the constituent members, and provides a progressive feeding apparatus capable of easily and reliably exchanging the processing means and greatly improving the operation rate of the entire apparatus. With the goal.

[0019]

In order to achieve the above object, in the present invention, a plurality of processing units each having a plurality of processing means detachably provided in a main body are provided in a plurality of processing steps. In the feed direction of the work material at intervals of mP (m is an arbitrary positive integer, P is the feed pitch of the work material), and the plurality of machining operations are performed with respect to the pitch feed of the work material. In a progressive processing apparatus configured to sequentially perform the steps by the plurality of processing units, an upper driving means and a lower driving means for driving the processing means are provided on the main body of the processing unit corresponding to the drawing step or the bending step. The technical means is employed which is interlockable and opposed to each other, and detachably connects the driving means and the processing means.

[0020]

With the above configuration, when the working mode or working process for the work material is changed, or when the working means or the like is partially repaired or adjusted, so-called indirect work such as replacement, repair or adjustment is performed. It can be carried out within a short time, and the ratio of the main working time of the progressive machining can be increased.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 4 is a sectional front view of the essential parts of a first embodiment of the present invention. In FIG. 4, reference numeral 301 denotes a main body of the processing unit, which corresponds to the one for the first diaphragm in FIG. The main body 301 is attached via a dovetail groove provided in the base 1 (neither is shown, see dovetail groove 103, dovetail groove 102 in FIG. 1). And the cassette 308 provided with a deep-drawing die and processing means such as a punch, which will be described later,
It is fixed to a predetermined position of the main body 301 via the positioning members 309 and 310 shown in FIG. 1 via a clamping screw (not shown). Reference numeral 306 is a hydraulic cylinder that operates a die described later.

Next, 31 is a die mounting member, and a die 32 for drawing is fixed to the lower end portion of the cassette 30.
It is provided so as to be slidable up and down via a sleeve 33 fitted to the member 8. The die mounting member 31 is detachably connected to a rod 35 that engages with the hydraulic cylinder 306 via a connecting member 34. 36 is a knockout pin, which is a die attachment member 31.
Further, it is formed so as to be slidable vertically in the die 32 and is urged downward via a spring 37. 38
Is a position measuring device, and is provided above the hydraulic cylinder 306.

Reference numeral 39 denotes a holding member, which is detachably attached to the lower portion of the cassette 308 and also has a supporting plate 42 and a supporting plate 4.
The wrinkle retainer 40 and the punch 41 mounted on the upper part 2 are held so as to be vertically movable. Next, 43 and 44 are punch hydraulic cylinders and wrinkle holding hydraulic cylinders, which are fixed in series to the lower cassette support plate 45 provided at the lower portion of the main body 301 via mounting members 46 and 47, respectively. Then, the rod 48 of the punch hydraulic cylinder 43 and the punch 41 are detachably connected via a connecting member 49.
Further, a connecting rod 52 is implanted in the driving member 51 fixed to the rod 50 of the wrinkle holding hydraulic cylinder 44, and the connecting rod 52 is attached.
Is formed so as to abut the lower surface of the support plate 42. The hydraulic cylinder 306 and the punch hydraulic cylinder 4
3 and the wrinkle holding hydraulic cylinder 44 are configured so that the application and release of hydraulic pressure can be controlled in accordance with the processing mode.

With the above construction, first, the hydraulic cylinder 30
6 to activate die 32 and knockout pin 36.
Down and bring their lower ends into contact with the work piece 2,
Further, the workpiece 2 is sandwiched by the holding member 39, the wrinkle retainer 40 and the punch 41. Next, pressure oil is introduced into the wrinkle retainer hydraulic cylinder 44 and the punch hydraulic cylinder 43 to urge the wrinkle retainer 40 and the punch 41 upward. As a result, the work piece 2 is clamped by the wrinkle retainer 40 and the die 32, and the punch 41 moves into the die 32 against the biasing force of the spring 37, so that the first drawing process (processing unit in FIG. 2) is performed. Molding of the protrusion 5 by 300) is performed.

After the completion of the first drawing process, the hydraulic pressure applied to the wrinkle press hydraulic cylinder 44 and the punch hydraulic cylinder 43 is released, the bias to the wrinkle press 40 is released, and the punch 41 is lowered. The spring 37 urges the knockout pin 36 downward. If the hydraulic cylinder 306 is actuated in the reverse direction at the same time as the above or after some time passes, the die 32 rises, and at the same time, the workpiece 2 is discharged from the die 32 by the spring 37, and the state shown in FIG. 4 is obtained. Restore and complete the first drawing step.

Next, a description will be given of a mode in which the processing means is replaced when the processing mode or processing step for the workpiece 2 is changed. First, the clamp screw (not shown, see the clamp screw 111 in FIG. 1) fixing the cassette 308 is removed, and the cassette 308 is slid forward in the direction perpendicular to the paper surface in FIG. It can be removed. In this case, the connecting member 3
In Nos. 4 and 49, due to the engagement between the protrusion and the groove having the T-shaped cross section in the plane parallel to the paper surface,
Since it is connected to the rod 35 and the punch 41, the connected state is automatically released by the sliding movement of the cassette 308. Further, the support plate 42 and the connecting rod 52 are
Since it is merely in the contact state, the sliding movement of the cassette 308 is not hindered.

Next, the cassette 308 provided with new processing means may be mounted by sliding it from the front side in FIG. That is, the connecting members 34 and 49 are automatically connected to the rod 35 and the punch 41, and the upper end of the connecting rod 52 and the lower surface of the support plate 42 are in contact with each other. In this case, each cassette 30
It is important to standardize the outer shapes and dimensions of the engaging portions of the connecting member 34 and the punch 41 and the supporting plate 42 in FIG. 8 so as to be compatible.

By forming as described above, the wrinkle holding hydraulic cylinder 4 mounted on the lower cassette support plate 45 including the hydraulic cylinder 306 serving as the upper drive means.
4. Lower driving means such as the punch hydraulic cylinder 43 can be shared. Therefore, even when the cassette 308 is attached and detached, it is not necessary to remove and replace the drive means, and the replacement work time can be greatly shortened. Although the example of the first drawing process shown in FIGS. 1 and 2 has been described with reference to FIG. 4, the configuration and operation are the same in other drawing processes.

FIG. 5 is a sectional front view showing the second embodiment of the present invention, and the same parts are designated by the same reference numerals as those in FIG. FIG. 5 corresponds to one for bending, and shows an example in the case of bending a workpiece to have a U-shaped cross section. In FIG. 5, reference numeral 61 is a mounting member, and the pressing punch 62 is fixed to the lower end portion of the sleeve 3 fitted in the cassette 308.
It is formed so as to be slidable up and down through 3. Reference numeral 63 denotes a holding member which is detachably provided on the lower portion of the cassette 308 and holds the support plate 64 and the bending punches 65 and 66 mounted on the support plate 64 so as to be vertically movable. Reference numeral 67 denotes a lower cassette support member, which is provided in the lower portion of the main body 301, has a punch hydraulic cylinder 68 attached to the lower portion thereof, and supports a connecting member 49 connected to a rod 69 of the punch hydraulic cylinder 68 so as to be vertically movable. The connecting member 3
The structures of the connecting and engaging portions of the rods 4, 49 with the rod 35 and the support plate 64 are the same as those in FIG.

With the above configuration, the punch hydraulic cylinder 6
8 is deactivated, and the upper ends of the bending punches 65 and 66 are held flush with the upper surface of the holding member 63 or slightly below it. Then, the hydraulic cylinder 306 is operated to lower the pressing punch 62, and the workpiece 2 is sandwiched between the pressing member 62 and the holding member 63. Next, if the punch hydraulic cylinder 68 is operated to raise the bending punches 65 and 66 via the rod 69, the connecting member 49 and the support plate 64, the bending work is performed as shown in FIG. After the processing is completed, the hydraulic cylinder 306 and the punch hydraulic cylinder 68 are operated in the opposite directions to restore the state before the processing.

Next, when the machining specifications for the workpiece 2 are changed and when the machining means is replaced, a clamp screw (not shown) for fixing the cassette 308.
Can be removed and the cassette 308 can be removed from the main body 301 by sliding the cassette 308 in the direction perpendicular to the paper surface.
In this case, the engagement / disengagement state of the rod 35 and the support plate 64 in the connecting members 34 and 49 is the same as that in the first embodiment. Therefore, the cassette 308 provided with a new processing means can be easily attached.

Also in the second embodiment, the cassette 30 is used.
It is important that the engaging portions of the connecting member 34 and the support plate 64 and the outer shape and size of the support plate 64 in FIG. 8 are standardized so as to be compatible. By forming in this way, the upper drive means and the lower drive means can be made common, and the same effect as the first embodiment can be expected.

FIG. 6 is a cross-sectional front view of essential parts showing a third embodiment of the present invention, and the same portions are designated by the same reference numerals as those in FIG. In FIG. 6, reference numeral 71 denotes a punch support plate, which is provided below the cassette 308 to fix the punch 41. A supporting rod 72 is provided on the lower cassette supporting plate 45, and a connecting rod supporting plate 74 is supported by a spring 73 while being biased upward. The wrinkle retainer 40 is formed in a plate shape and is punched 41.
The connecting rod 75 is fixed by, for example, engraving a screw, and placed on the connecting rod support plate 74 via the connecting rod 75.

With the above structure, when the hydraulic cylinder 306 is operated to lower the die 32 and the knockout pin 36, a work material (not shown) is formed on the work material (not shown) as in the first embodiment shown in FIG. On the other hand, the drawing process can be performed.
In this case, since the wrinkle retainer 40 moves down while the work piece is sandwiched by the die 32, it is possible to suppress wrinkles generated in the work piece due to the biasing pressure of the spring 73. After the drawing process is completed, the state shown in FIG. 6 can be restored by the reverse operation of the hydraulic cylinder 306.

Next, when replacing the cassette 308,
Raise the wrinkle retainer 40 a little upward and move the connecting rod 75
With the lower end portion of the cassette 308 being pulled out above the upper surface of the lower cassette support plate 45, the cassette 308 is slid forward in the direction perpendicular to the plane of the paper, so that the cassette 308 is moved to the main body 301.
Can be removed from. Connecting member 34 and rod 35
Can be automatically removed by sliding the cassette 308.
Next, the cassette 308 provided with the new processing means may be mounted in the opposite direction to the above. In this case, it is preferable that the lower end of the connecting rod 75 is slightly above the upper surface of the lower cassette support plate 45. When the cassette 308 is mounted at a predetermined position on the main body 301, the connecting member 34 and the rod 35 are automatically connected, and the lower end of the connecting rod 75 connected to the wrinkle retainer 40 is placed on the connecting rod support plate 74. And the wrinkle retainer 40 is positioned at a predetermined position.

In the third embodiment, if the installation position of the connecting rod 75 is standardized and, for example, selected according to the maximum size of the wrinkle retainer 40, the lower drive means can be made common. The same effects as those of the first and second embodiments can be expected. The length of the connecting rod 75 is preferably adjustable so that it can be adjusted by screws or other means.

In this embodiment, an example of drawing and bending has been described, but the same applies to compression. Further, although the example in which the hydraulic cylinder is used as the driving means has been described, a fluid pressure cylinder including air, water, etc. may be used, and a driving means other than the fluid pressure cylinder may be used. Furthermore, the arrangement interval of processing units is
Generally, it can be set to mP (m is a positive integer), and the arrangement interval may be different as necessary.

[0038]

EFFECTS OF THE INVENTION Since the present invention has the structure and operation as described above, the following effects can be obtained. (1) The lower drive means is provided at the lower end of the main body of the processing unit, so that the processing means is divided and configured to be detachable, so that the cassette with the processing means can be easily replaced. In addition, since it can be performed within a short time, the operating rate of the entire apparatus can be significantly improved. (2) By standardizing the lower drive means and the processing means connecting portion, the constituent members can be shared, and the manufacturing cost and maintenance cost of the device can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing an example of a progressive processing apparatus that is a premise of the present invention.

FIG. 2 is an explanatory view of a main part showing a processing state of a work material,
(A) shows a plane and (b) shows a cross section.

FIG. 3 is an explanatory cross-sectional view of a main part showing a state when performing drawing processing, in which (a) shows a state before processing, (b) shows a state during processing, and (c) shows a state after processing.

FIG. 4 is a cross-sectional front view of essential parts showing a first embodiment of the present invention.

FIG. 5 is a cross-sectional front view of essential parts showing a second embodiment of the present invention.

FIG. 6 is a cross-sectional front view of essential parts showing a third embodiment of the present invention.

[Explanation of symbols]

100, 200, 300, 400, 500 Processing unit 306 Hydraulic cylinder 32 Die 41 Punch 43 Punch hydraulic cylinder 44 Wrinkle press hydraulic cylinder 62 Presser punch 65, 66 Bending punch 68 Bending punch hydraulic cylinder 73 Spring

Claims (1)

[Claims] 1. A plurality of processing units in which a cassette provided with a plurality of processing means is detachably provided in a main body, and mP (m) is provided in a feed direction of a workpiece in correspondence with a plurality of processing steps.
Is an arbitrary positive integer, P is arranged at intervals of the feed pitch of the work material, and the plurality of processing steps are sequentially performed by the plurality of processing units for the pitch feed of the work material. In the configured progressive machining apparatus, an upper driving means and a lower driving means for driving the machining means are provided in the main body of the machining unit corresponding to the drawing process or the bending process so as to be interlockable and face each other, and these driving means and A progressive processing device characterized by being detachably connected to a processing means.