JPH05285573A - Progressive feed machining device - Google Patents

Abstract

PURPOSE:To collectively write plural numbers of machining means in the same cassette without largely changing the general driving means and to machine with progressively feeding the large product by connecting the main driving means and the sub driving means possible in synchronized-driving and increasing the driving force against the machining means. CONSTITUTION:Because pistons 307, 24 are synchronously driven dad rods 309, 22, 23 are lowered when the hydraulic oil is supplied to the upper part of hydraulic cylinders 301, 21 from the hydraulic circuit after adjusting the working position of a punch 19 with a working amount adjusting member 26, at first, a stripper supporting plate 18 is abutted with the stock to be worked, and the forming of the prescribed blanking, bending and compressing, etc., can be executed against the stock to be worked with the punch 19 and a die 13. In this case, because the piston 307 and the piston 24 are driven synchronously, both forces are operated to the punch 19. Therefore, it can be increased more than the driving force with only the hydraulic cylinder 306 provided on the body 1.

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 work piece, performs each step in one set of equipment and sequentially performs the work piece on the next step. The present invention relates to a progressive machining apparatus that feeds a pitch to advance machining with additional machining and completes machining in the final process.

[0002]

2. Description of the Related Art Conventionally, when a sheet metal product having a predetermined shape is manufactured by punching, bending, drawing or forming a plate material made of a structural material such as a steel plate, 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 workpiece is sequentially sent to the next stage to add processing. Then, the method of completing the processing at the final stage is adopted. Such a processing die is called a progressive die, and for example, one sheet metal product can be obtained for each stamp of the press, and therefore it has an advantage of extremely high efficiency.

In the above-mentioned conventional progressive feed die,
It has the advantages that the production speed is high, the delivery time is short after the work material is input and the processing is completed, and the number of work in process in the middle of the press working is small, so that a small number of people can mass-produce. There is a problem. That is, since the structure is one in which a plurality of pairs of punches and dies are incorporated into one mold, the mold structure becomes extremely complicated, high precision mold manufacturing technology is required, and the manufacturing period becomes long, and the manufacturing cost is high. Will be very expensive.

Further, even in the case of partial damage, repair and adjustment of the mold, it is necessary to disassemble the whole 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 if a dedicated die is manufactured each time, the die cost becomes high, and the demand is gradually increasing in recent years. There is a problem that it cannot meet the so-called FMS production system that is increasing.

In order to solve such a problem, the present applicant has already filed an application for a progressive working apparatus having a simple structure and capable of easily performing partial adjustment and the like (for example, Japanese Patent Application No. Hira 2-121760, 2-1
No. 21761). 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-
Each of the processing units 500 is disposed 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 with the dovetail groove 103 provided on the base 1 so that the movement of the workpiece can be adjusted in the feeding direction.
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 part.
Is provided so as to be movable up and down, and a punch or a die or a pair (not shown) paired with the die is provided at the bottom, and is detachably provided on the main body 101. The cassette 108 is positioned by engaging the positioning members 309 and 310 as shown in the processing unit 300. 111 is a clamp screw. That is, the cassette 108 is positioned by a positioning member (not shown, the processing unit 3
Main body 1 through reference numerals 309 and 310 in 00)
It is configured such that a predetermined positioning can be performed by mounting it on 01 and the position can be fixed by tightening the clamp screw 111. 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 pitch-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 machining process of the pilot hole 3, the machining process of the arcuate cut 4, and the first to third drawing processes, 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 the bowl-shaped projections 5 on the workpiece 2, and the arcuate notches 4 widen to change into arcuate grooves 6. Further, in the processing unit 400, the second drawing and the flange hole 7
Is processed, and the height of the protrusion 5 is increased. In the processing unit 500, the third drawing process is performed to form the height of the protrusion 5 into a predetermined size. Although not shown in the drawings, a predetermined bowl-shaped sheet metal product is obtained by performing edge cutting and other processing. In the processing units 200 to 500 as well, it is needless to say that by providing a guide that engages with the pilot hole 3, positioning is performed to ensure a predetermined accuracy.

[0011]

According to the progressive feeding apparatus having the above-mentioned configuration, the structure is simpler than that of the conventional progressive feeding die, and the manufacturing 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 the advantage that it can be processed, it has the following problems.

That is, as shown in FIG. 1, each of the plurality of processing units is provided with an independent dedicated hydraulic cylinder 106 and the like. Therefore, independent operation is possible, and the standardization and compatibility of common parts are achieved. However, for example, if a particular machining unit requires a larger driving force or working load than other machining units, a special hydraulic cylinder must be mounted on the machining unit. Therefore, there is a problem that not only the manufacturing cost becomes large, but also it becomes difficult to balance with other hydraulic cylinders.

On the other hand, it is possible to reduce the driving force or the operating load by dividing the machining process into a plurality of parts.
When such a means is used, the number of processing steps is increased, so that it is necessary to newly install a processing unit corresponding to them, which not only causes an increase in cost but also increases the size of the entire apparatus.

The pressure of the hydraulic oil is also the same, for example 14
It is customary to operate at high pressures such as 0 kg / cm ² .
However, it is only necessary to operate at high pressure in the processing of the above-described work material when performing bending, drawing, punching, or punching work, and the punch or die is brought close to or away from the work material. During the process, these processing means do not necessarily have to be operated at high pressure. On the other hand, hydraulic cylinders require a large amount of energy in order to create high-pressure hydraulic oil. In the conventional type, it is necessary to always use high-pressure hydraulic oil, and as described above, since a hydraulic cylinder with a stroke longer than necessary is used, the hydraulic oil amount becomes large, and as a whole, There is a problem that energy consumption is large.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a progressive working apparatus having a structure capable of selectively increasing the driving force or working load of a specific working unit.

[0016]

In order to achieve the above object, in the present invention, a plurality of processing units, each of which is provided with a cassette provided with a plurality of processing means, detachably mounted on a main body, are provided with 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 arbitrary processing unit is provided with a main drive means including a fluid pressure cylinder, and a cassette is provided with a sub drive means including a fluid pressure cylinder. The sub-driving means is connected to the processing means in the cassette, the main driving means and the sub-driving means are connected so that they can be synchronously driven, and the driving force for the processing means is increased. Cormorants adopted the technical means.

[0017]

With the above construction, the main driving means and the auxiliary driving means work in cooperation with each other in a synchronous manner when a particular processing unit requires a particularly large driving force when processing a workpiece, and punches. Alternatively, it is possible to increase the driving force for the processing means provided with the die.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is a sectional side view of an essential part showing an embodiment of the present invention, and FIG. 4 is a sectional view taken along the line AA in FIG. 3 and 4, the main body 301 of the processing unit 300 is mounted in the dovetail groove 303 provided in the base 1 through the dovetail groove 302 and fixed through the clamp device 304. Reference numeral 308 denotes a cassette, which is configured as described later and is detachably provided on the main body 301. A hydraulic cylinder 306 is provided at the upper end of the main body 301.

Next, the structure of the cassette 308 will be described. Reference numeral 11 denotes a substrate, which is formed in a flat plate shape, in which a die holder 12 is embedded and a die 13 is detachably provided. The die holder 12 and the die 13 are positioned via a reference portion 14 which is formed in a corresponding uneven shape and is provided radially. Next, reference numeral 15 is a guide post, which is provided upright at the four corners of the substrate 11, and a fixed plate 16 formed in a flat plate shape is provided at the upper end. 1
Reference numeral 7 denotes a movable holder, and 18 denotes a stripper support plate, which is slidably interposed in the guide post 15. Movable holder 17
A punch 19 forming a pair with the die 13 is provided through the stripper support plate 18. The movable holder 17
And the stripper support plate 18 are movably connected to each other via a support rod 20.

Reference numeral 21 denotes a hydraulic cylinder, which is fixed to the upper part of the fixed plate 16 and has a piston 24 having rods 22 and 23 fixed to the upper and lower sides, which is vertically slidable. The rod 22 is detachably connected to a rod 309 fixed to a piston 307 that is vertically slidably mounted on a hydraulic cylinder 306 via a joint 25. On the other hand, the rod 23 is connected to the movable holder 17 via the operation amount adjusting member 26. Reference numeral 310 is a positioning member, 311 is a clamp member, 312 is a scale provided on the base 1, and 313 is a position measuring member. The hydraulic cylinders 306 and 21 are configured so that hydraulic oil from a hydraulic circuit is supplied via a control device and a switching valve (both not shown), and the pistons 307 and 24 can be driven in synchronization.

With the above structure, when the working position of the punch 19 is adjusted by the working amount adjusting member 26 and then the working oil from the hydraulic circuit is supplied to the upper portions of the hydraulic cylinders 306, 21, the pistons 307, 24 are synchronized. Since the rods 309, 22, and 23 are moved downwards, the stripper support plate 18 first comes into contact with the workpiece (not shown),
By the punch 19 and the die 13, it is possible to perform predetermined forming, such as punching, bending, and compression, on the material to be processed. In this case, if the driving forces by the piston 307 and the piston 24 are F ₁ and F ₂ , respectively, the piston 307
And the piston 24 are driven synchronously, so the punch 1
The force of (F ₁ + F ₂ ) acts on 9. Therefore, the main body 30
It is possible to increase the driving force by only the hydraulic cylinder 306 provided in No. 1 and to carry a part of the reaction force at the time of processing the workpiece on the cassette 308.

Next, when the punch 19 reaches the bottom stop point, the supply of hydraulic oil to the upper side of the hydraulic cylinders 306 and 21 is stopped, and the hydraulic oil is supplied to the lower side of the hydraulic cylinders 306 and 21 by the switching valve. The punch 19 moves up, and then the stripper support plate 18 moves up to reach the upper stop point and stop. After each processing means reaches the top stop,
In, the work material is pitch-fed to the left and the next processing is repeated.

In this embodiment, an example in which a hydraulic cylinder is used as the driving means of the machining unit has been described, but it goes without saying that other fluid such as air or water may be generally used as the pressure medium. Also, an example in which the hydraulic cylinder has a two-stage configuration has been described, but a multi-stage configuration of three or more stages may be used depending on the magnitude of the driving force required for the drive means. Also, the rod 3 of the hydraulic cylinder 306 of the main body 301
09 and the rod 22 of the hydraulic cylinder 21 of the cassette 308
I explained the example of connecting and via the joint 25,
The rod 309 and the rod 22 may be brought into contact with each other as long as the operations of the punches 19 in the processing direction are synchronized. Further, the structure of the cassette is not limited to the one in which the fixing plate is provided on the upper part of the guide post erected on the substrate, and it may be a tunnel type or a rectangular tube type. Any structure may be used as long as the material to be processed can penetrate.

[0024]

EFFECTS OF THE INVENTION Since the present invention has the structure and operation as described above, the following effects can be obtained. (1) Even when the driving force or working load of a specific processing unit is increased, it is not necessary to significantly change the drive means of the main body, and the device can be made compact. (2) Since a relatively large space can be secured in the cassette, multiple processing means can be installed side by side in the same cassette in connection with (1) above, and progressive processing of large products becomes possible. .. (3) Even in the case of exchanging the processing means in the cassette, the positioning of the constituent members can be performed in a short time and with high accuracy, so that the operation rate of the entire apparatus can be improved.

[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 the plane and (b) shows the cross section.

FIG. 3 is a cross-sectional side view of essential parts showing an embodiment of the present invention.

4 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

100,200,300,400,500 Processing unit 21,306 Hydraulic cylinder 15 Guide post 17 Movable holder

[Procedure amendment]

[Submission date] May 15, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Reference numeral 21 denotes a hydraulic cylinder, which is fixed to the upper part of the fixed plate 16 and has a piston 24 having rods 22 and 23 fixed to the upper and lower sides, which is vertically slidable. The rod 22 is detachably connected to a rod 314 fixed to a piston 307 which is vertically slidably mounted on a hydraulic cylinder 306 via a joint 25. On the other hand, the rod 23 is connected to the movable holder 17 via the operation amount adjusting member 26. Reference numeral 310 is a positioning member, 311 is a clamp member, 312 is a scale provided on the base 1, and 313 is a position measuring member. The hydraulic cylinders 306 and 21 are configured so that hydraulic oil from a hydraulic circuit is supplied via a control device and a switching valve (both not shown), and the pistons 307 and 24 can be driven in synchronization.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

With the above structure, when the working position of the punch 19 is adjusted by the working amount adjusting member 26 and then the working oil from the hydraulic circuit is supplied to the upper portions of the hydraulic cylinders 306, 21, the pistons 307, 24 are synchronized. Since the rods 314 , 22, and 23 are moved downward, the stripper support plate 18 first comes into contact with the work material (not shown),
By the punch 19 and the die 13, it is possible to perform predetermined forming, such as punching, bending, and compression, on the material to be processed. In this case, if the driving forces by the piston 307 and the piston 24 are F ₁ and F ₂ , respectively, the piston 307
And the piston 24 are driven synchronously, so the punch 1
The force of (F ₁ + F ₂ ) acts on 9. Therefore, the main body 30
It is possible to increase the driving force by only the hydraulic cylinder 306 provided in No. 1 and to carry a part of the reaction force at the time of processing the workpiece on the cassette 308.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

In this embodiment, an example in which a hydraulic cylinder is used as the driving means of the processing unit has been described, but it goes without saying that other fluid such as air or water may be generally used as the pressure medium. Also, an example in which the hydraulic cylinder has a two-stage configuration has been described, but a multi-stage configuration of three or more stages may be used depending on the magnitude of the driving force required for the drive means. Also, the rod 3 of the hydraulic cylinder 306 of the main body 301
14 and rod 22 of hydraulic cylinder 21 of cassette 308
I explained the example of connecting and via the joint 25,
The rod 314 and the rod 22 may be brought into contact with each other as long as the operation of the punch 19 in the processing direction is synchronized. Further, the structure of the cassette is not limited to the one in which the fixing plate is provided on the upper part of the guide post erected on the substrate, and it may be a tunnel type or a rectangular tube type. Any structure may be used as long as the material to be processed can penetrate. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 15, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (1)

[Claims] 1. A plurality of processing units in which a cassette provided with a plurality of processing means is removably provided in a main body, and mP (m) is provided in a feed direction of a workpiece corresponding to 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 with respect to the pitch feed of the work material. In the configured progressive machining apparatus, a main driving means including a fluid pressure cylinder is provided in an arbitrary machining unit, a sub driving means including a fluid pressure cylinder is provided in the cassette, and the sub driving means is connected to the machining means in the cassette.
A progressive processing apparatus characterized in that the main driving means and the sub driving means are connected so as to be synchronously driven so as to increase the driving force for the processing means.