JPH05104295A - Progressive machining device - Google Patents

Abstract

PURPOSE:To work with a driving means having a necessary and minimum capacity by connecting plural sets of driving means set on a working unit in series with their movable members freely close to and away from each other, and composing this device to selectively drive these driving means. CONSTITUTION:A connecting member 314 connects operating rods 315 of three hydraulic cylinders 306 in co-operable. The progressive work ca be executed by pitch-feeding the stock to be worked to the arrow mark direction, and a working unit 300b can obtain a larger driving force than the other working unit. That is, if the usual driving force is W, the working unit 300b can obtain 3W. Generally, in the case that hydraulic cylinders of n working units are connected with the connecting member 314 and the moving punches (it may be movable dies) of s working units are driven, the driving force of each moving punch can be made to nW/s times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, when punching, bending and drawing a work piece, performs each step in one set of equipment, and sequentially performs the work piece in 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 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-
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, by mounting the cassette 108 on the main body 101 via a positioning member (not shown, 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 pitch-fed at a pitch P in the arrow direction. That is, in FIG.
Pitch feed is performed on the gap between a pair of punches and dies provided on the cassette 108 (similarly for 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 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 to form the height of the protrusion 5 into a predetermined size. Although not shown in the drawings, edge cutting and other processing are performed to obtain a desired 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 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.

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

[0015]

In order to achieve the above object, in the first aspect of the present invention, a plurality of processing units, each of which has a cassette provided with a plurality of processing means and which is detachably provided in a main body, includes a plurality of processing units. Corresponding to the machining process, the workpieces are arranged in the feed direction at intervals of mP (m is an arbitrary positive integer, P is the feed pitch of the workpiece), and the plurality of workpieces are fed with respect to the pitch feed of the workpiece. In a progressive processing apparatus configured to sequentially perform the processing steps of
Independent driving means provided in a plurality of adjacent arbitrary processing units are formed so as to cooperate with each other through a connecting member, and formed so as to drive an arbitrary punch or die through the connecting member. Adopted technical means.

Next, in the second aspect of the invention, a plurality of processing units, each of which has a cassette provided with a plurality of processing means and which is detachably mounted on the main body, are provided with a plurality of processing steps corresponding to a plurality of processing steps. Are arranged at intervals of mP (m is an arbitrary positive integer, P is 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 a progressive processing apparatus configured to carry out, a plurality of driving means provided in a processing unit are connected in series and these movable members can be contacted and separated from each other, and a driving means nearer to a punch or a die is selected. We adopted the technical means of forming it so that it can be driven mechanically.

In the above invention, as the driving means,
Fluid cylinders such as hydraulic cylinders or pneumatic cylinders can be used.

[0018]

With the above structure, a plurality of driving means is used when a driving force larger than usual is required, and a single driving means is used if processing can be performed only with the normal driving force. Predetermined progressive machining is possible.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is a front view of essential parts showing an embodiment of the present invention, and the same parts are designated by the same reference numerals as those in FIGS. In FIG. 3, three processing units having the same configuration are provided adjacent to each other on the base 1, and these are indicated by reference numerals 300a, 300b and 300c. In FIG. 3, the main body 301 of the processing unit 300 is mounted on a dovetail groove (not shown) provided on the base 1 and attached. The punch 3 formed in the cassette 308 is movable up and down.
12 and a die 313 which makes a pair with the punch 312 are provided and detachably provided on the main body 301. 306 is a hydraulic cylinder, and 307 is a position measuring device, which is provided at the upper end of the main body 301. In addition, in FIG. 3, only the central processing unit 300b is configured to contribute to the processing. Therefore, no die is attached to the processing units 300a and 300c at the left and right ends. Next, reference numeral 314 is a connecting member for connecting the operating rods 315 of the three hydraulic cylinders 306 so as to cooperate with each other.

With the above-described structure, by feeding the workpiece 2 in the direction of the arrow, it is possible to carry out the progressive machining as shown in FIGS. 1 and 2, and in the machining unit 300b shown in FIG. A larger driving force can be obtained than in the processing unit. That is, if the normal driving force is W, in the processing unit 300b, 3
The driving force of W is obtained. Generally, the hydraulic cylinders of n processing units are connected by a connecting member 314,
When the movable punches (or movable dies) in the s processing units are driven, the driving force of each movable punch is n.
It can be W / s times.

FIG. 4 is a sectional side view of an essential part showing another embodiment of the present invention, and the same parts are designated by the same reference numerals as those in FIGS. 1 and 3. In FIG. 4, the main body 301 is the base 1
It is mounted via the dovetail groove 303 provided at the position of the dovetail groove 302 and is fixed by the clamp screw 311. Next, the hydraulic cylinder 306 includes a first cylinder 306a and a second cylinder 306.
b in series connection with each other, and each piston 316
a, 316b are interposed. And piston rod 317
a is connected to the punch 312 and is connected to the piston rod 3
17b is formed so as to face the inside of the first cylinder 306 and to be able to come into contact with and separate from the piston 316a. The first cylinder 306a and the second cylinder 306b are configured so that hydraulic pressure can be applied simultaneously or individually via a control device (not shown).

With the above construction, when the machining can be performed by the normal driving force, the application of the hydraulic pressure to the second cylinder 306b is cut off, and the punch 3 is performed only by the first cylinder 306a.
12 is operated to perform processing. If a large driving force is required, the piston 3 can be operated by operating the control device so that the hydraulic pressure is also applied to the second cylinder 306b.
16b is actuated, the piston rod 317b abuts the piston 316a, and the punch 312 can be actuated in cooperation with each other. Generally, when n cylinders having the same driving force are connected in series and s cylinders are selectively operated from the side close to the punch 312, if the driving force of each cylinder is W, then sW driving is performed. The force can be obtained, and the selection range can be W to nW.

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

[0024]

EFFECTS OF THE INVENTION Since the present invention has the structure and operation as described above, the following effects can be obtained. (1) By using the driving means having substantially the same capacity, the energy balance of the entire apparatus can be well maintained, and the driving force of an arbitrary processing unit can be selectively increased. (2) Since it is not necessary to use a specially designed driving means, the manufacturing cost can be reduced, and the processing can be performed by the driving means having the minimum necessary capacity.
High efficiency of energy use.

[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 front view of an essential part showing an embodiment of the present invention.

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

[Explanation of symbols]

100, 200, 300, 400, 500 Processing unit 306 Hydraulic cylinder 306a 1st cylinder 306b 2nd cylinder 314 Connection member

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[Procedure amendment]

[Submission date] October 24, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[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 workpiece, and the plurality of processing steps are sequentially performed by the plurality of processing units for the pitch feed of the workpiece. In the configured progressive feeding apparatus, independent driving means provided in adjacent plural arbitrary processing units are formed so as to be cooperatively operated through a connecting member, and an arbitrary punch or die is driven through the connecting member. A progressive processing apparatus characterized by being formed as described above. 2. A plurality of processing units, each of which has a cassette provided with a plurality of processing means and which is detachably mounted on a main body, corresponding to a plurality of processing steps in a feed direction of a work material by mP (m
Is an arbitrary positive integer, P is arranged at intervals of the feed pitch of the workpiece, and the plurality of processing steps are sequentially performed by the plurality of processing units for the pitch feed of the workpiece. In the configured progressive processing apparatus, a plurality of driving means provided in the processing unit are connected in series and these movable members are releasably connected to each other, and the driving means near the punch or die can be selectively driven. A progressive processing device characterized in that