JP3285906B2 - Progressive processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, when performing a process such as punching and bending drawing on a work material, performing each process in a set of devices, and sequentially performing the work material in the next process. The present invention relates to a progressive processing apparatus for performing additional processing by pitch-feeding and performing processing in a final step.

[0002]

2. Description of the Related Art Conventionally, when a sheet metal product having a predetermined shape is manufactured by punching, bending, drawing, and forming a sheet material made of a structural material such as a steel sheet, several steps are required. Is normal. When the production quantity of such sheet metal products is large, each step or stage is individually processed in one processing die, and the workpiece is sequentially sent to the next stage to add processing. Then, means for completing the processing in the final stage is employed. Such a processing die is called a progressive die. For example, since one sheet metal product can be obtained for each stamp of the press, there is an advantage that the efficiency is extremely high.

In the above-mentioned conventional progressive die,
In spite of the advantages of high production speed, short delivery time from the input of the work material to the completion of processing, small work in the middle of press working, and the possibility of mass production by small numbers of people, Problems.
That is, since a plurality of pairs of punches and dies are incorporated in one mold, the mold structure becomes extremely complicated, and requires high-precision mold manufacturing technology. Is expensive.

Also, when the mold is partially damaged, repaired, or adjusted, it is necessary to disassemble the entire mold, and these operations are complicated, so that much time and man-hours are required. Furthermore, in the case of small-scale production of many kinds, when the shape and dimensions of the workpieces are slightly different, the use of a dedicated mold is required each time, and the cost of the mold is relatively high. However, there is a problem that it cannot respond to 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 (see, for example, Japanese Patent Application No. 2000-287,197). Hei 2-121760, 2-1
No. 21762). The present invention has been further improved on the premise of these improved inventions.

FIG. 1 is a perspective view of an essential part showing an example of a progressive machining apparatus which is a premise of the present invention. In FIG.
Reference numerals 500 denote processing units, which are arranged on the base 1 at intervals of, for example, 2P (P is the feed pitch of the workpiece) in the feed direction of the workpiece (not shown). Each of these processing units 100 to 500 has one corresponding to a plurality of processing steps.
Although a pair of punches and dies are provided, processing unit 1
00 will be described 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.
Are integrally formed and can be moved and adjusted in the feed direction of the workpiece by engaging with the dovetail groove 103 provided in the base 1.
In addition, it is formed so as to be able to restrain the movement of the workpiece in the direction perpendicular to the feed direction. 104 is a movement adjusting device, and 105 is a clamp device. Reference numeral 106 denotes a hydraulic cylinder, which is provided at the upper end of the main body 101. A position measuring device 107 is provided on a side surface of the hydraulic cylinder 106.

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.
Are provided so as to be vertically movable, and a punch or a die (not shown) paired with the die is provided at a lower portion, and is detachably provided on the main body 101. The positioning of the cassette 108 is performed by engagement with positioning members 309 and 310 as shown in the processing unit 300. 111 is a clamp screw. That is, the cassette 108 is moved to a positioning member (not shown,
00 (see reference numerals 309, 310).
In addition, a predetermined position can be determined by attaching the clamp screw to the mounting position, 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 vertically movable punch or die.

FIGS. 2A and 2B are explanatory views of a main part showing a processing state of a workpiece. FIG. 2A is a plan view, FIG. 2B is a cross-sectional view, and the same parts are denoted by the same reference numerals as in FIG. Indicated by In FIG. 2, reference numeral 2 denotes a workpiece, which is intermittently fed at a pitch P in the direction of the arrow. That is, in FIG. 1, the pitch between a pair of punches and a die provided in the cassette 108 (the same applies to other cassettes) is fed in a pitch. 1 and 2, the processing units 100 to
Reference numeral 500 is formed so as to correspond to the processing step of the pilot hole 3, the processing step of the arc-shaped notch 4, and the first to third drawing steps, respectively.

First, the processing unit 100 is provided with a punch and a die for drilling the pilot hole 3, and the pilot hole 3 is located at a position P on the downstream side in the feed direction of the workpiece 2.
And a guide (not shown) that engages the Therefore, each time the processing unit 100 is operated, the pilot holes 3 are sequentially drilled, and the guides engage 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 arc-shaped notch 4 is processed. And the processing unit 30
At 0, the first drawing is performed, a bowl-shaped projection 5 is formed on the workpiece 2, and the arc-shaped notch 4 expands its width to change into an arc-shaped groove 6. Further, in the processing unit 400, the second drawing and the processing of the flange hole 7 are performed, and the height of the protrusion 5 is increased. In the processing unit 500, the third drawing is performed, and the height of the projection 5 is formed to a predetermined size. Thereafter, although not shown, edge cutting and other processes are performed to obtain a predetermined bowl-shaped sheet metal product. Processing units 200 to 500
Also in the above, by providing a guide that engages with the pilot hole 3, it goes without saying that positioning for ensuring predetermined accuracy is performed.

[0011]

According to the progressive machining apparatus having the above-described structure, the structure is simpler than that of the conventional progressive die, and the production is easy. Although it has the advantage of processing, it has the following problems.

FIG. 5 is an enlarged plan view of a main part of the processing unit in FIG. 2, and FIG. 6 is a side view of a main part of the processing unit including a cross section taken along line AA in FIG. Are indicated by the same reference numerals. 5 and 6, reference numeral 208 denotes a cassette to which the die 31 is fixed. The die 31 is provided with a slit 32 for cutting and a pilot hole 33 so as to be engageable with a punch for cutting and a pilot guide (both not shown).
The workpiece 2 is pitch-fed in the direction of the arrow. Next, reference numeral 34 denotes a material guide, which is embedded in the die 31 so as to be vertically movable, and is formed so as to be constantly urged upward with a spring 35 interposed at the lower end. 36 is a set screw.

With the above configuration, when the punch (not shown) descends, the pilot guide engages with the pilot hole 33 to position the workpiece 2, and the punch enters the slit 32 of the die 31. An arc-shaped cut 4 shown in FIG. In this case, since the material guide 34 is pushed down by the lower surface of the punch, the workpiece 2 is allowed to adhere to the surface of the die 31. Although the punch rises after the completion of the processing, the processing often causes the workpiece 2 to adhere to the surface of the die 31 due to the processing. In such a state, the workpiece 2 cannot be pitch-fed, so a material guide 34 is provided to avoid this. That is, as the punch rises, the material guide 34 rises due to the repulsive force of the spring 35, and floats the workpiece 2 a little distance from the surface of the die 31 as shown in FIG. When feeding the workpiece 2 at the pitch, the groove 37 serves as a guide, and the meandering of the workpiece 2 can be prevented.

In the above structure, four material guides 34 are provided in the die 31 as shown in FIGS. Therefore, there is a problem that the processing of the die 31 is extremely complicated. That is, since the die 31 is generally formed of a hard material such as tool steel, it takes a long time to form a hole for embedding the material guide 34. Further, since the pilot hole 33 is provided at the place where the material guide 34 is installed, the selection or adjustment of both places is complicated. Further, the material guide 34 has a function of preventing the workpiece 2 from floating and meandering.
Must be on the edge of the Therefore, workpiece 2
Cannot be applied to the workpieces having different widths, and it is necessary to provide the workpieces 2 individually in accordance with the widths and thicknesses of the workpieces 2, and there is a problem that compatibility is lacking.

An object of the present invention is to solve the above-mentioned problems and to provide a progressive feeding apparatus which can be easily adjusted even if the width dimension and / or thickness dimension of a workpiece is changed and has compatibility. And

[0016]

In order to achieve the above-mentioned object, the present invention provides a plurality of processing units each including a cassette having a plurality of processing means which is detachably mounted on a main body, and a plurality of processing units. Are arranged at intervals of mP (m is an arbitrary positive integer, P is a feed pitch of the work material) in the feed direction of the work material, and the plurality of processes are performed with respect to the pitch feed of the work material. In a progressive feeding apparatus configured to sequentially execute the processes by the plurality of processing units, a side face of the cassette has a groove having a dimension larger than a thickness dimension of the workpiece and can slide with the workpiece. A technical means is adopted in which a material guide engaging with the workpiece is provided in a direction perpendicular to the surface of the workpiece, and the workpiece is urged in a direction separating from the surface of the punch or die.

[0017]

According to the above configuration, it is not necessary to incorporate a material guide into the die or punch itself, so that the structure of the die or punch is simplified, and compatibility is given to the material guide. The effect that the range of applicable workpieces can be expanded can be expected.

[0018]

3 and 4 are an enlarged plan view of a main part and an enlarged side view of a main part, respectively, showing an embodiment of the present invention.
The same parts are indicated by the same reference numerals as in FIGS. In FIGS. 3 and 4, reference numeral 41 denotes a guide holder, which is fixed via a fixing screw 43 in a concave portion 42 provided on the side surface of the cassette 208. Reference numeral 44 denotes a dovetail groove, which engages a dovetail (not shown) provided on the guide holder 41 to thereby guide the guide holder 41 to the workpiece 2.
Is formed so as to be movable and adjustable in a direction perpendicular to the feed direction. Next, reference numeral 45 denotes a material guide, which is interposed in the guide holder 41 via a connecting stick 46 so as to be vertically slidable. A spring 47 is interposed at the lower end of the connecting stick 46 so as to urge the material guide 45 upward. 48 is a set screw.
The material guide 45 is provided with a groove 49 having a dimension larger than the thickness of the workpiece 2 on the side facing the workpiece 2 so as to be slidable with the workpiece 2.

The point that the pilot guide engages with the pilot hole 33 by the lowering of the punch, not shown, and the positioning and cutting of the workpiece 2 are performed as shown in FIGS. The same is true. In this case, the material guide 45 is pushed down by the lower surface of the punch (not shown), and the workpiece 2 comes into close contact with the surface of the die 31,
A predetermined cutting process is performed. After the processing is completed, the material guide 45 is raised via the connecting rod 46 by the bias of the spring 47 due to the rise of the punch, so that the workpiece 2 engaged with the groove 49 can be lifted from the surface of the die 31. . Therefore, the pitch feed of the workpiece 2 can be performed smoothly.

If the width of the workpiece 2 is changed, the guide holder 41 can be moved in a direction perpendicular to the feed direction of the workpiece 2 by loosening the fixing screw 43.
After adjusting the movement to the predetermined position, the guide holder 41 may be fixed by the fixing screw 43. When the thickness of the workpiece 2 is changed, the material guide 45 may be replaced, and in this case, it is not necessary to disassemble and remove the die 31. In short, the work of replacing or moving the material guide 45 or the guide holder 41 can all be performed in the space on the side surface of the cassette 208, so that the work of removing and disassembling the die 31 as shown in FIGS.

[0021]

Since the present invention has the above-described configuration and operation, the following effects can be obtained.

(1) Since the material guide is provided separately from the die or the punch, the structure of the die or the punch is simplified and the manufacture is facilitated. (2) Since the material guide is provided on the side surface of the cassette, the adjustment is extremely easy even if the width and / or thickness of the workpiece is changed.

(3) Standardization of the material guide is possible,
Compatibility can be imparted, and the range of applicable workpieces in an apparatus having the same configuration can be expanded.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing an example of a progressive feed processing apparatus as a premise of the present invention.

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

FIG. 3 is an enlarged plan view of a main part showing an embodiment of the present invention.

FIG. 4 is an enlarged side view of a main part of a partial cross section showing an embodiment of the present invention.

FIG. 5 is an enlarged plan view of a main part of the processing unit in FIG. 2;

FIG. 6 is a side view of a main part of the processing unit including a cross section taken along line AA in FIG. 5;

[Explanation of symbols]

100, 200, 300, 400, 500 Processing unit 41 Guide holder 45 Material guide

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B30B 13/00 B21D 43/00 B21D 45/04

Claims (1)

(57) [Claims] 1. A plurality of processing units each having a cassette provided with a plurality of processing means detachably provided on a main body, and a plurality of processing units corresponding to a plurality of processing steps, the mP (m
Is an arbitrary positive integer, and P is disposed at intervals of the workpiece feed pitch) so that the plurality of processing steps are sequentially performed by the plurality of processing units for the pitch feed of the workpiece. In the progressive feeding apparatus thus configured, a material guide which has a groove having a dimension larger than the thickness of the workpiece and is slidably engaged with the workpiece at a side surface of the cassette is perpendicular to the surface of the workpiece. A progressive feeding apparatus characterized in that the workpiece is provided in such a direction as to urge the workpiece away from the surface of the punch or die.