CN210280419U - Die structure with filleted corners on front and back surfaces - Google Patents

Abstract

The utility model discloses a die structure of positive and negative radius angle, including upper die base and die holder, set up the cope match-plate pattern on the upper die base, set up lower bolster, its characterized in that on the die holder: an upper die insert block is embedded in the upper die plate, an upper pressing fillet structure is formed in the upper die insert block in a copying mode according to the front side of the appearance of the part to be processed, a lower die insert block is embedded in the lower die plate, and a lower pressing fillet structure is formed in the lower die insert block in a copying mode according to the back side of the appearance of the part to be processed; this radius angle mould is the structure of positive and negative while radius angle, and it has solved prior art in the process many, manufacturing cost is high, the accurate poor problem of inefficiency and radius angle.

Description

Die structure with filleted corners on front and back surfaces

Technical Field

The utility model relates to a cold punching press mould especially relates to a die structure of positive and negative radius angle.

Background

As shown in the attached figure 1, the part has the material thickness t =1.5mm, is produced in large batch, has high surface requirement and no burr, and requires that the two surfaces of the inner outline have round corners not less than R0.25.

After ordinary blanking in cold stamping, the precision and the section quality of a workpiece cannot be very high, as shown in fig. 2, the workpiece is in an ordinary stamping cutting surface state (a fillet belt, b bright belt, c fracture belt and d burr belt), when the workpiece material thickness is thin (T <2 mm), the fillet belt is very small (a < T > 10%), and the drawing requirements cannot be met.

The traditional process comprises the following steps: blanking, pressing a fillet 1, pressing a fillet 2, and bending and forming.

The traditional forming process has the following defects: the process is multiple, the production cost is high, the production efficiency is very low, and the normal production requirement cannot be met.

Disclosure of Invention

To the problem that exists, the utility model aims at providing a die structure of positive and negative radius angle, this radius angle mould is the structure of positive and negative while radius angle, and it has solved prior art in the process many, and manufacturing cost is high, the problem of inefficiency and radius angle accuracy difference.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a mould structure of positive and negative radius angle, includes upper die base and die holder, set up the cope match-plate pattern on the upper die base, set up the lower bolster on the die holder, it has last mould income piece to inlay in the cope match-plate pattern, it has last round angle structure according to the positive contour machining of waiting to process the part appearance to go up to go into the piece, it has lower mould income piece to inlay in the lower bolster, the lower mould is gone into and is had round angle structure according to the reverse side contour machining of waiting to process the part appearance on the piece.

Preferably, the upper die base is connected with an upper limiting column at the lower part, the lower die base is connected with a lower limiting column at the upper part, and the lower limiting column and the upper limiting column act together until the upper limiting column and the lower limiting column are attached to enable the punch to reach a bottom dead center.

Preferably, an inner guide post is further arranged between the upper template and the lower template.

Preferably, the upper fillet pressing structure and the lower fillet pressing structure respectively comprise a top fillet and a root fillet, the top fillet is in smooth transition with the root fillet, and the top fillet is located at the bottom edge of the center of the upper die insert or the side angle of the top edge of the center of the lower die insert and used for guiding.

Preferably, the root fillet is R0.5-0.6 mm, and the top fillet is R0.1mm.

Preferably, the clearance between the upper die insert block and the lower die insert block is 0.2 mm.

The utility model has the advantages that: compared with the prior art, the utility model discloses an improvement part lies in, becomes one step of process by the multistep process, and the product is accomplished in a location, the reduction of process for the mould becomes simple, productivity ratio linear rising.

The utility model has the advantages of reasonable design, the cost of manufacture of mould is low, through the utility model discloses a mould can reach the purpose of adjusting reverse side fillet simultaneously well, and the practicality is strong.

Drawings

Fig. 1 is a part view.

Fig. 2 is a general blanking sectional view.

Figure 3 is the utility model discloses positive and negative radius angle mould structure local map.

Figure 4 is the utility model discloses the schematic diagram before positive and negative radius angle mould punching press.

Fig. 5 is the schematic view of the die for chamfering the front and back sides during stamping.

Fig. 5a is an enlarged view of a portion a in fig. 5.

Fig. 6 is a schematic diagram of the upper die insert of the present invention.

Fig. 7 is a schematic view of the lower mold insert of the present invention.

Wherein: 1-an upper die holder, 2-an upper template, 3-an inner guide column, 4-an upper die insert, 5-a part, 6-a lower die insert, 7-a lower template, 8-a lower die holder, 9-an upper limiting column and 10-a lower limiting column;

in fig. 3, a1 is a single-side gap between the outer sides of the part and the lower mold insert, a2 is a single-side gap between the inner sides of the part and the lower mold insert, B1 is the size of the root fillet of the upper mold insert, B2 is the size of the root fillet of the lower mold insert, C is the size of the top fillet of the upper mold insert or the lower mold insert, and D is a gap between the upper mold insert and the lower mold insert.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the technical solution of the present invention with reference to the accompanying drawings and embodiments.

Referring to the die structure with the rounded corners on the front and back sides shown in the attached drawings 1-7 and 5a, the die structure with the rounded corners on the front and back sides comprises an upper die base 1 and a lower die base 8, wherein an upper die plate 2 is arranged on the upper die base 1, a lower die plate 7 is arranged on the lower die base 8, an upper die insert block 4 is embedded in the upper die plate 2, an upper pressure rounded corner structure is formed on the upper die insert block 4 according to the front profiling machining of the appearance of the part 5 to be machined, a lower die insert block 6 is embedded in the lower die plate 7, and a lower pressure rounded corner structure is formed on the lower die insert block 6 according to the back profiling machining of the appearance of the part 5 to be machined.

Further, an upper limiting column 9 is connected below the upper die holder 1, a lower limiting column 10 is connected above the lower die holder 8, and the lower limiting column 10 and the upper limiting column 9 act together until the upper limiting column and the lower limiting column are attached to enable the punch to reach a bottom dead center.

Further, an inner guide post 3 is arranged between the upper template 2 and the lower template 7.

It is special, go up and press fillet structure down and all include top fillet and root fillet, top fillet and root fillet smooth transition, the top fillet is located the side angle department that goes up 4 center departments base of mould income piece or 6 center departments topside of lower mould income piece for the direction, the root fillet is R0.5~0.6mm, and the top fillet is R0.1mm, go up mould income piece 4 with clearance between the piece 6 is 0.2mm down.

Examples

As shown in the figures, the die structure with the rounded corners on the front and back sides comprises an upper die base 1, an upper die plate 2, a lower die plate 7 and a lower die base 8 which are sequentially connected from top to bottom; the lower part of the upper die holder 1 is connected with an upper die plate 2 and an upper limiting column 9 through screws to form an upper die of the die; an upper die insert block 4 is embedded in the upper die plate 2, an inner guide post 3 is also arranged between the upper die plate 2 and the lower die plate 7, the inner guide post 3 is fixed in the upper die plate 2 and penetrates through the lower die plate 7 and the lower die seat 8, and the upper die slides up and down under the guide of the inner guide post 3; the lower template 7 is fixed on the lower die base 8 through screws, and a lower die insert block 6 is embedded in the lower template 7; a lower limiting column 10 is further fixed on the lower die base 8, and the lower limiting column 10 and the upper limiting column 9 act together to play a limiting role when the die is completely closed so as to prevent a product and the die from being damaged in the stamping production; the mold has the advantages of simple structure, easy manufacture and lower cost.

As shown in fig. 3, the part 5 is positioned in the shape, the lower die insert block 6 is processed according to the shape profiling of the part 5, and the unilateral gap a1 is 0.08-0.10 mm, namely the unilateral gap between the part 5 and the outer side of the lower die insert block 6; the round corner pressing part of the upper and lower die insert 6 is 0.05mm according to the profile modeling unilateral clearance A2 of the inner hole of the part 5, and the unilateral clearance between the part 5 and the inner side of the lower die insert 6; the size C of a top fillet is R0.1mm, the guiding and positioning functions are started, and the size B1 of a root fillet of the upper die insert 4 is R0.5mm; the root part round angle B2 of the lower die insert 6 is R0.6mm which is larger than R0.25mm required by a drawing; when the upper and lower dies are closed, the clearance between the upper and lower die inlet blocks 6 is 0.2 mm. The main process of the structure is as follows: the part 5 is positioned in the shape, firstly, the part 5 is placed into the lower die insert 6 for positioning, then the upper die insert 4 moves downwards along with the upper die, the upper die insert 6 and the lower die insert 6 are completely attached to the part 5, and the part 5 is extruded and molded by using root fillets of the upper die insert 6 and the lower die insert 6, so that the shape of the required part 5 is obtained.

The use process of the die is as follows:

1. part 5 is placed in the lower mold insert 6 location.

2. Then the last mould part of mould is downward motion under the effect of punch press, leads through inner guide pillar 3, goes up mould income piece 4 contact part 5, goes up mould income piece 4 and goes up the combined action of mould income piece 6 with the lower mould and extrude rounding off to part 5, and the rounding off is accomplished until last stopper post 9 and lower stopper post 10 laminating (namely punch to bottom dead center).

3. The press then moves upward to top dead center and the part 55 is removed and a single press is completed.

The die structure is proved to be feasible by practice, thereby greatly improving the productivity of a company and reducing the cost.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a mould structure of positive and negative radius angle, includes upper die base and die holder, set up the cope match-plate pattern on the upper die base, set up the lower bolster on the die holder, its characterized in that: the utility model discloses a processing mould, including cope match-plate pattern, lower bolster embedded have the mould go into the piece, go up the mould go into the piece and have according to the positive contour machining of waiting to process the part appearance and press the fillet structure, the embedded piece of having the lower mould of having in the lower bolster has the fillet structure of pushing down according to the reverse side contour machining of waiting to process the part appearance on the piece is gone into to the lower mould.

2. The die structure with rounded corners on front and back sides according to claim 1, wherein: the upper die base is connected with an upper limiting column below, the lower die base is connected with a lower limiting column above, and the lower limiting column and the upper limiting column act together until the upper limiting column and the lower limiting column are attached to enable the punch to reach a bottom dead center.

3. The die structure with rounded corners on front and back sides according to claim 1, wherein: an inner guide post is arranged between the upper template and the lower template.

4. The die structure with rounded corners on front and back sides according to claim 1, wherein: go up and press fillet structure down and all include top fillet and root fillet, top fillet and root fillet smooth transition, and the top fillet is located the side angle department that goes into a piece center department base or lower mould income piece center department topside for the direction.

5. The die structure with rounded corners on front and back sides as claimed in claim 4, wherein: the root fillet is R0.5-0.6 mm, and the top fillet is R0.1mm.

6. The die structure with rounded corners on both front and back sides as claimed in any one of claims 1 to 5, wherein: the clearance between the upper die insert block and the lower die insert block is 0.2 mm.

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