CN217990823U - Gear shift operation block coining forming die structure - Google Patents

Abstract

The utility model discloses a gear shift operation piece coining moulded die structure, including pairing the lower mould and the last mould that set up, be equipped with the die cavity with gear shift operation piece appearance adaptation on lower mould and the last mould, the die cavity is the symmetry setting of even number, the die cavity all is equipped with ease charge level at the open position that corresponds lower mould and last mould, it still all is equipped with spacing face all around still to lie in ease charge level on lower mould and the last mould, after the die cavity is put into to the gear shift operation piece before the coining, first clearance has between the ease charge level, second clearance has between the spacing face, the coining shaping of a plurality of products can be accomplished to one time, high production efficiency.

Description

Gear shift operation block coining forming die structure

Technical Field

The utility model relates to a coining mould technical field specifically is a gear shift operation piece coining moulded die structure.

Background

The gear shifting operation block is one of key parts used on a vehicle gearbox, is usually connected with a gear shifting shaft, pushes a shifting block corresponding to a gear to move under the pushing of the gear shifting operation rod, drives a corresponding shifting fork to shift a synchronous gear sleeve to complete gear shifting, usually adopts a forging process to produce a forging blank (shown in figure 4), then adopts a precision forging finished product to be precisely pressed through a precision pressing process, and finally obtains a final finished product through mechanical processing and heat treatment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear shift operation piece coining moulded die structure to solve the problem among the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a gear shift operation block coining forming die structure comprises a lower die 1 and an upper die 2 which are arranged in a matched mode, wherein cavities 4 matched with the shape of the gear shift operation block 3 are formed in the lower die 1 and the upper die 2, the cavities 4 are symmetrically arranged in an even number, material escaping surfaces 7 are arranged in the opening positions of the cavities 4 corresponding to the lower die 1 and the upper die 2, limiting surfaces 9 are arranged on the lower die 1 and the upper die 2 around the material escaping surfaces 7, after the gear shift operation block 3 before coining is placed into the cavities 4, first gaps 8 are formed between the material escaping surfaces 7, and second gaps 10 are formed between the limiting surfaces 9.

Further, the first gap 8 is larger than the second gap 10.

Furthermore, a clearance groove 11 is arranged between the material escape surface 7 and the limiting surface 9.

Further, the opening of the cavity 4 is connected with the material escaping surface 7 in an arc 401.

Further, four corners of the lower die 1 are provided with lock catch concave parts 5, and four corners of the upper die 2 are provided with lock catch convex parts 6 matched with the lock catch concave parts 5.

The utility model has the advantages that: the utility model provides a gear shift operation piece coining moulded die structure, the die cavity that has set up and gear shift operation piece appearance looks adaptation adopts the volume coining mode, bears the horizontal thrust that produces between upper die and lower die because gear shift operation piece forging misplaces when coining through setting up four groups of supporting hasp inner recesses and hasp protrusions, makes the die cavity of upper die and lower die keep adjusting well, can revise the dislocation that produces when the die forging to a certain extent; the die cavity adopts even number and symmetry setting, and each gear shift operation piece forging is opposite to the horizontal thrust that goes up mould and lower mould production during coining, and is balanced each other, is favorable to reducing the atress size of hasp indent portion and hasp bulge, is favorable to prolonging the mould life-span, guarantees coining shaping quality, once can accomplish the coining shaping of a plurality of products, and production efficiency is high.

Drawings

FIG. 1 is a exploded view of a gear shift operating block coining forming die structure of the present invention;

FIG. 2 is a longitudinal sectional view of the gear shift operating block coining molding die structure of the present invention;

FIG. 3 is a partial enlarged view of FIG. 2 at B;

FIG. 4 is a perspective view of the shift operating block;

fig. 5 is a schematic diagram of the horizontal thrust force generated by the shift operating block to the cavity during coining.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-5, a gear shift operation block coining molding die structure includes a lower die 1 and an upper die 2 which are arranged in pair, cavities 4 which are matched with the gear shift operation block 3 in shape are arranged on the lower die 1 and the upper die 2, the cavities 4 are an even number of cavities which are symmetrically arranged, concretely, the embodiment is four cavities which are symmetrically arranged, the cavities 4 are provided with material escape surfaces 7 at the opening positions corresponding to the lower die 1 and the upper die 2, the lower die 1 and the upper die 2 are also provided with limiting surfaces 9 around the material escape surfaces 7, when the gear shift operation block 3 before coining is placed in the cavity 4, a first gap 8 is formed between the material escape surfaces 7, and a second gap 10 is formed between the limiting surfaces 9; and the first gap 8 is larger than the second gap 10; preferably, four corners of the lower die 1 are provided with latch concave parts 5, and four corners of the upper die 2 are provided with latch convex parts 6 matched with the latch concave parts 5.

When the device is used, the lower die 1 and the upper die 2 are respectively arranged on a workbench and an upper die holder of a hydraulic machine, the upper die holder is arranged on a sliding block of the hydraulic machine, then a forged piece of the gear shift operation block 3 is placed into the cavity 4, the hydraulic machine is operated to carry out die assembly and coining, when the coining is finished, the limiting surfaces 9 of the lower die 1 and the upper die 2 are contacted, namely the second gap 10 is zero, the limiting is carried out to avoid over-head pressing so as to ensure the quality of a product after the coining, according to the different thicknesses of the forged piece of the gear shift operation block 3, the flash is allowed to be generated in the second gap 8, and the product can be taken out of the cavity after the coining is finished, so that the device is convenient to operate and has good practicability; thus, the gear shift operation block coining die structure of the technical scheme is provided with a cavity 4 matched with the shape of a gear shift operation block 3 in a volume coining mode, four groups of matched lock catch inner concave parts 5 and lock catch convex parts 6 are arranged to bear horizontal thrust generated between an upper die 2 and a lower die 1 due to offset of a forging of the gear shift operation block 3 during coining, so that the cavity 4 of the upper die 2 and the cavity 4 of the lower die 1 are kept aligned, and in combination with a figure 5, the principle of correcting offset generated during die forging of the gear shift operation block 3 by the gear shift operation block coining die structure of the technical scheme is that the thickness of the gear shift operation block 3 is reduced during coining, the circumferential dimension of the gear shift operation block is increased, and due to the offset D on the gear shift operation block 3, after the gear shifting operation block 3 is placed into the lower die 1 and the upper die 2 is closed in a downward mode, a gap is formed between a surface which is deviated into the gear shifting operation block 3 and a corresponding inner wall surface of a cavity 4, otherwise, the other opposite surface is abutted to an inner wall surface corresponding to the cavity 4, and in the process that the circumferential size of the gear shifting operation block 3 is increased during finish pressing, materials with the minimum resistance effect of metal flowing preferentially flow to the gap to fill the cavity, while the surface which is abutted to the inner wall surface corresponding to the cavity 4 is extruded under the action of an arc 401, and the value of the offset D is reduced under the combined action of the two, so that the offset generated by the gear shifting operation block 3 during die forging can be corrected to a certain degree, and the quality of a finished product is improved; the cavities 4 are symmetrically arranged in an even number, the horizontal thrust generated by the forged piece of each gear shift operation block 3 to the upper die 2 and the lower die 1 during the coining is opposite and balanced, and mainly referring to fig. 5, the horizontal thrust generated by the forged piece of the left gear shift operation block 3 to the cavities of the upper die 2 and the lower die 1 during the coining is respectively F3 and F1, and the horizontal thrust generated by the forged piece of the right gear shift operation block 3 to the cavities of the upper die 2 and the lower die 1 is respectively F4 and F2, wherein the directions of F1 and F2 are opposite, and the directions of F3 and F4 are opposite and can be mutually offset, so that although the offset amount D of the forged piece of each gear shift operation block 3 is different, the F1, F2, F3 and F4 are different, the horizontal thrust can be partially offset by each other through the even number of symmetrically arranged cavities 4, which are beneficial to reducing the stress of the concave part 5 and the convex part 6 of the lock catch, prolonging the service life of the die and ensuring the coining forming quality.

Further preferably, clearance grooves 11 are formed between the material escaping surface 7 and the limiting surface 9, so that the contact area of the limiting surface 9 is reduced, the accurate pressing is facilitated, and the accuracy of the gear shifting operation block 3 after the accurate pressing is ensured.

Further preferably, the opening of the cavity 4 is connected with the material escape surface 7 in an arc 401, so that the gear shift operation block 3 is prevented from being bitten by the opening surface of the cavity 4 during mold closing, and the product quality is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it should be understood that the terms "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a gear shift operation piece coining mould structure which characterized in that: the gear shifting device is characterized by comprising a lower die (1) and an upper die (2) which are arranged in a matched mode, wherein cavities (4) matched with the gear shifting operation block (3) in shape are formed in the lower die (1) and the upper die (2), the cavities (4) are symmetrically arranged in an even number, material escape surfaces (7) are arranged in the cavities (4) corresponding to the opening positions of the lower die (1) and the upper die (2), limiting surfaces (9) are arranged on the lower die (1) and the upper die (2) and located around the material escape surfaces (7), after the gear shifting operation block (3) before fine pressing is placed into the cavities (4), a first gap (8) is formed between the material escape surfaces (7), and a second gap (10) is formed between the limiting surfaces (9).

2. The shift operating block coining molding die structure according to claim 1, wherein: the first gap (8) is larger than the second gap (10).

3. The shift operating block coining molding die structure according to claim 2, wherein: and a clearance groove (11) is formed between the material escape surface (7) and the limiting surface (9).

4. The shift operating block coining molding die structure according to claim 3, wherein: the opening of the cavity (4) is connected with the material escaping surface (7) in an arc (401).

5. The shift operating block coining molding die structure according to claim 4, wherein: the four corners of the lower die (1) are provided with lock catch concave parts (5), and the four corners of the upper die (2) are provided with lock catch convex parts (6) matched with the lock catch concave parts (5).

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