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Bicycle transmission supporting gear die

A technology for bicycles and gears, which is applied in the field of bicycle transmission gear molds. It can solve the problems of affecting the production efficiency of transmission gears, rough and unsightly surfaces, and increasing production costs, and achieve the effects of saving raw materials, unique and beautiful appearance, and cost savings.

Inactive Publication Date: 2017-09-05
扬州新乐新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Transmission gears are parts used in bicycles. The existing production methods of transmission gears require secondary processing after molding, and the surface is rough and unsightly, which greatly affects the production efficiency of transmission gears. In the secondary processing, the precision is low and the error is large, which also increases the production cost

Method used

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  • Bicycle transmission supporting gear die
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Embodiment Construction

[0011] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

[0012] like figure 1 and figure 2 A bicycle transmission gear mold as shown includes an upper punch 1, a middle die 2 and a lower punch 3, the upper punch 1 and the lower punch 2 are connected in the middle die 3, and a small punch is arranged between the upper punch 1 and the lower punch 2. The bevel gear 4, the upper punch 1 is clamped in the upper outer punch fitting by the upper friction plate 8 and the lower friction plate card 7, and the upper outer punch fitting includes the upper outer punch fitting 1 11 and the upper outer punch fitting 2 6, the upper outer punch The fitting is provided with an upper second punch 9, the upper second p...

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PUM

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Abstract

The invention relates to a mold for a bicycle transmission gear, which includes an upper punch, a middle die and a lower punch, the middle die adopts a hollow structure, the upper punch and the lower punch are connected in the middle die, and a small bevel gear is arranged between the upper punch and the lower punch , the upper punch is set in the upper outer punch fitting through the upper friction plate and the lower friction plate, and the upper outer punch fitting is provided with an upper second punch, which extends to the small bevel gear through the upper punch, and the lower second punch is set in the lower There are mandrels in the inner and lower sleeves of the second punch. The surface of the mold of the bicycle transmission gear stamped out by the mold is smooth, the appearance is unique and beautiful, and the machining precision of the mold is high, and there is no need for secondary processing of the ratchet head of the hand tool, which saves costs.

Description

technical field [0001] The invention relates to a mold, in particular to a bicycle transmission gear mold. Background technique [0002] The transmission gear is a component used in bicycles. The existing transmission gear production method requires secondary processing after molding, and the surface is rough and unsightly, which greatly affects the production efficiency of the transmission gear, and During the secondary processing, the precision is low and the error is large, which also increases the production cost. SUMMARY OF THE INVENTION [0003] The present invention aims to solve the above-mentioned defects, and provides a bicycle transmission gear mold that does not require secondary processing, has a smooth surface, and has a beautiful appearance. [0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve the technical problem is: a bicycle transmission gear mold, including an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/03B22F5/08
CPCB22F3/03B22F5/08B22F2003/033
Inventor 杜少锋
Owner 扬州新乐新材料有限公司
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