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Rack structure

A technology of racks and teeth, applied in the field of rack structure, can solve the problems of drop, the boundary between soft and hard materials cannot be quickly defined, and the grinding process of grinding personnel is troubled.

Inactive Publication Date: 2016-10-05
APEX DYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the soft and hard areas are required to be ground separately, how to divide the boundary between the soft and hard areas on the same grinding plane? It will cause a lot of trouble for the grinder during the grinding process. In severe cases, it will cause a drop with different grinding heights on the same plane, and the boundary line between grinding soft and hard materials cannot be quickly defined.

Method used

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Examples

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Embodiment Construction

[0018] Hereinafter, please refer to the related drawings to further describe the rack structure embodiments of the present invention. In order to facilitate the understanding of the embodiments of the present invention, the same elements below are marked with the same symbols for description.

[0019] see Figures 1 to 4 As shown, the rack of the present invention includes a tooth portion 12 and a base portion 14 that extend axially and are arranged up and down, wherein;

[0020] The above-mentioned tooth portion 12 has a plurality of tooth bodies 122 and tooth slots 124 which are alternately arranged in sequence. And the long end faces on both sides of the tooth portion 12 along the axial extension direction are symmetrically formed with a θ angle from the base portion 14 to the top of the tooth portion 12. A slope 16 is formed so that each slope 16 and the base portion 14 are adjacent to each other. The difference (angle) naturally forms a transition line or dividing line ...

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PUM

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Abstract

The invention relates to a rack structure which comprises a tooth part and a base part. The tooth part and the base part extend in the axial direction and are arranged up and down. The tooth part is provided with a plurality of teeth and toothed grooves which are sequentially arranged alternately; the long end faces of the two sides of the tooth part in the axial extending direction symmetrically form proper slopes from the base part to the top end of the tooth part; and a boundary is formed at the adjoining position of each slope and the base part in the axial extending direction of the base part due to the potential difference (angle). By the adoption of the structural design and cooperation of a two-section type grinding mode, the hardened tooth part and the base part which is not hardened are improved, so that the rack has the different characteristics of softness and hardness, and the problems that in the simultaneous grinding process, the ground surfaces are in a wavy shape, the loss of a grinding wheel is large, and the service life of the grinding wheel is short are solved.

Description

technical field [0001] The invention relates to the technical field of mechanical parts, in particular to a rack structure which can improve the precision of rack finishing and improve the service life and visual benefit of grinding wheels. Background technique [0002] The structure of the rack 9 is known, such as Figure 5 , 6 As shown, an axially extending rectangular steel material is processed to form a base portion 92 and a tooth portion 94 formed on the base portion 92 . Wherein, the tooth portion 94 has a plurality of protruding teeth 944 arranged at predetermined intervals. In order to be able to withstand the stress interacting with other gear components, the processed tooth portion 94 must provide a comparable hardness. Therefore, further hardening treatment and grinding and finishing processing are required to form the finished product of the precision rack 9 . [0003] After the above hardening treatment, the base portion 92 and the tooth portion 94 of the rac...

Claims

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Application Information

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IPC IPC(8): F16H55/26F16H55/08
Inventor 张重兴
Owner APEX DYNAMICS