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Processing method for hard-tooth-surface big-modulus cylindrical rack

A technology of cylindrical gears and processing methods, which is applied to components with teeth, belts/chains/gears, worms, etc., which can solve the problems of complex operation, high cost, and long processing and circulation process of hard-toothed racks

Active Publication Date: 2018-04-24
CHONGQING GEARBOX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a processing method for large modulus cylindrical racks with hardened surfaces. , and limited by the problems of special heat treatment equipment and special gear grinding machines

Method used

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  • Processing method for hard-tooth-surface big-modulus cylindrical rack
  • Processing method for hard-tooth-surface big-modulus cylindrical rack
  • Processing method for hard-tooth-surface big-modulus cylindrical rack

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Embodiment Construction

[0035] The embodiment of the invention discloses a processing method of a large modulus cylindrical rack with a hardened tooth surface, so as to simplify the technological process and save the production cost.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] see Figure 1-Figure 3 , figure 1 It is a schematic flow chart of the processing method of the large modulus cylindrical rack with hard tooth surface according to a specific embodiment of the present invention; figure 2 It is a schematic diag...

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Abstract

The invention discloses a processing method for a hard-tooth-surface big-modulus cylindrical rack. The processing method comprises the following steps: S1: forging, according to the structure of the semicircle rack, performing the overall forging by using a blank corresponding to two racks; S2: tooth slotting, performing the tooth slotting to two sides of a forge piece; S3: destressing processing;S4: semi-finish-milling tooth surface, performing the half finish-milling tooth surface to two sides of the forge piece, wherein the working allowance is kept on the tooth surface; S5: carburizing and quenching; S6: semi-finish-milling between two racks; S7: destressing processing; S8: finish-milling between two racks, enabling two racks to be separated; S9: finish turning; S10: external grinding, finishing a product at the end face; and S11: finish-milling tooth surface, finishing a product at the tooth surface. The processing of the hard-tooth-surface big-modulus cylindrical rack is realized by the above technology. The uncontrollability of the cylindrical asymmetrical surface heat treatment deformation is overcome, and a special heat treatment device and a special gear grinding machineare not needed, so the processing is more simple and economic.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, and more specifically, relates to a processing method of a large modulus cylindrical rack with a hard tooth surface. Background technique [0002] A rack is a special gear with teeth distributed on a bar-shaped body. Racks are also divided into straight toothed racks and helical toothed racks, which are paired with straight toothed cylindrical gears and helical toothed cylindrical gears respectively; the tooth profile of the rack is a straight line instead of an involute (for the tooth surface, it is a plane) , which is equivalent to a cylindrical gear with an infinite pitch circle radius. The processing methods of racks generally include: (1) gear hobbing (2) gear shaping (3) gear shaving (4) gear grinding (5) gear honing. [0003] Most traditional racks have soft tooth surfaces, which are easier to process and control deformation than hard tooth surfaces. However, the contact f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F13/00B23P15/14
CPCB23F13/00B23P15/14
Inventor 袁梅冉贞德胡昭南靳静力刘强姚雨辰汤静
Owner CHONGQING GEARBOX
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