Processing method for manufacturing teeth of cylindrical gears by turning

A tooth processing and turning technology, which is applied to components with teeth, belts/chains/gears, gear teeth, etc., can solve the problems of low processing efficiency, high cost, and low precision, and achieve high cutting efficiency and simple equipment manufacturing , high precision effect

Inactive Publication Date: 2010-07-21
TIANJIN DAXIN PRECISION MECHANICAL EQUIP
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Problems solved by technology

[0006] The purpose of this invention is to provide a new method of turning gears for cylindrical gears, which overcomes the low processing eff

Method used

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  • Processing method for manufacturing teeth of cylindrical gears by turning
  • Processing method for manufacturing teeth of cylindrical gears by turning
  • Processing method for manufacturing teeth of cylindrical gears by turning

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Embodiment Construction

[0022] The following will be described in detail in conjunction with accompanying drawings 1 and 2 . As shown in Figure 1, one of the gears is replaced with a gear-shaping tool whose tooth shape parameters match it. According to the principle of cross-axis helical gear meshing transmission, the workpiece and the tool are strictly in accordance with a pair of cross-axis helical gear transmission relationship. When the relative rotation is performed, the teeth can be continuously cut out on the workpiece, and then the workpiece can be moved along the axial direction to cut out the entire tooth width. This process involves two movements: the strictly proportional relative rotational movement of the tool and the workpiece to form the involute (generatrix), and the tooth width (conductor) formed by the movement of the workpiece along the axis. The various angles of the tool, such as rake angle and rear angle, are the same as ordinary gear shaping cutters.

[0023] As we all know, ...

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Abstract

The invention relates to a processing method for manufacturing the teeth of cylindrical gears by turning. According to the principle that the tooth profiles of two gears form a conjugate curve mutually when crossed helical gears are engaged and driven and the gears carry out relative slip along a tooth direction, a numerical control system technique is adopted to control a gear type cutter and a workpiece to be processed to rotate at high speed according to a strict speed ratio, the knife edge of the cutter carries out relative slip relative to the tooth direction of the workpiece so as to generate a cutting action, and the system also controls the workpiece to be fed along the axis for continuously processing the tooth widths of the gears. The invention has the advantages that a generation method is adopted, and the principle that the tooth profiles of the two gears form the conjugate curve mutually when the crossed helical gears are engaged and driven is utilized to process the tooth profiles of the gears. The processing process of the method is similar to a shaving principle, but the cutter adopts a gear-shaped pinion cutter, so that the processing efficiency is very high. The method has the greatest advantages of simple manufacture of the cutter, very high cutting efficiency, high accuracy and simple equipment manufacture. The method can replace gear shaping, gear hobbing and gear broaching at present and has very good market prospect. Practices prove that the technique reaches the international advanced level.

Description

technical field [0001] The invention belongs to mechanical processing methods, in particular to a method for turning cylindrical gears. technical background [0002] There are many methods for modern gear processing, including casting, hot rolling, stamping, die forging, powder metallurgy and cutting. The cutting method is the longest used at present. The process of machining gear tooth profile by cutting method is also varied, but in terms of its principle, it can be summarized into two types: profiling method and fan forming method. [0003] The profiling method includes milling method and broaching method. Among them, the milling method is widely used in the processing of small batches of external gears. Due to the discontinuous processing, the precision of the generally processed gears is low; due to the discontinuous processing, the production efficiency is low and it is not suitable for mass production. The broaching method is widely used in the processing of cylindr...

Claims

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Application Information

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IPC IPC(8): B23F5/12
Inventor 董红林李建军牛静娟
Owner TIANJIN DAXIN PRECISION MECHANICAL EQUIP
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