A Machining Method of Involute Lines of Gears with Large Modulus and Small Number of Teeth

A processing method and involute technology, applied in the field of gear processing, can solve the problems of high cost, unable to form batches, unable to guarantee the effective starting circle radius, etc., and achieve the effect of simple method and low manufacturing cost

CN102848159BInactive Publication Date: 2016-01-20重庆市华丰动力配件有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a processing method of an involute of a gear with large module and a few teeth. The method includes forging process; semi-finish turning processing: processing is performed on a lathe, and inner holes, addendum circles and datum end faces are finished during one clamping; hobbing processing: a standard hob is adopted for the hobbing processing, and a gear grinding allowance in a common normal line is provided; rough gear grinding processing: the whole gear is processed out according to dimensions, corresponding deep arcs are processed at tooth roots according to the common normal line allowance, and the diameter of a starting circle of the involute is measured; carburization quenching processing: carburization quenching is performed on teeth surfaces, non-seeping surfaces are subjected to coating protection; finish turning processing: processing is performed on the lathe, and the datum end faces and the inner holes are finished during one clamping; and gear grinding processing : gear grinding is performed on a gear grinding machine, and the diameter of the starting circle of the involute is measured. The processing method is simple, low in production cost and suitable for processing gears with large module, a few teeth and large negative addendum modification.
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Description

technical field

[0001] The invention relates to a gear machining method, in particular to a gear involute machining method with a large modulus and a small number of teeth. Background technique

[0002] Gear transmission is the most common mechanical transmission in modern machines. It is a main form of transmitting machine power and motion, and is an important basic part of mechanical products. In recent years, power transmission gears are developing in the direction of miniaturization, high speed, low noise and high reliability. In order to improve the load-carrying capacity of gear transmission, the design and manufacture technology of hard-toothed gears has attracted more and more attention.

[0003] The main processing procedures of general hard tooth surface gear parts are: forging-rough turning-flaw detection-pretreatment-semi-finished turning-flaw detection-hobbing-heat treatment-finish turning-grinding-flaw detection, etc. Gear cutting includes gear hobbing, milli...

Examples

Embodiment Construction

[0013] Now, the present invention will be described in further detail in conjunction with preferred embodiments. The basic structure of the present invention is illustrated only in a schematic manner, so that it only shows the constituents relevant to the present invention.

[0014] A method for processing the involute of a gear with a large modulus and a small number of teeth, comprising the following steps: 1. Forging processing; 2. Semi-finishing processing: processing on a vertical lathe, correcting the radial runout of the outer circle to be no more than 0.2, and the end face The runout is not greater than 0.2, the inner hole, the addendum circle, and the reference end surface are processed in one clamping. According to the completed end surface, the inner hole is clamped and aligned, and the rest is processed; 3. Hobbing processing: standard hobbing is used for hobbing processing Tool hobbing processing, positioning and clamping of the end face of the reference mark, the...