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Method for forming splined connection type dual gears

A duplex gear and forming method technology, which is applied in the field of forming spline-connected duplex gears, can solve the problem of low transmission precision of duplex gears and achieve a firm connection

Inactive Publication Date: 2014-03-05
XIAN KUNLUN IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the shortcomings of the low precision of the double gear transmission formed by the existing double gear forming method

Method used

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  • Method for forming splined connection type dual gears
  • Method for forming splined connection type dual gears
  • Method for forming splined connection type dual gears

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] refer to figure 1 . The specific steps of the forming method of the spline-connected duplex gear of the present invention are as follows:

[0030] The double-linked gear adopts a split-type hot-pressed spline connection structure. The cooperation between the inner spline and the outer spline adopts an interference fit, and the interference is 0.015mm to 0.02mm. The forming method is as follows:

[0031] The first step: processing the small end gear 1.

[0032] Carry out tooth making and grinding on the small end gear 1, and process the external spline.

[0033] Step 2: Machining big end gear 3 (but not gearing).

[0034] Process the outer circle of the big end gear 3 and make the inner spline.

[0035] Step 3: Preheat Big End Gear 3.

[0036] Put the big-end gear 3 (not geared) into the oil furnace. The oil temperature of the oil furnace is controlled between 180°C and 260°C, and the holding time is 2 to 3 hours.

[0037] Step Four: Assembly.

[0038] Take the b...

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Abstract

The invention discloses a method for forming splined connection type dual gears. The method is used for solving the technical problem of low transmission precision of dual gears formed by an existing method for forming the dual gears. The technical scheme includes that the method comprises manufacturing and grinding teeth of a small-end gear and machining an external spline; machining an outer circle of a large-end gear, and manufacturing an internal spline; heating the large-end gear in an oil furnace and keeping the temperature of the oil furnace unchanged; taking out the large-end gear from the oil furnace, instantly sleeving the internal spline of the large-end gear onto the external spline of the small-end gear to form an assembly, enabling the internal spline to be in interference fit with the external spline and cooling the assembly in a cooling oil groove; manufacturing teeth of the large-end gear on the basis of a basic hole of the small-end gear after the assembly is cooled, and performing hobbing and tooth grinding machining on the large-end gear. The method has the advantages that the splined connection type dual gears are subjected to hot-press, the internal spline on the large-end gear is in interference fit with the external spline on the small-end gear, accordingly, the dual gears can be firmly connected with each other, and the transmission precision of the dual gears is improved to be higher than a fifth level from the seventh level in the prior art.

Description

technical field [0001] The invention relates to a forming method of a dual gear, in particular to a forming method of a spline-connected dual gear. Background technique [0002] There are two kinds of molding methods for existing double gears, one is integral molding, and the other is split molding. [0003] 1. The forming method of the integral double gear. [0004] Integral duplex gear structure see figure 2 , and its forming method is as follows: [0005] A. Turning the outer circle of the big end gear 3 and the small end gear 1 of the duplex gear; [0006] B. The big end gear 3 is first processed with a gear hobbing machine, and whether it is ground with a gear grinding machine depending on the situation; [0007] C. The small end gear 1 is processed by a gear hobbing machine or a gear shaping machine. Due to structural limitations, the small end gear cannot be ground. [0008] Integral duplex gears are usually used in small modulus gears or gears with relatively s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14B23P11/025
Inventor 张中华李伟郭新华曹海基刘俊展南腾飞侯峰涛康少博辛腾磊张贺晨
Owner XIAN KUNLUN IND GRP
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