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Designing and manufacturing method of flexible wheel of harmonic reducer

A technology of harmonic reducer and manufacturing method, applied in the direction of mechanical equipment, components with teeth, belt/chain/gear, etc., can solve the problem of low service life

Inactive Publication Date: 2018-04-24
WANSHSIN SEIKOU HUNAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of current flexsplines is usually based on empirical formulas, and the service life of existing flexsplines will be low

Method used

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  • Designing and manufacturing method of flexible wheel of harmonic reducer
  • Designing and manufacturing method of flexible wheel of harmonic reducer
  • Designing and manufacturing method of flexible wheel of harmonic reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] After analyzing the sensitivity of flexspline structure parameters to fatigue life, Table 1 can be obtained

[0019] Table 1 Sensitivity value of flexspline fatigue life to each parameter

[0020]

[0021] Among them, L is the length of the flexspline tube, R is the excessive fillet of the rear end surface of the tooth and the tube wall, D is the diameter of the inner circle of the tube wall, B is the tooth width of the external tooth, S is the thickness of the tube wall, T is the load torque, and E is the material The modulus of elasticity, μ is the Poisson's ratio of the material. It can be seen from Table 1 that the sensitivity of the fatigue life of the harmonic gear flexspline to the change of each parameter in descending order is: S, B, L, R, E, D, T, μ. It can be clearly found that the structural parameters of the flexspline have a great influence on its fatigue life, especially the influence of S, B, L and R fatigue life is particularly obvious, and should b...

Embodiment 2

[0028] A method for making a harmonic reducer, the method for making a flexwheel comprises the steps of: adding materials to a ball mill for grinding in proportion, the materials include 94.3 parts by weight of iron (phosphorus content is less than 0.01%), 5 parts by weight of graphene , the silicon of 2 parts by weight, the manganese of 0.3 parts by weight, the nickel of 0.065 parts by weight; The sulfur of 0.05 parts by weight, the chromium of 1.6 parts by weight, the copper of 0.17 parts by weight, the aluminum of 0.07 parts by weight; Add the material after grinding In a furnace filled with inert gas, heat and melt to form an alloy solution. When heating, mix and alternately heat up by 6°C per minute and 4°C per minute until fully melted, then pour the alloy solution into the flexible spline mold to cool and form That is to say, the flexible tire is prepared, and the flexible tire is heated to 600°C for 3 hours under the protection of nitrogen, then cooled to 260°C for 0.5 ...

Embodiment 3

[0030] On the basis of embodiment 2, the preparation method of flexible spline comprises the steps: according to proportion, material is added ball mill and grinds, and described material comprises the iron of 96 weight parts (phosphorus content is less than 0.01%), the graphene of 1 weight part, The silicon of 1.5 parts by weight, the manganese of 0.2 parts by weight, the nickel of 0.044 parts by weight; The sulfur of 0.03 parts by weight, the chromium of 1.2 parts by weight, the copper of 0.1 parts by weight, the aluminum of 0.02 parts by weight; In an inert gas furnace, heat and melt to form an alloy solution. When heating, mix and alternately heat up by 6°C per minute and 4°C per minute until fully melted. To obtain a soft wheel, heat the soft wheel to 630°C for 3 hours under the protection of nitrogen, then cool to 280°C and keep it for 1 hour, then keep it in an alkaline solution with a temperature of 90°C and a pH of 9 for 1 hour, wash and dry dry; and then carry out ho...

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Abstract

The invention discloses a designing and manufacturing method of a flexible wheel of a harmonic reducer. The designing and manufacturing method is characterized in that the flexible wheel comprises a barrel wall; an outer tooth is formed at the outer end of the barrel wall; a transition circular bead is arranged between the rear end face of the outer tooth and the barrel wall, the wall thickness Sof the barrel wall is (0.005-0.01)*D2 / L, and the length L of the barrel wall (1) is (0.7-0.8)*D; the tooth width B of the outer tooth (2) is (0.15-0.17)*D2 / L; the radius R of the transition circular bead is (0.04-0.055)*D2 / L; and D expresses the inner diameter of the flexible wheel. According to the designing and manufacturing method, the manufacturing process of the flexible wheel is improved, the expansion factor of the flexible wheel is reduced, and the transmission precision, hardness and tensile strength of the flexible wheel are improved; and in addition, the shape of the flexible wheelis improved, and the service life of the reducer is prolonged.

Description

technical field [0001] The invention belongs to the field of reducers, in particular to a method for designing and manufacturing a flexible spline of a harmonic reducer. Background technique [0002] Harmonic reducers have the advantages of small size, light weight, stable transmission, no impact, no noise, high motion precision, large transmission ratio, high load capacity, etc., and are widely used in electronics, aerospace, robotics and other industries. The harmonic reducer includes a rigid gear (rigid wheel) with an inner ring gear, a flexible gear (flex spline) with an outer ring gear and a wave generator. Among them, the flexspline is an important part of the harmonic generator, and its shape, structure and manufacturing materials affect the service life of the harmonic reducer. The design of current flexsplines is usually based on empirical formulas, and the service life of existing flexsplines will be low at that time. Contents of the invention [0003] In order...

Claims

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Application Information

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IPC IPC(8): F16H49/00F16H55/08
CPCF16H49/001F16H55/0833
Inventor 周清泉
Owner WANSHSIN SEIKOU HUNAN CO LTD
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