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60-degree crossed axis angle small-modulus straight bevel gear manufacturing method

The technology of a straight bevel gear and a manufacturing method is applied in the field of powder metallurgy products and can solve problems such as mold cracking

Inactive Publication Date: 2018-10-16
JIANDE WEIJIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of one-time molding of powder products of small modulus straight bevel pinions with 60-degree axial angle, and to provide a 60-degree machine that makes full use of the existing functions of the press, avoids mold cracking during production, and has a stable and efficient process. Degree axis intersection angle small modulus straight bevel gear and manufacturing method thereof

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  • 60-degree crossed axis angle small-modulus straight bevel gear manufacturing method
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Embodiment Construction

[0026] The technical solution of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0027] In this embodiment, a method for manufacturing a small-modulus straight bevel gear with a shaft angle of 60 degrees, the finished product specifications of the small-modulus straight bevel gear studied are: the shaft angle is 60 degrees, the transmission ratio is 15:18, and the indexing cone angle is 27 degree ±3° degree; the density requirement is ≥7.05g / cm3, the hardness is ≥67 HRA, the thickness of the infiltrated layer is between 0.2-1 mm, and the torque is ≥28.5 Nm.

[0028] The make method has the following:

[0029] 1. Electrode design, according to figure 1 Product-related parameters, build a 3D model, and simulate in the software. By changing the technical parameters, the satisfactory contact area of ​​the bevel gear in the working state is calculated through computer simulation. For ex...

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Abstract

The invention discloses a 60-degree crossed axis angle small-modulus straight bevel gear manufacturing method. A computer is used for simulation calculation of a contact area in a working state of a bevel gear; a solid is prepared through a finish carving machine; an assembly structure is checked to further optimize a simulation result to machine a mold; dispersion alloy powder is prepared according to the mass ratios of components of 4% of Ni, 0.5% of Mo, 0.5% of Cu, 0.2% of C and the balance of Fe; a blank is molded by adopting a mode of double female molds; the strong carburization is performed by sintering under the condition of 1120 DEG C / 35 min; and the quenching is performed in gear oil after cooling, insulation and homogenization. The bevel gear with a set taper angle cannot be formed through upward punching by a conventional mode; the once molding of products with square inner holes and such technical requirements as steps is achieved; such technical indexes as metallographicstructures and mechanical strength after conventional treatment and machining meet the design requirements; and the mirror effect on other similar products is achieved.

Description

technical field [0001] The invention relates to powder metallurgy product technology, in particular to a method for manufacturing straight bevel gears with small modulus of 60-degree axis angle. Background technique [0002] Existing powder products are formed by combining upper and lower dies and punches, and are completed by the cooperation of female dies. For example, the patent announcement number is CN103273678B, a kind of bi-directional pressing powder forming device designed for automatic demoulding, the upper mold frame is connected with the lower mold frame with guide pillars, and the lower mold frame is fixed on the bottom plate; the upper mold punch is connected with the upper mold connecting rod , the connecting rod of the upper die is connected with the first hydraulic cylinder; the lower die punch is fixed on the lower die frame; The springs are all set, and the female mold can float on the spring. The female mold is equipped with heating rods and thermocouple...

Claims

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Application Information

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IPC IPC(8): B22F5/08B22F1/00B22F3/02B22F3/10B22F3/24
CPCB22F3/02B22F3/1007B22F3/24B22F5/08B22F2003/248B22F2998/10B22F1/10
Inventor 苏凤戈陈陆水
Owner JIANDE WEIJIA TECH
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