Making technology for transmission double-end internal-teeth ring of electric forklift

Abstract

The invention discloses a making technology for a transmission double-end internal-teeth ring of an electric forklift. The making technology comprises the following steps: 1, performing warm forging and plastic molding: 2, spheroidizing annealing; 3, performing blank making, shot blasting and saponifying; 4, performing cold-extruding on internal teeth of a central hole; 5, machining; 6, performing salt bath tufftriding. A product prepared by the technology is stable in quality, small in accumulated errors among the teeth, high in yield, and short in production cycle; the production efficiency is improved; the problem that a traditional transmission gear shaping is large in lathe equipment investment of multiple, low in production efficiency, high in manufacture cost and difficult to realize massive production, is solved, and the defects that the quality of the product is unstable and the rejection rate of the product is high which are caused by the fact that two gear rings are formed by welding and the generated deformation is large, are overcome.

Description

technical field [0001] The invention belongs to the technical field of forging and pressing forming of metal parts, and relates to a manufacturing process of an electric forklift transmission double-end internal gear ring. Background technique [0002] The double-end internal gear ring of electric forklift transmission is a key part that transmits power and is subjected to a large instantaneous force. Both ends of the electric forklift transmission double-end inner gear ring have tooth surfaces inside, and the inner tooth surfaces at both ends transmit power at the same time. The transmission requirements are high, and the manufacturing accuracy and tooth surface strength are high. China Intellectual Property Office has published CN201310427665. 6 The production process of the car transmission parking gear ratchet includes the following steps: ① Warm forging plastic forming: heating the solid cylindrical metal material to the forging temperature, and die forging a hollow cyl...

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Problems solved by technology

[0003] The present invention aims at the drawbacks of the existing machined electric forklift transmission double-ended internal gear ring, and mainly solves the existing traditional transmission gear shaper, which requires more investment in machine tool equipment, low production efficiency, high manufacturing cost, difficulty in mass production, and due to two gears Welded rings, the deformation is large, the coaxiality is not high, the quality is unstable, and the product scrap rate is high. A manufacturing process for electric forklift transmission double-ended internal gear rings is provided, and it can achieve high density of the base material, Strong impact resistance effect

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