Large-modulus rack machining method

Abstract

The invention relates to a large-modulus rack machining method, which relates to the field of the machining, in particular to a large-modulus rack machining method. The method comprises the following steps: forging a blank; roughly machining the blank, controlling small cutting output, feeding a cutter for multiple times, and controlling the deformation of a workpiece; tempering, to be specific, controlling the tempering hardness to reach 217 to 255 HBW; semi-finishing the workpiece, to be specific, semi-finishing a centre hole in an upper flat end surface of a boring machine, machining a square surface and a hoisting hole, and controlling the machining allowance to be 2mm to 3mm; aging the workpiece; finishing the workpiece, to be specific, finishing the centre hole on the upper flat end surface of the boring machine, finish turning an outer circle on a 1680 machine tool, strictly controlling the cutting output, feeding the cutter for multiple times, controlling the deformation of the workpiece, finally milling the square surface, the hoisting hole and the overall length of the workpiece on a 13m numerical-control gantry milling machine to reach the requirement of a drawing, installing a cutter disc on a universal milling head, respectively machining each toothed surface, and controlling the size of each part of the tooth by utilizing a toothed tooth distance template. By adopting the method, the product quality is improved, various technical indexes such as size precision, geometric precision and surface roughness are enabled to meet the design requirement and the application performance requirement, and the requirement of a component on the machine tool can be lowered.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a large modulus rack processing method. Background technique [0002] The processing of large modulus racks has always been a difficult point in the industry. Due to the small cross-section and large longitudinal length of the rack, the structure is easily deformed after rough machining, especially after rough cutting. The general method is to rough the workpiece into a cylindrical shape for adjustment. Quality, post-processing teeth, which will cause deformation of the rack after tooth opening, which will affect the machining accuracy of the parts, and the requirements for the machine tool are high, and the processing and production are inconvenient. Contents of the invention [0003] In order to solve the above problems, the present invention provides a large-modulus rack that can improve product quality, and can ensure that various technical indicators such as dimensiona...

AI Technical Summary

Problems solved by technology

[0002] The processing of large modulus racks has always been a difficult point in the industry. Due to the small cross-section and large longitudinal length of the rack, the structure is easily deformed after rough machining, especially after rough cutting. The general method is to rough the workpiece into a cylindrical shape for adjustment. quality, post-processing teeth, which will cause deformation of the rack after tooth opening, which will affect the machining accuracy of the parts, and the requirements for machine tools are high, and processing and production are inconvenient