Research on Anti fatigue Manufacturing Technology of High Hardness Thin Wall Gear Ring with Keyway
The gear ring with keyway is a typical part in mechanical transmission,with shape characteristics such as larger diameter,thinner radial thickness,and symmetrical two keyways.The requirements for dimen-sional accuracy and positional tolerance are high,the surface hardness is high,and the machining difficulty is high.In order to solve the above problems,this article takes a keyed thin-walled groove gear ring as an example to analyze the special structural characteristics and manufacturing difficulties of the thin-walled gear ring.A de-sign plan for controlling the deformation of the parts,the depth of the carburized layer on the surface of the teeth,and the surface roughness of the manufacturing difficulties is formulated.A specific process plan is de-signed and verified through machining,and a reasonable machining plan is obtained.On this basis,a pitch circle fixture with non circular inner holes was designed;By combining rough and fine insertion,and using stable treat-ment and precision grinding benchmarks between the rough and fine insertion processes,the deformation range of the parts can be controlled.The feasibility of this process has been verified through the processing of actual parts,accumulating certain experience for the fatigue resistance of such parts.
Mechanical transmissionThin walled gear ringHard tooth surfaceDeformationPitch circle fixture
万方数据
维普
