Just as tooth form error, tooth surface roughness, ring gear radial runout error, tooth phase error and common normal length error, machining mistakes of main gear shafts also exist.
1. Tooth form mistake
The hob cutter's poor grinding quality makes tooth shape error very common. The gear teeth's tooth shape accuracy is exactly determined by the hob cutter's tooth shape mistake.
2. Roughness of the tooth surface
Improper cutting parameters selection; Steel system software, CNC lathes, CNC blades, and CNC lathes have low general stiffness and big gaps. The components and materials are uneven and the disc cutter is not very honed; The relative proportions of the steel component and the disc cutter alter.
3. Radial runout error of ring gear
The centre holes at both ends of the component do not correspond with or stray from the centre of rotation of the table during installation. The particular reason might be eccentricity resulting from inadequate interaction between the central hole and the centre.
4. Tooth phase error
Gear processing fixture, gear blank manufacturing precision, gear blank installation, etc.; reason When the gear hobbing helical gear, the computation error of the differential hanging wheel is more; the manufacturing and adjustment error of the differential transmission sprocket gear is too great; the vertical feed direction of the gear hobbing machine tool and the tool holder deviates from the axis of the part, or the centre of the top tailstock.
5. Typical typical length error
Deterioration of the circular guide rail of the hob table, inadequate rotation accuracy of the turbine side of the hob table, and the variation between the indexing turbine and the circular guide rail.