Finishing of gear sprockets and racks

Current industrial applications ofGearThe main finishing methods are shaving, grinding, squeezing, grinding and honing.

Gear shaving is a method of gear finishing by shaving the teeth with a shaving knife on a gear shaving machine. It drives the relative rotation of the processed gear, as the staggered shaft gear mesh, by the relative sliding on the tooth surface, the shaving knife cut off a very thin layer of metal on the tooth surface, to complete the finishing of the gear, shaving machine skid plate adjustment to ensure that the gear tooth direction processing correct. Shaving accuracy is limited by the accuracy of the tooth processing before shaving. Shaving production efficiency is high, suitable for hobbing, inserting the tooth after the soft tooth surface finishing processing.

Gear grinding is the use of grinding wheels to grind the tooth surface, which can grind gears with hardened tooth surface, eliminate heat treatment deformation and improve gear accuracy. According to the different grinding wheels used, gear grinding is further divided into: (1) conical grinding wheels for gear grinding;

(2) Butterfly grinding wheel for grinding teeth;

(3) Large flat grinding wheel for grinding teeth;

(4) Worm grinding wheel grinding teeth;

(5) Involute envelope ring face worm grinding wheel grinding teeth;

(6) Forming grinding wheel for grinding teeth.

Extrusion and honing are both methods of gear finishing. Squeezing is to use the squeezing wheel to squeeze the tooth surface of the gear being processed to improve the surface quality of the gear, which is mainly applicable to the finishing of soft tooth surface gears after hobbing and shaping. And honing is basically the same as shaving method, that is, shaving knife is replaced by the same shape of honing wheel, rely on the relative sliding with the tooth surface to polish the tooth surface, the tooth surface of the processed gear can be soft or hard.