Taper shank gear shaper cutter is a kind of gear shape or tooth strip gear processing cutter, Used for generating method (see gear machining) machining straight and helical cylindrical gears with internal and external meshing. The gear shaper cutter is characterized by machining shoulder gear, multi gear and herringbone gear without empty cutter slot. On the one hand, its structural size is limited by the structural size of the inserted gear and the structural size of the gear shaper tooling, on the other hand, it is limited by the spindle stroke of the gear shaper and the taper sleeve hole. Design the taper shank gear shaper When designing the structure size of the cutter, we should not only meet these restrictions, but also ignore the structural interference of gear grinding
The precautions for the taper shank gear shaper cutter are to produce the back angle and do not affect the tooth shape of the processed gear after regrinding. The shape of the modified gear is made in each section perpendicular to the axis of the gear shaper cutter. The modification coefficient x0 gradually decreases from the front end to the rear end face and changes from positive to negative. The use of gear shaper cutter is limited. Limitation of gear undercutting: when the tooth top of gear shaper cutter cuts into the involute tooth profile at the root of the gear to be cut in the cutting process, it is called undercutting. The less the number of teeth of the gear to be machined, the greater the possibility of undercutting.
Limit of gear top cutting. Top cutting refers to the phenomenon that the top of the gear to be cut enters the root tooth profile of the gear shaper cutter and is cut off. The smaller the number of teeth and displacement coefficient of the gear shaper cutter, the easier it is to produce top cutting. Due to the limitation of interference of gear transition curve, the gear shaper cutter can not cut the involute tooth profile on the whole tooth surface, and there is a transition curve at the root of the gear. The less the number of teeth of the gear shaper cutter and the greater the tooth deformation coefficient, the longer the transition curve. If the tooth top of the paired gear contacts with the transition curve, interference will occur. For the gear shaper cutter for machining internal gears, the restriction that the gear shaper cutter does not have top cutting in the radial cutting process should also be considered.
The precautions for the taper shank gear shaper cutter are to produce the back angle and do not affect the tooth shape of the processed gear after regrinding. The shape of the modified gear is made in each section perpendicular to the axis of the gear shaper cutter. The modification coefficient x0 gradually decreases from the front end to the rear end face and changes from positive to negative. The use of gear shaper cutter is limited. Limitation of gear undercutting: when the tooth top of gear shaper cutter cuts into the involute tooth profile at the root of the gear to be cut in the cutting process, it is called undercutting. The less the number of teeth of the gear to be machined, the greater the possibility of undercutting.
Limit of gear top cutting. Top cutting refers to the phenomenon that the top of the gear to be cut enters the root tooth profile of the gear shaper cutter and is cut off. The smaller the number of teeth and displacement coefficient of the gear shaper cutter, the easier it is to produce top cutting. Due to the limitation of interference of gear transition curve, the gear shaper cutter can not cut the involute tooth profile on the whole tooth surface, and there is a transition curve at the root of the gear. The less the number of teeth of the gear shaper cutter and the greater the tooth deformation coefficient, the longer the transition curve. If the tooth top of the paired gear contacts with the transition curve, interference will occur. For the gear shaper cutter for machining internal gears, the restriction that the gear shaper cutter does not have top cutting in the radial cutting process should also be considered.
