| 摘要 |
A method of manufacturing a multi-tooth fir-tree or bulbous form milling cutter, by the grinding of a blank with a grinding wheel, wherein, a flat clearance angleΘof between 0° and 20° is generated on each tooth (13) by the path (14) of the grinding wheel (10), with each tooth (13) having a width (X) from tip to point of maximum clearance (see FIG. 5), calculated as follows: X={[(RtanΘ)cosΘ]cosΘ}±0.25% (being calculation (A)) where R=radius of cutter, and whereΘ=clearance angle measured from a tangent to the tooth tip, and furthermore, wherein, each tooth (13) has a variable depth (Y) around the cutter, calculated as follows: Y={[πD]/[180/Θ]} 0.5±0.2. (being calculation (B)) where D=maximum diameter of the form at any given point along the form. The invention also includes fir tree and bulbous milling cutters produced by the above defined method.
|
