US 4,502,456 A · Apparatus for dressing grinding wheels

Abstract

A grinding machine wherein the grinding wheel has a profile consisting of recurrent identical sections, as considered in the axial direction of the grinding wheel. The profile of the grinding wheel is treated by a dressing tool whose profile is that of a worm and is complementary to the profile of the grinding wheel. The axial length of the dressing tool equals that of one section of the profile of the grinding wheel and the axes of the grinding wheel and dressing tool make an angle which matches the lead angle of the worm-like profile of the tool. A feed screw is used to move the dressing tool in parallelism with the axis of the grinding wheel at a rate such that axial displacement of the tool per revolution of its shaft equals the axial length of one section of the profile of the grinding wheel. The grinding wheel is used to convert blanks into toothed racks.

Claims9

Dependent claims

In a grinding machine, the combination of a rotary grinding wheel having a first profile which is other than a helical profile and includes a plurality of identical sections disposed one next to the other, as considered in the axial direction of said wheel;

a rotary dressing tool whose axis is inclined with reference to the axis of said grinding wheel and whose axial length is a fraction of the axial length of said grinding wheel, said tool having a worm-like second profile at least substantially complementary to a section of said first profile;
and advancing means for effecting a relative movement between said grinding wheel and said tool along a path such that the mutual inclination of said axes remains unchanged.

Dependencies are inferred from the claim text.

Apparatus for dressing grinding wheels

Life of this patent

Apparatus for dressing grinding wheels

Life of this patent

Abstract

Claims9