FIELD: machine engineering, possibly grinding parts with opening and end working surface having gently sloping lateral surface of truncated cone and used, for example in transmissions with continuously variable gear ratio.
SUBSTANCE: apparatus for performing the method includes housing, grinding table moving in lengthwise direction and having headstock and clamping chuck for fastening machine part at one side and grinding stock carrying at least two grinding wheels. Grinding stock is mounted with possibility of rotation around vertical axis and motion in direction towards lengthwise axis of part. Gently sloping working surface of part is ground due to lengthwise motion of grinding table by means of first grinding wheel at using normal grinding procedure. After shifting second grinding wheel to working position, lengthwise opening is subjected to grinding at the same setting of part.
EFFECT: improved efficiency and quality of working due to providing the same cutting speed along the whole width of grinding wheel, possibility for working part at optimal feed values for one setting of part.
11 cl, 5 dwg
