Method and apparatus for copy-grinding and finishing of cylindrical and spherical surfaces

A method for the copy-grinding and finish-grinding a surface of a surface member to be ground by means of a belt grinding apparatus comprising the following steps:

• heating the surface to be processed to a predetermined temperature,
• accelerating the surface to be processed to a predetermined rotating velocity,
• accelerating a grinding belt of a belt grinding apparatus to a predetermined running velocity,
• guiding a contact roller of said grinding belt into a first grinding position relative to the surface to be processed, said first grinding position being adjustable by a variable adjusting device,
• performing an initial grinding phase wherein said grinding belt passes in a reciprocating manner over an axial length of said surface to be ground and is pressed under a predetermined pressure onto said surface, said grinding belt being displaceable during said initial grinding phase relative to a guide rod having a desired surface profile, said grinding belt being displaceable within a predetermined clearance according to any irregular contour regions on said surface such that said surface is uniformly ground independently from an initial surface geometry,
• guiding said grinding belt into a second grinding position relative to the surface, wherein said grinding belt passes without clearance between said belt and said guide rod in a reciprocating manner in a direction parallel to said guide rod over an axial length of said member to be ground,
• performing a precision grinding phase by adjusting said contact roller of said grinding belt apparatus by a feed slide of said adjusting device after each pass in a grinding depth until said member to be ground attains a profile in accordance with the profile of said guide rod, and
• performing a second finish grinding phase wherein grinding belts of increasing fineness are used to obtain a desired member to be ground surface.