ACCURACY IMPROVEMENT PERTAINING TO PLANE SURFACE PROCESSING OF OPTICAL PARTS USING FREE LAPPING METHOD

Abstract

An expression for determination of contact area of tool and part plane surfaces while being processed according to free lapping method. Calculation of regularities in changes of contact area of lapping segments has been carried out in the case when the upper segment goes over the edge of the bottom one. It is shown that the change of tool diameter can be used as one of the effective parameters while controlling the shaping process of high-precision optical details with plane surfaces (или: (It is shown that change of diameter of the tool can be used as one of the effective parameters in controlling formation process of high-precision optical parts with plane surfaces. It has been substantiated that it is necessary to use bonded tools of minimum thickness in order to reduce overturning moment while abrasive slurry is to be spread on the central area of a part.