DETECTOR FOR QUANTITY OF FITTING CLEARANCE

摘要

PURPOSE:To improve the reliability of detection by placing a prescribed pre-load and clamping the inner ring of a bearing from above and below, and clamping part of an outer ring side and detecting and reading the quantity of movement (clearance) of the outer ring side by a sensor when the outer ring side is moved with prescribed force. CONSTITUTION:A bottom mold work W1 is placed on a backup head (cradle) 1 and a top mold work W2 is fitted therein across a bearing B rotatably by the auter ring of the bearing. A clamp head 2 is provided to the lower end of a rotating shaft 2a and the prescribed pre-load is placed downward to clamp the inner ring of the bearing B from above and below. Then, the clamp head is rotated slowly while one end of the top mold work W2 of the outer ring is clamped by a clamper K, and then the inner ring and bottom mold work W1 rotate around the backup head 1 as a rotary bearing to improve the conformability of the top mold work W2 with the outer ring. When it is moved up an down with the prescribed force in this state, the quantity (x) of clearance between the inner and auter rings is detected as the up/down movement of the top mold work W2 by micrometer sensors MS and MS arranged symmetrically about the center O of the bearing.