| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing member with an electrocast part and its manufacturing method for inexpensively producing a highly accurate diameter-gap. SOLUTION: An inner peripheral face 5a of a molded part 5 having a level difference from an inner peripheral face 4a of the electrocast part 4 is molded following a non-conductive coat 9 coating the surface of a master 8. With the removal of the non-conductive coat 9, a radial gap 7 having a diameter larger than a bearing gap 6 is formed between the inner peripheral face 5a of the molded part 5 exposed to the inner periphery and an outer peripheral face 2a of a shaft member 2. This bearing member 3 which has the bearing gap 6 and the radial gap 7 formed between the shaft member 2 and itself is manufactured by applying electrocasting work to the master 8 which has the non-conductive coat 9 formed on part of the surface of the master 8 to form the electrocast part 4, injection-molding (insert-molding) the bearing member 3 in the state of inserting the electrocast part 4 and the non-conductive coat 9 on the surface of the master 8 into a cavity 15, and then removing the non-conductive coat 9 from the bearing member 3. COPYRIGHT: (C)2007,JPO&INPIT
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