METHOD FOR PRODUCING CALIPER HALF BODY OF DISC BRAKE CALIPER BODY, CALIPER HALF BODY OF DISC BRAKE CALIPER BODY, AND METHOD FOR PROVIDING DISC BRAKE CALIPER BODY

WIPO Patent Application WO/2022/131200

A1

A method for producing a caliper half body, the method involving producing a caliper half body to be used in multiple types of disc brake caliper bodies having different cylinder hole diameters by using the same casting material having a cylinder hole pilot hole, wherein the method comprises: an introduction hole drilling step for forming a first hydraulic fluid introduction hole 11 or a second hydraulic fluid introduction hole 16, through which a hydraulic fluid is introduced into a cylinder hole, in the same casting material by drilling at the same angle from the end surface that will be the joint surface toward the bottom side of the cylinder hole pilot hole; a cylinder hole cutting step for cutting the pilot hole to the established diameter of the cylinder hole; and a connection hole cutting step for forming a connection hole, through which the bottom side of the cut cylinder hole and the first hydraulic fluid introducing hole 11 or the second hydraulic fluid introducing hole 16 are connected, by contouring the bottom side of the cylinder hole.

JPH04344848	ACCESSORY AND ITS CASTING METHOD
JPS58202964	METHOD FOR FORMING FINE HOLE IN CASTING PRODUCT
WO/1998/050186	METHOD FOR PRODUCING POROUS CAST PARTS

ATSUTA DAIKI (JP)

PCT/JP2021/045782

June 23, 2022

December 13, 2021

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HITACHI ASTEMO LTD (JP)

B22D25/02; F16D55/226; F16D65/02

JP2019100349A	2019-06-24
JP2013245795A	2013-12-09
JP2013230531A	2013-11-14
JP2009228729A	2009-10-08

KIDO, Yoshihiko et al. (JP)

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