US 12,222,000 B2
Sliding linear motion guide device and method for attaching sliding member to carriage of sliding linear motion guide device
Yoshio Hoshi, Kanagawa (JP)
Assigned to MAKINO MILLING MACHINE CO., LTD., Tokyo (JP)
Appl. No. 17/640,766
Filed by MAKINO MILLING MACHINE CO., LTD., Tokyo (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033665
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/045213, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-163282 (JP), filed on Sep. 6, 2019.
Prior Publication US 2022/0307551 A1, Sep. 29, 2022
Int. Cl. F16C 29/02 (2006.01)
CPC F16C 29/02 (2013.01) 6 Claims
OG exemplary drawing
 
1. A sliding linear motion guide device which is attached between a support body and a moving body, the device comprising:
a rail which extends in a movement direction of the moving body and which comprises at least a first guiding surface extending in the movement direction, and two second guiding surfaces which are provided inclined with respect to the first guiding surface and which extend in the movement direction,
a carriage which is capable of reciprocating in the movement direction and which has a receiving recess for receiving at least a part of the rail, the carriage comprising a first sliding surface facing the first guiding surface of the rail when a part of the rail is received in the receiving recess, and two second sliding surfaces which face the respective two second guiding surfaces, wherein one of the two second sliding surfaces is defined in a gib having a gradient with respect to a depth direction, which is a direction perpendicular from the first sliding surface toward the rail, such that thickness reduces as depth progresses,
a plate-shaped sliding member is provided on each of the first and second sliding surfaces, each of the sliding members having a lubricant pocket composed of a recess having a perimeter surrounded by a land part, and a plurality of convex parts, which contact the first and second guiding surfaces of the rail when a part of the rail is received in the receiving recess, being formed in the lubricant pockets,
a first passage formed in the carriage so as to be open into the lubricant pocket at one end of each of the sliding members in a reciprocation direction of the carriage, and
a second passage formed in the carriage so as to be open into the lubricant pocket on the side opposite the one end into which the first passage is open in the lubricant pocket of each of the sliding members.