US 11,806,823 B2
Workpiece support device
Yoshiyuki Takitani, Toyama (JP); Yuji Kanehira, Toyama (JP); and Nobuhito Oki, Toyama (JP)
Assigned to KOMATSU NTC LTD., Nanto (JP)
Appl. No. 17/439,980
Filed by KOMATSU NTC LTD., Nanto (JP)
PCT Filed Mar. 16, 2020, PCT No. PCT/JP2020/011379
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/189613, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-049815 (JP), filed on Mar. 18, 2019.
Prior Publication US 2022/0395943 A1, Dec. 15, 2022
Int. Cl. B23Q 1/25 (2006.01); B23Q 3/06 (2006.01)
CPC B23Q 1/25 (2013.01) [B23Q 3/06 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A workpiece support device for supporting a workpiece as an object to be machined, comprising:
a jig having a main flow path to flow a fluid required for machining and a sub-flow path different from the main flow path, and to fix the workpiece;
a table having a table flow path to communicate with the main flow path, and being attached with the jig;
a rotating shaft having a rotating shaft flow path to communicate with the table flow path, and being connected to the table;
a support member supporting the rotating shaft during rotation;
a flow path connector connecting the rotating shaft flow path of the rotating shaft with a fluid-supply path to communicate with a fluid-supply side so as to relatively rotate the rotating shaft flow path and the fluid-supply path about an axis of the rotating shaft; and
a supply-side connecting portion moving relative to the jig to communicate with and to block off the sub-flow path, and flowing a supplied fluid.