公开(公告)号：US20180209788A1

公开(公告)日：2018-07-26

申请号：US15744326

申请日：2016-08-04

Applicant: RENISHAW PLC

Inventor： David Roberts MCMURTRY ,  Stephen Mark ANGOOD ,  Colin Ray BULLED ,  David James FOOK ,  Marcus James EALES ,  Christopher KEMP

IPC: G01B21/04 ,  G01B5/00

CPC classification number: G01B21/047 ,  B23Q1/5462 ,  G01B5/0004 ,  G01B5/0016 ,  G01B21/045

Abstract: A non-Cartesian coordinate positioning machine is provided that comprises an extendable leg assembly for positioning a component such as a measurement probe within a working volume of the machine, and a constraint member associated with the extendable leg assembly for providing a predetermined part of the extendable leg assembly with substantially a same orientation relative to gravity for a same position of the component within the working volume. In a preferred embodiment, the orientation relative to gravity is maintained substantially constant, so that a plane defined by the predetermined part is substantially aligned with gravity, as the component is moved around the working volume.

公开(公告)号：US20210010808A1

公开(公告)日：2021-01-14

申请号：US17034524

申请日：2020-09-28

Applicant: RENISHAW PLC

Inventor： David Roberts MCMURTRY ,  Stephen Mark ANGOOD ,  Colin Ray BULLED ,  David James FOOK ,  Marcus James EALES ,  Christopher KEMP

IPC: G01B21/04 ,  G01B5/00 ,  B23Q1/54

Abstract: A non-Cartesian coordinate positioning machine is provided that comprises an extendable leg assembly for positioning a component such as a measurement probe within a working volume of the machine, and a constraint member associated with the extendable leg assembly for providing a predetermined part of the extendable leg assembly with substantially a same orientation relative to gravity for a same position of the component within the working volume. In a preferred embodiment, the orientation relative to gravity is maintained substantially constant, so that a plane defined by the predetermined part is substantially aligned with gravity, as the component is moved around the working volume.

公开(公告)号：US20240401942A1

公开(公告)日：2024-12-05

申请号：US18690648

申请日：2022-09-08

Applicant: RENISHAW PLC

Inventor： Stephen Mark ANGOOD ,  David James FOOK

IPC: G01B21/04 ,  B25J9/16 ,  G01B21/16

Abstract: A measurement strut for measuring a separation between two relatively moveable support members of a machine (for example, a robot arm). The strut is removably couplable between the two support members and is adapted to become at least partially decoupled from at least one of the support members when a compressive force developed in the strut by relative movement of the support members is greater than a predetermined threshold. By becoming at least partially decoupled from at least one of the support members, at least some of any excess relative movement of the support members towards each other can be absorbed, thereby helping to prevent damage being caused to the strut by attempting to compress the strut beyond its minimum range of travel.