公开(公告)号：US20230286099A1

公开(公告)日：2023-09-14

申请号：US18246776

申请日：2021-10-06

Applicant: RENISHAW PLC

Inventor： Samuel David HOYLE ,  Benjamin Jason MERRIFIELD ,  Stephen Lindsey TOCKNELL ,  Paul ANDREWS

IPC: B23Q17/24 ,  B24B49/12 ,  G01B11/02

CPC classification number: B23Q17/2457 ,  B23Q17/2485 ,  B24B49/12 ,  G01B11/02 ,  B23Q2717/00

Abstract: An improved method is described for measuring a dimension (e.g. diameter) of a non-toothed tool, for example a grinding tool such as a diamond coated burr. The method may be implemented on a machine tool, such as a lathe, machining centre or the like. The method comprises passing a beam of light from a transmitter to a receiver. The receiver produces a received intensity signal related to the intensity of received light. Analysis of variations in the received intensity signal is performed when a rotating tool is moved relative to the light beam to enable a dimension of the tool to be measured. In particular, it may be determined when the received intensity signal has crossed a threshold for at least a defined duration, the defined duration being less than the time taken for one complete rotation of the tool.