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Surface sensing device

A technology for surface polishing and workpiece surface, applied in measuring devices, point coordinate measurement, mechanical measuring devices, etc., to solve problems such as the inability to obtain surface profile information, the inability of the stylus tip to reach the workpiece surface, and the restriction of the number of surfaces.

Active Publication Date: 2014-09-24
RENISHAW PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But some probes, such as optical probes and surface finish probes, are unidirectional, meaning they can only sense a part from one direction, limiting the number of surfaces they can touch
[0009] Occasionally the stylus tip cannot reach the surface of the workpiece due to the various shapes of the workpiece and the physical dimensions and constraints of the probe head motion
Therefore, no information about the surface profile can be obtained

Method used

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Embodiment Construction

[0045] refer to figure 1 , the coordinate system on the coordinate locator may be defined by three mutually orthogonal axes 1A, 2A and 3A, so that in use, 1A is substantially vertical and 3A is substantially horizontal. If the axis 1A is at the 0 degree position in the paper, moving from the 0 degree position to the 90 degree position also in the paper can be achieved by rotating counterclockwise around the axis 2A.

[0046] figure 1 A preferred embodiment of the invention is shown in a three-dimensional view, figure 2 shows the figure 1The plane defined by the axes 1A and 2A passes through the section of the device. The support 7, in this case the articulated probe head, comprises first and second housing members 1 and 2, respectively. The first housing member 1 is fittingly connected to a position determining device 26 (eg an arm of a CMM) and houses a motor M1 for effecting an angular displacement of the first shaft 20 about the first axis 1A. Connected to the first s...

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Abstract

An apparatus for measuring a surface of a workpiece is described. The apparatus comprises a support (7), attachable to the moveable arm of a machine (26), such as a coordinate positioning machine, and rotatable about first (1A) and second (2A) axes of rotation, the axes driven by first (M1) and second (M2) motors respectively. The apparatus additionally comprises a unidirectional probe or surface finish probe (4) for sensing the surface of a workpiece, rotatable about a third axis of rotation (4A). A rotation means (6) is provided for allowing rotation of the unidirectional probe or surface finish probe (4) with respect to the support (7) about a third axis of rotation (4A).

Description

[0001] This patent application is a divisional application of the patent application with the application number 200780032763.2 (international application number PCT / GB2007 / 003295), the applicant is "Renish Howe Company", and the invention name is "Surface Sensing Device". technical field [0002] The invention relates to a surface sensing device for use in a position determining device, such as eg a coordinate measuring machine (CMM), a scanner, a machine tool, or an inspection / measurement robot. Background technique [0003] Such position determination machines (see eg US-A-3,727,119 describing a CMM) are used to measure workpieces and generally comprise an arm movable in three directions x, y, z relative to a table supporting the workpiece. The movement of the arm in each direction x, y, z is measured by a transmitter on the machine and a probe mounted on the arm produces a signal indicative of the relationship between the surface of the workpiece to be measured and the ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B5/012G01B7/012
Inventor 戴维·斯文·瓦利亚塞彼得·海杜基威兹若弗雷·麦克法兰
Owner RENISHAW PLC