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Coordinate measuring set

A technology of coordinate measurement and axis measurement, which is applied in the field of coordinate measurement devices, can solve the problems of high cost of three coordinate measuring machines and high cost of sensors, and achieve the effect of low cost and cost reduction

Inactive Publication Date: 2009-06-10
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantage of existing three-coordinate measuring machines is that most three-coordinate measuring machines use grating sensors.

Method used

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Experimental program
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Embodiment 1

[0043] The coordinate measuring device in this embodiment includes three mutually perpendicular linear measuring axes and a rotating measuring axis, and the rotating measuring axis can rotate the three linear measuring axes. A linear capacitive sensor is installed on the linear measuring axis to measure the coordinate value of the measured object; a circular capacitive sensor is installed on the rotating measuring axis to measure the angle of rotation.

[0044] The four capacitive sensors can be connected with a filter correction unit through an analog control switch, the filter correction unit is connected with a shift register, and the shift register is connected with a single chip microcomputer. Of course, each linear capacitive sensor can also be directly connected to a filter correction unit.

[0045] The analog control switch can select one of the linear capacitive sensors or circular capacitive sensors in turn to connect with the filter correction unit, and transmit the...

Embodiment 2

[0056] In this embodiment, the coordinate measuring device is also provided with a USB interface, and the USB interface is connected with the capacitive sensor, the filter correction unit, the shift register and the single-chip microcomputer, directly obtains a 5V power supply from the computer, and obtains a 2V power supply through diode voltage division , Supply components such as capacitive sensors.

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Abstract

The invention discloses a coordinate measuring device which comprises three mutually perpendicular linear measuring shafts and furthermore comprises: linear type capacitive transducers which are arranged on the linear measuring shafts and measure the coordinate value of a measured object; a filter correction unit which is connected with the linear type capacitive transducers, processes waveform correction for the data-signal of the capacitive transducers and processes filter correction for the clock signal of the capacitive transducers; a shift register which is connected with the filter correction unit and processes shift collection for the data signal after being triggered by the clock signal so as to obtain the collected data; a single chip microcomputer which is connected with the shift register and obtains the coordinate value data of the measured object according to the collected data. The coordinate measuring device of the invention adopts the capacitive transducers with low cost, and reduces the cost of the whole measuring device. And the coordinate measuring device of the invention furthermore increases a rotating measuring shaft, thereby overcoming the problem of a plurality of measuring death corners.

Description

【Technical field】 [0001] The invention relates to precision intelligent instruments, in particular to a coordinate measuring device. 【Background technique】 [0002] With the advancement of technology, the coordinate measuring machine has developed into a precision intelligent instrument integrating machinery, optics, numerical control technology and computer technology. It has become an indispensable measuring device in the process of modern industrial inspection and quality control. It is widely used in Machinery manufacturing, electronics, automobile, aerospace, military industry, mold and other industrial fields. [0003] The current coordinate measuring machine is generally a three-coordinate measuring machine. The three-coordinate measuring machine usually establishes a rectangular coordinate system by three mutually perpendicular motion axes X, Y, and Z, and a probe is installed on one of the motion axes, and all movements of the probe are carried out in this coordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/008
Inventor 谢小辉杜如虚
Owner SHENZHEN INST OF ADVANCED TECH
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