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Low-heat expansion quartz gauge rod as well as demarcating method and application thereof

A low thermal expansion, quartz technology, used in measuring devices, mechanical devices, mechanical measuring devices, etc., can solve the problems of fitting error, high price of high-precision gauge blocks, affecting the accuracy of gauge blocks, etc., to achieve no fitting error, The effect of a small number of points

Inactive Publication Date: 2012-07-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. The machining accuracy of the working face is high
The flatness and parallelism accuracy of the two working surfaces will directly affect the accuracy of the gauge block. High-grade gauge blocks have high requirements for processing, resulting in higher prices for high-precision gauge blocks.
[0009] 3. When the gauge block is used, it will bring fitting error

Method used

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  • Low-heat expansion quartz gauge rod as well as demarcating method and application thereof
  • Low-heat expansion quartz gauge rod as well as demarcating method and application thereof
  • Low-heat expansion quartz gauge rod as well as demarcating method and application thereof

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Embodiment Construction

[0030] see figure 1 , figure 2 , the quartz rod 5 with low thermal expansion coefficient is set as the main body, and the two ends are covered with metal sleeves 3. The end faces of the metal sleeves at both ends each have a cone dimple 2, and the cone angle and depth of the cone dimples 2 on the two ends are the same. The nest centerlines coincide. In a specific implementation, the cone angle θ of the cone dimple is set at 90°-120°.

[0031] The cone socket 2 is used for positioning the probe 1 of the measuring machine to be calibrated for the articulated coordinate measuring machine, and the surface needs to be carefully ground and processed to make it have a better conicity.

[0032] The metal sleeve 3 and the quartz rod 5 are bonded by glue, and glue with a low coefficient of thermal expansion and good thermal stability is selected to form a low thermal expansion glue layer 4 to realize bonding and fixing. When bonding the metal sleeve 3, take one of the sleeve end fac...

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Abstract

The invention relates to a low-heat expansion quartz gauge rod as well as a demarcating method and application thereof. The low-heat expansion quartz gauge rod is characterized by being in a the structural form of taking a low-heat expansion coefficient quartz rod as a main body; two ends of the quartz rod are sleeved with metal sleeves; the end surfaces of the metal sleeves arranged on the two ends are respectively provided with cone sockets; the cone angles and the depths of the cone sockets arranged on the two end surfaces are same; and centre lines of the cone sockets arranged on the two ends are overlapped. The invention is very little influenced by temperature, only needs a small number of survey stations when in use, effectively reduces the influence of measurement temperature errors, machining precision and data fitting errors on the working lengths of gauge blocks and is especially suitable for demarcating parameters of an articulated type coordinate measuring machine.

Description

technical field [0001] The invention belongs to the technical field of articulated coordinate measuring machines, in particular to a low thermal expansion measuring block used for calibration of articulated coordinate measuring machines. Background technique [0002] Articulated coordinate measuring machines usually form an open-chain structure by connecting each measuring arm with each rotating joint and linear displacement joint. The end of the open-chain structure is the measuring head of the measuring machine, such as full joint coordinate measuring machine and parallel joint arm coordinate measuring machine, etc. Some joints can rotate around their own axes, and some joints can translate along their own axes. In order to record the amount of joint rotation or linear displacement, each relative motion joint is equipped with an angle sensor or a displacement sensor. When using a measuring machine for coordinate measurement, the coordinates of the measuring machine probe a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/008
Inventor 费业泰王晨晨程文涛杨睿嫦尚平
Owner HEFEI UNIV OF TECH
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