Non-rigid connection rapid-drive high-precision displacement measuring device

A displacement measurement, non-rigid technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of measuring rod parallelism error, affecting measurement accuracy, no degree of freedom, etc., to improve repeatability accuracy, improve measurement accuracy, and improve measurement efficiency Effect
CN110296672APending Publication Date: 2019-10-01CHENGDU HUALIANG SENSOR CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU HUALIANG SENSOR CO LTD
Publication Date
2019-10-01

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Abstract

The invention discloses a non-rigid connection rapid-drive high-precision displacement measuring device comprising a support, a threaded pipe, a threaded column, and a measuring anvil; internal threads of the threaded pipe are matched with external threads of the threaded column, a measuring shaft, an elastic element and a measuring element used for measuring the displacement of the measuring shaft are arranged in the support, one end of the measuring shaft is a measuring head, the measuring head is matched with the measuring anvil, the measuring shaft is connected with the threaded column, the threaded column only has the degree of freedom in the axial direction under the action of a guiding mechanism, the measuring shaft is connected with the support through a linear guide rail, one endof the elastic element is connected with the support, the other end of the elastic element is connected with the measuring shaft, and the elastic element is used for exerting restoring force towards the direction of a measured point on the measuring shaft. According to the non-rigid connection rapid-drive high-precision displacement measuring device in the invention, the measuring shaft and the driving structure are connected in a non-rigid mode, the measuring rod only provides constant measuring force at the same deformation position by a spring, thereby improving the repeatability precisionand preventing too large external force from acting on the measuring rod to affect the precision of the measuring tool and damage the measured piece, a rotating and stirring mode is adopted, the requirement for fast switching size is met, and the measuring efficiency is high.
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Description

technical field

[0001] The invention relates to a displacement measuring device, in particular to a non-rigidly connected fast-driving high-precision displacement measuring device. Background technique

[0002] Displacement measuring devices, such as micrometers, can be used to measure length to an accuracy of 0.01mm. Existing micrometers have the following disadvantages:

[0003] 1. Ordinary micrometers use a ratchet device. The force measurement is relatively stable when the ratchet device is at a constant speed, but the rotation speed of the ratchet is easily affected by external factors and fluctuates. The repeatability accuracy is low. The force of the lever micrometer is relatively stable, but it is limited to a very small stroke range. In order to achieve high-precision measurement, the lever micrometer needs to use a standard gauge block for zero adjustment before measurement, that is, relative measurement. The measurement process is more complicated. , while ordi...

Claims

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