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A portable high-precision coaxiality measuring device

A coaxiality measurement, high-precision technology, used in measuring devices, optical devices, instruments, etc., to achieve the effect of convenient seal selection and consistent working pressure

Active Publication Date: 2019-04-09
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, the present invention discloses a portable high-precision coaxiality measurement device, which solves the problem of convenient and fast precise measurement of the coaxiality of the cylinder in the integrated assembly and test of complex products

Method used

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  • A portable high-precision coaxiality measuring device
  • A portable high-precision coaxiality measuring device
  • A portable high-precision coaxiality measuring device

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Embodiment Construction

[0031] 1) Overall composition

[0032] The present invention adopts the laser tool (LT, laser tooling) method, uses a highly collimated laser beam to "replicate" the inner wall axis of the cylinder, and measures the positions of intersections I1 and I2 with a PSD device that is automatically sensitive to the spot position (PSD: PositionSensitive Detector, Position Sensitive Detector). The device is composed of: hydraulic tensioning reference fixture 1, laser collimation light tube 2, centering disc 3, and centering ball 4, such as figure 2 shown.

[0033] The portable high-precision coaxiality measurement device proposed by the invention has a measurement capability better than Φ0.1mm.

[0034] 2) Hydraulic expansion reference fixture 1

[0035] The axis of the product cylinder is one of the reference elements for high-precision replication of the measuring device. The present invention uses a highly collimated laser beam to "replicate" the axis of the product barrel.

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Abstract

The invention provides a portable high-precision coaxiality measuring device, which comprises a hydraulic expansion tightening reference clamp (1), a laser collimation light pipe (2), a centering disc (3) and a centering sphere (4). The hydraulic expansion tightening reference clamp (1) is arranged to the inner wall of a cylinder body to be tested (6) above; the hydraulic expansion tightening reference clamp (1) clamps the laser collimation light pipe (2); light rays emitted by a light source assembly (2-11) irradiate to a spot position sensor (4-2) of the centering sphere (4) from an incident window of a centering sphere structure (4-1); and the centering sphere (4) is arranged in the center of the centering disc (3). The device is suitable for realizing high-precision measurement of coaxiality between small and medium cylinder products; and the device is small in size and can be used conveniently even under condition of poor surrounding view field of the cylinder products.

Description

technical field [0001] The invention relates to a coaxiality measuring device. Background technique [0002] In the field of industrial applications, it is often necessary to accurately measure and adjust the coaxiality between two cylindrical products. [0003] Assume that the two spare cylinder products are in the upper and lower positions, such as figure 1 As shown, a coordinate system is established, with the axis d of the cylinder to be measured below as the x1 axis, a certain point on the x1 axis as the coordinate origin o1, and the y1 axis and the z1 axis as two perpendicular to each other in a plane perpendicular to the x1 axis. direction, and all pass o1 point, the directions of x1, y1, and z1 conform to the right-hand rule; the direction b of the 6 axis of the cylinder to be measured above is the x2 axis, a point on the x2 axis is the coordinate origin o2, and the y2 axis and the z2 axis are Two directions perpendicular to each other in the plane perpendicular to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/27
CPCG01B11/272
Inventor 杨孟飞姚猛郑燕红赵志晖金晟毅韩璐邓湘金
Owner BEIJING INST OF SPACECRAFT SYST ENG
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