Measuring mechanism based on coupled-column structural axial lead of laser tracker
A technology of a laser tracker and a measuring mechanism, applied in the field of measurement, can solve the problems of lack of good coherence, insufficient stability, and low efficiency of the lattice, and achieve the effects of simple structure, reduced errors, and good data coherence.
Inactive Publication Date: 2011-10-19
XI AN JIAOTONG UNIV
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Problems solved by technology
But for some measurement targets, even the laser tracker equipped with T-Probe cannot measure well, for example, for the measurement of the axis line of the lathe spindle, because the measurement object is very regular, use T-Probe to measure It is not stable enough, and the dot matrix obtained by the measurement does not have good coherence, and the efficiency is relatively low when more data needs to be collected.
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[0015] The present invention is described in further detail below in conjunction with accompanying drawing:
[0016] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , the technical solution adopted by the present invention to solve the technical problem is: according to the shaft diameter of the lathe spindle mandrel to be measured, a set of mechanical mechanism is designed, which is fitted with the mandrel periphery. The basic structure is a hollow cylindrical bushing as a bracket, and four wheels are installed symmetrically on both ends of the inner side of the bushing, seven of which are follower wheels that can be rotated arbitrarily, and the other wheel is fixed to the cross section of the bushing. The included angle acts as a driving wheel. Four of the side-by-side side of the seven follower wheels are fixed radially along the shaft sleeve, while the other three follower wheels and the driving wheel are pressed tightly to the spindle mandrel by springs...
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The invention discloses a measuring mechanism based on a coupled-column structural axial lead of a laser tracker. The measuring mechanism comprises a core bracket, a self-adaptive wheel group, a cat eye support flange, a motor fixing frame, a motor support sheet and a cat eye bracket pipe, wherein the core bracket is a hollow cylindrical shaft sleeve; the hollow cylindrical shaft sleeve is sleeved at the outer side of a cylindrical structure; the inner side of the hollow cylindrical shaft sleeve is provided with the self-adaptive wheel group; the self-adaptive wheel group consists of four wheels which are symmetrically arranged at the two ends of the inner side of the hollow cylindrical shaft sleeve respectively; seven wheels are follower wheels; one wheel is a driving wheel; each follower wheel is connected with the cat eye support flange; and the cat eye support flange is connected with the cat eye support pipe. The measuring mechanism has the advantages that: acquired data have high continuity, and errors caused by manual intervention are reduced. The measuring mechanism has a simple structure and can adapt to measurement of mandrels of different diameters; and a certain expansion performance is realized by adjusting the installation relation between the eight wheels and the shaft sleeve.
Description
Technical field: [0001] The invention belongs to the field of measurement, and relates to a supporting auxiliary measuring device, in particular to a measuring mechanism for the axis line of a cylindrical structure based on a laser tracker. Background technique: [0002] The laser tracker is an instrument that uses laser as a distance measurement method and a reflective target. It relies on the three technologies of high-precision angle encoder, light reconnection and laser distance measurement. It is also equipped with an angle measuring mechanism that rotates around two axes to form a complete spherical coordinate measuring system, which can be used to measure stationary targets, track and measure moving targets or their combination, and then use it to measure straightness and angle, especially Played its advantage in the measurement of longer distance. The invention of the T-Probe matched with the laser tracker has made it possible to measure hidden places, especially th...
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IPC IPC(8): G01B11/26
Inventor 郭俊杰贾天玖王金栋邓玉芬王昊
Owner XI AN JIAOTONG UNIV