Measuring mechanism for straightness or coaxiality of hollow threaded thin rod and method for measuring straightness or coaxiality by using the mechanism
A technology of hollow thread and measuring mechanism, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of low measurement efficiency, hole size limitation and error of hollow thread thin rods, and achieve the goal of avoiding manual errors and overcoming the size of the hole The effect of restriction and ease of operation
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specific Embodiment approach 1
[0043] Specific implementation mode 1: refer to Figure 5 or Image 6 Specifically describing this embodiment, the hollow thread thin rod straightness or coaxiality measuring mechanism described in this embodiment includes: a guide vehicle motion control device 1, a micro-friction guide vehicle 2, a reflective target 3 and a laser tracker 4 ;
[0044] The guided vehicle motion control device 1 is used to control the movement or stop of the micro-friction guided vehicle 2;
[0045] The micro-friction guide car 2 is used to drive the reflective target 3 to slide along the axial direction of the hollow thread thin rod to be measured;
[0046] The reflective target 3 is fixed on the micro-friction guide vehicle 2; and the laser emitted by the laser emitting end of the laser tracker 4 is incident on the reflective target 3 at an angle between the axis of the hollow thread thin rod, and the reflective target 3 reflects the laser light. to the laser receiving end of the laser trac...
specific Embodiment approach 2
[0047]Specific implementation two: refer to Figure 7 This embodiment is described in detail. This embodiment further describes the measuring mechanism for the straightness or coaxiality of the hollow thread thin rod described in the first embodiment. In this embodiment, the micro-friction guide car 2 is cylindrical , a plurality of balls 2-1 are embedded in the outer surface of the cylindrical micro-friction guide car 2, and a groove 2-2 is formed in the center of the end face of one end of the micro-friction guide car 2, and the reflective target 3 is embedded in the groove.
[0048] The measuring device described in this embodiment is suitable for the measurement of hollow threaded thin rods. In the actual measurement process, the micro-friction guide car 2 is located inside the hollow threaded thin rod to be measured in actual application. The laser is fired onto the reflective target through the inside of the hollow threaded thin rod. When the micro-friction guide car 2 ...
specific Embodiment approach 3
[0049] Specific implementation mode three: refer to Figure 8 This embodiment is described in detail. This embodiment further describes the measuring mechanism for the straightness or coaxiality of the hollow thread thin rod described in Embodiment 1. In this embodiment, one side of the micro-friction guide car 2 There is a sliding groove 2-3, the sliding groove 2-3 is provided with a ball 2-1, the other side of the micro-friction guide car 2 is provided with a trapezoidal protrusion 2-4, and the reflective target 3 is fixed on the protrusion. From 2-4 on.
[0050] The measuring device described in this embodiment is suitable for measuring the straightness and coaxiality of the outer surface of the solid hollow threaded thin rod or the hollow threaded thin rod whose inner diameter is too small. During the measurement process, the hollow threaded thin rod to be measured is placed horizontally , and insert the hollow thread thin rod to be measured into the sliding groove 2-3 of...
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