Two dimensional connecting rod type rotation accurate adjustment rack with two-plate structure
A precision adjustment, link-type technology, applied in the field of precision adjustment frames, can solve the problems that the precision of the adjustment angle is difficult to reach the second-level precision, the resonance frequency of the mechanism is reduced, and the rigidity is reduced, so as to achieve great advantages and promotion value, improve Stability, the effect of improving adjustment accuracy
Inactive Publication Date: 2006-02-22
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
The traditional two-plate structure often uses elastic elements, such as tension springs, between the moving plate and the fixed plate to ensure the reciprocating movement of the moving plate during the adjustment process, and at the same time eliminate the thread gap. However, due to the spring in the mechanism The use of the mechanism reduces the overall rigidity of the mechanism, which leads to a decrease in the resonant frequency of the mechanism. Therefore, in the case of high stability requirements, the application of this mechanism is subject to certain restrictions.
In addition, when the traditional two-plate structure is adjusted, its adjustment accuracy is only related to the pitch p of the adjustment screw and the distance L between the adjustment screw and the fulcrum of rotation, that is, the adjustment angle θ=p / L; Take the fulcrum distance of 100mm as an example, and the angle adjustment accuracy is 0.3°, so the angle adjustment accuracy is difficult to meet the requirement of second-level accuracy
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[0016] see first figure 1 , figure 2 , as can be seen from the figure, the composition of the two-dimensional connecting rod type two-plate structure rotating precision adjustment frame of the present invention includes a mirror frame fixed plate 119, a mirror frame moving plate 101, two linkage mechanisms with joint ball bearings 102, A straight rod 117 with a joint ball bearing 102 at one end and an adjustment device. The fixed plate 119 and the moving plate 101 are connected by a straight rod 117 , an upper link 104 and a lower link 120 to form a two-plate structure. One end of the straight rod 117 is connected with the fixed plate 119 through a screw 118, and the other end is screwed with the ball brace 103 on which the joint ball bearing 102 is housed. The joint ball bearing 102 on the ball brace 103 matches the garden hole on one corner of the sports flat plate 101, and is tightened by a set screw 116. One end of upper connecting rod 104, lower connecting rod 120 all...
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The invention is a kind of two-dimension link two-board structure rotary precise adjusting frame, the character lies in: it includes a mirror frame fixing board, a mirror frame moving plane, two link mechanisms which has joint ball bearing, a straight pole whose one end has a joint ball bearing and an adjusting device. The invention has a simple structure, the assembly is convenient, the stabilization is good, the adjusting rate is large, the cost is low.
Description
Technical field: [0001] The invention relates to a precision adjustment frame, which is a two-dimensional link type two-plate structure rotating precision adjustment frame. It is mainly used in the adjustment mechanism of precision optics and precision machinery. Such as precise angle adjustment in optical path adjustment. Background technique: [0002] Optical precision adjustment mechanism is one of the essential tools in optical experiment and optical test, and its main function is to realize angle adjustment and translation adjustment. The form, adjustment dimension, and adjustment method of the optical precision adjustment frame are different, but in terms of the main structure relationship, it can basically be simplified as two flat plates-the space position relationship between the fixed flat plate and the moving flat plate, that is, the so-called Two-plate structure. In the traditional two-plate structure two-dimensional angle optical adjustment mount, the main st...
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IPC IPC(8): G02B7/00
Inventor 刘志刚庞向阳王国兴朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI