Two-stage micro-displacement amplification mechanism

An amplifying mechanism and micro-displacement technology, which is applied to device parts, piezoelectric devices/electrostrictive devices, etc., can solve the problems of difficulty in obtaining amplified output displacement, difficulty in accurately realizing the target action, and limited displacement magnification, etc. External connection, compact structure, and the effect of improving displacement magnification

CN102394270AInactive Publication Date: 2012-03-28NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a two-stage micro-displacement amplification mechanism which is characterized in that two triangle displacement zooms are arranged and respectively are a first stage triangle displacement zoom and a second stage triangle displacement zoom, each triangle displacement zoom comprises four sloping sides; the input end of the first stage triangle displacement zoom is linked with a driven element; the output end of the first stage triangle displacement zoom is linked with the input end of the second stage triangle displacement zoom. In the optimized scheme, flexibility hinges are respectively arranged at the joint of the displacement input end and the four sloping sides of the triangle displacement zoom and the joint of the displacement output end and the four sloping sides; the displacement input end of each triangle displacement zoom is provided with a positioning step. Two-stage micro-displacement amplification mechanism provided with by the invention has the advantages of zero friction, zero clearance and zero delay, and is easy to maintenance and service; the mechanism avoids oversized elastic counterforce caused by structural distortion, ensures direction stabilization of the displacement output; the displacement enlargement ratio of the two-stage displacement amplification is greatly improved, and the mechanism has very high practicability.
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Description

technical field

[0001] The invention relates to a micro-displacement amplification mechanism, which belongs to the field of mechanical quantity precision drive, and is suitable for the frictionless and hysteresis-free amplification of the output displacement of the micro-displacement drive mechanism, especially for the micro-displacement of intelligent micro-displacement drive elements such as piezoelectric and magnetic output amplification. Background technique

[0002] Micro-displacement driving components, such as those based on intelligent materials such as piezoelectric and magnetostrictive, are widely used in mechanical and electronic fields such as instruments and precision machine tools because of their superior precision driving and positioning performance. However, this type of driving element can only provide micron-level working strokes, which often cannot meet the needs of practical applications. In order to overcome this shortcoming, a displacement amplificati...

Examples

Embodiment 1

[0031] Embodiment 1, two-stage micro-displacement amplification mechanism, refer to Figure 4~Figure 7 : There are two triangle displacement scalers, which are respectively the first-level triangle displacement scaler 6-A and the second-level triangle displacement scaler 6-B; each triangle displacement scaler consists of four hypotenuses 6-1, 6- 2, 6-3, 6-4 are formed; the input end 2 of the first-stage triangular displacement scaler 6-A is connected with the drive element 1; the output end 3 of the first-stage triangular displacement scaler 6-A is connected to the second-stage triangle The input 2 of the displacement scaler 6-B is connected. The connection between the four hypotenuses 6-1, 6-2, 6-3, 6-4 of the triangle displacement scaler and the displacement input terminal 2, and the four hypotenuses 6-1, 6-2, 6-3, 6- 4 and the displacement output end 3 are all provided with flexible hinges 4; the displacement input end of each triangular displacement scaler is provided wit...

Embodiment 2

[0032] Example 2, in Figure 8 In the embodiment of the invention, the driving element 1 and the single-stage micro-displacement amplification mechanism 6 can be glued together directly. When in use, when the driving element 1 outputs displacement, through the amplification effect of the single-stage micro-displacement amplifying mechanism 6, an amplified displacement output can be obtained at the output end of the single-stage micro-displacement amplifying mechanism 6.

Embodiment 3

[0033] Example 3, in Figure 9 , Figure 10 In the embodiment of the present invention, the drive element 1 is first connected to the single-stage micro-displacement amplification mechanism 6-A, and then the single-stage micro-displacement amplification mechanism 6-A is connected to the single-stage micro-displacement amplification mechanism 6-B, and the two are orthogonal Join placement. The method of use is the same as that of the single-stage micro-displacement amplification mechanism.