Single-drive macro-micro mechanism based on screw drive and flexible mechanism
By combining a stepper motor-driven lead screw with a flexible mechanism, the problems of complexity and high cost of traditional micro-adjustment mechanisms are solved, achieving efficient and low-cost control of macro and micro two-level adjustment.
CN223690272UActive Publication Date: 2025-12-19BEIJING FORESTRY UNIVERSITY
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Patent Information
- Application Number
- CN202520062851.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Technical Problem
Traditional micro-adjustment mechanisms suffer from problems such as complex driving methods, complex structures, and high manufacturing costs.
Method used
A stepper motor drives the lead screw, which is combined with a flexible mechanism. The axial movement of the nut enables macro and micro-level adjustment. An electromagnet controls the clamping and fixing, thus achieving the switching between macro and micro movements.
Benefits of technology
It achieves large-stroke adjustment of macro motion and precise adjustment of micro motion, with a simple structure that reduces manufacturing and usage costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a single-drive macro-micro mechanism based on screw drive and a flexible mechanism, belongs to the technical field of precision displacement, and solves the technical problems that in the prior art, a macro-micro two-stage adjusting mechanism is multiple in drive device, complex in structure and high in manufacturing cost. The device comprises a stepping motor, a base, a linear bearing, a through hole cylinder, a circular ring electromagnet, a wedge-shaped ring, a movable circular ring, an inner nut, a connecting piece, a circular plug, an inserting piece, a baffle, a screw, a lead screw and a micro-motion flexible mechanism. The lead screw is driven by the stepping motor to rotate, and rotary motion is converted into linear motion of the inner nut by means of threaded fit of the lead screw and the inner nut, so that macro-motion adjustment is formed. The movable circular ring is attracted by the electromagnet to clamp the through hole cylinder and the base, the through hole cylinder and the base are relatively fixed, displacement input of the flexible mechanism is achieved through movement of the inner nut, and therefore micro displacement is output, and micro adjustment is achieved. According to the mechanism, macro-motion large-stroke adjustment and micro-motion high-precision adjustment can be achieved through single drive.
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