Tilting Circular Table Follower Mechanism for Backlash-Free Angle Control
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Solution Overview
Problem
Conventional tilting circular table devices for machine tools have complex differential mechanisms that lead to accuracy issues in angular control due to backlash and require significant maintenance, making them unsuitable for precise angular operations.
Innovation Solution
A tilting circular table device with a follower mechanism that prevents relative rotation between the input shaft and tilting table, using a simple constitution with belts, gears, or cranks to ensure accurate angular control by synchronizing the rotational angles of the tilting table and input shaft, thereby preventing the circular table from rotating when the tilting table is tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a differential mechanism with multiple gears is used to combine rotation axes and achieve predetermined gear ratio, then the circular table can be tilted without rotating or rotated without tilting, but the structure inside the differential mechanism becomes complicated and maintenance labor increases greatly
Solution Approach 1:
The patent extracts and eliminates the complex differential mechanism from the system. Instead of using multiple meshed gears to achieve the differential function, the invention uses a follower mechanism that simply follows the tilting table's angular position to rotate the motor body, thereby removing the troublesome differential mechanism while maintaining the required functional relationship between tilting and rotation
Solution Approach 2:
The follower mechanism acts as an intermediary between the tilting table and the motor body. It transfers the angular position information from the tilting table to the motor body without requiring complex gear mechanisms, thus simplifying the overall structure while achieving the desired differential characteristic
2Reliability
If a differential mechanism with many meshed gears is used to achieve differential characteristic, then the circular table can be driven accurately, but backlash generates among the meshed gears and expands the dead zone range, reducing angular control accuracy
Solution Approach 1:
The patent replaces the mechanical gear meshing system with a follower mechanism that uses direct coupling or simple transmission elements. This substitution eliminates the backlash inherent in meshed gears while maintaining the differential functional relationship, thereby improving angular control precision
3Ease of operation
If the differential mechanism is designed with proper differential characteristic to prevent circular table rotation during tilting, then the desired motion control is achieved, but the mechanism becomes complicated and difficult to maintain
Solution Approach 1:
The patent removes the complex differential mechanism from the system and replaces it with a simple follower mechanism. This extraction maintains the ability to control motion precisely while making the system much easier to maintain, as the follower mechanism has fewer moving parts and no complex gear differentials to service
Data Source
AI summary
A tilting circular table device comprises: a frame; a tilting table supported on the frame so as to angularly rotate about a first axis; a circular table disposed in the tilting table so as to angularly rotate; an input shaft for rotating the circular table and disposed on the tilting table so as to angularly rotate about a second axis; a drive motor having an output shaft for rotating the input shaft and angularly rotatable about the third axis; and a body portion attached to the frame so as to angularly rotate about the third axis; and a follower mechanism for making the body portion driven about the second axis, following rotation of the tilting table.