Tilting Circular Table Device Backlash Elimination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tilting circular table devices for machine tools have complex differential mechanisms that require significant labor for maintenance and suffer from backlash issues, leading to inaccurate angular control of the circular and tilting tables.
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 precise angular control without rotating the circular table when the tilting table is tilted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a differential mechanism with many gears is used to achieve precise angular control, then the gear ratio can be accurately obtained, but backlash generates among meshed gears and accuracy in angle of angular rotation cannot be improved
Solution Approach 1:
The patent extracts and eliminates the complex differential mechanism with multiple meshed gears from the system. Instead of using a differential mechanism to combine rotations, the invention directly couples the tilting table rotation to the circular table rotation through a simplified transmission mechanism, removing the source of backlash while maintaining the required gear ratio functionality.
Solution Approach 2:
The patent replaces the mechanical differential mechanism with a simplified transmission system that directly transmits rotation from the tilting table to the circular table. This substitution eliminates the meshed gears that cause backlash while achieving the same functional outcome of coordinated rotation.
2Adaptability or versatility
If a differential mechanism with many gears is used to combine rotation axes, then a predetermined gear ratio can be obtained, but the structure inside becomes complicated and maintenance becomes difficult
Solution Approach 1:
The patent removes the differential mechanism entirely from the system, extracting the source of maintenance complexity. The simplified transmission system requires far less maintenance while still achieving the necessary gear ratio through direct transmission from the tilting table to the circular table.
3Ease of operation
If the tilting table is angularly rotated by the tilting table drive motor, then the circular table can be tilted, but the circular table rotates along with the tilting table due to the differential mechanism
Solution Approach 1:
The patent introduces an intermediary transmission mechanism that decouples the unwanted rotation from the desired tilting motion. This intermediary system allows the tilting table to rotate independently while controlling the circular table's rotation through a separate, synchronized transmission path, preventing the circular table from rotating along with the tilting table.
Data Source
AI summary
A tilting circular table device includes: 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.