Rotary Peg Connection for Balanced Bidirectional Torque Transfer
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Solution Overview
Problem
Existing tool clamping systems face challenges in efficiently transmitting torques in both directions about an axis of rotation while minimizing setup times and preventing imbalance.
Innovation Solution
A connecting device comprising a positive connecting element with pegs arranged about a common center axis and a negative connecting element with a depression, allowing for secure rotation-based connection by inserting pegs into the depression and rotating to engage retaining portions, ensuring balanced torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw contour is used to connect connecting elements, then the direction of rotation is forced and releasing is prevented, but the setup time increases and imbalance must be compensated
Solution Approach 1:
The connection is divided into two independent functions: insertion (axial direction) and locking (rotational direction). The elevation can be inserted axially without rotation, and then locked by rotation, separating the connection steps and reducing setup time while maintaining reliability
Solution Approach 2:
The connecting elements transition from a loose inserted state to a locked state through rotation. The elevation can be freely inserted initially, then dynamically locked by rotating until the elevation engages with the retaining portion, reducing setup time while preventing releasing
2Reliability
If an off-center design is used to fix connecting elements during machining, then the connecting elements are fixed securely, but imbalance occurs requiring compensation
Solution Approach 1:
The elevation has an asymmetric cross-section with a sloped locking surface that engages with the retaining portion. This asymmetric design provides secure fixing through the locking mechanism while the overall symmetric arrangement of multiple elevations maintains balance
Solution Approach 2:
When multiple elevations are arranged symmetrically around the center axis, they counterbalance each other's centrifugal forces during rotation, eliminating the need for imbalance compensation while maintaining secure fixing
3Reliability
If ball thrust pieces are used for locking in radial grooves, then the connecting elements are locked securely, but the device complexity increases
Solution Approach 1:
The locking function is extracted from separate ball thrust pieces and integrated directly into the elevation structure itself. The elevation's cross-sectional shape provides the locking action, eliminating the need for additional ball thrust pieces and reducing device complexity while maintaining locking security
Solution Approach 2:
The locking function is merged with the elevation structure. The elevation serves both as the插入 element and as the locking element through its cross-sectional shape, reducing the number of components while maintaining secure locking
Data Source
AI summary
A connecting device may be provided comprising a positive connecting element and a negative connecting element, wherein the positive connecting element has an elevation arranged on a base surface and the negative connecting element has a depression introduced into a contact surface, into which the elevation of the positive connecting element can be introduced, wherein the positive and the negative connecting element may be connected to one another by rotation relative to one another.