Bayonet Lock Workpiece Clamping System with Movable Projections
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Solution Overview
Problem
Existing workpiece clamping systems for machine spindles lack rapid and high-precision fixing mechanisms with simple construction, and are not suitable for power-operated clamping devices due to limited retaining force and complex designs.
Innovation Solution
A bayonet lock system with movable projections and locking means that provides a strong, secure fixing force through rotary movement, combined with a clamping ring and screw mechanism for enhanced positioning accuracy and ease of use, allowing integration with machine power clamping devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional bayonet lock is used for rapid clamping, then the fixing speed is improved, but the fixing force and positioning accuracy are insufficient
Solution Approach 1:
The patent combines a bayonet lock mechanism with additional locking means (screw locking or positive locking) to merge the advantages of rapid fixing with enhanced fixing force. The bayonet lock provides quick initial engagement while the additional locking means reinforces the connection to achieve sufficient fixing force for power-operated clamping devices.
Solution Approach 2:
The locking means are designed to be movable during the locking process and then fixed in position. The screw or positive locking mechanism can be actuated to engage additional locking elements that reinforce the bayonet lock connection, transitioning from a simple rotational lock to a multi-point secured connection.
2Ease of operation
If a conventional bayonet lock is used for rapid clamping, then the simplicity of operation is improved, but the positioning accuracy deteriorates
Solution Approach 1:
The bayonet lock performs preliminary engagement and rough positioning quickly through rotational movement. Subsequently, the locking means are activated to provide final precise positioning and secure locking, ensuring high positioning accuracy while maintaining operational simplicity through automated or assisted locking sequences.
3Strength
If multiple clamping devices are used to increase retaining force, then the fixing force is improved, but the device complexity increases
Solution Approach 1:
Instead of using multiple separate clamping devices, the patent merges multiple locking functions into a single integrated locking mechanism. The combination of bayonet lock with additional positive locking or screw locking elements provides enhanced retaining force while maintaining a unified, compact structure that does not increase overall system complexity.
4Adaptability or versatility
If known zero clamping systems are used, then the adaptability to different clamping systems is improved, but the construction complexity increases
Solution Approach 1:
The locking mechanism is designed with universal applicability to work on standard machine spindle interfaces while providing multiple locking functions. The bayonet lock with additional positive locking or screw locking capabilities can accommodate various clamping device types and configurations, achieving versatility through a standardized yet multi-functional design.
Data Source
AI summary
A workpiece clamping system with a machine spindle and a clamping chuck has a bayonet lock with projections. The bayonet lock is closed by insertion and turning. The bayonet lock can be clamped or locked, whereby parts of the projections are movable and exert a locking force on the other projections. A bayonet lock can be placed internally or externally on the workpiece clamping system.