Automatic Positioning Collet Chuck with Pneumatic Actuation
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Solution Overview
Problem
Existing chuck designs for machine tools require manual operation to position and lock collets, which is inefficient and not suitable for automated or high-speed applications.
Innovation Solution
A chuck with automatic positioning collet that uses gas passages to drive a piston, slidable sleeve, and elastic piston pin assembly to advance and retract the collet, enabling automatic positioning through pneumatic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used to position and lock the collet (screw or two nuts), then the structure is simple, but the operation efficiency is low and it is not suitable for automated applications
Solution Approach 1:
The patent applies pneumatic principles by using compressed gas introduced through first and second gas passages to drive a piston back and forth. The piston connects to a slidable sleeve that holds the collet, enabling automatic advancement and retraction of the collet without manual operation. This pneumatic system replaces the manual screw or two-nut mechanism, significantly improving operation efficiency and enabling automated workshop applications while accepting increased structural complexity.
2Measurement precision
If manual screw or two-nut mechanism is used for positioning, then the device structure is simple, but the positioning precision and speed are insufficient for high-speed applications
Solution Approach 1:
The pneumatic positioning mechanism uses controlled gas pressure to advance the piston and slidable sleeve to precise positions. The first gas passage drives the piston forward to position the collet accurately, while the second gas passage retracts it. This pneumatic system provides faster and more precise positioning compared to manual mechanisms, meeting the requirements of high-speed applications despite the increased complexity of the positioning mechanism.
3Extent of automation
If manual operation is used to advance and retract the collet, then the energy consumption is low, but the automation level is insufficient
Solution Approach 1:
The patent implements automation through a pneumatic system where compressed gas is introduced through controlled gas passages to automatically advance and retract the collet. The piston converts pneumatic energy into mechanical motion, enabling fully automated operation without manual intervention. This increases the automation level to meet modern workshop requirements, while the energy consumption is managed through controlled gas introduction and system design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables automatic and precise positioning of the collet, improving efficiency and suitability for modern automated workshops by eliminating the need for manual operation.
Implementation Method 1
Gas introduced into the first gas passage connector drives the piston, so as to cause the slidable sleeve and the collet to move rearward and the tapering hole loops up the collet and the object tightly and the gas simultaneously drives the elastic piston pin assembly to position the positioning groove of the collet
Implementation Method 2
Gas introduced into the second gas passage connector drives the piston so as to cause the slidable sleeve and the collet to move frontward and the tapering hole releases the collet and the object. A spring of the elastic piston pin assembly returns the elastic piston pin assembly to the original position
Implementation Method 3
the tapering hole loops up the collet and the object tightly
Implementation Method 4
A spring of the elastic piston pin assembly returns the elastic piston pin assembly to the original position to thereby releasing positioning
Data Source
AI summary
A chuck with automatic positioning collet is provided. The chuck includes a rotation member, over which a stationary member is sleeved. A piston is arranged inside the rotation member by means of a slidable sleeve that includes an internal thread screwed to an external thread of a collet. The rotation member includes an elastic piston pin assembly selectively alignable with a positioning groove of the collet. The stationary member is provided with two gas passages through which gas introduced may drive the piston to move in opposite directions so as to move the slidable sleeve and the collet in opposite directions to cause a tapering hole of the rotation member to loop tightly up or release the collet and an object received in the collet and the gas simultaneously drives the elastic piston pin assembly to position the positioning groove of the collet.