Chuck Device Independent Collet Control
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Solution Overview
Problem
Conventional chuck devices with interconnected collets by a single rigid body, such as a pull rod, face issues in holding workpieces of different diameters simultaneously, leading to reduced machining precision and production capacity due to synchronized operation and limited opening degrees.
Innovation Solution
A chuck device with independent hydraulic driving mechanisms for front and rear collets, allowing differential opening degrees and enabling simultaneous clamping of workpieces with different diameters through a driving ring and driving sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the front and rear collets are interconnected by a single rigid body (pull rod), then the collets can open and close in a synchronous manner, but the opening degrees of the front and rear collets are forced to be the same, which prevents firm holding of workpieces with different diameters
Solution Approach 1:
The patent divides the single rigid pull rod into separate driving mechanisms for the front collet and rear collet. The front collet is driven by a front pull rod connected to the driving seat, while the rear collet is driven by a rear pull rod connected to the driving ring. This segmentation allows each collet to have independent opening degree control, enabling them to hold workpieces of different diameters simultaneously while maintaining synchronous operation capability.
2Device complexity
If the front and rear collets are interconnected by a single rigid body, then the structure is simple, but the production capacity is reduced because the collets cannot machine two workpieces having different diameters at a time
Solution Approach 1:
The patent segments the driving mechanism into a driving seat for the front collet and a driving ring for the rear collet, allowing independent operation of each collet. This enables the chuck device to process two workpieces of different diameters simultaneously, thereby increasing production capacity despite the increased structural complexity.
Solution Approach 2:
The patent introduces adjustable connecting rods with adjustable lengths between the driving mechanisms and collets. This dynamic adjustment capability allows the system to adapt to different workpiece diameters and processing requirements, enabling flexible operation modes that maximize productivity while managing structural complexity.
3Ease of operation
If the front and rear collets are interconnected by a single rigid body, then the mechanism is simple to operate, but machining precision is affected adversely due to workpiece sway when operating at high speed
Solution Approach 1:
The patent separates the driving mechanisms for front and rear collets, allowing independent adjustment and optimization of each collet's clamping force and opening degree. This segmentation enables precise control of each workpiece, eliminating the workpiece sway problem that occurs with interconnected collets during high-speed operation, thereby improving machining precision while maintaining ease of operation.
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
The solution allows for precise and firm holding of workpieces with different diameters, enhancing machining precision and production capacity by enabling independent operation of the collets.
Implementation Method 1
the driving ring and the driving sleeve are movable toward or away from each other along the axis (L) in response to a hydraulic pressure
Data Source
AI summary
A chuck device includes front and rear collets, a driving ring, and a driving sleeve. The driving ring and the driving sleeve can be driven hydraulically to move toward or away from each other. When the driving ring and the driving sleeve are moved hydraulically away from each other, each of the front and rear collets is moved to a release position, when the driving ring and the driving sleeve are moved hydraulically toward each other, each of the front and rear collets is moved to a clamping position.