Machine Table Clamping Chuck with Self-Centering Toothed Locking
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Solution Overview
Problem
Existing clamping devices for machining metal components, particularly those made of iron-carbon alloys and non-ferrous metals, face challenges in maintaining precise positioning during and after clamping movements, leading to potential deviations in the machining axes X, Y, and Z.
Innovation Solution
The clamping device features a clamping chuck with a mechanically and pneumatically actuated lock, where the clamping plate and pallet are equipped with diagonally opposite toothed sections that interlock to create a self-centering, pyramid-shaped anchoring system, ensuring precise alignment and a rigid connection without play, using triangular or trapezoidal tooth cross-sections for optimal meshing and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional clamping devices are used, then the clamping mechanism can be actuated mechanically or pneumatically, but deviations in machining positions with respect to axes X, Y, and Z occur during or after clamping movements
Solution Approach 1:
The patent introduces toothed sections as an intermediary mechanism between the mounting plate and pallet. These toothed sections engage with each other to provide positive locking, preventing relative movement and ensuring that no deviation of machining positions occurs during or after clamping movements.
Solution Approach 2:
The toothed sections are divided into multiple segments distributed across the circumferential area of the mounting plate and pallet. This segmentation allows for distributed positive locking points that collectively prevent deviations in all three machining axes (X, Y, and Z) simultaneously.
2Manufacturing precision
If the clamping chuck is designed with a rigid connection system, then positioning precision is improved, but the complexity of the device increases
Solution Approach 1:
The patent combines the clamping function and positioning function into a single integrated toothed section engagement mechanism. The same toothed sections that provide clamping force also ensure precise positioning by preventing relative movement, thereby achieving rigid connection without adding separate complex positioning mechanisms.
Solution Approach 2:
The toothed sections automatically engage and disengage based on the clamping motion itself. When the mounting plate and pallet move relative to each other during clamping, the toothed sections self-align and lock into engagement, providing both clamping and positioning functions without requiring additional actuators or complex control systems.
Data Source
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AI summary
A clamping device (1) mounted on an adjustable machine table (40) of a machine tool intended for machining workpieces (2), with a mounting base (3) attached to the machine table (40), on which a mounting plate (5) forming a chuck (4) with the pallet (6) carrying the workpiece (2) is attached, to which a mechanically/pneumatically actuated locking and unlocking device (7) of the chuck (4) is preferably centrally assigned, wherein the end surfaces (19, 20) of the mounting plate (5) and the pallet (6) facing each other on a vertical axis of movement are located on their circumferential area.The edge area has at least four pairs of diagonally opposite, cooperating gear sections (21, 22) that interlock in a positive manner when the chuck (4) is closed.