Single-Axis Clamping Jaw Layout for Precise Workpiece Fixturing
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Solution Overview
Problem
Existing clamping devices for workpieces in machining processes are complex, prone to component jamming, and costly, with limited flexibility and precision, and often require multiple force redirection systems that increase manufacturing costs and reduce reliability.
Innovation Solution
A clamping device with two clamping jaws and a clamping element that moves freely along a single axis, applying axial and radial forces directly to clamping bolts via force transmission surfaces, allowing for precise clamping without additional fixation, and accommodating different clamping plate formats through adjustable grid spacing and resilient bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex force redirection system with numerous clamping jaws is used to apply axial and radial forces, then the clamping precision is improved, but the device complexity and manufacturing cost increase significantly
Solution Approach 1:
The clamping device is segmented into two independent clamping jaws that can be positioned and adjusted separately. Each jaw can be independently regulated to apply forces to specific clamping bolts, allowing precise control over the clamping process while maintaining a relatively simple overall structure. This segmentation enables precise force application without requiring a complex multi-jaw system.
Solution Approach 2:
The clamping jaws are designed with adjustable parameters including position, orientation, and force magnitude. By changing these parameters, the device can adapt to different clamping requirements and workpiece configurations. The adjustable nature of the jaws allows precise force application while avoiding the need for fixed complex mechanical linkages.
2Force
If multiple friction surfaces are introduced through force redirection systems, then force transmission capability is improved, but the reliability decreases due to increased risk of component jamming
Solution Approach 1:
The invention extracts and eliminates the complex force redirection system with multiple friction surfaces from the clamping device. By using directly adjustable clamping jaws that can be positioned close to the workpiece, the design removes intermediate force transmission elements and their associated friction surfaces, thereby improving reliability while maintaining adequate force transmission capability.
Solution Approach 2:
The clamping jaws are pre-positioned and pre-adjusted to the optimal location before the clamping operation begins. This preliminary positioning allows the jaws to apply forces directly to the clamping bolts without requiring complex real-time force redirection through multiple surfaces, reducing the risk of jamming during the actual clamping process.
3Strength
If all clamping openings must be occupied by clamping bolts to prevent shear load on pins, then the structural integrity is improved, but the adaptability and ease of operation deteriorate
Solution Approach 1:
The clamping jaws are designed to be dynamically adjustable in position and can be selectively engaged with only the necessary clamping openings. This dynamic flexibility allows the operator to adapt the clamping configuration to different workpiece sizes and shapes without requiring all openings to be filled, while the adjustable design ensures that sufficient clamping force is always applied to maintain structural integrity.
Solution Approach 2:
The clamping device is designed with universal adjustability, allowing the same device to accommodate various clamping configurations and workpiece types. The jaws can be positioned at different locations and adjusted to apply appropriate forces regardless of which clamping openings are occupied, providing multi-functional capability while maintaining structural integrity through proper force distribution.
4Device complexity
If a fixed number of clamping jaws are used, then the device complexity is reduced, but the adaptability to different clamping plate formats is limited
Solution Approach 1:
The two clamping jaws are designed with multiple adjustable parameters including position along the clamping device, orientation angle, and force magnitude. By changing these parameters, the same simple two-jaw configuration can adapt to different clamping plate formats and workpiece configurations, providing high versatility without increasing device complexity.
Solution Approach 2:
The clamping jaws incorporate dynamic adjustment mechanisms that allow real-time repositioning and reconfiguration during operation. This dynamic capability enables a fixed-number jaw design to adapt to various clamping plate formats by adjusting jaw positions and angles, maintaining simplicity while achieving versatility.
Data Source
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AI summary
The invention relates to a clamping device, in particular for clamping workpieces for machining, comprising a clamping plate (100) which has a flat base surface (101) to be placed on the clamping surface (15) and at least two clamping and positioning bolts (110) which are assigned to the clamping openings (20) and which each have a positioning surface (113), and comprising a tightening device (50) which is designed to apply an axial force (Fax) and a superimposed radial force (Frad) to the clamping and positioning bolts (110).The invention proposes that the tightening device (50) has two clamping jaws (40) and a clamping means (30), wherein a force transmission surface (41) is provided on one of the clamping jaws (40) for each clamping and positioning bolt (110), wherein each clamping and positioning bolt (110) has a force absorption surface (111) for interacting with one of the force transmission surfaces (41), wherein the force transmission surfaces (41) of the clamping jaws (40) can be brought into contact with the force absorption surfaces (111) of the clamping and positioning bolts (110) and thereby the axial forces (Fax) and the radial forces (Frad) can be applied to the clamping and positioning bolts (110), wherein the clamping means (30) and the clamping jaws (40) can be displaced along a single fixed axis of movement (A).