Multi-Axis Clamping Structure for Precise Workpiece Positioning
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Solution Overview
Problem
Existing clamping devices lack precision and have complex constructions, leading to inaccuracies in positioning and potential loosening of clamped components.
Innovation Solution
A clamping device with a base body and multiple clamping bodies that intersect at multiple points, allowing for precise positioning and a simple mechanical actuating device that uses oblique alignment to apply force components in two directions, ensuring precise clamping without fluid power transmission and preventing accidental release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the longitudinal axes of clamping bodies intersect at a single common point, then the construction is simple, but positioning precision deteriorates due to remaining inaccuracies in rotational degree of freedom
Solution Approach 1:
The clamping bodies are divided into multiple groups, where each group has its own point of intersection. Instead of all clamping bodies intersecting at a single point, the system is segmented into multiple intersection points, which eliminates rotational degree of freedom inaccuracies and improves positioning precision while maintaining manageable complexity.
2Reliability
If fluid power transmission is used to actuate clamping bodies, then the actuating mechanism is compact, but reliability deteriorates due to potential leakage and maintenance requirements
Solution Approach 1:
The patent replaces fluid power transmission with a purely mechanical actuating device. The actuating device uses mechanical elements such as levers or linkages that are connected to the clamping bodies, eliminating the need for hydraulic or pneumatic systems. This substitution improves reliability by removing potential leakage points and maintenance requirements associated with fluid power systems, while the mechanical design remains compact and integrated into the base body.
3Manufacturing precision
If clamping bodies are arranged with multiple points of intersection, then positioning precision is improved, but the construction becomes more complex
Solution Approach 1:
The patent merges multiple clamping body groups into a single integrated clamping device structure. The base body integrates multiple receiving holes and clamping body groups, combining what could be separate devices into one unified system. This merging approach achieves high positioning accuracy through multiple intersection points while avoiding the complexity of multiple separate devices, as everything is integrated into a single base body with coordinated clamping bodies.
Data Source
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AI summary
The invention relates to a clamping device (11) and is designed for releasably clamping a supporting body (12) on which a workpiece (16) can be arranged. The clamping device (11) has a main body (28) with receiving bores (20) each for receiving a clamping bolt (18) of the supporting body (12). Each clamping body (36) can be moved linearly along the longitudinal axis (L) thereof between a clamping position (S) and a release position (F). The movement from the release position (F) into the clamping position (S) and/or conversely from the clamping position (S) into the release position (F) can be effected by means of an actuation device (52). Each clamping body (36) has a clamping end (53) which protrudes into an associated receiving bore (20) in the clamping position (S). The longitudinal axes of the clamping bodies (36) form a plurality of intersection points in a common projection plane parallel to which the longitudinal axes (L) extend. In a preferred embodiment, at least three or four intersection points are formed. More particularly, four clamping bodies (36) can be present, each with a longitudinal axis (L), wherein four intersection points (P1) to (P4) are formed, in each of which two of the available longitudinal axes (L1, L2) or (L3, L4) or (L1, L3) or (L2, L4) intersect.