Multi-Axis Clamping Layout for Precise Workpiece Positioning
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Solution Overview
Problem
Existing clamping devices face challenges in achieving high positioning accuracy and simplicity in configuration, particularly due to inaccuracies in rotary degrees of freedom and complex fluidic force transmission units.
Innovation Solution
A clamping device with linearly movable clamping bodies arranged to intersect at multiple points, utilizing a mechanical operating device that applies force components in two spatial directions, eliminating the need for fluidic force transmission and ensuring precise positioning through oblique orientation and self-locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If longitudinal axes of clamping bodies intersect at a single common point, then the configuration is simple, but positioning accuracy deteriorates due to remaining inaccuracies in rotary degrees of freedom
Solution Approach 1:
The patent transitions from a single-point intersection configuration to a multi-point intersection configuration of the longitudinal axes of clamping bodies. By defining multiple intersection points instead of one common point, the system eliminates inaccuracies in rotary degrees of freedom that would otherwise remain around a single intersection axis, thereby improving positioning accuracy while maintaining reasonable configuration complexity
2Productivity
If a common hydraulic cylinder or rotor with multiple curved surfaces is used to move clamping bodies, then all clamping bodies can be actuated simultaneously, but the device complexity increases due to fluidic force transmission units
Solution Approach 1:
The patent replaces complex fluidic force transmission units (hydraulic cylinders or rotors with curved surfaces) with a simpler mechanical operating device. This operating device includes an operating body that can be displaced in a first direction and has operating surfaces oriented in different directions, allowing simultaneous actuation of multiple clamping bodies through mechanical force components in two spatial directions without requiring complex fluid transmission systems
Data Source
AI summary
The invention relates to a clamping device and is designed for releasably clamping a supporting body on which a workpiece can be arranged. The clamping device has a main body with receiving bores each for receiving a clamping bolt of the supporting body. Each clamping body can be moved linearly along the longitudinal axis thereof between a clamping position and a release position. The movement from the release position into the clamping position and/or conversely from the clamping position into the release position can be effected by means of an actuation device. Each clamping body has a clamping end which protrudes into an associated receiving bore in the clamping position. The longitudinal axes of the clamping bodies form a plurality of intersection points in a common projection plane parallel to which the longitudinal axes extend. In a preferred embodiment, at least three or four intersection points are formed. More particularly, four clamping bodies can be present, each with a longitudinal axis, wherein four intersection points are formed, in each of which two of the available longitudinal axes intersect.