Coordinate Measuring Machine Stylus Intermediate Element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coordinate measuring machines face challenges in accurately and reproducibly aligning stylus tips at inclined angles, leading to measurement errors and calibration issues due to the use of inaccurate clamping elements and unstable connections.
Innovation Solution
A one-piece intermediate element with a rotary coupling element and an inclined contact surface, featuring a pin or pin hole design, allows for precise and reproducible rotational alignment of the stylus, eliminating the need for separate stylus carriers and reducing manufacturing costs through simple production methods like face milling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional clamping elements are used to fix the stylus holder at an inclined angle, then the stylus can be positioned at the required angle, but the alignment precision and reproducibility deteriorate
Solution Approach 1:
The intermediate element is divided into functionally distinct components: a base body for mounting, a rotary coupling element for angular positioning, and a contact surface for stylus support. This segmentation allows each component to be optimized independently, with the rotary coupling element specifically designed to provide precise angular alignment through rotational engagement rather than frictional clamping.
Solution Approach 2:
The patent introduces a rotary coupling element that enables dynamic adjustment of the stylus holder's angular position during assembly, allowing precise alignment to be achieved through rotation rather than fixed frictional clamping. This dynamic positioning mechanism provides superior reproducibility compared to static clamping arrangements.
2Ease of operation
If frictional clamping elements are used to hold the stylus holder, then the stylus can be secured at an angle, but the reproducibility of alignment deteriorates
Solution Approach 1:
The patent replaces frictional clamping with a mechanical engagement system featuring a rotary coupling element that uses positive mechanical interlocking (such as gear teeth or engagement surfaces) to secure the stylus holder. This substitution eliminates the variability inherent in frictional contact, ensuring consistent and reproducible alignment across multiple assemblies.
3Measurement precision
If complex alignment procedures are performed after stylus replacement, then measurement accuracy can be maintained, but the time required for calibration increases
Solution Approach 1:
The intermediate element is pre-configured with the contact surface and rotary coupling element in precise geometric relationships during manufacturing. This preliminary alignment ensures that when the stylus is installed, the correct angular orientation is automatically achieved without requiring time-consuming post-assembly calibration procedures, thus maintaining measurement accuracy while minimizing calibration time.
4Adaptability or versatility
If multiple separate components are used for stylus mounting, then flexibility in design is improved, but device complexity increases
Solution Approach 1:
The patent merges the base body, rotary coupling element, and contact surface into a single integrated intermediate element. This consolidation reduces the number of separate components and assembly steps while maintaining the design flexibility needed for various stylus configurations. The unified structure eliminates interfaces between multiple components, reducing potential sources of misalignment and simplifying the overall system.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an intermediate element for arranging a stylus against the stylus carrier of a coordinate measuring machine, comprising a one-piece base body with a stylus end and a machine end. It is provided that the machine end is equipped with a coupling element and with means to ensure reproducible rotational alignment, and that the stylus end has a contact surface inclined fixedly relative to the axis of the coupling element, provided on a general spherical segment shape flattened by the contact surface, which is designed with a form-fit and/or friction-fit means for the form-fit and/or friction-fit engagement with a fastening end of the stylus in contact with the contact surface.