Scanning Unit Pre-Tensioning for Precise Gap Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing scanning units for position measuring devices are not compact, cost-effective, and do not facilitate simple assembly with high accuracy due to inadequate fixation methods.
Innovation Solution
A scanning unit with flexible elements that extend through through-holes in the housing, forming a pre-tensioning device to press the unit against a reference element, ensuring a predetermined contact force for precise assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional fixation methods are used for the scanning unit, then assembly is simpler, but assembly accuracy and positioning precision deteriorate
Solution Approach 1:
The flexible elements are pre-installed in the housing with fastening elements engaged, creating a pre-assembled unit that maintains scanning unit position and pressing force throughout the assembly process. This preliminary action eliminates positioning errors that would occur during final assembly.
Solution Approach 2:
The flexible elements are designed to generate a specific pressing force parameter when activated by tightening the fastening elements. This controlled parameter change ensures the scanning unit is pressed against the reference element with the correct force for high-precision assembly.
2Manufacturing precision
If manual pressing is used during assembly, then the process is simpler, but assembly accuracy deteriorates due to improper pressure
Solution Approach 1:
The flexible elements automatically generate the required pressing force when the fastening elements are tightened, eliminating the need for manual pressing operations. The system self-regulates the force application, ensuring consistent and accurate scanning gap formation without operator intervention.
3Ease of manufacture
If the scanning unit design is simplified, then manufacturing cost decreases, but assembly accuracy deteriorates
Solution Approach 1:
The flexible elements and fastening elements are combined into an integrated pre-tensioning device that performs both attachment and pressing functions. This merging reduces the number of separate components needed while maintaining high positioning precision through the coordinated action of the combined elements.
Solution Approach 2:
The flexible elements serve multiple functions: they act as structural support members, force transmission elements, and positioning references. This multi-functionality reduces the total component count and manufacturing complexity while maintaining the precision required for accurate scanning gap formation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simple, accurate assembly of a position measuring device with a compact and cost-effective scanning unit, ensuring a precise scanning gap without manual errors.
Implementation Method 1
The flexible elements are elastically deformable. For example, the flexible elements are made of silicone or rubber.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a scanning unit (10) of a position measuring device (100). The scanning unit (10) comprises a housing (12), several through-openings (14) arranged in the housing (12) for attaching the scanning unit (10) to an object (1), and several fastening elements (16) extending through the through-openings (14). The scanning unit (10) has several flexible elements (18). The flexible elements (18) extend at least partially through the through-openings (14). The flexible elements (18) are designed to press the housing (12) of the scanning unit (10) against a reference element (2).