External Spline Runout Gage Using Collet Clamping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Measuring the dimensional variation, particularly runout and total runout, of splined surfaces is challenging due to their non-smooth nature, which complicates the inspection and measurement processes.
Innovation Solution
A device comprising an indicator check body, a clamping device with a collet, an anti-rotation member, and an end cap is used to securely engage with the splined shaft, allowing for precise measurement of dimensional variations by compressing a collet around the splines and using a probe to measure radial and axial deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measurement methods are used on splined surfaces, then the measurement process becomes complicated and difficult, but the non-smooth surface nature causes measurement inaccuracies and challenges
Solution Approach 1:
The patent introduces an intermediary measurement system consisting of a dial indicator or digital indicator mounted on a standalone base. This intermediary device indirectly measures the dimensional variation of splined surfaces by detecting changes in distance to the surface through a contact tip, avoiding direct measurement challenges on the non-smooth splined surface while maintaining measurement accuracy
Solution Approach 2:
The patent replaces complex mechanical measurement systems with a simplified indicator-based system. Instead of using elaborate mechanical comparators or specialized splined surface measurement equipment, the invention uses a straightforward indicator mechanism that converts complex surface variations into readable dial or digital measurements, significantly reducing measurement difficulty
2Manufacturing precision
If runout and total runout measurements are performed on splined parts, then dimensional variation can be quantified, but the non-smooth surface creates challenges in obtaining accurate readings
Solution Approach 1:
The indicator mounted on a separate base serves as an intermediary that simplifies the inspection process. The operator simply needs to position the indicator near the splined surface and rotate the part, allowing the indicator to automatically track dimensional variations without requiring complex alignment or specialized techniques for splined surfaces
Solution Approach 2:
The measurement system is designed to be self-acting during rotation. As the splined part rotates, the indicator tip automatically follows the surface contours and records runout values without requiring continuous manual adjustment or intervention, making the inspection process easier and more consistent
Data Source
AI summary
A device and method for measuring dimensional variation of a part, particularly total runout, is provided. The device includes an indicator check body, a clamping device within the indicator check body and an end cap that engages the indicator check body and the clamping device. When the indicator check body and the clamping device are engaged, the device is secured to the part allowing dimensional variations to be measured along the surface of the indicator check body.