Gear Skiving Tool Measurement Using Virtual Contact Point Scanning
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Solution Overview
Problem
Conventional measuring methods for skiving tools fail to accurately account for the complex, rounded cutting edge geometry and spatial curve of contact points during the skiving process, leading to measurement inaccuracies and increased production time due to the need for re-clamping and potential mounting errors.
Innovation Solution
A method and device that calculate and adjust the relative orientation and position of a measuring device to match a virtual cutting edge, allowing for precise measurement of the real cutting edge by simulating the contact points along the cutting edge's curvature, using a cylindrical probe or laser beam to tangentially scan the cutting edge, thereby accounting for the spatial curve and skewed axis arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional measuring machine is used to measure the cutting edge of a gear skiving tool, then the measurement can be performed, but the measurement precision is insufficient because the spatial curve of contact points during rolling motion is not accounted for
Solution Approach 1:
The patent replaces the conventional mechanical measuring machine with an optical measurement system using a laser beam and photodetector. This substitution enables non-contact measurement of the cutting edge while accounting for the spatial curve of contact points during rolling motion, thereby improving measurement precision without requiring complex mechanical adjustments
Solution Approach 2:
The patent changes the measurement parameters by considering the spatial curve of contact points that form during the rolling motion between the tool and workpiece. By calculating and measuring along this spatial curve rather than using static conventional measurement parameters, the system achieves higher precision in capturing the actual cutting edge geometry
2Productivity
If the tool is re-clamped between the machining machine and the measuring machine, then the measurement can be performed, but the productivity decreases due to time-consuming re-clamping and potential mounting errors
Solution Approach 1:
The patent merges the measurement function with the machining machine by integrating the optical measurement system directly into the machining center. This allows the tool to remain clamped in the same position for both machining and measurement operations, eliminating time-consuming re-clamping procedures and avoiding mounting errors while maintaining high productivity
Solution Approach 2:
The patent introduces an optical measurement system as an intermediary that can measure the cutting edge without physical contact or re-clamping. The laser beam and photodetector system serves as a mediator between the tool and the measurement process, enabling accurate measurement while the tool remains in its machining position
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 high-precision, automated, and cost-effective measurement of skiving tools, reducing measurement time and eliminating re-clamping errors by directly measuring the cutting edge at critical contact points, improving the accuracy and efficiency of the skiving process.
Implementation Method 1
using a cylindrical probe or laser beam to tangentially scan the cutting edge
Data Source
Figure 1~1a
Figure 2~3e
Figure 4~4a
AI summary
The invention relates to a method for measuring a tool (1) for roll machining toothed workpieces, wherein a virtual contact point is calculated on a rounded virtual blade of a virtual tool. The relative orientation between the tool axis (B) and the measuring device (11) as well as a translational relative position between the tool and the measuring device are then calculated and adjusted on the basis of the calculated virtual contact point. The measurement is taken on the real blade in the adjusted relative orientation and relative position, and the measurement can be taken in particular using a cylindrical scanning means in the form of a laser beam, wherein the cylindrical scanning means tangentially contacts the virtual blade in the virtual contact point.