Gear base tangent length, normal pitch and deviation measurement method and system

Abstract

The invention discloses a method and a system for measuring the length, normal pitch and normal pitch deviation of a gear common normal, which are used for measuring an involute spur gear. The system, which initiates the software for realizing the method, comprises an image system and a data processing system; wherein, the data processing system comprises a central processing unit, an input device connected with the signal of the central processing unit, a memory, a monitor and an output interface; the image system is connected with the signal of the central processing unit. The method comprises: inputting the gear profile to the coordinate system of the data processing system by the image system; selecting two adjacent addendum points, a dedendum point between the two points and another addendum point; capturing the coordinates of the selected points; calculating the coordinates of the gear center, trans-number of teeth and other gear parameters; fitting the gear contour line; drawing a base circle; coinciding the measured origin of the coordinate system and the gear center; calculating the gear normal pitch, the deviation thereof and the length of the gear common normal; selecting gear teeth and outputting the measured results. The method and the system greatly improve the measuring accuracy and efficiency of the involute spur gear and are simple and convenient to be used.

Description

Technical field [0001] The present invention relates to a gear parameter measurement system and a method for measuring gears using the system. More specifically, it relates to a method and system for measuring the common normal length, pitch and pitch deviation of a gear. Background technique [0002] Gears are indispensable and important parts of mechanical equipment. The accuracy of gears is the most basic factor that determines the accuracy of machine equipment. In order to ensure the manufacturing accuracy of gears, not only precise gear manufacturing equipment and production processes are required, but also accurate gear parameter measurement methods are required. Only by accurately measuring gear dimensions and grasping the deviations in gear production can the gear production process be effectively controlled. Ensure that the manufacturing accuracy of gears meets design requirements. [0003] Among the many parameters of the gear, the common normal length (span of th...

AI Technical Summary

Problems solved by technology

[0005] 1. The special measuring instrument is expensive, the method of use is complicated, and the measurement accuracy is usually within 10 microns;

[0006] 2. Through manual measurement, due to the technical proficiency of the measurement personnel and operational reasons, the measurement results have errors caused by manual factors;

[0007] 3. The measurement of a parameter needs multiple operation steps to complete, the measurement speed is slow and the efficiency is low

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