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Inspection method of worm gear

A technology of worm gears and gears, applied in the field of worm gear inspection, can solve the problems of unreliable inspection and failure to ensure good quality of screws, etc., and achieve high-fidelity results

Active Publication Date: 2022-01-18
TORNERIA FERRARO SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Also, these types of inspections are not very reliable and do not guarantee good quality screws

Method used

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  • Inspection method of worm gear
  • Inspection method of worm gear
  • Inspection method of worm gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] refer to Figure 6 , the method of the present invention provides for analyzing the tooth profiles of four different worms 1 . The tooth profile to be analyzed is:

[0021] actual tooth profile (PR),

[0022] Measured Tooth Profile (PM)

[0023] Main tooth profile (PP)

[0024] Surface Analysis Profile (SA)

[0025] actual tooth profile

[0026] The actual tooth profile (PR) is identified by the measuring machine 2, considering the plane containing the gear shaft 1. The actual tooth profile (PR) is given by the intersection of the outer flank of the gear with the plane containing the gear axis.

[0027] measured tooth profile

[0028] After identifying the actual tooth profile (PR), the control needle 3 scans the actual tooth profile (PR) to obtain the measured tooth profile (PM). The actual tooth profile (PR) is therefore mechanically filtered according to the radius of the probe. The measured tooth profile (PM) represents the deviation from the theoretica...

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PUM

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Abstract

The invention relates to an inspection method of a worm wheel, comprising the steps of: identifying the actual tooth profile (PR) of a worm wheel (1) to be inspected; scanning the actual tooth profile (PR) to obtain a measured tooth profile (PM), using a low-pass The filter (4) filters the measured tooth profile (PM) to obtain the main tooth profile (PP), and the high-pass filter (5) filters the main tooth profile (PP) to obtain the surface analysis tooth profile (SA) , three parameters (SAa; SAq; SAp) are calculated from the surface analysis tooth profile (SA), and compared with the three parameters (SAa; SAq; SAp) with preset thresholds (TSa; TSq; TSp) to This worm gear is not used when at least one parameter exceeds the corresponding threshold.

Description

technical field [0001] The present patent application for industrial invention relates to a method of inspection of worm gears. Background technique [0002] Several methods are known for inspecting worm gears to assess pending engagement. These methods of the prior art provide for installing screws in the kit and using conventional instruments to analyze the performance and noise level of the kit. [0003] Obviously, these inspection methods of the prior art are long, cumbersome and complicated because of the need to install the screw on the assembly line and observe whether the screw passes the test. The screw is then removed from the assembly line and sent to production or rejected based on test results. [0004] Also, these types of inspections are not very reliable and do not guarantee good quality screws. Contents of the invention [0005] The purpose of the present invention is to eliminate the drawbacks of the prior art by disclosing a practical, efficient, mult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/20
CPCG01B21/20G01M13/021G01B5/202F16H55/0806
Inventor R·奇米内罗
Owner TORNERIA FERRARO SPA