3D scanner for toothed part

THE SOLUTION PROVIDED BY LF TECHNOLOGIES

Our client specializes in the design, manufacture and distribution of power transmission products and services, including high quality couplings.

Main functions

Objective

Checking the hobbing geometry of a toothed part, in order to be able to detect any drift and correct the machining parameters, directly on the production line.

PROBLEMATIC ISSUES

This type of part is difficult to control by conventional systems (e.g. coordinate measuring machines), especially in a time short enough to be integrated into the production line. In addition, during machining, the test pieces are lubricated, resulting in increased gloss, so measurements by optical systems are difficult.

SOLUTION AND RESULT

The test bench developed by LF Technologies is designed to measure turning parts with external teeth, and having an internal reference diameter, in order to control:

• Global defects (concentricity of tooth tops and bottoms, tooth crowns, etc.).
• Local defects (tool breakage, circularity, etc.).

Our teams of engineers proposed a high-precision and high-frequency laser scanning measurement system, combined with software for automatic processing of the results.

Measurements are carried out in less than a minute, and automatically analysed in order to produce a detailed results report, associated with machining adjustment parameters.
The part to be controlled is fixed on a turntable using a specific adapted tooling. It is scanned according to a program chosen by the operator, by a laser sensor.

The set of scanned points describes a volume in space. It is the analysis of the measurements by the program that enables the extraction, from this cloud of points, of values for concentricity, parallelism, shape defects, etc.
This 3D scanner is a control test bench integrated into a production line. It is designed to control 100% of the production.