摘要:
There is disclosed a system for visually measuring the cross-sectional thickness of a light-reflective object, such as a vehicle wheel, said object having a plurality of curved surfaces. The system includes: means for transmitting a line of light onto each curved surface of the object at substantially the same cross-sectional area through the object; means for sensing the lines of light reflected from each curved surface and producing a plurality of signals thereby, said signals representing a linear profile of each curved surface at the same cross-sectional area; and means for comparing the profile signals from each curved surface for calculating a cross-sectional thickness of the object at one or more points along the same cross-sectional area. On a more preferred basis, this system further includes means for supporting the object, and means for rotating the object about at least one axis of support to measure a plurality of cross-sectional thicknesses thereof. Most preferably, the light transmittal means of this system include a plurality of light sources for transmitting collimated laser lines across the object's inner curved surfaces from opposite sides of the object substantially simultaneously. A method for inspecting a vehicle wheel to determine whether it is within dimensional specification is also disclosed. This method employs a system substantially as set forth above.
摘要:
There is disclosed an improved method for manufacturing wheels in a production line by: hot-shaping metal into wheel-shaped articles which are larger in some areas than the wheels to be formed and which have a plurality of complexly-curved inner and outer surfaces; cooling the wheel-shaped articles and removing excess metal from some areas of the wheel-shaped articles. The improvement comprises: inspecting at least some of the wheel-shaped articles at a plurality of points along a transverse plane through the inner and outer surfaces of each article being inspected and at a plurality of transverse plane locations about the perimeter of each such article with a contactless gauging system recently after the articles have been hot-shaped to determine whether the articles are within dimensional requirements to form a wheel therefrom. The improvement further comprises taking corrective action to the hot-shaping operation to minimize the number of unacceptable wheel-shaped articles that are being formed after finding an article which is not within dimensional requirements.