A method and devices for diameter - measurement on cylinders, spheres and cones with the aid of movable, and equally large balls

摘要

The in the length measurement technique known processes for the calibration by knives of the cylinders and cones or balls are so inaccurate or to costs - and work. The inventive method solves the problems in many. Dollars a most important element of the invention, three or more auxiliary toothed - balls (hk) with calibrated, very same diameters, the between the abovementioned concentrically arranged rotationally symmetrical elements and a further concentrically arranged rotationally symmetrical element (rf) with an axially acting measuring force (f) are clamped. Dollars a the representation shows a possible embodiment for the diameter on the inside cylinders (iz) or balls (k). With the pushbutton (1), the difference between the film for administering tpo iti in the case of contact of the ball (k) on the auxiliary balls (hk) and on the flat element (rf) - without the auxiliary balls - is measured and, from this, either the diameter of the inner cylinder or of the ball is determined. Dollars a in a similar manner, with the process, the diameter of the outside, cones, the inside tapers and outer cylinders measuring. Dollars a with the measuring process by knives are easily measurement uncertainties of a few tenths of a micrometers can be achieved.