Method of determining the boundaries of a measuring path of a gear flank testing apparatus and gear flank testing apparatus for performance of the method

摘要

A method of determining the boundaries of a measuring path of a tooth flank-testing apparatus, wherein a measuring feeler is arranged upon a cross-slide arrangement composed of an X-slide or carriage movable in the direction of the tooth width of a test piece and a Y-slide or carriage movable in the direction of the tooth height. Each carriage has associated therewith a X-drive and Y-drive containing X-servomotor and Y- servomotor, respectively, X- and Y-position transmitter and X- and Y- position regulator. Both drives can be selectively manually controlled or by a program-controlled computer, which processes apart from signals of the position transmitter also signals delivered by the measuring feeler itself in accordance with the deflection of its measuring head and interrupts the course of the program when the deflection exceeds a predetermined value. Connected with the computer is a memory or storage for the position data of a tooth addendum point and a tooth root or base point as boundaries of the measuring path of the feeler head which moves through a random number of tooth flanks. The feeler head is moved at the tooth addendum point and tooth base point, respectively, and the position data obtained by the measuring feeler is stored. The feeler head is moved at a random location between and in spaced relationship from two tooth flanks of the test piece, then the X-position regulator is connected with the measuring feeler while circumventing the computer, the feeler head is brought into contact by movements of the X-carriage controlled by the measuring feeler at random locations of one of these tooth flanks, and thus, deflected by the predetermined value, and the feeler head then is moved, by manually controlling the Y-slide while the X-slide is controlled itself by the measuring feeler, along the tooth flank to the tooth addendum point and/or the tooth base point.