Advances in Machine Tool Design and Research 1967. by S. A. Tobias and F. Koenigsberger (Eds.) PDF

By S. A. Tobias and F. Koenigsberger (Eds.)

ISBN-10: 0080126294

ISBN-13: 9780080126296

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Additional info for Advances in Machine Tool Design and Research 1967. Proceedings of the 8th International M.T.D.R. Conference (Incorporating the 2nd International CIRP Production Engineering Research Conference), the University of Manchester Institute of Science and Techno

Sample text

For the Errorcomp procedure to be of wide use it must be self-sufficient, in that when declared and called into a main programme it does not depend on any compatibility with the declared variables in that programme. This means that the programmer could compile a programme to calculate the coordinates on a profile and use the compensation procedure in it without the procedure being dependent on certain declarations made in the main programme. Thus the programmer will call in the procedure and knowing the machine tool to be used, will input the correct CELLS and constants to procedure from a standard subroutine library.

The fluctuation in compensation error was due to the mavoidable approximations when formulating the equations from the original graphical esults. However, it can be assumed that with the compensated programme, profiles could 718 D . FRENCH and S. H . π^ X s computer programme using 3 / 8 m. dia. c u t t e r \ * A (b) FIG. 7. OOOS in. —an accuracy improvement factor of 10. {b) Internal Circular Profile Test When the output from the compensated programme was compared with the uncom­ pensated output, it could be seen that the compensation was effective generally at the changes in direction, due to the backlash compensation.

2 as mounted on the machine. Again the size is a problem. These instruments are not yet commercially available. Deviation of travel from a straight line is sensed in one plane only, which is adequate for this installation. The Unearity and drift are better than required for most machine tool applications. The precision is limited by air turbulence noise, which can be filtered to the desired level as with the autocolUmator. The optical axis of the alignment interferometer must be made parallel to the mechanical Automatic Error Correction Permits Conversion of 66 Inch Boring Mill 733 axis of the machine, but defining a non-straight mechanical axis presents a problem.

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Advances in Machine Tool Design and Research 1967. Proceedings of the 8th International M.T.D.R. Conference (Incorporating the 2nd International CIRP Production Engineering Research Conference), the University of Manchester Institute of Science and Techno by S. A. Tobias and F. Koenigsberger (Eds.)


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