Auxiliary tooling for r-test detection of double swing head five-axis CNC machine tools

Abstract

The invention discloses an auxiliary tool for R-test detection of a double-swinging-head five-axis numerical control machine tool. The auxiliary tool comprises a cutter handle installing shaft, a horizontal connecting block, a vertical connecting shaft, a detection ball rod and a ball head adjusting block. The cutter handle installing shaft is suitable for being connected with the double-swinging-head five-axis numerical control machine tool. The horizontal connecting block extends in the horizontal direction, and one end of the horizontal connecting block is detachably connected with the cutter handle installing shaft. The vertical connecting shaft extends in the vertical direction, and the upper end of the vertical connecting shaft is detachably connected with the other end of the horizontal connecting block. The detection ball rod is detachably connected with the lower end of the vertical connecting shaft. The ball head adjusting block is detachably arranged at the lower end of the vertical connecting shaft so as to adjust the position of the detection ball rod. According to the auxiliary tool for R-test detection of the double-swinging-head five-axis numerical control machine tool in the embodiment, the vertical deviation and horizontal deviation of the ball center of a detection ball head can be adjusted at the same time by adjusting the length of the horizontal connecting block and the vertical connecting shaft, and then detection on errors of the space position of the detection ball head is achieved.

Description

technical field [0001] The invention relates to the field of mechanical instrument design and machine tool testing, in particular to an auxiliary tooling for R-test testing of a double-swing head five-axis numerically controlled machine tool. Background technique [0002] At present, the detection devices for the geometric accuracy of the oscillating axis of CNC machine tools mainly include commonly used dial gauges, pendulum angle meters, ballbars from Renishaw in the UK, R-test from IBS in the Netherlands, and HMS from Fidia in Italy. Among them, the R-test detection system can simultaneously detect the position error of the ball head in three orthogonal directions when the machine tool is doing RTCP movement, which provides a favorable tool for the detection and identification of the geometric error of the swing axis of the five-axis machine tool and the evaluation of the linkage dynamic accuracy . Therefore, based on the RTCP motion of the machine tool, the method of us...

AI Technical Summary

Problems solved by technology

However, for a double-swing head five-axis CNC machine tool, if the R-test detection system is directly used for geometric error detection or dynamic error diagnosis, the only way to adjust the length of the ball stick is to adjust the deflection of the ball in the vertical direction. Therefore, when performing geometric error identification, the number of identification equations is insufficient, and the identification matrix will be singular due to dissatisfaction of rank, resulting in the inability to identify all the geometric errors of the oscillating axis item

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