Special automatic regulating device for taper error of centerless internal grinding machine

Abstract

The invention discloses a special automatic regulating device for the taper error of a centerless internal grinding machine. According to the device, a PLC (1) is connected with a grinding wheel shaft step motor driver (2), a grinding wheel motorized spindle driver (3), a taper regulating step motor driver (4) and a touch display screen (5) respectively; a taper regulating step motor (6) is connected with a taper regulating worm (7); the taper regulating worn (7) is connected with a taper regulating worm wheel (8), a part of a rotatable workpiece table (9); the rotatable workpiece table (9) is provided with a rotating shaft (10); and a grinding wheel (15) is mounted on a grinding wheel motorized spindle (16). According to the device, when the centerless internal grinding machine conducts grinding machining, corners of the workpiece table can be automatically quantificationally adjusted through the PLC, the step motors and the like according to the taper error of a machined work piece to guarantee that the taper error of the machined work piece is within a tolerance range.

Description

Technical field [0001] The invention relates to a taper error automatic adjustment device for a centerless internal grinder. Background technique [0002] In modern grinding processing, internal grinding has always been considered difficult, especially for the processing of tiny holes. Not only the processing cost is high, but also the processing accuracy is very high. Existing internal grinding machines generally complete internal grinding by the radial feed of the workpiece table. When the workpiece is found to have a large taper error through offline detection, it is usually performed by manually rotating the bolt behind the workpiece table. Adjustment, which depends to a large extent on the experience ability of the operator. Due to the lack of a quantitative control method, it often takes many trials to achieve the purpose of adjustment, which makes the adjustment efficiency low and the quality difficult to effectively guarantee. For this reason, we consider inventing a s...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the CN2915371Y utility model patent proposes a taper adjustment device for a grinding wheel dresser, which is used to adjust the grinding wheel dresser on a machining grinder so that it can dress the grinding wheel to the required taper for processing workpieces; CN101829932A invention patent proposes a fully automatic CNC roll grinder grinding wheel spindle variable angle automatic control system, the system can automatically control the angle of the grinding wheel spindle, so that during the grinding process, the working surface of the grinding wheel is always tangent to the roll surface; CN101462255A The invention patent proposes a method and system for automatically adjusting position and attitude errors in the grinding process. The method and system proposes to use angular displacement sensors and linear displacement sensors to detect the position and attitude of the workpiece, and adjust the position and attitude of the workpiece through the actuator. However, this detection method needs to suspend the machining process, control the workpiece to touch the contact axis and push the contact axis to move, and then indirectly detect the position and posture of the workpiece by detecting the movement of the contact axis. Not only the process is complicated, but also the production efficiency is reduced, and the workpiece moves It is difficult to guarantee the repeated positioning accuracy of the latter; JP05208350A invention patent proposes a method and device for automatic taper grinding. Grinding; JP10230458A invention patent proposes a taper grinding device, which uses a contactor to touch the workpiece to measure the position of the workpiece, and then calculates the feeding path of the grinding wheel according to the set taper and diameter. Relative motion completes taper grinding

None of the above patents can realize the automatic adjustment of taper error on the centerless internal grinding machine

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