Full-automatic numerical control thread grinding machine

Abstract

The invention relates to the field of numerical control thread grinding machines, in particular to a full-automatic numerical control thread grinding machine. The full-automatic numerical control thread grinding machine comprises a rack; a grinding head device fixedly mounted on the rack, wherein a grinding wheel is arranged on the grinding head device; and a workpiece main shaft and a tailstock, wherein a movable tip is arranged on the workpiece main shaft, a fixed tip is arranged on the tailstock, and the movable tip and the fixed tip are oppositely arranged in a manner that the axes are collinear. The full-automatic numerical control thread grinding machine further comprises a cross-shaped workbench, the cross-shaped workbench is fixedly installed on the rack, an installation platform is arranged on the cross-shaped workbench, the cross-shaped workbench can drive the installation platform to move in the X-axis direction and the Z-axis direction, the X-axis direction and the Z-axis direction are located on the horizontal plane and are perpendicular to each other, the X-axis direction is perpendicular to the axis of the grinding wheel, and the workpiece main shaft and the tailstock are fixedly mounted on the installation platform. The cross-shaped workbench moves in the X-axis direction and the Z-axis direction, when the grinding wheel conducts relief grinding on a screw tap, vibration is small, the higher relief grinding frequency can be achieved, and the advantages of high machining quality and high speed are achieved.

Description

technical field [0001] The invention relates to the field of numerically controlled thread grinding machines, in particular to a fully automatic numerically controlled thread grinding machine. Background technique [0002] The machining of internally threaded holes is generally done after milling out the hole, then using a threaded tap to drill the thread in the hole. To process the tap into a threaded tap, a thread grinder is generally used. [0003] At present, the structural layout of the thread grinder is generally such that the workpiece spindle and tailstock are fixed on the workbench to move the thread pitch, the grinding wheel frame moves back and forth to feed the tool, and the dresser is trimmed on the upper busbar or rear busbar of the grinding wheel, so that the stroke of relief grinding and dressing of the grinding wheel is separated, there is a backhaul error. The traditional dresser can only trim one thread lead angle on the grinding wheel. When the thread l...

AI Technical Summary

Problems solved by technology

The traditional thread mill is driven by a cam mechanism or a screw to move the grinding head back and forth for relief grinding. This structural layout has a large relief grinding load, and the frequency of relief grinding is generally not greater than 10Hz (600 times / min). Mechanical wear, life and accuracy are not easy to guarantee

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