Machining method for grinding deep hole by using weak-rigidity grinding rod

Abstract

The invention discloses a machining method for grinding a deep hole by using a weak-rigidity grinding rod. The machining method comprises the following steps of 1, starting a machine tool to install aworkpiece and a grinding wheel; 2, finishing the circumferential surface of the grinding wheel and recording the coordinate value X11 of an X-axis grating of the machine tool when finishing is completed; 3, moving a Z-axis workbench to a safety bit Z1 in Z direction; 4, moving an X-axis workbench to a safety bit X0 in X direction; 5, completing grinding wheel alignment, and recording the coordinates (X2, Z2) of the machine tool by this time; 6, applying a pre-compression amount Xap0; 7, controlling the X-axis workbench to feed by the cutting depth ap, and the Z-axis workbench to move to the coordinates (Z0, delta b2) in the Z direction; 8, controlling the X-axis workbench of the machine tool to feed by the cutting depth ap', and the Z-axis workbench to move to the coordinates (Z0, delta b1) in the Z direction; 9, repeating step 7 and step 8, after the reciprocating grinding is carried out n times, trimming the circumferential surface of the grinding wheel, and recording the coordinatevalue of the X-axis grating of the machine tool as X12; 10, compensating the trimming amount X12-X11 of the grinding wheel to X coordinate, and repeating step 7 and step 8; and 11, repeating step 10until the aperture of the workpiece reaches the size requirement. According to the method, the grinding efficiency is remarkably improved, and the occurrence of safety accidents is avoided.

Description

technical field [0001] The invention belongs to the field of inner circle precision grinding processing, and relates to a processing method for grinding deep holes with a weakly rigid grinding rod. Background technique [0002] Parts with large depth-to-diameter ratio are widely used in rocket engine cylinders, lifting equipment actuators, aircraft landing gear and other fields. Among them, the actuator is a key component of the aircraft landing gear, and its processing quality directly affects the performance of the aircraft landing gear. High-performance aircraft landing gear is an important guarantee for the safe flight of the aircraft. In order to meet the high-performance assembly and The use requirements put forward high-quality and efficient processing requirements for this type of large-depth-to-diameter ratio actuator parts. [0003] At present, in the ordinary inner hole grinding process, the depth diameter of the inner hole of the workpiece is relatively small, t...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low processing efficiency, poor processing stability and easy occurrence of safety accidents mentioned above, the present invention researches and invents a processing method for grinding deep holes with a weakly rigid grinding rod.

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