Turning method for buttress thread

Abstract

The invention discloses a turning method for a buttress thread in the field of thread machining. A displacement direct-feed cutter feeding turning mode is adopted in the method. Firstly, a cutter is fed with a work surface of a threaded groove as the benchmark and retracted after cutting to a specified depth; then, a cutter supporting plate is moved towards a non-work surface of the threaded groove by a distance 0.5-1 mm smaller than the width of a cutter tip; the cutter is fed again and stops from being fed when a work surface cutting blade of the cutter is close to the former cutter feeding position or the position where the cutter is close to the tooth bottom of the thread; and after turning is finished, the cutter is retracted, and the above steps are repeated until only a cutter allowance is reserved on the width of the threaded groove. According to the cutter feeding turning mode, at most two cutting blades of the cutter make contact with a part, cutting chips are discharged outwards in the oblique direction and do not accumulate in the threaded groove, and therefore the two lateral surfaces of the threaded groove can obtain good roughness. During finished turning, the multiple-time radial cutter feeding mode is adopted as well, the situation that repeated turning causes vibration is avoided, and the precision of thread teeth is improved.

Description

technical field [0001] The invention relates to the technical field of thread processing, in particular to a zigzag thread turning method. Background technique [0002] The zigzag thread is generally used as a transmission thread. The inclination angle of the tooth edge on the working surface is 3°, and the inclination angle of the tooth edge on the non-working surface is 30°. During the turning process, it is difficult to remove chips, and it is easy to cause chips to accumulate, causing burning, beating, gnawing, and stabbing of the knife. Moreover, due to the difficulty of chip removal and poor heat dissipation of the tool, it is easy to cause large thermal deformation of the tool and the workpiece, which reduces the machining accuracy. Large, prone to abnormal noise and vibration during processing. To sum up, the zigzag thread is a thread structure that is difficult to process. The existing processing methods have many defects and cannot obtain good precision and rough...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies such as difficulty in chip removal, precision and roughness that cannot meet the requirements in the existing zigzag thread turning process, the technical problem to be solved by the present invention is to provide a new zigzag thread turning method