Turning fixture for machining rectangular thread

Abstract

The invention discloses a turning fixture for machining a rectangular thread. The turning fixture comprises a tool bar and a first fixture; the tool bar comprises a main tool bar body; a first side end surface is obliquely formed at the front end of the main tool bar body; a second side end surface perpendicular to an oblique back surface of the first side end surface is formed in the oblique backsurface; the first fixture comprises a main first fixture body; the back end of the main first fixture body fits the open end surface of the first side end surface of the main tool bar body; the lower end of the main first fixture body fits the first side end surface through a supporting part; and the front end of the first fixture extends to form a first pressing part. The turning fixture has the beneficial effects as follows: a tool can perform machining in the spiral direction of the thread, the interference of a blade with a thread groove is avoided, a standard grooving tool blade can beused, and no customized non-standard blades are required, so that the machining cost is effectively reduced; the tool bar is easy to manufacture and can be used for a long time after being manufactured once; and the turning precision is high, the service life of the blade is long, and the turning fixture is convenient to use.

Description

technical field [0001] The invention relates to the field of turning tool fixtures, in particular to a turning fixture for machining rectangular threads. Background technique [0002] Thread turning can be used to process internal and external threads of various shapes, sizes and precision, especially larger threads, but the processing quality of thread turning depends on the technical level of workers and the accuracy of machine tools and tools. The processing of hardened precision lead screw can obtain higher precision and smaller surface roughness value by using precision lathe turning. The thread processing of rotary tools usually requires turning processing, especially the use of rotary tools with rectangular large-lead multi-start threads. In the processing of general fixtures, the bottom of the blade interferes with the thread groove, and it is necessary to grind the bottom of the blade to remove the interference part, which reduces the strength of the blade, easily b...

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