Internal thread tapping tool

Abstract

The invention discloses an internal thread tapping tool. The tool comprises a core rod, an adjusting nut, a plurality of threaded blades, a pressure ring, a spiral spring and a pressing cover, whereinone end of the core rod is provided with a rotating handle, the other end of the core rod is fixedly provided with the pressing cover, the multiple threaded blades are uniformly distributed around the core rod, each threaded blade is in sliding connection with an axial wedge-shaped dovetail key on the core rod through a dovetail groove in the threaded blade, the adjusting nut is located between the rotating handle and the threaded blades and is matched with the core rod through threads, the pressing ring and the spiral spring are arranged on the core rod in a sleeving mode, one end of the spiral spring abuts against the pressing cover, and the other end of the spiral spring abuts against the threaded blades through the pressing ring. According to the tool, the size of processed threads ischanged by adjusting the distance of the threaded blades slide along the wedge-shaped dovetail key, so that standard threads and non-standard threads of various specifications can be repaired or processed by one tool, the tool purchasing cost is saved, the equipment maintenance cost is reduced, and the equipment maintenance efficiency can be improved.

Description

Technical field [0001] The invention relates to an internal thread tapping tool with adjustable dimensions, which can be used for repairing and processing internal threads of various sizes, and belongs to the technical field of workshop tools. Background technique [0002] Threaded connection has been widely used in mechanical equipment and hydraulic pipelines because of its good self-locking performance, large connection bearing capacity, and reliable connection. However, the threads are often scratched due to irregular operations, collisions and other reasons during use. Once the threads are damaged, they need to be repaired; sometimes during the on-site pipeline construction process, some special-sized pipelines need to be repaired and processed. At present, the repair and processing of internal threads generally require the use of corresponding size taps, and the purchase of multiple specifications of taps will inevitably increase production costs, and some special-size non-s...

AI Technical Summary

Problems solved by technology

However, the threads are often scratched during use due to irregular operations, collisions, etc. Once the threads are damaged, they need to be repaired; sometimes some special-sized pipes need to be repaired and processed during on-site pipeline construction.

At present, taps of corresponding sizes are generally used for the repair and processing of internal threads, and the purchase of taps of various specifications will inevitably increase production costs, and it is still impossible to process some non-standard threads of special sizes, which poses a burden on equipment maintenance. caused great inconvenience

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