Adjustable axial positioning device of lathe

Abstract

The invention discloses an adjustable axial positioning device of a lathe, and belongs to the technical field of machines. The adjustable axial positioning device of the lathe comprises a main body disc, a positioning rod, a clamping pin, a spring, a locking screw, a fastening bolt and a positioning cap. According to the adjustable axial positioning device of the lathe, the positioning cap is replaced, so that the positioning requirements of parts of different structures can be met; the fastening bolt is connected with a three-jaw chuck of the lathe, so that the device can be disassembled without disassembling the three-jaw chuck, the operation is convenient, and the labor is saved; and the fastening screw is adjusted through a small stroke, the tightness and the loosening of the positioning rod is realized through the cooperation of the spring force and the conical surface, the adjustment of axial positioning is completed, the structure is exquisite, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a lathe processing auxiliary tool, in particular to an adjustable axial positioning device for a lathe. Background technique [0002] When machining parts on a lathe, axial positioning is often required. In actual production, there are mainly two methods for axial positioning of lathes: one is to directly clamp the part with a three-jaw chuck, and adjust the axial dimension through single-piece measurement. The first method needs to be re-measured and adjusted every time the clamping is performed, which not only has a lot of repetitive workload and low efficiency, but also has measurement errors in each measurement and poor positioning accuracy; the other is to make it separately in advance according to the shape and axial positioning of the processed parts. Although the positioning fixture can meet the positioning requirements, the cost of making the positioning fixture is high a...

AI Technical Summary

Problems solved by technology

[0002] When machining parts on a lathe, axial positioning is often required. In actual production, there are mainly two methods for axial positioning of lathes: one is to directly clamp the part with a three-jaw chuck, and adjust the axial dimension through single-piece measurement. The first method needs to be re-measured and adjusted every time the clamping is performed, which not only has a lot of repetitive workload and low efficiency, but also has measurement errors in each measurement and poor positioning accuracy; the other is to make it separately in advance according to the shape and axial positioning of the processed parts. Although the positioning fixture can meet the positioning requirements, the cost of making the positioning fixture is high and the efficiency is low

[0003] After retrieval, the multi-purpose axial positioning gear plate described in the authorized announcement number CN 209565856 U realizes axial positioning through the stepped shaft and steel balls on the gear plate, but the axial positioning size is not adjustable and lacks versatility; authorized announcement number CN204277596 A kind of CNC lathe spindle positioning structure described in U is fixed by the cooperation of the Morse cone and the spindle taper hole. There is a threaded hole in the middle of the Morse cone, and the screw passes through the threaded hole to connect with the Morse cone. Relative to the protruding length of the Morse cone, the axial positioning dimension of the processed part can be adjusted. Although the patent can realize the adjustable axial positioning, but because the positioning structure is installed inside the main shaft, the chuck needs to be disassembled for each loading and unloading, and the operation is cumbersome. , low efficiency, and its Morse cone is in contact with the spindle hole, repeated disassembly will wear the spindle hole and reduce the accuracy of the machine tool

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