Four-pressure-roller mechanical intra-machine puller

Abstract

The invention discloses a four-pressure-roller mechanical intra-machine puller. A main body is of a stepped structure composed of a large cylinder and a small cylinder, a sliding groove penetrating ina radial direction is formed in the middle of the upper end face of the large cylinder, a reverse-flighted screw is installed in the sliding groove, a fixed sleeve is installed at a middle flange ofthe reverse-flighted screw, both ends of the reverse-flighted screw are inserted at threaded holes of two sliding bodies, the sliding bodies are installed opposite to each other, the upper end faces of the two sliding bodies are respectively equipped with two pressure rollers for pressing a to-be-pulled workpiece, the pressure rollers protrude out of an opening of the upper surface of the slidinggroove, each sliding body comprises a fixing block and a sliding block, the sliding blocks are slidably connected with the fixing blocks through long screws, compression springs sleeve rod portions ofthe long screws, one ends of the compression springs abuts against the sliding blocks, and the other ends of the compression springs abut against the fixing blocks. According to the puller, rough andfine adjustment of clamping force can be carried out, the degree of abrasion of a clamping jaw of the puller is reduced, replacement of the pressure rollers is extremely convenient and economical, and the overall service life of the puller is prolonged.

Description

technical field [0001] The invention belongs to the field of metal cutting processing, and in particular relates to an automatic material pulling mechanism for CNC lathe processing, which is convenient for continuous turning processing of small and medium-sized composite materials without human intervention. Background technique [0002] At present, when CNC lathes are processing small and medium batches of small and medium-sized parts, if there is no automatic pulling mechanism and the program running time is short, the operator will be bound to a single machine position, loading and unloading workpieces continuously, and it is impossible to carry out one-person double-machine operation , and the action of the worker is single, and the labor intensity is high. The automatic puller can realize the long-term automatic and unmanned continuous operation of the CNC lathe. The existing mechanical puller in the machine has a small number of claws, which are point contacts, easy t...

AI Technical Summary

Problems solved by technology

The existing mechanical puller in the machine has a small number of claws, which belong to point contact, easy to loosen, and the adjustment range is limited. During the pulling process, the axial force is hard to pull out and inserted, which is easy to be damaged and the overall life is short.

A longer chuck must be left, otherwise the puller cannot be used

However, the automatic feeding device outside the machine and industrial robots require a large investment, high cost, long cycle, and large floor space. It is not economical to process small and medium batches of workpieces.

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