A rotary milling device for machining large-pitch screw

Abstract

The invention discloses a rotary milling device for processing large-pitch screw rods, which comprises a fixed bracket, a moving bracket, a main transmission mechanism and a rotating transmission mechanism; Concentric arc holes with bolts passing through the movable brackets from the arc holes to connect the movable brackets with the fixed brackets; the main transmission mechanism includes shaft seats, transmission shafts, milling cutters, motors and Transmission device; the rotation transmission mechanism includes a gear shaft, an arc rack, a gear and a hand wheel assembly, wherein the gear shaft is rotatably mounted on the fixed bracket and parallel to the hinge shaft, and the arc The rack is fixedly arranged on the moving bracket, the gear meshes with the arc-shaped rack and is fixedly installed on one end of the gear shaft, and the hand wheel assembly is installed on the other end of the gear shaft. The invention has relatively high processing efficiency and precision, and can greatly save materials.

Description

technical field [0001] The invention belongs to the field of electric screw presses, and more specifically relates to a rotary milling device for processing large-pitch screw rods. Background technique [0002] In the prior art, the processing of the main screw of the electric screw press is generally carried out by modifying the ordinary horizontal car, which can reach the slow motion state (0.4-0.8r / min), and realize the slow cutting through the hanger wheel and the slow motor. [0003] The main screw of the electric screw press is a trapezoidal thread with multiple heads and large pitch. In the traditional process, when cutting at a slow speed, first use a specially ground white steel knife to open the groove, the amount of cutting each time is 0.40mm, the speed is 6r / min, and the rough turning is carried out. The cutting method is as follows: figure 1 .Then use a special grinding tool for 15° cutting, the cutting method is as follows figure 2 , the workpiece is turned...

AI Technical Summary

Problems solved by technology

[0005] In the traditional process, there are the following disadvantages: first, the service life of the machine tool is short, usually a new horizontal car can only be used for 3-4 years; High-precision cutters also require high-level operators; the third is low efficiency: taking the main screw processing of a 1000T electric screw press as an example, under normal circumstances, it takes about 100 hours to complete

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