Rotary milling device for long-pitch screw machining

Abstract

The invention discloses a rotary milling device for long-pitch screw machining. The rotary milling device comprises a fixed support, a movable support, a main transmission mechanism and a rotating transmission mechanism. The movable support is hinged to the fixed support through a hinged shaft. An arc-shaped hole concentric with the hinged shaft is formed in the movable support. The movable support and the fixed support are connected together after a bolt penetrates through the movable support through the arc-shaped hole. The main transmission mechanism comprises a shaft base, a transmission shaft, a milling cutter, a motor and a transmission device. The rotating transmission mechanism comprises a gear rotating shaft, an arc-shaped rack, a gear and a hand wheel assembly. The gear rotating shaft is arranged on the fixed support in a rotatable mode and is parallel to the hinged shaft. The arc-shaped rack is fixedly arranged on the movable support. The gear and the arc-shaped rack are meshed and fixedly arranged at one end of the gear rotating shaft. The hand wheel assembly is arranged at the other end of the gear rotating shaft. The rotary milling device is high in machining efficiency and accuracy, 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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