A method of machining threaded steel bar transverse rib groove on roll

Abstract

The present invention relates to a method for processing threaded steel transverse rib grooves on rolls, comprising the following steps: S1, before starting milling, leave a space of 30° to 60° before the milling cutter on the rotating cutter bar contacts the rolls; S2 1. During the milling process, the rotating tool bar rotates 240°, so that the milling cutter forms a transverse rib groove in the ring groove of the roll; The position of the transverse rib groove corresponds to the milling position of the milling cutter; S4. Steps S2 and S3 are repeated until the machining of the transverse rib groove in the annular groove is completed. The invention has high processing efficiency, is beneficial to reduce the "tailing" phenomenon of broken knives and transverse rib grooves, and ensures the quality of steel bar processing. By reserving space in advance, it is used to eliminate the tailing caused by the pause each time when the roll is milled , reasonable design, low tool consumption, high processing precision, which is beneficial to reduce processing costs, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of processing high-boron high-speed steel and small-sized threaded steel bar finished rolls, more specifically, it relates to a method for machining threaded steel bar transverse rib grooves on rolls. Background technique [0002] Since the finished rolls of small-sized threaded steel bars are made of high-boron high-speed steel, due to the high hardness of the rolls, the processing is difficult and the efficiency is low. Frequently, the processing progress of the finished rolls cannot keep up with the rhythm of the production rolls: especially the processing of small-sized threaded steel ribs, Due to the high hardness of the roll, the small size of the groove shape, the small processing tool and poor rigidity, it is easy to cause the milling tool to break and the "tailing" phenomenon of the transverse rib groove, and the processing efficiency is low. Especially when milling to form inclined transverse rib g...

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Problems solved by technology

[0002] Since the finished rolls of small-sized threaded steel bars are made of high-boron high-speed steel, due to the high hardness of the rolls, the processing is difficult and the efficiency is low. Frequently, the processing progress of the finished rolls cannot keep up with the rhythm of the production rolls: especially the processing of small-sized threaded steel ribs, Due to the high hardness of the roll, the small size of the groove shape, the small processing tool and poor rigidity, it is easy to cause the milling tool to break and the "tailing" phenomenon of the transverse rib groove, and the processing efficiency is low

Especially when milling to form inclined transverse rib grooves, because the rolls are constantly rotating, the existing program control is to make the milling cutter touch the rolls immediately after idling and enter the milling program. The distance between the two transverse rib grooves is set by the time, which may be different from the speed of the milling cutter during milling, so there may be a slight pause at the moment when the tool speed is changed by the processing program, and because the roll rotates at the milling place The line speed is slow, and the roll is prone to pause at this moment. If the equipment is used for a long time, the wear is serious, and the main shaft of the roll has a jump, it is more likely to cause the transverse rib groove to tail

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