Radial adjusting mechanism of Y-shaped rolling mill

Abstract

The invention discloses a radial adjusting mechanism of a Y-shaped rolling mill and aims to overcome the problems that some of the Y-shaped rolling mills have no radial adjusting devices, the rolling reduction is non-adjustable, or the radial adjustment is achieved under unreasonable transmission structures, the adjustment amount is extremely small and difficultly meets the basic requirement of steady transmission, the service life of the rolling mill is seriously influenced, or the structure is complex, the processing and manufacturing difficulty is high, the cost is high, and the rolling mill is unsuitable for rolling special-shaped products. The radial adjusting mechanism of the Y-shaped rolling mill is characterized in that a main eccentric sleeve and a secondary eccentric sleeve are mounted on each main shaft; a worm mechanism sleeves each main eccentric sleeve; the worm mechanism drives the eccentric sleeves to rotate and accurately adjust the radial position of the roller. The radial adjusting mechanism of the Y-shaped rolling mill has the beneficial effects that on-line adjustment can be implemented; the requirements of the manufacturing accuracy and the assembly accuracy are relatively low; the adjusted radial position accuracy is high; the worms are located on front and back surfaces or the sides of the rolling mill; the servo control motor is conveniently mounted; the radial position can be rapidly and accurately adjusted on line.

Description

technical field [0001] The invention belongs to the technical field of metal rolling, in particular to a radial adjustment mechanism of a Y-shaped rolling mill. Background technique [0002] There are three roll shafts installed on the frame of the Y-type rolling mill, which are perpendicular to the rolling center line and arranged at 120° to each other. High strength, high brittleness and other metal materials that are difficult to be rolled by ordinary rolling mills, and has the characteristics of high geometric precision of the rolled workpiece surface, and is widely used in special steel, titanium alloy, magnesium alloy, tungsten-molybdenum alloy and other special steels. In the production of materials with high rolling difficulty. Some of the Y-shaped rolling mills in the prior art adopt centralized transmission of bevel gear sets, or drive through C-shaped stand gearbox sets. Their common feature is that the rotation of one main shaft driven by one motor is distribute...

AI Technical Summary

Problems solved by technology

This type of rolling mill is a three-roll reducing and sizing rolling mill. It consists of three 120°-distributed rolls forming a triangular pass. The rolled piece is rolled and processed. When the rolled piece is deformed, it bears compressive stress in three directions. The Y-shaped rolling mill It has the function of online rapid radial adjustment, but the problem is that the characteristics of the three main shafts distributed at 120° in the Y-type rolling mill determine that the transmission of one main shaft is distributed to three directions through the gear set mechanism, so that the C-shaped frame structure In addition, the KOCKS rolling mill adopts the installation of eccentric sleeves on each main shaft, and the three eccentric sleeves are meshed with bevel gears. One of the eccentric sleeves is connected with the external bevel gear, and the external bevel gear drives the entire bevel gear set to rotate, so that The three eccentric sleeves rotate synchronously to adjust the pass between the rolls. Another problem with this structure is that the number of transmission gears is large and the precision of manufacturing and installation is high, and the manufacturing cost and maintenance cost are also very high. In addition, This structure makes the three rollers advance and retreat synchronously. Although the position of the rollers and the roll gap can be adjusted concentrically, this structure requires high precision in initial processing and assembly, and also requires very high manufacturing and assembly precision of the entire eccentric set and bevel gear set. , which brings great difficulty to processing and manufacturing and increases the cost of equipment. At the same time, this structure can only complete the rolling of fixed-shaped products, and cannot adapt to the rolling of special-shaped products.

Images