SU1579634A1 - Arrangement for producing passes of rolling mill rolls - Google Patents

Abstract

The invention relates to a machine tool industry and may find application in the manufacture of calibers of mill rolls in metallurgical production. The aim of the invention is to improve the accuracy of calibers and reduce the complexity of their manufacture. On the workpiece roll 1 put on a hollow glass 5, the axis of the outer and inner surfaces of which are made with eccentricity. The holder 7 fixed on the base interacts with the outer surface of the hollow cup 5. A sleeve is connected to the latter, which is fixed on the workpiece and in the clamping element. The processing of the gauge is performed by displacing the workpiece relative to the toolholder while rotating the workpiece. 12 il.

Description

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The invention relates to a machine tool industry and may find application in the manufacture of calibers of mill rolls in metallurgical production.

The purpose of the invention is to improve the accuracy of calibers and reduce the complexity of their manufacture.

FIG. 1 to 3 show the steps of the process of cutting a periodic gauge of the mill roll; in fig. 4 — front view; in fig. 5 is a view A of FIG. four; in fig. 6 is a section BB in FIG. four; in fig. 7 - part of the copying unit of the device; in fig. 8 is a section bb of FIG. 7; in fig. 9 - section G-Y in FIG. 7; in fig. 10 is a section d-d in FIG. 7; in fig. 11 is a diagram for determining device settings; in fig. 12 - schema element.

In the process of cutting periodic calibrations of rolls 1, cutting a groove of a caliber 2 of variable depth changes the position of the axis 3 of rotation of the workpiece for the work roll relative to the cutting tool 4 installed in the tool holder along a path corresponding to the configuration of the groove of the mill roll that changes the distance from the axis roll to the cutting tool. Reduction of the distance from the axis 3 of the roll billet to the cutting edge of the tool 4 with a roll radius K (Fig. 1 and 3) equal to a (Fig. 1), az (Fig. 2), az (Fig. 3), where it increases the depth The cut of the gauge, which is determined by the difference between the radius R of the mill roll and the distance from the roll axis to the cutting edge of the tool, i.e. R-a, (Fig. 1), R-a2 (Fig. 2) R-a (Fig. 3), and the condition () () (# - ae) is fulfilled.

The trajectory of movement of the axis of rotation of the machined roll and, accordingly, the depth of incision of the periodic gauge are determined by the hollow cup 5 of the device (Fig. 4 and 5) mounted on the necks 6 of the billet roll 1. The width change of the gauge is determined by the longitudinal feed of the cutting tool holder 4 along the axis roll. The gauge configuration is determined by the shape of the cutting tool.

The hollow cup 5 of the device (FIG. 6) is mounted on the neck 6 of the mill roll and secured in the holder 7 mounted on the base covering it over the outer surface.

The device (Fig. 7) consists of a hollow cup 5 and a sleeve 8 connected by a separating element 9. The centers of the outer 10 circles (Fig. 8) and the inner 11 surfaces of the hollow cup are shifted by an amount X, ensuring the implementation of a periodic caliber of a given depth. The glass 5 (Fig. 7) is mounted on the workpiece with the possibility of rotation around the total

with the sleeve 8 of the axis 3. The rotation of the sleeve 5 around the axis 3 is carried out when adjusting the device and determines each subsequent step of the displacement along the path of movement

axis of rotation of the processed roll. In the dividing element, the inside diameter of (FIG. 9) is determined on the basis of the diameter of the mill roll neck, while the outer diameter is determined from structural considerations. The division step is determined based on the maximum possible angle of rotation of the axis of the roll being processed around the center of the outer circumference of the cup 5.

The sleeve 8 (Fig. 7) of the device is fixed in the clamping element and connected

with the mill roll neck with a rod (not shown) through the hole 12 (Fig. 1) and the hole in the mill roll neck, which eliminates the arbitrary displacement of the guide element during the cutting process.

The offset X of the centers of the circles of the outer and inner surfaces of the glass (Fig. 8) is determined analytically, based on the scheme for determining the parameters of the proposed device (Figs 11 and 12).

5 In the triangle AjOE (Fig. 12)

, 2 + А, Е2-2- ОА, - А, Е cos ф,

where OE Kmax is the maximum mill roll radius. , O + OS; 0j (A, C) 2 (AB) 2- (BC) 2; cosa / 2; sina / 2. This implies / A, C AO + OB cosa / 2; 1 (A, C) 2 (OE) 2- (OV) 2 sina / 2. 5 Solve the system of equations, substituting the value (К «ин + Д), and get

K HI

I-X2- (2X (KNTSK + D)

40

a 2arccos

R2H., - X- (R, + flp. 2x (Ј "in + L)

where D is the maximum tolerance

on the surface of the roll.

The cutting of a periodic rolling mill gauge is performed as follows. The sleeves and hollow glasses are mounted symmetrically on the mill roll neck, the sleeves being connected to the workpiece. The configuration of the surface of the glass when it interacts with the holder

provides the offset of the axis of rotation of the workpiece roll to the cutting tool and the implementation of the stream gauge variable depth.

Claims (1)

Invention Formula A device for making calibrations of rolling rolls comprising a base, a clamping member, a tool holder and a copying unit, characterized in that, in order to increase the accuracy of calibers and reduce the labor intensity of their manufacture, the copying unit is designed as a hollow cup intended to be mounted on the neck of the workpiece with the possibility of angular rotation associated with the glass by means of a dividing element fixing 2 sleeve mounted in the clamping element and designed to be fixed on the workpiece and covering the glass on the outer surface of the holder fixed to the base, while the axes of the outer and inner surfaces of the hollow glass are eccentrically aligned with each other. Fig.Z FI.5 Fig.8 FIG. 6 9 f,