JPH0119983B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a roll device for an annular metal rolling mill that rolls and shapes an annular metal material to produce annular metal products such as inner and outer rings of bearings.

Prior Art In FIGS. 3 and 4, 41 is a pair of inclined split rolls, 42 is a center roll, which are in pressure contact with the outer circumference, both sides and inner circumference of an annular material 43, and the outer diameter forcing roll 44 are arranged at several predetermined positions on the outer periphery of the annular material 43. The outer diameter forcing roll 44 is pivotally supported by a holder 44a, and the holder 44a is fitted into a groove 45 formed radially inside a fixed frame 46 supporting one end of the shaft of the center roll 42. It is said that it is possible to slide only in the direction. The length of the retainer bolt 47 screwed into the holder 44a is adjusted so that its head abuts against the bottom of the fixed frame 46. 48 is a bolt for fixing the holder 44a, and 46a is a hole for attaching the bolt 44a.

A movable frame 49 supporting the other end of the shaft of the center roll 42 is movable in the direction of the arrow by an operating means (not shown), and is capable of loading and unloading the workpiece of the annular material 43 onto the center roll 42 . The removal is performed when the movable frame 49 moves away in the right direction in the figure.
The fixed frame 46 and the movable frame 49 are installed on an operating table 50, and the table 5
0 can be raised and lowered by means of a lifting means (not shown) (Japanese Patent Application Publication No. 34-7408 and US Pat. No. 3,230,606).

Problems to be Solved by the Invention In the conventional roll device, the annular material 4
The outer diameter forcing roll 44 located behind 3 can move only in the radial direction through which the radial groove 45 passes;
Since it cannot be moved in a direction perpendicular to the radius, it is not possible to always move the outer diameter forcing roll 44 to an appropriate position depending on the type of outer diameter of the annular material 43. There was a flaw that made it impossible to increase the number.

The present invention is designed to eliminate the above-mentioned drawbacks and to optimally arrange the outer circumference of the annular material 43 in the position and number of the outer diameter force rolls 44, which greatly affect the quality of rolled products.

Means for Solving the Problems In the present invention, as shown in FIGS. 1 and 2, a ring pressure roll 1, side pressure rolls 2 and 3, and a center roll 4,
In an annular metal rolling mill comprising a group of outer diameter forced rolls 21 arranged behind the center roll 4,
An arcuate groove 18 is provided inside the fixed frame 15 supporting one end of the shaft of the center roll 4.
a guide piece 19 that is slidably fitted into the guide piece 19 and fixed at an arbitrary position in the arcuate groove 18 with a bolt 20;
will be established.

A groove 19b that intersects the arcuate groove 18 is formed in the guide piece 19, and the outer diameter forced roll 2 is formed in the groove 19b.
A holder 22 that pivotally supports 1 is slidably fitted, and the holder 22 is moved to the guide piece 19 by a bolt 23.

An outer peripheral wall 2 substantially concentric with the arc of the arcuate groove 18
5 and the head of a buckle bolt 24 formed on the fixed frame 15 and screwed into the holder 22 is brought into contact with the outer peripheral wall 25, and the outer diameter forced roll 21 is brought into contact with a predetermined position on the outer periphery of the annular material 11. It is designed to do the following.

Function The plurality of outer diameter forcing rolls 21 are
After the annular material 11 is placed at a position to obtain the rolled finished diameter, the other outer diameter forcing rolls 21 are usually arranged so as to equally divide the outer circumference of the annular material between the outer diameter forcing rolls 21 on both sides.

In order to move the outer diameter forced roll 21 to another position depending on the diameter and thickness conditions of the annular material, move the guide piece 19 along the arcuate groove 18 provided in the fixed frame 15 to the desired position. After moving the holder 22 to the fixed frame 15 and fixing it to the fixed frame 15, the holder 22 is moved along the radial groove 19b provided in the guide piece 19, and the outer diameter forced roll 2 pivotally supported by the holder 22 is moved.
1 fixes the holder 22 to the guide piece 19 at a position where it abuts a predetermined position on the outer periphery of the annular material 11.
The buckle bolt 24 is adjusted to either the front or the rear so that its head abuts against the outer peripheral wall 25.

Depending on the setup conditions, the holder 22 may be
is moved to set the radial position of the outer diameter forced roll 21 with respect to the annular material, and then fixed to the guide piece 19. After that, the guide piece 19 is slid along the arcuate groove 18, and the annular material 11 is moved. After arranging the outer diameter force roll 21 so as to abut it at an appropriate position on the outer periphery of the guide piece 19, the guide piece 19 may be fixed to the fixed frame 15, and the length of the retainer bolt 24 may be adjusted.

Embodiment In FIG. 2, the ring pressure roll 1 and the side pressure rolls 2 and 3 on both sides thereof have a rolling groove shape corresponding to the shape of the outer periphery and both side surfaces of the ring-shaped product after rolling is completed, and the center roll It is constructed so that it can be disassembled along an axis parallel to the axis of 4.

The ring pressure roll 1 and the side pressure roll 3 are rotated by two drive shafts 6 connected by a coupling 5, and the drive shafts 6 are rotated by a drive motor 7.

The side pressure roll 2 is moved in the axial direction by a bearing advancing/retreating device 9 integrally with a driven shaft 8 supporting the side pressure roll 2.

The drive motor 7 and the bearing advancing/retracting device 9
Both are attached to the lower surface of the upper base 10, and the pressure contact work with the annular material 11 of each roll,
Alternatively, the fixed frame 15 and the movable frame 16 are erected on an intermediate table 14 having a pressure means 13 and are configured to be able to rise and fall along the guide post 12 in order to extract the annular product after rolling is completed. . The top and bottom of each guide post 12 are fixed to the upper base 10 and lower base 17, respectively, and the movable frame 16 is moved away in the direction of the arrow by an operating means (not shown) as shown in the imaginary line. It is possible.

The center roll 4 is supported at both ends of its shaft by a fixed frame 15 and a movable frame 16, and is arranged so as to be inserted through a hole in the annular material 11 and pressed against a predetermined position on the inner circumference.

A guide portion 19a protruding from a guide piece 19 is slidably fitted into an arcuate groove 18 formed on the inside of the fixed frame 15 on an arc centered approximately near the center roll 4. The guide piece 19
On the side opposite to the guide portion 19a, a guide groove 19b is formed in a direction crossing the arcuate groove.

The guide piece 19 is fixed to the fixed frame 15 with bolts 20 at appropriate positions in the arcuate groove 18. 18
a is a long hole formed in the arcuate groove 18 and along the groove 18;

In the guide groove 19b formed in the guide piece 19, a holder 22 that pivotally supports the outer diameter forced roll 21 is provided.
are slidably fitted. The holder 22 is inserted into the groove 22 formed in the holder 22 by a guide piece 19.
A bolt 23 is inserted through which the bolt 23 is fixed.

The head of the retainer bolt 24 screwed into the holder 22 is formed concentrically with the arc of the arc-shaped groove 18.
Moreover, it is in contact with the inner side of an outer peripheral wall 25 provided on the fixed frame 15.

Effects of the Invention According to the configuration of the roll device of the present invention, compared to the case of a conventional outer diameter forced roll that can only move in the radial direction, it can also move in the circumferential direction, so it can be used for annular materials of various outer diameters. Therefore, it is possible to always arrange the outer diameter force roll at the optimum position and bring it into contact with the roll, which has the effect of reducing the number of defective rolled products and stabilizing and improving the quality of the rolled products.

Further, since adjustment and setup can be easily performed, it is possible to shorten the working time, and there is an advantage that an outer diameter forcing roll can be added if necessary in relation to the outer diameter, wall thickness, etc. of the annular material.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts showing one embodiment of the present invention;
2 is a longitudinal cross-sectional view of the main part of FIG. 1, FIG. 3 is a cross-sectional view of a conventional example, and FIG. 4 is a longitudinal cross-sectional view of FIG. 3. 1... Circular pressure roll, 2, 3... Side pressure roll, 4
... Center roll, 11 ... Annular material, 15 ... Fixed frame, 16 ... Movable frame, 18 ... Arc-shaped groove, 19 ... Guide piece, 21 ... Outer diameter forced roll, 22 ... Holder, 24 ...Reserve bolt, 2
5...Outer wall.

Claims (1)

[Claims] 1. In an annular metal rolling mill equipped with a ring pressure roll, a side pressure roll, a center roll, and a group of outer diameter force rolls arranged behind the center roll, the holder of the outer diameter force roll is adjusted in position. a guide piece that is adjustable in position is supported in an arcuate groove formed in a fixed frame that supports one end of the shaft of the center roll, and is screwed into the holder; A roll device for an annular metal rolling mill, wherein the head of the bolt is in contact with an outer circumferential wall formed approximately concentrically with the arc of the arc-shaped groove. 2. The roll device for an annular metal rolling mill according to claim 1, wherein the holder of the outer diameter forcing roll is integrally formed with the guide piece.