CN213288514U

CN213288514U - Core roller for ring rolling machine die

Info

Publication number: CN213288514U
Application number: CN202020979924.1U
Authority: CN
Inventors: 郑永强; 银伟; 赵兴明; 郭盛琦; 徐延续; 刘兰潇; 刘晋
Original assignee: Elite Energy Equipment Co ltd
Current assignee: Elite Energy Equipment Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-05-28
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a ring rolling machine is core roller for mould, be in including core roller and setting mould, a set of sleeve on the core roller, its characterized in that: and a group of key grooves are arranged at the position of the core roller mounting die, a group of keys are respectively arranged in the key grooves, and the stop block is arranged between the two keys. The beneficial effects of the utility model reside in that: the core roller of the die abandons an annular groove structure, can avoid the defect of insufficient strength caused by diameter reduction, does not have the phenomenon of stress concentration, and leads the stress of the core roller to be more reasonable; the strength of the core roller can be greatly improved, the service life is prolonged, the investment of spare parts of the core roller is reduced, the time for replacing the core roller is reduced, the cost is reduced, and the efficiency is improved.

Description

Core roller for ring rolling machine die

Technical Field

The utility model belongs to the technical field of large-scale ring member forges and specifically relates to a roll ring of annular forging stock grinds ring in-process core roller for ring rolling machine mould.

Background

The die core roller is an important die part necessary for rolling the special-shaped ring by the ring rolling machine, the rolling die needs to be installed and fixed on the die core roller firstly, then the rolling die is installed on the ring rolling machine for rolling the ring, and the die core roller is generally made of 42CrMo materials and is forged, thermally treated and machined into the size of a final finished product. In addition to the radial tension of the ring rolling machine and the tangential extrusion force generated by rotation during ring rolling of the ring, the ring is rolled under a high-temperature environment, so that the minimum diameter phi d of the core roller of the die (shown in figure 3) is easy to break when the core roller of the die works for a long time under severe conditions. Once the core roll breaks, the rolling process of the ring rolling machine cannot be stopped immediately, which directly results in the ring being deformed and scrapped. In the prior art, an annular groove (the minimum diameter phi d of a core roller in the attached drawing 3) is designed at a position of a core roller installation mold, the axial displacement of the mold is limited by a stop block, the mold is fixed through a split stop block and a sleeve, and the installation of the core roller and the mold is schematically shown in the attached drawing 3.

According to the production statistics of our company, one die core roll will break every four to six months at the position of the minimum diameter of the die core roll, the weight of the die core roll for an 8-meter ring rolling machine is about 4 tons, the manufacturing period is at least one month, the core roll of a large-scale ring rolling machine is larger and heavier, and the replacement and manufacturing of the die core roll will additionally increase the production cost, which is a disadvantage existing in the prior art.

Disclosure of Invention

The utility model aims at mainly solving the fracture condition and the core roller that the fracture of core roller minimum diameter department appears and directly lead to the ring to warp condemned problem, provide a ring rolling machine is core roller for mould, be in including core roller and setting mould, a set of sleeve on the core roller, its characterized in that: a group of key grooves are formed in the positions of the core roller installation mold, a group of keys are respectively arranged in the key grooves, and the stop blocks are arranged between the two keys.

The technical characteristics of the utility model are also: a set of keyway divide into 3 equipartitions settings, is a long keyway, two short keyways respectively set up positioning key and a set of key I in the long keyway, set up positioning key and key II in the short keyway, positioning key, a set of key I and key II respectively through the screw with core roller fixed connection.

The technical characteristics of the utility model are also: a set of key I in the long keyway sets up 3 at least, and the dog setting is between navigation key and key I.

The technical characteristics of the utility model are also: set up the dog between positioning key and the key II in the short keyway, the height of key II is less than positioning key, the height of key I.

The technical characteristics of the utility model are also: the set of sleeves is provided with at least two axial displacements for fixing the die, and the size and the number of the sleeves are determined according to the die.

The beneficial effects of the utility model reside in that: the core roller of the die abandons an annular groove structure, can avoid the defect of insufficient strength caused by diameter reduction, and enables the stress of the core roller to be more reasonable; the strength of the core roller can be greatly improved, the service life is prolonged, the investment of spare parts of the core roller is reduced, and the cost is reduced.

Drawings

Fig. 1 is the utility model discloses the schematic structure drawing, fig. 2 is the utility model discloses with mould connection schematic diagram, fig. 3 is core roller and mould structural schematic diagram before improving, wherein 1 is the core roller, 2 is the navigation key, 3 is the dog, 4 is key I, 5 is the screw, 6 is key II, 7 is the sleeve, 8 is the mould, 9 is the cuff, 1 ' is the core roller, 2 ' is the fixture block, 3 ' is the sleeve, 4 ' is the mould, 5 ' is the key.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As can be seen from the attached drawings, the core roller for the ring rolling machine die comprises a core roller 1, a die 8 and a group of sleeves 7, wherein the die 8 and the group of sleeves 7 are arranged on the core roller 1, a group of key grooves are formed in the positions where the die 8 is installed on the core roller 1, a group of keys are respectively arranged in the key grooves, and a stop block 3 is arranged between the two keys.

A set of keyway divide into 3 equipartitions settings, is a long keyway, two short keyways respectively, sets up positioning key 2 and a set of key I4 in the long keyway, sets up positioning key 2 and key II 6 in the short keyway, and positioning key 2, a set of key I4 and key II 6 respectively through screw 5 and core roller 1 fixed connection.

A set of key I4 in the long keyway sets up 3 at least, and dog 3 sets up between navigation key 2 and key I4.

Set up dog 3 between positioning key 2 and the key II 6 in the short keyway, the height of key II 6 is less than positioning key 2 key, the height of key I4.

A set of sleeves 7 is provided for at least two axial displacements for holding the die 8, the size and number of sleeves 7 being determined according to the die 8.

The working principle is as follows:

during installation, the position key 2, the key I4 and the key II 6 are installed in three key grooves of the core roller 1, then the mold 8 and the sleeve 7 are sequentially installed on the core roller 1, the stop block 3 and the position key 2 are installed at corresponding positions, the mold 8 for the sleeve 7 is fixed, and finally the hoop sleeve 9 is installed at the position of the position key 2, so that the position key 2 is fixed and protected.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.

Claims

1. The utility model provides a ring rolling machine is core roller for mould, includes the core roller and sets up mould, a set of sleeve on the core roller, its characterized in that: a group of key grooves are formed in the positions of the core roller installation mold, a group of keys are respectively arranged in the key grooves, and the stop blocks are arranged between the two keys.

2. The core roll for the ring rolling machine die according to claim 1, characterized in that: a set of keyway divide into 3 equipartitions settings, is a long keyway, two short keyways respectively set up positioning key and a set of key I in the long keyway, set up positioning key and key II in the short keyway, positioning key, a set of key I and key II respectively through the screw with core roller fixed connection.

3. The core roll for the ring rolling machine die according to claim 2, characterized in that: a set of key I in the long keyway sets up 3 at least, and the dog setting is between navigation key and key I.

4. The core roll for the ring rolling machine die according to claim 2, characterized in that: set up the dog between positioning key and the key II in the short keyway, the height of key II is less than positioning key, the height of key I.

5. The core roll for the ring rolling machine die according to claim 1, characterized in that: the set of sleeves is provided with at least two axial displacements for fixing the die, and the size and the number of the sleeves are determined according to the die.