CN218983040U

CN218983040U - Hot rolling combined structure die

Info

Publication number: CN218983040U
Application number: CN202223159070.0U
Authority: CN
Inventors: 张俊; 张博; 瞿洪林
Original assignee: Zhejiang 8+1 Precision Machinery Co Ltd
Current assignee: Zhejiang 8+1 Precision Machinery Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-09
Anticipated expiration: 2032-11-28

Abstract

The utility model relates to the technical field of hot rolling processing of annular parts, in particular to a hot rolling combined structure die which comprises a roller die and a containing hole arranged in the center of the roller die, wherein the roller die is of a split type structure and at least comprises an end face pressing block, a middle pressing block, a first module and a second module, the end face pressing block, the middle pressing block, the first module and the second module are sequentially distributed along the axial direction, the first module and the second module are axially symmetrically arranged, and an annular groove is formed in the outer side after the first module and the second module are spliced. The utility model adopts a split structure, is convenient for maintenance and replacement of the die, reduces the production cost of the die, and has simple and compact structure, convenient operation and simple installation.

Description

Hot rolling combined structure die

Technical Field

The utility model relates to the technical field of hot rolling processing of annular parts, in particular to a hot rolling combined structure die.

Background

Bearings are an important component in contemporary devices. The outer ring or the inner ring of the rolling bearing is generally forged by a bar stock and then is formed by turning. In bearing forging, metal flow lines are one of the important factors affecting the life of bearing steel, and the requirements for bearing flow lines, particularly the raceways, are typically: 1. the streamline of the whole ferrule is uniform and continuous; 2. the included angle between the streamline and the rollaway nest is not more than 30 degrees; 3. the streamlines should be repeatable and reproducible.

The existing bearing hot rolling die is generally an integral die, and has the defect of high die cost.

Disclosure of Invention

The utility model aims to provide a mold with a hot rolling combined structure, which reduces the production cost of the mold through split design.

The above object of the present utility model is achieved by the following technical solutions: the utility model provides a hot rolling integrated configuration mould, includes the roller mould and sets up the accommodation hole at the roller mould center, the roller mould is split type structure, includes terminal surface briquetting, middle briquetting, first module and second module at least, terminal surface briquetting, middle briquetting, first module and second module distribute along the axial in proper order, just first module is the axial symmetry setting with the second module, form annular groove in the outside after first module and the amalgamation of second module.

Preferably, the cross section of the annular groove is trapezoidal, and the width of the annular groove gradually increases from the groove bottom to the groove opening.

Preferably, the end face pressing block and the end face of the second module facing the outer side are respectively provided with an end face hole communicated with the accommodating hole, and the aperture of the end face hole is larger than that of the accommodating hole.

Preferably, the aperture of the end face hole gradually increases from inside to outside.

Preferably, the diameters of the outer circles of the end face pressing block, the middle pressing block, the first module and the second module are equal.

Preferably, a positioning ring is arranged between the first module and the second module, a positioning groove is arranged on the end face, attached to each other, of the first module and the second module, and the positioning ring is embedded in the positioning groove.

Preferably, the positioning ring is arranged concentrically with the first module and the second module.

Preferably, the end face of the first module, which faces one side of the middle pressing block, is provided with a positioning column, the end face pressing block and the middle pressing block are provided with a communicated positioning hole, and the positioning column is arranged in the positioning hole in a penetrating mode.

Preferably, a damping spring is arranged between the end face pressing block and the middle pressing block, the damping spring is sleeved on the positioning column, and the damping spring is respectively propped in the two positioning holes of the end face pressing block and the middle pressing block.

The utility model has the beneficial effects that: the utility model adopts a split structure, is convenient for maintenance and replacement of the die, reduces the production cost of the die, and has simple and compact structure, convenient operation and simple installation.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;

FIG. 2 is a schematic structural view of embodiment 2 of the present utility model;

in the figure: the device comprises a 1-end face pressing block, a 2-middle pressing block, a 3-first module, a 4-second module, a 5-containing hole, a 6-annular groove, a 7-end face hole, an 8-positioning ring, a 9-positioning groove, a 10-positioning column, an 11-positioning hole, a 12-damping spring and a 13-nut.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model, may be made by those skilled in the art after reading the present specification, are only protected by patent laws within the scope of the claims of the present utility model.

Example 1:

as shown in fig. 1, a hot rolling combined structure die comprises a roller die and a containing hole 5 arranged in the center of the roller die, wherein the roller die is of a split structure and comprises an end face pressing block 1, a middle pressing block 2, a first module 3 and a second module 4, the end face pressing block 1, the middle pressing block 2, the first module 3 and the second module 4 are sequentially overlapped along the axial direction, and the outer diameters of the end face pressing block 1, the middle pressing block 2, the first module 3 and the second module 4 are equal.

The first module 3 and the second module 4 are axially symmetrically arranged, and an annular groove 6 is formed on the outer side after the first module 3 and the second module 4 are spliced. The end face pressing block 1, the middle pressing block 2, the first module 3 and the second module 4 are sequentially connected into a whole through bolts.

The cross section of the annular groove 6 is trapezoid, and the width of the annular groove 6 gradually increases from the groove bottom to the groove opening.

The end face briquetting 1 and the end face of the second module 4 facing the outer side are respectively provided with an end face hole 7 communicated with the accommodating hole 5, the aperture of the end face hole 7 is larger than that of the accommodating hole 5, and the aperture of the end face hole 7 is gradually increased from inside to outside.

The roller die adopts a split structure, so that the maintenance and the replacement of the die are convenient, and the production cost of the die is reduced.

Example 2:

the difference from embodiment 1 is that, as shown in fig. 2, a positioning ring 8 is provided between the first module 3 and the second module 4, a positioning groove 9 is provided on the end face of the first module 3 and the second module 4, which are attached to each other, and the positioning ring 8 is embedded in the positioning groove 9. The positioning ring 8 is arranged concentrically with the first module 3 and the second module 4. The first module 3 and the second module 4 are connected into a whole through bolts, and the first module 3 and the second module 4 are radially positioned through the positioning ring 8, so that dislocation movement of the first module 3 and the second module 4 is prevented.

The end face of the first module 3, which faces one side of the middle pressing block 2, is provided with a positioning column 10, the end face pressing block 1 and the middle pressing block 2 are provided with a communicated positioning hole 11, and the positioning column 10 is arranged in the positioning hole 11 in a penetrating mode. The locating column 10 is perpendicular to the end face of the first module 3 and is of an integral structure with the first module 3, a nut is screwed at the end portion of the locating column 10, a counter bore for accommodating the nut is formed in the end face pressing block 1, and the end face pressing block 1, the middle pressing block 2 and the first module 3 are connected into a whole through the locating column 10 and the nut.

A damping spring 12 is arranged between the end face pressing block 1 and the middle pressing block 2, the damping spring 12 is sleeved on the positioning column 10, two ends of the damping spring are extended into two positioning holes 11 of the end face pressing block 1 and the middle pressing block 2, steps are arranged at the ends of the two positioning holes 11, the end of the damping spring 12 is propped against the steps, vibration between the end face pressing block 1 and the middle pressing block 2 is reduced through the damping spring 12, and the damping spring is acted on the nut through elasticity, so that the nut is prevented from loosening.

Claims

1. The utility model provides a hot rolling integrated configuration mould, includes roller mould and sets up accommodation hole (5) at roller mould center, its characterized in that: the roller die is of a split structure and at least comprises an end face pressing block (1), a middle pressing block (2), a first module (3) and a second module (4), wherein the end face pressing block (1), the middle pressing block (2), the first module (3) and the second module (4) are sequentially distributed along the axial direction, the first module (3) and the second module (4) are axially symmetrically arranged, and an annular groove (6) is formed in the outer side after the first module (3) and the second module (4) are spliced.

2. The hot rolling composite structure die as claimed in claim 1, wherein: the cross section of the annular groove (6) is trapezoid, and the width of the annular groove (6) gradually increases from the groove bottom to the groove opening.

3. The hot rolling composite structure die as claimed in claim 1, wherein: the end face pressing block (1) and the second module (4) are provided with end face holes (7) communicated with the accommodating holes (5) on the end faces facing the outer side, and the aperture of the end face holes (7) is larger than that of the accommodating holes (5).

4. A hot rolling composite structure die according to claim 3, wherein: the aperture of the end face hole (7) is gradually increased from inside to outside.

5. The hot rolling composite structure die as claimed in claim 1, wherein: the diameters of the excircles of the end face pressing block (1), the middle pressing block (2), the first module (3) and the second module (4) are equal.

6. The hot rolling composite structure die as claimed in claim 1, wherein: a positioning ring (8) is arranged between the first module (3) and the second module (4), a positioning groove (9) is formed in the end face, attached to each other, of the first module (3) and the second module (4), and the positioning ring (8) is embedded in the positioning groove (9).

7. The hot rolling composite structure die set forth in claim 6, wherein: the positioning ring (8) is arranged concentrically with the first module (3) and the second module (4).

8. The hot rolling composite structure die as claimed in claim 1, wherein: the positioning column (10) is arranged on the end face of the first module (3) facing one side of the middle pressing block (2), the end face pressing block (1) and the middle pressing block (2) are provided with communicated positioning holes (11), and the positioning column (10) is arranged in the positioning holes (11) in a penetrating mode.

9. The hot rolling composite structure die set forth in claim 8, wherein: damping springs (12) are arranged between the end face pressing block (1) and the middle pressing block (2), the damping springs (12) are sleeved on the positioning columns (10), and the damping springs (12) are respectively propped in the two positioning holes (11) of the end face pressing block (1) and the middle pressing block (2).