CN212479910U - Warm forging and cold extruding hub sleeve - Google Patents
Warm forging and cold extruding hub sleeve Download PDFInfo
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- CN212479910U CN212479910U CN202021401187.3U CN202021401187U CN212479910U CN 212479910 U CN212479910 U CN 212479910U CN 202021401187 U CN202021401187 U CN 202021401187U CN 212479910 U CN212479910 U CN 212479910U
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Abstract
The utility model provides a warm forging, cold extrusion hub sleeve, including outer lace and interior lace, outer lace is located the outer circumference of hub sleeve, interior lace is located the inner circumference of hub sleeve, the hub sleeve is the ring structure, is provided with the mounting hole between outer lace and the interior lace, in order to keep the intensity of mounting hole, the central line coincidence of outer lace and interior lace, the extreme point of outer lace and the interior lace central line one end is the centre of a circle, the line of the mounting hole centre of a circle and the hub sleeve centre of a circle coincides with outer lace and interior lace central line, the flange size of outer lace is greater than the flange size of interior lace; the utility model discloses set the hub sleeve to the shape of lace, guarantee that drilling position keeps the same intensity with other positions, the hub sleeve is through the warm forging of secondary and the cold extrusion of secondary to throw the ball and increase its life-span, can work under the intensity effect of high load, keep the stability of work.
Description
Technical Field
The utility model relates to a machine part technical field especially relates to a warm forging, cold extrusion hub cover.
Background
The hub sleeve is two pieces commonly used in mechanical equipment, particularly wheel type equipment, the hub sleeve is commonly used on a shaft or a clutch, the performance of the hub sleeve determines the performance of the structural part, the conventional hub sleeve machining part at present is to forge a casting and then forge the casting, and finally machine and form the casting, so that the method can meet the general requirements of mechanical equipment, along with the professional requirements of the mechanical equipment, the special degree of the equipment is continuously increased, the increased professional degree needs to support parts under high load for a long time, therefore, the hub sleeve is also an important determining factor in some special equipment, particularly in heavy machinery, the requirements on the hub sleeve are not only the installation accuracy and the general stress requirements, but also need to provide higher stress and strength requirements, and therefore, the structural optimization and the process optimization of the hub sleeve are needed, the utility model discloses a hub sleeve that is used for special type heavy industry mechanical equipment promptly improves its life is the utility model discloses the technical problem that will solve.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a warm forging, cold extrusion hub sleeve that overcomes or at least partially solves the above-mentioned problems to solve the problem of insufficient mechanical strength and short life of the conventional hub sleeve.
In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:
the utility model provides a warm forging, cold extrusion hub sleeve, this hub sleeve's production processes include unloading, throw ball, upset, anti-crowded, spheroidizing annealing, finishing, saw material, car terminal surface, drilling, and the material chooses for use 40CrThe metal comprises an outer lace and an inner lace, the outer lace is located on the outer circumference of the hub sleeve, the inner lace is located on the inner circumference of the hub sleeve, the hub sleeve is of a circular structure, a mounting hole is formed between the outer lace and the inner lace, in order to keep the strength of the mounting hole, the outer lace is superposed with the central line of the inner ring edge, the end point of one end of the central line of the outer lace and the inner ring edge is the circle center, and the connecting line of the circle center of the mounting hole and the circle center of the hub sleeve, the outer lace and the inner lace are connected through the connecting lineThe central lines of the annular edges are overlapped, and the flange size of the outer lace is larger than that of the inner lace.
As a further aspect of the present invention, the maximum outer diameter of the hub sleeve is 110mm, the diameter of the circle where the center of the mounting hole is located is 91mm, the diameter of the outer spline groove is 102mm, the minimum inner diameter of the hub sleeve is 66.3mm, the diameter of the inner spline groove is 81mm, and the diameter of the mounting hole is 9.2 mm.
As a further proposal of the utility model, two the mounting hole centre of a circle is 45 degrees with hub sleeve centre of a circle contained angle, and the contained angle of outer lace flange both sides extension line is 36 degrees, and the contained angle of interior lace recess both sides extension line is 26 degrees.
The utility model provides a warm forging, cold extrusion hub cover, beneficial effect lies in: the utility model discloses set the hub sleeve to the shape of lace, the inside and outside circumference is the lace form, and interior lace is the position of mounting hole with the combination position of outer lace, increase the peripheral metal volume of mounting hole, thereby guarantee that drilling position keeps the same intensity with other positions, the hub sleeve is through secondary warm forging and the cold extrusion of secondary, and throw the ball and increase its life-span, produce great stress resistance effect after the density increase of metal internal organization, and can bear great effort, can work under the intensity effect of high load, the stability of work is kept, it can use in special mechanical equipment such as gravity machinery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an axial structure diagram provided by an embodiment of the present invention.
Fig. 2 is a schematic view of a radial structure provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
Referring to fig. 1 and 2, the embodiment of the present invention provides a warm forging and cold extrusion hub sleeve, the production process of the hub sleeve includes blanking, shot blasting, upsetting, reverse extrusion, spheroidizing annealing, finishing, sawing, turning end face, drilling, and the material is selected from 40CrThe metal comprises an outer lace and an inner lace, wherein the outer lace is positioned on the outer circumference of the hub sleeve, the inner lace is positioned on the inner circumference of the hub sleeve, the hub sleeve is of a circular structure, a mounting hole is arranged between the outer lace and the inner lace, in order to keep the strength of the mounting hole, the outer lace is superposed with the central line of the inner ring edge, the end point of one end of the central line of the outer lace and one end of the central line of the inner ring edge are taken as the circle center, the connecting line of the circle center of the mounting hole and the circle center of the hub sleeve is superposed with the central lines of the outer lace and the inner ring edge, the superposed position of three lines is ensured, and.
As shown in fig. 1, the maximum outer diameter of the hub sleeve is 110mm, the diameter of the circle where the circle center of the mounting hole is located is 91mm, the diameter of the outer lace groove is 102mm, the minimum inner diameter of the hub sleeve is 66.3mm, the diameter of the inner lace groove is 81mm, the diameter of the mounting hole is 9.2mm, the included angle between the circle centers of the two mounting holes and the circle center of the hub sleeve is 45 degrees, the included angle between the extension lines of the two sides of the outer lace flange is 36 degrees, and the included angle between the extension lines of the two sides of the inner lace groove is 26 degrees, that is, the flange size of the outer lace is larger than that of the inner lace, the hub sleeve is integrally in a circular structure, and the two sides of the hub sleeve are machined, including all outer surfaces, so that the hub sleeve meets the working requirements.
The utility model discloses a hub cover that uses is through warm forging and cold extrusion processing, and this technology adopts twice warm forging and twice cold extrusion's processing mode to the processing before the shaping according to the structural feature of hub cover and the demand of performance, and twice warm forging is the forging of raw and other materials and the intensity forging after the shaping respectively, and twice cold extrusion extrudees outer flower face and interior flower hole respectively, and specific course of working is as follows; performing machine type shot blasting on the surface of the blank to ensure that the surface of the blank has certain oxidation resistance; the surface strength of the blank is increased, the surface oxide scale is further removed, and further oxidation is avoided; adopting a press machine to reduce the height of the blanked bar material under the action of set pressure and increase the diameter of the blank material, so that the blank material can be forged; heating the blank in a forging furnace to 600-650 ℃, taking out the blank and forging the blank on a forging machine, controlling the forging pressure to be 10MPa and the forging frequency to be 10 times, obtaining a formed primary forging under the condition, and cooling the formed primary forging at room temperature; controlling the temperature of the blank to be 60-80 ℃ during backward extrusion, and placing the blank in an outer die for cold extrusion to enable the periphery of the blank to form a spline structure; an inner die is installed on the basis of the outer die, a central hole is formed in the center of the primary forging under the action of the inner die, and the inner circle of the central hole is also of a spline structure; placing the primary forging piece in an annealing furnace, heating to 950 ℃, and carrying out annealing operation, wherein the annealing process is used for preparing for later machining, so that the machining performance of the primary forging piece is improved; performing secondary shot blasting on the surface of the initially formed workpiece after annealing is completed, so as to increase the strength of the surface; preventing the machined part after the secondary shot blasting from being in an outer die and an inner die again, forging with the dies under the action of a forging machine, setting the forging pressure to be 1MPa, and forging for 20-30 times, wherein the initially formed machined part is subjected to small size change, the height is reduced by 2-4mm, and the width is increased by 1-3 mm; and cutting the redundant width part by sawing, then installing the machined part in machining equipment for machining, drilling holes in the radial array of the machined part, and performing finish machining on the inner surface and the outer surface of the machined part.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (3)
1. The warm forging and cold extrusion hub sleeve is characterized by comprising an outer lace and an inner lace, wherein the outer lace is positioned on the outer circumference of the hub sleeve, the inner lace is positioned on the inner circumference of the hub sleeve, the hub sleeve is of a circular ring structure, a mounting hole is formed between the outer lace and the inner lace, in order to keep the strength of the mounting hole, the outer lace is superposed with the center line of the inner ring edge, the end point of one end of the center line of the outer lace and one end of the center line of the inner ring edge is a circle center, the connecting line of the circle center of the mounting hole and the circle center of the hub sleeve is superposed with the center lines of the outer lace and the inner ring edge, and the flange size of the outer lace is larger.
2. The warm forging, cold extruding hub sleeve according to claim 1, wherein the maximum outer diameter of the hub sleeve is 110mm, the diameter of the circle where the center of the mounting hole is located is 91mm, the diameter of the outer spline groove is 102mm, the minimum inner diameter of the hub sleeve is 66.3mm, the diameter of the inner spline groove is 81mm, and the diameter of the mounting hole is 9.2 mm.
3. The warm forging and cold extruding hub sleeve according to claim 2, wherein an included angle between the centers of the two mounting holes and the center of the hub sleeve is 45 degrees, an included angle between extension lines of two sides of the outer flange is 36 degrees, and an included angle between extension lines of two sides of the inner groove is 26 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401187.3U CN212479910U (en) | 2020-07-16 | 2020-07-16 | Warm forging and cold extruding hub sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021401187.3U CN212479910U (en) | 2020-07-16 | 2020-07-16 | Warm forging and cold extruding hub sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479910U true CN212479910U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021401187.3U Active CN212479910U (en) | 2020-07-16 | 2020-07-16 | Warm forging and cold extruding hub sleeve |
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| Country | Link |
|---|---|
| CN (1) | CN212479910U (en) |
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2020
- 2020-07-16 CN CN202021401187.3U patent/CN212479910U/en active Active
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