CN113944692A - Warm forging and cold extruding hub sleeve - Google Patents

Warm forging and cold extruding hub sleeve Download PDF

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Publication number
CN113944692A
CN113944692A CN202010685215.7A CN202010685215A CN113944692A CN 113944692 A CN113944692 A CN 113944692A CN 202010685215 A CN202010685215 A CN 202010685215A CN 113944692 A CN113944692 A CN 113944692A
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CN
China
Prior art keywords
lace
hub sleeve
mounting hole
center
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010685215.7A
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Chinese (zh)
Inventor
李闯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Yihua Heavy Industry Technology Co ltd
Original Assignee
Anhui Yihua Heavy Industry Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Yihua Heavy Industry Technology Co ltd filed Critical Anhui Yihua Heavy Industry Technology Co ltd
Priority to CN202010685215.7A priority Critical patent/CN113944692A/en
Publication of CN113944692A publication Critical patent/CN113944692A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002—Hybrid process, e.g. forging following casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
    • F16C2204/70—Ferrous alloys, e.g. steel alloys with chromium as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/46—Shaping by deformation without removing material by forging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/48—Shaping by deformation without removing material by extrusion, e.g. of metallic profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/31—Axle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/43—Clutches, e.g. disengaging bearing

Abstract

The invention provides a warm forging and cold extrusion hub sleeve, which 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 center line of the inner ring edge, the end point of one end of the center line of the outer lace and the inner ring edge is 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 center lines of the outer lace and the inner ring edge, and the flange size of the outer lace is larger than that of the inner lace; the hub sleeve is arranged in a lace shape, so that the strength of the drill hole position is kept the same as that of other positions, the hub sleeve is subjected to the effects of secondary warm forging and secondary cold extrusion, the service life of the hub sleeve is prolonged by shot blasting, the hub sleeve can work under the high-load strength effect, and the working stability is kept.

Description

Warm forging and cold extruding hub sleeve
Technical Field
The invention relates to the technical field of mechanical parts, in particular to a warm forging and cold extrusion hub sleeve.
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 invention is a hub sleeve for special heavy-duty mechanical equipment, and aims to improve the service life of the hub sleeve.
Disclosure of Invention
The present invention is directed to a warm forging, cold extrusion hub that overcomes, or at least partially solves, the above-mentioned problems, and solves the problem of conventional hubs that are mechanically weak and have a short life.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a warm forging and cold extrusion hub sleeve, which comprises the production processes of blanking, shot blasting, upsetting, reverse extrusion, spheroidizing annealing, finishing, sawing, turning end surfaces and drilling, wherein the material is 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 overlapped 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 the circle center, the connecting line of the circle center of the mounting hole and the circle center of the hub sleeve is overlapped with the center lines of the outer lace and the inner ring edge, and the flange size of the outer lace is larger than that of the inner lace.
As a further scheme of the invention, the maximum outer diameter of the hub sleeve is 110mm, the diameter of a circle with the center of the mounting hole 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, and the diameter of the mounting hole is 9.2 mm.
As a further scheme of the invention, 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.
The invention provides a warm forging and cold extruding hub sleeve, which has the beneficial effects that: the hub sleeve is arranged in a lace shape, the inner circumference and the outer circumference are both in the lace shape, the combination position of the inner lace and the outer lace is the position of the mounting hole, the metal amount on the periphery of the mounting hole is increased, so that the strength of the drilling hole position is kept the same as that of other positions, the hub sleeve is subjected to the action of secondary warm forging and secondary cold extrusion, the service life of the hub sleeve is prolonged by carrying out shot blasting, a larger stress resisting action is generated after the density of the internal structure of the metal is increased, a larger acting force can be borne, the hub sleeve can work under the action of high-load strength, the working stability is kept, and the hub sleeve can be applied to special mechanical equipment such as gravity machinery and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic axial structural diagram provided in an embodiment of the present invention.
Fig. 2 is a schematic view of a radial structure provided in 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
See FIG. 1And as shown in fig. 2, the hub sleeve subjected to warm forging and cold extrusion provided by the embodiment of the invention comprises the production processes of blanking, shot blasting, upsetting, backward extrusion, spheroidizing annealing, finishing, sawing, turning end faces and drilling, wherein 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 the strongest metal characteristic in the structural state is utilized to the maximum extent.
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 hub sleeve used in the invention is subjected to warm forging and cold extrusion treatment, the process adopts a processing mode of twice warm forging and twice cold extrusion for processing before forming according to the structural characteristics and performance requirements of the hub sleeve, the twice warm forging is respectively forging of raw materials and intensity forging after forming, and the twice cold extrusion is respectively used for extruding an outer flower surface and an inner flower hole; 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 than that of the inner lace.
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.
CN202010685215.7A 2020-07-16 2020-07-16 Warm forging and cold extruding hub sleeve Pending CN113944692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010685215.7A CN113944692A (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
CN202010685215.7A CN113944692A (en) 2020-07-16 2020-07-16 Warm forging and cold extruding hub sleeve

Publications (1)

Publication Number Publication Date
CN113944692A true CN113944692A (en) 2022-01-18

Family

ID=79326658

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010685215.7A Pending CN113944692A (en) 2020-07-16 2020-07-16 Warm forging and cold extruding hub sleeve

Country Status (1)

Country Link
CN (1) CN113944692A (en)

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