CN115667747A - Machining process of disk hub assembly and disk hub assembly - Google Patents
Machining process of disk hub assembly and disk hub assembly Download PDFInfo
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- CN115667747A CN115667747A CN201980025980.1A CN201980025980A CN115667747A CN 115667747 A CN115667747 A CN 115667747A CN 201980025980 A CN201980025980 A CN 201980025980A CN 115667747 A CN115667747 A CN 115667747A
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- hub
- annular groove
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- peripheral surface
- resistant layer
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- 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
- F16D13/60—Clutching elements
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
A processing technology of a disk hub assembly and the disk hub assembly are provided, wherein the outer peripheral surface of a disk hub (2) is provided with an installation part contacted with a flange plate (1), and the processing technology comprises the following steps: preprocessing step (a): machining the raw material of the hub (2); grooving step (B): machining an inner peripheral surface of the hub (2) to form an annular groove (22) on an inner peripheral surface, the annular groove (22) being coaxial with the central hole (21); spline machining step (C): machining an internal spline (25) on an inner peripheral surface of the hub (2); the following steps are carried out in order after the steps: plating an anti-corrosion wear-resistant layer: plating an anti-corrosion wear-resistant layer on the disc hub (2); and (D) removing the anti-corrosion and wear-resistant layer: machining the outer peripheral surface of the hub (2) to remove at least the anti-corrosion and wear-resistant layer of the mounting portion; and an assembly step (E): the flange plate (1) is pressed and embedded to the installation part of which the anti-corrosion wear-resistant layer is removed; the depth of the annular groove (22) is not less than the height of the internal spline (25), and the annular groove (22) is aligned with the mounting portion in the axial direction of the hub (2). The process reduces the difficulty of the process of plating the anti-corrosion wear-resistant layer, and avoids the deformation of the hub from influencing the assembly of the hub and the shaft.
Description
The invention relates to a disk hub, in particular to a machining process of a disk hub assembly and the disk hub assembly.
When a driven disc hub assembly is machined, the driven disc hub and a flange plate which are plated with nickel need to be assembled, and at present, the nickel plating process for the driven disc hub has the following two schemes:
firstly, a local nickel plating process: the method comprises the steps of firstly machining the raw material of the driven hub to form an outer peripheral surface with a proper shape, then mounting a flange plate on the outer peripheral surface of the driven hub to form a driven hub assembly, then machining a spline in a central hole of the driven hub, then only plating nickel on the spline, and finally carrying out phosphating treatment on the driven hub assembly.
Secondly, an integral nickel plating process: firstly machining the raw material of the driven disk hub to form an outer peripheral surface with a proper shape, then machining a spline in a central hole of the driven disk hub, then integrally plating nickel on the driven disk hub, then machining the outer peripheral surface of the driven disk hub to remove the nickel layer, then installing a flange plate on the outer peripheral surface of the driven disk hub to form a driven disk hub assembly, and finally carrying out phosphating treatment on the driven disk hub assembly. A small number of products use this process.
The local nickel plating process requires a high technical level, and only individual manufacturers have the operation capability, so the cost is higher than that of the integral nickel plating process.
In the integral nickel plating process, after the flange plate is installed, the spline of the driven disk hub can be deformed, so that the driven disk hub cannot be assembled with the shaft, and only a few driven disk hubs with larger wall thicknesses can not be subjected to larger deformation in the process so as to meet the requirements of assembly with the shaft.
The technical problem to be solved by those skilled in the art is how to reduce the difficulty of the nickel plating process of the driven disk hub and avoid the deformation of the driven disk hub from affecting the assembly of the driven disk hub and the shaft.
Disclosure of Invention
The invention aims to overcome or at least alleviate the defects in the prior art, and provides a processing technology of a disk hub assembly and the disk hub assembly, which can reduce the difficulty of the technology of plating an anti-corrosion wear-resistant layer on the disk hub and avoid the deformation of the disk hub from influencing the assembly of the disk hub and a shaft.
Provided is a process for machining a hub assembly including a hub and a flange which are assembled together, the hub having an outer peripheral surface provided with a mounting portion which comes into contact with the flange, the process comprising the steps of:
preprocessing procedure: machining a raw material of the hub to form the hub having an outer circumferential surface of a predetermined shape and a center hole;
grooving: machining an inner peripheral surface of the hub to form an annular groove in the inner peripheral surface, the annular groove being coaxial with the central bore;
spline machining procedure: machining an internal spline on the inner peripheral surface of the hub;
the following steps are performed in order after the above steps:
plating an anti-corrosion wear-resistant layer: plating an anti-corrosion wear-resistant layer on the disc hub;
removing the anticorrosive wear-resistant layer: machining the outer peripheral surface of the hub to remove at least the anti-corrosive wear-resistant layer of the mounting portion; and
an assembling procedure: pressing and embedding the flange plate to the installation part from which the anti-corrosion wear-resistant layer is removed;
wherein the annular groove is aligned with the mounting location in an axial direction of the hub.
In at least one embodiment, the grooving step is performed before the spline machining step, or the spline machining step is performed before the grooving step.
In at least one embodiment, the annular groove has a groove bottom wall and two groove side walls, the two groove side walls and the groove bottom wall being in a circular arc transition.
In at least one embodiment, the width of the annular groove is no less than the thickness of the flange plate, and the depth of the annular groove is no less than the height of the internal splines.
In at least one embodiment, the annular groove has a depth of 1mm to 2mm and the hub has a wall thickness of 3mm to 4mm.
In at least one embodiment, the machining process further comprises a phosphating process performed after the assembly process: and carrying out phosphating treatment on the outer surfaces of the flange plate and the hub.
In at least one embodiment, the process further comprises a receiving groove process: and machining a receiving groove recessed in the axial direction in the outer peripheral portion of the flange, the receiving groove being open to the flange.
In at least one embodiment, the corrosion and wear resistant layer is a nickel layer.
There is also provided a hub assembly including a hub and a flange plate assembled together, the flange plate being press-fitted to the hub, the hub having a center hole, an outer peripheral surface of the hub having a mounting portion in contact with the flange plate, an inner peripheral surface of the hub having an internal spline and an annular groove coaxial with the center hole, the annular groove being aligned with the mounting portion in an axial direction of the hub.
In at least one embodiment, the depth of the annular groove is not less than the height of the internal spline, and the hub assembly is machined by the machining process of the hub assembly according to any one of the above technical solutions.
The technical scheme can at least obtain the following beneficial effects:
forming the annular groove according to the above process, so that when the flange plate is assembled to the hub, deformation does not occur on the internal spline but occurs at a position without the internal spline, thereby not affecting the mounting of the hub and the shaft; or if the annular groove is formed after the assembling process, the deformed portion is removed so that the installation of the hub and the shaft is not affected. Moreover, compared with the local anticorrosive and wear-resistant layer plating process, the integral anticorrosive and wear-resistant layer plating process has the advantages of low difficulty and low cost, and can be easily implemented.
The technical scheme can also obtain the following beneficial effects:
the spline machining process is performed after the grooving process, which can prevent burrs from being generated on the inner peripheral surface of the hub when the spline machining process is performed before the grooving process, thereby preventing the deburring process from being performed.
The annular groove covers the flange plate in the axial direction, which makes it possible to avoid deformation of the internal splines of the hub more effectively.
The annular groove has the function of guiding the shaft in the axial direction, the matching of an external spline of the shaft and an internal spline of the disc hub is facilitated, and the arc-shaped transition can effectively avoid stress concentration.
The depth of the annular groove is 1mm to 2mm, and the wall thickness of the disk hub is 3mm to 4mm, so that the strength of the disk hub and the deformation preventing effect of the annular groove are both considered.
The receiving groove can be used for accumulating the deformation amount of the disk hub.
Fig. 1 shows the process steps of the process of manufacturing the hub assembly of the present invention.
Description of reference numerals:
the flange plate 1, the hub plate 2, the central hole 21, the annular groove 22, the flange 23, the accommodating groove 24, the internal spline 25 and the hub plate 3 are assembled;
the method comprises the following steps of A preprocessing procedure, B grooving procedure, C spline machining procedure, D anticorrosion and wear-resistant layer removing procedure and E assembling procedure.
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1, the hub 2 has a center hole 21, and the center hole 21 has an inner peripheral surface of the hub 2. The hub 2 has an outer peripheral surface and a flange 23 projecting from the outer peripheral surface in the radial direction of the hub 2, and the outer peripheral surface of the hub 2 includes a mounting portion with which the flange 1 comes into contact when the flange 1 is assembled with the hub 2.
When the hub assembly 3 is processed, the following steps can be sequentially performed:
preprocessing procedure A: machining a raw material of the hub 2 to form the hub 2 having an outer peripheral surface of a predetermined shape and a center hole 21;
grooving step B: machining the inner peripheral surface of the hub 2 to form an annular groove 22 in the inner peripheral surface, the annular groove 22 being coaxial with the central hole 21 of the hub 2;
spline machining procedure C: machining (e.g., broaching) the internal spline 25 of the hub 2 on the inner peripheral surface of the hub 2;
plating an anti-corrosion wear-resistant layer: the entire portion (including the inner peripheral surface and the outer peripheral surface) of the hub 2 is plated with an anticorrosive wear-resistant layer such as a nickel-plated layer.
And D, removing the anticorrosive wear-resistant layer: machining the hub 2 to remove the anti-corrosive wear resistant layer of the mounting portion;
an assembling procedure E: the flange plate 1 is pressed and embedded to the installation part of the hub 2 from which the anti-corrosion wear-resistant layer is removed;
and (3) a phosphating procedure: the outer surfaces of the flange plate 1 and the hub 2 are phosphated.
Through the above steps, the hub assembly 3 is formed.
The depth of the annular groove 22 is not less than the height of the internal spline 25, i.e., the internal spline 25 that should be at the annular groove 22 is completely removed after the grooving process B and the spline machining process C are completed.
The annular groove 22 is aligned with the mounting location in the axial direction of the hub 2. It will be appreciated that the mounting location and the annular groove 22 each have a width in the axial direction and "aligned" means that the centre of the annular groove 22 in the axial direction coincides with the centre of the mounting location in the axial direction.
In the working procedure of plating the anti-corrosion wear-resistant layer, besides the nickel plating layer, other anti-corrosion wear-resistant materials, such as zinc alloy and the like, can be plated, so that the anti-corrosion wear-resistant layer made of other materials is formed.
The annular groove 22 is formed in the above-described procedure so that when the flange plate 1 is assembled to the hub 2, deformation does not occur at the internal splines 25 but at a position where the internal splines 25 are absent, i.e., the annular groove 22 forms a deformation zone for deformation so as not to interfere with the mounting of the hub 2 to a shaft (e.g., an input shaft of a transmission). Moreover, compared with the local plating process of the anti-corrosion and anti-wear layer, the overall plating process of the anti-corrosion and anti-wear layer has lower difficulty and cost, and can easily implement the overall plating of the anti-corrosion and anti-wear layer.
In other embodiments, the grooving step B and the spline machining step C may be replaced, and the advantageous effects described above may be obtained similarly.
The hub 2 is connected to an input shaft of e.g. a transmission by means of internal splines 25, thus transferring the engine torque from the disc side of the clutch to the transmission side. The anti-corrosion and wear-resistant layer is plated on the inner spline 25 of the hub 2, so that the durability of the surface of the inner spline 25 can be improved, and the wear resistance and the corrosion resistance of the surface of the inner spline 25 can be improved.
The hardness of anticorrosive wearing layer is great, and the cohesion between and the ring flange 1 is less moreover, and in order to avoid anticorrosive wearing layer to bring the adverse effect of ring flange 1 with the equipment of dish hub 2, the anticorrosive wearing layer of installation position need be got rid of.
In the preprocessing process a, the outer peripheral surface between the flange 23 and the end surface of the hub 2 may be processed to extend outward in the axial direction while gradually approaching the axis of the hub 2.
In the anticorrosive wear-resistant layer removing process D, not only the anticorrosive wear-resistant layer at the installation site but also an anticorrosive wear-resistant layer of a wider range can be removed.
In the assembling process E, the flange plate 1 is brought close to the hub 2 and assembled with the hub 2, and the hub 2 is assembled in place while the hub 2 abuts against the flange 23 in the axial direction. The outer diameter of the hub 2 is slightly larger than the inner diameter of the flange plate 1, and the hub 2 is in press fit with the flange plate 1.
In the phosphating step, a phosphate coating is provided on the outer surface of the hub unit 3 (the surface other than the inner circumferential surface of the hub 2).
The depth of the annular groove 22 may be 1mm to 2mm, and the wall thickness of the hub 2 may be 3mm to 4mm, thereby taking into consideration the strength of the hub 2 and the deformation preventing effect of the annular groove 22.
The method may further include a housing groove processing step: on an outer peripheral portion of the hub 2, for example, a flange 23 of the hub 2, a receiving groove 23 recessed in the axial direction is machined, and the receiving groove 23 is opened toward the flange plate 1. When the flange plate 1 is assembled with the hub 2, a part of the material of the hub 2 is extruded, and the receiving groove 23 receives the extruded material to provide a space for accumulation of the deformation amount of the hub 2.
The grooving process B performed before the spline machining process C also has the following advantageous effects: the burring step is avoided by avoiding the generation of burrs on the inner peripheral surface of the hub 2 when the spline machining step C is performed first and then the grooving step B is performed.
The width of the annular groove 22 may be not less than the thickness of the flange plate 1, and the thickness of the flange plate 1 is equal to the width of the above-described mounting portion, so that the annular groove 22 covers the flange plate 1 in the axial direction, which can more effectively prevent the deformation of the internal splines 25 of the hub 2.
The annular groove 22 has a groove base wall and two groove side walls, which are arranged opposite one another in the axial direction of the hub 2, the groove base wall being located axially between the two groove side walls, the two groove side walls and the groove base wall being in the form of a circular arc transition.
In this way, the annular groove 22 has the function of guiding the shaft in the axial direction, which is more favorable for matching the external splines of the input shaft with the internal splines 25 of the hub 2, and the circular arc-shaped transition can effectively avoid stress concentration.
In the present embodiment, both the hub 2 and the flange 1 are made of carbon structural steel.
It should be understood that fig. 1, from left to right, is: the processing method comprises a preprocessing process A, a grooving process B, a spline processing process C, an anti-corrosion wear-resistant layer removing process D and an assembling process E, and the anti-corrosion wear-resistant layer plating process and the phosphating process are omitted.
It is to be understood that the various process steps are labeled herein as a through E, but that process steps a through E do not have to be in the order specifically recited and that the order of the various process steps can be changed without departing from the inventive principles of this disclosure. For example, the grooving step B is performed after the spline machining step C, and the grooving step B is performed after the assembling step E.
It should be understood that the hub 2 in the present disclosure may be, for example, a driven hub of a clutch.
Of course, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various modifications to the above-described embodiments of the present invention without departing from the scope of the present invention under the teaching of the present invention.
Claims (10)
- A machining process of a disk hub assembly, wherein the disk hub assembly comprises a disk hub (2) and a flange plate (1) which are assembled together, the outer peripheral surface of the disk hub (2) is provided with an installation part contacted with the flange plate (1), and the machining process comprises the following steps:preprocessing step (a): machining a raw material of the hub (2) to form the hub (2) having an outer peripheral surface of a predetermined shape and a center hole (21);grooving step (B): machining an inner peripheral surface of the hub (2) to form an annular groove (22) in the inner peripheral surface, the annular groove (22) being coaxial with the center hole (21); andspline machining step (C): machining an internal spline (25) in the inner peripheral face of the hub (2);the following steps are performed in order after the above steps:plating an anti-corrosion wear-resistant layer: plating an anti-corrosion wear-resistant layer on the disc hub (2);and (D) removing the anti-corrosion and wear-resistant layer: machining the outer circumferential surface of the hub (2) to remove at least the anti-corrosion and anti-wear layer of the mounting portion; andan assembling step (E): the flange plate (1) is pressed and embedded to the installation part from which the anti-corrosion wear-resistant layer is removed;wherein the annular groove (22) is aligned with the mounting location in an axial direction of the hub (2).
- A process of manufacturing a disc hub assembly according to claim 1, wherein the grooving step (B) is performed before the spline grooving step (C) or the spline grooving step (C) is performed before the spline grooving step (B).
- Process for manufacturing a hub assembly according to claim 1, wherein the annular groove (22) has a groove bottom wall and two groove side walls, the two groove side walls and the groove bottom wall being in the form of a circular arc transition.
- Process for manufacturing a disc hub assembly according to claim 1, characterized in that the width of the annular groove (22) is not less than the thickness of the flange (1) and the depth of the annular groove (22) is not less than the height of the internal splines (25).
- Process for manufacturing a hub assembly according to claim 1, wherein the annular groove (22) has a depth of 1 to 2mm and the hub (2) has a wall thickness of 3 to 4mm.
- The process of claim 1, further comprising a phosphating step performed after the assembling step (E): and carrying out phosphating treatment on the outer surfaces of the flange plate (1) and the hub (2).
- The process of claim 1, further comprising a receiving groove process step of: a receiving groove (24) recessed in the axial direction is formed in the outer peripheral portion of the hub (2), and the receiving groove (24) is open to the flange plate (1).
- The process of claim 1, wherein the anti-corrosion wear-resistant layer is a nickel layer.
- A hub assembly comprises a hub (2) and a flange (1) which are assembled together, the flange (1) is pressed and embedded in the hub (2), the hub (2) is provided with a central hole (21), the outer peripheral surface of the hub (2) is provided with a mounting position contacted with the flange (1), the inner peripheral surface of the hub (2) is provided with an internal spline (25) and an annular groove (22) coaxial with the central hole (21), and the annular groove (22) is aligned with the mounting position in the axial direction of the hub (2).
- A hub assembly according to claim 9, the annular groove (22) having a depth not less than the height of the internal spline (25), the hub assembly being machined using the hub assembly machining process according to any one of claims 1 to 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/107692 WO2021056234A1 (en) | 2019-09-25 | 2019-09-25 | Machining process for disk hub assembly, and disk hub assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115667747A true CN115667747A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980025980.1A Pending CN115667747A (en) | 2019-09-25 | 2019-09-25 | Machining process of disk hub assembly and disk hub assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115667747A (en) |
| WO (1) | WO2021056234A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248071A (en) * | 2021-12-20 | 2022-03-29 | 上海炽星新材料科技有限公司 | Method for manufacturing automobile clutch disc hub |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09166156A (en) * | 1995-12-14 | 1997-06-24 | Exedy Corp | Spline hub and manufacture thereof |
| KR100521194B1 (en) * | 2003-10-08 | 2005-10-17 | 현대자동차주식회사 | Spline gear of clutch disc hub |
| CN102554572A (en) * | 2011-12-28 | 2012-07-11 | 浙江华信汽车零部件有限公司 | Processing technology for plate hub of driven plate assembly and mould component adopted in the processing technology |
| CN206206432U (en) * | 2016-11-28 | 2017-05-31 | 北京汽车动力总成有限公司 | A kind of clutch and automobile |
| CN207106045U (en) * | 2017-08-29 | 2018-03-16 | 长城汽车股份有限公司 | Flange components, hub assembly and wheel |
| CN208749856U (en) * | 2017-12-26 | 2019-04-16 | 珠海华粤传动科技有限公司 | A kind of clutch driven disc assembly of flexible connection |
-
2019
- 2019-09-25 CN CN201980025980.1A patent/CN115667747A/en active Pending
- 2019-09-25 WO PCT/CN2019/107692 patent/WO2021056234A1/en active Application Filing
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| WO2021056234A1 (en) | 2021-04-01 |
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