CN204267123U - For the modular construction of camshaft - Google Patents
For the modular construction of camshaft Download PDFInfo
- Publication number
- CN204267123U CN204267123U CN201420687535.6U CN201420687535U CN204267123U CN 204267123 U CN204267123 U CN 204267123U CN 201420687535 U CN201420687535 U CN 201420687535U CN 204267123 U CN204267123 U CN 204267123U
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- end member
- hollow shaft
- thickness section
- little
- internal diameter
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Abstract
The utility model provides a kind of modular construction for camshaft, it comprises the hollow shaft being provided with little internal diameter (l) and large diameter (L), the little internal diameter (l) of hollow shaft has tube passage, oil is flowed by tube passage, and the large diameter (L) of hollow shaft is formed in two ends extended of hollow shaft and has the little thickness section (T) of tube body; Be provided with little internal diameter (l') and the end member from its large diameter (L') extended, the little internal diameter (l') of end member equals the little internal diameter (l) of hollow shaft, and the large diameter (L') of end member has the little thickness section (T') of tube body; And attachment arrangement, it is configured to after surface contact is carried out with the little thickness section (T) at the two ends being formed in hollow shaft in one end of the little thickness section (T') of end member, is integrally attached hollow shaft and end member.
Description
Technical field
The utility model relates to camshaft, more particularly, keep flow through the proper flow of the oil of camshaft and end member by reducing the size of bead, described bead is formed when the structure friction pressure welding of end member of two ends by improving camshaft and being couple to camshaft is attached camshaft and end member.
Background technique
Fig. 1 is the cross-sectional view of cross-section, shows the example of the sintering hollow camshaft for automobile.
As shown, the camshaft for automobile is arranged on opening/closing air inlet/exhaust valve between cylinder block and head, and cylinder block and head is the parts of motor (not shown).
Cam 20 corresponding to valve is arranged in opening/closing valve on axle 10, and front ends element 30 and rear end element 40 are arranged on two ends by soldered joint.
Be configured to the helical gear (sprocket wheel or the belt pulley that drive oil pump, power distributor etc., not shown) install on front ends element 30, front ends element 30 is arranged on an end of end member 30 and 40, and be configured to sensor test pin or the similar device of identification eccentric cam revolution or be arranged on end member 40 for the axle of driving fuel pump, end member 40 is arranged on another end.
Because axle is by Long-Time Service, so axle is generally formed by the cast iron with very large wear resistance.
When axle is formed by cast iron, the solid construction of axle increases its weight.
In order to address these problems, recently, hollow metal tube is used as the base material of axle relatively to reduce weight while the durability of retainer shaft, wear resistance and intensity.
Deburring process, cleaning process and the process installing and manufacture cam on the axle using the base material of axle formed by hollow metal tube will be described below.
First, look back the schematic manufacture process of cam 20, metallic dust source material mixed and formed to manufacture cam, the cam 20 manufactured is assembled in the setting position of the axle 10 with oily introduction hole 11 and oil discharge hole 12 temporarily, surface contact is carried out in front ends element 30 and rear end element 40 and two ends, then utilizes the amount of heat produced by friction pressure welding that end member is integrally attached to axle.
But, front ends element 30 or rear end element 40 being attached in a succession of processing procedure of two ends of axle 10 by friction pressure welding, there is following point.
When by friction pressure welding attached shaft 10 and end member, produce amount of heat from the surface contact portion between axle 10 and end member, the surface contact portion thus between end member 30 and 40 and axle 10 melts due to amount of heat and is attached.
Surface contact portion between end member 30 and 40 and axle 10 melts in a succession of processing procedure, in the solution intake channel body then melted and solidify formed bead 50, as shown in Figure 3.
Thus, when melting due to above-mentioned factor and the bead 50 solidified is introduced in tube body, the part being formed with the bead 50 be introduced into reduces the internal diameter of normal tube passage, and the small channel thus formed by bead can disturb has certain oil pressure and the flowing flowing through the oil of camshaft tube body.
In addition, owing to defining bead in the process being attached end member and axle and the exterior materials that produces is circulated by oily introduction hole 11 and oil discharge hole 12 flow path along oil being welded by friction pressure, and cause cut on the parts needing oil supply.
Model utility content
In order to address these problems, the utility model aims to provide a kind of camshaft and manufactures the method for camshaft, it is by the structure of end member improving camshaft and be couple to two end, reduce the size of the bead formed in the process by friction pressure welding attachment camshaft and end member, thus the proper flow of the oil flowing through camshaft and end member is provided.
In addition, the utility model also aims to provide a kind of camshaft and manufactures the method for camshaft, and it reduces the formation of the bead in the tube passage that oil passes through by improving the structure of axle and end member, allows the smooth flow of oil while keeping convenient pressure.
In order to realize above-mentioned aspect, first mode of execution of the present utility model provides a kind of modular construction for camshaft, it comprises: the hollow shaft being provided with little internal diameter (l) and large diameter (L), the little internal diameter (l) of described hollow shaft has tube passage, oil is flowed by tube passage, and the large diameter (L) of described hollow shaft is formed in two ends extended of hollow shaft and has the little thickness section (T) of tube body; Be provided with little internal diameter (l') and the end member from its large diameter (L') extended, the little internal diameter (l') of described end member equals the little internal diameter (l) of hollow shaft, and the large diameter (L') of described end member has the little thickness section (T') of tube body; And attachment arrangement, it is configured to after surface contact is carried out with the little thickness section (T) at the two ends being formed in hollow shaft in one end of the little thickness section (T') of end member, is integrally attached hollow shaft and end member.
In order to effectively realize the first mode of execution of the present utility model, attachment arrangement can by friction pressure welding attachment.
In order to effectively realize the first mode of execution of the present utility model, the thickness of little thickness section (T and T') can be equal to each other or difference.
In order to effectively realize the first mode of execution of the present utility model, the little thickness section (T or T') of in described end member and described hollow shaft extends to surround the side in the inner side and outer side of another the little thickness section (T' or T) in described end member and described hollow shaft.
In order to effectively realize the first mode of execution of the present utility model, the little thickness section (T') of described end member and the little thickness section (T) of described hollow shaft have step difference, and described step difference has the correspondingly-shaped being fitted to each other and coupling.
In order to effectively realize the first mode of execution of the present utility model, hollow shaft can be formed by identical metal or different metals with end member.
Second mode of execution of the present utility model provides a kind of method manufacturing camshaft, it comprises: the first preparation process preparing hollow shaft, hollow shaft is provided with little internal diameter (l) and large diameter (L), little internal diameter (l) has tube passage, oil is flowed by tube passage, and large diameter (L) is formed in two of the hollow shaft ends extended and has the little thickness section (T) of tube body; Prepare the second preparation process of end member, the large diameter (L') that end member is provided with little internal diameter (l') and extends from it, little internal diameter (l') equals the internal diameter (l) of axle, and large diameter (L') has the little thickness section (T') of tube body; Carry out being welded by friction pressure in the state of surface contact the attach step of attached shaft and end member with the one end of the thickness section (T') at end member and the thickness section (T) at the two ends being formed in axle.
In order to effectively realize the second mode of execution of the present utility model, the thickness of thickness section (T and T') can be equal to each other or difference.
In order to effectively realize the second mode of execution of the present utility model, the thickness section (T and T') of the side in the thickness section (T') of tube body or the thickness section (T) of end member can extend the side in the inner side and outer side of the thickness section (T and T') of surrounding opposite side.
In order to effectively realize the second mode of execution of the present utility model, the thickness section (T') of tube body or the thickness section (T) of end member can have step difference, and this step difference has the corresponding proterties being fitted to each other and coupling.
In order to effectively realize the second mode of execution of the present utility model, axle can be formed by identical metal or different metals with end member.
Accompanying drawing explanation
Fig. 1 is cross-sectional view, shows the internal configuration of the ordinary sinter hollow camshaft that the utility model is suitable for;
Fig. 2 is cross-sectional view, shows the state that the camshaft of correlation technique and end member couple;
Fig. 3 is cross-sectional view, shows the camshaft of correlation technique and the coupling of end member;
Fig. 4 A to 4C is cross-sectional view, shows the state coupled according to camshaft of the present utility model and end member;
Fig. 5 is cross-sectional view, shows the coupling according to camshaft of the present utility model and end member; With
Fig. 6 is flow chart, shows according to the process coupling camshaft and end member of the present utility model.
Embodiment
Hereinafter, illustrative embodiments of the present utility model is described in detail with reference to accompanying drawing.Fig. 4 A to 4C is cross-sectional view, show the state coupled according to camshaft of the present utility model and end member, Fig. 5 is cross-sectional view, show the coupling according to camshaft of the present utility model and end member, Fig. 6 is flow chart, shows according to the process coupling camshaft and end member of the present utility model.
For convenience of description, identical with element with the parts of correlation technique parts are represented by identical reference character with element.
In addition, owing to describing the method according to manufacture camshaft of the present utility model when describing the structure of camshaft, so independent process prescription will be omitted.
As shown, according to the utility model, provide the hollow shaft 10 with little internal diameter l and large diameter L, little internal diameter l has tube passage, and oil is flowed by tube passage, and large diameter L is formed in the ends of two of hollow shaft expansions and has the little thickness section T of tube body.
The front ends element 30 and the rear end element 40 that are couple to two ends of axle 10 have the little internal diameter l' equal with the internal diameter l of axle 10, the little thickness section T' of two ends of tube body comprises the end member 30 and 40 with large diameter L', and passes through both ends of friction pressure welding integral ground attached shaft 10 and end member 30 and 40.
Although axle 10 is preferably identical with the thickness of T' with the thickness section T of 40 with end member 30, even if when the thickness of thickness section T and T' is different from each other, the purpose of this utility model also can realize.
Meanwhile, end member 30 contacts with the thickness section T of two ends being formed in axle 10 with the end of the thickness section T' of 40, then by the attachment of friction pressure welding integral ground.
But, at this, according to feature of the present utility model, be attached by the conventional friction pressure welding as correlation technique described under the state that the axle 10 manufactured respectively and end member 30 and 40 coincide with one another on its surface.
When axle 10 and end member 30 and 40 are attached by said process, the size of the bead 50 formed as shown in Figure 5 can reduce.
Meanwhile, even if when the thickness section T' of one of the thickness section T' of tube body and the thickness section T of end member and T extends with side in the inner side and outer side of the thickness section T and T' that surround opposite side, the purpose of this utility model also can realize.In addition, even if when the thickness section T' of tube body or the thickness section T of end member has the step difference different time corresponded to each other, the purpose of this utility model also can realize.
Certainly, in order to effectively realize the first and second mode of executions of the present utility model, although axle 10 can by identical metal manufacture with 40 with end member 30, they also can by different metal manufactures.
Thus, because the size being formed in the bead 50 of the surface contact portion between axle 10 and end member 30 and 40 reduces, so keep the proper flow of oil by preventing the tube passage of the oil flowing through camshaft and end member from blocking.
If see from foregoing teachings, according to the method manufacturing camshaft, due to by improve camshaft and be couple to two ends end member structure and reduce the size of the bead formed in the attach procedure of camshaft and end member, so the proper flow of the oil of camshaft and end member can be kept flow through.
In addition, because reduced the size of the bead formed in the tube passage passed through at oil by the structure improving axle and end member, so when keeping the convenient pressure of oil, oily smooth flow can be made.
Those skilled in the art should understand, can make various modification to above-mentioned illustrative embodiments of the present utility model and not deviate from spirit or scope of the present utility model.Thus, desirably, if these modification fall into the scope of claims and equivalence thereof, the utility model just covers all these modification.
Claims (8)
1. for a modular construction for camshaft, it is characterized in that, comprising:
Be provided with the hollow shaft of little internal diameter (l) and large diameter (L), the little internal diameter (l) of described hollow shaft has tube passage, oil is flowed by described tube passage, and the large diameter (L) of described hollow shaft is formed in two ends extended of described hollow shaft and has the little thickness section (T) of tube body;
Be provided with little internal diameter (l') and the end member from its large diameter (L') extended, the little internal diameter (l') of described end member equals the described little internal diameter (l) of described hollow shaft, and the large diameter (L') of described end member has the little thickness section (T') of tube body; With
Attachment arrangement, it is configured to after surface contact is carried out with the little thickness section (T) at the two ends being formed in described hollow shaft in one end of the little thickness section (T') of described end member, is integrally attached described hollow shaft and described end member.
2. modular construction according to claim 1, is characterized in that, described attachment arrangement is by friction pressure welding attachment.
3. modular construction according to claim 1, is characterized in that, the thickness of the little thickness section (T) of described hollow shaft and the little thickness section (T') of described end member is equal to each other.
4. modular construction according to claim 1, is characterized in that, the thickness of the little thickness section (T) of described hollow shaft and the little thickness section (T') of described end member is different from each other.
5. modular construction according to claim 1, it is characterized in that, the little thickness section (T or T') of in described end member and described hollow shaft extends to surround the side in the inner side and outer side of another the little thickness section (T' or T) in described end member and described hollow shaft.
6. modular construction according to claim 1, it is characterized in that, the little thickness section (T') of described end member and the little thickness section (T) of described hollow shaft have step difference, and described step difference has the correspondingly-shaped being fitted to each other and coupling.
7. modular construction according to claim 1, is characterized in that, described hollow shaft is formed by identical metal with described end member.
8. modular construction according to claim 1, is characterized in that, described hollow shaft and described end member are formed by different metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420687535.6U CN204267123U (en) | 2014-11-17 | 2014-11-17 | For the modular construction of camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420687535.6U CN204267123U (en) | 2014-11-17 | 2014-11-17 | For the modular construction of camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267123U true CN204267123U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420687535.6U Active CN204267123U (en) | 2014-11-17 | 2014-11-17 | For the modular construction of camshaft |
Country Status (1)
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| CN (1) | CN204267123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717206A (en) * | 2016-08-09 | 2018-02-23 | 马勒国际有限公司 | Method for attachment element to be connected to hollow shaft |
-
2014
- 2014-11-17 CN CN201420687535.6U patent/CN204267123U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717206A (en) * | 2016-08-09 | 2018-02-23 | 马勒国际有限公司 | Method for attachment element to be connected to hollow shaft |
| CN107717206B (en) * | 2016-08-09 | 2021-09-17 | 马勒国际有限公司 | Method for connecting an attachment element to a hollow shaft |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |