CN104074861B - Rocker arm body and manufacture method thereof - Google Patents
Rocker arm body and manufacture method thereof Download PDFInfo
- Publication number
- CN104074861B CN104074861B CN201310097843.3A CN201310097843A CN104074861B CN 104074861 B CN104074861 B CN 104074861B CN 201310097843 A CN201310097843 A CN 201310097843A CN 104074861 B CN104074861 B CN 104074861B
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- China
- Prior art keywords
- axle sleeve
- main shaft
- spindle hole
- rocker arm
- arm body
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Abstract
The invention discloses a kind of rocker arm body, including main shaft, axle sleeve, the first end of described main shaft has chamfering, described axle sleeve one end to be provided with spindle hole, and described spindle hole is without chamfering；First end interference fit of described main shaft is pressed in described spindle hole, and the axle sleeve upper surface flush of the chamfering bottom of described main shaft the first end and described spindle hole periphery；The chamfering bottom of the first end of described main shaft welds together with described axle sleeve upper surface.The invention also discloses the manufacture method of this kind of rocker arm body.The rocker arm body of the present invention, it is simple to welding, can improve weld strength, improve solder joint shape, it is ensured that the mechanical performance of rocker arm body and improve production efficiency.
Description
Technical field
The present invention relates to mechanical technique, particularly to a kind of rocker arm body and manufacture method thereof.
Background technology
Common rocker arm body, as it is shown in figure 1, include main shaft 11, axle sleeve 12, from axle 13, main shaft 11 and axle sleeve
12 use interference fit to be pressed in the spindle hole of axle sleeve 12 one end, use interference fit to be pressed into from axle 13 with axle sleeve 12
At axle sleeve 12 other end from axis hole, owing to the interference frictional force between axle coaxial sleeve is less, rocker arm body rotate
Time moment of torsion less, be easily caused main shaft 11 dally, skidding, typically require between main shaft 11 coaxial sleeve 12 and weld
Meet the functional requirement of rocker arm body.Common welding method has a following two:
Method one is to use arc welding, uses electric arc welding to there is problems in that 1, need to use electrode, has electrode fouling
Or impaired misgivings；2, belonging to contact type welding processing procedure, consume and the deformation of rocker arm body are bigger；3, exclusive clamps is needed
Tool, inconvenience of remodeling during batch production；4, rocker arm body such as fruit volume is the least, and working place is limited, it is contemplated that indifferent gas
Body protection device, will be unable to weld；
Method two is to use laser welding, and laser welding is to utilize high-octane laser pulse to carry out material in tiny area
Local heating, the energy of laser emission passes through the conduction of heat diffusion inside to material, will be formed specific molten after melt material
Pond.Laser welding, mainly for thin-walled material, the welding of precision component, can realize spot welding, butt welding, stitch welding, sealing
Weldering etc., depth-to-width ratio is high, and weld width is little, and heat affected area is little, it is little to deform, and speed of welding is fast, smooth welded seam, attractive in appearance,
Postwelding is without processing or only need simple process, and weldquality is high, and pore-free is accurately controlled, and focal spot is little, location
Precision is high, easily realizes automatization.
In view of the above advantage of laser welding, laser welding can be used to replace arc welding process.But the actual system at rocker arm body
During making, installing it is contemplated that be easy to structure, chamfer design generally made by axle and axle sleeve, as in figure 2 it is shown, owing to depositing
In chamfering, solder is very few, can reduce weld strength, and solder is too much, can produce solder joint protuberance, or splatter during welding,
Affect product assembly function.
Summary of the invention
The technical problem to be solved in the present invention is that rocker arm body is easy to welding, can improve weld strength, improve solder joint shape,
Ensure the mechanical performance of rocker arm body and improve production efficiency.
For solving above-mentioned technical problem, the rocker arm body that the present invention provides, including main shaft, axle sleeve, the first of described main shaft
End has chamfering, described axle sleeve one end to be provided with spindle hole；
Described spindle hole is without chamfering；
First end interference fit of described main shaft is pressed in described spindle hole, and the chamfering bottom of described main shaft the first end with
The axle sleeve upper surface flush of described spindle hole periphery；
The chamfering bottom of the first end of described main shaft welds together with described axle sleeve upper surface.
It is also preferred that the left rocker arm body also includes from axle；
Described axle sleeve, the other end is provided with from axis hole, parallel with the axis of spindle hole from axis hole；
Described be fixed on from axle one end described from axis hole.
It is also preferred that the left the axle sleeve upper surface of described spindle hole periphery has two kinds of height, near the described week of the spindle hole from axis hole side
The axle sleeve upper surface on limit is higher than the axle sleeve upper surface away from the described spindle hole periphery from axis hole side；
Flush with the chamfering bottom of described main shaft the first end away from the axle sleeve upper surface of the described spindle hole periphery from axis hole side；
Weld together with the chamfering bottom of described main shaft the first end away from the axle sleeve of the described spindle hole periphery from axis hole side.
It is also preferred that the left the difference of two kinds of height of the axle sleeve upper surface of spindle hole periphery falling more than or equal to described main shaft the first end
Angle height.
For solving above-mentioned technical problem, the manufacture method of the above-mentioned rocker arm body that the present invention provides, comprise the following steps:
One. described main shaft the first end interference fit is pressed in the spindle hole of described axle sleeve, away from the described main shaft from axis hole side
The axle sleeve upper surface of hole periphery flushes with the chamfering bottom of described main shaft the first end；
Two. along away from the described spindle hole periphery from axis hole side, use method of laser welding, will be far from described from axis hole side
The axle sleeve upper surface of spindle hole periphery welds together with the chamfering bottom of described main shaft the first end.
It is also preferred that the left in step 2, during laser welding, beam direction is along the axle away from the described spindle hole periphery from axis hole side
Set upper surface welds with the centrage of the chamfering angulation of main shaft the first end.
It is also preferred that the left during laser welding, use negative out of focus mode to weld.
The rocker arm body of the present invention, the spindle hole on axle sleeve is without chamfering, the chamfering bottom of main shaft the first end and spindle hole periphery
Axle sleeve upper surface flush, it is ensured that by laser welding process processing the present invention rocker arm body time solder joint shape and weldering
Connect intensity, it is to avoid body function is impacted by solder joint shape, can guarantee that the mechanical performance of product, improve the reliable of welding
Property and the manufacturability of product, improve production efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly that technical scheme, below the accompanying drawing used required for the present invention is made simple Jie
Continue, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, for ordinary skill
From the point of view of personnel, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is common rocker arm body schematic diagram；
Fig. 2 is the schematic diagram that chamfer design made by axle and the axle sleeve of common rocker arm body；
Fig. 3 is the schematic diagram of the rocker arm body of the present invention；
Fig. 4 is axle and the axle sleeve laser welding schematic diagram of the rocker arm body of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical scheme in the present invention is carried out clear, complete description, it is clear that described
Embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ability
All other embodiments that territory those of ordinary skill is obtained on the premise of not making creative work, broadly fall into this
The scope of bright protection.
Embodiment one
Rocker arm body, as it is shown on figure 3, include main shaft 11, axle sleeve 12；
First end of described main shaft 11 has chamfering；
Described axle sleeve 12, one end is provided with spindle hole, and spindle hole is without chamfering；
First end interference fit of described main shaft 11 is pressed in described spindle hole, and the chamfering of described main shaft 11 first end
Bottom and axle sleeve 12 upper surface flush of described spindle hole periphery；
The chamfering bottom of the first end of described main shaft 11 welds together with described axle sleeve 12 upper surface.
Embodiment two
Based on embodiment one, rocker arm body also includes from axle 13；
Described axle sleeve 12, the other end is provided with from axis hole, parallel with the axis of spindle hole from axis hole；
Described be fixed on from axle 13 one end described from axis hole；
Described from axle 13, it is used for ball bearing is installed.
Embodiment three
Based on embodiment two, axle sleeve 12 upper surface of described spindle hole periphery has two kinds of height, near described from axis hole side
The axle sleeve upper surface of spindle hole periphery higher than away from the axle sleeve upper surface of the described spindle hole periphery from axis hole side；
Flush with the chamfering bottom of described main shaft the first end away from the axle sleeve upper surface of the described spindle hole periphery from axis hole side；
The chamfering bottom of the first end of described main shaft is welded on one with the axle sleeve away from the described spindle hole periphery from axis hole side
Rise.
It is also preferred that the left the difference of two kinds of height of the axle sleeve upper surface of spindle hole periphery falling more than or equal to described main shaft the first end
The height at angle.
Embodiment four
The manufacture method of the rocker arm body of embodiment three, comprises the following steps:
One. described main shaft the first end interference fit is pressed in the spindle hole of described axle sleeve, away from the described main shaft from axis hole side
The axle sleeve upper surface of hole periphery flushes with the chamfering bottom of described main shaft the first end；
Two. along away from the described spindle hole periphery from axis hole side, use method of laser welding, will be far from described from axis hole side
The axle sleeve upper surface of spindle hole periphery welds together, as shown in Figure 4 with the chamfering bottom of described main shaft the first end.
The manufacture method of the rocker arm body of embodiment four, less at the half bush wall thickness of welding camber line end, the chamfering of main shaft is exposed
Welding ends axle sleeve top surface plane, it is ensured that during welding, two ends mother metal is connected firmly by molten metal solder, it is to avoid highly concentrated
Degree gas makes liquid metal move to melt tank edge so that is centrally formed depression in molten bath and reduces solder, causes intensity to drop
Low.
Embodiment five
Based on embodiment four, in step 2, during laser welding, beam direction is along away from the described spindle hole from axis hole side week
The centrage of the chamfering angulation of the axle sleeve upper surface on limit and main shaft the first end (with away from the described spindle hole from axis hole side
The axle sleeve upper surface angulation of periphery 45 °～75 °) weld.
It is also preferred that the left during laser welding, use negative out of focus mode to weld, such as focal plane position is less than welding plane about
0.2～0.5mm (requiring to adjust according to scantling and weld strength).Use negative out of focus mode to weld, solder joint can be avoided
Marginal swell, impacts body function above main shaft end face.
Out of focus mode has two kinds: positive out of focus and negative out of focus.Focal plane is positioned at workpiece and is arranged above positive out of focus, otherwise for bearing out of focus.
By theory of geometric optics, when positive and negative focal plane with welding plane when equal, power density approximation in corresponding plane
Identical, but the melting pool shape actually obtained is different.Negative out of focus mode is welded, and can obtain bigger fusion penetration.
The rocker arm body of the present invention, the spindle hole on axle sleeve is without chamfering, the chamfering bottom of main shaft the first end and spindle hole periphery
Axle sleeve upper surface flush, it is ensured that by laser welding process processing the present invention rocker arm body time solder joint shape and weldering
Connect intensity, it is to avoid body function is impacted by solder joint shape, can guarantee that the mechanical performance of product, improve the reliable of welding
Property and the manufacturability of product, improve production efficiency.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention
Within principle, any modification, equivalent substitution and improvement etc. done, within should be included in the scope of protection of the invention.
Claims (5)
1. a rocker arm body, including main shaft, axle sleeve, the first end of described main shaft has chamfering, described axle sleeve one end to set
It is equipped with spindle hole, it is characterised in that
Described spindle hole is without chamfering；
First end interference fit of described main shaft is pressed in described spindle hole, and the chamfering bottom of described main shaft the first end with
The axle sleeve upper surface flush of described spindle hole periphery；
The chamfering bottom of the first end of described main shaft welds together with described axle sleeve upper surface；
Rocker arm body also includes from axle；
Described axle sleeve, the other end is provided with from axis hole, parallel with the axis of spindle hole from axis hole；
Described fix from axis hole with described from axle one end；
The axle sleeve upper surface of described spindle hole periphery has two kinds of height, near the axle sleeve of the described spindle hole periphery from axis hole side
Upper surface is higher than the axle sleeve upper surface away from the described spindle hole periphery from axis hole side；
Flush with the chamfering bottom of described main shaft the first end away from the axle sleeve upper surface of the described spindle hole periphery from axis hole side；
Weld together with the chamfering bottom of described main shaft the first end away from the axle sleeve of the described spindle hole periphery from axis hole side.
Rocker arm body the most according to claim 1, it is characterised in that
The difference of two kinds of height of the axle sleeve upper surface of spindle hole periphery is more than or equal to the chamfer height of described main shaft the first end.
3. the manufacture method of the rocker arm body described in a claim 1, it is characterised in that comprise the following steps:
One. described main shaft the first end interference fit is pressed in the spindle hole of described axle sleeve, away from the described main shaft from axis hole side
The axle sleeve upper surface of hole periphery flushes with the chamfering bottom of described main shaft the first end；
Two. along away from the described spindle hole periphery from axis hole side, use method of laser welding, will be far from described from axis hole side
The axle sleeve upper surface of spindle hole periphery welds together with the chamfering bottom of described main shaft the first end.
The manufacture method of rocker arm body the most according to claim 3, it is characterised in that
In step 2, during laser welding, beam direction is along the axle sleeve upper surface away from the described spindle hole periphery from axis hole side
Weld with the centrage of the chamfering angulation of main shaft the first end.
The manufacture method of rocker arm body the most according to claim 4, it is characterised in that
During laser welding, negative out of focus mode is used to weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310097843.3A CN104074861B (en) | 2013-03-25 | 2013-03-25 | Rocker arm body and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310097843.3A CN104074861B (en) | 2013-03-25 | 2013-03-25 | Rocker arm body and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074861A CN104074861A (en) | 2014-10-01 |
| CN104074861B true CN104074861B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310097843.3A Expired - Fee Related CN104074861B (en) | 2013-03-25 | 2013-03-25 | Rocker arm body and manufacture method thereof |
Country Status (1)
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| CN (1) | CN104074861B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874918A (en) * | 2015-06-12 | 2015-09-02 | 温州大学 | Method for performing composite strengthening on welding seam of split type transmission shaft through rectangular laser spots |
| CN107289000B (en) * | 2017-07-01 | 2023-06-16 | 北方联创通信有限公司 | Angle slide rail connecting rod device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009016687A1 (en) * | 2009-04-07 | 2009-10-29 | Daimler Ag | Exhaust gas turbocharger comprises a turbine housing with a diffusor forming a flow channel and with a flange for the connection to a further component, where the diffusor and the flange are connected with one another |
| CN201581730U (en) * | 2009-11-26 | 2010-09-15 | 张明亮 | Bush type hinge |
| US9120184B2 (en) * | 2011-04-18 | 2015-09-01 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for manufacturing vehicle power transmission device |
| CN102837113A (en) * | 2012-10-15 | 2012-12-26 | 黄石新兴管业有限公司 | Method for automatically welding ductile iron pipe fitting |
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| CN104074861A (en) | 2014-10-01 |
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Granted publication date: 20161228 Termination date: 20200325 |
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