CN102398140A - Interference fit assembly process for bottom bracket, and bottom bracket supporting tube for fitness bike - Google Patents
Interference fit assembly process for bottom bracket, and bottom bracket supporting tube for fitness bike Download PDFInfo
- Publication number
- CN102398140A CN102398140A CN2010102788730A CN201010278873A CN102398140A CN 102398140 A CN102398140 A CN 102398140A CN 2010102788730 A CN2010102788730 A CN 2010102788730A CN 201010278873 A CN201010278873 A CN 201010278873A CN 102398140 A CN102398140 A CN 102398140A
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- China
- Prior art keywords
- bottom bracket
- way pipe
- welding
- pipe
- supporting tube
- 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.)
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- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses an interference fit assembly process for a bottom bracket and a bottom bracket supporting tube for a fitness bike. The method comprises the following steps of: adjusting the pressure of an oil press to be moderate, and checking the appearance conditions of the bottom bracket and the bottom bracket supporting tube; pressing the bottom bracket into a hole of the bottom bracket supporting tube by using a pressing fixture and the oil press to ensure the pressing size and the concentricity of the bottom bracket; and finally, fixing the bottom bracket supporting tube on a welding clamp, and performing carbon dioxide arc welding on the bottom bracket supporting tube and the welding clamp, performing spot welding, and then performing full-length welding. The process has the advantages of improving welding efficiency and performance and quality of a product and is convenient to operate.
Description
Technical field:
The present invention relates to a kind of five-way pipe of exercycle and interference fit packaging technology of five-way pipe stay pipe of being used for.
Background technology:
Nowadays, five-way pipe and five-way pipe stay pipe adopt matched in clearance, though in welding; Can put part, the deflection that the five-way pipe produces during still owing to welding is excessive, can cause the distortion of five-way pipe orifice excessive; Endoporus is the bearing pilot hole, like this, just has been not easy running in bearings; Or produce bearing and be pressed into the stuck phenomenon in back, to make troubles to following process, working (machining) efficiency is low.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide a kind of easy to operate, improve welding efficiency, improve performance of products and the five-way pipe that is used for exercycle of quality and the interference fit packaging technology of five-way pipe stay pipe.
The object of the invention is realized through following technical scheme: a kind of five-way pipe of exercycle and interference fit packaging technology of five-way pipe stay pipe of being used for may further comprise the steps:
A, the pressure of hydraulic press is adjusted to moderate state;
The state of appearance of B, inspection five-way pipe and five-way pipe stay pipe;
C, use are pressed into fixture the effective hydraulic press of five-way are pressed in the hole of five-way pipe stay pipe, guarantee to be pressed into size and five-way pipe concentricity;
D, five-way pipe stay pipe are fixed on the weld jig, and adopt carbon dioxide gas arc welding said two devices to be welded first spot welding, full weld again.
Further improvement of the present invention is: adopt the H08MnSiA gas welding machine among the step D, gage of wire is 1.0mm, and arc voltage is 18V, and welding current is 110A.
The present invention compared with prior art has the following advantages: the present invention is with changing interference fit between five-way pipe and the five-way pipe stay pipe; During welding because five-way pipe stay pipe has limited this distortion that when welding, produces of five-way pipe; Because the five-way pipe that lets very close to each other has been out of shape, so the five-way dead eye deflection in the five-way pipe is little, it is easy that bearing is installed; Can stuck phenomenon not take place, improved performance of products and quality.
The specific embodiment:
In order to deepen to understanding of the present invention, will combine embodiment that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
The present invention is used for a kind of specific embodiment of interference fit packaging technology of five-way pipe and the five-way pipe stay pipe of exercycle, may further comprise the steps:
Pressure with hydraulic press is adjusted to moderate state earlier; Afterwards, the state of appearance of inspection five-way pipe and five-way pipe stay pipe; Then, use is pressed into fixture the effective hydraulic press of five-way is pressed in the hole of five-way pipe stay pipe, guarantees to be pressed into size and five-way pipe concentricity; At last, five-way pipe stay pipe is fixed on the weld jig, and adopts carbon dioxide gas arc welding said two devices to be welded first spot welding, full weld again.Adopt the H08MnSiA gas welding machine during welding, gage of wire is 1.0mm, and arc voltage is 18V, and welding current is 110A.
The present invention is with changing interference fit between five-way pipe and the five-way pipe stay pipe; During welding because five-way pipe stay pipe has limited this distortion that when welding, produces of five-way pipe; Because the five-way pipe that lets very close to each other has been out of shape, so the five-way dead eye deflection in the five-way pipe is little, it is easy that bearing is installed; Can stuck phenomenon not take place, improved performance of products and quality.
Claims (2)
1. one kind is used for the five-way pipe of exercycle and the interference fit packaging technology of five-way pipe stay pipe, it is characterized in that: may further comprise the steps:
A, the pressure of hydraulic press is adjusted to moderate state;
The state of appearance of B, inspection five-way pipe and five-way pipe stay pipe;
C, use are pressed into fixture the effective hydraulic press of five-way are pressed in the hole of five-way pipe stay pipe, guarantee to be pressed into size and five-way pipe concentricity;
D, five-way pipe stay pipe are fixed on the weld jig, and adopt carbon dioxide gas arc welding said two devices to be welded first spot welding, full weld again.
2. according to the said five-way pipe of exercycle and the interference fit packaging technology of five-way pipe stay pipe of being used for of claim 1, it is characterized in that: adopt the H08MnSiA gas welding machine among the said step D, gage of wire is 1.0mm, and arc voltage is 18V, and welding current is 110A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102788730A CN102398140A (en) | 2010-09-13 | 2010-09-13 | Interference fit assembly process for bottom bracket, and bottom bracket supporting tube for fitness bike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102788730A CN102398140A (en) | 2010-09-13 | 2010-09-13 | Interference fit assembly process for bottom bracket, and bottom bracket supporting tube for fitness bike |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102398140A true CN102398140A (en) | 2012-04-04 |
Family
ID=45881011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102788730A Pending CN102398140A (en) | 2010-09-13 | 2010-09-13 | Interference fit assembly process for bottom bracket, and bottom bracket supporting tube for fitness bike |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102398140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866025A (en) * | 2016-12-26 | 2019-06-11 | 黄红梅 | A kind of welding wire mechanism for the assembling of anode part iron hoop sleeve |
-
2010
- 2010-09-13 CN CN2010102788730A patent/CN102398140A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866025A (en) * | 2016-12-26 | 2019-06-11 | 黄红梅 | A kind of welding wire mechanism for the assembling of anode part iron hoop sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |