CN1194827C - Method for processing thin wall pipefittings with changed diameter - Google Patents
Method for processing thin wall pipefittings with changed diameter Download PDFInfo
- Publication number
- CN1194827C CN1194827C CNB021293392A CN02129339A CN1194827C CN 1194827 C CN1194827 C CN 1194827C CN B021293392 A CNB021293392 A CN B021293392A CN 02129339 A CN02129339 A CN 02129339A CN 1194827 C CN1194827 C CN 1194827C
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- CN
- China
- Prior art keywords
- pipe fitting
- diameter
- pipe
- pipe member
- seamless pipe
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- 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.)
- Expired - Fee Related
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- Forging (AREA)
- Extrusion Of Metal (AREA)
- Metal Extraction Processes (AREA)
- Turning (AREA)
Abstract
The present invention relates to a method for processing a thin wall diameter changing pipe member, which comprises the following steps: according to the kind of materials required by a pipe member, a seamless pipe of the same kind of materials is adopted, the size is selected according to the inner and the outer diameters of the required pipe member, and the outer diameter of the seamless pipe is 0.5mm to 1mm larger than that of the required pipe member; a core axle is prepared, the outer diameter of the core axle is matched with the inner diameter of the seamless pipe, the shape of the core axle is identical to that of the required pipe member, and the core axle is inserted into the seamless pipe; the matched workpieces rotate at high speed, and a hard alloy cutter head is used for enlarging the pressure on a diameter changing position and squeezing for generating heat. When the temperature reaches 650DEG C to 730DEG C, the hard alloy cutter head is used for squeezing in the radial direction and moving axially, and thus, the workpieces are deformed. A blank squeezed and reduced in diameter by using the processing method is lathed finely for shaping or processed by other processes, so that working hours can be shortened, lots of raw materials, tools, equipment, energy sources, etc. can be saved, for example, the raw materials of each guiding tooth holder of a locomotive tread type unit brake cylinder processed can be saved by 2.7kg, the working hour quota is reduced by 46%, and the cost is lowered by 50%.
Description
Technical field
The present invention relates to a kind of processing method of pipe fitting, specifically, relate to a kind of processing method of thin-walled reducer pipe fitting.
Background technology
The thin-walled reducer pipe fitting, it is very difficult guiding the processing of toothholder as locomotive tread formula unit brake cylinder.All be to adopt round steel to carry out turning at present, this kind processing method will machine away wide variety of materials, makes it become iron filings, can't help wasting aspect material greatly, all can cause great consumption at aspects such as artificial, cutter, equipment, the energy simultaneously.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, the processing method of the low thin-walled reducer pipe fitting of a kind of cost is provided.
The processing method of thin-walled reducer pipe fitting of the present invention, its step is as follows:
A, select the seamless pipe of same type of material for use according to the kind of pipe fitting material requested, its size is selected according to the inside and outside footpath of desired pipe fitting, and its external diameter is than the big 0.5mm-1mm of external diameter of the pipe fitting of wanting;
B, preparation mandrel, the external diameter of mandrel cooperates with the internal diameter of seamless pipe, and its shape is identical with the shape of desired pipe fitting, is inserted in the seamless pipe;
C, at a high speed rotate the workpiece that the 2nd step obtained, give birth to heat in the extruding of reducing place intensified pressure, when temperature reaches 650 ℃-730 ℃, with the carbide bit radial compression and move axially, make workpiece deformation with carbide bit.
When rotating at a high speed the workpiece that the 2nd step obtained, the rotating speed of workpiece is more than 1200 rev/mins, and feed is 0.2m/r.
Adopt the processing method of attenuation wall of the present invention footpath pipe fitting, through the blank behind the extruding undergauge, carry out the finish turning shaping again, or other operation, can save a large amount of raw material, shorten man-hour, for example, every of the guiding toothholder raw material of processing locomotive tread formula unit brake cylinder can be saved 2.7kg, and the hour norm has reduced by 46%, and cost has reduced by 50%.
Description of drawings
Fig. 1 is the working state figure that adopts processing method of the present invention.
The specific embodiment
Referring to Fig. 1, the processing method of thin-walled reducer pipe fitting of the present invention is a seamless pipe 1 of selecting same type of material according to the required material category of pipe fitting for use, and its size is selected according to the inside and outside footpath of desired pipe fitting, and external diameter is than the big 0.5mm-1mm of external diameter of desired pipe fitting.Preparation mandrel 2, the external diameter of this mandrel cooperates with the internal diameter of seamless pipe, its shape is identical with the shape of want pipe fitting, be inserted in the seamless pipe 1, rotate above-mentioned counterpart then at a high speed, its speed is reached more than 1200 rev/mins, adopt the carbide alloy squeezing knife tool, give birth to heat in the extruding of reducing place intensified pressure as the carbide cutter tool of YW1, when temperature reaches 650 ℃-730 ℃, surface of the work reddens, deliquescing, this moment is distortion very easily, again with the carbide bit radial compression and move axially, its feed is 0.2m/r, make workpiece deformation, promptly finish undergauge work, obtain needed reducer pipe fitting.
The equipment of rotation can adopt engine lathe at a high speed, as CA6140,
Adopt the processing method of attenuation wall of the present invention footpath pipe fitting, through the blank behind extruding, the undergauge, carry out the finish turning shaping again, or other operation, can shorten man-hour, save a large amount of raw material, cutter, equipment and the energy etc., for example, every of the guiding toothholder raw material of processing locomotive tread formula unit brake cylinder can be saved 2.7kg, and the hour norm has reduced by 46%, and cost has reduced by 50%.
Claims (2)
1. the processing method of thin-walled reducer pipe fitting, its step is as follows:
A, select the seamless pipe (1) of same type of material for use according to the kind of pipe fitting material requested, its size is selected according to the inside and outside footpath of desired pipe fitting, and its external diameter is than the big 0.5mm-1mm of external diameter of the pipe fitting of wanting;
B, preparation mandrel (2), the external diameter of mandrel cooperates with the internal diameter of seamless pipe, and its shape is identical with the shape of desired pipe fitting, is inserted in the seamless pipe;
C, at a high speed rotate the workpiece that the 2nd step obtained, give birth to heat in the extruding of reducing place intensified pressure, when temperature reaches 650 ℃-730 ℃, with the carbide bit radial compression and move axially, make workpiece deformation with carbide bit.
2. processing method according to claim 1, when it is characterized in that rotating at a high speed the workpiece that the 2nd step obtained, workpiece rotational frequency is more than 1200 rev/mins, feed is 0.2m/r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021293392A CN1194827C (en) | 2002-09-02 | 2002-09-02 | Method for processing thin wall pipefittings with changed diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021293392A CN1194827C (en) | 2002-09-02 | 2002-09-02 | Method for processing thin wall pipefittings with changed diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1480270A CN1480270A (en) | 2004-03-10 |
| CN1194827C true CN1194827C (en) | 2005-03-30 |
Family
ID=34144117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021293392A Expired - Fee Related CN1194827C (en) | 2002-09-02 | 2002-09-02 | Method for processing thin wall pipefittings with changed diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194827C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042061B (en) * | 2013-01-08 | 2015-04-01 | 青岛勤德索具有限公司 | Intelligent pipe internal-diameter changing system and pipe internal-diameter changing method |
| CN104014834B (en) * | 2014-05-27 | 2017-02-01 | 江西洪都航空工业集团有限责任公司 | Thin-wall conduit machining method |
-
2002
- 2002-09-02 CN CNB021293392A patent/CN1194827C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1480270A (en) | 2004-03-10 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 |