CN1927498A - Radius variation and mouth reducing method for radius-variable short tube - Google Patents
Radius variation and mouth reducing method for radius-variable short tube Download PDFInfo
- Publication number
- CN1927498A CN1927498A CN 200610126090 CN200610126090A CN1927498A CN 1927498 A CN1927498 A CN 1927498A CN 200610126090 CN200610126090 CN 200610126090 CN 200610126090 A CN200610126090 A CN 200610126090A CN 1927498 A CN1927498 A CN 1927498A
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- mould
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- rendering
- operatic tune
- reducing
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Abstract
The invention relates to a method for changing and reducing the diameter of diameter-variable short tube. Wherein, it is characterized in that: first preparing a mould whose upper bowl chamber has arc side wall and lower tubular chamber has smooth connection with the upper chamber, while their axles are in one line; the upper open of chamber is matched with the outer diameter of processed tube; the lower open of chamber is matched to the diameter-variable or reduced part of target tube; then putting the mould under compressor, and aiming the axle of mould to the compress central line of compressor; coating demould agent on the chamber wall of mould; putting tube on the mould and starting the compressor; controlling the descending strike of compressor; when the compressor reaches preset strike, stopping the compressor and demoulding. The invention has simple process and high accuracy.
Description
Technical field
The present invention relates to a kind of reducing short tube reducing, reducing method.
Background technology
Usually, the employed reducing short tube of the connection at pipeline reducing diameter place carries out brake forming after all adopting traditional sheet-metal unfolding blanking method again.This method was both taken a lot of work, and took material again, and had also increased longitudinal seam one at interface, and production efficiency is extremely low, difficult quality guarantee.In recent years, domestic also have an employing heating, make the reducing short tube with mould reducing or enlarging on press device, but this method power consumption is higher.The applicant had once applied for a kind of diameter-variable nozzle stub throat process, application number: 2005101066219, be to utilize two to roll omnipotent rolling on the roller bearing that bed or three roll bed a mold is installed, process, its advantage is: the easy processing of technology is quick, once can finish two reducing short tube processing simultaneously, and a mold can be used for making the reducing short tube of multiple bore.Though the existing processing method of this technology has had bigger progress, it is complicated that technology controlling and process still shows, and precision prescribed is higher during cutting.
Summary of the invention
The purpose of this invention is to provide a kind of simple, convenient, quick, accurately process reducing short tube reducing, the reducing method of reducing short tube.
Method of the present invention is: bowl-shape an actor's rendering of an operatic tune, bottom an actor's rendering of an operatic tune of at first making a top an actor's rendering of an operatic tune and be sidewall and being cambered surface is the mould with the smooth pipe shape an actor's rendering of an operatic tune that links to each other of top an actor's rendering of an operatic tune cavity, and the axis of upper and lower two parts an actor's rendering of an operatic tune is a same straight line, the external diameter of back cut diameter of mould an actor's rendering of an operatic tune and pipe to be processed is complementary, and the lower port diameter of mould an actor's rendering of an operatic tune is consistent with the reducing or the reducing outer bore partly of target pipe; Then mould is placed under the forcing press, make the axis of mould aim at the center line that presses down of forcing press, on an actor's rendering of an operatic tune wall of mould, coat releasing agent, pipe to be processed is placed on the mould, the starting pressure machine, and the controlled pressure machine press down stroke, when forcing press be depressed into set stroke after, forcing press quits work, and will process the pipe fitting demoulding.
Advantage of the present invention is: method is simple, and the processing pipe fitting is convenient, quick, accurate, both can carry out reducing to pipe, can carry out reducing to pipe again.
Description of drawings
Fig. 1 is the forming principle schematic diagram that pipe is carried out reducing; Fig. 2 is the forming principle schematic diagram that pipe is carried out reducing.
The specific embodiment
With reference to accompanying drawing, method of the present invention is: bowl-shape an actor's rendering of an operatic tune, bottom an actor's rendering of an operatic tune of at first making a top an actor's rendering of an operatic tune and be sidewall and being cambered surface is the mould 2 with the smooth pipe shape an actor's rendering of an operatic tune that links to each other of top an actor's rendering of an operatic tune cavity, and the axis of upper and lower two parts an actor's rendering of an operatic tune is a same straight line, the external diameter of back cut diameter of mould an actor's rendering of an operatic tune and pipe to be processed 1 is complementary, and the lower port diameter of mould an actor's rendering of an operatic tune is consistent with the reducing or the reducing outer bore partly of target pipe; Then mould is placed under the forcing press, make the axis of mould aim at the center line that presses down of forcing press, on an actor's rendering of an operatic tune wall of mould, coat releasing agent, pipe to be processed 1 is placed on the mould 2, the starting pressure machine, and the controlled pressure machine press down stroke, when forcing press be depressed into set stroke after, forcing press quits work, and will process the pipe fitting demoulding.
Embodiment 1, and pipe is carried out reducing:
With reference to accompanying drawing 1, prepare mould 2 as stated above, pipe to be processed 1 is placed on the mould 2, the starting pressure machine, the controlled pressure machine press down stroke, make the end opening of pipe 1 be pressed onto the bottom position of mould 2 top an actor's rendering of an operatic tune after, forcing press quits work, to process the pipe fitting demoulding, promptly finish necking forming pipe.
Embodiment 2, and pipe is carried out reducing:
With reference to accompanying drawing 2, prepare mould 2 as stated above, pipe to be processed 1 is placed on the mould 2, the starting pressure machine, the controlled pressure machine press down stroke, make the end opening of pipe 1 be pressed onto the precalculated position of mould 2 bottom an actor's rendering of an operatic tune after, forcing press quits work, to process the pipe fitting demoulding, promptly finish reducing moulding pipe.
According to method of the present invention, if prolong the stroke that presses down of forcing press, make that pipe to be processed is whole to be passed through from mould an actor's rendering of an operatic tune, then a thick pipe can be become a mini diameter tube, make the reducing of whole pipe.
Claims (1)
1, a kind of reducing short tube reducing, reducing method, it is characterized in that: bowl-shape an actor's rendering of an operatic tune, bottom an actor's rendering of an operatic tune of at first making a top an actor's rendering of an operatic tune and be sidewall and being cambered surface is the mould with the smooth pipe shape an actor's rendering of an operatic tune that links to each other of top an actor's rendering of an operatic tune cavity, and the axis of upper and lower two parts an actor's rendering of an operatic tune is a same straight line, the external diameter of back cut diameter of mould an actor's rendering of an operatic tune and pipe to be processed is complementary, and the lower port diameter of mould an actor's rendering of an operatic tune is consistent with the reducing or the reducing outer bore partly of target pipe; Then mould is placed under the forcing press, make the axis of mould aim at the center line that presses down of forcing press, on an actor's rendering of an operatic tune wall of mould, coat releasing agent, pipe to be processed is placed on the mould, the starting pressure machine, and the controlled pressure machine press down stroke, when forcing press be depressed into set stroke after, forcing press quits work, and will process the pipe fitting demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610126090 CN1927498A (en) | 2006-08-30 | 2006-08-30 | Radius variation and mouth reducing method for radius-variable short tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610126090 CN1927498A (en) | 2006-08-30 | 2006-08-30 | Radius variation and mouth reducing method for radius-variable short tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1927498A true CN1927498A (en) | 2007-03-14 |
Family
ID=37857724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610126090 Pending CN1927498A (en) | 2006-08-30 | 2006-08-30 | Radius variation and mouth reducing method for radius-variable short tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1927498A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927301A (en) * | 2010-08-10 | 2010-12-29 | 赵铎 | Cold compression necking process of reducing short tube |
| CN107695621A (en) * | 2017-09-14 | 2018-02-16 | 宁国昕远金属制品有限公司 | A kind of inner metal sleeve processing method |
| CN107866496A (en) * | 2016-09-28 | 2018-04-03 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of lower cone forming tool and method for being used to interfere pumping nail double tapered bushing |
-
2006
- 2006-08-30 CN CN 200610126090 patent/CN1927498A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927301A (en) * | 2010-08-10 | 2010-12-29 | 赵铎 | Cold compression necking process of reducing short tube |
| CN107866496A (en) * | 2016-09-28 | 2018-04-03 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of lower cone forming tool and method for being used to interfere pumping nail double tapered bushing |
| CN107866496B (en) * | 2016-09-28 | 2019-07-09 | 中国航空制造技术研究院 | It is a kind of for interfering the lower cone forming tool and method of pumping nail double tapered bushing |
| CN107695621A (en) * | 2017-09-14 | 2018-02-16 | 宁国昕远金属制品有限公司 | A kind of inner metal sleeve processing method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |