CN201301928Y - Sleeve - Google Patents
Sleeve Download PDFInfo
- Publication number
- CN201301928Y CN201301928Y CNU2008202160202U CN200820216020U CN201301928Y CN 201301928 Y CN201301928 Y CN 201301928Y CN U2008202160202 U CNU2008202160202 U CN U2008202160202U CN 200820216020 U CN200820216020 U CN 200820216020U CN 201301928 Y CN201301928 Y CN 201301928Y
- Authority
- CN
- China
- Prior art keywords
- time
- sleeve
- flat filament
- blank
- feeding
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Wire Processing (AREA)
Abstract
The utility model provides a sleeve with high roundness precision, which comprises a through hole along the axis line of a cylinder, while the roundness (inner roundness or outer roundness) is 0 to 0.03mm. The coiling method of the sleeve comprises: bending two ends of a blank whose length equals to the unfold length of the sleeve into 1/4 arc respectively; and coiling the blank into a round element.
Description
Technical field
The utility model relates to sleeve.
Background technique
Present domestic chain industry small dimension coiling sleeve is the technological level of eighties of last century the seventies substantially, and its process is: (1) presses sleeve length of run fracture, and (2) bend to " U " shape, and (3) roll into circle, (4) shaping.This method for coiling device therefor great advantage: cam control, simple in structure.But its disadvantage is: sleeve circularity is poor.Even there is the shaping of later process also to be difficult to improve its circularity precision.Its circularity (interior circularity or outer circularity) is generally in the 0.05-0.10mm scope.
The model utility content
The purpose of this utility model provides the high sleeve of a kind of circularity precision.
This sleeve, along having through hole on the cylindrical axis, its circularity (interior circularity or outer circularity) is 0-0.03mm.
For this sleeve, its method for coiling is that the blank two ends that length equals the sleeve length of run are respectively curved 1/4 circular arc, and then blank is rolled into circular pieces.Utilization rolls the principle of " long than short easy bending forming " in the bending process, changes the sequencing of conventional roll circle, and is difficult at first and quite easy afterwards, and the position elder generation bending that sleeve is difficult to be shaped is that the blank two ends respectively curve earlier 1/4 circular arc, curved again intermediate portion.Adopt this method for coiling, its circularity precision can be controlled in the 0-0.03mm scope.
As improvement, above-mentioned sleeve, the method that the blank two ends respectively curve 1/4 circular arc is: the flat filament that feeding is for the first time come carries out " U " shape bending for the first time; Mid point in " U " shape part cuts off (stub bar is a waste material, rejects) for the first time to flat filament; Flat filament is carried out the feeding second time and carries out " U " shape bending for the second time; Mid point in " U " shape part cuts off for the second time to flat filament, and at this time the part of Qie Xiaing is the blank of a complete sleeve.
As improvement, above-mentioned sleeve after flat filament cut off for the second time, repeats following step: flat filament is carried out the feeding second time and carries out " U " shape bending for the second time; Mid point in " U " shape part cuts off for the second time to flat filament.Flat filament repeats feeding for the second time, " U " shape bending for the second time, cuts off for the second time through after feeding for the first time, cutting off, and reaches continuous production.
As improvement, above-mentioned sleeve carries out shaping to circular pieces, and circularity is further improved.The method of circular pieces being carried out shaping can be successively by three wolfram steel circles with circular pieces.
Description of drawings
Fig. 1 is the flow chart of seven steps of this patent
Fig. 2 is the device construction figure that circular pieces carries out shaping
Embodiment
Referring to Fig. 1,2, the coiling sleeve step:
Step 1: flat filament feeding for the first time;
Step 2: rely on mould flat filament to be curved " U " shape of containing a semicircle;
Step 3: the mid point at semicircle utilizes cutoff tool to carry out the cut-out first time, and stub bar is a waste material, rejects, and 1/4 remaining on flat filament circular arc is the head of a sleeve part;
Step 4: the 2nd feeding of flat filament, at interval behind one section straight line again the pattern tool curve " U " shape of a semicircle;
Step 5: the mid point at this semicircle cuts off for the second time with cutoff tool, and at this time the part of Qie Xiaing is the blank of a complete sleeve;
Step 6: this blank is rolled into circular pieces after being admitted to volume sired results position;
Step 7: circular pieces carries out shaping by wolfram steel circle 8, wolfram steel circle 9, wolfram steel circle 10 more successively, obtains the sleeve that circularity further improves.
Repeating step 4-7 reaches continuous production.
Claims (6)
1. sleeve is characterized in that: along having through hole on the cylindrical axis, its circularity is 0-0.03mm.
2. sleeve according to claim 1 is characterized in that: this method for coiling sleeve is that the blank two ends that length equals the sleeve length of run are respectively curved 1/4 circular arc, and then blank is rolled into circular pieces.
3. sleeve according to claim 2 is characterized in that: the method that the blank two ends respectively curve 1/4 circular arc is: the flat filament that feeding is for the first time come carries out " U " shape bending for the first time; Mid point in " U " shape part cuts off for the first time to flat filament; Flat filament is carried out the feeding second time and carries out " U " shape bending for the second time; Mid point in " U " shape part cuts off for the second time to flat filament.
4. sleeve according to claim 3 is characterized in that: after flat filament is cut off for the second time, repeat following step: flat filament is carried out the feeding second time and carries out " U " shape bending for the second time; Mid point in " U " shape part cuts off for the second time to flat filament.
5. according to claim 2,3 or 4 described sleeves, it is characterized in that: circular pieces is carried out shaping.
6. the described sleeve of claim 5 is characterized in that: the method for circular pieces being carried out shaping is successively by three wolfram steel circles with circular pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202160202U CN201301928Y (en) | 2008-11-21 | 2008-11-21 | Sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202160202U CN201301928Y (en) | 2008-11-21 | 2008-11-21 | Sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301928Y true CN201301928Y (en) | 2009-09-02 |
Family
ID=41085554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202160202U Expired - Fee Related CN201301928Y (en) | 2008-11-21 | 2008-11-21 | Sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301928Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903213A (en) * | 2015-12-23 | 2017-06-30 | 沈阳斯普瑞机械加工有限公司 | A kind of open type elastic spacing snap ring cold-bending molding technology |
-
2008
- 2008-11-21 CN CNU2008202160202U patent/CN201301928Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903213A (en) * | 2015-12-23 | 2017-06-30 | 沈阳斯普瑞机械加工有限公司 | A kind of open type elastic spacing snap ring cold-bending molding technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101433925A (en) | Method for coiling sleeve | |
| CN100453204C (en) | Bars and tubes material unsymmetrical radial welding punched high performance precision blanking method | |
| CN102152089B (en) | Molding method of large-difference variable-diameter spinning pulley | |
| CN103691861B (en) | The Forging Technology that a kind of long bar intermediate pier is thick | |
| ATE306337T1 (en) | APPARATUS AND METHOD FOR HYDROFORMING A TUBULAR PART | |
| RU2007130154A (en) | METHOD FOR MANUFACTURING CONIC PISTON FINGERS | |
| CN201301928Y (en) | Sleeve | |
| CN201295722Y (en) | Pipe fittings processing die | |
| DE502004011081D1 (en) | METHOD AND DEVICE FOR MANUFACTURING A CYLINDRICAL HOLLOW RPGER FROM A BOARD | |
| CN203804054U (en) | One-time forming die of casing pipe wiring terminals | |
| CN202461212U (en) | Chain pipe coiling machine | |
| CN103406730B (en) | A kind of manufacturing process of bracing frame | |
| CN105921606B (en) | A kind of automobile metal accessory press-processing method | |
| CN202411129U (en) | Full-automatic deep drawing female die | |
| CN201448318U (en) | Pipe clamp head | |
| CN201832936U (en) | Locomotive deformed spring hook die | |
| CN103056224A (en) | Multi-row deep drawing progressive die of thermostat part | |
| CN201534190U (en) | Bar bending tool | |
| CN201361680Y (en) | Stepped mandrel forging mould of 3T or 5T hammer forging press | |
| CN216655833U (en) | Port engineering is ironbar lopping instrument for site operation | |
| CN101530871A (en) | Production method of shoe heel steel pipe | |
| CN102451875A (en) | Deformed spring hook mould | |
| CN101875175A (en) | Technology for processing reinforcement beam of automobile | |
| CN201371201Y (en) | Bending die of channel steel | |
| CN202447429U (en) | Dressing mechanism for chain pipe coiling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Universal Group Chain Drive Co.,Ltd. Assignor: Suzhou Universal Chain Transmission Co., Ltd. Contract record no.: 2011320000165 Denomination of utility model: Pressure swing adsorption oxygen generating unit of telescopic absorption device structure Granted publication date: 20090902 License type: Exclusive License Record date: 20110307 |
|
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU UNIVERSAL GROUP CO., LTD. Free format text: FORMER NAME: SUZHOU UNIVERSAL CHAIN TRANSMISSION CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215156 Jiangsu province Suzhou city Wuzhong District Town Stone Road No. 188 Patentee after: SUZHOU UNIVERSAL GROUP CO., LTD. Address before: 215156 Jiangsu province Suzhou city Wuzhong District Town Stone Road No. 188 Patentee before: Suzhou Universal Chain Transmission Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20161121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |