CN112872107A - Method for reducing grooves in bottoming of aluminum alloy sleeve - Google Patents
Method for reducing grooves in bottoming of aluminum alloy sleeve Download PDFInfo
- Publication number
- CN112872107A CN112872107A CN202110389437.9A CN202110389437A CN112872107A CN 112872107 A CN112872107 A CN 112872107A CN 202110389437 A CN202110389437 A CN 202110389437A CN 112872107 A CN112872107 A CN 112872107A
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- Prior art keywords
- aluminum alloy
- alloy sleeve
- bottoming
- sleeve
- tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
- B21D1/08—Removing local distortions of hollow bodies made from sheet metal
Abstract
The invention discloses a method for reducing grooves in the bottoming of an aluminum alloy sleeve, which has the following advantages: (1) the pressure of the expansion shaft is matched with the tensile strength of the aluminum alloy sleeve, so that the sliding between the expansion shaft and the aluminum alloy sleeve can be avoided, and the external pressure of the expansion shaft on the aluminum alloy sleeve can be reduced; (2) the stress release on the aluminum alloy sleeve can be effectively buffered by adjusting the starting pressure, and the phenomenon that the surface of the aluminum alloy sleeve is grooved due to the fact that the stress release rate is too high is avoided.
Description
Technical Field
The invention particularly relates to a method for reducing grooves in the bottoming of an aluminum alloy sleeve
Background
For the purpose of saving production cost, a 6.0-7.0mm cast-rolling blank is often used in the production process to manufacture an aluminum alloy sleeve to replace the existing steel sleeve and paper core sleeve, but because the hardness and strength of the aluminum alloy sleeve are low, a bottom groove phenomenon often occurs during finishing production, and in a serious condition, the aluminum alloy sleeve directly collapses and is scrapped, so that repeated reworking production is caused, and the production efficiency and the yield are reduced.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a method for reducing grooves generated when an aluminum alloy sleeve is bottomed, which comprises the following steps:
the method comprises the following steps: screening qualified aluminum alloy sleeves;
step two: adjusting the shaft expansion pressure in the bottoming machine, wherein the shaft expansion pressure is matched with the tensile strength of an aluminum alloy sleeve to be bottomed;
step three: adjusting the head of the bottoming machine to ensure that the position of the head corresponds to the middle position of the aluminum alloy sleeve;
step four: and adjusting the starting pressure of the bottoming machine, and starting the bottoming work of the aluminum alloy sleeve.
Furthermore, the aluminum alloy sleeve in the second step is made of a No. 1235 aluminum alloy casting blank, and the tensile strength of the No. 1235 aluminum alloy casting blank is 110 +/-10 MPa.
Furthermore, the shaft expansion pressure corresponding to the tensile strength of the No. 1235 aluminum alloy casting blank in the step two is not more than 3 MPa.
Furthermore, the aluminum alloy sleeve in the second step is made of 8011 aluminum alloy casting blank, and the 8011 aluminum alloy casting blank has a tensile strength of 120 +/-10 MPa.
Furthermore, the axial expansion pressure corresponding to the tensile strength of the aluminum alloy casting blank of 8011 in the second step is not more than 3.5 MPa.
Furthermore, the starting pressure of the bottoming machine in the fourth step is 4.0 +/-0.3 kg/mm2。
Has the advantages that: the invention discloses a method for reducing grooves in the bottoming of an aluminum alloy sleeve, which has the following advantages: (1) the pressure of the expansion shaft is matched with the tensile strength of the aluminum alloy sleeve, so that the sliding between the expansion shaft and the aluminum alloy sleeve can be avoided, and the external pressure of the expansion shaft on the aluminum alloy sleeve can be reduced; (2) the stress release on the aluminum alloy sleeve can be effectively buffered by adjusting the starting pressure, and the phenomenon that the surface of the aluminum alloy sleeve is grooved due to the fact that the stress release rate is too high is avoided.
Drawings
FIG. 1 is a schematic flow diagram of a method of reducing the occurrence of grooves in the bottoming of an aluminum alloy sleeve;
detailed description of the preferred embodiments
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the following examples and the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
A method of reducing the occurrence of grooves in the bottoming of aluminum alloy sleeves, comprising the steps of:
the method comprises the following steps: screening qualified aluminum alloy sleeves;
step two: adjusting the shaft expansion pressure in the bottoming machine, wherein the shaft expansion pressure is matched with the tensile strength of an aluminum alloy sleeve to be bottomed;
step three: adjusting the head of the bottoming machine to ensure that the position of the head corresponds to the middle position of the aluminum alloy sleeve;
step four: and adjusting the starting pressure of the bottoming machine, and starting the bottoming work of the aluminum alloy sleeve.
In this embodiment, the material of the aluminum alloy sleeve in the second step is a No. 1235 aluminum alloy casting blank, the tensile strength of the No. 1235 aluminum alloy casting blank is 110 ± 10MPa, and the axial expansion pressure corresponding to the tensile strength of the No. 1235 aluminum alloy casting blank is not more than 3 MPa.
In this embodiment, the aluminum alloy sleeve in the second step is made of a 8011 aluminum alloy casting blank, the 8011 aluminum alloy casting blank has a tensile strength of 120 ± 10MPa, and an axial expansion pressure corresponding to the 8011 aluminum alloy casting blank does not exceed 3.5 MPa.
In the embodiment, the starting pressure of the bottoming machine in the fourth step is 4.0 +/-0.3 kg/mm2。
The invention discloses a method for reducing grooves in the bottoming of an aluminum alloy sleeve, which has the following advantages: (1) the pressure of the expansion shaft is matched with the tensile strength of the aluminum alloy sleeve, so that the sliding between the expansion shaft and the aluminum alloy sleeve can be avoided, and the external pressure of the expansion shaft on the aluminum alloy sleeve can be reduced; (2) the stress release on the aluminum alloy sleeve can be effectively buffered by adjusting the starting pressure, and the phenomenon that the surface of the aluminum alloy sleeve is grooved due to the fact that the stress release rate is too high is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A method for reducing the occurrence of grooves in the bottoming of an aluminum alloy sleeve is characterized by comprising the following steps of:
the method comprises the following steps: screening qualified aluminum alloy sleeves;
step two: adjusting the shaft expansion pressure in the bottoming machine, wherein the shaft expansion pressure is matched with the tensile strength of an aluminum alloy sleeve to be bottomed;
step three: adjusting the head of the bottoming machine to ensure that the position of the head corresponds to the middle position of the aluminum alloy sleeve;
step four: and adjusting the starting pressure of the bottoming machine, and starting the bottoming work of the aluminum alloy sleeve.
2. The method as claimed in claim 1, wherein the aluminum alloy sleeve in the second step is a No. 1235 aluminum alloy cast slab, and the No. 1235 aluminum alloy cast slab has a tensile strength of 110 ± 10 MPa.
3. The method of claim 2, wherein the axial expansion pressure corresponding to the tensile strength of the No 1235 aluminum alloy billet in step two is no greater than 3 MPa.
4. The method as claimed in claim 1, wherein the aluminum alloy sleeve in the second step is made of 8011 aluminum alloy casting blank, and the 8011 aluminum alloy casting blank has a tensile strength of 120 ± 10 MPa.
5. The method of claim 1, wherein the axial expansion pressure corresponding to 8011 aluminum alloy billet tensile strength in step two is not more than 3.5 MPa.
6. The method as claimed in claim 1, wherein the starting pressure of the bottoming machine in the fourth step is 4.0 ± 0.3kg/mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389437.9A CN112872107B (en) | 2021-04-12 | 2021-04-12 | Method for reducing grooves in bottoming of aluminum alloy sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110389437.9A CN112872107B (en) | 2021-04-12 | 2021-04-12 | Method for reducing grooves in bottoming of aluminum alloy sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112872107A true CN112872107A (en) | 2021-06-01 |
| CN112872107B CN112872107B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110389437.9A Active CN112872107B (en) | 2021-04-12 | 2021-04-12 | Method for reducing grooves in bottoming of aluminum alloy sleeve |
Country Status (1)
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| CN (1) | CN112872107B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408246A2 (en) * | 1989-07-10 | 1991-01-16 | Deublin Company | Expanding shaft assembly |
| DE4239832A1 (en) * | 1992-11-26 | 1994-06-01 | Richard Schlotter | Yarn bobbin - is of a cast aluminium alloy blank turned to the accurate dimensions and age hardened or covered with a hard surface coating |
| EP0784227A1 (en) * | 1996-01-10 | 1997-07-16 | Agfa-Gevaert N.V. | Winding core |
| US5996929A (en) * | 1997-04-10 | 1999-12-07 | Kvaerner Metals Clecim | Coiler spindle for winding a band-type product and its use |
| TW484617U (en) * | 2001-05-15 | 2002-04-21 | Shi-Tsai Chen | Pneumatic cover clip |
| CN105645190A (en) * | 2016-02-27 | 2016-06-08 | 浙江三信智能机械科技有限公司 | Paper steel shaft |
| CN106966232A (en) * | 2017-05-23 | 2017-07-21 | 长兴夹浦钇航纺织厂 | A kind of textile machinery reel |
| CN108135373A (en) * | 2015-08-19 | 2018-06-08 | 南方电缆有限责任公司 | Independently rotary flange and attachable mandrel pore adapter |
| CN210045792U (en) * | 2019-04-04 | 2020-02-11 | 山西阳煤化工机械（集团）有限公司 | Can be used to different diameter barrels indent circle supporting device |
| CN210558661U (en) * | 2019-06-28 | 2020-05-19 | 石家庄市建南机电技术研究所 | Antenna soft oscillator winding and unwinding wheel |
| CN111843248A (en) * | 2020-07-22 | 2020-10-30 | 齐长龙 | Supporting and collecting device for laser cutting equipment |
| CN212032915U (en) * | 2020-04-22 | 2020-11-27 | 厦门市榕鑫达实业有限公司 | Contact forming tool |
-
2021
- 2021-04-12 CN CN202110389437.9A patent/CN112872107B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408246A2 (en) * | 1989-07-10 | 1991-01-16 | Deublin Company | Expanding shaft assembly |
| DE4239832A1 (en) * | 1992-11-26 | 1994-06-01 | Richard Schlotter | Yarn bobbin - is of a cast aluminium alloy blank turned to the accurate dimensions and age hardened or covered with a hard surface coating |
| EP0784227A1 (en) * | 1996-01-10 | 1997-07-16 | Agfa-Gevaert N.V. | Winding core |
| US5996929A (en) * | 1997-04-10 | 1999-12-07 | Kvaerner Metals Clecim | Coiler spindle for winding a band-type product and its use |
| TW484617U (en) * | 2001-05-15 | 2002-04-21 | Shi-Tsai Chen | Pneumatic cover clip |
| CN108135373A (en) * | 2015-08-19 | 2018-06-08 | 南方电缆有限责任公司 | Independently rotary flange and attachable mandrel pore adapter |
| CN105645190A (en) * | 2016-02-27 | 2016-06-08 | 浙江三信智能机械科技有限公司 | Paper steel shaft |
| CN106966232A (en) * | 2017-05-23 | 2017-07-21 | 长兴夹浦钇航纺织厂 | A kind of textile machinery reel |
| CN210045792U (en) * | 2019-04-04 | 2020-02-11 | 山西阳煤化工机械（集团）有限公司 | Can be used to different diameter barrels indent circle supporting device |
| CN210558661U (en) * | 2019-06-28 | 2020-05-19 | 石家庄市建南机电技术研究所 | Antenna soft oscillator winding and unwinding wheel |
| CN212032915U (en) * | 2020-04-22 | 2020-11-27 | 厦门市榕鑫达实业有限公司 | Contact forming tool |
| CN111843248A (en) * | 2020-07-22 | 2020-10-30 | 齐长龙 | Supporting and collecting device for laser cutting equipment |
Non-Patent Citations (1)
| Title |
|---|
| 张益民等: "压接式铝合金定位器质量分析", 《西铁科技》 * |
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| CN112872107B (en) | 2023-04-21 |
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