CN117753860B - Directional flow stretching method for shell product material - Google Patents
Directional flow stretching method for shell product material Download PDFInfo
- Publication number
- CN117753860B CN117753860B CN202311775961.5A CN202311775961A CN117753860B CN 117753860 B CN117753860 B CN 117753860B CN 202311775961 A CN202311775961 A CN 202311775961A CN 117753860 B CN117753860 B CN 117753860B
- Authority
- CN
- China
- Prior art keywords
- stretching
- cylinder
- side wall
- thickness
- flange surface
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 9
- 230000008719 thickening Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Forging (AREA)
Abstract
The invention discloses a directional flow stretching method of a shell product material, which comprises the following steps: stretching the round flat plate piece into an opening type cylinder with a conical surface at the upper end; the cylinder is continuously stretched to reduce the diameter, the height and the wall thickness of the cylinder, and a part of flange surface is formed at the opening of the cylinder; thinning and stretching the side wall of the cylinder to enable the material of the side wall of the cylinder to directionally flow to the flange surface; r angle shaping between the flange face and the side wall of the cylinder, and the thickness of the flange face is uniform through shaping and forced pressing, the directional flow of materials is realized through four steps under the condition of not increasing the thickness of raw materials, the purpose of thickening the flange face is achieved, the rest surface of the product can be ensured to meet the product requirement, the material thickening of the flange face can be ensured, the integral strength of a shell can be improved, the service life of the product is prolonged, the thickness of the flange face is increased on the premise of not increasing the thickness of the raw materials, and the purpose of saving the manufacturing cost is achieved.
Description
Technical Field
The invention relates to the technical field of stretching of shell products, in particular to a directional flow stretching method of shell product materials.
Background
The motor shell of the intelligent integrated brake system of the automobile IPB is adopted as a shell product, the design of the IPB shell is compact and durable, electronic elements are prevented from being damaged by external environmental factors such as bad weather, dust and moisture, reliability of an electric system of the automobile is guaranteed, various functions of the automobile are guaranteed to operate normally, once the braking effect of the motor cannot meet the requirement of the brake system, the IPB can rapidly release brake fluid, and a brake caliper is started to brake, so that the shell product has a sealing requirement, an airtight test is required to be carried out under the air pressure of 0.5MPa, no leakage is required, the material thickness of a flange face is specified on the technical requirement of the product to be thicker, and therefore the flange face can have enough strength to resist internal pressure, deformation and leakage of the shell cannot be caused by the internal pressure, and meanwhile the material thickness of the rest part of the shell is required.
In the conventional deep drawing process, materials are enabled to flow to the flange surface, the flange surface is piled up and thickened, the flange surface is thickened to 15% -20% of the thickness of raw materials, for example, after the material with the thickness of 1mm is drawn and molded, the thickness of the flange surface is changed to about 1.15-1.2 mm, if the thickness of the flange surface is required to be increased, the thickness of the raw materials is required to be increased, the weight and the material cost of a product are increased, and meanwhile, the wall thickness requirements of the rest products except the flange surface cannot be guaranteed.
Disclosure of Invention
The invention aims to: the invention provides a directional flow stretching method of a shell product material, which can ensure that the thickness of a flange surface reaches a specified thickness without increasing the thickness of a raw material, and the rest surfaces can meet the product requirement.
The technical scheme is as follows: a method for directional flow stretching of a housing product material, comprising the steps of:
S1: stretching the round flat plate piece into an opening type cylinder with a conical surface at the upper end;
S2: the cylinder is continuously stretched to reduce the diameter, the height and the wall thickness of the cylinder, and a part of flange surface is formed at the opening of the cylinder;
s3: thinning and stretching the side wall of the cylinder to enable the material of the side wall of the cylinder to directionally flow to the flange surface;
s4: and (3) shaping the R angle between the flange surface and the side wall of the cylinder, and enabling the thickness of the flange surface to be uniform through shaping and strong pressure.
Further, after step S2 is completed and before step S3 is started, the method further comprises the following steps:
s2.1: stretching the middle part of the upper end surface of the cylinder into the cylinder to form a groove;
S2.2: stretching the middle part of the groove outwards to form a head part;
S2.3: the head is roughly shaped.
Further, after step S4 is completed, the method further includes the following steps:
s4.1: cutting the flange surface into a specified shape;
S4.2: secondarily shaping the flange surface;
s4.3: punching holes on the flange surface;
s4.4: chamfering and deburring the flange surface.
Further, in step S1, the gap between the drawing die and the drawing punch of the drawing circular plate member is 1.1 times the thickness of the circular plate member, the opening R angles of the drawing punch and the drawing die are both R12, and the drawing coefficient of the circular plate member is 0.56.
Further, in step S2, when the cylinder continues to be stretched, the side wall of the cylinder is stretched to be a side wall which gradually thickens from top to bottom.
Further, in the step S2, the thinning amount of the side wall of the cylinder is 10% -20%.
Further, in step S1, the thickness of the circular plate member is 1.8mm.
Further, in step S3, the thinning amount of the side wall of the cylinder is 9% -11%.
Further, in step S3, the gap between the stretching female die and the stretching male die stretching the side wall of the cylinder is 1.5mm.
The beneficial effects are that: the invention has the advantages that the directional flow of the materials is realized through four steps under the condition of not increasing the thickness of the raw materials, the purpose of thickening the flange surface is achieved, the rest surfaces of the product can also meet the product requirement, the material of the flange surface is thickened, the integral strength of the shell can be improved, the service life of the product is prolonged, the thickness of the flange surface is increased under the premise of not increasing the thickness of the raw materials, and the purpose of saving the manufacturing cost is achieved.
Drawings
FIG. 1 is a flow chart of a directional flow stretching process.
Detailed Description
The invention is further elucidated below in connection with the drawings and the specific embodiments.
A method for directional flow stretching of a housing product material, as shown in fig. 1, comprises the following steps.
S1: the circular plate piece is stretched into an opening type cylinder with a conical surface at the upper end, namely, the circular plate piece is made of a circular material, a cylinder with the conical surface at the upper end is formed on a machine tool through a die, particularly a stretching male die and a stretching female die, the upper end refers to the bottom of the cylinder, the step is preliminary stretching, and the conical surface at the upper end is prepared for the second step of stretching.
S2: the cylinder is continuously stretched to reduce the diameter, the height and the wall thickness, wherein the wall thickness reduction is specifically realized by arranging a stretching male die and a stretching female die, controlling the gap between the stretching male die and the stretching female die, controlling the thickness reduction of the side wall in the stretching process, controlling the thickness reduction of the side wall as much as possible within a certain range, namely, reducing the thickness as little as possible, forming a part of flange surface at the opening of the cylinder, and stretching again, wherein the aim is to reduce the diameter and the height of the cylinder in the step S1, simultaneously form the flange surface at the opening of the cylinder, namely, the lower end of the cylinder, and determining the flow of the material under the influence of the stretching male die and the stretching female die during stretching.
S3: the method comprises the steps of thinning and stretching the side wall of a cylinder to enable side wall materials to directionally flow to a flange surface, wherein the step is a core process, and the step is to directionally flow the materials of the side wall of the cylinder to the flange surface through one-time thinning and stretching, so that the purpose of thickening the flange surface is achieved under the condition of ensuring the thickness of the side wall.
S4: r angle between the flange surface of the cylinder and the side wall of the cylinder is shaped, the thickness of the flange surface is uniform through shaping and pressing, and the flange surface meets the product requirement through shaping the joint of the flange surface and the side wall of the cylinder.
The complete stretching method of the whole shell product further comprises the following three steps of stretching after the step S2 is completed and before the step S3 is started:
s2.1: stretching the middle part of the upper end surface of the cylinder into the cylinder to form a shell product groove;
s2.2: stretching the middle part of the groove of the shell product outwards to form the head part of the shell product, wherein the two steps are the requirements on the shape of the upper end face of the shell product;
s2.3: and (3) performing rough shaping on the head of the shell product to enable the upper end surface of the shell product to meet the final drawing requirement.
The complete stretching method of the whole shell product further comprises the following steps of after the step S4 is completed:
s4.1: cutting the flange surface into a specified shape;
S4.2: secondarily shaping the flange surface;
s4.3: punching holes on the flange surface;
s4.4: chamfering and deburring the flange surface.
In step S1, the gap between the stretching die and the stretching punch of the stretching circular plate is 1.1 times the thickness of the circular plate, the mouth R angles of the stretching punch and the stretching die are both R12, the mouth R angle refers to the transition angle between the side wall of the cylinder and the flange surface, the stretching coefficient of the circular plate is 0.56, the stretching coefficient refers to the capability of the material to be correspondingly crossed in length, area or volume under the action of external force, and the stretching coefficient is a physical quantity for measuring the degree of cross shape of the material in the stretching process, and is generally used for describing the elastic property of the material, and the larger the stretching coefficient is, the larger the body length or cross shape degree of the material after being stressed is. The drawing coefficient can be expressed by numbers or symbols, the thickness of the round plate is 1.8mm, the drawing forming of the raw material with the thickness of 1.8mm is most economical and applicable, and the minimum wall thickness of 1.45 on the side surface of the product and the minimum thickness requirement of 2.1 on the flange surface can be ensured.
In the step S2, when the cylinder continues to be stretched, the side wall of the cylinder is stretched to be a side wall which is gradually thickened from top to bottom, namely, the opening part from the upper end to the lower end of the side wall of the cylinder is thicker, and in the stretching in the step, the thinning amount of the side wall of the cylinder is 10% -20%, namely, when the thickness of the circular plate piece is 1.8mm, the side wall of the cylinder is thinned to be 1.44mm at most.
In order to control the requirements of the thickness of the side wall of the cylinder and the quality of the product, the stretching in the step S1 and the step S2 is to control the thinning amount, not too much thinning and preparation is made for the stretching in the step S3, the thinning amount of the side wall is 9% -11% in the step S3, and in order to enable the product to finally meet the requirements, the gap between the stretching female die and the stretching male die for stretching the side wall of the cylinder in the step S3 is 1.5mm.
The stretching method can realize the directional flow of the material through innovation of a stretching process on the basis of not increasing the thickness of the raw material, achieves the aim of thickening the flange surface, improves the integral strength of the shell, prolongs the service life of the product, mainly keeps the wall thickness thinning degree of the product through the two stretching molding steps S1 and S2, realizes the uniform flow of the side wall material to the flange surface through one-time thinning stretching, and achieves the thickening effect, and the core points are that: firstly, the wall thickness change of the material is controlled in the first two steps, secondly, the stretching head is required to form a conical surface so as to facilitate the material flow, thirdly, the thinning stretching amount is controlled to be about 10%, the thickness of the side wall of the product can be ensured to be about 1.50mm in the four steps, and the thickness of the flange surface is ensured to be between 2.22mm and 2.25 mm.
Claims (3)
1. A method for directional flow stretching of a housing product material, comprising the steps of:
S1: stretching the round flat plate piece into an opening type cylinder with a conical surface at the upper end;
the thickness of the circular plate piece is 1.8mm; the gap between the stretching female die and the stretching male die of the stretching circular plate piece is 1.1 times of the thickness of the circular plate piece, the R angles of the opening parts of the stretching male die and the stretching female die are R12, and the stretching coefficient of the circular plate piece is 0.56;
s2: continuously stretching the cylinder to reduce the diameter, height and wall thickness of the cylinder, stretching the side wall of the cylinder to be a side wall which is gradually thickened from top to bottom, and forming a part of flange surface at the opening of the cylinder;
the thinning amount of the side wall of the cylinder is 10% -20%;
s3: thinning and stretching the side wall of the cylinder to enable the material of the side wall of the cylinder to directionally flow to the flange surface;
the gap between the stretching female die and the stretching male die for stretching the side wall of the cylinder is 1.5mm, and the thinning amount of the side wall of the cylinder is 9% -11%;
s4: and (3) shaping the R angle between the flange surface and the side wall of the cylinder, and enabling the thickness of the flange surface to be uniform through shaping and strong pressure.
2. A method of directional flow stretching of a casing product material according to claim 1, further comprising the steps of, after step S2 is completed and before step S3 is initiated:
s2.1: stretching the middle part of the upper end surface of the cylinder into the cylinder to form a groove;
S2.2: stretching the middle part of the groove outwards to form a head part;
S2.3: the head is roughly shaped.
3. The method of directional flow stretching of a casing product material according to claim 1, further comprising the steps of, after step S4 is completed:
s4.1: cutting the flange surface into a specified shape;
S4.2: secondarily shaping the flange surface;
s4.3: punching holes on the flange surface;
s4.4: chamfering and deburring the flange surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775961.5A CN117753860B (en) | 2023-12-21 | 2023-12-21 | Directional flow stretching method for shell product material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775961.5A CN117753860B (en) | 2023-12-21 | 2023-12-21 | Directional flow stretching method for shell product material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117753860A CN117753860A (en) | 2024-03-26 |
| CN117753860B true CN117753860B (en) | 2024-08-13 |
Family
ID=90317712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311775961.5A Active CN117753860B (en) | 2023-12-21 | 2023-12-21 | Directional flow stretching method for shell product material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117753860B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274585A (en) * | 2023-05-17 | 2023-06-23 | 镇江先锋汽车零部件有限公司 | Manufacturing method of special-shaped shell with sealing surface |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH315659A (en) * | 1953-06-24 | 1956-08-31 | Kellver Ag | Process and equipment for the production of seamless hollow bodies open on one side |
| DE2231000A1 (en) * | 1972-06-24 | 1974-01-10 | Metallwerk Oeventrop Gmbh | Vacuum-tight flanged containers - by rolling and stretch-forming a metal disc round a mandrel |
| SU1722656A1 (en) * | 1989-10-30 | 1992-03-30 | Краматорский Индустриальный Институт | Method of making hollow articles |
| RU2217256C2 (en) * | 2001-11-13 | 2003-11-27 | Кондратенко Владимир Григорьевич | Method for making cylindrical articles with bottom from square blank and apparatus for performing the same |
| EP1720671A1 (en) * | 2004-01-28 | 2006-11-15 | Glud & Marstrand A/S | A method of forming a metal sheet blank |
| DE102011118862B4 (en) * | 2011-11-18 | 2013-08-01 | Tenneco Gmbh | Modular flange |
| ES2532217T3 (en) * | 2012-04-20 | 2015-03-25 | Leifeld Metal Spinning Ag | Procedure and device for shaping a work piece |
| CN103111521B (en) * | 2013-02-06 | 2014-11-05 | 宁波五谷金属制品有限公司 | Drawing die of rectangular container and drawing method |
| CN109604472B (en) * | 2018-12-09 | 2020-12-01 | 中国航发南方工业有限公司 | Sleeve forming method |
| CN112828117B (en) * | 2021-02-04 | 2023-01-20 | 洛阳秦汉精工股份有限公司 | Cold forging forming process and forming die for thin-wall deep-hole flanged part |
| DE102021002777A1 (en) * | 2021-05-28 | 2022-12-01 | ALLGAlER WERKE GmbH | Process and device for use in the manufacture of deep-drawn sheet metal parts |
| CN217831451U (en) * | 2022-06-22 | 2022-11-18 | 广州东昇机械有限公司 | Novel directional drawing forming device |
| CN116237425A (en) * | 2023-04-07 | 2023-06-09 | 天津津荣天宇精密机械股份有限公司 | Forming method of cylindrical frame-shaped part |
| CN116871429A (en) * | 2023-07-25 | 2023-10-13 | 南通福乐达汽车配件有限公司 | Forming process of automobile crank pulley with unequal wall thickness |
-
2023
- 2023-12-21 CN CN202311775961.5A patent/CN117753860B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274585A (en) * | 2023-05-17 | 2023-06-23 | 镇江先锋汽车零部件有限公司 | Manufacturing method of special-shaped shell with sealing surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117753860A (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021139385A1 (en) | Compression molding device for molded product, and molding method therefor | |
| CA2707083A1 (en) | Tool for forming construct | |
| CN201346597Y (en) | Tool for manufacturing curved pin shaft | |
| CN116274585B (en) | Manufacturing method of special-shaped shell with sealing surface | |
| CN117753860B (en) | Directional flow stretching method for shell product material | |
| CN211618628U (en) | Plant fiber molding cup cover with inner convex ring | |
| JP2008130429A (en) | Battery can and its manufacturing method | |
| CN105834271B (en) | The technique that the constant bull nose of deep drawn bottom of a cup filleted corner reduces | |
| US20230286031A1 (en) | A pressing die for an uncurled shell of a pressure-resistant easy open end | |
| CN218425418U (en) | Cold heading mechanism for cold heading large pan head oil groove bolt | |
| CN212884479U (en) | Stretching die for clutch belt pulley core | |
| CN216803288U (en) | Constant pressure shaft installation mould | |
| CN208067150U (en) | A kind of high and middle pressure valve valve body disposal molding mold | |
| CN222004408U (en) | Novel waterproof sealing ring for die and motor | |
| CN208263254U (en) | A kind of mold for suppressing drum seal gasket | |
| CN219851686U (en) | Improved nozzle die sleeve | |
| CN222004144U (en) | Rubber-coated underwater acoustic transducer low-pressure vulcanization mold | |
| CN221736518U (en) | Eagle claw anti-drop ceramic tile back line mould | |
| CN111469385A (en) | Plastic suction mold for automobile foot pad and plastic suction method based on plastic suction mold | |
| CN2659584Y (en) | Screw fixing face seamless mould for clutch cap | |
| CN206316238U (en) | A kind of bite type mould | |
| CN221161562U (en) | Combined compression molding tool for low-porosity composite material part | |
| CN212331563U (en) | Mould of diaphragm that super large ultra-thin flange rib is sealed | |
| CN201520026U (en) | Universal die | |
| CN220095290U (en) | Pressure injection type T-shaped ring die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |