CN108515311B - Light-weight long-handle three-column groove shell and processing method thereof - Google Patents
Light-weight long-handle three-column groove shell and processing method thereof Download PDFInfo
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- CN108515311B CN108515311B CN201710848569.7A CN201710848569A CN108515311B CN 108515311 B CN108515311 B CN 108515311B CN 201710848569 A CN201710848569 A CN 201710848569A CN 108515311 B CN108515311 B CN 108515311B
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- 238000003672 processing method Methods 0.000 title abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 34
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000009191 jumping Effects 0.000 abstract description 5
- 238000005242 forging Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
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Abstract
The invention relates to the technical field of three-column tank shell processing, in particular to a light-weight long-handle three-column tank shell and a processing method thereof. The long-handle three-column tank shell is light in weight, is attached to the trend of light weight of the whole vehicle, has good NVH performance, reduces the processing cost of the long-handle three-column tank shell, and has small jumping and small machining allowance after welding.
Description
Technical Field
The invention belongs to the technical field of groove shell processing, and particularly relates to a light-weight long-handle three-column groove shell and a processing method thereof.
Background
The existing long-handle three-column tank shell is formed by integrally and precisely forging a blank, and then the finished product size is obtained by turning, as shown in fig. 3, that is, a workpiece blank close to the shape of a part is firstly manufactured, and then the finished long-handle three-column tank shell 1 is manufactured by a small amount of turning. However, the long-handle three-column groove shell formed by finish forging is of a solid structure, the product weight is large, the whole vehicle is not light, the fuel economy of the whole vehicle is low, the processing cost of the same workpiece blank is high, the development period is long, the processing cost of the long-handle three-column groove shell is improved, the rear rod part in the finish forging process is large in jumping, the vehicle processing allowance is large, and the metal streamline of a part is easy to damage.
Disclosure of Invention
Aiming at the problem that the existing long-handle three-column tank shell is heavy and not beneficial to the light weight of the whole vehicle, the invention aims to provide the light-weight long-handle three-column tank shell which is formed by welding a front shell head section, a hollow pipe section and a rear shell section, so that the long-handle three-column tank shell forms a closed column tank cavity, the weight of a product is reduced, the trend of light weight of the whole vehicle is met, the NVH performance is good, the processing cost of the long-handle three-column tank shell is reduced, the welded long-handle three-column tank shell has small jumping and small vehicle processing allowance.
The invention also aims to provide a processing method of the light-weight long-handle three-column groove shell.
The invention provides the following technical scheme:
a light-weight long-handle three-column tank shell is characterized in that a front shell head section, a hollow pipe section and a rear shell section are sequentially arranged from front to back, a closed column tank cavity is arranged in the long-handle three-column tank shell, one end of the hollow pipe section is connected with the rear end of the front shell head section, the other end of the hollow pipe section is connected with the front end of the rear shell section, a rear end concave cavity is formed in the end face of the rear end of the front shell head section, a front end concave cavity is formed in the end face of the front end of the rear shell section, and the column tank cavity is formed by connecting the rear end concave cavity, the interior of the hollow pipe section and the front end concave cavity;
the outer side surface of the rear end of the front shell head section is provided with an annular rear end step, the outer side surface of the front end of the rear shell section is provided with an annular front end step, and the outer circumferential surfaces of the rear end step and the front end step are respectively attached to the inner side surfaces of two ends of the hollow pipe section;
the front end step and the rear end step are respectively in a frustum shape, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside so that conical counterbores matched with the front end step and the rear end step are respectively formed at the end openings of the two ends of the hollow pipe section;
the front end step is provided with a step surface which is far away from the front end surface of the rear shell section and is vertical to the axis of the rear shell section, and the rear end step is provided with a step surface which is far away from the rear end surface of the front shell head section and is vertical to the axis of the front shell head section;
the end surfaces of the two ends of the hollow pipe section are respectively abutted with the step surfaces of the rear end step and the front end step. The long-handle three-column groove shell comprises a front shell head section, a hollow pipe section and a rear shell section, wherein a rear end concave cavity of the front shell head section, an inner space of the hollow pipe section and a front end concave cavity of the rear shell section are sequentially connected to form a sealed column groove concave cavity in the long-handle three-column groove shell, so that the weight of the long-handle three-column groove shell is reduced, the light weight of the long-handle three-column groove shell is realized, the NVH performance of the long-handle three-column groove shell is improved, the long-handle three-column groove shell is prevented from being integrally formed by a precision forging blank, the processing cost of the long-handle three-column groove shell is reduced, and the jumping quantity of the long-handle three-column groove shell is reduced.
As an improvement of the method of the invention, the outer side surface of the rear end of the front shell head section is provided with an annular rear end step, the outer side surface of the front end of the rear shell section is provided with an annular front end step, and the outer circumferential surfaces of the rear end step and the front end step are respectively attached to the inner side surfaces of two ends of the hollow pipe section. The connection flatness and the connection strength among the three parts are improved.
As an improvement of the method, the front-end step and the rear-end step are respectively in a frustum shape, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside to respectively form tapered counterbores matched with the front-end step and the rear-end step. The matching of the frustum-shaped front end step and the frustum-shaped rear end step with the taper counterbores at the two ends of the hollow pipe section is tighter, and the three parts are prevented from rotating relatively.
As an improvement of the method of the invention, two ends of the hollow pipe section are connected with the rear end of the front shell head section and the front section of the rear shell section through laser welding. The required depth of fusion is ensured, and the connection strength between all parts of the long-handle three-column groove shell is enhanced.
As an improvement of the method, the laser welding power of the hollow pipe section and the front shell head section is 4100-4300W, the laser welding power of the hollow pipe section and the rear shell section is 3900-4100W, the rotating speed of the laser welding is 2100mm/s, and the focal length is-8 mm. Through proper welding power, rotating speed and focal length, the proper fusion depth is ensured to be obtained, the strength of the long-handle three-column groove shell is improved, and the outer surface of the long-handle three-column groove shell is smooth and flat.
A processing method of a light-weight long-handle three-column groove shell comprises the following steps:
(1) the feeding mechanism sequentially sends the front shell head section, the hollow pipe section and the rear shell section to a press-fitting station for clamping;
(2) the servo motor driving pressure head respectively presses the front shell head section and the rear shell section into the hollow pipe section, so that the two ends of the hollow pipe section are respectively sleeved with the rear end of the front shell head section and the front end of the rear shell section;
(3) the heating inductor respectively heats the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section;
(4) after heating, welding the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section by laser;
(5) after laser welding, machining the long-handle three-column groove shell to obtain a light-weight long-handle three-column groove shell;
the outer circumferential surfaces of the rear end step and the front end step in the step (2) are respectively attached to the inner side surfaces of two ends of the hollow pipe section;
the front end step and the rear section step are respectively in frustum shapes, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside to respectively form tapered counterbores matched with the front end step and the rear section step;
the front end step is provided with a step surface which is far away from the front end surface of the rear shell section and is vertical to the axis of the rear shell section, and the rear end step is provided with a step surface which is far away from the rear end surface of the front shell head section and is vertical to the axis of the front shell head section;
the end surfaces of the two ends of the hollow pipe section are respectively abutted with the step surfaces of the rear end step and the front end step.
As an improvement of the method, the outer side surface of the rear end of the front shell head section is provided with an annular rear end step, the outer side surface of the front end of the rear shell section is provided with an annular front end step, and the outer circumferential surfaces of the rear end step and the front end step in the step (2) are respectively attached to the inner side surfaces of two ends of the hollow pipe section. The connection flatness and the connection strength among the three parts are improved.
As an improvement of the method, the front-end step and the rear-end step are respectively in a frustum shape, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside so that tapered counterbores matched with the front-end step and the rear-end step are respectively formed at the end openings of the two ends of the hollow pipe section. The frustum-shaped front end step and the frustum-shaped rear end step are matched with the tapered counterbores at the two ends of the hollow pipe section more closely, so that relative rotation in press fitting and welding is prevented.
As an improvement of the method, the welding power of the hollow pipe section and the front shell head section is 4100-4300W, the welding power of the hollow pipe section and the rear shell section is 3900-4100W, the rotating speed is 2100mm/s, and the focal length is-8 mm. The front shell head section and the rear shell section have different welding powers so as to ensure proper penetration amount.
The invention has the following beneficial effects:
the long-handle three-column tank shell is formed by laser welding the front shell head section, the hollow pipe section and the rear shell section, so that a closed column tank cavity is formed in the long-handle three-column tank shell, the weight of a product is reduced, the trend of light weight of the whole vehicle is met, the NVH performance is good, the processing cost of the long-handle three-column tank shell is reduced, the welded long-handle three-column tank shell has small jumping and small vehicle processing allowance.
Drawings
Fig. 1 is a structural view of a long handled three-column tank shell of the present invention.
Fig. 2 is an exploded view of the longshank three-column tank shell of the present invention.
Fig. 3 is a structural view of a conventional long-handled three-column slotted shell formed by precision forging.
In the figure: 1. the long-handle three-column groove shell comprises a long-handle three-column groove shell, 2, a front shell head section, 20, a rear end concave cavity, 21, a rear end step, 3, a hollow pipe section, 31, a tapered hole expanding, 4, a rear shell section, 40, a front end concave cavity, 41, a front end step, 5 and a column groove concave cavity.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings 1-2.
As shown in figure 1, a light-weight long-handle three-column groove shell 1 is sequentially provided with a front shell head section 2, a hollow pipe section 3 and a rear shell section 4 from front to back, a closed column groove cavity 5 is arranged in the long-handle three-column groove shell, one end of the hollow pipe section is connected with the rear end of the front shell head section, the other end of the hollow pipe section is connected with the front end of the rear shell section, preferably, the two ends of the hollow pipe section are connected with the rear end of the front shell head section and the front section of the rear shell section through laser welding, the laser welding power of the hollow pipe section and the front shell head section is 4100-4300W, preferably 4200W, the laser welding power of the hollow pipe section and the rear shell section is 3900-4100W, preferably 4000W, the rotating speed of the laser welding is 2100mm/s, and the focal distance is. The end face of the rear end of the front shell head section is provided with a rear end concave cavity 20, the end face of the front end of the rear shell section is provided with a front end concave cavity 40, and the column groove cavity is formed by connecting the rear end concave cavity, the interior of the hollow tube section and the front end concave cavity. The outer side surface of the rear end of the front shell head section is provided with an annular rear end step 21, the outer side surface of the front end of the rear shell section is provided with an annular front end step 41, and the outer circumferential surfaces of the rear end step and the front end step are respectively attached to the inner side surfaces of two ends of the hollow pipe section. As shown in fig. 2, the front step and the rear step are frustum-shaped, the taper is 30 °, the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside, so that tapered counterbores 31 matched with the front step and the rear step are formed at the end openings of the two ends of the hollow pipe section.
Example 1
The processing method of the light-weight long-handle three-column groove shell comprises the following steps:
(1) the feeding mechanism sequentially sends the front shell head section, the hollow pipe section and the rear shell section to a press-fitting station for clamping;
(2) the servo motor driving pressure head presses the front shell head section and the rear shell section to the hollow tube section respectively, so that the two ends of the hollow tube section are respectively sleeved with the rear end of the front shell head section and the front end of the rear shell section, the outer circumferences of the rear end step of the front shell head section and the front end step of the rear shell section are respectively attached to the inner sides of the two ends of the hollow tube section, the front end step and the rear end step are respectively in a frustum shape, and the inner diameters of the two ends of the hollow tube section are gradually reduced from outside to inside and are distributed to form conical counterbores matched with the front end step and the rear end step;
(3) the heating inductor respectively heats the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section;
(4) after heating, welding the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section by laser, wherein the welding power of the hollow pipe section and the front shell head section is 4200W, the welding power of the hollow pipe section and the rear shell section is 4000W, the rotating speed is 2100mm/s, and the focal length is-8 mm;
(5) and (4) performing machining after laser welding to obtain the light long-handle three-column tank shell.
Example 2
The processing method of the light-weight long-handle three-column shell is different from the processing method of the embodiment 1 in that the welding power of the hollow pipe section and the front shell head section is 4100W, and the welding power of the hollow pipe section and the rear shell section is 3900W.
Example 3
The processing method of the light-weight long-handle three-column groove shell is different from the processing method of the embodiment 1 in that the welding power of the hollow pipe section and the front shell head section is 4300W, and the welding power of the hollow pipe section and the rear shell section is 4100W.
Claims (5)
1. A light-weight long-handle three-column tank shell is characterized in that the outer side surface of the rear end of the front shell head section is provided with an annular rear end step, the outer side surface of the front end of the rear shell section is provided with an annular front end step, and the outer circumferential surfaces of the rear end step and the front end step are respectively attached to the inner side surfaces of two ends of a hollow pipe section;
the front end step and the rear end step are respectively in a frustum shape, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside so that conical counterbores matched with the front end step and the rear end step are respectively formed at the end openings of the two ends of the hollow pipe section;
the front end step is provided with a step surface which is far away from the front end surface of the rear shell section and is vertical to the axis of the rear shell section, and the rear end step is provided with a step surface which is far away from the rear end surface of the front shell head section and is vertical to the axis of the front shell head section;
the end surfaces of the two ends of the hollow pipe section are respectively abutted with the step surfaces of the rear end step and the front end step.
2. The lightweight long handle three-column slotted shell according to claim 1, wherein both ends of the hollow tube section are connected to the rear end of the front shell head section and the front section of the rear shell section by laser welding.
3. The light-weight long-handle three-column slotted shell according to claim 2, wherein the laser welding power of the hollow pipe section and the front shell head section is 4100-4300W, the laser welding power of the hollow pipe section and the rear shell section is 3900-4100W, the rotating speed of the laser welding is 2100mm/s, and the focal length is-8 mm.
4. The method of claim 1 for processing a light weight long shank three post pot shell, comprising the steps of:
(1) the feeding mechanism sequentially sends the front shell head section, the hollow pipe section and the rear shell section to a press-fitting station for clamping;
(2) the servo motor driving pressure head respectively presses the front shell head section and the rear shell section into the hollow pipe section, so that the two ends of the hollow pipe section are respectively sleeved with the rear end of the front shell head section and the front end of the rear shell section;
(3) the heating inductor respectively heats the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section;
(4) after heating, welding the joint of the front shell head section and the hollow pipe section and the joint of the rear shell section and the hollow pipe section by laser;
(5) after laser welding, machining the long-handle three-column groove shell to obtain a light-weight long-handle three-column groove shell;
the outer circumferential surfaces of the rear end step and the front end step in the step (2) are respectively attached to the inner side surfaces of two ends of the hollow pipe section;
the front end step and the rear section step are respectively in frustum shapes, and the inner diameters of the two ends of the hollow pipe section are gradually reduced from outside to inside to respectively form tapered counterbores matched with the front end step and the rear section step;
the front end step is provided with a step surface which is far away from the front end surface of the rear shell section and is vertical to the axis of the rear shell section, and the rear end step is provided with a step surface which is far away from the rear end surface of the front shell head section and is vertical to the axis of the front shell head section;
the end surfaces of the two ends of the hollow pipe section are respectively abutted with the step surfaces of the rear end step and the front end step.
5. The method of claim 4, wherein the welding power of the hollow pipe section and the front shell head section is 4100-4300W, the welding power of the hollow pipe section and the rear shell section is 3900-4100W, the rotation speed is 2100mm/s, and the focal length is-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848569.7A CN108515311B (en) | 2017-09-19 | 2017-09-19 | Light-weight long-handle three-column groove shell and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848569.7A CN108515311B (en) | 2017-09-19 | 2017-09-19 | Light-weight long-handle three-column groove shell and processing method thereof |
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| Publication Number | Publication Date |
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| CN108515311A CN108515311A (en) | 2018-09-11 |
| CN108515311B true CN108515311B (en) | 2020-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115229453B (en) * | 2022-09-23 | 2022-12-06 | 万向钱潮股份公司 | Three-column groove shell processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011062040A1 (en) * | 2009-11-17 | 2011-05-26 | Ntn株式会社 | Power transmitting member |
| CN103917795A (en) * | 2011-11-08 | 2014-07-09 | Ntn株式会社 | Welding method for outer joint member of constant velocity universal joint, and outer joint member |
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2017
- 2017-09-19 CN CN201710848569.7A patent/CN108515311B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011062040A1 (en) * | 2009-11-17 | 2011-05-26 | Ntn株式会社 | Power transmitting member |
| CN103917795A (en) * | 2011-11-08 | 2014-07-09 | Ntn株式会社 | Welding method for outer joint member of constant velocity universal joint, and outer joint member |
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| CN108515311A (en) | 2018-09-11 |
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Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |