CN105057631A - Aluminum alloy pressure casting mechanical arm with gradient net-shaped structure and manufacturing method of aluminum alloy pressure casting mechanical arm - Google Patents
Aluminum alloy pressure casting mechanical arm with gradient net-shaped structure and manufacturing method of aluminum alloy pressure casting mechanical arm Download PDFInfo
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- CN105057631A CN105057631A CN201510490649.0A CN201510490649A CN105057631A CN 105057631 A CN105057631 A CN 105057631A CN 201510490649 A CN201510490649 A CN 201510490649A CN 105057631 A CN105057631 A CN 105057631A
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- 238000005266 casting Methods 0.000 title claims abstract description 36
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000004512 die casting Methods 0.000 claims description 44
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- KHMVXSQLPUNRCF-UHFFFAOYSA-N DL-Adalin Natural products C1CCC2CC(=O)CC1(CCCCC)N2 KHMVXSQLPUNRCF-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 238000013016 damping Methods 0.000 abstract description 3
- 229920002521 macromolecule Polymers 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses an aluminum alloy pressure casting mechanical arm with a gradient net-shaped structure and a manufacturing method of the aluminum alloy pressure casting mechanical arm. A mechanical arm body is formed by combining an upper shell and a lower shell in a covering manner. The upper shell and the lower shell are each provided with a gradient mesh structure. The preparing process of the mechanical arm comprises the step of mechanical arm stress analysis, the step of mechanical arm strength correction, the step of mechanical arm pressure casting and the step of mechanical arm demolding. The weight of an aluminum alloy pressure casting can be greatly reduced while the strength of the mechanical arm is guaranteed, product materials are greatly saved, and the production cost of products is reduced. Meanwhile, by means of the gradient net-shaped structure, the problems that the size of the mechanical arm is greatly reduced in the pressure casting process, cooling is not even, and consequently hole shrinking is caused are solved. Under the premise that the needed strength of the mechanical arm is guaranteed, the weight of the mechanical arm body is reduced, and the maneuvering characteristic of the mechanical arm is improved. According to the aluminum alloy pressure casting mechanical arm, the casting technical means is simple and convenient to implement; and in addition, to further solve the problems of noise and vibration of the mechanical arm, macromolecule sound absorbing and damping materials can be added in empty positions of the mechanical arm.
Description
Technical field
The present invention relates to mechanical arm extrusion process, particularly relate to one and there is the cancellated aluminium alloy compression casting mechanical arm of gradient and manufacture method thereof.
Background technology
In recent years, because the demand of the production automation increases gradually, and the continuous rising of China's labor cost, industrial robot is applied in the industry-by-industries such as such as automobile, household electrical appliances, boats and ships, machinery more and more.Mechanical arm, as important composition parts of industrial robot, also account for most of whole industrial robot weight.Because pack alloy has many outstanding performances such as density is little, intensity is high, in the middle of the manufacture being thus widely used in mechanical arm.But current mechanical arm is not mostly through structure hole optimal design, cause the waste of material that mechanical arm mechanical property is superfluous and unnecessary.Aluminium alloy cubical contraction when solidifying is comparatively large in addition, and easily causes inhomogeneous cooling even when mechanical arm volume is larger, surrounding be the very fast and center cooling of position cooling comparatively slowly, easily cause the defects such as shrinkage cavity, affect the performance of mechanical arm.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming above-mentioned prior art, provide one to have the cancellated aluminium alloy compression casting mechanical arm of gradient and manufacture method thereof.While ensureing aluminium alloy compression casting mechanical arm intensity, reduce the weight of mechanical arm as far as possible, save product materials; The comparatively large and even problem causing the defects such as shrinkage cavity of inhomogeneous cooling of reduce engine mechanical arm volume contraction in press casting procedure, improves the performance of mechanical arm.
The present invention is achieved through the following technical solutions:
One has the cancellated aluminium alloy compression casting mechanical arm of gradient, comprise mechanical arm body, two ends of described mechanical arm body are provided with reducing gear and install station 3, and described mechanical arm body is covered by upper casing 1 and lower casing 2 and forms, and described upper casing 1 and lower casing 2 all offer gradient mesh-structured.
Described gradient is mesh-structured to be made up of the mesh of multiple array distribution on upper casing 1 and lower casing 2.
Described mesh is divided into mesopore 1-1, side mesopore 1-2 and side opening 1-3 successively according to pore size; Described mesopore 1-1 lays respectively at the middle part of upper casing 1 and lower casing 2, and the both sides of mesopore 1-1 are followed successively by side mesopore 1-2 and side opening 1-3.
The junction of described mesopore 1-1 and side opening 1-3 is provided with reinforcement 4; The connection of described reinforcement 4 and upper casing 1 and lower casing 2 adopts welds or one-body molded.
The quantity of side opening 1-3 is greater than the quantity of side mesopore 1-2, and the quantity of side mesopore 1-2 is greater than the quantity of mesopore 1-1.
Described mesopore 1-1, side mesopore 1-2 and side opening 1-3 are all arranged in order along the axial direction of upper casing 1 and lower casing 2.
The shape of described mesh is circle, rectangle, round rectangle, regular polygon or notch shape.
The manufacture method of above-mentioned aluminium alloy compression casting mechanical arm is as follows:
(1) the force analysis step of mechanical arm;
(2) mechanical arm strength check step;
(3) mechanical arm die casting step;
(4) mechanical arm demoulding step.
The force analysis step of described step (1) mechanical arm is mechanical arm under the condition of work of limiting condition and maximum load, the limit stress data calculated;
Described step (2) mechanical arm strength check step, after drawing mechanical arm stress data according to the analysis of step (1) mechanical arm force analysis step, adopt finite element method again, make the shape of the arrangement position of each mesh on upper casing 1 and lower casing 2 of gradient mesh-structured 1, spacing and mesh, with adaline mechanical arm requirement of strength;
Described step (3) mechanical arm die casting step, is divided into upper casing 1 die casting step and lower casing 2 die casting step;
Described upper casing 1 die casting step, be in die casting except the structure needed for forming machine arm body, the arrangement position of each mesh on upper casing 1 also needing to draw according to step (2), spacing, aperture and mesh form, with it corresponding core array is set in die casting, i.e. the arrangement position of each core, spacing, diameter and shape; Then the aluminium alloy of melting is watered in die casting, treat its shaping, cooling;
The die casting step of described lower casing 2 is identical with the die casting step of upper casing 1;
Described step (4) mechanical arm demoulding step, after die casting cooling, each core is extracted out from die casting, namely upper casing 1 and the lower casing 2 of mechanical arm required form structure is completed, then rear operation process, assembling are carried out to the upper casing 1 after the demoulding and lower casing 2, obtain that there is the cancellated aluminium alloy compression casting mechanical arm of gradient.
Described die casting is vacuum die-casting mould; Described core is the column core with pattern draft.
The present invention, relative to prior art, has following advantage and effect:
Mesh-structured with gradient on aluminium alloy compression casting mechanical arm of the present invention, while ensureing its intensity, greatly can reduce the weight of aluminum alloy die casting, significantly save product materials, reduce production cost; And the inhomogeneous cooling even problem that cause the defects such as shrinkage cavity comparatively large by gradient network structure reduce engine mechanical arm volume contraction in press casting procedure simultaneously, under the prerequisite ensureing mechanical arm desirable strength, alleviate the weight of mechanical arm body, improve the mobility of mechanical arm;
The Casting Technology means of aluminium alloy compression casting mechanical arm of the present invention are easy, in addition, in order to improve noise and the vibration problems of mechanical arm further, can add macromolecule sound-absorbing damping material in vacant position therein.
Accompanying drawing explanation
Fig. 1 is the upper case structure schematic diagram of aluminium alloy compression casting mechanical arm of the present invention.
Fig. 2 is the lower casing structural representation of aluminium alloy compression casting mechanical arm of the present invention.
Fig. 3 is the die casting step schematic diagram of aluminium alloy compression casting mechanical arm of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figures 1 to 3.One of the present invention has the cancellated aluminium alloy compression casting mechanical arm of gradient, comprise mechanical arm body, two ends of described mechanical arm body are provided with reducing gear and install station 3, described mechanical arm body is covered by upper casing 1 and lower casing 2 and forms, and described upper casing 1 and lower casing 2 all offers gradient mesh-structured.
Described gradient is mesh-structured to be made up of several mesh of multiple array distribution on upper casing 1 and lower casing 2.The shape of this mesh is circle, rectangle, round rectangle, regular polygon or notch shape.When selecting circle or round rectangle structure, the gradient network structure on mechanical arm can be avoided to occur wedge angle thus reduce stress concentrating, improving the intensity of mechanical arm.
Described mesh is divided into mesopore 1-1, side mesopore 1-2 and side opening 1-3 successively according to pore size; Described mesopore 1-1 lays respectively at the middle part of upper casing 1 and lower casing 2, and the both sides of mesopore 1-1 are followed successively by side mesopore 1-2 and side opening 1-3.Above-mentioned distribution is according to mechanical arm stressed size cases change profile in gradient everywhere, namely, distribution more closely side mesopore 1-2 and side opening 1-3 less in the stressed larger part employing aperture of mechanical arm, adopts in the stressed less part of mechanical arm the mesopore 1-1 that aperture is comparatively large, distribution is more sparse.
The junction of described mesopore 1-1 and side opening 1-3 is provided with reinforcement 4; The connection of described reinforcement 4 and upper casing 1 and lower casing 2 adopts welds or one-body molded.Reinforcement 4 can further improve the intensity of mechanical arm.
The quantity of side opening 1-3 is greater than the quantity of side mesopore 1-2, and the quantity of side mesopore 1-2 is greater than the quantity of mesopore 1-1.
Described mesopore 1-1, side mesopore 1-2 and side opening 1-3 are all arranged in order along the axial direction of upper casing 1 and lower casing 2.
Mechanical arm can adopt the modes such as spraying, filling, bonding, and in the inside of mechanical arm, non-parts installation place adds macromolecule sound-absorbing damping material when post processing, to improve the problem such as noise and vibrations of mechanical arm.
The extrusion process that the present invention has gradient cancellated aluminium alloy compression casting mechanical arm realizes by following step:
(1) the force analysis step of mechanical arm; (2) mechanical arm strength check step; (3) mechanical arm die casting step; (4) mechanical arm demoulding step.
The force analysis step of described step (1) mechanical arm is mechanical arm under the condition of work of limiting condition and maximum load, the limit stress data calculated;
Described step (2) mechanical arm strength check step, after drawing mechanical arm stress data according to the analysis of step (1) mechanical arm force analysis step, adopt finite element analysis (ANSYS) method again, make the shape of the arrangement position of each mesh on upper casing 1 and lower casing 2 of gradient mesh-structured 1, spacing, aperture and mesh, with adaline mechanical arm requirement of strength;
Above-mentioned steps (3) mechanical arm die casting step, is divided into upper casing 1 die casting step and lower casing 2 die casting step; Described upper casing 1 die casting step, be in die casting except the structure needed for forming machine arm body, the arrangement position of each mesh on upper casing 1 also needing to draw according to step (2), spacing, aperture and mesh form, with it corresponding core array is set in die casting, i.e. the arrangement position of each core, spacing, diameter and shape; Then the aluminium alloy of melting is watered in die casting, treat its shaping, cooling;
The die casting step of described lower casing 2 is identical with the die casting step of upper casing 1;
Above-mentioned steps (4) mechanical arm demoulding step, after die casting cooling, each core is extracted out from die casting, namely upper casing 1 and the lower casing 2 of mechanical arm required form structure is completed, then rear operation process, assembling are carried out to the upper casing 1 after the demoulding and lower casing 2, obtain that there is the cancellated aluminium alloy compression casting mechanical arm of gradient.
Described die casting is vacuum die-casting mould; Described core is the column core with pattern draft.
As mentioned above, just the present invention can be realized preferably.In addition, can also be watered by above-mentioned steps and cast out symmetrical or asymmetrical upper and lower shell structure.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. one kind has the cancellated aluminium alloy compression casting mechanical arm of gradient, comprise mechanical arm body, two ends of described mechanical arm body are provided with reducing gear and install station (3), it is characterized in that: described mechanical arm body is covered by upper casing (1) and lower casing (2) and forms, described upper casing (1) and lower casing (2) all offer gradient mesh-structured.
2. aluminium alloy compression casting mechanical arm according to claim 1, is characterized in that: described gradient is mesh-structured to be made up of several mesh of multiple array distribution on upper casing (1) and lower casing (2).
3. aluminium alloy compression casting mechanical arm according to claim 2, is characterized in that: described mesh is divided into mesopore (1-1), side mesopore (1-2) and side opening (1-3) successively according to pore size; Described mesopore (1-1) lays respectively at the middle part of upper casing (1) and lower casing (2), and the both sides of mesopore (1-1) are followed successively by side mesopore (1-2) and side opening (1-3).
4. aluminium alloy compression casting mechanical arm according to claim 1, is characterized in that: the junction of described mesopore (1-1) and side opening (1-3) is provided with reinforcement (4); The connection of described reinforcement (4) and upper casing (1) and lower casing (2) adopts welds or one-body molded.
5. aluminium alloy compression casting mechanical arm according to claim 2, it is characterized in that: the quantity of side opening (1-3) is greater than the quantity of side mesopore (1-2), the quantity of side mesopore (1-2) is greater than the quantity of mesopore (1-1).
6. aluminium alloy compression casting mechanical arm according to claim 2, is characterized in that: described mesopore (1-1), side mesopore (1-2) and side opening (1-3) are all arranged in order along the axis direction of upper casing (1) and lower casing (2).
7. aluminium alloy compression casting mechanical arm according to any one of claim 2 to 6, is characterized in that: the shape of described mesh is circle, rectangle, round rectangle, regular polygon or notch shape.
8. the manufacture method of aluminium alloy compression casting mechanical arm according to any one of claim 1 to 7, is characterized in that comprising the steps:
(1) the force analysis step of mechanical arm;
(2) mechanical arm strength check step;
(3) mechanical arm die casting step;
(4) mechanical arm demoulding step.
9. manufacture method according to claim 8, is characterized in that: the force analysis step of described step (1) mechanical arm, is mechanical arm under the condition of work of limiting condition and maximum load, the limit stress data calculated;
Described step (2) mechanical arm strength check step, after drawing mechanical arm stress data according to the analysis of step (1) mechanical arm force analysis step, adopt finite element method again, make the shape of the arrangement position of each mesh on upper casing (1) and lower casing (2) of gradient mesh-structured 1, spacing, aperture and mesh, with adaline mechanical arm requirement of strength;
Described step (3) mechanical arm die casting step, is divided into upper casing (1) die casting step and lower casing (2) die casting step;
Described upper casing (1) die casting step, be in die casting except the structure needed for forming machine arm body, the arrangement position of each mesh on upper casing (1) also needing to draw according to step (2), spacing, aperture and mesh form, with it corresponding core array is set in die casting, i.e. the arrangement position of each core, spacing, diameter and shape; Then the aluminium alloy of melting is watered in die casting, treat its shaping, cooling;
The die casting step of described lower casing (2) is identical with the die casting step of upper casing (1);
Described step (4) mechanical arm demoulding step, after die casting cooling, each core is extracted out from die casting, namely upper casing (1) and the lower casing (2) of mechanical arm required form structure is completed, then rear operation process, assembling are carried out to the upper casing (1) after the demoulding and lower casing (2), obtain that there is the cancellated aluminium alloy compression casting mechanical arm of gradient.
10. manufacture method according to claim 9, is characterized in that: described die casting is vacuum die-casting mould; Described core is the column core with pattern draft.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239557A (en) * | 2016-09-09 | 2016-12-21 | 湖北骐通智能科技股份有限公司 | Robot's arm and robot |
| JPWO2020031289A1 (en) * | 2018-08-08 | 2021-06-03 | 株式会社安川電機 | robot |
| CN116037886A (en) * | 2022-10-28 | 2023-05-02 | 深圳市大族机器人有限公司 | Manufacturing method of upper mechanical arm main body and upper mechanical arm |
| US11707851B2 (en) * | 2019-08-28 | 2023-07-25 | Fanuc Corporation | Arm-shaped structure body and robot |
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| CN205056990U (en) * | 2015-08-11 | 2016-03-02 | 华南理工大学 | Aluminum alloy die -Casting arm with gradient network structure |
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2015
- 2015-08-11 CN CN201510490649.0A patent/CN105057631B/en active Active
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| US4457635A (en) * | 1981-06-10 | 1984-07-03 | Hitachi, Ltd. | Printer arm |
| JPH1128920A (en) * | 1997-07-14 | 1999-02-02 | Tokai Rubber Ind Ltd | Suspension arm |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106239557A (en) * | 2016-09-09 | 2016-12-21 | 湖北骐通智能科技股份有限公司 | Robot's arm and robot |
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| US11707851B2 (en) * | 2019-08-28 | 2023-07-25 | Fanuc Corporation | Arm-shaped structure body and robot |
| CN116037886A (en) * | 2022-10-28 | 2023-05-02 | 深圳市大族机器人有限公司 | Manufacturing method of upper mechanical arm main body and upper mechanical arm |
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| CN105057631B (en) | 2017-08-25 |
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Effective date of registration: 20190109 Address after: 510031 Room 10, 20th Floor, Dongzhao Building, 515 Dongfeng Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: GUANGDONG ZHONGSHENG HUAKONG INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: South China University of Technology |
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Address after: Building A, 5th Floor, Building 1, Boda Science and Technology Innovation Park, No. 4 Chuangxing Avenue, High tech Industrial Development Zone, Qingyuan City, Guangdong Province, 511520 Patentee after: GUANGDONG ZHONGSHENG HUAKONG INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 510031 Room 10, 20th Floor, Dongzhao Building, 515 Dongfeng Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG ZHONGSHENG HUAKONG INTELLIGENT TECHNOLOGY Co.,Ltd. |