CN111590068A - Cam machining method - Google Patents
Cam machining method Download PDFInfo
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- CN111590068A CN111590068A CN202010406610.7A CN202010406610A CN111590068A CN 111590068 A CN111590068 A CN 111590068A CN 202010406610 A CN202010406610 A CN 202010406610A CN 111590068 A CN111590068 A CN 111590068A
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- Prior art keywords
- hole
- cam
- pressing sleeve
- central
- lower pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a method for processing a cam, which comprises the following steps of mixing materials; pressing a die-casting die, wherein the die-casting die comprises an upper pressing sleeve, a forming seat, a first lower pressing sleeve, a second lower pressing sleeve and a lower pressing rod; a forming through hole is vertically formed in the middle of the forming seat; the second lower pressing sleeve is inserted into the first central through hole of the first lower pressing sleeve and then inserted from the lower part of the forming through hole; the upper pressing sleeve is inserted from the upper part of the forming through hole; the upper pressing sleeve is provided with a second central through hole; a third central through hole is formed in the second lower pressing sleeve; the lower pressing rod is inserted from the third central through hole and extends into the second central through hole; the first lower pressing sleeve and the second lower pressing sleeve are matched to form the lower end surface of the cam and a corresponding convex ring; a concave part is arranged on the outer circumferential surface of the lower end surface of the upper pressing sleeve; the concave part is arranged opposite to the lowest end of the lower part of the cam; the invention adopts powder metallurgy die-casting molding, and has low production cost.
Description
Technical Field
The invention relates to an improvement of a cam processing method, in particular to a cam processing method which adopts powder metallurgy die-casting molding and has low production cost and high production efficiency.
Background
As shown in fig. 1-3, is a cam in the needle cylinder of a hair spray machine, which comprises a body 11; the body 11 is cylindrical, the upper end surface 12 of the body 11 is horizontal, and the lower end surface 13 is inclined; a convex ring 14 is arranged on the lower end surface 13; the rotation center of the body 11, the rotation center of the cam through hole 15 and the rotation center of the convex ring 14 are collinear; at present, the cam is usually machined by a machining center, the production efficiency is low, and the production cost is high.
Therefore, a cam processing method which adopts powder metallurgy die-casting molding, has low production cost and high production efficiency, and can ensure that the density distribution of the cam body is more uniform so as to ensure that the performance of the cam is more stable is developed.
Disclosure of Invention
Aiming at the problems, the invention provides a cam processing method which adopts powder metallurgy die-casting molding, has low production cost and high production efficiency, and can ensure that the density distribution of the cam body is more uniform so as to ensure that the performance of the cam is more stable.
The invention provides a cam processing method, which comprises the following steps:
firstly, mixing materials;
pressing a die-casting die, wherein the die-casting die comprises an upper pressing sleeve, a forming seat, a first lower pressing sleeve, a second lower pressing sleeve and a lower pressing rod; a forming through hole is vertically formed in the middle of the forming seat; the second lower pressing sleeve is inserted into the first central through hole of the first lower pressing sleeve and then inserted from the lower part of the forming through hole; the upper pressing sleeve is inserted from the upper part of the forming through hole; the upper pressing sleeve is provided with a second central through hole; a third central through hole is formed in the second lower pressing sleeve; the lower pressing rod is inserted from the third central through hole and extends into the second central through hole; the forming through hole, the first central through hole, the second central through hole, the third central through hole and the rotating central line of the lower pressure rod are collinear; the first lower pressing sleeve and the second lower pressing sleeve are matched to form the lower end surface of the cam and a corresponding convex ring; the lower pressing rod is used for forming a cam through hole; the lower end surface of the upper pressing sleeve is horizontal; a concave part is arranged on the outer circumferential surface of the lower end surface of the upper pressing sleeve; the concave part is arranged opposite to the lowest end of the lower part of the cam; the upper pressing sleeve is matched with the lower pressing rod to form the upper end face of the cam, and meanwhile, a boss is formed in the concave part; making the longest length of the cam approximately equal to the shortest length of the cam plus the height of the boss;
thirdly, sintering;
fourthly, fine machining; removing the boss to form the upper end surface of the cam;
fifthly, heat treatment;
sixthly, polishing;
seventhly, cleaning;
eighthly, cooking oil;
and ninthly, packaging.
Preferably, the following components and percentages thereof are mixed uniformly: 1.5-2% of copper, 1.7-2% of nickel, 0.5-1% of graphite and the balance of iron.
Preferably, the diameter of the lower press rod is the same as the inner diameter of the first central through hole and the third central through hole.
Preferably, the boss is annular and is a natural extension of the body of the cam.
Preferably, the arc length of the boss is not less than one third of the arc length of the upper end face of the cam and not more than one half of the arc length of the upper end face of the cam.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the processing method of the cam adopts powder metallurgy die-casting molding, and has low production cost and high production efficiency; meanwhile, the density distribution of the cam body can be more uniform, so that the performance of the cam is more stable.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is an enlarged perspective view of a cam according to the present invention;
FIG. 2 is an enlarged view of a front view of the cam of the present invention;
FIG. 3 is an enlarged cross-sectional view A-A of the cam of the present invention;
FIG. 4 is an enlarged perspective view of the cam of the present invention during die-casting;
FIG. 5 is an enlarged view of a front view of the cam of the present invention as it is die cast;
FIG. 6 is an enlarged sectional view B-B of the cam of the present invention during die casting;
FIG. 7 is an enlarged front view of the cam die casting mold of the present invention;
FIG. 8 is an enlarged cross-sectional view of C-C of the die casting mold for the cam in accordance with the present invention;
FIG. 9 is an enlarged exploded view of the die casting mold for the cam according to the present invention;
FIG. 10 is an enlarged view of portion D of FIG. 8;
FIG. 11 is an enlarged view of section E of FIG. 9;
wherein: 1. pressing a sleeve; 2. forming a base; 3. a first lower pressing sleeve; 4. a second pressing sleeve; 5. 6, a depression bar; 11. a body; 12. an upper end surface; 13. a lower end face; 14. a convex ring; 15. cam through hole, 16, boss.
Detailed Description
While certain exemplary embodiments which embody the features and advantages of the present invention will be described in detail in the following description, it should be understood that the invention is capable of numerous changes in various embodiments without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
Tenthly, mixing materials, and uniformly mixing the following components in percentage: 1.5% of copper, 1.7% of nickel, 0.5% of graphite and the balance of iron;
eleven, pressing a die-casting die, wherein the die-casting die comprises an upper pressing sleeve 1, a forming seat 2, a first lower pressing sleeve 3, a second lower pressing sleeve 4 and a lower pressing rod 5; a forming through hole (not marked) is vertically arranged in the middle of the forming base 2; the second lower pressing sleeve 4 is inserted into a first central through hole (not marked) of the first lower pressing sleeve 3 and then inserted from the lower part of the forming through hole; the upper pressing sleeve 1 is inserted from the upper part of the forming through hole; a second central through hole (not marked) is arranged on the upper pressing sleeve 1; a third central through hole (not marked) is formed in the second lower pressing sleeve 4; the lower pressing rod 5 is inserted from the third central through hole and extends into the second central through hole; the forming through hole, the first central through hole, the second central through hole, the third central through hole and the rotating central line of the lower pressure rod 5 are collinear; the diameter of the lower pressure rod 5 is the same as the inner diameter of the first central through hole and the third central through hole; the first lower pressing sleeve 3 and the second lower pressing sleeve 4 are matched to form a lower end surface 13 of the cam and a corresponding convex ring 14; the lower pressure lever 5 is used for forming a cam through hole 15; the lower end surface of the upper pressing sleeve 1 is horizontal; a concave part 6 is arranged on the outer circumferential surface of the lower end surface of the upper pressing sleeve 1; the concave part 6 is arranged opposite to the lowest end of the lower part of the cam; the upper pressing sleeve 1 is matched with the lower pressing rod 5 to form the upper end surface of the cam, and meanwhile, a boss 16 is formed in the concave part 6; making the longest length of the cam approximately equal to the shortest length of the cam plus the height of the boss; the boss 16 is annular and is a natural extension of the cam body 11, and the arc length of the boss 16 is not less than one third of the arc length of the upper end face of the cam and not more than one half of the arc length of the upper end face of the cam;
twelfth, sintering; treating by a sintering method in conventional powder metallurgy forming;
thirteen, finish machining; removing the boss 16 to form the upper end surface of the cam;
fourteen, heat treatment; treating by conventional heat treatment method;
fifteen, polishing; processing according to a conventional polishing method;
sixthly, cleaning; treating by a conventional cleaning method;
seventhly, cooking oil; treating by conventional oil boiling method;
eighteen, packaging.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the processing method of the cam adopts powder metallurgy die-casting molding, and has low production cost and high production efficiency; meanwhile, the density distribution of the cam body 11 can be more uniform, so that the performance of the cam is more stable.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (5)
1. A method for processing a cam comprises the following steps:
firstly, mixing materials;
pressing a die-casting die, wherein the die-casting die comprises an upper pressing sleeve, a forming seat, a first lower pressing sleeve, a second lower pressing sleeve and a lower pressing rod; a forming through hole is vertically formed in the middle of the forming seat; the second lower pressing sleeve is inserted into the first central through hole of the first lower pressing sleeve and then inserted from the lower part of the forming through hole; the upper pressing sleeve is inserted from the upper part of the forming through hole; the upper pressing sleeve is provided with a second central through hole; a third central through hole is formed in the second lower pressing sleeve; the lower pressing rod is inserted from the third central through hole and extends into the second central through hole; the forming through hole, the first central through hole, the second central through hole, the third central through hole and the rotating central line of the lower pressure rod are collinear; the first lower pressing sleeve and the second lower pressing sleeve are matched to form the lower end surface of the cam and a corresponding convex ring; the lower pressing rod is used for forming a cam through hole; the lower end surface of the upper pressing sleeve is horizontal; a concave part is arranged on the outer circumferential surface of the lower end surface of the upper pressing sleeve; the concave part is arranged opposite to the lowest end of the lower part of the cam; the upper pressing sleeve is matched with the lower pressing rod to form the upper end face of the cam, and meanwhile, a boss is formed in the concave part; making the longest length of the cam approximately equal to the shortest length of the cam plus the height of the boss;
thirdly, sintering;
fourthly, fine machining; removing the boss to form the upper end surface of the cam;
fifthly, heat treatment;
sixthly, polishing;
seventhly, cleaning;
eighthly, cooking oil;
and ninthly, packaging.
2. The method of processing a cam according to claim 1, wherein: uniformly mixing the following components in percentage: 1.5-2% of copper, 1.7-2% of nickel, 0.5-1% of graphite and the balance of iron.
3. The method of processing a cam according to claim 1, wherein: the diameter of the lower pressure rod is the same as the inner diameter of the first central through hole and the third central through hole.
4. The method of processing a cam according to claim 1, wherein: the boss is annular and is the natural extension of the body of the cam.
5. The method of processing a cam according to claim 1, wherein: the arc length of the boss is not less than one third of the arc length of the upper end face of the cam and not more than one half of the arc length of the upper end face of the cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010406610.7A CN111590068B (en) | 2020-05-14 | 2020-05-14 | Cam machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010406610.7A CN111590068B (en) | 2020-05-14 | 2020-05-14 | Cam machining method |
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| Publication Number | Publication Date |
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| CN111590068A true CN111590068A (en) | 2020-08-28 |
| CN111590068B CN111590068B (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010406610.7A Active CN111590068B (en) | 2020-05-14 | 2020-05-14 | Cam machining method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1398602A (en) * | 1972-09-20 | 1975-06-25 | Wirkmaschinenbau Karl Marx Veb | Knitting machine cam assemblies prticularly for circular knitting machines |
| CN1380457A (en) * | 2001-04-09 | 2002-11-20 | 重机株式会社 | Sewing machine parts |
| CN102000824A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Manufacturing method of cam of engine camshaft |
| CN102328089A (en) * | 2011-09-26 | 2012-01-25 | 佛山市盈峰粉末冶金科技有限公司 | Powder metallurgy part with inclination angles between inner bores and parting surfaces and mould structure thereof |
| CN103056373A (en) * | 2013-01-24 | 2013-04-24 | 重庆聚能粉末冶金有限公司 | Method for manufacturing starting ratchet wheel of motorcycle |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
| CN104028765A (en) * | 2014-06-27 | 2014-09-10 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy component and production method of powder metallurgy component with through hole |
| CN105033259A (en) * | 2015-06-25 | 2015-11-11 | 马鞍山市华东粉末冶金厂 | Method for manufacturing automobile seat lifter bearing bush by means of powder metallurgy and product |
| US20160223016A1 (en) * | 2013-10-03 | 2016-08-04 | Ntn Corporation | Sintered bearing and manufacturing process therefor |
| CN109610066A (en) * | 2019-01-29 | 2019-04-12 | 常州市郑陆特种纺机专件有限公司 | Coaxial more cam combination syringe spindles |
-
2020
- 2020-05-14 CN CN202010406610.7A patent/CN111590068B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1398602A (en) * | 1972-09-20 | 1975-06-25 | Wirkmaschinenbau Karl Marx Veb | Knitting machine cam assemblies prticularly for circular knitting machines |
| CN1380457A (en) * | 2001-04-09 | 2002-11-20 | 重机株式会社 | Sewing machine parts |
| CN102000824A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Manufacturing method of cam of engine camshaft |
| CN102328089A (en) * | 2011-09-26 | 2012-01-25 | 佛山市盈峰粉末冶金科技有限公司 | Powder metallurgy part with inclination angles between inner bores and parting surfaces and mould structure thereof |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
| CN103056373A (en) * | 2013-01-24 | 2013-04-24 | 重庆聚能粉末冶金有限公司 | Method for manufacturing starting ratchet wheel of motorcycle |
| US20160223016A1 (en) * | 2013-10-03 | 2016-08-04 | Ntn Corporation | Sintered bearing and manufacturing process therefor |
| CN104028765A (en) * | 2014-06-27 | 2014-09-10 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy component and production method of powder metallurgy component with through hole |
| CN105033259A (en) * | 2015-06-25 | 2015-11-11 | 马鞍山市华东粉末冶金厂 | Method for manufacturing automobile seat lifter bearing bush by means of powder metallurgy and product |
| CN109610066A (en) * | 2019-01-29 | 2019-04-12 | 常州市郑陆特种纺机专件有限公司 | Coaxial more cam combination syringe spindles |
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| CN111590068B (en) | 2022-05-24 |
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Effective date of registration: 20230526 Address after: 215000, 1st floor, No. 283 Southwest Road, Sanxing Village, Mocheng Street, Changshu City, Suzhou City, Jiangsu Province Patentee after: Suzhou Dongling New Material Technology Co.,Ltd. Address before: 215000 Suzhou Lingzhi Powder Metallurgy Co., Ltd., Fengyang Industrial Zone, Weitang, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Suzhou Lingzhi Powder Metallurgy Co.,Ltd. |