CN101251112A - Medical air pump offset cam as well as manufacturing process thereof - Google Patents
Medical air pump offset cam as well as manufacturing process thereof Download PDFInfo
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- CN101251112A CN101251112A CNA2008100609349A CN200810060934A CN101251112A CN 101251112 A CN101251112 A CN 101251112A CN A2008100609349 A CNA2008100609349 A CN A2008100609349A CN 200810060934 A CN200810060934 A CN 200810060934A CN 101251112 A CN101251112 A CN 101251112A
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- eccentric cam
- air pump
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Abstract
The invention discloses a medical air pump eccentric cam and a manufacturing process thereof, wherein the medical air pump eccentric cam comprises a convex shaft; moreover, the lower end of the convex shaft is provided with a conjoined shaft seat which is provided with a conjoined fan-shaped lug boss extending towards a right side face; moreover, the end face of the fan-shaped lug boss is at least lower than the end face of the shaft seat. The manufacturing process comprises powder forming, copper infiltrated sintering, abrasive blasting treatment, vacuum waxdip and package and warehousing. Compared with the prior art, the invention adopts the structure and copper infiltrated sintering technology, i.e. sintering begins after completing product forming; moreover, during sintering, a product is additionally provided with sheet copper which is fully melted and evenly infiltrated into the product; therefore, the sintered product has high rigidity, high strength and even texture.
Description
Technical field
The present invention relates to the technical field of eccentric wheel and manufacturing process thereof, relate in particular to medical air pump eccentric cam and manufacturing process thereof.
Background technique
This eccentric cam is the vitals that guarantees that air pump runs well, owing to be to be applied to medical system, to noise, environmental protection, and the requirement of the each side such as stability of product is high especially.Originally adopt casting technology, product performance instability, reject rate height.Because this product application area is wider, and can adopt powder metallurgical technique production from analyzing in appearance, but the mechanical property of product and hardness, density, machinability is all more special, adopts traditional powder metallurgical technique to be difficult to realize the various specific (special) requirements of this product.
Summary of the invention
Technical problem to be solved by this invention is the present situation at prior art, and a kind of quality height, the technology cost is low, manufacturing efficiency is high medical air pump eccentric cam and manufacturing process thereof are provided.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: the medical air pump eccentric cam comprise protruding axle, and above-mentioned protruding axle lower end is shaped on the axle bed of disjunctor; Axle bed is shaped on the fan-shaped boss of the disjunctor of side extension to the right, and the end face of fan-shaped boss is lower than the end face of axle bed at least.
For optimizing technique scheme, the technical measures of taking also comprise:
Above-mentioned protruding axle top is shaped on the U-shaped boss of disjunctor, and U-shaped boss top surface is smooth.
The axle bed top that is positioned at above-mentioned fan-shaped boss top is shaped on the axle bed convex shoulder, and the height of axle bed convex shoulder end face is lower than the height of axle bed end face; The axle bed top of protruding axle outer circumferential side is shaped on recessed all grooves
The fan-shaped angle of above-mentioned fan-shaped boss cross section is 10 ° to 180 °, and fan-shaped boss thickness is 0.25 times to 0.75 times of axle bed.
Fan-shaped mouthful of direction of the U-shaped mouth of above-mentioned U-shaped boss and fan-shaped boss is consistent.
The manufacturing process of medical air pump eccentric cam comprises the steps:
The powder compacting step: the iron-based powder that proportioning is mixed uses the metallurgical powder forming method to press the eccentric cam blank that medical air pump uses;
Ooze the copper sintering step: get ready and ooze copper sheet, with above-mentioned eccentric cam blank with ooze copper sheet and go into the sintering furnace sintering, and ooze copper sheet and be seated in eccentric cam blank top; Form the eccentric cam semi-finished articles behind the sintering;
The sand blast step: the eccentric cam semi-finished articles after sintering is finished, carry out sand blast, the surface treatment of product is clean;
Vacuum waxdip step: will handle clean eccentric cam semi-finished articles and carry out the processing of vacuum waxdip, and obtain above-mentioned medical air pump eccentric cam;
Packing warehouse-in step: with above-mentioned medical air pump eccentric cam packing warehouse-in.
In order to optimize above-mentioned process program, the technical measures of taking also comprise:
Above-mentioned eccentric cam blank density is 6.55g/cm
3To 6.85g/cm
3The shape of oozing copper sheet comprises cylindrical body, pyramid or prism, and weight is 11g to 13g.
Above-mentioned sintering furnace Control for Kiln Temperature is at 1115 ℃ to 1125 ℃, and the sintering furnace network speed is controlled at 28HZ to 25HZ, and semi-finished articles density is 6.9g/cm
3To 7.3g/cm
3
Above-mentioned sand blast, the time of sandblast first is 5 minutes, then, product was inverted sandblast again 3 minutes.
Above-mentioned vacuum waxdip treatment temperature is 80 ℃ to 100 ℃, and the time is 35 minutes to 45 minutes.
Compared with prior art, the present invention has adopted protruding axle lower end to be shaped on the axle bed of disjunctor; Axle bed is shaped on the fan-shaped boss of the disjunctor of side extension to the right, and the end face of fan-shaped boss is lower than the end face of axle bed at least; And, adopted and oozed the copper sintering technology, through the powder compacting step, ooze copper sintering step, sand blast step, vacuum waxdip step, just after finishing, formed product begins sintering, when sintering, add copper sheet on the product in addition, in sintering process, copper sheet fully dissolves in the even infiltration product, and hardness height, the intensity of product is big behind the sintering like this, quality is even.
Description of drawings
Fig. 1 is an embodiment of the invention structural representation;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is Fig. 1 cross-sectional schematic;
Fig. 4 is Fig. 1 elevational schematic view;
Fig. 5 is an embodiment of the invention process flow diagram.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Figure grade explanation: protruding axle 1, axle bed 2, fan-shaped boss 3, U-shaped boss 11, axle bed convex shoulder 21, recessed all grooves 22.
Fig. 1 is extremely shown in Figure 4 to be the structural representation of medical air pump eccentric cam, the structural feature explanation:
The medical air pump eccentric cam comprises protruding axle 1, and protruding axle 1 lower end is shaped on the axle bed 2 of disjunctor; Axle bed 2 is shaped on the fan-shaped boss 3 of the disjunctor of side extension to the right, and the end face of fan-shaped boss 3 is lower than the end face of axle bed 2 at least.
Protruding axle 1 top is shaped on the U-shaped boss 11 of disjunctor, and U-shaped boss 11 top surfaces are smooth.
The fan-shaped angle of fan-shaped boss 3 cross sections is 10 ° to 180 °, and fan-shaped boss 3 thickness are 0.25 times to 0.75 times of axle bed 2.
3 fan-shaped mouthfuls of directions of the U-shaped mouth of U-shaped boss 11 and fan-shaped boss are consistent.
Shown in Figure 5 is embodiment of the invention process flow diagram.The manufacturing process of medical air pump eccentric cam comprises the steps:
The powder compacting step: the iron-based powder that proportioning is mixed uses the metallurgical powder forming method to press the eccentric cam blank that medical air pump uses; The metallurgical powder forming method is generally sends into press top to the ferrous alloy powder that mixes, by suppressing automatically in the die cavity that adds powder box adding mould;
Ooze the copper sintering step: get ready and ooze copper sheet, with the eccentric cam blank with ooze copper sheet and go into the sintering furnace sintering, and ooze copper sheet and be seated in eccentric cam blank top; Form the eccentric cam semi-finished articles behind the sintering;
The sand blast step: the eccentric cam semi-finished articles after sintering is finished, carry out sand blast, the surface treatment of product is clean;
Vacuum waxdip step: will handle clean eccentric cam semi-finished articles and carry out the processing of vacuum waxdip, and obtain the medical air pump eccentric cam;
Packing warehouse-in step: with medical air pump eccentric cam packing warehouse-in.
Eccentric cam blank density is 6.55g/cm
3To 6.85g/cm
3The shape of oozing copper sheet comprises cylindrical body, pyramid or prism, and weight is 11g to 13g.
The sintering furnace Control for Kiln Temperature is at 1115 ℃ to 1125 ℃, and the sintering furnace network speed is controlled at 28HZ to 25HZ, and semi-finished articles density is 6.9g/cm
3To 7.3g/cm
3
Sand blast, the time of sandblast first is 5 minutes, then, product was inverted sandblast again 3 minutes.
Vacuum waxdip treatment temperature is 80 ℃ to 100 ℃, and the time is 35 minutes to 45 minutes.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (10)
1. the medical air pump eccentric cam comprises protruding axle (1), it is characterized in that: described protruding axle (1) lower end is shaped on the axle bed (2) of disjunctor; Described axle bed (2) is shaped on the fan-shaped boss (3) of the disjunctor of side extension to the right, and the end face of fan-shaped boss (3) is lower than the end face of described axle bed (2) at least.
2. medical air pump eccentric cam according to claim 1 is characterized in that: described protruding axle (1) top is shaped on the U-shaped boss (11) of disjunctor, and described U-shaped boss (11) top surface is smooth.
3. medical air pump eccentric cam according to claim 2, it is characterized in that: axle bed (2) top that is positioned at described fan-shaped boss (3) top is shaped on axle bed convex shoulder (21), and the height of described axle bed convex shoulder (21) end face is lower than the height of described axle bed (2) end face; Axle bed (2) top of described protruding axle (1) outer circumferential side is shaped on recessed all grooves (22)
4. medical air pump eccentric cam according to claim 3 is characterized in that: the fan-shaped angle of described fan-shaped boss (3) cross section is 10 ° to 180 °, and described fan-shaped boss (3) thickness is 0.25 times to 0.75 times of described axle bed (2).
5. medical air pump eccentric cam according to claim 3 is characterized in that: fan-shaped mouthful of direction of the U-shaped mouth of described U-shaped boss (11) and described fan-shaped boss (3) is consistent.
6. the manufacturing process of medical air pump eccentric cam is characterized in that: comprise the steps:
The powder compacting step: the iron-based powder that proportioning is mixed uses the metallurgical powder forming method to press the eccentric cam blank that medical air pump uses;
Ooze the copper sintering step: get ready and ooze copper sheet, with described eccentric cam blank with ooze copper sheet and go into the sintering furnace sintering, and the described copper sheet that oozes is seated in described eccentric cam blank top; Form the eccentric cam semi-finished articles behind the sintering;
The sand blast step: the eccentric cam semi-finished articles after sintering is finished, carry out sand blast, the surface treatment of product is clean;
Vacuum waxdip step: will handle clean eccentric cam semi-finished articles and carry out the processing of vacuum waxdip, and obtain described medical air pump eccentric cam;
Packing warehouse-in step: with described medical air pump eccentric cam packing warehouse-in.
7. the special process of medical air pump eccentric cam according to claim 6 is characterized in that: described eccentric cam blank density is 6.55g/cm
3To 6.85g/cm
3Described shape of oozing copper sheet comprises cylindrical body, pyramid or prism, and weight is 11g to 13g.
8. the special process of medical air pump eccentric cam according to claim 7 is characterized in that: described sintering furnace Control for Kiln Temperature is at 1115 ℃ to 1125 ℃, and described sintering furnace network speed is controlled at 28HZ to 25HZ, and described semi-finished articles density is 6.9g/cm
3To 7.3g/cm
3
9. the special process of medical air pump eccentric cam according to claim 8 is characterized in that: described sand blast, and the time of sandblast first is 5 minutes, then, product was inverted sandblast again 3 minutes.
10. the special process of medical air pump eccentric cam according to claim 9 is characterized in that: described vacuum waxdip treatment temperature is 80 ℃ to 100 ℃, and the time is 35 minutes to 45 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100609349A CN101251112B (en) | 2008-03-26 | 2008-03-26 | Medical air pump offset cam as well as manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100609349A CN101251112B (en) | 2008-03-26 | 2008-03-26 | Medical air pump offset cam as well as manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101251112A true CN101251112A (en) | 2008-08-27 |
| CN101251112B CN101251112B (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100609349A Active CN101251112B (en) | 2008-03-26 | 2008-03-26 | Medical air pump offset cam as well as manufacturing process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381581A (en) * | 2011-09-29 | 2012-03-21 | 浙江海森纺机科技有限公司 | Heating line-cutting cam on coiling machine for cord-weaved knotless net |
| CN103244400A (en) * | 2012-02-14 | 2013-08-14 | 无锡格兰登福托玛斯气动系统有限公司 | Eccentric wheel for medical pump and process for manufacturing eccentric wheel |
| CN110788332A (en) * | 2019-11-29 | 2020-02-14 | 济南市博瀚精工机械有限公司 | Powder metallurgy eccentric wheel for atomizer compression pump and preparation method thereof |
-
2008
- 2008-03-26 CN CN2008100609349A patent/CN101251112B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381581A (en) * | 2011-09-29 | 2012-03-21 | 浙江海森纺机科技有限公司 | Heating line-cutting cam on coiling machine for cord-weaved knotless net |
| CN103244400A (en) * | 2012-02-14 | 2013-08-14 | 无锡格兰登福托玛斯气动系统有限公司 | Eccentric wheel for medical pump and process for manufacturing eccentric wheel |
| CN103244400B (en) * | 2012-02-14 | 2016-05-25 | 无锡格兰登福托玛斯气动系统有限公司 | A kind of eccentric wheel for medical pump |
| CN110788332A (en) * | 2019-11-29 | 2020-02-14 | 济南市博瀚精工机械有限公司 | Powder metallurgy eccentric wheel for atomizer compression pump and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101251112B (en) | 2010-10-27 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Jinxin Powder Matallurgy Co., Ltd. Assignor: Chen Huilian Contract record no.: 2011330000691 Denomination of invention: Medical air pump offset cam as well as manufacturing process thereof Granted publication date: 20101027 License type: Exclusive License Open date: 20080827 Record date: 20110609 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170524 Address after: 315202, 29, Jin Tong Road, camel street, Zhenhai District, Zhejiang, Ningbo Patentee after: Ningbo Jinxin Powder Matallurgy Co., Ltd. Address before: 315020 Ningbo Jin Xin Powder Metallurgy Co., Ltd., 32 Jia Yan Road, Jiangbei District, Zhejiang, Ningbo Patentee before: Chen Huilian |
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| TR01 | Transfer of patent right |