CN201170184Y - Medical air pump eccentric cam - Google Patents
Medical air pump eccentric cam Download PDFInfo
- Publication number
- CN201170184Y CN201170184Y CNU2008200846570U CN200820084657U CN201170184Y CN 201170184 Y CN201170184 Y CN 201170184Y CN U2008200846570 U CNU2008200846570 U CN U2008200846570U CN 200820084657 U CN200820084657 U CN 200820084657U CN 201170184 Y CN201170184 Y CN 201170184Y
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- China
- Prior art keywords
- shaped
- eccentric cam
- air pump
- shaped boss
- sintering
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- Expired - Lifetime
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Abstract
The utility model discloses an eccentric cam for a medical air pump, which comprises a convex shaft, wherein an integrated shaft seat is arranged on the lower end of the convex shaft. An integrated sector-shaped boss extending rightwardly is arranged on the shaft seat, and the end face of the sector-shaped boss is at least lower than the end face of the shaft seat. The manufacturing process comprises the following steps of powder moulding, sintering with copper cemented, blast sanding, vacuum wax dipping, and packaging and warehousing. Compared with the prior art, the eccentric cam for the medical air pump adopts the integrated shaft seat arranged on the lower end of the convex shaft; the integrated sector-shaped boss extending rightwardly is arranged on the shaft seat, and the end face of the sector-shaped boss is at least lower than the end face of the shaft seat; in addition, the eccentric cam for the medical air pump adopts the copper-cemented sintering technology; that is to say, the sintering begins after a product is molded, copper pieces are added into the product during the sintering, and the copper pieces are dissolved sufficiently and are evenly infiltrated into the product during the sintering process; thus, the product has a high hardness, a high strength and an even texture after the sintering.
Description
Technical field
The utility model relates to the technical field of eccentric wheel and manufacturing process thereof, relates in particular to the medical air pump eccentric cam.
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 in the utility model 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 are provided.
The utility model 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.
Compared with prior art, the utility model 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 the utility model example structure schematic 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 the utility model embodiment process flow diagram.
Embodiment
Embodiment describes in further detail the utility model 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 the utility model embodiment 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 utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (5)
1, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200846570U CN201170184Y (en) | 2008-03-26 | 2008-03-26 | Medical air pump eccentric cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200846570U CN201170184Y (en) | 2008-03-26 | 2008-03-26 | Medical air pump eccentric cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170184Y true CN201170184Y (en) | 2008-12-24 |
Family
ID=40209237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200846570U Expired - Lifetime CN201170184Y (en) | 2008-03-26 | 2008-03-26 | Medical air pump eccentric cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170184Y (en) |
-
2008
- 2008-03-26 CN CNU2008200846570U patent/CN201170184Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081224 Effective date of abandoning: 20080326 |