CN87204726U - Dual-aperture integral body oil-retaining bearing - Google Patents

Dual-aperture integral body oil-retaining bearing Download PDF

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Publication number
CN87204726U
CN87204726U CN 87204726 CN87204726U CN87204726U CN 87204726 U CN87204726 U CN 87204726U CN 87204726 CN87204726 CN 87204726 CN 87204726 U CN87204726 U CN 87204726U CN 87204726 U CN87204726 U CN 87204726U
Authority
CN
China
Prior art keywords
oil
holes
disjunctor
diplopore
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN 87204726
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Chinese (zh)
Inventor
周静安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XIELIN ELECTRO-MECHANICAL FITTING PARTS FACTORY YIYANG COUNTY HUNAN PROV
Original Assignee
XIELIN ELECTRO-MECHANICAL FITTING PARTS FACTORY YIYANG COUNTY HUNAN PROV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XIELIN ELECTRO-MECHANICAL FITTING PARTS FACTORY YIYANG COUNTY HUNAN PROV filed Critical XIELIN ELECTRO-MECHANICAL FITTING PARTS FACTORY YIYANG COUNTY HUNAN PROV
Priority to CN 87204726 priority Critical patent/CN87204726U/en
Publication of CN87204726U publication Critical patent/CN87204726U/en
Withdrawn legal-status Critical Current

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Abstract

The utility model belongs to a double-hole integral body oil retaining bearing for an A and a B shaft holes of a gear box housing of an electric fan. The A and the B holes are designed into an integral structure with the two holes parallel to each other, lug bosses of the A and the B holes form step shape, and iron-base powder metallurgic bearing material with high sulfur content is adopted. The utility model has the advantages that the cutting character is favorable, the deformation amount is small, the product quality and the product service life are enhanced and extended, the product cost is lowered greatly, and precious metallic materials, such as copper, aluminium, tin, etc., can be saved.

Description

Dual-aperture integral body oil-retaining bearing
The utility model belongs to the diplopore disjunctor oil-impregnated bearing of a kind of electric fan gear housing A, B axis hole.
At present, China is at the gear housing A of electric fan oscillating part, in the B axis hole, generally adopt two separated type copper bases (or iron-based) powder metallurgy oil-impregnated bearing cover, A hole bearing housing wherein, form with the die casting of aluminum alloy gear housing, B hole bearing housing is then behind the through hole of a φ 7 of processing on the gear housing, copper base (or iron-based) sintered metal powder bearing cover with the B hole is pressed in φ 7 holes again, this technological method, the manufacture cost height, quality of product is unreliable, particularly is difficult to reach technical requirement on design for axis parallel degree between two holes and pitch-row tolerance equidimension precision, thereby has reduced the accuracy of mesh and the working life thereof of fan gear.In recent years, some factory once tried out A, B hole piece bearing, owing to adopted conventional powder metallurgy oil-impregnated bearing material, this material is inhomogeneous because of metallographic structure, cause difference of hardness very big, so processing difficulties, can't reach technical requirementss such as dimensional accuracy and form and position tolerance, and this other part is in die casting gear housing process, because the effect of internal stress makes A, B hole disjunctor oil-impregnated bearing produce gross distortion, causes product rejection, consequently, this oil-impregnated bearing does not obtain using in national fan industry as yet.
Task of the present utility model is the oil-impregnated bearing of a diplopore disjunctor of design, and it is rational in infrastructure, excellent cutting performance, and when the hot pressing and the state of cooling, amount of deformation is no more than 0.01~0.03mm.
The scheme that solves this task is: the overall structure that A, B two holes are designed to be parallel to each other, its parallelism is controlled in the φ 0.10mm scope, center distance tolerance is controlled in the 0.13mm scope, and make the boss in A, B two holes constitute stepped shaft, two step cylindricals are connected by tangent direction and are solid (shown in accompanying drawing 1,2), this diplopore disjunctor oil-impregnated bearing (1), the Fe-S-C that has adopted high sulfur content are the iron-base bearing material, and its sulphur content is greater than 0.5%.Because this material metallographic structure and material hardness profile are very even, so excellent cutting performance, amount of deformation is little.When the compacting blank, the compression moulding simultaneously of A hole after the endoporus finishing, can reach technical requirementss such as its dimensional accuracy and surface roughness, then adopts the method for machining to reach technical requirementss such as its dimensional accuracy and form and position tolerance for the B hole.Diplopore disjunctor oil-impregnated bearing (1) behind the processed finished products, with its die casting in aluminum alloy gear housing (2) time (as shown in Figure 3), after the cast of high temperature aluminum water, in the cooled and solidified process, the amount of deformation of its diplopore disjunctor oil-impregnated bearing (1) is not more than 0.01~0.03mm, thereby has guaranteed the quality requirement of product.
This diplopore disjunctor oil-impregnated bearing possesses following advantage:
(1) owing to the material excellent cutting performance, the percentage of A-class goods during processing B hole can reach more than 98%.
(2) because the material deformation amount is little, when conventional die casting gear housing, its die casting up-to-standard rate can reach that 95%(only refers to diplopore disjunctor oil-impregnated bearing and the product percent of pass that influences).
(3) reduced product cost, except that having improved the die casting up-to-standard rate, in the ordinary course of things, can reduce the labor content about 40% of gear housing, every desk fan cost can descend 0.35 yuan after estimating to adopt this diplopore disjunctor oil-impregnated bearing, the whole nation produces 10,000,000 oscillating fans every year approximately, then can be country and saves 3,500,000 yuan of costs.
(4) noble metal materials such as a large amount of copper, aluminium, tin have been saved for country.
(5) behind Yuandong Electric Fan Factory, Guangzhou City's this diplopore disjunctor oil-impregnated bearing on probation, prove that quality of product meets the requirements, and improved product working life greatly.
Description of drawings:
Fig. 1: be the plan view of diplopore disjunctor oil-impregnated bearing (1);
Fig. 2: be the plan view of diplopore disjunctor oil-impregnated bearing (1);
Fig. 3: be the erection drawing after diplopore disjunctor oil-impregnated bearing (1) and aluminum alloy gear housing (2) die casting.
Embodiment: accompanying drawing 1,2,3 is an embodiment of the present utility model, and the A hole dimension is φ 8 + 0.065 + 0.045The B hole dimension is φ 4 + 0.040 + 0.010, two hole centre distance are: 18.25 + 0.19 + 0.06Two hole parallelism franchises are φ 0.10; A hole straightness accuracy franchise is 0.012; The surface roughness in two holes is
This diplopore disjunctor oil-impregnated bearing is to adopt the mould bases that floats, oppositely compression moulding, wherein A hole (φ 8) moulding when blank is suppressed, after its endoporus finishing, can reach designing requirement, B hole (φ 4) then adopts the method for machining to reach its required precision, diplopore disjunctor oil-impregnated bearing (1) behind finished product, die casting is in gear housing (2) time, after 700 ℃ of high temperature aluminum water cast, in the cooled and solidified process, its geometrical shape, dimensional accuracy and form and position tolerance all meet the designing quality requirement.

Claims (3)

1, a kind of diplopore disjunctor oil-impregnated bearing, it is characterized in that: the overall structure that A, B two holes are designed to be parallel to each other, its parallelism is controlled in the Φ 0.10mm scope, center distance tolerance control is in the 0.13mm scope, and make A, B two hole boss be stepped shaft, two step cylindricals are connected by tangent direction and are solid;
2, by the described diplopore disjunctor of claim 1 oil-impregnated bearing, it is characterized in that: the Fe-S-C that has adopted high sulfur content is the iron-base bearing material, and its sulphur content is greater than 0.5%;
3, by claim 1 and 2 described diplopore disjunctor oil-impregnated bearings, it is characterized in that: the iron-base bearing material of high sulfur content, in high temperature and cooling procedure, its amount of deformation is not more than 0.01~0.03mm.
CN 87204726 1987-10-30 1987-10-30 Dual-aperture integral body oil-retaining bearing Withdrawn CN87204726U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 87204726 CN87204726U (en) 1987-10-30 1987-10-30 Dual-aperture integral body oil-retaining bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 87204726 CN87204726U (en) 1987-10-30 1987-10-30 Dual-aperture integral body oil-retaining bearing

Publications (1)

Publication Number Publication Date
CN87204726U true CN87204726U (en) 1988-08-17

Family

ID=4820577

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 87204726 Withdrawn CN87204726U (en) 1987-10-30 1987-10-30 Dual-aperture integral body oil-retaining bearing

Country Status (1)

Country Link
CN (1) CN87204726U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671222A (en) * 2013-12-13 2014-03-26 中国航空工业集团公司金城南京机电液压工程研究中心 Power-driven gas compressor of novel structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671222A (en) * 2013-12-13 2014-03-26 中国航空工业集团公司金城南京机电液压工程研究中心 Power-driven gas compressor of novel structure

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