CN1076800C - Integral compression type linear moving bearing without lubrication and friction - Google Patents
Integral compression type linear moving bearing without lubrication and friction Download PDFInfo
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- CN1076800C CN1076800C CN99109833A CN99109833A CN1076800C CN 1076800 C CN1076800 C CN 1076800C CN 99109833 A CN99109833 A CN 99109833A CN 99109833 A CN99109833 A CN 99109833A CN 1076800 C CN1076800 C CN 1076800C
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- spring sheet
- leaf spring
- end cap
- bearing
- end cover
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- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to a linear motion bearing in an integral compression type without lubrication or wear, which comprises a fixed end cover, interval blocks, plate spring pieces and a motion end cover, wherein each of the plate spring pieces is a hollow annular elastic piece, a plurality of hollow annular plate spring pieces are arranged in a stacking shape and are fixed between the fixed end cover and the motion end cover, the fixed end cover, the motion end cover and the plate spring pieces are connected and fixed by the interval blocks, the interval blocks which are uniformly fixed on two side surfaces of each of the plate spring pieces are positioned in a staggered mode correspondingly to the center of each of the plate spring pieces, a staggered angle is equal to or less than 60 DEG, the fixed end cover, the motion end cover and/ or the plate spring pieces are made of good conductive materials, and / or the conductive materials are coated on the surface. The present invention has the advantages of simple structure, no wear, small size, long stroke and unnecessary lubrication.
Description
The present invention relates to a kind of unlubricated nothing wearing and tearing linear motion bearing, the particularly a kind of unlubricated nothing wearing and tearing of integral compression type linear motion bearing that can bear unidirectional and/or bi-directional axial thrust, straight reciprocating motion is provided.
The unlubricated bearing that is made of barrel surface and bearing shell can running under the state of the friction surface of unlubricated oil (or fat), and the supporting to rotatablely moving is provided.The barrel surface and the bearing shell that are characterized in bearing rub, and the friction surface area is big, in order to reduce friction, often adopt antifriction material to make.Also should consider suitable width-diameter ratio during design so that heat radiation and discharge abrasive dust.The temperature rise meeting that this unlubricated bearing friction causes forms restriction to running speed and load, also can cause damage of the bearing or make bearing failure because of friction, as scratch, abrasive wear, seizure, fatigue, peel off, burn into corrodes or the like, in addition, it is not used in the supporting to straight reciprocating motion usually.
Knownly can provide straight-line bearing that rolling bearing is arranged, promptly spin in the bearing or roller are done circulation or acyclic straight reciprocating motion in bearing shell.This bearing replaces sliding friction with rolling friction, though the friction of rolling friction is less than sliding friction, but it still needs to lubricate, and when making the high frequency linear reciprocating motion, and spin or roller may roll to lose efficacy and bearing caused and scratch and influence the supporting of bearing.The failure mode of rolling bearing mainly contains fatigue flake, excessive permanent deformation and wearing and tearing.
Knownly can provide straight-line unlubricated nothing wearing and tearing linear motion bearing, have flat unlubricated nothing that the elastic plate of spiral groove the forms linear motion bearing that weares and teares by the surface by a kind of.The radial rigidity of this flat nothing wearing and tearing linear motion bearing is big, axial dimension is little, axial elasticity good, and by the flat unlubricated nothing that elastic plate the is formed linear motion bearing power consumption simple in structure, no of wearing and tearing.But the stroke that it provides is subjected to the restriction of diameter, and is generally all smaller.Bigger if desired movement travel must be done the diameter of bearing very big, thereby has strengthened the weight of bearing.And this bearing at the volley every elastic plate strain facies with, all equal stroke, to big stroke operating mode and/or when making the high frequency linear reciprocating motion, in the ess-strain quantity set at spiral groove place, easily tearing of elastic plate taken place and causes the inefficacy of bearing.The failure mode of this bearing mainly contains fatigue fracture, excessive permanent deformation etc.
Knownly can provide straight-line unlubricated nothing wearing and tearing linear motion bearing to also have electrostatic bearing, magnetic bearing etc., the former utilizes electric field force to make axle suspension floating, and the The latter magnetic force makes axle suspension floating; The former needs very large electric field strength, and structure is more complicated also, and application is restricted, and only uses in instrument such as gyroscope at present; The latter also has some shortcomings, for example needs control loop, complex structure, volume bigger or the like.In addition, they are mainly used in rotary bearing.
The objective of the invention is to overcome the deficiency of above-mentioned bearing, and provide a kind of and can bear unidirectional and/or bi-directional axial thrust, provide the unlubricated nothing wearing and tearing of the integral compression type linear motion bearing of straight reciprocating motion, it can not only accomplish need not lubricant oil or fat, there is not friction, and can provide straight-line supporting, bearing has high fatigue life.In addition, can also accomplish accurate localization, and elasticity and/or excellent conducting performance can be provided as required.
Embodiment of the present invention is as follows: integral compression type linear moving bearing without lubrication and friction provided by the invention, it is characterized in that: comprise fixedly end cap, spacer block, leaf spring sheet and motion end cap, the leaf spring sheet is hollow annular spring sheet, the hollow annular leaf spring sheet of multi-disc is folded repeatedly shape and arranges and be fixed in fixedly between the end cap and motion end cap, fixing end cap, be connected and fixed by spacer block between motion end cap and each the leaf spring sheet or be overall structure, the relative leaf spring sheet of the spacer block center of evenly fixing on evenly fixing spacer block and the another side on each leaf spring sheet one side side is staggeredly placed, staggered angle≤60 °, each leaf spring sheet fixing spacer block on the side of equidirectional vertically aligns; Fixedly end cap, motion end cap and/or leaf spring sheet adopt good conductive material manufacturing and/or apply good electric material in its surface.
During use, needs are realized that straight-line parts fixedly connected with the motion end cap, thereby become mover (as axle journal); Fixing end cap is fixedlyed connected with fixed member, thereby become stator (as bearing shell).The mutual motion of stator and mover spare is supported by the multi-disc leaf spring sheet between the two end cap, straight-line displacement amount promptly is the axial strain amount of leaf spring sheet and axial displacement accumulation, and the leaf spring sheet is by axial displacement and radially bend the relative displacement of satisfying mover and stator.Do not have wearing and tearing between each assembly of this bearing, need not lubricate, can not cause the bearing performance that influences bearing because of temperature rise.Two end cap and leaf spring sheet can adopt good conductive material to make and/or go up the good conductive material of coating in its surface.
Can make and realize accurate the location between moving parts and fixed member by adjusting the fixedly relative position of end cap and fixed member in the use, satisfy some pinpoint specific (special) requirements; Making does not have wearing and tearing between the relative movement parts, unlubricated; And, can realize the self-alignment function of mover by adopting suitable Placement.
Integral compression type linear moving bearing without lubrication and friction provided by the invention, owing to adopt sandwich plate spring sheet iterative structure, total displacement is the stack of each leaf spring sheet displacement amount, therefore almost can be superimposed with the spring sheet of any amount, thereby under all very little situation of the strain of keeping each leaf spring sheet, make bearing that axially straight reciprocating motion stroke can be arranged greatly, make this linear moving bearing without lubrication and friction that high anti-fatigue life can be arranged.
The unlubricated nothing wearing and tearing of this integral compression type linear motion bearing does not have friction and need not lubricate, and elasticity and/or good dynamic electric conductivity can be provided as required; And this linear motion bearing is simple in structure, do not have wearing and tearing, volume is little, stroke greatly, need not lubricate, not consume and execute power outward, do not need control loop, can realize accurate location.Be particularly suitable for using in the machinery of the super-clean environment in the cryogenic refrigerating systems such as space flight, space.In addition by adopting suitable spring material can satisfy some to flexible requirement.By adopting suitable fixed block material and spring material, can also provide required electrical property.For example: when requiring insulation, end cap adopts the insulating material manufacturing; When needing electric conductivity, end cap and/or leaf spring sheet all adopt good conductive material manufacturing and/or apply good conductive material in its surface; In order to satisfy the requirement of some dynamic electric conductivity, realize that brushless or electricity drag lead-in wire.
Further describe the present invention below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a spacer block relative position schematic representation fixing on the leaf spring sheet bi-side.
Wherein: fixedly end cap 1, spacer block 2, leaf spring sheet 3, motion end cap 4.
As shown in Figure 1, the unlubricated nothing wearing and tearing of integral compression type provided by the invention linear motion bearing, comprise fixedly end cap 1, spacer block 2, leaf spring sheet 3, motion end cap 4, leaf spring sheet 3 is hollow annular spring sheet, the hollow annular leaf spring sheet 3 of multi-disc is folded repeatedly shape to be arranged and is fixed in fixedly between the end cap 1 and motion end cap 4, fixedly is connected and fixed spacer block 2 or is overall structure between end cap 1, motion end cap 4 and each the leaf spring sheet 3; As shown in Figure 2, the spacer block 2 relative leaf spring sheet centers of evenly fixing on evenly fixing spacer block 2 and the another side on each leaf spring sheet 3 one side side are staggeredly placed, staggered angle≤60 °, each leaf spring sheet fixing spacer block on the side of equidirectional vertically aligns: fixedly end cap 1, motion end cap 4 and/or the 3 good conductive material manufacturings of employing of leaf spring sheet and/or apply good conductive material in its surface.
In the present embodiment, leaf spring sheet 3 is the ring spring sheet, quantity is 9, fixedly the spacer block 2 that is connected and fixed between end cap 1, motion end cap 4 and each the leaf spring sheet 3 respectively is three, between the three interblock spacer blocks of evenly fixing on each leaf spring sheet 3 one side side 2, the center of leaf spring sheet 3 is 120 ° of angles relatively, be staggeredly placed with the center of the three interblock spacer blocks of evenly fixing on the another side 2 with respect to leaf spring sheet 3, stagger angle equals 60 °, and each leaf spring sheet fixing spacer block on the side of equidirectional vertically aligns.Fixedly end cap 1, fixedly can realize linear relative movement between end cap and the motion end cap.
Fig. 2 is a spacer block relative position schematic representation fixing on the leaf spring sheet bi-side.As shown in Figure 2, the leaf spring sheet evenly is fixed with spacing block 2 between three with respect to leaf spring sheet 3 centers on the one side side, represents with solid line; Evenly be fixed with three spacer blocks 2 with respect to leaf spring sheet center 3 on the another side, dot, spacer block 2 fixing on the bi-side is staggeredly placed with respect to leaf spring sheet 3 centers, and staggered angle is 60 °.Certainly spacer block 2 can be four or five etc. as required, when being four, on the bi-side respectively the stagger angle of fixing spacer block 2 be 45 °; When being five, the stagger angle of the spacer block of fixing respectively on the bi-side 2 is 36 °.
Claims (3)
1. the unlubricated nothing wearing and tearing of integral compression type linear motion bearing, it is characterized in that, comprise fixedly end cap, spacer block, leaf spring sheet and motion end cap, the leaf spring sheet is hollow annular spring sheet, the hollow annular leaf spring sheet of multi-disc is folded repeatedly shape and arranges and be fixed in fixedly between the end cap and motion end cap, fixing end cap, be connected and fixed by spacer block between motion end cap and each the leaf spring sheet or be overall structure, on each leaf spring sheet one side side on evenly fixing spacer block and the another side evenly the center of the fixing relative leaf spring sheet of spacer block be staggeredly placed angle≤60 that interlock °.
2. by the unlubricated nothing wearing and tearing of the described integral compression type of claim 1 linear motion bearing, it is characterized in that each leaf spring sheet fixing spacer block on the side of equidirectional vertically aligns.
3. by the unlubricated nothing wearing and tearing of the described integral compression type of claim 1 linear motion bearing, it is characterized in that fixedly end cap, motion end cap and/or leaf spring sheet adopt good conductive material manufacturing and/or apply good conductive material in its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109833A CN1076800C (en) | 1999-07-16 | 1999-07-16 | Integral compression type linear moving bearing without lubrication and friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109833A CN1076800C (en) | 1999-07-16 | 1999-07-16 | Integral compression type linear moving bearing without lubrication and friction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281104A CN1281104A (en) | 2001-01-24 |
| CN1076800C true CN1076800C (en) | 2001-12-26 |
Family
ID=5274186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99109833A Expired - Fee Related CN1076800C (en) | 1999-07-16 | 1999-07-16 | Integral compression type linear moving bearing without lubrication and friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076800C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102066783A (en) * | 2008-06-24 | 2011-05-18 | 皇家飞利浦电子股份有限公司 | Linear bearing using rolling leaf springs |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033932A (en) * | 1983-08-02 | 1985-02-21 | Hazama Gumi Ltd | Sheathing work |
| DD260847A3 (en) * | 1986-09-11 | 1988-10-12 | Ilmenau Tech Hochschule | ARRANGEMENT FOR FRICTION-FREE CROSS-STRENGTH TORSION GRIPS LINEAR-SPRING RESISTANCE |
-
1999
- 1999-07-16 CN CN99109833A patent/CN1076800C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033932A (en) * | 1983-08-02 | 1985-02-21 | Hazama Gumi Ltd | Sheathing work |
| DD260847A3 (en) * | 1986-09-11 | 1988-10-12 | Ilmenau Tech Hochschule | ARRANGEMENT FOR FRICTION-FREE CROSS-STRENGTH TORSION GRIPS LINEAR-SPRING RESISTANCE |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281104A (en) | 2001-01-24 |
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