CN209671416U - It is a kind of to pre-tighten disappear gap linear bearing and its linear bearing system - Google Patents
It is a kind of to pre-tighten disappear gap linear bearing and its linear bearing system Download PDFInfo
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- CN209671416U CN209671416U CN201920176728.8U CN201920176728U CN209671416U CN 209671416 U CN209671416 U CN 209671416U CN 201920176728 U CN201920176728 U CN 201920176728U CN 209671416 U CN209671416 U CN 209671416U
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- linear bearing
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- tooth
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Abstract
A kind of preload disappears gap linear bearing and its linear bearing system, and the linear bearing system includes one and pre-tightens and disappear gap linear bearing and one is set in the retainer that the preload disappears on the outside of gap linear bearing.The gap linear bearing that disappears that pre-tightens includes cylinder, and the gap tooth group that disappears at least one axial end face of the cylinder is set, the gap tooth group that disappears includes multiple spaced gap teeth that disappear, and includes an acute angle between the extending direction of the gap tooth that disappears and the axial direction of the cylinder.On the radial section along the cylinder, the gap tooth that disappears extends towards the center of circle of the cylinder.The gap tooth that disappears of this linear bearing system is supported achievees the purpose that the gap that disappears on the axis, while also having the purpose pre-tightened.The gap tooth that disappears can also be avoided to extend under the action of the retainer and sealing ring towards the center of circle far from the cylinder simultaneously, so that the gap between the linear bearing and axis be avoided to increase.
Description
Technical field
The utility model belongs to technical field of bearings, especially a kind of to pre-tighten disappear gap linear bearing and its linear bearing system
System.
Background technique
In the mating application of generic linear bearing completed products, in bearing sleeve of the elder generation Product Assembly to matching, as
Fixed and positioning.Again to bearing bore diameter and diameter bearing major diameter fit it is mating after, carry out linear running work.But practical mating
In, bearing bore diameter is upper tolerance, and linear bearing outer diameter is lower tolerance, it is excessively loose sometimes in the two cooperation, and gap is excessive, makes
It will affect service performance precision in.Bearing bore diameter be lower tolerance, linear bearing be upper tolerance, the two cooperation when again compared with
Tightly, gapless not only consumes the excessive energy in use, and is easily damaged the external diameter surface roughness of linear bearing, thus also shadow
Ring its service performance.Meanwhile even if the precision of linear bearing and bearing block is very high, using a period of time, due to former linear bearing
Abrasion meeting between bearing so that the internal diameter gap between axis and bearing increases so that occur in motion process vibration,
Noise even not can guarantee linear precision, and then shorten service life, influence the service life of the other components of complete machine yet.
Utility model content
In view of this, the present invention provides it is a kind of can disappear to avoid the preload of above-mentioned problem gap linear bearing and its
Linear bearing system.
It is a kind of to pre-tighten the gap linear bearing that disappears comprising a cylinder, and at least one axis being arranged on the cylinder
The gap tooth group that disappears on end face.The gap tooth group that disappears includes multiple spaced gap teeth that disappear.The extending direction of the gap tooth that disappears
It include an acute angle between the axial direction of the cylinder.On the radial section along the cylinder, the gap tooth that disappears is towards described
The center of circle of cylinder extends.
Further, the gap linear bearing that disappears that pre-tightens further includes the open seam being arranged on the cylinder, described
Open seam is along the axially extending of the cylinder and through the radial sidewalls of the cylinder.
Further, the preload gap linear bearing that disappears includes two groups and is separately positioned on two axial ends of the cylinder
The gap tooth group that disappears.
Further, the gap linear bearing that disappears that pre-tightens further includes multiple axial directions being arranged at intervals on the cylinder lateral wall
Position limiting structure, multiple axial limit structure are arranged along the circumferencial direction of the cylinder.
Further, only one axial end face of the cylinder be provided with one group described in disappear gap tooth group, the preload disappears
Gap linear bearing further includes the axial limit structure on the lateral wall of multiple the other end that the cylinder is arranged in, multiple axis
Circumferencial direction to position limiting structure along the cylinder arranges.
Further, each for disappearing gap tooth group gap tooth that disappears along the axial length of the cylinder is less than the cylinder
Axial length.
A kind of linear bearing system comprising one as described above to pre-tighten and disappear gap linear bearing and one is set in
The retainer pre-tightened on the outside of the gap linear bearing that disappears.
Further, the linear bearing system further includes at least one described disappear in gap tooth group and retainer being arranged in
Elastic seal ring between side wall is to increase pretightning force and the gap ability that disappears, the number of the quantity of the elastic seal ring and the gap tooth group that disappears
It measures identical, at least one groove is offered on the inner sidewall of the retainer, which sets the elastic seal ring for blocking.
Further, the linear bearing system includes that preload described in two disappears gap linear bearing, this two preloads disappear
One end for being provided with axial limit structure of gap linear bearing is provided adjacent to.
Further, outer diameter of the cylinder in free shape is greater than the internal diameter of the retainer, and the preload gap that disappears is straight
It further includes the open seam being arranged on the cylinder that spool, which is held, and in open seam closure, the outer diameter of the cylinder is less than
The internal diameter of the retainer.
Compared with prior art, linear bearing system provided by the utility model is due to having at least one to be arranged described
The gap tooth group that disappears on one axial end face of cylinder, and the extending direction for each gap tooth that disappears that this disappears gap tooth group and the cylinder
Axial direction between include an acute angle, i.e., it extends to the center of circle of cylinder, thus when axis is inserted into the linear bearing, the gap tooth that disappears
It supports and achievees the purpose that the gap that disappears on the axis, while also there is the purpose pre-tightened.May be used also under the action of the retainer simultaneously
It is extended to avoid the gap tooth that disappears towards the center of circle far from the cylinder, so that the gap between the linear bearing and axis be avoided to increase.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of linear bearing system provided by the utility model.
Fig. 2 (a) to Fig. 2 (d) is by linear bearing system provided by the utility model with different structure and combination
The structural schematic diagram of linear bearing.
The cross section structure schematic diagram for the tool linear bearing system that Fig. 3 is Fig. 1.
Specific embodiment
Specific embodiment of the utility model is further elaborated below.It should be understood that herein to this
The explanation of utility model embodiment is not used to limit the protection scope of the utility model.
It as shown in Figure 1 to Figure 3, is a kind of structural schematic diagram of linear bearing system provided by the utility model.It is described
Linear bearing system includes one and pre-tightens the gap linear bearing 10 that disappears, and one is set in described pre-tighten on the outside of the gap linear bearing 10 that disappears
Retainer 20 and at least one be arranged in and described pre-tighten the elastic seal ring that disappears between gap linear bearing 10 and retainer 20
30.It is envisioned that described, to have the linear bearing system for pre-tightening the gap function that disappears further include other some functional modules, such as
The axis for being plugged in the preload and disappearing in gap linear bearing 10 is set, and setting disappears gap linear bearing 10 and axis in the preload
Between lubricating oil etc., which is a technique known to those skilled in the art, and details are not described herein.
The gap linear bearing 10 that disappears that pre-tightens includes a cylinder 11, at least one axial direction on the cylinder 10 is arranged in
The gap tooth group 12 that disappears on end face, multiple axial limit structures 13 being arranged at intervals on 10 side wall of cylinder and one set
Set the open seam 14 on the cylinder 10.The cylinder 11, the gap that disappears tooth group 12, axial limit structure 13 are integrally formed.It is described
The diameter of cylinder 11 should be suitable with the diameter of axis.The gap tooth group 12 that disappears can have one group, it is possible to have two groups, set
It sets at least one axial end face of the cylinder 10.The gap tooth group 12 that disappears can have multiple gap teeth that disappear, multiple to disappear
The setting of gap interdental septa, and the central angle of the gap tooth that disappears disappears greater than adjacent two on the radial section along the cylinder 11
The central angle at the interval of gap tooth.The axial limit structure 13 is on multiple spaced side walls for protruding from the cylinder 10
Convex block, and along the circumferencial direction of the cylinder 11 arrange.It is envisioned that the axial limit structure 13 and retainer 20
It is coupled to fix the axial limit structure 13 to fix the preload and disappear gap linear bearing 10 and retainer 20 along axial
Relative position.The open seam 14 is along the axially extending of the cylinder 11 and through the radial sidewalls of the cylinder 11.It is described
Open seam 14 is used to the gap linear bearing 10 that disappears that pre-tightens being installed on the retainer 20, i.e., during installation, along cylinder 11
Cylinder 11 described in radial compression so as to reduce the diameter of the cylinder 11, and work as the cylinder 11 filling in the retainer
When 20, then the cylinder 11 is supported on the inner sidewall of the retainer 20.It is envisioned that in order to reach said effect,
Outer diameter of the cylinder 11 in free shape is greater than the internal diameter of the retainer 20.The cylinder in the open seam 14 closure
11 outer diameter is less than or equal to the internal diameter of the retainer 20.As shown in Fig. 2, according to the quantity of the gap tooth group 12 that disappears, and
The position of axial limit structure 13, the preload disappears, and gap linear bearing 10 can there are many combination and structures.In Fig. 2 (a), institute
The gap tooth group 12 that disappears is stated with one group, and axial limit structure 13 is arranged on the lateral wall of the other end of the cylinder 11.Scheming
In 2 (b), the gap tooth group 12 that disappears is with two groups and is separately positioned on two axial end faces of the cylinder 11, and axially limits
The middle part of the cylinder 11 is arranged in bit architecture 13.In Fig. 2 (c), the gap tooth group 12 that disappears also only has one group, and is arranged
On one axial end face of the cylinder 11, and the middle part of the cylinder 11 is arranged in axial limit structure 13.It can think
To preload shown in Fig. 2 (c) disappears gap linear bearing 10 suitable for the bigger bearing of axial length.In Fig. 2 (d)
In, merge along axial direction and the gap tooth group 12 that makes to disappear is located at free end for the gap linear bearing 10 that disappears of preload shown in two institute Fig. 2 (a)
Composite structure, i.e., this two pre-tighten the one end for being provided with axial limit structure 13 of gap linear bearing of disappearing and are provided adjacent to.It is above-mentioned
Four kinds of situations be that the preload disappears the most common structure of gap linear bearing 10.Certainly other structures be there may also be, herein no longer
It repeats.
The retainer 20 is a tubular structure, is used to support and protects the preload to disappear gap linear bearing 10.In order to
The axial limit structure 13 is coupled, a mounting groove 21 is offered on the inner sidewall of the retainer 20.The retainer 20
It can be made of metal, such as aluminium.
The setting of elastic seal ring 30 disappears between gap tooth group 12 and retainer 20 described, to further increase pretightning force
With the effect for the gap that disappears, i.e., after preload disappears the abrasion of gap linear bearing 10, straight line after being worn with the effect of the elastic seal ring 30
Bearing tooth group gap filling.It is envisioned that the elastic seal ring 30 it is not necessary to, i.e., it is described in some occasions
Linear bearing system can be not provided with the elastic seal ring 30.When the linear bearing system has the elastic seal ring 30
When, the quantity of the elastic seal ring 30 is identical as the quantity of gap tooth group 12 that disappears.The retainer 20 should also include one recessed
Slot 22, the groove 22 set the elastic seal ring 30 for blocking, and therefore, the diameter of the elastic seal ring 30 should be greater than
The diameter of the groove 22 is so that elastic seal ring 30 exposes the inner sidewall of the retainer 20 and supports in the gap tooth group that disappears
On 12.
Compared with prior art, linear bearing system provided by the utility model is due to having at least one to be arranged described
The gap tooth group 12 that disappears on one axial end face of cylinder 10, and the extending direction for each gap tooth that disappears that this disappears gap tooth group 12 and institute
Stating includes an acute angle between the axial direction of 11 body of cylinder, i.e., it extends to the center of circle of cylinder 11, thus when axis is inserted into the linear bearing
When 10, which supports achievees the purpose that the gap that disappears on the axis, while also having the purpose pre-tightened.Simultaneously in the retainer
20 extend with that can also avoid the gap tooth that disappears under the action of elastic seal ring 30 towards the center of circle far from the cylinder 10, to avoid
Gap between the linear bearing and axis increases.
The above is only the preferred embodiments of the utility model, are not used to the limitation protection scope of the utility model, any
Modification, equivalent replacement or improvement within the spirit of the present invention etc. are all covered in the scope of the claims of the utility model.
Claims (10)
- The gap linear bearing 1. a kind of preload disappears, it is characterised in that: the gap linear bearing that disappears that pre-tightens includes a cylinder, Yi Jishe The gap tooth group that disappears at least one axial end face of the cylinder is set, the gap tooth group that disappears includes multiple spaced gaps that disappear Tooth includes an acute angle between the extending direction of the gap tooth that disappears and the axial direction of the cylinder, in the radial direction along the cylinder On section, the gap tooth that disappears extends towards the center of circle of the cylinder.
- 2. as described in claim 1 pre-tighten the gap linear bearing that disappears, it is characterised in that: the preload gap linear bearing that disappears further includes One open seam being arranged on the cylinder, the open seam is along the axially extending of the cylinder and through the cylinder Radial sidewalls.
- 3. as described in claim 1 pre-tighten the gap linear bearing that disappears, it is characterised in that: the gap linear bearing that disappears that pre-tightens includes two Group is separately positioned on the gap tooth group that disappears on two axial ends of the cylinder.
- 4. as claimed in claim 3 pre-tighten the gap linear bearing that disappears, it is characterised in that: the preload gap linear bearing that disappears further includes Multiple axial limit structures being arranged at intervals on the cylinder lateral wall, circumference of multiple axial limit structure along the cylinder Direction arrangement.
- 5. as described in claim 1 pre-tighten the gap linear bearing that disappears, it is characterised in that: only one axial end face of the cylinder The gap that disappears described in being provided with one group tooth group, the gap linear bearing that disappears that pre-tightens further includes multiple the other end that the cylinder is arranged in Lateral wall on axial limit structure, multiple axial limit structure along the cylinder circumferencial direction arrange.
- 6. as described in claim 1 pre-tighten the gap linear bearing that disappears, it is characterised in that: each for disappearing gap tooth group disappears gap tooth It is less than the axial length of the cylinder along the axial length of the cylinder.
- 7. a kind of linear bearing system, it is characterised in that: the linear bearing system includes that a such as claim 1 to 6 is any Preload described in disappears gap linear bearing and one is set in the retainer that the preload disappears on the outside of gap linear bearing.
- 8. linear bearing system as claimed in claim 7, it is characterised in that: described that there is the linear bearing for pre-tightening the gap function that disappears System further includes that at least one that the elastic seal ring to disappear between gap tooth group and the inner sidewall of retainer is arranged in is pre- to increase Clamp force and the gap ability that disappears, the quantity of the elastic seal ring is identical as the quantity of gap tooth group that disappears, on the inner sidewall of the retainer At least one groove is offered, which sets the elastic seal ring for blocking.
- 9. linear bearing system as claimed in claim 7, it is characterised in that: described that there is the linear bearing for pre-tightening the gap function that disappears System includes two and pre-tightens the gap linear bearing that disappears as claimed in claim 5, this two pre-tighten being provided with for the gap linear bearing that disappears One end of axial limit structure is provided adjacent to.
- 10. linear bearing system as claimed in claim 8, it is characterised in that: outer diameter of the cylinder in free shape is greater than The internal diameter of the retainer, the gap linear bearing that disappears that pre-tightens further includes the open seam being arranged on the cylinder, in institute The outer diameter of the cylinder is less than the internal diameter of the retainer when stating open seam closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920176728.8U CN209671416U (en) | 2019-01-31 | 2019-01-31 | It is a kind of to pre-tighten disappear gap linear bearing and its linear bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920176728.8U CN209671416U (en) | 2019-01-31 | 2019-01-31 | It is a kind of to pre-tighten disappear gap linear bearing and its linear bearing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209671416U true CN209671416U (en) | 2019-11-22 |
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ID=68568283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920176728.8U Active CN209671416U (en) | 2019-01-31 | 2019-01-31 | It is a kind of to pre-tighten disappear gap linear bearing and its linear bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209671416U (en) |
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2019
- 2019-01-31 CN CN201920176728.8U patent/CN209671416U/en active Active
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