CN208734826U - A kind of ball-screw sealing structure - Google Patents
A kind of ball-screw sealing structure Download PDFInfo
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- CN208734826U CN208734826U CN201721882736.1U CN201721882736U CN208734826U CN 208734826 U CN208734826 U CN 208734826U CN 201721882736 U CN201721882736 U CN 201721882736U CN 208734826 U CN208734826 U CN 208734826U
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Abstract
The utility model provides a kind of ball-screw sealing structure, and sealing structure is detachably arranged on the inside of the both ends of feed screw nut；Sealing structure includes contact fluting sealing ring, oil storage felt, foreign matter storage rings and cover board；Contact sealing ring of slotting includes the first installation end and the second installation end, and the first installation end is set on screw axis outer diameter, and with screw axis Elastic Contact, the lateral surface of the first installation end is equipped with notch, and notch extends to the outer surface of the first installation end；There are accommodating chambers between the inner ring and screw axis of second installation end；Oil storage felt is set on screw axis outer diameter, and is located in the accommodating chamber of the second installation end inner ring；Foreign matter storage rings are set on the first installation end；Cover board is fixed on feed screw nut by fixing screws, with feed screw nut is fixed in the axial direction for the sealing ring so that contact is slotted.The utility model can prevent fine dusts from entering feed screw nut, can reduce internal lubrication grease spill-out, and long service life.
Description
Technical field
The utility model relates to ball-screw field, in particular to a kind of ball-screw sealing structure.
Background technique
The development of Modern Manufacturing Technology is advanced by leaps and bounds, and the accuracy lasting and service life to machine tool propose higher
Requirement.And to realize high-precision durability and high service life, the leakproofness of ball-screw is wherein particularly important influence
Factor.
The working environment of ball-screw typically contains processing dust or coolant liquid etc., and equipment is in the process of work operation
In, unavoidably also to generate a large amount of corrosivity dust, if these dust long-term accumulations in ball-screw surface, or even into
Enter the inside of lead screw assembly, ball-screw can be caused operating hinder and corrosion, cause generate heat and wear, influence service life or
Person damages running precision, so the anti-dust performance for improving ball-screw is extremely important；It is hindered simultaneously to reduce friction of motion
Power, lubricant grease is largely applied on each transmission parts of equipment, including ball-screw, and the grease leaked out can be to environment
It pollutes, therefore the sealing performance for improving ball-screw lubricating grease is also particularly important.
Common ball-screw sealing structure generally uses end face non-contacting seal mode, and structure specifically includes that silk
Thick stick axis, feed screw nut, ball, ball-recirculation device, labyrinth type sealing ring, fixing screws etc., end face seal structure is mainly by lead screw
Axis, feed screw nut, labyrinth type sealing ring, fixing screws are constituted, and general feed screw nut both ends are all equipped with labyrinth type sealing ring.
Existing sealing structure has the drawback that
First, labyrinth type sealing ring is installed in feed screw nut both ends of the surface, is non-contacting seal, internal diameter with lead screw shaft
On have profiling screw thread, be corresponding with the threaded passage in lead screw shaft, and be that there are gaps between the two.It is easy to cause so thin
Small dust or sundries are entered in feed screw nut by the gap between labyrinth type sealing ring and lead screw shaft, corrode lead screw shaft and lead screw
Nut, and cause operating of the ball in feed screw nut to be hindered, and then cause to generate heat, increase abrasion, sometimes results in rolling
Pearl is damaged, seriously affects ball-screw service life and running precision.
Second, labyrinth type sealing ring is non-contacting seal, injects the lubricant grease in feed screw nut, is transported in ball-screw
During turning, by the extruding of ball, the gap between labyrinth type sealing ring and lead screw shaft is overflowed, so that lead screw shaft, lead screw
It cannot adequately be lubricated between nut and ball.If metal contact can not enough occur for lubrication, lead to the increasing of friction with abrasion
The problems such as adding, causing ball-screw abrasion or the lost of life.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of high dust-proof ball-screw sealing structures.
In order to achieve the above objectives, the technical solution of the utility model is as follows:
A kind of ball-screw sealing structure, the sealing structure are detachably arranged on the inside of the both ends of feed screw nut；Institute
Stating sealing structure includes:
One contact fluting sealing ring, contact fluting sealing ring include that the first installation end and diameter are greater than the first installation
Second installation end at end, the first installation end is set on screw axis outer diameter, and with screw axis Elastic Contact, the first installation end it is outer
Side is equipped with notch, and notch extends to the outer surface of the first installation end；Between the inner ring and screw axis of second installation end there are
Accommodating chamber；
One oil storage felt, oil storage felt are set on screw axis outer diameter, and are located in the accommodating chamber of the second installation end inner ring,
Oil storage felt is fixed in accommodating chamber by holding screw；
One foreign matter storage rings, foreign matter storage rings are set on the first installation end；
One cover board, cover board are fixed on feed screw nut by fixing screws, are used for so that contact fluting sealing ring and silk
Thick stick nut is fixed in the axial direction.
In one embodiment of the utility model, the outer surface of first installation end is equipped at least one along first
The resettlement groove of installation end circumferencial direction setting, the resettlement groove is interior to be equipped with ring spring.
In one embodiment of the utility model, the sealing structure further includes a gasket, and gasket is arranged in contact
It slots between sealing ring and the contact surface of feed screw nut.
In one embodiment of the utility model, the contact fluting sealing ring is made of resin material.
Through the above technical solutions, the beneficial effects of the utility model are:
The utility model by change ring structure be contact slot sealing ring, and increase spring, foreign matter storage rings,
Gasket, cover board and fixing screws, so that fine dusts or sundries not can enter inside feed screw nut by the gap discharge of fluting,
The risk that ball-screw is corroded is reduced, guarantees ball-screw smooth movements and its service life；Increase oil storage felt, tight
Determine screw, so that the lubricant grease spill-out in feed screw nut substantially reduces, improve lubrication state, reduces ball-screw fortune
Turn calorific value, effectively increase wearability, the reliability of ball-screw, further ensure ball-screw service life and
Precision stability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the utility model ball-screw sealing structure scheme of installation；
Corresponding component title represented by number is as follows in Fig. 1:
1, feed screw nut 2, screw axis 11, the first installing port 12, the second installing port 20, screw hole 30, contact are opened
Slot sealing ring 31, notch 31b, resettlement groove 31c, ring spring 32, the second installation end 32a, holds first installation end 31a
Receive chamber 40, oil storage felt 41, holding screw 50, foreign matter storage rings 60, cover board 61, fixing screws 70, gasket.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
Shown in Figure 1, the utility model discloses a kind of ball-screw sealing structure, sealing structure is removably installed
On the inside of the both ends of feed screw nut 1, it is equipped with the first installing port 11 on the inside of the both ends of feed screw nut 1 and diameter is greater than first
Second installing port 12 of installing port, the second installing port 12 are interior equipped with screw hole 20；Sealing structure includes contact fluting sealing ring
30, oil storage felt 40, foreign matter storage rings 50 and cover board 60.
Contact fluting sealing ring 30 is made of the resin material of high-wearing feature, and contact sealing ring 30 of slotting includes the
One installation end 31 and diameter are greater than the second installation end 32 of the first installation end, and the first installation end 31 is set in 2 outer diameter of screw axis
On, and with 2 Elastic Contact of screw axis, the lateral surface of the first installation end 31 is equipped with notch 31a, and notch 31a extends to the first peace
Fill end 31 outer surface, in use, touch contact fluting sealing ring fine dusts or sundries be discharged to by notch 31a
The outer surface of first installation end 31, prevents fine dusts or sundries from entering inside feed screw nut 1, reduces ball-screw and is corroded
Risk, guarantee ball-screw smooth movements and its service life；Second installation end 32 is mounted on the first installation of feed screw nut 1
In mouthfuls 11, there are accommodating chamber 32a between the inner ring and screw axis 2 of the second installation end 32, set on the inner wall up and down of accommodating chamber 32a
There is screw hole 20.
Oil storage felt 40 is set on 2 outer diameter of screw axis, and is located in the accommodating chamber 32a of 32 inner ring of the second installation end, storage
Screw hole also is provided on asphalt felt 40, holding screw 41 passes through the screw on screw hole and accommodating chamber 32a on oil storage felt 40
Oil storage felt 40 is fixed in accommodating chamber 32a by hole 20；The setting of oil storage felt 40 is so that lubricant grease spill-out significantly subtracts
It is few, and can play the role of storing grease, reduce calorific value, wearability, the reliability of ball-screw are improved, extends it and uses the longevity
Life, reduces the maintenance cost used.
Foreign matter storage ring set 50 is located on 31 outer ring of the first installation end, so that from the notch 31a of contact fluting sealing ring
The fine dusts or sundries adsorption storage of middle discharge wherein, do not allow in fine dusts or sundries secondary pollution to lead screw shaft.
Cover board 60 is equipped with screw hole 20, and fixing screws 61 pass through on screw hole 20 and the second installing port 32 on cover board 60
Screw hole 20 cover board 60 is fixed on feed screw nut 1, for so that contact fluting sealing ring 30 and feed screw nut 1 be
It is fixed on axial direction, and coupling mechanism force is big, it is close to can effectively prevent contact fluting caused by being caught in because of fine dusts or sundries
The problem of seal is mutually deflected with feed screw nut position.
The utility model is equipped at least one on the outer surface of the first installation end 31 and sets along the first installation end circumferencial direction
The resettlement groove 31b set, resettlement groove is two in the application, is equipped with ring spring 31c, the setting of ring spring in resettlement groove 31b
So that contact fluting sealing ring is bonded completely with lead screw shaft surface, and contacted with constant pressure, plays scrapings and dust-proof pair
Resealing effect.
The utility model sealing structure further includes a gasket 70, and the setting of gasket 70 is in contact fluting sealing ring 30 and silk
Between the contact surface of 1 first installing port 31 of thick stick nut, so that contact fluting sealing ring and feed screw nut have certain elasticity even
It connects, eliminates that may be present because of position phase deviation caused by rigging error between the two.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of ball-screw sealing structure, the sealing structure is detachably arranged on the inside of the both ends of feed screw nut；It is special
Sign is that the sealing structure includes:
One contact fluting sealing ring, contact fluting sealing ring include that the first installation end and diameter are greater than the first installation end
Second installation end, the first installation end are set on screw axis outer diameter, and with screw axis Elastic Contact, the lateral surface of the first installation end
It is equipped with notch, notch extends to the outer surface of the first installation end；There are receivings between the inner ring and screw axis of second installation end
Chamber；
One oil storage felt, oil storage felt are set on screw axis outer diameter, and are located in the accommodating chamber of the second installation end inner ring, oil storage
Felt is fixed in accommodating chamber by holding screw；
One foreign matter storage rings, foreign matter storage rings are set on the first installation end；
One cover board, cover board are fixed on feed screw nut by fixing screws, are used for so that contact fluting sealing ring and lead screw spiral shell
Mother is fixed in the axial direction.
2. a kind of ball-screw sealing structure according to claim 1, which is characterized in that the appearance of first installation end
Face is equipped at least one resettlement groove along the setting of the first installation end circumferencial direction, is equipped with ring spring in the resettlement groove.
3. a kind of ball-screw sealing structure according to claim 1, which is characterized in that the sealing structure further includes one
Gasket, gasket are arranged between contact fluting sealing ring and the contact surface of feed screw nut.
4. a kind of ball-screw sealing structure according to claim 1, which is characterized in that the contact fluting sealing ring
It is made of resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882736.1U CN208734826U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721882736.1U CN208734826U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208734826U true CN208734826U (en) | 2019-04-12 |
Family
ID=66022840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721882736.1U Active CN208734826U (en) | 2017-12-28 | 2017-12-28 | A kind of ball-screw sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208734826U (en) |
-
2017
- 2017-12-28 CN CN201721882736.1U patent/CN208734826U/en active Active
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