CN212717861U - Ball screw with high transmission precision - Google Patents
Ball screw with high transmission precision Download PDFInfo
- Publication number
- CN212717861U CN212717861U CN202020895910.1U CN202020895910U CN212717861U CN 212717861 U CN212717861 U CN 212717861U CN 202020895910 U CN202020895910 U CN 202020895910U CN 212717861 U CN212717861 U CN 212717861U
- Authority
- CN
- China
- Prior art keywords
- nut
- auxiliary
- main
- ball screw
- main nut
- 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.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a ball screw with high transmission precision, which comprises a main nut, an auxiliary nut and a screw rod, wherein the main nut and the auxiliary nut are arranged on the screw rod, the inner sides of the main nut and the auxiliary nut are provided with arc-shaped spiral internal threads, and the outer sides of the main nut and the auxiliary nut are both provided with ball returning devices; a connecting sheet is arranged between the main nut and the auxiliary nut; and a sealing ring is arranged at one end of the main nut, which deviates from the auxiliary nut. A ball screw that transmission precision is high, relative axial displacement through two nuts makes the steel ball in two ball nuts paste respectively tightly on two opposite sides of spiral slot rolling, when eliminating axial clearance with this kind of method pretension, can effectively guarantee ball screw's transmission precision and axial rigidity, block in external dust enters into the nut through the sealing washer, extension ball screw's life, this device has this device and has high transmission speed, high accuracy, high transmission efficiency, the reliability is high, and is with low costs.
Description
Technical Field
The utility model belongs to the technical field of ball screw and specifically relates to a ball screw that transmission precision is high.
Background
The ball screw is the most commonly used transmission element in tool machinery and precision machinery, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency. Ball screws are widely used in various industrial equipments and precision instruments due to their small frictional resistance. Its function is to convert the rotary motion into a linear motion, which is a further extension and development of the acme screw, the important meaning of this development is to change the bearing from sliding motion to rolling motion.
Modern ball screw has more defect, ball screw's the inconvenient elimination of axial clearance, lead to ball screw to descend at the during operation precision, and great clearance can lead to ball screw's rigidity to descend simultaneously, modern ball screw's bearing capacity is also lower simultaneously, in addition, ball screw is when using, in dust and piece enter into ball screw easily, lead to ball screw's rigid wear to increase, ball screw's life has been reduced, for this reason, we propose a neotype ball screw.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ball screw that transmission precision is high can solve modern ball screw bearing capacity lower, inconvenient elimination axial clearance and the precision that leads to descends and the rigidity problem that descends.
In order to achieve the above object, the utility model provides a following technical scheme: a ball screw with high transmission precision comprises a main nut, an auxiliary nut and a screw rod, wherein the main nut and the auxiliary nut are arranged on the screw rod, inner spiral grooves are formed in the inner sides of the main nut and the auxiliary nut, outer spiral grooves are formed in the outer side of the screw rod, and ball returning devices are arranged on the outer sides of the main nut and the auxiliary nut; a connecting sheet is arranged between the main nut and the auxiliary nut; and a sealing ring is arranged at one end of the main nut, which deviates from the auxiliary nut.
As a further aspect of the present invention: the inner spiral rolling grooves on the inner sides of the main nut and the auxiliary nut are matched with the outer spiral rolling grooves on the outer side of the screw rod, and a plurality of steel balls are arranged between the inner spiral rolling grooves on the inner sides of the main nut and the auxiliary nut and the outer spiral rolling grooves on the outer side of the screw rod.
As a further aspect of the present invention: the even fixedly connected with multiunit connection piece locating pin in left side of connection piece, both sides are provided with the connector link about the right-hand member of connection piece, are provided with two nut clearance adjusting bolts on the connector link.
As a further aspect of the present invention: the even fixedly connected with multiunit connection piece locating pin in left side of connection piece, both sides are provided with the connector link about the right-hand member of connection piece, are provided with two nut clearance adjusting bolts on the connector link.
As a further aspect of the present invention: the main nut is provided with an oil injection hole, a first sealing ring jackscrew is arranged on a sealing ring of the main nut, and a second sealing ring jackscrew is arranged on a sealing ring of the auxiliary nut.
As a further aspect of the present invention: the outer wall of the main nut is provided with a main positioning hole, and the outer wall of the auxiliary nut is provided with an auxiliary positioning hole.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the connecting sheet is arranged between the main nut and the auxiliary nut, the connecting key on the connecting sheet can be adjusted through the double-nut gap adjusting bolt, so that the gap between the main nut and the auxiliary nut is adjusted, the steel balls in the two ball nuts are respectively attached to two opposite side surfaces of the spiral rolling groove through the relative axial displacement of the two nuts, when the axial gap is eliminated through pre-tightening by the method, the transmission precision and the axial rigidity of the ball screw can be effectively ensured, and the load capacity of the ball screw can be effectively improved by adopting a double-nut structure;
2. sealing rings are hermetically connected between the main nut and the auxiliary nut and the screw rod, so that dust and debris can be prevented from entering the ball screw through the sealing rings, and the long-time high-precision operation of the ball screw is ensured;
3. this device can effectively reduce the friction through the ball, and ball return ware on the ball screw can make the ball form a closed circulation circuit, and the oil filler point can pour into the lubricating oil lubrication into, and this device has high transmission speed, high accuracy, high transmission efficiency, reliability height, and is with low costs.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a side view of the connecting piece of the present invention;
FIG. 4 is a front view of the connecting sheet of the present invention;
fig. 5 is a schematic structural view of the main nut of the present invention;
fig. 6 is a schematic structural view of the middle and auxiliary nut of the present invention.
In the figure: 1. a seal ring; 2. a main nut; 3. a ball returning device; 4. a connecting bond; 5. a secondary nut; 6. a steel ball; 7. a screw rod; 8. an oil filler hole; 9. a first seal ring jackscrew; 10. a main positioning hole; 11. connecting sheets; 12. a secondary positioning hole; 13. a first seal ring jackscrew; 14. connecting piece positioning pins; 15. double nut clearance adjusting bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, a ball screw with high transmission precision includes a main nut 2, an auxiliary nut 5 and a screw 7, the main nut 2 and the auxiliary nut 5 are disposed on the screw 7, inner spiral rolling grooves are disposed on inner sides of the main nut 2 and the auxiliary nut 5, outer spiral rolling grooves are disposed on outer sides of the screw 7, the inner spiral rolling grooves on inner sides of the main nut 2 and the auxiliary nut 5 and the outer spiral rolling grooves on outer sides of the screw 7 are disposed in cooperation, a plurality of steel balls 6 are disposed between the inner spiral rolling grooves on inner sides of the main nut 2 and the auxiliary nut 5 and the outer spiral rolling grooves on outer sides of the screw 7, ball returning devices 3 are disposed on outer sides of the main nut 2 and the auxiliary nut 5, and when the steel balls 6 roll for several weeks between the inner spiral rolling grooves disposed on inner sides of the main nut 2 and the auxiliary nut 5 and the outer spiral rolling grooves disposed on outer sides of the screw 7, the steel balls are returned to positions between the screw 7 and the main nut 2 and the auxiliary, forming a closed loop pipeline;
a connecting sheet 11 is arranged between the main nut 2 and the auxiliary nut 5, a plurality of groups of connecting sheet positioning pins 14 are uniformly and fixedly connected to the left side of the connecting sheet 11, the main nut 2 and the auxiliary nut 5 are positioned by the connecting sheet positioning pins 14, connecting keys 4 are arranged on the upper side and the lower side of the right end of the connecting sheet 11, and double-nut gap adjusting bolts 15 are arranged on the connecting keys 4; the connecting key 4 is adjusted through the double-nut gap adjusting bolt 15, so that the distance between the main nut 2 and the auxiliary nut 5 is changed, the axial gap is changed, and the rigidity is effectively improved through prepressing;
the one end that deviates from each other between main nut 2 and the vice nut 5 all is provided with sealing washer 1, sealing washer 1 sets up in the outside of lead screw 7, through sealing washer 1 sealing connection between main nut 2 and vice nut 5 and the lead screw 7, oil filler point 8 has been seted up on main nut 2, be provided with first sealing washer jackscrew 9 on main nut 2's the sealing washer 1, be provided with second sealing washer jackscrew 13 on vice nut 5's the sealing washer 1, main locating hole 10 has been seted up on main nut 2's the outer wall, vice locating hole 12 has been seted up on vice nut 5's the outer wall.
The utility model discloses a structural feature and theory of operation: when the device is used, the screw rod 7 is connected with an external stepping motor, the main nut 2 and the auxiliary nut 5 are installed on the screw rod 7, the stepping motor drives the screw rod 7 to rotate, the main nut 2 and the auxiliary nut 5 can be converted into linear motion along with the rotation angle of the screw rod 7 according to the lead of the corresponding specification, so that the rotary motion is converted into linear motion, the steel ball 6 can greatly reduce the friction between the main nut 2 and the auxiliary nut 5 and the screw rod 7 during the motion, the rigid abrasion is greatly reduced, lubricating oil is injected through the oil injection hole 8 for lubrication, the ball returning device 3 enables the steel ball 6 to form a closed circulation loop between the main nut 2 and the auxiliary nut 5 and the screw rod 7, the sealing ring 1 can prevent dust and debris from entering the gap between the main nut 2 and the auxiliary nut 5 and the screw rod 7, the smooth motion of the steel ball 6 is ensured, and the service life of the device is prolonged, a connecting piece 11 is arranged between a main nut 2 and an auxiliary nut 5, a connecting key 4 on the connecting piece 11 can be adjusted through a double-nut gap adjusting bolt 15, so that a gap between the main nut 2 and the auxiliary nut 5 is adjusted, steel balls in two ball nuts are respectively attached to two opposite side surfaces of a spiral rolling groove through relative axial displacement of the two nuts, when the axial gap is eliminated through pre-tightening by the method, the transmission precision and the axial rigidity of the ball screw can be effectively guaranteed, and the device adopts a double-nut structure to simultaneously increase the load capacity of the ball screw.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A ball screw with high transmission precision comprises a main nut (2), an auxiliary nut (5) and a screw rod (7), and is characterized in that the main nut (2) and the auxiliary nut (5) are arranged on the screw rod (7), inner spiral rolling grooves are formed in the inner sides of the main nut (2) and the auxiliary nut (5), outer spiral rolling grooves are formed in the outer side of the screw rod (7), and ball returning devices (3) are arranged on the outer sides of the main nut (2) and the auxiliary nut (5); a connecting sheet (11) is arranged between the main nut (2) and the auxiliary nut (5); and a sealing ring (1) is arranged at one end of the main nut (2) and one end of the auxiliary nut (5) which are deviated from each other.
2. The ball screw with high transmission precision according to claim 1, characterized in that the inner spiral rolling grooves on the inner sides of the main nut (2) and the auxiliary nut (5) and the outer spiral rolling grooves on the outer side of the screw rod (7) are matched with each other, and a plurality of steel balls (6) are arranged between the inner spiral rolling grooves on the inner sides of the main nut (2) and the auxiliary nut (5) and the outer spiral rolling grooves on the outer side of the screw rod (7).
3. The ball screw with high transmission precision according to claim 1, characterized in that a plurality of groups of connecting sheet positioning pins (14) are uniformly and fixedly connected to the left side of the connecting sheet (11), connecting keys (4) are arranged on the upper side and the lower side of the right end of the connecting sheet (11), and double-nut gap adjusting bolts (15) are arranged on the connecting keys (4).
4. The ball screw with high transmission precision according to claim 1 is characterized in that the sealing ring (1) is arranged on the outer side of the screw rod (7), and the main nut (2) and the auxiliary nut (5) are connected with the screw rod (7) in a sealing mode through the sealing ring (1).
5. The ball screw with high transmission precision according to claim 1, characterized in that the main nut (2) is provided with an oil injection hole (8), the seal ring (1) of the main nut (2) is provided with a first seal ring jackscrew (9), and the seal ring (1) of the auxiliary nut (5) is provided with a second seal ring jackscrew (13).
6. The ball screw with high transmission precision as claimed in claim 1, characterized in that the main nut (2) is provided with a main positioning hole (10) on the outer wall thereof, and the auxiliary nut (5) is provided with an auxiliary positioning hole (12) on the outer wall thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020895910.1U CN212717861U (en) | 2020-05-25 | 2020-05-25 | Ball screw with high transmission precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020895910.1U CN212717861U (en) | 2020-05-25 | 2020-05-25 | Ball screw with high transmission precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717861U true CN212717861U (en) | 2021-03-16 |
Family
ID=74947072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020895910.1U Active CN212717861U (en) | 2020-05-25 | 2020-05-25 | Ball screw with high transmission precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685522A (en) * | 2021-09-01 | 2021-11-23 | 西安超精刀具设备有限公司 | Thickness-adjustable flexible gasket applied to double-nut structure screw rod |
-
2020
- 2020-05-25 CN CN202020895910.1U patent/CN212717861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685522A (en) * | 2021-09-01 | 2021-11-23 | 西安超精刀具设备有限公司 | Thickness-adjustable flexible gasket applied to double-nut structure screw rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2781064Y (en) | Rolling linear guide pair device | |
| CN201055955Y (en) | Long stroke numerically controlled drilling machine feed gear of drill miller | |
| CN212717861U (en) | Ball screw with high transmission precision | |
| US11644085B2 (en) | Reducer for high precision control | |
| CN206617585U (en) | A kind of leading screw bearing labyrinth seal structure | |
| CN214999189U (en) | Novel ball screw | |
| CN213064525U (en) | Ball screw with guide rod convenient to install | |
| CN211901255U (en) | Cantilevered gear assembly and engine | |
| CN219570655U (en) | Bearing positioning structure for spiral hydraulic actuator | |
| CN210265526U (en) | Multi-specification dustproof bearing | |
| CN210510188U (en) | Pre-tightening structure capable of reducing axial return clearance error of ball screw pair | |
| CN217683104U (en) | High-stability and high-reliability ball screw | |
| CN218207668U (en) | Double-nut precision ball screw | |
| CN110657158A (en) | Four-point contact type high-speed lead screw bearing | |
| CN218670466U (en) | Steel ball internal circulation type ball screw | |
| CN210081274U (en) | Be applied to ball screw strutting arrangement in digit control machine tool field | |
| CN201110135Y (en) | Ball dental type versatile spindle for screw drill | |
| CN203614588U (en) | Special thrust bearing used for vehicles | |
| CN214788567U (en) | External tooth double-raceway mixed rolling body type slewing bearing | |
| CN2908919Y (en) | Polish rod driver | |
| CN219242575U (en) | High-precision ball screw transmission device | |
| CN219549375U (en) | Ball slider capable of fully lubricating short-distance reciprocating motion | |
| CN217874031U (en) | Special ball screw of new energy automobile | |
| CN218935181U (en) | Ball screw capable of preventing lubricating oil from leaking | |
| CN220505565U (en) | Planetary thread roller bearing with pre-tightened outer ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |