CN203756897U - Nut main-driving ball screw pair - Google Patents
Nut main-driving ball screw pair Download PDFInfo
- Publication number
- CN203756897U CN203756897U CN201420119699.9U CN201420119699U CN203756897U CN 203756897 U CN203756897 U CN 203756897U CN 201420119699 U CN201420119699 U CN 201420119699U CN 203756897 U CN203756897 U CN 203756897U
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- CN
- China
- Prior art keywords
- nut
- ball screw
- screw pair
- leading screw
- nut seat
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a nut main-driving ball screw pair. The nut main-driving ball screw pair comprises a lead screw, a nut, a nut base, a bearing mechanism and a driving motor, wherein the nut base is arranged on the nut in an embedded mode through the bearing mechanism so that the nut can freely rotate in the circumferential direction relative to the nut base, the nut is connected with the driving motor through a transmission device, and the nut base is integrally connected with a workbench. The nut main-driving ball screw pair is small in rotation inertia and large in rigidity, the limit speed of the system is greatly increased, and low-speed operation and high-speed transmission can be achieved easily; meanwhile, the working accuracy is stable, the power of the motor is small, and the nut main-driving ball screw pair is simple in overall structure and convenient to install and adjust.
Description
Technical field
The utility model belongs to mechanical equipment technical field, relates to the main driving ball screw pair of a kind of nut.
Background technique
Along with the high speed development of the industries such as China's aviation, railway, boats and ships, electric power, the equipment of these industries is constantly updated, large-scale, heavy parts is on the increase, with it supporting part working machine tool also towards large-scale, heavy, at a high speed, efficient future development, this just requires the main driving mechanism ball screw pair nominal diameter of lathe larger, nominal lead is larger, and leading screw length is longer, support distances increasing etc.Traditional ball screw pair is using leading screw as main driving rotating machinery, the increasing of leading screw length and support distances add senior general and cause leading screw amount of deflection to increase, in mechanism system, can produce larger rotary inertia, greatly restrict the raising of system limits rotating speed, increased the power of drive motor simultaneously.Secondly, ball screw pair is to adjust gap assembling to regulate axial pretightening to reach certain rigidity by nut, then regulates rigidity by bearing preload is installed on leading screw axle journal.And in the use occasion of many high rigidity requirements, the ball screw pair that rotates to be main driving mode with leading screw improves rigidity and has had very large narrow limitation by strengthening axial prestretching force, cannot meet user's usage requirement.With respect to the ball screw pair using leading screw rotation as main driving mode, have an enormous advantage as rotation main driving mechanism tool with nut.Therefore, research and development are the inexorable trend of Rolling Components industry using nut rotation as the ball screw pair of main driving.
Model utility content
Main purpose of the present utility model is to provide the main driving ball screw pair of a kind of nut, thereby solve, the existing ball screw pair rotary inertia using leading screw rotation as main driving mode is large, rotating speed cannot improve and the inadequate defect that causes bigger error of leading screw rigidity.
In order to realize goal of the invention, the technological scheme that the utility model adopts is, the main driving ball screw pair of a kind of nut, include leading screw, nut, nut seat, gear mechanism and drive motor, described leading screw two ends are fixed on bed piece, nut is nested on leading screw, be provided with the spirality raceway of mutual correspondence along leading screw outer wall and nut inner wall, on raceway, be provided with corresponding reflux, in raceway and reflux, be provided with can circulating rolling ball, thereby described nut seat makes nut can along the circumferential direction rotate freely with respect to nut seat by nested being arranged on nut of gear mechanism, the front end of nut and nut seat is respectively arranged with corresponding flange arrangement, the flange arrangement of nut front end is connected with the rotating shaft of drive motor by transmission device, nut seat entirety links together with worktable.
Feature of the present utility model is also, gear mechanism adopts two groups of Biserial cylindrical roller bearings and end face cylindrical roller thrust bearing to coordinate and installs, wherein one group of gear mechanism is arranged between nut seat and the flange arrangement of nut front end, and another group gear mechanism is arranged between nut seat and the tail end of nut.
Leading screw and nut two ends junction point are provided with dust ring, and dust ring prevents from by screw fastening.
The flange arrangement place on nut seat top is provided with the lubricant oil interface perpendicular to axis, in nut seat chamber, be provided with a main oil gallery, on main oil gallery, be provided with three branched bottoms, wherein two branched bottoms lead to gear mechanism, and another branched bottom leads to nut inside.
Transmission device be pulley gear, sprocket transmission device or gear drive one of them.
The beneficial effects of the utility model are:
1) rotary inertia of the present utility model is little, has greatly improved the limit speed of system, is easy to realize low-speed running high-speed drive, can make selected power of motor less simultaneously;
2) the utility model leading screw does not rotate, and on its axle journal, without bearing is installed, can apply larger axial prestretching force to leading screw, makes the rigidity of a whole set of ball screw pair be able to great raising;
3) the utility model can be installed multiple rotating nut combining units on a rhizoid thick stick, and multiple worktable are by each self-driven at the same time or separately, its motion mutual noninterference;
4) the utility model leading screw does not rotate, and its supplemental support place, middle part, without circumferential friction, does not exist local pyrexia problem, and therefore its operating accuracy is relatively stable;
5) the utility model leading screw does not rotate, and cooling tube joint is more easily arranged, installed, and the mode that reduces temperature rise is also more;
6) rotating nut combining unit of the present utility model integrates multiple functional parts, and simplified design, is convenient to installation and adjustment.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is nut seat structural representation of the present utility model;
Fig. 3 is nut structure schematic diagram of the present utility model;
Fig. 4 is leading screw of the present utility model, nut and nut seat assembly structure schematic diagram.
In figure, 1. leading screw, 2. nut, 3. nut seat, 4. drive motor, 5. raceway, 6. reflux, 7. ball, 8. worktable, 9. Biserial cylindrical roller bearing, 10. end face cylindrical roller thrust bearing, 11. lubricant oil interfaces, 12. main oil galleries, 13. branched bottoms, 14. through holes, 15. belt pulleys, 16. transmission belts, 17. dust rings, 18. screws, 19. circlip for holes, 20. spacers, 21. packing rings, 22. locking nuts, 23. hexagonal cylindrical head screws.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The utility model provides a kind of nut main driving ball screw pair, as shown in Figure 1, include leading screw 1, nut 2, nut seat 3, gear mechanism and drive motor 4, described leading screw 1 two ends are fixed on bed piece, nut 2 is nested on leading screw 1, be provided with the spirality raceway 5 of mutual correspondence along leading screw 1 outer wall and nut 2 inwalls, on raceway 5, be provided with corresponding reflux 6, in raceway 5 and reflux 6, be provided with can circulating rolling ball 7, thereby described nut seat 3 makes nut 2 can along the circumferential direction rotate freely with respect to nut seat 3 by nested being arranged on nut 2 of gear mechanism, the front end of nut 2 and nut seat 3 is respectively arranged with corresponding flange arrangement, the flange arrangement of nut 2 front ends is connected with the rotating shaft of drive motor 4 by transmission device, nut seat 3 entirety link together with worktable 8.
When concrete enforcement, according to the demand of installing space, reflux 6 can adopt different time pearl endless form and preloading form, preferably adopts the reflux 6 of inner loop mode for good.Gear mechanism adopts two groups of Biserial cylindrical roller bearings 9 and end face cylindrical roller thrust bearing 10 to coordinate and installs, wherein one group of gear mechanism is arranged between nut seat 3 and the flange arrangement of nut 2 front ends, and another group gear mechanism is arranged between nut seat 3 and the tail end of nut 2.Nut 2 is in rotation and in moving process, will bear axial force and radial force vertically, the main bearing radial force of Biserial cylindrical roller bearing 9, and end face cylindrical roller thrust bearing 10 mainly bears axial force.Because of designing requirement compact structure, simple and easy, therefore lubricated aspect changes traditional Lubricant feeding mode, as shown in Figure 2, the utility model does not directly design oilhole on nut 2 matrixes, but at a standard lubricant oil interface 11 perpendicular to axis of the flange arrangement place on nut seat 3 tops design, concentrate lubricant oil is provided by gas station, in nut seat 3 chambeies, be provided with one along axial main oil gallery 12, on main oil gallery, 12 are provided with three branched bottoms 13, wherein two branched bottoms 13 lead to gear mechanism, another branched bottom leads to nut 2, as shown in Figure 3, on nut 2, be designed with circular groove along its circumferencial direction, several uniform through holes 14 of milling on circular groove, lubricant oil is flow in nut 2 inner chambers, for providing good lubrication between leading screw 1 and nut 2.Transmission device between nut 2 and drive motor 4 can select pulley gear, sprocket transmission device or gear drive one of them, the utility model preferably adopts pulley gear, correspondingly, belt pulley is installed respectively on the flange arrangement of nut front end and on drive motor 4 has cover on 15, two belt pulleys 15 of belt pulley to have transmission belt 16.
In installation process, in the raceway 5 of leading screw 1 and nut 2, fill ball 7 and pack reflux 6 into, as shown in Figure 4, packing dust ring 17 into and adopt that screw 18 is fastening to be prevented from the junction point at leading screw 1 and nut 2 two ends subsequently.Divide order to pack end face cylindrical roller thrust bearing 10 at nut seat 3 flange arrangement one end inner chambers, pack subsequently Biserial cylindrical roller bearing 9 into, reinstall circlip for hole 19, can limit bearing according to the relevance of the size of processing and axially scurry out and come off.In like manner, divide order to pack end face cylindrical roller thrust bearing 10, Biserial cylindrical roller bearing 9 and circlip for hole 19 at nut seat 3 tail end inner chambers.On the cylindrical of nut 2 flange arrangement one end, pack packing ring 21 into, then be inserted in the assemblying body of nut seat 3 and gear mechanism, the flange arrangement of nut seat 3 is towards the direction of nut 2 flange arrangements, between rear-end Biserial cylindrical roller bearing 9 and nut 2, pack spacer 20 into subsequently, pack packing ring 21 in spacer 20 outsides, finally screw in and regulate the prestretching force of gear mechanism to reach good rigidity by two groups of locking nuts 22, on the fit system of gear mechanism and nut 2 and nut seat 3, according to the manufacturability of assembling, between Biserial cylindrical roller bearing 9 inner rings and spacer 20, select transition fit, between spacer 20 and nut 2, carry out Spielpassung, must strict control gap amount.Biserial cylindrical roller bearing 9 outer rings and nut seat 3 are realized Spielpassung, strict control gap amount simultaneously, and the selection of above-mentioned fit system, has greatly reduced difficulty of processing in the rational while that has ensured technique.Afterwards two belt pulleys 15 are contained in respectively in the flange arrangement end face of nut 2 and the rotating shaft of drive motor 4, belt pulley 15 on nut 2 flange arrangements adopts hexagon socket cap head screw 23 fastening, puts transmission belt 16 and complete installment work on two belt pulleys 15.
In working procedure, drive motor 4 rotates around leading screw 1 by actuator drives nut 2, under the effect of spirality raceway 5 and ball 7, nut 2 can move vertically, moving axially by gear mechanism of nut 2 drives nut seat 3 motion vertically together, worktable 8, together with nut seat 3 integrated connections, thereby is followed nut seat 3 and is realized and moving axially together.The utility model can be by extending leading screw 1 and the textural associations of organizing nuts 2 and nut seat 3 being installed more on leading screw 1 and being realized multiple worktable 8 by each self-driven at the same time or separately, its motion mutual noninterference.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model; above-mentioned mode of execution and specification are principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by claims and equivalent thereof.
Claims (5)
1. the main driving ball screw pair of nut, it is characterized in that, include leading screw (1), nut (2), nut seat (3), gear mechanism and drive motor (4), described leading screw (1) two ends are fixed on bed piece, nut (2) is nested on leading screw (1), be provided with the spirality raceway (5) of mutual correspondence along leading screw (1) outer wall and nut (2) inwall, on raceway (5), be provided with corresponding reflux (6), in raceway (5) and reflux (6), be provided with can circulating rolling ball (7), described nut seat (3) by gear mechanism nested be arranged on nut (2) thus upper nut (2) can along the circumferential direction be rotated freely with respect to nut seat (3), the front end of nut (2) and nut seat (3) is respectively arranged with corresponding flange arrangement, the flange arrangement of nut (2) front end is connected with the rotating shaft of drive motor (4) by transmission device, nut seat (3) entirety links together with worktable (8).
2. the main driving ball screw pair of a kind of nut as claimed in claim 1, it is characterized in that, described gear mechanism adopts two groups of Biserial cylindrical roller bearings (9) and end face cylindrical roller thrust bearing (10) to coordinate and installs, wherein one group of gear mechanism is arranged between nut seat (3) and the flange arrangement of nut (2) front end, and another group gear mechanism is arranged between nut seat (3) and the tail end of nut (2).
3. the main driving ball screw pair of a kind of nut as claimed in claim 1, it is characterized in that, described leading screw (1) is provided with dust ring (17) with nut (2) two ends junction point, and dust ring (17) prevents from by screw (18) is fastening.
4. the main driving ball screw pair of a kind of nut as claimed in claim 1, it is characterized in that, the flange arrangement place on described nut seat (3) top is provided with the lubricant oil interface (11) perpendicular to axis, in nut seat chamber, be provided with a main oil gallery (12), on main oil gallery, (12) are provided with three branched bottoms (13), wherein two branched bottoms (13) lead to gear mechanism, and another branched bottom leads to nut (2) inside.
5. the main driving ball screw pair of a kind of nut as claimed in claim 1, is characterized in that, described transmission device be pulley gear, sprocket transmission device or gear drive one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119699.9U CN203756897U (en) | 2014-03-18 | 2014-03-18 | Nut main-driving ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119699.9U CN203756897U (en) | 2014-03-18 | 2014-03-18 | Nut main-driving ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756897U true CN203756897U (en) | 2014-08-06 |
Family
ID=51252177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119699.9U Expired - Fee Related CN203756897U (en) | 2014-03-18 | 2014-03-18 | Nut main-driving ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756897U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939551A (en) * | 2014-03-18 | 2014-07-23 | 陕西汉江机床有限公司 | Ball screw pair with nut main driving |
| CN110594379A (en) * | 2019-08-07 | 2019-12-20 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
| CN117344616A (en) * | 2023-12-05 | 2024-01-05 | 新乡县祥宏建筑材料有限公司 | Dustproof road body cutting device for road maintenance |
-
2014
- 2014-03-18 CN CN201420119699.9U patent/CN203756897U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939551A (en) * | 2014-03-18 | 2014-07-23 | 陕西汉江机床有限公司 | Ball screw pair with nut main driving |
| CN110594379A (en) * | 2019-08-07 | 2019-12-20 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
| CN110594379B (en) * | 2019-08-07 | 2021-08-31 | 山东大学 | Nut driving type hydrostatic lead screw transmission pair and machine tool |
| CN117344616A (en) * | 2023-12-05 | 2024-01-05 | 新乡县祥宏建筑材料有限公司 | Dustproof road body cutting device for road maintenance |
| CN117344616B (en) * | 2023-12-05 | 2024-02-27 | 新乡县祥宏建筑材料有限公司 | Dustproof road body cutting device for road maintenance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20210318 |