CN201687911U - Ball screw pair with double plugboard nuts - Google Patents
Ball screw pair with double plugboard nuts Download PDFInfo
- Publication number
- CN201687911U CN201687911U CN2009202455561U CN200920245556U CN201687911U CN 201687911 U CN201687911 U CN 201687911U CN 2009202455561 U CN2009202455561 U CN 2009202455561U CN 200920245556 U CN200920245556 U CN 200920245556U CN 201687911 U CN201687911 U CN 201687911U
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- CN
- China
- Prior art keywords
- ball
- nuts
- nut
- groove
- plugboard
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
- F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
- F16H25/2223—Cross over deflectors between adjacent thread turns, e.g. S-form deflectors connecting neighbouring threads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The utility model relates to a ball screw pair with double plugboard nuts, which is composed of a lead screw, nuts, ball screw steel balls and ball return devices; circles of thread raceway grooves are arranged on the inner side of the nuts and the outer side of the lead screw side by side in double-end manner, ball screw steel balls are mounted in the steel ball spiral raceways formed by the lead screw and the thread raceway grooves, two plugboard ball return devices with steel ball return slots are respectively mounted on both sides of the nuts, both ends of the steel ball return slots of one plugboard ball return device are respectively communicated with the first head thread slot and the second head thread slot of the corresponding circles of thread raceway grooves of the nuts, and both ends of the steel ball return slots of the other plugboard ball return device are respectively communicated with the second head thread slot and the first head thread slot of the corresponding circles of thread raceway grooves of the nuts. The ball screw pair with double plugboard nuts has reasonable structure, reliable performance, great bearing force, high transmission efficiency, can reach the moving speed of more than 100m/min and is an ideal transmission element for high-speed machine tool.
Description
Technical field
The utility model belongs to the mechanical transmission component technical field, relates to a kind of ball screw pair that is used for high-speed processing machine tool.
Background technique
Along with the development of numerical control machine tool technique and the appearance of a large amount of high-speed processing machine tools, more and more higher to the requirement of high-speed processing machine tool transmission part ball screw pair, there is corresponding high speed ball screw pair supporting with it.In the prior art, realize that the high speed transmission of ball screw pair mainly contains two kinds of approach: the one, the helical pitch of increase ball screw, the 2nd, the rotating speed of raising leading screw, but but these two kinds of approach are simultaneously two difficult points in the ball screw pair manufacturing.Helical pitch increases, and the condition lower nut of same load must extend, and just helical pitch doubles, and nut length must double, but the nut helical pitch is big more, and the lead angle of nut is just big more, and nut is also just difficult more when grinding.With regard to another kind of approach, the rotating speed of leading screw is subjected to DN value (leading screw outer diameter D * rotational speed N) restriction, rotating speed can not unrestrictedly improve (also being subjected to the restriction of leading screw self limit speed for long lead screw), and ball screw pair DN value is subjected to the influence of nut structure simultaneously, also can not be too high, generally all adopt outer circulation back device structure for great lead ball lead screw pair at present, transmission efficiency is low, the DN value can only arrive about 70000, so the nut rotating speed improves limited.
The model utility content
The purpose of this utility model is the problem that prior art exists is solved, and then provides a kind of rational in infrastructure, reliable performance, bearing capacity big, the transmission efficiency height, is suitable for the ball screw pair with two plate nuts that uses at high-speed processing machine tool.
The technical solution that adopts is so for achieving the above object: the ball screw pair with two plate nuts that is provided is by leading screw, nut, ball steel ball and ball-returning device are formed, nut sleeve is contained on the leading screw, in the outside of the inboard of nut and leading screw respectively by double end side by side mode be provided with multi-turn screw thread raceway groove, the ball steel ball is contained in the steel ball spiral rolling track of being made up of the screw thread raceway groove of leading screw and nut, in the both sides of nut a plate ball-returning device is installed respectively, on the inwall of plate ball-returning device, be provided with multiple tracks steel ball bead returning groove, the two ends of each steel ball bead returning groove are communicated with the first head thread groove and the second head thread groove of a correspondence ring screw thread raceway groove on the nut respectively on one of them plate ball-returning device, and the two ends of each steel ball bead returning groove are communicated with the second head thread groove and the first head thread groove of a correspondence ring screw thread raceway groove on the nut respectively on another plate ball-returning device.
The improvement that the utility model is made prior art is to make former single screw thread into double thread screw, ball screw pair after the improvement is under the situation that nut length does not increase, though every head thread raceway load number of turns has been lacked, two raceway carries jointly, and its bearing capacity can not reduce; The pearl structure of returning nut of the present utility model adopts two plate back structures, this structure belongs to inner circulation structure, has the high advantage of inner circulation structure transmission efficiency, its DN value can reach more than 120000, so promptly makes the rotational speed of nut be greatly improved, and mobile (transmission) speed of ball screw pair can reach more than 100 meters/minute, the nut structure compactness, installing space is little, and the reliability height is the desirable transmission component of high-speed processing machine tool.
Description of drawings
Fig. 1 is the cross-sectional to structural representation of a specific embodiment of the utility model.
Fig. 2 is the deployed configuration schematic representation for nut.
The title of each label is respectively among the figure: 1-leading screw, 2-nut, 3-ball steel ball, 41-plate ball-returning device, 42-plate ball-returning device, the I-first head thread groove, the II-second head thread groove.
Embodiment
Referring to accompanying drawing, ball screw pair described in the utility model is made up of leading screw 1, nut 2, ball steel ball 3 and left and right two plate ball-returning devices 41,42.Nut 2 is sleeved on the leading screw 1, in the outside of the inboard of nut 2 and leading screw 1 respectively by double end side by side mode be provided with multi-turn screw thread raceway groove, ball steel ball 3 is contained in the steel ball spiral rolling track of being made up of the screw thread raceway groove of leading screw 1 and nut 2.Both sides at nut 2 respectively are equipped with a plate ball-returning device 41,42 by 180 ° of directions, like this symmetry install be for nut more steady in the running, the axially loaded equalization.On the inwall of plate ball-returning device, be provided with multiple tracks steel ball bead returning groove, its set-up mode as shown in Figure 2, be that the entrance point of each steel ball bead returning groove on the plate ball-returning device 41 and outlet end are communicated with the second head thread groove II and the first head thread groove I of a corresponding circle screw thread raceway groove on the nut 2 respectively, the entrance point of each steel ball bead returning groove and outlet end then are communicated with the first head thread groove I and the second head thread groove II of a corresponding circle screw thread raceway groove on the nut 2 respectively on the plate ball-returning device 42.
The back principle is as shown in Figure 2 in nut 2 for ball steel ball 3, in the nut unfolded drawing, from the right side, a left side, steel ball 3 is earlier through the second head thread groove II, enter the first head thread groove I through plate ball-returning device 41, return the second head thread groove II from the first head thread groove I again through plate ball-returning device 42, the rolling path of whole like this steel ball has just formed a circulation.
Claims (1)
1. ball screw pair with two plate nuts, by leading screw (1), nut (2), ball steel ball (3) and ball-returning device are formed, it is characterized in that nut (2) is sleeved on the leading screw (1), in the outside of the inboard of nut (2) and leading screw (1) respectively by double end side by side mode be provided with multi-turn screw thread raceway groove, ball steel ball (3) is contained in the steel ball spiral rolling track of being made up of the screw thread raceway groove of leading screw (1) and nut (2), in the both sides of nut (2) a plate ball-returning device (41 is installed respectively, 42), on the inwall of plate ball-returning device, be provided with multiple tracks steel ball bead returning groove, the two ends that one of them plate ball-returning device (41) is gone up each steel ball bead returning groove are communicated with the first head thread groove (I) and the second head thread groove (II) of the last correspondence ring screw thread raceway groove of nut (2) respectively, and the two ends that another plate ball-returning device (42) is gone up each steel ball bead returning groove are communicated with the second head thread groove (II) and the first head thread groove (I) of the last correspondence ring screw thread raceway groove of nut (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455561U CN201687911U (en) | 2009-12-01 | 2009-12-01 | Ball screw pair with double plugboard nuts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455561U CN201687911U (en) | 2009-12-01 | 2009-12-01 | Ball screw pair with double plugboard nuts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687911U true CN201687911U (en) | 2010-12-29 |
Family
ID=43376191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202455561U Expired - Fee Related CN201687911U (en) | 2009-12-01 | 2009-12-01 | Ball screw pair with double plugboard nuts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109131534A (en) * | 2018-10-11 | 2019-01-04 | 杭州世宝汽车方向机有限公司 | A kind of recirculating ball-type steering |
-
2009
- 2009-12-01 CN CN2009202455561U patent/CN201687911U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109131534A (en) * | 2018-10-11 | 2019-01-04 | 杭州世宝汽车方向机有限公司 | A kind of recirculating ball-type steering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20131201 |