CN202045531U - Heavy-load static-pressure screw nut device - Google Patents
Heavy-load static-pressure screw nut device Download PDFInfo
- Publication number
- CN202045531U CN202045531U CN 201120131084 CN201120131084U CN202045531U CN 202045531 U CN202045531 U CN 202045531U CN 201120131084 CN201120131084 CN 201120131084 CN 201120131084 U CN201120131084 U CN 201120131084U CN 202045531 U CN202045531 U CN 202045531U
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- static
- screw nut
- static pressure
- pressure screw
- nut
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- Expired - Fee Related
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Abstract
The utility model discloses a heavy-load static-pressure screw nut device which comprises a screw nut seat, a static-pressure screw nut, a limit switch, a link stopper, a check nut and a sawtooth screw, wherein the static-pressure screw nut is embedded in a centering inner hole of the screw nut seat; a shaft shoulder at the bottom end of the static-pressure screw nut is fixed on the lower end face of the screw nut seat; threaded teeth on the static-pressure screw nut are arranged in a sawtooth shape at a closed angle; and the sawtooth screw is arranged in the static-pressure screw nut and is in threaded fit with the static-pressure screw nut. The check nut is arranged at the lower part of the static-pressure screw nut; a sinking hole of the check nut is sheathed on the outer cylindrical surface of the lower part of the static-pressure screw nut; the link stopper is arranged on the side surface of the check nut; the limit switch is arranged on the side surface of the lower part of the screw nut seat; a static-pressure oil chamber is formed on threaded teeth of the static-pressure screw nut; an oil inlet pipe and the lower threaded surface are arranged in parallel; and an oil outlet hole is communicated with the static-pressure oil chamber. The heavy-load static-pressure screw nut device has large load bearing capability, high reliability, very small friction factor and high drive efficiency, and is particularly suitable for a crossbeam lifting drive structure of a heavy single-column moving vertical lathe.
Description
Technical field
The utility model relates to the heavily loaded static pressure feed screw nut device that uses on a kind of lathe, belongs to the Machining Technology field.
Background technology
The weight of domestic newly-designed heavy its crossbeam of single-column movement vertical type lathe and knife rest is all big especially at present, thereby also very big to crossbeam elevating screw demands for bearing capacity.Existing feed screw nut all adopts lead screw nut or two kinds of forms of ball-screw nut usually, it is big that the lead screw nut structure exists coefficient of friction, transmission efficiency is low, the shortcoming that caloric value is big, and the ball-screw nut structure is owing to be subject to processing the restriction of ability, be difficult to again make large diameter ball-screw nut, so the structure of these two kinds of leading screws all is difficult to satisfy the big demands for bearing capacity of heavy machine tool.
Summary of the invention
In order to overcome above-mentioned deficiency, the purpose of this utility model is to provide a kind of novel load-carrying static pressure feed screw nut device, and this design has the advantages that bearing capacity is big, coefficient of friction is very little, transmission efficiency is high.
The technical solution of the utility model is: this device is made of nut seat, static pressure screw, limit switch, collision block, lock nut, zigzag leading screw; The static pressure screw is set in the centering endoporus of nut seat, and the shaft shoulder face of its bottom is fixed on the lower surface of nut seat.Ridge indentation on the static pressure screw is arranged, and the angle between last flank and following flank is an acute angle, the zigzag leading screw be contained in the static pressure screw and with static pressure screw threaded engagement.In static pressure screw bottom lock nut is housed, the counterbore of lock nut is enclosed within on the external cylindrical surface of static pressure screw bottom.In the lock nut side collision block is housed, on the nut seat lower side limit switch is housed, the limit switch contact is apart from the preferred 2mm of distance that the collision block upper surface is installed.Have the static pressure grease chamber on the ridge of static pressure screw, oil inlet pipe be arranged in parallel with following flank, and oil outlet communicates with the static pressure grease chamber.
The beneficial effects of the utility model are: the design's bearing load ability is big, reliability is high, coefficient of friction is very little, transmission efficiency is high, and this structure is particularly useful in the heavy single-column movement vertical type lathe crossbeam lifting drive mechanism.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1.
Number in the figure:
1, nut seat 2, static pressure screw 3, limit switch 4, collision block
5, lock nut 6, zigzag leading screw 7, static pressure grease chamber 8, last flank
9, following flank 10, fuel feed pump 11, oil outlet.
The specific embodiment
As shown in Figure 1, the design comprise nut seat 1, static pressure screw 2, limit switch 3, collision block 4, lock nut 5, zigzag leading screw 6, static pressure grease chamber 7, above the ridge 8, below the ridge 9, fuel feed hole 10.Static pressure screw 2 is set in the nut seat 1 centering endoporus, and the shaft shoulder face of its bottom is fixed on nut seat 1 lower surface.Ridge indentation on the static pressure screw 2 is arranged, and the angle that last flank 8 and following flank are 9 is an acute angle, zigzag leading screw 6 be contained in the static pressure screw 2 and with static pressure screw 2 threaded engagement.In static pressure screw 2 bottoms lock nut 5 is housed, the counterbore of lock nut 5 is enclosed within on the static pressure screw 2 bottom external cylindrical surfaces.In lock nut 5 sides collision block 4 is housed, on nut seat 1 lower side limit switch 3 is housed, limit switch 3 contacts are 2mm apart from the distance that collision block 4 upper surfaces are installed.Have static pressure grease chamber 7 on flank 8 on the static pressure screw 2, fuel feed pump 10 be arranged in parallel with following flank 9, and oil outlet 11 communicates with static pressure grease chamber 7.
The course of work of static pressure screw-nut structure: at first, high-pressure and hydraulic oil enters static pressure grease chamber 7 by fuel feed hole 10, the pressure of hydraulic oil acts on the last flank 8 of zigzag leading screw 6 and static pressure screw 2, it is downward that zigzag leading screw 6 is subjected to the pressure direction of hydraulic oil, the pressure direction that static pressure screw 2 is subjected to hydraulic oil makes progress, static pressure screw 2 moves upward by the shaft shoulder face promotion nut seat 1 of its underpart, zigzag leading screw 6 rotates but does not move axially, static pressure screw 2 is subjected to driving nut seat 1 and lock nut 5 simultaneously behind the reaction force of zigzag leading screw 6, axial direction along zigzag leading screw 6 moves up and down, because 7 of static pressure grease chambeies open on flank 8 on the static pressure screw 2, therefore, static pressure screw 2 can only bear unidirectional load.After static pressure screw 2 weares and teares owing to accidental cause, lock nut 5 in static pressure screw 2 bottoms moves upward, and drive collision block fixed thereon 4 and move upward together, when collision block 4 moves upward above 2mm, collision block 4 triggers the contact of limit switch 3, limit switch 3 sends alarm signal and feeds back to electrical system, and electrical system control lathe quits work.
Claims (2)
1. heavily loaded static pressure feed screw nut device is characterized in that: this device is made of nut seat (1), static pressure screw (2), limit switch (3), collision block (4), lock nut (5) and zigzag leading screw (6); Static pressure screw (2) is set in the interior internal point of nut seat (1), and the shaft shoulder face of its bottom is fixed on the lower surface of nut seat (1); Ridge indentation on the static pressure screw (2) is arranged, and the angle between last flank (8) and following flank (9) is an acute angle, zigzag leading screw (6) be contained in the static pressure screw (2) and with static pressure screw (2) threaded engagement; In static pressure screw (2) bottom lock nut (5) is housed, the counterbore of lock nut (5) is enclosed within on the external cylindrical surface of static pressure screw (2) bottom; In lock nut (5) side collision block (4) is housed, on nut seat (1) lower side, limit switch (3) is housed, on the last flank (8) of static pressure screw (2), have static pressure grease chamber (7), fuel feed pump (10) be arranged in parallel with following flank (9), and oil outlet (11) communicates with static pressure grease chamber (7).
2. heavily loaded static pressure feed screw nut device according to claim 1 is characterized in that: described limit switch (3) contact is 2mm apart from the distance of collision block (4) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120131084 CN202045531U (en) | 2011-04-29 | 2011-04-29 | Heavy-load static-pressure screw nut device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120131084 CN202045531U (en) | 2011-04-29 | 2011-04-29 | Heavy-load static-pressure screw nut device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202045531U true CN202045531U (en) | 2011-11-23 |
Family
ID=44985855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120131084 Expired - Fee Related CN202045531U (en) | 2011-04-29 | 2011-04-29 | Heavy-load static-pressure screw nut device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202045531U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308201A (en) * | 2014-10-10 | 2015-01-28 | 荣成锻压机床有限公司 | Heavy vertical lathe crossbeam lifting safety protection device |
| CN107932184A (en) * | 2017-12-27 | 2018-04-20 | 齐重数控装备股份有限公司 | A kind of lifting nut of sufficient lubrication |
| CN108788878A (en) * | 2018-05-04 | 2018-11-13 | 青岛科技大学 | A kind of driving static-pressure lead screw pair of nut |
| CN109623475A (en) * | 2019-01-14 | 2019-04-16 | 江苏大卫精工科技有限公司 | A kind of machining center running part anticollision mechanism |
| CN110181295A (en) * | 2019-06-25 | 2019-08-30 | 江苏集萃精凯高端装备技术有限公司 | A kind of high-precision vertical axes feeding elevating mechanism |
| CN110605658A (en) * | 2019-10-23 | 2019-12-24 | 机械科学研究总院海西（福建）分院有限公司 | Workbench transmission structure of ultra-precise aspheric surface forming grinder |
| CN110948274A (en) * | 2019-12-16 | 2020-04-03 | 齐重数控装备股份有限公司 | Screw structure with hydraulic protection function |
| CN111300154A (en) * | 2019-11-30 | 2020-06-19 | 宁夏共享精密加工有限公司 | Screw mechanism for lifting graded positioning cross beam |
| WO2023169413A1 (en) * | 2022-03-09 | 2023-09-14 | 芜湖伯特利汽车安全系统股份有限公司 | Linear driving mechanism |
-
2011
- 2011-04-29 CN CN 201120131084 patent/CN202045531U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308201A (en) * | 2014-10-10 | 2015-01-28 | 荣成锻压机床有限公司 | Heavy vertical lathe crossbeam lifting safety protection device |
| CN107932184A (en) * | 2017-12-27 | 2018-04-20 | 齐重数控装备股份有限公司 | A kind of lifting nut of sufficient lubrication |
| CN108788878A (en) * | 2018-05-04 | 2018-11-13 | 青岛科技大学 | A kind of driving static-pressure lead screw pair of nut |
| CN108788878B (en) * | 2018-05-04 | 2019-07-16 | 青岛科技大学 | A kind of driving static-pressure lead screw pair of nut |
| CN109623475A (en) * | 2019-01-14 | 2019-04-16 | 江苏大卫精工科技有限公司 | A kind of machining center running part anticollision mechanism |
| CN110181295A (en) * | 2019-06-25 | 2019-08-30 | 江苏集萃精凯高端装备技术有限公司 | A kind of high-precision vertical axes feeding elevating mechanism |
| CN110181295B (en) * | 2019-06-25 | 2023-08-08 | 江苏集萃精凯高端装备技术有限公司 | High-precision vertical shaft feeding lifting mechanism |
| CN110605658A (en) * | 2019-10-23 | 2019-12-24 | 机械科学研究总院海西（福建）分院有限公司 | Workbench transmission structure of ultra-precise aspheric surface forming grinder |
| CN111300154A (en) * | 2019-11-30 | 2020-06-19 | 宁夏共享精密加工有限公司 | Screw mechanism for lifting graded positioning cross beam |
| CN110948274A (en) * | 2019-12-16 | 2020-04-03 | 齐重数控装备股份有限公司 | Screw structure with hydraulic protection function |
| WO2023169413A1 (en) * | 2022-03-09 | 2023-09-14 | 芜湖伯特利汽车安全系统股份有限公司 | Linear driving mechanism |
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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 |
Granted publication date: 20111123 Termination date: 20170429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |