CN1190609C - Ball screw possessing cooling device - Google Patents
Ball screw possessing cooling device Download PDFInfo
- Publication number
- CN1190609C CN1190609C CNB011345063A CN01134506A CN1190609C CN 1190609 C CN1190609 C CN 1190609C CN B011345063 A CNB011345063 A CN B011345063A CN 01134506 A CN01134506 A CN 01134506A CN 1190609 C CN1190609 C CN 1190609C
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- ball screw
- cooling unit
- tool cooling
- 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 - Lifetime
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0497—Screw mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention mainly provides a rolling ball screw with a cooling device, which mainly comprises a screw shaft and a screw nut engaged with the outer thread of the screw shaft, wherein the outer side of the screw nut is provided with an outer cover, and an accommodation part is formed between the outer cover and the screw nut. Cooling agent can flow across the accommodation part in order to cool the screw nut of the rolling ball screw. Then the screw nut of the rolling ball screw is used for cooling the rolling ball screw in work. Thus, the rolling ball screw is provided with an excellent cooling effect.
Description
Technical field
The invention relates to a kind of ball screw of tool cooling unit, refer to a kind of ball screw of tool high efficiency cooling unit especially.
Background technique
Press, the cooling unit of existing ball screw is as shown in Figure 1, mainly is that the axial part in the screw axis 10 of ball screw provides a through hole 11, passes through cooling liquid by through hole 11 streams, to reduce the temperature that screw axis 10 is transferred to from nut 12 and circulation steel ball; Only, allly be familiar with this operator and all know, the operation principles of ball screw, mainly be on nut 12, to connect to establish workpiece or worktable to be processed arbitrarily, by the rotation of screw axis 10, see through the screw thread of screw axis 10 and the structural design of nut 12 engagements again, order about the outer radius displacement of nut 12 in screw axis 10, drive workpiece or worktable relatively, to process start.Because of nut 12 must bear load comprehensively, and screw axis 10 is not subjected to that nut 12 shrouds is exposed to position in the atmosphere, be the several times of nut 12 length, so, with regard to actual ball screw operation, screw axis 10 is by exposed position, and the air cooling effect that is produced in screw axis 10 rotary courses promptly surpasses the cooling effect of nut 12; Pass through the cooling liquid heat radiation so through hole 11 incoming flows are set again on screw axis 10, but on nut 12, do not add the design of cooling mechanism, real in putting the cart before the horse.
Especially, nut 12 directly contacts with the circulation steel ball again because of volume is little, and the external force load annotates on nut 12 entirely, so nut 12 on the throne moving past in the journey, it is inner to contact part with screw axis 10, is the highest position of temperature; Therefore existing structure sees through the design of passing through cooling liquid in through hole 11 incoming flows in screw axis 10 axle center, desires to reach indirectly the effect of cooling nut 12, and effect is limited really.What is more, because the suitable length of screw axis 10 tools, so the processing of through hole 11 is difficult relatively, precision and required cost improve relatively, and the concentricity of through hole 11 and be difficult for requirement, and the off-centre when causing screw axis 10 rotations is rocked; Add the screw axis 10 inner skies of washing in a pan, in the process that drives nut 12 displacements, if the external force that nut 12 is carried is excessive, then the structural strength of screw axis 10 also can be tested.So it is required that the cooling unit of existing ball screw does not meet modern industry in fact.Can reach the structure of cooling off benefit really and rapidly and how to design one, promptly be the direction that relevant industry is discussed.
This shows that the above-mentioned article of commonly using still have many disappearances, the real non-one kindhearted instruction of establishing, and demand urgently being improved.
Every shortcoming that this case inventor derives in view of the above-mentioned ball screw of commonly using the tool cooling unit is urgently to think to be improved innovation, and after concentrating on studies through taking great pains to attain one's goal for many years, and successfully the ball screw of this part tool cooling unit is finished in research and development finally.
Summary of the invention
Main purpose of the present invention is the ball screw that is to provide a kind of tool cooling unit, and it has very high cooling effectiveness.
The ball screw of a kind of tool cooling unit of the present invention mainly comprises: a screw axis has spiral helicine screw thread ditch on its external diameter; An and nut that is hollow shape, this nut is sleeved on screw axis and has the screw thread ditch outside partly, on the internal diameter of nut and the position of the screw thread ditch of aforementioned screw axis cooperation is provided with another screw thread ditch, and most balls, remain between the screw thread ditch of the screw thread ditch of screw axis and nut, make between nut and screw axis and can be rotated mutually; And add again via the outside outer cover is set, make to form an accommodating part between this outer cover and nut, utilize this accommodating part freezing mixture of flowing through, to reduce the temperature of nut at nut.
Wherein this leakproof assembly is an O type ring.
Wherein this nut is being provided with the portion of cutting of escaping near jacket side.
Wherein this is escaped the portion of cutting and is the tangent plane shape.
Wherein this is escaped the portion of cutting and is the grooving shape.
Wherein be provided with adapter in this accommodating part.
Wherein be filled with heat-conducting glue between this adapter and nut.
Wherein this nut is provided with coolant hole and pipe fitting, and this coolant hole and pipe fitting can be done the channel that freezing mixture is flowed through.
Description of drawings
In order further to understand feature of the present invention and technology contents, see also following relevant preferred embodiment explanation of the present invention and accompanying drawing, however appended graphic only for reference and explanation usefulness, and be not to be used for the present invention is done any restriction, wherein:
Fig. 1 is the cooling unit schematic representation of existing ball screw;
Fig. 2 is the schematic representation of an example of the ball screw of tool cooling unit of the present invention;
Fig. 3 is another routine schematic representation of ball screw of tool cooling unit of the present invention;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the schematic representation of ball screw the 3rd example of tool cooling unit of the present invention.
Embodiment
Fig. 2 is the schematic representation of an example of the ball screw of tool cooling unit of the present invention, this embodiment mainly comprises a screw axis 20 and nut combination 30, then be provided with most balls 40 between screw axis 20 and nut combination 30, so-called ball 40 comprises steel ball, ceramic bead or plastic bead etc.; The outside of screw axis 20 is provided with spiral helicine screw thread ditch 201, nut 31 is hollow shape, be sleeved on the outside of screw axis 20, the inboard of nut 31 and screw thread ditch 201 places of matching are provided with and screw thread ditch 201 corresponding screw thread ditches 311,311 in screw thread ditch 201 and screw thread ditch are provided with most balls 40, and ball 40 makes nut combination 30 and 20 of screw axiss be able to mutual rotation.Coat an outer cover 32 in the outside of nut 31,31 on outer cover 32 and nut form an accommodating part 33, can flow through for the good freezing mixture of heat-conducting effect in accommodating part 33, to reduce the temperature of nut 31.For avoiding the freezing mixture in the accommodating part 33 to leak outside, the assembly that leakproof can be set at outer cover 32 and 31 on nut leaks outside to avoid freezing mixture, uses two O type rings 34 and 35 as the leakproof assembly in the present embodiment.Be provided with coolant hole 312 and 313 on nut 31, respectively connect an oil connection 36 and 37 on the coolant hole 312 and 313, oil connection 36 and 37 respectively connect a pipe fitting 38 and 39, and pipe fitting 38 and 39 can be flexible pipe or various metal tube.Freezing mixture by pipe fitting 38 through oil connection 36.Coolant hole 312 flows in the accommodating part 33, after in accommodating part 33, absorbing the heat of nut 31, freezing mixture is taken away nut 31 heats via coolant hole 313, oil connection 37 and pipe fitting 39, the nut 31 of cooling ball screw, and make the ball screw of tool cooling unit of the present invention that good cooling effect be arranged.
Fig. 3 is another embodiment of the ball screw of tool cooling unit of the present invention, Fig. 4 then is the A-A sectional view of Fig. 3, for increasing the heat exchange effect between accommodating part 33 and freezing mixture, the zone that the outside of nut 31 can be able to not influenced nut 31 ball burden functionals and ball-recirculation function is excised, promptly form the portion of cutting 314 of escaping as shown in Fig. 3 and Fig. 4, with the space that increases accommodating part 33 and the area of contact of freezing mixture: and since the wall thickness of nut 31 reduce, therefore reduce the thermal resistance of 33 of nut 31 and accommodating parts, promote cooling effect.The aforesaid portion of cutting 314 of escaping can be kenels such as grooving or tangent plane, and the mode of grooving also can be processed around nut 31 external diameters except that being parallel to the escaping the butt formula of screw axis 20 axis directions.
Again, accommodating part 33 of the present invention has various variability on the implementation, and Fig. 5 is an another embodiment of the present invention, and this embodiment is except that in the arranged outside accommodating part 33 of nut 31, and in accommodating part 33, be provided with and take over 50, take over 50 can be as shown in Figure 5 around the outside of nut 31.Or be parallel to spiral shell, bar axle 20 axis directions and on the external diameter of nut 31, twine back and forth, freezing mixture is flowed into by coolant hole 312 and takes over circulation in 50, flow out by coolant hole 313 again after absorbing heat, because the design's freezing mixture does not directly contact with overcoat 32, so can avoid the excessive puzzlement of freezing mixture, this moment is not owing to there being the excessive problem of freezing mixture, so do not need to use leakproof assemblies such as O type ring 34 and 35; But because of take over 50 and the thermal resistance of 31 on nut increase, cooling effect is relatively poor.For reducing the thermal resistance of 31 on adapter 50 and nut.In adapter 50 and 31 fillings of nut heat-conducting glue is effective improvement mode.
The ball screw of tool cooling unit provided by the present invention, with aforementioned case and other prior art quoted as proof mutually relatively the time, the present invention adds the high cooling efficiency device on the nut 31 that places ball screw, can directly cool off the nut 31 of ball screw, effectively reduce the temperature rise of ball screw in the using process.
In addition, because outer cover 32 and nut 31 are assemblies independently mutually, so design and group are upright all quite easy, and adapter of the present invention 50 or outer cover 32 all can be plug-in design, and cooling unit and nut 31 are independent in design, combined and instant and the reliability height is implemented conveniently.
Aforesaid specific embodiment is to be used for describing in detail purpose of the present invention, feature and effect, for being familiar with this type of skill personage, may doing partly change and modification to this specific embodiment according to the above description, and not detach spiritual category of the present invention.
Claims (8)
1. the ball screw of a tool cooling unit comprises:
One screw axis has spiral helicine screw thread ditch on its external diameter;
One nut is hollow shape, is sleeved on aforementioned screw axis and has the screw thread ditch outside partly, and on the internal diameter of nut and the position of the screw thread ditch of aforementioned screw axis cooperation is provided with another screw thread ditch; And most balls, remain between the screw thread ditch of the screw thread ditch of aforementioned screw axis and nut, make between nut and screw axis and can be rotated mutually;
It is characterized in that: the arranged outside of aforementioned nut has an outer cover, makes to form an accommodating part between outer cover and nut, and can flow through for freezing mixture in this accommodating part, to reduce the temperature of nut.
2. by the ball screw of the described tool cooling unit of claim 1, it is characterized in that wherein this leakproof assembly is an O type ring.
3. by the ball screw of the described tool cooling unit of claim 1, it is characterized in that wherein this nut is being provided with the portion of cutting of escaping near jacket side.
4. by the ball screw of the described tool cooling unit of claim 3, it is characterized in that wherein this is escaped the portion of cutting and is the tangent plane shape.
5. by the ball screw of the described tool cooling unit of claim 3, it is characterized in that wherein this is escaped the portion of cutting and is the grooving shape.
6. by the ball screw of the described tool cooling unit of claim 1, it is characterized in that, wherein be provided with adapter in this accommodating part.
7. by the ball screw of the described tool cooling unit of claim 6, it is characterized in that, wherein be filled with heat-conducting glue between this adapter and nut.
8. by the ball screw of the described tool cooling unit of claim 1, it is characterized in that wherein this nut is provided with coolant hole and pipe fitting, this coolant hole and pipe fitting can be done the channel that freezing mixture is flowed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345063A CN1190609C (en) | 2001-10-31 | 2001-10-31 | Ball screw possessing cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011345063A CN1190609C (en) | 2001-10-31 | 2001-10-31 | Ball screw possessing cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415872A CN1415872A (en) | 2003-05-07 |
| CN1190609C true CN1190609C (en) | 2005-02-23 |
Family
ID=4672548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011345063A Expired - Lifetime CN1190609C (en) | 2001-10-31 | 2001-10-31 | Ball screw possessing cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1190609C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949437A (en) * | 2010-10-14 | 2011-01-19 | 姜洪奎 | Self-cooling ball screw assembly |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782139B (en) * | 2009-01-20 | 2012-08-22 | 全球传动科技股份有限公司 | Linear transmission system |
| CN102996741B (en) * | 2011-09-16 | 2015-07-29 | 上银科技股份有限公司 | The transmission module of tool cooling unit |
| CN102788128B (en) * | 2012-07-06 | 2015-07-22 | 宋健 | High-speed ball screw pair with automatically adjustable pre-tightening force |
| KR101905087B1 (en) * | 2012-10-16 | 2018-10-08 | 두산공작기계 주식회사 | Heat dislocation prevention device of machine tool having ball screw and method thereof |
| CN106931122B (en) * | 2015-12-30 | 2020-02-14 | 上银科技股份有限公司 | Double-nut cooling type ball screw |
| CN109488737B (en) * | 2017-09-12 | 2020-07-17 | 上银科技股份有限公司 | Ball screw with cooling flow passage |
-
2001
- 2001-10-31 CN CNB011345063A patent/CN1190609C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949437A (en) * | 2010-10-14 | 2011-01-19 | 姜洪奎 | Self-cooling ball screw assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1415872A (en) | 2003-05-07 |
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Granted publication date: 20050223 |
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| CX01 | Expiry of patent term |