CN101782139B - Linear transmission system - Google Patents
Linear transmission system Download PDFInfo
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- CN101782139B CN101782139B CN2009100055554A CN200910005555A CN101782139B CN 101782139 B CN101782139 B CN 101782139B CN 2009100055554 A CN2009100055554 A CN 2009100055554A CN 200910005555 A CN200910005555 A CN 200910005555A CN 101782139 B CN101782139 B CN 101782139B
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Abstract
The invention discloses a linear transmission system, which comprises a filtering device, a linear slide rail device, a ball screw device, a liquid temperature control device and a gas temperature control device, wherein the linear slide rail device is provided with a slide rail and a sliding block which is arranged on the slide rail in a sliding way; the ball screw device is arranged adjacent to the linear slide rail device and is provided with a screw rod and a ball nut; the ball nut is sleeved and arranged in the screw rod in the sliding way; the liquid temperature control device dips up liquid through the filtering device, the liquid is controlled at a preset temperature and is supplied to flowing between the screw rod and the ball nut; and the gas temperature control device provides a gas flowing between the screw rod and the ball nut. The gas is controlled at the preset temperature. The gas temperature control device mixes the gas and the liquid through the tube body, and the gas and the liquid are filled between the screw and the ball nut after uniformly mixed.
Description
Technical field
The present invention relates to a kind of linear transmission system, particularly a kind of linear transmission system with thermostatically-controlled equipment.
Background technique
In various linear transmission systems, often, convert rotation into linear transmission through the screw rod of ball screw device and cooperating of nut.In addition, ball through driving capable of circulation and ball nut and screw rod are arranged in pairs or groups each other again, reduce the frictional force between ball nut and the screw rod, make linear transmission system more smooth-going when operation.
Please with reference to shown in Figure 1, it is the ball screw device 2 of existing linear transmission system 1 and the schematic representation of cooling unit 3.Existing linear transmission system 1 comprises ball screw device 2 and cooling unit 3, and both are connected to each other.Ball screw device 2 comprises screw rod 21 and ball nut 22, and ball nut 22 is sheathed and be slidedly arranged on the screw rod 21.
Yet in existing ball screw device 2, cooling channel 223 is positioned at the wall thickness of ball nut 22, and therefore, cooling liquid 31 does not directly flow through between screw rod 21 and the ball nut 22.In other words, cooling liquid 31 produces heat when not having directly with ball nut 22 operations heating source contacts, and the heat that is produced during only indirectly with ball nut 22 operations sheds.
So; Also cause the radiating effect of ball screw device 2 not good; And make screw rod 21 can produce the problem (typical temperature rises 1 ℃, and screw rod 21 every 1m can extend 12 μ m) of thermal distortion, and cause the making tolerance of the processing system of using ball screw device 2 to increase because of temperature variation.
Therefore, how to design a kind of linear transmission system that can keep temperature stabilization between screw rod and ball nut, become one of important topic gradually.
Summary of the invention
In view of above-mentioned problem, the object of the invention is that a kind of linear transmission system that can keep temperature stabilization between screw rod and ball nut is provided.
For reaching above-mentioned purpose, linear transmission system according to the present invention comprises filtrating equipment, linear slide rail device, ball screw device, temperature control liquid device and gas temperature controlling device.The linear slide rail device has slide rail and slide block, and slide block is slidedly arranged on the slide rail.Ball screw device is adjacent to the linear slide rail device, and has screw rod and ball nut, and ball nut is sheathed and be slidedly arranged on the screw rod.The temperature control liquid device is by the filtrating equipment draw liquid, and controlling liquid is in preset temperature, and feed fluid is flowed through between screw rod and the ball nut.Gas temperature controlling device supply gas is flowed through between screw rod and the ball nut, and control gaseous is in preset temperature, and said gas temperature controlling device makes through body and after the even mixing of liquids and gases process, just is injected into gas and liquid mixing between screw rod and the ball nut.
Hold the above, linear transmission system according to the present invention is flowed through between screw rod and the ball nut through the gentle body temperature control of temperature control liquid device unit feeding liquids and gases.Therefore; Liquids and gases can directly contact with ball nut with screw rod, with as temperature controlled fluid, for example when ball screw device moves; Liquids and gases can directly be taken away the heat that produces between ball nut and the screw rod; Perhaps before ball screw device operation, liquids and gases can carry out preheating to ball nut and screw rod earlier, to reduce hot machine setup time.Therefore, linear transmission system of the present invention is to keep stable temperature between may command ball nut and the screw rod, produces the problem of thermal distortion to avoid slide rail and screw rod because of temperature variation, and increases the working life of linear transmission system.
In addition; The liquid of flowing through between ball nut and the screw rod can be earlier via after the filtrating equipment filtration; Draw and be supplied between ball nut and the screw rod by the temperature control liquid device again; With this liquid that can guarantee to flow through between ball nut and the screw rod is clean, produces damage to avoid ball nut and screw rod because of the impurity in the liquid.
And; Also because liquid can directly be flowed through between screw rod and the ball nut, therefore, liquid can be used as lubricating fluid; Therefore the stroke of ball nut can not shorten because of external lubrication assembly is compressed, and then the travel limits can avoid linear transmission system to use the time.
Description of drawings
Fig. 1 is existing a kind of linear transmission system schematic representation;
Fig. 2 is the schematic representation of a kind of linear transmission system of the preferred embodiment of the present invention; And
Fig. 3 is the generalized section of the screw rod and the ball nut of ball screw device of the present invention.
The primary clustering symbol description
1,4: linear transmission system
2,6: ball screw device
21,61: screw rod
22,62: ball nut
221,222: cooling hole
223: the cooling channel
3: cooling unit
31: cooling liquid
5: filtrating equipment
51: filter screen
52: the magnetic force filter element
53: the centrifugal filtration unit
621: the nut body
622: recirculation assembly
623: circulation port
7: the temperature control liquid device
8: the gas temperature controlling device
9: the linear slide rail device
91: slide rail
92: slide block
A: pedestal
A1: inclined-plane
B: ball
Bu: pump
C: air compressor
C1, C2: screw thread
G: gas
H: through hole
I: body
J: perforation
L: circulating path
Li: liquid
P: bearing table
P1, P2: ball channel
Embodiment
Below will linear transmission system according to the preferred embodiment of the invention be described with reference to accompanying drawing, wherein same components is represented with same-sign.
Please with reference to shown in Figure 2, it is the schematic representation of the linear transmission system 4 of present embodiment.Linear transmission system 4 comprises filtrating equipment 5, linear slide rail device 9, ball screw device 6, temperature control liquid device 7 and gas temperature controlling device 8.
Filtrating equipment 5 for example can have filter screen 51, a filter cotton or a filter cloth, also can have magnetic force filter element 52 and/or centrifugal filtration unit 53.In the present embodiment, having filter screen 51, magnetic force filter element 52 and centrifugal filtration unit 53 simultaneously with filtrating equipment 5 is that example is explained, yet this is not restricted.
Linear slide rail device 9 has slide rail 91 and slide block 92, and slide block 92 is slidedly arranged on the slide rail 91.In the present embodiment, be that example is explained with two linear slide rail devices 9, yet this not restricted.According to different demands, linear transmission system 4 can have more linear slide rail device 9, and each linear slide rail device 9 also can have a plurality of slide blocks 92.
Ball screw device 6 is contiguous to be arranged at linear slide rail device 9, and has screw rod 61 and ball nut 62, and ball nut 62 is sheathed and be slidedly arranged on the screw rod 61.In the present embodiment, be arranged between these linear slide rail devices 9 with ball screw device 6 and explain, but be not restricted.
Temperature control liquid device 7 for example can pass through pump Bu, by filtrating equipment 5 draw liquid Li.Wherein, liquid Li for example can be cold oil, lubricant oil or its combination.Temperature control liquid device 7 controlling liquid Li are at preset temperature, and flow through between screw rod 61 and the ball nut 62 through body I feed fluid Li.
Gas temperature controlling device 8 also can make gas mix with liquid Li through body I, and flows through between screw rod 61 and the ball nut 62.Wherein, gas for example can be the high-pressure air that air compressor C is produced, and through gas temperature controlling device 8 control gaseous in preset temperature.
In addition, in the present embodiment, linear transmission system 4 also can comprise pedestal A and bearing table P, and linear slide rail device 9 is positioned on the pedestal A with ball screw device 6, and bearing table P is connected with ball screw device 6 with linear slide rail device 9.Wherein, pedestal A has inclined-plane A1, and liquid Li is flowed out by ball screw device 6 and flow to filtrating equipment 5 via inclined-plane A1.Then can carry other machine on the bearing table P, so that machine carries out straight line motion.
Linear transmission system 4 is supplied with the liquid Li and the gas that are controlled in preset temperature and is flowed through between screw rod 61 and the ball nut 62 through temperature control liquid device 7 gentle body temperature control devices 8.Wherein, liquid Li and gas just are injected between screw rod 61 and the ball nut 62 through after evenly mixing, and therefore can effectively control the pressure of both mixed fluids, so that fluid is kept fixation pressure.
Therefore; Liquid Li and gas can be directly contact with ball nut 62 with as temperature controlled fluid with screw rod 61; For example when ball screw device 6 operations, liquid Li and gas can directly be taken away the heat that produces between screw rod 61 and the ball nut 62, perhaps before ball screw device 6 operations; Liquid Li and gas can be earlier carry out preheating to screw rod 61 and ball nut 62, to reduce hot machine setup time.Therefore, linear transmission system 4 is to keep stable temperature between may command screw rod 61 and the ball nut 62, produces the problem of thermal distortion to avoid screw rod 61 because of temperature variation, and increases the working life of linear transmission system 4.
In addition, the liquid Li between screw rod 61 and the ball nut 62 of flowing through after being flowed out by ball screw device 6, can flow to filtrating equipment 5 via inclined-plane A1.Magnetic force filter element 52 (for example having permanent magnet) via filter element 5 is absorbed the impurity such as iron filings among the liquid Li earlier; Again via centrifugal filtration unit 53 with the Impurity removal of centrifugation with non-iron property among the liquid Li, then pass through remaining impurity among the filter screen 51 filtering liquid Li again.
After filtrating equipment 5 filters, by temperature control liquid device 7 liquid Li is drawn again and be supplied between screw rod 61 and the ball nut 62.Therefore, the liquid Li that can guarantee to flow through between screw rod 61 and the ball nut 62 is clean, produces damage to avoid screw rod 61 and ball nut 62 because of the impurity among the liquid Li.
And; Also because liquid Li can directly flow through between screw rod 61 and the ball nut 62, therefore, liquid Li can use as lubricating fluid; Therefore the stroke of ball nut 62 can not shorten because of external lubrication assembly is compressed, and then the travel limits can avoid linear transmission system 4 to use the time.
What deserves to be mentioned is; Temperature control liquid device 7 also can be by filtrating equipment 5 draw liquid Li; And feed fluid Li flows through between slide rail 91 and the slide block 92; Gas temperature controlling device 8 supply gas are flowed through between slide rail 91 and the slide block 92, keep stable temperature with control slide rail 91 and 92 of slide blocks, and further increase the working life of linear transmission system 4.
In addition, please with reference to shown in Figure 3, it is the generalized section of screw rod 61 with the ball nut 62 of ball screw device 6.
In addition, in the present embodiment, on correspondence and direction, also can have the perforation J that axially runs through nut body 621 in nut body 621 wall thickness perpendicular to through hole H.Therefore, liquid Li and the gas G J that also can bore a hole injects as input hole, flows through between screw rod 61 and the ball nut 62 via through hole H.
Please refer again to shown in Figure 3ly, the ball nut 62 of present embodiment also can have two recirculation assemblies 622 and two circulation ports 623, yet this is not to be used for limiting the present invention.
In sum, linear transmission system according to the present invention is flowed through between slide rail and slide block and screw rod and the ball nut through the gentle body temperature control of temperature control liquid device unit feeding liquids and gases.Therefore; Liquids and gases can directly contact with ball nut with screw rod, with as temperature controlled fluid, for example when ball screw device moves; Liquids and gases can directly be taken away the heat that produces between ball nut and the screw rod; Perhaps before ball screw device operation, liquids and gases can carry out preheating to ball nut and screw rod earlier, to reduce hot machine setup time.Therefore, linear transmission system of the present invention is to keep stable temperature between may command slide rail and slide block and ball nut and the screw rod, produces the problem of thermal distortion to avoid slide rail and screw rod because of temperature variation, and increases the working life of linear transmission system.
In addition; The liquid of flowing through between slide rail and slide block and ball nut and the screw rod can be earlier via after the filtrating equipment filtration; Draw and be supplied between slide rail and slide block and ball nut and the screw rod by the temperature control liquid device again; Therefore can guarantee that the liquid of flowing through between slide rail and slide block and ball nut and the screw rod is clean, produce damage because of the impurity in the liquid to avoid slide rail and slide block and ball nut and screw rod.
In addition; Also because liquid can directly be flowed through between screw rod and the ball nut, therefore, liquid can be used as lubricating fluid; Therefore the stroke of ball nut can not shorten because of external lubrication assembly is compressed, and then the travel limits can avoid linear transmission system to use the time.
The above is merely illustrative, rather than restricted.Anyly do not break away from spirit of the present invention and category, and, all should be included in the accompanying Claim its equivalent modifications of carrying out or change.
Claims (12)
1. linear transmission system, it comprises:
One filtrating equipment;
One linear slide rail device, it has a slide rail and a slide block, and this slide block is slidedly arranged on this slide rail;
One ball screw device, it is adjacent to said linear slide rail device, and has a screw rod and a ball nut, and this ball nut is sheathed and be slidedly arranged on this screw rod;
One temperature control liquid device, it draws a liquid by said filtrating equipment, controls said liquid in preset temperature, and supplies with this flow of liquid between said screw rod and said ball nut; And
One gas temperature controlling device; It supplies with a gas stream between said screw rod and said ball nut; Control said gas in preset temperature; Said gas temperature controlling device makes through a body and after said liquid and said gas process are evenly mixed, just is injected into said gas and said liquid mixing between said screw rod and the said ball nut.
2. linear transmission system as claimed in claim 1, wherein said ball nut have a nut body, and this nut body has at least one through hole, and this through hole radially runs through said nut body.
3. linear transmission system as claimed in claim 2, wherein said screw rod and said nut body have a screw thread respectively, the corresponding ball channel that forms of those screw threads.
4. linear transmission system as claimed in claim 3, wherein said through hole are right against the tooth peak of the said screw thread of said screw rod.
5. linear transmission system as claimed in claim 2, wherein said liquid and said gas flow between said screw rod and the said ball nut via said through hole.
6. linear transmission system as claimed in claim 2, wherein said nut body also has a perforation, and this perforation is respectively corresponding and perpendicular to said through hole.
7. linear transmission system as claimed in claim 1, wherein said filtrating equipment have a filter screen, a filter cotton or a filter cloth.
8. linear transmission system as claimed in claim 1, wherein said filtrating equipment have a magnetic force filter element and/or a centrifugal filtration unit.
9. linear transmission system as claimed in claim 1 also comprises:
One pedestal, said linear slide rail device and said ball screw device are positioned on this pedestal.
10. linear transmission system as claimed in claim 9, wherein said pedestal has an inclined-plane, and said liquid is flowed out by said ball screw device, flow to said filtrating equipment via this inclined-plane.
11. linear transmission system as claimed in claim 1 also comprises:
One bearing table, it is connected with said linear slide rail device with said ball screw device.
12. linear transmission system as claimed in claim 1; Wherein said temperature control liquid device draws said liquid by said filtrating equipment; And supply with said flow of liquid between said slide rail and said slide block, said gas temperature controlling device is supplied with said gas stream between said slide rail and said slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100055554A CN101782139B (en) | 2009-01-20 | 2009-01-20 | Linear transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100055554A CN101782139B (en) | 2009-01-20 | 2009-01-20 | Linear transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101782139A CN101782139A (en) | 2010-07-21 |
| CN101782139B true CN101782139B (en) | 2012-08-22 |
Family
ID=42522251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100055554A Active CN101782139B (en) | 2009-01-20 | 2009-01-20 | Linear transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101782139B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB131475A (en) * | 1918-09-04 | 1919-08-28 | Frederick Lionel Rapson | Improvements in or relating to Anti-friction Nut and Screw Gearing. |
| GB908149A (en) * | 1959-10-08 | 1962-10-17 | Prec Gear Machines & Tools Ltd | A nut and screw drive device of the recirculating ball type |
| CN1377755A (en) * | 2001-03-30 | 2002-11-06 | 上银科技股份有限公司 | Rolling ball screw having cooling channel |
| CN1415872A (en) * | 2001-10-31 | 2003-05-07 | 上银科技股份有限公司 | Ball screw possessing cooling device |
| CN2589756Y (en) * | 2002-12-27 | 2003-12-03 | 银泰科技股份有限公司 | Cooling device for ball guide screw |
| CN201090722Y (en) * | 2007-09-06 | 2008-07-23 | 匠泽机械股份有限公司 | Hollow screw cooling apparatus |
| CN101260931A (en) * | 2007-03-06 | 2008-09-10 | 上银科技股份有限公司 | Linear transmission module possessing self-lubricating unit |
-
2009
- 2009-01-20 CN CN2009100055554A patent/CN101782139B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB131475A (en) * | 1918-09-04 | 1919-08-28 | Frederick Lionel Rapson | Improvements in or relating to Anti-friction Nut and Screw Gearing. |
| GB908149A (en) * | 1959-10-08 | 1962-10-17 | Prec Gear Machines & Tools Ltd | A nut and screw drive device of the recirculating ball type |
| CN1377755A (en) * | 2001-03-30 | 2002-11-06 | 上银科技股份有限公司 | Rolling ball screw having cooling channel |
| CN1415872A (en) * | 2001-10-31 | 2003-05-07 | 上银科技股份有限公司 | Ball screw possessing cooling device |
| CN2589756Y (en) * | 2002-12-27 | 2003-12-03 | 银泰科技股份有限公司 | Cooling device for ball guide screw |
| CN101260931A (en) * | 2007-03-06 | 2008-09-10 | 上银科技股份有限公司 | Linear transmission module possessing self-lubricating unit |
| CN201090722Y (en) * | 2007-09-06 | 2008-07-23 | 匠泽机械股份有限公司 | Hollow screw cooling apparatus |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-168319A 2002.06.14 |
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| Publication number | Publication date |
|---|---|
| CN101782139A (en) | 2010-07-21 |
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Owner name: COMTOP TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DINGJING TRANSMISSION TECHNOLOGY CO., LTD. Effective date: 20101223 |
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Free format text: CORRECT: ADDRESS; FROM: TAIWAN, CHINA TO: NO.195, DAHU ROAD, YINGGE TOWN, TAIPEI COUNTY, TAIWAN, CHINA |
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Effective date of registration: 20101223 Address after: China in Taiwan town of Taipei County Lake Road No. 195 Applicant after: TBI Motion Technology Co., Ltd. Address before: Taiwan, China Applicant before: Dingjing Transmission Technology Co., Ltd. |
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