CN1377755A - Rolling ball screw having cooling channel - Google Patents
Rolling ball screw having cooling channel Download PDFInfo
- Publication number
- CN1377755A CN1377755A CN 01110088 CN01110088A CN1377755A CN 1377755 A CN1377755 A CN 1377755A CN 01110088 CN01110088 CN 01110088 CN 01110088 A CN01110088 A CN 01110088A CN 1377755 A CN1377755 A CN 1377755A
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- Prior art keywords
- nut
- cooling
- ball screw
- cooling medium
- screw
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Abstract
The rolling ball screw has several screw nut with circular channel of cooling medium and two end caps with grooves inside them. By means of connecting the grooves inside the end caps and the cooling holes inside the screw nut, one circular cooling medium channel is formed, via which the cooling medium flows through the screw nut for cooling and exhausts from one outlet after absorbing heat energy.
Description
The invention belongs to a kind of ball screw, be meant a kind of ball screw that in nut, is provided with cooling medium circulation channel especially.
The type of cooling of ball screw commonly used, mainly be that screw portion central part axially in this ball screw digs and is provided with an axial bore, and its inside is embedded with a body usually, body one end is connected with the inlet tube of being located at screw rod one end, its other end then be located at the outlet of screw rod and be connected side, make cooling fluid one-way flows such as oil, water or refrigerant partly inner, and carried outside the high heat that is produced when ball screw rotates in screw rod.The major defect of above-mentioned design is:
1) since the spiro rod length of general ball screw all much larger than the length of nut, and the steel ball circulatory system is arranged at nut inside, after the ball screw running, the time ratio screw rod per unit area that the inner per unit area of nut contacts with the circulation steel ball is high with the time that the circulation steel ball contacts, therefore the heat major part that is produced that turns round concentrates on the nut, make the nut temperature be relatively higher than extruder temperature, and the above-mentioned hollow ball screw of the commonly using direct relatively low screw portion of chilling temperature only, can't effectively cool off on the contrary for the nut part that temperature is higher, whole cooling effect is handed over not remarkable;
2) this hollow ball screw is generally applied in the toolroom machine of high feed rate, because axial bore processing difficulties, be difficult to require the concentricity of this axial bore, so cause when running up, having the eccentric force of one-period property to produce, cause the oscillation phenomenon of board, this machining accuracy for toolroom machine has suitable adverse influence;
3) because factors such as the length of hollow screw and external diameters, its restriction is arranged when the processing axial bore, processing cost is higher, and its cooling liquid inlet pipe and outlet are divided into the both sides of screw portion, need take the bigger space that is provided with, so be difficult to be installed in narrow space, form inconvenience and restriction on using; And
4) external diameter that is subject to hollow screw limits, and its cooling fluid is difficult to form a backflow design in hollow screw, only can unidirectionally make the heat exchanger time of cooling fluid and screw rod quite very brief by hollow screw, and rate of heat exchange is difficult to effective lifting.
The purpose of this invention is to provide a kind of ball screw with cooling channel, it can directly cool off the nut part that produces higher operating temperature, have preferable whole cooling effect, and then make this ball screw commonly use hollow screw to be more suitable for high loading and high-speed tool machine in high feed rate, high loading and high manufacturing accuracy.
A time purpose of the present invention is to provide a kind of ball screw with cooling channel, and its nut is oscillation phenomenon when running up and without acceptance of persons, promotes the machining accuracy of toolroom machine.
Another object of the present invention is to provide a kind of cooling channel ball screw that has, can be in the inner reverse-flow type circulation channel that forms cooling medium of nut, can effectively long cooling medium and the heat exchanger time of nut, with the heat exchanger effectiveness of effective lifting cooling medium, and the difficulty of processing is low with respect to the hollow ball screw.
Another purpose of the present invention is to provide a kind of cooling channel ball screw that has, the entry and exit of its cooling medium can be selected directly to be installed on nut or the nut end covers at two sides, it is required be provided with the space much smaller than commonly use hollow screw required the space is set, and can lay in response to narrow space, lay in this mechanism design glue space for the various machineries that use ball screw as driving member (for example toolroom machine etc.), has suitable convenience and applicability.
Ball screw to achieve the above object of the invention with cooling channel, it mainly is the end cap of in the nut both sides are installed with respectively, establishing groove, utilize the groove of both sides end cap several cooling through holes with inner all settings of nut, be connected to become the reverse-flow type circulation channel of a cooling medium, cooling medium is supplied in this circulation channel by an inlet, with the cooling nut, cooling medium drains into the external world by an outlet behind the absorption heat energy.Can be respectively arranged with an anti-drain gasket between this nut and its two side cover, prevent the improper leakage of cooling medium; The entry and exit of this cooling medium can be connected to a cooling medium feeding mechanism respectively simultaneously, form a complete cooling recirculation system, this cooling medium feeding mechanism includes for example known members such as compressor, condenser, expansion valve, is used for the cooling medium of nut absorbed inside heat energy is cooled to a lower operating temperature.
See also the detailed description and the accompanying drawing thereof of following relevant a preferred embodiment of the present invention, can further understand the technology of the present invention content and purpose effect thereof; The accompanying drawing of relevant this embodiment is:
Figure one has the ball screw axial section of cooling channel for the present invention;
Figure two is the side view of nut part first embodiment in this ball screw;
Figure three is the front view partly of nut shown in the figure two;
Figure four is the side view of nut part second embodiment in this ball screw;
Figure five is the front view partly of nut shown in the figure four;
Figure six is the side view of nut both sides end cap partly in this ball screw; And
Figure seven is the front view of both sides end cap shown in the figure six.
Embodiment:
See also figure one, ball screw 10 provided by the present invention, several cool off the nut 20 of through holes 21 to include a screw rod 11 of form known, most individual steel ball 12, a steel ball circulatory system 13 and major technique features of the present invention tool partly; This steel ball 12 is placed between this screw rod 11 and the nut 20, and utilizes this steel ball circulatory system 13 to make its shuttling movement; When screw rod 11 rotation, can drive this nut 20 and do a linear movement, make this ball screw 10 can be used as the feed arrangement of machinery such as toolroom machine for example via these steel balls 12.
The present invention offers the cooling through hole 21 that several run through this nut 20 vertically in these nut 20 inside, enter this nut 20 inside for having a cooling medium of setting the operating temperature value, and carry out heat exchange with nut 20, to take away the heats that 12 of this nut 20 and steel balls are produced because of the circulation friction; This cooling medium means and comprises the various materials that liquid, gas etc. have cooling effect.
The end cap 23 (shown in figure six and figure seven) of at least one groove 24 of tool in these nut 20 both sides are set with respectively, utilize groove 24 several cooling through holes 21 that these nut 20 inside are set of both sides end cap 23, be connected to become the reverse-flow type circulation channel of a cooling medium, this cooling medium is supplied in this reverse-flow type circulation channel by an inlet 25, in order to the cooling nut, the cooling medium behind the absorption heat energy is discharged the outside of nuts 20 by an outlet 26.
This nut 20 and 23 of its both sides end caps can be respectively arranged with an anti-drain gasket, prevent the improper leakage of cooling medium, these leakage prevention sheets 22 must be in response to the position of set groove 24 on this both sides end cap 23, offer the through hole 27 of same position and equal number, make it not influence cooling medium in this reverse-flow type circulation channel free flow.
The anti-drain gasket 22 in this both sides end cap 23 and both sides can be embedded in the end face inside, both sides of this nut 20 shown in figure two and figure three; Or shown in figure four and figure five, be locked on the side, two ends of this nut 20.
The inlet 25 of above-mentioned cooling medium and export 26 two opening parts that lay respectively at this reverse-flow type circulation channel, and it can be set at shown in figure two and figure three on the both sides end face of this nut 20; Or shown in figure four and figure five, be set on the outer circumference surface of this nut 20; Or be set on the end face or outer circumference surface of this both sides end cap 23; Or according to the position configuration of actual needs.
The inlet 25 of this cooling medium is connected to a cooling medium feeding mechanism (scheming not shown) respectively with outlet 26, form a complete cooling recirculation system, this cooling medium feeding mechanism includes for example known members such as compressor, condenser, expansion valve, in order to will be in nut 20 absorbed inside heat energy and cooling medium that temperature raises is cooled to low operating temperature, make its circulation enter this nut 20 inside again, carry out heat exchange.
Ball screw with cooling channel provided by the present invention when comparing mutually with the aforementioned located by prior art of offering the cooling through hole in screw rod inside, has more following advantage:
1) can directly cool off the nut part that produces higher operating temperature, has preferable whole cooling effect, and then make this ball screw commonly use the Modern High-Speed toolroom machine that hollow screw more is applicable to high feed rate and high manufacturing accuracy, can guarantee the precision of ball screw and the service life of improving ball screw simultaneously;
2) can be in the inner reverse-flow type circulation channel that forms cooling medium of nut, but not, can effectively prolong the heat exchanger time of cooling medium and nut, with the heat exchanger effectiveness of effective lifting cooling medium as the one-way flow through hole of located by prior art;
3) because nut is to do a linear movement, so nut there is no commonly use the eccentric oscillation phenomenon that hollow screw easily produces when rotating at a high speed, for the machining accuracy of toolroom machine do not cause any must not influence, more can relatively effectively promote the machining accuracy of toolroom machine;
4) entry and exit of cooling medium can be selected directly to be installed on nut or the nut end covers at two sides, it is required be provided with the space much smaller than commonly use hollow screw required the space is set, and can lay in response to narrow space, lay in mechanism design and space for the various machinery that uses ball screw as driving member (for example toolroom machine etc.), has suitable convenience and applicability; And
5) user only need utilize general joint to connect the inlet and the outlet of this reverse-flow type circulation channel, can import cooling medium nut inside is cooled off, and assemble to have quite easy convenience.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, but these embodiment are not in order to limiting claim of the present invention, does not allly break away from the equivalence that the technology of the present invention content does and implements or change, all should be contained in the claim of the present invention.
Claims (3)
1, a kind of ball screw with cooling channel, comprise a screw rod, to be driven and make the nut of a linear movement, most steel ball circulatory systems that are placed in the steel ball between this screw rod and this nut and impel these steel ball shuttling movements, it is characterized in that along this screw rod by this screw rod:
This nut inside be provided with at least one cooling but medium circulate in a cooling through hole that runs through this nut in this cooling through hole.
2, the ball screw with cooling channel according to claim 1, it is characterized in that: the end cap of at least one groove of tool in wherein this nut is installed with respectively at its both sides, these cooling through holes that these grooves are inner set with this nut are connected to become one and have an inlet and a circulation channel that exports.
3, the ball screw with cooling channel according to claim 2 is characterized in that: wherein be respectively arranged with an anti-drain gasket between this nut and this both sides end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011100885A CN1175195C (en) | 2001-03-30 | 2001-03-30 | Rolling ball screw having cooling channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011100885A CN1175195C (en) | 2001-03-30 | 2001-03-30 | Rolling ball screw having cooling channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1377755A true CN1377755A (en) | 2002-11-06 |
| CN1175195C CN1175195C (en) | 2004-11-10 |
Family
ID=4658335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011100885A Expired - Lifetime CN1175195C (en) | 2001-03-30 | 2001-03-30 | Rolling ball screw having cooling channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1175195C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102124251A (en) * | 2009-08-31 | 2011-07-13 | 日本精工株式会社 | Ball screw device |
| CN101782139B (en) * | 2009-01-20 | 2012-08-22 | 全球传动科技股份有限公司 | Linear transmission system |
| CN102996741A (en) * | 2011-09-16 | 2013-03-27 | 上银科技股份有限公司 | Transmission module with cooling device |
| CN105065597A (en) * | 2015-07-28 | 2015-11-18 | 南京工艺装备制造有限公司 | Pre-tightening type ball nut with cooling structure |
| CN109488737A (en) * | 2017-09-12 | 2019-03-19 | 上银科技股份有限公司 | Has the ball screw of coolant flow channel |
| CN112975570A (en) * | 2021-03-23 | 2021-06-18 | 广州市昊志机电股份有限公司 | Machine tool spindle cooling device and machine tool |
| CN113231884A (en) * | 2021-04-26 | 2021-08-10 | 广州市昊志机电股份有限公司 | Main shaft flange temperature regulation device, main shaft and machine tool |
-
2001
- 2001-03-30 CN CNB011100885A patent/CN1175195C/en not_active Expired - Lifetime
Cited By (10)
| 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 |
| CN102124251A (en) * | 2009-08-31 | 2011-07-13 | 日本精工株式会社 | Ball screw device |
| US8752446B2 (en) | 2009-08-31 | 2014-06-17 | Nsk Ltd. | Ball screw device |
| CN102996741A (en) * | 2011-09-16 | 2013-03-27 | 上银科技股份有限公司 | Transmission module with cooling device |
| 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 |
| CN105065597A (en) * | 2015-07-28 | 2015-11-18 | 南京工艺装备制造有限公司 | Pre-tightening type ball nut with cooling structure |
| CN109488737A (en) * | 2017-09-12 | 2019-03-19 | 上银科技股份有限公司 | Has the ball screw of coolant flow channel |
| CN109488737B (en) * | 2017-09-12 | 2020-07-17 | 上银科技股份有限公司 | Ball screw with cooling flow passage |
| CN112975570A (en) * | 2021-03-23 | 2021-06-18 | 广州市昊志机电股份有限公司 | Machine tool spindle cooling device and machine tool |
| CN113231884A (en) * | 2021-04-26 | 2021-08-10 | 广州市昊志机电股份有限公司 | Main shaft flange temperature regulation device, main shaft and machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1175195C (en) | 2004-11-10 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20041110 |
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| CX01 | Expiry of patent term |