CN103009170A - Air cooling mechanism for screw rod - Google Patents
Air cooling mechanism for screw rod Download PDFInfo
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- CN103009170A CN103009170A CN2012105537057A CN201210553705A CN103009170A CN 103009170 A CN103009170 A CN 103009170A CN 2012105537057 A CN2012105537057 A CN 2012105537057A CN 201210553705 A CN201210553705 A CN 201210553705A CN 103009170 A CN103009170 A CN 103009170A
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- interior ring
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Abstract
The invention relates to an air cooling mechanism for a screw rod, and is mainly used in a high-precision machine tool. No cooling mechanism which has a simple structure and a good cooling effect on the screw rod exists currently. The air cooling mechanism for the screw rod is characterized by consisting of an inner ring, an outer ring and a plurality of screws, wherein the inner ring consists of an inner ring body and an air cooling sleeve, an inner ring circular hole is arranged in the inner ring body, a screw rod channel is arranged in the air cooling sleeve, a wall surface of the air cooling sleeve is uniformly provided with two circles of air outlet holes, and axes of the air outlet holes are all vertically intersected with the axis of the air cooling sleeve; and the air cooling sleeve is fixed on the inner ring body, the outer ring consists of an outer ring body and an outer ring loop, an outer ring circular hole is arranged in the outer ring body, a wall surface of the outer ring loop is provided with an air inlet, the inner ring and the outer ring are fixed through the plurality of screws, the screw rod channel is aligned to the outer ring circular hole, and the inner ring body, the air cooling sleeve, the outer ring body and the outer ring loop define a cooled air distribution cavity in an annular structure. The air cooling mechanism has a simple structure, is low in manufacturing cost, and has a good cooling effect on the screw rod.
Description
Technical field
The present invention relates to a kind of air cooling mechanism, especially relate to a kind of screw mandrel air cooling mechanism, be mainly used in the high-precision lathe, be used for screw mandrel is cooled off.
Background technology
Lathe is when operation, and owing to friction produces heat, these heats can cause screw mandrel the situation of heat expansion to occur, thereby affect the precision of screw mandrel between the screw mandrel on the lathe and the nut seat.Lathe commonly used adopts the mode of oil cooling to process the situation that heat expansion appears in screw mandrel usually at present, be that screw mandrel is made into hollow structure, the cold oil that is used for cooling can flow at the screw mandrel of hollow structure, and what time not enough adopt the oil cooling mode to cool off below the main existence to screw mandrel in the lathe.
1, screw mandrel itself is had specific (special) requirements, requiring screw mandrel is hollow structure, and cold oil can flow in screw mandrel like this, the heat that is produced owing to friction to take away screw mandrel, but the manufacturing of the screw mandrel of hollow structure and difficulty of processing are very large, have improved the cost of equipment.
2, since lathe in running, screw mandrel is in the High Rotation Speed state, generally, the rotating speed of screw mandrel is more than 3000 rev/mins, the situation of leaking does not appear when guaranteeing the cold oil in-out lead screw, need to have good sealing property between screw mandrel and the docking mechanism, this has just increased the complexity of equipment and the cost that has improved equipment greatly.
When 3, adopting cold oil that screw mandrel is cooled off, after lathe work a period of time, the phenomenon of cold oil seepage usually all can occur, cause the cost of at ordinary times plant maintenance and maintenance higher, in case cause equipment fault, will bring damp production to enterprise.
4, cold oil is to flow in the screw mandrel of hollow structure, to take away screw mandrel because the friction heat that produced, be cold oil to the cooling of screw mandrel be from inside to outside, but, screw mandrel in the course of the work, because the heat that friction produces produces from the screw mandrel top layer, that is to say that the thermal deformation on the screw mandrel is from outside to inside, this with regard to causing screw mandrel because the heat that produces of friction is difficult in time, effectively be cooled oil take away, the effect that heat is transmitted is relatively poor, control to the screw mandrel thermal deformation is affected, and finally has influence on the precision of screw mandrel.
5, the running of oil cooling mechanism needs special-purpose cold oil, and oil require is regularly changed, thereby causes the wasting of resources, has also brought immediately the problems such as waste oil recovery.
6, need in the lathe to increase and overlap independently refrigeration mechanism and pressure conveyor structure, increased the manufacturing cost of equipment, cause the purchase cost of enterprise to improve, meanwhile, the later maintenance of equipment and use cost be corresponding improve also.
It is comparatively general that the screw mandrel of present employing hollow structure is processed the heat expansion situation, as the applying date be on December 29th, 2010, application number is in 201020685060.9 the Chinese patent, screw mandrel in the hollow internal cooling ball screw assembly, of record is exactly hollow structure, this hollow internal cooling ball screw assembly, comprises ball screw, ball nut, ball, is used for the ball-returning device of circulating ball, said ball screw is hollow ball screw, and this ball screw assembly, also comprises two sealing devices, two rolling support devices and outside cooling circuit device in addition.And for example the applying date is on 01 13rd, 2012, and application number is in the Chinese patent of 201220014953.X, record also be a kind of screw structure of hollow.All there is above-mentioned deficiency in these screw mandrel cooling structures.
In sum, also do not have now a kind of simple in structurely, reasonable in design, low cost of manufacture is to the screw mandrel cooling body of the good cooling results of screw mandrel.
Summary of the invention
The object of the invention is to overcome above shortcomings in the prior art, and provide a kind of simple in structure, reasonable in design, low cost of manufacture is to the screw mandrel air cooling mechanism of the good cooling results of screw mandrel.
The present invention addresses the above problem the technical scheme that adopts: this screw mandrel air cooling mechanism, it is characterized in that: it is by interior ring, outer shroud and several screws form, described interior ring is comprised of interior ring body and air-cooled cover, described interior ring body is cirque structure, the center of described interior ring body is provided with in one and encircles circular hole, be provided with the quantity interior ring connecting hole identical with screw around this interior ring body, described air-cooled cover is columnar structured, be provided with the screw mandrel passage in the described air-cooled cover, this screw mandrel passage is cylindrical structural, the diameter of the interior ring circular hole in the diameter of described screw mandrel passage and the interior ring body is identical, the wall of described air-cooled cover is provided with the two circle exhaust vents that are arranged in circular configuration uniformly, the number of every circle exhaust vent is nine, described exhaust vent is cylindrical structural, the axis of this exhaust vent all with the intersect vertical axis of air-cooled cover; Be arranged in the exhaust vent of same circle, the axes intersect of adjacent two exhaust vents, and the angle between the axis of these two adjacent exhaust vents is 40 degree; Described air-cooled cover is fixed on the interior ring body, the interior ring circular hole alignment in the screw mandrel passage in this air-cooled cover and the interior ring body, and the axis in the axis in the described air-cooled cover and the interior ring body is overlapping; Described outer shroud is comprised of outer shroud body and external toroidal ring, described outer shroud body is cirque structure, the center of this outer shroud body is provided with an outer shroud circular hole, the diameter of the interior ring circular hole in the diameter of this outer shroud circular hole and the interior ring body is identical, be provided with shape around the described outer shroud body, the outer shroud connecting hole that quantity and position all are complementary with interior ring connecting hole, described external toroidal ring is columnar structured, the wall of this external toroidal ring is provided with an air inlet, described air inlet is cylindrical structural, the size of this air inlet is greater than the size of exhaust vent, described external toroidal ring is fixed on the outer shroud body, the periphery of the outer wall of this external toroidal ring and outer shroud body flushes, and the axis of the axis of described external toroidal ring and outer shroud body is overlapping; Described interior ring and outer shroud are fixed by several screws, described screw cross-under is in corresponding outer shroud connecting hole and interior ring connecting hole, screw mandrel passage in the described air-cooled cover and the alignment of the outer shroud circular hole in the outer shroud body, axis in the described air-cooled cover and the axis of external toroidal ring are overlapping, and described interior ring body, air-cooled cover, outer shroud body and external toroidal ring surround the cooling air distribution chamber of a cirque structure.
Preferably, the number of screw of the present invention is six.
Preferably, interior ring body of the present invention around be provided with one the circle sealing ring, the sealing circle surround external toroidal ring around.
Preferably, outer shroud connecting hole of the present invention is counter bore structure.
Preferably, mutually alignment between the circle of two in the air-cooled cover of the present invention exhaust vent.
The present invention compared with prior art, have the following advantages and effect: it is high to efficiently solve high-speed, high precision Digit Control Machine Tool oil cooling mechanism production cost, difficulty of processing is large, the later maintenance maintenance cost of equipment is high, enterprise's later stage operation cost is high, and complicated refrigerating plant causes the more complicated problem of structure of whole lathe.
Of the present invention simple in structure, easy to manufacture, production cost is low, only formed by interior ring, outer shroud and several screws, during use, be directly installed on the both direction of screw mandrel motion, the diameter of screw mandrel is less than the diameter of screw mandrel passage in the air-cooled cover, and screw mandrel directly is sleeved in the screw mandrel passage, exhaust vent in the interior ring is aimed at screw mandrel, outside source of the gas enters the cooling air distribution chamber by the air inlet of outer shroud, flows out from exhaust vent again, and cooling blast is directly injected to the outer wall of screw mandrel, screw mandrel is played cooling effect, when lathe stopped, air valve can time-delay closing, stopped to blow.
Because screw mandrel in the course of the work, because the heat that friction produces produces from the screw mandrel top layer, that is to say that the thermal deformation on the screw mandrel is from outside to inside, the present invention directly lowers the temperature to the screw mandrel top layer, good cooling effect, screw mandrel because the heat that produces of friction can in time, effectively be cooled air-flow take away, prevent that effectively the situation of thermal deformation from appearring in screw mandrel, guarantees the precision of screw mandrel.In addition, because screw mandrel need not to manufacture hollow structure, greatly reduce the manufacture difficulty of screw mandrel, reduced the production cost of equipment.Adopt air as cooling medium, cost is low, not only environmental protection but also energy-conservation, and self there is the source of the gas supply system in machining factory, need not additionally to add auxiliary equipment, has reduced the cost of lathe.
Member of the present invention is few, cost is low, and each member of mechanism is all the screw assembling, and assembly and disassembly is very convenient; The heat that the screw mandrel motion produces is disposed immediately, reached the purpose without thermal deformation.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of screw mandrel air cooling mechanism in the present embodiment.
Fig. 2 is the right TV structure schematic diagram of Fig. 1.
Fig. 3 is the left TV structure schematic diagram of Fig. 1.
Fig. 4 is the plan structure schematic diagram of Fig. 1.
Fig. 5 is the main TV structure schematic diagram of interior ring in the present embodiment.
Fig. 6 is the left TV structure schematic diagram of Fig. 5.
Fig. 7 is the main TV structure schematic diagram of present embodiment outer-loop.
Fig. 8 is the left TV structure schematic diagram of Fig. 7.
Fig. 9 is the structural representation that is marked with the axis of interior ring body in the interior ring body acceptance of the bid of interior ring.
Figure 10 is the structural representation that is marked with the axis of air-cooled cover in the air-cooled cover acceptance of the bid of interior ring.
Figure 11 is the structural representation that is marked with the axis of external toroidal ring in the outer shroud acceptance of the bid.
Figure 12 is the structural representation that is marked with the axis of outer shroud body in the outer shroud acceptance of the bid.
Figure 13 be in the present embodiment in the ring and the outer shroud split after structural representation.
Figure 14 is that screw mandrel is installed in the structural representation in the screw mandrel air cooling mechanism of present embodiment.
Figure 15 is the right TV structure schematic diagram of Figure 14.
Figure 16 is the left TV structure schematic diagram of Figure 14.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and by embodiment.
Embodiment.
Referring to Fig. 1 to Figure 16, the screw mandrel air cooling mechanism in the present embodiment is comprised of interior ring 1, outer shroud 2 and six screws 3, and the number of screw 3 can arrange according to actual needs among the present invention, and the number of screw 3 is generally more than three.
Air-cooled cover 12 is columnar structured, be provided with screw mandrel passage 16 in the air-cooled cover 12, this screw mandrel passage 16 is cylindrical structural, the diameter of the interior ring circular hole 15 in the diameter of screw mandrel passage 16 and the interior ring body 11 is identical, the wall of air-cooled cover 12 is provided with the two circle exhaust vents 13 that are arranged in circular configuration uniformly, the wall that is air-cooled cover 12 is provided with two circle exhaust vents 13 uniformly, and every circle exhaust vent 13 all is arranged in circular configuration.The number of every circle exhaust vent 13 is nine, that is to say that nine exhaust vents 13 are arranged in cyclic structure in the circle exhaust vent 13.Exhaust vent 13 is cylindrical structural, and the axis of this exhaust vent 13 all intersects vertically with the axis d of air-cooled cover 12, and namely the axis of exhaust vent 13 is that axis d with air-cooled cover 12 intersects, and the axis of exhaust vent 13 is perpendicular with the axis d of air-cooled cover 12.
Mutually alignment between in the air-cooled cover 12 the two circle exhaust vent 13, namely an exhaust vent 13 in the circle exhaust vent 13 is corresponding one by one with the exhaust vent 13 that another encloses in exhaust vent 13, mutually alignment between the exhaust vent 13 of these two the mutual correspondences in difference circle exhaust vent 13.At the exhaust vent 13 that is arranged in same circle exhaust vent 13, the axes intersect of adjacent two exhaust vents 13, and the angle between the axis of these two adjacent exhaust vents 13 is 40 degree.
Air-cooled cover 12 is fixed on the interior ring body 11, screw mandrel passage 16 in this air-cooled cover 12 and 15 alignment of the interior ring circular hole in the interior ring body 11, because the diameter of the interior ring circular hole 15 in the diameter of screw mandrel passage 16 and the interior ring body 11 is identical, so that screw mandrel passage 16 and interior ring circular hole 15 match.Axis t in axis d in the air-cooled cover 12 and the interior ring body 11 is overlapping.
External toroidal ring 22 is columnar structured, and the wall of this external toroidal ring 22 is provided with an air inlet 23, and air inlet 23 is cylindrical structural, and the size of this air inlet 23 is greater than the size of single exhaust vent 13.Generally, air inlet 23 is arranged on the centre position of the wall of external toroidal ring 22.
External toroidal ring 22 is fixed on the outer shroud body 21, and the periphery of the outer wall of this external toroidal ring 22 and outer shroud body 21 flushes, and namely the junction of external toroidal ring 22 and outer shroud body 21 is not have outwardly part.The axis x of external toroidal ring 22 and the axis y of outer shroud body 21 are overlapping.
In the present embodiment, the axis y of the axis t in the axis d in the air-cooled cover 12, the interior ring body 11, the axis x of external toroidal ring 22, outer shroud body 21, the axis of interior ring 1 and the axis of outer shroud 2 all are overlapped.
Screw mandrel air cooling mechanism in the present embodiment is mainly used in the High speed high precision machine tool, during use, screw mandrel 4 in this lathe is sleeved in interior ring circular hole 15, screw mandrel passage 16 and the outer shroud circular hole 25, the axis d of the axis of screw mandrel 4 and air-cooled cover 12 is vertical, have certain gap between screw mandrel 4 and the screw mandrel passage 16, the exhaust vent 13 in the screw mandrel air cooling mechanism is all aimed at screw mandrel 4.During lathe work, screw mandrel 4 high speed rotating, generally, the rotating speed of screw mandrel 4 forms ring stream more than 3000 rev/mins in the gap between screw mandrel 4 and screw mandrel passage 16, and meanwhile, the outer surface of screw mandrel 4 is because friction generates heat; And the outside air-source that is used for cooling is input to cooling-air by appendix the air inlet 23 of screw mandrel air cooling mechanism, cooling-air enters the cooling air distribution chamber by air inlet 23, this cooling-air distributes in the cooling air distribution chamber, at last from exhaust vent 13 outputs, be directly injected to screw mandrel 4 surfaces from the cooling-air of exhaust vent 13 outputs, cooling-air has effectively been taken away the heat on screw mandrel 4 surfaces, reaches the purpose that screw mandrel 4 is lowered the temperature, and guarantees the precision of screw mandrel 4.
When machine tool motion, lathe PLC opens, and outside input source of the gas cools off by 13 pairs of screw mandrels 4 of exhaust vent, and when the lathe stop motion, lathe PLC closes air supply source and closes, and is very easy to use.
The structure of the screw mandrel air cooling mechanism in the present embodiment is very simple, only is comprised of interior ring 1, outer shroud 2 and several screws 3, and production cost is low, and is easy to manufacture, greatly simplified the structure of lathe, reduced the manufacturing cost of lathe.Screw mandrel air cooling mechanism in the present embodiment is very good to the cooling effect of screw mandrel 4, from outside to inside screw mandrel 4 is cooled off, and is just in time consistent with the direction of transfer of screw mandrel 4 self heat, and good cooling results can effectively be guaranteed the precision of screw mandrel 4 in the running.Use the lathe of the screw mandrel air cooling mechanism in the present embodiment, can use the screw mandrel 4 of common non-hollow structure, the difficulty of processing of screw mandrel 4 reduces greatly, can further reduce the manufacturing cost of lathe.
In addition, need to prove, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification only is to structure example of the present invention explanation.Allly conceive equivalence variation or the simple change that described structure, feature and principle are done according to patent of the present invention, be included in the protection domain of patent of the present invention.
Claims (5)
1. screw mandrel air cooling mechanism, it is characterized in that: it is by interior ring, outer shroud and several screws form, described interior ring is comprised of interior ring body and air-cooled cover, described interior ring body is cirque structure, the center of described interior ring body is provided with in one and encircles circular hole, be provided with the quantity interior ring connecting hole identical with screw around this interior ring body, described air-cooled cover is columnar structured, be provided with the screw mandrel passage in the described air-cooled cover, this screw mandrel passage is cylindrical structural, the diameter of the interior ring circular hole in the diameter of described screw mandrel passage and the interior ring body is identical, the wall of described air-cooled cover is provided with the two circle exhaust vents that are arranged in circular configuration uniformly, the number of every circle exhaust vent is nine, and described exhaust vent is cylindrical structural, the axis of this exhaust vent all with the intersect vertical axis of air-cooled cover; Be arranged in the exhaust vent of same circle, the axes intersect of adjacent two exhaust vents, and the angle between the axis of these two adjacent exhaust vents is 40 degree; Described air-cooled cover is fixed on the interior ring body, the interior ring circular hole alignment in the screw mandrel passage in this air-cooled cover and the interior ring body, and the axis in the axis in the described air-cooled cover and the interior ring body is overlapping; Described outer shroud is comprised of outer shroud body and external toroidal ring, described outer shroud body is cirque structure, the center of this outer shroud body is provided with an outer shroud circular hole, the diameter of the interior ring circular hole in the diameter of this outer shroud circular hole and the interior ring body is identical, be provided with shape around the described outer shroud body, the outer shroud connecting hole that quantity and position all are complementary with interior ring connecting hole, described external toroidal ring is columnar structured, the wall of this external toroidal ring is provided with an air inlet, described air inlet is cylindrical structural, the size of this air inlet is greater than the size of exhaust vent, described external toroidal ring is fixed on the outer shroud body, the periphery of the outer wall of this external toroidal ring and outer shroud body flushes, and the axis of the axis of described external toroidal ring and outer shroud body is overlapping; Described interior ring and outer shroud are fixed by several screws, described screw cross-under is in corresponding outer shroud connecting hole and interior ring connecting hole, screw mandrel passage in the described air-cooled cover and the alignment of the outer shroud circular hole in the outer shroud body, axis in the described air-cooled cover and the axis of external toroidal ring are overlapping, and described interior ring body, air-cooled cover, outer shroud body and external toroidal ring surround the cooling air distribution chamber of a cirque structure.
2. screw mandrel air cooling mechanism as claimed in claim 1, it is characterized in that: the number of described screw is six.
3. screw mandrel air cooling mechanism as claimed in claim 1 is characterized in that: be provided with a circle sealing ring around the described interior ring body, the sealing circle surround external toroidal ring around.
4. screw mandrel air cooling mechanism as claimed in claim 1, it is characterized in that: described outer shroud connecting hole is counter bore structure.
5. screw mandrel air cooling mechanism as claimed in claim 1 is characterized in that: mutually alignment between the circle of two in the described air-cooled cover exhaust vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210553705.7A CN103009170B (en) | 2012-12-19 | 2012-12-19 | Air cooling mechanism for screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210553705.7A CN103009170B (en) | 2012-12-19 | 2012-12-19 | Air cooling mechanism for screw rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009170A true CN103009170A (en) | 2013-04-03 |
| CN103009170B CN103009170B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210553705.7A Expired - Fee Related CN103009170B (en) | 2012-12-19 | 2012-12-19 | Air cooling mechanism for screw rod |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060053271A (en) * | 2004-10-15 | 2006-05-19 | 두산인프라코어 주식회사 | Cooling device of ball screw assembly |
| CN202074014U (en) * | 2011-05-17 | 2011-12-14 | 江西巨臣精机有限公司 | Novel ball screw transmission cooling device |
| CN102398188A (en) * | 2011-06-01 | 2012-04-04 | 兰州理工大学 | Hollow ball-screw gas-liquid binary cooling system |
| CN102788128A (en) * | 2012-07-06 | 2012-11-21 | 宋健 | High-speed ball screw pair with automatically adjustable pre-tightening force |
| JP2012247033A (en) * | 2011-05-30 | 2012-12-13 | Nsk Ltd | Ball screw, and method for controlling nut stiffness of ball screw |
| CN203092253U (en) * | 2012-12-19 | 2013-07-31 | 杭州三拓精密机械有限公司 | Lead screw air cooling device |
-
2012
- 2012-12-19 CN CN201210553705.7A patent/CN103009170B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060053271A (en) * | 2004-10-15 | 2006-05-19 | 두산인프라코어 주식회사 | Cooling device of ball screw assembly |
| CN202074014U (en) * | 2011-05-17 | 2011-12-14 | 江西巨臣精机有限公司 | Novel ball screw transmission cooling device |
| JP2012247033A (en) * | 2011-05-30 | 2012-12-13 | Nsk Ltd | Ball screw, and method for controlling nut stiffness of ball screw |
| CN102398188A (en) * | 2011-06-01 | 2012-04-04 | 兰州理工大学 | Hollow ball-screw gas-liquid binary cooling system |
| CN102788128A (en) * | 2012-07-06 | 2012-11-21 | 宋健 | High-speed ball screw pair with automatically adjustable pre-tightening force |
| CN203092253U (en) * | 2012-12-19 | 2013-07-31 | 杭州三拓精密机械有限公司 | Lead screw air cooling device |
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| CN103009170B (en) | 2014-12-17 |
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