CN118002809B - Motorized spindle with dual cooling structure - Google Patents
Motorized spindle with dual cooling structure Download PDFInfo
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- CN118002809B CN118002809B CN202410417203.4A CN202410417203A CN118002809B CN 118002809 B CN118002809 B CN 118002809B CN 202410417203 A CN202410417203 A CN 202410417203A CN 118002809 B CN118002809 B CN 118002809B
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- 238000001816 cooling Methods 0.000 title claims abstract description 139
- 230000009977 dual effect Effects 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 claims abstract description 115
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an electric spindle with a double cooling structure, which belongs to the technical field of electric spindles, wherein a first cooling cavity is formed in the outer wall of a front bearing part, a second cooling cavity is formed in the outer wall of the rear part, and a third cooling cavity is formed between a front pressing shell and a front cover; the liquid inlet nozzle is sequentially communicated with the first cooling cavity and the second cooling cavity for liquid cooling, the liquid outlet nozzle is communicated with the second cooling cavity and is used for reflux of condensing agent, and the air inlet nozzle is communicated with the third cooling cavity and is used for gas cooling; a plurality of groups of ventilation holes are formed in the spacer ring, a plurality of groups of ventilation grooves matched with the ventilation holes are formed in the rear shaft sleeve, and a guide groove communicated with the outer ventilation grooves is formed in the outer wall of the rotary transformer. The invention can double-cool the shell through condensate and gas. The air can be cooled through the air inlet pipeline and the second cooling cavity, and condensate in the first liquid inlet groove is intermittently sprayed when the main shaft rotates. Under the action of the fan, the condensate is quickly atomized, and the condensate is quickly discharged out of the device while taking away heat.
Description
Technical Field
The invention relates to the technical field of electric spindles, in particular to an electric spindle with a double cooling structure.
Background
Motorized spindles are new technologies that integrate machine tool spindles with spindle motors that are emerging in the field of numerically controlled machine tools. The main shaft is a set of components and comprises an electric main shaft, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like. The transmission structure of the spindle motor and the machine tool spindle is combined into a whole, so that the spindle component is relatively independent from the transmission system and the whole structure of the machine tool, and the spindle motor can be manufactured into a spindle unit.
The patent application with publication number CN113695608A discloses a cooling device and an electric spindle, so as to solve the problems that the existing circulating cooling structure for cooling only the spindle or stator only realizes local cooling and has small cooling range. The cooling device comprises a cooling assembly, wherein the cooling assembly is provided with a first cooling channel; the bearing seat is fixedly arranged on the cooling assembly and is provided with a bearing cooling channel; the first cooling passage is in communication with the bearing cooling passage. The first cooling channel can cool the shell and the stator at the same time, and the first cooling channel is communicated with the bearing cooling channel to form an integral circulating cooling channel, so that the cooling area is further enlarged, and the cooling effect on the motor shell, the stator and the bearing seat is achieved at the same time.
However, the cooling effect of the electric spindle disclosed above is general, the equipment is damaged due to the fact that the temperature is too high after long-time use, the cooling mode is single, and an efficient cooling system is lacked.
Disclosure of Invention
The invention aims at: in order to solve the problems that the cooling effect of the existing electric spindle is common, equipment is damaged due to overhigh temperature after long-time use, the cooling mode is single, an efficient cooling system is lacked, and the like, the electric spindle with a double cooling structure is provided.
In order to achieve the above purpose, the technical scheme of the invention is as follows: an electric spindle with a double cooling structure comprises a spindle, a front pressing shell and a main shell, wherein the main shell comprises a front bearing part and a rear part, the front pressing shell is arranged on the front side of the front bearing part, the rear side of the rear part is connected with a rear bearing seat, and the other side of the rear bearing seat is connected with a rear shell; the rear side of the rear bearing seat is also connected with a rotary transformer, the rotary transformer is positioned in the rear shell, the side surface of the rotary transformer is also connected with a rear nut, and the main shaft is rotatably arranged in the middle of the front pressing shell and the main shell; a first cooling cavity is formed in the outer wall of the front bearing part, a second cooling cavity is formed in the outer wall of the rear part, a front cover is mounted on the outer side of the front pressing shell, and a third cooling cavity is formed between the front pressing shell and the front cover; the outer side of the rear shell is provided with a liquid inlet nozzle, a liquid outlet nozzle and an air inlet nozzle, the liquid inlet nozzle is sequentially communicated with a first cooling cavity and a second cooling cavity for liquid cooling, the liquid outlet nozzle is communicated with the second cooling cavity and returns condensing agent, and the air inlet nozzle is communicated with the third cooling cavity and cools air; the middle part of the rear bearing seat is provided with a plurality of groups of ball bearings, space rings are arranged between the ball bearings, two sides of each ball bearing are provided with rear shaft sleeves, the space rings are provided with a plurality of groups of ventilation holes, and the rear shaft sleeves are provided with a plurality of groups of ventilation grooves matched with the ventilation holes; the inside multiunit outer air outlet groove of having seted up of back bearing frame, set up on the outer wall of the cyclone with the guide slot of outer air outlet groove intercommunication, the bottom of cyclone with the interior logical groove of back bearing frame intercommunication is seted up, the guide slot is used for the inside high temperature gas drainage of main casing to the inside of cyclone.
As still further aspects of the invention: the inside of backshell seted up with the feed liquor groove one of feed liquor mouth intercommunication, the inside of back bearing frame seted up with the feed liquor groove two of feed liquor groove one intercommunication, the inside at rear portion has been seted up the feed liquor groove three, the feed liquor groove three through the feed liquor perpendicular groove one with second cooling chamber intercommunication, the feed liquor groove four has been seted up to the inside of front bearing portion, the second cooling chamber through the flowing back perpendicular groove one with feed liquor groove four intercommunication, the feed liquor groove four through the feed liquor perpendicular groove two with first cooling chamber intercommunication.
As still further aspects of the invention: the inner part of the front bearing part is provided with a first liquid discharge groove, the first liquid discharge groove is communicated with the first cooling cavity through a second liquid discharge vertical groove, the inner part of the rear part is provided with a second liquid discharge groove communicated with the first liquid discharge groove, the inner part of the rear bearing seat is provided with a third liquid discharge groove communicated with the second liquid discharge groove, the inner part of the rear shell is provided with a fourth liquid discharge groove communicated with the third liquid discharge groove, and the liquid outlet nozzle is communicated with the fourth liquid discharge groove.
As still further aspects of the invention: the inside of backshell offer with air inlet groove one of air inlet nozzle intercommunication, the inside of back bearing frame offer with air inlet groove two of air inlet groove one intercommunication, the inside of main casing offer with air inlet groove three of air inlet groove two intercommunication, the inside of preceding press shell offer with air inlet groove four of air inlet groove three intercommunication, air inlet groove four with the third cooling chamber intercommunication.
As still further aspects of the invention: the front housing is mounted on the outer side of the front bearing portion, and the outer housing is mounted on the outer side of the rear portion.
As still further aspects of the invention: the inside of second cooling chamber is provided with multiunit admission line, be provided with multiunit intake pipe and outlet duct on the admission line, the intake pipe runs through the shell and with outside intercommunication, the outlet duct run through the rear portion and with the inside intercommunication of main casing, the outside of shell still install with intake pipe complex air cleaner.
As still further aspects of the invention: an exhaust groove is formed between the front cover and the main shaft, and the exhaust groove is communicated with the third cooling cavity.
As still further aspects of the invention: the rear nut is provided with a plurality of groups of exhaust channels II communicated with the inside of the rear shell, and the bottom of the rear shell is provided with a plurality of groups of exhaust channels I communicated with the outside.
As still further aspects of the invention: an assembly ring is further installed between the rotary transformer and the rear nut, an installation groove matched with each other is formed in the joint of the rotary transformer and the assembly ring, a communicating pipe is installed in the installation groove, an inlet of the communicating pipe is communicated with the first liquid inlet groove, a fan blade is installed on the main shaft and located between the inner through groove and the communicating pipe, and an extrusion column matched with the communicating pipe is further installed on the main shaft.
As still further aspects of the invention: the inner wall of the communicating pipe is provided with a plurality of groups of bosses, the outlet of the communicating pipe is provided with a limiting ring, a movable valve is movably arranged between the bosses and the limiting ring, the bottom of the movable valve is connected with the bosses through a reset spring, the outer side of the movable valve is connected with a bulge matched with the extrusion column, the bottom of the movable valve is provided with a plurality of groups of first spray holes, and the limiting ring is provided with a plurality of groups of second spray holes staggered with the first spray holes.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the main shell can be subjected to liquid cooling through the matching of the liquid inlet nozzle, the first cooling cavity and the second cooling cavity, and condensate is returned through the liquid outlet nozzle. And the front pressure shell of the device can be cooled by gas through the matching of the air inlet nozzle and the third cooling cavity, and the shell of the device can be cooled doubly by condensate and gas. In addition, the inside of the main housing can be communicated with the outside by the cooperation of the resolver, the rear bearing housing, and the rear nut and the air flowability can be further improved. The air inlet pipeline and the second cooling cavity are matched to cool the outside air, and the flow speed of the air is further improved under the action of the fan blades. When the main shaft rotates, the extrusion column can intermittently extrude the movable valve, so that condensate in the first liquid inlet groove intermittently sprays the interior of the rotary converter. Under the action of the fan blades, condensate is rapidly atomized, and the condensate is rapidly discharged out of the device through the first exhaust channel and the second exhaust channel while heat is taken away. The design further improves the cooling effect and also improves the safety and the practicability of the motorized spindle with the multiple cooling structures.
Drawings
The invention is further explained below with reference to the drawings and examples:
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the present invention in the direction of the liquid inlet nozzle;
FIG. 3 is a cross-sectional view of the invention in the direction of the spout;
FIG. 4 is a cross-sectional view of the present invention taken in the direction of the air intake nozzle;
FIG. 5 is a fragmentary view of the internal construction of the present invention;
FIG. 6 is a perspective view of a spacer ring according to the present invention;
FIG. 7 is a cross-sectional structural separation of the rear housing and the resolver of the present invention;
FIG. 8 is a cross-sectional view of a communication pipe according to the present invention;
Fig. 9 is an enlarged view of the structure at a in fig. 8;
fig. 10 is a perspective view of a communication pipe according to the present invention;
FIG. 11 is a second perspective view of the present invention;
fig. 12 is a cross-sectional view of the present invention at an intake duct.
Reference numerals illustrate:
1. A main shaft; 2. a front pressing shell; 3. a front cover; 4. a main housing; 5. a front cover shell; 6. a rear bearing seat; 7. a rear case; 8. a housing; 9. a resolver; 10. a rear nut; 11. a front bearing portion; 12. a rear portion; 13. a first cooling chamber; 14. a second cooling chamber; 15. a liquid inlet nozzle; 16. a liquid outlet nozzle; 17. an air inlet nozzle; 18. a liquid inlet groove I; 19. a liquid inlet groove III; 20. a liquid inlet vertical groove I; 21. a liquid discharge vertical groove I; 22. a liquid inlet groove IV; 23. a liquid inlet vertical groove II; 24. a liquid discharge vertical groove II; 25. a first liquid discharge groove; 26. a liquid discharge groove II; 27. a liquid discharge groove III; 28. a liquid discharge groove IV; 29. an air inlet groove I; 30. an air inlet groove II; 31. an air inlet groove III; 32. an air inlet groove IV; 33. a third cooling cavity; 34. an exhaust groove; 35. an air intake duct; 36. an air inlet pipe; 37. an air outlet pipe; 38. an air filter; 39. a liquid inlet groove II; 40. a ball bearing; 41. a spacer ring; 42. a rear sleeve; 43. ventilation holes; 44. a ventilation groove; 45. a mounting ring; 46. a mounting groove; 47. an inner through groove; 48. an outer air outlet groove; 49. a guide groove; 50. an extrusion column; 51. a communicating pipe; 52. a boss; 53. a return spring; 54. a limiting ring; 55. a moving valve; 56. a first nozzle hole; 57. a protrusion; 58. a second nozzle hole; 59. a fan blade; 60. an exhaust channel I; 61. and an exhaust channel II.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to fig. 1 to 12, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an electric main shaft with a double cooling structure through improvement, as shown in fig. 1-12, which comprises a main shaft 1, a front pressing shell 2 and a main shell 4, wherein the main shell 4 comprises a front bearing part 11 and a rear part 12, the front pressing shell 2 is arranged on the front side of the front bearing part 11, the rear side of the rear part 12 is connected with a rear bearing seat 6, and the other side of the rear bearing seat 6 is connected with a rear shell 7; the rear side of the rear bearing seat 6 is also connected with a rotary transformer 9, the rotary transformer 9 is positioned in the rear shell 7, the side surface of the rotary transformer 9 is also connected with a rear nut 10, and the main shaft 1 is rotatably arranged in the middle of the front press shell 2 and the main shell 4; the outer wall of the front bearing part 11 is provided with a first cooling cavity 13, the outer wall of the rear part 12 is provided with a second cooling cavity 14, the outer side of the front press shell 2 is provided with a front cover 3, and a third cooling cavity 33 is arranged between the front press shell 2 and the front cover 3; the outside of the rear shell 7 is provided with a liquid inlet nozzle 15, a liquid outlet nozzle 16 and an air inlet nozzle 17, wherein the liquid inlet nozzle 15 is sequentially communicated with the first cooling cavity 13 and the second cooling cavity 14 for liquid cooling, the liquid outlet nozzle 16 is communicated with the second cooling cavity 14 for reflux of condensing agent, and the air inlet nozzle 17 is communicated with the third cooling cavity 33 for gas cooling; a plurality of groups of ball bearings 40 are arranged in the middle of the rear bearing seat 6, space rings 41 are arranged between the ball bearings 40, rear shaft sleeves 42 are arranged on two sides of the ball bearings 40, a plurality of groups of ventilation holes 43 are formed in the space rings 41, and a plurality of groups of ventilation grooves 44 matched with the ventilation holes 43 are formed in the rear shaft sleeves 42; the inside multiunit outer air outlet groove 48 of having seted up of back bearing frame 6, set up on the outer wall of cyclone 9 with go out air outlet groove 48 intercommunication guide slot 49, the interior logical groove 47 with back bearing frame 6 intercommunication is seted up to cyclone 9's bottom, guide slot 49 is used for guiding the inside high temperature gas of main casing 4 to cyclone 9's inside.
In this embodiment: the motorized spindle with the double cooling structure mainly comprises three parts: a main shaft 1, a front press shell 2 and a main shell 4. In use, the apparatus first activates the electro-spindle and drives the spindle 1 in rotation and condensate is fed through the inlet nozzle 15 and cooler gas is fed through the inlet nozzle 17. The condensate sequentially passes through the first liquid inlet groove 18, the second liquid inlet groove 39, the third liquid inlet groove 19 and the fourth liquid inlet groove 22 to enter the first cooling cavity 13 and the second cooling cavity 14 respectively, and the condensate is discharged out of the device through the first liquid discharge groove 25, the second liquid discharge groove 26, the third liquid discharge groove 27, the fourth liquid discharge groove 28 and the liquid outlet nozzle 16 to complete circulation while taking away the temperature. The gas with lower temperature sequentially passes through the first air inlet groove 29, the second air inlet groove 30, the third air inlet groove 31 and the fourth air inlet groove 32 to enter the third cooling cavity 33, and is directly discharged to the outside from the air outlet groove 34 while taking the temperature away. When the main shaft 1 drives the fan blades 59 to rotate, negative pressure is formed inside the main housing 4, at this time, external air enters the main electric shaft through the air filter 38 and the air inlet pipeline 35, and condensate in the second cooling cavity 14 cools the air in the air inlet pipeline 35. At this time, the high-temperature gas in the main casing 4 is introduced into the interior of the resolver 9 through the double paths of the gas-permeable holes 43, the gas-permeable grooves 44 and the inner gas-permeable grooves 47, and the outer gas-permeable grooves 48 and the guide grooves 49. When the spindle 1 rotates the pressing column 50, the pressing column 50 presses the protrusion 57 upward. Because the first spray hole 56 and the second spray hole 58 are staggered, condensate can be sprayed into the cyclone 9 through the first liquid inlet groove 18 and the communicating pipe 51, the condensate is rapidly atomized under the action of the fan blades 59, and the atomized condensate rapidly cools high-temperature gas in the cyclone 9. Finally, the cooled gas is discharged to the outside through the first exhaust passage 60 and the second exhaust passage 61.
Referring to fig. 2-4, a first liquid inlet groove 18 communicated with the liquid inlet nozzle 15 is formed in the rear shell 7, a second liquid inlet groove 39 communicated with the first liquid inlet groove 18 is formed in the rear bearing seat 6, a third liquid inlet groove 19 is formed in the rear portion 12, the third liquid inlet groove 19 is communicated with the second cooling cavity 14 through a first liquid inlet vertical groove 20, a fourth liquid inlet groove 22 is formed in the front bearing portion 11, the second cooling cavity 14 is communicated with the fourth liquid inlet groove 22 through a first liquid outlet vertical groove 21, and the fourth liquid inlet groove 22 is communicated with the first cooling cavity 13 through a second liquid inlet vertical groove 23.
In this embodiment: in order to cool the device by means of condensate, a first cooling chamber 13 is provided on the outer wall of the front bearing portion 11 and a second cooling chamber 14 is provided on the outer wall of the rear portion 12. In order to communicate the liquid inlet nozzle 15 with the first cooling cavity 13 and the second cooling cavity 14, a liquid inlet groove I18, a liquid inlet groove II 39, a liquid inlet groove III 19 and a liquid inlet groove IV 22 which are mutually communicated are designed.
Referring to fig. 2-4, a first liquid draining groove 25 is formed in the front bearing portion 11, the first liquid draining groove 25 is communicated with the first cooling cavity 13 through a second liquid draining vertical groove 24, a second liquid draining groove 26 communicated with the first liquid draining groove 25 is formed in the rear portion 12, a third liquid draining groove 27 communicated with the second liquid draining groove 26 is formed in the rear bearing seat 6, a fourth liquid draining groove 28 communicated with the third liquid draining groove 27 is formed in the rear housing 7, and the liquid outlet 16 is communicated with the fourth liquid draining groove 28.
In this embodiment: in order to reflux condensed liquid after condensation, a first liquid discharge groove 25, a second liquid discharge groove 26, a third liquid discharge groove 27 and a fourth liquid discharge groove 28 are designed to enable the first cooling cavity 13 to be communicated with the liquid outlet nozzle 16.
Referring to fig. 2-4, an air inlet groove one 29 communicated with the air inlet nozzle 17 is formed in the rear shell 7, an air inlet groove two 30 communicated with the air inlet groove one 29 is formed in the rear bearing seat 6, an air inlet groove three 31 communicated with the air inlet groove two 30 is formed in the main shell 4, an air inlet groove four 32 communicated with the air inlet groove three 31 is formed in the front pressure shell 2, and the air inlet groove four 32 is communicated with a third cooling cavity 33.
In this embodiment: in order to cool the front press case 2, a third cooling chamber 33 is provided between the front press case 2 and the front cover 3. In order to communicate the air intake nozzle 17 with the third cooling chamber 33, an air intake groove one 29, an air intake groove two 30, an air intake groove three 31 and an air intake groove four 32 are designed to communicate with each other.
Referring to fig. 1 to 4, the front housing 5 is mounted on the outer side of the front bearing portion 11, and the outer housing 8 is mounted on the outer side of the rear portion 12.
In this embodiment: the outer wall of the front bearing part 11 is provided with a first cooling cavity 13, and the front sleeve 5 is positioned outside the first cooling cavity 13. The outer wall of the rear part 12 is provided with a second cooling cavity 14, and the shell 8 is positioned outside the second cooling cavity 14.
Referring to fig. 2-5 and 12, a plurality of groups of air inlet pipelines 35 are arranged in the second cooling cavity 14, a plurality of groups of air inlet pipes 36 and air outlet pipes 37 are arranged on the air inlet pipelines 35, the air inlet pipes 36 penetrate through the shell 8 and are communicated with the outside, the air outlet pipes 37 penetrate through the rear portion 12 and are communicated with the inside of the main shell 4, and an air filter 38 matched with the air inlet pipes 36 is further arranged on the outside of the shell 8.
In this embodiment: in order to further cool the air entering the inside of the main housing 4, the air inlet pipe 35 is disposed in the second cooling chamber 14, and the diameter of the air inlet pipe 35 is smaller than the height of the second cooling chamber 14, so that the air inlet pipe 35 does not affect the normal flow of condensate in the second cooling chamber 14. In order to clean the air and avoid damaging the inside of the motorized spindle by impurities, an air filter 38 is also mounted on the outside of the casing 8, cooperating with the air inlet duct 36.
Referring to fig. 2 to 4, an exhaust groove 34 is provided between the front cover 3 and the spindle 1, and the exhaust groove 34 is communicated with the third cooling chamber 33.
In this embodiment: in order to cool the front press case 2 and the output portion of the spindle 1 by the gas, the exhaust groove 34 is communicated with the third cooling chamber 33, and the gas is discharged from the exhaust groove 34 to the outside while taking the temperature.
Referring to fig. 1 and 3-4, the rear nut 10 is provided with a plurality of exhaust channels 61 communicated with the inside of the rear shell 7, and the bottom of the rear shell 7 is provided with a plurality of exhaust channels 60 communicated with the outside.
In this embodiment: in order to discharge the high temperature gas inside the main casing 4 out of the apparatus, a plurality of sets of first exhaust passages 60 communicating with the outside are opened at the bottom of the rear casing 7.
Referring to fig. 7, an assembly ring 45 is further installed between the rotary transformer 9 and the rear nut 10, a mounting groove 46 matched with each other is formed at the joint of the rotary transformer 9 and the assembly ring 45, a communicating pipe 51 is installed in the mounting groove 46, an inlet of the communicating pipe 51 is communicated with the first liquid inlet groove 18, a fan blade 59 is installed on the main shaft 1, the fan blade 59 is located between the inner through groove 47 and the communicating pipe 51, and an extrusion column 50 matched with the communicating pipe 51 is also installed on the main shaft 1.
In this embodiment: in order to cool the high temperature gas, a communication pipe 51 is provided between the first liquid inlet tank 18 and the resolver 9. In order to facilitate the installation of the communication pipe 51 inside the resolver 9, an installation groove 46 is provided at the junction of the resolver 9 and the fitting ring 45, which are fitted to each other.
Referring to fig. 8-10, a plurality of groups of bosses 52 are arranged on the inner wall of the communicating pipe 51, a limiting ring 54 is arranged at the outlet of the communicating pipe 51, a movable valve 55 is movably arranged between the bosses 52 and the limiting ring 54, the bottom of the movable valve 55 is connected with the bosses 52 through a return spring 53, a bulge 57 matched with the extrusion column 50 is connected to the outer side of the movable valve 55, a plurality of groups of first spray holes 56 are formed in the bottom of the movable valve 55, and a plurality of groups of second spray holes 58 staggered with the first spray holes 56 are formed in the limiting ring 54.
In this embodiment: when the spindle 1 rotates the pressing column 50, the pressing column 50 presses the protrusion 57 upward. Because the first spray hole 56 and the second spray hole 58 are staggered, condensate can be sprayed into the cyclone 9 through the first liquid inlet groove 18 and the communicating pipe 51, the condensate is rapidly atomized under the action of the fan blades 59, and the atomized condensate rapidly cools the high-temperature gas entering the cyclone 9 through the air holes 43, the air permeable grooves 44, the outer air outlet grooves 48 and the guide grooves 49.
The working principle of the invention is as follows: in use, the apparatus first activates the electro-spindle and drives the spindle 1 in rotation and condensate is fed through the inlet nozzle 15 and cooler gas is fed through the inlet nozzle 17. The condensate sequentially passes through the first liquid inlet groove 18, the second liquid inlet groove 39, the third liquid inlet groove 19 and the fourth liquid inlet groove 22 to enter the first cooling cavity 13 and the second cooling cavity 14 respectively, and the condensate is discharged out of the device through the first liquid discharge groove 25, the second liquid discharge groove 26, the third liquid discharge groove 27, the fourth liquid discharge groove 28 and the liquid outlet nozzle 16 to complete circulation while taking away the temperature. The gas with lower temperature sequentially passes through the first air inlet groove 29, the second air inlet groove 30, the third air inlet groove 31 and the fourth air inlet groove 32 to enter the third cooling cavity 33, and is directly discharged to the outside from the air outlet groove 34 while taking the temperature away. When the main shaft 1 drives the fan blades 59 to rotate, negative pressure is formed inside the main housing 4, at this time, external air enters the main electric shaft through the air filter 38 and the air inlet pipeline 35, and condensate in the second cooling cavity 14 cools the air in the air inlet pipeline 35. At this time, the high-temperature gas in the main casing 4 is introduced into the interior of the resolver 9 through the double paths of the gas-permeable holes 43, the gas-permeable grooves 44 and the inner gas-permeable grooves 47, and the outer gas-permeable grooves 48 and the guide grooves 49. When the spindle 1 rotates the pressing column 50, the pressing column 50 presses the protrusion 57 upward. Because the first spray hole 56 and the second spray hole 58 are staggered, condensate can be sprayed into the cyclone 9 through the first liquid inlet groove 18 and the communicating pipe 51, the condensate is rapidly atomized under the action of the fan blades 59, and the atomized condensate rapidly cools high-temperature gas in the cyclone 9. Finally, the cooled gas is discharged to the outside through the first exhaust passage 60 and the second exhaust passage 61.
According to the invention, the main shell 4 can be subjected to liquid cooling through the matching of the liquid inlet nozzle 15, the first cooling cavity 13 and the second cooling cavity 14, and condensate is returned through the liquid outlet nozzle 16. And the air at the front pressure shell 2 of the device can be cooled by the cooperation of the air inlet nozzle 17 and the third cooling cavity 33, and the shell of the device can be cooled doubly by condensate and air. In addition to this, the inside of the main housing 4 can be communicated with the outside by the cooperation of the resolver 9, the rear bearing housing 6, and the rear nut 10 and the air flowability can be further improved. Wherein the air outside can be cooled down by the cooperation of the air inlet duct 35 and the second cooling chamber 14, and the flow rate of the air is further increased by the fan blades 59. When the main shaft 1 rotates, the extruding column 50 can intermittently extrude the moving valve 55, so that condensate in the first liquid inlet groove 18 can intermittently spray the interior of the rotary transformer 9. Under the action of the fan blades 59, the condensate is rapidly atomized, and the condensate is rapidly discharged out of the device through the first exhaust channel 60 and the second exhaust channel 61 while taking heat away. The design further improves the cooling effect and also improves the safety and the practicability of the motorized spindle with the multiple cooling structures.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. Electric main shaft with dual cooling structure, including main shaft (1), preceding press shell (2) and main casing (4), its characterized in that: the main shell (4) comprises a front bearing part (11) and a rear part (12), the front pressing shell (2) is arranged on the front side of the front bearing part (11), the rear side of the rear part (12) is connected with a rear bearing seat (6), and the other side of the rear bearing seat (6) is connected with a rear shell (7); the rear side of the rear bearing seat (6) is also connected with a rotary transformer (9), the rotary transformer (9) is positioned in the rear shell (7), the side surface of the rotary transformer (9) is also connected with a rear nut (10), and the main shaft (1) is rotatably arranged in the middle of the front pressing shell (2) and the main shell (4); a first cooling cavity (13) is formed in the outer wall of the front bearing part (11), a second cooling cavity (14) is formed in the outer wall of the rear part (12), a front cover (3) is arranged on the outer side of the front pressing shell (2), and a third cooling cavity (33) is formed between the front pressing shell (2) and the front cover (3); the outside of the rear shell (7) is provided with a liquid inlet nozzle (15), a liquid outlet nozzle (16) and an air inlet nozzle (17), the liquid inlet nozzle (15) is sequentially communicated with a second cooling cavity (14) and a first cooling cavity (13) for liquid cooling, the liquid outlet nozzle (16) is communicated with the second cooling cavity (14) and returns condensing agent, and the air inlet nozzle (17) is communicated with the third cooling cavity (33) and carries out gas cooling; a plurality of groups of ball bearings (40) are arranged in the middle of the rear bearing seat (6), space rings (41) are arranged between the ball bearings (40), rear shaft sleeves (42) are arranged on two sides of each ball bearing (40), a plurality of groups of ventilation holes (43) are formed in each space ring (41), and a plurality of groups of ventilation grooves (44) matched with the ventilation holes (43) are formed in each rear shaft sleeve (42); a plurality of groups of outer air outlet grooves (48) are formed in the rear bearing seat (6), guide grooves (49) communicated with the outer air outlet grooves (48) are formed in the outer wall of the rotary transformer (9), inner through grooves (47) communicated with the rear bearing seat (6) are formed in the bottom of the rotary transformer (9), and the guide grooves (49) are used for guiding high-temperature gas in the main shell (4) to the inside of the rotary transformer (9); a first liquid inlet groove (18) communicated with the liquid inlet nozzle (15) is formed in the rear shell (7), an assembly ring (45) is further arranged between the rotary transformer (9) and the rear nut (10), an installation groove (46) matched with each other is formed in the joint of the rotary transformer (9) and the assembly ring (45), a communicating pipe (51) is arranged in the installation groove (46), the inlet of the communicating pipe (51) is communicated with the first liquid inlet groove (18), a fan blade (59) is arranged on the main shaft (1), the fan blade (59) is positioned between the inner communication groove (47) and the communicating pipe (51), and an extrusion column (50) matched with the communicating pipe (51) is further arranged on the main shaft (1); the novel plastic extrusion device is characterized in that a plurality of groups of bosses (52) are arranged on the inner wall of the communicating pipe (51), a limiting ring (54) is arranged at the outlet of the communicating pipe (51), a movable valve (55) is movably arranged between the bosses (52) and the limiting ring (54), the bottom of the movable valve (55) is connected with the bosses (52) through a reset spring (53), the outer side of the movable valve (55) is connected with a protrusion (57) matched with the extrusion column (50), a plurality of groups of first spray holes (56) are formed in the bottom of the movable valve (55), and a plurality of groups of second spray holes (58) staggered with the first spray holes (56) are formed in the limiting ring (54).
2. An electric spindle with dual cooling structure according to claim 1, characterized in that: the inside of back bearing frame (6) seted up with the feed liquor groove two (39) of feed liquor groove one (18) intercommunication, the inside of rear portion (12) has seted up feed liquor groove three (19), feed liquor groove three (19) through feed liquor perpendicular groove one (20) with second cooling chamber (14) intercommunication, the inside of front bearing portion (11) has seted up feed liquor groove four (22), second cooling chamber (14) through flowing back perpendicular groove one (21) with feed liquor groove four (22) intercommunication, feed liquor groove four (22) through flowing back perpendicular groove two (23) with first cooling chamber (13) intercommunication.
3. An electric spindle with dual cooling structure according to claim 1, characterized in that: the inside of preceding bearing portion (11) has been seted up and has been arranged groove one (25), the flowing back groove one (25) through flowing back perpendicular groove two (24) with first cooling chamber (13) intercommunication, the inside of rear portion (12) seted up with flowing back groove two (26) of flowing back groove one (25) intercommunication, the inside of back bearing frame (6) seted up with flowing back groove three (27) of flowing back groove two (26) intercommunication, the inside of backshell (7) seted up with flowing back groove four (28) of flowing back groove three (27) intercommunication, liquid outlet mouth (16) with flowing back groove four (28) intercommunication.
4. An electric spindle with dual cooling structure according to claim 1, characterized in that: the inside of backshell (7) seted up with air inlet groove one (29) of air inlet nozzle (17) intercommunication, the inside of back bearing frame (6) seted up with air inlet groove two (30) of air inlet groove one (29) intercommunication, the inside of main casing (4) seted up with air inlet groove three (31) of air inlet groove two (30) intercommunication, the inside of preceding press shell (2) seted up with air inlet groove four (32) of air inlet groove three (31) intercommunication, air inlet groove four (32) with third cooling chamber (33) intercommunication.
5. An electric spindle with dual cooling structure according to any one of claims 1-4, characterized in that: a front sleeve (5) is mounted on the outer side of the front bearing part (11), and a shell (8) is mounted on the outer side of the rear part (12).
6. An motorized spindle with dual cooling structure as set forth in claim 5, wherein: the inside of second cooling chamber (14) is provided with multiunit admission line (35), be provided with multiunit intake pipe (36) and outlet duct (37) on admission line (35), intake pipe (36) run through shell (8) and with outside intercommunication, run through rear portion (12) of outlet duct (37) and with the inside intercommunication of main casing (4), outside of shell (8) still install with intake pipe (36) complex air cleaner (38).
7. An electric spindle with dual cooling structure according to claim 1, characterized in that: an exhaust groove (34) is formed between the front cover (3) and the main shaft (1), and the exhaust groove (34) is communicated with the third cooling cavity (33).
8. An electric spindle with dual cooling structure according to claim 1, characterized in that: the rear nut (10) is provided with a plurality of groups of exhaust channels II (61) communicated with the inside of the rear shell (7), and the bottom of the rear shell (7) is provided with a plurality of groups of exhaust channels I (60) communicated with the outside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410417203.4A CN118002809B (en) | 2024-04-09 | 2024-04-09 | Motorized spindle with dual cooling structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410417203.4A CN118002809B (en) | 2024-04-09 | 2024-04-09 | Motorized spindle with dual cooling structure |
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| CN118002809B true CN118002809B (en) | 2024-06-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000015540A (en) * | 1998-06-26 | 2000-01-18 | Niigata Eng Co Ltd | Motor built-in type main spindle device of machine tool |
| US6599066B1 (en) * | 1999-10-26 | 2003-07-29 | Makino Milling Machine Co., Ltd. | Rotating shaft device and machine tool |
| CN207074932U (en) * | 2017-03-17 | 2018-03-06 | 浙江艾精机科技股份有限公司 | A kind of new oil lubricates electro spindle |
| CN213671836U (en) * | 2020-09-01 | 2021-07-13 | 常州得恒电机有限公司 | Novel electric spindle |
| CN117340295A (en) * | 2023-10-10 | 2024-01-05 | 珠海格力电器股份有限公司 | Cooling structure, electric spindle and machine tool |
-
2024
- 2024-04-09 CN CN202410417203.4A patent/CN118002809B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000015540A (en) * | 1998-06-26 | 2000-01-18 | Niigata Eng Co Ltd | Motor built-in type main spindle device of machine tool |
| US6599066B1 (en) * | 1999-10-26 | 2003-07-29 | Makino Milling Machine Co., Ltd. | Rotating shaft device and machine tool |
| CN207074932U (en) * | 2017-03-17 | 2018-03-06 | 浙江艾精机科技股份有限公司 | A kind of new oil lubricates electro spindle |
| CN213671836U (en) * | 2020-09-01 | 2021-07-13 | 常州得恒电机有限公司 | Novel electric spindle |
| CN117340295A (en) * | 2023-10-10 | 2024-01-05 | 珠海格力电器股份有限公司 | Cooling structure, electric spindle and machine tool |
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| CN118002809A (en) | 2024-05-10 |
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