CN211638330U - Low-energy-consumption oil-gas lubrication electric spindle - Google Patents
Low-energy-consumption oil-gas lubrication electric spindle Download PDFInfo
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- CN211638330U CN211638330U CN201921940070.XU CN201921940070U CN211638330U CN 211638330 U CN211638330 U CN 211638330U CN 201921940070 U CN201921940070 U CN 201921940070U CN 211638330 U CN211638330 U CN 211638330U
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Abstract
The utility model discloses a lubricated electric main shaft of low energy consumption oil gas, it is including the steel cylinder, front axle bearing and rear bearing seat, be equipped with two at least front bearings in the front axle bearing, be equipped with the rear bearing in the rear bearing seat, be equipped with stator module in the steel cylinder, be equipped with the rotor in the stator module, the rear end of back of the body lid is equipped with two at least oil gas injection joints and an oil gas discharge joint, two at least annular oil gas inside grooves have been seted up to the inner wall of front axle bearing, oil gas injection passage communicates with one-to-one between oil gas injection joint and oil gas inside groove, it is equipped with interior spacer ring and outer spacer ring to press from both sides between two adjacent front bearings, the oil extraction through-hole has been seted up on the outer spacer ring, the oil extraction through-hole runs through in the inside and outside both sides. The utility model discloses can reduce bearing calorific capacity, do not influence the machining precision, can satisfy the big load processing requirement of low-power consumption.
Description
Technical Field
The utility model relates to an electricity main shaft especially relates to a low energy consumption oil gas lubrication electricity main shaft.
Background
The main shaft is often used for carrying out high-speed precision machining, therefore prior art is higher to the stability of main shaft, the reliability requirement, wherein, the machining precision of main shaft, bearing capacity etc. are directly influenced to the lubricating property of bearing, current main shaft generally adopts ball bearing, the big condition of calorific capacity appears easily in its working process, easy wearing and tearing simultaneously, and then influence the machining precision and the life of main shaft, it is not enough to obviously demonstrate in the processing of hypervelocity, and the stress that can bear is less, in addition, because of the partial lubricating capacity of bearing is not enough, make the consumption of electricity main shaft operation in-process higher, can't satisfy the heavy-load processing demand.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide one kind can reduce the bearing calorific capacity, do not influence the machining precision, can satisfy the low energy consumption oil gas lubrication electric main shaft of big load processing requirement.
In order to solve the technical problem, the utility model adopts the following technical scheme.
A low-energy-consumption oil-gas lubrication electric main shaft comprises a steel cylinder, wherein a front bearing seat and a rear bearing seat are respectively fixed at the front end and the rear end of the steel cylinder, at least two front bearings are arranged in the front bearing seat, a rear bearing is arranged in the rear bearing seat, a stator assembly is arranged in the steel cylinder, a rotor is arranged in the stator assembly and is rotatably connected with the front bearing seat and the rear bearing seat, the front end and the rear end of the rotor respectively penetrate through the front bearing and the rear bearing, a back cover is fixed at the rear end of the rear bearing seat, at least two oil-gas injection joints and an oil-gas discharge joint are arranged at the rear end of the back cover, at least two annular oil-gas inner grooves are formed in the inner wall of the front bearing seat, the oil-gas inner grooves are aligned with the outer ring of the front bearing, and at least two oil-gas injection channels, the oil-gas injection channel is communicated between the oil-gas injection joint and the oil-gas inner groove in a one-to-one correspondence manner, an inner spacer ring and an outer spacer ring are clamped between two adjacent front bearings, the inner spacer ring is clamped between the inner rings of the two front bearings, the outer spacer ring is clamped between the outer rings of the two front bearings, a gap is formed between the inner spacer ring and the outer spacer ring, an oil discharge through hole is formed in the outer spacer ring and penetrates through the inner side and the outer side of the outer spacer ring, the oil-gas discharge channel is communicated between the oil discharge through hole and the oil-gas discharge joint, oil gas injected by the oil-gas injection joint is injected into the oil-gas inner groove through the oil-gas injection channel, so that an oil film is formed between the outer ring of the front bearing and the front bearing seat, then enters between the outer ring and the inner ring of the front bearing, and then passes through the gap between the inner spacer ring and the outer spacer, And the oil gas discharge channel and the oil gas discharge joint are discharged.
Preferably, the front side and the rear side of the oil gas inner groove are respectively provided with a sealing ring groove, the sealing ring grooves are arranged in the front bearing seat, a front bearing sealing ring is arranged in the sealing ring grooves, and the front bearing sealing ring is clamped between the front bearing and the front bearing seat.
Preferably, the rear end of the front bearing housing is formed with an inner step portion.
Preferably, a bearing pressure plate is fixed to the front end of the front bearing seat and abuts against the outer ring of the front bearing, and an oil collecting groove is formed in the rear end face of the bearing pressure plate and faces to the space between the inner ring and the outer ring of the front bearing.
Preferably, the front end of bearing clamp plate is fixed with the shield, the front end of shield is fixed with the ring and spouts the board, the cover is equipped with dust ring and waterproof cover on the rotor, waterproof cover is located the front end of dust ring, dust ring and waterproof cover all are located the bearing clamp plate the dust cover with the inboard of board is spouted to the ring, inlay on spouting the board and be equipped with a plurality of nozzles, a plurality of nozzles are followed the circumference evenly distributed that the board was spouted to the ring, be equipped with the ring joint that spouts on the back of the body lid, rear axle bearing, steel cylinder, front axle bearing, bearing clamp plate with it spouts the water course to set up the ring that communicates in proper order in the shield, a plurality of nozzles all communicate in the water course is spouted to the ring.
Preferably, the ring has been seted up to the lateral wall of front axle bearing and has been spouted the aqua storage tank, the ring spout the aqua storage tank surround in the front axle bearing, the outside cover of front axle bearing is equipped with the water-cooling overcoat, the water-cooling overcoat cover in the aqua storage tank is spouted to the ring, just the aqua storage tank is spouted to the ring concatenate in on the ring spouts the water course.
Preferably, an oil cylinder sleeve is fixed at the rear end of the back cover, an oil cylinder and an oil cylinder cover are arranged in the oil cylinder sleeve and are in sliding connection, an oil cylinder cover is fixed at the rear end of the oil cylinder, a piston is arranged in the oil cylinder, a hollow piston rod is formed at the center of the piston, the front end and the rear end of the piston rod respectively penetrate through the oil cylinder sleeve and the oil cylinder cover, an annular oil storage tank is formed in the outer side wall of the oil cylinder, the oil cylinder sleeve covers the oil storage tank, a first oil injection joint and a second oil injection joint are fixed on the back cover, a first oil injection channel and a second oil injection channel are formed in the oil cylinder sleeve, the first oil injection joint, the first oil injection channel, the oil storage tank and the rear cavity of the piston are communicated, the second oil injection joint, the second oil injection channel and the front cavity of the piston are communicated, a pull rod penetrates through the rotor, and the rear end of, and an abutting flange is formed on the part of the pull rod, which is positioned in the back cover, is aligned with the front end of the piston rod, when the first oil injection joint or the second oil injection joint is injected with hydraulic oil, the piston is driven to move forwards or backwards, and thrust is applied to the pull rod or is removed from the pull rod by virtue of the piston rod.
Preferably, the front end of pull rod is connected with handle of a knife subassembly, the cover is equipped with pull rod slider and the two sliding connection on the pull rod, the cover is equipped with the multilayer dish spring on the pull rod, be fixed with dish spring backing ring on the pull rod, dish spring backing ring is close to the front end of pull rod, the multilayer dish spring presss from both sides respectively and locates the pull rod slider with between the butt flange and the pull rod slider with between the dish spring backing ring.
Preferably, a water-cooling inner sleeve is arranged in the steel cylinder, the water-cooling inner sleeve is sleeved on the outer side of the stator assembly, a plurality of water-separating rings are formed on the outer side wall of the water-cooling inner sleeve, the water-separating rings are abutted against the inner wall of the steel cylinder, first openings are formed in the water-separating rings, the first openings of two adjacent water-separating rings are symmetrically arranged on two sides of the water-cooling inner sleeve, at least one annular flange is arranged between two adjacent water-separating rings, a gap is formed between the annular flange and the inner wall of the steel cylinder, two second openings are formed in the annular flange, the two second openings are symmetrically arranged on two sides of the annular flange, the outer side wall of the water-cooling inner sleeve forms a stator cooling water channel through the water-separating rings, the first openings, the annular flange and the second openings, a cooling liquid injection joint and a cooling liquid discharge joint are arranged on the back cover, the cooling device is characterized in that a front bearing cooling water channel is formed in the outer side wall of the front bearing seat, a rear bearing chamber is arranged in the rear bearing seat, a rear bearing is arranged in the rear bearing chamber, a rear bearing cooling water channel is formed in the outer side wall of the rear bearing chamber, cooling liquid injection channels which are communicated in sequence are formed in the back cover, the rear bearing seat, the steel cylinder and the front bearing seat, and the cooling liquid injection joints, the cooling liquid injection channels, the front bearing cooling water channel, the stator cooling water channel, the rear bearing cooling water channel and the cooling liquid discharge joints are communicated in sequence.
Preferably, the outside cover of rotor is equipped with rotor core, embedded being equipped with a plurality of arc piece magnets of rotor core's lateral wall, a plurality of arc piece magnets are followed rotor core's circumference evenly distributed, the both sides of every arc piece magnet are inlayed respectively and are equipped with oblique magnet, are located the oblique magnet of arc piece magnet both sides is "eight" shape and distributes, inlays between two adjacent oblique magnets and is equipped with radial magnet along radial extension.
The utility model discloses an among the low energy consumption oil gas lubrication electricity main shaft the inner wall of front bearing seat has set up the oil gas inside groove, moreover the oil gas inside groove with the front bearing one-to-one works as after oil gas injection joint pours into the oil-gas mixture fluid into, oil gas fluid via run through in the oil gas injection passageway of back of the body lid, back bearing seat, steel cylinder and front bearing seat pours into the oil gas inside groove into, makes the outer loop of front bearing with form the oil film between the front bearing seat, simultaneously oil gas fluid via in the oil gas inside groove through-hole on the front bearing outer ring pours into between the interior outer ring of front bearing, via again interior spacer with gap between the outer spacer the oil gas escape way with oil gas escape joint discharges. Based on the principle, the front bearing is internally and externally contacted with the oil-gas mixed fluid, when the main shaft runs, because the physical characteristics of oil and gas are different, after the mixed compressed air and lubricating oil enter the front bearing, the bearing is sufficiently lubricated, the friction between the steel balls inside the bearing and the inner ring and the outer ring of the bearing can be effectively reduced, the heat productivity of the bearing is greatly reduced, the machining precision is not affected, the service life of the main shaft can be prolonged, the power consumption in the running process of the electric main shaft is greatly reduced, and the application requirement is well met.
Drawings
Fig. 1 is a partial sectional view of an electric spindle according to the present invention;
fig. 2 is a partial sectional view of the electric spindle of the present invention;
fig. 3 is a first cross-sectional view of the front end structure of the electric spindle of the present invention;
fig. 4 is a second cross-sectional view of the front end structure of the electric spindle of the present invention;
FIG. 5 is a first cross-sectional view of the front bearing mount;
FIG. 6 is a second cross-sectional view of the front bearing mount;
FIG. 7 is a third cross-sectional view of the front bearing mount;
FIG. 8 is a cross-sectional view of a portion of the cylinder;
FIG. 9 is a structural view of a water-cooled inner sleeve;
fig. 10 is an end face structural view of the rotor core;
FIG. 11 is a cross-sectional view of the rotor;
FIG. 12 is a cross-sectional view of the drawbar;
FIG. 13 is a perspective view of the drawbar;
FIG. 14 is a view of the construction of a disc spring grommet;
FIG. 15 is a view showing the construction of the dust cap and the annular nozzle plate;
FIG. 16 is an exploded view of the back cover portion;
fig. 17 is a cross-sectional view of the back cover portion.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a lubricated electric main shaft of low energy consumption oil gas combines that fig. 1 to 17 are shown, and it is including steel cylinder 1, both ends are fixed with front axle bearing 2 and rear axle bearing 3 respectively around the steel cylinder 1, be equipped with two at least fore bearings 20 in the front axle bearing 2, be equipped with rear bearing 30 in the rear axle bearing 3, be equipped with stator module 10 in the steel cylinder 1, be equipped with rotor 4 and the two in stator module 10 and rotate the connection, both ends are passed respectively around rotor 4 the fore bearings 20 with rear bearing 30, the rear end of rear axle bearing 3 is fixed with back lid 5, the rear end of back lid 5 is equipped with two at least oil gas injection joints and an oil gas discharge joint, two at least annular oil gas inside grooves 22 have been seted up to the inner wall of front axle bearing 2, oil gas inside groove 22 with the outer loop of fore bearings 20 aligns, back lid 5, back lid, At least two oil gas injection channels 23 and an oil gas discharge channel 26 which are sequentially communicated are arranged in the rear bearing seat 3, the steel cylinder 1 and the front bearing seat 2, the oil gas injection channels 23 are correspondingly communicated between the oil gas injection joint and the oil gas inner groove 22 one by one, an inner spacer ring 24 and an outer spacer ring 25 are clamped between two adjacent front bearings 20, the inner spacer ring 24 is clamped between inner rings of the two front bearings 20, the outer spacer ring 25 is clamped between outer rings of the two front bearings 20, a gap is arranged between the inner spacer ring 24 and the outer spacer ring 25, an oil discharge through hole 250 is arranged on the outer spacer ring 25, the oil discharge through hole 250 penetrates through the inner side and the outer side of the outer spacer ring 25, the oil gas discharge channel 26 is communicated between the oil discharge through hole 250 and the oil gas discharge joint, and oil gas injected by the oil gas injection joint is injected into the oil gas inner groove 22 through the oil gas injection channels 23, an oil film is formed between the outer ring of the front bearing 20 and the front bearing seat 2, and then enters between the outer ring and the inner ring of the front bearing 20, and is discharged through a gap between the inner spacer ring 24 and the outer spacer ring 25, the oil-gas discharge passage 26 and the oil-gas discharge joint.
In the electric spindle, the inner wall of the front bearing seat 2 is provided with oil-gas inner grooves 22, the oil-gas inner grooves 22 correspond to the front bearings 20 one by one, when the oil-gas injection joint injects oil-gas mixed fluid, the oil-gas mixed fluid is injected into the oil-gas inner grooves 22 through oil-gas injection passages 23 penetrating through the back cover 5, the back bearing seat 3, the steel cylinder 1 and the front bearing seat 2, so that an oil film is formed between the outer ring of the front bearing 20 and the front bearing seat 2, and the oil-gas mixed fluid in the oil-gas inner grooves 22 is injected between the inner ring and the outer ring of the front bearing 20 through holes in the outer ring of the front bearing 20 and is discharged through gaps between the inner ring 24 and the outer ring 25, the oil-gas discharge passage 26 and the oil-gas discharge joint. Based on the principle, the front bearing 20 is contacted with the oil-gas mixed fluid inside and outside, when the main shaft runs, because the physical characteristics of oil and gas are different, after the mixed compressed air and lubricating oil enter the front bearing, the bearing is lubricated enough, the friction between the steel balls inside the bearing and the inner and outer rings of the bearing can be effectively reduced, the heat productivity of the bearing is greatly reduced, the machining precision is not affected, the service life of the main shaft can be prolonged, the power consumption in the running process of the electric main shaft is greatly reduced, and the application requirements are well met.
In order to seal the front side and the rear side of the oil gas inner groove 22, in this embodiment, the front side and the rear side of the oil gas inner groove 22 are respectively provided with a seal ring groove 220, the seal ring groove 220 is opened inside the front bearing seat 2, a front bearing seal ring is installed in the seal ring groove 220, and the front bearing seal ring is clamped between the front bearing 20 and the front bearing seat 2.
In order to abut the front bearing 20, so that the front bearing 20 is tightly combined with the front bearing seat 2, in the embodiment, an inner step portion 21 is formed at the rear end of the front bearing seat 2, and the rear end of the front bearing 20 abuts against the inner step portion 21.
In order to facilitate the collection of the oil-gas mixed fluid at the front end, in this embodiment, a bearing pressure plate 27 is fixed at the front end of the front bearing seat 2, the bearing pressure plate 27 abuts against the outer ring of the front bearing 20, an oil collecting groove 270 is formed in the rear end surface of the bearing pressure plate 27, and the oil collecting groove 270 faces between the inner ring and the outer ring of the front bearing 20.
As a preferable mode, a dust cover 271 is fixed at the front end of the bearing press plate 27, a ring spray plate 272 is fixed at the front end of the dust cover 271, a dust ring 273 and a waterproof cover 274 are sleeved on the rotor 4, the waterproof cover 274 is located at the front end of the dust ring 273, the dust ring 273 and the waterproof cover 274 are both located at the inner sides of the bearing press plate 27, the dust cover 271 and the ring spray plate 272, a plurality of nozzles are embedded on the ring spray plate 272 and uniformly distributed along the circumferential direction of the ring spray plate 272, a ring spray joint is arranged on the back cover 5, ring spray channels 275 which are sequentially communicated are formed in the back cover 5, the back bearing seat 3, the steel cylinder 1, the front bearing seat 2, the bearing press plate 27 and the dust cover 271, and the plurality of nozzles are all communicated with the ring spray channel 275. The structure can form annular jet flow at the front end of the main shaft, can effectively remove dust and scraps in a machining area and the like, and further improves the machining precision.
In order to guarantee that the ring spouts a plurality of blowout that last simultaneously of efflux, and only need a water filling port, this embodiment plays the effect of keeping in to the ring water spray, specifically indicates, the lateral wall of front axle bearing 2 has been seted up the ring and has been spouted aqua storage tank 276, the ring spout aqua storage tank 276 encircle in front axle bearing 2, the outside cover of front axle bearing 2 is equipped with water-cooling overcoat 28, water-cooling overcoat 28 cover in the ring spouts aqua storage tank 276, just the ring spouts aqua storage tank 276 concatenate in on the ring water spray 275.
As an optimal structure, the rear end of the back cover 5 is fixed with an oil cylinder sleeve 60, an oil cylinder 61 and a sliding connection between the oil cylinder and the oil cylinder sleeve 60 are arranged in the oil cylinder sleeve 60, an oil cylinder cover 62 is fixed at the rear end of the oil cylinder 61, a piston 63 is arranged in the oil cylinder 61, a hollow piston rod 64 is formed at the center of the piston 63, the front end and the rear end of the piston rod 64 respectively penetrate through the oil cylinder sleeve 60 and the oil cylinder cover 62, an annular oil storage groove 610 is formed in the outer side wall of the oil cylinder 61, the oil cylinder sleeve 60 covers the oil storage groove 610, a first oil injection joint 50 and a second oil injection joint 51 are fixed on the back cover 5, a first oil injection channel 600 and a second oil injection channel 601 are formed in the oil cylinder sleeve 60, the first oil injection joint 50, the first oil injection channel 600, the oil storage groove 610 and the rear cavity of the piston 63 are communicated, and, The second oil injection channel 601 is communicated with the front cavity of the piston 63, a pull rod 7 penetrates through the rotor 4, the rear end of the pull rod 7 penetrates through the piston rod 64, an abutting flange 70 is formed on the portion, located in the back cover 5, of the pull rod 7, the abutting flange 70 is aligned with the front end of the piston rod 64, when the first oil injection joint 50 or the second oil injection joint 51 is injected with hydraulic oil, the piston 63 is driven to move forwards or backwards, and thrust on the pull rod 7 is applied or removed through the piston rod 64. In the above structure, the oil injected by the first oil injection joint 50 or the second oil injection joint 51 is injected into the rear end chamber of the piston 63 through multiple turns and the side part, so that the oil injection mode avoids the impact of the oil pressure on the piston 63, and further realizes static pressure, and the piston 63 can smoothly push the pull rod 7 under the action of the static pressure, and compared with the prior art, the adverse conditions of shaking, abrasion and the like of the electric spindle caused by impact force can be avoided.
Regarding the concrete structure of pull rod, in this embodiment, the front end of pull rod 7 is connected with handle of a knife subassembly 8, the cover is equipped with pull rod slider 71 and both sliding connection on the pull rod 7, the cover is equipped with multilayer dish spring 72 on the pull rod 7, be fixed with dish spring backing ring 73 on the pull rod 7, dish spring backing ring 73 is close to the front end of pull rod 7, multilayer dish spring 72 press from both sides respectively and locate pull rod slider 71 with between the butt flange 70 and pull rod slider 71 with between the dish spring backing ring 73.
In order to further improve the cooling effect of the stator assembly 10, in this embodiment, a water-cooling inner sleeve 11 is disposed in the steel cylinder 1, the water-cooling inner sleeve 11 is sleeved outside the stator assembly 10, a plurality of water-isolating rings 110 are formed on the outer side wall of the water-cooling inner sleeve 11, the water-isolating rings 110 are abutted to the inner wall of the steel cylinder 1, first openings are formed on the water-isolating rings 110, the first openings of two adjacent water-isolating rings 110 are symmetrically disposed on two sides of the water-cooling inner sleeve 11, at least one annular flange 111 is disposed between two adjacent water-isolating rings 110, a gap is disposed between the annular flange 111 and the inner wall of the steel cylinder 1, two second openings 112 are formed on the annular flange 111, the two second openings 112 are symmetrically disposed on two sides of the annular flange 111, and the outer side wall of the water-cooling inner sleeve 11 forms a stator cooling water channel 113 through the water-isolating rings 110, the first openings, the annular flange 111 and the second openings 112, be equipped with coolant liquid injection joint 52 and coolant liquid discharge joint on the back of the body lid 5, front bearing cooling water course 29 has been seted up to the lateral wall of front bearing frame 2, be equipped with rear bearing chamber 31 in the rear bearing 3, rear bearing 30 locates in the rear bearing chamber 31, rear bearing cooling water course 32 has been seted up to the lateral wall of rear bearing chamber 31, set up the coolant liquid injection passageway 12 that communicates in proper order in back of the body lid 5, rear bearing frame 3, steel cylinder 1 and the front bearing frame 2, coolant liquid injection joint 52, coolant liquid injection passageway 12, front bearing cooling water course 29, stator cooling water course 113, rear bearing cooling water course 32 and coolant liquid discharge joint communicate in proper order. In the above structure, under the action of the water-isolating rings 110, the length of the stator cooling water channel 113 can be extended, and under the action of the annular flange 111, the contact area between the cooling water and the water-cooling inner sleeve 11 is effectively increased, so that the heat exchange capacity is improved, and the stator part can be rapidly cooled.
As a preferable mode, a rotor core 40 is sleeved outside the rotor 4, a plurality of arc magnets 41 are embedded in the side wall of the rotor core 40, the plurality of arc magnets 41 are uniformly distributed along the circumferential direction of the rotor core 40, oblique magnets 42 are respectively embedded on both sides of each arc magnet 41, the oblique magnets 42 on both sides of each arc magnet 41 are distributed in an eight shape, and a radial magnet 43 extending along the radial direction is embedded between two adjacent oblique magnets 42.
In order to fix the rotor core 40 to the rotor 4, in the present embodiment, a front balance ring 44 and a rear balance ring 45 are fixed to the rotor 4, and the rotor core 40 is fixed between the front balance ring 44 and the rear balance ring 45.
As a preferable structure, a displacement sensor 278 is fixed on the front end surface of the dust cover 271, the sensing end of the displacement sensor 278 faces the dust ring 273, an installation opening 279 is opened on the ring nozzle plate 272, a sensor cover plate 280 covers the installation opening 279, and the sensor cover plate 280 and the ring nozzle plate 272 are fixedly connected through screws. The thermal deformation degree of the rotor can be judged in time through the data fed back by the displacement sensor 278, which is helpful for users to take corresponding measures in time.
In this embodiment, the rear end of the oil cylinder sleeve 60 is fixed with the tail cover 9, 3 proximity switches 90 which are sequentially arranged from front to back are arranged on the side portion of the tail cover 9 in a penetrating mode, the rear end of the pull rod 7 is connected with a hollow rear connecting rod 91, a sensing flange 92 is formed on the outer side of the rear connecting rod 91, the sensing end of each proximity switch 90 faces the sensing flange 92, a rotary joint 93 is fixed at the rear end of the tail cover 9, and the rotary joint 93, the rear connecting rod 91 and the central air passage 74 of the pull rod 7 are sequentially communicated. Through the data fed back by the 3 proximity switches 90, the control system of the electric spindle can judge whether the currently executed action of the electric spindle is a tool releasing action or a tool clamping action, or whether the current action is a tool-free state, which is helpful for a user to obtain the state information in time.
The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A low-energy-consumption oil-gas lubrication electric spindle is characterized by comprising a steel cylinder, wherein a front bearing seat and a rear bearing seat are respectively fixed at the front end and the rear end of the steel cylinder, at least two front bearings are arranged in the front bearing seat, a rear bearing is arranged in the rear bearing seat, a stator assembly is arranged in the steel cylinder, a rotor is arranged in the stator assembly and is rotatably connected with the stator assembly, the front end and the rear end of the rotor respectively penetrate through the front bearing and the rear bearing, a back cover is fixed at the rear end of the rear bearing seat, at least two oil-gas injection joints and an oil-gas discharge joint are arranged at the rear end of the back cover, at least two annular oil-gas inner grooves are formed in the inner wall of the front bearing seat, the oil-gas inner grooves are aligned with the outer ring of the front bearing, and at least two oil-gas injection passages and an oil-gas discharge passage which, the oil-gas injection channel is communicated between the oil-gas injection joint and the oil-gas inner groove in a one-to-one correspondence manner, an inner spacer ring and an outer spacer ring are clamped between two adjacent front bearings, the inner spacer ring is clamped between the inner rings of the two front bearings, the outer spacer ring is clamped between the outer rings of the two front bearings, a gap is formed between the inner spacer ring and the outer spacer ring, an oil discharge through hole is formed in the outer spacer ring and penetrates through the inner side and the outer side of the outer spacer ring, the oil-gas discharge channel is communicated between the oil discharge through hole and the oil-gas discharge joint, oil gas injected by the oil-gas injection joint is injected into the oil-gas inner groove through the oil-gas injection channel, so that an oil film is formed between the outer ring of the front bearing and the front bearing seat, then enters between the outer ring and the inner ring of the front bearing, and then passes through the gap between the inner spacer ring and the outer spacer, And the oil gas discharge channel and the oil gas discharge joint are discharged.
2. The low-energy-consumption oil-gas lubrication electric spindle according to claim 1, wherein sealing ring grooves are respectively formed in the front side and the rear side of the oil-gas inner groove, the sealing ring grooves are formed in the front bearing seat, a front bearing sealing ring is installed in each sealing ring groove, and the front bearing sealing ring is clamped between the front bearing and the front bearing seat.
3. The low energy consumption gas-oil lubricated electric spindle according to claim 1, wherein the rear end of the front bearing housing is formed with an inner step portion.
4. The low-energy-consumption oil-gas lubrication electric spindle as claimed in claim 1, wherein a bearing pressure plate is fixed to the front end of the front bearing seat, the bearing pressure plate abuts against the outer ring of the front bearing, and an oil collecting groove is formed in the rear end face of the bearing pressure plate and faces between the inner ring and the outer ring of the front bearing.
5. The low-energy-consumption oil-gas lubrication electric spindle according to claim 4, wherein a dust cover is fixed at the front end of the bearing pressing plate, a ring spraying plate is fixed at the front end of the dust cover, a dust ring and a waterproof cover are sleeved on the rotor, the waterproof cover is located at the front end of the dust ring, the dust ring and the waterproof cover are both located on the inner sides of the bearing pressing plate, the dust cover and the ring spraying plate, a plurality of nozzles are embedded on the ring spraying plate and evenly distributed along the circumferential direction of the ring spraying plate, a ring spraying joint is arranged on the back cover, and sequentially communicated ring spraying channels are formed in the back cover, the back bearing seat, the steel cylinder, the front bearing seat, the bearing pressing plate and the dust cover and are all communicated with the ring spraying channels.
6. The low-energy-consumption oil-gas lubrication electric spindle as claimed in claim 5, wherein a ring-spraying water storage tank is formed in the outer side wall of the front bearing seat, the ring-spraying water storage tank surrounds the front bearing seat, a water-cooling jacket is sleeved on the outer side of the front bearing seat, the water-cooling jacket covers the ring-spraying water storage tank, and the ring-spraying water storage tank is connected to the ring-spraying water channel in series.
7. The low-energy-consumption oil-gas lubrication electric spindle as claimed in claim 1, wherein an oil cylinder sleeve is fixed at the rear end of the back cover, an oil cylinder is arranged in the oil cylinder sleeve and is in sliding connection with the oil cylinder cover, an oil cylinder cover is fixed at the rear end of the oil cylinder, a piston is arranged in the oil cylinder, a hollow piston rod is formed at the center of the piston, the front end and the rear end of the piston rod respectively penetrate through the oil cylinder sleeve and the oil cylinder cover, an annular oil storage groove is formed in the outer side wall of the oil cylinder, the oil cylinder sleeve covers the oil storage groove, a first oil injection joint and a second oil injection joint are fixed on the back cover, a first oil injection channel and a second oil injection channel are formed in the oil cylinder sleeve, the first oil injection joint, the first oil injection channel, the oil storage groove are communicated with the rear cavity of the piston, and the second oil injection joint and the second oil injection channel are communicated with the, the rotor is internally provided with a pull rod in a penetrating manner, the rear end of the pull rod penetrates through the piston rod, a butt flange is formed on the part of the pull rod, which is positioned in the back cover, and the butt flange is aligned with the front end of the piston rod, when the first oil injection joint or the second oil injection joint injects hydraulic oil, the piston is driven to move forwards or backwards, and thrust is applied to the pull rod or the thrust to the pull rod is removed by means of the piston rod.
8. The low-energy-consumption oil-gas lubrication electric spindle as claimed in claim 7, wherein a handle assembly is connected to the front end of the pull rod, a pull rod slider is sleeved on the pull rod and is in sliding connection with the pull rod slider, a plurality of layers of disc springs are sleeved on the pull rod, a disc spring backing ring is fixed on the pull rod and is close to the front end of the pull rod, and the plurality of layers of disc springs are respectively clamped between the pull rod slider and the abutting flange and between the pull rod slider and the disc spring backing ring.
9. The low-energy-consumption oil-gas lubrication electric spindle according to claim 1, wherein a water-cooling inner sleeve is disposed in the steel cylinder, the water-cooling inner sleeve is sleeved outside the stator assembly, a plurality of water-isolating rings are formed on an outer side wall of the water-cooling inner sleeve, the water-isolating rings abut against an inner wall of the steel cylinder, first openings are formed in the water-isolating rings, the first openings of two adjacent water-isolating rings are symmetrically disposed on two sides of the water-cooling inner sleeve, at least one annular flange is disposed between two adjacent water-isolating rings, a gap is formed between the annular flange and the inner wall of the steel cylinder, two second openings are formed in the annular flange, the two second openings are symmetrically disposed on two sides of the annular flange, and a stator cooling water channel is formed on an outer side wall of the water-cooling inner sleeve by the water-isolating rings, the first openings, the annular flange and the second openings, the back of the body is covered and is equipped with coolant liquid injection joint and coolant liquid discharge joint, the front bearing cooling water course has been seted up to the lateral wall of front bearing frame, be equipped with the rear bearing room in the rear bearing frame, the rear bearing is located in the rear bearing room, rear bearing cooling water course has been seted up to the lateral wall of rear bearing room, back of the body lid, rear bearing frame, steel cylinder and front bearing frame have seted up the coolant liquid injection channel that communicates in proper order, coolant liquid injection joint, coolant liquid injection channel, front bearing cooling water course, stator cooling water course, rear bearing cooling water course and coolant liquid discharge joint communicate in proper order.
10. The low-energy-consumption oil-gas lubrication electric spindle according to claim 1, wherein a rotor core is sleeved outside the rotor, a plurality of arc-piece magnets are embedded in the side wall of the rotor core and evenly distributed along the circumferential direction of the rotor core, oblique magnets are embedded on two sides of each arc-piece magnet respectively, the oblique magnets on two sides of each arc-piece magnet are distributed in an eight shape, and a radial magnet extending in the radial direction is embedded between two adjacent oblique magnets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940070.XU CN211638330U (en) | 2019-11-10 | 2019-11-10 | Low-energy-consumption oil-gas lubrication electric spindle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921940070.XU CN211638330U (en) | 2019-11-10 | 2019-11-10 | Low-energy-consumption oil-gas lubrication electric spindle |
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| CN211638330U true CN211638330U (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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2019
- 2019-11-10 CN CN201921940070.XU patent/CN211638330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |