WO2015100940A1 - Électro-broche à haute puissance et à grande vitesse - Google Patents

Électro-broche à haute puissance et à grande vitesse Download PDF

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Publication number
WO2015100940A1
WO2015100940A1 PCT/CN2014/079279 CN2014079279W WO2015100940A1 WO 2015100940 A1 WO2015100940 A1 WO 2015100940A1 CN 2014079279 W CN2014079279 W CN 2014079279W WO 2015100940 A1 WO2015100940 A1 WO 2015100940A1
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WO
WIPO (PCT)
Prior art keywords
passage
bearing
oil
shaft
assembly
Prior art date
Application number
PCT/CN2014/079279
Other languages
English (en)
Chinese (zh)
Inventor
汤秀清
Original Assignee
广州市昊志机电股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州市昊志机电股份有限公司 filed Critical 广州市昊志机电股份有限公司
Publication of WO2015100940A1 publication Critical patent/WO2015100940A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/12—Arrangements for cooling or lubricating parts of the machine
    • B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
    • B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means

Definitions

  • the present invention relates to a high-power, high-speed electric spindle that is applied to the field of machining.
  • An electric spindle is a commonly used device for machining, and generally includes a body and a shaft core assembly.
  • the shaft core assembly is installed inside the body.
  • the internal stator of the body When the electric spindle is working, the internal stator of the body generates a magnetic field around the rotor of the shaft core assembly, so that the shaft core assembly rotates at a high speed, and the upper shaft 7 seat and the lower shaft 7 seat are fixed on the body.
  • the two ends of the shaft core assembly are respectively connected to the upper bearing housing and the lower bearing housing through the upper shaft and the lower shaft.
  • the high-speed rotation of the electric spindle mainly depends on the upper bearing and the lower bearing of the bearing housing and the lower bearing seat at both ends of the shaft core, and the lubricating oil is filled between the inner ring and the outer ring of the upper bearing and the lower bearing to ensure the electric spindle
  • the shaft core rotates at a high speed.
  • This kind of lubrication requires high performance of the grease. After the grease is used for a long time, the lubrication effect is not ideal enough to affect the rotation speed of the electric spindle. In order to improve the rotation efficiency of the electric spindle, The existing improvements are achieved by improving the performance of the grease, and therefore, the improvement effect is limited.
  • the current cooling technology of high-speed electric spindles is usually cooled on the body of the electric spindle to reduce the temperature of the body and the surface of the shaft core. The cooling effect of this cooling method is limited, for some power spindles. Due to the high rotation rate of the core, only the surface cooling of the body can not meet the requirements of the use of high-power electric spindles.
  • an object of the present invention is to provide a high-power high-speed electric spindle for improving the lubrication effect of a bearing, thereby improving the rotational efficiency of the shaft core.
  • the present invention uses the following technical solutions: a high-power high-speed electric spindle, including,
  • the body assembly includes a body, an upper bearing assembly mounted on an upper portion of the body, a lower bearing assembly mounted on a lower portion of the body, and an end cover coupled to a lower portion of the lower bearing assembly;
  • the shaft core is connected to the inside of the machine body, and the upper end portion is pivotally connected to the upper bearing seat assembly through the upper bearing, and the lower end portion is pivotally connected to the lower shaft 7 seat assembly through the lower shaft 7, and the lower end surface of the shaft core forms a matching with the upper end surface of the cutter Abutting surface; a pulling claw attached to the lower end of the shaft core for attaching the cutter; a drawbar penetrating inside the shaft core and movable up and down along the axial direction of the shaft core, the lower end portion of the pull rod having a pressing claw for pressing a flange for opening the claw, an elastic member disposed between the tie rod and the shaft core, the elastic member for providing an elastic stress for pressing the tie rod upward; the inner ring and the outer ring of the inner bearing and the lower bearing are disposed on the body
  • the lower bearing inlet oil and gas passage communicating with the gap between the rings, and the lower end of the inner bearing and the lower bearing inner ring and the outer ring are connected by the 7 oil and gas passages,
  • the passage extends to the outer side of the body assembly to form a lower shaft 7 inlet port and a lower shaft outlet port respectively; the body assembly is provided with an upper bearing end having an inner end connected to a gap between the inner ring and the outer ring of the upper bearing.
  • Oil and gas channel An upper shaft oil and gas passage communicating with a gap between the inner ring and the outer ring of the upper bearing, the upper shaft 7 inlet oil passage and the upper shaft 7 oil and gas passage extending to the outer side of the body assembly respectively form an upper bearing oil inlet Mouth and upper bearing oil mouth.
  • the shaft core is pivotally connected to the upper end portion of the lower bearing housing assembly through a middle bearing;
  • the central body is provided with a middle shaft 7 inlet and outlet passage communicating with a gap between the inner ring and the outer ring of the middle shaft, and an inner end portion
  • the middle shaft 7 out of the oil and gas passage communicating with the gap between the inner ring and the outer ring of the middle shaft 7, the middle bearing oil inlet passage and the middle bearing oil and gas passage extending to the outer body assembly
  • the sides form a middle bearing oil inlet and a middle bearing oil outlet respectively.
  • the pull rod is provided with a cooling passage extending from the upper end surface to the lower end surface; the high power book
  • the electric power spindle further includes a rotary joint assembly including a cylinder mounted on an upper portion of the body, a piston mounted in the cylinder for pressing the pull rod downward, and a movable rotating shaft that is threaded inside the piston, the rotary shaft assembly
  • the lower end portion of the rotating shaft is synchronously coupled to the upper end portion of the tie rod;
  • the rotating shaft is provided with a cooling flow passage extending from the upper end surface thereof to the lower end surface, the upper end portion of the cooling flow passage forms a coolant inlet, and the lower end portion cools the tie rod
  • the channels are connected.
  • the lower end of the rotating shaft is connected to the upper end of the pull rod, and a sealing ring is disposed at a joint of the rotating shaft and the pull rod.
  • the high-power high-speed electric spindle further includes an air blowing passage, the air blowing passage includes a first blowing air passage communicating with an external air source on the body, and a second blowing on the lower bearing housing assembly communicating with the first blowing air passage.
  • the air passage is a third blowing passage located on the end cover. The third blowing passage has one end communicating with the second blowing passage and the other end extending to a gap where the end cover is engaged with the shaft core.
  • the high-power high-speed electric spindle further includes a gas detecting passage including a first air flow passage disposed on the lower bearing housing assembly, a second air flow passage disposed on the shaft core, and the first air flow passage in the lower bearing housing assembly
  • a gas detecting passage including a first air flow passage disposed on the lower bearing housing assembly, a second air flow passage disposed on the shaft core, and the first air flow passage in the lower bearing housing assembly
  • the inlet formed on the outer surface is connected to the external air source Passing, the outlet of the second air flow passage extends to the mating surface of the shaft core, the outlet of the first air flow passage and the inlet of the second air flow passage are oppositely disposed;
  • the sliding sleeve is slidably installed between the lower bearing housing assembly and the shaft core, a sliding hole is arranged on the sliding sleeve; a switching mechanism is used for driving the sliding sleeve to move axially to drive the through hole to communicate with the first airflow
  • the open exit position of the track moves between a closed position that is offset from the exit of the first air flow path.
  • the switch mechanism includes a third air flow passage disposed on the lower bearing housing assembly and a spring, and the third air flow passage is formed at an inlet formed on an outer surface of the lower bearing housing assembly to communicate with an external air source; the lower bearing housing assembly is internally provided with a sliding sleeve An inner axially sliding movable chamber, the outlet of the third air flow passage is electrically connected to the lower portion of the movable chamber, and the spring is defined between the top end portion of the sliding sleeve and the lower bearing housing assembly and is configured to provide a sliding sleeve downward The elastic stress of the top pressure.
  • a plurality of check valves are disposed on the shaft core at the inlet of the second air flow passage, and the output ends of the plurality of check valves are toward the outlet of the second air flow passage.
  • the lower bearing housing assembly includes a movable lower heat conducting sleeve sleeved outside the shaft core, the outer surface of the lower heat conducting sleeve is provided with a lower annular groove, and the upper bearing housing assembly includes a movable sleeve that is thermally conductive on the outside of the shaft core.
  • the upper surface of the upper heat conducting sleeve is provided with an upper annular IHJ groove;
  • the lower bearing seat assembly is provided with a coolant inlet and a coolant outlet, and the inside of the body is provided with a coolant input passage communicating with the coolant inlet and a coolant outlet A communicating coolant output passage, the lower annular groove and the upper annular groove are in communication with the coolant input passage, and the lower annular groove and the other side of the upper annular groove are in communication with the coolant output passage.
  • the electric spindle of the present invention lubricates the upper and lower bearings of the electric main shaft and the inner and outer rings of the inner main shaft with the oil and gas lubricating medium, thereby enhancing the lubricating effect and improving the rotational efficiency of the shaft of the electric spindle.
  • the present invention also has a central cooling system and an external cooling system to take away the heat generated during the operation of the electric spindle to ensure that the electric spindle operates in a low temperature environment; the electric spindle of the present invention can be utilized after the pull rod completes the unloading operation High pressure gas
  • the tool is blown to the tool for quick loading and unloading of the tool, and the gas flow rate is used to detect whether the tool is installed in place, effectively avoiding the risk of tool detachment.
  • Figure 1 is a view of an axial section of the present invention
  • Figure 2 is a view of another axial section of the present invention.
  • FIG. 3 is a schematic view of the external cooling system of the present invention.
  • Figure 4 is a schematic view of the upper bearing lubrication system of the present invention.
  • Figure 5 is a schematic view showing the oil inlet structure of the bearing and lower bearing lubrication system of the present invention
  • Figure 6 is a schematic view showing the oil discharge structure of the bearing and lower bearing lubrication system of the present invention; wherein: 11, the body; 111, the first blowing passage; 112, coolant input channel; 11 3, coolant output channel; 114, the central axis into the oil and gas channel; 115, the central axis ⁇ oil and gas channel; 116, the lower shaft 7 into the oil and gas channel; 1 17, the lower shaft ⁇ oil and gas channel 12, lower bearing block assembly; 1201, second blowing channel; 1202, first air channel; 1203, third air channel; 1204, coolant inlet; 1205, coolant outlet; 121, lower shaft; 1221, through hole; 123, spring; 124, lower heat conducting sleeve; 1241, lower annular groove; 125, middle bearing; 1 3, upper bearing seat assembly; 1 31, upper bearing; 1 32, upper Thermal sleeve; 1 321 , upper annul
  • the high-power high-speed electric spindle of the present invention includes a body assembly, a shaft core 20, a claw 40, and a drawbar. 30.
  • a rotary joint assembly and an air blowing passage, the body assembly comprising a body 11, an upper bearing housing assembly 13 mounted on an upper portion of the body 11, a lower bearing housing assembly 12 mounted on a lower portion of the body 11, and a lower bearing housing assembly 12 End cap 14 at the lower end.
  • the shaft core 20 is transmitted to the inside of the body 11, and the upper end portion thereof is pivotally connected to the upper bearing housing assembly 13 through the upper bearing 1 31, and the lower end portion is pivotally connected to the lower bearing housing assembly 12 via the lower bearing 121, and the lower end portion of the shaft core 20 is pivoted.
  • the claw 40 is mounted on the shaft core 20
  • the lower end portion of the shaft 20 can be opened or closed when the tie rod 30 is axially moved by the shaft core 20 to fix the cutter or release the cutter; specifically, the tie rod 30 is threaded inside the shaft core 20 and Moving up and down along the axial direction of the shaft core 20, the lower end portion of the tie rod 30 has a flange 31 for pressing the pulling claw 40, and when the pull rod 30 is moved to a position where the flange 31 and the claw 40 are at the same height, the flange 31 Pulling the claw 40 outward The pressing force causes the pulling claws 40 to open.
  • an elastic member is disposed between the tie rod 30 and the shaft core 20, and the elastic member is a disc spring 21 for providing an elastic stress for pressing the tie rod 30 upward, that is, in the disc spring 21 Under the action of the rod 30, the tie rod 30 always has a tendency to move upwards, so that it is not subject to external force.
  • the rotary joint assembly includes a cylinder 51 mounted to the upper portion of the body 11 and mounted to the cylinder 51.
  • the upper knife oil inlet port 53, the unloading knife oil inlet port 54 and the upper knife oil inlet port 53 communicating with the lower chamber are all connected with the external oil supply device. When the knife is required to be unloaded, the hydraulic oil is discharged from the knife.
  • the oil port 54 enters, pushes the piston 52 downward, and the piston 52 pushes down the top ring 32 fixed to the upper end of the tie rod 30, so that the pull rod 30 moves downward, the pull claw 40 closes, and the cutter is released, and vice versa, when the upper knife is needed. Then, the hydraulic oil enters from the upper knife inlet port 53, and the push piston 52 moves upward, and the cutter previously attached to the claw 40 is fixed to the claw 40 during the process in which the claw 40 is gradually opened.
  • the high-speed electric spindle further includes an air blowing passage including a first blowing passage 111 located on the body 11 and connected to an external air source, and located on the lower bearing housing assembly 12 and a second blowing passage 1201 communicating with the first blowing passage 11 1 and a third blowing passage 141 located on the end cover 14 , wherein the third blowing passage 141 extends in a radial direction of the end cover 14 , the third One end of the blowing passage 141 communicates with the second blowing passage 1201, and the other end extends to a gap where the end cover 14 engages with the shaft core 20.
  • an air blowing passage including a first blowing passage 111 located on the body 11 and connected to an external air source, and located on the lower bearing housing assembly 12 and a second blowing passage 1201 communicating with the first blowing passage 11 1 and a third blowing passage 141 located on the end cover 14 , wherein the third blowing passage 141 extends in a radial direction of the end cover 14 , the third One end of the
  • the piston 52 drives the pull rod 30 to complete the unloading action, and the air is quickly blown by the air blowing passage to the gap between the end cover 14 and the shaft core 20, and the high pressure gas is blown to the upper end surface of the shank.
  • the tool is quickly disengaged from the shaft core 20.
  • high-pressure gas can also be sent into the air blowing passage, and the gas seal is applied to the gap between the end cover 14 and the shaft core 20, which can effectively prevent the debris and dust generated during the processing from entering.
  • the components inside the motorized spindle are protected from debris and dust, and the tool is clean.
  • the high-speed electric spindle of the present invention further includes a gas detecting passage for detecting whether the tool is mounted in position after the upper knife movement is completed;
  • the gas detecting passage includes a first air flow passage 1202 disposed on the lower bearing housing assembly 12 On the second air flow passage 23 on the core 20, the first air flow passage 1202 extends from the outer surface of the lower bearing housing assembly 12 to the inner surface of the lower bearing housing assembly 12, and the second air flow passage 23 is formed by the outer surface of the shaft core 20.
  • the inlet formed by the first air flow passage 1202 on the outer surface of the lower bearing housing assembly 12 is for communicating with the outside source, the outlet of the first air flow passage 1202 and the second air flow.
  • the inlets of the passages 23 are oppositely disposed, that is, the outlets of the first airflow passages 1202 and the inlets of the second airflow passages 23 are on the same axial section of the axial core 20.
  • a sliding sleeve 122 is disposed between the lower bearing housing assembly 12 and the shaft core 20, and a sliding hole 1221 is disposed on the sliding sleeve 122.
  • the sliding sleeve 122 can be formed in the movable chamber between the lower bearing housing assembly 12 and the shaft core 20.
  • the axial direction of the shaft core 20 moves up and down, and the sliding sleeve 122 divides the movable chamber into upper and lower parts.
  • the up and down movement of the sliding sleeve 122 is driven by a switching mechanism.
  • the switch mechanism drives the sliding sleeve 122 to move along the axial direction of the shaft core 20
  • the through hole 1221 is moved to a position equal to the outlet of the first air flow passage 1202.
  • the through hole 1221 communicates the outlet of the first air flow channel 1202 and the inlet of the second air flow channel 23 to turn on the gas detecting channel.
  • the high pressure gas input from the external air source can be extended to the first air flow channel 1 202, the second air flow passage 23 reaches the abutting surface of the shaft core 20; when the switch mechanism drives the sliding sleeve 122 to move along the axial direction of the shaft core 20, the through hole 1221 is moved to a position offset from the outlet of the first air flow passage 1202. , the sliding sleeve 122 will be the first
  • the outlet of the air flow passage 1202 is isolated from the inlet of the second air flow passage 23, and the gas detection passage is closed, at which time the high pressure gas input from the external air source cannot enter the second air flow passage 23.
  • the switch mechanism is also implemented by means of air pressure.
  • the switch mechanism includes a third air flow passage 1203 and a spring 123 disposed on the lower bearing housing assembly 12, wherein the third air flow passage 1 203 is under An inlet formed by an outer surface of the bearing block assembly 12 is for communication with an external source of air, and a lower portion of the movable chamber in the lower housing assembly 12 that is separated by the sliding sleeve 122 is in communication with the outlet of the third airflow passage 1203, that is,
  • the third air flow channel 1203 is connected to the external high-pressure gas source and is input with the high-pressure gas, the high-pressure gas is extended to the lower portion of the movable chamber by the third air flow channel 1203, and the generated pressure can cause the sliding sleeve 122 to move upward.
  • the through hole 1221 For moving the through hole 1 221 upward, when the pressure is adjusted to a suitable strength, the through hole 1221 is finally flush with the outlet of the first air flow passage 1202, and communicates with the first air flow passage 1202 and the second air flow passage 23.
  • a spring 123 is mounted between the sleeve 1 22 and the lower housing assembly 12 for providing a resilient stress that urges the sleeve 122 downward.
  • a plurality of check valves 22 are disposed on the shaft core 20 at the inlet of the second air flow passage 23, and the output ends of the plurality of check valves 22 are directed toward the outlet of the second air flow passage 23.
  • the high pressure gas can only flow from the first air flow channel 1202 to the second In the air flow passage 23, the unclean gas or impurities are effectively prevented from entering the inside of the lower bearing housing assembly 12 via the abutting faces of the shaft core 20, thereby well protecting the lower bearing housing assembly 12 and its internal components.
  • the high pressure gas is introduced into the third air flow passage 1203 to drive the sliding sleeve 122 to move upward, so that the through hole 1221 passes the first air flow.
  • the passage 1202 communicates with the second air flow passage 23, and at this time, a high pressure gas is introduced into the first air flow passage 1202, and the high pressure gas sequentially passes through the through hole 1221, the check valve 22, and the second air flow.
  • the passage 23 reaches the abutting surface of the shaft core 20. If the cutter is mounted in position, the upper end surface of the shank and the mating surface are tightly fitted, that is, the upper end surface of the shank closes the outlet of the second air flow passage 23, and the detected at this time If the gas flow rate in the gas detection channel is zero, it proves that the tool is installed in position. Conversely, when there is a certain gas flow rate in the gas detection channel, it is proved that there is no sealing fit between the upper end surface of the tool and the abutting surface of the shaft core 20, There is a certain installation gap between the two, which means that the tool is not installed in place. At this time, the electric spindle can not be started to work.
  • the present invention also has an external cooling system.
  • the lower bearing housing assembly 12 further includes a movable heat conducting sleeve 124 that is sleeved outside the shaft core 20, and conducts heat.
  • the outer surface of the sleeve 124 is provided with a lower annular groove 1241.
  • the upper bearing housing assembly 13 includes a movable thermal sleeve 1 32 which is sleeved on the outside of the core 20.
  • the outer surface of the upper thermal sleeve 1 32 is provided with an upper annular recess.
  • the lower bearing block assembly 12 is provided with a coolant inlet 1204 and a coolant outlet 1205.
  • the body 11 is internally provided with a coolant input passage 112 communicating with the coolant inlet 1204 and a coolant.
  • the outlet 1201 of the outlet 1205, the lower annular groove 1241 and the upper annular groove 1321 are connected to the coolant input passage 112, the lower annular groove 1241 and the other side of the upper annular groove 1321 are connected to the coolant output.
  • the passage 113 is connected.
  • the heat conducting sleeve 132 and the lower heat conducting sleeve 124 exchange heat, and the heat generated by the core 20, the upper shaft 7 seat assembly 13 and the lower bearing block assembly 12 is taken away, and finally the cooling liquid output passage 113, the book
  • the coolant outlet 1205 is returned to the refrigeration unit to continuously cool the interior of the electric spindle.
  • the high-speed electric spindle of the present invention further has a central cooling system.
  • the rotary joint assembly further includes a movable rotating shaft 60 that is coupled to the inside of the piston 52.
  • the rotating shaft 60 is provided with an upper end surface extending therethrough.
  • the cooling flow passage 62 of the end surface, the upper end portion of the cooling flow passage 62 is located at the upper end surface of the rotating shaft 60 to form a coolant inlet 61, and the pulling rod 30 is provided with a cooling passage 33 extending from the upper end surface thereof to the lower end surface thereof, the cooling flow
  • the lower end of the passage 62 is electrically connected to the upper end portion of the cooling passage 33 through the piston 52 of the cylinder assembly 50.
  • the coolant exchanges heat with the tie rod 30, and the coolant flowing to the shank cools the cutter to ensure that the temperature at the working end of the cutter is at a low temperature.
  • the lower end of the rotating shaft 60 may be connected to the upper end of the tie rod 30, and the sealing ring 63 may be disposed at the joint of the rotating shaft 60 and the tie rod 30.
  • the upper body bearing oil passage 151 having an inner end and a gap between the inner ring and the outer ring of the upper bearing 1 31 is disposed on the body assembly, and an inner end and an upper bearing 1 are disposed.
  • the upper bearing oil passage 152 communicating with the gap between the inner ring and the outer ring, the upper bearing inlet oil passage 151 and the upper bearing oil passage 152 extending to the outer side of the body assembly respectively form an upper shaft inlet port and an upper shaft Oil outlet, working on the electric spindle
  • the remaining oil and gas lubricating medium is collected after the upper bearing oil and gas passage 152 flows out.
  • the shaft core 20 is pivotally connected to the upper end portion of the lower bearing housing assembly 12 via a middle bearing 125; the body 11 is provided with a middle bearing inlet and outlet passage 114 having an inner end connected to a gap between the inner ring and the outer ring of the middle bearing 125, and A middle shaft oil and gas passage 115, a middle shaft inlet and outlet passage 114 and a middle bearing oil and gas passage 115 extending to a gap between the inner end and the inner ring of the middle bearing 125 extend to an outer side of the body assembly to form a middle bearing
  • the oil inlet and the middle shaft oil outlet when the electric spindle is working, the oil and gas lubricating medium is introduced into the oil inlet passage 114 of the middle shaft, and the smooth oil enters the gap between the inner ring and the outer ring of the middle bearing 125, and the center bearing 125 acts as a lubricant, and the
  • the body 11 is provided with a lower bearing inlet and outlet passage 116 having an inner end connected to a gap between the inner ring and the outer ring of the lower bearing 121, and an inner end connected to a gap between the inner ring and the outer ring of the lower bearing 121.
  • the shaft oil and gas passage 117, the lower shaft inlet oil passage 116 and the lower bearing oil and gas passage 1 17 extend to the outside of the body assembly to form a lower bearing inlet port and a lower bearing outlet port, respectively, when the electric spindle is operated, downward Bearing inlet oil and gas passage 116 internal oil and gas lubricating medium is introduced, and the smooth oil enters the gap between the inner ring and the outer ring of the lower bearing 121 to lubricate the lower bearing 121, and the excess oil and lubricating lubricating medium is discharged after the lower oil and gas passage 117 flows out. collect.
  • the oil bearing lubricating medium is input to the gaps of the inner ring and the outer ring of the lower bearing 121, the middle bearing 125, and the upper bearing 1 31, thereby improving the lower bearing 121,
  • the lubricating effect of the bearing 125 and the upper bearing 1 31 improves the rotational efficiency of the shaft core 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Abstract

L'invention concerne une électro-broche à haute puissance et à grande vitesse. L'électro-broche à haute puissance et à grande vitesse comprend : un ensemble de corps de machine, comprenant un corps de machine, un composant support de palier supérieur et un composant support de palier inférieur ; une âme de broche, l'extrémité supérieure de l'âme de broche étant reliée en relation pivotante avec le composant support de palier supérieur par l'intermédiaire d'un palier supérieur, et l'extrémité inférieure de l'âme de broche étant reliée en relation pivotante avec le composant support de palier inférieur par l'intermédiaire d'un palier inférieur ; une griffe de traction, montée sur l'extrémité inférieure de l'âme de broche et servant à accrocher un organe de coupe ; et une tige de traction. Un canal d'entrée d'huile-gaz de palier inférieur et un canal de sortie d'huile-gaz de palier inférieur sont ménagés dans le corps de machine, une extrémité latérale interne du canal d'entrée d'huile-gaz de palier inférieur est en communication avec l'écartement entre une bague interne et une bague externe du palier inférieur, et une extrémité latérale interne du canal de sortie d'huile-gaz de palier inférieur est en communication avec l'écartement entre la bague interne et la bague externe du palier inférieur. Un canal d'entrée d'huile-gaz de palier supérieur et un canal de sortie d'huile-gaz de palier supérieur sont ménagés dans l'ensemble de corps de machine, une extrémité latérale interne du canal d'entrée d'huile-gaz de palier supérieur est en communication avec l'écartement entre une bague interne et une bague externe du palier supérieur, et une extrémité latérale interne du canal de sortie d'huile-gaz de palier supérieur est en communication avec l'écartement entre la bague interne et la bague externe du palier supérieur. Dans la présente invention, les bagues internes et les bagues externes du palier supérieur, du palier inférieur et du palier intermédiaire de l'électro-broche sont lubrifiées en utilisant un milieu de lubrification à huile-gaz, de sorte que l'effet de lubrification est amélioré et l'efficacité de rotation de l'âme de l'électro-broche est améliorée.
PCT/CN2014/079279 2013-12-31 2014-06-05 Électro-broche à haute puissance et à grande vitesse WO2015100940A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310754845.5 2013-12-31
CN201310754845.5A CN103752864B (zh) 2013-12-31 2013-12-31 大功率高速电主轴

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WO2015100940A1 true WO2015100940A1 (fr) 2015-07-09

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PCT/CN2014/079279 WO2015100940A1 (fr) 2013-12-31 2014-06-05 Électro-broche à haute puissance et à grande vitesse

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WO (1) WO2015100940A1 (fr)

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CN103752864B (zh) * 2013-12-31 2016-05-11 广州市昊志机电股份有限公司 大功率高速电主轴
GB2526340B (en) * 2014-05-21 2020-05-20 Novanta Tech Uk Limited Gas bearing spindles
CN104690602B (zh) * 2015-03-13 2017-07-11 浙江畅尔智能装备股份有限公司 一种机床主轴的冷却结构
CN107262746A (zh) * 2017-08-02 2017-10-20 东莞市科隆实业有限公司 高稳定性的超声波气浮电主轴
CN108406342A (zh) * 2018-05-04 2018-08-17 深圳市速锋科技股份有限公司 一种电主轴的冷却结构及润滑结构
CN108927703A (zh) * 2018-08-07 2018-12-04 深圳市爱贝科精密机械有限公司 一种电主轴的中心出水装置
CN109261990A (zh) * 2018-10-24 2019-01-25 深圳市爱贝科精密机械有限公司 一种气浮电主轴结构
CN109848445B (zh) * 2019-04-01 2020-11-03 湖南广播电视大学 一种机床主轴装置
CN113000868B (zh) * 2021-03-12 2023-07-18 宁波天控五轴数控技术有限公司 一种带有液压缸和具备中心冷却的电主轴用组件
CN117283000B (zh) * 2023-09-13 2024-03-15 陕西关中工具制造有限公司 一种数控机床的高速电主轴

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003340671A (ja) * 2002-05-30 2003-12-02 Koyo Seiko Co Ltd ビルトインモータ主軸およびそれを用いた超仕上げ盤
WO2004011817A1 (fr) * 2002-07-29 2004-02-05 Nsk Ltd. Palier a rouleaux, dispositif de remplissage de graisse, dispositif d'arbre principal, procede de remplissage de graisse, et programme de remplissage de graisse
CN1894515A (zh) * 2002-07-29 2007-01-10 日本精工株式会社 滚动轴承、润滑脂补给装置、主轴装置、润滑脂补给方法及润滑脂补给程序
CN201922265U (zh) * 2010-12-29 2011-08-10 广州市昊志机电有限公司 一种滚珠高速电主轴的拉刀机构
JP4836852B2 (ja) * 2007-03-28 2011-12-14 Ｎｔｎ株式会社 アンギュラ玉軸受の潤滑装置
CN102489727A (zh) * 2011-11-26 2012-06-13 广州市昊志机电股份有限公司 一种滚珠高速铣削电主轴
CN103752864A (zh) * 2013-12-31 2014-04-30 广州市昊志机电股份有限公司 大功率高速电主轴

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202088015U (zh) * 2010-12-29 2011-12-28 广州市昊志机电股份有限公司 一种滚珠高速电主轴的换刀机构
CN201906834U (zh) * 2010-12-29 2011-07-27 广州市昊志机电有限公司 一种滚珠高速主轴的机体
CN102078973B (zh) * 2010-12-29 2012-09-05 广州市昊志机电股份有限公司 一种滚珠高速电主轴
CN102974845A (zh) * 2012-11-29 2013-03-20 昆明理工大学 一种高速电主轴装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003340671A (ja) * 2002-05-30 2003-12-02 Koyo Seiko Co Ltd ビルトインモータ主軸およびそれを用いた超仕上げ盤
WO2004011817A1 (fr) * 2002-07-29 2004-02-05 Nsk Ltd. Palier a rouleaux, dispositif de remplissage de graisse, dispositif d'arbre principal, procede de remplissage de graisse, et programme de remplissage de graisse
CN1894515A (zh) * 2002-07-29 2007-01-10 日本精工株式会社 滚动轴承、润滑脂补给装置、主轴装置、润滑脂补给方法及润滑脂补给程序
JP4836852B2 (ja) * 2007-03-28 2011-12-14 Ｎｔｎ株式会社 アンギュラ玉軸受の潤滑装置
CN201922265U (zh) * 2010-12-29 2011-08-10 广州市昊志机电有限公司 一种滚珠高速电主轴的拉刀机构
CN102489727A (zh) * 2011-11-26 2012-06-13 广州市昊志机电股份有限公司 一种滚珠高速铣削电主轴
CN103752864A (zh) * 2013-12-31 2014-04-30 广州市昊志机电股份有限公司 大功率高速电主轴

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