CN110340383A - A kind of High-precision air floatation electric main shaft of automatic tool changer - Google Patents
A kind of High-precision air floatation electric main shaft of automatic tool changer Download PDFInfo
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- CN110340383A CN110340383A CN201910433717.8A CN201910433717A CN110340383A CN 110340383 A CN110340383 A CN 110340383A CN 201910433717 A CN201910433717 A CN 201910433717A CN 110340383 A CN110340383 A CN 110340383A
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Classifications
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- 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
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- 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
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Turning (AREA)
Abstract
The invention discloses a kind of High-precision air floatation electric main shafts of automatic tool changer, belong to finish machining equipment field, electro spindle includes the cylinder assembly being arranged from top to bottom, cap assembly, motor, thrust bearing assembly, cylinder block set, air-bearing component, axle core component and flange assembly；Electro spindle has the function of automatic tool changer, greatly improves working efficiency；Electro spindle uses unique three-stage cooling structure, three-stage cooling structure includes air-bearing cooling structure, flange cooling structure and motor cooling, individually motor stator, bearing and flange position are cooled down, rear motor eliminates temperature interference, postposition flying disc greatly reduces the thermal stretching of the caused central spindle of flying disc fever, aim at the brand new automatic tool changer structure central spindle of high-precision mold fabrication design, automatic tool changer function significant increase spindle processing working efficiency, the main shaft milling surface accuracy is up to 20nm or less.Sub-sectional cooling is carried out using three-stage cooling structure, ensure that the high-precision stable operation of electro spindle.
Description
Technical field
The present invention relates to high-precision process equipment more particularly to a kind of High-precision air floatation electric main shafts of automatic tool changer.
Background technique
Ultraprecise and Ultraprecision Machining are one of most important parts in machinery manufacturing industry, directly to each country's point
End technology and national defense industry have profound influence, also will affect the processing quality of civilian engineering goods, and the world for influencing product is competing
Strive power.In the 1950s, Precision Machining level can reach 3-5 μm, the attainable machining accuracy of Ultra-precision Turning can reach 1 μ
m.70 later period of 20th century, precise processing precision level can reach 1 μm, Ultra-precision Turning level up to 0.1 μm, it is accurate at present with it is super
Precision machinery processing machining accuracy has been promoted to nanoscale.Precise and ultraprecise machining technology, by as advanced manufacturing technology
In first develop content.
Because of the error-correction model phenomenon and low friction of air-floating main shaft, low-loss, so that air-floating main shaft is high-precision as realizing
Degree mold processes best one of carrier.But because most of high-precision air-floating main shafts are manual tool changing structure, cause to add
Work efficiency rate reduces.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of high-precision air-flotation electrics of automatic tool changer
Main shaft.
The purpose of the present invention is implemented with the following technical solutions:
A kind of High-precision air floatation electric main shaft of automatic tool changer, the electro spindle include the cylinder assembly being arranged from top to bottom,
Cap assembly, motor, thrust bearing assembly, cylinder block set, air-bearing component, axle core component and flange assembly, with active
The cylinder assembly of connector is fixedly installed on cap assembly, and the water jacket cage connection that the cap assembly is arranged with lower section simultaneously will be electric
Machine is arranged in the water jacket shell, and thrust bearing assembly is arranged below the motor, body is arranged below thrust bearing assembly
Component, the center that the cap assembly, motor, thrust bearing assembly and cylinder block set are set of the axle core component perforation,
The lower end of the axle core component is fixedly attached to cylinder block set by flange assembly, and the air-bearing component is arranged in the machine
Between body component and the axle core component, the flying disc of the axle core component is arranged far from the flange assembly of lower end, and flying disc is upper
The setting of end surfaces is below the thrust bearing assembly；The electro spindle be segmented using three-stage cooling structure cold
But, the three-stage cooling structure includes air-bearing cooling structure, flange cooling structure and motor cooling.
Preferably, actuating sequentially enters air-bearing component and thrust axis by the air flue on cylinder block set with high pressure gas
Bearing assembly, forms pressure air film between axle core component and air-bearing component, thrust bearing assembly, and support axle core component is in
Suspended state, and axle core component high speed rotation is driven by motor, the collet and cutter stable rotation for driving lower end with this are to workpiece
Processing.
Preferably, the active connector that high pressure gas also passes through cylinder assembly top enters and cylinder piston is driven to move, right
The push rod at axle core component center generates pressure, and the push rod impeller-hub despot's compression disc spring moved down drives the collet of lower end downward
Mobile, the opening that moves down of collet realizes tool changing；After cutoff high gas, the reset spring that push rod top outer is arranged in makes
Push rod resets, while making axis despot move up clamp-on tool with chuck as a whole under the elastic force of disc spring, completes cutter switching.
Preferably, air-bearing cooling structure includes being oppositely arranged on the cylinder block set on the outside of air-bearing component
Bearing water supply connector and bearing water outlet connector, inlet channel and water outlet at air-bearing component, thrust bearing assembly and flying disc,
The flying disc at air-bearing component, thrust bearing assembly is cooled down by the coolant liquid of water channel.
Preferably, the inlet channel at air-bearing component is around the air-bearing component spiral channel；And in gas
The vertical portion of water outlet at floating axle bearing assembly is arranged on the inside of the spiral channel.
Preferably, flange cooling structure includes the flange water supply connector being oppositely arranged on the cylinder block set for close on flange assembly
With flange water outlet connector, inlet channel and water outlet are set between flange assembly and its internal axle core component part, with this to facing
The lower semisection of the air-bearing component of nearly flange assembly is cooled down.
Preferably, the inlet channel includes the spiral water of the vertical water channel being arranged in cylinder block set and adjacent flange assembly
Road, the outlet end of spiral channel are connected to the flange water outlet connector.
Preferably, the motor cooling includes the motor being arranged on the cap assembly being arranged on the adjoining motor
Water supply connector and motor water outlet connector, the inlet channel and water outlet opened up on the water jacket shell on the outside of motor, with this to motor into
Row cooling.
Preferably, the inlet channel includes vertical inlet channel, spiral channel and vertical water outlet, the motor entering water connector
Bottom end connect with the top of the vertical inlet channel, the vertical inlet channel is connected to the top of the spiral channel, described
Vertical water outlet is connected to the bottom of the spiral channel, and the top of the vertical water outlet and the lower end of motor water outlet connector connect
It connects.
Preferably, it is threadedly coupled coding disk on the top of the axle core component, and the intermediate throughholes diameter of axle core component is small
In equal to 10mm.
Compared with prior art, the beneficial effects of the present invention are: compared with other high-precision mold machining spindles have from
Move knife function, greatly improve working efficiency, using three-stage cooling structure to electro spindle cooling and high-precision fabrication design
Flying disc, motor postposition structure guarantee the high-precision stable operation of electro spindle.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the High-precision air floatation electric main shaft of automatic tool changer of the present invention；
Fig. 2 is motor, the rear-mounted structural schematic diagram of flying disc；
Fig. 3 is air-bearing cooling structure schematic diagram；
Fig. 4 is flange cooling structure schematic diagram；
Fig. 5 is motor cooling schematic diagram；
Fig. 6 is central spindle structural schematic diagram.
In figure: 1, cylinder assembly；2, cap assembly；3, motor；4, thrust bearing assembly；5, cylinder block set；6, air-bearing shafts
Bearing assembly；7, axle core component；71, flying disc；8, flange assembly；9, bearing water supply connector；10, bearing water outlet connector；11, flange into
Water swivel；12, flange water outlet connector；13, motor entering water connector；14, motor water outlet connector；15, coding disk；16, collet.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to Fig. 1-Fig. 6, a kind of High-precision air floatation electric main shaft of automatic tool changer, electro spindle includes cylinder assembly 1, top cover group
Part 2, motor 3, thrust bearing assembly 4, cylinder block set 5, air-bearing component 6, axle core component 7 and flange assembly 8.
Purpose of design and structural principle
Using unique three-stage cooling structure, individually stator, bearing and flange position are cooled down, rear motor
Temperature interference is eliminated, postposition flying disc greatly reduces the thermal stretching of the caused central spindle of flying disc fever, aims at high-precision mold processing and sets
The brand new automatic tool changer structure central spindle of meter, automatic tool changer function significant increase spindle processing working efficiency, the main shaft milling
Surface accuracy is up to 20nm or less.
Structure connection relationship
Referring to Fig. 1, cylinder assembly 1, cap assembly 2, motor 3, thrust bearing assembly 4, cylinder block set 5, air-bearing group
Connection relationship from top to bottom is presented in part 6, axle core component 7 and 8 entirety of flange assembly.Specifically, having the air cylinder group of active connector
Part 1 is fixedly installed on cap assembly 2, and simultaneously motor 3 is arranged in water jacket for the water jacket cage connection of cap assembly 2 and lower section setting
In shell, thrust bearing assembly 4 is set below motor 3, cylinder block set 5 is set below thrust bearing assembly 4, axle core component 7 passes through
The logical center that cap assembly 2, motor 3, thrust bearing assembly 4 and cylinder block set 5 is arranged in, the lower end of axle core component 7 pass through
Flange assembly 8 is fixedly attached to cylinder block set 5, and air-bearing component 6 is arranged between cylinder block set 5 and axle core component 7.
Wherein, the flying disc 71 of axle core component 7 is arranged far from the flange assembly 8 of lower end, and the upper surface adjoining of flying disc 71
It is arranged below thrust bearing assembly 4.Referring to fig. 2, motor 3,71 postposition of flying disc eliminate temperature interference.Specifically, motor 3 is located at
7 end of axle core component drives 7 high-speed rotation of axle core component, and thrust bearing assembly 4 and 7 flying disc of axle core component are located at main shaft far from knife
Has end, in 4 high precision electro main axis process of thrust bearing assembly, calorific value size influences machining accuracy very huge
Greatly, make the main heating position of electro spindle far from central spindle cutter, can utmostly avoid the central spindle caused by generating heat because of internal structure
Thermal stretching ensure that processing quality.Rear-mounted flying disc and rear-mounted electric machine structure make it possible Nano grade machining accuracy.
Electro spindle carries out sub-sectional cooling using three-stage cooling structure, and referring to Fig. 3-Fig. 5, three-stage cooling structure includes gas
Floating bearing cooling structure, flange cooling structure and motor cooling.
Referring to Fig. 3, air-bearing cooling structure includes opposite on the cylinder block set 5 in 6 outside of air-bearing component sets
The bearing water supply connector 9 set and bearing water outlet connector 10, the water inlet at air-bearing component 6, thrust bearing assembly 4 and flying disc 71
Road and water outlet cool down the flying disc 71 at air-bearing component 6, thrust bearing assembly 4 by the coolant liquid of water channel.?
Inlet channel at air-bearing component 6 is around 6 spiral channel of air-bearing component；And the water outlet at air-bearing component 6
The vertical portion in road is arranged on the inside of spiral channel.
Referring to fig. 4, flange cooling structure includes the flange water inlet being oppositely arranged on the cylinder block set 5 for close on flange assembly 8
Inlet channel and water outlet is arranged between flange assembly 8 and its internal 7 part of axle core component in connector 11 and flange water outlet connector 12
Road cools down the lower semisection for the air-bearing component 6 for closing on flange assembly 8 with this.The inlet channel of the part is included in machine
The spiral channel of the vertical water channel and adjacent flange assembly 8 that are arranged in body component 5, the outlet end of spiral channel is connected to flange and goes out
Water swivel 12.
Referring to Fig. 5, motor cooling includes the motor entering water being arranged on the cap assembly 2 being arranged on adjacent motor 3
Connector 13 and motor water outlet connector 14, the inlet channel and water outlet opened up on the water jacket shell in the outside of motor 3, with this to motor 3
It is cooled down.The inlet channel of the part includes vertical inlet channel, spiral channel and vertical water outlet, the bottom of motor entering water connector 13
End is connect with the top of vertical inlet channel, and vertical inlet channel is connected to the top of spiral channel, vertical water outlet and spiral channel
Bottom connection, the top of vertical water outlet is connect with the lower end of motor water outlet connector 14.
Referring to Fig. 6, it is threadedly coupled coding disk 15 on the top of axle core component 7, the screw thread of high-precision processing guarantees installation essence
While spending, it also ensure that interfere and normally forge a knife.
And the intermediate throughholes diameter of axle core component 7 is less than or equal to 10mm, reduces central spindle rotation caused by processing as far as possible
Unstability, the collet 16 that high-precision fabrication design is aimed in central spindle pass through the morpheme size tolerance for changing disassembly mode and a set of matching
Guarantee processing quality.
Process principle and tool changing process
Actuating sequentially enters air-bearing component 6 and thrust bearings by the air flue on cylinder block set 5 with high pressure gas
Part 4 forms pressure air film between axle core component 7 and air-bearing component 6, thrust bearing assembly 4, supports at axle core component 7
7 high speed rotation of axle core component is driven in suspended state, and by motor 3, the collet 16 and cutter stable rotation of lower end are driven with this
To work pieces process.
Gas forges a knife to axle core component 7 by cylinder assembly 1, and main shaft is made to realize automatic tool changer.High pressure gas is also logical
The active connector for crossing 1 top of cylinder assembly enters and cylinder piston is driven to move, and generates pressure to the push rod at 7 center of axle core component
Power, the push rod impeller-hub despot's compression disc spring moved down, drives the collet 16 of lower end to move down, collet 16 moves down opening in fact
Existing tool changing；After cutoff high gas, the reset spring that push rod top outer is arranged in resets push rod, while in disc spring
Make axis despot move up clamp-on tool with 16 entirety of collet under elastic force, completes cutter switching.
The electro spindle belongs to Ultra-precision Turning, is related to gas lubrication theory, rotor rotary balance theory etc., is mainly adapted to
Ultraprecise die industry and semiconductor chip are ground industry, and processing efficiency and yield rate can be greatly improved.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of High-precision air floatation electric main shaft of automatic tool changer, the electro spindle include the cylinder assembly (1) being arranged from top to bottom,
Cap assembly (2), motor (3), thrust bearing assembly (4), cylinder block set (5), air-bearing component (6), axle core component (7) and
Flange assembly (8), the cylinder assembly (1) with active connector are fixedly installed on cap assembly (2), the cap assembly (2)
With the water jacket cage connection of lower section setting and motor (3) are arranged in the water jacket shell, setting pushes away below the motor (3)
Cylinder block set (5) are arranged in power bearing assembly (4), thrust bearing assembly (4) lower section, and the setting of axle core component (7) perforation exists
The cap assembly (2), motor (3), thrust bearing assembly (4) and cylinder block set (5) center, the axle core component (7)
Lower end is fixedly attached to cylinder block set (5) by flange assembly (8), and the air-bearing component (6) is arranged in the body group
Between part (5) and the axle core component (7), it is characterised in that: flange of the flying disc (71) of the axle core component (7) far from lower end
Component (8) setting, and the setting of the upper surface adjoining of flying disc (71) is below the thrust bearing assembly (4)；The electro spindle
Sub-sectional cooling is carried out using three-stage cooling structure, the three-stage cooling structure includes that air-bearing cooling structure, flange are cold
But structure and motor cooling.
2. electro spindle according to claim 1, it is characterised in that: actuating is passed through on cylinder block set (5) with high pressure gas
Air flue sequentially enters air-bearing component (6) and thrust bearing assembly (4), axle core component (7) and air-bearing component (6),
Pressure air film is formed between thrust bearing assembly (4), support axle core component (7) is in suspended state, and by motor (3) drive shaft
Core assembly (7) high speed rotation, the collet (16) for driving lower end with this and cutter stable rotation are to work pieces process.
3. electro spindle according to claim 1 or 2, it is characterised in that: high pressure gas also passes through cylinder assembly (1) top
Active connector enters and cylinder piston is driven to move, and generates pressure, the push rod moved down to the push rod at axle core component (7) center
Impeller-hub despot's compression disc spring, drives the collet (16) of lower end to move down, and the opening that moves down of collet (16) realizes tool changing；It is cutting off
After high pressure gas, the reset spring that push rod top outer is arranged in resets push rod, while making axis under the elastic force of disc spring
Despot integrally moves up clamp-on tool with collet (16), completes cutter switching.
4. electro spindle according to claim 1, it is characterised in that: air-bearing cooling structure includes being located at air-bearing group
The bearing water supply connector (9) being oppositely arranged on cylinder block set (5) on the outside of part (6) and bearing water outlet connector (10), air-bearing
Inlet channel and water outlet at component (6), thrust bearing assembly (4) and flying disc (71), by the coolant liquid of water channel to air-bearing shafts
Flying disc (71) at bearing assembly (6), thrust bearing assembly (4) is cooled down.
5. electro spindle according to claim 4, it is characterised in that: inlet channel at air-bearing component (6) be around
Air-bearing component (6) spiral channel；And the vertical portion of the water outlet at air-bearing component (6) is arranged described
On the inside of spiral channel.
6. electro spindle according to claim 1, it is characterised in that: flange cooling structure includes closing on flange assembly (8)
The flange water supply connector (11) being oppositely arranged on cylinder block set (5) and flange water outlet connector (12), flange assembly (8) and its inside
Axle core component (7) part between inlet channel and water outlet are set, with this to the air-bearing component for closing on flange assembly (8)
(6) lower semisection is cooled down.
7. electro spindle according to claim 6, it is characterised in that: the inlet channel is included in setting in cylinder block set (5)
Vertical water channel and adjacent flange assembly (8) spiral channel, the outlet end of spiral channel is connected to the flange water outlet connector
(12)。
8. electro spindle according to claim 1, it is characterised in that: the motor cooling includes setting described in the adjoining
The motor entering water connector (13) and motor water outlet connector (14) being arranged on cap assembly (2) on motor (3), motor (3) outside
Water jacket shell on the inlet channel and water outlet that open up, motor (3) is cooled down with this.
9. electro spindle according to claim 8, it is characterised in that: the inlet channel includes vertical inlet channel, spiral channel
Connect with the bottom end of vertical water outlet, the motor entering water connector (13) with the top of the vertical inlet channel, it is described vertically into
Water channel is connected to the top of the spiral channel, and the vertical water outlet is connected to the bottom of the spiral channel, described vertical
The top of water outlet is connect with the lower end of motor water outlet connector (14).
10. electro spindle according to claim 1, it is characterised in that: be threadedly coupled and compile on the top of the axle core component (7)
Code-disc (15), and the intermediate throughholes diameter of axle core component (7) is less than or equal to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433717.8A CN110340383B (en) | 2019-05-23 | 2019-05-23 | High-precision air-floatation electric spindle capable of automatically changing tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433717.8A CN110340383B (en) | 2019-05-23 | 2019-05-23 | High-precision air-floatation electric spindle capable of automatically changing tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110340383A true CN110340383A (en) | 2019-10-18 |
| CN110340383B CN110340383B (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910433717.8A Active CN110340383B (en) | 2019-05-23 | 2019-05-23 | High-precision air-floatation electric spindle capable of automatically changing tools |
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| Country | Link |
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| CN (1) | CN110340383B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110695380A (en) * | 2019-11-16 | 2020-01-17 | 洛阳传顺机械设备有限公司 | Ultrasonic wave air static pressure electricity main shaft |
| CN111940766A (en) * | 2020-07-07 | 2020-11-17 | 广州市昊志机电股份有限公司 | Air-floatation motorized spindle and machine tool |
| CN114054786A (en) * | 2021-11-29 | 2022-02-18 | 广州市昊志机电股份有限公司 | Electric spindle and machine tool |
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| CN114054786A (en) * | 2021-11-29 | 2022-02-18 | 广州市昊志机电股份有限公司 | Electric spindle and machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110340383B (en) | 2021-02-02 |
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