CN102476193A - Separating type flexibly driven spindle system for high-precision processing machine tool - Google Patents
Separating type flexibly driven spindle system for high-precision processing machine tool Download PDFInfo
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- CN102476193A CN102476193A CN2010105542802A CN201010554280A CN102476193A CN 102476193 A CN102476193 A CN 102476193A CN 2010105542802 A CN2010105542802 A CN 2010105542802A CN 201010554280 A CN201010554280 A CN 201010554280A CN 102476193 A CN102476193 A CN 102476193A
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Abstract
The invention relates to a separating type flexibly driven spindle system for a high-precision processing machine tool, in order to solve the problems that a motor and a spindle of a spindle system in ultra-precision processing equipment are in rigid connection, a power transmission effect is inferior and the rotation precision of the spindle is influenced by the rigid connection. After an alternated current servo motor of the separating type flexibly driven spindle system is electrified, the alternated current servo motor starts to run so as to drive a flexible driving component to rotate, and a rotating torsion is generated by a driving lever under the driving of a flat belt which is rotated so as to drive the spindle to rotate and cut. High-pressure air enters from an axial air inlet, is throttled by a radial throttling hole, and then a radial air static pressure film is formed at a radial air film clearance by the high-pressure air; the radial air static pressure film is used for supporting the spindle and a radial load of the spindle; an axial air static pressure film is formed at an axial air film clearance by the high-pressure air after the high-pressure air is throttled by a first axial throttling hole; and the axial air static pressure film is used for supporting the spindle and an axial load of the spindle. The separating type flexibly driven spindle system provided by the invention is used for ultra-precision turning lathes and ultra-precision milling machines in various forms.
Description
Technical field
The invention belongs to ultra-precise gas static-pressure axis system field, be specifically related to the high-precision processing machine-tool spindle system that a kind of separated flexible drives.
Background technology
Along with science and technology development, sophisticated technologies such as Developing Defence Industry, microelectronics industry need precision and ultraprecise process unit and technology, especially super-precision machine tools, the core in Ultraprecision Machining field and key especially.The axis system of super-precision machine tools is the critical component of super-precision machine tools, and its precision directly influences the machining accuracy of part.Therefore, how to design and manufacture the core and key that ultraprecise main shaft has become super-precision machine tools.The problem of three aspects is mainly considered in the design of super-precision machine tools main shaft: one is the problem of spindle rotation accuracy and rigidity, and another is the problem of Drive Structure and mode, and Drive Structure and mode affect the rotating accuracy and the rigidity of main shaft simultaneously.In super-precision machine tools, the rotating accuracy of ultraprecise main shaft and rigidity are very important technical indicators.At present; The ultra-precision machine tool of China is using gases hydrostatic spindle mode widely; Because the advantages such as leveling effect that gas-static supports can reach higher rotating accuracy, but the transmission of motor and the main shaft power modes that are rigidly connected that adopt more; The problem that influences that is rigidly connected to the main shaft precision is not well solved always, and the driving power fluctuation of main shaft also can bring influence to rotating accuracy.
Summary of the invention
The objective of the invention is for solving the problem in the existing ultraprecise process unit, the high-precision processing machine-tool spindle system that provides a kind of separated flexible to drive.
Axis system of the present invention comprises AC servo motor, motor base, first alignment pin, second alignment pin, slide carriage, pressurized air spindle assemblies, soft drive assembly and two driving levers, and the pressurized air spindle assemblies is made up of air sucker, thrust bearing, journal bearing, main spindle box, main shaft, support ring and distributing ring, and main shaft is contained in the endoporus of journal bearing; Journal bearing is packed in the main spindle box, and main spindle box is connected with slide carriage, and positions through second alignment pin; Thrust bearing is sleeved on the output of main shaft, and the sidewall of journal bearing is provided with the axial admission hole, and the sidewall of journal bearing is provided with several radially throttling pore that communicates with the axial admission hole; The output end face of journal bearing is provided with and corresponding first passage of the end face of thrust bearing, and the output end face of journal bearing is provided with the shaft shoulder end face corresponding first axial throttling pore on several and the main shaft, and first passage and the first axial throttling pore all communicate with the axial admission hole; The end face of thrust bearing be provided with first passage over against and second passage that communicates; The output end face of thrust bearing is provided with the shaft shoulder end face corresponding second axial throttling pore on several and the main shaft, and the second axial throttling pore communicates with second passage, and the air sucker is arranged on the output end face of main shaft; And it is air sucker and main shaft is affixed through connector; Distributing ring is sleeved on the input of main shaft, and said AC servo motor and motor base are affixed, and motor base and slide carriage are affixed; And position through alignment pin; Said soft drive assembly is made up of two multidiameters, flat belt, four deep groove ball bearings, spring-loaded pawl and tapered sleeves, and each multidiameter is followed successively by thread segment, disk linkage section, bearing linkage section and shaft shoulder section by input to output, and spring-loaded pawl is made up of disk and cone; Cone is vertically set on the place, axle center of disk; And the bottom face of cone is connected with the end face of disk, and cone and disk are processed one, and the axle center of spring-loaded pawl is provided with centre bore; Be arranged with two axis holes on the end face of disk; Centre bore on the spring-loaded pawl is connected with the output shaft of AC servo motor, and the endoporus of tapered sleeve matches with cone on the spring-loaded pawl, and two axis holes are furnished with a multidiameter respectively; And the disk linkage section on the multidiameter cooperates with the axis hole on the spring-loaded pawl; Thread segment on the multidiameter is exposed at outside the input end face of disk, and two deep groove ball bearings are housed on the bearing linkage section on each multidiameter, and flat belt is sleeved on four deep groove ball bearings; Two driving lever symmetries are installed on the input end face of main shaft, and the other end of each driving lever is connected with flat belt.
Advantage of the present invention is:
One, the present invention adopts the mode that separated flexible drives, and has reduced the influence of driving force to spindle rotation accuracy, has characteristics such as dynamic characteristic is good, degree of turn height.Both can make main shaft have very high rotating accuracy and higher rigidity, and realize its high power again, driven at a high speed, stably.
Two, the present invention utilizes the support of aerostatic bearing as the ultraprecise main shaft, has realized the ultra-precise revolving of main shaft, and its rotating accuracy can reach 0.021 μ m by the manufacture level of present parts.
Three, the present invention has adopted aerostatic bearing to do axially and radial support; Because aerostatic bearing has tangible characteristics, the friction of gas is little, and the heating distortion is little; Its pressure air film has leveling effect, can make the friction of main shaft little and have a very high rotating accuracy.
Four, applied range can be applicable on various ways, the multi-purpose ultra-precision machine tool such as super precision lathe, ultraprecise milling machine of various ways.
Five, the present invention adapts to the needs of super-precision machine tools design and manufacturing fully.
Description of drawings
Fig. 1 is overall structure master's cutaway view of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the H-H cutaway view of Fig. 2;
Fig. 4 is structure master's cutaway view of soft drive assembly.
The specific embodiment
The specific embodiment one:
In conjunction with Fig. 1-Fig. 4 this embodiment is described, this embodiment comprises AC servo motor 17, motor base 18, first alignment pin 19, second alignment pin 22, slide carriage 23, pressurized air spindle assemblies, soft drive assembly and two driving levers 11, and the pressurized air spindle assemblies is made up of air sucker 1, thrust bearing 5, journal bearing 6, main spindle box 7, main shaft 8, support ring 9 and distributing ring 10; Main shaft 8 is contained in the endoporus of journal bearing 6, and radially air film gap 21 is arranged between the external diameter of the internal diameter of journal bearing 6 and main shaft 8, and journal bearing 6 is packed in the main spindle box 7; Main spindle box 7 is connected with slide carriage 23, and positions through second alignment pin 22, and thrust bearing 5 is sleeved on the output of main shaft 8; Shaft shoulder end on thrust bearing 5 and the main shaft 8 is provided with axial air film gap 25, and the sidewall of journal bearing 6 is provided with axial admission hole 6-1, and the sidewall of journal bearing 6 is provided with several radially throttling pore 6-2 that communicates with axial admission hole 6-1; The output end face of journal bearing 6 is provided with and corresponding first passage 6-3 of the end face of thrust bearing 5, and shaft shoulder end face corresponding first axial throttling pore 6-4, first passage 6-3 and the first axial throttling pore 6-4 that the output end face of journal bearing 6 is provided with on several and the main shaft 8 all communicate with axial admission hole 6-1; The end face of thrust bearing 5 be provided with first passage 6-3 over against and second passage 5-1 that communicates, shaft shoulder end face corresponding second axial throttling pore 5-2, the second axial throttling pore 5-2 that the output end face of thrust bearing 5 is provided with on several and the main shaft 8 communicate with the second passage 5-1; Air sucker 1 is arranged on the output end face of main shaft 8, and through connector that air sucker 1 and main shaft 8 is affixed, and distributing ring 10 is sleeved on the input of main shaft 8; AC servo motor 17 is affixed with motor base 18; Motor base 18 is affixed with slide carriage 23, and positions through alignment pin 19, and said soft drive assembly is made up of two multidiameters 12, flat belt 13, four deep groove ball bearings 14, spring-loaded pawl 15 and tapered sleeves 16; Each multidiameter 12 is followed successively by thread segment 12-1, disk linkage section 12-2, bearing linkage section 12-3 and shaft shoulder section 12-4 by input to output; Spring-loaded pawl 15 is made up of disk 15-1 and cone 15-2, and cone 15-2 is vertically set on the place, axle center of disk 15-1, and the bottom face of cone 15-2 is connected with the end face of disk 15-1; Cone 15-2 and disk 15-1 process one; The axle center of spring-loaded pawl 15 is provided with centre bore 15-3, is arranged with two axis hole 15-1-1 on the end face of disk 15-1, and the centre bore 15-3 on the spring-loaded pawl 15 is connected with the output shaft of AC servo motor 17; The endoporus of tapered sleeve 16 matches with cone 15-2 on the spring-loaded pawl 15; Tapered sleeve 16 is fastening through connector with spring-loaded pawl 15, and two axis hole 15-1-1 are furnished with a multidiameter 12 respectively, and the disk linkage section 12-2 on the multidiameter 12 cooperates with axis hole 15-1-on the spring-loaded pawl 15; Thread segment 12-1 on the multidiameter 12 is exposed at outside the input end face of disk 15-1; And lock through nut, on the bearing linkage section 12-3 on each multidiameter 12 two deep groove ball bearings 14 are housed, flat belt 13 is sleeved on four deep groove ball bearings 14; Two driving lever H symmetries are installed on the input end face of main shaft 8, and the other end of each driving lever H is connected with flat belt 13.Output end face on the air sucker 1 is provided with several the 3rd passages 1-1 and several cannelures 1-2; Air distribution hole 10-1 is arranged on the distributing ring 10; Air distribution hole 10-1 communicates with several the 3rd passages 1-1 through axle center hole 8-1 on the main shaft 8; Regulate air pressure through distributing ring 10 and suck workpiece, control the gaseous state among the 3rd passage 1-1 through the valve on the distributing ring 10.The axial support of main shaft 8 is positioned at the output of main shaft, can make the workspace have higher axial rigidity.
Claims (1)
1. the high-precision processing machine-tool spindle system that drives of a separated flexible, said axis system comprises AC servo motor, motor base, first alignment pin, second alignment pin, slide carriage and pressurized air spindle assemblies, it is characterized in that:
(1) the pressurized air spindle assemblies is made up of air sucker, thrust bearing, journal bearing, main spindle box, main shaft, support ring and distributing ring; Main shaft is contained in the endoporus of journal bearing; Journal bearing is packed in the main spindle box, and main spindle box is connected with slide carriage, and positions through second alignment pin;
(2) thrust bearing is sleeved on the output of main shaft; The sidewall of journal bearing is provided with the axial admission hole; The sidewall of journal bearing is provided with several radially throttling pore that communicates with the axial admission hole; The output end face of journal bearing is provided with and corresponding first passage of the end face of thrust bearing, and the output end face of journal bearing is provided with the shaft shoulder end face corresponding first axial throttling pore on several and the main shaft, and first passage and the first axial throttling pore all communicate with the axial admission hole; The end face of thrust bearing be provided with first passage over against and second passage that communicates; The output end face of thrust bearing is provided with the shaft shoulder end face corresponding second axial throttling pore on several and the main shaft, and the second axial throttling pore communicates with second passage, and the air sucker is arranged on the output end face of main shaft; And through connector that air sucker and main shaft is affixed, distributing ring is sleeved on the input of main shaft;
(3) said AC servo motor and motor base are affixed, and motor base and slide carriage are affixed, and position through alignment pin;
(4) said axis system also comprises soft drive assembly and two driving levers;
(5) said soft drive assembly is made up of two multidiameters, flat belt, four deep groove ball bearings, spring-loaded pawl and tapered sleeves, and each multidiameter is followed successively by thread segment, disk linkage section, bearing linkage section and shaft shoulder section by input to output, and spring-loaded pawl is made up of disk and cone; Cone is vertically set on the place, axle center of disk; And the bottom face of cone is connected with the end face of disk, and cone and disk are processed one, and the axle center of spring-loaded pawl is provided with centre bore; Be arranged with two axis holes on the end face of disk; Centre bore on the spring-loaded pawl is connected with the output shaft of AC servo motor, and the endoporus of tapered sleeve matches with cone on the spring-loaded pawl, and two axis holes are furnished with a multidiameter respectively; And the disk linkage section on the multidiameter cooperates with the axis hole on the spring-loaded pawl; Thread segment on the multidiameter is exposed at outside the input end face of disk, and two deep groove ball bearings are housed on the bearing linkage section on each multidiameter, and flat belt is sleeved on four deep groove ball bearings; Two driving lever symmetries are installed on the input end face of main shaft, and the other end of each driving lever is connected with flat belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105542802A CN102476193A (en) | 2010-11-23 | 2010-11-23 | Separating type flexibly driven spindle system for high-precision processing machine tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105542802A CN102476193A (en) | 2010-11-23 | 2010-11-23 | Separating type flexibly driven spindle system for high-precision processing machine tool |
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| CN102476193A true CN102476193A (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105542802A Pending CN102476193A (en) | 2010-11-23 | 2010-11-23 | Separating type flexibly driven spindle system for high-precision processing machine tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223581A (en) * | 2018-03-12 | 2018-06-29 | 浙江工业大学 | Gas-static main shaft throttle orifice aperture adjusting device |
| CN111687432A (en) * | 2019-03-15 | 2020-09-22 | 株式会社沙迪克 | Hydrostatic fluid bearing spindle device and machine tool comprising same |
| CN115415559A (en) * | 2022-08-30 | 2022-12-02 | 哈尔滨工业大学 | Large-bearing gas static pressure main shaft with radial throttlers in non-uniform distribution |
-
2010
- 2010-11-23 CN CN2010105542802A patent/CN102476193A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223581A (en) * | 2018-03-12 | 2018-06-29 | 浙江工业大学 | Gas-static main shaft throttle orifice aperture adjusting device |
| CN108223581B (en) * | 2018-03-12 | 2023-09-05 | 浙江工业大学 | Throttle hole aperture adjusting device for aerostatic spindle |
| CN111687432A (en) * | 2019-03-15 | 2020-09-22 | 株式会社沙迪克 | Hydrostatic fluid bearing spindle device and machine tool comprising same |
| CN115415559A (en) * | 2022-08-30 | 2022-12-02 | 哈尔滨工业大学 | Large-bearing gas static pressure main shaft with radial throttlers in non-uniform distribution |
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Application publication date: 20120530 |