CN104400534A - Machine tool feeding mechanism and large-stroke nanometer resolution movement feed driving device thereof - Google Patents
Machine tool feeding mechanism and large-stroke nanometer resolution movement feed driving device thereof Download PDFInfo
- Publication number
- CN104400534A CN104400534A CN201410587762.6A CN201410587762A CN104400534A CN 104400534 A CN104400534 A CN 104400534A CN 201410587762 A CN201410587762 A CN 201410587762A CN 104400534 A CN104400534 A CN 104400534A
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- CN
- China
- Prior art keywords
- slide carriage
- machine tool
- feeding mechanism
- tool feeding
- electric motors
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- Legal status (The legal status 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 status listed.)
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
-
- 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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
-
- 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
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2414—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for indicating desired positions guiding the positioning of tools or workpieces
-
- 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
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Machine Tool Units (AREA)
Abstract
The invention provides a machine tool feeding mechanism. The machine tool feeding mechanism comprises a body, a slide carriage and a driving device, wherein the slide carriage is arranged on the body; the driving device is arranged in the movement direction of the slide carriage, is arranged on the top surface of the slide carriage and comprises two mounting seat, two linear motors, a bridge plate, two high-resolution position feedback element optical gratings, two reading heads and a movement control system; the mounting seats are connected to the slide carriage; the two linear motors are symmetrically arranged on the inner side faces of the two mounting seats; the bridge plate is used for connecting the two linear motors together; the reading heads are connected to the top surfaces of the mounting seats; the optical gratings are connected below the reading heads; the slide carriage is driven through the movement control system and the optical gratings to perform nanometer resolution movement relative to the body. According to the machine tool feeding mechanism, the linear motors are arranged above the slide carriage, and the double motors of symmetric structures are adopted for driving, so that the stable performance of the slide carriage is greatly improved; instruction setting is performed through the movement control system, so that the slide carriage can be driven to stably execute movement according to the nanometer resolution precision.
Description
[technical field]
The present invention relates to precision machine tool manufacturing technology field, particularly relate to the large-stroke nanometer resolution motion feed drive unit controlling lathe middle high-resolution kinematic system (slide carriage).
[background technology]
Nanometer resolution motion feed drive unit is applied in the main motion parts slide carriage of lathe, market has use piezoelectric ceramics as drive system, also has to use precision lead screw as drive system.
Piezoelectric ceramics is used to be the inverse piezoelectric effect based on piezoceramic material as the feed drive unit of drive system, by applying certain electric field to piezoelectric, control the deformation of piezoelectric, and then as a kind of mode of micro-move device, and control its mechanically deform and produce rectilinear motion.It is simple that it has structure, the advantage of low speed, high-torque.But the most obvious problem of this mode is that the stroke of drive motion components is very little, can not meet the processing request of large-size workpiece completely.
Use precision lead screw as the feed drive unit of drive system, for the slide carriage of large-size, the type of drive of leading screw can make slide carriage produce small swing in the movement direction, and fluctuates producing with motion vertical direction, understands motion-affecting stationarity.
Therefore, for relatively large machine slide parts, how to realize high-resolution motion, meet Long Distances and more stable movement needs simultaneously, become the problem that Machine Manufacture field needs to solve.
[summary of the invention]
For the deficiency that prior art exists, the invention provides a kind of machine tool feeding mechanism and large range nanometer grade resolution motion feed drive unit thereof, thus solve the high-resolution of large-scale moving component and the problem of robust motion.
To achieve these goals, the present invention realizes by the following technical solutions: a kind of machine tool feeding mechanism, comprise lathe bed, be arranged on the slide carriage on described lathe bed and be arranged on the drive unit in the described slide carriage direction of motion, described drive unit is arranged on the end face of described slide carriage, and described drive unit comprises two mount pads, two linear electric motors, a bridge crossing plate, two high-resolution position feedback elements gratings, two read heads and kinetic control systems; Described mount pad is connected on described slide carriage, two described linear electric motors symmetries are arranged on two described mount pad medial surfaces, two described linear electric motors are bound up by described bridge crossing plate, and described read head is connected to described mount pad end face, connects described grating below described read head; By described kinetic control system and described grating, the relatively described lathe bed of described slide carriage is driven to do the motion of nanometer resolution.
Further, magnetic isolation plate is placed with between described linear electric motors and its fixing described mount pad.
Further, coldplate is provided with between described linear electric motors and described bridge crossing plate.
Further, described read head is connected to described mount pad by support.
Further, described read head is configured with adjustment screw.
Further, described grating is arranged on grating installing plate.
Further, described slide carriage bottom surface is provided with multiple static air pressure support pads, and described static air pressure support pads is led to outside described slide carriage side by air duct, is controlled by pressure-control valve.
Further, described lathe bed is placed on above three vibration reduction supports of product word arrangement.
Drive unit of the present invention is different from existing motion driving system, and motor is placed between slide carriage and lathe bed by existing system, and a position drives.For the moving component (slide carriage) that physical dimension is larger, in the process of walking, parts can in the swing of horizontal plane generation nanometer scale, and the stationarity of motion is poor.Described linear electric motors are placed in above described slide carriage by this drive unit, adopt the Dual-motors Driving of symmetrical structure, the stationary performance of described slide carriage is improved greatly, use described linear electric motors that the link of transmission is simplified simultaneously, improve the precision of control system, and carry out instruction setting by described kinetic control system, described slide carriage can be driven steadily to perform motion according to the precision of nanometer resolution.
Your juror all can there be further understanding and understanding to object of the present invention, shape, feature and effect thereof for ease of, and elaborate with accompanying drawing in conjunction with the embodiments.
[accompanying drawing explanation]
Fig. 1 is constitutional diagram of the present invention;
Fig. 2 is structure of the linear motion actuator of the present invention and optical grating construction partial schematic diagram;
Fig. 3 is the schematic diagram of air pipe line of the present invention and static air pressure support pads connecting path.
The drawing reference numeral of detailed description of the invention illustrates:
| Lathe bed 1 | Slide carriage 2 | Static air pressure support pads 21 |
| Air duct 22 | Pressure-control valve 23 | Drive unit 3 |
| Mount pad 30 | Linear electric motors 31 | Bridge crossing plate 32 |
| Grating 33 | Grating installing plate 34 | Read head 35 |
| Adjustment screw 351 | Kinetic control system 36 | Coldplate 37 |
| Support 38 | Magnetic isolation plate 39 | Vibration reduction support 4 |
[detailed description of the invention]
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth machine tool feeding mechanism of the present invention and large range nanometer grade resolution motion feed drive unit thereof further.
Referring to Fig. 1 to Fig. 3, is the specific embodiment of the invention.Machine tool feeding mechanism comprises lathe bed 1, is arranged on the slide carriage 2 on described lathe bed 1 and is arranged on the drive unit 3 in described slide carriage 2 direction of motion, and described drive unit 3 is installed in the end face of described slide carriage 2.
Described lathe bed 1 is one and supports entity, and its upper surface and side have very high flatness, and material is the high damping such as marble or granite material, move in the above for supporting described slide carriage 2.Described lathe bed 1 is placed on above three vibration reduction supports 4 of product word arrangement, and described vibration reduction support is used for the vibration interference of isolating exterior.
Described drive unit 3 comprises two mount pads, 30, two linear electric motors, 31, bridge crossing plate, two high-resolution position feedback elements gratings, 33, two read heads 35 and a kinetic control system 36.
Described mount pad 30 is connected on described slide carriage 2, two described linear electric motors 31 symmetries are arranged on two described mount pad 30 medial surfaces, two described linear electric motors 31 are bound up by described bridge crossing plate, are provided with coldplate 37 between described linear electric motors 31 and described bridge crossing plate.
Be connected with described grating 33 below described read head 35, described grating 33 is for detecting the movement position of described slide carriage 2, and described grating 33 is fixed on described bridge crossing plate by grating installing plate 34.The signal of described grating 33 is read by described read head 35.Described read head 35 is fixed on described mount pad 30 end face by support 38, and is configured with adjustment screw 351, by described adjustment screw 351 to ensure the quality of signal.
Described slide carriage 2 bottom surface is provided with multiple static air pressure support pads 21, and described static air pressure support pads 21 is led to outside described slide carriage 2 side by air duct 22, is controlled by pressure-control valve 23.After compressed air is by described air duct 22 and pressure-control valve 23, enter the static air pressure support pads 21 in described slide carriage 2, form one deck compressed air film at described static air pressure support slot 21 and described lathe bed 1, thus described slide carriage 2 can move under almost unresisted state along the upper surface of described lathe bed 1 and side.
In order to ensure the thrust performance of described linear electric motors 31 as far as possible, be placed with magnetic isolation plate 39 by between described linear electric motors 31 and its fixing described mount pad 30.
The motion of described slide carriage 2 is by described kinetic control system 36 overall control of a set of nanometer resolution.System sends movement instruction, controls the motion of two described linear electric motors 31, is detected the movable signal of diverse location by two described gratings 33, and by signal feedback to system, then drive the relatively described lathe bed 1 of described slide carriage 2 to do the motion of nanometer resolution.
In sum, the present invention has following beneficial effect:
1. motor is placed in above slide carriage, by adopting linear motor dual-drive to move structure, effectively controls the swing of large scale in nanometer Fine Feed process, improve the stationarity of motion.
2., by adopting vibration-damping supporting structure, greatly reduce the outside interference to whole device.
3., by adopting static air pressure supporting structure, make frictional force suffered in moving component (slide carriage) motion process negligible.
4. use linear electric motors that the link of transmission is simplified, improve the precision of control system.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. a machine tool feeding mechanism, comprise lathe bed, be arranged on the slide carriage on described lathe bed and be arranged on the drive unit in the described slide carriage direction of motion, it is characterized in that: described drive unit is installed in the end face of described slide carriage, described drive unit comprises two mount pads, two linear electric motors, a bridge crossing plate, two high-resolution position feedback elements gratings, two read heads and kinetic control systems;
Described mount pad is connected on described slide carriage, two described linear electric motors symmetries are arranged on two described mount pad medial surfaces, two described linear electric motors are bound up by described bridge crossing plate, and described read head is connected to described mount pad end face, connects described grating below described read head;
By described kinetic control system and described grating, the relatively described lathe bed of described slide carriage is driven to do the motion of nanometer resolution.
2. machine tool feeding mechanism as claimed in claim 1, is characterized in that: be placed with magnetic isolation plate between described linear electric motors and its fixing described mount pad.
3. machine tool feeding mechanism as claimed in claim 1, is characterized in that: be provided with coldplate between described linear electric motors and described bridge crossing plate.
4. machine tool feeding mechanism as claimed in claim 1, is characterized in that: described read head is connected to described mount pad by support.
5. machine tool feeding mechanism as claimed in claim 1, is characterized in that: described read head is configured with adjustment screw.
6. machine tool feeding mechanism as claimed in claim 1, is characterized in that: described grating is arranged on grating installing plate.
7. machine tool feeding mechanism as claimed in claim 1, it is characterized in that: described slide carriage bottom surface is provided with multiple static air pressure support pads, described static air pressure support pads is led to outside described slide carriage side by air duct, is controlled by pressure-control valve.
8. machine tool feeding mechanism as claimed in claim 1, is characterized in that: described lathe bed is placed on above three vibration reduction supports of product word arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410587762.6A CN104400534B (en) | 2014-10-29 | 2014-10-29 | Machine tool feeding mechanism and large-stroke nanometer resolution movement feed driving device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410587762.6A CN104400534B (en) | 2014-10-29 | 2014-10-29 | Machine tool feeding mechanism and large-stroke nanometer resolution movement feed driving device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104400534A true CN104400534A (en) | 2015-03-11 |
| CN104400534B CN104400534B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410587762.6A Active CN104400534B (en) | 2014-10-29 | 2014-10-29 | Machine tool feeding mechanism and large-stroke nanometer resolution movement feed driving device thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986725A (en) * | 1989-07-18 | 1991-01-22 | Nippon Thompson Co., Ltd. | Apparatus for transporting machine tools and work tools |
| EP1174990A2 (en) * | 2000-06-20 | 2002-01-23 | Gebr. Heller Maschinenfabrik GmbH | Linear guide for electrical linear motors |
| CN101249612A (en) * | 2008-02-18 | 2008-08-27 | 哈尔滨工业大学 | Ultraprecise approximating zero friction extensible guide |
| CN101607372A (en) * | 2009-07-14 | 2009-12-23 | 南通科技投资集团股份有限公司 | But the bilinear permanent magnet synchronous motor horizontally-feeding platform of offsetting influence of gravity |
| CN101804568A (en) * | 2010-03-19 | 2010-08-18 | 中国电子科技集团公司第二研究所 | Linear motor driven air suspension motion platform |
| CN102307031A (en) * | 2011-09-08 | 2012-01-04 | 中南大学 | Magnetic suspension linear motion platform based on combination of permanent magnets and electromagnets |
| CN202240664U (en) * | 2011-10-16 | 2012-05-30 | 上海杰先自动化***有限公司 | Linear motor slipway |
-
2014
- 2014-10-29 CN CN201410587762.6A patent/CN104400534B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4986725A (en) * | 1989-07-18 | 1991-01-22 | Nippon Thompson Co., Ltd. | Apparatus for transporting machine tools and work tools |
| EP1174990A2 (en) * | 2000-06-20 | 2002-01-23 | Gebr. Heller Maschinenfabrik GmbH | Linear guide for electrical linear motors |
| CN101249612A (en) * | 2008-02-18 | 2008-08-27 | 哈尔滨工业大学 | Ultraprecise approximating zero friction extensible guide |
| CN101607372A (en) * | 2009-07-14 | 2009-12-23 | 南通科技投资集团股份有限公司 | But the bilinear permanent magnet synchronous motor horizontally-feeding platform of offsetting influence of gravity |
| CN101804568A (en) * | 2010-03-19 | 2010-08-18 | 中国电子科技集团公司第二研究所 | Linear motor driven air suspension motion platform |
| CN102307031A (en) * | 2011-09-08 | 2012-01-04 | 中南大学 | Magnetic suspension linear motion platform based on combination of permanent magnets and electromagnets |
| CN202240664U (en) * | 2011-10-16 | 2012-05-30 | 上海杰先自动化***有限公司 | Linear motor slipway |
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| CN104400534B (en) | 2017-01-18 |
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