CN111169918A - High-speed and high-precision material transmission system driven by piezoelectricity and electromagnetism in combined mode - Google Patents
High-speed and high-precision material transmission system driven by piezoelectricity and electromagnetism in combined mode Download PDFInfo
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- CN111169918A CN111169918A CN202010111271.XA CN202010111271A CN111169918A CN 111169918 A CN111169918 A CN 111169918A CN 202010111271 A CN202010111271 A CN 202010111271A CN 111169918 A CN111169918 A CN 111169918A
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- motion platform
- macro
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- rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
- B65G25/04—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors
- B65G25/06—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors having carriers, e.g. belts
- B65G25/065—Reciprocating floor conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
Abstract
The invention discloses a piezoelectric and electromagnetic compound driven high-speed and high-precision material transmission system, which comprises a base, a macro-motion platform, a micro-motion platform and a grating ruler displacement sensor, wherein the base is provided with a plurality of grooves; the macro-motion platform adopts an electromagnetic linear motor, the stator is fixed on the base, and the rotor is used for bearing the micro-motion platform; the grating reading head of the grating ruler displacement sensor is arranged on the rotor of the macro-motion platform, and the scale grating is arranged on the stator of the macro-motion platform along the motion direction of the rotor of the macro-motion platform and is used for measuring the motion displacement of the rotor of the macro-motion platform relative to the stator; the micro-motion platform adopts a piezoelectric linear motor, a stator is fixed on a rotor of the macro-motion platform, and the rotor is used for loading materials; the micro-motion platform is used for compensating the displacement of the macro-motion platform. According to the invention, through the composition of the output displacement of the macro-motion platform and the micro-motion platform, the material loaded on the micro-motion platform can be sent to a specified position, the speed jitter of the macro-motion platform can be compensated, and the device has the characteristics of high speed and high precision.
Description
Technical Field
The invention relates to the field of material transmission, in particular to a high-speed and high-precision material transmission system driven by piezoelectricity and electromagnetism in a combined mode.
Background
The intelligent manufacturing industry in China puts higher and higher requirements on the positioning accuracy and the movement speed of automatic equipment at the same time. Considering that the piezoelectric linear motor has the characteristics of high positioning precision, large self-locking force, flexible structure and the like, and the electromagnetic linear motor has the characteristics of large stroke and high power output, the high-speed and high-precision material transmission system driven by the piezoelectric and electromagnetic combination is provided.
In the domestic invention patent CN203092144U, a piezoelectric actuator using a flexible hinge amplification mechanism is provided to compensate for micro-motion. Because the adopted piezoelectric actuator has small displacement, complex structure and large energy loss in the actual working process, and in addition, the whole structure of the actuator is overlarge due to the adoption of the flexible amplifying mechanism, and the mounting space is occupied.
Disclosure of Invention
The invention aims to solve the technical problem of providing a piezoelectric and electromagnetic compound driven high-speed and high-precision material conveying system aiming at the defects related in the background technology.
The invention adopts the following technical scheme to solve the technical problems
A piezoelectric and electromagnetic compound driven high-speed and high-precision material transmission system comprises a base, a macro-motion platform, a micro-motion platform and a grating ruler displacement sensor;
the macro-motion platform adopts an electromagnetic linear motor, a stator of the macro-motion platform is fixed on the base, and a rotor of the macro-motion platform is used for bearing the micro-motion platform;
the grating reading head of the grating ruler displacement sensor is arranged on the rotor of the macro-motion platform, and the scale grating is arranged on the stator of the macro-motion platform along the motion direction of the rotor of the macro-motion platform and is used for measuring the motion displacement of the rotor of the macro-motion platform relative to the stator;
the micro-motion platform adopts a piezoelectric linear motor, a stator of the micro-motion platform is fixed on a rotor of the macro-motion platform, and the rotor of the micro-motion platform is used for loading materials; the micro-motion platform is used for compensating the displacement of the macro-motion platform.
As a further optimization scheme of the high-speed high-precision material transmission system driven by the piezoelectric and electromagnetic compound, the piezoelectric linear motor adopted by the micro-motion platform is a plate type single-foot linear motor, and a packaging design is adopted.
As a further optimization scheme of the piezoelectric and electromagnetic compound driven high-speed and high-precision material transmission system, the track of the micro-motion platform rotor is parallel to the track of the macro-motion platform rotor.
As a further optimization scheme of the piezoelectric and electromagnetic compound driven high-speed high-precision material transmission system, the track of the micro-motion platform rotor is vertical to the track of the macro-motion platform rotor.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the micro-motion platform is driven by a plate type micro piezoelectric linear motor and has the characteristics of high response and simple lubrication-free mechanism. The macro-motion platform adopts an electromagnetic linear motor structure, and can realize high thrust and high-speed output;
2. the invention also realizes the jitter compensation of the macro motion platform through the micro motion platform;
3. the workbench can respectively and independently work by using a macro-micro motion platform in actual work;
4. the piezoelectric linear motor adopted by the micro-motion platform has the characteristics of simple structure, lower cost, small volume and high precision, and has millimeter-scale stroke and micron-scale or even nano-scale positioning precision;
5. the invention can realize the functions of conveying and positioning materials with large stroke and high precision.
Drawings
FIG. 1 is a schematic structural diagram of a micro-motion platform mover and a macro-motion platform mover in the present invention, when the rails are vertically arranged;
fig. 2 is a schematic structural view of the micro-motion platform mover and the macro-motion platform mover when the rails are horizontally arranged.
In the figure, 1-a base, 2-a stator of a macro motion platform, 3-a rotor of the macro motion platform, 4-a stator of a micro motion platform, 5-a rotor of the micro motion platform, 6-a scale grating and 7-a grating reading head.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
As shown in fig. 1, the invention discloses a piezoelectric and electromagnetic compound driven high-speed and high-precision material conveying system, which comprises a base, a macro-motion platform, a micro-motion platform and a grating ruler displacement sensor, wherein the base is provided with a plurality of grooves;
the macro-motion platform adopts an electromagnetic linear motor, a stator of the macro-motion platform is fixed on the base, and a rotor of the macro-motion platform is used for bearing the micro-motion platform;
the grating reading head of the grating ruler displacement sensor is arranged on the rotor of the macro-motion platform, and the scale grating is arranged on the stator of the macro-motion platform along the motion direction of the rotor of the macro-motion platform and is used for measuring the motion displacement of the rotor of the macro-motion platform relative to the stator;
the micro-motion platform adopts a piezoelectric linear motor, a stator of the micro-motion platform is fixed on a rotor of the macro-motion platform, and the rotor of the micro-motion platform is used for loading materials; the micro-motion platform is used for compensating the displacement of the macro-motion platform.
The piezoelectric linear motor adopted by the micro-motion platform preferably adopts a plate type single-foot linear motor and adopts a packaging design.
When the micro-motion platform is arranged, the track of the micro-motion platform rotor and the track of the macro-motion platform rotor can be arranged in parallel, as shown in fig. 2; the track of the micro-motion platform mover and the track of the macro-motion platform mover may also be arranged vertically, as shown in fig. 1.
The grating ruler displacement sensor carries out position detection through the scale grating and the grating head, the micro-motion platform is placed on a rotor of the macro-motion platform, the micro-motion platform is conveyed to a position near a specified position through the motion of the macro-motion platform, and then position compensation is carried out through the micro-motion platform. The micro-motion platform adopts a piezoelectric linear motor stator, and the piezoelectric linear motor adopts a box-type structure for packaging convenience.
The macro-motion platform adopts an electromagnetic linear motor, a permanent magnet on a stator generates an excitation magnetic field, when a coil in a rotor is switched on, sine wave current is introduced to generate the excitation magnetic field, and the excitation magnetic field and a secondary magnetic field interact to generate electromagnetic thrust, so that relative linear motion is generated between the stator and the rotor.
The micro-motion platform adopts the piezoelectric linear motors, can reduce noise, improve precision and avoid lubrication, and can also adopt a mode of increasing the number of the piezoelectric linear motors for improving driving force.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A piezoelectric and electromagnetic compound driven high-speed and high-precision material transmission system is characterized by comprising a base, a macro-motion platform, a micro-motion platform and a grating ruler displacement sensor;
the macro-motion platform adopts an electromagnetic linear motor, a stator of the macro-motion platform is fixed on the base, and a rotor of the macro-motion platform is used for bearing the micro-motion platform;
the grating reading head of the grating ruler displacement sensor is arranged on the rotor of the macro-motion platform, and the scale grating is arranged on the stator of the macro-motion platform along the motion direction of the rotor of the macro-motion platform and is used for measuring the motion displacement of the rotor of the macro-motion platform relative to the stator;
the micro-motion platform adopts a piezoelectric linear motor, a stator of the micro-motion platform is fixed on a rotor of the macro-motion platform, and the rotor of the micro-motion platform is used for loading materials; the micro-motion platform is used for compensating the displacement of the macro-motion platform.
2. The piezoelectric and electromagnetic compound driven high-speed and high-precision material conveying system according to claim 1, wherein the piezoelectric linear motor adopted by the micro-motion platform is a plate type single-foot linear motor, and a packaging design is adopted.
3. The piezoelectric and electromagnetic compound driven high-speed and high-precision material conveying system as claimed in claim 1, wherein the track of the micro-motion platform mover and the track of the macro-motion platform mover are parallel.
4. The piezoelectric and electromagnetic compound driven high-speed and high-precision material conveying system as claimed in claim 1, wherein the track of the micro-motion platform mover is perpendicular to the track of the macro-motion platform mover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010111271.XA CN111169918A (en) | 2020-02-24 | 2020-02-24 | High-speed and high-precision material transmission system driven by piezoelectricity and electromagnetism in combined mode |
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| CN202010111271.XA CN111169918A (en) | 2020-02-24 | 2020-02-24 | High-speed and high-precision material transmission system driven by piezoelectricity and electromagnetism in combined mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906575A (en) * | 2020-08-04 | 2020-11-10 | 深圳市华正源数控机电设备有限公司 | Feeding device for numerical control machine tool |
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2020
- 2020-02-24 CN CN202010111271.XA patent/CN111169918A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906575A (en) * | 2020-08-04 | 2020-11-10 | 深圳市华正源数控机电设备有限公司 | Feeding device for numerical control machine tool |
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