CN203896218U - Cross-stroke precision positioning operation platform - Google Patents

Cross-stroke precision positioning operation platform Download PDF

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Publication number
CN203896218U
CN203896218U CN201420329873.2U CN201420329873U CN203896218U CN 203896218 U CN203896218 U CN 203896218U CN 201420329873 U CN201420329873 U CN 201420329873U CN 203896218 U CN203896218 U CN 203896218U
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CN
China
Prior art keywords
cam
inertial mass
piezoelectric ceramic
precision positioning
slide unit
Prior art date
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.)
Withdrawn - After Issue
Application number
CN201420329873.2U
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Chinese (zh)
Inventor
汝长海
庞明
王勇
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Harbin Engineering University
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Harbin Engineering University
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Priority to CN201420329873.2U priority Critical patent/CN203896218U/en
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Publication of CN203896218U publication Critical patent/CN203896218U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to a cross-stroke precision positioning operation platform, which comprises a piezoelectric ceramic used for driving and is characterized by further comprising a fixed base and a sliding table, wherein the piezoelectric ceramic and an inertial mass block are arranged on the fixed base, the piezoelectric ceramic and the inertial mass block are connected, and the piezoelectric ceramic can push the inertial mass block to move horizontally; a cam is arranged above the inertial mass block, the inertial mass block can drive the cam to rotate in an adhesive sliding mode, and the top surface of the inertial mass block is correspondingly coated with a friction ceramic; and the sliding table is internally provided with an enclosed slot, the cam is located in the enclosed slot, and the cam can drive the sliding table to slide relative to the fixed base.

Description

Inter-bank journey precision positioning operating desk
Technical field
The utility model relates to a kind of inter-bank journey precision positioning operating desk.
Background technology
In traditional precision positioning technology, most location and operation are all to realize by Piezoelectric Ceramic.Yet the displacement that piezoelectric effect produces is very little, and length is that the piezoelectric ceramic of tens millimeters can only be realized the range of movement of tens microns conventionally.This needs to be again subject to larger restriction compared with the scientific research of large moving range with regard to making much to depend on precision positioning technology simultaneously.
In maximally related prior art, denomination of invention is for the flexible hinge radial rigidity that " one-dimensional micro-displacement unit " patent (publication number CN101702329A) has solved existing micro-displacement apparatus is little, radially bearing capacity is little, and the problem that is difficult to accurately control output.Denomination of invention is " high-precision adjustable-speed linear micro-displacement work table " patent (publication number CN101860256A), by piezoelectric actuator and plane three compliant mechanism compound motions realized that precision is high, stroke large (range is unrestricted in theory), load are large, step pitch and response frequency can be in harmonious proportion the high Micro-displacement Technique of electromechanical conversion efficiency, can meet different instructions for use in accurate manufacture, detection and microoperation field.But the weak point that aforementioned two patents all exist is, delivery stroke is short, complex structure, and kinematic accuracy is not high.
Summary of the invention
Goal of the invention of the present utility model is to provide a kind of inter-bank journey precision positioning operating desk, and delivery stroke is long, simple in structure, and kinematic accuracy is high.
Realize the technical scheme of the present utility model object:
A kind of inter-bank journey precision positioning operating desk, comprise the piezoelectric ceramic for driving, it is characterized in that: also comprise fixed pedestal, slide unit, piezoelectric ceramic, inertial mass are arranged on fixed pedestal, piezoelectric ceramic is connected with inertial mass, and piezoelectric ceramic can promote inertial mass and move horizontally; Inertial mass top is provided with cam, and inertial mass can rotate by stick-slip driving cam, the corresponding friction pottery that scribbles of inertial mass end face; In slide unit, have shape enclosed slot, cam is positioned at shape enclosed slot, and cam can drive the relative fixed pedestal of slide unit to slide.
Slide unit both sides are provided with shape rail closure, and corresponding being provided with in retainer, retainer of fixed pedestal is provided with roller, and aforementioned shape rail closure, retainer, roller form rolling guide-rail pairs.
Cam adopts constant breadth cam; Cam is arranged on rotary middle spindle by pre-load nut, butterfly spring, and butterfly spring is positioned at the below of cam, and rotary middle spindle and fixed pedestal are fixed.
The side of slide unit is provided with the grating for real-time displacement feedback.
Piezoelectric ceramic adopts and stacks type piezoelectric ceramic.
The beneficial effect the utlity model has:
The utility model proposes a kind of inter-bank journey precision positioning operating desk based on stick-slip principle and cam drive of Piezoelectric Ceramic, the utility model piezoelectric ceramic can promote inertial mass and move horizontally, inertial mass can rotate by stick-slip driving cam, cam can drive the relative fixed pedestal of slide unit to slide, stick-slip drives large with its driving scope, resolution is high, simple in structure, volume is little, the high outstanding advantages that waits of integrated level, be highly suitable for micro-nano field operation, in conjunction with cam mechanism compact conformation, the reliable feature of moving, can fully meet the requirement of precisely locating platform to transmission.The utility model delivery stroke is long, simple in structure, and kinematic accuracy is high.
Accompanying drawing explanation
Fig. 1 is the utility model motion principle figure;
Fig. 2 is the utility model structural representation.
Embodiment
As shown in Fig. 2, Fig. 1, piezoelectric ceramic 4, inertial mass 5 are arranged on fixed pedestal 9, and fixed pedestal 9 bottoms are provided with mounting groove, and during enforcement, piezoelectric ceramic adopts and stacks type piezoelectric ceramic.Piezoelectric ceramic 4 is connected with inertial mass 5, and piezoelectric ceramic 4 can promote inertial mass 5 and move horizontally, and the quality of inertial mass 5 is determined according to the mechanical property of piezoelectric ceramic 4.Inertial mass 5 tops are provided with cam 3, and inertial mass 5 can rotate by stick-slip driving cam 3, the corresponding friction pottery that scribbles of inertial mass 5 end faces.In slide unit 1, have shape enclosed slot 7, cam 3 is positioned at shape enclosed slot 7, and the concrete size of shape enclosed slot 7 determines by designed constant breadth cam 3 sizes, and cam can drive the relative fixed pedestal of slide unit 1 to slide.The both sides of slide unit 1 are provided with shape rail closure 6, and corresponding being provided with in retainer 2, retainer 2 of fixed pedestal is provided with roller 10, and aforementioned shape rail closure 6, retainer 2, roller 10 form rolling guide-rail pairs.
Cam is arranged on rotary middle spindle 12 by pre-load nut 8, butterfly spring 11, and butterfly spring 11 is positioned at the below of cam 3, and rotary middle spindle 12 is fixing with fixed pedestal 9.Butterfly spring 11 and pre-load nut 8 are standard component, according to the size of rotary middle spindle and constant breadth cam 3, determine its size, can be used to regulate the size of inertial mass 5 and the contact force of constant breadth cam 3 contact-making surfaces; Cam 3 adopts constant breadth cam; Can determine concrete size according to concrete movement travel, adopt three pairs of circular arcs to form cam outline in the present embodiment, the centre bore of constant breadth cam 3 and rotary middle spindle 12 are little matched in clearance.The side of slide unit 1 is provided with the grating for real-time displacement feedback.
During work, power supply signal is sawtooth voltage, and its concrete voltage magnitude and frequency can be according to selected piezoelectric ceramic values.Under the driving of power supply signal, piezoelectric ceramic 4 has produced corresponding displacement, and the inertial mass 5 that promotes to be attached thereto moves, and inertial mass 5 is by ceramic constant breadth cam 3 frictional force to contacting with it that rub, actuating cam 3 rotates around rotary middle spindle, drives slide unit 1 to move.
According to above-mentioned drive form, according to type of drive difference, be divided into two kinds of step-by-step system and scan modes:
Step-by-step system can realize across yardstick, high-speed motion.Under power drives, constantly there is replacing of " gluing ", " cunning " with constant breadth cam 3 surfaces in inertial mass 5, thereby driving cam 3 constantly rotates, owing to conventionally adopting the less piezoelectric ceramic of range of movement in stick-slip drives, be generally the range of movement that hundreds of nanometer arrives several microns, therefore the resolution of step-by-step system is higher, can reach submicron order;
Scan mode to move compared with jogging speed, is with movable slider by piezoelectric ceramic 4, thereby driving cam 3 rotates, realize accurately location, common sweep limits is exactly the maximum deformation quantity of piezoelectric ceramic 4, and its scanning resolution is the resolution of piezoelectric ceramic 4, is generally nanoscale.

Claims (5)

1. an inter-bank journey precision positioning operating desk, comprise the piezoelectric ceramic for driving, it is characterized in that: also comprise fixed pedestal, slide unit, piezoelectric ceramic, inertial mass are arranged on fixed pedestal, piezoelectric ceramic is connected with inertial mass, and piezoelectric ceramic can promote inertial mass and move horizontally; Inertial mass top is provided with cam, and inertial mass can rotate by stick-slip driving cam, the corresponding friction pottery that scribbles of inertial mass end face; In slide unit, have shape enclosed slot, cam is positioned at shape enclosed slot, and cam can drive the relative fixed pedestal of slide unit to slide.
2. inter-bank journey precision positioning operating desk according to claim 1, it is characterized in that: slide unit both sides are provided with shape rail closure, corresponding being provided with in retainer, retainer of fixed pedestal is provided with roller, and aforementioned shape rail closure, retainer, roller form rolling guide-rail pairs.
3. inter-bank journey precision positioning operating desk according to claim 2, is characterized in that: cam adopts constant breadth cam; Cam is arranged on rotary middle spindle by pre-load nut, butterfly spring, and butterfly spring is positioned at the below of cam, and rotary middle spindle and fixed pedestal are fixed.
4. inter-bank journey precision positioning operating desk according to claim 3, is characterized in that: the side of slide unit is provided with the grating for real-time displacement feedback.
5. inter-bank journey precision positioning operating desk according to claim 4, is characterized in that: piezoelectric ceramic adopts and stacks type piezoelectric ceramic.
CN201420329873.2U 2014-06-19 2014-06-19 Cross-stroke precision positioning operation platform Withdrawn - After Issue CN203896218U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420329873.2U CN203896218U (en) 2014-06-19 2014-06-19 Cross-stroke precision positioning operation platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420329873.2U CN203896218U (en) 2014-06-19 2014-06-19 Cross-stroke precision positioning operation platform

Publications (1)

Publication Number Publication Date
CN203896218U true CN203896218U (en) 2014-10-22

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CN201420329873.2U Withdrawn - After Issue CN203896218U (en) 2014-06-19 2014-06-19 Cross-stroke precision positioning operation platform

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104079204A (en) * 2014-06-19 2014-10-01 哈尔滨工程大学 Cross-stroke precision positioning operating desk
CN106059380A (en) * 2016-06-06 2016-10-26 长春工业大学 Single hook type displacement transfer mechanism piezoelectric stick-slip linear motor and motivation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104079204A (en) * 2014-06-19 2014-10-01 哈尔滨工程大学 Cross-stroke precision positioning operating desk
CN106059380A (en) * 2016-06-06 2016-10-26 长春工业大学 Single hook type displacement transfer mechanism piezoelectric stick-slip linear motor and motivation method thereof
CN106059380B (en) * 2016-06-06 2017-10-03 长春工业大学 Single hook type displacement converted mechanism piezoelectricity stick-slip linear electric motors and its motivational techniques

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20141022

Effective date of abandoning: 20160504

C25 Abandonment of patent right or utility model to avoid double patenting