CN109571110A - A kind of micro-feeding device of the piezoelectric ceramics cooperation lever mechanism for piston pin hole processing - Google Patents
A kind of micro-feeding device of the piezoelectric ceramics cooperation lever mechanism for piston pin hole processing Download PDFInfo
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- CN109571110A CN109571110A CN201811360435.1A CN201811360435A CN109571110A CN 109571110 A CN109571110 A CN 109571110A CN 201811360435 A CN201811360435 A CN 201811360435A CN 109571110 A CN109571110 A CN 109571110A
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- piezoelectric ceramic
- knife handle
- ceramic actuator
- pedestal
- withdrawing
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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
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/067—Blocks with collet chucks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A kind of micro-feeding device of the piezoelectric ceramics cooperation lever mechanism for piston pin hole processing, including pedestal, knife handle, boring cutter and feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator, knife handle one end is plugged in pedestal, the other end is fixedly connected with boring cutter, pedestal is passed through before and after lever shaft, knife handle links together knife handle and pedestal, it and rotate knife handle can along lever shaft, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator pass through the two sides up and down that pre-loading screw is adjustably set in pedestal respectively, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator are vertically arranged with lever shaft and inner end offsets with knife handle by caudal two sides up and down respectively, feed or when moving back down, the deformation displacement of feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator is changed into the radial displacement of cutter by lever shaft.It is the configuration of the present invention is simple, easy to manufacture, have the characteristics that high-precision, high-resolution and quick response.
Description
Technical field
The present invention relates to a kind of micro-feeding devices of piezoelectric ceramics cooperation lever mechanism, and in particular to one kind is used for piston pin
The micro-feeding device of the piezoelectric ceramics cooperation lever mechanism of hole machined.
Background technique
Piston works under the adverse circumstances of high temperature, high pressure and periodic shock, and the pressure of engine combustion gases can be led
The non-uniform deformation of activation plug.In order to be adapted working condition lower piston outer shape and cylinder block, piston pin hole with
Piston pin is adapted, and improves the bearing capacity of engine piston connecting rod component, and piston exterior mesh generation is middle-convex and varying ellipse, pin
Hole side bus is designed as hyperbola or the multistage amount of being slightly variable broken line.Wherein pin hole side bus profile error is not more than 3 μm, line segment liter
Journey taper be not more than 1:1000, i.e. cutting tool for boring axial feed 1mm, 1 μm of radial feed, it is therefore desirable to develop high-precision, high score
The fine feed apparatus of resolution just can guarantee the form accuracy of piston pin hole.
Through looking into, Chinese patent that existing patent publication No. is CN 103481106B be " a kind of ultraprecise fly-cutting machining tool
Piezoelectric ceramic type micro-feeding device ", feed shaft is machined with thin wall cavity, forms elastic film, piezoelectric ceramic actuator in its bottom
Device is mounted between pre-loading screw and elastic membrane by two semicircular body steel balls, and is connect by slip ring with driving power；Coarse adjustment
Nut is mounted in nut mounting hole, and feed shaft sequentially passes through axis hole and coarse adjustment nut, and pre-loading screw is inserted into the blind hole of feed shaft
It is interior to be threadedly coupled with internal screw thread, cutter base is installed on one end outer wall positioned at thin wall cavity of feed shaft.Fine Feed dress
Set is also to use Piezoelectric Ceramic, but the device is only able to achieve axial upper microfeed, is not able to satisfy the radial direction of pin hole processing
Feeding requires.In addition, the Wang Hong-Liang of the National University of Defense Technology also devises a kind of piston abnormity based on Piezoelectric Ceramic
Boring pin hole radial direction micro-feed mechanism, the mechanism is due to first as the support of piezoelectric ceramic actuator and guiding using flexible hinge
Part realizes displacive transformation, and rigidity is lower, it cannot be guaranteed that machining accuracy.
Summary of the invention
Simple and reasonable, easy processing add for piston pin hole technical problem to be solved by the invention is to provide a kind of
The micro-feeding device of the piezoelectric ceramics cooperation lever mechanism of work, has the characteristics that high-precision, high-resolution and quick response.
The technical scheme of the invention to solve the technical problem is: a kind of piezoelectricity pottery for piston pin hole processing
The micro-feeding device of porcelain cooperation lever mechanism, it is characterised in that: including pedestal, knife handle, boring cutter and feed Piezoelectric Ceramic
Device and withdrawing piezoelectric ceramic actuator, one end of knife handle are plugged in pedestal, and the other end stretches out outside pedestal to be fixedly connected with boring cutter,
Pedestal is passed through before and after one lever shaft, knife handle and pedestal are linked together and rotate knife handle can along lever shaft by knife handle, feed pressure
Electroceramics driver and withdrawing piezoelectric ceramic actuator pass through the two sides up and down that pre-loading screw is adjustably set in pedestal respectively,
Feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator and lever shaft be vertically arranged and feed piezoelectric ceramic actuator and
The inner end of withdrawing piezoelectric ceramic actuator offsets with knife handle by caudal two sides up and down respectively, feed or when moving back down, feed pressure
The deformation displacement of electroceramics driver and withdrawing piezoelectric ceramic actuator is changed into the radial displacement of cutter by lever shaft.
As an improvement, the outer end of the pedestal is recessed with the U-type groove planted for knife handle, the width of U-type groove is greater than knife handle
Diameter, side front-rear direction of the middle part of pedestal close to outer end offer the through hole placed for lever shaft, the front end of lever shaft
Equipped with the end face to offset with through hole, rear end is equipped with external thread section, offers the axis hole placed for lever shaft, thick stick in the middle part of knife handle
Bar axis passes through the rear end face of the front end face of pedestal, the axis hole of knife handle, pedestal, tightens fixation by a matched nut.
It improves again, the rear and front end of the axis hole of the knife handle is recessed with expanding stepped hole, and the leading portion of lever shaft forms
Offset the extension diameter section of positioning with the expanding stepped hole of the axis hole front end of knife handle, the expanding stepped hole in the axis hole rear end of knife handle
It is inside equipped with a spring, spring is set in outside lever shaft, is supported on the folder realized between the stepped hole and base internal wall to knife handle
Tightly.
Further, the two sides up and down on the pedestal positioned at knife handle inner end are offered respectively for feed piezoelectric ceramic actuator
With the location hole of withdrawing piezoelectric ceramic actuator installation, two sides have been separately formed for the drive of feed piezoelectric ceramics up and down for the inner end of knife handle
The location indentations that the end of dynamic device and withdrawing piezoelectric ceramic actuator is planted, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramics
When driver passes through the positioning hole that pre-loading screw is adjustably set in pedestal, feed or withdrawing respectively, pass through feed piezoelectricity
Ceramic driver elongation, withdrawing piezoelectric ceramic actuator are shortened or piezoelectric ceramic actuator shortens, withdrawing Piezoelectric Ceramic
Device elongation, by the rotation of lever shaft, is realized the radial feed of boring cutter or is moved back so that the generation of knife handle tail end is displaced downward or upward
Knife.
Further, the pre-loading screw uses flush end holding screw.
Further, be respectively equipped with displacement sensor in two sides up and down positioned at the tail portion of knife handle on the pedestal, pedestal up and down
Two sides offer the mounting hole for displacement sensor installation positioned at the inner end of location hole respectively, and displacement sensor is separately positioned on
It is located at the tail end of knife handle or more two sides in mounting hole.
Finally, the tail end of the pedestal is quickly connect using taper shank with machine tool chief axis.
Compared with the prior art, the advantages of the present invention are as follows: using two piezoelectric ceramics as driver, improve feeding point
Resolution and precision；Lever shaft is set, displacive transformation is realized by lever mechanism, eliminates the error that flexible hinge generates；In lever
Spring is arranged on axis to clamp knife handle, gyration aperture is eliminated using spring pressure, improves precision.The configuration of the present invention is simple is easy to
Processing and manufacturing has the characteristics that high-precision, high-resolution and quick response.
Detailed description of the invention
Fig. 1 is the main view of micro-feeding device provided by the invention；
Fig. 2 is top view of the invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, 2, a kind of micro-feeding device of the piezoelectric ceramics cooperation lever mechanism for piston pin hole processing, packet
Include pedestal 1, knife handle 2, boring cutter 3, lever shaft 4 and feed piezoelectric ceramic actuator 5 and withdrawing piezoelectric ceramic actuator 6, pedestal 1
Tail end quickly connect with machine tool chief axis using taper shank 11, the outer end of pedestal 1 is recessed with the U-type groove 12 for the plant of knife handle 2, U-shaped
The width of slot 12 is greater than the diameter of knife handle 2, and one end of knife handle 2 is plugged in pedestal 1, and the other end stretches out outside pedestal 1 and boring cutter 3 is logical
Screw to be crossed to be fixedly connected, side front-rear direction of the middle part of pedestal 1 close to outer end offers the through hole placed for lever shaft 4,
The front end of lever shaft 4 is equipped with the end face 41 to offset with through hole, and rear end is equipped with external thread section 42, and the middle part of knife handle 2 offers confession
The axis hole that lever shaft 4 places, lever shaft 4 pass through the rear end face of the front end face of pedestal 1, the axis hole of knife handle 2, pedestal 1, match by one
The nut 9 of set tightens fixation, and knife handle 2 is linked together with pedestal 1 and rotate knife handle 2 can along lever shaft 44；Knife handle 2
The rear and front end of axis hole is recessed with expanding stepped hole, and the leading portion of lever shaft 4 forms expanding with the axis hole front end of knife handle
Stepped hole offsets the extension diameter section of positioning, a spring 10 is equipped in the expanding stepped hole of the axis hole rear end of knife handle 2, spring 10 is adopted
With cylindroid helical-coil compression spring, spring 10 is set in outside lever shaft 4, is supported between 1 inner wall of the stepped hole and pedestal to realize
Clamping to knife handle 2, while eliminating the gyration aperture of knife handle 4；Feed piezoelectric ceramic actuator 5 and withdrawing piezoelectric ceramic actuator
6 are adjustably set in the two sides up and down of pedestal 1, feed piezoelectric ceramic actuator 5 and withdrawing piezoelectricity by pre-loading screw 8 respectively
Ceramic driver 6 is vertically arranged with lever shaft 4, and the two sides up and down on pedestal 1 positioned at 2 inner end of knife handle are offered respectively for feed pressure
The inner end of the location hole that electroceramics driver 5 and withdrawing piezoelectric ceramic actuator 6 are installed, knife handle 2 has been separately formed two sides up and down
For the location indentations that the end of feed piezoelectric ceramic actuator 5 and withdrawing piezoelectric ceramic actuator 6 is planted, feed piezoelectric ceramics is driven
Dynamic device 5 and withdrawing piezoelectric ceramic actuator 6 are adjustably set in the positioning hole of pedestal by pre-loading screw 8 respectively, pre-tighten
Screw 8 uses flush end holding screw, when feed or withdrawing, the change of feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator
Morpheme is moved so that the generation of knife handle tail end is displaced downward or upward, by the rotation of lever shaft 4, realize boring cutter 3 radial feed or
Withdrawing overcomes the problems, such as that spring rates of flexure hinges is low；Two sides are respectively equipped with displacement biography above and below the tail portion of knife handle 2 on pedestal 1
Sensor 7, the two sides up and down of pedestal 1 offer the mounting hole installed for displacement sensor 7, position positioned at the inboard of location hole respectively
Displacement sensor 7 is separately positioned in mounting hole the two sides above and below the tail end of knife handle 2, for detecting actual displacement, control system
By calculating the difference of actual displacement and desired displacement, actual displacement is compensated.
When specific operation, feed piezoelectric ceramic actuator 5 and withdrawing piezoelectric ceramic actuator 6 are adjusted by pre-loading screw 8
Initial position, knife handle 2 realize clamping by the end face of lever shaft 4 and axis positioning, and by spring 10, and knife handle 2 can surround thick stick
Bar axis 4 rotates, and eliminates gyration aperture by the pressure of spring 10, and lever shaft 4 is positioned and led to by end face on pedestal 1 and hole
Cross the fixation of nut 9 realization and pedestal 1.Boring cutter 3 is fixed by screw and knife handle 2, and 2 tail portion of knife handle is equipped with displacement sensor 7, base
Seat 1 is quickly connect by the taper shank 11 of tail portion 7:24 with machine tool chief axis realization.
When feed, feed piezoelectric ceramic actuator 5 applies voltage as power source, and withdrawing piezoelectric ceramic actuator 6 reduces
Voltage, feed piezoelectric ceramic actuator 5 extend, and withdrawing piezoelectric ceramic actuator 6 shortens, and 2 tail end of knife handle is generated to bottom offset, lead to
The rotation of lever shaft 4 is crossed, boring cutter 3 realizes radial feed.When withdrawing, feed piezoelectric ceramic actuator 5 reduces voltage, withdrawing piezoelectricity
Ceramic driver 6 applies voltage as power source, and feed piezoelectric ceramic actuator 5 shortens, and withdrawing piezoelectric ceramic actuator 6 is stretched
Long, the generation of 2 tail end of knife handle shifts up, and by the rotation of lever shaft 4, boring cutter 3 realizes radial withdrawing；Spring 10 is for eliminating thick stick
The gyration aperture of linkage；2 tail end of knife handle is equipped with displacement sensor 7, and for detecting actual displacement, control system is real by calculating
The difference of border displacement and desired displacement, compensates actual displacement.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of micro-feeding device of the piezoelectric ceramics cooperation lever mechanism for piston pin hole processing, it is characterised in that: including
Pedestal, knife handle, boring cutter and feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator, one end of knife handle are plugged on pedestal
Interior, the other end stretches out outside pedestal to be fixedly connected with boring cutter, passes through pedestal before and after a lever shaft, knife handle and pedestal are connected to by knife handle
It together and rotate knife handle can along lever shaft, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator pass through pre- respectively
Tight screw is adjustably set in the two sides up and down of pedestal, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator and thick stick
Bar axis is vertically arranged and the inner end of feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator is respectively with knife handle by caudad
Two sides up and down offset, feed or when moving back down, the deformation displacement of feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator
It is changed into the radial displacement of cutter by lever shaft.
2. micro-feeding device according to claim 1, it is characterised in that: the outer end of the pedestal is recessed with plants for knife handle
U-type groove, the width of U-type groove is greater than the diameter of knife handle, and side front-rear direction of the middle part of pedestal close to outer end is offered for thick stick
The through hole that bar axis places, the front end of lever shaft are equipped with the end face to offset with through hole, and rear end is equipped with external thread section, in knife handle
Portion offers the axis hole placed for lever shaft, and lever shaft passes through the rear end face of the front end face of pedestal, the axis hole of knife handle, pedestal, leads to
It crosses a matched nut and tightens fixation.
3. micro-feeding device according to claim 2, it is characterised in that: the rear and front end of the axis hole of the knife handle is recessed with
Expanding stepped hole, the leading portion of lever shaft is formed to offset the expanding of positioning with the expanding stepped hole of the axis hole front end of knife handle
Section is equipped with a spring in the expanding stepped hole of the axis hole rear end of knife handle, and spring is set in outside lever shaft, is supported on the step
The clamping to knife handle is realized between hole and base internal wall.
4. micro-feeding device according to claim 3, it is characterised in that: the spring uses cylindroid helical-coil compression spring.
5. any one of micro-feeding device according to claim 1~4, it is characterised in that: be located at knife handle on the pedestal
The two sides up and down of inner end offer the location hole for feed piezoelectric ceramic actuator and the installation of withdrawing piezoelectric ceramic actuator respectively,
Two sides are separately formed above and below the inner end of knife handle inserts for the end of feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator
The location indentations set, feed piezoelectric ceramic actuator and withdrawing piezoelectric ceramic actuator pass through pre-loading screw respectively and adjustably wear
When setting the positioning hole in pedestal, feed or withdrawing, pass through the elongation of feed piezoelectric ceramic actuator, withdrawing piezoelectric ceramic actuator
Shorten or piezoelectric ceramic actuator shortens, withdrawing piezoelectric ceramic actuator extends, so that knife handle tail end generates downward or upward
Displacement, by the rotation of lever shaft, realizes the radial feed or withdrawing of boring cutter.
6. micro-feeding device according to claim 5, it is characterised in that: the pre-loading screw uses flush end holding screw.
7. micro-feeding device according to claim 5, it is characterised in that: on the pedestal two above and below the tail portion of knife handle
Side is respectively equipped with displacement sensor, and the two sides up and down of pedestal offer respectively positioned at the inner end of location hole and pacify for displacement sensor
The mounting hole of dress, displacement sensor are separately positioned in mounting hole the two sides above and below the tail end of knife handle.
8. any one of micro-feeding device according to claim 1~4, it is characterised in that: the tail end of the pedestal uses
Taper shank is quickly connect with machine tool chief axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360435.1A CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360435.1A CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109571110A true CN109571110A (en) | 2019-04-05 |
| CN109571110B CN109571110B (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811360435.1A Active CN109571110B (en) | 2018-11-15 | 2018-11-15 | Micro-feeding device of piezoelectric ceramic matched lever mechanism for processing piston pin hole |
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| CN (1) | CN109571110B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705903A (en) * | 2020-12-18 | 2021-04-27 | 湖南江滨机器（集团）有限责任公司 | Lathe tailstock repairing method |
| CN114042960A (en) * | 2021-12-03 | 2022-02-15 | 湖南江滨机器（集团）有限责任公司 | Piston pin hole machining device and machining method thereof |
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| CN114042960A (en) * | 2021-12-03 | 2022-02-15 | 湖南江滨机器（集团）有限责任公司 | Piston pin hole machining device and machining method thereof |
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| CN109571110B (en) | 2021-01-12 |
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