CN110153768A - A kind of sharp knife structure adjusting rigidity at remote knife end - Google Patents
A kind of sharp knife structure adjusting rigidity at remote knife end Download PDFInfo
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- CN110153768A CN110153768A CN201910439399.6A CN201910439399A CN110153768A CN 110153768 A CN110153768 A CN 110153768A CN 201910439399 A CN201910439399 A CN 201910439399A CN 110153768 A CN110153768 A CN 110153768A
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- frame
- adjusting
- remote
- rigidity
- knife
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Cutting Devices (AREA)
Abstract
The invention discloses a kind of sharp knife structures that rigidity is adjusted at remote knife end, it solves the problems, such as that carrying out stiffness tuning to sharp knife structure in the prior art easily causes hinge and leaf spring deformation, it is rationally compact with design, realize the beneficial effect of displacement regulated linear output, its scheme is as follows: a kind of sharp knife structure adjusting rigidity at remote knife end, including frame；Lever amplifying mechanism is set in frame, and lever amplifying mechanism includes multiple groups, is contacted or is connected with the end of driver on the inside of one end of each group of lever amplifying mechanism；For connecting the cutter link block of cutter, cutter link block is connected by the other end of the first flexible hinge and lever amplifying mechanism, and flexible guiding mechanism is equipped between the two sides and frame of cutter link block；Micro-adjusting mechanism passes through frame and is arranged, and micro-adjusting mechanism is contacted across the end of frame with lever amplifying mechanism to realize the rigidity for adjusting sharp knife structure from remote knife end.
Description
Technical field
The present invention relates to fast tool servo fields, more particularly to a kind of sharp knife structure for adjusting rigidity at remote knife end.
Background technique
Fast tool servo system is typically mounted on non-circular numerically controlled cutting or the lathe of asymmetric turning, is non-circular sections part
With the key technology of non-axis symmetry (i.e. non-rotational symmetry) optical effect correction.In turning process, main shaft drives workpiece rotation, knife
Tool is under the driving of FTS, with the associated frequency of the speed of mainshaft along workpiece radial (for non-circular turning) or axially (for non-axis
Symmetrical turning) reciprocating feed movement is done, to process on-circular cross-section profile or the non-axis symmetry end face of workpiece.
The stiffness tuning point of fast tool servo system has itself not generally within nearly knife end, this stiffness tuning mode at present
Evitable defect, specific as follows:
First, since the point of adjustment of regulating mechanism is in nearly knife end position, distance displacement outlet terminal is closer, stiffness tuning
Asymmetry will have a huge impact the linear and stability of displacement output so that the accuracy of sharp knife structure significantly under
Drop；
Second, existing regulating mechanism low efficiency by way of changing nearly knife end rigidity of plate spring and realizing that system stiffness changes
Under, leaf spring could be changed in this axial very big rigidity by needing to apply biggish external force；
Third, it is existing change nearly knife end rigidity of plate spring realize system stiffness change by way of will be outstanding to overall mechanism
It is that leaf spring and hinge generate expendable plastic deformation, is easily integrally damaged to mechanism.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of sharp knife structure that rigidity is adjusted at remote knife end, energy
It is enough that stiffness tuning is carried out to sharp knife structure, and overall structure is easily worked, interchangeability is high, anti-fatigue ability is strong.
A kind of concrete scheme for the sharp knife structure adjusting rigidity at remote knife end is as follows:
A kind of sharp knife structure adjusting rigidity at remote knife end, comprising:
Frame；
Lever amplifying mechanism is set in frame, and lever amplifying mechanism includes multiple groups, and the one of each group of lever amplifying mechanism
End inside contacts or connects with the end of driver；
For connecting the cutter link block of cutter, cutter link block is another by the first flexible hinge and lever amplifying mechanism
One end connection, is equipped with flexible guiding mechanism between the two sides and frame of cutter link block；
Micro-adjusting mechanism passes through frame and is arranged, and micro-adjusting mechanism is contacted across the end of frame with lever amplifying mechanism with reality
The rigidity of sharp knife structure is now adjusted from remote knife end.
A kind of above-mentioned sharp knife structure that rigidity is adjusted at remote knife end, driver is driven, to pass through lever amplification
The elongation of mechanism end output setting by the release of the first flexible hinge, then transmits output and gives cutter link block, thus right
The forward-reverse movement of cutter is adjusted, and cutter link block end is unique displacement delivery outlet, can be to a certain extent
It eliminates in the prior art in the difference of nearly the applied rigidity in knife end.
Further, for convenience to the arrangement of sharp knife structure, the lever amplifying mechanism is L-type, lever amplifying mechanism
Including two groups, two groups of lever amplifying mechanisms are symmetrically set in the groove, and the end of two groups of lever amplifying mechanisms each by
First flexible hinge is connect with the cutter link block, and unique displacement delivery outlet is formed at such cutter link block.
Further, the second flexible hinge is set between the lever amplifying mechanism and the frame, in this way for realizing
The steering of lever amplifying mechanism provides the movement fulcrum of lever amplifying mechanism.
Further, drive block, drive block and lever amplification are set between the lever amplifying mechanism and the driver
It is equipped with third flexible hinge between mechanism side, the parasitic position of lever amplifying mechanism in the longitudinal direction is avoided by the setting of drive block
Shifting damages driver, i.e., eliminates parasitic displacement by the rotation of third flexible hinge.
Further, grating frame is arranged in the side of the cutter link block in the frame, and grating reading is arranged in grating frame
Grating scale is arranged in the cutter link block in head, and grating scale and grating reading head are setting up and down for determining cutter link block
Displacement, realize cutter back and forth movement accurate displacement measurement.
Further, adjustment hole is arranged in the frame, and the micro-adjusting mechanism is arranged across adjustment hole.
Further, the micro-adjusting mechanism includes two groups, and two groups of micro-adjusting mechanisms are symmetrically set in the frame, such cutter
Regulated quantity mean value will be taken at link block, the guiding mechanism for being aided with nearly knife end, which is realized, is displaced stable linear convergent rate；Each fine tuning
Mechanism includes differential head, elastic component and locking cap, and elastic component and locking cap are set in adjustment hole, and one end of elastic component and institute
It states lever amplifying mechanism side to offset, differential cephalic par offsets with locking cap, and differential head is threadedly coupled with adjustment hole；Pass through two
Being symmetrical arranged for group micro-adjusting mechanism, can guarantee the symmetry of frame two sides fine tuning, can reach using smaller power more excellent
Stiffness tuning effect.
Further, the cutter link block protrudes from the frame setting, because the end of cutter link block connects knife
Tool, therefore the cutter link block being provided projectingly facilitates the setting of cutter.
Further, the driver is piezoelectric ceramics bidirectional drive, and respectively activation lever is amplified at the both ends of driver
One end of mechanism.
By the setting of symmetrical lever amplifying mechanism, stiffness tuning is avoided while structure output stroke can be improved not
Symmetrically to the influence of output end movement output, solves output end hinge or leaf spring in usual stiffness tuning mode and adjust asymmetry
The problem of causing displacement output biasing, stroke alteration, it is of great advantage for the long-term or high-frequency work operation of structure.
Further, the setting direction of the micro-adjusting mechanism is identical as the setting direction of the driver, in order to drive
The pretightning force of dynamic device carries out the adjusting of rigidity.
Compared with prior art, the beneficial effects of the present invention are:
1) (in contrast with nearly knife end, closely the present invention is by being set to remote knife end by the rigidity micro-adjusting mechanism of sharp knife structure
Knife end is arranged close to cutter) arrangement form the rigidity of sharp knife structure is adjusted, it is outer by applying to lever amplifying mechanism
Power realize stiffness tuning, avoid in the past nearly knife end to rigidity be adjusted caused by hinge or leaf spring plastic deformation ask
Topic, and the adjusting force of required application is smaller, regulating effect is more preferable, and has the higher stiffness tuning upper limit.
2) lever amplifying mechanism that the present invention is arranged symmetrically by multiple groups, not only realizes the bigger position in sharp knife structure output end
Output is moved, and avoids the generation of parasitic displacement, improves the stability and reliability of sharp knife structure.
3) setting that unique delivery outlet is displaced in the present invention can will export after asymmetric stiffness tuning measurement mean value, avoid
Asymmetric stiffness regulated quantity directly affecting for displacement output in previous nearly knife end stiffness tuning technology, effectively reduces fast
The displacement output of knife system is for adjusting asymmetric sensibility.
4) overall structure of the present invention is simple, and easy processing, manufacturing cost are low, interchangeability is high, anti-fatigue ability is strong.
5) present invention changes rigidity by applying external force to lever amplifying mechanism by the setting of elastic component, will not be to whole
Body mechanism generates destruction.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is overall structure figure in the embodiment of the present invention；
Fig. 2 is overall structure perspective view of the explosion in the embodiment of the present invention；
Fig. 3 is integrally-built top view in the embodiment of the present invention；
Fig. 4 is integrally-built main view in the embodiment of the present invention；
Fig. 5 is integrally-built left view in the embodiment of the present invention；
In figure, 1- driver, 2- lever amplifying mechanism, the first flexible hinge of 3-, 4- cutter, 5- grating frame, 6- freqency fine adjustment machine
Structure, 7- grating reading head, 8- cutter link block, 9- flexible guiding mechanism, 10- frame, 11- spring, 12- spring compressor, 13- are micro-
Separately, 14- drive block, 15- third flexible hinge, the second flexible hinge of 16-.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this hair
It is bright to propose a kind of sharp knife structure that rigidity is adjusted at remote knife end.With reference to the accompanying drawings of the specification, the present invention is done further
It illustrates.
In a kind of typical embodiment of the invention, as shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4 and Fig. 5, one kind is in remote knife
End adjusts the sharp knife structure of rigidity, including frame 10,10 inner hollow of frame；Lever amplifying mechanism 2 is set in frame 10, and
Lever amplifying mechanism 2 includes multiple groups, contacts or connects with the end of driver 1 on the inside of one end of each group of lever amplifying mechanism 2
It connects；For connecting the cutter link block 8 of cutter 4, cutter link block 8 is another by the first flexible hinge 3 and lever amplifying mechanism 2
One end connection, is equipped with flexible guiding mechanism between the two sides and frame of cutter link block 8；Micro-adjusting mechanism 6 is set across frame 10
It sets, and micro-adjusting mechanism 6 is contacted across the end of frame 10 with lever amplifying mechanism 2, by the rotation of micro-adjusting mechanism 6, to pass through
2 adjustment effect of lever amplifying mechanism is in the pretightning force of driver 1, to realize the stiffness equivalent of total.
Wherein, flexible guiding mechanism is the flexible leaf spring 9 set on cutter link block two sides, flexible leaf spring 9 and frame side
Side is arranged in parallel, and flexible leaf spring 9 has set distance apart from lever amplifying mechanism, is disappeared by the setting of flexible guiding mechanism
Except cutter perpendicular in direction of feed vibration or parasitic displacement.
Lever amplifying mechanism 2 is L-type, and lever amplifying mechanism 2 includes two groups, and two groups are flexible lever enlarger, two
Group lever amplifying mechanism 2 is symmetrically set in groove, and driver 1 is piezoelectric ceramics bidirectional drive, lever amplifying mechanism 2 and institute
The distance that setting is equipped between flexible guiding mechanism is stated, two groups of lever amplifying mechanisms 2 are between the end of cutter link block 8
It is spaced set distance setting.
The side of lever amplifying mechanism 2 and frame 10 have at a distance from setting, lever amplifying mechanism 2 and the frame 10 it
Between the second flexible hinge 16 is set, by the setting of the second flexible hinge 16 for being turned to lever amplifying mechanism 2.Lever
Drive block 14 is set between enlarger 2 and driver 1, and it is soft to be equipped with third between 2 side of drive block 14 and lever amplifying mechanism
Property hinge 15, lever amplifying mechanism 2 has apart from frame 10 distance of setting relative to the other end of the first flexible hinge 3 of setting,
The end is not connect with frame 10, and the second flexible hinge 16 and third flexible hinge 15 shift to install, and the second flexible hinge 16 leans on
The end setting of nearly lever amplifying mechanism 2.
Cutter link block 8 protrudes from the frame 10 and is arranged, and avoids the interference to tool motion, under static, cutter connection
Block is set to the center line of frame, and frame 10, lever amplifying mechanism 2, flexible leaf spring 9, grating frame 4 and cutter link block 8 are one
Body formula structure is formed by one piece of metal plate cutting processing.
Frame 10 is rectangle frame, and grating frame 5 is arranged in the side of cutter link block 8 in frame 10, and grating frame 5 is gate, horizontal
Two sides setting across frame 10, and grating frame 5 is set to the top of cutter link block 8, grating reading head 7 is arranged in grating frame 5, in institute
State cutter link block 8 be arranged grating scale, grating scale along cutter link block 8 width direction (the length side of frame or grating frame
To) setting, grating scale and grating reading head 7 are setting up and down for determining the displacement of cutter link block 8.
Adjustment hole is arranged in frame 10, and micro-adjusting mechanism 6 is arranged across adjustment hole.Micro-adjusting mechanism 6 includes two groups, two groups of freqency fine adjustment machines
Structure 6 is symmetrically set in the frame 10, and each micro-adjusting mechanism includes differential head 13, elastic component and locking cap, elastic component and fixation
Cap is set in adjustment hole, and one end of elastic component offsets with the lever amplifying mechanism side, 13 end of differential head and fixation
Cap offsets, and differential head 13 is threadedly coupled with adjustment hole.
Elastic component is spring 11, and locking cap is spring compressor, and one end of lever amplifying mechanism 2 is withstood in 11 one end of spring, another
End is withstood by spring compressor 12, and spring compressor 12 and adjustment hole are axis hole clearance fit, while being equipped with screw thread, differential adjusting bore end
First 13 are threadedly secured in adjustment hole, and differential head 13 uses commercial product, and differential crown bar withstands spring compressor 12.Work as rotation
When turning differential head 13, it can micron-sized precision precession screws out differential crown bar, makes pottery to change spring 11 for piezoelectricity
The pretightning force of porcelain 1, and then change the rigidity of total.
In optimum embodiment, two groups of micro-adjusting mechanisms and piezoelectric ceramic actuator are set to same straight line, in other embodiments,
Can micro-adjusting mechanism be moved forward or be retreated relative to the position of frame.
It should be noted that adjust rigidity using differential head in the present embodiment, due to spring rate K be it is known, make
With differential head can accurate adjustment spring reduction length X, the occurrence of pretightning force F, thus leads to known to Hooke's law F=K*X
Cross the system dynamics model established, it is known that the knots modification of the specific rigidity of structure.It is this to adjust the mode of rigidity not at remote knife end
It is only able to ascend stiffness tuning efficiency, and the theoretical value of stiffness change amount can be obtained, has correspondinglyd increase the standard of stiffness equivalent
Exactness.
A kind of sharp knife structure adjusting rigidity at remote knife end provided in this embodiment, driver 1 is driven, to pass through
The elongation of 2 end of lever amplifying mechanism output setting by the release of the first flexible hinge 3, then transmits output and connects to cutter
Connect block 8, thus to the back-and-forth motion of cutter (cutter is arranged perpendicular to the length direction of frame, i.e., cutter along frame width
Direction is mobile) it is adjusted, because cutter link block is set to the center line of frame 10, overall structure applies the asymmetry of stress
Add insensitive, 8 end of cutter link block is unique displacement delivery outlet, can eliminate existing nearly knife end to a certain extent and be applied
Add the difference of rigidity.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of sharp knife structure for adjusting rigidity at remote knife end characterized by comprising
Frame；
Lever amplifying mechanism is set in frame, and lever amplifying mechanism includes multiple groups, in one end of each group of lever amplifying mechanism
Side contacts or connects with the end of driver；
For connecting the cutter link block of cutter, cutter link block passes through the other end of the first flexible hinge and lever amplifying mechanism
Connection is equipped with flexible guiding mechanism between the two sides and frame of cutter link block；
Micro-adjusting mechanism, pass through frame be arranged, and micro-adjusting mechanism pass through frame end contacted with lever amplifying mechanism with realize from
Remote knife end adjusts the rigidity of sharp knife structure.
2. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the lever is put
Great institutions are L-type, and lever amplifying mechanism includes two groups, and two groups of lever amplifying mechanisms are symmetrically set in the groove, and two groups of thick sticks
The end of bar enlarger is connect each by first flexible hinge with the cutter link block.
3. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the lever is put
Second flexible hinge is set between great institutions and the frame.
4. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the lever is put
Drive block is set between great institutions and the driver, third flexible hinge is equipped between drive block and lever amplifying mechanism side
Chain.
5. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the frame exists
Grating frame is arranged in the side of the cutter link block, and grating reading head is arranged in grating frame, and grating is arranged in the cutter link block
Ruler, grating scale and grating reading head are setting up and down for determining the displacement of cutter link block.
6. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the frame is set
Adjustment hole is set, the micro-adjusting mechanism is arranged across adjustment hole.
7. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 6, which is characterized in that the freqency fine adjustment machine
Structure includes two groups, and two groups of micro-adjusting mechanisms are symmetrically set in the frame, and each micro-adjusting mechanism includes differential head, elastic component and fixation
Cap, elastic component and locking cap are set in adjustment hole, and one end of elastic component offsets with the lever amplifying mechanism side, differential
Cephalic par offsets with locking cap, and differential head is threadedly coupled with adjustment hole.
8. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the cutter connects
It connects block and protrudes from the frame setting.
9. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the driver
For piezoelectric ceramics bidirectional drive.
10. a kind of sharp knife structure for adjusting rigidity at remote knife end according to claim 1, which is characterized in that the fine tuning
The setting direction of mechanism is identical as the setting direction of the driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439399.6A CN110153768B (en) | 2019-05-24 | 2019-05-24 | Fast sword structure of adjusting rigidity at distal end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439399.6A CN110153768B (en) | 2019-05-24 | 2019-05-24 | Fast sword structure of adjusting rigidity at distal end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110153768A true CN110153768A (en) | 2019-08-23 |
| CN110153768B CN110153768B (en) | 2020-04-24 |
Family
ID=67632449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910439399.6A Active CN110153768B (en) | 2019-05-24 | 2019-05-24 | Fast sword structure of adjusting rigidity at distal end |
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| Country | Link |
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| CN (1) | CN110153768B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388370A (en) * | 2020-11-13 | 2021-02-23 | 山东大学日照智能制造研究院 | Piezoelectric ceramic driven large-stroke constant-force fast knife servo device |
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| CN102528522A (en) * | 2012-03-05 | 2012-07-04 | 广东工业大学 | Fast tool servo device with adjustable rigidity |
| CN102794664A (en) * | 2012-07-17 | 2012-11-28 | 广东工业大学 | Bridge-type flexible hinge based high-frequency ultra-precision machining lathe saddle driving platform |
| CN102862084A (en) * | 2012-10-11 | 2013-01-09 | 厦门大学 | Cutter servo micro-feeding mechanism |
| CN106975961A (en) * | 2017-05-19 | 2017-07-25 | 广东工业大学 | A kind of long stroke fast tool servo |
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2019
- 2019-05-24 CN CN201910439399.6A patent/CN110153768B/en active Active
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|---|---|---|---|---|
| US20060082917A1 (en) * | 2004-10-18 | 2006-04-20 | Sae Magnetics (H.K.) Ltd. | Head gimbal assembly with flying height controller, disk drive unit using the same, and flying height adjusting method and system thereof |
| CN102380788A (en) * | 2011-11-08 | 2012-03-21 | 浙江师范大学 | Double-parallel-flexible-hinge-based tool rest driving platform of super-precision machining lathe |
| CN102528522A (en) * | 2012-03-05 | 2012-07-04 | 广东工业大学 | Fast tool servo device with adjustable rigidity |
| CN102794664A (en) * | 2012-07-17 | 2012-11-28 | 广东工业大学 | Bridge-type flexible hinge based high-frequency ultra-precision machining lathe saddle driving platform |
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| CN112388370A (en) * | 2020-11-13 | 2021-02-23 | 山东大学日照智能制造研究院 | Piezoelectric ceramic driven large-stroke constant-force fast knife servo device |
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| CN110153768B (en) | 2020-04-24 |
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