CN108356298B - A kind of ultrasound is slotting to cut process tool - Google Patents
A kind of ultrasound is slotting to cut process tool Download PDFInfo
- Publication number
- CN108356298B CN108356298B CN201810157271.6A CN201810157271A CN108356298B CN 108356298 B CN108356298 B CN 108356298B CN 201810157271 A CN201810157271 A CN 201810157271A CN 108356298 B CN108356298 B CN 108356298B
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- process tool
- ultrasound
- cutter body
- positioning surface
- wall
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000005520 cutting process Methods 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 18
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000644 propagated effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 11
- 230000007423 decrease Effects 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 38
- 230000000694 effects Effects 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000784 Nomex Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D13/00—Tools or tool holders specially designed for planing or slotting machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
- B23B2270/10—Use of ultrasound
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
It is inserted the invention discloses a kind of ultrasound and cuts process tool, including cutter body;One end of cutter body has positioning surface, positioning surface is equipped with the thread segment being connected with ultrasonic amplitude transformer, the other end of cutter body has groove, groove includes cone tank bottom, cylindrical hole and taper type hole, the tubaeform cutting edge of outer wall composition of taper type hole and the cutter body far from described positioning surface one end, cutter body outer wall between positioning surface and cone tank bottom is equipped with spanner slot, at least one is equipped with from the crumb mouth that cutter body outer wall is pierced by close to one end of the cylindrical hole at cone tank bottom, the hole section inner wall in the close taper type hole of cylindrical hole is equipped at least one skewed slot being pierced by from cutter body outer wall.The cutting force for cutting processing is inserted present invention decreases honeycomb core, honeycomb core cell is effectively inhibited to be crushed deformation damage, guarantees processing quality and machining accuracy.
Description
Technical field
The present invention relates to a kind of machining tools, and in particular to a kind of ultrasound is slotting to cut process tool.
Background technique
NOMEX honeycomb core composite material is because of density small light, high specific strength and specific stiffness, strong shock resistance, good
Self-extinguishment the features such as and be widely used in the numerous areas such as aerospace, bullet train.Honeycomb core component is constituted, is needed pair
Honeycomb core is machined.In honeycomb core Machining Complicated Profile, it is related to the processing of a large amount of small curvature radius arcs and hole.At present
Mainly there are 2 kinds of method processing comb core materials, one is using milling cutter high-speed milling method to process on high-speed machine tool, using height
When the small curvature honeycomb core structures feature of fast Milling Process, since integral honeycomb honeycomb cell structure is destroyed, half cell honeycomb intensity is non-
It is often low, often occur honeycomb wall conquassation defect under the action of milling tool power, processing quality is poor.Second is using ultrasonic wave
Lathe is with straight sword sharp knife or cutting disc machining honeycomb core, and ultrasonic wave machining honeycomb core cutting force is small, and surface quality is very
Height, but for the processing of small curvature radius arc then can only use straight sword sharp knife, and straight sword sharp knife during excision material by
Small in the radius of gyration, knife face two sides are serious to the pushing of machined material, also result in conquassation and other issues.Therefore, to bee
The processing of the small curvature circular arc feature of nest core is currently a problem of Field of Aviation Manufacturing.
Inserting and cutting processing is using hollow Tubular tool insertion machined material, and excision center cylinder material completes center
The processing in hole.Have the technical report of the slotting cutter processing honeycomb core using revolution at a high speed, in process, hollow knife at present
It is fed while tool rotates about the axis thereof perpendicular to honeycomb core cell axis, to carry out the removal of comb core material.But add
The effect is unsatisfactory for work, existing main problem are as follows: 1. comb core material is made of materials such as aramid fibers more difficult to process, is added
Tool wear is serious during work.In order to guarantee processing quality, cutter is needed to frequently replace, and such cost of charp tool is higher, increases
The manufacturing cost of honeycomb core material is added;2. existing hollow honeycomb core, which inserts cutter, does not have chip removal function, honeycomb core chip is very
It is deposited in cutter inner hole fastly, needs frequent shutdown to clear up chip, processing efficiency is extremely low, poor availability;3. honeycomb core is inserted and cuts material
Removal is still high-speed milling principle, and tubular cutter surfaces externally and internally and the friction of cutting surface and cutting are serious, and cutting force is big,
The defects of being easy to cause honeycomb core turned-down edge, the circular arc feature definition of processing and of poor quality.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of ultrasounds for the small curvature circular arc feature machining of honeycomb core to insert
Cut process tool.The principle of the present invention is, ultrasonic cutting processing is cut processing and combined with slotting, can be very big using ultrasonic vibration
The advantage for reducing frictional force and cutting force applies ultrasonic vibration on inserting cutting tool, realizes the small curvature circular arc feature of honeycomb core
High-precision is processed.In order to realize above-mentioned principle, the difficult point for needing to solve includes: 1. to consider cutter material and structure, integrated use
The transfer principle and rule of ultrasonic wave invent a kind of slotting cutter that can transmit ultrasonic vibration;2. ultrasonic vibration is passed through cutter hub
Nose-cut-ting edge is cast to, guarantees that the amplitude that cutting edge goes out is maximum;3. guaranteeing super to effectively reduce the decaying of the interface of ultrasonic vibration
Acoustic vibration effect, cutter must be reliably connected with knife handle;4. solving the problems, such as to insert the chip removal for cutting processing.The technology hand that the present invention uses
Section is as follows:
A kind of ultrasound is slotting to cut process tool, including cutter body;
One end of the cutter body has positioning surface (realize that cutter is coaxial with ultrasonic amplitude transformer), on the positioning surface
Equipped with the thread segment being connected with ultrasonic amplitude transformer, the other end of the cutter body has groove, and the groove includes cone tank
Bottom, cylindrical hole and positioned at the groove notch taper type hole (with reduce it is described ultrasound insert cut process tool outer wall and honeycomb
The friction of core material), arc transition hole is equipped between the cone tank bottom and the cylindrical hole (to avoid under ultrasonication
Stress is concentrated), the small end in the taper type hole is connected to the cylindrical hole;
The tubaeform cutting edge of outer wall composition of the taper type hole and the cutter body far from described positioning surface one end, institute
Outer wall of the cutter body far from described positioning surface one end is stated in taper type, the cutter body is far from the outer of described positioning surface one end
The small end of wall is between the cylindrical hole both ends;
The cutter body outer wall between the positioning surface and the cone tank bottom is equipped with spanner slot, close to institute
State the cylindrical hole at cone tank bottom one end be equipped at least one from the crumb mouth that the cutter body outer wall is pierced by, it is described
The hole section inner wall close to the taper type hole of cylindrical hole is equipped at least one skewed slot being pierced by from the cutter body outer wall.
The notch diameter at the cone tank bottom is less than the diameter of the cylindrical hole.
After the thread segment and ultrasonic amplitude transformer installation are fixed, the ultrasound inserts that cut process tool same with ultrasonic amplitude transformer
Axis.Axial high-frequency vibration is passed to ultrasonic insert and cuts process tool by the ultrasonic amplitude transformer.
The inner wall of the cylindrical hole is equipped with the chip space to the crumb mouth chip removal, and the chip space and the ultrasound are inserted
The axis for cutting process tool is parallel or insert around the ultrasound and cut the axis of process tool from the taper type hole to the crumb mouth
Spiral.
According to basic, normal, high three kinds of different hardness of comb core material in practical application, the chip space selects slotless knot
Structure, flat construction and helical structure.
The positioning surface is inserted in the ultrasound for sound wave to the length between the big end in the taper type hole and cuts process tool
Material propagates 0.25~0.5 times of wavelength, too short, is not able to satisfy ultrasonic vibration requirement, too long then it cannot be guaranteed that the ultrasound is inserted
Cut process tool axial rigidity.
The cutting edge angle of wedge of the tubaeform cutting edge is 2~10 °.
The skewed slot is tilted to the positioning surface direction, and the number of the skewed slot is three or three or more, the skewed slot
Parallel to each other and insert along the ultrasound and cut process tool axis and equidistantly arrange, the spacing between the skewed slot is less than sound wave in institute
It states ultrasonic insert and cuts the wavelength propagated in process tool material, the effect of the skewed slot is vertical by what is be transmitted to from ultrasonic amplitude transformer
Vibration is transformed into torsional oscillation and the form of longitudinal vibration superposition passes to tubaeform cutting edge, is conducive to going for material when rotary insertion cuts processing
It removes.
The slotting circumferential direction for cutting process tool of ultrasound is evenly equipped with two or more crumb mouths, the crumb mouth
For long side be parallel to it is described ultrasound insert cut process tool axis rectangular opening or long axis it is parallel or inclined in it is described ultrasound insert cut plus
The oval port of work tool axis, or convenient for other shapes of chip discharge.
The spanner slot is rectangle spanner slot and plane where it is parallel to the ultrasound and inserts the axis for cutting process tool.
It is high-speed steel or hard alloy that the ultrasound, which inserts and cuts the material of process tool, to transmit high frequency axial vibration.
The positioning surface is the conical surface or cascaded surface.
Compared with existing high-speed milling is inserted and cuts processing technology, the beneficial effects of the present invention are:
1. the introducing of ultrasonic vibration reduces honeycomb core and inserts the cutting force for cutting processing, honeycomb core cell is effectively inhibited to be crushed
Deformation damage guarantees processing quality and machining accuracy;
2. ultrasonic vibration can effectively reduce, ultrasound is slotting to cut process tool abrasion, reduces processing cost;
3. ultrasonic vibration has good antifriction function, it is ensured that ultrasound is inserted to cut process tool and complete the process and promoted
The chip of journey central part skids off ultrasonic insert automatically and cuts process tool, will not be deposited in inside grooves, does not need to shut down cleaning cutting, guarantor
Card processing continuity, is greatly improved processing efficiency;Meanwhile the honeycomb core chip being discharged not in time in groove is gone back in process
It can be discharged by chip space through crumb mouth, further solve the problems, such as that honeycomb core is inserted and cut processing chip removal difficulty.
The present invention can be widely popularized in fields such as machining tools based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that ultrasound inserts the structural schematic diagram for cutting process tool in the embodiment of the present invention 1.
Fig. 2 is that ultrasound inserts the cross-sectional view for cutting process tool in the embodiment of the present invention 1.
Fig. 3 is that ultrasound inserts the cross-sectional view for cutting process tool in the embodiment of the present invention 2.
Fig. 4 is that ultrasound inserts the cross-sectional view for cutting process tool in the embodiment of the present invention 3.
Fig. 5 is that ultrasound inserts the cross-sectional view for cutting process tool in the embodiment of the present invention 4.
Fig. 6 is the circular arc feature after common slotting cutter processing honeycomb core.
Fig. 7 is the circular arc feature that ultrasound inserts after cutting process tool processing honeycomb core in a specific embodiment of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
As depicted in figs. 1 and 2, a kind of ultrasound, which is inserted, cuts process tool, including cutter body;
One end of the cutter body has positioning surface 1, and the positioning surface 1 is equipped with the screw thread being connected with ultrasonic amplitude transformer
Section 2, the other end of the cutter body have groove, and the groove includes cone tank bottom 3, cylindrical hole 4 and is located at described recessed
The taper type hole 5 of slot notch is equipped with arc transition hole 6, the taper type between the cone tank bottom 3 and the cylindrical hole 4
The small end in hole 5 is connected to the cylindrical hole 4;
The taper type hole 5 and the cutter body constitute tubaeform cutting far from the outer wall 11 of described positioning surface one end
Sword, outer wall 11 of the cutter body far from described positioning surface one end is in taper type, and the cutter body is far from the positioning surface
The small end of the outer wall 11 of one end is between the cylindrical hole both ends;
The cutter body outer wall between the positioning surface 1 and the cone tank bottom 3 is equipped with spanner slot 7, leans on
One end of the cylindrical hole 4 at the nearly cone tank bottom 3 is equipped at least one bits out being pierced by from the cutter body outer wall
Mouth 8, the hole section inner wall close to the taper type hole 5 of the cylindrical hole 4 are equipped at least one from the cutter body outer wall
The skewed slot 9 being pierced by.
The inner wall of the cylindrical hole 4 is equipped with the chip space 10 to 8 chip removal of crumb mouth, and the chip space 10 is around described
Ultrasound, which is inserted, cuts the axis of process tool from the taper type hole 5 to 8 spiral of crumb mouth.
The positioning surface 1 is inserted in the ultrasound for sound wave to the length between the big end in the taper type hole 5 and cuts processing knife
Has 0.25~0.5 times that material propagates wavelength.
The cutting edge angle of wedge for the tubaeform cutting edge that the taper type hole 5 is constituted is 2~10 °.
The skewed slot 9 is tilted to 1 direction of positioning surface, and the number of the skewed slot 9 is three, and the skewed slot 9 is mutually equal
It row and is inserted along the ultrasound and cuts process tool axis and equidistantly arrange, the spacing between the skewed slot 9 is less than sound wave described super
Sound is inserted and cuts the wavelength propagated in process tool material.
The slotting circumferential direction for cutting process tool of ultrasound is uniformly distributed there are two the crumb mouth 8, and the crumb mouth 8 is that long side is parallel
The rectangular opening for cutting process tool axis is inserted in the ultrasound.
The spanner slot 7 is rectangle spanner slot and plane where it is parallel to the ultrasound and inserts the axis for cutting process tool
Line.
It is high-speed steel or hard alloy that the ultrasound, which inserts and cuts the material of process tool,.
The positioning surface 1 is the conical surface.
The present embodiment is used for high rigidity honeycomb core, and the hand of spiral of the chip space 10 and the ultrasound insert and cut process tool
Gyratory directions are opposite.Since honeycomb core hardness is higher, machining deformation is smaller, each time the chip core gyratory directions after feed and institute
State ultrasound insert cut process tool gyratory directions on the contrary, along the chip space 10 rise, feed next time generate chip core by its
It is discharged at top to the crumb mouth 8, and so on, realizes automatic chip-removal.
Fig. 6 and Fig. 7 is respectively commonly and ultrasound inserts the circle after cutting the slotting cutter processing honeycomb core of process tool in the present invention
Arc feature can compare and find out that the present invention is obviously improved honeycomb core circular arc feature machining quality.
Embodiment 2
As shown in figure 3, a kind of ultrasound inserts and cuts process tool, the area for cutting process tool is inserted with ultrasound described in embodiment 1
Other feature is that the positioning surface 1 is cascaded surface.
Embodiment 3
As shown in figure 4, a kind of ultrasound inserts and cuts process tool, the area for cutting process tool is inserted with ultrasound described in embodiment 1
Other feature, which is that the ultrasound is slotting, cuts process tool without chip space.
The present embodiment is used for soft honeycomb core, and since the hardness of soft honeycomb core is lower, machining deformation is larger, described
Friction is small between groove inner wall and honeycomb core chip, in addition ultrasonic vibration effect and ultrasonic anti-attrition effect, cutting at one time are complete
It can be detached from from the groove at rear chip core, to realize automatic chip-removal.
Embodiment 4
As shown in figure 5, a kind of ultrasound inserts and cuts process tool, the area for cutting process tool is inserted with ultrasound described in embodiment 1
Other feature is the chip space 10, and slotting to cut the axis of process tool parallel with the ultrasound.
The present embodiment is used for middle hardness honeycomb core, and the chip space 10 and the slotting axis for cutting process tool of the ultrasound are flat
It goes, in process, the chip in the chip space 10 has fraction separation under turning effort, and along the chip space 10
It is discharged to the crumb mouth 8, and remaining chip not chopped is since diameter is smaller than the diameter of groove, in ultrasonic vibration and ultrasound
It can be slowly detached from from the groove under anti-attrition effect, to realize automatic chip-removal.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of ultrasound, which is inserted, cuts process tool, which is characterized in that including cutter body;
One end of the cutter body has positioning surface, and the positioning surface is equipped with the thread segment being connected with ultrasonic amplitude transformer, institute
The other end for stating cutter body has groove, and the groove includes cone tank bottom, cylindrical hole and positioned at the groove notch
Taper type hole is equipped with arc transition hole, the small end in the taper type hole and institute between the cone tank bottom and the cylindrical hole
State cylindrical hole connection;
The tubaeform cutting edge of outer wall composition of the taper type hole and the cutter body far from described positioning surface one end, the knife
Having outer wall of the main body far from described positioning surface one end is in taper type, outer wall of the cutter body far from described positioning surface one end
Small end is between the cylindrical hole both ends;
The cutter body outer wall between the positioning surface and the cone tank bottom is equipped with spanner slot, close to the cone
One end of the cylindrical hole of shape slot bottom is equipped at least one from the crumb mouth that the cutter body outer wall is pierced by, the cylinder
The hole section inner wall close to the taper type hole in shape hole is equipped at least one skewed slot being pierced by from the cutter body outer wall.
2. it is according to claim 1 ultrasound insert cut process tool, it is characterised in that: the inner wall of the cylindrical hole be equipped with to
The chip space of the crumb mouth chip removal, the chip space insert that cut the axis of process tool parallel or around the ultrasound with the ultrasound
It inserts and cuts the axis of process tool from the taper type hole to the crumb mouth spiral.
3. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the positioning surface to the taper type hole
Big end between length to be sound wave insert in the ultrasound cuts process tool material and propagate 0.25~0.5 times of wavelength.
4. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the cutting edge of the tubaeform cutting edge
The angle of wedge is 2~10 °.
5. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the skewed slot is to the positioning surface direction
Inclination, the number of the skewed slot are three or three or more, and the skewed slot is parallel to each other and cuts process tool along ultrasonic insert
Axis equidistantly arranges, and the spacing between the skewed slot is less than sound wave and cuts the wave propagated in process tool material in ultrasonic insert
It is long.
6. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the ultrasound inserts the week for cutting process tool
To two or more crumb mouths are evenly equipped with, the crumb mouth is parallel to ultrasonic insert for long side and cuts process tool
The rectangular opening or long axis of axis are parallel or inclined to insert the oval port for cutting process tool axis in the ultrasound.
7. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the spanner slot is rectangle spanner slot
And plane where it is parallel to the ultrasound and inserts the axis for cutting process tool.
8. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the ultrasound inserts the material for cutting process tool
Material is high-speed steel or hard alloy.
9. ultrasound according to claim 1, which is inserted, cuts process tool, it is characterised in that: the positioning surface is the conical surface or ladder
Face.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810157271.6A CN108356298B (en) | 2018-02-24 | 2018-02-24 | A kind of ultrasound is slotting to cut process tool |
PCT/CN2019/074603 WO2019161743A1 (en) | 2018-02-24 | 2019-02-02 | Ultrasonic cutting holder for honeycomb core |
EP19756842.1A EP3756808B1 (en) | 2018-02-24 | 2019-02-02 | Ultrasonic cutting holder for honeycomb core |
US16/968,122 US11220018B2 (en) | 2018-02-24 | 2019-02-02 | Ultrasonic cutting holder for honeycomb core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810157271.6A CN108356298B (en) | 2018-02-24 | 2018-02-24 | A kind of ultrasound is slotting to cut process tool |
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CN108356298A CN108356298A (en) | 2018-08-03 |
CN108356298B true CN108356298B (en) | 2019-04-12 |
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CN111168156B (en) * | 2020-01-17 | 2021-03-09 | 深圳精匠云创科技有限公司 | Cutting tool |
CN115780847A (en) * | 2022-11-11 | 2023-03-14 | 大连理工大学 | Cutter utensil is inserted to interchangeable tool bit formula honeycomb core supersound |
CN115647412A (en) * | 2022-11-11 | 2023-01-31 | 大连理工大学 | Combined honeycomb core ultrasonic cutting tool |
CN116373029B (en) * | 2023-06-07 | 2023-10-03 | 成都飞机工业(集团)有限责任公司 | Automatic chip removal ultrasonic jack device |
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US8303744B2 (en) * | 2011-02-10 | 2012-11-06 | Bradford Company | Method of making multilayer product having honeycomb core |
US8696843B1 (en) * | 2012-09-06 | 2014-04-15 | The Boeing Company | Repair of acoustically treated structures |
CN103406714B (en) * | 2013-08-26 | 2016-12-07 | 赵显华 | A kind of groove side Ultrasonic Machining and device |
CN104400025A (en) * | 2014-10-11 | 2015-03-11 | 陕西启源科技发展有限责任公司 | Jacking knife |
CN105642925B (en) * | 2016-04-07 | 2018-07-13 | 大连理工大学 | A kind of ultrasound cutter |
CN106985015B (en) * | 2017-04-13 | 2020-02-28 | 南京航空航天大学 | Integral composite ultrasonic knife handle device |
CN107378009B (en) * | 2017-08-01 | 2019-04-09 | 大连理工大学 | A kind of micro- serrated knife tool of multi-ladder multiple-cutting-edge gradual change for carbon fibre composite drilling |
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