CN113477997B - Ultrasonic arc blade saw blade milling cutter for machining wave-absorbing honeycomb - Google Patents
Ultrasonic arc blade saw blade milling cutter for machining wave-absorbing honeycomb Download PDFInfo
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- CN113477997B CN113477997B CN202110852787.4A CN202110852787A CN113477997B CN 113477997 B CN113477997 B CN 113477997B CN 202110852787 A CN202110852787 A CN 202110852787A CN 113477997 B CN113477997 B CN 113477997B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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Abstract
The invention discloses an ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs, which comprises a fastening screw, a metal washer, a transition boss and a cutter body, wherein a chip groove is formed on the cutter body along the circumferential edge, the cutter body is connected with the transition boss, the metal washer is connected above the transition boss, and the fastening screw longitudinally penetrates through the metal washer and the transition boss in sequence and then is fixedly connected with the cutter body; the axes of the fastening screw, the metal washer, the transition boss, the cutter body and the chip groove are all located on the same straight line. The invention reduces the cutting force and the cutting temperature between the cutter and the honeycomb in the processing process so as to prolong the service life of the cutter, ensure that the cutter can carry out long-time high-frequency vibration processing and improve the processing efficiency of milling the surface of the honeycomb.
Description
Technical Field
The invention belongs to the technical field of manufacturing of wave-absorbing honeycomb machining tools, and particularly relates to an arc-edge saw blade milling cutter for machining wave-absorbing honeycombs.
Background
The wave-absorbing honeycomb material is a novel honeycomb composite material developed based on aramid fiber honeycombs, and is widely applied to military, aerospace and other fields with special requirements due to the excellent characteristics of low density, light weight, heat resistance, corrosion resistance and strong impact resistance of the wave-absorbing honeycomb. Compared with the traditional Nomex honeycomb, the wave-absorbing honeycomb has the advantages that as the surface of the wave-absorbing honeycomb is adhered with the layer of resin impregnated with the acetylene black wave-absorbing substance, the transverse hardness and rigidity of the honeycomb wall of the wave-absorbing honeycomb are greatly improved, so that in the process of milling a plane by adopting a traditional honeycomb processing cutter, the processing temperature is too high, the cutter is abraded more severely, and the service life and the cutting efficiency of the cutter are seriously influenced. Meanwhile, the problems of fiber extraction of the honeycomb sandwich layer, collapse and breakage of the honeycomb wall and the like can be caused due to overlarge milling force.
The existing ultrasonic-assisted machining wave-absorbing honeycomb changes the machining mode that the traditional milling cutter breaks up cutting scraps. The cutting disc is usually subjected to periodic high-frequency vibration, so that the cutter is in intermittent contact with a honeycomb material in the cutting process, the contact time of the cutter and the honeycomb in the machining process is shortened, the cutting force of the traditional cutting tool is effectively improved, and the generation of heat in the cutting process is greatly reduced. However, after the cutter is subjected to ultrasonic vibration, the cutter has a high toughness requirement, and the traditional ultrasonic disc cutter has the phenomena of edge breakage, notch of the cutter, easy locking of a cutting cutter head and the like in the ultrasonic vibration machining process. Therefore, on the basis of the existing ultrasonic cutting disk, the cutting force and the cutting temperature between the cutter and the honeycomb in the machining process need to be further reduced so as to prolong the service life of the cutter, enable the cutter to carry out high-frequency vibration machining for a long time and improve the machining efficiency of milling the surface of the honeycomb.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs, which is mainly used for processing aviation wave-absorbing honeycomb materials and is formed by precisely assembling a high-speed steel cutter body, a hard alloy fastening screw and a metal washer. The high-speed steel cutter body is an R-shaped saw blade milling cutter taking the thickness of the cutter head as the radius, the shapes of the teeth are distributed in an annular array, the honeycomb material is cut mainly by the arc blades of the cutter teeth in the cutting process, redundant material on the surface of the honeycomb can be cut off, and high machining precision can be kept. The ultrasonic R-shaped saw blade milling cutter has the advantages of low temperature, good stability, strong cutter tooth toughness and high wear resistance in the process of high-speed cutting, and is not easy to cause fatigue fracture and bending of the cutter tooth. After the ultrasonic wave is applied, the contact area with the material is greatly reduced, and the service life of the cutter can be greatly prolonged.
In order to achieve the purpose, the invention provides the following technical scheme:
an ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs comprises a fastening screw, a metal gasket, a transition boss and a cutter body, wherein a chip groove is formed in the cutter body along the circumferential edge, the cutter body is connected with the transition boss, the metal gasket is connected above the transition boss, and the fastening screw longitudinally penetrates through the metal gasket and the transition boss in sequence and then is fixedly connected with the cutter body; the axes of the fastening screw, the metal washer, the transition boss, the cutter body and the chip groove are all located on the same straight line.
Preferably, an inner groove is formed at the concave bottom of the transition boss, and the axes of the inner groove and the transition boss are located on the same straight line.
Preferably, the cutting edge part of the cutter body is a sawtooth with an R edge shape formed by a fan-shaped annular arc surface front cutter surface and a semicircular surface rear cutter surface, the front angle of the cutting edge is 6-12 degrees, and the rear angle of the cutting edge is 12-22 degrees.
Preferably, the cutter tooth profile of the cutter body is a broken line type.
Preferably, the rear cutter face of the cutter body forms a wedge angle of 2-5 degrees with the horizontal direction.
Preferably, the transition boss is provided with a large-diameter end and a small-diameter end, the large-diameter end is connected with the upper tool face of the cutter body, the small-diameter end is connected with the metal gasket, and the diameter of the outer ring of the metal gasket is smaller than that of the small-diameter end of the transition boss.
Preferably, the large-diameter end of the transition boss and the upper tool face of the cutter body are in arc transition.
Preferably, the radius of the chip groove is 1-2mm, and the chip groove axially penetrates through the cutter body.
Preferably, the cutter body is processed by ultrasonic vibration, the cutter body has periodic vibration along the direction of the main shaft, and the resonance frequency is matched with the main vibration frequency of the ultrasonic processing acoustic system.
Preferably, the surface of the cutter body is treated by CVD chemical vapor deposition or PVD physical vapor deposition.
In conclusion, the arc-edge saw blade milling cutter is mainly used for machining aviation wave-absorbing honeycomb materials and is formed by precisely assembling fastening screws, a hard alloy washer and an ultrasonic R-shaped milling cutter, a cutter head of the ultrasonic R-shaped milling cutter is an annular array of R-shaped saw teeth, a cutter tooth back is arc-shaped, cutter teeth forming an angle of 12-22 degrees with the horizontal direction can cut parts with high precision requirements, the cutter teeth of the ultrasonic R-shaped milling cutter are mainly used for cutting, the machined surface does not have any burrs, and the cutter has excellent stability and good cutting performance in the machining process. In addition, due to the application of the ultrasonic action, the contact area between the surface of the cutter and a material is greatly reduced, the friction force is greatly reduced, the temperature during cutter processing is obviously reduced, and the service life of the wedge-shaped cutting edge can be prolonged on the basis of the wedge-shaped cutting edge.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly introduced below.
Fig. 1 is a schematic view of an assembly structure of a trapezoid-like transition boss and a disc-shaped cutter body with R-shaped zigzag lines in embodiment 1 of the present invention.
Fig. 2 is an assembly structure schematic diagram of an ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs in embodiment 1 of the invention.
Fig. 3 is a side view of an ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs in embodiment 1 of the invention.
Fig. 4 is a top view of an ultrasonic R-tooth honeycomb milling cutter.
Fig. 5 is a schematic view of an ultrasonic vibration machining principle of the ultrasonic R-tooth honeycomb machining milling cutter.
Fig. 6 is a schematic processing diagram of an ultrasonic R-tooth honeycomb processing milling cutter.
Fig. 7 is a schematic perspective view of the ultrasonic R-tooth honeycomb milling cutter.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs of the present embodiment includes a fastening screw 1, a metal washer 2, a trapezoid-like transition boss 3, and a disc-shaped cutter body 4 with R-shaped zigzag teeth, wherein the cutter body 4 forms a large-capacity chip pocket 5 along a circumferential edge, the trapezoid-like transition boss 3 is placed above the cutter body 4, the metal washer 2 is placed above the trapezoid-like transition boss 3, and the fastening screw 1 longitudinally penetrates through the metal washer 2 and the trapezoid-like transition boss 3 in sequence and then is fixedly connected with the cutter body 4. The concave bottom of class trapezoidal transition boss 3 forms class trapezoidal inner groovy 6, and fastening screw 1's the other end is connected with supersound acoustics handle of a knife, separates through metal packing ring 2 between class trapezoidal transition boss 3 and the supersound acoustics handle of a knife, and the three forms through closely assembling. The axes of the fastening screw 1, the metal washer 2, the trapezoid-like transition boss 3, the disc-shaped cutter body 4 with the R-shaped zigzag line sawteeth, the large-capacity chip pocket 5 and the trapezoid-like inner groove 6 are all positioned on the same straight line. The milling cutter body is made of high-speed steel. The cutter body 4 of the round disc-shaped sawtooth with R-shaped broken line, its cutting edge is the sawtooth of R-shaped type of blade that the front knife face M of the sector annular circular arc face and rear knife face N of the semicircular face form, the anterior angle alpha of the cutting knife tooth is 6-12 degrees, the back angle beta of the said cutting tooth is 12-22 degrees.
A disc-shaped cutter body 4 with R-shaped zigzag teeth has zigzag teeth L in the shape of the top view.
The rear cutter face of the disc-shaped cutter body 4 with the R-shaped broken line sawteeth forms a wedge angle theta of 2 degrees to 5 degrees with the horizontal direction. The big diameter end of class trapezoidal transition boss 3 links to each other and adopts the transition of small circle arc with the last knife face of the cutter body 4 of discoid area R type broken line sawtooth, and the little diameter end of class trapezoidal transition boss 3 links to each other with metal packing ring 2, and the diameter of metal packing ring 2 is less than the minor diameter end diameter of class trapezoidal transition boss 3.
The radius of the chip groove 6 is 1mm-2mm, and the chip groove 6 with large capacity penetrates through the disc-shaped cutter body 4 with the R-shaped zigzag lines in the axial direction.
A supersound R type sawtooth milling cutter for absorbing processing of ripples honeycomb, in the cutter carries out the ultrasonic vibration course of working, the cutter has the periodic vibration along cutter main shaft direction, the resonant frequency of supersound R type sawtooth milling cutter needs and the main frequency of vibration of ultrasonic machining acoustic system phase-match, because the cutter is similar to the deflection roof beam structure, the vibration range of so cutter edge all is greater than the vibration range of the arbitrary department in the cutter, the sword tooth is when cutting, only has a little part of sword tooth arc sword to participate in the cutting to this reduces the cutter and by the friction between the cutting material, improves the cutter life-span.
The ultrasonic R-shaped sawtooth milling cutter for processing the wave-absorbing honeycomb has a cutter body which is treated by CVD chemical vapor deposition or PVD physical vapor deposition.
As shown in fig. 5, when ultrasonic vibration is applied to the ultrasonic R-type serrated milling cutter, since the cross section of the ultrasonic R-type serrated milling cutter in the diameter direction is similar to a deflection beam structure, bending vibration occurs in the cutter when ultrasonic vibration is applied, and the vibration amplitude of the edge of the cutter is larger than that of the inside of the cutter. When the ultrasonic R-tooth honeycomb processing milling cutter performs high-degree rotary cutting, when the cutter teeth of the ultrasonic R-tooth honeycomb processing milling cutter vibrate to the maximum amplitude, only a small part (such as a part A in fig. 5) of the cutter teeth participates in cutting of honeycomb materials; when the vibration reaches the lowest position, only a small part (such as a part B in figure 5) of the cutter teeth under the cutter teeth participates in the cutting of the honeycombs, so that the contact area between the cutter and the honeycomb material in the cutting process is reduced, the aim of reducing the friction between the cutter and the honeycombs is fulfilled, meanwhile, the friction force between the honeycomb material and the cutter is reduced, the cutting heat generated in the cutting process can be reduced, and the service life of the cutter is prolonged.
As shown in fig. 6-7, in the preparation stage of machining, the ultrasonic R-type serrated milling cutter needs to be placed in the XOY plane for tool setting, so that the plane of the cutter is perpendicular to the axis of the honeycomb cell wall, and the appropriate cutting depth and cutting width are selected. When the surface of the wave-absorbing honeycomb is milled, the ultrasonic R-shaped sawtooth milling cutter for processing the wave-absorbing honeycomb generates high-frequency vibration in the Z direction, the resonance frequency of the ultrasonic R-shaped sawtooth milling cutter needs to be consistent with the main vibration frequency of an ultrasonic processing system, and the proper spindle rotating speed is selected according to the cutting depth and the cutting width selected in the processing preparation stage so that the ultrasonic R-shaped sawtooth milling cutter can carry out forward milling processing.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. An ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs is characterized by comprising a fastening screw, a metal gasket, a transition boss and a cutter body, wherein a chip groove is formed in the cutter body along the circumferential edge, the cutter body is connected with the transition boss, the metal gasket is connected above the transition boss, and the fastening screw longitudinally penetrates through the metal gasket and the transition boss in sequence and then is fixedly connected with the cutter body; the axes of the fastening screw, the metal washer, the transition boss, the cutter body and the chip groove are all positioned on the same straight line; the cutting edge part of the cutter body is a sawtooth with an R edge shape formed by a fan-shaped annular arc surface front cutter surface and a semicircular surface rear cutter surface, the front angle of the cutting edge is 6-12 degrees, and the rear angle of the cutting edge is 12-22 degrees.
2. The ultrasonic arc blade saw blade milling cutter for processing the wave-absorbing honeycomb according to claim 1, which is characterized in that: an inner groove is formed at the concave bottom of the transition boss, and the axes of the inner groove and the transition boss are positioned on the same straight line.
3. The ultrasonic arc blade saw blade milling cutter for processing the wave-absorbing honeycomb according to claim 1, which is characterized in that: the knife tooth profile of the knife body is of a broken line type.
4. The ultrasonic arc blade saw blade milling cutter for processing the wave-absorbing honeycomb according to claim 1 or 3, which is characterized in that: the rear cutter face of the cutter body forms a wedge angle of 2-5 degrees with the horizontal direction.
5. The ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs according to any one of claims 1 to 3, wherein: the transition boss is provided with a large-diameter end and a small-diameter end, the large-diameter end is connected with the upper cutter face of the cutter body, the small-diameter end is connected with the metal gasket, and the diameter of the outer ring of the metal gasket is smaller than that of the small-diameter end of the transition boss.
6. The ultrasonic arc blade saw blade milling cutter for processing the wave-absorbing honeycomb according to claim 5, wherein: the large-diameter end of the transition boss and the upper cutter face of the cutter body are in arc transition.
7. The ultrasonic arc blade saw blade milling cutter for processing the wave-absorbing honeycomb according to claim 1, which is characterized in that: the radius of the chip groove is 1-2mm, and the chip groove axially penetrates through the cutter body.
8. The ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs according to any one of claims 1 to 3 or 7, wherein: the cutter body is processed by ultrasonic vibration, the cutter body has periodic vibration along the direction of the main shaft, and the resonance frequency is matched with the main vibration frequency of an ultrasonic processing acoustic system.
9. The ultrasonic arc blade saw blade milling cutter for processing wave-absorbing honeycombs according to any one of claims 1 to 3 or 7, wherein: the surface of the cutter body is treated by CVD chemical vapor deposition or PVD physical vapor deposition.
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| CN202110852787.4A CN113477997B (en) | 2021-07-27 | 2021-07-27 | Ultrasonic arc blade saw blade milling cutter for machining wave-absorbing honeycomb |
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| CN202110852787.4A CN113477997B (en) | 2021-07-27 | 2021-07-27 | Ultrasonic arc blade saw blade milling cutter for machining wave-absorbing honeycomb |
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| CN113477997B true CN113477997B (en) | 2022-06-10 |
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| CN114274210B (en) * | 2021-12-29 | 2024-04-05 | 杭州电子科技大学 | Ultrasonic lace scribing and cutting disc cutter for wave-absorbing honeycomb finish machining and disc cutter assembly |
| CN115609028B (en) * | 2022-11-11 | 2024-10-29 | 大连理工大学 | Combined high-efficiency ultrasonic cutting wafer cutter |
| CN117124371B (en) * | 2023-10-26 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Ultrasonic disc cutter and processing method thereof |
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