CN113894857A - Longitudinal-torsional resonance amplitude transformer matched with special milling cutter - Google Patents
Longitudinal-torsional resonance amplitude transformer matched with special milling cutter Download PDFInfo
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- CN113894857A CN113894857A CN202111200325.0A CN202111200325A CN113894857A CN 113894857 A CN113894857 A CN 113894857A CN 202111200325 A CN202111200325 A CN 202111200325A CN 113894857 A CN113894857 A CN 113894857A
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- Prior art keywords
- longitudinal
- amplitude transformer
- torsional resonance
- milling cutter
- resonance amplitude
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- 238000003801 milling Methods 0.000 title claims abstract description 81
- 230000007704 transition Effects 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 229920006231 aramid fiber Polymers 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to the field of ultrasonic vibration auxiliary machining, in particular to a longitudinal-torsional resonance amplitude transformer matched with a special milling cutter. It is characterized by comprising a longitudinal-torsional resonance amplitude transformer and a special milling cutter. The longitudinal-torsional resonance amplitude transformer comprises a top cylindrical section, a bottom cylindrical section and a circular truncated cone section with four inclined grooves in the middle. The special milling cutter comprises a top external thread, a transition section, a cylindrical section with a mounting and clamping position and a conical section with a cutting edge. The amplitude transformer and the cutter are connected by screw thread. The invention provides an ultrasonic amplitude transformer for converting longitudinal vibration into longitudinal and torsional composite vibration, and designs an ultrasonic vibration auxiliary milling straight-edge cutter used in combination. The ultrasonic vibration assisted milling machine is mainly used for ultrasonic vibration assisted milling of aramid fiber honeycomb materials, compared with the traditional processing mode, the ultrasonic vibration assisted milling machine has the advantages of large vibration amplitude, stable milling force, high material removal rate, good milling quality and the like, and can overcome the defects of tearing, cell deformation, burrs and the like in the processing of the aramid fiber honeycomb materials.
Description
Technical Field
The invention relates to a longitudinal-torsional resonance amplitude transformer for a milling cutter special for matching aramid fiber honeycomb materials, belonging to the field of ultrasonic vibration auxiliary processing; the annular inclined groove is formed in the amplitude transformer, so that the amplitude transformer can amplify ultrasonic amplitude and convert longitudinal vibration transmitted by the transducer into longitudinal-torsional resonance to be output, and ultrasonic vibration energy can be better used for rotary ultrasonic vibration machining.
Background
The ultrasonic amplitude transformer can be realized by the ultrasonic milling process of the aramid fiber honeycomb material. In a particular milling process, the amplitude of the vibration produced by the transducer is typically a few microns, which makes it difficult to meet machining requirements. Therefore, amplitude amplification by a horn is required to meet the processing requirements (typically tens to tens of microns). On the other hand, the generated longitudinal vibration is converted at the inclined groove to generate longitudinal and torsional composite vibration, so that the special ultrasonic milling cutter connected with the front end of the amplitude transformer is driven, and the ultrasonic milling processing of the aramid fiber honeycomb material is realized.
In ultrasonic-assisted machining, it is generally required that the vibration direction of the tool coincides with the feed direction of the tool or has a vibration component in the feed direction to achieve a good ultrasonic vibration machining effect. For example, in the rotary ultrasonic drilling process, the tool is required to vibrate longitudinally, and in the ultrasonic turning process, the tool is required to vibrate elliptically, and the like. In engineering applications, there are generally two ways to achieve torsional vibration: firstly, a torsional vibration transducer is adopted; secondly, the amplitude transformer with a special structure is adopted to convert the longitudinal vibration into the torsional vibration. The invention realizes the conversion of vibration modes by processing and uniformly distributing circular chutes in the middle of the amplitude transformer, namely converting the longitudinal vibration output by the transducer into longitudinal-torsional resonance and outputting the longitudinal-torsional resonance at the tail end of the amplitude transformer.
The longitudinal-torsional resonance amplitude transformer has the main problems faced in the practical use process: how to realize reliable conversion of longitudinal vibration to longitudinal-torsional resonance without influencing effective transmission of ultrasonic amplitude while ensuring stable, reliable and high-precision clamping of the ultrasonic milling cutter is a problem of priority in designing a longitudinal-torsional resonance amplitude transformer. In addition, the longitudinal-torsional resonance amplitude transformer has serious heating phenomenon under the condition of large amplitude of tens of microns, and the design difficulty of the longitudinal-torsional resonance amplitude transformer is the difficulty of how to reliably dissipate heat and ensure the stable operation of a system.
Disclosure of Invention
According to the technical problems, the invention provides the longitudinal-torsional resonance amplitude transformer for the milling cutter special for matching the aramid fiber honeycomb material, which has large amplitude output capacity, can realize reliable conversion from longitudinal vibration to longitudinal-torsional resonance, can replace ultrasonic milling cutters with different specifications, solves the problem that the aramid fiber honeycomb material is difficult to process by the traditional ultrasonic processing method, and improves the automation level of ultrasonic milling.
The technical means adopted by the invention are as follows:
a longitudinal-torsional resonance amplitude transformer (shown in figure 1) for ultrasonic vibration assisted milling matched with a special milling cutter for aramid fiber honeycomb materials comprises a longitudinal-torsional resonance amplitude transformer and a special milling cutter; the top and bottom cylindrical sections of the longitudinal-torsional resonance amplitude transformer are both provided with threaded holes for connecting with the transducer and a special milling cutter, and the top of the special milling cutter is provided with an external thread matched with the threaded holes of the cylindrical section at the bottom end of the longitudinal-torsional resonance amplitude transformer; the longitudinal-torsional resonance amplitude transformer has a top cylindrical section with threaded holes for connecting with the transducer, a plurality of chutes with specific geometric parameters are processed at preset positions of a middle circular platform section, a bottom cylindrical section with threaded holes for connecting with a special milling cutter, a transition arc is arranged between the top cylindrical section and the middle circular platform section, and a transition arc is arranged between the middle circular platform section and the bottom cylindrical section. The special milling cutter is characterized in that an external thread is machined on the top of the special milling cutter and matched with a threaded hole of a cylindrical section at the bottom of the longitudinal-torsional resonance amplitude transformer, and a clamping position is arranged on the middle cylindrical section of the special milling cutter, so that the cutter can be replaced conveniently. A transition cylindrical section is arranged between the external thread at the top and the mounting holding section, the bottom conical section of the transition cylindrical section is a cutting edge of the special milling cutter, and the special milling cutter is provided with two milling edges and is processed with a cutter wedge angle.
An annular chute with specific geometric parameters is arranged at a preset position of the circular platform section of the longitudinal-torsional resonance amplitude transformer, and when longitudinal waves are transmitted to the chute position, the vibration direction of part of the longitudinal waves is changed through the reflection and refraction effects of the chute to generate tangential components; because the width of the inclined grooves and the distance between the inclined grooves are far smaller than one wavelength, and the inclined grooves are parallel to each other, when longitudinal waves are transmitted to the inclined grooves, the action effects of the inclined grooves are superposed, the longitudinal vibration of the inclined grooves is converted into torsional vibration, and the longitudinal and torsional composite vibration is simultaneously generated at the output end.
The specific geometric parameter facilities of the circular ring chute at the middle circular section of the longitudinal-torsional resonance amplitude transformer are as follows: the length of the chutes is 15-30 mm, the inclination angle of the chutes is 20-50 degrees, the depth is 2-4 mm, the width is 0.6-1 mm, the number of the chutes is 4, the chutes are uniformly distributed along the circumferential direction, the chutes are parallel to each other, and the distance between the chutes is far smaller than the wavelength of longitudinal waves when the longitudinal waves are transmitted in the amplitude transformer.
The ratio of the diameter of the cylindrical section at the top of the longitudinal-torsional resonance amplitude transformer to the diameter of the cylindrical section at the bottom of the longitudinal-torsional resonance amplitude transformer is 5: 3. The conicity of the middle circular table section of the longitudinal-torsional resonance amplitude transformer is 1: 4.
The tool sharp angle of the two milling edges of the special milling tool is 15-21 degrees, and the tool sharp angle of the milling edges of the special milling tool is defined as the included angle between the tool cutting edge and the tool shaft. The cutter wedge angle of the special milling cutter is 12-18 degrees, and the cutter wedge angle of the special milling cutter is defined as the included angle of two side surfaces of the cutting edge participating in cutting in a plane perpendicular to the axis of the cutter.
When the ultrasonic milling cutter is replaced, the whole ultrasonic vibration system does not need to be replaced, and only the special milling cutter connected with the ultrasonic amplitude transformer needs to be replaced.
The method provided by the invention starts from the actual ultrasonic milling, meets the requirements of high-quality and high-efficiency ultrasonic milling of the aramid fiber honeycomb material, has the advantages of convenience in disassembly, strong interchangeability and the like, and can improve the processing efficiency and the automation level of ultrasonic milling of the honeycomb material.
For the reasons, the invention can be widely popularized in the fields of processing technology and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an assembly schematic of the present invention; FIG. 2 is a cross-sectional view of the present invention; fig. 3 is a schematic view of the combined structure of the present invention.
Fig. 4 is a front view of the longitudinal-torsional resonance horn of the present invention.
Fig. 5 is a front view of the special milling tool of the invention.
In the figure: 1. longitudinal-torsional resonance amplitude transformer 2, special milling cutter 3, special milling cutter 5, threaded hole 4, circular chute 6, external thread 7, cutter milling edge 8 and cutter wedge angle
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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. 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 to 3, a longitudinal-torsional resonance amplitude transformer matched with a special milling cutter comprises two parts, namely an amplitude transformer and a special cutter.
Threaded holes 3 and 5 are processed in the top and bottom cylindrical sections of the longitudinal-torsional resonance amplitude transformer 1 and are used for being connected with an energy converter (not shown) and a special milling cutter 2, and an external thread 6 matched with the threaded hole 5 in the cylindrical section at the bottom end of the longitudinal-torsional resonance amplitude transformer 1 is designed in the top of the special milling cutter 2; the longitudinal-torsional resonance amplitude transformer 1 is characterized in that a threaded hole 3 is formed in the top cylindrical section, threads are machined in the threaded hole 3 and used for being connected with a transducer, a plurality of inclined grooves 4 with specific geometric parameters are machined in the preset position of the middle circular platform section of the longitudinal-torsional resonance amplitude transformer, a threaded hole 5 is also formed in the bottom cylindrical section of the longitudinal-torsional resonance amplitude transformer and used for being connected with a special milling cutter 2, a transition arc is arranged between the top cylindrical section and the middle circular platform section, and a transition arc is arranged between the middle circular platform section and the bottom cylindrical section.
The special milling cutter 2 is provided with an external thread 6 on the top, the external thread 6 is matched with the threaded hole 5 at the bottom cylindrical section of the longitudinal-torsional resonance amplitude transformer 1, and the middle cylindrical section is provided with a clamping position, so that the cutter can be replaced conveniently. A transition cylindrical section is arranged between the top external thread 6 and the mounting holding section, the bottom conical section is the cutting edge 7 of the special milling cutter, and the special milling cutter is provided with two milling edges 7 and is processed with a cutter wedge angle 8.
The ratio of the diameter of the top cylindrical section to the diameter of the bottom cylindrical section of the longitudinal-torsional resonance amplitude transformer 1 is 5: 3. The conicity of the middle circular table section of the longitudinal-torsional resonance amplitude transformer 1 is 1: 4.
The specific geometric parameters of the circular ring chute at the middle circular section of the longitudinal-torsional resonance amplitude transformer are set as follows: the length of the chutes is 15-30 mm, the inclination angle of the chutes is 20-50 degrees, the depth is 2-4 mm, the width is 0.6-1 mm, the number of the chutes is 4, the chutes are uniformly distributed along the circumferential direction, the chutes are parallel to each other, and the distance between the chutes is far smaller than the wavelength of longitudinal waves when the longitudinal waves are transmitted in the amplitude transformer.
The tool sharp angle of the two milling edges 7 of the special milling tool 2 is 15-21 degrees, and the tool sharp angle of the milling edges of the special milling tool is defined as the included angle between the tool cutting edge and the tool shaft. The cutter wedge angle 8 of the special milling cutter is 12-18 degrees, and the cutter wedge angle of the special milling cutter is defined as the included angle of two side surfaces of the cutting edge participating in cutting in a plane perpendicular to the axis of the cutter.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A longitudinal-torsional resonance amplitude transformer matched with a special milling cutter is characterized by comprising a longitudinal-torsional resonance amplitude transformer and the special milling cutter; the top and bottom cylindrical sections of the longitudinal-torsional resonance amplitude transformer are both provided with threaded holes for connecting with the transducer and the special milling cutter, and the top of the special milling cutter is provided with external threads matched with the threaded holes of the cylindrical section at the bottom end of the longitudinal-torsional resonance amplitude transformer; the longitudinal-torsional resonance amplitude transformer has a top cylindrical section with threaded holes for connecting with the transducer, a plurality of chutes with specific geometric parameters are processed at preset positions of a middle circular platform section, a bottom cylindrical section with threaded holes for connecting with a special milling cutter, a transition arc is arranged between the top cylindrical section and the middle circular platform section, and a transition arc is arranged between the middle circular platform section and the bottom cylindrical section.
2. The top of the special milling cutter is provided with an external thread which is matched with a threaded hole of a cylindrical section at the bottom of the longitudinal-torsional resonance amplitude transformer, and the cylindrical section at the middle of the external thread is provided with a clamping position, so that the cutter can be conveniently replaced; a transition cylindrical section is arranged between the external thread at the top and the mounting holding section, the bottom conical section of the transition cylindrical section is a cutting edge of the special milling cutter, and the special milling cutter is provided with two milling edges and is processed with a cutter wedge angle.
3. The longitudinal-torsional resonance amplitude transformer matched with a special milling cutter as claimed in claim 1, wherein a circular chute with specific geometric parameters is arranged at a preset position of the circular platform section of the longitudinal-torsional resonance amplitude transformer, and when longitudinal waves are transmitted to the position of the chute, the vibration direction of part of the longitudinal waves is changed through the reflection and refraction of the chute, so that a tangential component is generated; because the width of the inclined grooves and the distance between the inclined grooves are far smaller than one wavelength, and the inclined grooves are parallel to each other, when longitudinal waves are transmitted to the inclined grooves, the action effects of the inclined grooves are superposed, the longitudinal vibration of the inclined grooves is converted into torsional vibration, and the longitudinal and torsional composite vibration is simultaneously generated at the output end.
4. The longitudinal-torsional resonance amplitude transformer matched with the special milling cutter as claimed in claim 1, wherein the specific geometric parameter facilities of the circular ring chute of the middle circular section of the longitudinal-torsional resonance amplitude transformer are as follows: the length of the chutes is 15-30 mm, the inclination angle of the chutes is 20-50 degrees, the depth is 2-4 mm, the width is 0.6-1 mm, the number of the chutes is 4, the chutes are uniformly distributed along the circumferential direction, the chutes are parallel to each other, and the distance between the chutes is far smaller than the wavelength of longitudinal waves when the longitudinal waves are transmitted in the amplitude transformer.
5. The longitudinal-torsional resonance amplitude transformer matched with the special milling cutter as claimed in claim 1, wherein the ratio of the diameter of the cylindrical section at the top of the longitudinal-torsional resonance amplitude transformer to the diameter of the cylindrical section at the bottom of the longitudinal-torsional resonance amplitude transformer is 5: 3.
6. The longitudinal-torsional resonance amplitude transformer matched with the special milling cutter as claimed in claim 1, wherein the taper of the middle circular platform section of the longitudinal-torsional resonance amplitude transformer is 1: 4.
7. The longitudinal-torsional resonance amplitude transformer matched with the special milling cutter as claimed in claim 1, wherein the two milling edges of the special milling cutter have a tip angle of 19 degrees, and the tip angle of the milling edges of the special milling cutter is defined as the included angle between the cutting edge of the cutter and the cutter shaft.
8. The longitudinal-torsional resonance horn of claim 1, wherein the tool wedge angle of the special milling tool is 12 °, and the tool wedge angle of the special milling tool is defined as the angle between two side surfaces of the cutting edge participating in cutting in a plane perpendicular to the tool axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200325.0A CN113894857A (en) | 2021-10-15 | 2021-10-15 | Longitudinal-torsional resonance amplitude transformer matched with special milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200325.0A CN113894857A (en) | 2021-10-15 | 2021-10-15 | Longitudinal-torsional resonance amplitude transformer matched with special milling cutter |
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| Publication Number | Publication Date |
|---|---|
| CN113894857A true CN113894857A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111200325.0A Pending CN113894857A (en) | 2021-10-15 | 2021-10-15 | Longitudinal-torsional resonance amplitude transformer matched with special milling cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372205A (en) * | 2023-06-05 | 2023-07-04 | 成都飞机工业（集团）有限责任公司 | Two-stage ultrasonic straight blade knife and processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07266297A (en) * | 1994-03-29 | 1995-10-17 | Suzuki Motor Corp | Ultrasonic cutter |
| US20040253062A1 (en) * | 2001-12-21 | 2004-12-16 | Ceratizit Austria Gesellschaft Mbh | Milling Tool |
| CN109909533A (en) * | 2019-04-22 | 2019-06-21 | 上海应用技术大学 | A kind of intelligence longitudinal-torsional composite ultrasonic milling attachment |
| CN112589881A (en) * | 2020-11-04 | 2021-04-02 | 北京动力机械研究所 | Carbon fiber ultrasonic vibration auxiliary cutting system |
-
2021
- 2021-10-15 CN CN202111200325.0A patent/CN113894857A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07266297A (en) * | 1994-03-29 | 1995-10-17 | Suzuki Motor Corp | Ultrasonic cutter |
| US20040253062A1 (en) * | 2001-12-21 | 2004-12-16 | Ceratizit Austria Gesellschaft Mbh | Milling Tool |
| CN109909533A (en) * | 2019-04-22 | 2019-06-21 | 上海应用技术大学 | A kind of intelligence longitudinal-torsional composite ultrasonic milling attachment |
| CN112589881A (en) * | 2020-11-04 | 2021-04-02 | 北京动力机械研究所 | Carbon fiber ultrasonic vibration auxiliary cutting system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372205A (en) * | 2023-06-05 | 2023-07-04 | 成都飞机工业（集团）有限责任公司 | Two-stage ultrasonic straight blade knife and processing method |
| CN116372205B (en) * | 2023-06-05 | 2023-09-29 | 成都飞机工业（集团）有限责任公司 | Two-stage ultrasonic straight blade knife and processing method |
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Application publication date: 20220107 |
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