CN116551424A - Annular thin-wall part processing flutter suppression device based on acoustic black hole - Google Patents

Annular thin-wall part processing flutter suppression device based on acoustic black hole Download PDF

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Publication number
CN116551424A
CN116551424A CN202310621050.0A CN202310621050A CN116551424A CN 116551424 A CN116551424 A CN 116551424A CN 202310621050 A CN202310621050 A CN 202310621050A CN 116551424 A CN116551424 A CN 116551424A
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CN
China
Prior art keywords
black hole
acoustic black
annular thin
vibrator
wall piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310621050.0A
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Chinese (zh)
Inventor
赵正彩
梅宁
尉渊
徐宝德
林琳
徐九华
张磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Beijing Xinghang Electromechanical Equipment Co Ltd
Original Assignee
Nanjing University of Aeronautics and Astronautics
Beijing Xinghang Electromechanical Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics, Beijing Xinghang Electromechanical Equipment Co Ltd filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN202310621050.0A priority Critical patent/CN116551424A/en
Publication of CN116551424A publication Critical patent/CN116551424A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses an annular thin-wall part machining flutter suppression device based on an acoustic black hole, which belongs to the field of cutting machining and comprises a support frame and a plurality of acoustic black hole damping vibrators; the support frame is provided with a central base and a plurality of rails fixed on the side surface of the central base; the acoustic black hole damping vibrators are arranged on the corresponding tracks; the acoustic black hole damping vibrator is an acoustic black hole structure formed by enclosing a contact side face and two non-contact side faces; the processing vibration suppression device is arranged in the annular thin-wall piece, and each acoustic black hole damping vibrator moves outwards to be propped against the inner surface of the annular thin-wall piece, so that the contact side surface of the acoustic black hole damping vibrator is fully contacted with the inner surface of the annular thin-wall piece, and the suppression of the processing vibration of the annular thin-wall piece is realized; the curvature of the contact side surface of the acoustic black hole damping vibrator is matched with the curvature of the inner surface of the annular thin-wall piece; the curvatures of the two non-contact sides of the acoustic black hole damping vibrator are reduced to the power. The invention has the advantages of structural vibration reduction, auxiliary support and the like.

Description

Annular thin-wall part processing flutter suppression device based on acoustic black hole
Technical Field
The invention belongs to the field of cutting processing, relates to a processing device, and particularly relates to an annular thin-wall part processing flutter suppression device based on an acoustic black hole.
Background
The annular thin-wall structure is widely applied to the aerospace field, has the characteristics of thin wall and large diameter-thickness ratio, and is a structure difficult to process. Because the structure has poor rigidity and weak stability, flutter is easy to generate in the processing process, and the surface quality and the processing precision are affected, a specific tool is needed when the structure is processed. However, most of auxiliary supporting structures in the conventional tools for annular thin-wall parts are manually adjusted, and most of auxiliary supporting structures do not have damping and vibration reduction functions, so that the machining efficiency is affected, and vibration generated in the machining process is difficult to reduce.
Disclosure of Invention
The invention provides an annular thin-wall part machining flutter suppression device based on an acoustic black hole, which aims to overcome the defects of the prior art.
In order to achieve the above object, the present invention provides an annular thin-walled workpiece processing chatter suppressing device based on an acoustic black hole, which has the following features: comprises a supporting frame and a plurality of acoustic black hole damping vibrators; the support frame is provided with a central base and a plurality of rails fixed on the side surface of the central base, and the rails are distributed in a radial shape around the central base; the number of the acoustic black hole damping vibrators is equal to and corresponds to that of the tracks of the support frame one by one, and the acoustic black hole damping vibrators are arranged on the corresponding tracks and can move along the tracks; the acoustic black hole damping vibrator is an acoustic black hole structure formed by enclosing a contact side face and two non-contact side faces; the contact side surface and the non-contact side surface are both curved surfaces; the contact side surface is positioned on the outer side, and the two non-contact side surfaces are positioned on the inner side; the processing vibration suppression device is arranged in the annular thin-wall piece, and each acoustic black hole damping vibrator moves outwards to be propped against the inner surface of the annular thin-wall piece, so that the contact side surface of the acoustic black hole damping vibrator is fully contacted with the inner surface of the annular thin-wall piece, and the suppression of the processing vibration of the annular thin-wall piece is realized; the curvature of the contact side surface of the acoustic black hole damping vibrator is matched with the curvature of the inner surface of the annular thin-wall piece, so that the contact area of the acoustic black hole damping vibrator and the inner surface of the annular thin-wall piece is increased; the curvatures of the two non-contact side surfaces of the acoustic black hole damping vibrator are reduced by power to realize the damping vibration attenuation effect of the acoustic black hole.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the choice of the curvature power of the acoustic black hole damping vibrator depends on the size of the annular thin-wall piece, and the smaller the size structure of the annular thin-wall piece is, the larger the curvature power of the acoustic black hole damping vibrator is; the larger the size structure of the annular thin-wall part is, the smaller the curvature power of the acoustic black hole damping vibrator is.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the curvature power of the acoustic black hole damping vibrator is larger than 2.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: and a compressed elastomer is arranged between each acoustic black hole damping vibrator and the central base of the supporting frame, and the compressed elastomer compresses the acoustic black hole damping vibrator on the inner surface of the annular thin-wall piece.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the elastic piece is a spring, and the spring is sleeved on a track corresponding to the corresponding acoustic black hole damping vibrator.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the acoustic black hole damping vibrator is provided with a sliding through hole penetrating through the inner side surface and the outer side surface of the acoustic black hole damping vibrator, and is sleeved on a track of the support frame through the sliding through hole and is in sliding connection with the track.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the sliding through hole of the acoustic black hole damping vibrator is matched with the shape of the track of the supporting frame.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: the sliding through hole of the acoustic black hole damping vibrator is a stepped hole, and the section of the outer side hole is larger than that of the inner side hole; the outer end of each track of the support frame is detachably fixed with a limiting piece, and the limiting piece is smaller than the outer side hole section of the sliding through hole of the acoustic black hole damping vibrator and larger than the inner side hole section.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: and each acoustic black hole damping vibrator is provided with a connecting rod, one end of each connecting rod is rotationally connected with the upper surface of each acoustic black hole damping vibrator, and the other end of each connecting rod is detachably connected with the central base of the supporting frame.
Further, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which can also have the following characteristics: wherein, a plurality of tracks of support frame evenly distributed around central base.
The invention has the beneficial effects that:
1. the annular thin-wall part processing flutter suppression device based on the acoustic black hole provided by the invention applies the structural vibration reduction characteristic of the acoustic black hole to the processing field and provides an effective solution for processing flutter suppression.
2. The annular thin-wall part processing flutter suppression device based on the acoustic black hole is simple in design, flexible in use and capable of being used only by simply changing the structures of the annular thin-wall parts with different sizes.
3. According to the annular thin-wall part processing flutter suppression device based on the acoustic black hole, the acoustic black hole damping vibrator is fixed on the inner surface of the annular thin-wall part through the friction force generated by the pressing force of the elastic part, additional support is not needed, and the original tool of the annular thin-wall part is not needed to be changed.
4. According to the annular thin-wall part processing flutter suppression device based on the acoustic black hole, based on the acoustic black hole damping vibration attenuation principle, the annular thin-wall part processing flutter is suppressed to a certain extent, and in addition, due to the compression force of the springs, the method has a certain auxiliary supporting effect on the inner surface of the annular thin-wall part, and the rigidity of the annular thin-wall part is improved.
Drawings
FIG. 1 is a schematic structural view of an annular thin-walled workpiece processing flutter suppression device based on an acoustic black hole;
FIG. 2 is a schematic structural view of a support frame in the annular thin-walled workpiece processing flutter suppression device based on acoustic black holes;
FIG. 3 is a schematic structural view of an acoustic black hole damping vibrator in the annular thin-wall part processing flutter suppression device based on an acoustic black hole;
fig. 4 is a working schematic diagram of the annular thin-walled workpiece processing flutter suppression device based on the acoustic black hole.
Detailed Description
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1, the invention provides an annular thin-wall part processing flutter suppression device based on an acoustic black hole, which comprises a support frame 1 and a plurality of acoustic black hole damping vibrators 2.
As shown in fig. 2, the support 1 has a center base 11 and a plurality of rails 12 fixed to the side of the center base 11, and the plurality of rails 12 are radially distributed around the center base 11. In a preferred embodiment, the plurality of tracks 12 are evenly distributed around the central base 11.
The number of the acoustic black hole damping vibrators 2 is equal to the number of the rails 12 of the support frame 1 and corresponds to the number of the rails 12 one by one, and the acoustic black hole damping vibrators 2 are arranged on the corresponding rails 12 and can move along the rails 12.
As shown in fig. 3, the acoustic black hole damping vibrator 2 is an acoustic black hole structure surrounded by one contact side surface 21 and two non-contact side surfaces 22. The contact side 21 and the non-contact side 22 are both curved surfaces. The contact side 21 is located on the outside and the two non-contact sides 22 are located on the inside. The inner side in this application refers to a direction approaching the center of the device (i.e., the center base 11 of the support frame 1), and the outer side refers to a direction away from the center of the device. The two non-contact sides 22 are symmetrically arranged.
The processing vibration suppression device is arranged in the annular thin-wall piece, each acoustic black hole damping vibrator 2 moves outwards to be propped against the inner surface of the annular thin-wall piece, so that the contact side surface 21 of the acoustic black hole damping vibrator 2 is fully contacted with the inner surface of the annular thin-wall piece, and the suppression of the processing vibration of the annular thin-wall piece is realized. The curvature of the contact side surface 21 of the acoustic black hole damping vibrator 2 is matched with the curvature of the inner surface of the annular thin-wall piece, so that the contact area of the acoustic black hole damping vibrator 2 and the inner surface of the annular thin-wall piece is increased. The curvatures of the two non-contact side surfaces 22 of the acoustic black hole damping vibrator 2 are reduced to power so as to realize the damping vibration attenuation effect of the acoustic black hole.
Specifically, the acoustic black hole damping vibrator 2 is provided with a sliding through hole 23 penetrating through the inner side surface and the outer side surface of the acoustic black hole damping vibrator 2, and the acoustic black hole damping vibrator 2 is sleeved on the rail 12 of the support frame 1 through the sliding through hole 23 and is in sliding connection with the rail 12. The sliding through holes 23 of the acoustic black hole damping vibrator 2 are matched with the shape of the rail 12 of the support frame 1, for example, the sliding through holes are square, so that the acoustic black hole damping vibrator 2 can be kept in a horizontal state all the time, and even if the contact side surface 21 of the acoustic black hole damping vibrator 2 is kept in a state capable of being matched with the inner surface of the annular thin-wall piece all the time.
A compressed elastomer 3 is arranged between each acoustic black hole damping vibrator 2 and the central base 11 of the support frame 1, and the compressed elastomer 3 compresses the acoustic black hole damping vibrator 2 on the inner surface of the annular thin-wall piece. In this embodiment, the elastic member is a spring, and the spring is sleeved on the rail 12 corresponding to the acoustic black hole damping vibrator 2.
The sliding through hole 23 of the acoustic black hole damping vibrator 2 is a stepped hole, and the cross section of the outer hole is larger than that of the inner hole. The outer end of each track 12 of the support frame 1 is detachably fixed with a limiting piece 121, the limiting piece 121 is smaller than the outer hole section of the sliding through hole 23 of the acoustic black hole damping vibrator 2 and larger than the inner hole section, namely, when the acoustic black hole damping vibrator 2 moves outwards along the track 12, the limiting piece 121 can be placed in the hole, so that the acoustic black hole damping vibrator 2 can be prevented from being separated from the support frame 1, and meanwhile, the contact effect of the acoustic black hole damping vibrator 2 and the annular thin-wall piece cannot be influenced. In this embodiment, the limiting member 121 is a nut, and the nut is in threaded connection with the outer end of the rail 12 of the support frame 1.
Each acoustic black hole damping vibrator 2 is provided with a connecting rod 4, one end of the connecting rod 4 is rotationally connected with the upper surface of the acoustic black hole damping vibrator 2, and the other end of the connecting rod is detachably connected with a center base 11 of the support frame 1. In this embodiment, the outer end of the connecting rod 4 is rotatably connected with the upper surface of the acoustic black hole damping vibrator 2 through the bolt 5, the inner end of the connecting rod 4 is provided with a connecting through hole 41, the upper surface of the central base 11 of the supporting frame 1 is provided with a connecting boss 111 correspondingly matched with the connecting through hole 41, and the inner end of the connecting rod 4 is detachably connected with the central base 11 by sleeving the connecting through hole 41 on the connecting boss 111.
The choice of the curvature power of the acoustic black hole damping vibrator 2 depends on the size of the annular thin-wall piece, and the smaller the size structure of the annular thin-wall piece is, the larger the curvature power of the acoustic black hole damping vibrator 2 is. The larger the size structure of the annular thin-wall part is, the smaller the curvature power of the acoustic black hole damping vibrator 2 is. For example, the curvature power of the acoustic black hole damping vibrator 2 can be selected to be 2.5 for an annular thin-walled member with a diameter of about 1 meter. The annular thin-walled member with a diameter smaller than 1 m can be selected as the power of curvature of the acoustic black hole damping vibrator 2 to be 2.2 or less. The curvature power of the acoustic black hole damping vibrator 2 can be selected to be 3 or more power of the annular thin-wall part with the diameter larger than 1 meter. The curvature power of the acoustic black hole damping vibrator 2 is larger than 2 so as to ensure the vibration reduction effect of the acoustic black hole effect.
The installation and use method of the annular thin-wall part processing flutter suppression device comprises the following steps: firstly, a spring is sleeved on each track 12 of a support frame 1, then a sliding through hole 23 of an acoustic black hole damping vibrator 2 is aligned with a corresponding track 12 to slide and load the acoustic black hole damping vibrator 2, a connecting rod 4 is pulled to enable the through hole of the connecting rod 4 to be sleeved on a boss of a central base 11 of the support frame 1, at the moment, the relative positions of the acoustic black hole damping vibrator 2 and the support frame 1 are fixed, nuts are screwed on the outer ends of the tracks 12 of the support frame 1 to prevent the acoustic black hole damping vibrator 2 from being separated from the support frame 1, and at the moment, the annular thin-wall piece processing flutter suppression device is assembled. When the vibration suppression device is used, as shown in fig. 4, the annular thin-wall part processing vibration suppression device is horizontally placed into the annular thin-wall part, the connecting rods 4 are lifted in sequence, the acoustic black hole damping vibrator 2 is tightly pressed on the inner surface of the annular thin-wall part under the action of the spring force of the compression spring, at the moment, the acoustic black hole damping vibrator 2 provides certain damping and auxiliary support for the annular thin-wall structure, and the vibration suppression effect is realized during the processing of the annular thin-wall part.
The support frame 1 can be adjusted in size and the number of the tracks 12 according to the size of the annular thin-wall piece, and the number of the tracks 12 of the support frame 1 can be increased along with the increase of the radius of the annular thin-wall structure so as to ensure the vibration reduction effect of the annular thin-wall piece processing flutter suppression device.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Annular thin wall spare processing flutter suppression device based on acoustic black hole, its characterized in that:
comprises a supporting frame and a plurality of acoustic black hole damping vibrators;
the support frame is provided with a central base and a plurality of rails fixed on the side surface of the central base, and the rails are distributed in a radial shape around the central base;
the number of the acoustic black hole damping vibrators is equal to and corresponds to that of the tracks of the support frame one by one, and the acoustic black hole damping vibrators are arranged on the corresponding tracks and can move along the tracks;
the acoustic black hole damping vibrator is an acoustic black hole structure formed by enclosing a contact side face and two non-contact side faces; the contact side surface and the non-contact side surface are both curved surfaces; the contact side surface is positioned on the outer side, and the two non-contact side surfaces are positioned on the inner side;
the processing vibration suppression device is arranged in the annular thin-wall piece, and each acoustic black hole damping vibrator moves outwards to be propped against the inner surface of the annular thin-wall piece, so that the contact side surface of the acoustic black hole damping vibrator is fully contacted with the inner surface of the annular thin-wall piece, and the suppression of the processing vibration of the annular thin-wall piece is realized;
the curvature of the contact side surface of the acoustic black hole damping vibrator is matched with the curvature of the inner surface of the annular thin-wall piece; the curvatures of the two non-contact sides of the acoustic black hole damping vibrator are reduced to the power.
2. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
the choice of the curvature power of the acoustic black hole damping vibrator depends on the size of the annular thin-wall piece, and the smaller the size structure of the annular thin-wall piece is, the larger the curvature power of the acoustic black hole damping vibrator is; the larger the size structure of the annular thin-wall part is, the smaller the curvature power of the acoustic black hole damping vibrator is.
3. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 2, wherein:
the curvature power of the acoustic black hole damping vibrator is larger than 2.
4. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
and a compressed elastomer is arranged between each acoustic black hole damping vibrator and the central base of the supporting frame, and the compressed elastomer compresses the acoustic black hole damping vibrator on the inner surface of the annular thin-wall piece.
5. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 4, wherein:
the elastic piece is a spring, and the spring is sleeved on a track corresponding to the corresponding acoustic black hole damping vibrator.
6. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
the acoustic black hole damping vibrator is provided with a sliding through hole penetrating through the inner side surface and the outer side surface of the acoustic black hole damping vibrator, and is sleeved on a track of the support frame through the sliding through hole and is in sliding connection with the track.
7. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 6, wherein:
the sliding through hole of the acoustic black hole damping vibrator is matched with the shape of the track of the supporting frame.
8. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
the sliding through hole of the acoustic black hole damping vibrator is a stepped hole, and the section of the outer side hole is larger than that of the inner side hole;
the outer end of each track of the support frame is detachably fixed with a limiting piece, and the limiting piece is smaller than the outer side hole section of the sliding through hole of the acoustic black hole damping vibrator and larger than the inner side hole section.
9. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
and each acoustic black hole damping vibrator is provided with a connecting rod, one end of each connecting rod is rotationally connected with the upper surface of each acoustic black hole damping vibrator, and the other end of each connecting rod is detachably connected with the central base of the supporting frame.
10. The acoustic black hole-based annular thin-wall piece machining flutter suppression device according to claim 1, wherein:
wherein, a plurality of tracks of support frame evenly distributed around central base.
CN202310621050.0A 2023-05-30 2023-05-30 Annular thin-wall part processing flutter suppression device based on acoustic black hole Pending CN116551424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310621050.0A CN116551424A (en) 2023-05-30 2023-05-30 Annular thin-wall part processing flutter suppression device based on acoustic black hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310621050.0A CN116551424A (en) 2023-05-30 2023-05-30 Annular thin-wall part processing flutter suppression device based on acoustic black hole

Publications (1)

Publication Number Publication Date
CN116551424A true CN116551424A (en) 2023-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310621050.0A Pending CN116551424A (en) 2023-05-30 2023-05-30 Annular thin-wall part processing flutter suppression device based on acoustic black hole

Country Status (1)

Country Link
CN (1) CN116551424A (en)

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