CN111299676A - Mirror image milling variable-rigidity fluid-solid hybrid follow-up supporting device for thin-wall part - Google Patents
Mirror image milling variable-rigidity fluid-solid hybrid follow-up supporting device for thin-wall part Download PDFInfo
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- CN111299676A CN111299676A CN201911180645.7A CN201911180645A CN111299676A CN 111299676 A CN111299676 A CN 111299676A CN 201911180645 A CN201911180645 A CN 201911180645A CN 111299676 A CN111299676 A CN 111299676A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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Abstract
The invention provides a mirror-image milling variable-rigidity fluid-solid hybrid follow-up supporting device for a thin-wall part, which comprises a shell component, a contact type supporting component and a fluid flow non-contact type measurement supporting component, wherein: the shell assembly protects, fixes and supports the contact type supporting assembly and the liquid flow non-contact type measurement supporting assembly; the contact type supporting assembly comprises a ball supporting head, and the ball supporting head is used for carrying out contact type supporting on the workpiece; the liquid flow non-contact type measurement supporting assembly comprises a spray head, and the spray head carries out non-contact type supporting on a workpiece. The invention is used for solving the problems of deformation and vibration in the mirror image milling process of the large thin-wall part. The device adopts the fluid-solid mixed supporting mode, which not only can provide enough supporting force, but also can prevent indentation and scratch on the supporting surface of the workpiece. The device has the function of measuring thickness in real time, and can realize variable-rigidity active vibration suppression by adjusting the pressure of the cylinder and the pressure of liquid.
Description
Technical Field
The invention relates to the field of thin-wall part machining, in particular to a mirror-image milling variable-rigidity fluid-solid hybrid follow-up supporting device for a thin-wall part.
Background
The large thin-wall part has the characteristics of large size, thin wall thickness and small rigidity, and is easy to vibrate and deform in processing. The traditional chemical milling method for processing the thin-wall part has the defects of low efficiency, high pollution and low precision. The mirror milling developed in recent years is a novel green efficient high-precision thin-wall part machining method for replacing chemical milling. The mirror milling process is characterized in that a processing head and a supporting head which move synchronously are respectively arranged on two sides of a workpiece, so that a processing area of a weak rigid part is locally supported in the processing process, the processing vibration and deformation of a thin-wall part are reduced, and the high-efficiency and high-precision processing of the thin-wall part is realized. The prior mirror milling follow-up supporting device mostly adopts a solid supporting mode, and the contact mode with a workpiece is rolling or sliding. In order to inhibit the vibration and deformation of the thin-wall part, the supporting force cannot be too small, and the surface of the workpiece is easily scratched or indented by a solid supporting mode under a larger supporting force. The conventional mirror milling support device can rarely carry out active vibration suppression by changing the dynamic characteristics of a system per se, and has weak effect of suppressing short-time vibration caused by variable parameter cutting such as variable rotating speed, variable thickness and the like.
Patent document CN206550656U discloses a fluid follow-up auxiliary supporting device for thin-wall workpiece machining, which uses a liquid follow-up auxiliary supporting device to support the thin-wall workpiece to reduce the influence of dynamic cutting force on workpiece deformation, and suppresses thin-wall vibration in the cutting machining process through the damping of fluid. However, the supporting device of the above patent document is fixed to the milling end, and is restricted by the machining space, and cannot support a large thin-walled workpiece. This patent document uses a single fluid support, has a low support force, is less rigid, and sometimes even less effective in damping and reducing deformation than a solid support device, and the device does not have the functions of real-time measurement and active damping.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a variable-rigidity fluid-solid hybrid follow-up supporting device for mirror milling of a thin-wall part.
The invention provides a variable-rigidity fluid-solid hybrid follow-up supporting device for mirror image milling of a thin-wall part, which comprises a shell assembly, a contact type supporting assembly and a fluid flow non-contact type measurement supporting assembly, wherein:
the shell component is used for protecting, fixing and supporting the contact type supporting component and the liquid flow non-contact type measurement supporting component;
the contact type supporting assembly comprises a ball supporting head, and the ball supporting head is used for carrying out contact type supporting on the workpiece;
the liquid flow non-contact type measurement supporting assembly comprises a spray head, and the spray head carries out non-contact type supporting on a workpiece.
Preferably, the contact support assembly further comprises a mount member and a support cylinder, wherein:
the mounting seat component is connected with the shell component, and the supporting cylinder is mounted on the mounting seat component and drives the ball supporting head to move in a telescopic mode.
Preferably, the liquid flow non-contact measurement support assembly further comprises an ultrasonic thickness measurement sensor and an eddy current sensor, wherein:
the ultrasonic thickness measuring sensor is positioned inside the spray head and is used for measuring the thickness of the workpiece;
the eddy current sensors are distributed in the circumferential direction of the spray head and measure the distance between the spray head and the workpiece.
Preferably, the housing assembly comprises a support housing and a front cover plate, the support housing is provided with a mounting hole for connecting with an external driving device, and the front cover plate is contacted with the contact type support assembly and fixes the contact type support assembly on the housing assembly.
Preferably, the top end of the ball support head is a ball, and the ball can be attached to the surface of the workpiece to support the workpiece.
Preferably, the ball support heads are provided in plurality, and the plurality of ball support heads are distributed in the circumferential direction of the shower head.
Preferably, each ball support head is correspondingly provided with one support cylinder, and each ball support head is independently controlled.
Preferably, the middle part of the front end cover plate is provided with a mounting hole, and the spray head extends out of the mounting hole.
Preferably, the inner cavity of the spray head is arranged in an inverted cone shape.
Preferably, the spray head is externally connected with the water pump through one or more water pipes.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention avoids the scratch of the supporting surface by adopting the contact type supporting structure supported by the balls.
2. The invention adopts the spray head to spray liquid to support the workpiece in a non-contact way, thereby reducing the indentation of the supporting surface of the workpiece.
3. The ultrasonic thickness measuring sensor is used for measuring the thickness of the thin-wall part, so that the real-time monitoring of the wall thickness is realized.
4. According to the invention, the eddy current sensor is adopted to measure the distance between the thin-wall part and the supporting device, so that a liquid area with a certain thickness is formed to ensure the liquid supporting pressure.
5. The invention provides enough supporting force by adopting a fluid-solid mixed supporting mode.
6. The invention realizes variable-rigidity active vibration suppression by adjusting the pressure of the air cylinder and the pressure of liquid.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic overall structure diagram of a mirror-image milling variable-rigidity fluid-solid hybrid follow-up supporting device for a thin-wall part;
FIG. 2 is a schematic view of a housing assembly of the mirror-image milling variable-stiffness fluid-solid hybrid follow-up supporting device for the thin-wall part;
FIG. 3 is a schematic view of a contact type support assembly of a mirror-image milling variable-stiffness fluid-solid hybrid follow-up support device for a thin-wall part;
FIG. 4 is a schematic view of a liquid flow non-contact measurement support assembly of a thin-wall part mirror-image milling variable-rigidity liquid-solid hybrid follow-up support device.
The figures show that:
1-housing Assembly
2-contact support assembly
3-liquid flow non-contact measurement support assembly
4-workpiece
5-support housing
6-front end cover plate
7-Mount component
8-ball support head
9-support cylinder
10-nozzle
11-ultrasonic thickness measuring sensor
12-electric eddy current sensor
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 to 4, the wall member mirror-image milling variable-stiffness fluid-solid hybrid follow-up supporting device provided by the invention comprises a housing assembly 1, a contact type supporting assembly 2 and a fluid non-contact type measuring supporting assembly 3;
the housing assembly 1 is located outside the device and is used to protect and support and secure the internal mechanisms of the device. The shell assembly 1 comprises a supporting shell 5 and a front end cover plate 6, wherein a mounting hole is formed in the supporting shell 5 and used for being connected with a driving machine through threads, the front end cover plate 6 is in contact with the contact type supporting assembly 2, and the contact type supporting assembly 2 is fixed on the shell assembly 1 in a threaded connection mode.
The front end of the contact type supporting component 2 is a ball supporting head 8, extends out of the shell component 1, and supports the workpiece 4 in a contact manner, the top of the ball supporting head 8 is a ball, the ball is attached to the surface of the workpiece 4, and the workpiece 4 is locally supported in machining, so that the vibration and deformation of a thin-wall part are reduced, and the scratch on the surface of the workpiece 4 is reduced. The rear end of the contact support assembly 2 is a support cylinder 9, and the support cylinder 9 is fixed on the mounting seat part 7 to provide a support force for driving the ball support head 8. The ball support head 8 is connected with the support cylinder 9, and is in telescopic motion along with the support cylinder 9 and is in rolling contact with the surface of the workpiece 4. The ball support heads 8 and the support cylinders 9 are in one-to-one correspondence and can be independently controlled, and are uniformly distributed by taking the spray head 10 as a center. The pressure of the supporting cylinder 9 is changed, so that the jacking pressure of the ball supporting head 8 and the workpiece 4 is changed, the rigidity of the system is changed, and the active vibration suppression of the thin-wall part is realized. The mount member 7 is connected with the housing assembly 1.
The liquid flow non-contact type measurement supporting assembly 3 comprises a spray head 10, an ultrasonic thickness measuring sensor 11 and an eddy current sensor 12; the spray head 10 is located in the middle, the spray head 10 is used for supporting the workpiece 4 in a non-contact mode through spraying liquid serving as a coupling agent, the ultrasonic thickness measuring sensor 11 is located inside the spray head 10, the liquid sprayed by the spray head 10 is used as the coupling agent, and the thickness of the workpiece 4 is measured through the signal difference returned by the front surface and the rear surface of the workpiece 4. And feeding the measured thickness back to a control system in real time to realize the wall thickness closed-loop control of the thin-wall part. The eddy current sensors 12 are evenly distributed around the sprinkler head 10 with the front end exposed from the device. The eddy current sensor 12 is used for measuring the distance between the thin-wall part and the supporting device, so that a liquid area with a certain thickness is formed to ensure the liquid supporting pressure. The liquid in the shower nozzle 10 is provided through one or more water pipes by external water pump, and the inner chamber of shower nozzle 10 is approximate for the back taper, plays the effect of assembling rivers increase water pressure. The spray head 10 supports the workpiece 4 in a non-contact way by spraying liquid, so that the supporting force is increased, and the surface of the workpiece 4 is prevented from being indented or scratched. The supporting force and the supporting rigidity of the liquid flow can be changed by changing the water pressure, and the active vibration suppression of the thin-wall part is realized.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A thin-wall part mirror-image milling rigidity-variable flow-solid hybrid follow-up supporting device is characterized by comprising a shell assembly, a contact type supporting assembly and a liquid flow non-contact type measuring supporting assembly, wherein:
the shell component is used for protecting, fixing and supporting the contact type supporting component and the liquid flow non-contact type measurement supporting component;
the contact type supporting assembly comprises a ball supporting head, and the ball supporting head is used for carrying out contact type supporting on the workpiece;
the liquid flow non-contact type measurement supporting assembly comprises a spray head, and the spray head carries out non-contact type supporting on a workpiece.
2. The mirror-image milling variable-stiffness fluid-solid hybrid servo support device of claim 1, wherein the contact support assembly further comprises a mount component and a support cylinder, wherein:
the mounting seat component is connected with the shell component, and the supporting cylinder is mounted on the mounting seat component and drives the ball supporting head to move in a telescopic mode.
3. The mirror-image milling variable-stiffness fluid-solid hybrid servo support device of claim 1, wherein the fluid flow non-contact measurement support assembly further comprises an ultrasonic thickness measurement sensor and an eddy current sensor, wherein:
the ultrasonic thickness measuring sensor is positioned inside the spray head and is used for measuring the thickness of the workpiece;
the eddy current sensors are distributed in the circumferential direction of the spray head and measure the distance between the spray head and the workpiece.
4. The mirror-image milling variable-stiffness fluid-solid hybrid follow-up support device for the thin-wall part according to claim 1, wherein the housing assembly comprises a support housing and a front end cover plate, the support housing is provided with a mounting hole for connecting with an external driving device, and the front end cover plate is in contact with the contact type support assembly and fixes the contact type support assembly on the housing assembly.
5. The mirror-image milling variable-rigidity fluid-solid hybrid servo support device for the thin-walled workpiece according to claim 1, wherein balls are arranged at the top end of the ball support head, and can be attached to the surface of the workpiece to support the workpiece.
6. The mirror-image milling variable-rigidity fluid-solid hybrid follow-up support device for the thin-wall part according to claim 2, wherein a plurality of ball support heads are arranged and distributed in the circumferential direction of the spray head.
7. A thin-wall part mirror image milling variable-rigidity fluid-solid hybrid servo support device as claimed in claim 6, wherein each ball support head is correspondingly provided with a support cylinder, and each ball support head is independently controlled.
8. The mirror-image milling variable-rigidity fluid-solid hybrid servo support device for the thin-walled workpiece according to claim 4, wherein a mounting hole is formed in the middle of the front end cover plate, and the spray head extends out of the mounting hole.
9. The mirror-image milling variable-rigidity fluid-solid mixing follow-up supporting device for the thin-wall part according to claim 1, wherein an inner cavity of the spray head is arranged to be in an inverted cone shape.
10. The mirror-image milling variable-rigidity fluid-solid mixing follow-up supporting device for the thin-wall part according to claim 1, wherein the spray head is externally connected with a water pump through one or more water pipes.
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| CN201911180645.7A CN111299676B (en) | 2019-11-27 | 2019-11-27 | Mirror image milling variable-rigidity fluid-solid hybrid follow-up supporting device for thin-wall part |
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| CN201911180645.7A CN111299676B (en) | 2019-11-27 | 2019-11-27 | Mirror image milling variable-rigidity fluid-solid hybrid follow-up supporting device for thin-wall part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787219A (en) * | 2021-08-26 | 2021-12-14 | 上海交通大学 | Non-contact follow-up auxiliary supporting and vibration damping device based on eddy current effect |
| CN114682832A (en) * | 2022-05-07 | 2022-07-01 | 无锡凯斯特铸业有限公司 | Nickel-based superalloy milling device and milling method |
| CN115091224A (en) * | 2022-08-05 | 2022-09-23 | 上海交通大学 | Jet flow active vibration suppression device and method for mirror image milling of thin-walled workpiece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132773A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Vacuum-suction-type support jig, plate-shaped workpiece machining method using same, and machined workpiece |
| CN104440158A (en) * | 2014-11-12 | 2015-03-25 | 南京航空航天大学 | Method and equipment for milling and shoring aircraft skin in mirror image mode |
| CN105855926A (en) * | 2016-05-24 | 2016-08-17 | 大连理工大学 | Support device for mirror-image milling for aircraft skin |
| CN106392719A (en) * | 2016-10-14 | 2017-02-15 | 天津大学 | Pneumatic type variable-rigidity flexible mirror-image milling supporting head for measuring thickness in real time |
| CN109676420A (en) * | 2019-02-19 | 2019-04-26 | 大连理工大学 | A kind of large thin-wall element support device and method |
| CN109855577A (en) * | 2019-04-01 | 2019-06-07 | 大连理工大学 | Coupling gap self-adapting regulation method in the non-contact scanning thickness measuring of ultrasound |
-
2019
- 2019-11-27 CN CN201911180645.7A patent/CN111299676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012132773A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Vacuum-suction-type support jig, plate-shaped workpiece machining method using same, and machined workpiece |
| CN104440158A (en) * | 2014-11-12 | 2015-03-25 | 南京航空航天大学 | Method and equipment for milling and shoring aircraft skin in mirror image mode |
| CN105855926A (en) * | 2016-05-24 | 2016-08-17 | 大连理工大学 | Support device for mirror-image milling for aircraft skin |
| CN106392719A (en) * | 2016-10-14 | 2017-02-15 | 天津大学 | Pneumatic type variable-rigidity flexible mirror-image milling supporting head for measuring thickness in real time |
| CN109676420A (en) * | 2019-02-19 | 2019-04-26 | 大连理工大学 | A kind of large thin-wall element support device and method |
| CN109855577A (en) * | 2019-04-01 | 2019-06-07 | 大连理工大学 | Coupling gap self-adapting regulation method in the non-contact scanning thickness measuring of ultrasound |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787219A (en) * | 2021-08-26 | 2021-12-14 | 上海交通大学 | Non-contact follow-up auxiliary supporting and vibration damping device based on eddy current effect |
| CN113787219B (en) * | 2021-08-26 | 2024-03-26 | 上海交通大学 | Non-contact follow-up auxiliary supporting and vibration damping device based on eddy current effect |
| CN114682832A (en) * | 2022-05-07 | 2022-07-01 | 无锡凯斯特铸业有限公司 | Nickel-based superalloy milling device and milling method |
| CN114682832B (en) * | 2022-05-07 | 2023-05-12 | 无锡凯斯特铸业有限公司 | Nickel-based superalloy milling device and milling method |
| CN115091224A (en) * | 2022-08-05 | 2022-09-23 | 上海交通大学 | Jet flow active vibration suppression device and method for mirror image milling of thin-walled workpiece |
| CN115091224B (en) * | 2022-08-05 | 2024-05-10 | 上海交通大学 | Jet flow active vibration suppression device and method for mirror milling of thin-wall part |
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