CN216940170U - Taylor vortex abrasive flow deburring device - Google Patents
Taylor vortex abrasive flow deburring device Download PDFInfo
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- CN216940170U CN216940170U CN202120679378.4U CN202120679378U CN216940170U CN 216940170 U CN216940170 U CN 216940170U CN 202120679378 U CN202120679378 U CN 202120679378U CN 216940170 U CN216940170 U CN 216940170U
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- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The utility model provides a Taylor vortex abrasive flow deburring device which comprises a clamp device, a deburring device and a deburring device, wherein the clamp device is used for clamping a workpiece; the clamp driving device is used for driving the clamp device to rotate; the abrasive nozzle is coaxial with the clamp device, a plurality of circles of small holes are uniformly distributed on the abrasive nozzle along the circumferential direction, the axial distance between every two circles of small holes is 6-14 mm, and 2-5 small holes are uniformly distributed in every circle and used for spraying liquid abrasive towards the workpiece; and the nozzle driving device is used for driving the abrasive nozzle to rotate and advance and retreat. The deburring device has the advantages of simple structure, simple process, and capability of efficiently and high-quality deburring on the inner wall of the thin-wall workpiece.
Description
Technical Field
The utility model relates to the technical field of deburring, in particular to a Taylor vortex abrasive flow deburring device.
Background
In the industries of aviation, aerospace, automobiles, molds, instruments and meters and the like, burrs are likely to be generated in the manufacturing and processing process of parts. In order to ensure the processing quality of parts, improve the service performance and prolong the service life of the parts, a deburring process needs to be added. According to statistical data analysis, the deburring process can cause the increase of the processing time and the production cost of the parts, the deburring working time accounts for about 5-13% of the total working time of the parts, the production efficiency of the parts is severely limited, and the economic cost of deburring the precise parts is usually up to 30% of the total cost of the parts.
As shown in figure 1, in aerospace equipment, some complex-profile thin-wall parts are complex in structure, the wall thickness is small and is only 0.8-5.7 mm, the diameter-thickness ratio exceeds 100, the parts are easy to deform under stress, thousands of tiny holes are distributed on the thin wall, the diameter of each small hole is 1.3-2.8 mm, and protruding structures are arranged around part of the small holes, so that the difficulty in removing burrs at the edges of the small holes is increased. The presence of burrs affects not only the precision of the part, but also the reliability of the complete machine of the part. When the parts with burrs are installed and used, mechanical failure can be caused, and even more, serious safety accidents can be caused, and then endless diseases can be caused. Therefore, for deburring of the tiny group holes of the complex thin-wall parts, the method is of great importance in exploring a new removing mechanism and a high-efficiency and high-precision deburring processing method, and has important theoretical guidance significance and engineering application value for improving the manufacturing level in the aerospace equipment field in China.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device and a method for removing burrs of a Taylor vortex abrasive flow, which are used for solving the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a taylor vortex abrasive flow deburring apparatus comprising:
The clamp device is used for clamping the workpiece;
the clamp driving device is used for driving the clamp device to rotate;
the abrasive nozzle is coaxial with the clamp device, a plurality of circles of small holes are uniformly distributed on the abrasive nozzle along the circumferential direction, the axial distance between every two circles of small holes is 6-14 mm, and 2-5 small holes are uniformly distributed in every circle and used for spraying liquid abrasive towards the workpiece;
and the nozzle driving device is used for driving the abrasive nozzle to rotate and advance and retreat.
Furthermore, the clamp device comprises two semicircular clamping units which are symmetrically arranged, and the two clamping units clamp the workpiece when being folded.
Further, the diameter of the small hole is 1.5-2.5 mm.
Further, the rotating speed of the clamp device and the workpiece is 20-100rad/s, the rotating speed of the abrasive nozzle is 5-20rad/s, the rotating directions of the clamp device and the abrasive nozzle are opposite, and the feeding speed of liquid abrasive in the abrasive nozzle is 2-6 m/s.
The utility model also provides a method for deburring the Taylor vortex abrasive flow, which comprises the following steps:
a. clamping the workpiece by a clamp device;
b. the clamp device is driven to rotate, and the clamp device drives the workpiece to rotate;
c. the abrasive nozzle rotates and sprays liquid abrasive towards the inside of the workpiece, so that the inside and the outside of the workpiece are filled with the liquid abrasive;
d. The abrasive nozzle advances, and the liquid abrasive in the workpiece and the workpiece rotate reversely to generate annular Taylor vortexes;
e. and the liquid abrasive and the burrs on the inner wall of the workpiece are subjected to shearing friction under the action of the annular Taylor vortex, so that the burrs are removed.
Further, the step d of advancing the abrasive nozzle includes advancing the abrasive nozzle in an axial direction thereof.
Furthermore, a plurality of circles of small holes are uniformly distributed on the abrasive nozzle along the circumferential direction, the axial distance between every two circles of small holes is 6-14 mm, 2-5 small holes are uniformly distributed in every circle and used for spraying liquid-state abrasive towards the workpiece, and the diameter of each small hole is 1.5-2.5 mm.
Further, the rotating speed of the clamp device and the workpiece is 20-100rad/s, the rotating speed of the abrasive nozzle is 5-20rad/s, and the rotating directions of the clamp device and the abrasive nozzle are opposite; the feeding speed of the liquid abrasive in the abrasive nozzle is 2-6 m/s.
Further, the rotating speed of the clamp device and the workpiece is 20rad/s, and the rotating speed of the abrasive nozzle is 20 rad/s.
Further, the driving the clamping device and the workpiece to rotate in the step b includes: and clamping the clamp device through a machine tool workbench, and driving the clamp device to rotate.
The beneficial effects of the utility model are:
the Taylor vortex abrasive flow deburring method has the advantages of simple process, and high-efficiency and high-quality deburring of the inner wall of the thin-wall workpiece.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a workpiece according to the background art of the present invention;
FIG. 2 is a schematic diagram of a simulation process model of the Taylor vortex abrasive flow deburring method of the present invention;
FIG. 3a is a schematic diagram illustrating the influence of the rotational speed of the workpiece on the wall shear stress according to an embodiment of the present invention;
FIG. 3b is a schematic diagram illustrating the influence of the inlet flow rate of the abrasive jet nozzle on the shear stress of the inner wall surface of the workpiece according to an embodiment of the present invention;
labeled in the figure as:
the grinding device comprises a workpiece 1, an abrasive nozzle 2, small holes 21, a liquid abrasive 3 and an annular Taylor vortex 4.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Please refer to fig. 2 to 3:
a taylor vortex abrasive flow deburring apparatus comprising:
the fixture device is used for clamping the workpiece 1;
the clamp driving device is used for driving the clamp device to rotate;
the abrasive nozzle 2 is coaxial with the fixture device, a plurality of circles of small holes 21 are uniformly distributed on the abrasive nozzle 2 along the circumferential direction, the axial distance between every two circles of small holes 21 is 6-14 mm, and 2-5 small holes 21 are uniformly distributed on each circle and used for spraying liquid abrasive towards the workpiece 1;
and a nozzle driving device for driving the abrasive nozzle 2 to rotate and advance and retreat.
Specifically, the clamp device comprises two semicircular clamping units which are symmetrically arranged, and the two clamping units clamp the workpiece when being folded. In other alternative embodiments of the present invention, the clamping device may also include a plurality of arc-shaped clamping units uniformly distributed along the circumferential direction, and the plurality of arc-shaped clamping units clamp the workpiece when being closed.
Further, the diameter of the small hole is 1.5-2.5 mm.
The rotating speed of the fixture device and the workpiece is 20-100rad/s, the rotating speed of the abrasive nozzle is 5-20rad/s, the rotating directions of the fixture device and the abrasive nozzle are opposite, and the feeding speed of liquid abrasive in the abrasive nozzle is 2-6 m/s.
The Taylor vortex abrasive flow deburring device is simple in structure and convenient to operate, and can efficiently and high-quality deburr on the inner wall of a thin-wall workpiece.
The utility model also provides a Taylor vortex abrasive flow deburring method, which comprises the following steps:
a. clamping the workpiece 1 by a clamping device (not shown);
b. the clamp device is driven to rotate, and the clamp device drives the workpiece 1 to rotate;
c. the abrasive nozzle 2 rotates and sprays liquid abrasive 3 into the workpiece 1, so that the inside and the outside of the workpiece 1 are filled with the liquid abrasive 3;
d. the abrasive nozzle 2 advances, and the liquid abrasive 3 in the workpiece 1 rotates in the reverse direction of the workpiece 1 to generate an annular Taylor vortex 4;
e. and the liquid abrasive 3 and the burrs on the inner wall of the workpiece 1 are subjected to shearing friction under the action of the annular Taylor vortex 4, so that the burrs are removed.
Specifically, the step d of advancing the abrasive nozzle 2 includes advancing the abrasive nozzle 2 along the axial direction thereof.
A plurality of circles of small holes 21 are uniformly distributed on the abrasive nozzle 2 along the axial direction, the axial distance between every two circles of small holes 21 is 6-14 mm, and 2-5 small holes are uniformly distributed on every circle; the diameter of the small hole 21 is 1.5-2.5 mm. As a preferred embodiment of the utility model, the diameter of the small holes 21 is 2mm, and 3 small holes are provided per circle.
The workpiece 1 is a revolution body part, the clamp device comprises at least two clamping units arranged along the circumferential direction, and the workpiece 1 is firmly clamped when the at least two clamping units are folded.
The rotating speed of the fixture device and the workpiece is 20-100rad/s, the rotating speed of the abrasive nozzle 2 is 5-20rad/s, and the rotating directions of the fixture device and the abrasive nozzle are opposite. The feeding speed of the liquid abrasive in the abrasive nozzle is 2-6 m/s.
As a preferred embodiment of the utility model, the rotating speed of the fixture device and the workpiece is 20rad/s, the rotating speed of the abrasive nozzle is 20rad/s, and the feeding speed of the liquid abrasive in the abrasive nozzle is 4 m/s.
When the flow velocity of the liquid grinding material 3 is 0m/s, the laminar effect of the liquid grinding material 3 is stronger when the grinding material nozzle 2 and the workpiece 1 rotate, effective Taylor vortex cannot be generated, a high-speed flowing area is concentrated near the wall surface of the workpiece, but the grinding material viscosity is smaller, the strength of the vortex near the wall surface is weaker, the corresponding shear stress of the wall surface is also smaller, specifically less than 50Pa, and the multi-direction and multi-strength powerful impact on burrs is not favorably generated; when the flow velocity of the liquid abrasive 3 in the abrasive nozzle 2 is 5m/s, a strong turbulent vortex region is generated between the workpiece 1 and the abrasive nozzle 2 to form an effective annular Taylor vortex 4, the wall surface shear stress is also improved, and the burrs on the inner wall of the workpiece can be impacted in multiple directions and in multiple strengths, so that the burrs are removed.
Further, the driving the clamping device and the workpiece 1 to rotate in the step b includes: and clamping the clamp device through a machine tool workbench, and driving the clamp device to rotate.
FIG. 3a is a schematic diagram showing the influence of the rotation speed of the workpiece 2 on the wall shear stress, including the case where the rotation speed of the abrasive nozzle 2 is-20 rad/s and the rotation speed of the abrasive nozzle 2 is 5 m/s.
FIG. 3b is a schematic diagram showing the influence of the inlet flow rate of the abrasive nozzle 2 on the shear stress of the inner wall surface of the workpiece, including a workpiece rotation speed of 20rad/s and an abrasive nozzle 2 rotation speed of-20 rad/s.
As can be seen from fig. 3a and 3b, the shearing stress of the inner wall surface of the workpiece 2 increases with the increase of the rotation speed of the workpiece 1 and the increase of the flow velocity of the liquid abrasive 3 at the entrance of the abrasive nozzle 2, which is beneficial to increase the friction force between the abrasive flow and the burr and is convenient for removing the burr, but in order to prevent the deformation influence of the larger shearing stress of the workpiece on the thin-wall workpiece and to take the process economy and other considerations into consideration, appropriate process parameters need to be selected for removing the burr. When the length of the burr is 0.3mm and the width is 2.0mm, the maximum equivalent stress of simulated burr removal is 1700MPa, the required shear stress of the wall surface of the workpiece is 689Pa, the inlet flow rate of the abrasive nozzle is 3.5m/s, and the burr can be effectively removed when the workpiece and the tool rotate at the rotating speed of 20rad/s and in different directions.
Tiny holes are machined in the surface of the GH4169 workpiece material in a mechanical machining mode, and burrs on the edges of the tiny holes are clearly visible. The workpiece 1 and the abrasive nozzle 2 were rotated in opposite directions at a rotational speed of 20rad/s and the nozzle abrasive flow rate was 4m/s to conduct the deburring experiment. By adopting the method, burrs at the edge of the small hole can be effectively removed, the roundness of the small hole and the surface appearance of a workpiece can be improved, and Ra is increased to 1.010 mu m from 3.061 mu m before deburring.
The Taylor vortex abrasive flow deburring method has the advantages of simple process, and high-efficiency and high-quality deburring of the inner wall of the thin-wall workpiece.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are provided only for illustrating the technical concepts and features of the present invention, and the purpose of the present invention is to provide those skilled in the art with the understanding of the present invention and to implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (5)
1. A Taylor vortex abrasive flow deburring device comprising:
the clamp device is used for clamping the workpiece;
the clamp driving device is used for driving the clamp device to rotate;
the grinding material nozzle is coaxial with the fixture device, a plurality of circles of small holes are uniformly distributed in the grinding material nozzle along the circumferential direction, the axial distance between every two circles of small holes is 6-14 mm, and 2-5 small holes are uniformly distributed in every circle and used for spraying liquid grinding materials towards the workpiece;
and the nozzle driving device is used for driving the abrasive nozzle to rotate and advance and retreat.
2. The taylor vortex abrasive flow deburring apparatus of claim 1 wherein: the clamp device comprises two semicircular clamping units which are symmetrically arranged, and the two clamping units clamp the workpiece when being folded.
3. The taylor vortex abrasive flow deburring apparatus of claim 1 wherein: the diameter of the small hole is 1.5-2.5 mm.
4. The taylor vortex abrasive flow deburring apparatus of claim 1 wherein: the rotating speed of the fixture device and the workpiece is 20-100rad/s, the rotating speed of the abrasive nozzle is 5-20rad/s, the rotating directions of the fixture device and the abrasive nozzle are opposite, and the feeding speed of the liquid abrasive in the abrasive nozzle is 2-6 m/s.
5. The taylor vortex abrasive flow deburring apparatus of claim 4 wherein: the rotating speed of the fixture device and the workpiece is 20rad/s, and the rotating speed of the abrasive nozzle is 20 rad/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120679378.4U CN216940170U (en) | 2021-04-02 | 2021-04-02 | Taylor vortex abrasive flow deburring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120679378.4U CN216940170U (en) | 2021-04-02 | 2021-04-02 | Taylor vortex abrasive flow deburring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216940170U true CN216940170U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120679378.4U Expired - Fee Related CN216940170U (en) | 2021-04-02 | 2021-04-02 | Taylor vortex abrasive flow deburring device |
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| Country | Link |
|---|---|
| CN (1) | CN216940170U (en) |
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2021
- 2021-04-02 CN CN202120679378.4U patent/CN216940170U/en not_active Expired - Fee Related
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Granted publication date: 20220712 |