CN110842749A - Combined closed cavity vibration type barreling and polishing device and method for processing blade surface - Google Patents
Combined closed cavity vibration type barreling and polishing device and method for processing blade surface Download PDFInfo
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- CN110842749A CN110842749A CN201911003324.XA CN201911003324A CN110842749A CN 110842749 A CN110842749 A CN 110842749A CN 201911003324 A CN201911003324 A CN 201911003324A CN 110842749 A CN110842749 A CN 110842749A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
- B24B31/0224—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the workpieces being fitted on a support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
- B24B31/027—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels with additional oscillating movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a combined closed cavity vibration type tumbling and polishing device and a method thereof for processing the surface of a blade, belonging to the technical field of blade surface polishing processing.A processed blade is fixed in a container with a special closed cavity matched with the shape of the blade to form a combined closed cavity; a certain amount of rolling and polishing grinding blocks and liquid media are filled in a closed cavity in advance; the rolling polishing grinding block and the processed blade sealed in the container rotate with the container at low speed and simultaneously make amplitude togetherASum frequencyfThe rolling polishing grinding block preassembled in the container and the processed surface of the blade generate certain relative motion and acting force reasonablyThe technological parameters are regulated and controlled, high-efficiency and consistent finishing processing of the high-performance blades is realized, and the requirements of the high-performance blades on finished manufacture, repair and batch production are met.
Description
Technical Field
The invention belongs to the technical field of blade surface finishing, and particularly relates to a combined closed cavity vibration type tumbling and finishing device and a method for blade surface finishing.
Background
Aircraft engines are complex thermodynamic machines that reliably operate for long periods of time in harsh environments of high temperature, high pressure, high speed rotation, and are typically knowledge and technology intensive products. The blade, as a core high-performance part of an aircraft engine, is the heaviest in the manufacturing of aircraft engines, occupies about 40% of the workload, and the surface quality of the blade directly influences the service performance and the service life of the engine. The existing blade mainly depends on manual polishing, abrasive belt polishing and the like to improve the surface quality, but the problems of uneven removal amount, inconsistent surface roughness and the like easily occur in the manual polishing, the requirement on the profile precision is difficult to meet, the environment is severe, and the processing efficiency is low; in the process of abrasive belt polishing, an abrasive belt or a polishing wheel is easy to wear, and the consistency of blade parts in processing is difficult to ensure. The abrasive particle flow finishing process is adopted to polish the blades at home and abroad, but the clamp is difficult to design, high in cost, easy to cause blade deformation, uneven thickness and the like. The tai yuan university provides a blade surface barreling and polishing processing method (ZL 201510433640.6) adopting a distributed protection measure, which can reduce the roughness value of the blade surface and improve the surface texture on the premise of not damaging the original shape and size precision of the blade, but still has the defects of good processing effect of the blade back and poor processing effect of the blade basin.
Disclosure of Invention
The invention provides a combined closed cavity vibration type tumbling and polishing device and a method thereof for processing the surface of a blade, aiming at combining the blade and a container with a special-shaped inner cavity to form a closed cavity in a certain mode, realizing the high-efficiency and consistent polishing processing of the high-performance blade by reasonably regulating and controlling the spatial direction and processing parameters of the blade and meeting the requirements of the finished product manufacture, repair and batch production.
In order to achieve the purpose, the invention provides a combined closed cavity vibration type barreling and polishing device for processing the surface of a blade, which comprises a vibration platform, a bracket, a supporting shaft, a bearing, a speed regulating motor, a small belt wheel, a flat belt, a large belt wheel, a rotary platform and a processing assembly, wherein the vibration platform is arranged on the bracket; the vibration platform is provided with a bracket, a support shaft is arranged on the bracket through a bearing, and the support shaft is fixedly connected with a large belt wheel and a rotary platform; the small belt wheel is connected with the speed regulating motor and rotates along with the speed regulating motor; the small belt wheel is connected with the large belt wheel through a flat belt; a plurality of processing assemblies are fixed on the rotary platform along the circumferential direction; the processing assembly comprises a container, a processing medium and a clamp; the container adopts a split structure and consists of a container body and a container cover; the processing medium is a mixture consisting of a barrel polishing grinding block and a liquid medium; the fixture is fixed on the container cover and used for clamping the processed blade; the shape of the inner cavity of the container body is a special-shaped inner cavity matched with the shape of the processed blade, and after the processed blade is fixed on the clamp, the processed blade, the container body and the container cover form a combined closed cavity.
The number of the processing components isnThe number of the main components is one,nas determined by the formula (1),
wherein:ffrequency of the vibration table, Hz;Ais the amplitude of the vibration platform, mm;the total mass of the moving coil of the vibration platform and the horizontal sliding table is kg;mkg for the mass of the processing assembly;
the total mass of the bracket, the large belt wheel, the supporting shaft, the bearing and the rotary platform is kg;Fis the excitation force of the vibration platform, N.
Amplitude of the vibration tableAAt 3mm-5mm, frequencyfAt 30Hz-100 Hz.
The rotating speed of the rotary platform is 1r/min-30 r/min.
The loading amount of the rolling polishing grinding block is 50-80%.
The container body and the container cover are connected by a double-end stud.
The bracket, the large belt wheel, the supporting shaft, the rotary platform, the container body and the container cover are made of silicon-magnesium alloy, aluminum-magnesium alloy or carbon fiber materials.
The processed blade is an aircraft engine blade.
The invention also provides a processing method of the combined closed cavity vibration type barreling and polishing device for processing the surface of the blade, which comprises the following steps:
s1, fixing the processed blade on a clamp;
s2, adding a processing medium containing a barrel polishing grinding block and a liquid medium into the container body, covering a container cover, and sealing the container;
and S3, fixing the mounted processing assembly on a rotary platform.
S4, repeating the steps S1-S3 untilnAll the processing assemblies are fixed on the rotary platform.
S5, adjusting the rotating speed of the speed regulating motor to enable the rotating speed of the rotary platform to be 1r/min-30 r/min;
s6, adjusting the amplitude and frequency of the vibration platform: the amplitude is 3mm-5mm, and the frequency is 30Hz-100 Hz;
and S7, starting the speed regulating motor and the vibration platform, making the container rotate along with the speed regulating motor, the small belt wheel, the large belt wheel and the rotary platform, and horizontally vibrating along with the vibration platform at a preset amplitude and frequency to finish the surface finishing of the processed blade.
The processing method also comprises the following steps:
s8, stopping the speed regulating motor and the vibration platform after processing for a preset time;
s9, taking down the processing assembly from the rotary platform;
s10, the container cover is taken down, and the blade is taken out from the clamp.
The invention has the beneficial effects that:
the invention provides a combined closed cavity vibration type tumbling and polishing processing device and a method thereof for processing the surface of a blade aiming at the current polishing processing situation of the surface of the blade, namely, the blade is fixed in a container with an inner cavity with a special shape through a clamp to form a combined closed cavity; the spatial orientation of the blades is regulated and controlled through the rotary motion of the container; the uniform processing of the surface of the blade is realized through the simultaneous vibration of the blade and the container, the problem of uneven processing of the blade and the blade back in the traditional processing is avoided, the surface integrity of the blade is comprehensively improved, and the service performance and the service life of the blade and the whole machine are improved. The invention can reduce the roughness value of the surface of the blade and improve the surface texture on the premise of ensuring the processing precision and not destroying the original shape and size precision of the blade, thereby improving the surface integrity of the blade, improving the processing consistency of a blade basin and a blade back, effectively improving the processing efficiency and reducing the processing cost.
Drawings
Fig. 1 is a front view of a combined closed cavity vibration type barreling finishing device for processing the surface of a blade provided by embodiment 1 of the invention;
FIG. 2 is a cross-sectional view taken in the direction A-A of the processing apparatus shown in FIG. 1;
fig. 3 is a sectional view of a container body.
In the figure: 1-a vibration platform; 2-speed regulating motor; 3-small belt wheel; 4-flat belt; 5-large belt wheel; 6-a rotary platform; 7-container body; 8-a processing medium; 9-processed blade; 10-a container lid; 11-a clamp; 12-a scaffold; 13-supporting the shaft; 14-bearing.
Detailed Description
Example 1
The embodiment provides a combined closed cavity vibration type barreling finishing processing device for processing the surface of a blade, which comprises a vibration platform 1 (manufactured by Suzhou Su test instruments Co., Ltd. DC-5000-50), a bracket 12, a supporting shaft 13, a bearing 14, a speed regulating motor 2, a small belt pulley 3, a flat belt 4, a large belt pulley 5, a rotary platform 6 and a processing assembly; a support 12 is arranged on the vibration platform 1, a support shaft 13 is arranged on the support 12 through a bearing 14, and the support shaft 13 is fixedly connected with the large belt wheel 5 and the rotary platform 6; the small belt wheel 3 is connected with the speed regulating motor 2 and rotates along with the speed regulating motor 2; the small belt wheel 3 is connected with the large belt wheel 5 through a flat belt 4; a plurality of machining assemblies are fixed on the rotary platform 6 along the circumferential direction; the processing assembly comprises a container, a processing medium 8 and a clamp 11; the container adopts a split structure and consists of a container body 7 and a container cover 10; the processing medium 8 is a mixture of a barrel polishing grinding block and a liquid medium; the clamp 11 is fixed on the container cover 10 and used for clamping the processed blade 9; the shape of the inner cavity of the container body 7 is a special-shaped inner cavity matched with the shape of the processed blade 9, and after the processed blade 9 is fixed on a clamp 11, the processed blade 9, the container body 7 and a container cover 10 form a combined closed cavity.
Before processing, fixing the processed blade 9 on a clamp 11, filling a certain amount of processing medium 8 into a container body 7, then covering a container cover 10, sealing the container, and mounting the container on a rotary platform 6; the processing medium 8 and the blade 9 are oscillated together with the vesselASum frequencyfThe rolling polishing grinding block preassembled in the container and the processed surface of the processed blade 9 generate certain relative motion and acting force, so that the efficient and consistent finishing processing of the surface of the processed blade 9 is realized.
The number of the processing components isnThe number of the main components is one,nas determined by the formula (1),
wherein:ffrequency of the vibration table, Hz;Ais the amplitude of the vibration platform, mm;min order to process the mass of the assembly, kg,
for the total mass of moving coil and horizontal sliding table of vibration platformAmount, kg;
the total mass of the bracket, the large belt wheel, the supporting shaft, the bearing and the rotary platform is kg;Fis the excitation force of the vibration platform, N.
Amplitude of the vibration table 1AAt 3mm-5mm, frequencyfAt 30Hz-100 Hz.
The rotating speed of the rotary platform 6 is 1r/min-30 r/min.
The loading amount of the rolling polishing grinding block is 50-80%.
The container body 7 and the container lid 10 are connected by a stud.
The bracket 12, the large belt wheel 5, the supporting shaft 13, the rotary platform 6, the container body 7 and the container cover 10 are made of silicon-magnesium alloy, aluminum-magnesium alloy or carbon fiber materials.
The machined blade 9 is an aircraft engine blade.
Example 2
This embodiment provides a method for machining a blade 9 to be machined, which is a rolled blade, using the apparatus described in embodiment 1, comprising the steps of,
s1, fixing the processed blade 9 on the clamp 11;
s2, adding a processing medium 8 containing 80% of the roll-polishing grinding block and a small amount of liquid medium into the container body 7, and sealing the container;
s3, fixing the mounted processing assembly on a rotary platform 6;
and S4, repeating the steps S1-S3 until all the processed assemblies are fixed on the rotary platform 6.
S5, adjusting the rotating speed of the speed regulating motor 2 to make the rotating speed of the rotary platform 6 be 30 r/min;
s6, adjusting the amplitude and frequency of the vibration platform 1; the amplitude is 3mm, and the frequency is 100 Hz;
s7, starting the speed regulating motor 2 and the vibration platform 1, making the container rotate along with the speed regulating motor 2, the small belt pulley 3, the large belt pulley 5 and the rotary platform 6, and horizontally vibrating along with the vibration platform 1 at the amplitude of 3mm and the frequency of 100Hz to finish the finishing processing of the surface of the processed blade 9;
s8, after processing for 10min, stopping the speed regulating motor 2 and the vibration platform 1;
s9, taking down the processing assembly from the rotary platform 6;
s10, the container lid 10 is removed, and the blade 9 to be processed is taken out from the jig 11.
The processing effect is as follows:
after adopting the combined closed cavity vibration type tumbling and polishing, the size precision and the form and position tolerance of the blade profile meet the requirements of drawings, and the surface roughness of the bladeRaThe value is reduced from 1.02 mu m to 0.28 mu m, the blade profile knife mark is removed, the surface texture is greatly improved, and the finishing processing target is realized.
Example 3
This embodiment provides a method for machining a blade 9 of a high temperature alloy using the apparatus of embodiment 1, comprising the steps of,
s1, fixing the processed blade 9 on the clamp 11;
s2, adding a processing medium 8 containing a roll-polishing grinding block with the loading amount of 60% and a small amount of liquid medium into the container body 7, and sealing the container;
s3, fixing the mounted processing assembly on a rotary platform 6;
s4, repeating the steps S1-S3 until all the processed components are fixed on the rotary platform 6;
s5, adjusting the rotating speed of the speed regulating motor 2 to make the rotating speed of the rotary platform 6 be 15 r/min;
s6, adjusting the amplitude and frequency of the vibration platform 1; the amplitude is 5mm, and the frequency is 30 Hz;
s7, starting the speed regulating motor 2 and the vibration platform 1, making the container rotate along with the speed regulating motor 2, the small belt pulley 3, the large belt pulley 5 and the rotary platform 6, and horizontally vibrating along with the vibration platform 1 at the amplitude of 5mm and the frequency of 30Hz to finish the finishing processing of the blade surface;
s8, after processing for 10min, stopping the speed regulating motor 2 and the vibration platform 1;
s9, taking down the processing assembly from the rotary platform 6;
s10, the container lid 10 is removed, and the blade 9 to be processed is taken out from the special jig 11.
The processing effect is as follows:
after adopting the combined closed cavity vibration type tumbling and polishing, the size precision and the form and position tolerance of the blade profile meet the requirements of drawings, and the surface roughness of the bladeRaThe value is reduced from 0.8 mu m to 0.25 mu m, the blade profile knife mark is removed, the surface texture is greatly improved, and the finishing processing target is realized.
Example 4
This embodiment provides a method for machining a blade 9 to be machined, which is a rolled blade, using the apparatus described in embodiment 1, comprising the steps of,
s1, fixing the processed blade 9 on the clamp 11;
s2, adding a processing medium 8 containing a roll-polishing grinding block with 50% of loading amount and a small amount of liquid medium into the container body 7, and sealing the container;
s3, fixing the mounted processing assembly on a rotary platform 6;
s4, repeating the steps S1-S3 until all the processed components are fixed on the rotary platform 6;
s5, adjusting the rotating speed of the speed regulating motor 2 to make the rotating speed of the rotary platform 6 be 1 r/min;
s6, adjusting the amplitude and frequency of the vibration platform 1; the amplitude is 4mm, and the frequency is 50 Hz;
s7, starting the speed regulating motor 2 and the vibration platform 1, and enabling the container to rotate along with the speed regulating motor 2, the small belt pulley 3, the large belt pulley 5 and the rotary platform 6; and horizontally vibrates with the vibration platform 1 at the amplitude of 4mm and the frequency of 50Hz to finish the finishing processing of the blade surface;
s8, stopping the speed regulating motor 2 and the vibration platform 1 after processing for 15 min;
s9, taking down the processing assembly from the rotary platform 6;
s10, the container lid 10 is removed, and the blade 9 to be processed is taken out from the special jig 11.
The processing effect is as follows:
after adopting the combined closed cavity vibration type tumbling and polishing, the blade profile dimension precision and the form and position tolerance accord with the drawingPaper requirements, blade surface roughnessRaThe value is reduced from 1.05 mu m to 0.29 mu m, the blade profile knife mark is removed, the surface texture is greatly improved, and the finishing processing target is realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (10)
1. A combined closed cavity vibration type barreling and polishing device for processing the surface of a blade is characterized by comprising a vibration platform (1), a bracket (12), a supporting shaft (13), a bearing (14), a speed regulating motor (2), a small belt wheel (3), a flat belt (4), a large belt wheel (5), a rotary platform (6) and a processing assembly;
a support (12) is arranged on the vibration platform (1), a support shaft (13) is arranged on the support (12) through a bearing (14), and the support shaft (13) is fixedly connected with a large belt wheel (5) and a rotary platform (6);
the small belt wheel (3) is connected with the speed regulating motor (2) and rotates along with the speed regulating motor (2); the small belt wheel (3) is connected with the large belt wheel (5) through a flat belt (4);
a plurality of processing assemblies are fixed on the rotary platform (6) along the circumferential direction;
the processing assembly comprises a container, a processing medium (8) and a clamp (11);
the container adopts a split structure and comprises a container body (7) and a container cover (10);
the processing medium (8) is a mixture consisting of a barrel polishing grinding block and a liquid medium;
the clamp (11) is fixed on the container cover (10) and used for clamping the processed blade (9);
the shape of the inner cavity of the container body (7) is a special-shaped inner cavity matched with the shape of the processed blade (9), and after the processed blade (9) is fixed on the clamp (11), the processed blade (9), the container body (7) and the container cover (10) form a combined closed cavity.
2. The oscillating barrel burnishing apparatus of claim 1, wherein the number of working units is selected from the group consisting ofnThe number of the main components is one,nas determined by the formula (1),
wherein:ffrequency of the vibration table, Hz;Ais the amplitude of the vibration platform, mm;min order to process the mass of the assembly, kg,the total mass of the moving coil of the vibration platform and the horizontal sliding table is kg;the total mass of the bracket, the large belt wheel, the supporting shaft, the bearing and the rotary platform is kg;Fis the excitation force of the vibration platform, N.
3. The combined closed cavity vibratory barrel burnishing apparatus for blade surfacing according to claim 2, characterized in that the amplitude of the vibration platform (1)AAt 3mm-5mm, frequencyfAt 30Hz-100 Hz.
4. The oscillating barreling finishing apparatus of a combined closed cavity for the surface processing of blades according to claim 1, wherein the rotating platform (6) has a rotation speed of 1r/min to 30 r/min.
5. The oscillating barrel-grinding finishing device with the combined closed cavity for processing the surface of the blade as claimed in claim 1, wherein the loading amount of the barrel-polishing grinding block is 50-80%.
6. The combined closed cavity vibratory barrel burnishing apparatus for blade surfacing of claim 1, wherein the vessel body (7) and vessel cover (10) are connected using studs.
7. The combined closed cavity vibratory barrel-grinding finishing device for processing the surface of the blade as claimed in claim 1, wherein the bracket (12), the large belt wheel (5), the supporting shaft (13), the rotary platform (6), the container body (7) and the container cover (10) are made of silicon-magnesium alloy, aluminum-magnesium alloy or carbon fiber material.
8. The oscillating barreling apparatus for blade surface machining according to claim 1, wherein the blade (9) to be machined is an aircraft engine blade.
9. A method for processing a combined closed cavity vibration type tumbling and finishing device for processing the surface of a blade according to any one of claims 1 to 8, which comprises the following steps:
s1, fixing the processed blade (9) on a clamp (11);
s2, adding a processing medium (8) containing a barrel polishing grinding block and a liquid medium into a container body (7), covering a container cover (10), and sealing the container;
s3, fixing the mounted processing assembly on a rotary platform (6);
s4, repeating the steps S1-S3 untilnAll the processing components are fixed on a rotary platform (6);
s5, adjusting the rotating speed of the speed regulating motor (2) to enable the rotating speed of the rotary platform (6) to be 1r/min-30 r/min;
s6, adjusting the amplitude and frequency of the vibration platform (1): the amplitude is 3mm-5mm, and the frequency is 30Hz-100 Hz;
and S7, starting the speed regulating motor (2) and the vibration platform (1), making the container rotate along with the speed regulating motor (2), the small belt wheel (3), the large belt wheel (5) and the rotary platform (6), and horizontally vibrating along with the vibration platform (1) at a preset amplitude and frequency to finish the surface finishing of the processed blade (9).
10. The process of claim 9, further comprising the steps of:
s8, stopping the speed regulating motor (2) and the vibration platform (1) after the preset time is processed;
s9, taking down the processing assembly from the rotary platform (6);
s10, the container cover (10) is taken down, and the processed blade (9) is taken out from the clamp (11).
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| CN113070806A (en) * | 2021-03-23 | 2021-07-06 | 陕西法士特齿轮有限责任公司 | Abrasive particle flow finishing equipment for batch machining of gear parts |
| CN114227518A (en) * | 2021-12-31 | 2022-03-25 | 无锡市夸克微智造科技有限责任公司 | Flexible artificial lens polishing machine and flexible polishing method |
| CN115122223A (en) * | 2022-09-01 | 2022-09-30 | 太原理工大学 | Rotary polishing and grinding floating tool for machining surfaces of ferrule parts |
| CN116100455A (en) * | 2023-03-20 | 2023-05-12 | 西安航天动力研究所 | Longitudinal polishing device and longitudinal polishing method for fatigue test sample |
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