CN113857769B - Method and device for machining complex curved surface part based on self-adaptive adjustment of part shape - Google Patents
Method and device for machining complex curved surface part based on self-adaptive adjustment of part shape Download PDFInfo
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- CN113857769B CN113857769B CN202111107449.4A CN202111107449A CN113857769B CN 113857769 B CN113857769 B CN 113857769B CN 202111107449 A CN202111107449 A CN 202111107449A CN 113857769 B CN113857769 B CN 113857769B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003754 machining Methods 0.000 title claims description 12
- 238000012545 processing Methods 0.000 claims abstract description 68
- 238000005457 optimization Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000003672 processing method Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
Abstract
The invention relates to the technical field of part shape self-adaptive processing, in particular to a method and a device for processing a complex curved surface part based on part shape self-adaptive adjustment, wherein the processing device comprises: a work table; the control units are arranged on the workbench and are adjustable in height; the vacuum chuck is arranged at the top end of the control unit and is used for adsorbing complex curved surface parts; the force sensor is arranged in the middle of the vacuum chuck and is used for collecting cutting force data during the processing of the complex curved surface part and converting the cutting force data into an electric signal; the upper computer is connected with the control unit and the force sensor through electric signals. Compared with the prior art, the invention automatically adjusts the processing parameters such as the cutter rotating speed, the main shaft feeding speed, the processing path, the stepping stroke and the like, thereby realizing the optimization adjustment of the actual processing quality; accurately reflects the real-time state of the part in the processing process and reduces the damage of the part in the processing process.
Description
Technical Field
The invention relates to the technical field of part shape self-adaptive processing, in particular to a method and a device for processing a complex curved surface part based on part shape self-adaptive adjustment.
Background
Complex curved surface parts, such as engine turbine blades and the like, are widely applied to the fields of aerospace, transportation, energy power and the like. Along with the continuous development of high-end equipment, higher requirements are put forward on the machining quality and the machining efficiency of complex curved surface parts. The traditional processing method usually needs to design a processing path and processing parameters according to a part drawing, and is difficult to optimize and adjust according to actual processing quality in the processing process.
Patent CN102172845a discloses a method for verifying processing parameters of a complex thin-walled curved surface workpiece, which uses a high-speed camera to record real-time working state of a machine tool in the processing process of the complex curved surface workpiece, and performs post-processing real-time recording to obtain real-time parameters of the processing parameters of the workpiece, and uses the parameters to correct the parameters of the complex curved surface workpiece. However, the method can only use the camera to obtain the image information of the workpiece to be processed, and the actual state of the part in the processing process can not be accurately reflected.
Disclosure of Invention
In order to solve the technical problems, the invention provides a complex curved surface part processing method and device based on part appearance self-adaptive adjustment.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
complicated curved surface part processingequipment based on part appearance self-adaptation adjustment includes:
a work table;
the control units are arranged on the workbench and are adjustable in height;
the vacuum chuck is arranged at the top end of the control unit and is used for adsorbing complex curved surface parts;
the force sensor is arranged in the middle of the vacuum chuck and is used for collecting cutting force data during the processing of the complex curved surface part and converting the cutting force data into an electric signal;
the upper computer is connected with the control unit and the force sensor through electric signals and is used for drawing the outline of the surface to be processed of the complex curved surface part, setting processing parameters, processing cutting force signals in real time, optimizing and calculating the processing parameters and adjusting the posture of the cutter, calculating the displacement of the control unit and adjusting the posture of the control unit.
Preferably, a displacement control device connected with the upper computer electrical signal is arranged at the bottom of the control unit.
The processing method of the complex curved surface part processing device based on the self-adaptive adjustment of the shape of the part comprises the following specific steps:
the state of a plurality of control units and the numerical value of a force sensor are zeroed;
placing the complex curved surface part to be processed on a workbench, and adsorbing the complex curved surface part to be processed on a vacuum chuck so that the profile of the complex curved surface part is consistent with the profile of the complex curved surface part by a curve formed by the top ends of a plurality of control units;
step three, top end position signals of a plurality of control units are sent to an upper computer, the upper computer carries out space position matrix calculation according to the position signals, and the shape outline of a surface to be processed of the complex curved surface part to be processed is drawn;
step four, according to the shape outline of the surface to be processed and the processing requirement, automatically planning a processing path, and after forming preliminarily set processing parameters, starting to process the surface to be processed of the complex curved surface part to be processed;
acquiring cutting force in the processing process through a force sensor, transmitting the cutting force into an upper computer, and performing inverse processing on a received cutting force signal by the upper computer to acquire the overall stress condition of a complex curved surface in the processing process;
step six, optimizing and calculating the processing parameters according to the acquired conditions, and carrying out attitude calculation of the control units by combining the geometric dimensions of the surface to be processed of the complex curved surface part to be processed to obtain the displacement required to be adjusted by each control unit;
step seven, according to the result obtained by optimization calculation in the step six, sending the result to a cutter for processing parameter adjustment, and sending the displacement amount required to be adjusted by the obtained control unit to the control unit for posture adjustment;
and (eight) repeating the steps (six) to (seven) until the machining of the part with the complex curved surface to be machined is finished.
Further, the machining parameters in the step (six) include a tool rotation speed, a feed speed, a stepping stroke, and a machining path.
The beneficial effects of the invention are as follows:
compared with the prior art, the invention analyzes the stress condition of the complex curved surface part in the processing process by the upper computer, combines the curved surface geometric shape of the complex curved surface part to carry out optimizing calculation of processing parameters and control unit displacement, automatically adjusts the processing parameters such as cutter rotating speed, main shaft feeding speed, processing path, stepping stroke and the like, and realizes the optimization adjustment of actual processing quality; according to the invention, the control unit is used for carrying out the spatial position matrix calculation according to the position signals by the upper computer along with the self-adaptive descending of the outline of the complex curved surface part, the outline of the shape of the surface to be processed of the complex curved surface part is drawn, and the real-time state of the part in the processing process is accurately reflected by matching with the cutting force signals acquired by the force sensor in real time, and the damage of the part in the processing process is reduced.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the structure of the device of the present invention;
fig. 3 is a schematic top view of the working table of the present invention.
In the figure: 1. a work table; 2. a control unit; 3. a vacuum chuck; 4. a complex curved surface part to be processed; 5. a cutter; 6. and an upper computer.
Detailed Description
In order that the manner in which the invention is attained, as well as the features and advantages thereof, will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings.
As shown in fig. 1 to 3, the complex curved surface part processing device based on part shape self-adaptive adjustment comprises a workbench 1, wherein a control unit 2 is densely distributed on the workbench 1, the top end of the control unit 2 is provided with a vacuum chuck 3, and the vacuum chuck 3 is used for adsorbing complex curved surface parts; a force sensor is arranged in the middle of the vacuum chuck 3 and is used for collecting cutting force data during the processing of complex curved surface parts and converting the cutting force data into electric signals; the bottom of the control unit 2 is provided with a displacement control device for adjusting the posture, namely the height, of the control unit 2.
The device also comprises an upper computer 6, wherein the upper computer 6 is connected with a displacement control device and a force sensor in the control unit 2 through electric signals; the upper computer 6 is used for drawing the outline of the surface to be processed of the complex curved surface part, setting processing parameters, processing cutting force signals in real time, optimizing and calculating the processing parameters and adjusting the gesture of the cutter 5, calculating the displacement of the control unit 2 and adjusting the gesture of the control unit 2.
The processing method of the complex curved surface part processing device based on the self-adaptive adjustment of the shape of the part comprises the following specific steps:
step (one) zeroes the state of the control unit 2, the force sensor value.
Specifically, the vacuum chucks 3 on all the control units 2 on the workbench 1 are opened, and the values of all the corresponding force sensors are zeroed.
And step two, placing the part 4 with the complex curved surface to be processed on the workbench 1, and adsorbing the vacuum chuck 3 on the part 4 with the complex curved surface to be processed, so that the curve formed by the top end of the control unit 2 is consistent with the outline shape of the part with the complex curved surface.
And step three, transmitting the top end position signals of all the control units 2 to the upper computer 6, and carrying out space position matrix calculation by the upper computer 6 according to the position signals to draw the shape outline of the surface to be processed of the complex curved surface part 4 to be processed.
And step four, automatically planning a processing path according to the shape outline of the surface to be processed and the processing requirement, and after forming the preliminarily set processing parameters, starting to process the surface to be processed of the complex curved surface part 4 to be processed.
And step five, collecting cutting force in the processing process through a force sensor, transmitting the cutting force into the upper computer 6, and carrying out inverse processing on the received cutting force signal by the upper computer 6 to obtain the integral stress condition of the complex curved surface in the processing process.
And step six, carrying out optimization calculation on the processing parameters according to the acquired conditions, and carrying out attitude calculation on the control units 2 by combining the geometric dimensions of the surface to be processed of the complex curved surface part to be processed to obtain the displacement amount required to be adjusted by each control unit 2.
Specifically, the machining parameters include a tool rotation speed, a feed speed, a stepping stroke and a machining path.
Step seven, according to the result obtained by optimization calculation in the step six, sending the result to the cutter 5 for processing parameter adjustment, and sending the obtained displacement amount required to be adjusted by the control unit 2 to the control unit 2 for posture adjustment;
and (eight) repeating the steps (six) to (seven) until the machining of the part 4 with the complex curved surface to be machined is finished.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The processing method of the complex curved surface part processing device based on the self-adaptive adjustment of the shape of the part is characterized by comprising the following steps of: the complex curved surface part processing device based on the part appearance self-adaptive adjustment comprises: a work table (1); the control units (2) are arranged on the workbench (1) in a plurality and are adjustable in height; the vacuum sucker (3) is arranged at the top end of the control unit (2) and is used for adsorbing complex curved surface parts; the force sensor is arranged in the middle of the vacuum chuck (3) and is used for collecting cutting force data during the processing of the complex curved surface part and converting the cutting force data into an electric signal; the upper computer (6) is connected with the control unit (2) and the force sensor through electric signals and is used for drawing the outline of the surface to be processed of the complex curved surface part, setting processing parameters, processing cutting force signals in real time, optimizing and calculating the processing parameters and adjusting the posture of the cutter (5), calculating the displacement of the control unit (2) and adjusting the posture of the control unit (2); the bottom of the control unit (2) is provided with a displacement control device which is electrically connected with the upper computer (6);
the processing method comprises the following specific steps:
the state and force sensor values of a plurality of control units (2) are zeroed;
step two, placing the complex curved surface part (4) to be processed on a workbench (1), and adsorbing the vacuum chuck (3) on the complex curved surface part (4) to be processed, so that a curve formed by the top ends of a plurality of control units (2) is consistent with the outline shape of the complex curved surface part;
step three, top end position signals of a plurality of control units (2) are sent to an upper computer (6), the upper computer (6) carries out space position matrix calculation according to the position signals, and the shape outline of a surface to be processed of the complex curved surface part (4) to be processed is drawn;
step four, according to the shape outline of the surface to be processed and the processing requirement, automatically planning a processing path, and after forming preliminarily set processing parameters, starting to process the surface to be processed of the complex curved surface part (4) to be processed;
acquiring cutting force in the processing process through a force sensor, transmitting the cutting force into an upper computer (6), and performing inverse processing on a received cutting force signal by the upper computer (6) to acquire the overall stress condition of a complex curved surface in the processing process;
step six, optimizing and calculating the processing parameters according to the acquired conditions, and carrying out attitude calculation of the control units (2) by combining the geometric dimensions of the surfaces to be processed of the parts with complex curved surfaces to be processed to obtain the displacement amount required to be adjusted by each control unit (2);
step seven, according to the result obtained by optimization calculation in the step six, sending the result to a cutter (5) for processing parameter adjustment, and sending the displacement amount required to be adjusted by the obtained control unit (2) to the control unit (2) for posture adjustment;
and (eight) repeating the steps (six) to (seven) until the processing of the part (4) with the complex curved surface to be processed is finished.
2. The processing method according to claim 1, characterized in that: the machining parameters in the step (six) comprise tool rotation speed, feed speed, stepping stroke and machining path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107449.4A CN113857769B (en) | 2021-09-22 | 2021-09-22 | Method and device for machining complex curved surface part based on self-adaptive adjustment of part shape |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107449.4A CN113857769B (en) | 2021-09-22 | 2021-09-22 | Method and device for machining complex curved surface part based on self-adaptive adjustment of part shape |
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| CN113857769A CN113857769A (en) | 2021-12-31 |
| CN113857769B true CN113857769B (en) | 2023-11-03 |
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| CN102679926A (en) * | 2012-05-28 | 2012-09-19 | 河海大学常州校区 | Location method of thin wall curve part based on bounding box in multi-point array flexible tool |
| CN103341806A (en) * | 2013-07-09 | 2013-10-09 | 中国科学院光电技术研究所 | Flexible supporting system for machining crescent-type thin mirror surface |
| CN204321907U (en) * | 2014-11-19 | 2015-05-13 | 河海大学常州校区 | A kind of modular flexible multipoint tool system |
| CN110142627A (en) * | 2019-04-03 | 2019-08-20 | 北京航空航天大学 | A kind of deep camber panel Ultra-precision Turning flexible clamping system based on multiple spot |
| CN111413923A (en) * | 2020-03-30 | 2020-07-14 | 辽宁省交通高等专科学校 | High-speed precision machining system and method for machining complex curved surface |
| CN112676884A (en) * | 2020-12-01 | 2021-04-20 | 西北工业大学 | Self-adaptive clamp suitable for complex curved surface machining and use method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019199718A1 (en) * | 2018-04-12 | 2019-10-17 | Advanced Machine Works, LLC | Static flexible tooling system |
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2021
- 2021-09-22 CN CN202111107449.4A patent/CN113857769B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679926A (en) * | 2012-05-28 | 2012-09-19 | 河海大学常州校区 | Location method of thin wall curve part based on bounding box in multi-point array flexible tool |
| CN103341806A (en) * | 2013-07-09 | 2013-10-09 | 中国科学院光电技术研究所 | Flexible supporting system for machining crescent-type thin mirror surface |
| CN204321907U (en) * | 2014-11-19 | 2015-05-13 | 河海大学常州校区 | A kind of modular flexible multipoint tool system |
| CN110142627A (en) * | 2019-04-03 | 2019-08-20 | 北京航空航天大学 | A kind of deep camber panel Ultra-precision Turning flexible clamping system based on multiple spot |
| CN111413923A (en) * | 2020-03-30 | 2020-07-14 | 辽宁省交通高等专科学校 | High-speed precision machining system and method for machining complex curved surface |
| CN112676884A (en) * | 2020-12-01 | 2021-04-20 | 西北工业大学 | Self-adaptive clamp suitable for complex curved surface machining and use method thereof |
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| CN113857769A (en) | 2021-12-31 |
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