CN117226162A - Ultrasonic vibration assisted milling tool and milling tool changing avoiding method - Google Patents
Ultrasonic vibration assisted milling tool and milling tool changing avoiding method Download PDFInfo
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- CN117226162A CN117226162A CN202311507752.2A CN202311507752A CN117226162A CN 117226162 A CN117226162 A CN 117226162A CN 202311507752 A CN202311507752 A CN 202311507752A CN 117226162 A CN117226162 A CN 117226162A
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- 238000003801 milling Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The application relates to an ultrasonic vibration auxiliary milling tool and a milling tool changing avoiding method, which belong to the technical field of machine tool fixture tools, and comprise an ultrasonic tool handle and a primary magnetic core, wherein the ultrasonic tool handle is connected with a machine tool spindle, and a milling cutter is fixed at the front end of the ultrasonic tool handle; the primary magnetic core is arranged at the outer side of the circumference of the ultrasonic knife handle; the device also comprises a main shaft ring, an upper bracket, a linear motor, a lower bracket, a proximity sensor and a singlechip, wherein the main shaft ring is fixedly connected to a main shaft of the machine tool, two bosses are arranged at the edge of the main shaft ring, and one boss is a sensor boss and is used for installing the proximity sensor; the other boss is a fixed seat and is used for installing an upper bracket; the other end of the upper bracket is connected with the linear motor shell; the output end of the linear motor is connected with the lower bracket, and the lower bracket is fixed on the primary side magnetic core through the fixed magnetic core stud. The application has simple structure, can solve the problem of motion interference between the tool changing manipulator and the primary magnetic core, and improves the spatial layout of the structural design of the primary magnetic core.
Description
Technical Field
The application belongs to the technical field of machine tool fixture tools, and particularly relates to an ultrasonic vibration auxiliary milling tool and a milling tool changing avoiding method.
Background
Along with the continuous development of the manufacturing industry field, the machining precision and the difficulty requirements of mechanical parts are also continuously improved, and in the aviation field, miniature deep holes or miniature narrow grooves are often required to be machined on materials which are difficult to machine, and at the moment, the ultrasonic auxiliary machining technology is required to replace the traditional machining mode to improve the machining efficiency, so that the cutter wear is saved. However, because the ultrasonic numerical control machining center is high in price and has risks of data safety and the like, the upgrading and updating cost of enterprise equipment is high, so that the traditional machine tool is generally adopted for refitting at present, namely, the purpose of ultrasonic auxiliary machining is realized by replacing an ultrasonic tool handle and additionally installing a primary magnetic core, but because the numerical control machining center has the action of automatic tool changing, the primary magnetic core can often interfere with the movement of a tool changing manipulator.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides the ultrasonic vibration auxiliary milling tool and the milling tool changing avoiding method, which have simple structures, can solve the problem of motion interference between a tool changing manipulator and a primary magnetic core, and improve the spatial layout of the structural design of the primary magnetic core.
The ultrasonic vibration assisted milling tool comprises an ultrasonic tool handle and a primary magnetic core, wherein the ultrasonic tool handle is connected with a main shaft of a machine tool, and a milling cutter is fixed at the front end of the ultrasonic tool handle; the primary magnetic core is arranged at the outer side of the circumference of the ultrasonic knife handle; the tool also comprises a main shaft ring, an upper bracket, a linear motor, a lower bracket, a proximity sensor and a singlechip, wherein the main shaft ring is fixedly connected to a main shaft of the machine tool, the main shaft ring is an annular member, two bosses are arranged at the edge of the main shaft ring, and one boss is a sensor boss and is used for installing the proximity sensor; the other boss is a fixed seat and is used for installing an upper bracket; the other end of the upper bracket is connected with the linear motor shell; the output end of the linear motor is connected with the lower bracket, and the lower bracket is fixed on the primary side magnetic core through the fixed magnetic core stud.
The boss is vertically arranged.
One end of the upper bracket is fixed on the spindle ring through an upper bracket fixing stud.
The upper bracket fixing stud is a hexagonal stud.
The specific positions of the two bosses on the spindle ring are adaptively designed according to different working spaces of the manipulator, so that the positions of the bosses do not block the manipulator to change tools.
The proximity sensor wire is disposed along an edge of the spindle ring.
The proximity sensor adopts electromagnetic induction type or ultrasonic wave type.
The upper bracket comprises an upper bracket main body which is H-shaped and comprises two large extending ends and two small extending ends, wherein the two large extending ends are provided with motor fixing screw holes and slot-shaped holes which are used for being connected with a linear motor shell; the two small extending ends are fixed ends of the spindle ring and are used for being connected with the spindle ring.
The precision of the linear motor is not lower than 0.1mm, and the bearing is not less than 2 times of the weight of the primary side magnetic core.
The milling tool changing avoiding method based on the ultrasonic vibration auxiliary milling tool comprises the following steps of:
step one: assistant milling tool for assembling ultrasonic vibration
The assembly process is as follows:
fixing a main shaft ring with a main shaft of a machine tool; fixing the upper bracket on a fixed seat on the main shaft ring; the linear motor shell is connected with the upper bracket, but is not required to be screwed; after the primary side magnetic core is fixed with the lower bracket, the lower bracket is connected and fixed with the linear motor; switching on a power supply for the linear motor, and switching off the power supply after adjusting the power supply to the maximum stroke; the installation position and the angle of the linear motor are adjusted, so that the annular distance between the primary side magnetic core and the ultrasonic knife handle is ensured to be 0.2-0.5 mm, and the linear motor is fully fixed; connecting the proximity sensor with the linear motor and the singlechip;
step two: performing ultrasonic vibration assisted milling
The program waits after the singlechip is initialized, and in the processing process, when the tool changing manipulator is not close, the program continues waiting; when the tool changing manipulator operates and starts to approach the proximity sensor to change the tool, an electric control circuit connected with the single chip microcomputer is conducted, the proximity sensor feeds back a signal of the tool changing manipulator approaching to the single chip microcomputer, the single chip microcomputer sends a working instruction to the linear motor, and the linear motor is started to drive the primary magnetic core to move upwards away from the ultrasonic tool handle and away from a working space of the tool changing manipulator; when the tool changing manipulator finishes the operation, the proximity sensor feeds back a signal of the tool changing manipulator far away to the singlechip, the program waits until the singlechip sends a working instruction to the linear motor, the linear motor is started again, the primary magnetic core returns to the original position and moves downwards to the limit position, and the program still continues to wait until the next tool changing;
the rising time of the primary magnetic core driven by the linear motor is 3s-6s, the stay tool changing time is 5s-10s, the primary magnetic core driven by the linear motor is 3s-6s to descend and reset, and the specific time is set according to the tool changing time of a specific machine tool.
The beneficial effects of the application are as follows: the ultrasonic vibration auxiliary milling tool and the manipulator are in associated motion through the proximity sensor, when the tool changing manipulator approaches, the ultrasonic vibration auxiliary milling tool moves upwards, is far away from an interference area of the tool changing manipulator, and when the tool changing manipulator finishes operation, the ultrasonic vibration auxiliary milling tool returns to a position. The problem that the ultrasonic vibration auxiliary processing device is easy to collide with the tool changing manipulator is solved. No similar products exist in the market at present. The application has simple structure and low cost, and has wide popularization value in the field of ultrasonic vibration machining. The application has the advantages that the application verification is carried out in practice, the manual tool changing time is 5 minutes, the automatic tool changing time is 0.5 minutes, and after the ultrasonic vibration assisted milling tool changing avoiding method provided by the application is adopted, the processing time of a test piece in the working procedure of a part is reduced by 1 hour.
1. The primary magnetic core is linked with the tool changing manipulator, the problem of motion interference of the primary magnetic core and the tool changing manipulator is solved, the ultrasonic tool handle with the primary magnetic core with larger surrounding area is provided, the current surrounding area is at most one third to one half, and the energy transmission effect is improved to a greater extent.
2. If the primary side magnetic core rotates, the related movement stroke and the related sweeping space are larger, and the primary side magnetic core is easy to touch other auxiliary equipment, so that the operation of a machining center is not facilitated. The application has the advantages of shorter movement stroke of the primary magnetic core and high efficiency.
3. The movable part which drives the primary side magnetic core to move on the linear motor is installed inwards and safer than the movable part which drives the primary side magnetic core to move outwards.
4. The upper bracket and the lower bracket are provided with the adjusting holes, so that the installation position of the primary magnetic core can be adjusted according to the requirements, the structure is simple, and micro-motion adjusting equipment is not needed to be added.
Drawings
FIG. 1 is a schematic view of the position and structure of a processing tool in the present application during processing operation;
FIG. 2 is a schematic view of the position and structure of the tooling during tool changing in the present application;
FIG. 3 is a schematic diagram showing the connection of the primary core to the lower support in the present application;
FIG. 4 is a schematic diagram showing the connection of the spindle ring and the upper bracket according to the present application;
FIG. 5 is a schematic view of a spindle ring according to the present application;
FIG. 6 is a schematic view of an upper rack in the present application;
FIG. 7 is a schematic view of a lower bracket of the present application;
FIG. 8 is a schematic diagram of a process flow of the present application;
wherein,
1. the device comprises a machine tool spindle, 2, a spindle ring, 21, screw holes, 22, a sensor boss, 23, a power supply terminal, 24, a fixed seat, 25, a proximity sensor lead, 3, an ultrasonic tool holder, 4, a milling cutter, 5, an upper support, 51, an upper support main body, 52, a spindle ring fixed end, 53, a motor fixed screw hole, 54, a slot hole, 6, a linear motor, 7, a lower support, 71, a lower support main body, 72, a primary magnetic core fixed hole, 73, a mobile sub connecting screw hole, 8, a primary magnetic core, 91, a fixed magnetic core stud, 92, an upper support fixed stud, 10 and a proximity sensor.
Detailed Description
For better explanation of the present application, for easy understanding, the technical solution and effects of the present application will be described in detail below by way of specific embodiments with reference to the accompanying drawings.
1-2, an ultrasonic vibration assisted milling tool comprises an ultrasonic tool handle 3 and a primary magnetic core 8, wherein the ultrasonic tool handle 3 is connected with a machine tool spindle 1, and a milling cutter 4 is fixed at the front end of the ultrasonic tool handle 3; the primary side magnetic core 8 is arranged outside the circumference of the ultrasonic knife handle 3. The tool also comprises a main shaft ring 2, an upper bracket 5, a linear motor 6, a lower bracket 7, a proximity sensor 10 and a singlechip (not shown in the figure), wherein the linear motor 6 and the proximity sensor 10 are electrically connected with the singlechip through connecting wires.
The spindle ring 2 is fixedly connected to the machine tool spindle 1, the spindle ring 2 is an annular member, two bosses are arranged at the edge of the spindle ring, the bosses are vertically arranged, one of the bosses is a sensor boss 22 used for installing a proximity sensor 10 and used for sensing a signal that the tool changing manipulator approaches the machine tool spindle 1; the other boss is a fixed seat 24 for installing the upper bracket 5, one end of the upper bracket 5 is fixed on the spindle ring 2 through an upper bracket fixing stud 92, and the upper bracket fixing stud 92 is a hexagonal stud. The specific positions of the two bosses on the spindle ring 2 are adaptively designed according to different working spaces of the manipulator, namely, the positions of the bosses are designed on site according to the installation positions of the matched manipulator, so that the positions of the bosses do not block the manipulator to carry out tool changing operation. The other end of the upper bracket 5 is connected with the shell of the linear motor 6.
As shown in fig. 4-5, a plurality of screw holes 21 matched with the end of the machine tool spindle 1 are uniformly distributed on the spindle ring 2 along the circumferential direction and are used for being connected with the machine tool spindle 1. The fixing base 24 is provided with a power terminal 23 for connecting an external power supply. The proximity sensor wire 25 to which the proximity sensor 10 is connected is arranged along the edge of the spindle ring 2.
The proximity sensor 10 employs electromagnetic induction type or ultrasonic type.
As shown in fig. 6, the upper bracket 5 includes an upper bracket main body 51, the upper bracket main body 51 is H-shaped, and includes two large protruding ends and two small protruding ends, wherein the two large protruding ends are provided with a motor fixing screw hole 53 and a slot-shaped hole 54 for connecting with the housing of the linear motor 6, and the slot-shaped hole 54 is used as an adjusting hole for fine adjustment; the two small protruding ends are spindle ring fixing ends 52 for connection with the spindle ring 2.
As shown in fig. 3, the output end of the linear motor 6 is connected with the lower bracket 7, the lower bracket 7 is fixed on the primary magnetic core 8 through the fixed magnetic core stud 91, and the linear motor 6 drives the primary magnetic core 8 to move up and down through the lower bracket 7. The precision of the linear motor 6 is not lower than 0.1mm, and the bearing weight is not less than 2 times of the weight of the primary side magnetic core 8. The motion parameters of the linear motor 6 are selected according to specific requirements. One end of the lower bracket 7 is connected with the movable part of the linear motor 6, and the other end is connected with the primary side magnetic core 8. The movable part which drives the primary side magnetic core to move on the linear motor is arranged inwards, namely towards the ultrasonic knife handle 3.
As shown in fig. 7, the lower bracket 7 includes a lower bracket body 71, and the lower bracket body 71 is provided with a primary magnetic core fixing hole 72 for connecting with the primary magnetic core 8, and a moving sub connecting screw hole 73 for connecting with the linear motor 6. The primary core fixing hole 72 is a slot-shaped hole, and can be used as an adjusting hole to adjust the mounting position of the primary core as required.
The primary side magnetic core 8 includes a magnetic core and a transmitting coil, and the specific structure is the prior art, which is not described herein.
The tool changing avoiding method for milling based on the ultrasonic vibration auxiliary milling tool specifically comprises the following steps:
step one: assembling an ultrasonic vibration auxiliary milling tool:
the assembly process is as follows:
the screw holes 21 of the spindle ring 2 are aligned with the corresponding screw holes at the end part of the machine tool spindle 1, and then fixed by utilizing hexagonal studs.
The upper bracket 5 is fixed on a fixed seat 24 on the main shaft ring 2 by utilizing a hexagonal stud.
Screw holes in the shell of the linear motor 6 are aligned with motor fixing screw holes 53 of two large extending ends in the fixing upper bracket 5, and then are connected with a hexagonal nut by using a fixing stud, and the hexagonal nut is not required to be screwed.
After the primary magnetic core 8 and the lower bracket 7 are fixed through the primary magnetic core fixing hole 72, the movable sub connecting screw hole 73 of the lower bracket 7 is aligned and fixed with the screw hole on the movable sub of the linear motor 6.
The linear motor 6 is powered on, and after the linear motor is regulated to the maximum stroke, the linear motor is powered off.
Through adjustment linear electric motor 6's mounted position and angle, the ring-shaped interval that guarantees former limit magnetic core 8 and supersound handle of a knife 3 in this embodiment is 0.4mm, and screw up fixed double-screw bolt and hex nut and fully fix linear electric motor 6.
The proximity sensor and the linear motor are connected with the singlechip, and a control circuit of the proximity sensor 10 and the linear motor 6 is connected.
Step two: performing ultrasonic vibration assisted milling
Referring to fig. 8, the program waits after the single chip microcomputer is initialized, and in the processing process, when the tool changing manipulator is not close, the program continues waiting; when the tool changing manipulator works and starts to close to the proximity sensor to change the tool, an electric control circuit connected with the single chip microcomputer is conducted, the proximity sensor 10 feeds back a signal of the tool changing manipulator approaching to the single chip microcomputer, the single chip microcomputer sends a working instruction to the linear motor 6, the linear motor 6 is started to drive the primary magnetic core 8 to move to the right and above and away from the ultrasonic tool handle 3, and the primary magnetic core is far away from a working space of the tool changing manipulator and moves to a preset position, and as shown in fig. 1, the moving time is preset in a program; when the tool changing manipulator finishes the operation, the proximity sensor 10 feeds back a signal of the distance of the tool changing manipulator to the singlechip, and the program waits until the singlechip sends a working instruction to the linear motor 6, the linear motor 6 is started again, the primary magnetic core 8 returns to move downwards to the limit position, and the program still continues to wait until the next tool changing as shown in fig. 2. In this embodiment, the rising time of the primary side magnetic core driven by the linear motor is 5s, the stay tool changing time is 8s, the primary side magnetic core 5s is driven by the linear motor to descend and reset, the specific time is set according to the tool changing time of a specific machine tool, and the time parameters of the steps can be solidified in a singlechip program.
Claims (10)
1. The utility model provides an supplementary milling frock of ultrasonic vibration, includes ultrasonic knife handle and former limit magnetic core, its characterized in that: the ultrasonic cutter handle is connected with the main shaft of the machine tool, and the milling cutter is fixed at the front end of the ultrasonic cutter handle; the primary magnetic core is arranged at the outer side of the circumference of the ultrasonic knife handle; the tool also comprises a main shaft ring, an upper bracket, a linear motor, a lower bracket, a proximity sensor and a singlechip, wherein the main shaft ring is fixedly connected to a main shaft of the machine tool, the main shaft ring is an annular member, two bosses are arranged at the edge of the main shaft ring, and one boss is a sensor boss and is used for installing the proximity sensor; the other boss is a fixed seat and is used for installing an upper bracket; the other end of the upper bracket is connected with the linear motor shell; the output end of the linear motor is connected with the lower bracket, and the lower bracket is fixed on the primary side magnetic core through the fixed magnetic core stud.
2. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the boss is vertically arranged.
3. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: one end of the upper bracket is fixed on the spindle ring through an upper bracket fixing stud.
4. An ultrasonic vibration-assisted milling tool according to claim 3, wherein: the upper bracket fixing stud is a hexagonal stud.
5. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the specific positions of the two bosses on the spindle ring are adaptively designed according to different working spaces of the manipulator, so that the positions of the bosses do not block the manipulator to change tools.
6. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the proximity sensor wire is disposed along an edge of the spindle ring.
7. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the proximity sensor adopts electromagnetic induction type or ultrasonic wave type.
8. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the upper bracket comprises an upper bracket main body which is H-shaped and comprises two large extending ends and two small extending ends, wherein the two large extending ends are provided with motor fixing screw holes and slot-shaped holes which are used for being connected with a linear motor shell; the two small extending ends are fixed ends of the spindle ring and are used for being connected with the spindle ring.
9. The ultrasonic vibration-assisted milling tool according to claim 1, wherein: the precision of the linear motor is not lower than 0.1mm, and the bearing is not less than 2 times of the weight of the primary side magnetic core.
10. A milling tool changing avoiding method based on the ultrasonic vibration auxiliary milling tool set in claim 1, which is characterized by comprising the following steps:
step one: assistant milling tool for assembling ultrasonic vibration
The assembly process is as follows:
fixing a main shaft ring with a main shaft of a machine tool; fixing the upper bracket on a fixed seat on the main shaft ring; the linear motor shell is connected with the upper bracket, but is not required to be screwed; after the primary side magnetic core is fixed with the lower bracket, the lower bracket is connected and fixed with the linear motor; switching on a power supply for the linear motor, and switching off the power supply after adjusting the power supply to the maximum stroke; the installation position and the angle of the linear motor are adjusted, so that the annular distance between the primary side magnetic core and the ultrasonic knife handle is ensured to be 0.2-0.5 mm, and the linear motor is fully fixed; connecting the proximity sensor with the linear motor and the singlechip;
step two: performing ultrasonic vibration assisted milling
The program waits after the singlechip is initialized, and in the processing process, when the tool changing manipulator is not close, the program continues waiting; when the tool changing manipulator operates and starts to approach the proximity sensor to change the tool, an electric control circuit connected with the single chip microcomputer is conducted, the proximity sensor feeds back a signal of the tool changing manipulator approaching to the single chip microcomputer, the single chip microcomputer sends a working instruction to the linear motor, and the linear motor is started to drive the primary magnetic core to move upwards away from the ultrasonic tool handle and away from a working space of the tool changing manipulator; when the tool changing manipulator finishes the operation, the proximity sensor feeds back a signal of the tool changing manipulator far away to the singlechip, the program waits until the singlechip sends a working instruction to the linear motor, the linear motor is started again, the primary magnetic core returns to the original position and moves downwards to the limit position, and the program still continues to wait until the next tool changing;
the rising time of the primary magnetic core driven by the linear motor is 3s-6s, the stay tool changing time is 5s-10s, the primary magnetic core driven by the linear motor is 3s-6s to descend and reset, and the specific time is set according to the tool changing time of a specific machine tool.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311507752.2A CN117226162B (en) | 2023-11-14 | 2023-11-14 | Ultrasonic vibration assisted milling tool and milling tool changing avoiding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311507752.2A CN117226162B (en) | 2023-11-14 | 2023-11-14 | Ultrasonic vibration assisted milling tool and milling tool changing avoiding method |
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| CN117226162A true CN117226162A (en) | 2023-12-15 |
| CN117226162B CN117226162B (en) | 2024-01-30 |
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| CN117226162B (en) | 2024-01-30 |
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