CN110328563B - Non-uniform passivation device and method for cutting edge of variable-frequency ultrasonic cutter - Google Patents
Non-uniform passivation device and method for cutting edge of variable-frequency ultrasonic cutter Download PDFInfo
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- CN110328563B CN110328563B CN201910485207.5A CN201910485207A CN110328563B CN 110328563 B CN110328563 B CN 110328563B CN 201910485207 A CN201910485207 A CN 201910485207A CN 110328563 B CN110328563 B CN 110328563B
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a non-uniform passivation device and method for a cutting edge of a variable frequency ultrasonic cutter, which comprises a variable frequency ultrasonic device, a cutter clamping device, an angle rotating device, a lifting device and a grinding material liquid container, wherein the variable frequency ultrasonic device is connected with the cutter clamping device through a connecting rod; the cutter clamping device comprises an electromagnet clamp and an alternating current power supply, wherein the bottom of the electromagnet clamp is provided with a clamping bayonet, and when the alternating current power supply is switched on, the clamping bayonet of the electromagnet clamp can adsorb and fix the clamping part of the cutter in the clamping bayonet; the electromagnet holder can realize the rotation of a left set angle and a right set angle under the driving of the angle rotating device; the frequency conversion ultrasonic device comprises a frequency conversion ultrasonic power supply, a frequency conversion energy converter, an amplitude transformer and a tool head. The invention is suitable for the passivation of cutters with different hardness by selecting different abrasive liquids; in addition, the angle of the cutter clamping device is changed by controlling the motor, so that the non-uniform cutting edge passivation is realized, and the equipment universality is better. Furthermore, the ultrasonic frequency is selected, so that the precision and the processing efficiency of the surface of the processed material are directly improved.
Description
Technical Field
The invention relates to the field of passivation of cutting edges of cutters, in particular to a device and a method for non-uniform passivation of cutting edges of variable-frequency ultrasonic cutters.
Background
The cutting work of the cutter is mainly completed by the cutting edge of the cutter, but the cutting edge of the cutter has a plurality of defects, such as poor heat dissipation condition, lower strength and other structural characteristics. After the cutter is processed and produced or sharpened, some irregular defects or flanging still exist on the main cutting edge, so the durability of the cutter in the actual processing process is limited, and the service life is sharply reduced.
In cutting, it has been a major issue in metal cutting to improve cutting efficiency, to prolong the life of a tool, and to reduce production cost. The cutter cutting edge passivation technology has obvious effect on prolonging the service life of the cutter and receives more and more attention. The passivation of the cutting edge can remove the defects on the cutting edge of the cutter, increase the stability of the cutting edge, enable the front cutter face and the rear cutter face to share the mechanical load of the cutting edge part, reduce the abnormal failure of the cutter, and is an important method for solving the problem of early failure of the cutter.
The main purposes of the cutter edge passivation are as follows: on the one hand to obtain the desired cutting edge geometry and on the other hand to remove microscopic defects in the edge area. At present, common cutting edge passivation methods include rotary nylon brush passivation, magnetic grinding powder passivation, chemical passivation, laser passivation and the like.
With the development of the times, the precision requirement on the processing materials is gradually improved, and meanwhile, the methods also have the problems of low processing efficiency, incapability of being generally applicable to cutters with different hardness and poor equipment universality.
As shown in fig. 3, a schematic diagram of the hard milling process is shown, and as shown in fig. 4, the hard milling process is performed by installing a plurality of cutters 70 through a cutter installation disc 60 to perform thread processing, and the main principle is to perform high-speed cutting through two adjacent different tracks of the cutters by means of the eccentricity between the cutter installation disc and the spiral workpiece around the eccentric circular cavity 61 of the spiral workpiece 50.
In the hard rotary milling process, the cutting motion is complex, the tip part in the middle of the cutting edge has larger mechanical impact, and the cutting edge of the cutter is loaded, so that the hard rotary milling cutter has non-uniform characteristics. However, the conventional uniform passivation cutting edge method is poor in global adaptability, and the cutting edge of the tool is seriously damaged due to large load, so that the bottleneck that the service life of the hard rotary milling tool is limited and the processing quality is improved is formed. The time-varying non-uniform loading characteristic of the cutter enables the overall suitability of the passivated cutting edge to be guaranteed to be the key for improving the performance of the cutter and prolonging the service life of the cutter, and a passivating device is urgently needed to conduct uniform or non-uniform passivation on cutters with different processing characteristics.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device and a method for non-uniform passivation of the cutting edge of a variable frequency ultrasonic cutter, aiming at the defects of the prior art, wherein the device and the method for non-uniform passivation of the cutting edge of the variable frequency ultrasonic cutter can adapt to passivation of cutters with different hardness by selecting different abrasive liquids; in addition, the angle of the cutter clamping device is changed by controlling the motor, so that the non-uniform cutting edge passivation is realized, and the equipment universality is better. Furthermore, different frequencies are adopted for processing at different processing time points, so that the problems of the precision requirement on the surface of a processed material, the processing efficiency and the like are directly improved.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a heterogeneous passivating device of frequency conversion supersound cutter blade, includes frequency conversion ultrasonic device, cutter clamping device, angle rotating device, elevating gear and abrasive material liquid container.
The grinding fluid container is filled with grinding fluid, the cutter clamping device is arranged above the grinding fluid container and comprises an electromagnet holder and an alternating current power supply electrically connected with the electromagnet holder, and the bottom of the electromagnet holder is provided with a clamping bayonet which can be spliced with the clamping part of the cutter; when the alternating current power supply is switched on, the clamping bayonet of the electromagnet holder has electromagnetic attraction, and the clamping part of the cutter is fixed in the clamping bayonet of the electromagnet holder in an adsorption manner.
The angle rotating device is connected with the electromagnet holder, and the electromagnet holder can rotate at a left and right set angle under the driving of the angle rotating device.
The angle rotating device and the electromagnet holder can realize synchronous lifting of height under the action of the lifting device.
The frequency conversion ultrasonic device comprises a frequency conversion ultrasonic power supply, a frequency conversion energy converter, an amplitude transformer and a tool head which are coaxially and sequentially arranged; wherein, the frequency conversion transducer is connected with frequency conversion supersound power, and the instrument head stretches into in the abrasive material liquid container.
The lifting device is a lifting platform.
The angle rotating device comprises a control motor and a cutter rotating shaft; the control motor is installed on the elevating platform, and the motor shaft of control motor is connected with the cutter rotation axis through the shaft coupling, and the other end of cutter rotation axis is connected with the electro-magnet holder.
The middle part cover of cutter rotation axis is equipped with the bearing, and the bearing is installed on the bearing frame, and the bearing frame is installed on the elevating platform.
A non-uniform passivation method for a cutting edge of a frequency conversion ultrasonic cutter is characterized in that the cutting edge of the cutter comprises a cutting edge middle tip part, a cutting edge left end part and a cutting edge right end part, and the cutting edge middle tip part, the cutting edge left end part and the cutting edge right end part are respectively positioned in abrasive liquid of an abrasive liquid container through rotating an electromagnet holder to carry out fractional passivation; non-uniform passivation is realized by controlling the passivation time and the passivation frequency of the middle tip part of the cutting edge, the left end part of the cutting edge and the right end part of the cutting edge.
The variable frequency ultrasonic device firstly adopts the frequency of 40-60KHz to carry out primary passivation when each part is passivated, and the abrasive liquid in the abrasive liquid container continuously impacts the surface of the cutting edge part of the cutter with huge impact force, so that the material on the surface of the cutting edge part of the cutter is crushed to achieve the purpose of removing; adopting different passivation time according to different cutter hardness; and then, finely passivating the cutting edge part of the cutter by adopting the frequency of 20-40KHz, so that the processing precision of the surface of the cutting edge part of the cutter is improved.
The type of abrasive liquid can be selected autonomously according to the hardness of the tool to be passivated.
When the cutting edges of the cutter with small middle and large sides are passivated, the specific passivation method comprises the following steps.
Step 1, primary passivation.
And 2, fine passivation.
Step 23, finely passivating the left end part of the blade: and (3) driving the electromagnet holder and the cutter to ascend by the lifting device, rotating the electromagnet holder clockwise by 60 degrees, descending the left end part of the cutting edge into the grinding liquid, and performing primary passivation on the left end part of the cutting edge by adopting the method in the step 21.
The invention has the following beneficial effects:
1. the frequency conversion ultrasonic passivation cutter cutting edge is adopted, and the surface precision and the processing efficiency of the cutter cutting edge are improved. Different frequencies are adopted for processing at different processing time points, so that the problems of the precision requirement and the processing efficiency of the surface of the processed material are directly improved.
2. Different abrasive liquids are selected to adapt to the passivation of cutters with different hardness. That is, the tools of different hardness can be passivated. The non-uniform cutting edge passivation can be carried out on cutters with different processing characteristics, and the equipment universality is good.
3. The angle of the cutter clamping device is changed by controlling the motor, so that the non-uniform cutting edge passivation is realized, and the equipment universality is better.
Drawings
FIG. 1 shows a schematic structural diagram of a non-uniform passivating device for a cutting edge of a variable frequency ultrasonic cutter of the invention.
Fig. 2 shows a schematic view of the structure of the tool holding device and the angle rotating device.
Fig. 3 shows a schematic diagram of a hard rotary milling process.
Fig. 4 shows a schematic diagram of the principle of hard rotary milling.
Fig. 5 shows a schematic view of the construction of a circular cutter.
Fig. 6 shows a schematic view of the structure of a strip cutter.
Among them are:
10. a variable frequency ultrasonic device;
11. a base; 12. a variable frequency ultrasonic power supply; 13. a variable frequency transducer; 14. an amplitude transformer; 15. a tool head;
20. a tool holding device; 21. an electromagnet holder; 211. clamping a bayonet; 22. an alternating current power supply;
30. an angle rotating device;
31. a lifting platform; 32. a motor mounting seat; 33. controlling the motor; 34. a coupling; 35. a bearing seat; 36. a tool rotating shaft;
40. a container for abrasive liquid; 41. an abrasive liquid;
50. screwing the workpiece;
60. a cutter mounting plate; 61. an eccentric circular lumen;
70. a cutter; 71 a clamping part; 72. the middle tip part of the blade; 73. a blade left end; 74. the back end of the blade.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
As shown in figure 1, the non-uniform passivating device for the cutting edge of the variable frequency ultrasonic cutter comprises a variable frequency ultrasonic device 10, a cutter clamping device 20, an angle rotating device 30, a lifting device and an abrasive liquid container 40.
The abrasive liquid container is filled with abrasive liquid 41, and the type of the abrasive liquid can be selected automatically according to the hardness of the cutter to be passivated.
The cutter clamping device is arranged above the abrasive liquid container and comprises an electromagnet clamp 21 and an alternating current power supply 22 electrically connected with the electromagnet clamp, and the bottom of the electromagnet clamp is provided with a clamping bayonet 211 which can be spliced with a clamping part of a cutter.
When the alternating current power supply is switched on, the clamping bayonet of the electromagnet holder has electromagnetic attraction, and the clamping part of the cutter is fixed in the clamping bayonet of the electromagnet holder in an adsorption manner.
The angle rotating device is connected with the electromagnet holder, and the electromagnet holder can rotate at a left and right set angle under the driving of the angle rotating device.
The angle rotating device and the electromagnet holder can realize synchronous lifting of height under the action of the lifting device. The lifting device is preferably a hydraulic or motor driven lifting table 31, well known in the art. The lift table is preferably mounted on the base 11.
As shown in fig. 2, the angle rotating means preferably includes a control motor 33 and a tool rotating shaft 36; the control motor is preferably mounted on the lifting table by means of a motor mount 32, the motor shaft of which is connected to the tool rotation shaft by means of a coupling 34, the other end of which is connected to the electromagnet holder.
Further, the middle part of the tool rotating shaft is preferably sleeved with a bearing, the bearing is mounted on a bearing seat 35, and the bearing seat is mounted on the lifting platform.
The frequency conversion ultrasonic device comprises a frequency conversion ultrasonic power supply 12, a frequency conversion transducer 13, an amplitude transformer 14 and a tool head 15 which are coaxially and sequentially arranged.
The type of the frequency conversion transducer is preferably SKI600, the type of the amplitude transformer is preferably phi 20, and the type of the tool head is preferably H70. The tool head is preferably made of 45 steel, and the tool head can transmit ultrasonic frequency to enable radiation to be more uniform.
Wherein, frequency conversion transducer is connected with frequency conversion ultrasonic power supply, and frequency conversion ultrasonic power supply 12 and frequency conversion transducer 13 are all preferably installed on the base, and the tool head is during stretching into the abrasive material liquid in the abrasive material liquid container, and the tool head is preferably fixed in the lateral wall of abrasive material liquid container through rubber seal, prevents that the abrasive material liquid from spilling.
Firstly, a variable frequency ultrasonic power supply is switched on, current is conducted to a variable frequency transducer, piezoelectric ceramics in the variable frequency transducer converts input electric power into mechanical power, a variable amplitude rod amplifies mass point displacement of mechanical vibration, ultrasonic energy is concentrated on a small area, and ultrasound is transmitted to a container filled with abrasive liquid through a tool head. The alternating current power supply is switched on, the electromagnet generates suction to fix the cutter on the clamping device, the motor is controlled to control the cutter to change the angle, and the lifting device enables the cutting edge of the cutter to enter the abrasive liquid to be passivated by descending the cutter clamping mechanism.
The cutter may be circular as shown in fig. 5 or may be strip-shaped as shown in fig. 6. Wherein the tool comprises a clamping portion 71 and a cutting edge portion, the cutting edge portion of the tool comprises a cutting edge middle tip portion 72, a cutting edge left end portion 73 and a cutting edge right end portion 74.
A non-uniform passivation method for a cutting edge of a variable frequency ultrasonic cutter comprises the steps of respectively positioning a middle tip part of a cutting edge, a left end part of the cutting edge and a right end part of the cutting edge in abrasive liquid of an abrasive liquid container by rotating an electromagnet holder, and carrying out fractional passivation; non-uniform passivation is realized by controlling the passivation time and the passivation frequency of the middle tip part of the cutting edge, the left end part of the cutting edge and the right end part of the cutting edge.
When each part is passivated, the frequency conversion ultrasonic device firstly adopts 40-60KHz frequency to carry out primary passivation, and the grinding material liquid in the grinding material liquid container continuously impacts the surface of the cutting edge part of the cutter with huge impact force, so that the material on the surface of the cutting edge part of the cutter is crushed to achieve the purpose of removing; adopting different passivation time according to different cutter hardness; and then, finely passivating the cutting edge part of the cutter by adopting the frequency of 20-40KHz, so that the processing precision of the surface of the cutting edge part of the cutter is improved.
When the cutting edges of the cutter with small middle and large sides are passivated, the specific passivation method comprises the following steps.
Step 1, primary passivation.
And 2, fine passivation.
Step 23, finely passivating the left end part of the blade: and (3) driving the electromagnet holder and the cutter to ascend by the lifting device, rotating the electromagnet holder clockwise by 60 degrees, descending the left end part of the cutting edge into the grinding liquid, and performing primary passivation on the left end part of the cutting edge by adopting the method in the step 21.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (7)
1. A non-uniform passivation method for a cutting edge of a variable frequency ultrasonic cutter is characterized by comprising the following steps: the cutting edge part of the cutter comprises a cutting edge middle tip part, a cutting edge left end part and a cutting edge right end part, and the cutting edge middle tip part, the cutting edge left end part and the cutting edge right end part are respectively positioned in the abrasive liquid of the abrasive liquid container by rotating the electromagnet holder to carry out subsection passivation; non-uniform passivation is realized by controlling the passivation time and the passivation frequency of the middle tip part of the cutting edge, the left end part of the cutting edge and the right end part of the cutting edge;
when the cutting edges of the cutter with small middle and large two sides are passivated, the specific passivation method comprises the following steps:
step 1, primary passivation:
step 11, primary passivation of the middle tip part of the blade: controlling a motor to drive a cutter rotating shaft and an electromagnet holder to rotate clockwise by 30 degrees, descending the middle tip of the cutting edge into the abrasive liquid, and adjusting the ultrasonic frequency of a variable frequency ultrasonic device to be 40KHz and the ultrasonic time to be 20 min;
step 12, primary passivation of the right end part of the blade: the lifting device drives the electromagnet holder and the cutter to ascend, the electromagnet holder rotates 60 degrees anticlockwise, the right end part of the cutting edge descends into the grinding material liquid, and the method in the step 11 is adopted to adjust the ultrasonic frequency to be 60KHz to carry out primary passivation on the right end part of the cutting edge;
step 13, primary passivation of the left end part of the blade: the lifting device drives the electromagnet holder and the cutter to ascend, the electromagnet holder rotates clockwise by 60 degrees, the left end part of the cutting edge descends into the abrasive liquid, and the method of the step 11 is adopted, wherein the ultrasonic frequency is 60KHz, so that the initial passivation of the left end part of the cutting edge is carried out;
step 2, fine passivation:
step 21, finely passivating the middle tip part of the blade: the lifting device drives the electromagnet holder and the cutter to ascend, a motor is controlled to drive the cutter rotating shaft and the electromagnet holder to rotate clockwise by 30 degrees, the middle tip of the cutting edge descends into the grinding material liquid, the ultrasonic frequency of the variable frequency ultrasonic device is adjusted to be 20KHz, and the ultrasonic time is 10 min;
step 22, finely passivating the right end part of the blade: the lifting device drives the electromagnet holder and the cutter to ascend, the electromagnet holder rotates 60 degrees anticlockwise, the right end part of the cutting edge descends into the grinding material liquid, and the method in the step 21 is adopted to carry out primary passivation on the right end part of the cutting edge;
step 23, finely passivating the left end part of the blade: and (3) driving the electromagnet holder and the cutter to ascend by the lifting device, rotating the electromagnet holder clockwise by 60 degrees, descending the left end part of the cutting edge into the grinding liquid, and performing primary passivation on the left end part of the cutting edge by adopting the method in the step 21.
2. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter according to claim 1, characterized in that: the variable frequency ultrasonic device firstly adopts the frequency of 40-60KHz to carry out primary passivation when each part is passivated, and the abrasive liquid in the abrasive liquid container continuously impacts the surface of the cutting edge part of the cutter with huge impact force, so that the material on the surface of the cutting edge part of the cutter is crushed to achieve the purpose of removing; adopting different passivation time according to different cutter hardness; and then, finely passivating the cutting edge part of the cutter by adopting the frequency of 20-40KHz, so that the processing precision of the surface of the cutting edge part of the cutter is improved.
3. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter as claimed in claim 2, characterized in that: the type of abrasive liquid can be selected autonomously according to the hardness of the tool to be passivated.
4. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter according to claim 1, characterized in that: passivating the cutting edge of the cutter by adopting a variable frequency ultrasonic cutter cutting edge non-uniform passivating device, wherein the variable frequency ultrasonic cutter cutting edge non-uniform passivating device comprises a variable frequency ultrasonic device, a cutter clamping device, an angle rotating device, a lifting device and a grinding material liquid container;
the grinding fluid container is filled with grinding fluid, the cutter clamping device is arranged above the grinding fluid container and comprises an electromagnet holder and an alternating current power supply electrically connected with the electromagnet holder, and the bottom of the electromagnet holder is provided with a clamping bayonet which can be spliced with the clamping part of the cutter; when the alternating current power supply is switched on, the clamping bayonet of the electromagnet holder has electromagnetic attraction, and the clamping part of the cutter is fixed in the clamping bayonet of the electromagnet holder in an adsorption manner;
the angle rotating device is connected with the electromagnet holder, and the electromagnet holder can rotate at a left and right set angle under the driving of the angle rotating device;
the angle rotating device and the electromagnet holder can realize synchronous lifting of height under the action of the lifting device;
the frequency conversion ultrasonic device comprises a frequency conversion ultrasonic power supply, a frequency conversion energy converter, an amplitude transformer and a tool head which are coaxially and sequentially arranged; wherein, the frequency conversion transducer is connected with frequency conversion supersound power, and the instrument head stretches into in the abrasive material liquid container.
5. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter as claimed in claim 4, characterized in that: the lifting device is a lifting platform.
6. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter as claimed in claim 5, characterized in that: the angle rotating device comprises a control motor and a cutter rotating shaft; the control motor is installed on the elevating platform, and the motor shaft of control motor is connected with the cutter rotation axis through the shaft coupling, and the other end of cutter rotation axis is connected with the electro-magnet holder.
7. The non-uniform passivation method of the cutting edge of the frequency conversion ultrasonic cutter as claimed in claim 6, characterized in that: the middle part cover of cutter rotation axis is equipped with the bearing, and the bearing is installed on the bearing frame, and the bearing frame is installed on the elevating platform.
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| JPH11197946A (en) * | 1998-01-13 | 1999-07-27 | Isuzu Motors Ltd | Abrasive grain flow electrolytic polishing method and its working device |
| JP2012043825A (en) * | 2010-08-12 | 2012-03-01 | Disco Abrasive Syst Ltd | Wafer processing method |
| CN102658507B (en) * | 2012-04-19 | 2014-11-05 | 厦门钨业股份有限公司 | Flexible passivating processing method for superhard cutting tool and flexible passivating processing device thereof |
| CN105643373A (en) * | 2016-01-28 | 2016-06-08 | 江门市骏杰刀具科技有限公司 | Method for prolonging service life of superhard tool and superhard tool passivation device |
| CN205415145U (en) * | 2016-03-18 | 2016-08-03 | 曾凡之 | Carbide blade ultrasonic wave passivating device |
| CN105710735A (en) * | 2016-03-18 | 2016-06-29 | 曾凡之 | Ultrasonic passivating device and method for carbide blade |
| CN106001724B (en) * | 2016-05-18 | 2018-11-23 | 盐城工学院 | A kind of processing unit (plant) of the hard rotation Milling Machining cutter of the non-homogeneous passivation of cutting edge |
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