CN111438569A - Portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle - Google Patents
Portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle Download PDFInfo
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- CN111438569A CN111438569A CN202010376433.2A CN202010376433A CN111438569A CN 111438569 A CN111438569 A CN 111438569A CN 202010376433 A CN202010376433 A CN 202010376433A CN 111438569 A CN111438569 A CN 111438569A
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- 238000003754 machining Methods 0.000 title claims abstract description 98
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- 239000000919 ceramic Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 12
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- 238000010146 3D printing Methods 0.000 claims description 4
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 238000010892 electric spark Methods 0.000 abstract description 28
- 239000000463 material Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005459 micromachining Methods 0.000 description 5
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Classifications
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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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/38—Influencing metal working by using specially adapted means not directly involved in the removal of metal, e.g. ultrasonic waves, magnetic fields or laser irradiation
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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
- B24B31/06—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 oscillating or vibrating containers
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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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle, which relates to the technical field of micro-special machining and comprises a power source module, a power transmission module and an electricity leading module, wherein the power source module comprises a power source and a connecting piece, and the power source is connected with the power transmission module through the connecting piece; the power transmission module comprises an insulating sleeve and a micro ultrasonic vibration system, the micro ultrasonic vibration system is arranged in the insulating sleeve, and the insulating sleeve is connected with the connecting piece; the electricity leading module is installed on the outer side of the insulating sleeve. The invention has compact structure, portability, excellent performance, convenience and practicability, and can realize micro ultrasonic machining, micro ultrasonic vibration assisted electric spark machining and micro ultrasonic vibration assisted electrolytic machining.
Description
Technical Field
The invention relates to the technical field of micro special machining, in particular to a portable micro ultrasonic or micro ultrasonic vibration auxiliary machining spindle.
Background
Ultrasonic machining is a machining method in which a tool or a workpiece is vibrated ultrasonically, and impact, polishing, hydraulic impact, and cavitation of an abrasive are generated in a liquid medium containing the abrasive or in a dry abrasive to remove a material, or ultrasonic vibration is applied to the tool or the workpiece in a certain direction to perform machining, or the workpieces are bonded to each other by ultrasonic vibration. The micro-ultrasonic processing is realized by reducing the sizes of the tool head and the abrasive particles and the amplitude value on the basis of the ultrasonic processing. The micro-ultrasonic processing technology is an important direction for the development of the ultrasonic processing technology to high precision and micronization; the micro-ultrasonic processing technology is suitable for the precise micro-manufacturing of various high-strength, high-temperature-resistant, wear-resistant and brittle material components such as semiconductors, optical glass, engineering ceramics and the like.
Micro electric discharge machining, also known as electric discharge machining or electroerosion machining, is a process in which pulsed spark discharge is continuously generated between a tool and a workpiece, and a metal material is eroded by utilizing instantaneous, local high temperature generated during the discharge. During the machining process, the tool does not contact the workpiece. The technology is widely applied to the micro-machining of hard and difficult-to-machine materials such as hard alloy, die steel, quenched steel, polycrystalline diamond and the like, and can also be used for the micro-machining of workpieces with low rigidity and complex surface shapes. Compared with the micro electric spark machining without the ultrasonic vibration assistance, the micro ultrasonic vibration-assisted micro electric spark machining has better advantages in the aspects of the discharge state of the micro electric spark, the machining efficiency, the machining precision, the material removal rate, the electrode abrasion, the surface roughness and the like. Firstly, the ultrasonic vibration can improve the discharge state in the micro electric spark machining process, can improve the material removal rate, reduce the relative loss rate of a tool electrode and improve the machining precision. And secondly, the ultrasonic vibration is beneficial to the circulation of the working fluid and the removal of fragments in the gap area, and the stirring effect caused by the vibration of the working fluid can even disperse the fragments and carbon particles in the gap area, so that short circuit and abnormal discharge are reduced, and the processing speed is finally improved.
Electrochemical micromachining is classified into electrochemical micromachining and electrogalvanizing, and is a special machining method for removing a workpiece material or plating a metal material thereon by a chemical reaction, and is now widely used for precision ultraprecise micromachining of irregular parts such as cylindrical parts, spline holes, internal gears, molds, valve plates, and the like. The micro ultrasonic vibration is applied to the micro electrolytic machining in an auxiliary manner, the micro ultrasonic machining effect assists in timely removing electrolytic products, and the micro ultrasonic vibration can effectively reduce the occurrence of short circuit in the electrolytic machining process; the micro-electrolytic machining is added with ultrasonic vibration to cause the electrolyte in a machining area to be disturbed, and the localized etching capability, the machining stability, the machining precision and the surface quality of a workpiece are improved.
The implementation bases of the micro ultrasonic machining, the micro ultrasonic vibration assisted micro electric spark machining and the micro ultrasonic vibration assisted micro electrolytic machining are the corresponding micro ultrasonic machining, the micro ultrasonic vibration assisted micro electric spark machining tool and the micro ultrasonic vibration assisted micro electrolytic machining tool, and the key core component of the micro ultrasonic machining and the micro ultrasonic vibration assisted machining tool is the corresponding main shaft. The functions of the micro-ultrasonic machining and the micro-ultrasonic vibration auxiliary machining main shaft which need to be realized have the following common points: the method comprises the steps of firstly, installing a micro ultrasonic vibration system on a main shaft, secondly, rotating the main shaft with high precision, and thirdly, introducing a micro electric spark power supply or a micro electrolysis power supply to a micro tool. At present, the micro ultrasonic machining or micro ultrasonic vibration-assisted machining is generally implemented by applying micro ultrasonic vibration to a workpiece and using a V-block main shaft driven by a motor as a main shaft of a machine tool, and the micro ultrasonic machining or micro ultrasonic vibration-assisted machining implemented in this way has the following problems: firstly, the workpiece is difficult to be arranged on the ultrasonic vibration workbench to realize the effective transmission of sound energy; secondly, the size of the workpiece is limited, and the micro ultrasonic worktable with the size exceeding a certain size cannot be driven; thirdly, the adjustable range of the rotating speed of the main shaft driven by the motor is limited, the rotating speed is not high, generally 0-5000r/min, and the wide adjustable range and high-speed rotating processing are difficult to realize; fourthly, the processing device is relatively complex and the structure is not very compact; fifthly, the main shaft and the machine tool body cannot be well insulated electrically, and the machining efficiency and the machining quality are influenced.
Therefore, it is desirable to provide a novel portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle to solve the above problems in the prior art.
Disclosure of Invention
The invention aims to provide a portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle, which solves the problems in the prior art, has compact and portable structure, excellent performance, convenience and practicability, and can realize micro-ultrasonic machining, micro-ultrasonic vibration auxiliary electric spark machining and micro-ultrasonic vibration auxiliary electrolytic machining.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle, which comprises a power source module, a power transmission module and an electricity leading module, wherein the power source module comprises a power source and a connecting piece, and the power source is connected with the power transmission module through the connecting piece; the power transmission module comprises an insulating sleeve and a micro ultrasonic vibration system, the micro ultrasonic vibration system is arranged in the insulating sleeve, and the insulating sleeve is connected with the connecting piece; the electricity leading module is installed on the outer side of the insulating sleeve.
Preferably, the power source adopts a BM320F electric spindle.
Preferably, the connecting piece is T type switching metalwork, the tip of T type switching metalwork is installed on the BM320F electricity main shaft, the main aspects middle part of T type switching metalwork is provided with the unthreaded hole and has a bolt hole that the level runs through for with insulating sleeve's upper end is connected.
Preferably, the insulating sleeve is integrally formed by printing P L A plastic in a 3D mode, and the insulating sleeve and the T-shaped adapter metal piece are coaxially arranged.
Preferably, the insulating sleeve is of a step shape, an optical axis is arranged at the upper part of the insulating sleeve and is used for being matched with an optical hole at the large end of the T-shaped switching metal piece, and a bolt hole is arranged on the optical axis and is used for being matched with the bolt hole at the large end of the T-shaped switching metal piece; a through hole is formed in the middle stepped shaft of the insulating sleeve and used for leading in; the lower part of the insulating sleeve is provided with a conical stepped hole for mounting the superfine ultrasonic vibration system.
Preferably, the micro-ultrasonic vibration system comprises a rear matching block, a piezoelectric ceramic piece, a front matching block, an amplitude transformer, a tool chuck and a tool which are sequentially connected from top to bottom.
Preferably, the rear matching block, the piezoelectric ceramic piece, the front matching block and the amplitude transformer are connected together through a stud bolt; the amplitude transformer is provided with a nodal surface which is fixed in a stepped hole at the lower part of the insulating sleeve; the lower end of the amplitude transformer is fixedly provided with the tool chuck through a taper fit bolt, and the tool is arranged in the tool chuck.
Preferably, the power leading module comprises a slip ring and a slip ring support, an inner ring of the slip ring is sleeved in an optical axis of the insulating sleeve and is fastened through 4 slip ring inner ring fastening bolts; the slip ring is installed on the slip ring support, and a slip ring rotation stopping sheet of the outer ring of the slip ring is fixed on the slip ring support through a rotation stopping sheet fastening bolt.
Preferably, the slip ring support is integrally formed by printing P L A plastic 3D, and two wing plates are arranged at the top of the slip ring support and are spread and fixed on the BM320F electric spindle through bolts and nuts.
Compared with the prior art, the invention has the following technical effects:
1. the NSK electric main shaft is used as a power source, the rotating speed adjusting range of the electric main shaft is wide, and the main shaft can rotate at a high speed in micro ultrasonic machining and micro ultrasonic vibration auxiliary machining.
2. The insulating sleeve and the slip ring support piece which are printed in a 3D mode enable the electric spindle to be isolated from an electric leading tool and a micro ultrasonic vibration system, the structure is compact, and good electric insulation can be achieved.
3. Insulating sleeve prints integrated into one piece through 3D, and the optical axis part of upper end is connected with T type switching metalwork through transition fit, and the lower extreme passes through tapering and the cooperation of fine ultrasonic vibration system, can guarantee high gyration precision and processing stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a cross-sectional view of a T-shaped transition metal piece according to the present invention;
FIG. 2 is a schematic structural view of a T-shaped transition metal piece according to the present invention;
FIG. 3 is a cross-sectional view of the insulative sleeve of the present invention;
FIG. 4 is a schematic view of the structure of the insulating sleeve of the present invention;
FIG. 5 is a schematic structural view of a micro-ultrasonic vibration system according to the present invention;
FIG. 6 is a schematic structural diagram of a portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to the present invention;
in the figure, 1, BM320F electric main shaft; 2. a slip ring support; 3. a nut; 4. a bolt; 5. a T-shaped switching metal piece; 6. a through bolt; 7. a slip ring inner ring fastening bolt; 8. a slip ring; 9. the rotation stopping sheet is fastened with a bolt; 10. a slip ring rotation-stop sheet; 11. mounting bolts on the joint surfaces; 12. an insulating sleeve; 13. a micro ultrasonic vibration system; 14. a rear matching block; 15. piezoelectric ceramic plates; 16. a front matching block; 17. a stud bolt; 18. an amplitude transformer; 19. nodal surface; 20. a tool chuck; 21. a tool.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1 to 6, the present embodiment provides a portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle, including a power source module, a power transmission module and an electricity guiding module, where the power source module includes a power source and a connecting member, and the power source is connected to the power transmission module through the connecting member; the power transmission module comprises an insulating sleeve and a micro ultrasonic vibration system, the micro ultrasonic vibration system is arranged in the insulating sleeve, and the insulating sleeve is connected with the connecting piece; the electricity leading module is installed on the outer side of the insulating sleeve.
In the embodiment, the power source adopts a BM320F electric spindle 1, and the connecting piece adopts a T-shaped adapter metal piece 5; the BM320F electric spindle is produced by NSK in Japan, the rotating speed of the BM320F electric spindle is continuously adjustable at 80000r/min, a T-shaped switching metal piece 5 is shown in figures 1 and 2, the diameter of a small end is 3.175mm, the small end is installed on the BM320F electric spindle, and a large end of the T-shaped switching metal piece is provided with a light hole and a bolt hole which horizontally penetrates through the light hole and is respectively used for being connected with an optical axis at the upper end of an insulating sleeve and the bolt hole which penetrates through the light hole.
In this embodiment, as shown in fig. 3-4, the insulating sleeve 12 is formed by printing P L a plastic 3D in an integral manner, the upper half portion has an optical axis matching with the optical aperture of the large end of the T-shaped adapter metal part 5, and has a horizontal bolt hole matching with the bolt hole of the large end of the T-shaped adapter metal part, the matching between the large end of the T-shaped adapter metal part 5 and the optical axis of the insulating sleeve 12 is transition matching, and the gap is close to 0, so that the coaxiality between the two can be ensured.
A through hole is formed in the middle stepped shaft of the insulating sleeve 12 and used for leading in; the lower half part of the insulating sleeve 12 is provided with a stepped hole with a certain tapered inlet for installing the superfine ultrasonic vibration system 13, and the coaxiality requirement of the lower stepped hole and the upper optical axis needs to be ensured. The entrance of the stepped hole is provided with a certain taper, the taper of the stepped hole is equal to the taper on the nodal surface 19 of the superfine ultrasonic vibration system 13, the coaxiality of the insulating sleeve 12 and the superfine ultrasonic vibration system 13 is ensured by the matching of the tapered holes, and the requirement of ensuring the coaxiality of the tool 21 and the electric spindle 1 of the BM320F is met.
In the embodiment, the power leading module comprises a slip ring 8 and a slip ring support 2, wherein the inner ring of the slip ring 8 is sleeved in the optical axis at the upper end of the insulating sleeve 12 and is fastened through 4 slip ring inner ring fastening bolts 7, so that the slip ring can synchronously rotate along with the optical axis; the slip ring 8 is placed on the slip ring support 2, and a slip ring rotor plate 10 on the outer ring of the slip ring 8 is fixed on the slip ring support 2 through a rotor plate fastening bolt 9.
The slip ring 8 can realize the transmission of 3 paths of electric energy, wherein 2 paths are used for the transmission of the electric energy of the ultrasonic power supply; and the other path is used for transmitting one electrode of electric energy of a micro electric spark power supply or a micro electrolysis power supply to the tool.
The 2 routes of the route for the electric energy of the ultrasonic power supply are as follows: the method comprises the steps of arranging a slide ring outer ring, a slide ring inner ring, a slide ring support threading hole, a threading hole at a middle stepped shaft of an insulating sleeve, and a piezoelectric ceramic piece positive electrode and a piezoelectric ceramic piece negative electrode in a superfine ultrasonic vibration system. The route path of the other path of electric energy is as follows: the tool comprises a slip ring outer ring, a slip ring inner ring, a slip ring support threading hole, a threading hole at the middle stepped shaft of an insulating sleeve, a nodal plane threading hole and a tool.
The whole slip ring support 2 is 3D printed, two wing plates at the upper part of the slip ring support are installed on the BM320F electric spindle 1 and are fixedly screwed and spread on the BM320F electric spindle 1 through a bolt 4 and a nut 3; the lower part of the slip ring is used for placing a slip ring 8, and a slip ring rotor plate 10 on the outer ring of the slip ring 8 is fixed on a slip ring support through a rotor plate fastening bolt 9.
In the present embodiment, as shown in fig. 5, the fine ultrasonic vibration system 13 mainly includes a rear matching block 14, a piezoelectric ceramic plate 15, a front matching block 16, a stud bolt 17, a horn 18, a tool holder 20, and a tool 21. The rear matching block, the piezoelectric ceramic piece, the front matching block and the amplitude transformer are connected together through a stud, the amplitude transformer is provided with a nodal surface 19, the amplitude on the nodal surface is zero, and the amplitude transformer is fixed in a stepped hole at the lower end of the insulating sleeve 12 through the nodal surface. The lower end of the horn is mounted by taper fitting bolt tightening to a tool holder 20, and a tool 21 is mounted in the tool holder 20. The piezoelectric ceramic piece 15 is driven by an ultrasonic power supply to vibrate at high frequency, and the ultrasonic vibration is transmitted to the tool 21 after the amplitude of the ultrasonic vibration is amplified by the amplitude transformer 18, so that the tool 21 does high-frequency ultrasonic vibration along the axial direction.
In the present embodiment, as shown in fig. 6, the upper end of the T-shaped transition metal piece 5 is fastened by an electric spindle chuck of the electric spindle 1 of BM320F, the lower end is connected with the insulating sleeve 12 by a bolt, and the micro-ultrasonic vibration system 13 is installed in a stepped hole at the lower end of the insulating sleeve 12 by a bolt; the slip ring 8 is placed on the slip ring support 2, the inner ring is sleeved on the optical axis of the insulating sleeve 12 and fastened through a bolt, and two wing plates on the top of the slip ring support 2 are screwed and unfolded through a bolt and a nut and are fixed on the electric spindle 1 of the BM 320F.
The present embodiment can be used by being mounted on a micro ultrasonic machine tool, a micro electric discharge machine tool, or a micro electrolytic machine tool, and can perform micro ultrasonic machining, micro ultrasonic vibration-assisted electric discharge machining, and micro ultrasonic vibration-assisted electrolytic machining.
Micro-ultrasonic machining embodiment:
a portable micro-ultrasonic machining spindle is mounted on a micro-ultrasonic machining machine tool, and a tool is mounted on the spindle through a tool chuck. Before the micro ultrasonic machining, the block/wire electrode electric spark grinding machining needs to be carried out on the tool, so that the machined micro tool can be ensured to have good coaxiality with the main shaft. When electric spark is used for online grinding, the anode of an electric spark power supply is electrified to a tool through a slip ring, and the tool is ground to a required micro size according to the machining requirement. During micro ultrasonic machining, a lead of a micro ultrasonic machining power supply is electrified to a piezoelectric ceramic chip in a micro ultrasonic vibration system through a slip ring, then the rotating speed required by a spindle is set through a BM320F electric spindle controller, the micro ultrasonic power supply is turned on, and the micro ultrasonic machining is carried out under the control of a control system.
The implementation mode of the electric spark machining assisted by the micro ultrasonic vibration comprises the following steps:
the portable micro ultrasonic vibration auxiliary electric spark machining main shaft is arranged on a micro electric spark machining machine tool, and a tool is arranged on the main shaft through a tool chuck. Before the micro ultrasonic vibration is used for assisting electric spark machining, block/wire electrode electric spark grinding machining needs to be carried out on the tool, so that the machined micro tool can be guaranteed to have good coaxiality with the main shaft. When electric spark is used for online grinding, the anode of an electric spark power supply is electrified to a tool through a slip ring, and the tool is ground to a required micro size according to the machining requirement. When the electric spark machining is assisted by the micro ultrasonic vibration, a lead of a micro ultrasonic machining power supply is electrified to a piezoelectric ceramic chip in a micro ultrasonic vibration system through a slip ring, a cathode of the micro electric spark power supply is electrified to a tool through the slip ring, and an anode of the micro electric spark power supply is connected to a workpiece; then, the rotational speed required by the spindle is set through the BM320F electric spindle controller, the micro-ultrasonic power supply and the micro-electric spark power supply are turned on, and the micro-ultrasonic vibration assisted electric spark machining is carried out under the control of the control system.
The embodiment of the micro-ultrasonic vibration assisted electrolytic machining comprises the following steps:
a portable micro ultrasonic vibration auxiliary electrochemical machining main shaft is arranged on a micro electrochemical machining machine tool, and a tool is arranged on the main shaft through a tool chuck. Before the electrochemical machining is assisted by the micro ultrasonic vibration, the block/wire electrode electric spark grinding machining needs to be carried out on the tool, so that the machined micro tool can be ensured to have good coaxiality with the main shaft. When electric spark is used for online grinding, the anode of an electric spark power supply is electrified to a tool through a slip ring, and the tool is ground to a required micro size according to the machining requirement. When the micro ultrasonic vibration assists in electrolytic machining, a lead of a micro ultrasonic machining power supply is electrified to a piezoelectric ceramic chip in a micro ultrasonic vibration system through a slip ring, a cathode of the micro electrolytic power supply is electrified to a tool through the slip ring, and an anode of the micro electrolytic power supply is connected to a workpiece; then setting the required rotating speed of the main shaft through the BM320F electric main shaft controller, turning on the micro-ultrasonic power supply and the micro-electrolysis power supply, and carrying out micro-ultrasonic vibration assisted electrochemical machining under the control of the control system.
In summary, the portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle provided by the invention takes a BM320F electric spindle produced by NSK as a power source, can realize continuous adjustment of 1000-80000r/min under high rotation precision, realizes wide adjustable range and high-speed rotary machining of micro-ultrasonic machining and micro-ultrasonic vibration auxiliary machining, adopts an insulated P L A material 3D printing for a slip ring support piece and a sleeve, can realize integrated printing and forming of a complex structure, ensures that the spindle is portable, simple and compact in structure as a whole, adopts a 3D printing insulated sleeve structure for a power transmission device, realizes assembly with the spindle and a micro-ultrasonic vibration system respectively through integrated printing and forming, and realizes effective insulation with the electric spindle under the condition of ensuring high transmission precision.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A portable micro-ultrasonic or micro-ultrasonic vibration auxiliary processing main shaft is characterized in that: the power source module comprises a power source module, a power transmission module and an electricity leading module, wherein the power source module comprises a power source and a connecting piece, and the power source is connected with the power transmission module through the connecting piece; the power transmission module comprises an insulating sleeve and a micro ultrasonic vibration system, the micro ultrasonic vibration system is arranged in the insulating sleeve, and the insulating sleeve is connected with the connecting piece; the electricity leading module is installed on the outer side of the insulating sleeve.
2. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 1, characterized in that: the power source adopts a BM320F electric spindle.
3. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 2, characterized in that: the connecting piece is T type switching metalwork, the tip of T type switching metalwork is installed on the electricity main shaft of BM320F, the main aspects middle part of T type switching metalwork is provided with the unthreaded hole and has a bolt hole that the level runs through for with insulating sleeve's upper end is connected.
4. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 3, wherein the insulating sleeve is integrally formed by P L A plastic 3D printing, and the insulating sleeve and the T-shaped transition metal piece are coaxially arranged.
5. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 4, characterized in that: the insulating sleeve is in a step shape, and an optical axis is arranged at the upper part of the insulating sleeve and is used for being matched with an optical hole at the large end of the T-shaped switching metal piece; the optical axis is provided with a bolt hole which is used for being matched with a bolt hole at the large end of the T-shaped switching metal piece; a through hole is formed in the middle stepped shaft of the insulating sleeve and used for leading in; the lower part of the insulating sleeve is provided with a conical stepped hole for mounting the superfine ultrasonic vibration system.
6. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 5, characterized in that: the micro-ultrasonic vibration system comprises a rear matching block, a piezoelectric ceramic piece, a front matching block, an amplitude transformer, a tool chuck and a tool which are sequentially connected from top to bottom.
7. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 6, characterized in that: the rear matching block, the piezoelectric ceramic piece, the front matching block and the amplitude transformer are connected together through a stud; the amplitude transformer is provided with a nodal surface which is fixed in a stepped hole at the lower part of the insulating sleeve; the lower end of the amplitude transformer is fixedly provided with the tool chuck through a taper fit bolt, and the tool is arranged in the tool chuck.
8. The portable micro-ultrasonic or micro-ultrasonic vibration-assisted machining spindle according to claim 5, characterized in that: the power leading module comprises a slip ring and a slip ring support, wherein an inner ring of the slip ring is sleeved in an optical axis of the insulating sleeve and is fastened through 4 slip ring inner ring fastening bolts; the slip ring is installed on the slip ring support, and a slip ring rotation stopping sheet of the outer ring of the slip ring is fixed on the slip ring support through a rotation stopping sheet fastening bolt.
9. The portable micro-ultrasonic or micro-ultrasonic vibration assisted machining spindle of claim 8 is characterized in that the slip ring support is integrally formed by P L A plastic 3D printing, two wing plates are arranged at the top of the slip ring support, and the two wing plates are supported and fixed on the BM320F electric spindle through bolts and nuts.
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| CN202010376433.2A CN111438569A (en) | 2020-05-07 | 2020-05-07 | Portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle |
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| CN202010376433.2A CN111438569A (en) | 2020-05-07 | 2020-05-07 | Portable micro-ultrasonic or micro-ultrasonic vibration auxiliary machining spindle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112157324A (en) * | 2020-09-28 | 2021-01-01 | 安徽理工大学 | Electric leading device for high-speed rotating electric spindle and high-speed rotating electric machining device |
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