CN112935941A - Novel integrated single-excitation ultrasonic vibration knife handle - Google Patents
Novel integrated single-excitation ultrasonic vibration knife handle Download PDFInfo
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- CN112935941A CN112935941A CN202110311022.XA CN202110311022A CN112935941A CN 112935941 A CN112935941 A CN 112935941A CN 202110311022 A CN202110311022 A CN 202110311022A CN 112935941 A CN112935941 A CN 112935941A
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- amplitude transformer
- grinding wheel
- assembly
- hsk
- mounting groove
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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
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a novel integrated single-excitation ultrasonic vibration knife handle which comprises an HSK knife handle, a wireless transmission mechanism, a piezoelectric ceramic transducer, an amplitude transformer assembly and a grinding wheel fixing assembly, wherein the HSK knife handle is connected with the wireless transmission mechanism through a cable; the wireless transmission mechanism comprises a transmitting component and a receiving component, the transmitting component is fixedly connected with a main shaft of a machine tool motor, the receiving component is arranged at the top of the outer side of the HSK cutter handle, one end of the HSK cutter handle is provided with a mounting groove and a circuit through hole, the piezoelectric ceramic transducer is arranged in the mounting groove and is electrically connected with the receiving component; the amplitude transformer assembly comprises a primary amplitude transformer; one end of the primary amplitude transformer is connected with the HSK tool handle through a threaded fastener, and the other end of the primary amplitude transformer is connected with the secondary amplitude transformer; the grinding wheel fixing component comprises a grinding wheel, a pressing plate and a fastening bolt, the grinding wheel is arranged between the pressing plate and the secondary amplitude transformer, and the fastening bolt sequentially penetrates through the pressing plate, the grinding wheel and the secondary amplitude transformer and then is connected with the primary amplitude transformer.
Description
Technical Field
The invention relates to the field of machining, in particular to a novel integrated single-excitation ultrasonic vibration knife handle.
Background
Ultrasonic machining has the characteristics of energy concentration, instant action and quick cutting, and becomes the main form of precise and efficient machining of difficult-to-machine materials, a transducer converts frequency electric signals into high-frequency ultrasonic vibration by utilizing a piezoelectric inverse effect in the machining process, and transmits the vibration to a tool end through an amplitude transformer, so that intermittent contact cutting of a cutter and a workpiece is realized, cutting force, cutting heat and cutter abrasion can be effectively reduced, and machining quality and machining efficiency are improved.
However, the existing ultrasonic processing device has the characteristics of complex structure, large volume, serious heat generation, low integration degree and the like, the vibration form is mostly one-dimensional longitudinal vibration or two-dimensional elliptical vibration, the working conditions such as narrow deep groove grinding, thin plate cutting and the like which need the radial vibration of a grinding wheel or a saw blade are difficult to meet, and the research and development of the single-excitation ultrasonic knife handle which has a simple structure, is convenient to use and highly integrated and has the radial vibration form has great significance for the application and development of the ultrasonic processing technology in the fields of narrow deep groove grinding, thin plate cutting and the like.
Disclosure of Invention
The invention aims to solve the problems and provides a novel integrated single-excitation ultrasonic vibration knife handle which is simple in structure and convenient to use.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a novel integrated single-excitation ultrasonic vibration knife handle comprises an HSK knife handle, a wireless transmission mechanism, a piezoelectric ceramic transducer, an amplitude transformer assembly and a grinding wheel fixing assembly; the wireless transmission mechanism comprises a transmitting assembly and a receiving assembly, the transmitting assembly and the receiving assembly are oppositely arranged when the system works, a separation gap is arranged between the transmitting assembly and the receiving assembly, the transmitting assembly can be fixedly connected with a main shaft of a machine tool motor when the system works, the receiving assembly is annularly arranged at the top of the outer side of the HSK knife handle, one end of the HSK knife handle is provided with a mounting groove and a circuit through hole, the piezoelectric ceramic transducer is arranged in the mounting groove, and the piezoelectric ceramic transducer is electrically connected with the receiving assembly; the amplitude transformer assembly comprises a primary amplitude transformer, a secondary amplitude transformer and a threaded fastener; one end of the first-stage amplitude transformer is connected with one end of the HSK cutter handle, which is provided with a mounting groove, through a threaded fastener, the other end of the first-stage amplitude transformer is connected with one end of the second-stage amplitude transformer, the other end of the second-stage amplitude transformer is of an involute type expanding structure, and the end face of the other end of the second-stage amplitude transformer is provided with a first through hole in an annular array shape; the grinding wheel fixing component comprises a grinding wheel, a pressing plate and a fastening bolt, the grinding wheel is arranged between the pressing plate and the secondary amplitude transformer, a second through hole in an annular array shape is formed in the pressing plate, and one end of the fastening bolt penetrates through the pressing plate, the grinding wheel and the secondary amplitude transformer in sequence and then is connected with the primary amplitude transformer.
Furthermore, one end of the first-stage amplitude transformer, which is close to the HSK tool handle, is provided with a fixing flange, the fixing flange is embedded in the mounting groove, the threaded fastener is sleeved on the outer side of the first-stage amplitude transformer, one end of the threaded fastener is inserted into the mounting groove, and the outer side wall of the threaded fastener is in threaded connection with the inner side wall of the mounting groove.
Furthermore, a first limiting bulge is arranged at one end, close to the secondary amplitude transformer, of the primary amplitude transformer, a first limiting groove is arranged at one end, close to the primary amplitude transformer, of the secondary amplitude transformer, and when the secondary amplitude transformer is connected with the primary amplitude transformer, the first limiting bulge is embedded in the first limiting groove.
Furthermore, the secondary amplitude transformer is of a hollow structure, and a limiting boss is arranged at one end of the secondary amplitude transformer, which is far away from the primary amplitude transformer; the outer diameter of the limiting boss is matched with the inner diameter of the grinding wheel.
Furthermore, the piezoelectric ceramic transducer is formed by sequentially overlapping a plurality of piezoelectric ceramic blocks, and the plurality of piezoelectric ceramic blocks are mutually connected in parallel.
Furthermore, the transmitting assembly comprises a main edge protective sleeve and a main edge magnetic core arranged in the main edge protective sleeve; the receiving assembly comprises an auxiliary edge protective sleeve and an auxiliary edge magnetic core arranged in the auxiliary edge protective sleeve, the main edge protective sleeve and the auxiliary edge protective sleeve are both annularly sleeved outside the HSK cutter handle, the main edge protective sleeve and the auxiliary edge protective sleeve are oppositely arranged, a partition gap is arranged between the main edge protective sleeve and the auxiliary edge protective sleeve, and induction coils are wound on the outer sides of the main edge magnetic core and the auxiliary edge magnetic core.
Furthermore, a circuit through hole which enables the mounting groove to be communicated with the outside is formed in the side face of the HSK knife handle, a connecting wire is arranged in the circuit through hole, and two ends of the connecting wire are respectively connected with the piezoelectric ceramic block and the induction coil outside the secondary side magnetic core.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention can convert the electric signal received by the wireless transmission mechanism into high-frequency ultrasonic vibration through the piezoelectric ceramic transducer and convert the longitudinal ultrasonic vibration into the radial ultrasonic vibration of the grinding wheel through the primary amplitude transformer and the secondary amplitude transformer sequentially, and the structure is compactly integrated on the HSK knife handle, thereby improving the practicability of the invention, meanwhile, through the design of arranging the through hole on the end surface of one end of the secondary amplitude transformer and the pressure plate, the design can effectively inhibit the bending vibration of the output end and generate multi-point radial resonance on the circumference of the grinding wheel, obviously enhancing the radial vibration effect of the output end, and the radial amplitude of the output end can be increased to 2.8 mu m from 1.2 mu m before the hole is opened. On the other hand, the grinding wheel of different types can be replaced quickly according to the machining requirements, when the grinding wheel is replaced, only one end of the fastening bolt needs to be screwed out, the grinding wheel can be replaced selectively or the whole body formed by the direct pressing plate, the grinding wheel and the secondary amplitude transformer can be replaced, the flexibility is high, the application cost is reduced, and the machining efficiency is greatly improved; and when processing operation, wireless transmission mechanism can realize stable and contactless electric quantity transmission, and it has advantages such as high rotational speed, high accuracy, high stability, has extensive using value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the assembled structure of the present invention;
FIG. 3 is a cross-sectional structural view of the present invention;
fig. 4 is a schematic structural view of a secondary horn.
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 from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
As shown in fig. 1 to 4, the embodiment discloses a novel integrated single-excitation ultrasonic vibration knife handle, which comprises an HSK knife handle 1, a wireless transmission mechanism 2, a piezoelectric ceramic transducer 3, a horn assembly 4 and a grinding wheel fixing assembly 5; the HSK knife handle 1 is a common component in machining, and one end of the HSK knife handle is connected with a motor and used for transmitting power torque of the motor;
the wireless transmission mechanism 2 comprises a transmitting component 202 and a receiving component 201, the transmitting component 202 is fixedly connected with a main shaft of a machine tool motor when the system works, the receiving component 201 is arranged at the top of the outer side of the HSK knife handle 1, one end of the HSK knife handle 1 is provided with a mounting groove 101, the piezoelectric ceramic transducer 3 is arranged in the mounting groove 101, and the piezoelectric ceramic transducer 3 is electrically connected with the receiving component 201;
the horn assembly 4 comprises a primary horn 401, a secondary horn 402, a threaded fastener 403; one end of the primary amplitude transformer 401 is provided with a fixed flange 4011, the fixed flange 4011 is embedded in the mounting groove 101, and the piezoelectric ceramic transducer 3 in the mounting groove 101 is connected with one end of the primary amplitude transformer 401; the threaded fastener 403 is sleeved on the outer side of the primary amplitude transformer 401, one end of the threaded fastener 403 is inserted into the mounting groove 101, and the outer side wall of the threaded fastener 403 is in threaded connection with the inner side wall of the mounting groove 101; the other end of the primary horn 401 is provided with a first limiting protrusion 4012, one end of the secondary horn 402 close to the primary horn 401 is provided with a first limiting groove, and when the secondary horn 402 is connected with the primary horn 401, the first limiting protrusion 4012 is embedded in the first limiting groove; the secondary amplitude transformer 402 is of an involute type diameter-expanding structure, single longitudinal waves generated by a transducer can be diffused along an involute, and finally the conversion from longitudinal vibration to radial vibration is realized at the output end of the amplitude transformer, and the end face of the other end of the secondary amplitude transformer 402 is provided with a first through hole 4021 in an annular array shape, so that the design can effectively inhibit the bending vibration of the output end, multi-point radial resonance is generated at the circumference of a grinding wheel, the radial vibration effect of the output end is remarkably enhanced, and the radial amplitude of the output end can be increased to 2.8 mu m from 1.2 mu m before opening a hole; the design that the first limiting protrusion 4012 is matched with the first limiting groove facilitates the centering and positioning of the primary amplitude transformer 401 and the secondary amplitude transformer 402 during assembly;
the grinding wheel fixing component 5 comprises a grinding wheel 501, a pressing plate 502 and a fastening bolt 503, the secondary amplitude transformer 402 is of a hollow structure, and a limiting boss 4022 is arranged at one end, far away from the primary amplitude transformer 401, of the secondary amplitude transformer 402; the outer diameter of the limiting boss 4022 is matched with the inner diameter of the grinding wheel 501; the grinding wheel 501 is arranged between the pressure plate 502 and the secondary amplitude transformer 402, the pressure plate 502 is provided with a second through hole 5021 in an annular array shape, and one end of the fastening bolt 503 sequentially penetrates through the pressure plate 502, the grinding wheel 501 and the secondary amplitude transformer 402 and then is connected with the primary amplitude transformer 401. When the grinding wheel 501 is installed between the pressure plate 502 and the secondary amplitude transformer 402, the installation hole in the grinding wheel 501 is matched with the limiting boss 4022, so that the centering and positioning operations of the grinding wheel 501 are realized.
The pressure plate, the secondary amplitude transformer and the primary amplitude transformer are all provided with central through holes, and one end of the fastening bolt penetrates through the central through holes on the pressure plate and the secondary amplitude transformer and then is in threaded connection with the central through hole on the primary amplitude transformer, so that the tight connection among all the components is realized.
The piezoelectric ceramic transducer 3 is formed by sequentially overlapping a plurality of piezoelectric ceramic blocks, and the piezoelectric ceramic blocks are mutually connected in parallel. The mode has the characteristics of small volume, low energy consumption and low impedance. One end of the piezoelectric ceramic transducer extends into the central through hole at one end of the primary amplitude transformer and is tightly connected with the central through hole, so that longitudinal ultrasonic vibration can be transmitted to the primary amplitude transformer.
The emitting component 202 includes a main-side protective cover 2021 and a main-side magnetic core 2022 disposed in the main-side protective cover 2021; the receiving assembly 201 comprises an auxiliary edge protective sleeve 2011 and an auxiliary edge magnetic core 2012 arranged in the auxiliary edge protective sleeve 2011, and the transmitting assembly is connected with the receiving assembly through electromagnetic induction; the main edge protective sleeve 2021 and the auxiliary edge protective sleeve 2011 are both sleeved outside the HSK knife handle 1 in a ring shape, the main edge protective sleeve 2021 and the auxiliary edge protective sleeve 2011 are arranged oppositely, a partition gap is arranged between the main edge protective sleeve 2021 and the auxiliary edge protective sleeve 2011, and induction coils are wound outside the main edge magnetic core 2022 and the auxiliary edge magnetic core 2012. The wireless transmission device 2 transmits energy in an electromagnetic induction mode, can realize stable and non-contact ultrasonic energy transmission, has the advantages of high rotating speed, high precision, high stability and the like, and has wide application value.
The side surface of the HSK knife handle 1 is provided with a line through hole which enables the mounting groove 101 to be communicated with the outside, a connecting line is arranged in the line through hole, and two ends of the connecting line are respectively connected with the piezoelectric ceramic block and the induction coil on the outer side of the secondary side magnetic core 2012. The design of the circuit through hole can ensure that the piezoelectric ceramic transducer is electrically connected with the transmitting component, simultaneously improves the compactness of the whole structure and further improves the use effect of the piezoelectric ceramic transducer.
The invention can convert the electric signal received by the wireless transmission mechanism into high-frequency ultrasonic vibration through the piezoelectric ceramic transducer and convert the longitudinal ultrasonic vibration into the radial ultrasonic vibration of the grinding wheel through the primary amplitude transformer and the secondary amplitude transformer sequentially, and the structure is compactly integrated on the HSK knife handle, thereby improving the practicability of the invention, meanwhile, the bending vibration of the output end can be effectively inhibited through the design of arranging the through holes on the end surface of one end of the secondary amplitude transformer and the pressing plate, generating multi-point radial resonance on the circumference of the grinding wheel, obviously enhancing the radial vibration effect of the output end, and the radial amplitude of the output end can be increased to 2.8 mu m from 1.2 mu m before the hole is opened;
on the other hand, the grinding wheel of different types can be replaced quickly according to the machining requirements, when the grinding wheel is replaced, only one end of the fastening bolt needs to be screwed out, the grinding wheel can be replaced selectively or the whole body formed by the direct pressing plate, the grinding wheel and the secondary amplitude transformer can be replaced, the flexibility is high, the application cost is reduced, and the machining efficiency is greatly improved; and when processing operation, wireless transmission mechanism can realize stable and contactless electric energy transmission, and it has advantages such as high rotational speed, high accuracy, high stability, has extensive using value.
Claims (4)
1. The utility model provides a novel integrated form single excitation ultrasonic vibration handle of a knife which characterized in that: the device comprises an HSK knife handle, a wireless transmission mechanism, a piezoelectric ceramic transducer, an amplitude transformer assembly and a grinding wheel fixing assembly; the wireless transmission mechanism comprises a transmitting assembly and a receiving assembly, the transmitting assembly and the receiving assembly are oppositely arranged during working, partition gaps are formed in the transmitting assembly and the receiving assembly, the transmitting assembly is fixedly connected with a main shaft of a machine tool motor during working, the receiving assembly is annularly arranged at the top of the outer side of the HSK cutter handle, one end of the HSK cutter handle is provided with a mounting groove and a circuit through hole, the piezoelectric ceramic transducer is arranged in the mounting groove, and the piezoelectric ceramic transducer is electrically connected with the receiving assembly; the amplitude transformer assembly comprises a primary amplitude transformer, a secondary amplitude transformer and a threaded fastener; one end of the first-stage amplitude transformer is connected with one end of the HSK cutter handle, which is provided with a mounting groove, through a threaded fastener, the other end of the first-stage amplitude transformer is connected with one end of the second-stage amplitude transformer, the other end of the second-stage amplitude transformer is of an involute type expanding structure, and the end face of the other end of the second-stage amplitude transformer is provided with a first through hole in an annular array shape; the grinding wheel fixing component comprises a grinding wheel, a pressing plate and a fastening bolt, the grinding wheel is arranged between the pressing plate and the secondary amplitude transformer, a second through hole in an annular array shape is formed in the pressing plate, and one end of the fastening bolt penetrates through the pressing plate, the grinding wheel and the secondary amplitude transformer in sequence and then is connected with the primary amplitude transformer.
2. The novel integrated single-excitation ultrasonic vibration tool shank according to claim 1, wherein: one end of the first-stage amplitude transformer, which is close to the HSK cutter handle, is provided with a fixing flange, the fixing flange is embedded in the mounting groove, the threaded fastener is sleeved on the outer side of the first-stage amplitude transformer, one end of the threaded fastener is inserted into the mounting groove, and the outer side wall of the threaded fastener is in threaded connection with the inner side wall of the mounting groove.
3. A novel integrated single excitation ultrasonic vibration tool shank according to claim 2, wherein: the first limiting bulge is arranged at one end, close to the second-stage amplitude transformer, of the first-stage amplitude transformer, the first limiting groove is formed at one end, close to the first-stage amplitude transformer, of the second-stage amplitude transformer, and when the second-stage amplitude transformer is connected with the first-stage amplitude transformer, the first limiting bulge is embedded in the first limiting groove.
4. A novel integrated single excitation ultrasonic vibration tool shank according to claim 3, wherein: the secondary amplitude transformer is of a hollow structure, and a limiting boss is arranged at one end of the secondary amplitude transformer, which is far away from the primary amplitude transformer; the outer diameter of the limiting boss is matched with the inner diameter of the grinding wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110311022.XA CN112935941B (en) | 2021-03-24 | 2021-03-24 | Novel integrated single-excitation ultrasonic vibration knife handle |
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| CN202110311022.XA CN112935941B (en) | 2021-03-24 | 2021-03-24 | Novel integrated single-excitation ultrasonic vibration knife handle |
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| CN112935941A true CN112935941A (en) | 2021-06-11 |
| CN112935941B CN112935941B (en) | 2022-06-17 |
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2021
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