CN201988750U - Ultrasonic impact drill - Google Patents
Ultrasonic impact drill Download PDFInfo
- Publication number
- CN201988750U CN201988750U CN2011200098730U CN201120009873U CN201988750U CN 201988750 U CN201988750 U CN 201988750U CN 2011200098730 U CN2011200098730 U CN 2011200098730U CN 201120009873 U CN201120009873 U CN 201120009873U CN 201988750 U CN201988750 U CN 201988750U
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- CN
- China
- Prior art keywords
- transducer
- drill
- ultrasonic
- drill bit
- ultrasonic impact
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- Expired - Fee Related
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Abstract
The utility model discloses an ultrasonic impact drill which comprises a drill body and a drill bit, wherein an ultrasonic generator and an energy transducer are also arranged in the drill body and electrically connected with each other by a cable; an amplitude transformer is arranged between the energy transducer and the drill bit; and a big end of the amplitude transformer is fixedly connected with the energy transducer while a small end of the amplitude transformer is connected with the drill stem end portion of the drill bit. Compared with the prior art, the ultrasonic impact drill has the advantages of no cracking and falling phenomenon during drilling fragile materials, very small drilling noise and zero noise pollution. Unexpected impact drilling effects on the fragile materials are obtained.
Description
Technical field
The utility model relates to percussion drill, and especially a kind of ultrasonic impact bores.
Background technology
Percussion drill is a kind of boring bar tool of using always.Yet there is following defective in existing percussion drill: the one, when fragile material is holed, can produce fragmentation, obscission; The 2nd, noise is very big.This is a percussion drill boring difficult problem that is always perplexing people.
The utility model content
The purpose of this utility model is: provide a kind of ultrasonic impact to bore, can not produce fragmentation, obscission when fragile material is holed, and boring sound is very little, does not have noise pollution.
For achieving the above object, the utility model can be taked following technical proposals:
A kind of ultrasonic impact of the utility model bores, and comprises drill body, and drill bit also is provided with ultrasonic generator and transducer in described drill body, and described ultrasonic generator and transducer are electrically connected by cable; Be provided with the luffing bar between described transducer and the drill bit, the big end of this luffing bar is fixedlyed connected with transducer, and small end is connected with the drill rod end of drill bit.
Described transducer is the piezo-electric effect transducer, and the thickness that constitutes the crystal wafer of this piezo-electric effect transducer is 1/4th of ultrasonic wave wavelength.
Described transducer is a magnetostrictive transducer.
Described luffing bar small end longitudinal section is 1:6-1:10 with the ratio of big end longitudinal section area.
Compared with prior art the beneficial effects of the utility model are: owing to adopted ultrasonic wave as power, promote drill bit with high velocity shock fragile material, during impact, ultrasonic generator produces the nearly high-frequency alternating current more than 16000 times of vibrations per second, produce mechanical oscillation on the transducer with the electrical current same frequency, drive drill bit and do ultrasonic vibration and impact, fragile material enough produces good crushing effect under high-frequency impact force action, can not produce fragmentation, obscission; And owing to adopted transducer and produced mechanical oscillation through the luffing bar, do not have the transmission bump between the existing percussion drill machinery drive disk assembly, boring sound is very little, does not have noise pollution.Obtained beyond thought percussive drilling effect to fragile material.
Further beneficial effect is: when the ratio of described luffing bar small end longitudinal section and big end longitudinal section area is, the amplitude of described luffing bar small end is 0.05 to 0.1 millimeter, can produce the best percussive drilling effect to fragile material: promptly can not produce fragmentation, obscission.
The utility model is simple in structure, and cost is low, high efficiency.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of ultrasonic impact of the utility model bores, and comprises drill body, drill bit 5, also be provided with ultrasonic generator 1 and transducer 3 in described drill body, described transducer 3 is the piezo-electric effect transducer, and the thickness that constitutes the crystal wafer of this piezo-electric effect transducer is 1/4th of ultrasonic wave wavelength; Described ultrasonic generator 1 and transducer 3 are electrically connected by cable 2; Be provided with luffing bar 4 between described transducer 3 and the drill bit 5, the big end of this luffing bar 4 is fixedlyed connected with transducer 3, and small end is connected with the drill rod end of drill bit 5, and the ratio of these luffing bar 4 small end longitudinal sections and big end longitudinal section area is 1:8.The utility model also is provided with the control device that is used to regulate supersonic generator 1.
The effect of ultrasonic generator 1 is to change industrial-frequency alternating current into supersonic oscillations that certain power output is arranged, makes the required energy of double vibrations so that vibrating head to be provided.Its basic demand is: power output and frequency are adjustable continuously within the specific limits, reliable operation.
The effect of transducer 3 is to convert the high-frequency electrical vibration to mechanical oscillation.Can adopt two kinds of methods of piezo-electric effect and magnetostrictive effect at present.Wherein: (1) piezo-electric effect transducer: quartz crystal, barium titanate (BaTiO
3) and lead zirconate titanate (ZrPbTiO
3) wait material certain voltage in addition on their two interfaces, then will produce certain mechanically deform, this phenomenon is called " piezo-electric effect ".If the two sides adds the alternating voltage of per second more than 16000 times, then this material produces the dilatation of high frequency, and the medium around making is done ultrasonic vibration.In order to obtain maximum ultrasonic intensity, should make transistor be in resonance state, when crystal wafer thickness is that four of ultrasonic wavelength/for the moment, the vibration of generation is ideal.(2) magnetostrictive transducer: materials such as iron, cobalt, nickel and alloy thereof and iron oxysome, its length can or be stretched or the phenomenon that contracts is called magnetostrictive effect along with the intensity in magnetic field of living in.Magnetostrictive transducer can be divided into metal and ferritic two classes again.Metal transducer mechanical strength height, that the unit are width of cloth is penetrated power is big, stable work in work, electroacoustic efficiency lower (30% ~ 40%).Can be used for big or middle power vibrator.Because magnetostrictive effect weakened when temperature raise, need to adopt Forced water cooling.The electroacoustic efficiency higher (＞80%) of the flexible transducer of ferrite mangneto, but mechanical strength is low, and it is little that the unit are width of cloth is penetrated power, can be used for the ultrasonic vibrator of small-power, can adopt air blast cooling or cooling naturally.
The effect of luffing bar 4 is that the amplitude of ultrasonic vibration that transducer is obtained is amplified, to obtain the ultrasonic needed amplitude that vibrates.Luffing bar 4 can amplify amplitude, is because it is a bar of variable cross-section, as shown in Figure 1.Vibrational energy by this each cross section of bar is constant (disregards to propagate and consume), and the little local energy density in cross section is big.The major parameter that characterizes luffing bar performance has: resonant frequency, displacement amplitude multiplication factor, shape factor, input impedance are with frequency and load variations characteristic etc.It is big that major requirement displacement amplitude multiplication factor is wanted, and input impedance is little with the variation of frequency and load.The material requirements acoustic resistance of luffing bar is little, fatigue strength is high.Commonly used 45,65Mn, 40Cr etc.
Claims (4)
1. a ultrasonic impact bores, and comprises drill body, and drill bit (5) is characterized in that: also be provided with ultrasonic generator (1) and transducer (3) in described drill body, described ultrasonic generator (1) and transducer (3) are electrically connected by cable (2); Be provided with luffing bar (4) between described transducer (3) and the drill bit (5), the big end of this luffing bar (4) is fixedlyed connected with transducer (3), and small end is connected with the drill rod end of drill bit (5).
2. ultrasonic impact according to claim 1 bores, and it is characterized in that: described transducer (3) is the piezo-electric effect transducer, and the thickness that constitutes the crystal wafer of this piezo-electric effect transducer is 1/4th of ultrasonic wave wavelength.
3. ultrasonic impact according to claim 1 bores, and it is characterized in that: described transducer (3) is a magnetostrictive transducer.
4. according to claim 1, or 2, or 3 described ultrasonic impacts bore, and it is characterized in that: described luffing bar (4) small end longitudinal section is 1:6-1:10 with the ratio of big end longitudinal section area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200098730U CN201988750U (en) | 2011-01-13 | 2011-01-13 | Ultrasonic impact drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200098730U CN201988750U (en) | 2011-01-13 | 2011-01-13 | Ultrasonic impact drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988750U true CN201988750U (en) | 2011-09-28 |
Family
ID=44665253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200098730U Expired - Fee Related CN201988750U (en) | 2011-01-13 | 2011-01-13 | Ultrasonic impact drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120269A (en) * | 2011-01-13 | 2011-07-13 | 绍兴文理学院 | Ultrasonic impact drill |
-
2011
- 2011-01-13 CN CN2011200098730U patent/CN201988750U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120269A (en) * | 2011-01-13 | 2011-07-13 | 绍兴文理学院 | Ultrasonic impact drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140113 |