JP2006061847A - Apparatus for ultrasonic cleaning/deburring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for ultrasonic cleaning/deburring, capable of improving a cleaning/deburring effect more than usual, wherein an ultrasonic wave is radiated in a cleaning tank in which a material to be cleaned is dipped, to carry out cleaning/deburring of the materia to be cleaned. <P>SOLUTION: The apparatus for ultrasonic cleaning/deburring has the cleaning tank receiving a cleaning liquid, a cleaning-liquid supplying means for supplying the cleaning liquid to the cleaning tank, and an ultrasonic vibrator arranged in the cleaning tank, an oscillator for operating the ultrasonic vibrator, wherein the ultrasonic wave is radiated to the cleaning liquid from the ultrasonic vibrator to carry out cleaning and/or deburring of the material to be cleaned which is dipped in the cleaning liquid. In this apparatus, the cleaning-liquid supplying means has a magnetic-field generating apparatus operating a magnetic field to the cleaning liquid supplied, and a voltage generating circuit supplying a voltage to the magnetic-field generating apparatus, wherein the voltage generating circuit is controlled to repeat the state that the magnetic-field generating apparatus applies the magnetic field for the cleaning liquid and the state that it does not. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrasonic cleaning / deburring apparatus that performs cleaning and deburring of an object to be cleaned by radiating ultrasonic waves into a cleaning tank in which the object to be cleaned is immersed. The present invention relates to an ultrasonic cleaning / deburring device that can be improved.

  Normally, foreign matters such as oil and flux are adhered to the surface of mechanical parts and electronic parts in the manufacturing process, and burrs formed during processing remain, so these foreign substances were removed. Later, it is regarded as the final product.

  Conventionally, an ultrasonic cleaning method has been proposed as a method for removing deposits and burrs from such parts and the like. This method immerses the above-mentioned parts to be cleaned in a cleaning liquid such as water stored in a cleaning tank, and radiates ultrasonic waves into the cleaning liquid from an ultrasonic vibrator provided at the bottom of the cleaning tank. Then, the object to be cleaned and deburred are intended to be utilized by utilizing the action of cavitation generated in the cleaning liquid by the ultrasonic wave.

In the ultrasonic cleaning method, the cleaning and the deburring are performed by applying the shock wave generated when the above-described cavitation collapses to the surface of the object to be cleaned. However, these effects are improved. Therefore, some proposals have been made conventionally. For example, the following Patent Document 1 describes that a degassing unit that removes gas dissolved in the cleaning liquid supplied to the cleaning tank is provided, and an electrode plate that applies an electric field to the object to be cleaned is immersed in the cleaning liquid. Has been.
Japanese Patent No. 2558470

  However, in the conventional ultrasonic cleaning method described above, the water molecules of the cleaning liquid to be used form a cluster structure, and the ultrasonic waves are emitted in this state, so that a large cluster of molecules having a cluster structure is cleaned. There is a problem that the surface of the object to be cleaned is scratched if the ultrasonic wave that is radiated too much becomes strong. For this reason, there are cases where ultrasonic waves having a force for sufficiently removing foreign matters such as oil and flux adhering to the object to be cleaned cannot be emitted.

  Further, when performing the above-described deburring, it is necessary to make the ultrasonic wave stronger than in the case of the above cleaning, but the conventional method has a small removal force and cannot sufficiently remove the deburring. There was a problem.

  Therefore, the conventionally proposed ultrasonic cleaning methods are not sufficiently effective in cleaning and deburring.

  Therefore, an object of the present invention is an ultrasonic cleaning / deburring apparatus that performs cleaning and deburring of an object to be cleaned by radiating ultrasonic waves into a cleaning tank in which the object to be cleaned is immersed. It is an object of the present invention to provide an ultrasonic cleaning / deburring device capable of improving the effectiveness of cleaning and deburring.

  In order to achieve the above object, one aspect of the present invention provides a cleaning tank for storing a cleaning liquid, a cleaning liquid supply means for supplying the cleaning liquid to the cleaning tank via a cleaning liquid channel, and a cleaning tank. An ultrasonic vibrator provided, and an oscillator for operating the ultrasonic vibrator, radiating ultrasonic waves from the ultrasonic vibrator to the cleaning liquid, and the object to be cleaned immersed in the cleaning liquid In an ultrasonic cleaning / deburring apparatus that performs cleaning and / or deburring, a magnetic field generator in which the cleaning liquid supply means applies a magnetic field to the supplied cleaning liquid, and a voltage generation circuit that supplies a voltage to the magnetic field generator And the voltage generating circuit is controlled so that the magnetic field generator repeats a state in which a magnetic field is applied to the cleaning liquid and a state in which no magnetic field is applied. Therefore, according to the present invention, the cluster structure is subdivided by the action of the magnetic field before the cleaning liquid is supplied to the cleaning tank. Therefore, in the cleaning tank, it becomes difficult to scratch the surface of the object to be cleaned, and the ultrasonic wave to be emitted can be made stronger than before, thereby improving the effectiveness of cleaning and deburring. It becomes possible.

  Furthermore, in the above invention, a preferred aspect thereof is characterized in that the voltage generation circuit supplies a pulse voltage to the magnetic field generator.

  Furthermore, in the above invention, a preferable aspect is that the magnetic field generator is installed in the middle of the cleaning liquid flow path, and has a disk-like shape having a hollow portion for penetrating the cleaning liquid flow path at the center. It has a main body and at least one electromagnet provided on the main body.

  Furthermore, in the above invention, a preferred aspect is characterized in that a line segment connecting the centers of both poles of the electromagnet is along a straight line on the cross section passing through the center of the cross section of the disk-shaped main body.

  In the above invention, a preferred aspect is characterized in that there are a plurality of electromagnets fitted to the main body, and the plurality of electromagnets are all electrically connected in series or all connected in parallel. To do.

  In the above invention, a preferred aspect is characterized in that the cleaning liquid flow path is a cleaning liquid supply pipe.

  Furthermore, in the above invention, a preferred aspect is characterized in that a plurality of the magnetic field generators are installed at a predetermined interval in the middle of the cleaning liquid flow path.

  In the above invention, a preferred aspect is that the plurality of magnetic field generators are arranged around the central axis of the disk-shaped main body between the disk-shaped main bodies where the positions of the electromagnets provided in the respective disk-shaped main bodies are adjacent. It is characterized by the fact that they are mutually offset in the direction of rotation.

  Furthermore, in the above invention, one aspect is that, while three of the magnetic field generators are installed and one of the magnetic field generators is in a state of applying a magnetic field, the other two are in a state of not applying a magnetic field. As described above, the voltage generation circuit is controlled.

  In the above invention, a preferred aspect is characterized in that three or more of the magnetic field generators are installed at a predetermined interval in the middle of the cleaning liquid flow path.

  In order to achieve the above object, another aspect of the present invention provides a cleaning tank containing a cleaning liquid, an ultrasonic vibrator provided in the cleaning tank, and applying a voltage to the ultrasonic vibrator. An ultrasonic wave that operates the ultrasonic vibrator and radiates ultrasonic waves from the ultrasonic vibrator to the cleaning liquid to perform cleaning and / or deburring of an object to be cleaned immersed in the cleaning liquid. In the cleaning / deburring apparatus, the oscillator applies a voltage having a multiwave waveform obtained by adding a wave having a frequency higher than the frequency of the fundamental wave to the fundamental wave having a predetermined frequency to the ultrasonic transducer. . Thereby, the effect that the effectiveness of washing and deburring can be improved can be obtained.

  In order to achieve the above object, still another aspect of the present invention provides a cleaning tank for storing a cleaning liquid, an ultrasonic vibrator provided in the cleaning tank, and applying a voltage to the ultrasonic vibrator. An ultrasonic oscillator that operates the ultrasonic vibrator, and radiates ultrasonic waves from the ultrasonic vibrator to the cleaning liquid to perform cleaning and / or deburring of an object to be cleaned immersed in the cleaning liquid. In the ultrasonic cleaning / deburring apparatus, the oscillator generates a rectangular wave voltage having a frequency of a voltage applied to the ultrasonic transducer, and converts the generated rectangular wave voltage into a sine wave voltage. And a coil to which the converted voltage is applied to the ultrasonic transducer, and the resonance frequency determined by the inductance value of the coil and the capacitance of the ultrasonic transducer is Ultrasonic vibrator Equal Such values to the frequency of the voltage to be pressurized, it is different from the. Thereby, the effect that the effect of deburring can be improved especially can be acquired.

  Further objects and features of the present invention will become apparent from the embodiments of the invention described below.

  Embodiments of the present invention will be described below with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention. In the drawings, the same or similar elements are denoted by the same reference numerals or reference symbols.

  FIG. 1 is a schematic configuration diagram according to an embodiment of an ultrasonic cleaning / deburring apparatus to which the present invention is applied. An ultrasonic cleaning / deburring apparatus 100 shown in FIG. 1 is an apparatus for cleaning and / or deburring an object to be cleaned immersed in the cleaning water 61 by radiating ultrasonic waves into the cleaning water 61. The ultrasonic cleaning / deburring device 100 is provided with a cleaning water treatment device 43 for decomposing the cluster structure of cleaning water, and is characterized by the ultrasonic oscillator 50. It is intended to improve efficacy.

  As shown in FIG. 1, the ultrasonic cleaning / deburring device 100 is mainly composed of a cleaning water supply device 40, an oscillator 50, a cleaning tank 60, and an ultrasonic transducer 70. The cleaning tank 60 is a tank that stores therein cleaning water 61 for cleaning the article 80 to be cleaned. The cleaning water supply device 40 is a device for supplying cleaning water 61 to the cleaning tank 60. As shown in FIG. 1, a cleaning water supply pipe 41, a cleaning water pump 42, a cleaning water treatment device 43, and the like are provided. Is provided. The cleaning water treatment device 43 is a device for decomposing the cluster structure of the cleaning water 61 supplied to the cleaning tank 60, and details thereof will be described later.

  The oscillator 50 is a device for applying a voltage having a predetermined waveform to the ultrasonic transducer 70, and the specific contents thereof will be described later. Next, the ultrasonic transducer 70 is a device that is provided in the lower part or the side surface of the cleaning tank 60 and oscillates by the voltage applied from the oscillator 50 to emit ultrasonic waves into the cleaning water 61. As shown in FIG. 1, the ultrasonic transducer 70 includes a plurality of vibration elements 71, and the ultrasonic waves are radiated by vibrating these elements.

  In the ultrasonic cleaning / deburring apparatus 100 configured as described above, mechanical parts and electronic parts that require cleaning and deburring are placed in the cleaning tank 60 as the object to be cleaned 80. The object to be cleaned 80 does not need to be a metal, and any object that needs to be cleaned and deburred may be used. When cleaning or deburring, a predetermined amount of cleaning water 61 is stored in the cleaning tank 60, and the cleaning water 61 is constantly circulated by the cleaning water supply equipment 40 during cleaning and deburring. ing. Specifically, the cleaning water 61 extracted from the cleaning tank 60 is guided to the cleaning water pump 42 through the cleaning water supply pipe 41 and pumped up to the cleaning water treatment device 43 from there. In the cleaning water treatment apparatus 43, the cleaning water 61 is supplied to the cleaning tank 60 in a state where the molecular mass is subdivided as described above. In this embodiment, the cleaning water 61 is used as the cleaning liquid of the ultrasonic cleaning / deburring apparatus. However, the cleaning liquid may be a cleaning liquid containing a so-called detergent instead of mere water.

  Further, when cleaning the object 80 and deburring, as described above, the ultrasonic wave is radiated into the cleaning water 61, so that the oscillator 50 is activated, and the voltage of the predetermined waveform generated there is a vibration element. The ultrasonic vibrator 70 is vibrated by being applied to 71. Cavitation occurs in the cleaning water 61 by the emitted ultrasonic waves, and the cleaning and deburring of the cleaning target 80 are performed using the action.

  In the ultrasonic cleaning / deburring apparatus 100 that operates as described above, the cleaning water processing apparatus 43 that performs processing for decomposing the cluster structure of the cleaning water 61 supplied to the cleaning tank 60, and the ultrasonic wave for ultrasonic radiation. There is a feature in the oscillator 50 that applies a voltage to the vibrator 70, and these feature points will be described below.

  First, the cleaning water treatment device 43 will be described. FIG. 2 is a configuration diagram illustrating the configuration of the cleaning water treatment apparatus 43 according to the present embodiment. In this figure, the cleaning water treatment device 43 includes a disc-shaped cleaning water treatment device main body 1 (substrate) for fixing four electromagnets, and a cleaning water supply pipe cavity provided at the center of the disc-shaped main body 1. 10 and electromagnets 11 to 14 fixed to the disc-shaped main body 1.

  The electromagnets 11 to 14 are arranged such that adjacent electromagnets form an angle of 90 ° with respect to the center of the disc-shaped main body 1. The electromagnets 11 to 14 are iron core-containing electromagnets. In the present embodiment, the electromagnets 11 to 14 are all electrically connected in series in order to excite these electromagnets simultaneously. However, in the present invention, in general, all of them are connected in parallel. Arbitrary electrical connections can be made, and the electromagnets can be individually excited without being electrically connected.

  In addition, the arrangement of the magnetic poles of the electromagnets 11 to 14 is arranged such that the N pole side is all opposed to the direction of the cavity 10 for the cleaning water supply pipe when an electric current is passed in FIG. The arrangement of the magnetic poles of the electromagnets 11 to 14 can be arbitrary. However, in any case, it is preferable that the line segment connecting the center of the N pole and the center of the S pole is along a straight line passing through the center of the disk of the main body 1.

  In the present embodiment, four electromagnets are used, but one or more electromagnets may be used, and an arbitrary number can be used. In the case where a plurality of magnetic fields are formed, it is preferable that the magnetic fields to be formed are arranged at an equal angle so as to uniformly act on the water in the cleaning water supply pipe 41. Although omitted in FIG. 2, in addition to the above-described components, the main body 1 includes connector terminals and electric wiring for supplying a voltage to be applied to the electromagnets 11 to 14.

  Further, the main body 1 can be separated into two semicircular disks so that the cleaning water supply pipe 41 is passed through the cleaning water supply pipe cavity 10, and the cleaning water supply pipe 41 is further separated from the cavity for the cleaning water supply pipe. After passing through the portion 10, the separated semi-discs can be fitted to each other by a pin connector or the like for ensuring electrical integrity so that the original disc can be restored. . The material forming the main body 1 can be, for example, synthetic resin, glass, or metal. The diameter of the cleaning water supply pipe cavity 10 corresponds to the diameter of the cleaning water supply pipe 41.

  The water supplied to the cleaning tank 60 passes through the cleaning water supply pipe 41. Examples of the water include pure water, DI water (water with few impurities), and tap water.

  The strength of the magnetic force of the electromagnets 11 to 14 can be set by selecting an optimum value according to the type of the cleaning water 61, the flow rate, the diameter of the cleaning water supply pipe 41, and the like. Further, as one preferred embodiment by experiment, 280 [μH] can be obtained by using 220 [turns] (the number of turns).

  FIG. 3 is a waveform diagram showing a waveform example of a voltage applied to the magnetic field generator of the apparatus according to the present embodiment. A pulse voltage is applied to the magnetic field generator (electromagnets 11 to 14) shown in FIG. FIG. 3A is an example of a waveform when the duty ratio is not 1: 1 (case 1), and FIG. 3B is a waveform when the duty ratio is 1: 1 (case 2). is there. In the present embodiment, the duty ratio of the voltage applied to the magnetic field generator can be arbitrarily set.

  The frequency of the pulse voltage varies depending on the type of cleaning water 61, the flow rate, the diameter of the cleaning water supply pipe 41, etc., but the frequency range is 10 KHz to 20 GHz, particularly about 800 KHz. High water quality improvement effect can be achieved.

  Since the pulse voltage shown in FIG. 3 is applied to the magnetic field generator shown in FIG. 2, the magnetic force generation of the electromagnets 11 to 14 is interrupted in a pulsed manner. It is possible to effectively decompose and subdivide the cluster structure of water molecules passing through the magnetic field generator installed in the road.

  FIG. 4 is a configuration diagram showing a configuration including a pulse voltage generation circuit of the cleaning water treatment apparatus 43 according to the present embodiment. In FIG. 4, the pulse voltage generation circuit according to this embodiment includes a DC power supply unit 21, a CR oscillator 22, and a current amplifier circuit 23. Reference numeral 24 denotes a magnetic field generator (a circuit element of the magnetic field generator shown in FIG. 2).

  An input source of power supplied from the DC power supply unit 21 is a DC stabilized power supply. It is also possible to use a dedicated battery. A main component of the CR oscillator 22 is a CR oscillation circuit including a resistor and a capacitor, and converts a DC voltage supplied from the DC power supply unit 21 into a pulse voltage. The current amplifier circuit 23 amplifies the pulse voltage output from the CR oscillator 22. Electrically main components of the magnetic field generator 24 are the electromagnets 11 to 14 shown in FIG. 2 connected in series in the present embodiment.

  As described above, according to the cleaning water treatment apparatus 43 of this embodiment, even when the water flowing through the water flow path (washing water supply pipe 41) has a cluster structure of water molecules, By passing through the magnetic field generator, the cluster can be subdivided by the intermittent magnetic action.

  FIG. 5 is a configuration diagram showing another embodiment of the cleaning water treatment apparatus 43. In FIG. 5, three magnetic field generators X, Y, and Z are arranged at regular intervals along the water flow path (washing water supply pipe 41). The configuration of the magnetic field generators X, Y, and Z is the same as that of the magnetic field generator shown in FIG.

  As shown in FIG. 5B, the magnets of the magnetic field generators X, Y, and Z are arranged such that a line segment connecting the center of the main body and the center of the magnetic pole is shifted by 30 degrees. That is, the magnet of the magnetic field generator Y is arranged at a position where the line segment is rotated 30 degrees to the right of the magnet of the magnetic field generator X, and the magnet of the magnetic field generator Z is arranged such that the line segment of the magnetic field generator Y is It is arranged at a position rotated by 30 degrees to the right of the magnet.

  In the present embodiment, the number of main bodies is three, but in general, in the present invention, the number can be two or four or more. However, the number of the main bodies to be installed naturally has a limit in consideration of the size of the electromagnet. When the number of electromagnets fitted to each magnetic field generator is four, the above rotation angle is (90 / n) degrees when the number of installed main bodies is n. Evenly rotating magnetic field will be given to the water passing through the water flow path, and the best water quality improvement effect can be obtained, but the rotation angle between adjacent magnetic field generators can also be different It is.

  In addition, the arrangement interval on the water flow path of the magnetic field generators X, Y, and Z passes through each of the magnetic field generators and the strength of the magnetic force generated by each of the magnetic field generators (related to the effective reach distance of the magnetic flux). The distance is set in consideration of the distance at which the water cluster starts recombination, but may be 1.0 to 2.0 times (for example, 15 cm) of the effective reach distance (for example, 10 cm) of the magnetic flux. Moreover, in this embodiment, although the arrangement | positioning space | interval is constant, the distance between each magnetic field generator can also be made different.

  6 is a waveform diagram showing an example of a waveform of a voltage applied to the magnetic field generator of the embodiment shown in FIG. A pulse voltage shown in FIG. 6 is applied to each of the magnetic field generators X, Y, and Z shown in FIG. That is, the duty ratio of the pulse voltage is set to be twice as long as the time period in the low level state as compared to the time period in the high level state. Further, with respect to the phase, the pulse voltage applied to the magnetic field generator Y is delayed by a time length corresponding to one high level state than the pulse voltage applied to the magnetic field generator X, and the magnetic field generation The pulse voltage applied to the device Z is delayed from the pulse voltage applied to the magnetic field generator Y by a time length corresponding to one high level state.

  The frequency of the pulse voltage varies depending on the type of water to be treated, the flow rate, the diameter of the water flow path (wash water supply pipe 41), etc., but the frequency range is 10 kHz to 20 GHz, particularly about 800 kHz. By doing so, a high water quality improvement effect can be achieved.

  Since the pulse voltage shown in FIG. 6 is applied to the magnetic field generators X, Y, and Z shown in FIG. 5, the magnetic force generation of the electromagnets 11 to 14 held in each of the magnetic field generators X, Y, and Z is The rotation angle as shown in FIG. 5 (a) is given, and the magnetic force of each of the magnetic field generators X, Y, and Z is given by the waveform of the applied voltage shown in FIG. Since the generation times are different, the cluster structure of water molecules passing through the magnetic field generators X, Y, and Z installed in the water flow path is further finely divided into subdivided clusters. In addition, reclustering due to recombination of water molecules can be prevented.

  In the present embodiment, the pulse voltage applied to each of the magnetic field generators X, Y, and Z is as shown in FIG. 6 (that is, the high-level state of the three systems of pulse voltages is continuous). However, in general, in the present invention, the high level states of a plurality of pulse voltages can partially overlap, and a low level state is interposed between the high level states of three pulse voltages. (In FIG. 6, each pulse voltage to the magnetic field generator Y is started simultaneously with the end of each pulse voltage to the magnetic field generator X. It is also possible that each pulse voltage to the magnetic field generator Y starts after a lapse of a predetermined time from the end of the above.

  FIG. 7 is a configuration diagram showing a configuration including a pulse voltage generation circuit of the cleaning water treatment apparatus 43 of the embodiment shown in FIG.

  In FIG. 7, the pulse voltage generation circuit includes a DC power supply unit 31, a CR oscillator 32, a shift register 33, and a current amplification circuit 34. Reference numerals 35 to 37 denote magnetic field generators (circuit elements of the magnetic field generators X to Z shown in FIG. 5). As an input source of power supplied from the DC power supply unit 31, a DC stabilized power supply and a dedicated battery can be used. A main component of the CR oscillator 32 is a CR oscillation circuit including a resistor and a capacitor, and converts a DC voltage supplied from the DC power supply unit 31 into a pulse voltage.

  The shift register 33 converts the pulse voltage supplied from the CR oscillator 32 into a pulse voltage of a plurality of outputs (a plurality of systems) applied to each of the magnetic field generators X, Y, and Z as shown in FIG. The current amplification circuit 34 amplifies each of the pulse voltages for the magnetic field generators X, Y, and Z output from the shift register 33. In the present embodiment, the main electrical components of the magnetic field generator X (35) to the magnetic field generator Z (37) are the electromagnets 11 to 14 shown in FIG. 2 connected in series.

  As described above, according to this embodiment, even when the water flowing through the water flow path has a cluster structure of water molecules, this water is allowed to pass through the magnetic field generators X, Y, and Z described above. As a result, the cluster structure of water molecules passing through the water channel can be further subdivided by the action of magnetism that is intermittently pulsed, and reclustering due to recombination of water molecules can be prevented. There is.

  In this embodiment, three magnetic field generators each having four electromagnets are used, but the number of electromagnets fitted to the magnetic field generator is 5 or more, or 3 or less. The number of electromagnets fitted to individual magnetic field generators may be different for each magnetic field generator or may be the same. Further, as shown in FIG. 5, it is preferable that the electromagnets in the respective magnet generators are arranged at equiangular intervals on the concentric circle of the central axis of the main body, but the positions deviated from the equiangular intervals are arranged. You may arrange in.

  Further, as a modification of this embodiment, the single electromagnet having twelve electromagnets whose adjacent electromagnets form an angle of 30 ° with respect to the center of the disk-shaped body, with the method of applying the pulse voltage in this embodiment as it is. The washing water treatment device 43 can also be constituted by the magnetic field generator.

  In this case, a first group of four electromagnets that are at an angle of 90 ° to each other is first excited and then a second group of four electromagnets rotated by 30 ° relative to the first group of electromagnets. The group is excited, and finally the third group of four electromagnets rotated by 30 ° with respect to the second group of electromagnets is excited, returning to the excitation of the four electromagnets of the first group again. This will be repeated thereafter.

  Thereby, a rotating magnetic field is formed in one magnetic field generator, and water molecules can be subdivided more effectively under the action of the rotating magnetic field.

  As a further modification, a pulse voltage is sequentially applied to all electromagnets in one rotational direction without grouping 12 electromagnets fitted to a single or three disc-shaped bodies. The magnetic field may be rotated 360 °.

  In the two modified examples described above, the number of electromagnets is not the essence of the present invention, and the washing water treatment apparatus 43 using 13 or more or 11 or less electromagnets may be used.

  Furthermore, in the second embodiment described above and its modification, the case where the timing of the pulse voltage applied to each electromagnet is controlled so that a magnetic field rotating in a certain direction acts on water molecules will be described. However, it is also possible to control the timing of the pulse voltage in such a manner that the rotation direction of the magnetic field is reversed at a predetermined timing.

  As described above, according to the cleaning water treatment apparatus 43 of the ultrasonic cleaning / deburring apparatus 100 according to the present embodiment, the water molecule clusters can be effectively subdivided and once subdivided. It is possible to prevent water molecules from recombining. Accordingly, the cleaning water 61 with the cluster structure subdivided is provided to the cleaning tank 60, and it becomes difficult to scratch the surface of the object 80 during cleaning, so that the emitted ultrasonic waves can be made stronger than before. And the cleaning power can be improved. Furthermore, the cleaning water treatment apparatus 43 has an advantage that the structure is simple and it can be easily installed at an arbitrary location in the water flow path.

  Next, the oscillator 50 of the ultrasonic cleaning / deburring apparatus 100 according to this embodiment will be described. FIG. 8 is a configuration diagram showing a schematic circuit configuration of the oscillator 50. As described above, the oscillator 50 is a part that generates a voltage having a predetermined waveform to be applied to the ultrasonic transducer 70. As shown in FIG. 8, the filter circuit 51, the rectifier circuit 52, the inverter circuit 53, and the pulse generation circuit. A54, a pulse generation circuit B55, a secondary circuit 56, and the like.

  In the oscillator 50, filtering and rectification processing are performed in the filter circuit 51 and the rectifier circuit 52 with respect to electric power input from a general power supply or the like, and the voltage that has become a rectangular wave is input to the inverter circuit 53. In the inverter circuit 53, the pulse generation circuit A54, and the pulse generation circuit B55, the frequency of the voltage output to the ultrasonic transducer 70 and the waveform of a rectangular wave are determined. Thereafter, the voltage is transformed with the secondary circuit 56, and the voltage that is a rectangular wave is converted into a sine wave and output to the ultrasonic transducer 70. It is known that applying a sinusoidal voltage to an ultrasonic transducer in an ultrasonic cleaning / deburring apparatus is more effective than applying a rectangular wave voltage.

  One feature of the oscillator 50 is that the voltage output (applied) to the ultrasonic transducer 70 is a multiple wave. FIG. 9 is a diagram illustrating the waveform of the voltage output from the oscillator 50. FIG. 9 shows an example in which a wave having a frequency higher than that of the fundamental wave (B in the figure) is added to a sine wave that is the fundamental wave (A in the figure) to form the multiplexed wave. Such a multiplexed wave is generated, for example, by adding a sharp waveform of 25 KHz to 535 KHz to a fundamental wave of 25 KHz.

  Of this multiplexed wave, the fundamental wave portion is generated based on the aforementioned pulse generation circuit A54, and the wave added to this fundamental wave is generated based on the pulse generation circuit B55. Conventional oscillators usually do not have this pulse generation circuit B55, and this oscillator 50 has such a circuit. Based on this circuit, the above-described multiwave voltage is applied to the ultrasonic transducer 70. This is one of the major features.

  As described above, when the multi-wave voltage as described above is applied to the ultrasonic transducer 70, the object 80 to be cleaned is applied rather than the case where only the voltage of only the fundamental wave (for example, A in FIG. 9) is applied. Experiments have shown that the cleaning and deburring capabilities are improved, and the use of the oscillator 50 makes it possible to improve the cleaning and deburring effectiveness than before.

  Next, another feature of the present oscillator 50 will be described. As described above, in the secondary circuit of the oscillator 50, the voltage and the voltage value determined are converted into a sine wave. The inductance L value of the choke coil 561 provided for the conversion process is converted into the value. There are features.

  FIG. 10 is a diagram showing a schematic circuit around the secondary circuit 56 in the oscillator 50. The choke coil 561 shown in FIG. 10 is the choke coil in the secondary circuit 56 described above, and the voltage output to the ultrasonic transducer 70 is converted into a sine wave. This oscillator 50 is characterized by the inductance L value of the choke coil 561. Conventionally, when the capacitance C in the ultrasonic transducer 70 and the vibration frequency f of the ultrasonic transducer 70 (that is, the frequency of the fundamental wave in the multiplexed wave output from the oscillator 50) are determined, The inductance L of the choke coil was obtained by the following equation (1).

f = 1 / (2π (LC) ^1/2 ) (1)
F in the equation (1) is usually called a resonance frequency. Therefore, conventionally, the value of the inductance L is set so that the vibration frequency of the ultrasonic transducer 70 becomes the resonance frequency.

  However, in this oscillator 50, the inductance L is set to a value different from the value obtained from the equation (1). It has been experimentally obtained that the deburring capability of the ultrasonic transducer 70 having the same specifications is improved as compared with the conventional value by using such a value. It becomes possible to improve the efficacy of. In the present embodiment, the choke coil 561 is composed of two coils as shown in FIG.

  As described above, the oscillator 50 according to the present embodiment has two main characteristics, and the effects of cleaning and deburring can be improved by these characteristics.

  As described above, by using the ultrasonic cleaning / deburring apparatus 100, the cluster of the cleaning water 61 is subdivided, and the vibration of the ultrasonic vibrator 70 effective for cleaning and deburring is performed. Therefore, it is possible to improve the effectiveness of cleaning and deburring than before.

  In the ultrasonic cleaning / deburring apparatus 100 according to the present embodiment, the cleaning water treatment apparatus 43 is provided. However, the cleaning water treatment apparatus 43 is not provided, and the characteristics of the oscillator 50 described above. It can also be set as the apparatus characterized by these. In this case, it is preferably used mainly as a deburring device. On the other hand, although the cleaning water treatment device 43 is provided, the oscillator 50 may not have the characteristics. That is, the cleaning water treatment device 43 is added to the conventional ultrasonic cleaning / deburring device. In this case, it is preferably used mainly as a cleaning device.

  The protection scope of the present invention is not limited to the above-described embodiment, but covers the invention described in the claims and equivalents thereof.

1 is a schematic configuration diagram according to an embodiment of an ultrasonic cleaning / deburring apparatus to which the present invention is applied. FIG. It is a block diagram which shows the structure of the washing water processing apparatus 43 which concerns on the example of this Embodiment. It is a wave form diagram which shows the waveform of the voltage applied to the magnetic field generator of the apparatus which concerns on the example of this Embodiment. It is a block diagram which shows the structure containing the pulse voltage generation circuit of the washing water treatment apparatus 43 which concerns on this Example. It is a block diagram which shows another embodiment of the washing water processing apparatus 43. FIG. It is a wave form diagram which shows the example of a waveform of the voltage applied to the magnetic field generator of embodiment shown in FIG. It is a block diagram which shows the structure containing the pulse voltage generation circuit of the washing water processing apparatus 43 of embodiment shown in FIG. 2 is a configuration diagram showing a schematic circuit configuration of an oscillator 50. FIG. 6 is a diagram illustrating a waveform of a voltage output from the oscillator 50. FIG. 3 is a diagram showing a schematic circuit around a secondary circuit 56 in the oscillator 50. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Washing water processing apparatus main body (board | substrate), 10 Cavity part for washing water supply pipes, 11-14 Electromagnet, 21, 31 DC power supply part, 22, 32 CR oscillator (voltage generation circuit), 23, 34 Current amplification circuit (voltage) Generator circuit), 24 magnetic field generator, 33 shift register (voltage generator circuit), 35 magnetic field generator X, 36 magnetic field generator Y, 37 magnetic field generator Z, 40 washing water supply device (cleaning liquid supply means), 41 washing water Supply pipe (cleaning liquid supply pipe), 42 Washing water pump, 43 Washing water treatment device, 50 Oscillator, 51 Filter circuit, 52 Rectifier circuit, 53 Inverter circuit, 54 Pulse generation circuit A, 55 Pulse generation circuit B, 56 Secondary circuit , 60 cleaning tank, 61 cleaning water, 70 ultrasonic vibrator, 71 vibration element, 80 object to be cleaned, 1 00 Ultrasonic cleaning and deburring device, 561 Choke coil

Claims (14)

A cleaning tank for storing the cleaning liquid, a cleaning liquid supply means for supplying the cleaning liquid to the cleaning tank via a cleaning liquid flow path, an ultrasonic vibrator provided in the cleaning tank, and operating the ultrasonic vibrator An ultrasonic cleaning / deburring device that radiates ultrasonic waves from the ultrasonic vibrator to the cleaning liquid and performs cleaning and / or deburring of an object immersed in the cleaning liquid. ,
The cleaning liquid supply means includes
A magnetic field generator for applying a magnetic field to the supplied cleaning liquid;
A voltage generation circuit for supplying a voltage to the magnetic field generator,
The ultrasonic cleaning / deburring apparatus, wherein the voltage generation circuit is controlled so that the magnetic field generation device repeats a state in which a magnetic field is applied to the cleaning liquid and a state in which no magnetic field is applied. In claim 1,
The ultrasonic cleaning / deburring device, wherein the voltage generating circuit supplies a pulse voltage to the magnetic field generating device. In claim 1 or claim 2,
The magnetic field generator is installed in the middle of the cleaning liquid flow path, and has a disk-shaped main body having a hollow portion for penetrating the cleaning liquid flow path in the center, and at least one provided in the main body. An ultrasonic cleaning / deburring device characterized by comprising an electromagnet. In claim 3,
The ultrasonic cleaning / deburring apparatus according to claim 1, wherein a line connecting the centers of both poles of the electromagnet is along a straight line on the cross section passing through a center of a cross section of the disk-shaped main body. In claim 3 or claim 4,
There are a plurality of electromagnets fitted to the main body, and the plurality of electromagnets are all electrically connected in series or all connected in parallel. In any one of Claims 1 thru | or 5,
The ultrasonic cleaning / deburring apparatus, wherein the cleaning liquid flow path is a cleaning liquid supply pipe. In any one of Claims 1 thru | or 6,
The ultrasonic cleaning / deburring device, wherein a plurality of the magnetic field generators are installed at predetermined intervals in the middle of the cleaning liquid flow path. In claim 7,
In the plurality of magnetic field generators, the positions of the electromagnets provided in each disk-shaped body are shifted from each other in the rotation direction around the central axis of the disk-shaped body between adjacent disk-shaped bodies. Features ultrasonic cleaning and deburring equipment. In claim 7 or claim 8,
Three of the magnetic field generators are installed,
While the one magnetic field generation device is in a state of applying a magnetic field, the voltage generation circuit is controlled so that the other two are in a state in which no magnetic field is applied. Take-off device. In claim 8,
The ultrasonic cleaning / deburring apparatus is characterized in that three or more magnetic field generators are installed at predetermined intervals in the middle of the cleaning liquid flow path. A cleaning tank that contains a cleaning liquid; an ultrasonic vibrator provided in the cleaning tank; and an oscillator that operates the ultrasonic vibrator by applying a voltage to the ultrasonic vibrator. An ultrasonic cleaning / deburring device that radiates ultrasonic waves from a vibrator to the cleaning liquid and cleans and / or deburrs the object to be cleaned immersed in the cleaning liquid,
The oscillator applies a voltage having a multiple wave waveform obtained by adding a wave having a frequency higher than the frequency of the fundamental wave to a fundamental wave having a predetermined frequency to the ultrasonic transducer. Take-off device. In any one of Claims 1 to 10,
The oscillator applies a voltage to operate the ultrasonic transducer,
The ultrasonic cleaning / deburring apparatus characterized in that the voltage forms a multi-wave waveform obtained by adding a wave having a frequency higher than the frequency of the fundamental wave to a fundamental wave having a predetermined frequency. A cleaning tank that contains a cleaning liquid; an ultrasonic vibrator provided in the cleaning tank; and an oscillator that operates the ultrasonic vibrator by applying a voltage to the ultrasonic vibrator. An ultrasonic cleaning / deburring device that radiates ultrasonic waves from a vibrator to the cleaning liquid and cleans and / or deburrs the object to be cleaned immersed in the cleaning liquid,
The oscillator is
A circuit for generating a rectangular wave voltage having a frequency of a voltage applied to the ultrasonic transducer;
The generated rectangular wave voltage is converted into a sine wave voltage, and the converted voltage is applied to the ultrasonic transducer,
The inductance value of the coil is different from a value such that the resonance frequency determined from the inductance value and the capacitance of the ultrasonic transducer is equal to the frequency of the voltage applied to the ultrasonic transducer. Ultrasonic cleaning and deburring device. In any one of Claims 1 to 12,
The oscillator is
A circuit for generating a rectangular wave voltage having a frequency equal to the frequency of the voltage applied to the ultrasonic transducer;
The generated rectangular wave voltage is converted into a sine wave voltage, and the converted voltage is applied to the ultrasonic transducer,
The inductance value of the coil is different from a value such that the resonance frequency determined from the inductance value and the capacitance of the ultrasonic transducer is equal to the frequency of the voltage applied to the ultrasonic transducer. Ultrasonic cleaning and deburring device.

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