JPS59118428A - Driving device for ultrasonic vibrator - Google Patents
Driving device for ultrasonic vibratorInfo
- Publication number
- JPS59118428A JPS59118428A JP21018182A JP21018182A JPS59118428A JP S59118428 A JPS59118428 A JP S59118428A JP 21018182 A JP21018182 A JP 21018182A JP 21018182 A JP21018182 A JP 21018182A JP S59118428 A JPS59118428 A JP S59118428A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- ultrasonic
- ultrasonic transducer
- vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/40—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups with testing, calibrating, safety devices, built-in protection, construction details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
く技術分野）
本発明は超音波ウェルター等の超音波加工機のための超
音波振動子駆動装置に関し、特にはその超音波振動子の
駆動状態を指示づるための勅作状態指示装同を備えた超
音波振動子駆動装置に関するものである。[Detailed Description of the Invention] [Technical Field] The present invention relates to an ultrasonic transducer drive device for an ultrasonic processing machine such as an ultrasonic welter, and particularly relates to an ultrasonic transducer driving device for an ultrasonic processing machine such as an ultrasonic welter. The present invention relates to an ultrasonic transducer drive device equipped with an operation status indicator.
（従来技術）
従来上記した超音波ウェルター等の超音波加工機におい
てその超音波振動子か正常に超音波振動されているか否
かを作業者か識別し得るように、例えば、その振動子駆
動回路に供給される電流値又は電力値により負荷の大き
さを表わづ一信号を指示させたり、その振動子の振動量
に比例づる信号ど振動子を駆動するための交流信号との
差電圧にＪ、り駆動回路の余裕度を表わす信号を指示さ
せたりするＩ〔めのメータを３ハブたものが既に提供さ
れている。(Prior Art) Conventionally, in an ultrasonic processing machine such as the above-mentioned ultrasonic welter, in order to enable a worker to identify whether or not the ultrasonic vibrator is being ultrasonically vibrated normally, for example, the vibrator drive circuit is used. The current value or power value supplied to the oscillator can be used to specify a signal representing the size of the load, or a signal proportional to the amount of vibration of the oscillator. There is already a model equipped with three hubs of meters, J and I, which instruct a signal representing the margin of the drive circuit.
しかし、そのような従来装置においては被加工物に超音
波加工を実際に施す際にはその動作状態を作業者が識別
し得るか加工用ホーンの交換の際加工用ホーンを取り外
した状態とかその加工用ホーンを被加工物へ当接させな
いいわゆる（辰切子のカラ光振（無負荷発振）の状態等
に；Ｊ５いてその動作状態を作業者か知り得なかった。However, with such conventional equipment, when actually performing ultrasonic machining on a workpiece, it is difficult for the operator to identify the operating state, or when the machining horn is removed or replaced when the machining horn is replaced. When the machining horn was not brought into contact with the workpiece, the operator was unable to know the operating state of the so-called (non-load oscillation) state of the dragon cutter.
又、従来装置においては上記した各信号の吊を表示づる
ためメータが一個しか設けられていず、しかも振動子、
加工用ホーン、駆動回路からなる駆動装置は帰還回路に
よって閉ループとされているため、動作状態の異常状態
を作業者が知り得たとしてもその故障原因か振動子、加
工用ホーン、駆動回路等のうちのいづれにあるのかが全
く分らないものであり、特に撮動子の経年変化等による
同一供給電力に対する振動子の振ｖＪ量の減少する現象
に起因する振動子自体の故障等には全く対応し得ないも
のであつ ｌこ 。In addition, in the conventional device, only one meter is provided to display the level of each signal mentioned above, and furthermore, a vibrator,
The drive device consisting of the machining horn and the drive circuit is in a closed loop due to the feedback circuit, so even if the operator becomes aware of an abnormal operating condition, the cause of the failure or the vibrator, machining horn, drive circuit, etc. There is no way to tell which one of them is causing the problem, and in particular, it does not respond to failures of the transducer itself due to the phenomenon in which the amount of vibration vJ of the transducer decreases for the same supplied power due to changes in the photo element over time, etc. It's impossible.
（目 的）
本発明は上記従来装置の上述した問題点に鑑み為された
もので、無負荷状態とか加工用ホーンを取り外した状態
において超音波振動子に超音波振動させるための操作ス
イッチを設けるとともにそれらの各状態において電力供
給回路から駆動回路に供給される電流値による負荷量、
振ｔｊ＋子の振動用と駆動のための交流信号との差電圧
による駆動回路の余裕量及び振動子の絶対１府動量のう
ら所望の合量を選択的に指示可能な指示装置を設けるこ
とにより、振動子駆動回路の故障原因を容易に識別し得
る超音波振動子駆動装置を提供することを目的とするも
のである。(Purpose) The present invention has been made in view of the above-mentioned problems of the conventional device, and is provided with an operation switch for causing an ultrasonic vibrator to vibrate ultrasonically in a no-load state or a state in which a machining horn is removed. and the amount of load based on the current value supplied from the power supply circuit to the drive circuit in each of those states,
By providing an indicating device that can selectively indicate a desired sum of the margin amount of the drive circuit and the absolute one movement amount of the vibrator based on the voltage difference between the AC signal for vibration and the drive of the vibrator. An object of the present invention is to provide an ultrasonic transducer drive device in which the cause of a failure in a transducer drive circuit can be easily identified.
（実施例）
以下、本発明を超音波ウェルターに具体化した一実施例
を示す図面を参照しｉその詳細を説明りる。(Example) Hereinafter, details will be explained with reference to the drawings showing an example in which the present invention is embodied in an ultrasonic welter.
図面において、超音波撮動子１は往復り） ｒｉＪ能な
可動枠体（図示せず）に保持され、その下端部には加工
用ホーン２か取着可能に連結されている。In the drawing, an ultrasonic sensor 1 is held by a movable frame (not shown) capable of reciprocating (reciprocating), and a processing horn 2 is attached to the lower end of the frame.
その可動枠体の往復りｊに基づき、往復動さ机る加工用
ホーン２の下方に配置される被加工物に超音波加工を施
すようにされている。前記超音波１辰動子１は駆動用素
子１ａ及び検出用素子１ｂを備えており、その駆動用素
子１ａは振動子駆動回路３に接続されるとともにその検
出用素子１ｂはコンデンサＣ１を介して変圧器Ｔ］の一
次巻線に接続されている。その変圧器Ｔ１の二次巻線は
前記振動子駆動回路３を構成する発振回路部３ａに接続
されており、前記検出用素子１ｂによって検出された高
周波信号をその発振回路３ａに帰還するすｉ＋）還回路
が構成されている。その発振回路部３ａは自励式発振回
路で、電源投入時予め定められた前記超音波振動子１の
所望の振動周波数２０ Ｋ ｌ−１ｚよりわずかに低い
周波数１９Ｋｌ−１ｚ程度の周波数て自動的に発振され
、その後、前記帰還回路からの高周波信号の周波数（超
音波振動子のＪ騒動周波数２０ＫＨ２）に引き込まれて
発振されるように構成されている。Based on the reciprocation j of the movable frame, ultrasonic processing is applied to the workpiece placed below the reciprocating processing horn 2. The ultrasonic wave element 1 includes a driving element 1a and a detection element 1b, and the driving element 1a is connected to the transducer driving circuit 3, and the detection element 1b is connected to the transducer driving circuit 3 through a capacitor C1. It is connected to the primary winding of transformer T]. The secondary winding of the transformer T1 is connected to the oscillation circuit section 3a constituting the vibrator drive circuit 3, and feeds back the high frequency signal detected by the detection element 1b to the oscillation circuit 3a. ) A return circuit is configured. The oscillation circuit section 3a is a self-excited oscillation circuit, and when the power is turned on, it automatically generates a frequency of about 19 Kl-1z, which is slightly lower than the predetermined desired vibration frequency of the ultrasonic transducer 1, 20 Kl-1z. It is configured to oscillate, and then be drawn into the frequency of the high-frequency signal from the feedback circuit (J noise frequency of the ultrasonic vibrator, 20KH2) and oscillate.
その発振回路３ａの高周波出力信号は励１辰回路部３１
）、及び電力増巾回路３Ｃを経て前記超音波振動子１の
駆動用素子１ａに供給されるよう接続されている。前記
電力増巾回路３Ｃは電力供給回路３ｄと抵抗Ｒ１を介し
て接続されてあり、その抵抗Ｒ１の両端には電力増巾回
路３Ｃに供給される供給電流に比例する電圧が検出し得
るように構成されている。又、前記励振回路３ｂは可変
電圧電源４と接続され、その可変励振回路３ｂの出力の
大きさが前記可変電圧電源４の出力電圧によって制御さ
れるように構成されている。The high frequency output signal of the oscillation circuit 3a is transmitted to the excitation circuit section 31.
), and is connected to be supplied to the driving element 1a of the ultrasonic transducer 1 via the power amplification circuit 3C. The power amplifying circuit 3C is connected to the power supply circuit 3d via a resistor R1, and a voltage proportional to the supply current supplied to the power amplifying circuit 3C can be detected across both ends of the resistor R1. It is configured. Further, the excitation circuit 3b is connected to a variable voltage power supply 4, and the magnitude of the output of the variable excitation circuit 3b is controlled by the output voltage of the variable voltage power supply 4.
前記超音波振動子１の検出用素子１ｂは更に変圧器Ｔ２
の一次巻線に接続されるとともに、その変圧器Ｔ２の二
次巻線の出力は整流回路５に接続され、その整流出力電
圧は前記可変電圧電源４の制御用端子に連結されるとと
もに、その整流回路５の出力は前記超音波振動子１の振
動量の大きさに比例した電圧が出力されるように構成さ
れている。その可変電圧電源４は前記検出用素子１１〕
の出力電圧すなわち振動量が大きい時前記励振回路３ｂ
に供給する電圧を小とし、又振動量が小なる時前記電圧
を大とするように構成され、前記超音波振動子１の振動
量が常に一定の値となるように制御するために設けられ
ている。The detection element 1b of the ultrasonic transducer 1 further includes a transformer T2.
The output of the secondary winding of the transformer T2 is connected to the primary winding, and the output of the secondary winding of the transformer T2 is connected to the rectifier circuit 5, whose rectified output voltage is connected to the control terminal of the variable voltage power supply 4, and its The rectifier circuit 5 is configured to output a voltage proportional to the amount of vibration of the ultrasonic vibrator 1. The variable voltage power supply 4 is the detection element 11]
When the output voltage, that is, the amount of vibration is large, the excitation circuit 3b
The ultrasonic transducer 1 is configured to reduce the voltage supplied to the ultrasonic transducer 1 and increase the voltage when the amount of vibration becomes small, and is provided to control the amount of vibration of the ultrasonic vibrator 1 so that it always maintains a constant value. ing.
前記整流回路５の出力は更にトランジスタＴ「１のベー
スに接続されそのエミッタ出力電圧か前記超音波振動子
１の振動量に比例した雷１１１Ｅ Ｉｉｊを出力するよ
うに構成されている。The output of the rectifier circuit 5 is further connected to the base of the transistor T'1, and is configured to output a voltage 111EIij proportional to its emitter output voltage or the amount of vibration of the ultrasonic vibrator 1.
差電圧検出回路６は前記トランジスタＴｒ１のエミッタ
出力から抵抗Ｒ２を介してそのベースに接続されるとと
もにそのコレクタが前記可変電圧電源４に接続されたＴ
ｒ２とそのエミッタに接続された抵抗Ｒ３、Ｒ４を含み
、前記超音波振動子１の実際の振動量に比例する電圧値
とその超音波振動子１の駆動用素子１ａに供給する交流
信号の大きさを決めるための励振回路３ｂへの供給電圧
値すなわちその可変電圧電源４の出力電圧値との差電圧
を検出し、その駆動装置における回路余裕度を表わし１
ｑるように前記抵抗Ｒ３、Ｒ４の接続端子と前記可変電
圧電源の出力に接続された抵抗Ｒ５とが設（プられてい
る。警報回路７は同じく前記振動量に比例する電圧値と
前記可変電圧電源４の出力電圧値との差電圧すなわち前
記回路余裕度の逆数か予め定められた値以上になった時
、作業者に異常を知らせるための報知装置としてのブザ
ー回路（図示せず）を含み、前記Ｔｒ２のエミッタ及び
可変電圧電源４の出力とそれぞれ抵抗Ｒ６゜Ｒ７を介し
て接続されている。The differential voltage detection circuit 6 is connected from the emitter output of the transistor Tr1 to its base via a resistor R2, and has a collector connected to the variable voltage power supply 4.
r2 and resistors R3 and R4 connected to its emitter, a voltage value proportional to the actual amount of vibration of the ultrasonic transducer 1, and the magnitude of the AC signal supplied to the driving element 1a of the ultrasonic transducer 1. The difference voltage between the supply voltage value to the excitation circuit 3b, that is, the output voltage value of the variable voltage power supply 4, is detected to determine the output voltage, and the circuit margin in the drive device is expressed as 1.
A resistor R5 is connected to the connection terminals of the resistors R3 and R4 and the output of the variable voltage power source so that A buzzer circuit (not shown) is provided as a notification device to notify the operator of an abnormality when the voltage difference between the output voltage value of the voltage power source 4 and the output voltage value exceeds a reciprocal of the circuit margin or a predetermined value. The emitter of the Tr2 and the output of the variable voltage power supply 4 are connected through resistors R6 and R7, respectively.
ロークリスイッヂ８は図示しない操作パネル上に作業者
が切換操作可能に設けられた３回路３接点型の回転式切
換スイッチで、その切換用の共通端子８ｃ１．８ｃ２に
は電流計９が接続されている。The rotary switch 8 is a 3-circuit, 3-contact type rotary changeover switch that is provided on an operation panel (not shown) so that it can be operated by an operator, and an ammeter 9 is connected to the common terminals 8c1 and 8c2 for switching. .
切換用合接点１くＡ１及びＲＢｌにはトランジスタＴｒ
１のエミッタ及びアース端子に、切換用接点ＲＡ２及び
ＲＢ２には前記差電圧検出回路６に接続された抵抗Ｒ５
の一端及び抵抗Ｒ３と抵抗Ｒ４との接続端子に、切換接
点ＲΔ３及びＲ１３３には前記電力供給回路３ｄの出力
端子及び電力増巾回路３Ｃへの供給端子にそれぞれ接続
されており、ロータリスィッチ８切換操作することによ
り前記超音波振動子１の実際の振動ｍ、前記差電圧検出
回路による余裕度に関連する差電圧、及び前記振動子駆
動回路３の電力層ｒｌｊ回路３Ｃへの入ツノ電流のうち
いづれか一つを選択的に前記操作パネル（図示せず）に
配置された電流泪９に表示し１！′するように構成され
ている。A transistor Tr is connected to the switching junction 1, A1 and RB1.
A resistor R5 connected to the differential voltage detection circuit 6 is connected to the emitter and ground terminal of 1, and to the switching contacts RA2 and RB2.
The switching contacts RΔ3 and R133 are connected to the output terminal of the power supply circuit 3d and the supply terminal to the power amplification circuit 3C, respectively. By operating, the actual vibration m of the ultrasonic transducer 1, the differential voltage related to the margin by the differential voltage detection circuit, and the incoming current to the power layer rlj circuit 3C of the transducer drive circuit 3 are determined. One of them is selectively displayed on the electric current 9 arranged on the operation panel (not shown), and 1! ’ is configured to do so.
中央演算処理装置（以下ＣＰＵと称り）１０は読み出し
専用メモリ（以下ＲＯＭと称づ）１１に記憶された制御
用プラグラムに基き所望の演算、制御を為すいわゆるス
トアドブログラム方式のコンピュータを構成するプロセ
ッサで、それぞれバスラインを介してＲＯＭ１１、読み
出し書き込み可能なメモリ〈以下ＲＡＭと称す）１２、
入カポ−ｌ−１３、及び出力ポート１４に接続されてい
る。A central processing unit (hereinafter referred to as CPU) 10 constitutes a so-called stored program type computer that performs desired calculations and control based on a control program stored in a read-only memory (hereinafter referred to as ROM) 11. The processor connects a ROM 11, a readable/writable memory (hereinafter referred to as RAM) 12, respectively via a bus line.
It is connected to the input port 1-13 and the output port 14.
その入力ポート１３には前記ロータリスイッチ８の各切
換用接点ＲＣＬ ＲＣ２、ＲＣ３か接続され、そのロー
タリスイッチ８の接地されている切換用共通端子８０３
かいづれの切換用接点と接する位置に位置するかをモニ
ターし得る。又、前記各切換用接点Ｒ△１及びＲＢｌと
△−り変換器１６、切換用接点Ｒ△２及びＲＢ２と△Ｄ
変換器１７、切換用接点Ｒ△３及びＲＢ３と△−り変換
器１８とはそれぞれリード線を介して接続されるとども
に各△−り変換器１６．１７．１８の出力は前記入カポ
−１へ１３に接続され、前述した超音波振動子１の実際
の振動量、駆動回路の余裕度、電力増１］回路３０への
入力電流値等の各データがデジタル信号どして前記ＣＰ
Ｕ１０によってモニタし得るように構成されいる。又、
前記入カポ−１へ１３には更に被加工材料の加工を開始
り゛るために図示しない可動枠を往復動さぜるとともに
超音波振動子１を振動させて、被１］［］Ｉ月料の加工
開始を指令するための起動スイッチ１９及び前記振動子
駆動回路３のみを有効化させ、試験的に超音波振動子を
振動させるためのスイッチ２０及び超音波振動子１にハ
０工用ホーン２が装着されているか否かの指令信号を什
生さぜる設定スイッチ２４か接続されている。Each switching contact RCL RC2, RC3 of the rotary switch 8 is connected to the input port 13, and a common switching terminal 803 of the rotary switch 8 is connected to the ground.
It is possible to monitor whether the contact point is in contact with the switching contact of the switch. In addition, the switching contacts R△1 and RB1 and the △-reverse converter 16, the switching contacts R△2, RB2 and △D
The converter 17, the switching contacts R△3 and RB3, and the △-reverse converter 18 are connected via lead wires, and the outputs of the △-reverse converters 16, 17, and 18 are connected to the input capacitors. -1 to 13, and each data such as the actual vibration amount of the ultrasonic transducer 1, the margin of the drive circuit, the input current value to the power increase circuit 30 is transmitted as a digital signal to the CP.
It is configured so that it can be monitored by U10. or,
In order to start processing the material to be processed, a movable frame (not shown) is reciprocated and the ultrasonic vibrator 1 is vibrated to produce the material to be processed. Only the start switch 19 for instructing the start of machining of the material and the vibrator drive circuit 3 are enabled, and the switch 20 and the ultrasonic vibrator 1 for experimentally vibrating the ultrasonic vibrator are activated. A setting switch 24 for generating a command signal indicating whether the horn 2 is attached or not is also connected.
前記出力ポート１４は前記振動子駆動回路３の起動停止
等の制御を行なう制御用リード線２１によってその振動
子駆動回路に接続されるとともに、ＬＥＤ駆動回路２２
を介して前述した超音波１辰動子１の振動量差電圧検出
回路の出力電圧及び前記電力増巾回路３への入力電流が
異常値を示したときその異常を表示するために設（プら
れた３個のＬＥＤ２３ａ 、２３ｂ 、２３ｃと接続さ
れている。The output port 14 is connected to the vibrator drive circuit 21 by a control lead wire 21 that controls starting and stopping of the vibrator drive circuit 3, and also connects to the LED drive circuit 22.
When the output voltage of the vibration amount difference voltage detection circuit of the ultrasonic wave 1 radiator 1 and the input current to the power amplifying circuit 3 show an abnormal value through the above-mentioned It is connected to the three LEDs 23a, 23b, and 23c.
前記ＲＯＭ１１には上述した加工％置が工場出荷される
際に超音波振動子駆動装置の前記加工用ホーン２が装着
された状態及び取り外された状態Ｃ正常運転どされる前
述した超音波振動子１の振ｔｊＪ ＦＡに対応する電圧
、差電圧検出回路の出力電圧及び前記抵抗Ｒ１の両端の
出力電圧等の各データがそれぞれ予めデジタル的に記憶
されている。The above-mentioned ROM 11 stores the above-mentioned ultrasonic transducer in a state in which the above-mentioned processing horn 2 of the ultrasonic transducer driving device is installed and in normal operation when the above-mentioned processing position is shipped from the factory. Each data such as the voltage corresponding to the amplitude tjJFA of 1, the output voltage of the differential voltage detection circuit, and the output voltage across the resistor R1 is stored in advance digitally.
次に、上記のように構成された本装置の作動の説明を行
う。Next, the operation of this apparatus configured as described above will be explained.
電源投入後、起動スイッチ１つか押圧されると、前記Ｃ
ＰＩＪ １０から出力ポートコ４を介して振動子駆動回
路３か有効化され超音波振動子１に高周波信号か供給さ
れその超音波撮動が開始されるとともに図示しない可動
枠体の往復動に伴ない加工用ホーン２が往復動され被加
工物に超音波加工か施される。通常運転時においては前
記切換スイッチ８は図面に示される状態にあり、前記電
流計９には駆動回路の余裕度が指示される。上記超音波
加工時に伺等かの異常がみられた場合とか作業内容の変
更に伴ない加工用ホーンか交換された場合、作業者は最
初に加工用ホーンを取り外すとともに前記設定スイッチ
２４を加工用ホーンか装着されていない方の側に切換え
た後、前記テストスイッチ２０を押圧すると前記振動子
駆動回路３は有効化され、超音波振動子１が振動され前
記差電圧１６ｉ出回路６の出力電圧に基き電流絹９が指
示される。After turning on the power, if one start switch is pressed, the above C
The transducer drive circuit 3 is enabled from the PIJ 10 via the output port 4, a high frequency signal is supplied to the ultrasound transducer 1, and ultrasound imaging is started, along with the reciprocation of the movable frame (not shown). The machining horn 2 is reciprocated to perform ultrasonic machining on the workpiece. During normal operation, the changeover switch 8 is in the state shown in the drawing, and the ammeter 9 indicates the margin of the drive circuit. If an abnormality such as cracking is observed during the above-mentioned ultrasonic processing, or if the processing horn is replaced due to a change in the work content, the operator must first remove the processing horn and switch the setting switch 24 for processing. After switching to the side where the horn is not attached, when the test switch 20 is pressed, the vibrator drive circuit 3 is enabled, the ultrasonic vibrator 1 is vibrated, and the output voltage of the differential voltage 16i output circuit 6 is increased. Based on this, the current flow 9 is instructed.
それとともに前記ＣＰＵ１０は切換スイッチ８の切換接
点の状態をモニタし、そのモニタ位置に対応する動電圧
検出回路６の出力電圧を前記へ−り変換器コア及び入力
ポート１３を介して前記Ｒ△Ｍ１２に読取るとともに前
記ＲＯＭ”＋１内に予め記憶された正常運転時における
差電圧データと比較を行ない、その比較結果が予め定め
られた許容範囲内に収まらない時、即ち差電圧検出回路
の出力電圧に異常がみとめられる時前記出カポ−１〜１
４、ＬＥＤ駆動回路２２を介してＬＥＤ２３ｂを点灯す
る。At the same time, the CPU 10 monitors the state of the changeover contact of the changeover switch 8, and transmits the output voltage of the dynamic voltage detection circuit 6 corresponding to the monitored position to the RΔM12 through the heli converter core and the input port 13. When the comparison result is not within a predetermined tolerance range, that is, when the output voltage of the differential voltage detection circuit is When an abnormality is detected, the above-mentioned output capo-1-1
4. Turn on the LED 23b via the LED drive circuit 22.
以下、作業者はその加工用ホーン２を取り外した状態で
前記切換スイッチ８を順次切換えて上ｊホした操作と同
じ操作を行なうことにより前記電流計９には前記超音波
振動子１の振Ｉ＃ｌ１重及び電力１１ツ巾回路３Ｃへの
入力電流か順次指示されるとともに、前記ＣＰＵ１０に
よって超音波振動子１の実際の振動量及び前記振動子駆
動回路３の電力増１１回路３Ｃへの入力電流□□□にそ
れぞれ異常があるか否かの判別を行ない異常がみられる
時にはそれぞれ前記ＬＥＤ２３ａ及び２３Ｃが点灯され
ることによって作首（右はその異畠′を識別Ｃ′きる。Thereafter, with the processing horn 2 removed, the operator sequentially switches the changeover switch 8 and performs the same operation as described above. The input current to the #l1 weight and power 11 width circuit 3C is sequentially instructed, and the CPU 10 inputs the actual vibration amount of the ultrasonic transducer 1 and the input to the power increase 11 circuit 3C of the transducer drive circuit 3. It is determined whether or not there is an abnormality in each of the currents □□□, and when an abnormality is found, the LEDs 23a and 23C are turned on, thereby identifying the abnormality (on the right).
次に、前記加工用ホーン２を前記超音波振動子１に装着
するとともに前記設定スイッチ２４を加工用ホーンか装
着されている方の側に切換えた後、上述した操作と同様
な操作を行うことによって加工用ボーン２の装着時にお
ける前記超音波振動子１の振動量、前記差電圧検出回路
６の出力電圧（余裕度）、及び前記振動子駆動回路３の
電力増巾回路３Ｃへの入力電流等の各■をそれぞれ前記
電流量９に指示し得るとともにそれらの各テークか予め
定められた範囲内に収まるか否かの判別が行なわれ、そ
の範囲内に収まらず異常と判別された時ニハ前記Ｉ Ｅ
Ｄ２３ａ 、２３ｂ 、２３ｃが点灯され作業者がその
異常を識別し杓る。Next, after attaching the processing horn 2 to the ultrasonic transducer 1 and switching the setting switch 24 to the side to which the processing horn is attached, perform the same operation as described above. The amount of vibration of the ultrasonic transducer 1 when the processing bone 2 is attached, the output voltage (margin) of the differential voltage detection circuit 6, and the input current to the power amplification circuit 3C of the transducer drive circuit 3. etc. can be respectively instructed to the current amount 9, and it is determined whether each of these takes falls within a predetermined range or not, and when it is determined that it does not fall within the range and is abnormal, Said IE
D23a, 23b, and 23c are lit, and the operator identifies and corrects the abnormality.
上記実施例においては、前記超音波振動子１の振動量、
前記差電圧検出回路６の出力電圧、及び電力増巾回路３
Ｃへの入力電流のうちいづれか一つを選択的に指示し得
る指示装置としての７Ｔｉ流ｉ１９以外に、前記各指示
値に対応する正常動作時に４−３ける各データを予め記
憶Ｊ゛るメしりと、そのメモリに記憶されたデータと試
験的な超音波振動子の超音波振ｒｊＪＪ時の容量とを比
較判別づ−るギ１ｊ別手段と、その判別結果を指示する
異常状態表示装置とからなる自動異常識別装置を設りて
自動的に異′畠状態及び異常個所を識別し得るように構
成されたものを示したが、上記した電流量９を設りるだ
りでも本発明の目的を達成し得るものである。In the above embodiment, the amount of vibration of the ultrasonic transducer 1,
Output voltage of the differential voltage detection circuit 6 and power amplification circuit 3
In addition to the 7Ti current i19 as an indicating device that can selectively instruct any one of the input currents to C, there is also a device that stores each data in 4-3 in advance during normal operation corresponding to each instruction value. 1j discrimination means for comparing and determining the data stored in the memory and the capacity of the experimental ultrasonic transducer at the time of ultrasonic vibration rjJJ, and an abnormal state display device for indicating the determination result. Although an automatic abnormality identification device is provided to automatically identify abnormal conditions and abnormal locations, the object of the present invention can also be achieved by providing the above-mentioned current amount 9. can be achieved.
（効 果）
本発明は以上詳述したように、加工用ホーンの取着時に
おいて超音波振動子の超音波振動に伴なう振動子駆動回
路の超音波振動子の振動量、振動子駆動回路の余裕度を
表わす差電圧検出回路の検出量及び振動子駆動回路へ供
給される電流量のそれぞれを一つの指示装置に選択的に
指示し得るように構成するという簡単な構成により、そ
の振動子駆動回路の異常動作時にお（ｊる原因が正確に
把握し得るもので作業者の保守及び点検等が容易な超音
波振動子駆動装置を提供し得るものでめる。(Effects) As described in detail above, the present invention improves the vibration amount of the ultrasonic vibrator of the vibrator drive circuit and the vibrator drive caused by the ultrasonic vibration of the ultrasonic vibrator when the processing horn is attached. With a simple configuration in which the detection amount of the differential voltage detection circuit, which indicates the margin of the circuit, and the amount of current supplied to the vibrator drive circuit can be selectively instructed to one indicating device, the vibration can be easily controlled. The present invention provides an ultrasonic transducer drive device in which the cause of abnormal operation of the child drive circuit can be accurately ascertained and maintenance and inspection by operators are easy.
更に、本発明においては超音波撮動子の振動量、振動子
駆動回路の余裕度を表わす検出量及び振動子駆動回路へ
の供給電流量の正常動作時におりる各データを予め記憶
するメモリと、そのメモリに記憶された各データと試験
的な超音波振動時にｄ′３ける前記各データに対応する
容量との比較判別を行なうとともにその判別結果が予め
定められた範囲内に収まらないときその結果を自動的に
表示可能な表示装萄とを設（プたことにより異常状態及
び異常個所を作業者が簡単に識別し得、その保守、点検
、修理等の作業が容易な超音波振動子駆動装置が得られ
るという効果を奏するものである。Furthermore, in the present invention, a memory is provided that stores in advance each data of the amount of vibration of the ultrasonic sensor, the detected amount representing the margin of the transducer drive circuit, and the amount of current supplied to the transducer drive circuit during normal operation. , each data stored in the memory is compared and determined with the capacity corresponding to each data at d'3 during a trial ultrasonic vibration, and if the result of the determination does not fall within a predetermined range, the The ultrasonic transducer is equipped with a display device that can automatically display the results, allowing workers to easily identify abnormal conditions and abnormal locations, making maintenance, inspection, repair, etc. easier. This has the effect that a driving device can be obtained.
図面は本発明を超音波ウエルダーに具体化した一実施例
を示づ゛全体回路図である。
図中、１は超音波撮動子、３は振動子駆動回路、５は整
流回路、６は差電圧検出回路、８はロータリスイッチ、
９は電流計、１０はＣＰＵ、１９は起動スイッチ、２０
はテストスイッチ、２２はｌ−［０駆動回路、２１ま設
定スイッチである。
特許出願人The drawing is an overall circuit diagram showing an embodiment of the present invention in an ultrasonic welder. In the figure, 1 is an ultrasonic sensor, 3 is a transducer drive circuit, 5 is a rectifier circuit, 6 is a differential voltage detection circuit, 8 is a rotary switch,
9 is an ammeter, 10 is a CPU, 19 is a start switch, 20
2 is a test switch, 22 is an l-[0 drive circuit, and 21 is a setting switch. patent applicant
Claims (1)
び検出用素子を備えた超音波振動子と、その超音波振動
子の駆動用素子に交流電圧を印加して駆動する振動子駆
動回路と、 その振動子駆動回路に電ノコを供給づ−る電力供給回路
と、 前記超音波撮動子の検出用素子から出乃される交流信号
を前記振動子駆動回路に帰還する帰還回路と、 を右し、前記加工用ボーンを被加工物と当接させその加
工用ホーンに超音波振動を付与さけることにより被加工
物に加工を施すようにされた超音波加工機のための超音
波振動子駆動装置において、前記超音波振動子の動作状
態を指示づ−るための指示装置と、 前記電力供給回路から前記振動子駆動回路に供給される
電流値を検出する電流検出回路と、前記振動子駆動回路
からの交流信号と前記検出用素子からの交流信号との差
信号を演算する演算回路と、 前記加工用ホーンの敗者時において、操作可能な操作ス
イッチと、 その操作スイッチの操作に応答して前記振動子駆動回路
を有効化させ前記超音波振動子を超音波振動させるとと
もに、前記検出用素子からの交流信号と前記電流検出回
路からの電流値に比例づる検出信号と前記演算回路から
の差信号とのうちいづれか一つの信号に基づき前記指示
装置を駆動する制御回路と、 を設けたことを特徴とする超音波振動子駆動装置。 ２、前記制御回路は前記超音波振動子の正常運転時にお
ける前記検出用素子からの交流信号、前記電流検出回路
からの検出イに号、及び前記演算回路からの差信号のう
ち少なくとも一つの信号に関連づるデータを予め記憶す
る記憶回路と、イの記憶回路に記憶されたデータとその
データに対応する前記信号とを比較する比較手段と、そ
の比較手段に基づく比較結果が予め定められた範囲に収
まらな[Claims] 1. An ultrasonic transducer to which a processing bone is attachably connected and is provided with a driving element and a detection element, and an alternating current voltage is applied to the driving element of the ultrasonic vibrator. a power supply circuit that supplies the electric saw to the transducer drive circuit; and an AC signal output from the detection element of the ultrasonic sensor to the transducer drive circuit. a feedback circuit that returns to the workpiece; An ultrasonic transducer drive device for an ultrasonic transducer, comprising: an indicating device for instructing the operating state of the ultrasonic transducer; and detecting a current value supplied from the power supply circuit to the transducer drive circuit. a current detection circuit; an arithmetic circuit that calculates a difference signal between the AC signal from the vibrator drive circuit and the AC signal from the detection element; and an operation switch that can be operated when the processing horn loses. In response to the operation of the operation switch, the transducer driving circuit is activated to cause the ultrasonic transducer to vibrate ultrasonically, and the vibration is proportional to the alternating current signal from the detection element and the current value from the current detection circuit. An ultrasonic transducer driving device comprising: a control circuit that drives the indicating device based on one of a detection signal and a difference signal from the arithmetic circuit. 2. The control circuit generates at least one signal among an AC signal from the detection element, a detection signal from the current detection circuit, and a difference signal from the calculation circuit during normal operation of the ultrasonic transducer. a storage circuit for pre-storing data related to (a); a comparison means for comparing the data stored in the storage circuit (a) with the signal corresponding to the data; and a comparison result based on the comparison means within a predetermined range. It doesn't fit in
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21018182A JPS59118428A (en) | 1982-11-30 | 1982-11-30 | Driving device for ultrasonic vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21018182A JPS59118428A (en) | 1982-11-30 | 1982-11-30 | Driving device for ultrasonic vibrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118428A true JPS59118428A (en) | 1984-07-09 |
| JPH0427019B2 JPH0427019B2 (en) | 1992-05-08 |
Family
ID=16585116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21018182A Granted JPS59118428A (en) | 1982-11-30 | 1982-11-30 | Driving device for ultrasonic vibrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408248C (en) * | 2005-10-24 | 2008-08-06 | 中国电子科技集团公司第四十五研究所 | High-accuracy self-adaptation driving power for ultrasonic transducer |
-
1982
- 1982-11-30 JP JP21018182A patent/JPS59118428A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408248C (en) * | 2005-10-24 | 2008-08-06 | 中国电子科技集团公司第四十五研究所 | High-accuracy self-adaptation driving power for ultrasonic transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0427019B2 (en) | 1992-05-08 |
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