KR20010038216A - Torque control circuit for electric driver - Google Patents
Torque control circuit for electric driver Download PDFInfo
- Publication number
- KR20010038216A KR20010038216A KR1019990046106A KR19990046106A KR20010038216A KR 20010038216 A KR20010038216 A KR 20010038216A KR 1019990046106 A KR1019990046106 A KR 1019990046106A KR 19990046106 A KR19990046106 A KR 19990046106A KR 20010038216 A KR20010038216 A KR 20010038216A
- Authority
- KR
- South Korea
- Prior art keywords
- motor
- load current
- electric driver
- torque
- voltage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
본 발명은 전동드라이버의 토크 제어에 관한 것으로서, 더욱 구체적으로는 전동드라이버를 제어하는 제어장치와 연결하여 사용되는 전동드라이버내의 모터에 대한 나사 체결 토크를 측정하는 토크값 산출 회로에 관한 것이다.The present invention relates to torque control of an electric driver, and more particularly, to a torque value calculating circuit for measuring screw tightening torque for a motor in an electric driver used in connection with a control device for controlling an electric driver.
종래의 전동드라이버에 대한 토크제어 체계는 전동드라이버내에 별도의 토크제어 회로가 구비되어 있지 않고, 전동드라이버를 제어하는 제어장치로부터 오는 토크값을 받아서 나사를 체결하는 형태로써, 이러한 형태의 전동드라이버 토크제어는 제어장치로부터 나오는 토크값과 실제 전동드라이버와 접촉되는 나사에 전달되는 토크값 사이의 오차가 상대적으로 커지며, 오차에 대한 정확한 수치를 알지 못하여 오차에 대한 보상이 이루어지지 못하기 때문에 정밀한 부품에 대한 나사 체결시 원하는 토크로의 정확한 나사 체결이 이루어지지 못하는 단점이 있었다.Conventional torque control system for the electric driver is not provided with a separate torque control circuit in the electric driver, the form of tightening the screw to receive the torque value coming from the control device for controlling the electric driver, this type of electric driver torque The control has a relatively large error between the torque value coming from the control device and the torque value transmitted to the screw that comes into contact with the actual electric driver, and since the compensation for the error is not made because the exact value of the error is not known, There was a disadvantage in that the screw tightening to the desired torque can not be achieved when the screw is tightened.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 전동드라이버를 구동하는 제어장치와 연결하여 사용하는 전동드라이버에 있어서, 전동드라이버 제어장치에서 발생한 토크값을 정확히 전동드라이버에 전달하며, 전달된 토크값에 대한 오차가 발생할 경우 이를 피드백하여 효과적으로 토크값을 보상하는 전동드라이버 토크 제어회로를 제공하는데 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide an electric screwdriver in connection with a control device for driving an electric driver, the torque value generated in the electric screwdriver control device to exactly the electric driver The present invention provides an electric driver torque control circuit which transmits and feeds back an error when an error with respect to the transmitted torque value occurs.
상기의 목적을 달성하기 위한 본 발명의 토크 제어회로는, 전동드라이버내에 구비된 구동 모터(30) 전단에 나사 체결시 발생하는 부하전류를 감지하는 검지저항 (20)과 전원 증폭기(10)로 구성되는 것을 특징으로 한다.The torque control circuit of the present invention for achieving the above object is composed of a detection resistor 20 and a power amplifier 10 for detecting a load current generated when the screw is fastened to the front end of the drive motor 30 provided in the electric driver. It is characterized by.
제1도는 종래의 전동드라이버1 is a conventional electric driver
제2도는 본 발명에 의한 전동드라이버 토크제어 회로도2 is a torque control circuit diagram of an electric driver according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
10: 전원 증폭기부 12: 기준 전압10: power amplifier section 12: reference voltage
14: 외부 입력 전원 20: 검지 저항부14: external input power supply 20: detection resistor
22: 검지저항 입력전압 30: 전동드라이버 모터부22: detection resistance input voltage 30: motor driver motor unit
32: 모터 입력전압32: motor input voltage
이하 첨부된 도면을 참고하여 본 발명의 전동드라이버 토크 제어회로를 상세히 설명하면 다음과 같다.Hereinafter, the electric driver torque control circuit of the present invention will be described in detail with reference to the accompanying drawings.
먼저, 전동드라이버내 모터(30)의 저항값 산출을 위하여, 기준 전압(12)이 입력되어 증폭되는 전원 증폭기(10)에서의 출력 전압인 검지저항 입력전압(22)과, 부하전류를 검지하기 위하여 설치한 검지저항(20)에 대한 조합에 의하여 부하전류를 산출하고,First, in order to calculate the resistance value of the motor 30 in the electric driver, the detection resistor input voltage 22 and the load current, which are the output voltages of the power amplifier 10 to which the reference voltage 12 is input and amplified, are detected. The load current is calculated by the combination of the detection resistors 20 installed in order to
*부하전류 = 검지저항 입력전압(22) / 검지저항(20)* Load current = detection resistance input voltage (22) / detection resistance (20)
산출된 부하전류와 전동드라이버내 모터(30)에 입력되는 모터 입력전압(32)에 대한 조합에 의하여 모터의 저항값을 산출한다.The resistance value of the motor is calculated by the combination of the calculated load current and the motor input voltage 32 input to the motor 30 in the electric driver.
*모터의 저항값 = 모터 입력전압(32) / 부하전류* Motor resistance = motor input voltage (32) / load current
또한, 모터의 출력에 대한 토크값을 산출하기 위하여, 상기와 같이 산출된 모터의 저항값을 기초로 하여, 모터의 저항값과 모터의 입력전압(32)의 조합, 또는 부하전류와 모터의 입력전압(32)의 조합에 의하여 모터의 출력이 산출된다.Further, in order to calculate the torque value for the output of the motor, a combination of the resistance value of the motor and the input voltage 32 of the motor or the load current and the input of the motor, based on the resistance value of the motor calculated as described above. The output of the motor is calculated by the combination of the voltages 32.
*모터의 출력 = 모터의 입력전압(32) x 모터의 입력전압(32)/모터* Motor output = motor input voltage (32) x motor input voltage (32) / motor
의 저항값Resistance
= 모터의 입력전압(32) x 부하전류= Input voltage of motor (32) x load current
상기와 같은 과정에 의한 모터의 토크값은 상기에서 산출된 모터의 출력과 모터에 부착되어 최종 출력을 나사에 전달하는 기어의 감속비에 의하여 결정된다.The torque value of the motor by the above process is determined by the output ratio of the motor and the reduction ratio of the gear attached to the motor to transmit the final output to the screw.
상기와 같이 본 발명은, 전동드라이버를 구동하는 제어장치와 연결하여 사용하는 전동드라이버내의 제어장치에서 발생한 토크값을 정확히 전동드라이버에 전달하기 위하여, 또한 전달된 토크값에 대한 오차가 발생할 경우 이를 피드백하여 효과적으로 토크값을 보상하기 위하여 전동드라이버 토크 제어회로를 구성한 것이다.As described above, the present invention, in order to accurately transmit the torque value generated in the control device in the electric driver used in connection with the control device for driving the electric driver to the electric driver, and also if the error about the transmitted torque value occurs feedback In order to effectively compensate the torque value, an electric driver torque control circuit is constructed.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046106A KR20010038216A (en) | 1999-10-22 | 1999-10-22 | Torque control circuit for electric driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046106A KR20010038216A (en) | 1999-10-22 | 1999-10-22 | Torque control circuit for electric driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20010038216A true KR20010038216A (en) | 2001-05-15 |
Family
ID=19616556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990046106A KR20010038216A (en) | 1999-10-22 | 1999-10-22 | Torque control circuit for electric driver |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20010038216A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07136939A (en) * | 1993-11-24 | 1995-05-30 | Semu Network:Kk | Method and device for confirming finish of screw fastening by electric screwdriver |
| JPH081536A (en) * | 1994-06-27 | 1996-01-09 | Matsushita Electric Works Ltd | Torque controller for electric screw driver |
| JPH08197444A (en) * | 1995-01-27 | 1996-08-06 | Shibaura Eng Works Co Ltd | Nut runner |
| JPH09183074A (en) * | 1995-12-28 | 1997-07-15 | Ricoh Co Ltd | Automatic screw fastener |
-
1999
- 1999-10-22 KR KR1019990046106A patent/KR20010038216A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07136939A (en) * | 1993-11-24 | 1995-05-30 | Semu Network:Kk | Method and device for confirming finish of screw fastening by electric screwdriver |
| JPH081536A (en) * | 1994-06-27 | 1996-01-09 | Matsushita Electric Works Ltd | Torque controller for electric screw driver |
| JPH08197444A (en) * | 1995-01-27 | 1996-08-06 | Shibaura Eng Works Co Ltd | Nut runner |
| JPH09183074A (en) * | 1995-12-28 | 1997-07-15 | Ricoh Co Ltd | Automatic screw fastener |
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| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |