利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN101254559B 数控电火花线切割加工间隙峰值电压调压装置 失效 - 权利终止

数控电火花线切割加工间隙峰值电压调压装置
摘要：
本发明公开了一种适用于数控电火花线切割机床的加工间隙峰值电压调压装置，该调压装置由全波整流电路(1)、过零检测电路(6)、脉宽调制电路(5)、相位振幅调制电路(2)、解调回路(3)组成；AC220V电压经全波整流电路(1)后输出振幅调制波给相位振幅调制电路(2)；AC220V电压经过零检测电路(6)后输出相位调制波给相位振幅调制电路(2)；脉宽调制电路(5)输出PWM高频载波给相位振幅调制电路(2)；相位振幅调制电路(2)输出同相位调幅波给解调回路(3)，解调回路(3)输出与输入AC220V交流电相同波形的正弦波给全波整流滤波电路(4)。本发明的加工间隙峰值电压调压装置具有过零检测功能，过零检测电路中的触发脉冲的脉宽大小和相位可控。
摘要（英）：

The invention discloses a peak voltage regulating device for processing slit for numerical control electro-sparking wire cutting machine tools, and comprises a full-wave rectification circuit (1), a zero-crossing detection circuit (6), a pulse width modulation circuit (5), a phase amplitude modulation circuit (2), and a demodulation loop (3). The full-wave rectification circuit (1) outputs an amplitude modulating wave to the phase amplitude modulation circuit (2) when an AC 220V voltage passes through the full-wave rectification circuit (1); the zero-crossing detection circuit (6) outputs a phase modulation wave to the phase amplitude modulation circuit (2) when the AC 220V voltage passes through the zero-crossing detection circuit (6); the pulse width modulation circuit (5) outputs a PWMhigh-frequency carrier wave to the phase amplitude modulation circuit (2); the phase amplitude modulation circuit (2) outputs an in-phase modulation wave to the demodulation circuit (3); and the demodulation circuit (3) outputs a sine wave having the same waveform with the input AC 220V voltage to a full-wave rectification and filtering circuit (4). The peak voltage regulating device of processingslit has zero-crossing detection function, and the magnitude of pulse width and the phase of trigger pulse in the zero-crossing detection function are controllable.

公开/授权文献
0/0