龙门锯床恒流变速锯切与模拟电路

Constant Current and Variable Speed Sawing and Analog Circuit of Gantry Saw

龙门锯床进锯机构采用三相桥式全控整流电路直流调速系统。模拟部分为双电流环模拟电路单元,触发器选用六脉冲触发组件板。上述两块电路板构成的控制单元可以实现恒流变速锯切。即:锯片传动电动机电流设定值确定的条件下,锯片传动电动机电流恒定,进锯机构则按锯片传动电动机的电流值自动地改变进锯速度。该锯切工艺可以提高工作效率,对锯片传动装置因故障发生堵转有较好的预防作用。

DC speed adjusting system is used in feeding mechanism of gantry saw. The analog part is the unit of analog circuit of double current loop. A six pulse trigging module is used for trigger. The control unit composed of the above mentional two boards can realize constant current and ↓variable speed sawing,i. e. once the value of current of motor for driving saw is given,the current will be constant and the feeding speed will change automatically by the given current. This process can increase efficiency and prevent trouble of driving system of the saw.