Tapping is a common processing technology in machining, so tapping machine is an essential equipment in the production of enterprises. The servo control CNC tapping machine has adjustable torque and speed, and has good overload protection function, which overcomes the shortcomings of easy breaking of taps caused by irregular torque of ordinary lathes, drilling machines and manual tapping, and is widely used in machine tools, molds, printing and packaging industries with its dexterity and high efficiency.
The servo-controlled CNC tapping machine adopts a multi-rod structure design, with the characteristics of rocker arm suspension, simple and practical structure, and its mechanical structure is mainly composed of a fixed seat, a slewing arm, a lifting rod, a suspension arm and a universal head.
The holder is used to fix the overall position of the CNC tapping machine, and the CNC tapping machine is fixed on the workbench or directly to the large workpiece to be tapped by 4 screws. One end of the slewing arm can rotate around the central axis of the fixing seat, and the other end is connected with the lifting rod for adjusting and locking the lifting support in the vertical direction (y-direction), and the thrust bearing is installed at the adjacent place, so that the support can rotate around the lifting rod conveniently. The bracket is attached to the boom, so the height of the boom can be adjusted by adjusting the position of the tapered locking sleeve.
The suspension arm is designed with an equal-length double-rocker mechanism, and the connecting rod in this parallel four-bar mechanism is only translational; The universal head is fixed on the connecting rod, so when the suspension arm is opened and closed, the universal head is also translated, and the orientation of the universal head relative to the connecting rod is always the same. A gas spring device is designed between the rocker and the hinge, and the stiffness of the gas spring is adjusted by adjusting the nut, so as to adjust the tightness and flexibility of the suspension arm to open and close. The hovering arm has a levitation characteristic and can be stopped in any position that is pulled apart and closed. The suspension arm can slide up and down along the lifting rod through the bracket, and can rotate around the lifting rod. The design of the suspension arm improves the stability of the operation of the CNC tapping machine and expands the working space of the CNC tapping machine. The universal head mechanism is installed at the end of the suspension arm, which can rotate around the y-axis and the x-axis, and the servo motor installed on the universal head directly drives the tapping chuck to carry out all-round tapping operation on the workpiece.