Application of multi-station turntable machining

Application of multi-station turntable processing An ordinary CNC lathe, four stations can accommodate four knives, which can be held manually. Then the lathe can be replaced automatically, and it can be replaced four times. Generally speaking, it is a CNC horizontal lathe. In addition, Wuxi CNC Machining Center CNC lathe multi-station turntable has six stations and eight stations.

The appearance of these four stations is similar to the square tool rest of ordinary lathe, and the six stations and eight stations are brick tower structures with slightly larger capacity and more processing contents at one time. When six stations process large parts, adjacent tools may interfere, while four stations do not have this problem.

Characteristics of multi-station turntable machining

Generally, four knives can be installed, and a worm with a turbine at one end is installed in the tool holder. The contact surface between the tool rest and the base is respectively provided with an end gear and two limit blocks. In general, the motor and the connecting shaft worm are installed on the base engaged with the gears at both ends, and the four-station electric tool rest is generally composed of motor, mechanical tool changing mechanism and transmission disc. The specific tool changing actions of the automatic rotary tool rest are as follows.

The CNC system outputs the tool changing signal-the relay in the —PLC control signal output control circuit acts-the tool rest motor starts to find the tool in the forward direction-the tool rest lifting screw lifts the needle plate to a certain height-the tool rest rotates in the forward direction, the clutch pin enters the clutch plate groove to drive the needle plate, and the needle plate drives the upper tool body to move-the detection element detects the tool position signal-the tool rest motor reverses and locks-the tool rest motor is powered off-the processing sequence.

The tool rest receives instructions in the form of pulsed electric waves. When the tool change instruction is received, the worm of the motor drives the turbine, and the worm of the tool rest rotates at the same time to separate the gears on the lifting end face of the tool rest. When the tool rest rises to a certain extent, the tool rest rotates together with the tool rest worm, and after rotating 90 degrees, it is blocked by the limit block. When the blocking force of the motor reaches a certain level, it begins to reverse, and the natural tool rest descends to the gear on the end face of the base to lock the limit block.