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1 PCB engraving machine on the blank line plate blank line board is in theinsulating matrix paste covered with a layer of conductive copper. From the basic principle of PCB engraving machine, process of making a piece ofcircuit board, is to use the principle of milling moment, the excess partmilling on the circuit board, not necessary to go to the one. With the traditional carving similar, the difference lies in the traditional carvingprocess using manual, this machine makes the machine automatically using the numerical control principle.

2 computer carving path

To complete the production of a circuit board, the first step is to know which part is to be retained, which is in part to milling cutter along to, let what pathto reach the objective. In this system, we use the high speed operation performance of the personal computer, access to relevant information from the PCB file PROTEL in the algorithm, after the conversion, to obtain the spindle cutter head movement of the line, this process is called computerengraving path.

The 3 command transmission

Control software acquisition circuit board processing information from the PCB file, the automatic conversion, decomposed into circuit board manufacture acceptable individual action commands, and this one action command set up to form a processing path for the machine PCB engraving machine. When receiving user command, such as users press "carving " button, control software will be processing path through the serial communication interface to transmit the order one by one to makemachine circuit board. The circuit board making machine after each action instruction, complete the signal to the computer report command. After all the work is completed, the control software to machine transmission to stopinformation, the machine stops working.

According to the computer to transmit the instruction, circuit board production machine central processor according to the motion control principle, control the speed, direction and coordination work three stepper motors, completing the instruction sends an instruction to the computer to complete the signal.

4 combined motion control

In this PCB engraving machine, three linear motion guide independent of each other mutually perpendicular installation the.Y axis pulley drives the working platform before and after exercise.X axis pulley drives the Z rail andthe spindle motor is installed on the Z rail around the motion of the.Z axis PCB engraving machine spindle is driven by a motor movement up and down. The three axis in coordination under the control of CPU the main shaft drives, high-speed rotation of the tool relative to the workpiece to dothree-dimensional movement, thus the workpiece (PCB) processed to meet the user requirements of the product.

For example, when the Z axis and the tip is slightly lower than the staticcircuit board surface, the Y axis static, X axis movement. At this time thesurgeon with a straight line will be milled X direction on the circuit board,nose width width.X axis static equivalent of the tool, the Y axis moving,surgeon with would carve out a the straight line in the Y direction, when X, Yand also moving at the same speed, tool PCB engraving machine will be engraved with a 45 degree oblique line on the circuit board. The control of X and Y respectively in different velocity, can be carved line of different angles in the plane, control the movement distance, through a variety ofcombined in plane is carved out of different shapes.

When the Z axis tip above the stationary and the board surface, the tool of PCB engraving machine will need to carved through the movement of mobile X and Y points.

When the XY static, Z axis moving down the line plate thickness, SMT machine, spindle motor drives the drill bit in the circuit board positioneddrilling.