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PCB Processing

Printed Circuit Board Processing

The processing of printed circuit boards involves two important cutting procedures, the first being to drill the conducting channel between circuit layers and fixture the pores for welded components, and the second being to cut the PCB into the required dimensions by using routing machine. PCB has become a vital component in the highly development currently which in information, communication and electronic industries. Many mainstream PCB producers choose Tongtai Machine & Tool's drilling and routing machine in order to meet their stringent requirements and satisfy the requirement of processing speed and precision.

Printed Circuit Boards

PCB Drilling Machine

Tongtai's SD & SR series CNC drilling machines have 1 to 7 processing spindles which are able to fit with various board dimensions and different sorts of mass production requirements. The machines’ main frame and main components are made from highly stable cast iron, enhancing its processing precision and stability. The Z-axis structure is made from light weight and high rigidity aluminum alloy. Not only improved the processing efficiency, it also offers good vibration absorptivity. The spindle of the SD series can reach up to 250,000rpm, and equipped with a 400 tools/axis capacity of automatic tool changer system, laser tool measuring system and broken bit detection system. The patented pressure foot has high reliability and high chip collection capability which can improve the processing accuracy. The SIEB & MEYER controllers can achieve a processing speed of 125us in addition to providing an outstanding human machine interface, thus allowing for highly accurate depth control functions.

Strong rigidity structure design

Light weight Z-axis structure

SEIB & MEYER controllers

Real-Time Broken Bit Detection

The theory of contact Bit Detection, is to judge if the tool, work piece and machine become a circuit. When the tool is in a good condition, the tip of the tool can touch the surface of the board (has to be conductive material), thus become a circuit. However, when the bit broken, the tool will not be able to touch the surface which fail to become a circuit.

Conducting circuit

Broken bit status

Depth Controlled Peck Drilling

Depth controlled peck drilling, the function which combined with the real-time broken bit detection and peck drilling. Machine’s operators can set the parameters on the control page, and also insert the parameters into the processed material's code to avoid any human errors.

Depth control

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