Study And Application Of Some Key Techniques Of High Accuracy And High Speed PCB NC Drilling Machine

The technology of PCB manufacturing is the important foundation and composing of electronic information manufacturing industry. The PCB NC drilling machine is key technology equipment in the PCB's precise hole site processing. It brings higher demands to PCB NC drilling machine that the electronic products become smaller, lighter and thinner such as communication computer and audiovisual equipments. The high accuracy, high speed, smaller hole and short runs have become obstacles of new PCB NC drilling machine developing and increasing. Nowadays, the high accuracy and speed PCB NC drilling machine has become a confined factor of level of electronic manufacturing industry and embodiment between our electronic manufacturing industry and advanced level in world margin. It is important and realistic meaning for increasing the level of our electronic manufacturing technology equipments and self-supporting ability of electronic manufacturing industry to develop the key technique of the high accuracy and speed PCB NC drilling machine and improve its performance.Be dead against the demands and characteristics (namely the high accuracy, high speed, short runs, hole more but smaller) of hole site processing of PCB NC drilling machine, some methods that can completely improve keys technique index of the machine will be proposed in this paper. First, based on the PCB technology demand, the developing tendency and the hole processing state, the main direction and aiming of drilling machine system performance increasing was proposed, which achieve high accuracy, high speed and the ability of processing micro-hole. Judging standards and accuracy influence factor of micro-hole process quality will be established. The effect factors of drilling will be analyzed. Next, propose the concept and token method of the 3D-stabilization. Simulate the PCB NC drilling machine dynamic characteristic with the 3D-stabilization basing on the multi-body dynamic numerical model. Look for a feasible method and technology parameters to increase the process micro-hole ability. The third, be dead against the effect of acceleration variety in the high-speed process continuous short distance weld disk, a kind of self-adapted algorithm according to three times smooth curvilinear is proposed in order to ensure the accuracy of position fix when high speed feeding. At the same time, apply a kind of trail controller usingself-adapted controller to induce the effect arisen by the torque vibration because of load, frication and so on. Finally, be dead against efficiency of route optimizing and data processing, Greed algorithm (GA) is put forward. The coding rule, joining and aberrance method basing on the GA are introduced. Obtain good engineering application result.