Exceed strong cutting tool the laser ablation treatment of three-dimensional profile
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- source:DDON CNC Machining
010 μ M, can obtain grind treatment with essence of life similar material purify rate and surface are bright and clean degree. With treatment parameter (be like speed of emery wheel diameter, emery wheel) constant change and the grinding treatment that affect each other are different, the treatment parameter of laser ablation is had can forecast a gender, and won't mutual influence. Material purify rate gets the control of laser pulse frequency and mode. As a result of every laser pulse metropolis aerification drops material of a small workpiece, the frequency of laser pulse is accordingly taller, material purify rate is higher also. The limits of frequency of programmed control pulse of center of Spectra laser beam machining is 0 - 100 KHz, to achieve good appearance bright and clean degree, use treatment of complete frequency limits normally. The surface is bright and clean degree of function that is laser pulse frequency and motion of machine tool axis, both all can ask to undertake adjustment according to the geometrical profile of cutting tool. Be led to affect to material purify by profile of treatment cutting tool or appearance of geometry of the stage that break bits very big. Spectra machining center uses a kind " circuitous " process designing technology comes purify workpiece material. When be being machined with this technology, the straight path around that stimulates the axis of workpiece edge Y below beam of light is mobile. When the terminus that stimulates beam of light to machine cutting tool profile, workpiece can go to below one to machine the position along X axis sideslip, begin to move along Y axis around again. Workpiece moves line by line continuously with this kind of means, till finish,machine to the ablation of whole face. Next, it is certain to stimulate axis of Z of edge of beam of light to drop height, undertake machining on next horizontal. In a word, the treatment means of Spectra machine tool is: Workpiece presses process designing method line by line translation, and stimulate beam of light to chase a layer to be down shift, till complete treatment gives whole profile. The insular state that if be gone up to have bits stage to design middling by treatment profile,sees is raised, should use optimized material purify strategy, machine cycle time in order to shorten. Typical material purify strategy includes " jump function " (namely from insular shape raised upper part is jumped over, in jump method comparing bypasses the treatment of raised place is used when way is shorter) and " shortcut function " (the shortest way that be planned to carry different geometry element namely by treatment software, although operate the program way of personnel staff,likelihood and this differs) . Once open these functions, they can move automatically. The hardness of workpiece material also can affect material purify rate. Nevertheless, although hard alloy, pottery and porcelain, PCD is mixed the hardness of PCBN material each are not identical, but its material purify is led mutual between the difference is not big, because,this is material hardness must six to one (if hard alloy is opposite at mild steel) , ability will be right material purify rate produces bigger effect. In laser ablation treatment, the surface is bright and clean degree (or exterior integrality) also have can charge a sex -- mention before no less than, focusing quality and laser power can control the appearance bright and clean degree. In addition, with Spectra software choice treatment parameter also is met influence surface is bright and clean degree. Develop mode and software character through frequency of power of adjusting control laser, pulse, arteries and veins, the treatment surface surface roughness of PCD and PCBN cutting tool can achieve Ra0.
2 μ M, the exterior surface roughness of hard alloy cutting tool can achieve Ra0.
45 μ M. Laser ablation is a kind of noveller treatment technology, in exceed hard data (include foregone the hardest diamond) three-dimensional profile nicety machines a domain to have development latent capacity extremely. CNC Milling