The 2 fixed position of 3 ＋ of numerical control machine tool and the distinction of 5 axial linkage?

[dispatch of net of machine tool of Chinese numerical control] a lot of people feel 3 ＋ machine tool of 2 numerical control is 3 axes machine tool plus 2 axes, actually otherwise. What most treatment industry place uses is XYZ3 axis machine tool, satisfy treatment requirement basically. But, facing what accurate treatment uses is 5 axes machine tool. Reader: As social progress, the development of science and technology, competition of machine tool industry is increasingly intense, production enterprise of each big machine tool rolls out high speed in succession 3 axes machining center and high speed 5 axes machining center, become more to the choice of machine tool user. If want to choose to suit oneself machining center, the 3 ＋ that understand numerical control machine tool with respect to need 2 fixed position and the distinction of 5 axial linkage. Small make up: One, 2 fixed position of 3 ＋ machine 　 　 　 1, notional 　 　 is in when program of milling of a 3 axes is carried out, two when use 5 axes machine tool runner shaft coming back secure cutting cutting tool the position that tilts in, 3 ＋ the name of 2 processing technique also from this and come, this also calls fixed position 5 axes machine tool, because the 4th axis and the 5th axis are to be used,be in certainly fixed locally the direction of cutting tool, is not continuous in machining a process. The 2 fixed position of 3 ＋ of numerical control machine tool and the distinction of 5 axial linkage? The principle that 2 fixed position of 3 ＋ machine is 3 axes function essentially in specific angle (namely " fixed position " ) the implementation that go up, say simply, turned when the machine tool namely after angle, or with common the means of 3 axes undertakes machining. 2, 　 of 　 of treatment advantage 　 (1) , can use shorter, the cutting cutting tool with taller tigidity. (2) , cutting tool can become proper point of view all right with the surface, main shaft head can be extended lowlier, closer from workpiece. (3) , distance of cutting tool shift is shorter, program code is fewer. 3, machine 3 ＋ of 　 of limitation 　 　 treatment of 2 fixed position is considered as to set a constant point of view to main shaft normally. Intricate work may ask oblique drawing of a lot of bend in order to cover whole work, but such meetings bring about jackknife of cutting tool method, increase handling time thereby. 2, 　 of 　 of 　 of treatment of 5 axes linkage 1, the regulation of notional 　 　 according to ISO, when the campaign that describes numerical control machine tool in the description, using left hand rectangular coordinates is; Among them parallel is Z axis at the reference axis definition of main shaft, the whirl that circles axis of X, Y, Z coordinate is A, B, C respectively. Normally 5 axes linkage is the random in pointing to X, Y, Z, A, B, C the linear interpolation of 5 coordinate moves. 2, 　 of 　 of treatment advantage 　 (1) , when treatment need not special clamping apparatus, reduced the cost of clamping apparatus thereby, avoided for many times to hold clip, raise a mould to machine precision. (2) , the use amount that reduced clamping apparatus. (3) , the leave out in treatment a lot of special cutting tool, thereby low cutting tool cost. (4) , the length of effective cutting blade that can increase cutting tool in treatment, reduce cutting force, improve cutting tool service life, reduce cost. 3, machine 　 of limitation 　 　 (1) , compare 2 fixed position of 3 ＋ , tigidity of its main shaft is poor. (2) , some circumstances are unfavorable adopt 5 axes plan, cutting tool is too for instance short, or knife handle is too big, make the operating mode of any banking angle issues indispensable vibration. (3) , compare 3 axes machine tool, treatment precision error is big. 3, 2 fixed position of 3 ＋ machine 2 fixed position of 3 ＋ and the 　 of discriminative 　 　 of 5 axial linkage to machine applicable industry target to differ with 5 axes linkage, treatment of 5 axes linkage suits curved surface treatment, 2 fixed position machine 3 ＋ agree with planar treatment. In cost respect, 2 machine tools of 3 ＋ far under 5 axes machine tool; In functional respect, 2 machine tools of 3 ＋ basically can realize the function of machine tool of 5 axes linkage. CNC Milling