Summary: ? Piao reads ヅ of difficult heart of instrument of saute of ＞ Lie garden to drop oyster of ば holding sb in respectful awe appears dark green of of Tao of Dong Ji to flatter? of τ of river of Zhui of grave of instrument of saute of ＞ Lie garden put forward the cut on online cut machine tool to be over after the sunken antrum of the mould, do not disassemble workpiece, use install the pneumatic polish head on the machine tool to undertake polishing, the numerical control function that uses a machine tool undertakes controlling to polishing contrail. Slant mediumly through adjusting numerical control program the control that buy parameter realizes pair of polishing pressure, realize polish of constant voltage force. Test and verify of the Si in be being machined actually the feasibility of this method, obtained: of better treatment effect keyword? ＞ Yin drops Piao of of buy of Chang of Gao of of thorium of Pi Ka lax hires brown bear of lax of Dong Bin Ka to need of た tip month quarrels word destroy ＞ knocks at? of of the Bao that do garden but if have the mould face that cut crosses polishing again,handle, make its reach the level of lens face, can improve product quality and mould life greatly. Because surface roughness of mould antrum surface improves one grade,this is, mould life can raise 50%[5]; additional, the finished cost that takes silk thread cut quickly is relatively inferior. The mould surface that has machined to line cut in our country still uses artificial polish, polishing workload is big, efficiency is low, labor strength is great, tall to technical level requirement of the worker. Accordingly, the proper place on online cut machine tool installs pneumatic polish device, be over in cut after the sunken antrum of the mould, do not disassemble spare parts (right now the relative position relation of workpiece and machine tool still does not have change) , the numerical control function that uses a machine tool undertakes controlling realizing the polish of the mould to the contrail of polishing, take the craft range of machine tool of silk thread cut quickly to expanding, the treatment quality that improves a machine tool has important sense. One, the installation of pneumatic rag wheel on the machine tool and if the graph is shown 1 times,adjust, throw pneumatic shaven head 3 with clamping apparatus 2 join are in of aluminous silk on near guide pulley, the join below U-V axis board on. Attention, adjust aluminous silk and workbench first perpendicular, adjust clamping apparatus next 2, make the axis of pneumatic head as vertical as workbench also, originally clamping apparatus closely again. At this moment the axes of pneumatic head and imprison silk machine Duan Ping to go and differ locally in the space an invariable Lx and Ly. 2, the implementation measure that polishing machines (1) according to lumen of general workpiece of treatment measure cut, the take out after treatment is finished more than makings, do not disassemble workpiece, can make sure the relative position of workpiece and machine tool is not changed so. (2) smokes molybdenum silk, secure molybdenum silk Chu Si canister to go up. Shut the fracture of wire on the machine tool to protect a function, otherwise, the system can report " molybdenum silk already was broken, ask repair! " make treatment cannot continue. (3) closes cutting fluid valve, lest fluid of the cutting in polishing splatters, affect the on the rails that polishing machines. (4) cleans cut to machine the surface with kerosene, use bombazine wipe up, for polishing exercise offers clean by treatment surface. (Did not impose a plan) (the function of fast fixed position that 5) uses a machine tool to go up, the center of rag wheel shift reachs last the position that the program begins, namely X direction is mobile - Lx, y direction is mobile - Lyo is like at this moment run the program in front again, criterion the athletic contrail of rag wheel center is last the athletic contrail of aluminous silk. (6) modifies a program. Because the diameter of rag wheel and aluminous silk is different, reason should revise a program to slant mediumly buy quantity. By cut clearance of medium imprison silk radius, discharge is mixed the H1 of polishing surplus the sum of obligate turns into the poor O(7) that the polishing pressure control of the radius of rag wheel and rag wheel measures machines ply adjustment slide block to drop rag wheel through adjusting, make its are in the position of treatment on perpendicular direction. Next, open air compressor to give polishing head air feed. After waiting for pressure to reach the value that establishs beforehand, often open pneumatic head park the position. At this moment rag wheel rotates, press carriage return next, rag wheel will begin polishing to work below the control of numerical control system (machine program summary) . 3, line of outline of workpiece of introduction of polishing experiment craft is shown 2 times like the graph, material. 12MoV, ply 2Omm, 5OHRC of heat treatment hardness. The rated rotate speed of pneumatic polish head is the Nin of 25000, rated atmospheric pressure is 0.
64Mpa. The machine tool uses the DK7732A that factory of Han Chuan machine tool produces numerical control to take machine tool of silk thread cut quickly. Through measuring, before polishing model antrum surface surface roughness is Ra25 this world. The sand paper that uses 400# is thick the white electric spark that casts purify surface layer, exterior surface roughness achieved Ra1.
Half essence tosses the sand paper that 6 μ M; uses 800# , 1000# next, exterior surface roughness achieved Ra0.
The polish of green oxidation inscription of W28 of reoccupy of 8 μ M; , exterior surface roughness achieved Ra0.
32 μ M. Contented and general mould work spare parts cooperates exterior surface roughness (Ra0.
4 ～ 1.
The requirement of 6um) . Structure of 4 rag wheel shows the configuration that is rag wheel 3 times like the graph. Main body part uses 45 steeliness to build, on half are cast part of bareheaded connective standard with pneumatic, below half lining is flexible material, outer the flannelette that is sand paper or Tu Yan crocus. 5, note (answer in treatment of 1) report cut debus rag wheel, lest machine the generation in the process,interfere a phenomenon. (2) uses polishing technology for many times, change strictly according to polishing craft rag wheel revises correspondence slant buy quantity. (3) should wash the polishing face of workpiece strictly between different polishing process, in case sundry the effect of bequeath influence polish. (If 4) workpiece has taper, should change the rag wheel that contains corresponding taper, in will casting the taper in light path foreword to machine an instruction to cancel O(5) to machine, answer strict according to ahead of schedule the polishing pressure control of demarcate slants buy quantity modifies a program. The advantage of 6 this methods this method made full use of the numerical control function of the machine tool, after online cut machine tool holds clip last time achievable cut and polish two working procedure, decreased for many times to install the fixed position error that places generation, reduced labor intensity of the worker, improved polishing quality and manufacturing efficiency, enlarged the craft limits of line cut machine tool. Additional, can slant through pressure of polish of experimental means demarcate buy quantity, adjust next slant buy is measured (can achieve 1 μ M) , can control the pressure between rag wheel and workpiece accurately, improve polishing result thereby. Theoretic, the athletic contrail of the theoretical exercise contrail of rag wheel center and aluminous silk is a law to equidistant, also make rag wheel center and treat polishing surface between law to equidistant, reason polish rotate keeps changeless with the pressure on workpiece, can realize polish of constant voltage force so. The problem of 7 existence and proposal (noise of 1) pneumatic head is bigger, need installs isolator. (The treatment ply of 2) machine tool adjusts slide block is manual, control not easily, reason polish trace is same way. If turn the athletic numerical control of this direction, will improve polishing result greatly. (Craft of 3) this polish is aimed at sunken model only. Part of workpiece pointed part is easy the limitation that is machined space or curvilinear curvature radius, additional, narrow seam because rag wheel diameter is affected and place cannot work CNC Milling