Compressor makes medium cutting tool improve

5, efficiency is low, precision requirement also is couldn't get assure. To this phenomenon, the author considers all the time whether complete treatment and achieve blueprint to design a requirement. Through anatomize, apply CAD subdesign, the decision undertakes be improvemented thoroughly to using cutting tool and tool formerly. Tool fights in coordination by the author and experienced experienced worker, design with two days of time only, and plot is handed in be in charge of machining by relevant section. Angle of cutting tool geometry, appearance passes theoretical calculation, embryonic form already also was provided first, next the problem is how to come out cutting tool treatment. Undertake invite public bidding for this my factory specially, two cutting tool that have aptitude make an enterprise participate in bid. Among them, one puts forward to need one-time order goods 200, and unit price is controlled in 200 yuan, a batch of cutting tool are aggregate about 40 thousand yuan, this manufacturer still rejects grain to have something made to order try a knife; Another direct place expresses to be able to have something made to order, but unit price must be 2000 yuan, and delivery cycle is longer. Through careful consideration, we decide we start work finally assume cutting tool to change make the task. All-purpose tool grinding machine that uses a workshop to have undertakes machining, use homebred high-speed steel great spire of 22 awl handle establishs Ф milling cutter undertakes changing making, above all blade grinds milling cutter front, wear pours taper, unilateral is inclined 8 ° shape. Build the part before grinding next, increase space of the chamfer that hold bit (in the light of appearance of the chamfer that hold bit and fabricating characteristics, specially and cutting tool of some Japan brand are made quite, discover far excel its cutting effect, specific in the 2nd part straight handle establishs milling cutter to make simple introduction) , avoid to increasing feed phenomenon of the accumulation that cut bits appears when fast milling. Last working procedure builds the part after grinding namely, hind part is too small cannot be cut move work, too big make cutting tool point breaks off easily again. Because this is aimed at the treatment circumstance of this knife, horn chooses 8 ° after, through steel of exchange qualitative 45# , try cutting effect point-blank special ideal, when full knife cuts deep 10mm very smooth. Introduce the structural principle of tool simply incidentally here, its are main the component is filar lever, dextrorotation gear of inclined tine cylinder, bolt, chassis waits composition a moment, lead of circumgyrate a week is 16. Its job principle is to arrange hour hand to turn handwheel drives filar lever to turn, make gear of inclined tine cylinder makes anticlockwise roll (suffer force to analyse according to helical gear, when anticlockwise roll, axial force F up) , rotational a week while rise a lead, the structure goes to the lavatory simply practical. After cutting tool installs main shaft of Yu Xi bed, establish milling head to arrange hour hand to pull turn 7.

5 ° , tool water paper-cover is placed on milling machine workbench, the spare parts is installed go up at its. The result that after trying treatment, gets makes a person shake, face treatment finished whole helix flange to use 5 minutes only, efficiency comparing raises 5 times formerly, cutting tool durability is 2 times formerer, achieve every to machine 200 to repair grind point, sheet achieves rate of cutting tool repeated usage 10 times; And each standard accords with the spare parts completely blueprint requirement. Before this, helix flange face ever also tried to use ball head milling cutter to machine in machining center of vertical of 3 axes linkage (establish milling cutter to machine helicoid to have interference) , not only handling time is longer, and stay in tine root place have radius of head of cutting tool ball, need via fabricating. Of course, this cutting tool machines clutch flange to be able to be achieved likewise in four-axle above machining center expect the result. Straight handle establishs milling cutter to improve the material of filling closet to use 2Cr13 high grade stainless steel, there is the annular chamfer of 200mm of wide 12mm, deep 20mm, diameter in end panel, see a picture 4. Use 12 high-speed steel of homebred Ф at first straight handle establishs milling cutter treatment, cut deep 5mm, treatment does not cut bits to 5 minutes conglutinate is on milling cutter tooth, make cutting condition exasperate, blade of milling cutter collapse, dao Pin is changed in treatment numerous, efficiency is very low, machine an annular chamfer to need 150 minutes. Convert again after 3 water chestnut of Japanese hard alloy milling cutter, although use,go up excel of each respect function is former, but still put in the accumulation that cut bits the problem inside the chamfer that hold bit, when be being machined automatically on machining center, occurrence collapse blade, even cutting tool breaks off. Because every are in the charge of cutting tool 1000 yuan or so, finished cost is extremely high, bring great waste to the enterprise, find appropriate cutting tool very hard to replace again for a short while. The author undertakes an analysis to afore-mentioned cutting tool, discovery produces scrap to have the bit that block a platoon up not the reason of free is the chamfer that hold bit lesser. So, whether does in the broaden on original basis width of the chamfer that hold bit reach figure? If change cutting tool to hold bits chamfer width and issue of a few angle according to afore-mentioned idea can the word of be readily solved, then this method is worth to try. Author immediately throws the job, adjust tool grinding machine, blade grinds the chamfer that hold bit, in the broaden on original basis 10% , and make groovy circular arc as far as possible pliable, bits of more advantageous platoon. The horn before the job of milling cutter increases 25 ° left and right sides, make milling more light, but take a value to should not be too big, lest weaken tooth intensity. Experiment through cutting deep 10mm cutting to workpiece, cutting is very smooth, whole treatment process is without the conglutinate that cut bits on milling cutter tooth, when treatment is used 20 minutes. But the requirement deepness of workpiece is 20mm, press groovy treatment, deepness does not exceed in part of milling cutter diameter commonly, whether does immediate treatment need deepness to place? The 12mm milling cutter that home produces mostly blade grows to be controlled in 25mm, whether bear full knife milling, will be test. With 10# cutting oil undertakes high pressure cools when treatment, milling deepness achieves 20mm, be machined and achieve expect the result, and 50 minutes are less than when using, make machine speed to raise one times on original basis, pass improvement milling cutter 2 times, no matter be in cutting condition respect, or on feed deepness excel imports cutting tool. Cutting tool charge is 15 yuan only, the 1/30 that is entrance cutting tool (conservative estimation, entrance cutting tool is common 500~1000 or so yuan) , and saved change a knife to assist time, machine integrated benefit to be being shown. With the entrance cutting tool photograph is compared, homebred cutting tool is nonexistent on material too big question, should fluctuate in geometrical angle and grinding only a few time, can rival completely with entrance cutting tool, import cutting tool more than even. Use common cutting tool to replace entrance cutting tool through be being improved 2 times, treatment speed relatively entrance cutting tool raised nearly one times, year managing tool charge amounts to ten yuan. The improvement of milling cutter of keyway of common high-speed steel keyway treatment is very simple in metallic treatment, but milling cutter diameter is bigger, the resistance that cuts to run the drilling tool into the well is greater. For this, the author according to group the principle knife that plunge grinds milling cutter to carry ministry cutting sword, two point wear a certain number of alternant dentate chamfer that divide bits, undertake on machining center perpendicular auger cut treatment blind hole, the effect is very ideal, go up in former two cutting blade virtually is much went out a certain number of auxiliary cutting blade, relatively the coefficient of friction that the earth reduces cutting tool and workpiece and cutting obstruction, scrap appearance by foregoing piece state transition is banding break bits, below same rotate speed condition, feed is 3 times former. Current, the function of homebred cutting tool already was close to entrance cutting tool more and more, price of some sex of homebred cutting tool import cutting tool than returning excel even. My factory passes a large number of use of pair of homebred cutting tool, manufacturing cost drops considerably. To get used to new era need, need beard and hair exhibits advanced production technology, promote innovation of science and technology with advanced production technology, the whole that increases a business designs level and ability of product research and development, reduce cost of research and development, raise the production technology level of the technical innovation ability of the enterprise and our country. CNC Milling CNC Machining