Efficient treatment: Raise the sharp weapon of competition ability

80 thousand yuan of RMBs / person, and the manufacturer of hard alloy tool of a of home similar dimensions makes an appointment with 40 thousand yuan of RMBs only / person, domestic and international photograph is compared for 33 times; The labor productivity that cobalt leads the whole world makes an appointment with amount to to make an appointment with 1.47 million yuan of RMB / person, and the trader of production of high-speed steel twist drill with a top output of domestic is made an appointment with only 17.

780 thousand yuan of RMBs / person, domestic and international photograph is compared also be 8.

3 times. Can foreknow, labor rate is low will become obstacle the bottleneck that we increase competitive capacity. A our labor productivity is low main reason, a few enterprises that are us lack proper understanding and enough power to improving labor productivity. They often think our nation population is numerous, labour force price is low the advantage that is us. But if anatomize, we can see the implicit price of our labour force is lower, but the efficiency as a result of labor sometimes extremely low, often apportion arrives single product especially the cost of the product of high additional cost is not low. Accordingly, we often see us a few products are in only labour force just has narrow vivosphere in concentrated industry. The crop of numerical control machine tool of our country is occupied only in the total output in metallic cutting machine tool 10.

7% , and Japan is occupied 59.

4% . Improve treatment efficiency, realize efficient treatment, I think the competition ability to increasing a business has huge help. Machine efficiency through rising, we can reduce production cost because of this, increase thereby those who be oneself is profit, new taste development bankroll support, for partner more gain, it is service, OK also to attract first-class staff to be an enterprise contribute more for the society, if increase obtain employment chance, raise revenue, participate in social commonweal activity morely, answer a newspaper office to meet thereby; Machine efficiency through rising, we still can shorten production cycle, come true to be made quickly thereby, the client that is oneself creates value, can become a client to supply the calculable link in catenary, and accelerate capital have enough to meet need, reduce financial cost. So, improve treatment efficiency, realize efficient treatment, can we try to come true through those ways? It is OK that I think we are main be led through treatment effect heightening inside cutting time and decrease be not handling time two old ways try to come true. One, improve cutting efficiency well-known, cutting machines itself to have 3 gist element: Deepness of rate of cutting speed, feed, cutting. We say to improve cutting efficiency, pledge actually even if raise metallic excision to lead, basically should come true from this tripartite face and its interact. Raising cutting speed to raise cutting rate is to raise a when increase cutting efficiency very efficient way. 100 years since, through the ceaseless effort of cutting expert, material passed mainstream cutting tool to wait for a few phase from cutting tool of high-carbon steel, high-speed steel, hard alloy, coating hard alloy, cutting efficiency got huge rises. The steel with 1m of 65mm of a diameter, length turning is exemple, cost 100 minutes about 100 years before, and present mainstream treatment method needs 1 minute only about. Because add what work efficiency leads to mention, the person that the metal processes trade also was obtained reach its considerable economic benefits. The author had undertaken the craft of bore of flange of a valve improve with client of a valve 1997. This valve client uses high-speed steel twist drill for a long time to machine the snail keyhole on this flange formerly, treatment efficiency has become his to produce the bottleneck that can rise. But they are efficient to using but Lv of impeach of dislocation broach heart, because but the high-speed steel bit that the price of dislocation broach cutter hub is using than them is more than 10 times taller, of broach of besides high-speed steel but blade wears a number many, use but the economy of dislocation broach not quite ideal perhaps. The author and they undertook together a series of experiment and analysis, as a result of,make clear finally of cutting efficiency rise, treatment man-hour decreases greatly, share drops greatly in the cost on every workpiece, cost cost also has the pass the time in a leisurely way of cutting tool decrease, because this managing finished cost pays with respect to enough,purchase on their weekday but the fee that place of dislocation broach cutter hub needs. The development of hard alloy base material and coating technology, machine efficiency to rise, reduced production cost to offer a technology to ensure. Kennajin belongs to an offerred data to make clear, in cutting steel when use its KC9110 material will be opposite likely character treatment efficiency is extremely helpful: The film total ply that lukewarm CVD and common CVD comprise KC9110 in that achieves 24µm, can raise cutting rate substantially thereby; The hard alloy base material that cobalt strengthens undertook buildup to cutting tool tenacity again, raised feed rate thereby: The treatment that is in American some enterprise is effective in, because the synchronism of cutting speed and feed speed rises, the treatment charge of this working procedure by nearly 3 original.

Acute of 70 thousand dollar decreases inadequacy 0.

90 thousand dollar, drop extent exceeds 75% . Must point out, inside groovy cutting speed limits, raise cutting speed to mean what cutting tool uses up to increase normally. If other condition does not make change, raise the cutting speed of 20% to may mean cutting tool to use up charge to be able to increase about 50% . But the 2% ～ that hold finished cost only normally as a result of cutting tool charge 4% , the addition of this cost is extremely finite to influence of totle drilling cost. But rise as a result of what machine efficiency, the machine tool cost to workpiece, workshop cost, labor cost, overhead expenses cost meets share drop, total production cost not only increase and won't increase of charge because of cutting tool, can machine efficiency instead rise and reduce. Shanteweikekeleman's data says, if our bring down the cutting tool charge of 30% , we can reduce the cost of 1% ; If we prolong the cutting tool life of 50% , we also can reduce the cost of 1% ; But if we improve the treatment efficiency of 20% , we may reduce the cost of 15% . Raise feed we see above rate, raise cutting speed to be able to improve treatment efficiency, can reduce production cost, but the cost of itself of its cutting tool raises many. So, whether to exist to be able to improve treatment efficiency already, can reducing production totle drilling cost again while, where is the cost that also reduces cutting tool itself? One of our tentative answers are to use technology of the blade that repair light to undertake big feed is machined. The big feed of milling has existed for a long time, and the big feed of turning type is in last few years a kind of when those tool suppliers with the banner technology on international are popularizing energetically new-style technology. This kind of technology is called generally " Wiper " technology, use the numerical value that workpiece surface surface roughness reduces substantially below the requirement that this kind of technology is keeping original production metre, improve exterior quality; Also can fall to reduce handling time greatly in the premise that maintains original work quality, improve treatment efficiency. Graph 1 be belong to an offerred chart by Kennajin, red represents R0.

The exterior surface roughness that 8 common razor blade can achieve, blue delegate uses Wiper bit (MW chamfer form) can exterior surface roughness. Can see, if use F ＝ 0.

63 identical feed are led, common R0.

The workpiece surface surface roughness that 8 razor blade machine makes an appointment with 16m, and the workpiece surface surface roughness that Wiper razor blade machines only 2.

If 5m uses common R0.

8 razor blade should be achieved 2.

The workpiece surface surface roughness of 5m needs to reduce feed to make an appointment with F ＝ 0.

22. What carrying out on international at present is alleged " high-powered treatment " it is the typical delegate that big feed uses on milling. Many world-famous tool manufacturers provide such cutting tool. This kind of cutting tool uses small tool cutting edge angle generally to be affected in order to reduce radial cutting force to cutting tool metabolic, can use very big feed at effective treatment thereby, improve cutting efficiency. Graph 1(a) (b) pursues another when raise feed 2 commonly used methods are the cutting tool that counts through using more tooth will raise feed rate. The feed of bit leads the effect that often suffers bit ply or exterior quality ask and confine is inside certain limits, and use close tine cutting tool or the method that other more tine counts can be below the premise that does not change cutting speed and feed rate raise feed rate. Graph 2 it is cutting tool of reaming of two kinds of many tine, (A) is cutting tool of 3 tine reaming, it is adjustable to common two tine the feed rate of 50% can raise reaming cutting tool; (B) is the reaming cutting tool that Kennajin belongs to a when be used at treatment of car cylinder body to cannot adjust, its tine number is as high as 7, 350% machining efficiency is cutting tool of common two tine reaming. Cutting deep treatment to cut deep treatment to machine efficiency to rising greatly greatly is very effective likewise. Big situation is compared in mental allowance, apply cut deep treatment to be able to reduce knife number effectively greatly, raise metallic excision rate thereby. But cut greatly deep often bring big cutting power demand, this other part that we want to notice machine tool and machining complex when application whether satisfy its power requirement. In the meantime, cut deep treatment to also have particular demand to cutting tool structure greatly, be like bosseyed negative model bit wants excel double-faced negative model bit, establish outfit razor blade to want excel to lie outfit razor blade is waited a moment, specific seek advice to personnel of technology of professional cutting tool please. 2, decrease in be not handling time to make a process in our production, the proportion that the time place that cutting machines holds often is very finite. According to Chinese knife assist data, although numerical control of facilities of very full, production changes job of a few production,very tall, management also compares rate advanced large company, the cutting handling time on numerical control machine tool also does not exceed 30% . Accordingly, how to decrease be not handling time also is a when improve treatment efficiency important facet, here makes a simple narration: Reduce treatment working procedure to some of moment uses sound technology to be able to machine working procedure lesser. Be like the SE broach that Kennajin belongs to, the cylinder of bore is spent rise than common broach a lot of, reaming working procedure can be discharged in a few circumstances; Provide direct milling like die again, can reduce treatment process greatly, shorten the mould makes cycle. Reduce the time that change a knife to reduce the time that change a knife and the adjustment after changing a knife, try cut time, also can be not handling time to decreasing helpful. If common numerical control lathe is in,need to be opposite afresh knife, and use coke full Capto or agree when after the KM system of accept can assure, be being produced afresh, do not need to be opposite afresh Dao Changhe of knife, setting slants buy, can reduce the time that change a knife. Agree accept with numerical control lathe every average need changes 5 knives, worker to fall 3 classes commonly, work 5 days every week, work every year charge of 46 week, horary man-hour is a standard to have consideration for 60 dollars, the average time that change a knife needs 5 minutes, and agree the KM of accept changes knife time to need half minutes only, annual and managing charge can be achieved 15, 525 dollars. Graph 3 reduced manufacturer of tool of the frequency that change a knife to develop a few cutting tool that have a variety of functions, in order to handle different treatment need. If Yisika, hill is tall, agree the milling cutter of offerred anise razor blade such as accept, Waerte, can finish all sorts of plane, horn, circumferential interpolation, model antrum thick mill the treatment that wait; Agree the A4 lathe tool of accept and knife of Xiang Yu the Conqueror, the complex treatment job such as two-way turning, quadrate, step can be finished on lathe. Compound treatment is compound treatment is to show working procedure of will much talk centers treatment, like bore / reaming / pour wine cup / Huo is planar often by compound, bore / pour wine cup / mill whorl also has more of late compound. Graph 3 agree namely a kind of bore of accept / pour wine cup / mill whorl is compound cutting tool. The time holding clip that reduces workpiece to install clip time to place a technology to reduce workpiece through suitable costume also is to reduce a kind of kind that is not handling time. Be like a few latterer the Che Xi that machine tool manufacturer offers is compound treatment machine tool, male the offerred fast costume such as the gram places a technology, the number holding clip that can reduce workpiece effectively and outfit place time, improve treatment efficiency thereby. CNC Milling