Razor blade of Swiss type turning and miniature spare parts are machined

The bone of 5mm is nailed -- the radius of circular arc of point of a knife of this razor blade almost with be machined the part is euqally large. In addition, jim Gosselin of GenSwiss company boss points out, "Certain part (if place of industry of radio frequency connector uses a part) cannot have any circular arc radius, because it can affect the electric performance of this spare parts. " you can think probably, can the cutting tool that there is radius of circular arc of point of a knife be in does cutting die when the first workpiece blade? To complete this kind of treatment, genSwiss company designed miniature but lathe tool of type of dislocation razor blade. Gosselin explanation says: "We all cutting tool are used inferior micron class hard alloy material, this means grain measure very small, because the tenacity of this cutting tool is first-rate also -- although they are had extremely the point of a knife of sharp edge acute. Because ask cutting blade is very sharp, accordingly all dimension use essence of life to grind treatment, use burr of grinding of purify of a kind of special technology next, to raise wearability, have PVD coat even subsequently. " the geometrical figure with miniature car the most important razor blade grinds the scrape blade that make on point of a knife namely probably (Xiu Guangren) . Blade of this kind of scrape is after bit the edge grinds a plane that give -- the likelihood has 1.

25mm is wide, have 1 ° or smaller hind horn. Gosselin says, "According to different workpiece material and spare parts diameter, actually, you can use radius of circular arc of this kind of point of a knife to turn with every for the cutting tool of 0 1/0 inches thousands of feed rate undertakes cutting. " you can think probably, this kind of cutting tool may die not easily blade, but can you machine the appearance that give bright and clean degree very poor? The answer is won't. Gosselin complement says, "The action of cutting blade tailing edge is the point of a knife that prop up not just, it is returned can the raised part of scrape workpiece surface, offer very good appearance thereby bright and clean degree. " Gosselin says, "Well-known, improve treatment the surface is bright and clean spent method is to increase radius of circular arc of point of a knife normally, or reduce feed rate. In groovy turning treatment, these two kinds of solutions are practical. However, to miniature turning character, to improve the appearance bright and clean spend and increasing radius of circular arc of point of a knife is a kind of wrong choice, and use the method that reduces feed rate to be met likewise go astray. " the key of the problem remains cutting blade. To realize reasonable cutting, workpiece material must have flowed from cutting blade upper part. Gosselin says, "If be opposite,bit cutting blade undertakes 0.

The preparation of 005mm (passivation) , so feed rate must is more than 0.

005mm. If incorrect cutting blade undertakes preparation, cutting tool does not have appropriate clearance, accordingly, you just are in actually elbow workpiece material, is not right its undertake cutting. " although this kind of point of a knife is called " radius of 0 circular arc " , but to prevent collapse blade, actually point of a knife or need have radius of a bit circular arc. Manufacturer of most miniature tool alleges radius of circular arc of its point of a knife is 0.

0025 - 0.

03mm. Must remember, radius of circular arc of point of a knife is bigger, the bending of workpiece is out of shape bigger also, and the dimension public errand as a result of miniature spare parts as spare parts dimension reduce and reduce, because the target of manufacturer of this miniature hardware may be,achieve + 0.

005/-0.

000mm or stricter grinding quality public errand. When spare parts of miniature of the turning on Swiss type machine tool, another when need a consideration main factor is to make lathe tool stands by oriented sleeve as far as possible. Gosselin emphasizes, "In Swiss type turning, oriented sleeve just is crucial. Speed of the norms size of the machine tool, motion or have what function to not matter. Unless you have the oriented sleeve of high quality, can make cutting tool just endures oriented sleeve closely, otherwise everything other is without a meaning. " Gosselin points out, division of seasoned technology of Swiss type turning does not like to machine small part on big machine tool. But, big machine tool is not to be able to install more cutting tool, have more high-power, can you provide bigger treatment flexible? Such perhaps, but go up in small machine tool, cutting tool is OK more stand by oriented sleeve. He says, "On the Swiss type machine tool of a 20mm, the distance of cutting tool and oriented sleeve is about 2 - 3mm, you can see, the diving board that workpiece uses than place of freestyle diving match bends badlier. " John Dotday of expert of treatment of small-sized spare parts also thinks, on Swiss type machine tool turning miniature spare parts has challenge sex extremely. He points out, the high quality energy that uses PVD coating, zero means besides need worries bit beyond, the central line of cutting tool is crucial also. "In be opposite correctly very crucial. When the member that machine a person installs cutting tool, must adjust the osculatory position of cutting tool and workpiece carefully. Have now a lot of by treatment spare parts such small, you must see its detail clear in the ability below microscope. " the pressure of the cooling fluid that monitor is crucial also. Dotday says, "The pressure of cooling system already achieved high pressure nowadays 2, 000 Psi. Below the concussion of high-pressured cooling fluid, miniature spare parts may bend be out of shape, cause vibration, this brings about spare parts quality likely to drop or discard as useless. " the good stuff semifinished product that Dotday suggests to buy a course to grind treatment involuntarily, because its have better circularity and size consistency. He says, "Any circularity errors of good stuff semifinished product can transfer work. Although grind the bar that pass to expect cost is higher (the likelihood wants expensive 50 ％ above) , but the spare parts quality that treatment gives can raise about 90 ％ . " company of Marubeni Citizen-Cincom of manufacturer of Swiss type machine tool western Glen Crews of district selling manager expresses, realize Swiss type turning to succeed, still need to buy the tool with best quality (include cutting tool, blade holder, oriented sleeve and pinchcock head) . He emphasizes, "The purchase department light that does not let you buys bargain. Such beginning that may save a few purchase cost, but with bit damaged loss can discard as useless because of do poorly done work over again, spare parts after you more money. " the size about the machine tool, crews points out, always must not use small machine tool to machine. He says, "You can go up in the machine tool of 20mm the spare parts of turning 1mm, but you must undertake be installinged correctly to the machine tool. " emphasize again, successful hang is to should make cutting tool stands by oriented sleeve as far as possible, this may mean need to revise blade holder or use knife mat. Crews says, "You must make cutting tool wants to come up against oriented sleeve almost. You may need to consider to use the oriented sleeve of front lengthen, need to undertake section adds man-hour when you especially, want those who compare lathe tool to extend a quantity to grow normally because of this kind of cutting tool 8 - 10 Mm. " when machining miniature spare parts, groovy " machining manual " do not give what help on. Crews says, "Without the rigid regulation that what must follow. Complete small treatment to succeed, can experiment repeatedly only and carry out. If feed is too slow, may cause workpiece to machine sclerosis; If feed is too fast, treatment surface is bright and clean degree worsen possibly. Every workshop invented his treatment hang. Treatment miniature spare parts already difficulty is bothered again, not too much the leeway that err. For example, the height of cutting tool must completely correct, because this is right demand of outfit knife skill is very high. Small treatment needs one a complete set of complex skill, because this does not have too much person,be willing to pursue this job. " when spare parts of miniature of Swiss type turning, you accept the reality with cutting tool briefer life possibly. Crews points out, "With treatment dimension older spare parts photograph is compared, the cutting tool life of small treatment is briefer, because radius of circular arc of its point of a knife is very small, because of this easier damaged. When machining the part with larger size, you perhaps can accept the cutting tool wear extent of thousand -- when machining miniature spare parts, this cannot be accepted. " the Gosselin explanation of GenSwiss company says, "Cutting tool can realize cutting to have two precondition: Cutting tool material is compared by cutting material harder; Bottom of blade of cutting tool cutting stays have clearance. " groovy cutting razor blade does not suit treatment of type of Switzerland of miniature spare parts to have the following reasons: (1) the cutting blade of most groovy razor blade passes preparation (also call K sometimes model pour arris) . K pour arris and radius of circular arc of point of a knife to differ, it is to bit cutting blade undertakes preparation, make the same score its slip round, the acerb burr that arises possibly in bit agglomeration or grinding process through purify, loose deposit and area of fragile be mingled with, achieve the goal of aggrandizement cutting blade. However, when turning of type of small diameter Switzerland, edge of the K on low cost cutting tool arris is too big, can bring about spare parts bending to be out of shape or cutting tool scratch (cutting of and rather than) spare parts, because,this is by the side of the K arris that pours arris (circular arc radius) the face of cutting of point of a knife that is located in bit is the following, the cutting clearance of bit is accordingly insufficient, cannot cutting of on the rails, normally expression breaks off when cutting for the spare parts or the surface appears scrape. (2) generally speaking, to the Swiss type turning of small part, the coating that is used at groovy razor blade is too thick. Although the cutting blade preparation of cutting tool is reasonable, but if besmear Fu CVD coating (normally ply is 12 - 18 μ M) , also acquire good cutting property hard. Because CVD coating is too thick, its cutting effect is similar to the low cost cutting tool that has K arris side. (3) radius of circular arc of point of a knife is too big. The interface of cutting tool and workpiece material is bigger, the cutting power that brings to bear on to its is greater also. Good as a result of tigidity of cutting tool be been inferior to by the tigidity of cutting material, accordingly workpiece is met bending concede. The vibration of workpiece and be out of shape can bring about cutting function aggravation. Compare with photograph of standard razor blade, the price of special razor blade may be more expensive -- be as high as 3 possibly even times, but you can ensure you can acquire the high quality cutting tool that has property of exceedingly good cutting, improve the cutting tool life of small treatment. These advantage should be more than the investment that increases when buying cutting tool far. CNC Milling CNC Machining