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the main process includes three precision machining, namely, respectively is soft, hard machining and machining. Then how do we choose process? Here by us to give you specific introduction:
a, CNC precision machining order
when the mold is very big, very deep, roughing and semi-finishing with soft processing before quenching, quenching after finishing using hard processing; Small, shallow mould can be one-time milling into after quenching. If the mold wall is thin, deep cavity and, by electric machining.
if the cavity has a large, flat bottom, one-piece milling cutter is used for rough machining, after using the round nose cutter Angle, one-piece milling cutter cutting force and dispersing heat effect is very good. Round nose milling cutter in machining the part of the need to clear the root efficiency faster than flat, it is not easy to collapse edge
2, precision machining nc tool selection
CNC precision machining hardened mould, correct selection of cutter is very important. Usually, choose high rigid blade design, high temperature resistant, wear resistant coating, superhard materials production tool is preferred, zhongshan alonso precision cutting tool of high speed and high hardness H series to achieve the high speed and high hardness HRC70 under processing. Another tool rigidity is very important, in order to increase the rigidity of the small diameter cutter, the diameter of the handle do much larger than the diameter of a cutting tool, to improve the processing finish and prolong tool life; Tool clamping overhanging length should be as short as possible. Choose a new coating, on the other hand, make the cutting tool can withstand higher temperature, such as Tisin and Cygnus X coating on acidification temperature 1300 ℃, Hv3700 surface hardness, coating thickness 4 um so they are more suitable for high speed and hardened quenching mould processing
3, CNC precision machining tooling selection and tool clamping
the handle should be dynamic balance to the sintering type or select the handle, the handle should be adapted to the shape of the mould structure at the same time. Often should keep the side of the cutter and workpiece periods of half a degree, such as the side of the workpiece is 3 & deg; Cant, the shape of the handle to make 5/2, so as to obtain the maximum rigidity. If the side of the workpiece is 90 & deg; Face, then the handle thin neck structure should be adopted.
the clamping cutter is very important, this is related to the handle of the tolerance, the handle and the cutter holder, and the diameter of installed jump and other factors. To this end, the handle of the manufacturing tolerance should be 0. 0025 mm to 0. 005 mm, or applying heat shrink the clamping tool.
4, selection of precision nc machine tools and nc programming essentials
the use of good rigidity, high precision machine tool can achieve good effect. High hardness processing die cutting mould when programming tool path should use helical interpolation, the cutting process is stable. Or spiral cut from the side will not be used in occasions, oblique wave, should be adopted to avoid the axial roll. Programming also determines the size of the radial feed and cutting depth.
the main is to decide what kind of method is used according to mould, hardness, or a combination of these process, our company is specialized in manufacturing metal non-standard parts, ￠0. 5 - ￠20 mm stainless steel, titanium, aluminum etc metal precision parts manufacturing for many years precipitation technology.
our main products include: non-standard miniature components, stainless steel components, medical equipment accessories, lighting accessories, fasteners, connectors, axis of instrument fittings, bushings, fiber optic connectors, lc, sc tail handle handle accessories, precision machinery parts, fiber optic communications, screw nut, electronics accessories, copper, aluminum rivet and other civilian and military high standards of high quality high cleanliness of more than 200 varieties of products, for customers to choose from. In addition we can also according to the different requirements of customers, create customer satisfaction products.
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