Miniature mould

The end panel milling cutter of 3 Mm and diameter 0.

The end panel milling cutter of 5 Mm takes the kind that distinction serves. And another job shops thinks this is two kinds of footy small-sized cutting tool. However the die manufacturer to world-class technology company, think among them a kind of cutting tool is the cutting tool that belongs to finish machining, and another kind is the cutting tool that belongs to rough machining. Diameter 0.

The volume of 3 Mm cutting tool is very minor, agree with only light-duty cutting and sophisticated details treatment, and the diameter is in at least 0.

The cutting tool of 5 Mm above, ability enough agrees with the rough machining production of the workshop, can process the tool steel that obtains 60 Rc through heat treatment, hardness even. Graph the special vertical machining center that 1 this job shops used a kind to small-sized mould is machined and be designed technically for high accuracy. The journey on the machine tool does not exceed 12 In, how does machine tool interior change of workpiece device, allowing a series of this small-sized spare partses to discharge growing team to undertake machining world-class technology company by order is a metal manufacturer of the model that note model. Place of manager of production of mould of no less than Mr John Ashton explains in that way, with plastic photograph of the model that note model is compared, the treatment precision demand of body of the plastic calligraphy or painting model that note model is very high, and the metal notes model model to need more the small-sized cutting cutting tool of high accuracy. He says, the metal notes model model to be able to form bigger flash liability, accordingly, MIM metal notes the closes the face needs tall nicety treatment of model model. The scale that another element that needs a consideration is MIM spare parts is lesser. Be in world-class technology company, its main finished product is abnormal tine correct standard, especially abnormal tine metal is correctional bracket. These metallic bracket note model model production to make through MIM metal, its model core and model antrum plug-in unit is machined by this mould workshop. Mr Ashton says, this part that mentions finally is particularly important. Hold a workshop inside specialization level and mould productivity can let job shops introduce new products plan, make its move toward the market quickly. Although such, the mould workmanship of this mould workshop did not achieve this one goal all the time in the past. In the past, this job shops tries to be on its common vertical machining center all the time, its treatment precision maintains in ± 0.

In the scope of tolerancepublic errand size of 0002 In. In fact, this workshop goes all lengths, take all sorts of step, before including to be machined in formal cutting among them, move the machine tool 2h, make the temperature of the machine tool achieves stable result beforehand. Although took such a few step, still need to often consider to adopt relevant other measure, use manual grinding method inside the workshop for example, make the spare parts of treatment achieves norms requirement. Later, this job shops the machine tool manufacturer from Germany, a machining center was introduced over there company of Kern Micro-und Feinwerktechnik, be machined for miniature and this equipment basically is designed technically, after introducing this machine tool, ability had the craft level of this job shops to rise further. Its " micron " the treatment precision of class is shown on the journey of the machine tool instantly come. The volume of vertical machining center is minor, the journey of axis of the XYZ on the machine tool is 12 × respectively 11 × 10 In. A workpiece is included to change in the odd cubage of the machine tool system, this one system can make a machine tool flexible like treatment unit is operated in that way move, let tiny spare parts rank press order treatment. The others of machine tool cubage includes the interior of the machine tool to design a part, the stability that can make machine precision maintains in ± in the public errand of 2 μ M. Now, on the foundation of same stability, can make world-class technology company is used 0.

The cutting tool of 5 Mm undertakes to horniness rolled steel thick cutting is machined, and after having precision work to the mould, need manual grinding no longer. Graph the 2 spare partses below (with coin) had passed heat treatment, have all sorts of treatment again next, undertake below the hardness condition of 60 Rc milling is machined for example. The spare parts of right is the standing trustee that influence Mr Burkhard Rother that in the material before heat treatment weaker condition issues the vibration that undertakes rough machining and temperature is manufactory of this machine tool. The certain characteristic that he describes can let Kern company machine tool use miniature effectively milling and auger cut cutting tool. He says, its successful part reason should be attributed to large quantities of quantities to produce. An appropriative was used on the machine tool that is 3t in gross weight polymeric concrete structural member. This one structural member not only have very good vibration isolation property (he says, the structural member that function of its vibration isolation wants to compare common machine tool is powerful 800% ) , and its also should be compared to the reaction of temperature cast-iron or rolled steel is more slow. In the design of this machine tool, x axis and Y axis are united in wedlock together with the workbench of the machine tool, only Z axis is detached. Accordingly, although the itself weight of the machine tool is very great, but the shift of Z axis needs 30kgf(1kgf=9 only.

8N) , the weight appreciably that compares main shaft only is a few taller. Graph the treatment production that 3 this machine tools also use at EDM electrode still has a few otherer characteristic and main shaft are concerned. The diameter as cutting tool is smaller and smaller, accordingly radial and jumpy public errand should be controlled accurately more. Mr Rother says, the main shaft of Kern company machine tool is designed, its radial beats the error is less than 1 μ M. The main shaft of this machine tool still includes the following characteristic: (Because 1) dimension compensation heats up metabolic result, not only the Z length on main shaft can vary, and the fixed position of X axis and Y axis also can produce change. Machine tool manufactory changes to three-dimensional dimension according to its regular research and every characteristic of the machine tool, founded algorithm of a compensation technically. In addition, besides be compensated alone by law of this one party, main shaft still uses the method with cooling water, make its temperature maintains in ± 0.

In the limits of 25 ℃ ; (2) vector control controls systematic itself to be able to identify the accurate angle position of main shaft. When the cutting tool that should be installed in knife library returns knife library, always be according to perch of their former direction of same point of view. This checks bougie to contact and character is particularly important, because bougie always is,can approach a part according to its original same way. Partial reason profit from this one effect, the applicable of some model bougie that offers by Kern company undertakes metrical on this one machine tool, its measure precision to be able to reach the level of ± 400nm. The machine tool that the place of company of technology of milling treatment world-class of horniness material or weak qualitative data has uses 5 axes linkage to control (in there are two runner shafts coming back under workpiece) , rotate speed of its main shaft is as high as 50000r/min. Manufacturing engineer Mr Juergen Bathen of this company and machinist Mr Randy Gillepsie had exploratory study to this machine tool, see its can do some of what work for the company after all, how to use this machine tool effectively. This machine tool besides can immediate treatment core and model beyond antrum, return the electrode that can be used at producing EDM, so that machine the deeper recess in the mould or the in-house corner that achieve hard. Be machined with copper and these electrode are become. Graph 4 measuring the treatment to small-sized spare parts is very crucial. In knife library, store by bougie is one kind is used at desired result the tool of another measurement unit, the blame contact of the machine tool is OK to knife device mould be before heat treatment or undertake thick milling is machined after heat treatment. The square rule that whether adopts hard milling treatment depends on different workpiece, often need to seek advice through the phone, ability makes final judgement. To the process capability of this one machine tool, use inferior the cutting tool of millimeter class undertakes hard milling is machined is without doubt, its problem is to depend on producing cost. Use hard milling to machine a method to meet those who quicken cutting tool wear away, and the price of miniature cutting tool is very high. Opposite for, need uses the pattern that a large number of cutting tool have cutting is machined, because its have complex characteristic, be willing to use the method that soft milling machines commonly, this basically is to make cutting tool can the rate that chronically carries sharp. Mr Bathen says, this also is not the intent of job shops, the hope turns this machine tool into a kind of all-purpose tool. Job shops can carry out all works that it can complete on other machining center, can be even on the machine tool with not quite tall precision, the preliminary sex that completes work for Kern company works. And, still can be in contain 24 worker worker on unit of automatic workpiece trade, make very easily a series of mould and electrode rank, undertake machining production continuously by order. In addition, this job shops still discovered the new use of this one machine tool, among them one of fast production that are prototype of new support model. Accordingly, increasing ceaselessly to the demand of this one machine tool, but also brought a new bottleneck issue to job shops at the same time -- namely process designing ability is restricted. Graph the workshop of in-house cutting tool of company of 5 world-class technology shortened a lot of moulds make the time that to the metal place of mould of consign of equipment of figuration of the model that note model needs the workshop is familiar with problem of this one bottleneck. For love or money, always machine tool can with enough rapid rate, when working more quickly in order to compare the rate that cutting tool method can offer, can become an acerb and outstanding issue to the demand of process designing so. Mr Bathen says, without what the challenge that place of world-class technology company faces is different, actually small-sized spare parts makes the problem becomes more severe. To so small part, it is very rapid that its machine accrual, however process designing often compares difficulty. The direction of cutting tool method must choose meticulously, lest the burr of casual generation affects the tolerancepublic errand measure of small-sized spare parts. Mr Bathen and the main problem that Mr Gillepsie faces are, the arrival that the machine tool of Kern company needs to often awaiting a process it seems that (job shops need solves this one problem as soon as possible) . Those who have some kind of acid interest is, small-sized mould enlarged the demand to process designing personnel it seems that. CNC Milling