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Rapid prototyping（rp）Technology is an advanced manufacturing technology that has developed rapidly in recent years，It is discrete according to computer control/Pile forming principle，Use partscadGeometric information determined by the model，The lamellar material was scanned and processed in two dimensions，Get a layer of parts，And then through layer upon layer，Finally, the technology to obtain a three-dimensional entity。 In the country“863”With the support of the plan，Tsinghua University Enterprise Group Beijing Yinhua Laser Rapid Forming and mold Technology Co., LTD，inrpequipment、software、Four aspects of material and technology were studied，coexistencerpProcess integration theory and method、Multi-function fast
Product development usually involves both inside and outside the manufacturing company、Many people in multiple regions and departments。Timely involvement of all Stockholders in product engineering can help reduce lead time、Minimize changes and errors、And improve quality。Successfully assembling an extended team can turn the knowledge and innovation of each team member into capital to improve the product quality and its development process。Effective collaboration allows each function to add value simultaneously rather than sequentially。 Unigraphics NX augmentCAD, CAE, CAMAnd powerful collaborative solutions to help achieve these goals
Although hot runner mold technology in the mold manufacturing industry is more developed in Europe and the United States has decades of development and application history, However, the traditional hot and cold runner mold still occupies a large proportion. As in the United States some people estimate cold runner, The hot runner mold is 50% each. Some people say that the hot runner mold accounts for 60%, The cold runner mold accounts for 40 percent. Lets not say which number is more accurate, At least you can tell if its cold,Hot runner molds can coexist for a long time, It must have its own existence and application characteristics. However, for mold users and plastic injection molding manufacturers, One of the most basic
one、bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Raceway noise cause analysis a.noise、Vibration has randomness； b.Vibration frequency at1kHzabove； c.No matter how the speed changes，The main frequency of noise is almost constant while the sound pressure level increases with the increase of speed； d.When the radial clearance increases，
traditionISOInnovations in turning technology are just as important as high-tech alternatives Because of the many lectures、Seminars and professional publications pay considerable attention to things like turning high-hardness materials、superfinishing、Advanced technology such as dry and high speed turning，While traditionISODevelopments in turning technology seem to be stagnating。But nothing could be further from the truth。This is due to the fact that technologies such as multi-directional turning often have more dramatic productivity gains and cost reductions that can be achieved through non-traditional alternatives，But usually the starting cost is much lower。At the same time new cemented carbide material grade research
Bedroom lathes are widely used in various machinery industries，Especially in terms of numerical control，Be widely used，today，We mainly talk about the characteristics of bedroom machine tools。
one、Start and stop the conveyor should generally be started under no-load conditions。When installing several belt conveyors in succession，A starting device that can be locked should be used，In order to start and stop in a certain sequence through the central control room。besides，To prevent accidents，Each conveyor should also be equipped with a local start or stop button，You can stop either one individually。To prevent the conveyor belt from being torn lengthwise for some reason，When the conveyor length exceeds30mwhen，All along the conveyor，Should be spaced a certain distance(Such as25—30m)Install a stop button。 two、Maintenance of belt conveyor
rightSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Regular maintenance of equipment、Bearings removed during operation and replacement of peripheral parts are inspected，It is necessary to judge in turn whether this bearing part can be used again and remember
one、summarize vegetable、Fruits and flowers still rely on the consumption of leaves after harvest、In stems and fruits, life is sustained by sugars and starches in the form of carbon assimilation，Heat from respiration，Make fruit and vegetable product temperature rise；The rise of the product temperature further strengthens the respiratory action，Promote water evaporation，Microbial reproduction and oxidation are intensified，The result is discoloration，metamorphism，Lose the original flavor and nutritional value，Scientific proof，Every increase in food temperature10℃，The respiration of fruits and vegetables will more than double。Example sweet corn in27℃At normal temperature，Respiratory heat1500kcal/kg，While...-1℃At low temperature，Breath
Magnetic bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]It is a new type of bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。also
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