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introduction：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。]Failures are often due to a variety of factors，All design and manufacturing process factors influence andSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFGroup general manager
2015-03-05 Reading quantity 1443
introduction： Basic knowledge test one、The application range of cemented carbide is described below，Which alloy they correspond to（6points）。 1.Suitable for cast iron、Non-ferrous metals and their alloys and non-metallic materials processing，Rough turning in uneven sections and intermittent cutting。( ) 2.Suitable for carbon steel and alloy steel continuous cutting rough turning、Semi-finishing and finishing when cutting unevenly or intermittently。 （ ） 3.Suitable for cast iron、Rough turning for continuous cutting of non-ferrous metals and their alloys and non-metallic materials，Intermittent cutting time
2015-03-05 Reading quantity 2781
introduction：Fuel fuel Combustion pollution pollution from combustion Combustion intensification intensification of combustion Work hardening work hardening Reliability design reliability design Safety factor factor of safety Finite element method finite element method Surface strengthening surface strengthen
2015-03-05 Reading quantity 2903
introduction： High speed spindle bearings for machine tools[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。]Technical introduction of(Machine tool bearing)： Increasing the speed of spindle bearing is the key to realizing high speed practical spindle。With the development of high-speed，For processing machines。The rolling element is made of ceramic material，dmNBe worth at20×104around，
2015-03-05 Reading quantity 1553
introduction：The advanced nature of extrusion technology represents the development level of the plastics industry。Although there have been no breakthrough or revolutionary achievements in international plastic machinery manufacturing technology in recent years，However, it has been rapidly improving and perfecting on the basis of the original，However, Chinas plastic machinery manufacturing technology still has a certain gap compared with foreign developed countries。It is mainly manifested in the complete set of equipment capacity、The processing level and technical application of the equipment。In recent years，Chinas plastic machinery technology progress in new products、The development of new technologies has been accelerated，High starting point，The main way is through introduction、Digest and absorb foreign advanced manufacturing technology。 Take pipe equipment, for example，Last generation
2015-03-05 Reading quantity 2789
introduction： A discipline that studies the interaction between the tool and the workpiece in the process of metal cutting and their respective changing laws。In designing machine tools and tools﹑Make cutting process and quota of machine parts﹑Rational use of tools and machine tools and control of the cutting process﹐Use the research results of metal cutting principles﹐Make the machining of machine parts economical﹑Quality and rate of purpose。 Brief history The research of metal cutting principle begins19mid-century。1851years﹐FrenchmanM.Kokkira was the first to measure the torque of a drill cutting a material such as cast iron﹐Excision units are listed
2015-03-05 Reading quantity 2786
introduction：In Chinas development process，Quite a few specialists hold this view：Improve quality and technology from raw materials，Therefore, in recent years, the country has accelerated the pace of industrial raw materials development，Remarkable achievements have been made，Gm is also feeling this in the production of planetary reducer，We will promote the sustained and healthy development of the raw material industry，For accelerating industrialization in our country、Modernization is of great significance。Mainly carried out the following series of work： First, effectively transform the development model。We will promote technological innovation，We will intensify technological upgrading，Accelerate the promotion of raw material industry on the development track of innovation-driven and endogenous growth。
2015-03-05 Reading quantity 2797
introduction：1introduction With the progress of society，The development of science and technology is even more rapid，Peoples living standards have also risen。People no longer buy goods just to satisfy their necessities，There are also requirements on the packaging of goods。After China joined the WTO，Enterprises participate in the international competition is more and more intense。Intermediate enterprise、The accuracy requirements of quantitative packaging and graded packaging, which are closely related to individuals, are also increasing。Product quantitative packaging and graded packaging overweight，Will hurt the interests of enterprises，To some extent, it reduces its competitive ability；Product quantitative packaging and graded packaging short
2015-03-05 Reading quantity 2852
introduction：Generally speaking，Combination 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 heats up after it starts running，Over time，That is, at lower temperatures（Usually warmer than room temperature10~40The degree of）In the normal state。Time to normal，On the basis ofIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve mechanical design
2015-03-05 Reading quantity 1537
introduction： Rectangular splines are usually formed by milling or hobbing，After grinding spline to meet the requirements of design drawings。Milling machining is usually specially designedTV-groove milling cutter，This type of milling cutter is suitable for large-scale specialized production，But centring、Small batch non-specialized production is not suitable。To solve this problem，We tried three - edge milling cutter and blade milling cutter，Satisfactory results were obtained
2015-03-05 Reading quantity 2796
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