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introduction：In allTIMKENbearing[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。]In case of premature failure，about16％A method caused by improper or incorrect installation。A variety of different applications may require machinery，To properly heat or hydraulic devices and effectively install linear bearings[Linear bearing:Metal linear bearing is a kind of low to
2015-02-20 Reading quantity 1445
introduction：Dry machining is one of the trends of metal cutting in the future。In recent years，Especially in industrially developed countries，Great emphasis is placed on dry cutting，To implement the environmental protection policy，More vigorously study、Development and implementation of this new processing method。The cutting fluid plays a very good role in reducing the cutting temperature in the work，It is also conducive to chip breaking and chip removal，But there are also some problems，Use of coolant、store、Cleaning and handling are very tedious，And the cost is high.。The harm of cutting fluid to the environment and the operators health has been limited by the use of cutting fluid。Processing of cutting fluid is also uneconomical，These costs are often underestimated，Because theyre contained in
2015-02-20 Reading quantity 2785
introduction：Mold repair mainly includes the remedy of manufacturing defects、Mold wear and repair of external damage。In real work，Should be tailored to different situations，Adopt the corresponding repair means。 The meaning of manufacturing defects is broad。On the macro level，The problems exposed by the mold in the process of mold testing can be classified as manufacturing defects。At this time, the solution of the problem must be fundamentally made，To re-examine the mold structure、Material selection and heat treatment、Processing means and other aspects。The preferred remedy is replacement，That is to replace the size out of whack、The material is too soft and other problem parts。If we find structural problems，We must also resolve to correct it。if
2015-02-20 Reading quantity 2780
introduction：Extrusion was a word long ago1566Its been around since about a year ago，It comes from Latin"extrudere",the"trudere"plusex。In our line of work，Extrusion is done mainly by applying pressure or pushing，polymerize The material is pushed or pressed into the extruder through an open die，Thus, products with fixed shapes are continuously produced，Such as tubular material、Thin film、sheet、Pipe etc.。This process is mainly done in the feeding screw or extruder。Screw extruders were first used in1879Used in the production of wire。Ram-type extrusion
2015-02-20 Reading quantity 2798
introduction： 1、IKObearing[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。]Identification of center ball bearings Radial ball bearings in normal technical condition，therein、The outer ring raceway should be free of peeling and serious wear marks，And in the shape of a bright circular groove；All ball bearings should remain round，spotless、Cracks and flaking；bao
2015-02-20 Reading quantity 1553
introduction： Keys are used to connect the shaft to the parts on the shaft，Perform circumferential fixing to transfer torque，cogwheel、Belt pulley、Coupling to shaft connection，Key connections can be divided into loose key connections、Key connection and spline connection three categories。 1.Loose bond connection The keys used for the loose key connection are ordinary flat keys，Half-round key、Guide flat key and slide key, etc，Transfer torque against the side of the key，Only the parts on the shaft are fixed circumferentially，Cannot withstand axial forces，If you want to fix it axially，It is necessary to attach positioning parts such as tightening set screws or positioning rings。The assembly points of the loose key connection are： 1）Clean burrs from keys and keyways，Ensure the key and keyway can be fitted accurately。
2015-02-20 Reading quantity 2795
introduction：Through reasonable distribution of mass in each moving part，A measure to eliminate or reduce vibration caused by inertial forces during mechanical operation。The problem of balance arose with the advent of rapidly rotating machinery，And with the turbine、dynamo、motor、Centrifugal pump、Compressors and gyroscopes became more and more prominent，So it is an important problem in the study of mechanical dynamics。 On a rotor that rotates around a fixed axis，The centrifugal inertia forces of each particle form a space force system,Simplify them to any point according to mechanics,A centrifugal inertia force can be obtainedFAnd an inertial couple the centrifugal inertial force and the inertial couple will
2015-02-20 Reading quantity 2795
introduction：Milling cutter，A rotary tool steel cutter mounted on a milling machine for milling forming and trimming metal faces，Its a kind of turning tool，There are many kinds of milling cutters，Be broadly divided into： 1.Flat end milling cutter，Rough milling，Remove a lot of blanks，Small area horizontal or contour finishing； 2.Ball end milling cutter，Perform surface semi-finishing and finishing milling；A knife can fine mill steep surfaces/Small chamfer of straight wall。 3.Flat end milling cutter with chamfer，Rough milling can be done to remove large quantities of blank，Also fine milling flat surface（Relative to the steepness）Small bevel。 4.Form milling cutter，Chamfering knife included，TV milling cutter
2015-02-20 Reading quantity 2794
introduction：Abstract：This paper briefly introduces the basic connotation of business process reconfiguration，This paper discusses how to introduce the technology of enterprise management process reconfiguration intoCIMSThe need to go in the project，Some key techniques are discussed in detail。Finally put forwardCIMSThe methods and steps of business process reconfiguration under the environment。 keyword：Enterprise management process reconstruction；BPR；Computer integrated manufacturing system；CIMS Since the mid-1980s，Computer integrated manufacturing techniques and systems（CIMandCIMS）Increasingly become a hot spot in manufacturing，PeoplesCIMSRegard as two
2015-02-20 Reading quantity 2892
introduction： There are many varieties of cold rolled steel sheets and strips，National standards have made corresponding provisions(See table1-4Sum table1-5)。The biggest demand is deep drawing steel plate、Coated steel plate and electrical silicon steel plate3Large variety，Their characteristics are as follows： tablel-4Varieties and specifications of cold rolled steel plates Cold-rolled steel plate varieties Thickness range／mm wide
2015-02-20 Reading quantity 1548
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