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introduction： Strip sheet metal、Pipes and profiles are bent to a certain curvature、The shape and size of the workpiece stamping process。Bending is widely used in the manufacture of high-pressure vessels、 Boiler drum、 Boiler tube、The plates and ribs of a ships hull、All kinds of utensils、Instrument components and cabinet inserts, etc。 Bending of material，The stress states of each part in the deformation zone are different。The part in the middle of the cross section that does not deform is called the neutral layer。Metals outside the neutral layer are subjected to tensile stress，Produce elongation
2015-01-08 Reading quantity 2787
introduction： precision Bearings requiring high rotational accuracy[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。]disposition(Machine tool spindle)And applied to high speed working conditions，Bearings with higher accuracy than ordinary grades should be selected。Can provide a variety of high-precision bearings，Includes single row angular contact ball bearings、Single and double row cylindrical roller bearings，There is one more
2015-01-08 Reading quantity 1551
introduction：Methods and skills of safety technical management of lifting machinery The safety management of the use unit of special equipment includes the selection and demonstration of equipment，Installation and debugging，Inspection by the special inspection authority、Development of safety management system，maintenance、Operational run、transform、overhaul、Management of the whole process such as scrapping。 1.Hoisting machinery purchase installation and inspection 1.1Type selection Enterprises in the purchase of lifting machinery，First of all, the scope of use of this enterprise、Work frequency、Utilization rate、Rated lifting weight and other factors are comprehensively considered，Select the crane suitable for the level of work required by the unit。According to the proposed technique
2015-01-08 Reading quantity 1527
introduction： １ Definition and connotation of virtual manufacturing technology Virtual reality（Ｖｉｒｔｕａｌ Ｒｅａｌｉｔｙ）Technology is the use of sensory organization simulation devices and dynamic models of real or illusory environments to generate or create an environment or reality that people can perceive，A virtual environment that enables people to intuitively act on computer-generated 3D simulation models。Virtual manufacturing based on virtual reality technology（Ｖｉｒｔｕａｌ Ｍａｎｕｆａｃｔｕｒｉｎｇ）Technology is the integration of processes such as design and manufacturing under a unified model，It integrates various processes and technologies related to product manufacturing
2015-01-08 Reading quantity 2859
introduction： CODE：00104 Device name：Radial drilling machine Type specification：Hole diameter≥100mm Unit of measurement：Taiwan （one）Geometric accuracy
2015-01-08 Reading quantity 2797
introduction： one、Structural principle： Hollow blade dryer mainly with jacketWThe shell is composed of two hollow blade shafts and a transmission device。The shaft end is equipped with a rotary joint with heat medium introduction。 The heating medium is steam，Hot water or thermal oil。The heating medium passes into the shell jacket and two hollow blade shafts，The material is heated and dried by conduction heating，Different materials hollow blade shaft structure is different。 The material is added through the feed port，Stirring in two hollow blade axes
2015-01-08 Reading quantity 2793
introduction：1The source of water in hydraulic oil and its hazards People increasingly realize that the life of hydraulic systems and components is closely related to the cleanliness of the oil。In recent years，The pollution control technology of hydraulic system has been greatly developed，Specialized research has been developed in many areas、Production and application system。For particulate pollution，Now basically more attention，Generally, corresponding measures are taken to control it。Contrasting water、air、Microbial and other pollution，There has not been as much attention paid to particulate matter pollution。After particulate matter pollution is effectively controlled，Other pollutants will become more apparent to the system。Water on hydraulic and
2015-01-08 Reading quantity 2786
introduction：Buy and use，Improper use，There will be this and that problem。We first understand that the hard tooth reducer is an essential component of the transmission products such as the screw elevator，Its stability plays an important role in the whole transmission system。However, if the hardness of the hard tooth reducer fails to meet the requirements is purchased in the purchase process，Or the use cycle is too long，Or under excessive load，It will accelerate the wear of hard face gear，Thus affecting the normal operation of the transmission system。 one：The main manifestation of failure after a long time of use： Vibration is enhanced during use，Noise increase。The main reasons for this phenomenon are：in-case
2015-01-08 Reading quantity 2879
introduction：CN：Normal group radial clearance；It is usually used only in combination with the following letters to indicate a narrow or offset gap range H：Narrow clearance range，Equivalent to the upper half of the original clearance range L：Narrow clearance range，Equivalent to the lower half of the original clearance range P：Offset clearance range，Equivalent to the composition of the upper half of the original clearance range and the lower half of the next set of clearance ranges The above letters also apply to the corresponding meanings combined with the following gap groups：C2、C3、C4、andC5，Such asC2 C2：Radial clearance is less than
2015-01-08 Reading quantity 1459
introduction：one、disassembly 1．Loosen the bearing with an Allen wrench first[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。]Lock screw on eccentric sleeve，Then insert a small iron rod into the countersink hole in the eccentric sleeve of the top cover，Loosen the eccentric sleeve against the direction of rotation of the shaft。 2．Loosen the bolt holding the bearing seat。Remove the bearing from the shaft along with the housing。note
2015-01-08 Reading quantity 1562
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