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introduction： 1.Precision plastic 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。] Precision plastic bearing，Compared with traditional plastic bearings, the precision and tolerance are improved。The inner and outer rings are made of materials suitable for precision machining， Rolling element and cage，On the basis of maintaining the traditional advantages of plastic bearings，Can be used in precision and high speed
2014-12-30 Reading quantity 1474
introduction： 1. High and low grade CNC equipment collocation Because the price of CNC equipment is relatively expensive，Enterprises can according to their actual situation，In the early application of CNC machining technology，Choose to transform the numerical control equipment for technical application investment，After obtaining certain application experience。Then according to the processing characteristics of the product，As material、type、precision、batch、Cycle requirement，Suitable high - grade CNC equipment。 2. Acceptance of equipment The compensation accuracy of many CNC machine tools has a large error in the case of high-speed machining，Or the Lord.
2014-12-30 Reading quantity 2920
introduction： The wheel bearings of the car[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。]Make noise，This seemingly impossible glitch actually exists，Lets discuss it together。 Fault phenomenon：When one of the four wheel bearings of the vehicle is damaged，The car is moving and you hear a constant hum inside the car
2014-12-30 Reading quantity 1588
introduction： 451 GB/T 5282-1985 Slotted pan head tapping screw Slotted pan head tapping screws 452 GB/T 5283-1985 Slotted countersunk head tapping screw Slotted countersunk head tapping screws 453 GB/T 5284-1985 Slotted semi-countersunk head tapping screw Slotted raised countersunk head tapp
2014-12-30 Reading quantity 2900
introduction：（1）Axial clearance Axial adjustment is to achieve a certain 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。]Clearance or preload capacity，Tapered roller bearings can be adjusted to maximize their performance when assembled。Such asT1MKENThe relationship curve between bearing fatigue life and axial clearance provided by the company（See picture1），Tapered roller shaft
2014-12-30 Reading quantity 1572
introduction：Look at the size of the volume of the oil tin Low cost oil products，Careful observation will find that the volume is smaller than the normal oil tin，The size and the distance between the slices are smaller than that of normal oil，They belong to the small oil Ting，Compared with normal oil tin，The quality is self-evident。The volume of Jia Xing Oil Ting is5.2l，Hotter than small oil ting26％。 Two look at the internal connection of the oil ting At present, there are plastic wires inside the oil tin on the market、Silicone rubber wire and aviation wire three kinds。Plastic wire worst，Not resistant to high temperature and easy to age，Easy short circuit poses danger，Preferably an aerial wire。Shanghai Jiaxing electric heating
2014-12-30 Reading quantity 2836
introduction：On the one hand depends on its quality，The other part depends on the stretching conditions （one）The effect of reduction rate During the stretching process，；The drawing die exerts pressure on the wire，When the metal wire deforms, a counterpressure is generated on the wall of the drawing die。The greater the reduction rate used in stretching，The more pressure the hole wall exerts on the wire，The reaction force generated by the metal wire on the hole wall is also enhanced，This force is greater than the tensile capacity of the mold itself，Then the die will crack。 （two）Lubricant effect During the stretching process，The quality of lubricant and sufficient supply of lubricant affect the service life of wire drawing die
2014-12-30 Reading quantity 1580
introduction：What is the difference between different electric forklifts 1、Power use；The commonly used power supply is power frequency transformer（Iron core，50Hz）The linear power supply and the use of high-frequency transformers（Magnetic core，Thousands ofHz）The switching power supply two categories。 The principle of switching power supply is：Put the power frequency first（50Hz）The alternating current is converted to high frequency current，Then through the high-frequency transformer into low voltage after the rectifier output low voltage DC。Because the volume of the high-frequency transformer with the same power is much smaller than the power frequency----The higher the frequency，Smaller size，So you can do a lot of power、Small size、Light weight，Thus be
2014-12-30 Reading quantity 2939
introduction：The oil seal acts as a seal、peculiarity、Structure type、The working state and sealing mechanism can be divided into many forms and different names。Oil seals are classified according to the rotating linear speed of the shaft，Oil seals can be divided into low speed oil seals（Less than6m/s）And high speed oil seal（Greater than6m/s）。Classified according to the pressure that the oil seal can withstand，Can be divided into normal pressure type oil seal and pressure resistant type（Greater than0.05Mpa）Oil seal。Classification according to the structure and sealing principle of the oil seal，Can be divided into standard type oil seal and power return type oil seal。In addition，Classified according to the material that constitutes the oil seal component，It can also be divided into skeleton type oil seal and skeleton type oil seal；With spring type oil seal and no bullets
2014-12-30 Reading quantity 1535
introduction：carburizing Carburizing is the process by which carbon atoms penetrate into the surface layer of steel。It is also so that the workpiece of low carbon steel has a surface layer of high carbon steel，After quenching and low temperature tempering，The surface layer of the workpiece has high hardness and wear resistance，The central part of the workpiece still maintains the toughness and plasticity of low carbon steel。 The material of carburizing workpiece is generally low carbon steel or low carbon alloy steel(Carbon content is less than0.25％)。post-carburizing﹐The chemical composition of the surface of the steel can be close to high carbon steel。The workpiece is also quenched after carburizing﹐To obtain a high surface hardness﹑High wear resistance and fatigue strength﹐And keep the heart has the strength and toughness of low carbon steel after quenching
2014-12-30 Reading quantity 1509
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