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introduction：Overcurrent relay Overcurrent relays are divided into induction electromagnetic and integrated circuit types，With a definite time limit、Characteristic of inverse time limit，Applied to motors、Transformer and other main equipment and transmission and distribution system in the relay protection circuit。When the main equipment or the transmission and distribution system is overloaded or short-circuit fault，The relay can reliably operate or send a signal according to a predetermined time limit，Cut off the fault，Ensure the safety of main equipment and transmission and distribution system。The following Feng Ye Xiaobian will take you to understand how it works。
2018-06-20 Reading quantity 232
introduction：HUROThe car fuse Talking about cars must be no stranger to everyone，A means of daily travel，One part of the car that keeps us safe is the car fuse。There are many electrical devices in the car circuit that are connected by wires of different colors，One of them should not be ignored is the fuse。Fuse is the customary term，The national standard is called fuse。The function of a fuse is to protect the circuit（line）And electrical equipment。
2018-06-20 Reading quantity 512
introduction：Bearing life parameter Under a certain load，bearingThe number of revolutions or hours experienced before a pitting eclipse occurs，Called bearing life。 Life of rolling bearing in revolutions（Or the number of working hours at a given speed）definition：Bearings within this life，Initial fatigue damage shall occur on any of its bearing rings or rolling elements（Exfoliation or defect）。However, whether in laboratory tests or in practical use，Can be clearly seen，The appearance of the same bearing under the same working conditions，Actual lifespans vary greatly。In addition, there are several different definitions of bearings“Life span”，One of them is called“Working life”，It indicates that the actual life that a bearing can achieve before it is damaged is caused by wear、The damage is usually not caused by fatigue，But by wear and tear、corrosion、Seal damage and other causes。
2018-06-19 Reading quantity 405
introduction：Stepper motorIt is an open-loop control motor that converts the electrical pulse signal into angular displacement or linear displacement，It is the main executive element in modern digital program control system，Extremely widely used。。In the case of non-overload，Speed of motor、The position of the stop depends only on the frequency and number of pulses of the pulse signal，It is not affected by changes in load，When the stepper driver receives a pulse signal，It drives the stepper motor to rotate a fixed Angle in the set direction，call“Step Angle”，Its rotation is carried out step by step at a fixed Angle。The amount of angular displacement can be controlled by controlling the number of pulses，So as to achieve the purpose of accurate positioning；At the same time, the speed and acceleration of the motor can be controlled by controlling the pulse frequency，Thus to achieve the purpose of speed regulation。
2018-06-19 Reading quantity 281
introduction：Diagram of working principle of rodless cylinder Rodless cylinder refers to the use of pistons directly or indirectly connected to the external actuator，And make it follow the piston to achieve reciprocating movement of the cylinder。The big advantage of this type of cylinder is that it saves installation space，Divided into magnetic couple rodless cylinder（Magnetic cylinder）With mechanical rodless cylinders。Rodless cylinders are traditional automation parts used in a wide range of industries，Many people do not know how it works below Feng Ye Xiaobian will take you to understand its working principle diagram。
2018-06-19 Reading quantity 1422
introduction：nachiRadial ball bearing type nachiThe radial ball bearing is a universal design，Able to withstand loads of different sizes in high-speed motion。This type of rolling bearing is composed of a complete set of precision ball and cage and an inner and outer ring。The standard radial ball bearing has a deep groove structure,It can withstand radial loads and small axial loads from any upward direction.Radial ball bearings with large load capacity mainly bear radial loads。This type of rolling bearing is available in a variety of sizes。The following is only givennachiMaintenance of radial ball bearings，If you want to knownachiRadial ball bearing model You can visit the home page of our website Fengye Mall，Hope to help you
2018-06-19 Reading quantity 593
introduction：cpcLinear slide maintenance
2018-06-16 Reading quantity 363
introduction：Screw structure Lead screw is a transmission element commonly used in tool machinery and precision machinery，Its main function is to convert rotational motion into linear motion，Or convert torque into axial repeated force，High precision at the same time、Reversibility and rate characteristics。Because it has very little friction resistance，Ball screws are widely used in various industrial equipment and precision instruments。I believe many people do not know its structure，The following Feng Ye Xiaobian will take you to understand the structure of the screw。
2018-06-16 Reading quantity 347
introduction：fagCylindrical roller bearings The rolling element is the centripetal rolling bearing of a cylindrical roller。The internal structure of cylindrical roller bearings is arranged in parallel with rollers，A spacer or spacer block is arranged between the rollers，It can prevent the tilt of rollers or friction between rollers，The increase of rotational torque is effectively prevented。
2018-06-16 Reading quantity 1189
introduction：Rolling mill bearing，Means used in the rolling industry，Non-ferrous metals、Ferrous metal and non-metallic products rolled。Used for bearing on roller diameter and roller。Four row cylindrical roller bearings are usually used to bear radial loads，Thrust roller or thrust ball bearings and radial angular contact balls or radial roller bearings bear axial loads。Now most of the oil and gas lubrication or oil mist lubrication and grease lubrication and cooling。 principle： Rolling mill oil film bearing technology，Its a systems engineering technique，meanwhile，It is also a multidisciplinary field of integrated engineering technology，The speed of its development and the supporting capabilities formed by it，from One aspect reflects the speed and level of industrial development in China。This is from the running technology、 Manufacturing technology、Test technique、Theoretical research、Product development、This paper briefly discusses several main aspects such as complete set of capabilities。
2018-06-15 Reading quantity 425
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