Drum gear coupling dimensional error and acceptance knowledge

　　The installation and acceptance conditions of the drum gear joint acceptance shaft device need to be explained that the shrinkage of the equipment in winter should also be considered when installing in summer. This is especially important for northern regions.Generally speaking, the environmental temperature difference between winter and summer in the cold northern area can reach 80°C. If a shaft with a length of 3m is installed in summer, the large shrinkage in winter (when shutting down) can be close to 3mm.The non-rotating seat ring often adopts a fit with a small gap or a small interference. The positioning hole sleeves are uniformly distributed on the circumference of the polygonal ring sleeve. The structure of the polygonal ring sleeve and the metal positioning hole sleeve are combined by nylon thread wound and integrally molded and vulcanized It is formed as a whole, the inner surface of the positioning hole sleeve is smooth, and the outer surface is spiral.
　　The dimensional accuracy error process and technical conditions of the drum gear coupling are carried out.Generally, check the shape size first, such as the shape, hole, shaft diameter, and then check the positioning size, such as edge distance, center distance, etc.When inspecting parts with complex shapes and various sizes, a table should be drawn before the inspection, and the shape size should be listed in the table first, and then the positioning size should be listed in the table, and then measure according to the order of the table, and write the measurement results In the actual measured size column, so that the size will not be missed, and the inspection quality can be guaranteed.When measuring form and position errors, pay attention to the measurement datum, and pay attention to the elements marked with the principle of tolerance and the principle of large entity.For the elements that are not marked with geometric tolerances on the paper, the inspectors can find the tolerance values ​​and measure them according to the national or enterprise standards as needed.Such as the coaxiality, circular runout of the coupling, the symmetry of the keyway, the position of the hole and so on.The torque is proportional to the excitation current in a commensurate and wide range, which can improve and simplify the control of the transmission torque, and can be used as a linear adjustment element.It has constant torque, and its static torque is the same as understanding torque.The torque that can be transmitted in the case of irrelevant slip, no impact, vibration, no noise, balanced operation, and can be used in occasions with higher operating frequencies.The power consumption is low, the control power is small, the residual torque when the excitation is disconnected is small, the disconnection function is good, and there is no fever when idling; the torque is not chaotic and the function is good, and it can be used for control.The coupling is simple in structure, small in size and low in quality. The magnetic powder is dry without oil and easy to maintain. The magnetic powder has oxidation resistance, good heat resistance, long life and high reliability.If the driven part is fixed, the torque becomes the braking torque for the rolling part, which can become a magnetic powder brake or a magnetic powder loader.The transmission shaft is an important part of the transmission system for power transmission.The end connection of the transmission shaft has various forms and has different characteristics. Whether its design and selection are appropriate affects the reliable transmission of power.Therefore, the reasonable choice of the end form of the drive shaft is an important aspect to be considered in the design.