Produce the designed circuit board, then paste all the driver ICs, prepare all the corresponding LEDs, and then prepare to start the assembly line to start the operation. The AI vertical machine starts to insert the lights, the DIP starts, and all the LEDs Knit the tape, then put it in the Universal vertical machine, start to insert the LED directly, according to the set procedure, insert the entire LED board. Highway Led Display,Toll Station Led Display,Led Display Board,Digital Display Board Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com
Deep groove ball bearings cannot bear heavy axial loads, so angular contact ball bearings (also known as thrust bearings) are mainly used as positioning bearings in vertical three-phase asynchronous motors. It requires high axial load carrying capacity and speed performance. Today, the editor of Dalan Motor takes everyone to know it.
1. Classification and application of angular contact ball bearings:
Angular contact ball bearings have 7000C type (∠= 15 °), 7000AC type (∠= 25 °) and 7000B (∠= 40 °). Generally, the inner and outer rings of this type of bearing cannot be separated, and they can withstand combined radial and axial loads and axial loads in one direction. The ability to withstand axial loads is determined by the contact angle. The greater the contact angle, the higher the ability to withstand axial loads. This type of bearing can limit the axial displacement of the shaft or housing in one direction.
Single row angular contact ball bearings are mainly used in machine tool spindles, high-frequency motors, gas turbines, centrifugal separators, small car front wheels, differential pinion shafts, booster pumps, drilling platforms, food machinery, indexing heads, repair welding Machines, low-noise cooling towers, electromechanical equipment, coating equipment, machine tool slot plates, arc welding machines and other equipment. The bearings commonly used in vertical motors are single-row angular contact ball bearings.
2. Single-row angular contact ball bearings for vertical motors:
The bearings installed by vertical motors are related to the power and center height of the motor itself. Vertical motors of H280 and below generally use deep groove ball bearings, and H315 and above motors use angular contact bearings. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase.
When using angular contact ball bearings for vertical motors, angular contact ball bearings are generally installed at the non-shaft extension end to ensure that the shaft extension end bearing bears the radial force requirements. However, angular contact ball bearings are installed with strict directional requirements, to ensure that the bearing can withstand the axial force in the downward direction, which is consistent with the direction of the rotor's gravity.
Simply put, if the angular contact ball bearing is above, make sure that the bearing "hangs" the rotor; if the angular contact ball bearing is below, make sure that the bearing can "support" the rotor. However, under the premise of meeting the above functional requirements, the assembly processability of the end cover must also be considered, that is, the external force when the end cover is assembled is consistent with the axial force that the bearing can bear (the shaft that the inner ring and the outer ring of the angular contact ball bearing can withstand) The direction of the force is opposite), otherwise the bearing will be pushed away.
According to the above rules, when the vertical motor shaft is extended upward, the angular contact bearing is installed at the non-axial extension end, which satisfies the axial force, and also ensures the assembly process of the end cover; when the vertical motor shaft extends downward Also, the angular contact bearing is installed at the non-shaft extension end, but the end cover must be assembled with appropriate measures to ensure that the bearing is not damaged.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
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After all the completed P16 full-color display modules have passed the company's quality management inspection, and there are no problems, the product is put into wave soldering, and then all the LED pin tubes are completely soldered. The environmental protection is used. Lead tin.
All the soldered full-color display modules begin to work on the assembly line. All accessories, such as the angle of the signal line of the line driver, and various power sockets, and the entire light board, if there are any, crooked The oblique LED lamp bead will right and level the LED lamp bead for comprehensive inspection.
The color of the lamp beads of the P16 module can be customized. The module can be used in a single module or in a combination of multiple modules. When multiple modules are used in combination, the positive pole of the power cord between the two modules is connected to the positive pole (red ), the negative pole is connected to the negative pole (black); the signal is connected through the signal line.