It has established a perfect and complete system of database in standardization and modularization, experimental test, standard information, patent document library and international access. With the help of those database, the 3D digitization, modularization and intelligent design of the products have been realized, and the intelligent optimization and innovation design platform of the door system has been developed, which greatly improved the R&D efficiency.
After many years of technological innovation and development, BST has the Elevator Door System with inward door skate outward door skate.
Main Technical Features Bst Door System,Door System Track,Multi Beam Door Sensor,Sliding Door System Suzhou Keffran Parts Co.,ltd , https://www.keffran-elevatorsmart.com
1. AC permanent magnet synchronous motor, low velocity with large torque and high transmission efficiency.
2. Professionally developed door controller with mechanical and electrical integration optimization design, to ensure the optimum closed-loop control of the velocity, position and torque. The operation curve realizes the real-time intelligent adaptive adjustment, it has strong anti-jamming capability.
3. Standard integrated door lock with simple structure and high safety.
4. Comply with the latest GB7588/XD1, EN81-20 / EN81-50 and ROHS requirements.
Finishing the mandrel of the straight bevel gear base
When the factory produces the straight-toothed bevel gears, the A and B faces (Fig. 1) are the benchmarks for processing, inspection and assembly. The internal splines have radial runout (0.08~0.15mm) requirements relative to the B surface. The mandrel is clamped and the reference faces A and B are ground. The cylindrical pin 1 (Fig. 2) of the grinding machine spindle is in an interference fit with the mandrel body 4 for rotating the mandrel. The collar 2 and the mandrel body 4 have an interference fit, which ensures the circular runout requirement of the figure. The taper sleeve 5 is removed when the workpiece is mounted, and the taper sleeve 5 and the mandrel body 4 have a matching clearance as shown and a 60° taper jump requirement. The steel ball 3 and the clamp ring 2 can be coupled in various ways, but it is necessary to ensure that the steel ball 3 can flexibly rotate. Generally, three steel balls having a diameter difference of not more than 0.002 mm are generally selected, and the steel balls are adhered to the clamp ring 2 with butter.