Teeth Belt Synchronous Toothed Belt Drive This Is A Special Belt Drive

Teeth Belt Synchronous Toothed belt drive This is a special belt drive. The working surface of the belt is formed into a toothed shape, and the surface of the rim of the pulley is also formed with a corresponding toothed belt, and the belt is driven by the main belt (Figure 2 [Synchronous Toothed belt drive

  ]). Synchronous Toothed belts are generally made of fine wire rope for the strong layer, covered with polyvinyl chloride or neoprene. The center line of the strong layer is defined as the nodal line with the length of the line length. The basic parameters of the band is the week and modulus weeks is equal to the adjacent two teeth between the corresponding points measured along the line size, modulus

  = / Pi. China's synchronous toothed belt with modulus system, the specifications with the modulus × bandwidth × number of teeth said.

  Teeth Belt Compared with the ordinary belt drive, synchronous toothed belt drive is characterized by: ① steel rope made of the strong layer after loading deformation is minimal, the band of the belt is basically the same, with no pulley between the relative sliding, Than the constant, accurate; ② tooth belt thin and light, can be used for high speed occasions, the transmission speed of up to 40 m / s, transmission ratio of up to 10, transmission efficiency up to 98%; ③ compact, Grinding wear; ④ due to the small pull, bearing capacity is also small; ⑤ manufacturing and installation of high precision requirements, requiring a strict center distance, so the cost is higher. The synchronous toothed belt drive is mainly used for applications where the transmission ratio is accurate, such as external equipment in the computer, movie projectors, video recorders and textile machines.

  Teeth Belt Timing belt drive design criteria First, the timing belt drive design criteria Synchronous belt drive is the teeth and gear teeth in turn to transfer power to achieve the purpose of synchronous transmission. Thus, when the torque is transmitted simultaneously, the belt will be subjected to tension, the teeth are sheared, and the toothed working surface will be worn during the entry and exit engagement with the teeth. Therefore, the main failure mode of the timing belt has the following three kinds: (1) the belt with the rope (also known as the skeleton rope) fatigue fracture; (2) with the teeth of the shear fracture: (3) tooth surface wear, Of the pound. According to the experimental analysis, when the timing belt around the pulley, in the enclosed arc, the teeth and the teeth of the teeth with the teeth .2a Da 6, the tooth strength will be greater than the belt tensile strength. At the same time, with the adhesion of the tooth surface of the nylon coating on the surface of the installation, so that the wear resistance of the teeth has been greatly improved. Therefore, under the normal working conditions of the synchronous belt, the main failure mode of the belt is fatigue fracture under the action of variable tension. The timing belt drive is designed according to the tensile strength of the belt as a design criterion. The belt drive is a new type of mechanical drive (see Figure 1). "Because it is a meshing drive, there is no relative sliding between the belt and the pulley, so that the main and the drive from the wheel to achieve synchronization. And Y-band, flat band compared with: CI) drive accurate, no sliding. Can achieve the purpose of synchronous transmission; (2) transmission efficiency is high, generally up to 98 96 (3) speed range, allowing line speed is also high; (magic transmission power range, from tens of watts to several hundred kilowatts; 5) compact structure, but also for multi-axis drive and other advantages.