One. Advantages and disadvantages of rack and pinion products

1. Advantages: It is a relatively widely used mechanical transmission in modern machinery, with high transmission accuracy, up to 0.1mm, large bearing capacity, fast transmission speed, > 2m/s, infinite length of docking and continuous and high-speed operation. will affect the rack accuracy. If the configuration is high, the positioning accuracy can reach 0.03~0.05mm, the repeat positioning accuracy is about 0.03mm, and the backlash is only below 0.01mm. Compared with the ball screw, the rack and pinion drive can transmit the motion between the two axes at any angle, and can ensure a constant transmission ratio. It has higher reliability, stable operation, better durability and greater transmission power. It is widely used in lasers. Cutting machine, glass/steel plate CNC cutting machine, gantry boring and milling machine, construction elevator and aluminum processing center, etc.

2. Disadvantages: The requirements for machining and installation accuracy are relatively high. If the machining and installation accuracy is poor, it will cause problems such as large transmission wear and large noise.

Second, the advantages and disadvantages of screw products

1. Advantages: Ball screw cannot be self-locking, high precision, high transmission efficiency, low noise, more expensive, suitable for high-speed round-trip transmission; trapezoidal screw can be self-locking but low transmission efficiency is not suitable for high-speed round-trip transmission, generally used for vertical Transmission; lead screws are widely used in electric cylinders, small-format CNC cutting machines and CNC machine tools.

2. Disadvantages: The transmission gap of the trapezoidal screw becomes larger after a long time, and the return stroke accuracy becomes worse; the transmission length of the ball screw should not be too long. It is generally used in short-distance linear motion with high precision.

Three. Advantages and disadvantages of synchronous belt products

1. Advantages: low noise, high short-distance transmission accuracy, and high transmission speed. It can be used for short-distance transmission from servo motor to transmission gear or from servo motor to lead screw. Generally used for servo electric cylinder (return type electric cylinder), some printers, small numerical control equipment, etc.

2. Disadvantages: The large transmission distance is especially not suitable for precise positioning and continuous motion control, such as the XY axis of large-format CNC equipment. The transmission length should not be too large, otherwise large elastic deformation and vibration need to be considered, the bearing capacity will be large, and the belt should be widened no matter how large the load is.