Vibration fault caused by electrical control of CNC gantry milling machine processing has randomness, which can be distinguished by the following methods:

1, separation method: for the gantry milling motor built-in feed or spindle movement, the motor and the coupling of the transmission mechanism should be loosened or hung in the neutral position, respectively, with a variety of speed operation, according to whether the motor is running smoothly to identify the cause of vibration.

2. Parameter method: In the closed-loop system, improper parameter setting may cause oscillation, mainly due to the change of mechanical clearance after the machine runs for a period of time, some parameters have to be adjusted again.

3, external drive method: CNC CNC gantry milling spindle operation caused by vibration, can use a common AC motor through the coupling to drive the spindle rotation to identify the cause of vibration. Attention should be paid to the concentricity of the spindle and the motor shaft.

4, current measurement method: vibration fault caused by mechanical reasons will usually cause torque change, measurement of motor current in constant speed no-load operation, observe whether the change is the same as vibration can be identified.


Large machinery and equipment processing how to maintain quality?

1. Control the quality of raw materials: high-quality raw materials are the prerequisite for the production of high-quality products. Our company uses 40Cr and 45 steel to manufacture gears. No matter through which way, raw materials to the factory after strict chemical composition test, grain size determination, purity evaluation. The purpose is to adjust the heat treatment deformation in time and improve the quality of tooth profile machining.

2, civilized production: gear transmission noise has more than 30% of the reason from burr, bump. Some factories in the gear box before assembly, remove burrs and knock, is a passive approach.

3. Prepare organizationally for handling. It should be noted that in the normalizing or tempering process, the temperature of the furnace should be kept even, and the work piece should be heated and cooled evenly by using workstation utensils, and it is strictly prohibited to pile up together.

4, control gear accuracy: the basic requirements of gear accuracy: through practice verification, gear accuracy should be controlled in GB10995-887-8, linear speed is higher than 20m/s gear, tooth distance deviation, tooth ring radial runout tolerance, tooth direction tolerance should be stable to reach 7 precision.

5, to prevent heat treatment deformation: teeth blank in rough machining into fine forging, normalizing or tempering treatment.

Guilong manifold blocks