Machine tool spindle bearing temperature is too high is how to return a responsibility

Machine tool spindle bearing is one of the important parts, machine tool operation machine to processing products, will be high speed spindle bearing, bearing in the process of operation, is bound to be hot. As we all know, machine tool spindle bearings bearing temperature limit under 45 ℃, if more than 45 ℃, the temperature is too high. Machine tool spindle bearing temperature is too high is going on? The author of follow below bearing up to know. , machine tool spindle bearing temperature is too high in the manufacturing process of the cause of the machine, the spindle bearing overheating of the following reasons: 1, the spindle bearing oil shortage, need to add lubricant; 2, load adjusting too close; 3, spindle speed is too high; 4, spindle motor, or spindle control module is faulty. 5, the main circuit with local short circuit. Spindle operation process, due to insufficient spindle lubrication, lubricating oil is too viscous and main shaft processing, installation and other factors, will cause the spindle bearing temperature rise. Spindle bearing temperature is too high, will cause material expansion, leading to mechanical clearance has shrunk by noise and mechanical damage. Nc machine tools available measuring method of spindle bearing temperature monitoring. By measuring the temperature rise in spindle bearing operation, to understand the main shaft bearing is normal. Bearing temperature limit in temperature not to exceed 45 ℃, if discover in monitoring the temperature of the bearing more than 70 - 80 ℃, it is necessary to stop the machine immediately to check. The machine tool spindle bearing temperature too like how to detect? Spindle bearing gap is too small increase friction force and friction heat, if produce heat does not discharge in time, will lead to bearing overheating, lathe parts corresponding temperature, deformation, resulting in a serious will make high spindle and tail frame range, eliminate the problems should be paid attention to while reducing the spindle bearing heating: reduced the roller diameter, reducing diameter roller can reduce the centrifugal force and gyroscopic moment, thereby reducing friction, reducing calorific value; Adopting new material, the use of reasonable lubrication method, such as oil and gas and oil mist lubrication method for bearing not only have the lubrication effect, also has a cooling effect. Machine can use heat resistance, multi-channel digital instrument and the combination of PLC control system, to realize the main shaft bearing temperature detection. In the before, during and after bearing spindle, install four thermal resistance. Collect the temperature of the four points of PLC control system, to monitor different location bearing temperature rise. Temperature control system of the measuring point by using the thermal resistance temperature measurement, using multi-channel digital instrument to display the temperature of the spindle bearing. PLC to realize the parameter setting, remote monitoring, data storage and alarm processing, and other functions. In the process of the actual programming, register without writing, speaking, reading and writing PLC program, through the method of defining data, after the I/O variables, can directly use the variable name is used in the system control, operation display, data record and alarm, etc. System set a start button to start the control program, set up two red, green indicator light to show the temperature condition. The temperature of the four points within the scope of the requirements, green light, the spindle can be normal operation; When one is measuring point temperature reached highs, even if the spindle rotation speed is not up to par, the red light, CNC system displays the corresponding bearing are alarm at the same time. The operator will be shut down immediately the spindle, and according to the corresponding alarm, check of the condition of the main shaft bearing corresponding location, thereby avoiding the phenomenon of main shaft bearing grind. Second, how to reduce the working temperature of machine tool spindle bearing for the spindle bearing lubrication also has two type: oil mist lubrication method and way of injection lubrication. Main shaft transmission torque, is the main purpose of the main shaft and bearing component became the main shaft, rotor part of the other part, is mainly mechanical rotor part, different spindle assembly function is different, and in the bearing components of the machine tool spindle bearing, and rolling bearing or sliding bearing assembly adult, and rotate at high speed, which will produce a lot of heat. And long-term excessive heat must meet the spindle bearing impact work. Reduce the working temperature of bearing, frequently used way is to lubricating oil. Lubrication method, oil-gas lubrication, oil circulation lubrication of two ways. When using these two approaches to pay attention to the following: 1, when using the oil circulation lubrication, to guarantee the spindle temperature sufficient oil in the tank. 2 just lubricating way, oil and gas and oil circulation lubrication on the contrary, it as long as the bearing capacity when the percent of space can be filled. The advantage of circulating lubrication is, in the case of satisfy the lubrication, can reduce the friction heat, but also can put the spindle component part quantity of heat to absorb. 3, maintenance methods: spindle fever is to first find a heat source, which is bearing the fever, and then turn the shaft by hand, judge whether the tightness of the spindle rotates uniformly, did sink. If it is bearing spindle caused by fever, has to be replaced or cleaning spindle bearings, bearings to add right amount of grease. When cleaning bearing using kerosene or gasoline cleaning, fine cleaning after coarse washed first, and then evenly assembly again after high temperature grease. If bearing caused by heating loads, respectively check the measurement before and after the space between the bearing and bearing clearance adjusting pad, requirements under the external force without lock nut, gap between bearing and bearing clearance adjusting pad at 0. 08mm- 0. 10 mm between, and lock nut again, eliminate the bearing clearance. Above is the author of the bearing spindle bearing temperature is too high, to you why and how to decrease the temperature of bearing, bearing is the house in the production of machine tool spindle bearing manufacturer, we produce high quality bearing, after-sale service, choose bearing, don't worry about the machine tool spindle bearing temperature is too high, we will regularly for you for what you have to buy bearing for inspection and maintenance, so you have no trouble back at home in the process of production and processing! Tags: machine tool spindle bearing temperature is too high