Many users have responded to us. In the process of installing crossed roller bearings, the crossed roller bearings themselves can achieve the required accuracy, but after installation, they can not reach the accuracy. Today, Shanghai Axis Research Trade Engineer will share the cross roll for everyone. Sub-bearing installation accuracy method.

The engineer explained that the main reason for the insufficient accuracy of the crossed roller bearing after installation is that we cannot guarantee whether the temperature value of the heated area of the crossed roller bearing during the heating process is uniform during the heating process. If the temperature is too high, the cross roller bearing will be produced. Annealing, reducing the mechanical properties of crossed roller bearings; too low temperature, insufficient thermal expansion value, difficult to assemble

To solve this problem, we propose a new method to change the traditional heating assembly of bearings.

1. Use electric heating instead of acetylene oxygen to warm. The planar electric furnace is designed into a cylindrical electric furnace, which is called a cross-roller bearing electric heater. According to the inner diameter of different crossed roller bearings, it can be designed as a cross-roller bearing electric heater with different power and specifications (the best applicable range) The inner diameter of the crossed roller bearing is φ300mm/above). This heating device has the following advantages: uniform and stable thermal radiation, and the surface of the heated cross roller bearing is smoke-free, clean and clean, which is convenient for measuring and controlling the temperature of the crossed roller bearing.

2. The temperature of the heated cross roller bearing surface is monitored by an infrared thermometer. The heating value of the cross roller bearing assembly is generally controlled at 100 ° C ~ 120 ° C. Within this temperature value, the cross-roller bearing steel has the largest thermal expansion value, which facilitates the assembly of the crossed roller bearing. This temperature value does not change the mechanical properties of the crossed roller bearing and has high reliability.

In summary, the cross roller bearing electric heater is superior to the traditional acetylene oxygen heating, which is an effective method to improve the assembly precision and working efficiency of the cross roller bearing and reduce the labor intensity.

Cross roller bearing accuracy improvement method

After the cross roller bearing is installed in the main machine, if the radial runout of the measuring spindle is measured, it can be found that the measured value of each revolution has a certain change; when the measurement is continuously performed, it can be found that after a certain number of revolutions, the change will occur. Approximately repeated. The index for measuring the degree of change is the cyclic rotation precision, and the change approximately repeats the required number of revolutions to represent the “quasi-period” of the cycle rotation accuracy. The magnitude of the magnitude change in the quasi-period is large, that is, the cycle rotation precision is poor. .

If the spindle is properly preloaded, the speed is gradually reduced to close to the duty speed to implement the “run-in” function of the cross roller bearing, which can improve the cycle rotation accuracy of the spindle.

Luoyang Hongyuan Bearing Technology Co., Ltd. is pleased to solve the problem of crossed roller bearing bearings. If you have any problems with crossed roller bearings, you can contact us.