What are the specific steps for adjusting the axis lines of the input and output shafts of ZL600-31.5-2 reducer

Adjust the axis lines of the input shaft and output shaft of ZL600-31.5-2 reducer, mainly to ensure its coaxiality with the connected drive shaft and load shaft. The specific steps are as follows:

1. Preparation work

Tool preparation: Prepare tools such as coaxiality measuring instrument, laser alignment instrument, micrometer, feeler gauge, gasket, wrench, etc.

Inspect components: Check the gearbox and related connecting components (such as motor shaft, coupling, load shaft, etc.) for damage, wear, or deformation to ensure that all components are functioning properly.

Preliminary alignment: Before installing the gearbox, conduct a preliminary alignment of the connecting components to determine their approximate positions, laying the foundation for subsequent precise adjustments.

2. Install the reducer and measure the deviation

Installation of gearbox: Fix the gearbox on the installation base or frame according to the design requirements, ensuring a firm installation.

Measurement of coaxiality: Use a laser centering instrument to detect the coaxiality between the input shaft and the motor shaft, as well as between the output shaft and the load end. Alternatively, use a dial gauge and a feeler gauge to measure the angular and axial deviations of the shaft. When measuring with a dial gauge, rotate the two halves of the coupling 180 degrees simultaneously with the dial gauge to eliminate surface errors. Divide the deviation value displayed by the dial gauge pointer by 2 to obtain the shaft deviation value. Calculate the average of the two differences to obtain the angle deviation value.

3. Adjust the axis line

Adjust position: Based on the measurement results, adjust the installation bolts or base of the reducer to change its position, so that the axis lines of the input shaft and output shaft coincide as much as possible. If the coaxiality error is large, it may be necessary to move the gearbox significantly.

Use shims: Add or remove shims between the reducer base and installation surface to fine tune the height and angle of the reducer, thereby achieving better coaxiality. The thickness of the gasket should be determined based on the measured deviation value.

Re measurement: After each adjustment, the coaxiality should be checked again using a measuring tool to ensure that the adjustment direction is correct and the deviation gradually decreases. Repeatedly adjust the thickness of the gasket and move the position of the gearbox until the coaxiality meets the requirements. Generally speaking, the radial deviation should be controlled within 0.05mm, and the angular deviation should be ≤ 0.1 °.

4. Consider thermal expansion factors

Due to the heat generated by the gearbox during operation, the axis will rise and the distance between the axis centers will increase. Therefore, the influence of thermal expansion should be considered when adjusting. Normally, the centers of the high-speed and low-speed shafts of the gearbox are slightly lower than the centers of the motor shaft and the driven shaft to compensate for thermal expansion during operation. The specific compensation value can refer to the technical manual or relevant standards of the gearbox.

5. Final inspection and fixation

Comprehensive inspection: After the adjustment is completed, thoroughly inspect the installation of the reducer again, including whether the bolts are tightened and whether the coupling connection is good.

Trial operation: Before formal use, conduct a trial operation to observe the operating condition of the gearbox, such as whether there are any abnormal vibrations, noises, etc. If any problems are found, the machine should be stopped for inspection and the coaxiality should be readjusted in a timely manner.