What are the steps to check the coaxiality of the motor shaft and the input shaft of the reducer when installing the ZQ350-25-III reducer?

When installing the ZQ350-25-III reducer, the steps to check the coaxiality of the motor shaft and the input shaft of the reducer are as follows:

1. Preliminary correction : Use visual measurement to compare the front and back of the docking hand with the steel ruler, so that the front and back of the motor and reducer are initially aligned to reduce the start error, and calibrate the motor center high for the subsequent dial meter to reduce the error.

2. Proofread the center line contour : Install the dial meter in the main view direction, fix the magnetic seat of the dial meter to the input shaft of the reducer (if the reducer is inconvenient to rotate, the magnetic seat can also be installed on the motor), rotate the reducer to take over (or the motor shaft) for one turn, record the readings of the dial meter at the upper and lower points, and calculate the reading difference ΔL1 at the upper and lower points of the dial meter. Then, at the four anchor screws of the motor, a thick spacer of ΔL1/2+ (0.10~0.15) mm is added at the same time, with 0.10~0.15mm being the empirical value, which is used to compensate for the error caused by the failure of the motor anchor screw when typing the dial.

3. Front and rear direction correction (calibration start) : In the top view, first align the front and back of the handle with a steel ruler. Then use a block gauge or a vernier caliper to measure the dimensions of the front and rear ends of the takeover. According to similar triangle principles, calculate h2=(b2-b1) A/∮D, where b2 and b1 are the measured dimensions of the after and front ends of the takeover, A is the distance from the motor anchor screw to the takeover, and ∮D is the diameter of the takeover. After calculating h2, the motor does not move at point F, and move the motor slowly at point E, read the dial meter value until the dial meter pointer compresses h2 and stops moving.

4. Confirm the coaxiality : Re-print the dial table, measure the beginning of taking over, and confirm whether the coaxiality of the motor and reducer taking over is within the allowable range. Generally speaking, use a dial gauge to measure the flange end face jump ≤0.05mm and the radial jump ≤0.03mm (scenes with high accuracy requirements need ≤0.02mm). If it is within the allowable range, the coaxial degree calibration is all completed; if it is not there, fine adjustment is required. If the upper and lower starts of the take-up are not within the allowable range, the motor handles the take-up horizontally in the vertical direction. Use a block gauge or a vernier caliper to measure the upper and lower starts of the take-up. According to the similar triangle principle, calculate h1=(a2-a1) A/∮D, and then adjust it after padding h1 at point E. If the front and back of the takeover are not aligned, the translation motor can be adjusted according to half of the reading difference ΔL2 at the front and back points of the dial table.