Robot Reducer is a power transmission mechanism that uses a gear speed converter to reduce the rotation speed of the motor to the desired speed and obtain a larger torque. The application range of robot reducers is quite extensive. If the noise of the reducer is too large, it will hinder people's normal rest, study, and work. Therefore, low-noise reducers should be a research and development topic for our reducer companies. What are the common parts wear or damage of robot reducers?
Reducing the gear transmission noise of robot reducers during operation is an important research topic in the industry. After years of research, many experts have proposed optimizing gear parameters, such as modification coefficients, tooth height coefficients, pressure angles, and center distances, to minimize the meshing impact speed and keep the ratio of the meshing exit impact speed to the meshing entry impact speed within a certain value range, thereby reducing or avoiding meshing pitch circle impact gear design methods, which can also significantly reduce gear noise.
First is gear wear, including gear surface wear, tooth breakage, gear shaft hole or keyway wear. Additionally, there is wear at the bearing hole of the reducer, thread failure at screw holes, wear at the shaft surface of the reducer, keyway wear, and shaft bending. The specific repair methods for these different parts damages are as follows:
For wear on surfaces like shaft holes and keyways, electroplating can be used to restore the original part accuracy. Shaft bending in robot speed reducer can be corrected using a press. For damage such as tooth breakage, there is no other way but to reprocess new parts.
Cleaning the internal parts of robot reducers should not be ignored. Most people only clean the exterior of the reducer, and without cleaning the internal parts, it can affect the operation of the machinery. Therefore, it is necessary to clean the parts. However, before cleaning the parts, the reducer must be disassembled, and the following issues must be noted.
Regularly disassemble and drain the oil
Disassemble the upper housing of the reducer. For robot reducers with a half-coupling, remove the half-coupling first. Remove the fixing bolts, keep the nuts on the bolts properly, and check the upper housing for any damage or cracks. Mark the assembly position, and disassemble the bearing end cover. Check for any missing bolts or other abnormalities, and once confirmed, use screws to lift the upper housing, place it on a prepared pad. Use a feeler gauge or lead wire method to measure the clearance of each bearing, measure several points per bearing, and record the readings. Drain the lubricant from the reducer and store it in a dedicated oil barrel.
Preserve the parts
Lift out the drive shaft and driven shaft assemblies. Mark the gear meshing positions. After lifting, place each gear assembly on a dry wooden board, arrange them neatly and securely to prevent damage, and disassemble the bearings and gears of each shaft.
Clean, inspect, and replace
Use kerosene to clean the bearings, housing, and gears, preparing for subsequent inspection. During disassembly, be careful not to damage the internal parts of the equipment. Clean the parts thoroughly and dry them. If any parts are damaged, replace them promptly. Then, reassemble correctly, preparing for the next use, thus effectively improving the working efficiency and longevity of robot speed reducers.
