After the reducer is installed, the accuracy detection and adjustment can be carried out through the following methods:
Test
Appearance inspection: Check whether the reducer has bumps or scratches, whether the components are connected tightly, whether there is any looseness, and whether the oil marks, ventilators and other components are properly installed and not damaged.
Position accuracy detection
Level detection: Use a level to place the reducer on the installation base of the reducer or on the processing plane of the machine body to detect the level of the reducer. It is required that the reduction gear installation level deviation does not exceed the specified value, and is generally within the range of 0.1mm - 0.2mm per meter.
Coaxiality detection: For reducers connected to power equipment such as motors, the coaxiality of their input shaft and the output shaft of the power equipment must be detected. The dial meter can be used for measurement, fix the dial meter to the motor or reducer, the meter head touches the circumferential surface of the connecting shaft, and rotates the shaft for one round, and the difference between the maximum and minimum readings of the dial meter is the coaxial degree deviation. It is usually required that the coaxial deviation is not greater than 0.05mm - 0.1mm. When the output shaft is connected to the working machine, the same method is used to detect the coaxiality.
Parallelism detection: If the reducer is installed in a transmission system with multiple components, it is necessary to detect its parallelism with adjacent components. For example, when the reducer is driven by a chain or gear and other components, it is necessary to ensure the parallelism between the mounting plane of the sprocket or gear and the adjacent components. It can be measured using a caliper or a dial gauge. The parallelism deviation is generally controlled within 0.05mm - 0.1mm.
Tooth side clearance detection: Use a feeler gauge or lead compression method to detect the tooth side clearance of the gear pair. The feeler gauge method is to directly insert the feeler gauge into the gap on the tooth side; the lead compression method is to place the lead wire on the tooth surface, then rotate the gear to measure the thickness of the extruded lead wire, which is the gap on the tooth side. The gap on the tooth side of the ZDY315 reducer is generally between 0.1mm and 0.3mm. The specific value depends on the specifications and usage requirements of the reducer.
Meshing accuracy detection: Check the meshing condition of the gear by coloring method. Apply pigments such as reddish powder on the tooth surface of the driving gear, and then turn the reducer to mesh the gears and observe the coloring on the tooth surface of the driven gear. It is required that the tooth surface contact spots be no less than 50%-60% along the tooth length direction and no less than 40%-50% along the tooth height direction.
Adjustment
Horizontal adjustment: If the level exceeds the difference, it can be adjusted by adding and subtracting gaskets under the base of the reducer. The gasket should be flat and uniform in thickness. After adjustment, measure it with a level again until the level meets the requirements.
Coaxial degree adjustment: When the coaxial degree does not meet the requirements, it can be solved by adjusting the installation position of the motor or reducer. Loosen the fixing bolts of the motor or reducer, use tools such as jacks or crowbars to move the equipment in detail, while monitoring the reading of the dial meter until the coaxiality reaches the specified value, and then tighten the bolts.
Parallelism adjustment: For situations where the parallelism exceeds the difference, it can be achieved by adjusting the installation position of the relevant components or trimming the installation surface. If the installation position of the sprocket or gear is adjusted so that its installation plane is parallel to adjacent parts, the installation surface can be ground or scraped if necessary.
Tooth side clearance adjustment: If the tooth side clearance is too large or too small, it can be achieved by adjusting the axial position of the gear or replacing adjustment gaskets of different thicknesses. For some adjustable bearing seats, the tooth side clearance can also be adjusted indirectly by adjusting the preload force of the bearing. After adjustment, the tooth side clearance must be checked again until the requirements are met.
Meshing accuracy adjustment: If the meshing accuracy does not meet the requirements, it can be improved by adjusting the installation position, center distance of the gear or appropriately trimming the gear. For example, adjust the axial position of the gear so that the tooth surface contact spots meet the specified requirements. For reducers with adjustable center distance, the center distance can be adjusted appropriately to optimize the engagement situation.
