4 Guarantee and improve the accuracy and adjustment accuracy of the machine tool. From the previous error analysis, the transmission error of the machine tool drive chain will cause the gear to move eccentrically, and the most influential part is the indexing worm pair. Therefore, the process that the machine tool should have is maintained. Accuracy is an important aspect of ensuring the accuracy of gear machining. If the length of the common normal line after the hobbing is found to be out of tolerance, check the meshing condition of the machine table's indexing worm pair. If the meshing clearance exceeds 0.0 3 mm, it should be adjusted to ensure that it is always within 0.03 mm. Otherwise, the worm pair must be Overhaul. When rolling the helical gear, it should be noted that the calculation of the differential exchange gear ratio is accurate to five or six decimal places.
3. Improve assembly quality
Proper assembly improves the quality of the gear unit, reduces noise and avoids early wear.
(1) The gear and shaft are installed by cold-packing to reduce the deformation of the gear due to heating, including tooth shape and end face rounding. The same batch of gears adopt different assembly methods, and the noise of the cold-mounted reducer can be reduced by 3 ~ 5 dB.
(2) Control the meshing clearance of the gears. Make appropriate fittings during assembly so that the meshing clearance is around 0.14 mm. If the meshing clearance is too large, there will be a crashing sound during the gear running; if the meshing clearance is too small, the sound will be boring and noise will increase.
(3) After the assembly of the reducer is completed, the tooth surface of the reducer can be strengthened to avoid the early heavy wear caused by sudden large load in the working state. If the tooth surface engagement after running is better, the overall noise can be reduced by about 2 dB before running.
4. Conclusion
The quality control of the reducer manufacturing is a systematic project. From the blank machining to the hobbing and assembly, the precision must be ensured in every link. The geometrical dimensions and geometrical tolerances can be controlled by measurement, and the control of the tooth shape needs to be adjusted from the control machine. , hob grinding and installation accuracy, the assembly is mainly to control the deformation of the gear.
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Gamicos, aims to provide customers more options when they want to buy a product to measure object's pressure. Differential Pressure Sensor, also called differential transmitter or differential transducer, is used to measure the difference between two pressures, It can be used to measure the differential pressure of different medium like water, air, oil, gas, etc. The working principle of the differential pressure sensor is that the measured pressure directly acts on the diaphragm of the sensor, so that the diaphragm produces a small displacement proportional to the water pressure, so that the resistance value of the sensor changes, and the electronic circuit is used to detect this change, and convert the output of a standard measurement signal corresponding to the pressure.
Differential Pressure Sensor, Differential Pressure Level Sensor, differential air pressure sensor; differential pressure transmitter
Xi'an Gavin Electronic Technology Co., Ltd , https://www.gamicos-meas.com