How is the rotor meshing clearance of oil-free twin-screw compressors measured?
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In my workshop, I am repairing an oil-free twin-screw compressor that has synchronous gears; the male and female rotors do not come into contact with each other. It is necessary to use a feeler gauge to measure the clearance between the rotors. What is the specific method for this measurement? For example, at what position should the rotor be turned to obtain the most accurate measurement data?
Methods for adjusting and maintaining the rotor clearance of screw air compressors http://www.docin.com/p-691192409.html
Check using a feeler gauge: 1-1, 2-2, 3-3, 4-4, 1-5, 2-6, 3-1, 4-2, 1-3, 2-4, 3-5, 4-6, for upper and lower gaps
Check using a feeler gauge: 1-1, 2-2, 3-3, 4-4, 1-5, 2-6, 3-1, 4-2, 1-3, 2-4, 3-5, 4-6, for upper and lower gaps
Thank you for the reply. I know that already; I didn’t express myself clearly. What I want to know is at what position during each rotation of the rotor is it best to take measurements – for example, whether it should be when the sealing lines of the male and female rotor teeth are aligned with the rectangular shape at the outlet, or at some other position? When measuring, should a feeler gauge be used on the sides of the male rotor or the sides of the female rotor? What position on the tooth shape?
Thank you for the reply. I know that already; I didn’t express myself clearly. What I want to know is at what position during each rotation of the rotor is it best to take measurements – for example, whether it should be when the sealing lines of the male and female rotor teeth are aligned with the rectangular shape at the outlet, or at some other position? When measuring, should a feeler gauge be used on the sides of the male rotor or the sides of the female rotor? What position on the tooth shape?
The meshing clearance is measured at the pitch circle position, where the clearance is at its minimum. A feeler gauge is used in the direction of the tooth profile; simply put, the value at which the rotor can still rotate or not rotate when the feeler gauge is inserted represents the meshing clearance