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Double guide rail line module specification _ _ fully sealed linear module parameters precision linear slide machine factory
by：Zhenyu
2020-10-01
Ball screw maintenance common fault analysis of the ideas and methods
( 1) Axial clearance adjustment. In order to guarantee the reverse transmission precision and axial stiffness, eliminate the axial clearance. Double nut ball screw vice eliminate clearance method is to use the relative axial displacement of the two nut made of two ball nut ball against respectively in the spiral groove on the two opposite sides. Preloaded by this method eliminating axial clearance, shoulds not be too big, prestressing force should be paid attention to in the prestressing force make racing torque increases, thus reducing transmission efficiency, shorten service life.
in addition, but also eliminate the screw to install the clearance between the part and driving part. Commonly used method of double nut screw to eliminate gaps are: hot piece of adjustable gap type; Thread the gap type; Tooth difference adjustable seam type.
( 2) Regular inspection of bearing. Should periodically check screw bearing and lathe bed connection for loosening and whether support bearing damage, etc. If you have more questions, should tighten loose parts in time and replace the bearing.
( 3) The ball screw pair of lubrication. Lubricant can improve the wear resistance and transmission efficiency. Lubricant can be divided into two categories, lubricating oil and grease. Lubricating oil general oil for total loss system; Grease can use lithium grease. Grease & ndash; As in the screw groove and install nut shell space, while lubricating oil through the oil hole on the shell into a space of the nut. Change once every six months on the ball screw pair of grease, cleaning the old grease on the ball screw pair, coated with new grease. With lubricating oil lubrication of ball screw pair, can be in before each milling machine work come on again.
( 4) Ball screw pair of protection. Ball screw vice and other rolling friction drive components, should avoid hard dust or scraps dirt to enter, therefore, is equipped with protection device. Such as ball screw pair of leakage on the milling machine, closed shield should be adopted, such as using spiral spring steel belt, telescopic pipe and folding casing pipe, etc. Connect one end of the shield in the ball nut when installation of end face and the other end fixed on the ball screw pair of bearing seat. If in a concealed location, can use seal protection, sealing ring in the ends of the nut. Contact of the elastic sealing ring made of oil resistant rubber or nylon, which made with screw thread hole groove shape matching, contact sealing ring of dust prevention effect is good, but because of contact pressure, friction torque increases slightly. Non-contact sealing ring is also called the labyrinth seal, it made from hard plastic, which the shape of the hole and screw thread rolling way, on the other hand, and a slight clearance, which can avoid friction torque, but the dust effect is poor. Work should avoid lighting strike protection device, there is a protective device should be replaced in a timely manner.
( 1) Axial clearance adjustment. In order to guarantee the reverse transmission precision and axial stiffness, eliminate the axial clearance. Double nut ball screw vice eliminate clearance method is to use the relative axial displacement of the two nut made of two ball nut ball against respectively in the spiral groove on the two opposite sides. Preloaded by this method eliminating axial clearance, shoulds not be too big, prestressing force should be paid attention to in the prestressing force make racing torque increases, thus reducing transmission efficiency, shorten service life.
in addition, but also eliminate the screw to install the clearance between the part and driving part. Commonly used method of double nut screw to eliminate gaps are: hot piece of adjustable gap type; Thread the gap type; Tooth difference adjustable seam type.
( 2) Regular inspection of bearing. Should periodically check screw bearing and lathe bed connection for loosening and whether support bearing damage, etc. If you have more questions, should tighten loose parts in time and replace the bearing.
( 3) The ball screw pair of lubrication. Lubricant can improve the wear resistance and transmission efficiency. Lubricant can be divided into two categories, lubricating oil and grease. Lubricating oil general oil for total loss system; Grease can use lithium grease. Grease & ndash; As in the screw groove and install nut shell space, while lubricating oil through the oil hole on the shell into a space of the nut. Change once every six months on the ball screw pair of grease, cleaning the old grease on the ball screw pair, coated with new grease. With lubricating oil lubrication of ball screw pair, can be in before each milling machine work come on again.
( 4) Ball screw pair of protection. Ball screw vice and other rolling friction drive components, should avoid hard dust or scraps dirt to enter, therefore, is equipped with protection device. Such as ball screw pair of leakage on the milling machine, closed shield should be adopted, such as using spiral spring steel belt, telescopic pipe and folding casing pipe, etc. Connect one end of the shield in the ball nut when installation of end face and the other end fixed on the ball screw pair of bearing seat. If in a concealed location, can use seal protection, sealing ring in the ends of the nut. Contact of the elastic sealing ring made of oil resistant rubber or nylon, which made with screw thread hole groove shape matching, contact sealing ring of dust prevention effect is good, but because of contact pressure, friction torque increases slightly. Non-contact sealing ring is also called the labyrinth seal, it made from hard plastic, which the shape of the hole and screw thread rolling way, on the other hand, and a slight clearance, which can avoid friction torque, but the dust effect is poor. Work should avoid lighting strike protection device, there is a protective device should be replaced in a timely manner.
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