Machine lubrication to bearings, gears, guides and top lubrication; machine grease include: hydraulic oil, hydraulic guideway oil and lubricant (grease), different types of machine tools and the different working conditions for oil products performance different requirements:
First, the bearing lubrication
1, the lubrication of plain bearings: plain bearings is commonly used in the transmission mode, lubricants not only to play the role of lubrication but also play the role of cooling and therefore need good lubrication properties of low viscosity lubricants, also need to have a good oxidation resistance, abrasion resistance, anti-rust and anti-foam. Precision grinder grindstone spindle with precision sliding bearing, the bearing clearance special (1 micron), particularly high speed (30000r/min above) should be very small viscosity, the viscosity of the oil excellent for anti-wear 2.0mm2 lubricating oil (40 ° C).
2, the lubrication of rolling bearings: Rolling on the machine, due to the friction coefficient is small, and quiet operation, etc., and thus the machine has a large number of rolling bearings, inner diameter 25 mm, speed 30000r/min below, can be used to enclose the high-speed grease. More than 30000r/min, the application of forced lubrication or spray lubrication. Should be noted that the rolling bearing, in addition to the large, rough exceptional circumstances, the general can not use grease containing solid lubricants.
Second, the gear lubrication
Little shock and vibration of the machine tool gear, the load is smaller, the general does not require the use of extreme pressure additives in lubricants. Need to pay attention to is how to prevent the thermal deformation of the headstock, larger impact load punching or shearing machine, gear, gear oil containing antiwear agent should be used for circulating lubrication or oil bath lubrication, gear oil, in addition to considering oxidation resistance, but also take into account the anti-corrosion, abrasion, anti-corrosion and anti-foam. Select the appropriate gear oil viscosity depending on the type of gear.
Third, rail lubrication
Rail load and speed changes, the general guide surface load 3-8N/cm2 rail frequently repeated movements, so prone to boundary lubrication, and even semi-lubrication caused by the creeping phenomenon, in addition to the machine poor lubrication of design and materials, leading to a crawl the main reason. To overcome the creeping phenomenon, with the exception of fluorine resin rails veneer, etc., to improve lubrication with lubricants containing anti-climb agent, rail lubrication is generally used in the viscosity 32,68,100,150 rail oil, Spain eagle rail oil BESLUX LUDER series (32,46,68,100,150,220) in accordance with ISO 6743/4 standard, L-HG level.
Machine top is a special kind of bearing. Not fixed top load, the high-speed machine tools Rotary's top complex load using the enclosed grease to lubricate.
Other News:
Machine tools and machine tool lubrication oil (fat) performance requirements
Bearing nylon maintains a several opinions
Guide design matters
The determination of rings processing methods
Linear motion ball bearing structure and purpose
South Korea worried that Japan's development of nuclear weapons
Bearing structure on the influence of vibration and noise
Harvard professor: Chinese enterprises to invest should consider the feelings of
