SUHNER’s new Accu-Lube-Booster is a perfect system for internal coolant-through-tooling for its machining units, including the BEM 20, BEX 15 and BEX 35.
Coolant-through-spindle application effective and efficient with minimum- quantity-lubrication
Common flood-coolant application in chip-generating operations, including a new minimum-quantity-lubrication (MQL) method is getting attention for economic reasons and also for environmental factors.
MQL cooling in chip-generating processes (drilling, milling, saw cutting and tapping) uses a small amount of lubricant/coolant (less than 0.7oz/20ml) of lubricant/coolant per hour).
Why minimum quantity lubrication?
- In parts manufacturing, tooling-related cost is typically 7-17% of total cost when using traditional coolant emulsions. MQL significantly reduces this percentage.
- Reduction of friction yields higher productivity and increases efficiency in parts manufacturing.
- Increased tool life leads to shorter and less frequent machine stop time.
- Nearly-dry chips reduces cost of disposal or recycling.
- Savings in running/replacing the coolant pump system, the coolant itself and energy costs.
MQL technology is used today in many machine tools. The Accu-Lube-Booster-System designed for machining units is an ideal enhancement.
Basic Principle. Suhner‘s booster system uses an integrated frequency-generator controlling a precision metering pump. A predetermined amount of oil flows inside the pressurized booster chamber at 90psi (6 bar) and creates a lubricant mist. This lubricant-air mixture (aerosol) is fed inside tubing to the coolant union at the machining unit. From here, it flows through the spindle and MQL clamping system of an HSK spindle and tool holder system, finally ending at the tip of the cutting tool.
|Control of of fluid level with
low level indicator
|Monitors pressure inside
lubricant mist chamber
|Hose connection to coolant
|Protective enclosure for control components
|3 pumps for inside lubrication
|Convey coolant mist
|Air pressure fitting
|Air supply line intake
|Air filter & dryer
|Separate water and contaniments
|Generate air impulses to the metering pumps
|Lubricant/coolant becomes mist
|Control of booster
|3 pumps for outside lubrication
|Convey coolant mist
|2/2 position air valve
|Control of metering unit
|Reservoir for the coolant/lubricator
Discharged oil film reduces friction between the chips and the tool during machine processing. Most generated heat is absorbed and discharged with the chips.
While transporting aerosol mist from inside the machining spindle to the tool exit, it is important to discharge the lubrication mist in a controlled way; otherwise, desired lubrication effect of the tool will be reduced.
Boosters are adaptable and expandable for different and multiple applications.