Official UK distributors of MWM Schmieranlagen products
MQL technology for minimal internal tool lubrication
Internal MQL for Cutting Tools
Technological developments aimed at shortening the manufacturing processes are fundamental to faster and more efficient production.
Dry machining with MQL technology offers enormous potentials for process optimization, leading to many valuable competitive advantages.
MQL generates less heat during the cutting process. As a result, the tool lasts longer, the cutting speed increases, the surface quality improves and the entire machining process is completed in a shorter time and at lower costs.
With a consolidated know-how and application experience, MWM has developed a complete family of systems for internal MQL - all of which deliever high performance and maximum reliablility.
Energy and cost savings through MQL
MQL-Systems replace conventional coolant in the modern machining processes. The use of a special technology greatly reduces the friction between workpiece, chip and tool. As a result less heat is produced, the tools last longer, the cutting speeds increase and the entire machining process is completed in a shorter time and at lower costs. Depending on the specific machining process, savings up to 30% can be achieved.
Dry machining with MQL technology offers enormous savings potentials in series production. The traditional method based on coolant requires several devices, i.e. emulsion cooling and cleaning, wet chips processing and waste water treating. All of these devices are not needed when using MQL.
MQL system benefits at a glance
Up to 50% energy saving, compared to coolant
Minimized lubricant consumption (on average: 20 ml/h)
No water consumption
Chips and machined parts nearly dry (no oil soiling)
Elimination of the metalworking fluid (emulsion) system
No need to prepare and dispose of used metalworking fluid
No thermal shock on the tool cutting edge
Longer tool life
Higher cutting speed
Better surface quality
Perfect execution of deep holes, even with L / D > 30
Complete visibility over the on-going process (no scattering)
Clean working environment, compliance with health and environmental regulations
Energy saving with MQL
Energy required by a machine tool, potential savings resulting from the use of MQL technology.
Cost savings with MQL
Comparison: coolant vs MQL minimal lubrication
The aerosol is generated inside the MQL system using algorithms that regulate the technical generation process. The aerosol is conveyed to the lubrication point, either through flexible pipes and channels inside the machine or through external side nozzles. The oil particles get condensed into small droplets and are precisely addressed to hit the tool cutting edge.
The individual volumetric flow rates are perfectly regulated by a control device inside the MQL system and all the data for process monitoring are transferred to the machine control system. A particular advantage of the MQL is the instrumental response time of less than 0.1 sec. In this way the systems can operate in a total safe mode, even on very dynamic and fast machine tools.
The lubricant medium used for MQL is a very fine mixture of compressed air and micronized oil droplets, sized up to 1 micron, defined as “aerosol”. The aerosol is conveyed to the lubrication point through flexible pipes. The absolute volumetric flow rate is optimally regulated by the MQL system. Depending on the different processing needs, the concentration of the oil particles can be increased or decreased separately for each tool through the machine CNC.
The recommended MQL lubricants are exclusively of synthetic origin (or bio-based). System filling can be manual or (optionally) fully automatic, is totally safe and maintenance free.
A system for the future: suitable for every application
MQL systems can be used on any type of modern CNC machine tool and almost in all mechanical processes:
Rotary transfer machines
Portal milling machines
Turning and milling centers
Flexible production systems
Double spindle machine tools
Multi spindle heads
Our team of experts are on hand to develop the best solution for each tool and material and to meet the specific requirements of each single user.