Category: Knoll

KNOLL: LubiCool®-S High Pressure Coolant System

 

 

KNOLL’s LubiCool®-S high-pressure unit is designed for mobile use with machine tools in machining processes, particularly automatic lathes with a fixed/sliding headstock. The unit is used to clean the cooling lubricant and to supply the machine with high pressure coolant.

The potential application areas include

  • Challenging machining processes
  • Machining operations involving difficult materials (e.g. high-alloy steels, titanium, copper, bronze
  • Situations where space for installation is particularly limited
  • Initial equipment and retrofitting

For more Product Information:  KNOLL LubiCool®-S High Pressure System

 

KNOLL: VL Vacuum Filter Systems

Application Areas

The vacuum filter VL is a high performance filter for cleaning the coolant lubricants of machining processes, in particular grinding processes. Depending on the requirement, several filter elements can be used for individual machines (locally) or machine groups (centrally). Its special efficiency is a result of high energy efficiency, low cooling lubricant loss and low disposal costs.

  • Production of pure concentrate with low residual moisture as standard without filter aids
  • Optimized filter capacity, filter quality and energy efficiency thanks to a flawless control system
  • Continuous filter process without reverse flushing interuption
  • Forced degasification of coolant lubricants in the filter
  • Can be used for different machining processes, materials and coolant lubricants
  • Problem-free removal of light metal chips

Filtering Process

The contaminated liquid flows through the inlet box into the filter. It then runs through the filter belt into the filter chamber. From there, a filter pump conveys the filtered medium into the clean tank. The vacuum pump generates a vacuum in the filter chamber. The high pressure differential at the filtering surface creates a thick filter cake (concentrate) on the filter belt. This filter cake also acts as a filter medium and separates smallest dirt particles. The filter and vacuum pumps are regulated demand-driven and and provide for a tranquilized, constant filtering process.

Filter Belt Regeneration

The permeability of the filtering surface decreases as the filter cake grows. Now the belt drive switches on and conveys the carrier belt together with the filter belt a little further. Thereby, permeable filter belt reaches the filter surface and the volumetric flow through the filter surface continues to rise again. The feed length varies in such a way that the set clock cycle remains constant.

The endless filter belt passes through the following stations:

  1. Filtering section (separation of the dirt particles)
  2. Drying section (extraction of liquid from the concentrate)
  3. Cleaning with air or brush (removal of the concentrate)
  4. Back flushing (removal of the residual particles)

Please contact us for more information on KNOLL Filtration Systems for your process.

 

 

KNOLL: Chip Reducers

 

  • Chip Reducer ZV-J (Single Shaft with Double Faced Blades)

KNOLL chip reducers cut metal and plastic chips to bulk material quality. The reducers can be installed on machine tools or at central collecting points. Depending on model, horizontal or vertical chip feed is possible, together with faulty part ejection in some applications.

Please contact us for more information on the KNOLL Chip Reducers for your machining process.

 

COVID-19 Message from KNOLL

Dear Sir or Madam, dear business partners,

We wish to inform you that we have introduced special measures in the company as a result of the coronavirus crisis. Approximately 50 % of the entire workforce are no longer in the company. They are either working from home, on reduced working hours or are on annual leave. Apart from a small number of exceptions, the apprentices and trainees are also at home. The reduced workforce on-site reduces the contacts and risk of infection.

Our plant remains fully functional despite the restrictions. At present the material supply is secured. Our service and sales team is also available to assist you if needed. All our employees can still be reached via the normal channels either by telephone or e-mail. We are also working with Microsoft Teams and can communicate with you by video conference.

With best regards and stay safe!

 

KNOLL AerosolMaster® System with ATS Technology

KNOLL Maschinenbau, Bad Saulgau, has replaced its Minimum Quantity Lubrication system ControLube with the AerosolMaster®system, which is based on ATS technology (aerosol dry lubrication). The system can be supplemented by cryogenic cooling technology. This has come about by the KNOLL acquisition of Rother Technologie GmbH & Co. KG, Bad Urach, including all of its patents, retroactive to July 1, 2019.

For five years, KNOLL Maschinenbau, one of the leading suppliers of conveyor and filtration systems for chips and cooling lubricants in metal processing, has been offering an alternative to wet-cooling lubrication. Managing Director Matthias Knoll is certain that “There are production areas where the future clearly belongs to minimum quantity or dry lubrication.”

Matthias Knoll is sticking to his opinion, even though the company is now discontinuing its previous MQL product – the high pressure ControLube system: “Because of its lubricating results, ControLube is a very good system that produces a particularly fine aerosol. Its disadvantage: It requires a lance through the spindle, which many machine tool manufacturers can not implement. With AerosolMaster®, we have now found an alternative lubrication system that achieves a comparably fine aerosol but is much easier to implement in the machine.”

Rother Technologie. Managing Director Reiner Rother explains: “We were looking for a partner or successor to whom it would make sense to hand over our MQL know-how, which has been acquired over nearly 25 years, and who will continue our products in the long term. KNOLL Maschinenbau, with its experience in the MQL business and its worldwide sales and service structures, was a desirable candidate for us. ”

At EMO, Reiner Rother further described the features of the AerosolMaster® : “Even without a lance in the spindle, we can perfectly lubricate the tool cutting edge and prevent heat from machining.” The technology behind it: The fine aerosol (droplet size 0.1 μm to 0.4 μm) is produced in a pressure vessel via a special venturi nozzle and patented control and regulation technology. Like the usual cooling lubricants, the aerosol is guided along a single channel, for example, through the internal cooling channels of the tool to the cutting edge.

In addition to the high aerosol quality, which has been repeatedly verified at Knoll, Matthias Knoll was particularly impressed by the simple installation: “Not only conventional MQL systems can be converted to the AerosolMaster®. Without much difficulty, it is even possible to convert many wet-cooled machines.”

With the acquisition of Rother, KNOLL has yet another trump card up its sleeve: The AerosolMaster® can be combined with the cryolub® cryogenic cooling technology – also patented by Rother – for example, into the AerosolMaster® 4000 cryolub®. By using liquid CO2, the cutting contact zone can then be cooled down to -78 °C. This is particularly advantageous in the case of heavy-duty machining of titanium and other materials that have a low thermal conductivity. Reiner Rother summarizes this in figures: “With the ‘normal’ AerosolMaster®, we can achieve a productivity increase of 30 to 70 percent; with the cryo system, the increase is even greater, between 70 and 200 percent.”