Category: Coolant Handling

KNOLL: Centrifugal Pumps

KNOLL Centrifugal Pumps are available as submersible or block pumps. These flow machines are used primarily on machine tools to convey cooling lubricants.  As return pumps, they transport the chips/cooling lubricant mixture to filters/separators. They then supply the machines again with the cleaned cooling lubricant. Thanks to their solid and robust design, the KNOLL coolant pumps have a high load capacity and a long durability.

Block Pumps

BS 32, BS 40, BS 50

Self priming KNOLL block pumps of the BS series are pumps which transport contaminated cooling lubricant with high air content. Thanks to the solid and robust design, KNOLL block pumps are extremely reliable and have a long durability.

Clean Coolant Pumps

TG 25, TG 40, TG 50

KNOLL clean coolant pumps TG are cooling lubricant pumps that convey slightly contaminated media. These pumps are able to supply machines with cleaned cooling lubricant (incl. residual dirt).

Dirt Coolant Pumps

TF 40, TF 50, TS 40, TSK 40, TSL 40, TSL 50, TSL 65

KNOLL dirt coolant pumps TF, TS, TSK and TSL are cooling lubricant pumps that convey very contaminated media. These pumps are able to transport the chip/cooling lubricant mixture to filters or separators.

Shredder Pumps

TSC 50, TSC 65

KNOLL shredder pumps TSC are cooling lubricant pumps with an integrated shredder for aluminum chips. These pumps are able to shred long aluminum chips into pump-appropriate size and to convey them to the central preparation station with the help of cooling lubricant. Therefore, an additional chip reducer is not necessary.

Please contact us for more information on KNOLL Centrifugal Pumps

KNOLL Case Study: Bosch Power Solutions, Homburg

Together with the Energy Management team from Bosch Power Solutions, Homburg, the team from KNOLL Maschinenbau, Bad Saulgau, installed high-pressure pumps with frequency converters in 50 machining centers to improve efficiency and power consumption. The pumps were equipped with frequency converters to supply the machines with cooling lubricant as needed. The energy savings are on average over 50 percent.

  • KNOLL KTS High Pressure Pump with Frequency Converter

 

Environmental protection, CO2 balance and energy efficiency are the top issues of our time, and industry is also concerned with them intensively. At KNOLL Maschinenbau, Bad Saulgau, they are given high priority in many ways: in the office building, in production, but also in the products, solutions and services offered. As a leading provider of pumps, filters and complete coolant systems, the company promotes the use of frequency-controlled high-pressure pumps for supplying coolant to machine tools – not only as initial equipment, but also as retrofits. In order to determine the energy savings that can be achieved during ongoing operation, KNOLL developed the so-called E-PASS around fifteen years ago. This measurement service and the associated conversion are now used by numerous metalworking companies.

Continue reading KNOLL Case Study: Bosch Power Solutions, Homburg

Cool Clean: CO2 Machine Tool Cooling Solution

Dry machining is essentially machining without the use of any cutting fluid or coolant. Dry machining is typically reserved for certain applications, and it may never completely replace the use of cutting fluids, but is becoming increasingly popular due to:

  • Operator Safety – Reducing fumes and splashing coolant
  • “Dry” may work better for certain metals (Ex. composites, plastics)
  • Eliminates messy work environments

Cool Clean has made significant advancements in dry machining with the ChilAire™ CO2 Machine Coolant Systems. The ChilAire™ offers the performance benefits of a liquid coolant and the environmental benefits of dry machining, all with great economics.

 

Dry Machining Features:

  • Benefits operations that must be “dry”
  • External and through tool cooling capability
  • Precision machining of plastics, PEEK, UHMW, etc.
  • Increases in tool life and tighter hole tolerances
  • Additional capability can be achieved with MQL for certain applications

The process is straightforward. CO2 spray is created through an expansion of liquid CO2 into solid CO2 crystals, or CO2 snow, that are delivered to the machining cutting zone. When the CO2 spray hits the cutting edge, the ice-crystals melt and flash back to CO2 gas in a process called sublimation – capable of absorbing significant amounts of heat. The ChilAire™ system keeps the tool and work piece at ambient temperature, hence preventing thermal shock. Further, by controlling the temperature of the cutting zone, customers can use lower cost cutting tools on applications that typically require expensive tools such as Cubic Boron Nitride (CBN), Ceramic, Polycrystalline Diamond (PCD), etc.

Benefits of the ChilAire™ are as follows:

  • Clean Operator Work Environment
  • No Splashing Coolant
  • Cutting Tool Does Not Experience Thermal Shock
  • Improved Economics
  • No Secondary Cleaning

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.