RK International Machine Tools will focus attention on its extensive grinding machine portfolio and the recently introduced Europa eturn VS range of manual lathes at MACH 2022.
In total seven machines will be on display with all but one under power. Grinding machines shown come from its long-term supplying partners Robbi, Perfect, Delta, and Jainnher, covering all aspects of abrasive machining through universal grinding, surface grinding, vertical spindle rotary table grinding and centreless grinding.
There will be two machines on show from Robbi – the Omicron 1000R conventional universal grinder and the company’s latest development, the Omicron T7 PLC universal grinder.
The Omicron 1000R is the smallest in the R-series with a between centre distance of 1,000mm (600mm available on the smallest R series model). Delivering high standards of precision, with roundness capabilities of 0.8µm and cylindricity from 2 to 6µmicron, its versatility and flexibility make it ideal for small batch production.
The Omicron conventional universal grinder is said to be the only western European produced machine of this type. The second machine – the Omicron T7 PLC – features the latest version of the company’s control system with touchscreen interaction allowing ease of programming for operations such as: wheelhead and table positioning; multiple diameters in the same cycle; semi-automatic grinding cycles, with auto stop of the wheel feed once the programmed diameter has been reached; automatic wheel dressing cycle with compensation of grinding dimensions; plus numerous other time-saving features.
The Perfect range of grinders will be represented by the new PFG-3060DT, a new to market range of touchscreen controlled surface grinders. With a table size of 300 by 600mm, spindle centre to table distance of 500mm and a 300kg maximum table load, the PFG-3060DT is a highly capable machine whose performance is enhanced through the use of a CP4 high-precision spindle and a fully-supported rail design for added precision and stability.
The easy to use control features multi-function grinding and dressing programs developed by Perfect to deliver optimum performance and grind quality. The Perfect PFG-400R rotary table surface grinder is representing the company’s R series of horizontal spindle, rotary table models.
Often referred to as a ring grinder, the spindle is a class P4 high precision angular contact bearing unit, giving runout accuracy of 2μm. Thanks to the spindle being a cartridge-type it is completely sealed and lubricated for extended service life.
The Perfect PFG-400R surface grinders on show will also feature full machine enclosure, a requirement that more and more UK customers are expecting from a grinding machine.
Representing the Delta range will be the LC500 vertical spindle, rotary table surface grinder. The LC500 can grind up to 500mm diameter and up to 205mm in height. While a manual machine as standard the LC500 can be equipped with Delta’s L11E automation system which allows micron-level feed increments to the vertical axis.
Additional features include canned cycles to automate certain functions such as material to removed, increment (minimum 0.001mm), number of spark arrestors, and number of table revs per increment. Once the cycle is complete, the wheelhead is retracted and the machine comes to a complete stop ready for part unloading.
Centreless grinding is showcased courtesy of the Jainnher JHC12S machine which allows through-feed and plunge grinding of components measuring up to 40mm diameter while holding micron level accuracies. Further enhancements to the grinding performance come from the servo motor driven regulating wheel which provides control of linear speeds for optimum grinding results. This kind of performance has already made the JHC12S popular with a number of UK customers.
RK International Machine Tools www.rk-int.com Hall 20, Stand 265
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