CK 300TH
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CK 300TH

Twin head PLC controlled  grinding machine for circular knives

The CK 300 TH machine is equipped with a double grinding head, for the simultaneous grinding of the bevels on both sides of the circular knife, reducing the processing times of this type of knife, and for a burr-free finish on the cutting edge.
The machine can also grinds knives with a bevel on only one side of the knife.
Grinding with emulsion coolant or neat oil, for sharpening of carbon steel, stainless steel, HSS, solid carbide, knives.
The programming of the machine is extremely simple, by panel PC with touch screen display, and operator interface with guided menu, for entering the working parameters and the operations of the processing.
The CK 300 TH machine is able to sharpen batches of knives of the same diameter.
The control system shows on the display the load current of the grinding wheel spindle motors, the time remaining at the end of the automatic cycle and the total time of the knife grinding process.
The CK 300 TH machine can be equipped with the teleservice program, if required.

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Description

Technical Data

Maximum knife diameter 350 mm
Bilateral bevel angle up to 90°
Unilateral bevel angle up to 45°
Grinding wheel diameter 125 mm
Grinding wheels speed 4400 rpm
Grinding wheel motors power 0,75 kW
Installed power 4,5 kVA
Weight 710 kg

Features

  • Cabin for full working area enclosure
  • Two grinding heads for grinding bilateral bevel knives at once, or unilateral bevel knives
  • Grinding with emulsion coolant or neat oil
  • Control board equipped with panel PC with 10” (16:9) touch screen display, and USB port for connection of mouse, keyboard, Wi-Fi adapter, flash drive
  • Easy adjustment for bevel angle
  • Lateral fine adjustment of the knife position for centering of the cutting edge
  • Quick assembly of circular knife
  • Joystick for manual displacement of the grinding slide, with potentiometer for speed adjustment
  • Ball rail guide of slides for increased accuracy and durability
  • Circular knife spindle with rotation speed digitally programmed and controlled
  • Centralized lubrication with manual pump
  • LED lamp for grinding area lighting
  • Interchangeable shaft, ISO 30 taper, to accommodate a suitable knife clamping system
  • Versatility, efficiency, and easy to operate
  • Low and simple maintenance

Standard Software

  • Windows® operative system, with graphic operator interface, menu guidance, machine diagnostic, historical data
  • Saving of 5000 working programs, and ability to export the saved working programs in a USB device, and to import working programs from a USB device
  • Working cycle for the grinding of bilateral or unilateral bevel knives, with free programming of total stock removal, roughing and finishing in-feeds, sparking out cycle, rotation speeds of the circular knife
  • Automatic cycle repetition, with automatic fast engagement, circular knife/ grinding wheel, and automatic starts of all motors, for grinding batches of unilateral bevel circular knives at a same diameter, bilateral bevel knives with the cutting edge centered with the knife body and at a same diameter if necessary, bottom knives at a same thickness
  • Rotation speed of the circular knife digitally programmable from 10 to 50 rpm for the removal cycle, and from 5 to 65 rpm for the sparking out cycle, and digitally controlled
  • User-defined calculation of the grinding slide stroke (total grinding removal), by the interactive graphic system, in the case of grinding of new bevels on a blank blade
  • Digital continuous control of grinding wheel spindle motors load current, with interactive ammeters, and selection of intervention if the maximum load current threshold is reached
  • All machine functions (start/stop motors, knife rotation speeds, alarms, etc.) are controlled by the PLC and the panel PC with touch screen display
  • Programming of a new working cycle during the automatic cycle
  • Indication of the time remaining to the end of the automatic cycle, and the total time of the automatic cycle
  • Automatic shutdown of all motors on completion of automatic cycle

Optional Equipment

  • Various types of coolant facilities and filtering systems
  • Various types of mist extraction units
  • Automatic centralized lubrication with programmable electropump

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