Knife grinder - Knives <1,000mm​

Super sharp knives are based on a philosophy deeply rooted in Japan.

Very fine wooden surfaces have been part of Japanese culture in all areas for decades.
The mechanical production of such fine wooden surfaces led to the development of high-quality knives in Japan and, from around 1970, also to the development of the SuperSurfacer from MARUNAKA.
In order to be able to grind such high-quality knives perfectly and precisely at the same time, MARUNAKA developed their knife grinder with a grinding head including a separate lapping head.
Consequently, MARUNAKA use this outstanding grinding technology worldwide since around 1975 for grinding and lapping the knives of our slicers.

Further knife grinders on Marunaka URL

Technical features

With the grinding head, the knife is first precisely grinded and the knife edge is then lapped with the lapping head in an additional process on a width of <0.5mm. In conjunction with our high-quality precision knife grinder, you get always highest quality of the sliced rigid foam surfaces. Furthermore, maximum sharpness, maximum durability and long-life time of your knives is guaranteed.
The access to the magnetic clamping table is ergonomically arranged so that all operations in connection with the grinding process can be carried out very precisely, conveniently and be carried out clearly. The visual control of the grinding / lapping is very convenient and clear. The grinding machines have an automatic magnet separator for safe separation of the metal chips and a combined sedimentation and cooling basin for the sediments produced by the grinding and lapping disc. Currently MARUNAKA offers / supplies such automatic grinding machines for grinding lengths up to 700 mm.
The grinder is always PLC controlled. Therefore, individual adjustment of the grinding and lapping process is granted at any time.

Grinding and lapping (honing) in one process (knifes <1,000mm​)! No further treatment required!

Knife Grinder - Knives >1,000mm

Precision automatic twin-head knife grinder for grinding and lapping knives

Super sharp knives are based on a philosophy deeply rooted in Japan

Very fine wooden surfaces have been part of Japanese culture in all areas for decades.
The mechanical production of such fine wooden surfaces led to the development of high-quality knives in Japan and, from around 1970, also to the development of the SuperSurfacer from MARUNAKA.
In order to be able to grind such high-quality knives perfectly and precisely at the same time, MARUNAKA developed their knife grinder with a grinding head including a separate lapping head.
Consequently, MARUNAKA use this outstanding grinding technology worldwide since around 1975 for grinding and lapping the knives of our slicers.

Technical features
With the grinding head, the knife is first precisely grinded and the knife edge is then lapped with the lapping head in an additional process on a width of <0.5 mm. In conjunction with our high-quality precision knife grinder, you get always highest quality of the sliced rigid foam surfaces. Furthermore, maximum sharpness, maximum durability and long-life time of your knives is guaranteed.
The access to the magnetic clamping table is ergonomically arranged so that all operations in connection with the grinding process can be carried out very precisely, conveniently and be carried out clearly. The visual control of the grinding / lapping is very convenient and clear. The grinding machines have an automatic magnet separator for safe separation of the metal chips and a combined sedimentation and cooling basin for the sediments produced by the grinding and lapping disc. Currently MARUNAKA offers such grinding machines for grinding lengths up to 2,000mm. The grinder is always PLC controlled. Therefore, individual adjustment of the grinding and lapping process is granted at any time.

Safety first! Our machines are approved by German TUEV and therefore CE certified.

Rough grinding and lapping in one process (knives >1,000mm​)

Our unique special 3-head fully-automatic Carbide/HSS precision knife grinder

For more information see video at YT

Specification

  • Knife size (LxWxT):  max. 1800 x 200 x 15mm
  • Grinding wheel for HSS: Ø205 x 105mm
  • Grinding wheel for carbide: Ø150 x 60mm
  • Lapping wheel: Ø100 x 50mm (need to exchange for HSS or carbide)
  • Feed speed: 2~12 m/min.
  • Servo motors: Grinding wheel motor for HSS 4.0kW
                              Grinding wheel motor for carbide 2.5kW
                               Lapping wheel motor 1.5kW
                               Grinding head up/down motor 0.75kW each
                               Grinding head forward/backward motor 0.75kW 
                               Feed motor 1.5kW
                               Magnetic table angle indexing motor 1.3kW
  • Cooling pump motor: 180W
  • Swarf separator motor: 40W

Features

  • Precision 3-head knife grinder (grinding wheel for HSS, grinding wheel for carbide, lapping wheel) *Lapping wheel (stone) needs to be exchanged with a different stone for HSS and for carbide knife.
  • All movements are precisely controlled by servo motors.
  • Equipped with 2 type of height measuring devices.

   (1) Wheel (stone) height (thickness) measuring device

   (2) Knife height measuring device

 

Storch Industrie-Anlagen GmbH
Eilenau 123
GER 22089 Hamburg / Germany