How Machinists Benefit from a Fine Grind


There are different types of fine grind systems and one of these is the vertical grinding system. In a vertical grinding system, the work piece will be held upright in a rotary chuck with the presence of a grinding spindle overhead. This particular configuration can improve the roundness, facilitate single-setup processing as well as prolong the life of the machinery. Loading and unloading will get easier eventually. The work pieces with relatively large diameters and short lengths benefit greatly from the vertical grinding.

Today, most people are now used to various machine tool configurations which break from the normal as well as the conventional. Every new way of arranging the axes or orienting the cutting tool as well as work piece will cause people to rethink about the basics of metal cutting and in discovering new options in order to produce parts more effectively and efficiently. Vertical grinding is considered to be a case in point. Vertical grinding as according to its name, fixtures the work piece on a particular rotary chuck in the base of the machinery, similar to the work piece orientation in a vertical lathe. The fine grind spindle also travels up and down and then side to side from above the fine grind work piece.

Recently, one of the main proponents in the vertical grinding is Taiyo Koki, builder of grinding machineries hailing from Naoka, Japan. The company is now considered a unit of Mori Seiki and it has been taking more active position in North American market for grinders. Taiyo Koki manufactures different types of grinders and is noted for its various models based on the principle of vertical grinding. The distinguishing characteristic of these grinders from the structural viewpoint is that the grinding spindle as well as the work piece is being installed vertically rather than installing it horizontally. The grinding wheel head is then controlled simultaneously in the horizontal axis and along the vertical axis. The strength of these machineries is in the grinding of round shapes.

Here are some of the special merits of vertical grinding.

  • Better roundness and less distortion. On a vertical grinder, the work piece is placed upright in the chuck. On the other hand, on a horizontal fine grinder, the clamping force will be required to keep the work piece from falling off the chuck. A vertically clamped work piece will also require enough clamping force in order to resist the grinding forces. Gravity will work in favor the vertical grinding process.
  • Finished in One Chucking. The vertical grinder is able to do ID, OD and even face grinding. Depending on the shape of the work piece, all of the three processes can be applied in a single chucking. When this is possible, it will avoid error caused by different chucking. Circularity between the OD and ID and the squareness of the OD and ID to the face can also be maintained more accurately with the use of the vertical grinding system.
  • Ergonomics. The vertical grinder is much easier to load and unload.
By valariearthur

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