Grinding - 9: Universal Tool and Cutter Grinder
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.

The universal tool and cutter grinder is used for almost any type of work required in the tool room. This machine is most often used to re-sharpen the different types of cutting tools found in the shop. It is not considered a very heavy-duty machine, so huge amounts of material removal should not be attempted at this machine.

The machine is equipped with four main components, the base, the wheel, the saddle and the table.

There are many attachments used on the universal cutter grinder. These attachments make it possible to perform various types of sharpening. The right and left tailback and detachable motor make setups the most challenging part of working in a tool room.

Tool grinding requires a very thorough understanding of the geometry of the tool being ground. The grinds found on each cutter are complex, to say the least. Each grind has a specific primary and secondary clearance angle for the type of material being cut.

An efficient tool grinder will work far in advance of the production curve, providing more than the required number of tools for each production requirement, as a fail safe in case something should break. Coordination of the tool room with the production team is critical.

Another important part of the universal cutter grinder is the type of grinding wheel that the grinder chooses to use in the grinding work to be performed. As this subject is quite detailed, it will be discussed in a different module of its own. (See Grinding Wheels).

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label: grinding, grinders, grinding whees, ID, OD, Universal, tool and cutter, surface grinder, feeding, coolant, centerless. lapping, polishing