April 01, 2010

Knuth Machine Tools USA offers the Knuth Multi-Grind grinding machine for tool and die construction, mechanical production, design processes, laboratories and training. This effective and efficient grinding machine combines the functions of cylindrical, surface and tool grinding into one piece of equipment. The machine design makes it easy to grind tools including sharpening cutters and reamers as well as turning tools. Developed with a three-point bearing system to ensure minimum temperature effect and consistent grinding quality, the Multi-Grind is for heavy- to light-duty grinding jobs. Equipped with an easy-to-operate, three-speed grinding headstock, which allows for simultaneous setup of two different grinding wheels, this machine can be moved in transverse direction as well as vertically. It can also be rotated around the vertical axis making it highly flexibility for handling continuous and precise grinding cycles. Featuring hydraulic table feed drives with automatic change of direction, the Multi-Grind offers manually operated longitudinal feeds with hydraulic support to handle fast speeds up to 275 ipm. With a maximum grinding diameter of 8" and a maximum work piece length of 20", the Multi-Grind can handle internal spindle speeds of 13,500 rpm and external spindle speeds of 2,500 rpm. Built of solid cast-iron and weighing more than 2,800 lbs., the grinder is able to thoroughly minimize and absorb vibration, according to the company.

Related Glossary Terms

  • feed


    Rate of change of position of the tool as a whole, relative to the workpiece while cutting.

  • grinding


    Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

  • grinding machine

    grinding machine

    Powers a grinding wheel or other abrasive tool for the purpose of removing metal and finishing workpieces to close tolerances. Provides smooth, square, parallel and accurate workpiece surfaces. When ultrasmooth surfaces and finishes on the order of microns are required, lapping and honing machines (precision grinders that run abrasives with extremely fine, uniform grits) are used. In its “finishing” role, the grinder is perhaps the most widely used machine tool. Various styles are available: bench and pedestal grinders for sharpening lathe bits and drills; surface grinders for producing square, parallel, smooth and accurate parts; cylindrical and centerless grinders; center-hole grinders; form grinders; facemill and endmill grinders; gear-cutting grinders; jig grinders; abrasive belt (backstand, swing-frame, belt-roll) grinders; tool and cutter grinders for sharpening and resharpening cutting tools; carbide grinders; hand-held die grinders; and abrasive cutoff saws.

  • inches per minute ( ipm)

    inches per minute ( ipm)

    Value that refers to how far the workpiece or cutter advances linearly in 1 minute, defined as: ipm = ipt 5 number of effective teeth 5 rpm. Also known as the table feed or machine feed.

  • turning


    Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.


Vargus, a global leader in threading, grooving, and deburring solutions, proudly introduces the FS…

The 30-tool magazine provides flexibility for milling and drilling applications. The machine…

ARIA’s Standard Base option is designed for various industry applications where flexibility and…