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  2. Speeds and feeds - Wikipedia

    en.wikipedia.org/wiki/Speeds_and_feeds

    Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

  3. Drill press - Wikipedia

    en.wikipedia.org/wiki/Drill_press

    Benchtop drill press (left) and floor-standing drill press (right) A drill press is a drilling machine suitable for quick and easy drilling of straight holes, countersinking or counterboring that are perpendicular to both directions of a table surface. In comparison, it is more difficult and less repeatable to drill perpendicularly with a hand ...

  4. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    High-speed steel (HSS) is a form of tool steel; HSS bits are hard and much more resistant to heat than high-carbon steel. They can be used to drill metal, hardwood, and most other materials at greater cutting speeds than carbon-steel bits, and have largely replaced carbon steels. Cobalt steel alloys are variations on high-speed steel that ...

  5. Tap and die - Wikipedia

    en.wikipedia.org/wiki/Tap_and_die

    US tap and drill bit size and reference chart [7] Machine screw size Number of threads per inch (TPI) Major diameter Minor diameter Tap drills Clearance drill 75% thread for aluminum, brass, & plastics 50% thread for steel, stainless, & iron Close fit Free fit Drill size Decimal equiv. Drill size Decimal equiv. Drill size Decimal equiv. Drill size

  6. Surface feet per minute - Wikipedia

    en.wikipedia.org/wiki/Surface_feet_per_minute

    It relates to spindle speed via variables such as cutter diameter (for rotating cutters) or workpiece diameter (for lathe work). SFM is a combination of diameter and the velocity ( RPM ) of the material measured in feet-per-minute as the spindle of a milling machine or lathe . 1 SFM equals 0.00508 surface meter per second (meter per second, or ...

  7. High-speed steel - Wikipedia

    en.wikipedia.org/wiki/High-speed_steel

    High-speed steel (HSS or HS) is a subset of tool steels, ... It is usually used to manufacture a variety of tools, such as drill bits, taps and reamers. 1.3343 is the ...

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  9. Machining - Wikipedia

    en.wikipedia.org/wiki/Machining

    A shaper often uses High Speed Steel tooling similar in shape and geometry to lathe tooling. Shaping is similar to turning, in a linear axis as opposed to a circular one. Shaping operations are performed using a shaper machine, that strokes back and forth, but cuts only in one direction. A clapper box is used to raise the tool up from the work ...