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2. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   The R8 system is commonly used with collets ranging in size from 1 ⁄ 8 ″ to 3 ⁄ 4 ″ in diameter or tool holders with the same or slightly larger diameters. The collets or tool holders are placed directly into the spindle and the drawbar is tightened into the top of the collet or tool holder from above the spindle.

3. Milling cutter - Wikipedia

   en.wikipedia.org/wiki/Milling_cutter

   The shell then screws onto the arbor just as old-style lathe chuck backplates screw onto the lathe's spindle nose. This method is commonly used on the 2" or 3" boring heads used on knee mills. As with the threaded-spindle-nose lathe chucks, this style of mounting requires that the cutter only make cuts in one rotary direction.

4. Metal lathe - Wikipedia

   en.wikipedia.org/wiki/Metal_lathe

   The tool bit is mounted in the toolpost (1) which may be of the American lantern style, traditional four-sided square style, or a quick-change style such as the multi-fix arrangement pictured. The advantage of a quick change set-up is to allow an unlimited number of tools to be used (up to the number of holders available) rather than being ...

5. Bridgeport (machine tool brand) - Wikipedia

   en.wikipedia.org/wiki/Bridgeport_(machine_tool...

   Machine tapers for tool holding included Morse tapers (on early models) and the R8 taper (a widely used standard that Bridgeport created) on most models. Both Morse and R8 allowed for both collets and solid holders, and a drill chuck could be held by either of the latter. Currently R8 and Erickson #30 Quick Change tool holders are available.

6. Turret lathe - Wikipedia

   en.wikipedia.org/wiki/Turret_lathe

   Hartness 3x36 flat turret lathe with cross-sliding head, equipped for bar work, 1910 [1]. A turret lathe is a form of metalworking lathe that is used for repetitive production of duplicate parts, which by the nature of their cutting process are usually interchangeable.

7. Tool bit - Wikipedia

   en.wikipedia.org/wiki/Tool_bit

   The toolpost is the part of a metalworking lathe which either holds the tool bit directly or holds a toolholder which contains the tool bit. There are a great variety of designs for toolposts (including basic toolposts, rocker toolposts, quick-change toolposts, and toolpost turrets) and toolholders (with varying geometry and features).