Mill Work Holders - 6: Other Types of Work Holders
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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.

Other types of work holders include (but are not limited to)

  • Collets: their main purpose is to work as a tool holder but they can effectively be used as a work holder (figure 1).
  • Chucks: typically used on the lathe, the chuck can also be an effective work holder on the mill. (figure 2).
  • Specialty fixture: designed for a specific work piece and unusable for other work pieces, the jig is typically used when high precision or high volume is necessary. The fixture shown is used to center and hold a round object against a rear stop plate (figure 3).
  • Modular fixturing: this method of holding the work piece is a variant of the specialty jig in the sense that the components used for the jig can typically be disassembled after the job is finished and reused in another arrangement for another job (figure 4).
  • Table clamping systems: Table clamps can be used to clamp almost any type of work piece. They are very simple and inexpensive. All you need is a clamp, a clamp support, and a stud with T nut. It is important to use as much of the clamping area as possible and to ensure a good position of the clamp. There are hundreds of designs, each of them with its own peculiar advantage. See the topic Mill Table Clamping Systems for more detail.

Figure 1
Figure 2
Figure 3
Figure 4
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label: Milling machine, work holding, clamps, regidity, precision, vise, alignment, edge finder, DRO, interchangable vise jaws, sanp jawa, collet, chuck, jogs, modular fixturing, table clamps