/man"dreuhl/, n. Mach.
1. a shaft or bar the end of which is inserted into a workpiece to hold it during machining.
2. a spindle on which a circular saw or grinding wheel rotates.
3. the driving spindle in the headstock of a lathe.
Also, mandril.
[1510-20; perh. akin to F mandrin]

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      cylinder, usually steel, used to support a partly machined workpiece while it is being finished, or as a core around which parts may be bent or other material forged or molded. As a support during machining, the mandrel is usually slightly tapered so that when firmly pressed into a previously machined hole, a strong frictional grip between the mandrel and the wall of the hole is effected. The mandrel is mounted on fixed centres that fit in tapered holes in the ends of the mandrel, and it is rotated by an attachment driven either continuously from a power source when cylindrical surfaces are being cut on the workpiece or intermittently by hand when longitudinal grooves are being cut. To accommodate a larger range of hole sizes, a hollow expanding mandrel, having longitudinal slots and capable of expansion by a tapered plug, can be used.

      In manufacturing coiled helical spring, the spring wire is wrapped around a mandrel that serves as a support; when seamless tubing is being extruded, a long mandrel forms the internal diameter.

      Tool-carrying shafts are usually known as arbors, but the words mandrel and arbor are frequently used interchangeably.

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Universalium. 2010.

Look at other dictionaries:

  • Mandrel — Man drel, n. [F. mandrin, prob. through (assumed) LL. mamphurinum, fr. L. mamphur a bow drill.] (Mach.) (a) A bar of metal inserted in the work to shape it, or to hold it, as in a lathe, during the process of manufacture; an arbor. (b) The live… …   The Collaborative International Dictionary of English

  • Mandrel — Mandrel. См. Оправка. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • mandrel — miner s pick, 1510s, of unknown origin; perhaps borrowed from Fr. mandrin, itself of unknown origin. Also applied from 17c. to parts of a lathe or a circular saw …   Etymology dictionary

  • mandrel — ► NOUN 1) a shaft or spindle in a lathe to which work is fixed while being turned. 2) a cylindrical rod round which metal or other material is forged or shaped. ORIGIN of unknown origin …   English terms dictionary

  • mandrel — or mandril [man′drəl] n. [earlier manderil; prob. < Fr mandrin < Prov mandre, spindle, winch, beam (of a balance) < L mamphur, a bow drill < IE base * menth , to twirl > ON mọndull, handle of a quern] 1. a metal spindle or bar,… …   English World dictionary

  • Mandrel — For other uses, see Mandrel (disambiguation). Not to be confused with Mandrill (the primate species). Old shop made mandrel for turning hollow objects on an engine lathe …   Wikipedia

  • mandrel — mandril mandril n. any of various shafts that rotate or serve as axes for larger rotating parts. [Written also {manderil} and {mandrel}.] Syn: spindle, mandrel, arbor. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • mandrel — noun /ˈmæn.drəl/ a) An object used to shape material being worked. This socket forms the starting point of the piercing operation, enabling the mandrel to center itself on the work. b) A tool component that grips or clamps materials to be… …   Wiktionary

  • mandrel — also mandril noun Etymology: Medieval Latin maundrellus, probably ultimately from Old Occitan mandre kingpin Date: 1554 1. a. a usually tapered or cylindrical axle, spindle, or arbor inserted into a hole in a piece of work to support it during… …   New Collegiate Dictionary

  • Mandrel — Оправка; Шпиндель …   Краткий толковый словарь по полиграфии

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