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, mandril
1. a spindle on which a workpiece is supported during machining operations
2. a shaft or arbor on which a machining tool is mounted
3. the driving spindle in the headstock of a lathe
4. Brit a miner's pick



an attachment on metalcutting machine tools for securing products to be worked or cutting tools with center holes. The simplest mandrels consist of a rod with center holes for attachment between the centers of a machine tool or a rod with a cone corresponding to the conical opening in the arbor of a machine tool. Various expanding mandrels are frequently also used.


The core around which continuous strands of impregnated reinforcement materials are wound to fabricate hollow objects made of composite materials.
(mechanical engineering)
A shaft inserted through a hole in a component to support the work during machining.
A metal bar serving as a core around which other metals are cast, forged, or extruded, forming a true central hole.

mandrel, mandril

1. A temporary internal support for a light-gauge metal shell during a pile-driving operation; takes the impact of the pile hammer during driving and is then withdrawn before concrete is placed in the shell; also called a pile core. 2. A cylindrical bar or spindle, used chiefly as a support during machining or forming operations.
References in periodicals archive ?
c] is the critical voltage in kV, H is the distance between the tip of the capillary needle and the collecting mandrel in cm, L is the length of the capillary needle in cm, R is the radius of the flow channel in cm, and [gamma] is the surface tension of the fluid in dynes [cm.
Using immovable cooled mandrels the ingots are produced with cavities of even bigger diameter.
With the CRC-Evans Pneumatic self-centering, wedge-type mandrel, no time was wasted.
The mandrels are split at the stabilizer centerline to facilitate extraction after molding.
The thick-walled hollow body, with a cylindrical mandrel inside it, is guided towards the pilger rolls.
The technology--the vacuum-steam-vacuum (VSV) process--involves using equipment that includes a mandrel to apply vacuum and steam to a product.
The major component was the gearmotor supporting the mandrel.
In this investigation, a number of composites were fabricated using different mandrel materials that served as moisture sources for carbamate formation during the cure process.
A line of medical-grade, precision polytetrafluoroethylene (PTFE)coated stainless steel or nitinol-forming mandrels used to make stent delivery systems is available from Applied Plastics Co.
BEX's largest hybrid die so far is for 800-mm, four-layer pipe, using its special VSI spiral-mandrel/lattice-basket die for the HMW-PE core and three spiral mandrels for layers of PP coatings.
Boeing is adapting the technique to produce fuselage sections on specially designed mandrels assembled with slats of Invar, an iron-nickel alloy with low thermal-distortion properties that maintains profile tolerances to thousandths of an inch.
CRC-Evans was named to provide pipe bending machines with sets and mandrels from Larsen & Troubo, Gammon and Essar companies.