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Related to Planer: planner, Thickness planer


(mechanical engineering)
A machine for the shaping of long, flat, or flat contoured surfaces by reciprocating the workpiece under a stationary single-point tool or tools.
(mining engineering)
A fixed-blade device for continuous longwall mining of narrow seams of friable coal; the machine is operated along the coal face, planing a narrow cut from the solid coal as it travels.



a metalcutting machine tool whose cutting tool is used to plane flat horizontal, vertical, and inclined surfaces of rectilinear generatrices. There are two basic types of planers: standard planers and shapers.

The principal motion of planers is reciprocal in a straight line. In shapers, the cutter is attached to a head and is reciprocated; in standard planers, the workpiece is mounted on the table, and the table reciprocates. Cutting is effected during the planing stroke, which is followed by a faster, return stroke, during which the cutter or workpiece returns to its original position. The stroke speeds remain constant in all standard planers and in shapers with hydraulic drive; they vary from zero to maximum speed and back to zero in shapers with mechanical drive. The feed motion is in a direction transverse to the direction of the strokes and is accomplished at the end of each return stroke. In shapers, the feed motion is imparted to the table with the attached workpiece; in standard planers, it is imparted to the cutter attached to the head.

Small and medium-size workpieces are worked on shapers. Standard planers are used to plane relatively large workpieces, several medium-size workpieces simultaneously, and workpieces with long, narrow surfaces, primarily in single-item and small-lot production. The use of planers in large-lot and mass production is not feasible because of the nature of the return stroke. In such manufacturing, planers are replaced with milling, broaching, and grinding machines.




References in periodicals archive ?
Our closest planer is often a size 4 or 3 from a stout rod," Heller says.
A traditional planer will always take a fixed cut on the bottom and finish the board, at the desired thickness, with the top head.
Nigel Planer, Claire Foy and Michael Kitchen star in Hacks
Eva will be utilising, amongst other equipment, a new Planer freezer to experiment with the cryo preservation of larger volumes of liver cells.
The planer produced a slight scalloped finish on the planks, and not the smooth one attained today.
Performing in the live show won't exclude him from appearing in the TV series at some point in the future, Planer hopes.
Doctor Who Live will feature stunts and illusions, and all the action will be overseen by Planer who will play the part of "intergalactic showman" Vorgenson.
The in-line moisture meter at the planer measures the moisture content of every board.
ACTOR Nigel Planer yesterday revealed his international hunt for the real Robert Louis Stevenson.
Two planer boards available to walleye fans this season are perfect fits for specific trolling situations.
The Planer Truth: A Brief History & Guide To Servicing Vintage Single Surface Roll Feed Planers (1850-1950)" by Dana Martin Batory is a 160-page compendium of illustrations and information drawn from diverse out-of-print texts and manuals, combined with expert commentary based upon 'hands-on' experience by the author and provide readers with a succinct historical overview of this machine beginning with its invention in 1828.