What is a Planer Machine?
A planer machine is a type of metal working machine that uses linear relative motion (reciprocation) between the workpiece and a single-point cutting tool to cut the work piece.
A planer is very much similar to a shaper but there are some basic differences. A Planer Machine is larger and has moving workpiece, whereas in a shaper Machine cutting tool moves.
Working principle of Planer Machine
In a Planer Machine the job is fixed rigidly on the machine table. A single point cutting tool held properly in the tool post is mounted on the reciprocating ram.
The reciprocating motion of the ram is obtained by a quick return motion mechanism.
As the ram reciprocates, the tool cuts the material during its forward stroke.
In return stroke, there is no cutting action and this stroke is called the idle stroke.
Attributions: Duk. Own work assumed (based on copyright claims)., CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=331005
Applications of Planer machine
Below are some most common applications of planer machine.
- Cutting slots and grooves
- Generating accurate flat and curved surfaces
- Cutting at an angle and machining dovetails
Types of Planer Machines
Below are some common types of planer machines.
- Divided table planer
- Edge or plate planer
- Pit planer
- Open side planer
- Standard or Double housing planer
Below are some questions and answers related to Planer.
What is the difference between shaper and planer?
In a planer, workpiece reciprocates over the stationary cutting tool. Whereas in a shaper, the cutting tool reciprocates.
Who invented the planer Machine?
General Bentham invented planer.
Featured image attribution: By Andy Dingley (scanner) – Scan from Kennedy, Rankin (1912 edition of 1905 book.) The Book of Modern Engines and Power Generators, vol. VI, London: Caxton, Public Domain, https://commons.wikimedia.org/w/index.php?curid=7711013
Planer inventor: http://www.workerseducation.org/crutch/pamphlets/lumber/ch003.html