Carpentry machines are intended to process wood. These machines are usually powered by electric motors and are used extensively in woodworking for large production work.
Carpentry machines possess many advantages over hand tools.
- These machines help to reduce fatigue of carpentry.
- These machines are used for production work.
- These machines save time and are used for accurate work.
- They are used for variable job variety and more designs are possible.
Different machines are needed to save time and labor in carpentry work for various quick woodworking operations especially for turning and sawing purposes.
The general woodworking (carpentry) machines are
A woodturning lathe is shown in the figure which resembles roughly an engine lathe. It consists of a cast-iron bed, a headstock, tailstock, tool rest, live and dead centers and drawing mechanisms. the long wooden cylindrical jobs are held and rotated between the two centers. the tool is then fed against the job and the round symmetrical shape on the jobs is produced. Scrapping tools and turning gauges are generally used as turning tools on a woodworking table.
A circular saw is also called a table or bench saw which is used to perform various operations such as grooving, rebating, chamfering etc. It consists of a cast iron table, a circular cutting blade, cut-off guides, main motor, saw guide, elevating handwheel, tilting handwheel etc. The work is held on the table and moved against the circular saw to perform the quick and automatic sawing operation and other operations on wood as said above. The principal parts include the frame, arbor, table, blade, guides for taking cuts, guards, and fencing.
A bandsaw is generally used to cut the heavy logs to required lengths, cutting fine straight lines and curved work. It consists of a heavy cast bed, which acts as a support for the whole machine, a column, two-wheel pulleys, one at the top and the other at the bottom, an endless saw blade band, a smooth steel table, and guide assembly. It is manufactured in various sizes ranging from a little bench saw to a larger band sawmill.