Joinery Production ~ this can vary from the flow production where
one product such as flush doors is being made usually with the aid
of purpose designed and built machines, to batch production where
a limited number of similar items are being made with the aid of
conventional woodworking machines. Purpose made joinery is very
often largely hand made with a limited use of machines and is
considered when special and/or high class joinery components are
required.
Woodworking Machines ~ except for the portable electric tools
such as drills, routers, jigsaws and sanders most woodworking
machines need to be fixed to a solid base and connected to an
extractor system to extract and collect the sawdust and chippings
produced by the machines.
Saws † basically three formats are available, namely the circular,
cross cut and band saws. Circular are general purpose saws and
usually have tungsten carbide tipped teeth with feed rates of up to
60„000 per minute. Cross cut saws usually have a long bench to
support the timber, the saw being mounted on a radial arm
enabling the circular saw to be drawn across the timber to be cut.
Band saws consist of an endless thin band or blade with saw teeth
and a table on which to support the timber and are generally used
for curved work.
Planers † most of these machines are combined planers and
thicknessers, the timber being passed over the table surface for
planning and the table or bed for thicknessing. The planer has a
guide fence which can be tilted for angle planning and usually the
rear bed can be lowered for rebating operations. The same
rotating cutter block is used for all operations. Planing speeds are
dependent upon the operator since it is a hand fed operation
whereas thicknessing is mechanically fed with a feed speed range of
6„000 to 20„000 per minute. Maximum planing depth is usually
10 mm per passing.
Morticing Machines † these are used to cut mortices up to 25 mm
wide and can be either a chisel or chain morticer. The former
consists of a hollow chisel containing a bit or auger whereas the
latter has an endless chain cutter.
Tenoning Machines † these machines with their rotary cutter
blocks can be set to form tenon and scribe. In most cases they can
also be set for trenching, grooving and cross cutting.
Spindle Moulder † this machine has a horizontally rotating cutter
block into which standard or purpose made cutters are fixed to
reproduce a moulding on timber passed across the cutter.Joinery Production