Various Band Saw Blade Tooth Forms

Various Band Saw Blade Tooth Forms

Various Band Saw Blade Tooth Forms-

(i)Regular
(ii)Hook
(iii) Skip
(iv) Carbide insert.

-Regular or standard tooth form is used for all blades of 4 mm pitch. Such blades are most commonly used for all general purpose metal saving. The face of the tooth is straight to rake out chips.

-The hook form is used for blades of 4 mm pitch and coarser. Blades with hook form are ideal for cutting large sections of steel, non-ferrous metals, wood, and plastics. Teeth are designed with a positive rake which gives a cutting action of digging out full chips instead of scraping. The rounded gullets permit chips to clear with ease.

Band Saw Tooth Forms

-Skip tooth blades use the same rake and clearance angles as regular tooth blades, but the teeth are shorter and spaced farther apart. Thus, skip tooth design prevents clogging when cutting soft, sticky materials such as aluminium and magnesium.

-The teeth of the band saw blades are bent or offset slightly to the fight and to the left to provide clearance for the blade while cutting. This offset is called set. The common types of set on metal cutting band saw blades are the raker set and the wave set Fig. The raker set is recommended for cutting most contours.

The wave set is used wherever the work has a varying cross-sectional thickness and wherever one band saw blade must be used for a wide range of material sizes and, shapes. Pipe, angle iron, and other irregular structural shapes may be cut using a wave set blade.