Small
parts cut-off has historically been done on automatic production band saw machines
or cold saw machines utilizing HSS circular saw blades. Plate sawing and large
diameter billet sawing, however, were generally performed on cold saws designed
to use Carbide Tipped Circular Saw blades. While cutting rates were superior to
band and HSS circular sawing, the kerf loss from the carbide tool was excessive,
typically in excess of .300". This excessiveness material loss, combined with
the substantial machine cost made this type of sawing unjustifiable for high volume
sawing of small parts.With this background, the following comments related to
band sawing as well as CT Cold Sawing of small parts should be considered.
BAND
SAWING
In order o achieve any degree of sawing efficiency, small parts
are typically cut by layering or bundling the bars or raw material. The idea behind
this is the band saw blades cuts more efficiently in terms of cutting rate with
the greater width (or longer chip path) without a serious degradation in surface
quality. In order to accomplish this technique, several things had to be addressed
in terms of band sawing. In addition, the vise surfaces are faced with a replaceable
UHMW material to absorb the variances in raw material tolerances and help prevent
round parts from spinning from the pressures of chip taking. Finally, with the
introduction of wider blades and higher blade tension, the band saw was ready
to begin small parts sawing more efficiently than it was ever has in the past.
Tsune Cold Sawing System
Many of the obstacles encountered with Carbide Tipped Sawing have been virtually
eliminated with the introduction of the Tsune Carbide Tipped Cold Sawing System.
The Tsune utilizes thin kerf, small diameter, throwaway carbide tipped circular
saws. As a result, the size of the machine and horse [power requirements are also
a fraction of what might have been required on such machine as the Oliver, Ohler,
CCI and other carbide tipped cutoff saws of the past. Accordingly, the justification
process for the Carbide Tipped Cold Sawing small parts has been changed dramatically
since: Saw & Specialty Corporation Comparative Production Model
