Backing Bar Cutting Fixture
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The BBC Backing Bar Cutting Fixture
is used to remove excess backing bar material from face, root, or side
bend specimens taken from 3/8 to 1 inch thick plate samples. This fixture is not mounted on the BSC-IB, but held in the saw
vise as shown in the photo. The BBC can be inserted in or removed from the saw by the operator without the aid of a hoist. The BSC-IB indexer base and attached plate fixture can remain in place without affecting the operation of the BBC. However, to use the BSC-IB and plate fixtures, the BBC must first be removed from the vise. The vise pressure is released and the fixture is withdrawn. This allows the saw blade to pass through the vise area on its way to the plate fixture at the front of the table. The BBC can remain on the saw table until it is needed again. There is a reference stop that controls the location of the BBC relative to the blade. This is set initially for first use and for different thicknesses or variations of thickness from one batch to the next. The stop allows the fixture to be quickly reinserted into the vise with no further adjustments when running specimens of the same thickness. The fixture is intended primarily for 3/8 inch thick root and face bend specimens and 1 inch thick side bend specimens. However, other side bend specimens less than 1 inch thick can also be processed by using shims in the clamps. The clamp supports have two positions; one for 3/8 inch thick specimens and one for thicker specimens. Another adjustable reference stop is provided to compensate for variations in backing bar thickness. This stop can also be used to adjust how close the blade cuts relative to the base material. Operation of the fixture requires two steps; loading the specimen and clamping the specimen. The clamps slide out of the way for loading. They are also spring-loaded so that clamping can be accomplished by one hand while positioning the specimen with the other. Typical cutting time is typically 1 minute or less per bend specimen. Clamping time is 20-30 seconds. There are no optional accessories required for the operations described here. Pricing |
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