Band saw blade setter with up-set and down-set

A setter for setting the teeth of a band saw blade, the band saw blade having multiple teeth on one edge of the blade, the setter having a base member and a mechanical linkage configured to apply a set displacement to at least one tooth of the blade during a set operation, the setter also having a clamping linkage for clamping the band saw blade in the setter during the set operation, the mechanical linkage comprising;

• a first pivot on the base member, a first jaw pivotably mounted to the base member on the first pivot and extending to an upper portion above the first pivot and a lower portion below the first pivot, the lower portion having a first cam surface thereon;
• a second pivot on the base member, a second jaw pivotably mounted to the base member on the second pivot and extending to an upper portion above the second pivot and a lower portion below the second pivot, the lower portion having a second cam surface thereon;
• a third pivot on the base member below the first pivot and below the second pivot, and between the first jaw lower portion and the second jaw lower portion;
• a lever member pivotably mounted to the base member on the third pivot, the lever member having a first follower arm extending to one side of the third pivot and a second follower arm extending to the other side of the third pivot, the first follower arm having a first outer surface, and the second follower arm having a second outer surface, the lever member also having a lever handle extending to one side of the third pivot;
• at least one up-set tool bit configured to increase the set of the blade tooth, the up-set tool bit being affixed to the upper portion of the first jaw, the distance between the up-set tool bit and the blade tooth being adjustable by a first threaded member;
• wherein during the set operation, a rotation of the lever member forces the first outer surface of the first follower arm to contact the first cam surface on the first jaw, and forces the second outer surface of the second follower arm to contact the second cam surface on the second jaw;
• and
• forcing the lower portion of the of the first jaw and the lower portion of the second jaw to rotate outward away form the third pivot, forcing the upper portion of the first jaw and the upper portion of the second jaw to rotate inward toward the band saw blade, and forcing the at least one up-set tool bit to be driven toward the blade tooth of the clamped band saw blade.

A method for setting the teeth of a band saw blade, the band saw blade having multiple teeth on one edge of the blade, the teeth comprising cutting teeth and raker teeth, the method comprising the steps of:

• placing the band saw blade in a setter, the setter having a mechanical linkage configured to apply a set displacement to at least one cutting tooth of the blade during a set operation, the setter also having a clamping linkage for clamping the band saw blade in the setter during the set operation;
• the setter having at least one up-set tool bit configured to increase the set of the cutting tooth, the distance between the up-set tool bit and the cutting tooth being adjustable by a first threaded member, and the setter having at least one down-set tool bit configured to decrease the set of the cutting tooth, the distance between the down-set tool bit and the cutting tooth being adjustable by a second threaded member;
• adjusting the distance between the at least one down-setting tool bit and the cutting tooth via the second threaded member such that during a set operation, the down-set tool bit applies a first down-set displacement to the cutting tooth;
• applying a set operation to the blade, wherein the at least one down-set tool bit is driven toward the cutting tooth of the clamped band saw blade and applies the first down-set displacement to the cutting tooth;
• rotating the band saw blade within the setter and repeating the set operation until all cutting teeth of the band saw blade receive the first down-set displacement;
• adjusting the distance between the at least one down-setting tool bit and the cutting tooth via the second threaded member such that during a set operation, the down-set tool bit does not contact the cutting tooth;
• adjusting the distance between the at least one up-setting tool bit and the cutting tooth via the first threaded member such that during a set operation, the up-set tool bit applies a first up-set displacement to the cutting tooth;
• applying a set operation to the blade, wherein the at least one up-set tool bit is driven toward the cutting tooth of the clamped band saw blade and applies the first up-set displacement to the cutting tooth;
• rotating the band saw blade within the setter and repeating the set operation until all blade cutting teeth receive the first up-set displacement thereby setting the band saw blade.

A setter for setting the teeth of a band saw blade, the band saw blade having multiple teeth on one edge of the blade, the setter also having a clamping linkage for clamping the band saw blade in the setter during a set operation, the setter further comprising:

• at least one up-set tool bit configured to increase the set of a blade tooth, the distance between the up-set tool bit and the blade tooth being adjustable by a first threaded member;
• at least one down-set tool bit comprised of a non-ferrous material and configured to decrease the set of the blade tooth, the distance between the down-set tool bit and the blade tooth being adjustable by a second threaded member;
• a mechanical linkage configured to move the at least one up-set tool bit toward the blade tooth, and configured to move the at least one down-set tool bit toward the blade tooth during a set operation;
• wherein during the set operation, the clamping linkage clamps the blade within the setter, the at least one up-set tool bit is driven toward the blade tooth of the clamped band saw blade by the mechanical linkage, and the at least one down-set tool bit is driven toward the opposing side of the blade tooth of the clamped band saw blade by the mechanical linkage;
• and
• wherein the distance between the at least one up-set tool bit and the blade tooth is adjusted via the first threaded member such that during the set operation, the up-set tool bit applies a first up-set displacement to the blade tooth;
• and
• wherein the distance between the at least one down-setting tool bit and the blade tooth is adjusted via the second threaded member such that during the set operation, the down-set tool bit applies a first down-set displacement to the blade tooth.