Band saw blades
AssigneeHarrison Saw & Tool Limited
InventorAnthony Cookson
Life of this patent
Estimating the term…
Abstract
A method of automatically cutting a variable tooth pitch band saw blade from a bulk reel 40 of blade material 14 is achieved by using a cut to length machine 8. Blade material 14 from the bulk reel 40 is pulled on to a bed 42 of the machine 8. The blade material 14 is placed between rollers 50, which are powered and one of which is a metered roller 44 actuable to dispense a desired amount of the blade material. The cut to length machine 8 includes a cutting section 18 and an optical sensor 24, both connected to and controlled by a computer 46. The cutting section 18 comprises suitable cutting means, such as a mechanical cutter or laser cutter.
Claims15
A method of cutting toothed blades from a length of blade material comprises:
- a) locating the position of a first end of a first blade section and cutting the blade material at said position;
- b) locating the position of a second end of the first blade section relative to a tooth of the blade material using sensing means and storing said position in a memory means;
- c) advancing the blade material relative to the sensing means;
- d) locating the position of a first end of a second blade section relative to a tooth of the blade material using said sensing means and storing said position in the memory means;
- e) advancing said blade material to a cutting means and cutting the second end of the first blade section at the position stored in the memory means in step b) and cutting the first end of the second blade section at the position stored in the memory means in step d);
- and
- f) advancing the blade material to locate, store and then cut first and second ends of subsequent blade sections by repeating steps b) to e).
Apparatus for cutting toothed blades from a length of blade material comprises sensing means, memory means, blade advancing means and cutting means, in which, after location of a first end of a first blade section;
- the sensing means is actuable to locate the position of a second end of the first blade section relative to a tooth of the blade material and store said position in the memory means;
- the blade advancing means is actuable to advance said blade;
- the sensing means is actuable to locate the position of a first end of a second blade section relative to a tooth of the blade material and store said position in the memory means;
- and
- the blade advancing means is actuable to advance the blade material to the cutting means, which are actuable to cut the blade material at both the position of the second end of the first blade section stored in the memory means and the position of the first end of the second blade section stored in the memory means.
Dependencies are inferred from the claim text.