- If the saw blade and the saw are not correctly aligned to the table and the fence, then there is the possibility that a serious accident may occur such as violent kickbacks. An improperly aligned saw can also cause burning, splintering or chipping on the workpiece. Always read and follow all instructions and warnings contained on the machine, on the tool or the tool packaging, and in the operators manual for the machine.
- Before carrying out the following instructions, make sure that the starter switch is off and that the power is disconnected from the machine. Follow all company and OSHA procedures for “Equipment Power Lockout”.
- Mounting the the saw blade onto the table: We advise you to use precise measuring instruments when mounting the saw blade onto the arbor. Adjust the arbor to its maximum height. With the aid of the most precise measuring instrument at hand, verify that the saw blade is parallel to the miter gauge slots (Fig. 16). Adjust as needed. This step is necessary to obtain crosscuts with the maximum in quality finish and for setting up the fence for ripping.
- Positioning the fence for ripping: After you have positioned the saw blade so that it’s parallel to the miter gauge slots, you may proceed with setting the fence. The fence should be set in accordance with the instructions found in the operators manual for your machine. Machine manufacturers have recommended fence settings that if not followed could cause injury or death.
- The maximum RPM of a circular saw blade varies based on the diameter of the saw blade (table 1). Never exceed the maximum RPM on the blade. Doing so could result in serious injury, ury, or death.
- The saw blade’s projection (t) with respect to the work piece must be greater than the height of the blade’s tooth (fig. 18). Increase or decrease the projection of the saw blade to improve finish quality.
- The number of teeth cutting (the wood simultaneously) (fig. 19) must be between 3 or 4 for ripping and ideally 5 to 7 for crosscutting. With less than three teeth cutting, the saw blade begins to vibrate leading to an uneven cut. If you want to cut work pieces with increased thicknesses (T – fig. 21), but wish to maintain the same diameter saw blade, then use a blade with less teeth. If instead you want to cut work pieces with a reduced thickness, but also maintain the same diameter saw blade, then use a blade with more teeth.
- Rakers (Fig. 22) are carbide inserts that are brazed onto saw blades exclusively for cutting wood. They help keep a distance between the saw blade body and the work piece, in order to avoid friction and overheating which cause the blade to deform.
- On saw blades for multiripping machines the anti-kickback device is advised in cases where wood has loose knots and minimizes damage that may occur.
- The keyways do not allow blades for multiripping machines to rotate the arbor when working (Fig. 23).
- The pairing of blade and arbor with keyways is excellent in all cases where the keyways are the same (Fig. 23) or smaller then the blade slots (Fig. 24).
- You should avoid mounting a saw blade with 2 keyways on an arbor with 1 keyway slot, because the spindle will not be balanced. Custom bores and keyways for blades can be arranged.
- On multiripping saw blades, the thickness of the work piece (S) varies second to the diameter of the blade (0) and the minimum diameter (01) of the rakers (the rakers position may vary from blade to blade – Fig. 28).
- Shoulder blade ensures correct distribution of lateral forces created by crooked planks in heavy duty use. The shoulder blade must be the first blade on the guide side of the multiripping machine.
- Always use a shoulder blade with the set of multiripping blades (Fig. 27).
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Onsrud Cutting Tool Distributor in Chicago, Illinois. Designed for Maximum Speeds and Feed Rates while …