How do I adjust the scoring blade?

Operation
Geometry of a scoring cut

The scoring and separating cut made on a plastic laminated panel is as follows if a two-part scoring saw is used for the purpose of scoring.

Scoring saw blade

A variety of scoring saw blades are available from the trade. The choice of the right scoring saw blade is not only dependent on cutting tool mounting but also on the material to be cut and its application. STRIEBIG recommends two-part tungsten carbide scoring saw blades with which all the adjustment options of the entire scoring saw set can be fully exploited.

The scoring saw must have the following dimensions:

Nominal diameter – 80mm

Hole diameter – 20mm

Max. width – 3.6mm

Stated speed max. – 15,000 min or higher

In order to set the scoring saw blade, it is necessary to know the width of the scoring saw blade without any spacers (measure it with a vernier caliper). In addition, the tooth width of the main saw blade must be known as well as the amount by which the scoring saw edge must stand back from the panel edge.

This information is dependent on the cutting tool or the material although the scoring width is generally approx. 0.2 mm wider than the separation cut of the main saw. The width of the sco­ring saw blade is set by using the appropriate spacers in accordance with this information.

For example:

Main saw blade width: 3.2mm

Desired scoring width: 3.4mm

Scoring saw blade width excl. spacer: 2.8mm

Thickness of the spacers: 0.6mm

1 x0.3 mm, 1×0.2 mm and 1×0.1 mm spacers must be used from the existing set of spacers.

True running can only be achieved when the saw blade shaft, the clamping flange and the saw blade centre are perfectly clean.

The selection of spacers provided contains more spacers than are required to set the maximum permissible scoring width. The additional spacers are spare spacers in the event of one or more being damaged as a result of creasing, etc.

Operating elements

The scoring saw unit has the following operating elements:

1. Operating rod. This is used to move the scoring saw unit into its working position or its resting position. The scoring saw unit is moved from its working position to the resting position by pulling and slightly raising the ball grip on the operating rod. When moving from the resting position to the working position, guide the operating rod by holding the ball grip. Do not allow the scoring saw unit to be forced back into its working position by the pressure of the spring!

2. Centrlng the scoring saw blade. The screw used to set the scoring saw blade centring is located in the cover of the scoring saw unit and allows the blade to be aligned with the main saw blade. To do this, the saw unit must be swung into the horizontal position and the scoring saw unit must be in its working position. Dependent on the direction of rotation, the scoring saw blade shaft is displaced axially by approx. 0.6 mm per turn. The direction of rotation and the adjustment travel per turn of the key are given on stickers on the extraction hood.

3. Setting the scoring depth. This adjuster is fitted in the extraction hood. The adjustment screw can be accessed through a hole in the extraction hood baseplate. It can be operated independently of the cutting position of the saw unit. Dependent on the direction of rotation, the scoring depth is changed by approx. 0.8 mm per turn.

The direction of rotation and the adjustment travel per turn of the key are given on stickers on the extraction hood.