Setup Grinder Operation
Dinasaw® Bandsaw Sharpener
SET UP GRINDER:
Remove the Blade support frame and all telescopic arms and legs from box. Pre-Assemble the legs (#121,126,127) and fasten to the frame. Unwrap the machine and set it on the frame with the front side facing you. Sit the machine on the blade support frame and fasten it through the slots in the front plate using the two M6 x 10mm hex head screws supplied. Unwrap the power supply and bracket and fix to the front leg of the blade support frame. At this point it is important to screw in the Knob (76) on the amplitude slide at least 19mm (3/4") to ensure the grinding wheel, when fitted, will not touch the blade.
Once you have done that, install the grind stone (note left hand thread on grinding wheel retaining nut) with it’s more chamfered edge facing down. Insert the telescopic blade support arms into the "W" frame. Install the vertical blade support rods and in their extreme ends and tighten them in place with the 6 mm screws supplied.
Fit the plastic shield (115) to the cover (99) using 2 M5x10 pan head screws supplied.
GENERAL OPERATING DESCRIPTION:
The machine operates by two cams being turned on a common shaft. One cam operates the feed mechanism through an adjustable linkage, while the other oscillates the grinding head in unison. The timing of these operations produce the tooth shape.
The feed cam (6) is fixed to the camshaft which when rotated, moves the cam follower (33) whose movement is magnified through a translator arm (38) to reciprocate the feed block (45). This reciprocating action is transferred to the tooth picker (59) via a feed arm (52). The actual tooth position is determined with adjusting screw (46-47) so that it should place the face of the tooth to be ground immediately in front of the grinding wheel. It then returns into the gullet of the proceeding tooth and begins to move forward again. After the face has been ground, but just before the wheel has reached the bottom of it’s travel, the picker engages the face of the preceding tooth and begins moving the blade forward allowing the wheel to grind through the profile of the tooth. As the blade moves forward, the wheel at first travels down into the gullet and then rises up as the back of the tooth. After grinding the tooth back, the wheel continues it’s rise and clears the tooth. The picker continues pushing the tooth so as to place the front face of the next tooth under the grinding wheel to begin the cycle over.
The manual is set out under the following headings and should be understood before using the grinder.
(1) Fitting the blade to the sharpening machine.
(2) Feed pawl adjustments and Grinder feed speed.
(3) The grinding wheel maintenance.
(4) Centering the Grinding Wheel.
(5) Machine adjustments to follow tooth profile required.
(6) Bevel Tooth configuration. (Optional)
(7) Hi point Tooth configuration. (Optional)
(8) Maintenance.
Please note that ultimate tooth shape is a function of (2), (3) and (4) and alterations to any of these will modify tooth shape.
When first setting up bevel head machines it is recommended to disengage the beveling facility by removing the Idler Gear (B36) from engagement which is retained with a pan head screw through a slot in the rear plate. Turn the cam/gear (B23-B24) by hand until the cam follower (B27) rests at its central position with the head square. (See Bevel Head annexure)