This lever-action collet clamp is on the workhead of a Studer RHU-450 grinder, but I am asking the question here because I am quite sure that several of the people who are active in this forum will be able to answer it.
This is what the clamp looks like:
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I understand how it clamps. You move the lever to the left. This pushes 16104 to the left. This spreads open the "hook arms" 22004 which rotate on their pins and lever against the spindle to push 16106 to the left. This pulls the drawbar to the left and tightens the collet.
My question is, "how is this meant to release/loosen the collet"? To release the collet it's not enough to release the drawbar tension, one must actively push the drawbar to the right. If I pull the lever to the right, then 16104 moves to the right. It engages the hook 22004 on the top right and pulls it to the right. So if the 22004 hook on the lower left is resting on the spindle, then the 22004 hook will just push on the spindle on the bottom left and not actively push the drawbar. Does this mean that when 16104 is pulled to the right, the 22004 hook on the left should rotate AWAY from the spindle (no longer touching the spindle) so that the rightwards force can be directed to 16106 and thus to the drawbar?
This is what the clamp looks like:
I understand how it clamps. You move the lever to the left. This pushes 16104 to the left. This spreads open the "hook arms" 22004 which rotate on their pins and lever against the spindle to push 16106 to the left. This pulls the drawbar to the left and tightens the collet.
My question is, "how is this meant to release/loosen the collet"? To release the collet it's not enough to release the drawbar tension, one must actively push the drawbar to the right. If I pull the lever to the right, then 16104 moves to the right. It engages the hook 22004 on the top right and pulls it to the right. So if the 22004 hook on the lower left is resting on the spindle, then the 22004 hook will just push on the spindle on the bottom left and not actively push the drawbar. Does this mean that when 16104 is pulled to the right, the 22004 hook on the left should rotate AWAY from the spindle (no longer touching the spindle) so that the rightwards force can be directed to 16106 and thus to the drawbar?