ronan
Member
- Messages
- 11,399
Right, i bought a Bridgeport milling head about 18 months ago, from a member on here, to graft onto the Tom Senior mill i have. I found a guy who had done this on one of the model engineering forums, and basically copied what he did.
I cut the overarm back as it was too long, and bolted on an L-shaped bracket i made out of inch thick flat steel. When i had the bracket bolted on, i faced the end off using the horizontal spindle on the mill to get it square.
So the last few nights i have been bolting the head on and seeing how it is for squareness to the mill table. I trammed it first left to right, and get it set to zero using a dti in a collet in the spindle, then i swung it 90 degrees to see how it was fore and aft.
As you can see in the picture, when the clock is zeroed on the front, and then swung to the rear of the table its 0.02mm out (actually just under).
So opinions, would you try to get this to zero, which it should be ideally, or call it a day and accept it the way it is ? I could try scraping the joint between the adaptor (the circular piece behind the head with the arrows on) and the bracket to get it 100%.
I cut the overarm back as it was too long, and bolted on an L-shaped bracket i made out of inch thick flat steel. When i had the bracket bolted on, i faced the end off using the horizontal spindle on the mill to get it square.
So the last few nights i have been bolting the head on and seeing how it is for squareness to the mill table. I trammed it first left to right, and get it set to zero using a dti in a collet in the spindle, then i swung it 90 degrees to see how it was fore and aft.
As you can see in the picture, when the clock is zeroed on the front, and then swung to the rear of the table its 0.02mm out (actually just under).
So opinions, would you try to get this to zero, which it should be ideally, or call it a day and accept it the way it is ? I could try scraping the joint between the adaptor (the circular piece behind the head with the arrows on) and the bracket to get it 100%.