[Newbie] 1st Rotary Table Use - Little Help Please

[RegisG]

Well I secured my small rotary table on my mill and tried a cut. I was turning pretty slow and steady but, part and table top kept jumping back as I went forward. I don't know if there is any backlash adjustment as there was absolutely no instructions or even diagrams with the table. I need to cut this 3/8" steel down 3/16" deep 3.17" diameter. I know that I'm using a bit that I over heated on a side cut and maybe that's part of the problem. I'm only taking 0.003 to get a feel for doing this. In the photo, I have the bit turning clockwise and I'm turning the part counterclockwise. Is that correct?






Appreciate any tips.
Regis

 

[Wreck™Wreck]

Many rotary tables employ a method of disengaging the worm so that the table may be rotated freely by hand, make sure that you do not have the worm mostly disengaged.
This often involves loosening a screw and rotating the entire hand wheel assembly.

On one that I have loosening the T Handle bolt and rotating the collar behind the handwheel does it.

 

[Andre]

Try lightly tensioning the RT table lock

 

[Wreck™Wreck]

Try lightly tensioning the RT table lock

Not really needed with an adjustable worm drive as opposed to a linear threaded lead screw, all backlash can be removed with a flick of the wrist.

 

[RegisG]

Well, I have found that my table will move back and forth slightly with the handle held in place. But, I don't understand why it would kick back as I rotate it steadily forward. The is one knob that locks the table. There is another that seems to do nothing.... Wishing there was some kind of manual on the Grizzly table. I called them and they sent me a table for the indexes but that's all.

Regis

 

[Wreck™Wreck]

Go here
http://www.littlemachineshop.com/instructions/rotarytable.pdf

Not a place for industrial equipment yet an excellent resource for hobbyists.

 

[kd4gij]

Look at page 13 of this. It is for there 6" but your picture looks like the adjustment is the same. Also in your pictures it looks like the endmill is discolored from over heat .
http://cdn1.grizzly.com/manuals/h7527_m.pdf

 

[higgite]

... I was turning pretty slow and steady but, part and table top kept jumping back as I went forward. ..... In the photo, I have the bit turning clockwise and I'm turning the part counterclockwise. Is that correct?
Appreciate any tips.
Regis

Have you tried turning the part clockwise?

Tom

 

[dlane]

Mill tip looks like it got hot, I use my cordless motor to turn the RT, smooth cuts,

 

[RegisG]

Appreciate the helpful info. Got a PM (to not embarrass me online) but, I want to share with other new folks. Besides the bit, I only had 2 T-bolts with small spacers holding the part. Nothing else under it to stabilize it.
Learning, learning, learning
Thanks,
Regis