Floating platform (bed - table) for drill press - Why do you want one? Saving time making parts!!!
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- เผยแพร่เมื่อ 8 มิ.ย. 2020
- This is my design for a floating platform (or bed or table) for my drill press:
grabcad.com/library/floating-...
I have been using my drill press intensively to drill holes on wooden or aluminum brackets after making the parts r drill guides with my CNC machine. One thing that make the process easy is that when the drill bit rotate at high speed and the pieces were floating (not fixed to the drill press's platform), the drill bit will pull the pieces and self-center it-self to the hole. That way, the new holes are at exactly the same position as the guiding holes. I have been quite successful making all the nut housing from angled Aluminum for my CNC machine using this process. But when it comes to drill big holes on aluminum pieces, the piece will vibrate a lot and hard to hold on. The vise is too heavy for the piece to be floating and self-centered to bit.
To solve this problem, I designed a floating bed for my drill press so that the piece can be clamped to the platform but the platform can still float in the XY axis very easily.
In the end, the platform proved that the principle worked. I tested its function using a 10mm drill bit on a piece of Aluminum to chamfer a 4mm hole. The bit was perfectly centered to the hole and I got exactly the results that I wanted. - วิทยาศาสตร์และเทคโนโลยี
Ausome design, I have always had problems trying to drill a large hole over a smaller one and keep it centered. Now I know how. Thanks
Good tip to mill a smaller hole and then clean it up on the drill press. I would never have thought to do that.
Put a drill bit matching the size of the pilot hole in the chuck. With the drill off, lower the drill into the pilot hole to line up the material to be drilled, and then clamp the material. Then replace the drill bit with the proper sized bit (or do it in stages for a large hole). You are then able to accurately drill the larger hole with the same center. Although you will need to swap between 2 drill bits, so for a lot of holes it can be tedious, but it is accurate.
That's pretty much my process to drill big hole in some harder material than wood, aluminium for example. The holes usually milled a bit under sized on the cnc mill so I usually still need to clean with the drill press anyway. Putting the drill bit directly on the cnc machine doesn't work that well because the bit are long and they flex a bit when drilling and will require proper chuck for each drill bit size. Maybe short drill bit will work for the cnc machine.
I have had it spin around on me when I do that before. I expect it to happen if I drill a hard metal now so I have to stick a clamp on the side to catch it when it happens but really I just line it up the best I can then go for it because if it spins away from my hand the part will probably be useless and the clamp is just to prevent it from spinning out of control OR to prevent it from hitting the round metal sliding part to prevent dents. I just can't get with the just hold it down method if I am doing metal but wood it isn't nearly as bad.
What happens with the metal is the bit makes a shaving and it doesn't break off (could be a slightly too dull bit) and the bit grabs it on its next pass and the entire piece is forcibly spun out of your hands since there was no kung-fu grip of death on it.
Hand holding metal pieces only work with small bits for me. starting around 6mm bits, things started shaking up. 10mm bit is impossible on aluminum. With wooden pieces, the bit got caught sometimes if I wasn't pressing hard enough. That's why I thought of this type of platform. At least I feel a lot safer now with the piece clamped down with C-clamps.
@@minhsmancave9448 I just use those Irwin clamps that has the trigger to hold mine but I make sure the bit is in place several times before I do it. I like your idea there as it is better than just trying to hold on to the sucker for sure (especially if your DP is running around 600rpm or more).
You could have done this th-cam.com/video/YzpvS9Ve-bw/w-d-xo.html through a workflow (FR) Salut Minh! C'est le genre d'aide qu'on doit posséder une fois pour toutes et très pratique comme tu l'as démontré. Beau travail!