While making a hole in the workpiece, your drill bit must not wobble, or else runout may occur in the hole or your drill bit can also break.
And that is why we use a drilling holding device, so we can hold the drill bit properly during a drilling operation.
Types OfDrill Holding Device:
Three types of drilling holding devices are mainly used in most workshops.
1. Drill Chuck
2. Drill Sleeve
#1. Drill Chuck
A drill chuck is the most popular drill bit holding device in the world. You must have seen one of these in your workshops at least if not used one. But here is the truth: When you are working with shank-type drill bits, drill chuck is the holding device you should be using. Because most industrial workers are using it every day.
Now, to use the drill chuck, you have to fit it into the spindle of the drill machine.
Drill Chuck Design:
There are three main components in that drill chuck which you should know: jaws, nut ring, and key.
Most drill chucks commonly have three jaws, but some can have four also. But mostly 3 jaw chuck are used by people. And these jaws have in-built teeth inside them that strengthen their grip over the drill bit.
But when you fit the drill bit inside the chuck, you have to use the key to tighten the drill bit properly.
#2. Drill Sleeve
You should use a drill sleeve when you are working with taper shank drill bits. By using the sleeve, you can hold drill bits whose size is equal to the taper size of the spindle.
Drill Sleeve Design:
There is a standard taper hole inside the drill sleeve. You have to fit your taper shank drill bit in this hole, and then fit the sleeve into the spindle.
When you are working with a taper shank drill bit whose taper size is larger than the taper size of your spindle, you have to use a socket as your drill holding device.
#4. Bonus: Drill Drift
Here we need to talk about one last tool, which is not a holding device but still is very important for you to learn about. And that tool is called drill drift.
What is Drill Drift?
A drill drift is a wide steel plate that tapers to the width of the edge. Drill drift is used to remove the drill chuck, sleeve, socket, or taper shank drill bit from the spindle.
The taper angle of the drill drift is from 8° to 19°.
Okay, so that was all the information that you might want to know about drill holding devices. I hope you like it. Feel free to share this post... and... if you have any questions related to drilling machines.