Back to Home Page of CD3WD Project or Back to list of CD3WD Publications

		Driling, Countersinking and Counterboring - Course: Technique for manual working of materials. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 18 p.)
			(introduction...)
			1. Purpose of drilling
			2. Machines for drilling
			3. Tools for metal drilling
			4. The operation of drilling
			5. Setting of the tools
			6. Clamping of the tools
			7. Clamping of the workpieces
			8. Technological process of drilling
			9. Purpose and application of counterboring/countersinking
			10. Labour safety recommendations

6. Clamping of the tools

According to the size of the drills (type of the shank), the drills are clamped in a three-jaw chuck or in taper sleeve collets. In mass production, quick-change chucks are often used for the drilling machines, which enables the drill to be changed with the machine running.

Figure 12 - Tool holding fixtures

1 - taper sleeve
2 - Three-jaw drill chuck

What clamping possibilities are there for:

1. Tools with cylindrical shank
2. Tools with taper shank?
1. _______________________________
2. _______________________________