Example: Application in plunging tools This application seemed to be insoluble with the so far generally known tool concepts:   - deep face groovings with rotating tools also for   the smallest diameters - possibility to adjust the inside and outside diameter - possibility to apply the most different cutting grades   in one tool - optimal and secure clamping of the insert also in big   overhang lengths - internal coolant directly to the insert

Hollfelder made it its business to solve this problem and thus a precise and flexible tool system with universal applicational possibilities was born.

The design principle and its advantages:
 

	- a lateral location of the insert within the tool is not necessary
	thus trilateral machining is possible
	- little space requirement for the clamping claw and adjustment element
	high number of effective teeth increases the feed rate
	- independent from the depth of the recess the clamping of the inserts is absolutely secure
	which guarantees a vibration-free machining and thus constant tool life along with   an excellent surface finish.
	- the inserts are µm-accurate adjustable
	which makes the exact adaptation of the corresponding diameters possible and   at the same time a correction in the case of changing conditions.

Possibilities of application:

Due to the afore-mentioned advantages this Hollfelder tool system is absolutely essential e.g. in
the following machinings:

rotor clearance in pumps - e.g. oil pumps
plunging of deep grooves - e.g. pump housings for Diesel injection systems
snap ring groove recesses - e.g. for magnet industry
circular recesses - e.g. for shaft seals
Profile circular recesses - e.g. for conical nipples in piston bore holes
Axial plunging on lathes - e.g. for axial face grooving on end faces
Radial plunging on lathes - for all usual grooving operations

The shape and the profile of the necessary insert is designed according to the customers requirements. Due to its technical possibilities, Hollfelder is able to produce each desired contour on the insert in the most different cutting grades.