Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO1995005920 - MACHINE D'AIGUISAGE POUR AIGUISER LES TRANCHANTS D'INSTRUMENTS TELS QUE DES INSTRUMENTS DENTAIRES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Patent claims
Shaφening machine for shaφening of cutting edges of instalments, e.g. dental instruments, and of a type provided with a rotable grinding disk mounted on a vertical axle, including an essential upwards turned grinding surface and a support sheet, against wliich the instrument can be supported without hinderance in a chosen angle in relation to the disk, when the cutting edge of the instrument is placed above the diagonal line of the grinding disk, while the instrument is in touch with the grinding part of the disk.

1. The apparatus according to Claim 1 is characterized by the fact that the axle of the grinding disk can be extended above the plane surface of the disk and form a support of the instrument, the longitudinal axle of the instrument being displaced radially away from the axis of rotation, and by the fact that moreover the grinding disk is designed with a grinding periphery, winch in an axial cut has a circular cross section with a radius that is shorter than the radius of curvature of the cutting edge of the instrument.

2. The apparatus according to Claim 2 is characterized by the fact that the support is foπned by a shaft extension, which decides the wedge angle by its diameter.

3. The apparatus according to Claim 3 is characterized by the fact that the shaft extension is mounted in the hub bore of the grinding disk in extension of a driving shaft.

4. The apparatus according to Claim 4 is characterized by the fact that the grinding disk and instrument support of any kind that are to be contaminated while being used and consequently has to be sterilized, can be mounted and dismounted using no tools or fastening device on the connection point.

5. The apparatus according to Claim 5 is characterized by the fact that the lower part of the hub bore of the grinding disk is conically divergent against the under side of the latter and constructed to cooperate with a complementarily designed end part of the driving shaft.

6. The apparatus according to Claim 6 is characterized by having a diagonal stop, wliich secures the reproduction ability by grinding of the outer cutting facet, when the handle of the instrument is placed in a chosen support point and at the same time is in touch with the diagonal stop.

7. The apparatus according to Claim 7 is characterized by the fact that the grinding disk is activated in the correct direction of rotation, when the handle of the instrument is placed in the support sheet, to avoid formation of burrs on the cutting edge.