Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...
Patent
1987-12-23
1989-06-27
Bishop, Steven C.
Gear cutting, milling, or planing
Milling
With regulation of operation by templet, card, or other...
409100, 409101, 409103, 409104, 409111, 409114, 409127, 409129, B23C 118, B23Q 3300, B23Q 3518
Patent
active
048424544
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a method and an arrangement for the production of insert bodies for the artificial rebuilding of teeth and human limbs or equivalent three-dimensional bodies having external contours with different individual characteristic features. The arrangement can also be used in conjunction with supplementary, previously disclosed equipment in order to produce internal contours with characteristic features.
BACKGROUND
The production of metal supporting bodies, for example, for dental crowns, has until now been performed manually by skilled craftsmen. The dentist has used previously disclosed techniques to produce a desired cast impression of the residue(s) of the tooth concerned, whereupon a dental technician has used the cast impression to complete the production process by mechanical means. This previously disclosed procedure was possible provided that castable materials, such as gold, were used for the metal supporting bodies.
The desire to use other materials or alloys in the production of bodies of this exists for a variety of reasons. It can be mentioned by way of example, a need to produce metal supporting bodies for dental crowns and supporting bodies for limbs and the like in titanium and other hard materials or alloys.
The production of insert bodies in hard materials is costly to execute due to the fact that each insert body has its own characteristic shape which must be reproduced with comparatively high accuracy.
It is also difficult to solve the problem of the efficient production of insert bodies with individual shapes at relatively low cost.
The present invention has as its object amongst other things to propose an arrangement for the efficient production of bodies of the kind referred to above. In the method according to the present invention, a replica of a body which is to be produced is secured to a first element which, together with a second element, forms part of a first pair of elements. A blank from which the body is to be produced is secured to the second element. The first and second elements are caused to rotate in such a way that the replica and the blank rotate about the axis of rotation of the respective elements. The first pair of elements and a second pair of elements are displaced relative to one another. The second pair of elements contains a third element which supports a sensing device and which is capable of interacting with the external contour of the replica. The second pair of elements also contains a fourth element which supports a tool by means of which the blank is capable of being worked. The fourth element is controlled by the third element in such a way that the tool executes movements which correspond to the shape of the external contour of the replica sensed by the sensing device. The new arrangement is characterized essentially in that, amongst other things, in a pair of co-rotating elements, a first element is so arranged as to support a replica (a cast impression) of a body which is to be produced, and a second element is so arranged as to support a blank form which the body is to be produced, in such a way that the replica and the blank are caused to rotate about the axis of rotation of the respective elements. In a second pair of elements, a third element supports a sensing device which interacts with the external contour of the replica, and a fourth element is so arranged as to support a tool by means of which the blank is capable of being worked. According to further features, the first and second pairs of elements are displaceable relative to one another, and the fourth element is controlled by the third element in such a way that the tool executes movements which correspond to the shape of the external contour of the replica sensed by the sensing device.
According to one embodiment of the present invention the sensing device includes a longitudinally displaceable component part which, through a servo system, provides control of the fourth element and thus of a tool which is capable of interacting
REFERENCES:
patent: 2330566 (1943-09-01), Edmonds et al.
patent: 2539027 (1951-01-01), Marchant
patent: 2557876 (1951-06-01), Klema
patent: 3922950 (1975-12-01), Walter
Andersson Karl E. M.
Andersson Knut M. G.
Gustavsson Axel G. V.
LandOfFree
Method and an arrangement for the preparation of insert bodies f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and an arrangement for the preparation of insert bodies f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an arrangement for the preparation of insert bodies f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-809021