Medical cutting tool manufacturing apparatus and method

Abstract

The invention provides a medical cutting tool manufacturing apparatus, which can form cutting blades to the top face with a simple structure, and a manufacturing method for the same are provided. The medical cutting tool manufacturing apparatus of the present invention, which manufactures a medical cutting tool such as a steel bar having a plurality of cutting blades at the tip of a working section, includes a main shaft, which includes a chuck that holds the steel bar in a freely detachable manner; a main shaft support, which holds the main shaft allowing change in a slant angle of the main shaft; an XY table, which freely moves the main shaft support in X and Y axis directions; and a rotatable disc whetstone, which forms the cutting blades in the working section of the medical cutting tool held by the chuck. The whetstone has a structure within the horizontal plane (XY plane).

Description

technical field [0001] The present invention relates to a dental cutting tool or a surgical drill with an inclined cutting edge at the working part of the front end of a carbon drill, a steel drill, a P-type root canal drill (Peeso reamer) or a G-type drill (Gates drill). A manufacturing technique of a medical cutting tool such as a needle, in particular, relates to a manufacturing device and a manufacturing method of a medical cutting tool suitable for forming a cutting edge at a working portion at the tip. Background technique [0002] Image 6 It is a figure explaining the conventional manufacturing apparatus and manufacturing method of manufacturing the medical cutting tool which has the inclined cutting edge in the working part of the front-end|tip, such as a steel drill. [0003] A steel drill 10 as a workpiece is held on a chuck 13 positioned at the front end of a spindle portion 12 fixed to a bed 11 of the processing machine. The inside of the main shaft part 12 has...

AI Technical Summary

Problems solved by technology

[0007] However, in order to move the rotating grindstone 16, a gap is required in the sliding part of the grindstone 16, and due to the gap, the grindstone 16 shakes, thereby reducing the precision of the cutting edge 10b.

This gap can be reduced by improving the manufacturing accuracy of the sliding part, but even if a slight gap occurs during the movement of the grindstone 16, it will cause rattling and affect the shape of the grinding cutting edge 10b, etc.

Especially since the diameter of the cutting edge 10b is as small as 0.5 to 2.35 mm, the small gap may cause Figure 7 The spherical shape shown produces a large deformation

[0008] In addition, if the linear movement is changed to a curved movement, there is a possibility that the clearance of the sliding part will be further increased, and it is difficult to form the correct cutting edge 10b.

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