JP2557667Y2 - Indexable cutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throw-away cutter, and more particularly to a locator which is simplified.

[0002]

2. Description of the Related Art Conventionally, a throw-away cutter of this type has been disclosed in, for example, Japanese Utility Model Publication No.
As disclosed in Japanese Patent No. 132317, a locator is wedge-fitted in a mounting hole of a tool body, a throw-away tip is incorporated in a tip seat of the locator, and the throw-away tip is separated by a wedge different from the wedge. It is fixed. Further, as disclosed in Japanese Patent Publication No. 46-26386, for example, there is also known an apparatus in which a center mounting hole of a throw-away tip is used to directly fix an eccentric pin to a pocket of a tool body.

[0003]

[Problems to be solved by the invention] However, in the former two cutters, the locator is first installed in the mounting groove, and
Next, the precision of the edge position of the indexable insert is determined. Therefore, in order to increase the position of the cutting edge of the throw-away insert, there is a problem that the throw-away insert and the locator must be individually ranked and the combination thereof must maintain the accuracy.
Further, in the cutter which is directly fixed to the tool body by using the eccentric pin, there is a problem that the position of the cutting edge of the throw-away tip cannot be aligned with high precision because the positional accuracy of the pocket is difficult to obtain.

In view of the above, in the present invention, it is intended to simply maintain high accuracy by using a locator to which a throw-away tip is attached.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a throw-away tip is screwed into a tip seat of a locator using a center mounting hole thereof, and the locator is When assembling into the mounting groove, it is configured such that it is mounted on the basis of a locator to which the throw-away tip is mounted, and is wedge-stopped.

[0006]

According to the indexable cutter of the present invention, the accuracy is divided based on the locator on which the insert is mounted, and the precision is assembled into the mounting groove of the tool body and is fixed by a wedge. Therefore, only one criterion is required for maintaining the accuracy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a throwaway cutter according to the present invention will be described below with reference to the drawings.

1 to 4, reference numeral 1 denotes a cutter body having a center mounting hole 2, and a locator 3, a throw-away tip 4, and a mounting groove 6 for receiving a wedge 5 are formed on an outer peripheral portion of the cutter body 1. Is provided.

The locator 3 has a tip seat 7 in which the indexable tip 4 having a center mounting hole 8 is fixed by a set screw 9. And this throwaway tip 4
Is fixed in the mounting groove 6 by the wedge 5 having the tightening screw 10. Therefore, the locator 3 has no screwing in the mounting groove 6 as in the related art.

In the outer peripheral portion of the cutter body 1, an air hole 11 for chips is opened from a circumferential groove 12.

[0011]

According to the present invention, as described above, the locator 3 to which the throw-away tip 4 is screwed is used as a reference to determine the accuracy rank. Therefore, the accuracy of the cutting edge deflection of the throw-away insert incorporated in the cutter body 1 can be easily obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a throwaway cutter of the present invention.

FIG. 2 is a plan view.

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

FIG. 4 is a rear view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutter body 2 Center mounting hole 3 Locator 4 Indexable insert 5 Wedge 6 Mounting groove 7 Tip seat 8 Center mounting hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A throw-away cutter in which a locator 3 and a throw-away tip 4 are arranged in a mounting groove 6 of a cutter body 1 and fixed by a wedge 5 having a screw 10. 4 is screwed into the tip seat 7 of the locator 3 using the center mounting hole 8, and the locator 3 is mounted in the mounting groove 6.
Is based on locator 3 with indexable insert 4
Throw-away cutter incorporated, characterized in that it has to be attached, et al by the wedge 5