Source: https://patents.google.com/patent/US6695551
Timestamp: 2018-02-24 02:32:57
Document Index: 412867160

Matched Legal Cases: ['§119', 'Application No. 0003838', 'art 7', 'art 3', 'art 10', 'art 3', 'art 10', 'art 3', 'art 10', 'art 3', 'art 10', 'art 3', 'art 10', 'art 10', 'art 3', 'art 7', 'art 10']

US6695551B2 - Rotatable tool having a replaceable cutting tip secured by a dovetail coupling - Google Patents
Rotatable tool having a replaceable cutting tip secured by a dovetail coupling
US6695551B2
US6695551B2 US09983522 US98352201A US6695551B2 US 6695551 B2 US6695551 B2 US 6695551B2 US 09983522 US09983522 US 09983522 US 98352201 A US98352201 A US 98352201A US 6695551 B2 US6695551 B2 US 6695551B2
US09983522
US20020057951A1 (en )
Bengt Silver
This application claims priority under 35 U.S.C. §§119 and/or 365 to Patent Application No. 0003838-0 filed in Sweden on Oct. 24, 2000, the entire content of which is hereby incorporated by reference.
As is most clearly seen in FIG. 2, the cutting part 7 is connected to the tool part 3 by means of a dovetail coupling. In the embodiment illustrated in FIGS. 1-5, the dovetail coupling comprises a male dovetail coupling part 10, which constitutes an integrated part of the tool part 3. The male part 10 constitutes a projection having an extension in the longitudinal direction thereof, the extension occupying a major part of the diameter of the tool part 3, see FIG. 4. However, the left end in FIG. 4 of the male part 10 is displaced a distance from the periphery of the tool part 3. The significance of this design will be explained below in connection with the description of the function of the dovetail coupling. In a side view, see FIG. 2, the male part 10 has a generally circular shape with a connection portion 11 connecting to the tool part 3, which portion 11 has a smaller transverse dimension than the maximum transverse dimension of the cross-section. The male part 10 has, in the main, constant external dimensions along the entire longitudinal direction thereof. A first support surface 12 surrounds three sides of the male part 10. The first support surface 12 is planar and non-parallel relative to the longitudinal direction of the tool. Rather, when viewing the tool in a direction perpendicular to the axis of rotation, it can be seen that the surface 12 forms an obtuse angle a with a first, axially extending, center plane B—B of the tool part 3 and the cutting part 7, which center plane B—B extends perpendicularly to the paper in both FIGS. 3 and 4. Preferably, the angle a is of the order of 1000. A suitable range for the angle a is: 09°<α<120 °. A longitudinal center axis 14 of the male part 10 forms the corresponding angle a to the center plane B—B.
1. A rotatable tool comprising a rotatable tool body and a replaceable cutting tip for chip removing machining, the tool body defining a longitudinal axis of rotation and including a forward free end having a first dovetail coupling part formed therein, the cutting tip including a front cutting end and a rear mounting end, the mounting end including a second dovetail coupling part joined to the first dovetail coupling part in tightly clamped relationship, the cutting tip being removable from the tool body by sliding the second dovetail clamping part out of engagement with the first dovetail clamping part in a direction laterally of the axis of rotation, wherein one of the dovetail coupling parts includes a laterally facing stop surface against which the other dovetail coupling part abuts, to limit the extent of insertion of the cutting tip onto the tool body.
9. The tool according to claim 8 wherein the obtuse angle is no greater than about 120°.
15. The cutting tip according to claim 14 wherein the obtuse angle does not exceed about 120°.
B) sliding the second dovetail coupling part of the replacement cutting tip into engagement with the first dovetail coupling part in first direction laterally of the axis until laterally facing stop surfaces, formed by the dovetail projection and the dovetail groove, respectively, and intersected by the axis, abut one another in a manner preventing further movement of the cutting tip in the first direction.
17. The method according to claim 16 wherein the tool further comprises a manual actuator arranged for holding those first and second dovetail coupling parts in tightly clamped relationship with one another; the method further comprising:
prior to step A, the step of manipulating the actuator for loosening the tightly clamped relationship between the first dovetail coupling part and the second dovetail coupling part of the spent cutting tip; and
subsequent to step B, the step of manipulating the actuator for producing a tightly clamped relationship between the first dovetail coupling part and second dovetail coupling part of the replacement cutting tip.
US09983522 2000-10-24 2001-10-24 Rotatable tool having a replaceable cutting tip secured by a dovetail coupling Expired - Fee Related US6695551B2 (en)
SE0003838 2000-10-24
SE0003838-0 2000-10-24
US20020057951A1 true US20020057951A1 (en) 2002-05-16
US6695551B2 true US6695551B2 (en) 2004-02-24
ID=20281526
US09983522 Expired - Fee Related US6695551B2 (en) 2000-10-24 2001-10-24 Rotatable tool having a replaceable cutting tip secured by a dovetail coupling
US (1) US6695551B2 (en)
JP (1) JP3996506B2 (en)
KR (1) KR20030048071A (en)
CN (1) CN100388995C (en)
DE (1) DE60136839D1 (en)
EP (1) EP1328366B1 (en)
WO (1) WO2002034441A1 (en)
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US20020057951A1 (en) 2002-05-16 application
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SILVER, BENGT;REEL/FRAME:012487/0574