JPS59115105A - Cutting tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a holder, a tool element provided with a cutting tool and carried on the holder in a relatively unrotatable manner, and a fastener for fastening the tool element to the holder. It relates to a cutting tool consisting of.

Cutting tools of the above type are, for example, USP 4,270,42
This is disclosed in No. 2, but compared to a general conventional cutting tool in which the tool element and the holder are integrated into one piece B1,
It requires less space and reduces work costs.

It is an object of the present invention to provide an improved cutting tool of the upper i type in which the 'iA section of the tool element turns transversely to the holder.

This and other objects of the invention are achieved by the features specified in the claims.

The details of the invention are explained by the following examples with reference to the drawings.

In the figure, the cutting tool of the invention comprises a holding body IO. This holder 10 is fixed to the cutting tool in a known manner and comprises, for example, a longitudinal shaft fixed to the lathe, usually by screws. In another example,
This holder consists of a tool orientation element of the type of construction shown in EP 15248AA.

Tool element 11 is fastened to holder 10 by a fastener indicated generally at 12 . This tool element 11 is a cutting insert 13, for example USP 3,697.187
It carries a fine bore unit 14 with an insert of the type disclosed in .

The fastener 12 comprises a clamping member 23) which is attached to the holder 10 and moved transversely thereto.
] It is Noh. The clamping member 23 has a conical portion 25 which is inclined as it progresses in the axial direction of the clamping member 23 to thereby provide an inclined surface 24 . This inclined surface 24 is designed to cooperate with an inclined surface 26 of the operating member 19 which is movable in the longitudinal direction of the holding body 10. The movement of the clamping member 23 upwards in FIG. 2 causes the operating member 19 to move to the right in FIG. It is now possible to do so. The inclined surface 26 is formed in a conical bore 31, which is inclined along the direction of movement of the clamping member 23. This conical bore 31 has a larger diameter than the conical part 25, and this part 2
It is eccentric to 5. Circular portion 25 of clamp member 23
is formed between the cylindrical parts 27 and 28, and the cylindrical front part 2
8 has a smaller diameter than the rear part 27 of the cylinder. The cylindrical front part 28 has a threaded groove which cooperates with a corresponding threaded groove formed in the bore 29 of the holder 10. The cylindrical rear part 27 is slidably guided in the bore 30 of the holding body IO.
Due to the fact that the clamp member 23 is supported by the holder 10 at both ends 11111, even if a large forward fastening force is applied to the clamp member 23, the clamp member 23
According to the invention, the extension 20 of the actuating member 19 that projects towards the tool element 11 has a screw hole 38 . A coupling member 18 extending transversely to the holding body 10 is rotatably journalled on the tool element 11 and has a threaded portion 39 .
The cut-out portion of the screw is screwed into the screw hole 38 so as to work together with the screw hole 38. Thus, by rotating the coupling member 18 about its longitudinal axis, the tool element 11 is moved in the transverse direction of the holder 10.
and along the co-moving respective support surfaces 15 and 16 of the holder lO.

The coupling member 18 is received in the groove 40 of the tool element 11. A slot 32 is formed in the tool element in association with a groove 40, which slot is connected to a projection 33.34.
are provided on both opposite sides of the slot 32.
It is extended towards 0.

The tool element 11 is carried in a rotationally fixed manner on the holder 10 and is pushed against a support surface 16 by means of a coupling device, ie a fastener 12, thereby ensuring the correct axial positioning of the tool element 11. The protrusions 33, 34 and the coupling member 18 each have cam surfaces which, as the force increases, cause the protrusions 33,
34 cooperate in such a way that they are forced apart in opposite directions, thereby pressing the opposing abutment surfaces 41 , 42 of the tool element 11 against the support surfaces 36 , 37 of the holding body 10 . . Tool element 11 and holder 10 in the illustrated example
The relationship basically corresponds to that disclosed in US Pat. No. 4,270,422. This US patent is therefore referenced in Kikiri al.

The coupling member 18 is connected to the tool element 1 by means of a head 21 of this member and a locking song 43 provided in a groove of this member.
1 in the axial direction. Above mentioned 9, tool g
H11 is the support surface 1 that is supported by the rotation of the coupling member 18.
Move along 6. Head 2 of coupling member 18
1 is provided with display means for indicating the rotational position of this member 18 and thus the position of the tool element 11.

In the illustrated example, the coupling member 18 has two cylindrical portions 35 , 44 located at both ends of the threaded portion 39 .

Each of the cylindrical portions 35 , 44 is rotatably journalled in a groove 40 communicating with the slot 32 . The groove 40 and the cylindrical portion 35.44 have a circular cross section.

As mentioned above, the coupling member 18 moves back and forth in a limited manner in the longitudinal groove 40 of the holder lO! It is gllichono. i%#40 is an expandable shaft 45';
45'. These expandable shafts 4
5', 45', the coupling member 18 is connected to the holding body 10.
It locks into the recess when you move it towards the The expandable shirts 45', 45' are separated by a recess 46 which receives the front of the extension 20.

The above example is just one example of the present invention, and the present invention may take various modifications within the scope of the claims.

[Brief explanation of the drawing]

FIG. 1 is a partially cross-sectional side view showing an example of a cutting tool and its tool element according to the present invention, FIG. 2M is a partially cross-sectional front partial view taken along line ■-■ in FIG. 1, and FIG. 1, and FIG. 4 is a sectional view corresponding to FIG. 3, with the coupling member between the tool element and the holder removed. In the figure: 10: holding body, 11: tool element, 12: fastener, 13: implanted blade, 14: fine pore unit, 16: support surface, 18 dual force spring member, 19: operating member, 20: operating member extension Part, 21: Head, 23: Clamp member, 24: Inclined surface, 25: Conical part, 26: Inclined surface, 27: Rear part of cylinder, 28 Front part of two cylinders, 29: Bore, 31
: Conical bore, 32 Nislot, 33: Projection, 34: Projection, 35: Cylindrical part, 36: Support surface, 37: Support surface, 38: Screw hole,
39: Threaded part, 40: Groove, 41
: Contact surface, 42: Contact surface, 43: Lock ring, 44: Cylindrical portion 4.5/11 Expandable shaft, 4 s'; Expandable shaft, 46: Recess. Patent Applicant: Seco Toulus Aktieborak Patent Attorney: Akira Aoki, Patent Attorney Kazuyuki Nishidate, Patent Attorney Akira Yamaguchi, Patent Attorney Masaya Nishiyama Figure 1 Figure 3 Figure 6

Claims (1)

[Claims] 1. A holding body 10, a tool element having a cutting means 13 and supported in a relatively unrotatable manner on the holding body 1°, and a fastener 12 for fastening the tool element to the holding body 10. In the cutting tool, the fastener 12 comprises an operating member 19, 20 which is movable in the longitudinal direction of the holder 10 and has a threaded hole 38, and an operating member 19, 20 which extends transversely to the holder 10 and is rotatably attached to the tool element 11. The coupling member 18 includes a supported coupling member 18, which shoulders a threaded portion 39 screwed into the threaded hole 38, thereby preventing rotation of the coupling member 18 about its longitudinal axis. an actuating member 19.2 for moving the tool element 11 from a first position to a second position in the transverse direction of the holding body 10 and subsequently acting in the longitudinal direction of the holding body 10.
A cutting tool characterized in that the tool element 11 is tightened to the holder 10 in the second position by a pushing force of 0. 2. The cutting tool according to claim 1, further comprising locking means 21.43 for fixing the coupling member 18 to the tool element 11 in the axial direction. The tool element 11 is received in the groove 40 of the holder 10 from the groove 40.
The slot 3 has a slot 32 extending toward the
2 are narrowed by projections 33, 34 on their opposite sides, and the projections 33, 34' and the coupling member 18 have cam surfaces which allow the tool element 11 to extend transversely to the holder 10. When pressed by the fastener 12 against the support surface 16 of the body 10, the protrusions 33 and 34 cooperate to move apart in opposite directions, thereby causing the retainer 10 to
Cutting according to claim 2, characterized in that the opposed abutment surfaces 41, 42 of the tool element 11 are pressed against the supporting surfaces 36, 37 of the holder 10 extending in the longitudinal direction of the tool element 11. Cutting tool according to claim 3, in which the groove 40 and the part 35 of the coupling member 18 rotatably journaled therein have a circular cross section. 5. The coupling member 18 has two cylindrical portions 35.44 located at both ends of the threaded portion 390, and the cylindrical portions 35.44 have two grooves spaced apart from each other in the transverse direction. 4
A cutting tool according to any one of claims 3 and 4, wherein the cutting tool is rotatably supported on a shaft.