Turning tool holder and turning tool

Abstract

A turning tool holder with a turning tool holder shank and a turning tool holder head is described. In an installed position of the turning tool holder, a longitudinal extension direction of the turning tool holder head is a longitudinal extension direction of the turning tool holder shank which continues straight-ahead, at an angle, or over a radius. The turning tool holder head, seen in its longitudinal extension direction, thereby has two side faces, wherein a lateral coolant outlet is provided on one of the side faces, the lateral coolant outlet center axis of which lateral coolant outlet, in plan view, is predominantly oriented along the longitudinal extension direction of the turning tool holder head. In addition, a turning tool with such a turning tool holder is presented.

Claims

1. A turning tool holder, comprising: a turning tool holder shank having a longitudinal extension direction; and a turning tool holder head having a mounting pocket configured for mounting a cutting insert therein, the turning tool holder head having a longitudinal extension direction, the turning tool holder head including a top face, an underside face opposite the top face, two opposing side faces connecting the top face and the underside face, and a front face opposite the turning tool holder shank, wherein the front face includes a frontally projecting extension having a frontal coolant outlet, the frontal coolant outlet having a frontal coolant outlet center axis oriented in a direction that is substantially transverse to the longitudinal extension direction of the turning tool holder head and directed toward the mounting pocket for the cutting insert, wherein the top face includes at least one coolant outlet having a coolant outlet center axis oriented in a direction that is substantially transverse to the longitudinal extension direction of the turning tool holder head and directed toward the mounting pocket for the cutting insert, wherein one of the two opposing side faces includes a laterally projecting extension having at least one coolant outlet with a coolant outlet center axis oriented in a direction that is substantially parallel to the longitudinal extension direction of the turning tool holder head and directed toward the mounting pocket for the cutting insert.

2. The turning tool holder of claim 1, wherein the front face of the frontally projecting extension is facing toward the mounting pocket for the cutting insert.

3. The turning tool holder of claim 1, wherein the frontal coolant outlet center axis is substantially transverse to the lateral coolant outlet center axis.

4. The turning tool holder of claim 1, wherein the frontal coolant outlet center axis is inclined at an upward angle of between about 15 degrees to about 60 degrees with respect to the longitudinal extension direction of the turning tool holder head.

5. The turning tool holder of claim 1, wherein the frontal coolant outlet center axis is inclined at an upward angle of between about 35 to about 50 degrees with respect to the longitudinal extension direction of the turning tool holder head.

6. The turning tool holder of claim 1, wherein the front face is formed at an oblique angle with respect to the top face of the turning tool holder head.

7. The turning tool holder of claim 1, wherein the coolant outlet center axis is substantially transverse to the lateral coolant outlet center axis of the at least one lateral coolant outlet.

8. The turning tool holder of claim 1, wherein the longitudinal extension direction of the turning tool holder shank and the longitudinal extension direction of the turning tool holder shank are aligned at an angle of 180 degrees with respect to each other.

9. The turning tool holder of claim 1, wherein the longitudinal extension direction of the turning tool holder shank and the longitudinal extension direction of the turning tool holder shank are aligned at an angle of 90 degrees with respect to each other.

10. The turning tool holder of claim 1, wherein the lateral coolant outlet center axis is inclined at an angle greater than 0 degrees and less than or equal to about 80 degrees with respect to the longitudinal extension direction of the turning tool holder head.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained below with reference to various embodiments which are shown in the accompanying drawings. In the figures:

(2) FIG. 1 a turning tool according to the invention, with a turning tool holder according to the invention according to a first embodiment,

(3) FIG. 2 a detail II of the turning tool in FIG. 1,

(4) FIG. 3 a side view III of the turning tool according to FIG. 1,

(5) FIG. 4 a plan view IV of the turning tool in FIG. 1,

(6) FIG. 5 a front view V of the turning tool in FIG. 1,

(7) FIG. 6 a turning tool according to the invention, with a turning tool holder according to the invention according to a second embodiment,

(8) FIG. 7 a detail VII of the turning tool in FIG. 6,

(9) FIG. 8 a plan view VIII of the turning tool according to FIG. 6,

(10) FIG. 9 a side view IX of the turning tool according to FIG. 6, and

(11) FIG. 10 a front view X of the turning tool in FIG. 6.

DETAILED DESCRIPTION

(12) FIG. 1 shows a turning tool 10, presented in the installed position, with a turning tool holder 12 on which is installed a cutting insert 14 designed as an indexable insert.

(13) The turning tool holder 12 comprises a turning tool holder shank 12a and a turning tool holder head 12b.

(14) The turning tool holder shank 12a is thereby designed as a clamping shank with a substantially rectangular cross-section.

(15) The depicted turning tool holder 12 is a holder of neutral design. A longitudinal extension direction 16 of the turning tool holder head 12b and a longitudinal extension direction 18 of the turning tool holder shank 12a thereby enclose an angle of 180. The longitudinal extension direction 16 of the turning tool holder head 12b is therefore a straight continuation of the longitudinal extension direction 18 of the turning tool holder shank 12a.

(16) In the present instance, the cutting insert is installed with a tool cutting angle of approx. 93.

(17) The turning tool holder head 12b, which is substantially rectangular in cross-section, comprises a top face 20 as seen in its longitudinal extension direction 16 and in its installation position.

(18) Opposite this is an underside face 22.

(19) Furthermore, the turning tool holder head 12b comprises two opposite side faces 24a, 24b, in each case connecting the top face 20 and the underside face 22.

(20) In the embodiment illustrated in FIGS. 1 through 5, two coolant outlets 26a, 26b are provided on the side face 24a.

(21) In a view of the top face 20, the respective associated coolant outlet center axes 28a, 28b of the coolant outlets 26a, 26b predominantly extend along the longitudinal extension direction 16 of the turning tool holder head 12b (see FIG. 4).

(22) The coolant outlet center axes 28a, 28b are thus oriented substantially parallel to the longitudinal extension direction 16.

(23) At the same time, the coolant outlet center axes 28a, 28b are essentially directed toward a mounting pocket 29 in which in the illustrated embodiment of the cutting insert 14 is installed.

(24) In a side view, thus in particular in a substantially vertical view of the side face 24a, the coolant outlet center axes 28a, 28b are inclined upward by an angle of .sub.a or .sub.b of approximately 45 (see FIG. 3), and namely laterally toward the cutting edge of the cutting insert 14, relative to the longitudinal extension direction 16 of the turning tool holder head 12b.

(25) At the point at which the coolant outlets 26a, 26b emerge from the side face 24a, a laterally projecting extension 32 is formed which is plate-shaped.

(26) The thickness of the plate-shaped extension 32 is thereby to be measured laterally as viewed in the longitudinal extension direction 16.

(27) Expressed more precisely, the coolant outlets 26a, 26b are arranged on a front face 34 of the extension 32 which points in the direction of the mounting pocket 29 in which the cutting insert 14 is installed.

(28) In the installation position of the turning tool 10, the front face 34 thus points obliquely upwards to the top face 20 and to the cutting insert end of the turning tool holder head 12b.

(29) The arrangement of the coolant outlets 26a, 26b on the extension 32 thereby represents a preferred embodiment. In an alternative embodiment, not shown, the coolant outlets 26a, 26b may also emerge directly from one of the side faces 24a, 24b without an extension 32 being provided.

(30) In addition, the turning tool holder 12 comprises a front face 30 that is provided on a face of the turning tool holder head 12b, said face being opposite to the turning tool holder shank 12a.

(31) A coolant outlet, more precisely stated a frontal coolant outlet 26a with a frontal coolant outlet center axis 28c, is also provided on the front face 30.

(32) In the illustrated embodiment, this is provided on a frontally projecting extension 35, analogous to the laterally projecting extension 32.

(33) In this context, it is alternatively possible that the frontal coolant outlet 26c emerges directly from the front face 30, in other words, with no extension 35 provided (not shown).

(34) In this instance, the coolant outlet 26c terminates at a front face 37 that points toward the mounting pocket 29.

(35) Seen in plan view, the frontal coolant outlet center axis 28c is thereby predominantly oriented transversal to the longitudinal extension direction 16 of the turning tool holder head 12b (see FIG. 4).

(36) In a front face view or frontal view, the frontal coolant outlet center axis 28c is inclined upward by an angle .sub.c of 0 degrees to 80 degrees, in particular from 15 degrees to 60 degrees, more particularly from 35 degrees to 50 degrees (see FIG. 5).

(37) The frontally projecting extension 35 is also of a plate-shaped design.

(38) In contrast to the laterally projecting extension 32, however, its thickness does extend in the longitudinal extension direction 16 of the turning tool holder head 12a.

(39) In the illustrated exemplary embodiment, three additional coolant outlets 26d, 26e and 26f are arranged on the top face 20.

(40) The associated coolant outlet center axes 28d, 28e and 28f are essentially directed at the mounting pocket 29 in which the cutting insert 14 is installed.

(41) In the shown embodiment, all of the lateral coolant outlet central axes 28a, 28b are therefore essentially directed at a main cutting edge 38 of the cutting insert 14.

(42) The frontal coolant outlet center axis 28c is essentially directed at a secondary cutting edge 40 of the cutting insert 14.

(43) In addition, all of the coolant outlet center axes 28d, 28e, 28f of the additional coolant outlets 26d, 26e, 26f are essentially directed at a cutting face lying between the main cutting edge 38 and the secondary cutting edge 40.

(44) The cutting insert 14, or expressed more precisely its cutting edge, is thus cooled from three directions, which is why the term 3D cooling can also be used.

(45) FIGS. 6 through 10 show a variant of the turning tool 10 in which the turning tool holder head 12b is bent or offset at a right angle relative to the turning tool holder shank 12a. In this embodiment, the longitudinal extension direction 16 of the turning tool holder head 12b is thus a longitudinal extension direction 18 of the turning tool holder shank 12a continuing across an angle , wherein the angle is 90.

(46) The variant according to FIG. 2 is also shown in the installed position.

(47) Because the turning tool in accordance with the second embodiment is otherwise constructed corresponding to the first embodiment (see FIGS. 1 through 5), reference is made to the above explanations.

(48) In a further variant, not shown, a radius could also be provided instead of the angle , so that the longitudinal extension direction 16 of the turning tool holder head 12b is then the longitudinal extension direction 18 of the turning tool holder shank 12a continued via a radius.