Parting lathe tool

Abstract

A parting lathe tool for machining metal is described. This has a clamping seat for receiving a cutting insert and an internal coolant supply system for supplying coolant to a cutting zone. In this case, the coolant supply system comprises at least three coolant outlets. The coolant outlets are fluidically connected to a coolant supply port via at least two separate coolant lines running within the parting lathe tool.

Claims

1. A parting lathe tool for machining metal, comprising: a clamping seat for receiving a cutting insert; and an internal coolant supply system supplying a cutting zone with coolant, the internal coolant supply system comprising: a first coolant line, a second coolant line and a third coolant line running within the parting lathe tool, a coolant supply port defined by an opening through which coolant first enters the parting lathe tool, a first coolant outlet directly connected to the coolant supply port via the first coolant line extending within the parting lathe tool from the coolant supply port to the first coolant outlet, a second coolant outlet directly connected to the coolant supply port via the second coolant line extending within the parting lathe tool from the coolant supply port to the second coolant outlet, and a third coolant outlet directly connected to the coolant supply port via the third coolant line extending within the parting lathe tool from the coolant supply port to the third coolant outlet.

2. The parting lathe tool according to claim 1, wherein the first coolant outlet is positioned on a clamping face of the clamping seat.

3. The parting lathe tool according to claim 2, wherein the first coolant outlet is fluidically connected to a coolant inlet of a cutting insert.

4. The parting lathe tool according to claim 1, wherein the second coolant outlet is positioned on a workpiece-side end face of the parting lathe tool.

5. The parting lathe tool according to claim 4, wherein the second coolant outlet is positioned below the clamping seat in a mounted state of the parting lathe tool.

6. The parting lathe tool according to claim 1, wherein the third coolant outlet is positioned on an angled portion of a clamping lug rearward from a workpiece-side end face of the clamping lug of the clamping seat.

7. The parting lathe tool according to claim 6, wherein the third coolant outlet is positioned above the clamping seat.

8. The parting lathe tool according to claim 1, wherein an indexable cutting insert is positioned in the clamping seat.

9. The parting lathe tool according to claim 1, wherein the parting lathe tool is a parting lathe blade.

10. The parting lathe tool according to claim 1, further comprising a tool shank having a rectangular or square cross-section.

11. The parting lathe tool according to claim 1, wherein the first, second and third coolant lines each comprise a linear section having a circular cross-section.

12. The parting lathe tool according to claim 1, wherein the first, second and third coolant lines are produced using a generative manufacturing process.

13. The parting lathe tool according to claim 12, wherein the first, second and third coolant lines produced using a generative manufacturing process each have a non-circular cross-section.

14. The parting lathe tool of claim 1, wherein the coolant supply port is positioned on a side surface of the parting lathe tool.

15. A parting lathe tool for machining metal, comprising: a clamping seat for receiving a cutting insert; and an internal coolant supply system supplying a cutting zone with coolant, the internal coolant supply system comprising: a first coolant line, a second coolant line and a third coolant line running within the parting lathe tool, a first coolant outlet directly connected to a coolant supply port via the first coolant line extending within the parting lathe tool from the coolant supply port to the first coolant outlet, a second coolant outlet directly connected to the coolant supply port via the second coolant line extending within the parting lathe tool from the coolant supply port to the second coolant outlet, and a third coolant outlet directly connected to the coolant supply port via the third coolant line extending within the parting lathe tool from the coolant supply port to the third coolant outlet, wherein the first coolant outlet is positioned on a clamping face of the clamping seat and is fluidically connected to a coolant inlet of a cutting insert.

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 parting lathe tool according to the invention in a first embodiment in a perspective view,

(3) FIG. 2 the parting lathe tool from FIG. 1 in a side view along direction II,

(4) FIG. 3 the parting lathe tool from FIG. 1 in a frontal view along direction III,

(5) FIG. 4 a variant of the parting lathe tool from FIG. 1 in a broken perspective view,

(6) FIG. 5 a parting lathe tool according to the invention according to a second embodiment in a perspective view,

(7) FIG. 6 the parting lathe tool from FIG. 5 in a side view along direction VI,

(8) FIG. 7 the parting lathe tool from FIG. 5 in a frontal view along direction VII,

(9) FIG. 8 a parting lathe tool according to the invention in a third embodiment in a perspective view,

(10) FIG. 9 the parting lathe tool from FIG. 8 in a side view along direction IX,

(11) FIG. 10 the parting lathe tool from FIG. 8 in a frontal view along direction X,

(12) FIG. 11 the parting lathe tool from FIG. 8 in a perspective view cut along the plane X-X, and

(13) FIG. 12 the parting lathe tool from FIG. 8 in a sectional view X-X.

DETAILED DESCRIPTION

(14) FIGS. 1 to 3 show a parting lathe tool 10 for machining metal.

(15) The parting lathe tool 10 can also be referred to as a cutting lathe tool.

(16) The parting lathe tool 10 comprises a clamping seat 12 to accommodate a cutting insert that is not shown in more detail and which can in particular be an indexable insert. This is basically made up of two clamping faces 14, 16 between which the cutting insert can be clamped.

(17) The parting lathe tool 10 also includes an internal coolant supply system 18 for supplying coolant to a cutting zone.

(18) For this purpose, a coolant supply port 20 is provided on the parting lathe tool 10 on the toolholder side or on the lathe side.

(19) This is designed as a substantially circular hole and can be fluidly connected to a coolant supply outside the parting lathe tool 10.

(20) In other words, the parting lathe tool 10 is supplied with coolant via the coolant supply port 20.

(21) The coolant supply port 20 is fluidically connected to a first coolant outlet 24 via a first coolant line 22, to a second coolant outlet 28 via a second coolant line 26 and to a third coolant outlet 32 via a third coolant line 30.

(22) The coolant lines 22, 26, 30 are fluidically connected to the respectively associated coolant outlets 24, 28, 32.

(23) In addition, they run inside the parting lathe tool 10.

(24) The first coolant outlet 24 is provided on the first clamping face 14.

(25) Here it is designed to be fluidically connected to a coolant inlet of the cutting insert which is not shown in more detail. Additional coolant lines via which the coolant can be introduced into the cutting zone can be provided for this purpose in the cutting insert itself.

(26) Alternatively, the cutting insert can also be supplied solely with coolant via the coolant outlet 24.

(27) The second coolant outlet 28 is provided on one end face 34 on the workpiece side of the parting lathe tool 10.

(28) When the parting lathe tool 10 is mounted in a lathe, the second coolant outlet 28 is located below the clamping seat 12. This situation is illustrated in FIG. 1.

(29) Here, the second coolant outlet 28 is assigned to a free area of the cutting insert, which is not shown, and serves to supply it with a flow of coolant.

(30) The third coolant outlet 32 is arranged on one workpiece-side end face 36 of a clamping lug 38 of the clamping seat 12.

(31) When the parting lathe tool 10 is mounted in a lathe, the third coolant outlet 32 will be located above the clamping seat 12.

(32) The third coolant outlet 32 is assigned to a cutting face of the cutting insert, which is not shown. The cutting face can be supplied with a flow of coolant via the third coolant outlet 32.

(33) In the embodiment according to FIGS. 1 to 3, the coolant line 26 is made of three linear coolant line sections 26a, 26b and 26c. These are substantially circular in cross-section.

(34) The coolant line sections 26a, 26b, 26c are holes.

(35) The same applies to coolant line 22, which is composed of coolant line sections 22a and 22b.

(36) The coolant line 30 comprises coolant line sections 30a and 30b which also extend in a straight line and are substantially circular in cross-section.

(37) In a variant of the first embodiment shown in FIG. 4, the coolant line sections 22a, 30a are designed as a single coolant line section which, at a certain distance from the coolant supply port 20, branches off into the coolant line sections 22b, 30b. In other words, coolant outlets 24, 32 are supplied with coolant via a common coolant line which is formed by the coolant line section designated 22a and 30a.

(38) Such a parting lathe tool then comprises a total of two coolant lines, namely the coolant line section designated 22a and 30a, and the coolant line 26, and three coolant outlets 24, 28, 32.

(39) The parting lathe tool 10 shown is designed as a so-called indexable tool. This means that a second clamping seat is provided on the parting lathe tool 10 and is point-symmetrical with respect to the above-described clamping seat 12. Since the two clamping seats and the associated coolant supply system are identical in design, a separate explanation will be dispensed with.

(40) Of course, the parting lathe tool 10 in one variant can also have just one single clamping seat 12 and just one single coolant supply system 18.

(41) FIGS. 4 to 6 show a second embodiment of the parting lathe tool 10.

(42) Only the differences from the embodiment according to FIGS. 1 to 3 will be addressed in the following.

(43) The parting lathe tool 10 comprises a first section 10a produced by means of a generative manufacturing process, and a second section 10b, also produced by means of a generative manufacturing process.

(44) The linear coolant line sections 22a, 22b of the coolant line 22 are shorter compared with the first embodiment and are connected via a coolant line section 22c.

(45) This is produced by means of a generative manufacturing process and is arcuate, in other words, is not linear. It can also be said that the coolant line section 22c is curvilinear.

(46) The same applies to coolant line 26 in which the coolant line segment 26b is shorter compared with the first embodiment, and the coolant line segment 26c has been replaced by an arcuate coolant line segment 26d.

(47) The coolant line section 26d is also produced using a generative manufacturing process.

(48) In the case of the coolant line 30, the coolant line section 30a and the coolant line section 30b are connected via an arcuate coolant line section 30c which is produced using a generative manufacturing process.

(49) In the illustrated embodiment, the coolant line sections 22c, 30c, 26d running within the generatively produced sections 10a, 10b of the parting lathe tool 10 are produced with a substantially circular cross-section.

(50) The parting lathe tool can even be produced in its entirety by the generative manufacturing process. In that case, all of the coolant line sections 22a, 22b, 22c, 22c, 26a, 26b, 26c, 26c, 26d, 30a, 30b, 30c are manufactured generatively.

(51) Alternatively, in other embodiments, coolant line sections other than those in the embodiment according to FIGS. 4 to 6 can also be manufactured by means of a generative manufacturing process.

(52) Analogous to the variant of the first embodiment shown in FIG. 4, in a variant, not shown, of the second embodiment, the coolant line sections 22a, 30a and/or the coolant line sections 22c, 30c are designed as a single coolant line section which, at a certain distance from the coolant supply port 20, branches off into the coolant line sections 22b, 30b. Here, the branch can lie within the region of the coolant line sections 22a and 30a or in the region of the coolant line sections 22c and 30c. In other words, the coolant outlets 24, 32 are supplied with coolant via a common coolant line.

(53) As in the first embodiment, the parting lathe tool 10 shown is designed as a so-called indexable tool. Again, only one clamping seat 12 and one coolant supply system 18 are described.

(54) FIGS. 7 to 11 show a third embodiment of the parting lathe tool 10.

(55) Only the differences from the embodiment according to FIGS. 4 to 6 will be addressed in the following.

(56) The course of the coolant lines 22, 26, 30 is substantially identical to the second embodiment. However, in the third embodiment, the cross-sections of the coolant lines 22, 26, 30 are elliptical in form (see FIGS. 10 and 11).

(57) In this case, the parting lathe tool 10 is produced in its entirety by means of a generative manufacturing process. Accordingly even the coolant lines 22, 26, 30 are produced in their entirety by a generative manufacturing process.

(58) In this way, other, almost arbitrary cross-sectional shapes of the coolant lines 22, 26, 30 can also be realized, such as polygonal cross-sections.

(59) In a variant not shown here analogous to the variant shown in FIG. 4 of the first embodiment, the coolant lines 22, 30 are designed as a single coolant line which at a certain distance from the coolant supply port 20 branches off and is thus fluidically connected to the two coolant outlets 24, 32. In other words, the coolant outlets 24, 32 are supplied with coolant via a common coolant line.

(60) All of the parting lathe tools 10 described have the form of parting-off blades. However, the above remarks also apply in an analogous manner to parting lathe tools 10 with an substantially rectangular tool shank.