CN211135567U

CN211135567U - Multifunctional inner hole turning tool

Info

Publication number: CN211135567U
Application number: CN201922121673.3U
Authority: CN
Inventors: 方腾; 储永代; 万栋梁; 赵飞; 王刚
Original assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Current assignee: Zhuzhou Cemented Carbide Cutting Tools Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-31
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a multi-functional hole turning cutter, including cutting portion and stalk portion, the cutting portion includes the first main part that sets gradually along the circumferencial direction, first chip groove, second main part and second chip groove, first main part is equipped with first sword groove on crossing the face with first chip groove, the second main part is equipped with the second sword groove on crossing the face with second chip groove, install first turning blade in the first sword groove, install second turning blade in the second sword groove, set for a perpendicular to cutting portion axis C's plane P, axis C is central O with plane P's nodical, the first knife tip of first turning blade and the second knife tip of second turning blade are all in plane P, and first knife tip, second knife tip and central O three collineation. The utility model discloses the cutter is equipped with two sword grooves, and the different turning blade of installation in each sword groove uses two kinds of blades simultaneously and can need not change the cutter arbor, need not shut down and change work piece direction of rotation, has reduced the tool changing time, has improved work efficiency.

Description

Multifunctional inner hole turning tool

Technical Field

The utility model relates to a metal cutting especially relates to a multi-functional hole turning cutter.

Background

Turning is divided into external turning and inner hole turning, and the inner hole turning is more difficult than external turning due to the fact that machining space is limited and chip removal is difficult. At present, aiming at inner hole machining, common cutter bars of a numerical control lathe mainly adopt a one-to-one corresponding mode, namely, one cutter bar can only be used for installing indexable turning blades of one type. For workpieces with complex inner hole shapes, the requirement cannot be met generally by adopting one type of indexable cutting insert, and the machining can be finished by adopting two or more types of indexable turning inserts. The cutter changing times are increased, a large amount of processing time is wasted, and the times of assembling and disassembling the cutter bar are increased due to the limited number of the lathe turrets. In order to solve the problem, a common solution is to mount a plurality of indexable inserts on a tool bit of an inner hole turning tool rod to form a composite turning tool rod, for example, a plurality of different indexable turning inserts are mounted at stepped intervals, and the scheme not only changes the rotation direction of a workpiece, but also is limited by the size of a hole, and can not process a blind hole.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a turning blade that has the difference, need not shut down during the use, need not to change processing work piece direction of rotation, can effectively reduce the tool changing time, improve work efficiency's multi-functional hole turning cutter.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a multi-functional hole turning cutter, includes cutting portion and stalk portion, cutting portion includes first main part, first chip groove, second main part and the second chip groove that sets gradually along circumferencial direction, first main part is equipped with first sword groove on the face crossing with first chip groove, the second main part is equipped with the second sword groove on the face crossing with the second chip groove, install first turning blade in the first sword groove, install second turning blade in the second sword groove, set for a perpendicular to cutting portion axis C's plane P, axis C is central O with the nodical of plane P, the first knife tip of first turning blade and the second knife tip of second turning blade are all in plane P, and first knife tip, second knife tip and central O three collineation.

As a further improvement of the above technical solution, the first turning insert and the second turning insert are located at an end surface of the cutting portion.

As a further improvement of the above technical solution, the shank is provided with a first internal cooling hole for cooling the first cutting insert, and the first internal cooling hole extends into the first chip flute.

As a further improvement of the above technical solution, the shank is provided with a second internal cooling hole for cooling the second cutting insert, and the second internal cooling hole extends into the second chip groove.

As a further improvement of the technical scheme, the diameter of the cutting part is D, and the value range of D is 48-60 mm.

As a further improvement of the above technical solution, the first turning insert is mounted in the first insert pocket by a fastener or a pressing member.

As a further improvement of the above technical solution, the second cutting insert is mounted in the second pocket by a fastener or a pressing member.

As a further improvement of the above technical solution, the shank and the cutting portion are integrally formed.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a multi-functional hole turning cutter is equipped with two sword grooves on cutting portion (cutter arbor), and the different turning blade of installation in each sword groove uses two kinds of turning blades simultaneously and need not change the cutter arbor when guaranteeing the complicated hole of turning, need not shut down and change processing work piece direction of rotation simultaneously, can effectively reduce the tool changing time, improves work efficiency.

Furthermore, the first turning blade and the second turning blade are located on the end face of the cutting portion, the arrangement mode can ensure that the cutter can process blind holes, avoiding space is not needed, and one turning blade cannot cause interference to the other blade.

Drawings

Fig. 1 is a schematic perspective view of a cutter according to embodiment 1 of the present invention.

Fig. 2 is a schematic perspective view (rotated 180 ° with respect to fig. 1) of a cutter according to embodiment 1 of the present invention.

Fig. 3 is a schematic view of a first cutting insert cutting state according to embodiment 1 of the present invention.

Fig. 4 is a schematic view of a second cutting state of the cutting insert according to embodiment 1 of the present invention.

Fig. 5 is a schematic perspective view of a cutter according to embodiment 2 of the present invention.

Fig. 6 is a schematic perspective view (rotated 180 ° with respect to fig. 5) of a cutter according to embodiment 2 of the present invention.

Fig. 7 is a schematic view of a first cutting insert cutting state according to embodiment 2 of the present invention.

Fig. 8 is a schematic view of a second cutting state of the cutting insert according to embodiment 2 of the present invention.

The reference numerals in the figures denote:

1. a cutting portion; 11. a first body; 12. a first chip discharge groove; 13. a second body; 14. a second chip groove; 2. a handle; 3. a first knife slot; 4. a second knife slot; 5. a first turning insert; 51. a first tip; 6. a second turning blade; 61. a second tip; 7. a first internal cooling hole; 8. a second internal cooling hole; 9. and (5) a workpiece.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Example 1

As shown in fig. 1 to 4, the multifunctional inner hole turning tool of the present embodiment includes a cutting portion 1 and a shank portion 2, the cutting portion 1 includes a first main body 11, a first chip discharge groove 12, a second main body 13 and a second chip discharge groove 14 which are sequentially arranged along a circumferential direction, the first chip discharge groove 12 and the second chip discharge groove 14 are used for discharging chips during tool turning, the first main body 11 is provided with a first chip groove 3 on a surface intersecting with the first chip discharge groove 12, the second main body 13 is provided with a second chip groove 4 on a surface intersecting with the second chip discharge groove 14, the first chip discharge groove 12 and the second chip discharge groove 14 are oppositely oriented, the first cutting insert 5 is mounted in the first chip groove 3, the second cutting insert 6 is mounted in the second chip groove 4, a plane P perpendicular to an axis C of the cutting portion 1 is set, an intersection point of the axis C and the plane P is a center O, a first cutting tip 51 of the first cutting insert 5 and a second cutting tip 61 of the second cutting insert 6 are both in the plane P, and the first tip 51, the second tip 61 and the center O are collinear.

In this embodiment, the first turning insert 5 and the second turning insert 6 are different types of inserts, the first turning insert 5 is a T-shaped insert (TCMT16T308), and the second turning insert 6 is a W-shaped insert (WNMG080408), and as shown in fig. 3 and 4, the turning tool mainly realizes axial feeding and does not need to rotate during turning. In the initial position, the first cutting insert 5 and the second cutting insert 6 are substantially horizontal, i.e. the first cutting edge 51, the second cutting edge 61 and the center O are collinear, corresponding to the heights H1 and H2 of the first cutting edge 51 and the second cutting edge 61 being equal, and the first cutting edge 51 and the second cutting edge 61 also being co-circular.

When the first turning insert 5 (W-shaped insert) is required to be used for machining, the first turning insert 5 can be used for machining the inner hole of the workpiece 9 by only moving the shank 2 to the right, as shown in fig. 3. When a second turning blade 6 (T-shaped blade) is needed to be used for machining, the T-shaped blade can be used for machining only by moving the handle 2 to the left, the changing process does not need to be stopped, the rotating direction of the workpiece 9 does not need to be changed, and the T-shaped blade can be switched at any time. The turning blades of two different types are combined on one cutter, so that the cutter changing times can be effectively reduced, and the processing efficiency is improved. The heights of the tool tips of the blades on the cutting part 1 are equal, and the rotating directions of the blades during cutting are the same, so that the rotating directions of the workpieces 9 are the same when any blade on the cutting part 1 is used, the need of stopping and changing the rotating direction of the workpieces 9 during tool changing can be effectively reduced, and the working efficiency is improved.

In this embodiment, the cutting portion 1 and the handle portion 2 are integrally formed, i.e. a tool bar. In other embodiments, the cutting portion 1 and the shank portion 2 may be assembled.

In this embodiment, the first turning insert 5 and the second turning insert 6 are located on the end face of the cutting portion 1, and this arrangement can ensure that the tool can process blind holes without avoiding space, and one turning insert does not interfere with the other. (step type blade in the prior art, only can process the through hole, when one blade is processed, the other blade needs to extend out of the hole)

In the present embodiment, the shank 2 is provided with a first internally cooled hole 7 for cooling the first cutting insert 5, the first internally cooled hole 7 extending into the first chip flute 12. The shank 2 is provided with a second internally cooled hole 8 for cooling the second cutting insert 6, the second internally cooled hole 8 extending into the second chip groove 14.

The diameter of the cutting part 1 is D, and in a specific application example, the value of D ranges from 48mm to 60 mm. In this embodiment, D is preferably 50 mm.

In this embodiment, the first turning insert 5 is mounted in the first insert pocket 3 by means of a fastener. The second turning insert 6 is mounted in the second pocket 4 by means of a fastening element, preferably a screw, it being noted that the first and second turning inserts 5, 6 may also be mounted in the pocket by means of a pressing element, although the first and second turning inserts 5, 6 may also be mounted in a non-removable manner, such as by welding.

Example 2

As shown in fig. 5 to 8, the multifunctional inner hole turning tool of the present embodiment is different from embodiment 1 in that:

in this embodiment, the first turning blade 5 and the second turning blade 6 have different functions. The first turning insert 5 is a shallow groove machining insert and the second turning insert 6 is a thread machining insert. In the initial position, the first turning insert 5 is level with the second turning insert 6, but not co-circular.

When shallow grooves need to be machined in the inner holes of the workpieces 9, the first turning blade 5 can be used for machining the shallow grooves in the inner holes of the workpieces 9 only by moving the cutter bar to the right, as shown in fig. 7; when the threads are required to be machined in the inner hole of the workpiece 9, the second turning blade 6 can be used for machining the threads in the inner hole of the workpiece 9 only by moving the cutter bar to the left without stopping the machine and keeping the rotation direction of the workpiece 9 unchanged.

The embodiment 1 and the embodiment 2 are only used as examples of different types, the invention is not limited to the examples, and the blades required to be used can be freely combined according to the requirements of processing workpieces.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a multi-functional hole turning tool which characterized in that: including cutting portion (1) and stalk portion (2), cutting portion (1) is including first main part (11), first chip groove (12), second main part (13) and second chip groove (14) that set gradually along the circumferencial direction, first main part (11) are equipped with first sword groove (3) on the face that intersects with first chip groove (12), second main part (13) are equipped with second sword groove (4) on the face that intersects with second chip groove (14), install first cutting blade (5) in first sword groove (3), install second cutting blade (6) in second sword groove (4), set for a plane P that is perpendicular to cutting portion (1) axis C, the nodical of axis C and plane P is center O, first knife tip (51) of first cutting blade (5) and second knife tip (61) of second cutting blade (6) are all in plane P, and the first cutter point (51), the second cutter point (61) and the center O are collinear.

2. The multi-functional bore turning tool of claim 1, wherein: the first turning blade (5) and the second turning blade (6) are located on the end face of the cutting portion (1).

3. The multi-functional bore turning tool of claim 1, wherein: the handle portion (2) is provided with a first internal cooling hole (7) for cooling the first cutting blade (5), and the first internal cooling hole (7) extends into the first chip groove (12).

4. The multi-functional bore turning tool of claim 1, wherein: the handle part (2) is provided with a second inner cooling hole (8) for cooling the second turning insert (6), and the second inner cooling hole (8) extends into the second chip groove (14).

5. The multifunctional inner bore turning tool according to any one of claims 1 to 4, wherein: the diameter of the cutting part (1) is D, and the value range of D is 48-60 mm.

6. The multifunctional inner bore turning tool according to any one of claims 1 to 4, wherein: the first turning insert (5) is mounted in the first pocket (3) by means of a fastener or a pressing member.

7. The multifunctional inner bore turning tool according to any one of claims 1 to 4, wherein: the second cutting insert (6) is mounted in the second pocket (4) by means of a fastener or a pressing member.

8. The multifunctional inner bore turning tool according to any one of claims 1 to 4, wherein: the handle part (2) and the cutting part (1) are integrally formed.