CN211135567U - Multifunctional inner hole turning tool - Google Patents

Abstract

The utility model discloses a multifunctional inner hole turning tool, which comprises a cutting part and a shank part; , the first body is provided with a first sipe on the surface intersecting with the first chip groove, the second body is provided with a second sipe on the surface intersecting with the second chip groove, and the first sipe is installed in the first sipe A turning insert, a second turning insert is installed in the second pocket, a plane P perpendicular to the axis C of the cutting part is set, the intersection of the axis C and the plane P is the center O, and the first cutting edge of the first turning insert The second tool nose of the two turning inserts are all in the plane P, and the first tool nose, the second tool nose and the center O are collinear. The tool of the utility model is provided with two tool grooves, and different turning inserts are installed in each of the tool grooves. When the two inserts are used at the same time, there is no need to replace the tool bar, stop the machine and change the rotation direction of the workpiece, thereby reducing the tool changing time and improving the work efficiency. .

Description

A multifunctional inner hole turning tool

technical field

The utility model relates to metal cutting, in particular to a multifunctional inner hole turning tool.

Background technique

Turning is divided into external turning and internal turning. Internal turning is more difficult than external turning due to its limited processing space and difficult chip removal. At present, for inner hole processing, the common toolholder of CNC lathes mainly adopts a one-to-one correspondence method, that is, a toolholder can only install one type of indexable turning insert. For workpieces with complex inner hole shapes, using one indexable insert generally cannot meet the requirements, and usually requires two or more indexable turning inserts to complete the machining. This will inevitably increase the number of tool changes and waste a lot of processing time. At the same time, due to the limited number of lathe turrets, the number of times of assembling and disassembling the tool holder will be increased. In order to solve this problem, the general solution is to install multiple indexable inserts on the tool head of the inner hole turning toolholder to form a composite turning toolholder. For example, several different indexable turning inserts are installed at stepped intervals. This solution not only changes the The rotation direction of the workpiece is limited by the size of the hole, and blind holes cannot be processed.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and to provide a multi-functional turning insert with different turning inserts, which can be used without stopping the machine or changing the rotation direction of the workpiece, which can effectively reduce the tool changing time and improve work efficiency. Internal turning tools.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A multifunctional inner hole turning tool includes a cutting portion and a shank portion, the cutting portion includes a first main body, a first chip flute, a second main body and a second chip flute arranged in sequence along a circumferential direction, the The first body is provided with a first sipe on the surface intersecting with the first chip flute, the second body is provided with a second sipe on the surface intersecting with the second chip flute, the first sipe A first turning insert is installed inside, a second turning insert is installed in the second pocket, a plane P perpendicular to the axis C of the cutting part is set, and the intersection of the axis C and the plane P is the center O, and the first turning insert is The first cutting edge of , and the second cutting edge of the second turning insert are in the plane P, and the first cutting edge, the second cutting cutting edge and the center O are collinear.

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

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

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

As a further improvement of the above technical solution, the diameter of the cutting portion is D, and the value of D ranges from 48 mm to 60 mm.

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

As a further improvement of the above technical solution, the second turning insert is installed in the second sipe by a fastener or a pressing member.

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

Compared with the prior art, the advantages of the present utility model are:

The multifunctional inner hole turning tool of the utility model is provided with two tool grooves on the cutting part (tool bar), and different turning inserts are installed in each tool groove, so as to ensure that two kinds of turning inserts are used at the same time when turning complex inner holes without replacement. The tool holder does not need to stop and change the rotation direction of the workpiece, which can effectively reduce the tool change time and improve work efficiency.

Further, the first turning insert and the second turning tool are located on the end face of the cutting portion. This arrangement ensures that the tool can process blind holes without avoiding space, and one turning insert will not interfere with the other insert.

Description of drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of a cutter according to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of the three-dimensional structure of the cutter according to Embodiment 1 of the present invention (rotated by 180° relative to FIG. 1 ).

FIG. 3 is a schematic diagram of the cutting state of the first turning insert according to Embodiment 1 of the present invention.

FIG. 4 is a schematic diagram of the cutting state of the second turning insert according to Embodiment 1 of the present invention.

FIG. 5 is a schematic diagram of the three-dimensional structure of the cutter according to the second embodiment of the present invention.

FIG. 6 is a schematic diagram of the three-dimensional structure of the cutter according to the second embodiment of the present invention (rotated by 180° relative to FIG. 5 ).

FIG. 7 is a schematic diagram of the cutting state of the first turning insert according to the second embodiment of the present invention.

FIG. 8 is a schematic diagram of the cutting state of the second turning insert according to the second embodiment of the present invention.

The symbols in the figure represent:

1. Cutting part; 11. The first main body; 12. The first flute; 13. The second main body; 14. The second flute; 2. The shank; 3. The first flute; 5. The first turning insert; 51. The first cutting edge; 6. The second turning insert; 61. The second cutting edge; 7. The first cooling hole; 8. The second cooling hole; 9. The workpiece.

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments of the description.

Example 1

As shown in FIGS. 1 to 4 , the multifunctional inner hole turning tool of this embodiment includes a cutting part 1 and a shank part 2 , and the cutting part 1 includes a first main body 11 and a first chip flute arranged in sequence along the circumferential direction 12. The second main body 13 and the second chip removal groove 14, the first chip removal groove 12 and the second chip removal groove 14 are used for chip removal during tool turning, and the first main body 11 is at the intersection with the first chip removal groove 12. The surface is provided with a first sipe 3, and the second main body 13 is provided with a second sipe 4 on the surface intersecting with the second chip groove 14. The first chip groove 12 and the second chip groove 14 face oppositely, A first turning insert 5 is installed in the first pocket 3, a second turning insert 6 is installed in the second pocket 4, and a plane P perpendicular to the axis C of the cutting part 1 is set, and the intersection of the axis C and the plane P is the center O , the first cutting edge 51 of the first turning insert 5 and the second cutting edge 61 of the second turning insert 6 are in the plane P, and the first cutting edge 51 , the second cutting cutting edge 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 as an example. The first turning insert 5 is a T-shaped insert (TCMT16T308), and the second turning insert 6 is a W-shaped insert (WNMG080408). Figures 3 and 4 are examples. During turning, the turning tool mainly realizes axial feed and does not need to rotate. In the initial position, the first turning insert 5 and the second turning insert 6 are basically horizontal positions, that is, the first tool tip 51, the second tool tip 61 and the center O are collinear, which is equivalent to the first tool tip 51, the first tool tip 51, the second tool tip 61 and the center O. The heights H1 and H2 of the two tool tips 61 are equal, and the first tool tip 51 and the second tool tip 61 are also co-circular.

When the first turning insert 5 (W-type insert) needs to be used for processing, the first turning insert 5 can be used to process the inner hole of the workpiece 9 by simply moving the shank 2 to the right, as shown in FIG. 3 . When the second turning insert 6 (T-type insert) needs to be used for processing at the same time, it is only necessary to move the shank 2 to the left to use the T-type insert for processing. This conversion process does not require downtime, and the rotation direction of the workpiece 9 does not need to be changed. , you can switch at any time. By combining two different types of turning inserts on one tool, the number of tool changes can be effectively reduced and machining efficiency can be improved. The cutting edge height of each insert on the cutting part 1 is the same, and the rotation direction during cutting is the same, which ensures that when any insert on the cutting part 1 is used, the rotation direction of the workpiece 9 is the same, which can effectively reduce the need to stop and change the tool during tool change. The rotation direction of the workpiece 9 improves work efficiency.

In this embodiment, the structure in which the cutting portion 1 and the shank portion 2 are integrally formed is a tool holder. It should be noted that, in other embodiments, the cutting part 1 and the shank part 2 may also be an assembled structure.

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 . This arrangement can ensure that the tool can process blind holes without the need for avoidance space, and one turning insert will not interfere with the other. A blade interferes. (The stepped inserts in the prior art can only process through holes. When one insert is processed, the other insert needs to protrude out of the hole)

In this embodiment, the shank 2 is provided with a first inner cooling hole 7 for cooling the first turning insert 5 , and the first inner cooling hole 7 extends into the first chip flute 12 . The shank 2 is provided with a second inner coolant hole 8 for cooling the second turning insert 6 , and the second inner coolant hole 8 extends into the second chip flute 14 .

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

In this embodiment, the first turning insert 5 is installed in the first sipe 3 by a fastener. The second turning insert 6 is installed in the second sipe 4 by a fastener, and the fastener is preferably a screw. It should be noted that the first turning insert 5 and the second turning insert 6 can also be installed by means of pressing parts In the pocket, of course, the first turning insert 5 and the second turning insert 6 can also be installed in a non-detachable manner, such as welding.

Example 2

As shown in Figures 5 to 8, the multifunctional inner hole turning tool of this embodiment is different from Embodiment 1 in that:

In this embodiment, the first turning insert 5 and the second turning insert 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 of the same height as the second turning insert 6, but not co-circular.

When a shallow groove needs to be machined in the inner hole of the workpiece 9, the first turning insert 5 can be used to perform shallow groove machining on the inner hole of the workpiece 9 by simply moving the shank to the right, as shown in Figure 7; When machining the thread in the inner hole of the workpiece 9, the second turning insert 6 can be used to thread the inner hole of the workpiece 9 by simply moving the tool bar to the left without stopping and the rotation direction of the workpiece 9 remains unchanged.

Taking Embodiment 1 and Embodiment 2 as examples only with different models, the present invention is not limited to this, and the blades to be used can be freely combined according to the requirements of the workpiece to be processed.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or be modified to equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention should fall within the protection scope of the technical solutions of the present invention.

Claims (8)

1. A multifunctional inner hole turning tool, characterized in that it comprises a cutting portion (1) and a shank portion (2), wherein the cutting portion (1) comprises a first main body (11), A first chip groove (12), a second main body (13) and a second chip groove (14), the first main body (11) is provided with a first chip groove (12) on the surface intersecting with the first chip groove (12). A sipe (3), the second main body (13) is provided with a second sipe (4) on the intersecting surface of the second chip groove (14), and the first sipe (3) is installed in the A first turning insert (5), a second turning insert (6) is installed in the second pocket (4), a plane P perpendicular to the axis C of the cutting portion (1) is set, and the intersection of the axis C and the plane P is the center O, the first cutting edge (51) of the first turning insert (5) and the second cutting edge (61) of the second turning insert (6) are both in the plane P, and the first cutting edge (51) ), the second tool tip (61) and the center O are collinear. 2 . The multifunctional inner hole turning tool according to claim 1 , wherein the first turning insert ( 5 ) and the second turning insert ( 6 ) are located on the end face of the cutting portion ( 1 ). 3 . 3 . The multifunctional inner hole turning tool according to claim 1 , wherein the shank ( 2 ) is provided with a first inner cooling hole ( 7 ) for cooling the first turning insert ( 5 ). 4 . The first inner cooling hole (7) extends into the first chip flute (12). 4 . The multifunctional inner hole turning tool according to claim 1 , wherein the shank ( 2 ) is provided with a second inner cooling hole ( 8 ) for cooling the second turning insert ( 6 ). 5 . The second inner coolant hole (8) extends into the second chip flute (14). 5 . The multifunctional inner hole turning tool according to claim 1 , wherein the diameter of the cutting portion ( 1 ) is D, and the value of D ranges from 48 mm to 60 mm. 6 . 6. The multifunctional inner hole turning tool according to any one of claims 1 to 4, characterized in that: the first turning insert (5) is mounted on the first kerf (3) by a fastener or a pressing member )Inside. 7. The multifunctional inner hole turning tool according to any one of claims 1 to 4, wherein the second turning insert (6) is mounted on the second kerf (4) by a fastener or a pressing member )Inside. 8 . The multifunctional inner hole turning tool according to claim 1 , wherein the shank portion ( 2 ) and the cutting portion ( 1 ) are integrally formed. 9 .

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