CN110842290A

CN110842290A - Multi-step PCD chip breaking reamer

Info

Publication number: CN110842290A
Application number: CN201911166054.4A
Authority: CN
Inventors: 陈利锋
Original assignee: CHANGSHU WANKE FINE TOOLS Co Ltd
Current assignee: CHANGSHU WANKE FINE TOOLS Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-02-28

Abstract

The invention relates to a multi-step PCD chip breaking reamer which is used for processing soft aluminum material products and comprises a reamer handle and a reamer body. The cutter body and the cutter handle are coaxially arranged integrally, and the cutter body comprises a fourth cutter body, a third cutter body, a second cutter body and a first cutter body which are sequentially arranged from one end of the cutter handle to a far position and have gradually reduced outer diameters; the outer edge of the fourth cutter body is asymmetrically provided with at least two first blades, the outer edge of the third cutter body is asymmetrically provided with at least two third blades, the outer edge of the second cutter body is asymmetrically provided with at least two second blades, and the outer edge of the first cutter body is provided with a plurality of first blades; the second blade and the third blade are positioned on the same plane, and the plane where the fourth blade is positioned is vertical to the plane where the third blade or the second blade is positioned. In the machining process, the cut broken chips can smoothly move towards the direction of the cutter handle in enough space and are arranged outside the hole, so that the broken chips are prevented from being wound on each blade or each cutter body.

Description

Multi-step PCD chip breaking reamer

Technical Field

The invention relates to the field of reamers, in particular to a multi-step PCD chip breaking reamer.

Background

A reamer is a rotating tool with one or more teeth for removing a thin layer of metal from the surface of a machined hole. The reamer is used for reaming drilled (or reamed) holes on a workpiece, mainly for improving the machining precision of the holes and reducing the roughness of the surfaces of the holes, is a tool for finish machining and semi-finish machining of the holes, and generally has small machining allowance.

The multi-step reamer of prior art according to common processing technology, can present the aluminium bits during processing soft aluminium product and become the hair threadiness, constantly and easily twine to the handle of a knife terminal surface and be the nest form, can block the dead rupture cutter, twine behind the bits cutter card and block and die and make the interior pore wall scrape the flower easily, influence the precision of product.

Disclosure of Invention

The invention aims to provide a multi-step PCD chip breaking reamer which is beneficial to smooth chip removal.

In order to achieve the purpose, the invention adopts the technical scheme that:

the invention provides a multi-step PCD chip breaking reamer which is used for processing aluminum material products and is characterized by comprising the following components in percentage by weight:

a knife handle;

the cutter body and the cutter handle are integrally and coaxially arranged, and the cutter body comprises a fourth cutter body, a third cutter body, a second cutter body and a first cutter body which are sequentially arranged from one end of the cutter handle to a far position and have gradually reduced outer diameters; the outer edge of the fourth cutter body is asymmetrically provided with two fourth blades, the outer edge of the third cutter body is asymmetrically provided with two third blades, the outer edge of the second cutter body is asymmetrically provided with two second blades, and the outer edge of the first cutter body is provided with a plurality of first blades; the second blade and the third blade are positioned on the same plane, and the plane where the fourth blade is positioned is vertical to the plane where the third blade or the second blade is positioned.

Further, the second cutter body, the third cutter body and the fourth cutter body are all flat.

Furthermore, the fourth blade has two and asymmetrically distribute in the outer fringe of fourth cutter body and extend to beyond its distal end face, all have the second chamfer on the fourth blade, the inclined plane of second chamfer and the contained angle of axial lead are 55~ 65.

Further, the third blade has two and is asymmetrically distributed on the outer edge of the third cutter body and extends to beyond the distal end surface thereof.

Further, the second blade has two and is asymmetrically distributed on the outer edge of the second cutter body and extends to beyond the distal end surface thereof.

Further, the first blades are four and distributed on the outer edge of the first cutter body and extend to beyond the free ends of the first blades, two of the first blades and two of the blades on the second cutter body or the third cutter body are in the same plane, and the other two of the first blades and two of the fourth blades are in the same plane; the rake face of first blade all has first chamfer, the inclined plane of first chamfer with the contained angle of first blade terminal surface is 13~ 15.

Furthermore, the cutter body still includes one at least chip groove, the chip groove from first cutter body periphery face bending extends to on the fourth cutter body periphery face, the chip groove is close to first blade, second blade, third blade and fourth blade.

Further, the chip grooves are provided with four channels.

Furthermore, the tool also comprises an inner cooling hole, wherein the inner cooling hole comprises an inner cooling main hole and an inner cooling branch hole, the inner cooling main hole sequentially extends from the free end of the tool handle to the first tool body, the inner cooling branch hole is communicated with the inner cooling main hole, and the inner cooling branch hole respectively extends and is opened near the first tool bit, the second tool bit, the third tool bit and the fourth tool bit.

Furthermore, the fourth tool body forms a transition surface towards the tool holder in a smooth transition mode, an included angle between the transition surface and the axial lead is 40-45 degrees, and the tool holder is cylindrical.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the multi-step PCD chip breaking reamer, a second blade on a second cutter body and a third blade on a third cutter body are positioned on the same plane, and a fourth blade on a fourth cutter body is vertical to the planes of the second blade on the second cutter body and the third blade on the third cutter body; therefore, the blade is not in one direction, the cut-off chips are not in one direction, and enough space can be provided for smoothly moving towards the direction of the tool holder, so that the chips can be better removed;

simultaneously, first blade, second blade, third blade and fourth blade all adopt asymmetric design for in the course of working, the chip-breaking that surely goes out can have sufficient space smoothly to walk towards the handle of a knife direction, and the hole is gone outside arranging, avoids the chip-breaking to twine each blade or each cutter body.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic view of a multi-step PCD chip breaking reamer in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a multi-step PCD chip breaker reamer of FIG. 1 turned 90;

FIG. 3 is a left side view of a multi-step PCD chip breaking reamer of FIG. 1.

Wherein the reference numerals are as follows:

1. a knife handle;

2. a cutter body; 21. a first cutter body; 22. a second blade body; 23. a third blade body; 24. a fourth blade body; 25. a first blade; 26. a second blade; 27. a third blade; 28. a fourth blade; 29. a chip groove; 40. a first chamfer; 41. and (7) second chamfering.

3. An internal cooling hole; 31. and (5) internally cooling the main hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the multi-step PCD chip breaking reamer described in the present embodiment is used for processing soft aluminum material products, and includes a shank 1 and a body 2.

The cutter body 2 and the cutter handle 1 are coaxially arranged integrally, and the cutter body 2 comprises a fourth cutter body 24, a third cutter body 23, a second cutter body 22 and a first cutter body 21 which are sequentially arranged from one end of the cutter handle 1 to a far position and have gradually reduced outer diameters; the outer edge of the fourth cutter body 24 is asymmetrically provided with two fourth blades 28, the outer edge of the third cutter body 23 is asymmetrically provided with two third blades 27, the outer edge of the second cutter body 22 is asymmetrically provided with two second blades 26, and the outer edge of the first cutter body 21 is provided with a plurality of first blades 25; the second blade 26 and the third blade 27 lie in a plane, and the fourth blade 28 lies in a plane perpendicular to the plane of the third blade 27 or the second blade 26.

The second cutter body 22, the third cutter body 23 and the fourth cutter body 24 are flat; the second cutter body 22 and the third cutter body 23 are perpendicular to the fourth cutter body 24.

The fourth blades 28 are two and asymmetrically distributed on the outer edge of the fourth cutter body 24 and extend to beyond the distal end surface thereof, the fourth blades 28 are all provided with second chamfers 41, and the included angle between the inclined surfaces of the second chamfers 41 and the axial line is 55-65 degrees, specifically 60 degrees in the embodiment; and since the fourth hole needs to be chamfered, a second chamfer 41 is provided on the fourth insert 28 to facilitate the chamfering.

The third blade 27 has two and is asymmetrically distributed on the outer edge of the third cutter body 23 and extends beyond the distal end surface thereof.

The second blade 26 has two and is asymmetrically distributed on the outer edge of the second cutter body 22 and extends beyond the distal end surface thereof.

The first blades 25 have four and are distributed on the outer edge of the first cutter body 21 and extend to beyond the free ends thereof, wherein two of the first blades 25 are positioned on the same plane with two of the second blades 26 on the second cutter body 22 or two of the third blades 26 on the third cutter body 23, and the other two of the first blades 25 are positioned on the same plane with two of the fourth blades 28; the rake face of the first blade 25 is provided with a first chamfer 40, and the included angle between the inclined plane of the first chamfer 40 and the end face of the first blade 25 is 13-15 degrees, specifically 15 degrees; the first chamfer 40 serves as a transition to avoid an easy edge break caused by the first blade 25 being too sharp.

The cutter body further comprises at least one chip groove 29, the chip groove 29 extends from the outer peripheral surface of the first cutter body 21 to the outer peripheral surface of the fourth cutter body 24 in a bending mode, and the chip groove 29 is close to the first blade 25, the second blade 26, the third blade 27 and the fourth blade 28. The chip groove 29 has four channels. So that the aluminum scraps cut by the first, second, third and

fourth blades

25, 26, 27 and 28 are discharged and discharged out of the hole in the direction of the shank 1.

Still include interior cold hole 3, interior cold hole 3 include certainly 1 free end of handle of a knife to first cutter body 21 extends in proper order the interior cold king-hole 31, with the interior cold king-hole of interior cold king-hole 31 intercommunication, interior cold king-hole extends respectively and the opening in first blade 25, second blade 26 third blade 27 with near fourth blade 28. So as to cool or lubricate the first, second, third and

third blades

25, 26, 27 and 27, and has the internal cooling hole 3, so that the chip removal and cooling effects are better, and the cutting speed is improved more rapidly.

The fourth cutter body 24 to the handle of a knife 1 is rounding off and forms the transition face, the contained angle of transition face and axial lead is 40~45, specifically is 45 to guarantee its aesthetic property, just the handle of a knife 1 is cylindrical.

The first cutter body 21 has an outer diameter of 4.5-6.5 cm and a length of 10-14 cm, wherein the outer diameter of the first cutter body 21 is 5.6cm and the length of 11.8cm in the embodiment.

The outer diameter of the second cutter body 22 is 7-9 cm, and the length is 15.5-19.5 cm, wherein the outer diameter of the second cutter body 22 is 5.6cm and the length is 11.8cm in the embodiment.

The outer diameter of the third cutter body 23 is 11-15 m, and the length is 11-13 cm, wherein the outer diameter of the third cutter body 23 is 12.98cm, and the length is 10.95cm in this embodiment.

The outer diameter of the fourth cutter body 24 is 16-20 cm, and the length is 28.5-32.5 cm, wherein the outer diameter of the fourth cutter body 24 is 18cm, and the length is 33.55cm in the embodiment.

In this embodiment, the first blade 25 of the first cutter body 21 is used for reaming a first hole, the second blade 26 of the second cutter body 22 is used for reaming a second hole, the third blade 27 of the third cutter body 23 is used for reaming a third hole, and the fourth blade 28 of the fourth cutter body 24 is used for reaming a fourth hole.

In this embodiment: the second cutter body 22 and the third cutter body 23 of the present embodiment are in a same plane, and both the second cutter body 22 and the third cutter body 23 are perpendicular to the fourth cutter body 24; the plane of the second blade 26 on the second cutter body 22 is in the same plane as the plane of the third blade 27 on the third cutter body 23, the plane of the fourth blade 28 on the fourth cutter body 24 is perpendicular to the plane of the second blade 26 on the second cutter body 22 or the plane of the third blade 27 on the third cutter body 23, two of the first blades 25 are in the same plane as the two second blades 26 on the second cutter body 22 or the two third blades 27 on the third cutter body 23, and the other two of the first blades 25 are in the same plane as the plane of the two of the fourth blades 28; therefore, the cutter body is not in a plane, the blade is not in one direction, the cut-off chips are not in one direction, and enough space can be provided for smoothly moving towards the direction of the cutter handle, so that the chips can be better removed;

meanwhile, the first blade 25, the second blade 26, the third blade 27 and the fourth blade 28 are designed asymmetrically, so that cutting resistance is reduced powerfully, cut broken chips can have enough space to smoothly move towards the direction of the tool holder 1 in the machining process and are discharged out of the hole, and the broken chips are prevented from being wound on each blade or each tool body;

further, the chip discharge groove 29 is arranged in a long strip shape and is close to the first blade 25, the second blade 26, the third blade 27 and the fourth blade 28, so that aluminum chips cut by the first blade 25, the second blade 26, the third blade 27 and the fourth blade 28 are discharged along the chip discharge groove 29 in the direction of the tool holder 1 and are discharged outside the hole.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. A multi-step PCD chip breaking reamer for processing aluminum material products, comprising:

a knife handle;

2. The multi-step PCD chip breaking reamer of claim 1, wherein: the second cutter body, the third cutter body and the fourth cutter body are all flat.

3. The multi-step PCD chip breaking reamer of claim 2, wherein: the fourth blades are asymmetrically distributed on the outer edge of the fourth cutter body and extend to a position beyond the distal end face of the fourth cutter body, the fourth blades are provided with second chamfers, and the included angle between the inclined faces of the second chamfers and the axial lead is 55-65 degrees.

4. The multi-step PCD chip breaking reamer of claim 3, wherein: the third blades are asymmetrically distributed on the outer edge of the third cutter body and extend to exceed the distal end surface of the third cutter body.

5. The multi-step PCD chip breaking reamer of claim 4, wherein: the second blades are asymmetrically distributed on the outer edge of the second cutter body and extend to exceed the distal end surface of the second cutter body.

6. The multi-step PCD chip breaking reamer of claim 5, wherein: the first blades are four and distributed on the outer edge of the first cutter body and extend to the free end of the first blades, two first blades and two second blades on the second cutter body or two third blades on the third cutter body are positioned on the same plane, and the other two first blades and two fourth blades are positioned on the same plane; the rake face of first blade all has first chamfer, the inclined plane of first chamfer with the contained angle of first blade terminal surface is 13~ 15.

7. The multi-step PCD chip breaking reamer of claim 6, wherein: the cutter body still includes one at least chip groove, the chip groove certainly first cutter body periphery face crooked extend to on the fourth cutter body periphery face, the chip groove is close to first blade, second blade, third blade and fourth blade.

8. The multi-step PCD chip breaking reamer of claim 7, wherein: the chip groove is provided with four channels.

9. The multi-step PCD chip breaking reamer of claim 1, wherein: still include interior cold hole, interior cold hole include certainly handle of a knife free end to first blade extends in proper order interior cold king-hole, with interior cold king-hole that interior cold king-hole communicates, interior cold king-hole extends respectively and the opening in first blade second blade third blade with near the fourth blade.

10. The multi-step PCD chip breaking reamer of claim 1, wherein: the fourth cutter body to the handle of a knife is rounding off and forms the transition face, the contained angle of transition face and axial lead is 40~45, just the handle of a knife is cylindrical.