CN211192056U

CN211192056U - Multi-step inner hole machining multifunctional boring cutter

Info

Publication number: CN211192056U
Application number: CN201921911189.4U
Authority: CN
Inventors: 陈利锋
Original assignee: Changshu Wanke Precision Tools Co ltd
Current assignee: Changshu Wanke Precision Tools Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-08-07
Anticipated expiration: 2029-11-07

Abstract

The utility model relates to a multi-step hole processing is with multi-functional boring cutter, including handle of a knife and blade holder, handle of a knife and the coaxial setting of blade holder. The tool apron comprises a third tool body fixed at the far end of the tool handle, a second tool body detachably connected at the far end of the third tool body and a first tool body fixed at the far end of the second tool body, the outer diameter of the second tool body is larger than that of the first tool body, and the outer diameter of the third tool body is larger than that of the second tool body; the distal end part of the first cutter body is provided with a first blade, and the periphery of the first cutter body is provided with a second blade; the distal end part of the second cutter body is symmetrically provided with two third blades; the distal end part of the third cutter body is provided with a fourth blade, and the periphery of the third cutter body is provided with a fifth blade; the cutting edge of the fifth insert rake surface has a first portion that is arcuate and a second portion that extends linearly and at an angle relative to the axis. The utility model provides high machining efficiency and machining precision, reduced manufacturing cost.

Description

Multi-step inner hole machining multifunctional boring cutter

Technical Field

The utility model relates to a boring cutter field especially relates to a multi-step hole processing is with multi-functional boring cutter.

Background

The boring cutter is one of hole machining cutters, is generally a round handle, and is also commonly used in a vertical lathe for a square cutter rod of a larger workpiece, wherein the most common occasions are inner hole machining, hole expanding, profiling and the like. Tools with one or two cutting parts, specially adapted for roughing, semi-finishing or finishing existing holes. The boring tool may be used on a boring machine, a lathe or a milling machine.

The existing product needs to be processed with a step hole, and when an R port and a chamfer are processed at the outer edge of a large hole of the step hole, at least two boring cutters are usually needed to meet the requirement. Meanwhile, the existing boring cutter is heavy in weight.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-step hole processing of workable multi-step hole, R mouth and chamfer is with multi-functional boring cutter.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a multi-step hole processing is with multi-functional boring cutter, include:

a knife handle;

the tool rest comprises a third tool body fixed at the far end of the tool handle, a second tool body detachably connected at the far end of the third tool body and a first tool body fixed at the far end of the second tool body, the outer diameter of the second tool body is larger than that of the first tool body, and the outer diameter of the third tool body is larger than that of the second tool body; the distal end part of the first cutter body is provided with a first blade, and the periphery of the first cutter body is provided with a second blade; the distal end part of the second cutter body is symmetrically provided with two third blades; the distal end part of the third cutter body is provided with a fourth blade, and the periphery of the third cutter body is provided with a fifth blade; the cutting edge of the fifth insert rake surface has a first portion that is arcuate and a second portion that extends linearly and at an angle relative to the axis.

Furthermore, a mandrel extends out of the second cutter body towards the third cutter body, an installation cylinder matched with the mandrel extends out of the third cutter body towards the second cutter body, and the mandrel is installed in the installation cylinder and radially fixed through a taper screw.

Further, the outer diameter of the mounting cylinder is smaller than the outer diameters of the second cutter body and the third cutter body, and the outer diameter of the mounting cylinder is larger than or equal to the outer diameter of the first cutter body.

Furthermore, the tool also comprises an inner cooling hole, wherein the inner cooling hole comprises an inner cooling main hole and six inner cooling branch holes, the inner cooling main hole sequentially extends from the end part of the tool handle to the first tool body, the six inner cooling branch holes are communicated with the inner cooling main hole, the six inner cooling branch holes respectively extend and are opened at the first tool bit, the second tool bit, the two third tool bits, the fourth tool bit and the fifth tool bit.

Further, the third cutter body has a radial through hole.

Further, the total weight of the tool holder and the tool apron is 2.0-2.5 kg.

Further, the first cutter body has first chip flutes located adjacent to the rake surfaces of the first and second inserts, respectively; the second cutter body is provided with second chip grooves respectively positioned near the front cutter surfaces of the two third blades; and the third cutter body is provided with third chip grooves respectively positioned near the front cutter surfaces of the fourth blade and the fifth blade.

Further, the knife handle and the third knife body are integrally formed, and the first knife body and the second knife body are integrally formed.

Further, the material of handle of a knife with the third cutter body specifically is the tool steel, the material of first cutter body with the second cutter body specifically is the aluminum alloy.

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

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a multi-functional boring cutter is used in processing of multi-step hole, first hole can be processed to the first blade of first cutter body distal end portion, and the second hole of second blade processing of first cutter body periphery, and the third hole can be processed to two third blades of second cutter body distal end, and the fourth hole can be processed to the fourth blade of third cutter body distal end portion, and the chamfer and the R mouth in the drill way of the fourth hole of fifth blade processing of third cutter body periphery. The inner diameters of the first inner hole, the second inner hole, the third inner hole and the fourth inner hole are increased in sequence. The utility model discloses not only can process the hole of many steps, simultaneously, can also process chamfer and R mouth in the drill way of last hole, improved machining efficiency and machining precision greatly.

Furthermore, the second cutter body and the third cutter body can be detachably connected and can be replaced, and meanwhile, cutter bodies with other sizes can be connected to the third cutter body.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of 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 sectional view of a multi-step boring tool for inner hole machining according to an embodiment of the present invention;

FIG. 2 is a left side view of the multi-step boring tool for machining an inner hole shown in FIG. 1;

FIG. 3 is a schematic view of the first, third and fourth blades of FIG. 1;

FIG. 4 is a schematic view of the second blade of FIG. 1;

fig. 5 is a schematic view of the fifth blade of fig. 1.

Wherein the reference numerals are as follows:

1. a knife handle;

2. a tool apron; 21. a first cutter body; 22. a second blade body; 23. a third blade body; 24. a first blade; 25. a second blade; 26. a third blade; 27. a fourth blade; 28. a fifth blade; 29. A first portion; 30. a second portion; 31. a mandrel; 32. mounting the cylinder; 33. a taper screw; 34. a through hole; 35. an inner cooling main hole; 36. and (5) internally cooling the branch holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The multifunctional boring tool for processing the inner hole of the multi-step comprises a tool holder 1 and a tool apron, wherein the tool holder 1 and the tool apron are coaxially arranged.

The tool apron comprises a third tool body 23 fixed at the far end of the tool holder 1, a second tool body 22 detachably connected at the far end of the third tool body 23 and a first tool body 21 fixed at the far end of the second tool body 22, wherein the outer diameter of the second tool body 22 is larger than that of the first tool body 21, and the outer diameter of the third tool body 23 is larger than that of the second tool body 22; the distal end portion of the first cutter body 21 is provided with a first blade 24, and the outer periphery of the first cutter body 21 is provided with a second blade 25; two third blades 26 are symmetrically arranged at the distal end part of the second cutter body 22; the distal end portion of the third cutter body 23 is provided with a fourth blade 27, and the outer periphery of the third cutter body 23 is provided with a fifth blade 28; the cutting edge of the rake surface of the fifth insert 28 has a first portion 29 and a second portion 30, the first portion 29 being arcuate, the second portion 30 extending at an angle to the axis and linearly, the first portion 29 being adjacent the second tool body 22, and the second portion 30 being adjacent the shank 1.

A mandrel 31 extends from the second cutter body 22 to the third cutter body 23, a mounting cylinder 32 matched with the mandrel 31 extends from the third cutter body 23 to the second cutter body 22, and the mandrel 31 is mounted in the mounting cylinder 32 and radially fixed through a taper screw 33; so as to be replaced, and simultaneously, the third cutter body 23 can be connected with cutter bodies with other sizes, thereby greatly reducing the production cost. The outer diameter of the mounting cylinder 32 is smaller than the outer diameters of the second cutter body 22 and the third cutter body 23, and the outer diameter of the mounting cylinder 32 is greater than or equal to the outer diameter of the first cutter body 21.

Still include interior cold hole, interior cold hole include certainly 1 right-hand member portion of handle of a knife to interior cold king-hole 35 that first cutter body 21 extends in proper order, with interior cold king-hole 35 intercommunication has six interior cold branch holes 36, six interior cold branch holes 36 extend respectively and open in first blade 24 second blade 25, two third blade 26 fourth blade 27 with fifth blade 28 department. The inner cooling design is adopted, the inner cooling hole is formed, the chip removal and cooling effects are better, and the cutting speed is promoted more quickly.

The third cutter body 23 has a radial through hole 34; so that the weight of the third cutter body 23 is reduced. The total weight of the tool holder 1 and the tool apron is 2.0-2.5 kg, and the total weight of the tool holder is 2.4kg in the embodiment.

The first cutter body 21 has first chip flutes in the vicinity of the rake surfaces of the first and

second blades

24 and 25, respectively; the second cutter body 22 has second chip grooves respectively located near the rake surfaces of the two third blades 26; the third cutter body 23 has third chip grooves in the vicinity of the rake surfaces of the fourth and

fifth inserts

27 and 28, respectively.

The knife handle 1 and the third knife body 23 are integrally formed, and the first knife body 21 and the second knife body 22 are integrally formed. The material of handle of a knife 1 with third cutter body 23 specifically is the tool steel, first cutter body 21 with the material of second cutter body 22 specifically is the aluminum alloy. The first cutter body 21, the second cutter body 22 and the third cutter body 23 are all flat.

In the present embodiment, as shown in fig. 3, the first blade 24, the third blade 26, and the fourth blade 27 are all the same in structure and direction, and are triangular, the cutting edge is one of the sides, and the cutting edge faces to the left; as shown in fig. 4, the second blade 25 is square, and one angle is towards the outside, wherein the included angle between the two protruding edges and the outer wall of the second cutter body 22 is 45 °; as shown in fig. 5, the fifth blade 28 is substantially rectangular in shape with one corner cut out, the cut out portion being a cutting edge having a first portion 29 and a second portion 30, the first portion 29 being curved to facilitate R-cut machining, the second portion 30 being angled and extending linearly with respect to the axis to facilitate chamfer machining, and the lower edge of the fifth blade 28 being slightly inclined at an angle of 5 ° to the third blade body 23.

The working principle of the embodiment is as follows: the first blade 24 at the left end of the first cutter body 21 can machine a first inner hole; the second blade 25 on the periphery of the first cutter body 21 is used for processing a second inner hole; the two third blades 26 at the left end of the second cutter body 22 can machine a third inner hole; the fourth blade 27 at the left end of the third cutter body 23 can machine a fourth inner hole; the fifth insert 28 at the outer periphery of the third cutter body 23 machines a chamfer and an R-cut of the bore hole of the fourth inner bore. Wherein, the first hole, the second hole, the third hole, the fourth hole internal diameter increase in proper order. The utility model discloses not only can process the hole of many steps, simultaneously, can also improve machining efficiency and machining precision greatly at the drill way processing chamfer and the R mouth of fourth hole.

Furthermore, the second cutter body 22 and the third cutter body 23 can be detachably connected and can be replaced, and meanwhile, cutter bodies with other sizes can be connected to the third cutter body 23, so that more holes can be machined, and the production cost is greatly reduced.

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

Claims

1. The utility model provides a multi-step hole processing is with multi-functional boring cutter which characterized in that includes:

a knife handle;

2. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: the second cutter body extends to the third cutter body to form a mandrel, the third cutter body extends to the second cutter body to form an installation cylinder matched with the mandrel, and the mandrel is installed in the installation cylinder and radially fixed through a taper screw.

3. The multi-functional boring cutter for multi-step inner hole machining according to claim 2, characterized in that: the outer diameter of the mounting cylinder is smaller than the outer diameters of the second cutter body and the third cutter body, and the outer diameter of the mounting cylinder is larger than or equal to the outer diameter of the first cutter body.

4. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: still include interior cold hole, interior cold hole include certainly handle of a knife tip to first blade extends in proper order interior cold main bore, with interior cold main bore intercommunication has six interior cold branch holes, six interior cold branch hole extend respectively and the opening in first blade second blade, two third blade fourth blade with fifth blade department.

5. The multi-functional boring cutter for multi-step bore machining according to any one of claims 1 to 4, characterized in that: the third cutter body has a radial through hole.

6. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: the total weight of the knife handle and the knife holder is 2.0-2.5 kg.

7. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: the first cutter body is provided with first chip grooves respectively positioned near the front cutter surfaces of the first blade and the second blade; the second cutter body is provided with second chip grooves respectively positioned near the front cutter surfaces of the two third blades; and the third cutter body is provided with third chip grooves respectively positioned near the front cutter surfaces of the fourth blade and the fifth blade.

8. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: the handle of a knife with third cutter body integrated into one piece, first cutter body with second cutter body integrated into one piece.

9. The multi-functional boring cutter for multi-step inner hole machining according to claim 8, characterized in that: the handle of a knife with the material of third cutter body specifically is the tool steel, first cutter body with the material of second cutter body specifically is the aluminum alloy.

10. The multi-functional boring cutter for multi-step inner hole machining according to claim 1, characterized in that: the first cutter body, the second cutter body and the third cutter body are all flat.