Cutter

Abstract

A cutter comprises a cutter handle which is of a cylinder structure; the tool bit is integrally formed at the axial end of the tool handle and comprises a cutting edge portion, the cutting edge portion is of a cuboid-shaped blade structure extending in the axial direction of the tool handle, the width of the cross section of the cutting edge portion is smaller than the diameter of the tool handle, and the cutting edge portion comprises a plurality of cutting edges continuously distributed in the length direction of the cutting edge portion. The two protruding parts are symmetrically arranged on the two sides of the cutting edge part in the width direction, the protruding parts extend in the axial direction of the cutter handle, the extending length of the protruding parts is smaller than the axial length of the cutting edge part, and a chip removal space is formed between the protruding parts and the cutting edge part. By the adoption of the cutter, the rectangular groove can be machined in the part to contain the key lock screw sleeve.

Description

Technical Field

[0001] This application relates to the field of precision part processing, and particularly to a tool for precision machining of titanium alloy parts. Background Art

[0002] In recent years, the technology of titanium alloy castings has developed rapidly, making the material cost of core components in aerospace and aviation lower and lower, and the application fields are becoming more and more extensive. Among them, the processing of the installation key lock wire sleeve in the part belongs to cold processing. After the key on the key lock wire sleeve is press-fitted, it is easy to accumulate on the surface of the part, thus interfering with the mating installation of other parts.

[0003] In the prior art, a rectangular groove is generally used to accommodate the key lock wire sleeve. In the prior art, a slotting tool is generally used to process various grooves of parts. Such a slotting tool mainly processes straight grooves, T-shaped grooves, dovetail grooves, semi-circular grooves or arc grooves, but cannot process rectangular grooves, resulting in the inability to machine some special parts. Summary of the Invention

[0004] In view of this, this application provides a tool, including: a tool shank, which is in a cylindrical structure; a tool head, integrally formed at the axial end of the tool shank, and the tool head includes: a cutting edge portion, the cutting edge portion is in the shape of a cuboid blade structure extending along the axial direction of the tool shank, the cross-sectional width thereof is smaller than the diameter of the tool shank, the cutting edge portion includes a plurality of cutting edges continuously distributed along its length direction, two protruding portions, symmetrically arranged on both sides in the width direction of the cutting edge portion, the protruding portions extend along the axial direction of the tool shank and the extension length is smaller than the axial length of the cutting edge portion, and a chip removal space is formed between the protruding portions and the cutting edge portion.

[0005] With the above specific structure, by cooperating with a three-axis machine tool to control the tool in the Z-axis direction, a specific rectangular keyway can be machined.

[0006] As a possible implementation, the chip removal space includes a pair of chip removal grooves, respectively formed between the cutting edge portion and the corresponding protruding portion, and the chip removal grooves extend along the axial direction of the tool shank and have a circular arc cross-section.

[0007] As a possible implementation, the cutting edge portion further includes a cutting end portion, arranged at the end of the cutting edge portion, the axial extension length of the cutting end portion exceeds the end face of the protruding portion, and the cutting end portion and the cutting edge portion are integrally formed with the same material.

[0008] As a possible implementation, a relief groove is provided on each of the two side surfaces in the thickness direction of the cutting edge portion, and the relief groove extends from the position adjacent to the tool shank towards the cutting end portion and penetrates to the starting end of the cutting end portion.

[0009] As a possible implementation, the cutting end portion includes: an end face cutting structure disposed on the end face of the cutting end portion, having two symmetrically arranged first inclined cutting surfaces and a first non-cutting surface therebetween; two lateral cutting structures respectively disposed on two side surfaces in the width direction of the cutting edge portion, and each lateral cutting structure having two symmetrically arranged second inclined cutting surfaces and a second non-cutting surface therebetween.

[0010] As a possible implementation, the second inclined cutting surface extends from the cutting end portion towards the tool shank direction, and a part of its extending path is covered by the axial projection area of the chip removal groove.

[0011] As a possible implementation, third inclined cutting surfaces are provided at both edge portions in the thickness direction of the cutting end portion.

[0012] As a possible implementation, the third inclined cutting surface is connected to the second inclined cutting surface through an arc cutting surface.

[0013] As a possible implementation, an installation guiding chamfer is provided along the circumference of the end face of the tool shank.

[0014] As a possible implementation, anti-slip patterns are provided on the surface of the tool shank. Description of the Drawings

[0015] The following further describes each technical feature of the present application and the relationships between them with reference to the drawings. The drawings are exemplary, and some technical features are not shown in actual proportion, and some conventional technical features in the technical field to which the present application belongs and which are not essential for understanding and implementing the present application may be omitted in some drawings, or some technical features that are not essential for understanding and implementing the present application are additionally shown. That is, the combination of the technical features shown in the drawings is not used to limit the present application. In addition, throughout the present application, the content referred to by the same reference numerals is also the same. The specific description of the drawings is as follows: Figure 1 Schematic diagram of a tool related to an embodiment of the present application; Figure 2 Front view of a tool related to an embodiment of the present application; Figure 3 Top view of a tool related to an embodiment of the present application; Figure 4 Left view of a tool related to an embodiment of the present application; Figure 5 Drawing of a tool related to an embodiment of the present application for machining a rectangular keyway.

[0016] Explanation of the reference numerals: 10 - tool handle; 11 - installation guide chamfer; 20 - tool head; 210 - blade portion; 211 - cutting end portion; 2111 - first inclined blade surface; 2112 - first uncut blade surface; 2113 - second inclined blade surface; 2114 - second uncut blade surface; 2115 - third inclined blade surface; 2116 - arc blade; 212 - avoidance groove; 220 - protrusion; 230 - chip removal groove; D - rectangular keyway. DETAILED DESCRIPTION

[0017] First, the tool involved in the embodiment of the present application is to solve the problem of machining a rectangular keyway on a specific hole diameter. Figure 5 As shown, the rectangular keyway D is in the bore and cannot be machined by a conventional slot cutter.

[0018] Below, the specific implementation methods of the present application are described in detail with reference to the accompanying drawings.

[0019] The present application provides a cutting tool, such as Figure 1 As shown, it is composed of a knife handle 10 and a knife head 20.

[0020] Among them, Figure 2 , 3 As shown, the handle 10 is a cylindrical structure. The end surface of the handle 10 is provided with a mounting guide chamfer 11 along the circumference.

[0021] Among them, Figure 1 As shown, the cutter head 20 is integrally formed at the axial end of the handle 10. The cutter head 20 includes: 1. Blade portion 210: The blade portion 210 is a rectangular parallelepiped blade structure extending along the axial direction of the handle 10, and its cross-sectional width is smaller than the diameter of the handle 10. The blade portion 210 includes a plurality of cutting edges continuously distributed along its length direction.

[0022] 2. Two protrusions 220 are symmetrically arranged on both sides of the width direction of the blade portion 210. The protrusions 220 extend along the axial direction of the handle 10 and the extension length is less than the axial length of the blade portion 210. A chip removal space is formed between the protrusions 220 and the blade portion 210.

[0023] Among them, Figure 1 , 2 As shown in FIGS. 3 and 4 , the chip removal space includes a pair of chip removal grooves 230, which are respectively formed between the blade portion 210 and the corresponding protrusion 220. The chip removal grooves 230 extend axially along the shank 10 and have a circular arc cross section.

[0024] Among them, Figure 1 , 2As shown in FIGS. 3, the cutting edge portion 210 further includes a cutting end portion 211 disposed at the end of the cutting edge portion 210. The axial extension length of the cutting end portion 211 exceeds the end face of the protruding portion 220. And the cutting end portion 211 and the cutting edge portion 210 are integrally formed of the same material. On each of the two side faces in the thickness direction of the cutting edge portion 210, there is provided an avoidance groove 212. The avoidance groove 212 extends from a position adjacent to the tool handle 10 towards the cutting end portion 211 and penetrates to the starting end of the cutting end portion 211.

[0025] Among them, as Figure 1 , 4 shown, the cutting end portion 211 includes: 1. An end face cutting structure disposed on the end face of the cutting end portion 211, having two first inclined cutting faces 2111 symmetrically arranged and a first non-cutting face 2112 therebetween.

[0026] 2. Two side cutting structures respectively disposed on the two side faces in the width direction of the cutting edge portion 210. Each side cutting structure has two second inclined cutting faces symmetrically arranged and a second non-cutting face 2114 therebetween.

[0027] In this embodiment, the first non-cutting face 2112 is a plane. Additionally, in other embodiments, the first non-cutting face 2112 can also be a concave surface.

[0028] In this embodiment, the second non-cutting face 2114 is a plane. Additionally, in other embodiments, the second non-cutting face 2114 can also be a concave surface.

[0029] Among them, as Figure 2 shown, the second inclined cutting face 2113 extends from the cutting end portion 211 towards the tool handle 10, and a part of its extending path is covered by the axial projection area of the chip removal groove 230. On the two side edges in the thickness direction of the cutting end portion 211, there are provided third inclined cutting faces 2115. The third inclined cutting faces 2115 are connected to the second inclined cutting faces 2113 through an arc cutting face 2116.

[0030] In this embodiment, the surface of the tool handle 10 is provided with anti-slip patterns.

[0031] In this embodiment, the tool is made of cemented carbide and is used for machining titanium alloy parts.

[0032] In this embodiment, the surface of the tool has a coating, and the coating is processed by physical vapor deposition technology.

[0033] In summary, the tool involved in the embodiments of the present application can machine a rectangular keyway D in the hole diameter. The rectangular keyway D prevents the locking keys from piling up on the part surface after the press-fitted key locking wire sleeve, interfering with the assembly of the customer's parts, and reduces the repair cost caused by the piling up of the locking keys. For example, the cost of using a machine tool milling cutter to pile up the wire sleeve and the cost of the wire sleeve itself, and the time cost consumed by reinstalling the wire sleeve.

[0034] The term "comprising" used throughout this application should not be construed as limited to the content listed thereafter; it does not exclude other structural elements or steps.

[0035] It can be understood that those skilled in the art can combine the features mentioned in one or more of the embodiments mentioned throughout this application with the features in other embodiments in any appropriate manner to implement this application.

[0036] Note that the above is only the preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments. Without departing from the technical concept of the present application, more other equivalent embodiments can be included, all of which fall within the protection scope of the present application.

Claims

1. A cutting tool, characterized in that: include: The handle is a cylindrical structure; A cutter head is integrally formed at the axial end of the handle, and the cutter head comprises: The blade portion is a rectangular blade structure extending along the axial direction of the handle, and its cross-sectional width is smaller than the diameter of the handle. The blade portion includes a plurality of cutting edges continuously distributed along its length direction. Two protrusions are symmetrically arranged on both sides of the blade portion in the width direction. The protrusions extend axially along the shank and the extension length is less than the axial length of the blade portion. A chip removal space is formed between the protrusions and the blade portion.

2. The tool according to claim 1, characterized in that The chip removal space includes a pair of chip removal grooves, which are respectively formed between the blade portion and the corresponding protruding portion. The chip removal grooves extend along the axial direction of the tool handle and have a circular arc cross section.

3. The tool according to claim 2, characterized in that The blade portion further comprises a cutting end portion, which is arranged at the end of the blade portion. The axial extension length of the cutting end portion exceeds the end surface of the protruding portion, and the cutting end portion and the blade portion are integrally formed with the same material.

4. The tool according to claim 3, characterized in that A avoidance groove is respectively provided on both sides of the blade portion in the thickness direction. The avoidance groove extends from a position adjacent to the shank toward the cutting end portion and passes through to the beginning of the cutting end portion.

5. The tool according to claim 4, characterized in that The cutting end comprises: An end face cutting structure is arranged on the end face of the cutting end portion, and has two first inclined cutting edges arranged symmetrically and a first non-cutting edge face therebetween; Two lateral cutting structures are respectively arranged on the two side surfaces in the width direction of the blade portion, and each of the lateral cutting structures has two symmetrically arranged second inclined blade surfaces and a second non-edged surface located therebetween.

6. The tool according to claim 5, characterized in that The second inclined blade surface extends from the cutting end toward the tool holder, and a portion of the extension path thereof is covered by an axial projection area of ​​the chip removal groove.

7. The tool according to claim 6, characterized in that The edges on both sides of the cutting end in the thickness direction are provided with third inclined cutting edge surfaces.

8. The tool according to claim 7, characterized in that The third inclined blade surface is connected to the second inclined blade surface via an arc blade surface.

9. The tool according to any one of claims 1 to 8, characterized in that The end surface of the tool handle is provided with a mounting guide chamfer along the circumference.

10. The tool according to claim 9, characterized in that The surface of the knife handle is provided with anti-skid patterns.

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