TWM514918U - Tool - Google Patents

Abstract

The utility model discloses a cutting tool configured to conveniently remove a protective film from a workpiece. The cutting tool includes a main body and a cutting portion arranged in one end of the main body. The cutting portion includes a main cutting portion which including a plurality of cutting edges. The cutting edges are arranged along circumferential direction of the main body and are spaced from each other. Each cutting edge is aslant arranged at a predetermined angle to an axial direction of the main body. Each cutting edge is defined a notch along a radial direction of the main body. The cutting tool of the utility model can effectively improve the efficiency of removing the protective film.

Description

Tool

The present invention relates to a tool, and more particularly to a tool that facilitates film removal.

In the process of cutting, drilling, etc. of the product, in order to prevent the generated waste from splashing on the surface of the product and causing scratches on the product, a protective film is usually attached to the surface of the product. After the product is processed, the protective film needs to be torn off.

The prior art mainly adopts an artificial method, and uses a masking glue to adhere the protective film on the surface of the product one by one. After the protective film is adhered, the protective film is removed. However, this method may sometimes require multiple times of adhesion to the protective film in order to adhere the protective film, which is cumbersome and inefficient.

In order to overcome the disadvantages of the foregoing prior art, the object of the present invention is to provide a tool capable of effectively improving the efficiency of film removal.

A cutter for conveniently removing a film body on a surface of a product, comprising a cutter body and a cutting portion disposed at one end of the cutter body. The cutting portion includes a main cutting portion, and the main cutting portion includes a plurality of cutting edges, and the plurality of cutting edges are spaced apart along the circumferential direction of the cutter. Each of the cutting edges is disposed at a predetermined angle with respect to a central axis of the cutter body, and each of the cutting edges is provided with a notch in a radial direction of the cutter.

Preferably, the vertical distance of the notch from the end face of the cutting edge away from the body is equal to the depth of the product to be machined.

Preferably, each of the cutting edges includes a rake face formed on one side of the cutting edge, a flank face formed on the other side of the cutting edge, and a chip discharge face connected to the rake face.

Preferably, the cutter further includes an auxiliary cutting portion that is disposed adjacent to the main cutting portion in the direction of the central axis of the cutter body.

Preferably, the secondary cutting portion has a cross-sectional area greater than a cross-sectional area of the main cutting portion.

Preferably, the auxiliary cutting portion includes a plurality of blade portions, and the plurality of blade portions are disposed in a coplanar manner with the plurality of cutting edges.

Preferably, each of the blade portions includes a front blade surface formed on one side of the blade portion, a rear blade surface formed on the other side of the blade portion, and a secondary chip surface connected to the front blade surface.

Compared with the prior art, the tool of the present invention uses a plurality of cutting edges to cut a product to which a film body is attached, and each of the cutting edges is provided with a notch. When the cutting edge cuts the product, the notch will form a avoidance position for the film body, avoiding the cutting of the film body by the tool. At the same time, due to the rotation of the cutter, the rotational force of the cutting edge will tear the membrane body, and the cutter can partially separate the membrane body from the product during the cutting process of the product, thereby effectively improving the efficiency of the membrane removal.

1 is a schematic structural view of a tool according to a preferred embodiment of the present invention.

Figure 2 is a top plan view of the tool shown in Figure 1.

Fig. 3 is an enlarged schematic view showing a partial structure of the cutter shown in Fig. 1.

The present invention will be described in detail below in conjunction with the specific embodiments illustrated. However, the embodiments do not limit the present invention, and the structures, methods, or functional changes made by those skilled in the art in accordance with the embodiments are included in the scope of the present invention.

Referring to FIG. 1, a preferred embodiment of the present invention provides a tool 100. The cutter 100 includes a cutter body 10, a shank 20, and a cutting portion 30.

The body 10 is substantially cylindrical and has a circular cross section. The body 10 has a central axis a. When the cutter 100 performs cutting, the center axis a of the cutter body 10 is rotated as a rotation axis. The body 10 includes a front end 11 and a rear end 12. It can be understood that the cross section of the cutter body 10 can also be rectangular, triangular or other polygonal shape.

The shank 20 is formed on the rear end 12 of the cutter body 10, which may be in the form of a straight shank or in the form of a taper shank for connecting the cutter 100 to the spindle of a numerically controlled machine tool (not shown) to keep the machining time. The stability of the tool 100.

The cutting portion 30 is formed on the front end 11 of the blade body 10 and includes a main cutting portion 31 and an auxiliary cutting portion 32. The main cutting portion 31 and the sub-cutting portion 32 have a common central axis a with the cutter body 10. The main cutting portion 31 and the sub-cutting portion 32 are disposed adjacent to each other in the direction of the central axis a of the blade body 10, and the main cutting portion 31 is located at the end of the entire tool 100. In addition, the cross-sectional area of the main cutting portion 31 is smaller than the cross-sectional area of the auxiliary cutting portion 32. The main cutting portion 31 is for cutting a cutting portion of a product (not shown), and the auxiliary cutting portion 32 is for cutting a burr generated in the cutting direction at the edge of the cutting portion of the product.

Referring to FIG. 2 , the main cutting portion 31 includes a first cutting edge 311 , a second cutting edge 312 , and a third cutting edge 313 . It can be understood that the number of cutting edges included in the main cutting portion 31 can also be set to any number according to production requirements. In the present embodiment, in the direction of rotation of the tool 100, that is, in the direction indicated by the arrow in FIG. 2, the first cutting edge 311, the second cutting edge 312, and the third cutting edge 313 are circumferentially spaced apart, and A cutting edge 311, a second cutting edge 312, and a third cutting edge 313 are all in the form of straight edges. The first cutting edge 311 includes a rake face 3111 formed on one side thereof, a flank face 3112 formed on the other side thereof, and a chip discharge face 3113 connected at an angle to the rake face 3111. The structure of the second cutting edge 312 and the third cutting edge 313 is the same as that of the first cutting edge 311.

Referring to FIG. 3, the rake face 3111 is inclined at an angle to the central axis a. The flank face 3112 includes a first flank face 3114, a second flank face 3115 disposed at an obtuse angle to the first flank face 3114, and a third flank face 3116 disposed at an obtuse angle to the second flank face 3115. It can be understood that the number of flank faces 3112 can also be any number. The chip discharge surface 3113 is used to retract the debris generated when the tool 100 is in operation, and the chip discharge surface 3113 extends obliquely from the end face 33 of the cutting portion 30 away from the shank 20 to the outer surface of the auxiliary cutting portion 32.

The first cutting edge 311 is provided with a notch 3117 in a direction parallel to the radial direction of the cutter 100. The vertical distance of the notch 3117 from the end face 33 of the main cutting portion 31 is equal to the depth to be processed of the product, so that the first cutting edge 311 is fed from the side of the product, and when the product is processed, the notch 3117 forms a avoidance position, and the surface of the product is protected. The film (not shown) is just housed in the notch 3117, and the first cutting edge 311 does not cut into the protective film. At the same time, since the first cutting edge 311 is rotated about the central axis a, the rotational force of the first cutting edge 311 tears the protective film, thereby detaching the protective film from the product portion.

After the cutting process is completed for a plurality of products, the protective film on the surface of the plurality of products can be blown off at one time by the air gun, which is efficient and labor-saving.

The auxiliary cutting portion 32 includes a first blade portion 321 , a second blade portion 322 , and a third blade portion 323 . It can be understood that the number of cutting edge portions included in the auxiliary cutting portion 32 corresponds to the number of cutting edges included in the main cutting portion 31, and may be any number. The first blade portion 321 is disposed coplanar with the first cutting edge 311, and includes a front blade surface 3211 formed on one side thereof, a rear blade surface 3212 formed on the other side thereof, and a secondary chip surface connected to the front blade surface 3211. 3213. The front blade face 3211 is formed by extending the rake face 3111. An end portion of the flank face 3112 away from the end face 33 extends toward the outer circumferential surface of the blade body 10. The trailing edge surface 3212 includes a first rear blade surface 3214, a second rear blade surface 3215 disposed at an obtuse angle to the first rear blade surface 3214, and a third rear blade surface 3216 disposed at an obtuse angle to the second rear blade surface 3215. It can be understood that the back blade surface 3212 can also be any number. The angle between the first rear blade surface 3214 and the first flank surface 3114, the angle between the second rear blade surface 3215 and the second flank surface 3115, and the angle between the third rear blade surface 3216 and the third flank surface 3116 are both obtuse angles. . The secondary chip surface 3213 is formed by the chip discharge surface 3113 extending toward the outer circumferential surface of the blade body 10, and the waste generated by the product cutting process is discharged from the chip discharge surface 3113 to the outside of the cutter 100 via the secondary chip surface 3213. The structure of the second blade portion 322 and the third blade portion 323 is the same as that of the first blade portion 321 .

The tool 100 can be made of a suitable material depending on its use. In general, the preferred materials are cemented carbides and high speed steels having good strength and toughness. Further, various hard films may be formed on the surfaces of the first cutting edge 311, the second cutting edge 312, and the third cutting edge 313 to improve the cutting performance of the cutter 100. A hard film such as titanium carbide (TiC), titanium aluminum nitride (AlTiN), titanium aluminum nitride (TiAlN) or titanium oxynitride (TiCN) may be used depending on the application of the tool 100.

It is to be understood that the auxiliary cutting portion 32 may be used only as a connecting portion connecting the blade body 10 and the main cutting portion 31 without providing a cutting edge.

The above-described cutter 100 includes a main cutting portion 31 and a sub-cutting portion 32 for cutting a portion where the product is to be processed. The main cutting portion 31 includes a plurality of cutting edges 311 disposed at equal intervals along the circumference of the cutter 100. The plurality of cutting edges 311 are each provided with a notch 3117. The distance between the notch 3117 and the end face 33 of the main cutting portion 31 is equal to the product to be processed. The depth is fed by the side of the product by the cutting edge 311, and the product is processed. The notch 3117 forms a relief position, and the protective film on the surface of the product is received in the notch 3117, and the first cutting edge 311 does not cut into the protective film. In addition, since the first cutting edge 311 rotates about the central axis a, the rotational force of the first cutting edge 311 tears the protective film, so that the protective film can be partially detached from the product during the processing of the product, when After a plurality of products have been subjected to the cutting process, the protective film on the surface of the plurality of products can be blown off at one time by the air gun, which can effectively improve the film removal efficiency.

It is to be understood that the description is not to be construed as a The technical solutions in the various embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The detailed description of one of the series listed above is only for the specific description of the feasibility of the present invention, and is not intended to limit the scope of the present invention. Changes are to be covered by this creation.

100‧‧‧Tools

10‧‧‧Knife body

20‧‧‧Knife

30‧‧‧cutting department

11‧‧‧ front end

12‧‧‧ Backend

31‧‧‧Main cutting department

32‧‧‧Auxiliary cutting department

311‧‧‧First cutting edge

312‧‧‧second cutting edge

313‧‧‧ Third cutting edge

3111‧‧‧ rake face

3112‧‧‧Back surface

3113‧‧‧ Chip surface

3114‧‧‧First flank

3115‧‧‧second flank

3116‧‧‧3rd flank

33‧‧‧ end face

3117‧‧ ‧ gap

321‧‧‧ first blade

322‧‧‧second blade

323‧‧‧third blade

3211‧‧‧ front blade

3212‧‧‧Back face

3213‧‧‧ Deputy chip surface

3214‧‧‧First rear blade

3215‧‧‧second rear facet

3216‧‧‧ Third rear face

100‧‧‧Tools

10‧‧‧Knife body

20‧‧‧Knife

30‧‧‧cutting department

11‧‧‧ front end

12‧‧‧ Backend

31‧‧‧Main cutting department

32‧‧‧Auxiliary cutting department

Claims (10)

A cutter for conveniently removing a film body on a surface of a product, comprising a cutter body and a cutting portion disposed at one end of the cutter body, wherein the cutting portion includes a main cutting portion, and the main cutting portion includes a plurality of cutting edges The plurality of cutting edges are circumferentially spaced apart along the tool, each cutting edge being disposed at a predetermined angle from a central axis of the tool body, and each of the cutting edges is provided with a notch in a radial direction of the tool. The tool of claim 1, wherein the notch is at a vertical distance from the end face of the cutting edge away from the body to be equal to the depth of the product to be machined. The tool of claim 1, wherein each of the cutting edges includes a rake face formed on one side of the cutting edge, a flank face formed on the other side of the cutting edge, and the rake face Connected chip surface. The tool of claim 3, wherein the flank face comprises a first flank face, a second flank face disposed at an obtuse angle to the first flank face, and an obtuse angle with the second flank face The third flank. The tool according to claim 3, wherein the cutter further includes an auxiliary cutting portion that is disposed adjacent to the main cutting portion in a direction of a central axis of the cutter body. The tool of claim 5, wherein the secondary cutting portion has a cross-sectional area greater than a cross-sectional area of the main cutting portion. The tool of claim 5, wherein the auxiliary cutting portion includes a plurality of blade portions, the plurality of blade portions being disposed coplanar with the plurality of cutting edges, respectively. The tool of claim 7, wherein each of the blade portions includes a front blade face formed on one side of the blade portion, a rear blade face formed on the other side of the blade portion, and the front blade face The secondary chip surface of the connection. The tool of claim 8, wherein the rear blade surface is formed by an end of the flank face extending toward an outer circumferential surface of the blade body, and the rear blade face is connected at an obtuse angle to the flank face. The tool of claim 8, wherein the secondary chip faces are formed by the chip faces extending toward an outer circumferential surface of the body.