TW201440927A - Disposable cutting blade - Google Patents

Abstract

The present invention provides a disposable cutting blade having a narrow and slender body with a symmetric configuration, which comprises a top face and a side face for forming a cutting edge. On an opposite edge, a top face and a side face having corresponding shapes are formed, whereby the disposable cutting blade includes two cutting edges. The other two edges of the disposable cutting blade are provided to be a positioning slot. The disposable cutting blade is receivable in a receiving slot defined in a blade holder and is secured in position with screws. The tool holder can be fixed to a disposable cutting tool in a way similar to that of a conventional disposable cutting tool, or can be locked to a cutting tool having a receiving slot, so as to achieve the advantages of small size, cost saving, and easy replacement.

Description

Disposable blade

The invention is an improvement of a cutting edge, in particular a disposable blade with a small size and a disposable design.

The cutting tool generally used, as shown in the twenty-first figure, mainly includes two parts of the tool body 50 and the blade 80. The blade 80 of the conventional cutting tool is combined with the tool body 50 by welding, so the blade 80 After the cutting edge is passivated, the cutting edge of the insert 80 must be reground. When grinding, the insert 80 and the tool body 50 are both ground. When the insert 80 is ground and cannot be used, the entire tool is discarded; however, the cost of the tool and Under the consideration of changing the speed of the tool, the discarding structure is born, and the blade 80 is no longer ground in the way of discarding the blade structure. Although most of the blade material is not used and wasted, the blade is fast and the blade is fast. The port passivation requires no grinding, the use is simpler, and the tool body 50 can be reused. Therefore, the tool body 50 can be designed to be more professional and rigid, so that the cutting tool enters the era of discarded tools.

However, with the advancement of technology, the requirements for the strength and hardness of metal materials are increased. Therefore, the hardness and wear resistance of the materials of the cutting tools to be processed must also be increased, and the price will increase accordingly. Usually, only the cutting blades are used for cutting. At the edge of the cutting edge, after the passivation of the cutting edge, the new cutting edge must be converted. The volume of the cutting edge is very low in the volume of the blade body, and the application rate is obviously low. Therefore, the cost of the blade 80 is high, resulting in low economic efficiency of the discarded blade. Relative processing costs have also increased.

Although the cutting speed of the conventional cutting blade can save the tool change time and increase the production rate, the disposable blade only uses the cutting edge portion, the blade volume accounts for the volume of the blade body, and the application rate is obviously low, and is discarded. With the different materials, the price of the blade increases, and the relative processing cost also increases.

The disposable blade of the present invention has an elongated shape and a correspondingly shaped body, and comprises a top surface and a side surface forming a cutting edge, and the other end is formed into a top surface and a side surface of the opposite shape, so that the discarding The cutting edge forms two cutting edges, and the other two corners of the disposable blade are set as a positioning groove, and the disposable blade can be accommodated in the receiving groove of the tool holder and locked by screws, and the seat is obtained by the blade. It is locked to the disposable tool as a general discarding blade or locked to a tool with a receiving groove.

Compared with the conventional disposable blade, the disposable blade of the invention has a difference of 6.7 times, so the invention can reduce a lot of material costs, and the replacement of the disposable blade is very simple and fast, and can also be used in use. The tool holder is combined with the traditional disposable tool structure and can be used in a wide range of applications such as turning tools, drilling tools, chamfering tools and milling tools without the need to change tools.

10‧‧‧Knife

11‧‧‧ top surface

12‧‧‧ bottom

13‧‧‧Side side

14‧‧‧ Positioning perforation

15‧‧‧ accommodating slots

151‧‧‧through slot

152‧‧‧ positioning cam

153‧‧‧Slot bottom

154‧‧‧ gap

16‧‧‧ screw holes

161‧‧‧ cone hole

162‧‧‧ positioning ring hole

20‧‧‧Disposable blade

200‧‧‧ cutting edge

21‧‧‧ top surface

22‧‧‧ side sides

23‧‧‧ positioning slot

24‧‧‧ side wall

25‧‧‧ bottom

26‧‧‧ Positioning arc slot

30‧‧‧ screws

31‧‧‧Cone head

32‧‧‧ positioning flange

40‧‧‧ screws

50‧‧‧Tool body

60‧‧‧ milling head

61‧‧‧Tool holder

62‧‧‧ accommodating slots

63‧‧‧Slot bottom

70‧‧‧Cutter

71‧‧‧ knife end

80‧‧‧blade

90‧‧‧ milling cutter

α‧‧‧Side corner

‧‧‧‧角角

γ‧‧‧After angle

Δ‧‧‧bevel

P‧‧‧ thrust

S‧‧‧Support

The first figure is a three-dimensional system diagram of the present invention

The second figure is a front view of the disposable tool holder of the present invention.

The third figure is a front view of the disposable blade of the present invention.

The fourth figure is a combination plan diagram of the disposable knife seat and the discarded blade of the present invention.

The fifth figure is a mechanical analysis diagram of the disposable blade locking of the present invention.

The sixth figure is a mechanical analysis diagram of the force of the cutting edge cutting of the present invention.

The seventh figure is a schematic view of the invention applied to a milling cutter

The eighth figure is a front view of the invention applied to the milling cutter

The ninth diagram is a schematic diagram of the combination of the invention applied to the milling cutter

The tenth figure is an embodiment of the triangular shape disposable blade holder of the present invention

The eleventh figure is a combination diagram of the triangular shape discarding seat and the blade of the present invention

The twelfth embodiment is an embodiment of the positioning groove of the positioning cam and the discarding blade of the present invention in a stepped shape.

The thirteenth embodiment is an embodiment in which the shape of the positioning groove of the positioning cam and the discarded blade of the present invention is inclined

Figure 14 is a front view of the disposable tool holder with positioning function of the present invention

The fifteenth figure is a top view of the disposable tool holder with positioning function of the present invention

Figure 16 is a front view of the disposable blade with positioning function of the present invention

The seventeenth figure is a top view of the disposable blade with the positioning function of the present invention

The eighteenth figure is a schematic diagram of the screw plane with the positioning function of the present invention

The nineteenth figure is a combination diagram of the disposable knife seat and the blade with the positioning function of the present invention

Figure 20 is a diagram showing an embodiment of the present invention applied to a chamfering cutter

The twenty-first figure is a schematic diagram of a conventional welding tool

Referring to the first and third figures, the disposable blade 20 of the present invention has an elongated shape and a correspondingly shaped body, and includes a top surface 21 and a side surface 22 forming a cutting edge 200 and the other end. The top surface 21 and the one side surface 22 of the opposite shape are formed to make the disposable blade 20 shape The two cutting edges 200 have a suitable side angle α, and the other two corners of the disposable blade 20 are set as a positioning groove 23. According to the embodiment, the positioning groove 23 is obtained. The arcuate blade 20 is received in the receiving groove 15 of the seat 10 and is locked by a screw 30 which is locked to the discarded tool as a general discarding blade. Or locked to the tool provided with the receiving groove 15.

Referring to the first and second figures, the disposable blade 20 of the present invention can be disposed on a holder 10. The holder 10 is made of a conventional disposable blade. The holder 10 includes a top surface 11 and a bottom surface 12. And a body surrounded by the plurality of side faces 13, a central position of the seat 10 is provided with a positioning through hole 14 having a suitable side angle α, wherein the side 10 of the seat 10 is An accommodating groove 15 is provided in the corner of the top surface 11 , and the accommodating groove 15 is received by a disposable blade 20 , and at least one or more screw holes are provided corresponding to the top surface 11 of the accommodating groove 15 . 16. The receiving slot 15 is provided with a slot 151 corresponding to the position of the screw hole 16.

Referring to the first, second and third figures, the receiving groove 15 of the tool holder 10 is provided with positioning cams 152 at two corresponding corners of the slotted end thereof. According to the embodiment, the corresponding side is opposite. The positioning protrusion 152 has an arc-like appearance, and the shape of the positioning groove 23 of the disposable blade 20 is symmetrical, so that the positioning protrusion 152 has been embedded in the positioning groove 23 to achieve the effect of clamping and fixing. A side wall surface 24 is defined in the accommodating groove 15 adjacent to the positioning groove 23. The side wall surface 24 is disposed at an angle β with the vertical line, and the angle β is the same as the side angle α of the disposable blade 20.

Referring to the fourth figure, the disposable blade 20 is received in the blade holder 10 and is locked by a screw 30. As shown in FIG. 5, the blade holder 10 is disposed by the slot 151. The positioning cam 152 and the side wall surface 24 generate an elastically deformable clamping function. When the screw 30 is locked, the locking force L is generated by the tenon 152 and the side wall surface 24, and the corresponding protrusion 152 is generated. Wear and wear The bottom surface 25 of the groove 15 generates a supporting force S by which the locking force of the disposable blade 20 is clamped by the supporting force S, so that the disposable blade 20 is firmly locked with the seat 10. .

Referring to the sixth figure, the tool holder 10 is locked with the tool body 50 by the screw 40, and when the tool body 50 is cut, a cutting force F is generated at the cutting edge 200 of the disposable blade 20, and the cutting force is generated. The bottom surface 12 and the side surface 13 of the seat 10 generate a supporting force S to obtain a complete support.

The mechanical analysis of the force generated by the clamping and fixing of the blade holder 10 and the disposable blade 20 is achieved, and the blade holder 10 and the disposable blade 20 are optimally supported, so that the blade holder 10 and the disposable type are The blade 20 has excellent locking rigidity and rigidity to withstand cutting forces.

Referring to the seventh to ninth embodiments, the present invention is applied to an embodiment of a milling cutter which is directly to the milling head 60. The milling head 60 is provided with at least two or more than one of the holders. 61. The same accommodating groove 62 is disposed in the shank 61. The accommodating groove 62 is disposed in the disposable blade 20 and is locked by the screw 30. When the milling head 60 is locked to the shank 70, The blade end 71 is pressed against the disposable blade 20 to limit the degree of freedom of the disposable blade 20 in the axial direction, thereby reinforcing the rigidity of the disposable blade 20 in the axial direction and improving the cutting rigidity of the milling cutter in the axial direction.

Please refer to the tenth and eleventh figures, which are the appearance shape examples of the tool holder 10 of the present invention. In addition to the square shape, the conventional disposable tool also has a triangular appearance, which is suitable for use in various types of cutting tools and cutting environments. The seat 10 of the present invention can be applied in both square and triangular shapes, and can be continuously used for the square or triangular discarded tool currently used, without the need to change the tool, and the seat 10 is not worn, so The blade holder 10 has a relatively long service life without any impact, and only the disposable blade 20 needs to be replaced.

Referring to the first and third figures, the disposable blade 20 has a symmetrical shape on both sides of the positioning groove 22, so the disposable blade 20 has two cutting edges 200, one end of which is After the cutting edge 200 is passivated, the user can replace the cutting edge 200 at the other end to continue to use, and the design of the two cutting edges 200 can increase the economic value of the disposable blade 20 and reduce the cost.

Please refer to the twelfth to thirteenth drawings, which are the shape changing embodiments of the positioning protrusion 152 of the holder 10 of the present invention and the positioning groove 23 of the disposable blade 20, as shown in the twelfth figure, the holder The positioning groove 152 of the 10 and the positioning groove 23 of the disposable blade 20 are in a stepped structure design; as shown in the thirteenth figure, the positioning of the positioning tongue 152 and the disposable blade 20 of the holder 10 The shape of the groove 23 is a slanted structure design; whether it is an arc-shaped, stepped or slanted structure design, the degree of freedom of sliding of the disposable blade 20 can be restricted in the horizontal or vertical direction, but After the screw lock is fixed, the degree of freedom of sliding back and forth is also limited, and the position groove 23 can be completely locked. When applied to the milling cutter tool, the blade end face limitation of the cutter bar is further matched, and the discarding can be completely restricted. The freedom of the blade 20 to slide in all directions.

Referring to the eighth figure, the design of the disposable blade 20 of the present invention is slightly changed in shape, especially the shape of the top surface 21. To match various materials and changing cutting conditions, the blade must be back inclined. The corner design is to change the cutting ability of the cutting edge. The disposable blade 20 of the present invention is provided with a suitable rear bevel angle γ on the top surface 21, and the sipe bottom surface 63 of the cutter seat 61 (or the knife seat 10) of the milling cutter ( 153) It is also necessary to match the rear bevel γ with an equal inclination angle δ, so that the disposable blade 20 can obtain better locking force in addition to better cutting ability.

Referring to the fourteenth and fifth figures, the screw hole 16 of the tool holder 10 of the present invention is provided with a positioning ring hole 162, and the position of the screw hole 16 is appropriately adjusted, and the receiving groove 15 is The positioning of the position of the cutting blade 20 is formed. The taper hole 161 of the screw hole 16 is provided with a positioning ring hole 162, and the positioning ring hole 162 is interlaced with the receiving groove 15 to generate a hole in the receiving groove 15. The notch 154, such as the holder 10 has two screw holes 16 and only one of them has a notch 154, or both The notch 154 is determined according to the degree to which the screw 30 can be locked. As shown in FIG. 14 , only the positioning ring hole 162 of the screw hole 16 and the accommodating groove 15 are staggered to generate a hole in the accommodating groove 15 . The notch 154; as shown in the sixteenth and seventeenth views, the positioning blade 20 is also provided with a positioning arc groove 26 at a position relative to the notch 154. The positioning arc groove 26 is processed by a milling cutter 90. .

Referring to FIG. 18, the screw 30 is provided with a positioning flange 32 at the conical head 31. Referring to FIG. 19, when the disposable blade 20 is received in the receiving groove 15 of the holder 10. The locating flange 32 of the screw 30 is received by the notch 154 into the positioning arc groove 26 of the disposable blade 20, thereby limiting the disposable blade 20 in the accommodating groove 15 The degree of freedom of the inner slide, and by the locking of the screw 30 and the other screw 30, the disposable blade 20 is forced by the conical head 31 of the screw 30, so that the disposable blade 20 can be firmly fixed without slipping. It is a concern and can improve the cutting rigidity of the disposable blade 20.

Referring to the twentieth embodiment, the accommodating groove 15 and the disposable blade 20 of the present invention are applied to the embodiment of the chamfering tool, so that it can be applied to the implementation of the drilling tool in addition to the turning tool and the milling tool. Therefore, the application of the present invention is very extensive, and it is an innovative and breakthrough design reform.

By the foregoing description, the present invention makes an innovative and breakthrough reform design on the disposable cutter, and changes the conventional discarding blade to a smaller disposable blade. The reformed design of the present invention is used in the cutting edge. The ratio of the volume to the number of times of use is 1.5/10, which is 6.7 times different. Therefore, the invention can reduce a lot of material costs, and the replacement of the disposable blade is very simple and fast, and can also be used in use. The tool holder is combined with the traditional disposable tool structure, no need to change tools, and can be applied to a wide range of applications such as turning tools, drilling tools, chamfering tools and milling tools.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the present invention may be made without departing from the technical features of the present invention.

10‧‧‧Knife

11‧‧‧ top surface

12‧‧‧ bottom

13‧‧‧Side side

14‧‧‧ Positioning perforation

15‧‧‧ accommodating slots

151‧‧‧through slot

152‧‧‧ positioning cam

16‧‧‧ screw holes

20‧‧‧Disposable blade

200‧‧‧ cutting edge

21‧‧‧ top surface

22‧‧‧ side sides

23‧‧‧ positioning slot

30‧‧‧ screws

Claims (13)

A disposable blade having a relatively long shape and a correspondingly shaped body, comprising a top surface and a side surface forming a cutting edge, and the other end forming a top surface and a side of the opposite shape The side edge mask has a suitable side angle, and the other two corners of the disposable blade are set as a positioning groove, and the disposable blade can be accommodated in the receiving groove of the knife seat and locked by a screw solid. The disposable blade according to claim 1, wherein the tool holder is a body surrounded by a top surface, a bottom surface and a plurality of side surfaces, and a central position of the holder is provided with a positioning perforation. The side surface has a suitable side angle, wherein a corner of the side between the side surface and the top surface of the holder is provided with a receiving groove for receiving a disposable blade and corresponding to the receiving The top surface of the groove is provided with at least one screw hole, and the receiving groove has a through groove corresponding to the position of the screw hole. The disposable blade according to claim 1, wherein the positioning groove of the disposable blade is set to be arc-shaped. The discarding blade according to claim 1, wherein the positioning groove of the disposable blade is stepped. The discarding blade according to claim 1, wherein the positioning groove of the disposable blade is set to be beveled. The disposable blade according to claim 2, wherein the positioning protrusion of the holder is set to be arc-shaped. The discarding blade according to claim 2, wherein the positioning protrusion of the seat is stepped. The discarding blade of the second aspect of the patent application, wherein the positioning of the seat is convex It is a beveled person. The disposable blade according to claim 2, wherein the receiving groove provided by the tool holder is directly disposed on the seat of the general tool. The disposable blade according to claim 1, wherein a position of the taper hole of the screw hole of the locking and disposing blade is provided with a positioning ring hole. The disposable blade according to claim 10, wherein the positioning ring hole and the receiving groove are staggered to form a gap in the receiving groove. The disposable blade of claim 1, wherein the disposable blade is provided with a positioning arc groove relative to the notch position. The disposable blade of claim 1, wherein the screw is provided with a positioning flange at the conical head.