Cutter capable of inhibiting burrs on curved surface

Abstract

The cutter for restraining the curved surface burrs comprises an installation part and a threaded part which are connected into a whole, the threaded part is provided with a spiral chip removal groove and a plurality of milling grooves which are arranged oppositely, the spiral chip removal groove is formed in the threaded part in a left-hand spiral mode, the milling grooves are formed in the threaded part in a left-hand spiral mode, and the spiral chip removal groove and the milling grooves are formed in the threaded part in a left-hand spiral mode. A plurality of milling grooves are formed in the threaded part, a corresponding milling face is formed in each milling groove, the milling faces are sequentially connected in the circumferential direction of the threaded part, the two ends of the spiral chip removal groove are communicated with the milling grooves respectively, and every two adjacent milling faces jointly form a spiral milling blade part. When the thread part rotates by a circle, burrs of a groove hole of the shell part are removed through milling of the multiple spiral milling blade parts, so that the cutting face of the side wall of the groove hole of the shell part is smoother, and the appearance quality of the shell part is better; and the spiral chip groove is arranged in a left-handed manner, so that the spiral chip groove pushes chips to be discharged downwards, and the influence of the chips on the surface of the shell part is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of parts processing, and in particular to a tool for suppressing flashing of curved surfaces. Background Art

[0002] Aluminum alloy has the characteristics of low density, good mechanical properties, good processing performance, excellent heat transfer and excellent corrosion resistance. Aluminum alloy is often used to make curved shell parts. Curved shell parts need to be processed with slots by CNC machine tools during the processing process.

[0003] CNC machine tools are loaded with cutting tools to mill slots in curved shell parts. When existing cutting tools are used to mill the sidewalls of the slots, due to the curved surface of the shell part, the milled surface of the slot sidewalls is prone to flashing, which affects the appearance quality of the curved shell part.

[0004] For example, the twist drill disclosed in the comparative document CN201720694989.X includes a blade and a shank. The blade and the shank are coaxial cylinders with the same axis as the central axis. The blade is provided with two spiral chip grooves, a cutting edge and a secondary flank face respectively. The line where the chip groove and the cutting edge face intersect forms the secondary cutting edge. The end face of the blade is provided with a main flank face and a chip breaking step. The line where the main flank face and the chip breaking step intersect forms the main cutting edge. This solution increases the deformation of the chips cut by the main cutting edge when they flow through the chip breaking step, thereby reducing the tool breakage caused by chip entanglement. However, this solution cannot solve the problem that after the slot hole is milled in the curved shell part, the milling surface of the slot side wall is prone to flashing. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a tool that can smooth the milling surface of a curved part, reduce the impact of chips, and suppress the flashing of the curved surface.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A cutting tool for suppressing curved surface flashing comprises a mounting portion and a threaded portion, wherein the mounting portion and the threaded portion are integrally connected.

[0008] The threaded portion is provided with spiral chip grooves and milling grooves arranged in opposite directions. The spiral chip grooves are spirally arranged on the threaded portion. There are multiple milling grooves, and multiple milling grooves are spirally arranged on the threaded portion. The spiral chip grooves and multiple milling grooves are all spirally arranged in left-hand spirals. Each of the milling grooves is formed with a corresponding milling surface. Multiple milling surfaces are connected in sequence along the circumference of the threaded portion. Both ends of the spiral chip groove are connected to one of the milling grooves respectively. Every two adjacent milling surfaces together form a spiral milling blade portion, and the spiral milling blade portion is used for milling the surface of a part.

[0009] In one embodiment, an end surface is formed at one end of the threaded portion away from the mounting portion, and the end surface is a planar structure.

[0010] In one embodiment, an inwardly tapered surface is formed on one end of the threaded portion facing away from the mounting portion, and the inwardly tapered surface is connected to the end surface and one end of the plurality of milling surfaces facing away from the mounting portion.

[0011] In one embodiment, the spiral chip removal groove has an arc surface structure.

[0012] In one embodiment, the spiral chip flute is longer than the milling flute.

[0013] In one embodiment, the angle between two adjacent milling surfaces is 140° to 160°.

[0014] In one embodiment, the radius of the threaded portion is 4 mm to 8 mm.

[0015] In one embodiment, the length of the threaded portion is 20 mm to 30 mm.

[0016] In one embodiment, the mounting portion is provided with a through slot.

[0017] In one embodiment, there are multiple through slots, and the multiple through slots are spaced apart along the circumference of the mounting portion.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] The above-mentioned tool for suppressing curved surface burrs contacts the side walls of the slot hole of the curved shell part through continuous rotation of multiple spiral milling blades. When the threaded part rotates one circle, the slot hole of the curved shell part is milled by multiple spiral milling blades, so that the threaded part has a better effect of removing the burrs of the curved shell part, thereby making the side walls of the slot hole of the curved shell part smoother and the appearance quality of the curved shell part better; the rotation direction of the mounting part and the threaded part rotates in the clockwise direction, and the spiral chip groove is set in the left hand direction, so that the spiral chip groove pushes the chips to be discharged downward, thereby avoiding the influence of the chips on the surface of the curved shell part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 Schematic diagram of the structure of a cutting tool for suppressing curved surface flashing according to an embodiment;

[0022] Figure 2 for Figure 1 The cross-sectional view of the tool along line AA for suppressing surface flash is shown;

[0023] Figure 3 for Figure 1 Another structural schematic diagram of a tool for suppressing surface flashing is shown;

[0024] Figure 4 for Figure 1 The schematic diagram of the structure of the tool that suppresses surface flash to remove the flash of the part groove is shown. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0029] like Figures 1 to 4 As shown, it is a tool 10 for suppressing curved surface flashing according to an embodiment of the present disclosure, comprising a mounting portion 100 and a threaded portion 200. The mounting portion 100 and the threaded portion 200 are integrally connected, and the integrally formed mounting portion 100 and the threaded portion 200 have a higher connection strength.

[0030] Furthermore, the threaded portion 200 is provided with a spiral chip removal groove 201 and a milling groove 202 arranged in opposite directions, so that the spiral chip removal groove 201 and the milling groove 202 are not coplanar on the threaded portion, the spiral chip removal groove 201 is spirally arranged on the threaded portion 200, the number of the milling groove 202 is multiple, and the multiple milling grooves 202 are spirally arranged on the threaded portion 200, and the spiral chip removal groove 201 and the multiple milling grooves 202 are all spirally arranged in a left-handed spiral, so that the multiple milling grooves The milling groove 202 is formed into a thread with the left side higher than the right side. Each of the milling grooves 202 is formed with a corresponding milling surface 210. Multiple milling surfaces 210 are connected in sequence along the circumference of the threaded portion 200. The two ends of the spiral chip groove 201 are respectively connected to one of the milling grooves 202. Every two adjacent milling surfaces 210 jointly form a spiral milling edge portion 220, so that the threaded portion 200 forms a strip-shaped thread structure. The spiral milling edge portion 220 is used for milling the surface of the part.

[0031] In this embodiment, after the curved shell part is drilled with a slot, burrs remain on the side walls of the slot of the curved shell part. The tool 10 for suppressing the burrs is loaded on a CNC machine tool. The CNC machine tool drives the mounting part 100 and the threaded part 200 to rotate, so that the multiple spiral milling blades 220 rotate continuously. The multiple spiral milling blades 220 contact the side walls of the slot of the curved shell part in turn. When the threaded part 200 rotates one circle, the slot passes through the milling of the multiple spiral milling blades 220, so that the burrs remaining on the side walls of the slot of the curved shell part are removed. The rotation direction of the mounting part 100 and the threaded part 200 rotates in the clockwise direction, and the spiral chip groove 201 is arranged in a left-handed spiral so that the spiral chip groove 201 pushes the chips to move downward when it rotates.

[0032] The above-mentioned tool 10 for suppressing curved surface burrs continuously rotates through multiple spiral milling blades 220 to contact the side walls of the slot hole of the curved shell part. When the threaded part 200 rotates one circle, the slot hole of the curved shell part is milled by multiple spiral milling blades 220, so that the threaded part 200 has a better effect of removing the burrs of the curved shell part, thereby making the side walls of the slot hole of the curved shell part smoother and the appearance quality of the curved shell part better; the rotation direction of the mounting part 100 and the threaded part 200 rotates in the clockwise direction, and the spiral chip groove 201 is set in the left hand direction, so that the spiral chip groove 201 pushes the chips to be discharged downward, thereby avoiding the influence of the chips on the surface of the curved shell part.

[0033] like Figure 1 and Figure 3As shown, in one embodiment, the end of the threaded portion 200 facing away from the mounting portion 100 is formed with an end surface 230, which is a planar structure. In this embodiment, if the CNC machine tool controls the mounting portion 100 and the threaded portion 200 to be misaligned, the end surface 230 may come into contact with the surface of the curved shell part. The planar structure of the end surface 230 reduces damage to the curved shell part by the end surface 230.

[0034] like Figure 1 and Figure 3 As shown, in one embodiment, an inwardly tapered surface 240 is formed on one end of the threaded portion 200 facing away from the mounting portion 100. The inwardly tapered surface 240 is connected to the end surface 230 and the end of the plurality of milling surfaces 210 facing away from the mounting portion 100. In this embodiment, a planar end surface 230 is formed on one end of the threaded portion 200, resulting in a sharp edge. The end surface 230 is prone to scratching the surface of a curved shell part. The inwardly tapered surface 240 causes one side of the end surface 230 to tilt inward, reducing contact with the curved shell part, thereby reducing the risk of the end surface 230 scratching the surface of the curved shell part.

[0035] like Figure 2 As shown, in one embodiment, the spiral chip flute 201 is a curved surface structure. In this embodiment, the surface of the spiral chip flute 201 with a curved surface structure is smooth, which reduces the resistance between the spiral chip flute 201 and the debris, allowing the debris to fall smoothly along the spiral chip flute 201.

[0036] like Figure 1 As shown, in one embodiment, the spiral chip flute 201 is longer than the milling flute 202. In this embodiment, when the threaded portion 200 penetrates the slot of the curved shell part, the top of the milling flute 202 is parallel to the curved shell part, and the spiral chip flute 201 is longer than the milling flute 202. This leaves sufficient space in the spiral chip flute 201, allowing chips to be discharged from the spiral chip flute 201, thereby avoiding the problem of increased wear caused by chip accumulation.

[0037] like Figure 2As shown, in one embodiment, the angle between two adjacent milling surfaces 210 is 140-160 degrees. In this embodiment, the angle between the two adjacent milling surfaces 210 is B. When the milling surface 210 is less than 140 degrees, fewer milling surfaces 210 are formed on the threaded portion 200, and the spiral milling blades 220 formed by the two adjacent milling surfaces 210 have a higher protruding height. The spiral milling blades 220 wear the curved shell part more, which easily enlarges the slot of the curved shell part, thereby affecting the accuracy of the slot. When the milling surface 210 is greater than 160 degrees, more milling surfaces 210 are formed on the threaded portion 200, and the spiral milling blades 220 formed by the two adjacent milling surfaces 210 have a shorter protruding height. The spiral milling blades 220 wear the curved shell part less, which reduces the efficiency of grinding the slot of the curved shell part.

[0038] like Figure 1 As shown, in one embodiment, the radius of the threaded portion 200 is 4mm-8mm. In this embodiment, when the radius of the threaded portion 200 is greater than 8mm, the slot is an arc hole and the slot is small, and the spiral milling blade 220 is likely to increase the slot opening when removing the flash from the slot. When the radius of the threaded portion 200 is less than 4mm, the strength of the threaded portion 200 is insufficient, and the problem of breakage is likely to occur during the process of removing the flash. The radius of the threaded portion 200 is 4mm-8mm. By selecting a tool 10 with a suitable aperture to suppress curved surface flash to process the corresponding slot, the flash removal effect of the side wall surface of the slot is better.

[0039] like Figure 1 As shown, in one embodiment, the length of the threaded portion 200 is 20 mm to 30 mm. In this embodiment, the tool 10 for suppressing curved surface flash is primarily used to remove flash from thin-walled curved shell parts. The CNC machine tool controls the tool 10 to move up and down the thin-walled curved shell part, allowing the threaded portion 200 to quickly remove flash from the slot of the thin-walled curved shell part during the up and down movement.

[0040] like Figure 1 and Figure 3 As shown, in one embodiment, the mounting portion 100 is provided with a through slot 101. In this embodiment, the through slot 101 facilitates the operator to clamp the mounting portion 100 with a tool, thereby facilitating the disassembly and assembly of the tool 10 for suppressing curved surface flashing.

[0041] like Figure 1 and Figure 3As shown, in one embodiment, the number of the through slots 101 is multiple, and the multiple through slots 101 are spaced apart along the circumference of the mounting portion 100. In this embodiment, the multiple through slots 101 are spaced apart along the circumference of the mounting portion 100, which facilitates the operator to clamp the mounting portion 100 in different directions using a tool, further facilitating the disassembly and assembly of the tool 10 that suppresses curved surface flashing.

[0042] Compared with the prior art, the present disclosure has at least the following advantages:

[0043] The above-mentioned tool 10 for suppressing curved surface burrs continuously rotates through multiple spiral milling blades 220 to contact the side walls of the slot hole of the curved shell part. When the threaded part 200 rotates one circle, the slot hole of the curved shell part is milled by multiple spiral milling blades 220, so that the threaded part 200 has a better effect of removing the burrs of the curved shell part, thereby making the side walls of the slot hole of the curved shell part smoother and the appearance quality of the curved shell part better; the rotation direction of the mounting part 100 and the threaded part 200 rotates in the clockwise direction, and the spiral chip groove 201 is set in the left hand direction, so that the spiral chip groove 201 pushes the chips to be discharged downward, thereby avoiding the influence of the chips on the surface of the curved shell part.

[0044] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A cutting tool for suppressing curved surface flashing, comprising a mounting portion and a threaded portion, wherein the mounting portion and the threaded portion are integrally connected, characterized in that: The threaded portion is provided with spiral chip grooves and milling grooves arranged in opposite directions. The spiral chip grooves are spirally arranged on the threaded portion. There are multiple milling grooves, and multiple milling grooves are spirally arranged on the threaded portion. The spiral chip grooves and multiple milling grooves are all spirally arranged in left-hand spirals. Each of the milling grooves is formed with a corresponding milling surface. Multiple milling surfaces are connected in sequence along the circumference of the threaded portion. Both ends of the spiral chip groove are connected to one of the milling grooves respectively. Every two adjacent milling surfaces together form a spiral milling blade portion, and the spiral milling blade portion is used for milling the surface of a part.

2. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: An end surface is formed on one end of the threaded portion away from the mounting portion, and the end surface is a planar structure.

3. The cutting tool for suppressing curved surface flashing according to claim 2, characterized in that: An inwardly tapered surface is formed on one end of the threaded portion away from the mounting portion, and the inwardly tapered surface is connected to the end surface and one end of the plurality of milling surfaces away from the mounting portion.

4. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The spiral chip removal groove has an arc surface structure.

5. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The spiral chip flute is longer than the milling flute.

6. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The angle between two adjacent milling surfaces is 140°-160°.

7. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The radius of the threaded portion is 4 mm to 8 mm.

8. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The length of the threaded portion is 20 mm to 30 mm.

9. The cutting tool for suppressing curved surface flashing according to claim 1, characterized in that: The mounting portion is provided with a through slot.

10. The cutting tool for suppressing curved surface flashing according to claim 9, characterized in that: There are a plurality of through slots, and the plurality of through slots are spaced apart along the circumference of the mounting portion.

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