CN215746640U

CN215746640U - Metal ceramic milling cutter for processing liquid metal

Info

Publication number: CN215746640U
Application number: CN202121607771.9U
Authority: CN
Inventors: 咸志鹏
Original assignee: Jiangmen Zhongdao Precision Technology Co ltd
Current assignee: Jiangmen Zhongdao Wentu Precision Technology Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-02-08
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses a metal ceramic milling cutter for processing liquid metal, which comprises a cutting part and a handle part, wherein the cutting part and the handle part are made of metal ceramic materials, the cutting part is provided with a plurality of peripheral edge chip grooves which extend spirally from the front end to the handle part, the spiral angle of the peripheral edge chip grooves is 30-35 degrees, the surface of the peripheral edge chip grooves facing to the cutting rotation direction is a front cutter surface, the surface of the peripheral edge chip grooves facing away from the cutting rotation direction is a rear cutter surface, the front cutter surface and the rear cutter surface are intersected to form a peripheral edge, the rear cutter surface is provided with an eccentric arc surface close to the edge tip of the peripheral edge, the eccentric arc surface extends along the spiral of the peripheral edge chip grooves, and the width of the eccentric arc surface is 0.02-0.05 mm. The utility model has higher wear resistance and more effective cutting performance, and can ensure that the cutter can process liquid metal smoothly and greatly reduce the processing cost of the cutter; and moreover, the support and firmness of the cutting edge are enhanced, the processing precision is stable, and the surface quality is good.

Description

Metal ceramic milling cutter for processing liquid metal

Technical Field

The utility model belongs to the technical field of machining cutters, and particularly relates to a metal ceramic milling cutter for machining liquid metal.

Background

With the progress of the times and the scientific development, the requirements of human beings on various products are more and more diversified and the requirements are higher and higher, so that the common materials cannot meet the requirements. Under the prerequisite, liquid metal comes into operation, however because liquid metal itself has the metallic characteristic of high strength, high rigidity, high elasticity (difficult fracture), and is great with ordinary metallic material characteristic difference, the processing degree of difficulty is great, adopts conventional carbide material cutter to process moreover, and the cutter disability rate is high, and is with high costs, this a difficult problem that needs to solve in the trade urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a metal ceramic milling cutter which can be used for processing liquid metal, has higher wear resistance and more effective cutting performance and greatly reduces the processing cost of a cutter.

In order to achieve the above object, the present invention provides a cermet milling cutter for processing liquid metal, including a cutting portion and a shank portion formed of a cermet material, wherein the cutting portion is provided with a plurality of peripheral edge chip grooves spirally extending from a front end to the shank portion, a helix angle of the peripheral edge chip grooves is 30 to 35 °, a surface of the peripheral edge chip grooves facing a cutting rotation direction is a rake surface, a surface of the peripheral edge chip grooves facing away from the cutting rotation direction is a flank surface, the rake surface and the flank surface intersect to form a peripheral edge, the flank surface is provided with an eccentric arc surface at a position close to a tip of the peripheral edge, the eccentric arc surface extends along the spiral of the peripheral edge chip grooves, and a width of the eccentric arc surface is 0.02 to 0.05 mm.

In a preferred embodiment of the present invention, the peripheral edge has a peripheral edge rake angle and a peripheral edge relief angle, and the peripheral edge rake angle has an angle of 5 ° to 8 °; the peripheral edge relief angle includes a first peripheral edge relief angle and a second peripheral edge relief angle which are sequentially arranged from the eccentric arc surface to the flank surface, the angle of the first peripheral edge relief angle is 13 °, and the angle of the second peripheral edge relief angle is 25 °.

In a preferred embodiment of the present invention, the width of the flank face corresponding to the first peripheral cutting edge relief angle is 0.2mm to 0.25 mm.

In a preferred embodiment of the present invention, a relief is provided on a side of the second peripheral edge relief angle away from the edge tip of the peripheral edge.

In a preferred embodiment of the present invention, the peripheral edge has an outer diameter of 4mm and a core thickness of 2.2 mm.

In a preferred aspect of the present invention, an end blade is correspondingly connected to one end of the peripheral blade, which is away from the shank portion, at the cutting portion, an end blade chip groove connected to the peripheral blade chip groove is formed between two adjacent end blades, a transition arc is provided at a connection portion between the end blade and the peripheral blade, and a radius of the transition arc is 0.2 mm.

In a preferred embodiment of the present invention, the rake surface of the end blade is provided with a reinforcing blade for protecting the end blade.

As a preferable scheme of the utility model, the end blade is provided with an end blade front angle and an end blade rear angle, and the angle of the end blade front angle is 3-5 degrees; the end blade back angle includes a first end blade back angle, a second end blade back angle and a third end blade back angle which are sequentially arranged from the blade tip of the end blade to the inner side, the angle of the first end blade back angle is 3 degrees, the angle of the second end blade back angle is 8 degrees, and the angle of the third end blade back angle is 16 degrees.

In a preferred embodiment of the present invention, the width of the flank corresponding to the first end edge relief angle is 0.05mm to 0.1 mm.

In a preferred embodiment of the present invention, the end blade has an inner inclination angle, and the angle of the inner inclination angle is 1.8 ° to 2 °.

Compared with the prior art, the metal ceramic milling cutter for processing the liquid metal has the beneficial effects that: compared with the conventional hard alloy cutter, the cutter made of the metal ceramic material has higher wear resistance and more effective cutting performance, and can ensure that the cutter can process liquid metal smoothly, and meanwhile, the processing cost of the cutter is greatly reduced; and, set up the eccentric arc surface through the position that is close to the blade point of all edges at the back knife face, compare in traditional relief angle planar design, strengthened support nature, the fastness of blade, the machining precision is stable, and the product surface quality who just processes out is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

FIG. 1 is a schematic structural diagram of a cermet milling cutter for machining liquid metal according to the present invention;

FIG. 2 is a side view in the direction A of the structure shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of region B in the structure of FIG. 1;

fig. 4 is an enlarged view of a portion of the end blade in the configuration shown in fig. 1.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the machine or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

As shown in fig. 1, a cermet milling cutter for processing liquid metal according to a preferred embodiment of the present invention includes a cutting portion 1 and a shank portion 2 formed of a cermet material, wherein the cutting portion 1 is provided with a plurality of peripheral edge flutes 3 spirally extending from a tip to the shank portion 2, a helix angle θ of the peripheral edge flutes 3 is 30 ° to 35 °, a face of the peripheral edge flutes 3 facing a cutting rotation direction is a rake face 31, a face of the peripheral edge flutes 3 facing away from the cutting rotation direction is a flank face 32, the rake face 31 and the flank face 32 intersect to form a peripheral edge 4, the flank face 32 is provided with an eccentric arc face 5 at a position close to a cutting edge of the peripheral edge 4, and the eccentric arc face 5 extends along the spiral of the peripheral edge flutes 3 and has a width of 0.02mm to 0.05 mm. Therefore, compared with the conventional hard alloy cutter, the cutter made of the metal ceramic material has higher wear resistance and more effective cutting performance, and the processing cost of the cutter is greatly reduced while the cutter can be ensured to process liquid metal smoothly; and, set up eccentric arc surface 5 through the position that is close to the sword point of week sword 4 at back knife face 32, compare in traditional relief angle planar design, strengthened support nature, the fastness of blade, the machining precision is stable, and the product surface quality who just processes out is good.

Illustratively, as shown in fig. 2, the peripheral edge 4 is provided with a peripheral edge rake angle 41 and a peripheral edge relief angle 42, and the angle of the peripheral edge rake angle 41 is 5 ° to 8 °; the peripheral edge relief angle 42 includes a first peripheral edge relief angle 421 and a second peripheral edge relief angle 422 which are arranged in this order from the eccentric arc surface 5 to the flank surface 32, the angle of the first peripheral edge relief angle 421 is 13 °, and the angle of the second peripheral edge relief angle 422 is 25 °. The front angle 41 of the peripheral edge is designed to be 5-8 degrees, so that the material characteristics of the liquid metal are met, the sharpness of the cutting edge is ensured, the cutting is lighter and more stable, the cutting chips are more convenient to cut and discharge, the smoother surface quality is achieved, and the service life of the cutter is prolonged; design into two relief angle angles with week sword relief angle 42, can guarantee that week sword 4 has sufficient rigidity, provide enough space of dodging for week sword 4 simultaneously, reduce the contact friction of the back knife face 32 of week sword 4 and the machined surface on the work piece, be favorable to the cutting into of week sword 4.

Illustratively, the width of the flank surface 32 corresponding to the first peripheral edge relief angle 421 is 0.2mm to 0.25 mm. Such design can guarantee the life under the 4 normal cutting prerequisites of week sword, makes simultaneously week sword 4 have sufficient wearability and cutting force.

Illustratively, as shown in fig. 2, a side of the second peripheral edge relief angle 422 away from the tip of the peripheral edge 4 is provided with a shovel back 8. The design of the shovel back 8 increases the avoiding space of the rear knife surface 32, increases the capacity of cutting fluid and improves the cooling effect of the knife.

Illustratively, as shown in fig. 1 to 4, an end edge 6 is correspondingly connected to one end of the cutting portion 1, which is away from the shank 2, and an end edge chip groove 7 connected to the peripheral edge chip groove 3 is formed between two adjacent end edges 6, so as to facilitate the discharge of chips during cutting by the end edges 6; and a transition arc with the radius of 0.2mm is arranged at the joint of the end blade 6 and the peripheral blade 4 to prevent the tip from collapsing.

Illustratively, as shown in fig. 3, the rake surface 31 of the end edge 6 is provided with a reinforcing edge 9 for protecting the end edge 6.

Illustratively, as shown in fig. 4, the end edge 6 is provided with an end edge rake angle 61 and an end edge relief angle 62, and the angle of the end edge rake angle 61 is 3-5 °; the end edge relief angle 62 includes a first end edge relief angle 621, a second end edge relief angle 622, and a third end edge relief angle 623 that are sequentially arranged inward from the tip of the end edge 6, wherein the first end edge relief angle 621 is 3 °, the second end edge relief angle 622 is 8 °, and the third end edge relief angle 623 is 16 °. The front angle 61 of the end edge is designed to be 5-8 degrees, so that the material characteristics of liquid metal are met, the sharpness of the cutting edge is ensured, burrs, edge breakage and the like are avoided in the cutting process, the processing effect is good, and the product rejection rate is low; design end sword relief angle 62 into three relief angle, can guarantee that end sword 6 has sufficient rigidity, provide enough space of dodging for end sword 6 simultaneously, reduce the contact friction of the back knife face 32 of end sword 6 and the machined surface on the work piece, be favorable to cutting into of end sword 6.

Illustratively, the width of the flank surface 32 corresponding to the first end edge relief angle 621 is 0.05mm to 0.1 mm. Such design can guarantee the life under the end sword 6 normal cutting prerequisite, makes end sword 6 have sufficient wearability and cutting force simultaneously.

Illustratively, as shown in fig. 3, the end edge 6 is provided with an inclination angle 63, and the angle of the inclination angle 63 is 1.8-2 °. Such design can reduce the contact friction of end sword 6 and machined surface, makes end sword 6 sharper, is favorable to cutting into of end sword 6, effectively prevents simultaneously that the smear metal from piling up in the front end, makes things convenient for the chip removal.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a cermet milling cutter of processing liquid metal which characterized in that includes cutting portion and the stalk portion that forms by the preparation of cermet material, the cutting portion is equipped with a plurality of all edges chip groove that extend to the stalk portion spiral from the front end and set up, the helix angle of all edges chip groove is 30 ~ 35, all edges chip groove is towards the face of cutting direction of rotation for the rake face, all edges chip groove face away from the face of cutting direction of rotation for the flank face, the rake face with the flank face is crossing forms all edges, the flank face is close to the position of the point of edge of all edges is provided with eccentric arc surface, eccentric arc surface along the spiral extension of all edges chip groove, and its width is 0.02mm ~ 0.05 mm.

2. The cermet milling cutter according to claim 1, wherein the peripheral edge is provided with a peripheral edge rake angle and a peripheral edge relief angle, the peripheral edge rake angle being in the range of 5 ° to 8 °; the peripheral edge relief angle includes a first peripheral edge relief angle and a second peripheral edge relief angle which are sequentially arranged from the eccentric arc surface to the flank surface, the angle of the first peripheral edge relief angle is 13 °, and the angle of the second peripheral edge relief angle is 25 °.

3. The cermet milling cutter according to claim 2, wherein the width of the flank corresponding to the first peripheral edge relief angle is 0.2mm to 0.25 mm.

4. The cermet milling cutter according to claim 2, wherein a relief is provided on a side of the second peripheral edge relief angle away from the tip of the peripheral edge.

5. The cermet milling cutter according to claim 1, wherein the peripheral edge has an outer diameter of 4mm and a core thickness of 2.2 mm.

6. The cermet milling cutter according to any one of claims 1 to 5, wherein the peripheral edge is connected to an end of the cutting portion away from the shank portion, an end edge flute connected to the peripheral edge flute is formed between two adjacent end edges, and a transition arc having a radius of 0.2mm is provided at a connection portion between the end edge and the peripheral edge.

7. The cermet milling cutter according to claim 6, wherein the end blade has a reinforcing edge on a rake surface thereof for protecting the end blade.

8. The cermet milling cutter according to claim 6, wherein the end edge is provided with an end edge rake angle and an end edge relief angle, the end edge rake angle being 3 ° to 5 °; the end blade back angle includes a first end blade back angle, a second end blade back angle and a third end blade back angle which are sequentially arranged from the blade tip of the end blade to the inner side, the angle of the first end blade back angle is 3 degrees, the angle of the second end blade back angle is 8 degrees, and the angle of the third end blade back angle is 16 degrees.

9. The cermet milling cutter according to claim 8, wherein the width of the flank corresponding to the first end edge relief angle is 0.05mm to 0.1 mm.

10. The cermet milling cutter according to claim 6, wherein the end edge is provided with an included angle of 1.8-2 °.