CN211842420U

CN211842420U - Chamfer forming cutter

Info

Publication number: CN211842420U
Application number: CN202020297734.1U
Authority: CN
Inventors: 廖文生; 曹连花
Original assignee: Jiangxi Saiyu Precision Machinery Co ltd
Current assignee: Jiangxi Saiyu Precision Machinery Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-03
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a chamfer shaping sword, the tool bit comprises a tool bit, be equipped with the cutting part on the tool bit, the cutting part includes end sword and blade portion, blade portion includes cutting edge and cutting groove, the cutting groove is the helicla flute of blade portion circumference, the blade portion uses the end sword as the starting point, connects the centrum that the external diameter crescent who constitutes according to this by the multistage curved surface, the multistage curved surface include by the plane that the straight line gyration constitutes and by the curved surface that the curve gyration constitutes. The blade portion adopts the multistage curved surface to connect the entity that constitutes according to this and have certain tapering, because the figurative unique design of blade, its curved surface that can the direct forming is more complicated shortens the time of being processed the material greatly, guarantees that the timber surface of being cut is smooth, does not have the barb.

Description

Chamfer forming cutter

Technical Field

The utility model relates to a processing cutter technical field, more specifically the theory relates to a chamfer shaping sword.

Background

The decorative pattern or design on the wooden furniture is mostly formed by a complex curved surface formed by straight lines, curves or arcs, most of the cutters have no forming function, and when the pattern or design is engraved on a machine tool, the required pattern or design can be formed by changing the cutters back and forth. The utility model discloses a chamfer sword, like chinese patent application No. 2018200580176, the name is "a chamfer sword", discloses a chamfer sword, including the tool bit, the tool bit includes tool bit and cutting part, and the top of cutting part is equipped with the chamfer tooth, and the chamfer tooth is equipped with the chamfer, is equipped with a plurality of shaping back feet that are used for realizing the chamfer and keep away the space on the chamfer, and the tip of cutting part is equipped with a plurality of cutting edges, and the side of cutting edge is equipped with the chip groove. The disclosed device can chamfer a workpiece and also process the bottom surface of the workpiece, but because the cutting edge of the cutting part is a straight cutting edge, only a plane can be processed, and a complex curved surface consisting of a plane, a curved surface, an arc or a straight line cannot be processed.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

An object of the utility model is to overcome the technical problem of the complicated curved surface of the unable direct forming of cutter among the prior art, provide a chamfer shaping sword, decorative pattern or pattern on its wooden furniture of ability direct forming.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does: the utility model provides a chamfer shaping sword, includes the tool bit, be equipped with the cutting part on the tool bit, the cutting part includes end edge and blade portion, blade portion includes cutting edge and cutting groove, the cutting groove is the helicla flute of blade portion circumference, blade portion uses end edge as the starting point, the centrum of the external diameter crescent who constitutes is connected according to this by the multistage curved surface, the multistage curved surface include by the plane that the straight line gyration constitutes and by the curved surface that the curve gyration constitutes.

As a further improvement of the present invention, the multi-section curved surface includes a first curved surface, a second curved surface, a third curved surface and a fourth curved surface which are connected from bottom to top in turn, the first curved surface and the third curved surface are formed by straight line rotation, and the second curved surface and the fourth curved surface are formed by curve rotation; relative to the center line of the cutter, the second curved surface is concave, and the fourth curved surface is convex.

As a further improvement of the present invention, the radius of the fourth curved surface is (0.1-2) mm.

As a further improvement of the present invention, the taper of the blade portion is 87 °.

As a further improvement of the utility model, the cutting edge part has a shear angle of 10 degrees and a central front angle of 4-6 degrees.

As a further improvement of the utility model, the radial first relief angle of the edge part is 9 degrees to 11 degrees, and the radial second relief angle of the chamfer forming cutter is 20 degrees to 24 degrees.

As a further improvement of the utility model, the axial first relief angle of the cutting edge part is 7 degrees to 9 degrees, and the axial second relief angle of the chamfer forming cutter is 18 degrees to 22 degrees.

As a further improvement, the length of the chamfer forming knife is 50mm, and the diameter is 4 mm.

As a further improvement of the utility model, the material of the tool bit is tungsten steel.

As a further improvement, the cutter head is made of high-speed steel.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

the utility model discloses a chamfer shaping sword, blade portion adopt the multistage curved surface to connect the constitution according to this and have certain tapered entity, because the figurative unique design of blade, make the cutting portion of cutter can the complicated curved surface of shaping wooden furniture, if the complicated curved surface that comprises straight line, curve or circular arc, conveniently mill the decorative pattern and the pattern of processing out wooden furniture, need not make a round trip to change the cutter and process, machining precision and machining efficiency can both obtain guaranteeing.

Drawings

Fig. 1 is a schematic structural view of a chamfer forming cutter provided by the present invention;

FIG. 2 is a view taken along line K of FIG. 1;

FIG. 3 is a schematic view of the radial rear angle of FIG. 2;

FIG. 4 is a schematic view of the axial rearward angle of FIG. 2;

the reference numerals in the schematic drawings illustrate:

1. a cutter head; 2. a cutting portion; 21. a bottom edge; 22. a blade portion; 220. a first curved surface; 221. a second curved surface; 222. a third curved surface; 223. a fourth curved surface; 23. cutting a groove;

a. a radial first relief angle; b. a radial second relief angle; c. a central rake angle; d. an axial first relief angle; e. an axial second relief angle; f. a shear angle.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1, a chamfer shaping sword, including tool bit 1, be equipped with cutting part 2 on the tool bit, tool bit 1 and cutting part 2 integrated into one piece, cutting part 2 includes end edge 21 and blade 22, blade 22 includes cutting edge and cutting flute 23, cutting flute 23 is the helicla flute of blade 22 circumference, blade is with end edge 21 as the starting point, the centrum of external diameter crescent who constitutes by multistage curved surface according to the connection, the multistage curved surface includes the plane that constitutes by the straight line gyration and the curved surface that constitutes by the curve gyration, make the cutting part of cutter can the shaping wooden furniture's complicated curved surface, if by the straight line, the complicated curved surface that curve or circular arc constitute, conveniently mill the decorative pattern and the pattern of wooden furniture, do not need to make a round trip to change the cutter and process, machining precision and machining efficiency can both obtain guaranteeing.

As a preferred embodiment of the present invention, it may also have the following additional technical features.

In this embodiment, the plurality of curved surfaces include a first curved surface 220, a second curved surface 221, a third curved surface 222, and a fourth curved surface 223 connected from bottom to top, the first curved surface 220 and the third curved surface 222 are formed by straight line rotation, the second curved surface 221 and the fourth curved surface 223 are formed by curved line rotation, and the second curved surface 221 is concave relative to the center line of the tool, and the fourth curved surface is convex. The cutter can mill a plane on the workpiece through the first curved surface 220 and the third curved surface 222, and can mill corresponding outer convex shapes and inner concave shapes on the workpiece through the second curved surface 221 and the fourth curved surface 223, so that patterns or patterns with planes and curved surfaces on the wooden furniture can be conveniently formed. In practical applications, the second curved surface 221, the fourth curved surface 223, and the first curved surface 220 and the third curved surface 222 may be convex, and may also be concave, with respect to the tool center line, which depends on the milling shape of the workpiece, but is not limited thereto.

In this embodiment, the radius of the fourth curved surface 223 is (0.1-2) mm, the diameter of the cutter is 4mm, so the radius of the fourth curved surface 223 is limited to not exceed 2mm at most, it is appropriate to control the radius of the fourth curved surface to (0.1-2) according to the size of the groove of the pattern or design on the wooden furniture, and the fourth curved surface may be separately provided according to the actual situation, and is not limited thereto, because the machined groove to be milled is different for different products.

In this embodiment, the taper of the cutting edge 22 is 87 °, and the taper may be 60 ° or 90 °.

In this embodiment, the cutting edge 22 has a shear angle f of 10 °, a center rake angle c of 4 ° to 6 °, the shear angle f and the center rake angle c are used to adjust the sharpness of the cutting edge, the shear angle f needs to be adaptively adjusted according to the difference of actually processed products, and stainless steel products, generally 3 ° to 5 °, plastic products, generally more than 10 ° can be processed. Because the product of being processed is timber, and the nature is softer, and the requirement is generally sharp can, and shear angle f is 10 and can satisfy the requirement of general sharpness, if too big cutting edge bursts apart easily, the undersize blade can be more blunt, is unfavorable for going on of cutting. The central front angle c is mainly used for adjusting the sharpness of the bottom of the cutting edge, the cutting edge is easy to break when the central front angle c is too large, and the mechanical friction between the cutter and a workpiece is easy to increase when the central front angle c is too small, so that the surface of the cutter is damaged. The central rake angle c is 4-6 degrees, so that the sharpness of a cutting edge can be ensured, the mechanical friction between a cutter and a workpiece is reduced, and the cutting capability is ensured.

In this embodiment, as shown in fig. 3 and 4, the radial first relief angle a of the cutting edge portion 22 is 9 ° to 11 °, and the radial second relief angle b is 20 ° to 24 °. The axial first relief angle d is 7-9 deg., and the axial second relief angle e is 18-22 deg.. The cutter back angle is the contained angle between back knife face and the cutting plane, and the setting of back angle directly influences the quality, the cutter incorruptibility and the productivity ratio of machined surface, and the effect of back angle is the friction that reduces cutter back knife face and machined surface in the cutting process, and the back angle can not too big, also should not the undersize yet. The relief angle increases, can reduce the friction, avoids the work piece, improves the machined surface quality, but when the relief angle increases, its tool bit intensity is low, and the heat dissipation is small, and the relief angle is too small, adds the work piece that can not in time avoid in processing, influences machined part surface quality, aggravates cutter wearing and tearing. Therefore, the selection and the number of the relief angles are reasonably set according to actual conditions, and the set number and the angle of the radial relief angle and the axial relief angle in the embodiment take the two aspects into consideration to a certain extent. Set up the relief angle into above-mentioned within range, be according to the material characteristic of processing and through experimental the reacing, add man-hour, the machined part is avoided to its can be better, improves work piece surface quality, and the saw-dust of discharging can be assisted to a plurality of relief angles, reduces cutter wearing and tearing, guarantees that the timber surface that is milled is smooth, no barb.

In the embodiment, the length of the chamfer forming cutter is 50mm, the diameter of the chamfer forming cutter is 4mm, the diameter of the cutter has corresponding standards, and the chamfer forming cutter is generally determined according to the size, the depth and the processing material of a processed part, and the processed part is wood, so that the diameter is not too large, and is preferably about 4mm in diameter and 50mm in length.

In the embodiment, the tool bit 1 is made of tungsten steel, the tungsten steel has high hardness, good wear resistance, good strength and toughness, and excellent heat resistance and corrosion resistance, and the manufactured tool has the advantages of high hardness, high strength, high wear resistance and the like.

In this embodiment, the material of the cutter head 1 may be high-speed steel, which may increase the strength of the cutter.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a chamfer shaping sword, includes tool bit (1), be equipped with cutting portion (2) on the tool bit, cutting portion (2) include end sword (21) and blade portion (22), blade portion (22) include cutting edge and cutting flute (23), cutting flute (23) are the helicla flute of blade portion (22) circumference, its characterized in that: the cutting edge part (22) is a cone body with the outer diameter gradually increased, which is formed by connecting a plurality of sections of curved surfaces in turn by taking the bottom cutting edge (21) as a starting point, wherein the plurality of sections of curved surfaces comprise a plane formed by straight line rotation and a curved surface formed by curve rotation.

2. The chamfer forming tool according to claim 1, wherein: the multi-section curved surface comprises a first curved surface (220), a second curved surface (221), a third curved surface (222) and a fourth curved surface (223) which are sequentially connected from bottom to top, wherein the first curved surface (220) and the third curved surface (222) are formed by straight line revolution, and the second curved surface (221) and the fourth curved surface (223) are formed by curve revolution; relative to the center line of the cutter, the second curved surface (221) is concave, and the fourth curved surface (223) is convex.

3. The chamfer forming tool according to claim 2, wherein: the radius of the fourth curved surface (223) is (0.1-2) mm.

4. The chamfer forming tool according to claim 1, wherein: the taper of the cutting edge part (22) is 87 degrees.

5. The chamfer forming tool according to claim 1, wherein: the cutting edge part has a shear angle (f) of 10 degrees and a central rake angle (c) of 4-6 degrees.

6. The chamfer forming tool according to claim 1, wherein: the radial first relief angle (a) of the edge opening part is 9-11 degrees, and the radial second relief angle (b) of the chamfer forming cutter is 20-24 degrees.

7. The chamfer forming tool according to claim 1, wherein: the axial first relief angle (d) of the edge opening part is 7-9 degrees, and the axial second relief angle (e) of the chamfer forming cutter is 18-22 degrees.

8. The chamfer forming tool according to claim 1, wherein: the length of chamfer shaping sword is 50mm, and the diameter is 4 mm.

9. The chamfer forming tool according to any one of claims 1 to 8, wherein: the tool bit is made of tungsten steel.

10. The chamfer forming tool according to any one of claims 1 to 8, wherein: the cutter head is made of high-speed steel.