CN215615397U - A round nose milling cutter with high machining accuracy - Google Patents

Abstract

The utility model discloses a round nose milling cutter with high processing precision, which comprises a cutter handle and a cutter head, wherein the cutter head comprises an end edge and a peripheral edge, the peripheral edge is spirally arranged on the side part of the cutter head and is arranged in a central symmetry manner, the spiral angle of the peripheral edge is 25-45 degrees, the end edge is positioned at the front end of the peripheral edge and is arranged in an inclined manner, the end edge is in a central symmetry manner, a first chamfer R1 is arranged on the outer edge of the end edge, the angle of the first chamfer R1 is 14 degrees, an end edge accommodating groove is arranged between adjacent end edges, a peripheral edge accommodating groove is arranged between adjacent peripheral edges, the end edge accommodating grooves are respectively communicated with corresponding peripheral edge accommodating grooves, and a cutting groove is arranged between the inner edges of the end edges. The cutting tool has the advantages that the cutting speed is light, the working efficiency is high, the cutting groove cuts off the scraps, the scraps are discharged through the end edge accommodating groove and the peripheral edge accommodating groove, the scraps are smoothly discharged, the phenomenon that the scraps are accumulated to influence the working of the cutting tool is avoided, the first chamfer is not easy to wear during machining, the high machining precision of the cutting tool is kept, the quality of the machined surface of a workpiece is greatly improved, and the service life of the cutting tool is ensured.

Description

Round nose milling cutter that machining precision is high

Technical Field

The utility model relates to the field of milling cutters, in particular to a round nose milling cutter with high machining precision.

Background

Milling cutter, a rotary cutter with one or more cutter teeth for milling, mainly for machining planes, steps, grooves, forming surfaces and cutting off workpieces on a milling machine. The traditional round nose cutter has the problem that chip blocking is easy to occur to a chip groove during machining, and the cutting edge chamfer is easy to collapse during machining, so that the machining efficiency and the service life of the cutter are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a round nose milling cutter with high processing precision aiming at the defects in the prior art, and aims to solve the problems in the background technology.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a round nose milling cutter that machining precision is high, includes handle of a knife and tool bit, the handle of a knife with tool bit axial integral type is connected, the tool bit includes end sword and all sword, all sword are the heliciform and arrange in the tool bit lateral part is central symmetry setting, the spiral angle of all sword is 25-45, the end sword is located the front end and the slope setting of all sword, the end sword is central symmetry, and its outer edge is provided with first chamfer R1, first chamfer R1's angle is 14, and is adjacent be provided with the end sword storage tank between the end sword, and is adjacent be provided with all sword storage tanks between all the sword, the end sword storage tank is linked together with corresponding all sword storage tanks respectively, be provided with disconnected cutting groove between the edge in the end sword.

As a further elaboration of the above technical solution:

in the above technical scheme, a first transition surface, a second transition surface and a third transition surface which are arc-shaped are arranged between the peripheral edge and the knife handle.

In the above technical solution, a disc angle between the end blade and the peripheral blade is 5 °, a rake angle is 3 °, and a relief angle is 14 °.

In the above technical solution, the helix angle of the peripheral edge is 35 °.

In the above technical solution, the width of the end edge accommodating groove is smaller than the width of the peripheral edge accommodating groove.

In the technical scheme, the tail part of the cutter handle is provided with a second chamfer angle R2.

In the above technical solution, the end blades and the peripheral blades are provided with 4.

Compared with the prior art, the utility model has the beneficial effects that: the cutter has the advantages that the cutter is light and fast in cutting and high in working efficiency, the peripheral blades are spirally arranged on the side part of the cutter head and are arranged in a centrosymmetric manner, the outer edges of the end blades are provided with the first chamfers, the end blade accommodating grooves are arranged between the adjacent end blades, the peripheral blade accommodating grooves are arranged between the adjacent peripheral blades and are respectively communicated with the corresponding peripheral blade accommodating grooves, the cutting grooves are arranged between the inner edges of the end blades and cut off waste scraps, the waste scraps are discharged through the end blade accommodating grooves and the peripheral blade accommodating grooves, the scraps are smoothly discharged, the phenomenon that the accumulation of the scraps affects the cutter work is avoided, the first chamfers are not easy to wear during machining, the cutter keeps high machining precision, the quality of the machined surface of a workpiece is greatly improved, and the service life of the cutter is ensured.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a front view of the present invention;

fig. 4 is an enlarged schematic view at B in fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-4, a round nose milling cutter with high machining precision comprises a cutter handle 1 and a cutter head 2, wherein the cutter handle 1 is connected with the cutter head 2 in an axial integrated manner, the cutter head 2 comprises an end edge 21 and a peripheral edge 22, the peripheral edge 22 is spirally arranged at the side of the cutter head 2 and is arranged in a centrosymmetric manner, the spiral angle of the peripheral edge 22 is 25-45 degrees, the end edge 21 is arranged at the front end of the peripheral edge 22 and is obliquely arranged, the end edge 21 is in a centrosymmetric manner, a first chamfer R1 is arranged at the outer edge of the end edge, the angle of the first chamfer R1 is 14 degrees, an end edge accommodating groove 23 is formed between the adjacent end edges 21, a peripheral edge accommodating groove 24 is formed between the adjacent peripheral edges 22, and the end edge accommodating grooves 23 are respectively communicated with the corresponding peripheral edge accommodating grooves 24. The cutting grooves 25 are formed between the inner edges of the end blades 21, so that scraps sometimes continue during metal cutting and are unfavorable to machining and tools, the scraps are cut off through the cutting grooves 25, the scraps are discharged through the end blade accommodating grooves 23 and the peripheral blade accommodating grooves 24, and smooth discharge of the scraps is ensured. The specific angle of the first chamfer R1 can be set according to practical situations, and is not limited in this embodiment.

Specifically, as shown in fig. 1, an arc-shaped first transition surface 11, a second transition surface 12, and a third transition surface 13 are provided between the peripheral edge 22 and the holder 1, so that the transition between the peripheral edge 22 and the holder 1 is gradual, and the stability of the tool machining is ensured.

In the present embodiment, the disc angle between the end edge 21 and the peripheral edge 22 is 5 °. The front angle is 3 degrees, the angle is moderate, the phenomena of cutting deformation and work hardening of the cutter are reduced, the generation of accumulated chip is prevented, the processing quality of the surface of a workpiece is improved, and the cutting temperature is reduced. The back angle is 14 degrees, the friction between the cutter and the processed surface is prevented, and the smoothness of the workpiece is ensured.

Wherein, the spiral angle of the peripheral edge 22 is 35 degrees, and the angle is moderate, thereby ensuring the grinding processing effect of the cutter. Of course, the specific angle of the spiral angle of the peripheral edge 22 may be set according to the actual situation, and is not limited to this embodiment. .

Specifically, as shown in fig. 1, the width of the end blade receiving groove 23 is smaller than the width of the peripheral blade receiving groove 24, so as to ensure smooth discharge of the waste chips.

As shown in fig. 1, a tool holder 1 is provided in a cylindrical shape, and when machining is performed, the tool holder 1 is attached to a cutter head of a machine tool, and a workpiece is machined by using a tool bit 2. The tail of the knife handle 1 is provided with a second chamfer angle R2, so that a sharp corner of the knife is prevented from scratching a user or other parts, the knife handle has a guiding effect, and the knife can be conveniently installed on a machine.

Specifically, the tool shank 1 and the tool bit 2 are made of hard alloy, and machining hardness of the tool is guaranteed. Of course, the specific materials of the tool holder 1 and the tool bit 2 may be set according to actual situations, and are not limited in this embodiment.

Wherein, the end sword with the week sword all is provided with 4, guarantees the cutting ability of cutter, improves the wearability.

The cutter has the advantages that the cutter is light in cutting and high in working efficiency, the peripheral blades 22 are spirally arranged on the side part of the cutter head and are arranged in central symmetry, the outer edges of the end blades 21 are provided with the first chamfers R1, the end blade accommodating grooves 23 are arranged between the adjacent end blades 21, the peripheral blade accommodating grooves 24 are arranged between the adjacent peripheral blades 22, the end blade accommodating grooves 23 are respectively communicated with the corresponding peripheral blade accommodating grooves 24, the breaking grooves 25 are arranged between the inner edges of the end blades 21, the broken grooves 25 cut off waste chips, and the waste chips are discharged through the end blade accommodating grooves 23 and the peripheral blade accommodating grooves 24, so that the waste chips are smoothly discharged, the waste chips are prevented from being accumulated to influence the cutter work, and during machining, the first chamfers R1 are not easy to wear, so that the cutter keeps high machining precision, the quality of the machined surface of a workpiece is greatly improved, and the service life of the cutter is ensured.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (7)

1. The utility model provides a round nose milling cutter that machining precision is high, its characterized in that, includes handle of a knife and tool bit, the handle of a knife with tool bit axial integral type is connected, the tool bit includes end sword and all sword, all sword are the heliciform and arrange in the tool bit lateral part is the centrosymmetric setting, the spiral angle of all sword is 25-45, the end sword is located the front end and the slope setting of all sword, the end sword is the centrosymmetric, and its outer edge is provided with first chamfer R1, first chamfer R1's angle is 14, and is adjacent be provided with the end sword storage tank between the end sword, and is adjacent be provided with all sword storage tanks between all the sword, the end sword storage tank is linked together with corresponding all sword storage tanks respectively, be provided with disconnected cutting groove between the edge in the end sword.

2. The round nose milling cutter with high machining precision as claimed in claim 1, wherein first, second and third transition surfaces in an arc shape are provided between the peripheral edge and the shank.

3. The radius nose cutter according to claim 1, wherein a disc angle between the end edge and the peripheral edge is 5 °, a rake angle is 3 °, and a relief angle is 14 °.

4. The round nose milling cutter with high machining accuracy according to claim 1, wherein the peripheral edge has a helix angle of 35 °.

5. The round nose milling cutter with high processing accuracy as set forth in claim 1, wherein the width of the end edge receiving groove is smaller than the width of the peripheral edge receiving groove.

6. The round nose milling cutter with high machining precision as claimed in claim 1, wherein the tail portion of the cutter shank is provided with a second chamfer R2.

7. The round nose milling cutter with high machining accuracy according to claim 1, wherein the end edge and the peripheral edge are provided in 4 numbers.

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