CN216680421U

CN216680421U - Variable-core-thickness unequal-division long-edge end mill

Info

Publication number: CN216680421U
Application number: CN202123164908.0U
Authority: CN
Inventors: 周乐安; 钟成明; 高小红
Original assignee: Deyang Jiechuang Technology Co ltd
Current assignee: Deyang Jiechuang Technology Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-06-07
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a variable-core-thickness unequal-length-edge end mill, which particularly relates to the field of machining and comprises a cutter handle, a cutter edge, a first cutting part, a second cutting part, cutter teeth, a chip groove, a first relief angle, a second relief angle and a third relief angle. Through the optimization of the cutter, compared with the prior art, the utility model utilizes the unequal-diameter core thickness of the cutter and increases the smoothing edge, increases the chip removal capability of the cutter on the premise of not changing the diameter of the handle of the cutter, simultaneously improves the rigidity of the cutter, improves the adverse effect of cutter relieving on a workpiece caused by the use disturbance of the cutter, and has higher practicability.

Description

Variable-core-thickness unequal-division long-edge end mill

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a variable-core-thickness unequal-division long-edge end mill.

Background

In the machining process, the depth of a workpiece groove often exceeds 3 times of the diameter of a cutter, and the workpiece has obvious cutter back-off phenomenon and poor surface quality. Typically, larger diameter tools are modified to reduce the adverse effects on the workpiece caused by the perturbations of the tool during use. The following provides a tool which can be used for processing a workpiece with 3-5 times diameter without changing the diameter of the tool, and solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a variable-core-thickness unequal-division long-edge end mill, which aims to solve the problems that in the machining process, the groove depth of a workpiece often exceeds 3 times of the diameter of a cutter, the workpiece has obvious cutter back-off phenomenon and the surface quality is poor.

The utility model is realized in such a way, and provides the following technical scheme: the utility model provides a become core and become long sword end mill that divides unequally, includes handle of a knife, cutting edge, first cutting part, second cutting part, sword tooth, chip pocket, first relief angle, second relief angle, third relief angle, the one end of handle of a knife is provided with the cutting edge, and wherein the cutting edge is including first cutting part and second cutting part, the one end of first cutting part is provided with the second cutting part, the tip of second cutting part is provided with the sword tooth, and is adjacent set up to the chip pocket between the sword tooth, be provided with first relief angle, second relief angle, third relief angle on the sword tooth, first relief angle one side is provided with the second relief angle, second relief angle one side is provided with the third relief angle.

In a preferred embodiment, the tool holder and the cutting edge are of an integrally formed structure, and the whole body is made of high-hardness hard alloy materials.

In a preferred embodiment, the number of teeth on the blade is arranged in five groups, wherein the teeth and flutes are of helical configuration.

In a preferred embodiment, the second blade core thickness gradually transits from the end face position core thickness phi 8mm to phi 10.625mm, the length of the section is 15mm, and the first blade core thickness gradually transits from phi 10.625mm to phi 12.37mm, the length of the section is 65 mm.

In a preferred embodiment, the degree of the first rear angle is 2 °, the degree of the second rear angle is 12 °, and the degree of the third rear angle is 20 °.

In a preferred embodiment, the end tooth rake angle of said blade teeth is 10 °.

Compared with the prior art, the utility model has the beneficial effects that:

through the optimization to the cutter, compare with prior art, utilize the cutter not constant diameter core thick and increase the smoothing sword, under the prerequisite that does not change the cutter handle footpath, increase cutter chip removal ability, improve the cutter rigidity simultaneously, improve because of the cutter uses the bad influence that the degree of disturbance led to the fact the cutter to the work piece, possess higher practicality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a left side view of the present invention.

FIG. 3 is a schematic cross-sectional view taken at the position A-A in the present invention.

Fig. 4 is an enlarged structural view of a portion a in fig. 3 according to the present invention.

In the figure: 1 handle, 2 blades, 21 first blade, 22 second blade, 3 blade teeth, 4 chip flutes, 5 first relief angle, 6 second relief angle, and 7 third relief angle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "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 illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The variable core thickness unequal long edge end mill shown in fig. 1-4 comprises a cutter handle 1, a cutter blade 2, a first blade 21, a second blade 22, a cutter tooth 3, a chip groove 4, a first relief angle 5, a second relief angle 6 and a third relief angle 7, wherein the cutter blade 2 is arranged at one end of the cutter handle 1, the cutter blade 2 comprises the first blade 21 and the second blade 22, the second blade 22 is arranged at one end of the first blade 21, the cutter tooth 3 is arranged at the end of the second blade 22, the chip groove 4 is arranged between the adjacent cutter teeth 3, the first relief angle 5, the second relief angle 6 and the third relief angle 7 are arranged on the cutter tooth 3, the second relief angle 6 is arranged on one side of the first relief angle 5, and the third relief angle 7 is arranged on one side of the second relief angle 6.

Furthermore, handle of a knife 1 and cutting edge 2 are integrated into one piece structure, wholly adopt the carbide material of high rigidity, 3 quantity of sword tooth on the cutting edge 2 set up to five groups, and wherein sword tooth 3 and chip groove 4 are the heliciform structure, improve the cutter monodentate tool depth of cut.

Furthermore, the core thickness phi 8mm of the second blade part 22 at the end face position is gradually transited to phi 10.625mm, the length of the second blade part is 15mm, the core thickness of the second blade part is increased by 15% -30% compared with the core thickness diameter designed conventionally, the hardness and rigidity of the tool body are greatly improved, the core thickness of the first blade part 21 is gradually transited to phi 12.37mm from phi 10.625mm, the length of the second blade part is 65mm, the chip containing space at the end edge position is enlarged, the iron chips can be smoothly discharged, and the damage to the surface of the workpiece is reduced as much as possible.

Further, the degree of the first clearance angle 5 is 2 degrees, the degree of the second clearance angle 6 is 12 degrees, and the degree of the third clearance angle 7 is 20 degrees, so that the surface quality of the machined workpiece is mainly improved.

Further, the rake angle of the end teeth of the blade teeth 3 is 10 °.

The working principle of the utility model is as follows:

when the cutter is implemented, the cutter is integrally formed by the cutter handle 1 and the cutter edge 2, the whole cutter is made of high-hardness hard alloy, the number of the cutter edge teeth 3 is increased to 5, the single-tooth cutting allowance of the cutter is increased, the core thickness is large, the whole body is designed to be variable in core thickness, the core thickness of the second cutter edge 22 is gradually transited to phi 10.625mm from phi 8mm at the position of the end face of the cutter edge, the length of the core is 15mm, the chip containing space at the position of the end edge is enlarged, scrap iron can be discharged smoothly and lightly, and the damage to the surface of a workpiece is reduced as much as possible; the core thickness of the first blade part 21 is gradually transited from phi 10.625mm to phi 12.37mm, the length of the core is 65mm, the core thickness is increased by 15% -30% compared with the core thickness diameter designed by the conventional design, and the hardness and rigidity of the processing tool body are greatly improved.

The cutter is characterized in that a first back angle 5 is designed in the back angle aspect to serve as a smoothing edge, the purpose of the cutter is mainly to provide the surface quality of a double-processed workpiece, the degree of the cutter is 2 degrees, the width of the cutter is 0.15mm, the first back angle 5 just falls on the axial circumference of a cutting edge, the cutter plays a role in trimming and also plays a certain supporting role, the degree of a second back angle 6 is 12 degrees, and the tooth width of the cutter is 0.8 mm; the third back angle 7 is 20 degrees, and the tooth width is 1.3 mm;

the cutter has larger contact surface between the peripheral edge and the workpiece and larger cutting resistance, and the cutter groove has better rigidity by adopting a position of 60 degrees and 15-65 mm away from the edge part, so that the core thickness is improved, the width of the edge at the tail part of the cutter edge is deviated, and the sunken surface of the tooth back of the cutter is increased by 0.2mm, thereby reducing the processing time of the cutter and lowering the cost.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a become core thickness unequal division long edge end mill, includes handle of a knife and cutting edge, its characterized in that: the one end of handle of a knife is provided with the cutting edge, and wherein the cutting edge is including first cutting part and second cutting part, the one end of first cutting part is provided with the second cutting part, the tip of second cutting part is provided with the sword tooth, and is adjacent set up to the chip groove between the sword tooth, be provided with first relief angle, second relief angle, third relief angle on the sword tooth, first relief angle one side is provided with the second relief angle, second relief angle one side is provided with the third relief angle.

2. A variable core thickness unequal long edge end mill according to claim 1, wherein: the knife handle and the knife edge are of an integrally formed structure, and the whole structure is made of high-hardness hard alloy materials.

3. A variable core thickness unequal long edge end mill according to claim 1, wherein: the number of the blade teeth on the blade is set into five groups, wherein the blade teeth and the chip flutes are of spiral structures.

4. A variable core thickness unequal long edge end mill according to claim 1, wherein: the core thickness of the second blade part is gradually changed from phi 8mm to phi 10.625mm from the end surface position, the length of the second blade part is 15mm, the core thickness of the first blade part is gradually changed from phi 10.625mm to phi 12.37mm, and the length of the first blade part is 65 mm.

5. A variable core thickness unequal long edge end mill according to claim 1, wherein: the degree of the first rear angle is 2 °, the degree of the second rear angle is 12 °, and the degree of the third rear angle is 20 °.

6. A variable core thickness unequal long edge end mill according to claim 1, wherein: the front angle of the end tooth of the blade tooth is 10 degrees.