CN216065580U

CN216065580U - Non-uniformly distributed arc-shaped groove-shaped microtexture anti-attrition turning tool blade

Info

Publication number: CN216065580U
Application number: CN202121173203.2U
Authority: CN
Inventors: 冯新敏; 孟聪
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-03-18
Anticipated expiration: 2031-05-28

Abstract

The hard alloy blade is used in the fields of semi-finishing and finishing of high-temperature alloy; the utility model is used for cutting high-temperature alloy and other difficult-to-process materials, and provides an abrasion-reducing turning tool blade with arc-shaped groove-shaped micro-textures in non-uniform distribution, which aims at shortening the service life of a tool caused by serious abrasion and serious heating of the tool in the process of cutting high-temperature alloy by a common tool; the blade can reduce the contact area between the cutter and the scraps, and effectively reduce the friction and the abrasion of the cutter, thereby reducing the cutting heat of the cutter and prolonging the service life of the cutter; the utility model relates to an abrasion-reducing turning tool blade with non-uniformly distributed arc-shaped groove-shaped micro textures, wherein a main body part of the turning tool blade is designed into a rhombus with a tool tip angle of 80 degrees, the arc radius of a tool tip is 0.8mm, a chip breaking table, a heat dissipation table and a heat dissipation groove are designed on a front tool face, and the arc-shaped groove-shaped micro textures are processed at a certain distance close to a cutting edge; the standard central hole in the middle is used for installation and positioning.

Description

Non-uniformly distributed arc-shaped groove-shaped microtexture anti-attrition turning tool blade

Technical Field

The utility model relates to an abrasion-reducing turning tool blade with non-uniformly distributed arc-shaped groove-shaped microtexture, belongs to the technology of tool abrasion reduction in the field of metal cutting processing, and is mainly applied to the field of semi-finishing and finishing of high-temperature alloy.

Background

In recent years, superalloy materials have received increasing attention in the field of aircraft engines. High-temperature alloy has good mechanical properties, and has developed into an important material which is indispensable for manufacturing parts such as missiles, aircraft engines, fuel machines and the like in recent years. Because the high-temperature alloy is a material with high hardness, high strength and good performance and stability, if cutting parameters or a used cutter are unreasonable in the actual processing process, the cutter can be seriously worn in the cutting process, a large amount of heat is generated, the production efficiency is very low, and the production cost is sharply increased. The utility model is based on the principle of bionics, process the micro-structure of certain shape and size on the rake face of the cutting tool, this micro-structure can reduce the contact area between bits-bits, thus improve the wear-resisting property of the cutting tool; in addition, the micro texture of the arc-shaped groove can also enhance the capability of the cutter for containing chips and storing lubricating oil, thereby reducing cutting heat, prolonging the service life of the cutter and the like.

Disclosure of Invention

The main problems to be solved by the utility model are as follows: the utility model is provided for the problems of short service life, serious abrasion and heating, non-ideal machined surface roughness, higher machining cost and the like of a common cutter in the process of cutting high-temperature alloy.

The utility model adopts an effective technical scheme for solving the main problems:

1. the main body of the turning blade is designed into a rhombus with a sharp angle of 80 degrees, and the material is hard alloy; the front tool face of the tool is designed with arc-shaped groove-shaped micro textures with unequal pitch angles, and the micro textures are arranged in a dense-front and sparse-rear arrangement mode due to different stresses applied to different positions on the front tool face in the process that the tool cuts a workpiece, namely, the pitch angles among the micro textures closer to a cutting edge are smaller, and the number of the micro textures is larger; the greater the pitch angle between microtextures further away from the cutting edge, the fewer the number. The micro texture on the rake face can reduce the contact area between the tool and the chip, effectively reducing the tool wear and cutting heat.

2. According to the turning tool blade, the triangular-like chip breaking table is designed on the front tool face, chips flow to the triangular-like chip breaking table of the front tool face after flowing out of the cutting edge, and are curled upwards to be broken under the action of the chip breaking table, the chip breaking table machined on the front tool face improves the chip breaking capacity of the tool, the chips are prevented from scratching the machined surface of a workpiece due to winding, and the quality of the machined surface of the workpiece is further guaranteed.

3. The rake face of the turning insert is designed with groove-shaped and circular radiating grooves, and the radiating grooves have the function of dissipating heat generated by the cutting tool in the cutting process in time, so that the influence of overheating of the cutting tool on the cutting performance and the surface quality of a machined workpiece is avoided.

4. The middle position on the front cutter surface of the cutter is provided with the curve-shaped heat dissipation table, and the curve-shaped heat dissipation table has the main functions of increasing the whole heat dissipation area of the cutter, reducing the temperature of the cutter during cutting and ensuring that the temperature of the cutter during working is not too high.

The utility model has the beneficial effects that: the introduction of the triangle-like chip breaking table improves the chip breaking performance of the cutter, avoids the situation that chips scratch the machined surface of the workpiece due to winding, and improves the precision and the quality of the machined surface of the workpiece; the heat dissipation groove and the heat dissipation platform reduce the cutting temperature of the cutter during cutting, reduce the contact area between the cutter and chips in the process of machining a workpiece, further reduce the abrasion and cutting heat of the cutter, and prolong the service life of the cutter.

Drawings

FIG. 1 is an isometric view of a non-uniformly distributed arc-shaped grooved microtextured wear reduction turning insert.

FIG. 2 is a three-dimensional view of a non-uniformly distributed arc-shaped groove-shaped microtextured wear-reducing turning insert.

FIG. 3 is a three-dimensional enlarged view of the micro-texture of the front face of the anti-attrition mill blade with the arc-shaped groove and the micro-texture which are non-uniformly distributed.

FIG. 4 is a top view of a non-uniformly distributed arc groove-shaped microtextured wear reduction lathe blade.

The labels in the figure are: a circular arc cutting edge (1); an arc-shaped groove-shaped microtexture (2); a triangle-like chip breaking table (3); a groove-shaped heat dissipation groove (4); a curved heat dissipation table (5); a circular heat dissipation groove (6); a standard central hole (7).

Detailed Description

Fig. 1 is an isometric view of an unevenly distributed arc-shaped groove-shaped microtexture antifriction turning insert, an arc-shaped groove-shaped microtexture 2 is the microtexture of the turning insert, a triangular-like chip breaking table 3 is designed on a front tool face close to an arc cutting edge 1, when chips flow out from the arc cutting edge 1 and reach the triangular-like chip breaking table 3, the chips can be curled upwards and broken under the action of the triangular-like chip breaking table 3, the chip breaking capacity of the whole cutting tool is improved, and the damage of the chips to a processed surface of a workpiece due to winding is avoided; in addition, the groove-shaped heat dissipation groove 4, the circular heat dissipation groove 6 and the curve-shaped heat dissipation table 5 with the convex middle position are designed on the front tool face of the tool, so that the effects of reducing the contact area between the tool and chips and increasing the whole heat dissipation area of the tool can be achieved, the abrasion of the tool is reduced, the temperature of the tool during cutting is reduced, and the service life of the tool is prolonged.

FIG. 2 is a three-dimensional view of a non-uniformly distributed arc-shaped groove-shaped microtexture anti-attrition turning insert, wherein the insert body is designed into a rhombus with a tip angle of 80 degrees, the arc radius of the tip is 0.8mm, and the material is hard alloy.

FIG. 3 is a three-dimensional microtexture enlarged view of the front tool face of the anti-attrition mill blade with non-uniformly distributed arc-shaped groove-shaped microtexture.

FIG. 4 is a top view of a non-uniformly distributed arc-shaped groove-shaped microtexture anti-attrition turning insert; it can be seen from the figure that the front knife face of the cutter is distributed with an arc groove-shaped microtexture 2, and the microtexture generally presents an arrangement mode of dense front and sparse back, which is designed based on different stresses on different positions of the front knife face when the front knife face cuts a workpiece; in the cutting process of the cutter, the position closer to the cutting edge bears larger stress in the cutting process, and the position farther away from the cutting edge bears smaller stress; the pitch angles and the number of the micro textures are in accordance with the arrangement mode of an arithmetic progression, the pitch angles between the micro textures are in accordance with an arithmetic progression with the first term of 15 degrees and the tolerance of 5 degrees, the number is in accordance with an arithmetic progression with the first term of 7 and the tolerance of-1 after the micro textures closest to the arc cutting edge 1 are sequentially backwards; the arc groove-shaped microtexture 2 on the front tool face can reduce the contact area between the tool and scraps in the process of cutting high-temperature alloy by the tool, thereby reducing the frictional resistance, reducing the cutting heat and the abrasion of the tool and prolonging the service life of the tool.

Claims

1. A non-uniformly distributed arc groove-shaped microtexture antifriction turning tool blade is characterized in that: the main body part of the blade is designed into a rhombus with a sharp angle of 80 degrees, the blade is made of hard alloy materials, the blade is centrosymmetric and symmetric on the upper and lower surfaces, and 4 cutting edges are provided; an arc-shaped groove-shaped microtexture (2) is designed at a certain distance close to a cutting edge of the cutter, a circular radiating groove (6) and a curve-shaped radiating platform (5) are designed at the middle position of a front cutter surface, and three sections of groove-shaped radiating grooves (4) parallel to the boundary of the curve-shaped radiating platform are designed between the curve-shaped radiating platform (5) and the triangle-like chip breaking platform (3).

2. The non-uniformly distributed arc-shaped groove-shaped microtextured antifriction turning insert of claim 1, characterized in that: an arc-shaped groove-shaped micro texture (2) is designed at a position, which is away from a cutting edge, on a front tool face by a certain distance, and the micro texture in a non-equal pitch angle arrangement mode is specially designed on the basis of the characteristic that the stress applied by a cutter during cutting is gradually reduced along with the distance from the cutting edge, the pitch angle of the micro texture accords with an arithmetic progression with the first term of 15 degrees and the tolerance of 5 degrees, the number accords with an arithmetic progression with the first term of 7 and the tolerance of-1, namely, the more the closer the pitch angle of the micro texture at the position close to the cutting edge is, the more the number is, the denser the micro texture is; conversely, the greater the microtexture pitch angle away from the cutting edge compared to the former, the number of microtextures gradually decreases, so that the microtextures become more sparse.

3. The non-uniformly distributed arc-shaped groove-shaped microtextured antifriction turning insert of claim 1, characterized in that: a triangle-like chip breaking table (3) is designed on the front cutter face and close to the cutting edge, and the chip breaking table is introduced to facilitate the breaking of chips.

4. The non-uniformly distributed arc-shaped groove-shaped microtextured antifriction turning insert of claim 1, characterized in that: a groove-shaped heat dissipation groove (4) is designed on the front knife face, and a curved heat dissipation table (5) and a circular heat dissipation groove (6) are designed in the middle position of the front knife face.