CN214079314U

CN214079314U - Equidistant oval texture finish machining antifriction lathe tool piece

Info

Publication number: CN214079314U
Application number: CN202022066014.7U
Authority: CN
Inventors: 胡景姝; 王座
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-08-31
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to an equidistance oval texture finish machining antifriction turning tool piece. The cutter blade main body is designed into an 80-degree diamond turning cutter blade, the radius of an arc is 0.8mm, the cutter blade main body is made of hard alloy, and a chip breaking table and a heat dissipation groove are machined on a front cutter surface. And elliptical microtextures which are equidistantly and circumferentially distributed unevenly are distributed at the knifepoints of the front knife face and the rear knife face. An elliptical chip breaking table is distributed on the front cutter face of the blade, an annular volume groove is designed on a boss in the middle of the front cutter face, a cylindrical protrusion is arranged at the part close to the cutter tip, and a capsule-shaped protrusion is designed at the edge of the front cutter face close to the cutting edge; the utility model discloses in the cutting process environment that is applicable to the high temperature alloy complicacy that can be fine, can effectual reduction blade wearing and tearing promote the heat-sinking capability of blade, reduce and glue the sword phenomenon and can promote the chip breaking ability of blade to improve machined surface quality.

Description

Equidistant oval texture finish machining antifriction lathe tool piece

Technical Field

The utility model relates to an equidistance oval texture finish machining antifriction turning tool piece. The utility model belongs to the technical field of the cutter antifriction, mainly use at the high temperature alloy finish machining process.

Background

In the field of aero-engines, high-temperature alloy materials known as "advanced engine basestones" have received increasing attention. By virtue of good mechanical properties, superalloys have evolved to make missile and aircraft engines. The material is indispensable for hot end parts such as fuel machines and the like. However, the characteristics of high strength, high hardness, low thermal conductivity, large elongation and the like of the high-temperature alloy also become main factors which cause low processing efficiency and difficult quality guarantee. In actual machining, if the cutting parameters or the use of the tool are not reasonable, the production cost thereof is increased sharply. Therefore, the research on the cutting theory of the high-temperature alloy material becomes a necessary work in our aviation manufacturing industry.

While many advantages are obtained with superalloys, many problems arise in machining as compared to other materials. In the cutting process, the problems of low machining efficiency, short service life of the cutter, difficulty in ensuring the quality of a machined surface, low cutting machining efficiency and the like are caused by large cutting force, high cutting temperature, abrasion of the cutter, difficulty in breaking chips and serious abrasion of the cutter in a machining area.

Disclosure of Invention

The problems of large cutting force, high cutting temperature, serious cutter abrasion, serious damage and the like in the high-temperature alloy processing are solved. The utility model provides an equidistant ellipse texture finish machining antifriction turning insert mainly uses at the high temperature alloy finish machining process, and this blade can be applicable to the cutting process environment that the high temperature alloy is complicated, can effectual reduction blade's wearing and tearing, promotes the heat-sinking capability of blade, reduces and glues the sword phenomenon and can promote the chip breaking ability of blade to improve machined surface quality.

The utility model provides a technical scheme that its technical problem adopted: the blade main body is designed into an 80-degree diamond turning blade, the arc radius is 0.8mm, and the material is hard alloy. Elliptical micro-textures which are distributed at the cutter tip of the rake face in an equidistant and circumferentially uneven distribution mode are distributed, and according to the stress distribution condition of the rake face, the micro-textures are distributed in a front sparse and back dense mode, and the micro-textures which are closer to the cutter tip are distributed more sparsely and more densely. By adopting the micro-texture with the elliptical morphology, the contact area between the blade and the cutting chips can be effectively reduced, the friction between the blade and the cutting chips can be reduced, the abrasion of the front cutter face is reduced, the cutting-off of the cutting chips is more facilitated, and the service life of the blade is prolonged. Meanwhile, the rear cutter face is provided with the elliptical micro-texture at equal intervals, and the main rear cutter face is provided with the elliptical micro-texture, so that the design can save the manufacturing cost. The effect of the method can effectively reduce the contact area of the knife and the scraps, reduce the friction between the knife and the scraps and reduce the cutting force, and the bearing strength of the blade can be greatly improved by adopting the shape of the elliptical microtexture so as to avoid the damage of the microtexture caused by the severe extrusion of the rear knife face and the machined surface of the workpiece. A chip breaking table is designed behind the front tool face, and chips can be curled upwards when flowing through the chip breaking table, so that the chip breaking effect is achieved. And the front cutter face is designed with an ellipse-like bulge, which is beneficial to increasing the heat dissipation capacity of the cutting edge. The boss is designed with a groove shape, and the radiating groove and the concave pit are designed on the boss, so that a better radiating effect is achieved when a workpiece is machined. The groove can also contain part of the cutting fluid, and a lubricating effect can be achieved. Meanwhile, the cutting edge of the blade is a curved edge, and the curved edge can change the chip outflow direction and discharge the chips towards the chip breaking table and is far away from the machined surface of the workpiece.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses mainly be applied to superalloy's cutting process, the wearing and tearing that can effectual reduction cutter are damaged, reduce the friction, and effectual reduction cutting force through the radiating groove on the design boss, can improve the heat-sinking capability reduction cutting temperature of blade. The oval-shaped bulge of the front tool face can change the outflow direction of chips, achieve the chip breaking effect and play a role in heat dissipation to a certain extent. Thereby improving the processing efficiency of the high-temperature alloy and improving the surface quality of the workpiece.

Drawings

FIG. 1 is a three-dimensional view of an isometric elliptical texture finishing antifriction turning insert.

FIG. 2 is a three-dimensional enlarged view of elliptical microtexture of front and back tool faces.

FIG. 3-1 is a top view of an isometric elliptical texture finishing antifriction turning insert.

FIG. 3-2 is an enlarged top view of a portion of an isometric elliptical textured finishing wear reduction turning insert.

FIG. 4-1 is a front view of an isometric elliptical textured finishing antifriction turning insert.

Fig. 4-2 is an enlarged partial front view of an isometric elliptical texture finishing antifriction turning insert.

FIG. 5-1 is a top view of another embodiment of an isometric elliptically textured finishing antifriction turning insert.

Fig. 5-2 is an elevation view of another embodiment of an isometric elliptically textured finishing wear reducing turning insert.

The labels in the figure are:

1, equidistantly and circumferentially distributing uneven elliptical microtextures; 2, equidistantly distributed elliptical microtexturing; 3, a chip breaking table; 4 volume groove; 5, a curved edge; 6, polygonal bosses; 7, a capsule-shaped bulge; 8, a heat dissipation groove; 9 a cylindrical projection.

Detailed Description

FIG. 1 is a three-dimensional drawing of an equidistant ellipse texture finish machining antifriction turning tool blade, the main body of the blade is designed into an 80-degree diamond turning tool blade, the radius of a circular arc is 0.8mm, and the material is hard alloy.

In the figures 3-1 and 3-2, elliptical microtextures which are uniformly distributed in the circumferential direction at equal intervals are distributed on the rake face, the level of the elliptical microtextures is micron level, the interval between two adjacent rows of the microtextures is 80 mu m, and the tolerance is equal difference number row of 10 mu m. The distribution mode is that the closer to the knife tip part, the more sparse the texture distribution is, and the closer to the back, the more dense the texture distribution is. By designing the distribution mode, the blade can be ensured to be in close contact with chips when in work, and the stress of the blade closer to the blade tip is larger, so that the blade is designed to be arranged in a sparse front and dense back mode, and the damage of the microtexture can be effectively avoided by the design mode. The friction between the cutter and the cutting scraps can be effectively reduced by adopting the elliptical micro-texture, and the contact area between the cutter and the cutting scraps is reduced, so that the aims of reducing the cutting force and reducing the abrasion of the front cutter face are fulfilled. In the figures 4-1 and 4-2, the rear cutter face is also distributed with equidistant elliptical micro-textures (2), and the texture is designed on the main rear cutter face, which is different from the front cutter face, so that the design is mainly designed according to the actual processing condition, and the production cost is saved. Also the elliptical microtexture on the flank face is on the order of micrometers with a pitch of 200 μm. Due to the elastic-plastic property of the workpiece, the rear cutter face and the processing surface are subjected to violent friction and extrusion, and the friction can be effectively reduced by designing the rear cutter face into an oval micro-texture, part of abrasive particles can be contained, and the abrasive particle abrasion on the rear cutter face is reduced. An oval-like chip breaking table (3) is designed on the front face of the blade in figures 5-1 and 5-2, when chips flow through the chip breaking table, the chips can be curled upwards, and when the chips are curled to a certain extent, the chips are broken along with the violent swing of the cutting, so that the purpose of chip breaking is achieved. The curved edge (5) enables the edge inclination angle of each point on the cutting edge to be different, a certain positive edge inclination angle exists in the cutter due to the effect of the curved edge during cutting, the direction of chip outflow is changed due to the edge inclination angle, the chip outflow direction is enabled to be discharged towards the chip breaking table, the machined surface of a workpiece is kept away from, and the chip is prevented from scratching the workpiece. The polygonal boss (6) is mainly used for supporting the blade, and the cutting edge is prevented from being directly contacted with a tool rest clamping part when the blade is installed, so that the cutting edge on the lower surface is prevented from being damaged. The volume groove (4) can contain part of cutting fluid, so that the effects of lubrication and heat dissipation are achieved. The capsule-shaped bulge (7) increases the heat dissipation area and enhances the heat dissipation capacity of the cutting edge of the cutter. And the heat dissipation groove (8) is positioned on the polygonal boss and is mainly used for heat dissipation of the blade. The radiating groove increases the radiating area on the surface of the blade on the one hand, and can store a small amount of cutting fluid on the other hand, thereby being beneficial to the heat exchange between the blade and the cutting fluid. The cylindrical protrusions (9) are linearly arranged, so that on one hand, the cylindrical protrusions can be beneficial to chip breaking of the cutter chips, on the other hand, the heat dissipation area is increased, and the heat dissipation effect of the front cutter face is improved.

Claims

1. The utility model provides an equidistance oval texture finish machining antifriction lathe tool piece, the blade main part design is 80 rhombus lathe tool pieces, and the circular arc radius is 0.8mm, and the material is carbide, and processing has chip breaking platform and radiating groove on the rake face, characterized by: the tool nose of the front tool face is distributed with equidistant and circumferentially distributed uneven elliptical micro-textures, and the tool nose of the rear tool face is distributed with equidistant elliptical micro-textures.

2. The isometric elliptical texture finishing antifriction turning insert of claim 1, characterized by: the micro-texture shape of the front cutter surface is an elliptical micro-texture which is distributed unevenly in the circumferential direction at equal intervals, the level of the elliptical micro-texture is a micron level, the interval size accords with an equal difference array with the first item of 80 mu m and the difference of 10 mu m, the distribution mode is that the micro-texture is distributed sparsely in the front and densely in the back, and the micro-texture is distributed sparsely closer to the cutting edge and is denser towards the back.

3. The isometric elliptical texture finishing antifriction turning insert of claim 1, characterized by: the shape of the rear cutter face microtexture is an equidistant elliptical microtexture, the grade of the microtexture is micron grade, the pitch size conforms to the first item of 200 mu m, and the arithmetic progression distribution mode with the tolerance of 10 mu m is an equidistant distribution mode.

4. The isometric elliptical texture finishing antifriction turning insert of claim 1, characterized by: the shape of the chip breaking table on the front tool surface of the blade is similar ellipse and 4 small similar ellipses, the cutting edge is a curved edge, and the curvature radius is 50 mm.

5. The isometric elliptical texture finishing antifriction turning insert of claim 1, characterized by: an annular volume groove is designed on a boss in the middle of the front cutter face, a cylindrical protrusion is arranged on the part close to the cutter tip, and a capsule-shaped protrusion is designed on the edge of the front cutter face close to the cutting edge.