CN216370195U

CN216370195U - Variable-edge type indexable turning insert special for steel

Info

Publication number: CN216370195U
Application number: CN202122233388.8U
Authority: CN
Inventors: 林文坤; 李凌祥; 池彬永; 纪甘露
Original assignee: Xiamen Huizhituo Digital Manufacturing Technology Research Institute Co ltd; Xiamen Dahonghan Metal Material Technology Co ltd
Current assignee: Xiamen Huizhituo Digital Manufacturing Technology Research Institute Co ltd; Xiamen Dahonghan Metal Material Technology Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-26
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a special variable-edge type indexable turning insert for steel, which comprises an insert main body, an upper surface, a lower surface and side surfaces, wherein the insert main body is a convex hexagonal columnar body, the insert main body is provided with three groups of vertex angles, the vertex angles are set to be 80 degrees, cutting edges are arranged at the vertex angles of the insert main body, a front cutter face is arranged on the insert main body, a platform is arranged on the insert main body, chip grooves are formed in the insert main body, bosses and inclined planes are arranged on the insert main body, obtuse angles are formed between two adjacent groups of vertex angles of the insert main body, and side grooves are formed in the insert main body. When the lathe tool is used, the lathe blade can be applied to cutting parameters in a wider range by changing the edge width and the correlation matching structure of the double front angles, chips can be smoothly removed, the problems of quick tool abrasion, easy tool breakage, heat dissipation, difficult chip breaking and the like are solved, and the lathe tool is convenient to use.

Description

Variable-edge type indexable turning insert special for steel

Technical Field

The utility model relates to the technical field of cutting blade equipment, in particular to a special variable-edge type indexable turning blade for steel.

Background

The turning blade is a tool for cutting a workpiece in the process of lathe machining, wherein a steel turning blade is one of the tools with the widest turning application, the current steel machining pursues high efficiency, the requirement on cutting parameters is higher, the machined products are more and more diversified, the dimensional precision and form and position tolerance precision of the product machining are improved, the quality requirement on the surface of the machined workpiece is more and more high, the requirement on the turning blade is more and more high, and the trend of machining the steel at high speed is gradually formed.

The chip breaker groove of the turning tool is more important to influence a turning tool in machining, the chip breaker groove of the turning tool special for the traditional steel is single, chips are not easy to break in the high-speed machining process, long or irregular chips are wound on the cutting tool or even a cutter bar, the chips are continuous and curled, the chip breaker groove is easy to block, the machined surface is scratched, the temperature is overhigh during cutting, the performance of the cutting tool and the machining quality of workpieces are seriously influenced, high-efficiency and high-precision steel turning is required to be obtained, the cutting tool has longer service life, the tool changing time is shortened, a smooth chip removal structure in machining is particularly important while high-efficiency cutting parameters are maintained, and therefore the variable-edge type indexable turning tool special for the steel needs to be provided.

Disclosure of Invention

The utility model aims to provide a variable-edge type indexable turning insert special for steel, which can be applied to cutting parameters in a wider range by changing the edge width and the associated matching structure of double rake angles, has smooth chip removal, and avoids the problems of fast tool abrasion, easy tool breakage, heat dissipation, difficult chip breaking and the like, so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a blade-variable indexable turning blade special for steel comprises a blade main body, an upper surface, a lower surface and side surfaces, wherein the blade main body is a convex hexagonal columnar body, the blade main body is provided with three groups of vertex angles, the vertex angles are set to be 80 degrees, the blade main body is symmetrically arranged along the bisector of the vertex angles, the vertex angles of the blade main body are provided with cutting edges, each cutting edge comprises an arc edge and a side edge, the side edges are arranged at the edge of the blade main body and positioned between two adjacent groups of arc edges, the blade main body is provided with a front cutter surface which is connected with the arc edges, the blade main body is provided with a platform, the blade main body is provided with chip containing grooves, the blade main body is provided with a boss and an inclined surface, two groups of chip breaking holes are respectively arranged on the bottom surfaces of the two sides of the boss, and the depth of the two groups of chip breaking holes is set to be 0.026-0.035mm, the distance between two sets of chip breaking holes is set to be 1.2mm, an obtuse angle is arranged between two adjacent sets of vertex angles of the blade body, a side groove is arranged on the blade body, and the side groove is arranged at the obtuse angle between the two adjacent sets of vertex angles of the blade body.

Preferably, the upper surface and the lower surface are arranged in parallel, the side surfaces are positioned between the upper surface and the lower surface, an included angle between two adjacent groups of side surfaces is set to be 80 degrees, and a central hole is formed in the blade main body.

Preferably, the rake surface includes a first rake angle and a second rake angle, the edge width of the first rake angle is set to 0.2-0.27mm, the angle of the first rake angle is set to 5-7 °, and the angle of the second rake angle is set to 18.5-21 °.

Preferably, it is protruding to be provided with the wave on the blade main part, the wave is protruding to include first bellying and second bellying, first bellying is located the bellied intermediate position of wave, the second bellying is located the bellied both ends of wave.

Preferably, all be provided with three groups of circular-arc recesses on upper surface and the lower surface, three groups of circular-arc recess is corresponding the setting in three groups of apex angles respectively, the width of circular-arc recess sets up to 0.3mm, the radius of circular-arc recess sets up to 1.8-2.5 mm.

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

1. according to the utility model, through the matching design of the variable-edge-width and variable-double-rake-angle structures, the large chip groove is matched, the cutting edge strength is greatly increased while the sharp cutting performance is achieved, and the cutting edge structure can be applied to continuous and impact working conditions, can smoothly remove chips and does not accumulate chips;

2. according to the utility model, through the design of the combined structure of the chip breaking hole, the wave bulge and the platform, the chip processing of a larger range of cutting parameter working conditions is provided, the chips can be well controlled in different feeding and cutting depths, the universality is enhanced, and the chip breaking processing and the high-efficiency processing of the blade in different parameter ranges are realized;

3. according to the utility model, through the design of the arc groove, the overall structural strength of the blade is increased, the material is saved, and the green development concept is met;

4. according to the utility model, the bottom surface of the large chip groove is designed to be higher at the chip breaker groove, the bottom surface is transited to the wave bulge and then starts to gradually descend along a certain rule, the side groove at the obtuse angle is the lowest plane, the height difference combination of the bottom surfaces effectively contributes to chip circulation and chip breaking, and the structural strength of the cutting part is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of an axial measurement structure according to the present invention.

In the figure: 1. a blade body; 2. a central bore; 3. an upper surface; 4. a lower surface; 5. a side surface; 6. a cutting edge; 601. a circular arc edge; 602. a side edge; 7. a rake face; 701. a first rake angle; 702. a second rake angle; 8. a platform; 9. the wave bulges are formed; 901. a first boss portion; 902. a second boss portion; 10. a chip pocket; 11. an inclined surface; 12. a boss; 13. chip breaking holes; 14. a circular arc-shaped groove; 15. and side grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a blade-changing type indexable turning blade special for steel comprises a blade main body 1, an upper surface 3, a lower surface 4 and side surfaces 5, wherein the blade main body 1 is a convex hexagonal columnar body, the upper surface 3 and the lower surface 4 are arranged in parallel, the side surfaces 5 are positioned between the upper surface 3 and the lower surface 4, six groups of side surfaces 5 are arranged, an included angle between every two adjacent groups of side surfaces 5 is set to be 80 degrees or 160 degrees, and a central hole 2 is formed in the blade main body 1;

the cutting insert comprises an insert body 1 and a cutting blade, wherein the insert body 1 is provided with three groups of vertex angles, the vertex angles are set to be 80 degrees, the insert body 1 is symmetrically arranged along an angular bisector of the vertex angles, the vertex angles of the insert body 1 are provided with cutting edges 6, each cutting edge 6 comprises an arc edge 601 and a side edge 602, the side edge 602 is arranged at the edge of the insert body 1 and is positioned between the two adjacent groups of arc edges 601, a front cutter face 7 is arranged on the insert body 1, and the front cutter face 7 is connected with the arc edges 601;

the rake face 7 comprises a first rake angle 701 and a second rake angle 702, the edge width of the first rake angle 701 is set to be 0.2-0.27mm, the angle of the first rake angle 701 is set to be 5-7 degrees, the angle of the second rake angle 702 is set to be 18.5-21 degrees, the edge width increases from the arc top angle to the obtuse angle in the middle of the arc edge, the double rake angle at the arc top angle changes progressively along the arc edge, and the matching design of the variable edge width and the variable double rake angle ensures that the cutting edge has a strong structure while keeping high sharpness, and the two angles are considered simultaneously and can be easily applied to continuous working conditions and impact working conditions;

the blade comprises a blade body 1, a platform 8 is arranged on the blade body 1, the platform 8 is centrosymmetric along a vertex angle bisector and is distributed along a cutting edge and vertex angles which are separated from the cutting edge smoothly, a wave protrusion 9 is arranged on the blade body 1, the wave protrusion 9 comprises a first protrusion portion 901 and a second protrusion portion 902, the first protrusion portion 901 is located in the middle of the wave protrusion 9, the second protrusion portion 902 is located at two ends of the wave protrusion 9, a chip containing groove 10 is arranged on the blade body 1, a boss 12 and an inclined surface 11 are arranged on the blade body 1, the platform 8 is provided with a protrusion along the axial direction of a central hole 2 on the end surface of the blade body 1, the blade width, a first front angle 701 and a second front angle 702 are sequentially distributed from a blade tip to the central axis of the blade body 1, the chip containing groove 10 is composed of the wave protrusion 9, a front blade surface 7, the inclined surface 11 and the boss 12, the wave protrusion 9 and the boss 12 are used for connecting the rear portion of the blade body to be distributed along the vertex angle, The wavy bulge 9 is a strip-shaped first bulge 901 with two sides extending to the front tool face, the middle part is a second bulge 902 with a reserved large chip containing space, the angle between the strip-shaped bulges on the two sides of the wavy bulge 9 and an angular bisector is 40 degrees, the distance between the vertex of the middle end part and an arc tool nose is 1.38-1.45mm, the reflection angle of the bulges is 55 degrees, and the angle of the inclined plane 11 is 13 degrees;

the chip smoothly flows through the bottom of the large chip groove 10 along the concave arc surface during cutting, according to different feeding and cutting depth parameters, the chip is deformed, curled or broken along the wave bulge 9 and then further hit the inclined surface 11 of the connecting boss 12, the elastic side is curled or broken, the large chip groove 10 formed by the wave bulge 9 and the front cutter surface 7 is beneficial to chip removal and chip accumulation prevention, the bottom surface of the chip groove 10 of the cutter blade body 1 is higher, the structural strength of the cutting section of the cutter blade is increased, the height of the bottom surface of the chip breaking hole 13 is gradually reduced from the back of the wave bulge 9 to the side concave groove 15 at the obtuse angle adjacent to the apex angle as the lowest plane, the combination of the height difference of the bottom surfaces is effectively beneficial to chip breaking treatment, the environment is protected, according to different cutting depth working conditions, the chip further flows through the chip breaking hole 13 from the front cutter surface 7 after flowing through the bottom of the chip groove 10, at the moment, the bending of the chip is increased, the temperature is reduced, or the cutting chip is broken or is further curled to strike the boss 12, the cutting chip is broken, the cutting chip is well controlled, the groove-shaped strength is enhanced by the structural combination of the chip breaking hole 13, the wave protrusion 9 and the platform 8, the cutting chip treatment of the working condition with a wider range of cutting parameters is provided, the cutting chip can be well controlled in different feeding and cutting depths, and the universality is enhanced;

two groups of chip breaking holes 13 are respectively arranged on the bottom surfaces of two sides of the boss 12, the depth of the two groups of chip breaking holes 13 is set to be 0.026-0.035mm, the distance between the two groups of chip breaking holes 13 is set to be 1.2mm, and the chip breaking holes 13 are kept to be in a smaller state closer to the arc tool tip, an obtuse angle is arranged between two groups of adjacent vertex angles of the blade body 1, a side groove 15 is arranged on the blade body 1, the side groove 15 is arranged at the obtuse angle between two groups of adjacent vertex angles of the blade body 1, the side groove 15 is composed of a front tool face 7 at a side edge 602, the boss 12 and the platform 8, the chip reflecting angle of the side groove is 55 degrees, the boss 12 and the platform 8 are discontinuous, chips can be properly processed in a larger parameter range and can be radiated through the arrangement of the two groups of chip breaking holes 13, the bottom surface 10 of the blade body 1 is higher, the bottom surface height of the chip breaking holes 13 starts to descend from the wave bulge 9 in sequence, and the side groove 15 at the vertex angle adjacent blunt angle is the lowest plane, the height difference between the bottom surface of the chip pocket 10 and the lowest plane of the side groove 15 is 0.16mm, the descending rule of the wavy bulge 9 is 4-degree straight line descending, and the height difference of the bottom surface effectively improves the structural strength of the cutting part of the blade;

the edge width is gradually increased from a top angle to an obtuse angle at the middle part of the arc-shaped edge, a first front angle 701 and a second front angle 702 at the arc-shaped top angle are gradually changed along the arc-shaped edge, a front knife face 7 at a side edge 602, a boss 12 and a side groove 15 formed by a platform 8 have a large chip containing space, chip removal is further enhanced by matching a chip breaking hole 13 at the arc-shaped edge with the boss 12 formed by a large chip reversing angle, chips are not accumulated, or are broken at the chip breaking hole 13, or hit the boss 12 to be broken, or are rolled out from a side with a large curvature at the chip breaking hole, and meanwhile, the matching design of changing the edge width and changing the double front angle ensures that the cutting edge has a strong structure while keeping high sharpness, and the two are taken into consideration simultaneously, and the cutting edge can be easily applied to continuous working conditions and impact working conditions; in order to keep the concept of green environmental protection;

three groups of arc-shaped grooves 14 are arranged on the upper surface 3 and the lower surface 4, the three groups of arc-shaped grooves 14 are correspondingly arranged at three groups of vertex angles respectively, the width of each arc-shaped groove 14 is set to be 0.3mm, the radius of each arc-shaped groove 14 is set to be 1.8-2.5mm, under the condition that the positioning of the blade is not influenced, the hard alloy material is effectively saved, and the structural strength of the blade is enhanced.

When the blade is used specifically, under the condition that the blade body 1 is fully positioned, hard alloy materials can be effectively saved, the green and environment-friendly concept is realized, the unique double-arc-edge design at the cutting edge 6 and the matching between the double-front-angle variable-edge design which is changed along the cutting edge 6 and the large chip groove 10 are facilitated, the smooth chip removal is facilitated, the cutting edge is sharp, and simultaneously has a high-strength structure, the front blade face 7 and the symmetrical wave protrusions 9 form the large chip groove 10, chips flow through the bottom of the chip groove 10 and then are curled along the wave protrusions 9 and hit the boss 12 arranged behind the wave protrusions 9, elastic chip rolling or chip breaking is generated, the contact area between the chips and the surface of the blade is reduced, the frictional resistance of the chips to the chip removal is reduced, the structural strength of the chips hitting the blade (the protrusions and the bosses) is high, and the matching between the two groove structures distributed along the front blade face of the arc-edge and the protrusions can realize the cutting within different parameter ranges The bits curl, break up, and further reduce with the friction of smear metal, avoid the smear metal to cohere, increase heat radiating area, realize the promotion of chip breaking ability and machining performance in the machining parameter on a large scale in the turning steel processing, high-efficient processing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steel special use becomes indexable turning insert of sword type, includes blade main part (1), upper surface (3), lower surface (4) and side (5), its characterized in that: the utility model discloses a cutting insert, including blade main body (1), blade main body (1) sets up to convex hexagon's column, blade main body (1) is provided with three group's apex angles, and the apex angle sets up to 80, blade main body (1) is the symmetry along the angular bisector of apex angle and sets up, the apex angle department of blade main body (1) is provided with cutting edge (6), cutting edge (6) include circular arc sword (601) and side sword (602), side sword (602) set up in the border department of blade main body (1), and side sword (602) are located between two sets of adjacent circular arc sword (601), be provided with rake face (7) on blade main body (1), and rake face (7) are connected with circular arc sword (601), be provided with platform (8) on blade main body (1), be provided with chip groove (10) on blade main body (1), be provided with boss (12) and inclined plane (11) on blade main body (1), two groups of chip breaking holes (13) are respectively formed in the bottom surfaces of the two sides of the boss (12), the depth of each group of chip breaking holes (13) is set to be 0.026-0.035mm, the distance between the two groups of chip breaking holes (13) is set to be 1.2mm, an obtuse angle is formed between two adjacent groups of vertex angles of the blade body (1), a side groove (15) is formed in the blade body (1), and the side groove (15) is formed in the obtuse angle between the two adjacent groups of vertex angles of the blade body (1).

2. The variable-edge type indexable turning insert special for steel products according to claim 1, wherein: upper surface (3) and lower surface (4) are parallel arrangement, side (5) are located between upper surface (3) and lower surface (4), and the contained angle between adjacent two sets of side (5) sets up to 80, centre bore (2) have been seted up on blade main part (1).

3. The variable-edge type indexable turning insert special for steel products according to claim 1, wherein: the rake face (7) comprises a first rake angle (701) and a second rake angle (702), the edge width of the first rake angle (701) is set to 0.2-0.27mm, the angle of the first rake angle (701) is set to 5-7 °, and the angle of the second rake angle (702) is set to 18.5-21 °.

4. The variable-edge type indexable turning insert special for steel products according to claim 1, wherein: the blade body (1) is provided with a wave protrusion (9), the wave protrusion (9) comprises a first protrusion portion (901) and a second protrusion portion (902), the first protrusion portion (901) is located in the middle of the wave protrusion (9), and the second protrusion portion (902) is located at two ends of the wave protrusion (9).

5. The variable-edge type indexable turning insert special for steel products according to claim 1, wherein: all be provided with three sets of circular-arc recess (14) on upper surface (3) and lower surface (4), three sets of circular-arc recess (14) are corresponding the setting in three sets of apex angles respectively, the width of circular-arc recess (14) sets up to 0.3mm, the radius of circular-arc recess (14) sets up to 1.8-2.5 mm.