Profiling blade with variable edge width

Abstract

The utility model discloses a variable edge width profiling blade, which comprises a blade main body, the blade main body comprises a front blade surface, a rear blade surface, a bottom clamping surface, a side clamping surface and an edge band, the edge band is composed of a plurality of edge band width variable parts, the edge band is arranged at the connecting part between the front blade surface and the rear blade surface, and the front blade surface and the rear blade surface are arranged on the blade main body. The margin width is related to the change of the cutting depth; the blade edge on the outermost side of the blade strip is a main cutting blade; the rear blade surface is connected with the side clamping surfaces, and the blade main body is provided with a plurality of side clamping surfaces; and the bottom clamping surface is arranged on the opposite side of the edge strip. The profiling blade can solve the balance problem of blade sharpness and blade strength, so that a cutter is better to use and more durable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to numerical control tool technical field, especially, relate to a profiled blade of variable blade width. BACKGROUND

[0002] The profiled round blade milling cutter is widely applied to mold processing, steam turbine blade processing, plane milling of difficult cutting material, profiled milling of special-shaped material, aircraft engine part processing and aircraft landing gear processing due to multiple use of edge, good blade strength, low processing cost, simple programming and flexibility.

[0003] The blade width of the profiled processing blade (including milling cutter, turning tool, slot cutter, not limited to single-sided and double-sided blade) used in the mechanical processing industry is uniform, but the cutting thickness of the circular cutter is from thin to thick, the thicker the cutting thickness, the greater the cutting force, and the higher the requirement for the strength of the cutter, in fact, the wider the blade, the higher the strength, and the profiled processing blade structure with uniform blade is unreasonable, so that the sharpness and high strength of the cutter cannot be balanced reasonably, thereby affecting the strength and durability of the blade.

[0004] The patent with the patent number CN215902815U discloses a profiled milling blade with a back positioning surface, which comprises a ring-shaped base body and a milling part connected with the base body, the base body is integrally formed with a mounting surface on the opposite side of the milling part, a slot is formed in the middle of the base body, a back positioning groove is formed on the mounting surface, and eight groups of back positioning grooves are arranged on the mounting surface, a certain gap is left between every two groups of tool heads, the gap is set as a chip removal groove one, the tool head is provided with a blade angle on both sides, a chip removal groove two is formed in the middle of the tool head, and the chip removal groove two penetrates the tool head, the profiled round blade milling cutter can be positioned by the back positioning groove on the mounting surface during installation, and eight groups of back positioning grooves are arranged, so that eight times of positioning can be realized. UTILITY MODEL CONTENTS

[0005] The utility model mainly aims at the fixed blade width of the blade in the prior art, the problem that the sharpness and strength of the blade cannot be balanced well, and the problem that the blade is not durable, and proposes a profiled blade with variable blade width.

[0006] In view of the above technical problems, the technical scheme of the utility model is as follows:

[0007] The utility model provides a profiled blade of variable width, comprising a blade body, the blade body comprises a rake face, a relief face, a bottom clamping surface, a side clamping surface and a blade strip, the blade strip is composed of a plurality of parts of variable width, the blade strip is arranged at the joint between the rake face and the relief face, the blade strip width is positively correlated with the change of chip thickness, the outermost blade edge of the blade strip is the main cutting edge, the relief face is connected with the side clamping surface, a plurality of side clamping surfaces are arranged on the blade body, the bottom clamping surface is arranged on the opposite side of the blade strip, the bottom clamping surface refers to the surface of the blade in contact with and fixed by the clamping device, and the side clamping surface refers to the surface of the side of the blade in contact with and fixed by the clamp.

[0008] Further, the blade body is annular, and a screw positioning hole is arranged at the center of the blade body.

[0009] Further, the blade body is symmetrical about the central axis of the screw positioning hole.

[0010] Further, the blade strip is a circular plane.

[0011] Further, the inner side edge of the blade strip is a continuous curve.

[0012] Further, the rake face is inclined towards the inside of the blade body, and the rake face is a plane.

[0013] Further, the side clamping surface is at least eight, and the side clamping surface is connected with the bottom clamping surface.

[0014] Further, the bottom clamping surface is parallel to the blade strip.

[0015] Further, the angle between the relief face and the blade strip is an acute angle.

[0016] Further, the main cutting edge is formed by a plurality of repeatedly changed blade strips, and the number of times of repeated change of the blade strip is the same as the number of times of use of the cutting depth of the blade.

[0017] Compared with the prior art, the utility model has the beneficial effects as follows:

[0018] The utility model discloses a profiled blade of variable width, comprising a blade body, the blade body comprises a rake face, a relief face, a bottom clamping surface, a side clamping surface and a blade strip, the blade strip is composed of a plurality of parts of variable width, the blade strip is arranged at the joint between the rake face and the relief face, the blade strip width is positively correlated with the change of chip thickness, the outermost blade edge of the blade strip is the main cutting edge, the relief face is connected with the side clamping surface, a plurality of side clamping surfaces are arranged on the blade body, the bottom clamping surface is arranged on the opposite side of the blade strip, the bottom clamping surface refers to the surface of the blade in contact with and fixed by the clamping device, and the side clamping surface refers to the surface of the side of the blade in contact with and fixed by the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of a variable blade width profiling blade;

[0020] Figure 2 It is a top view of a variable blade width profiling blade;

[0021] Figure 3 It is a sectional view of a variable blade width profiling blade;

[0022] Figure 4 It is a bottom view of a variable blade width profiling blade;

[0023] Figure 5 It is a blade width variation schematic view of the blade rotating clockwise of the utility model.

[0024] In the above-mentioned figure, 1. blade body; 2. blade belt; 3. rake face; 4. relief face; 5. side clamping face; 6. bottom clamping face; 7. screw positioning hole; 8 main cutting edge; 9. installation platform; T. chip thickness. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of the utility model application scheme, the utility model is described in detail below through specific implementation manners, and in combination with its accompanying drawings.

[0026] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other manners different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0027] In addition, in the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of description, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicative or implied of relative importance or implied indication of the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0028] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection, also can be communication;Can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements or the interaction of two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0029] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature;The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium.In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] Embodiment 1

[0031] As shown in Figures 1 to 4 A variable-width profiling blade, comprising a blade body 1, the blade body 1 comprising a rake face 3, a relief face 4, a bottom clamping face 6, a side clamping face 5 and a blade strip 2, the blade strip 2 is composed of multiple parts with varying widths, the blade strip 2 is provided at the junction between the rake face 3 and the relief face 4, the blade strip 2 width is positively correlated with the change of chip thickness, the blade strip 2 width changes from narrow to wide according to the chip thickness;The outermost edge of the blade strip 2 is the main cutting edge 8;The relief face 4 is connected with the side clamping face 5, and multiple side clamping faces 5 are provided on the blade body 1;The bottom clamping face 6 is provided on the opposite side of the blade strip 2.

[0032] In this embodiment, as shown in Figure 1 And Figure 5 The main cutting edge 8 is located on the outermost edge of the blade strip 2, and the main cutting edge 8 is formed by overlapping multiple segments of the blade strip 2 with repeated changes, the number of repeated changes of the blade strip 2 is the same as the number of times the cutting depth of the blade is used, that is, the actual cutting depth does not exceed the recommended depth, which can be used 8 times, otherwise the number of times will be reduced;Through the design of the variable blade strip 2, the strength of the blade in the high-stress part is higher, and the low-stress part is sharper, and the structural performance is further improved.

[0033] The blade body 1 is annular, a screw positioning hole 7 is arranged at the geometric center of the blade body 1, the blade body 1 is symmetrical about the central axis of the screw positioning hole 7, and the screw positioning hole 7 penetrates through the entire blade body 1 structure; an installation platform is further arranged on the inner circle of the screw positioning hole 7, and the profiled blade can be fixedly installed with the cutter head through the installation platform 9; the installation platform 9 is a boss, which facilitates firm installation of the profiled blade, thereby improving the stability of the installed cutter.

[0034] As shown in Figure 1 , the rake face 3 is connected with the blade band 2, a plurality of uniformly distributed rake faces 3 are arranged on the blade body 1, and the rake faces 3 are inclined towards the inside of the blade body 1. The inclination of the rake face 3 helps to reduce the load on the blade during cutting, and the inclined rake face 3 enables the blade to cut into the material more smoothly, thereby reducing the cutting resistance; the inclined rake face 3 helps to improve the stability of the cutting process, reduces vibration and impact during cutting, and thereby improves machining precision and surface quality.

[0035] As shown in Figure 4 , in this embodiment, eight side clamping faces 5 are arranged on the blade body 1 in sequence and are symmetrical about the axis of the screw positioning hole 7, and the side clamping faces 5 are planes. The blade can be positioned multiple times, which makes the positioning more accurate, greatly improves the installation efficiency, and has better clamping force and rigidity, thereby avoiding relative rotation between the profiled blade and the cutter head and improving the safety performance.

[0036] Embodiment 2

[0037] As shown in Figure 1 and Figure 2 , in this embodiment, the blade band 2 is composed of a plurality of parts with repeatedly changing widths, and the blade band 2 is arranged at the joint between the rake face 3 and the relief face 4; as shown in Figure 5 , when the blade rotates clockwise during operation, the width of the blade band 2 changes from thin to thick according to the design value calculated by the main offset angle sine value of the cutting position of the cutter, the feed amount of the cutter and the correction coefficient along the feed direction of the blade, and the specific expression is T=F*sin(kr), wherein T is the thickness of the chip, F is the feed amount, and kr is the included angle between the tangent at the circular arc and the horizontal line.

[0038] The width of the blade band 2 is generally L=T*a, wherein L is the width of the blade band, and a is a constant coefficient, which is generally 0.8, and the value of the constant coefficient can also be selected according to specific conditions. As can be seen from the above expression, the width of the blade band 2 is positively correlated with the chip thickness, and the width of the blade band 2 changes from thin to thick with the change of the chip thickness, and the width of the whole blade band 2 changes uniformly. The chip thickness of the cutter changes from thin to thick, and the thicker the chip, the greater the chip force of the cutting edge part, and the higher the requirement for the strength of the cutter. In fact, the wider the width of the blade band of the cutter, the higher the strength, that is, the design of the whole blade band 2 changing from narrow to wide with the chip changing from thin to thick is more reasonable, and the cutter blade can better balance the sharpness of the cutter and the strength of the cutter, and increase the service life of the cutter blade.

[0039] The blade band 2 is integrally formed, so that the cutter blade is also more firm and durable. Figure 1 As shown in the figure, Figure 2 The blade band 2 is a continuous annular plane, and the inner side of the blade band 2 is a continuous curve. The continuously changing width of the blade band 2 ensures the strength and durability of the cutter blade.

[0040] Embodiment 3

[0041] As shown in the figure, Figures 1 to 4 A variable-width profiling cutter blade, comprising a cutter blade body 1, the cutter blade body 1 comprising a rake face 3, a relief face 4, a bottom clamping face 6, a side clamping face 5 and a blade band 2, the blade band 2 being composed of a plurality of parts with varying widths, the blade band 2 being arranged at the joint between the rake face 3 and the relief face 4, the width of the blade band being positively correlated with the change in chip thickness, that is, the width of the blade band 2 changes from narrow to wide according to the chip thickness; the outermost cutting edge of the blade band 2 is a main cutting edge 8; the relief face 4 is connected to the side clamping face 5, and the cutter blade body 1 is provided with a plurality of side clamping faces 5; and the bottom clamping face 6 is arranged on the opposite side of the blade band 2.

[0042] In this embodiment, the width design of the blade band 2 of the utility model can also be used on profiling cutter blades, including single-sided and double-sided circular turning cutter blades, circular milling cutter blades, willow-shaped milling cutter blades, profiling round-head groove cutter blades, whole-hard ball-end cutter tools and the like, all of which can achieve the effect of balancing the sharpness and strength of the cutter, making the cutter more practical and durable.

[0043] Obviously, the above-described embodiments of the utility model are merely examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above-described description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A variable land width profiling blade comprising a blade body, characterised in that, The insert body comprises a rake face, a relief face, a bottom clamping face, a side clamping face and an edge band, the edge band is composed of a plurality of edge band width changing parts, the edge band is arranged at the joint between the rake face and the relief face, the edge band width is positively correlated with the change of chip thickness, the outermost edge of the edge band is the main cutting edge, the relief face is connected with the side clamping face, a plurality of side clamping faces are arranged on the insert body, and the bottom clamping face is arranged on the opposite side of the edge band.

2. A variable land width profiling blade according to claim 1 wherein, The insert body is in a ring structure, and a screw positioning hole is arranged at the center of the insert body.

3. A variable land width profiling blade according to claim 2, wherein, The insert body is symmetrical about the central axis of the screw positioning hole.

4. The variable land width profiling blade of claim 1 wherein, The edge band is a circular plane.

5. A variable land width profiling blade according to claim 4, wherein, The inner side of the edge band is a continuous curve.

6. A variable land width profiling blade according to claim 1 wherein, The rake face is inclined to the inside of the insert body, and the rake face is a plane.

7. A variable land width profiling blade according to claim 1 wherein, The side clamping face is at least eight, and the side clamping face is connected with the bottom clamping face.

8. The variable land width profiling blade of claim 1 wherein, The bottom clamping face is parallel to the edge band.

9. The variable land width profiling blade of claim 1 wherein, The included angle between the relief face and the edge band is an acute angle.

10. The variable land width profiling insert according to claim 1, wherein, The main cutting edge is formed by a plurality of repeatedly changed edge bands, and the number of repeated changes of the edge band is the same as the number of uses of the cutting depth of the insert.

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