Profile forming cutter

Abstract

The utility model relates to the technical field of machining, and discloses a profile forming cutter which comprises a cutter handle. The cutter head is arranged at the end part of the cutter handle; the tool bit comprises a plurality of cutting edge parts and is used for machining different parts of the outline of a product at the same time. The cutter head is provided with a plurality of cutting edge parts, different parts of a product contour can be machined at the same time, multiple cutter changing procedures are not needed, one-time machining forming can reduce errors, the machining efficiency and the machining precision are improved, the machining cost can be reduced, and different machining requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, and more specifically, particularly relates to a profile forming knife. Background Art

[0002] At present, in the field of 3C electronic products, the outer shells and internal parts of most products are complex curved surfaces or groove structures. When processing such products, in addition to processing the outer contour of the required position of the product, it is often necessary to process the parts connected with it (including the upper / lower plane and side of the product). In order to meet the needs of multi-plane processing, 2 to 5 different types of tools are usually required, and the tools are changed in sequence according to the specific requirements of the product to realize the processing of different positions of the product contour, which will seriously affect the processing efficiency. At the same time, there is a certain error in the manufacturing accuracy of the tool, and the positioning error is also increased during the tool change process. The more the number, the greater the error, which also seriously affects the product processing accuracy. In addition, the use of multiple tools also greatly increases the processing cost. Summary of the invention

[0003] The utility model aims to provide a contour forming cutter to solve the technical problems existing in the prior art, which can process different parts of the product contour at the same time, improve the processing efficiency and processing accuracy, and reduce the processing cost.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] The utility model provides a profile forming knife, comprising:

[0006] Handle;

[0007] A cutter head, arranged at the end of the cutter handle;

[0008] The cutter head comprises a plurality of cutting edge portions, which are used for processing different parts of the product contour at the same time.

[0009] Furthermore, the tool head includes a first blade portion and a second blade portion, the first blade portion and the second blade portion are arranged opposite to each other along the axial direction of the tool handle, and a processing gap is formed between the first blade portion and the second blade portion.

[0010] Furthermore, the shank includes a first base, a second base and a third base arranged in sequence along the axial direction, and the cross-sectional area of ​​the second base perpendicular to the axis of the shank is smaller than that of the first base and the third base; the first blade portion is arranged on the first base, and the second blade portion is arranged on the third base.

[0011] Furthermore, the knife handle is provided with blade grooves for mounting the first blade portion and the second blade portion respectively; the blade grooves are arranged in 1 to 8 groups along the circumference of the knife handle.

[0012] Furthermore, blades are formed on the side surfaces and opposite end surfaces of the first blade portion and the second blade portion respectively; the front angle of the blade is -5° to 20°, the first back angle is 0° to 9°, the second back angle is 10° to 15°, the blade tooth width is 0.01mm to 0.1mm, and the blade tooth height is 0.1mm to 2mm; the overall blade width of the first blade portion and the second blade portion is 0.5mm to 2.5mm.

[0013] Furthermore, the first base diameter D1, the second base diameter D2, and the third base diameter D3, D1 / D2=2.5~4.5, D1 / D3=1.5~3.5; the first blade length L1, the second blade length L2, D1 / L1=1.5~3.5, D3 / L2=2.5~4.5; the first blade length L11, the second blade length L22, L1 / L11=3.5~6.5, L2 / L22=1.5~3.5.

[0014] Furthermore, a clearance groove is provided on the first substrate and located on one side of the first blade portion, and / or on the third substrate and located on one side of the second blade portion, and the angle between the bottom surface of the clearance groove and the corresponding end surface is 0 to 15°.

[0015] Furthermore, the gap between the first blade portion and the second blade portion is 0.2 mm to 1 mm; and the height of the third base is 0 to 5 mm greater than that of the second blade portion.

[0016] Furthermore, the angle between the rake face of the first blade portion and / or the second blade portion and the corresponding rotation center line is a positive rake angle of 0 to 20°.

[0017] Furthermore, the material of the shank includes tungsten steel, stainless steel or high-speed steel, and the material of the blade includes PCD or CBN.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model is an integrated forming contour knife. By arranging multiple blade parts on the knife head, different parts of the product contour can be processed simultaneously without multiple tool changing procedures. One-time forming can reduce errors, improve processing efficiency and processing accuracy, and also reduce processing costs to meet different processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme of the utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 This is a schematic diagram of the structure of the forming contour knife.

[0022] Figure 2 It is a partial schematic diagram of the forming contour knife of the utility model.

[0023] Figure 3 Another partial schematic diagram of the contour forming knife of the utility model.

[0024] Figure 4 It is a partial enlarged view of the contour forming knife of the utility model.

[0025] Figure 5 This is a blade parameter diagram of the contour forming knife of the utility model.

[0026] Figure 6 It is the front view of the contour forming knife of the utility model.

[0027] Among them, 10-handle, 20-tool, 21-first blade portion, 22-second blade portion, 101-first base, 102-second base, 103-third base, 11-first blade groove, 12-second blade groove. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0029] The terms "including" and "having" and any variations thereof in the specification and claims of the utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as "connected to" another element, it may be directly or indirectly connected to the other element.

[0030] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] See also Figure 1 to Figure 3 As shown, the utility model provides a contour forming knife, including a knife handle 10 and a knife head 20. One end of the knife handle 10 is a clamping portion, and the other end of the knife handle 10 is provided with the knife head 20. The knife head 20 is coaxially arranged with the knife handle 10, which is convenient for processing to form the contour knife and is also convenient for coordinating and positioning with a machine tool to complete reliable processing of the product contour.

[0032] The cutter head 20 includes a plurality of cutting edges for processing different parts of the product contour at the same time, thereby improving processing efficiency.

[0033] Furthermore, the cutter head 20 includes a first blade portion 21 and a second blade portion 22, which are arranged along the axial direction of the handle 10 and are relatively arranged, and a processing gap is formed between the first blade portion 21 and the second blade portion 22, so as to facilitate the cooperation with the part to be processed of the product contour, thereby realizing the simultaneous processing of different parts of the product contour.

[0034] Furthermore, the shank 10 includes a first base 101, a second base 102 and a third base 103 arranged in sequence along the axial direction, and the second base 102 is located between the first base 101 and the third base 103; the first blade portion 21 is arranged on the first base 101, and the second blade portion 22 is arranged on the third base 103.

[0035] Specifically, the cross-sectional area of ​​the second substrate 102 perpendicular to the axis of the shank 10 is smaller than that of the first substrate 101 and the third substrate 103. The second substrate 102 corresponds to the gap position between the first blade portion 21 and the second blade portion 22, which facilitates the installation of the first blade portion 21 and the second blade portion 22 and forms a processing gap, and also facilitates both to process the product contour.

[0036] In this embodiment, the diameter of the first substrate 101 is D1, the diameter of the second substrate 102 is D2, and the diameter of the third substrate 103 is D3, that is, D1 / D2=2.5~4.5, D1 / D3=1.5~3.5, which can ensure the reliability of the overall structure of the contour knife; the diameter D2 of the second substrate 102 is preferably 2~4mm, which can strengthen the substrate and extend the service life. Specifically, D1 / D2 can be 2.5, 3, 3.5, 4.5 or any value within the range, and D1 / D3 can be 1.5, 2, 2.5, 3.5 or any value within the range, which ensures the overall structural strength and can meet different processing requirements.

[0037] In this embodiment, the length of the first blade portion 21 is L1, and the length of the second blade portion 22 is L2, that is, D1 / L1=1.5~3.5, D3 / L2=2.5~4.5. Specifically, D1 / L1 can take values ​​of 1.5, 3, 3.5 or any value within the range, and D3 / L2 can take values ​​of 2.5, 3.5, 4.5 or any value within the range, which can ensure the installation reliability of the blade portion.

[0038] In this embodiment, the length of the first blade portion 21 (i.e., the length of the end of the first blade portion 21 protruding from the surface of the first substrate 101) is L11, and the length of the second blade portion 22 (i.e., the length of the end of the second blade portion 22 protruding from the surface of the third substrate 103) is L22.

[0039] L1 / L11=3.5~6.5, L2 / L22=1.5~3.5. Specifically, L1 / L11 can take values ​​of 3.5, 4.5, 5, 6.5 or any value within the range, and L2 / L22 can take values ​​of 1.5, 3, 3.5 or any value within the range, which facilitates the processing of blades on the first blade portion 21 and the second blade portion 22 and ensures the reliability of the structure.

[0040] Furthermore, blade grooves for installing the first blade portion 21 and the second blade portion 22 are respectively provided on the handle 10, that is, the first base 101 is provided with a first blade groove 11, and the third base 103 is provided with a second blade groove 12 corresponding to the first blade groove 11, so as to facilitate the installation of both the first blade portion 21 and the second blade portion 22.

[0041] Furthermore, the first blade portion 21 and the second blade portion 22 are respectively arranged in multiple groups along the circumference of the handle 10, and the first blade portion 21 and the second blade portion 22 are respectively arranged in 1 to 8 groups, and the specific value can be 2, 4, 6 or 8, which can meet different processing requirements. Similarly, the blade grooves including the first blade grooves 11 and the second blade grooves 12 are also respectively arranged in 1 to 8 groups along the circumference of the handle 10, and the corresponding blade portions are respectively installed.

[0042] Furthermore, an avoidance groove 13 is provided on the first substrate 101 and located on one side of the first blade portion 21, and / or on the third substrate 103 and located on one side of the second blade portion 22, to facilitate edge processing of the second blade portion 22 and avoid cutting the first substrate 101 and / or the third substrate 103 during laser processing.

[0043] Specifically, the angle between the bottom surface of the avoidance groove 13 and the corresponding end surface of the first substrate 101 and / or the third substrate 103 is 0 to 15°, and can be 0°, 5°, 10°, 15° or any value within the range. This can avoid damage to the first substrate 101 and / or the third substrate 103 when the second blade portion 22 is formed by laser sharpening, thereby protecting the overall structure of the contour knife.

[0044] Furthermore, the gap between the first blade portion 21 and the second blade portion 22 is 0.2 mm to 1 mm, and the specific value can be 0.2 mm, 0.4 mm, 0.8 mm, 1 mm or any value within the range, which can meet different processing requirements. In this embodiment, the opposite end faces of the first blade portion 21 and the second blade portion 22 are parallel and perpendicular to the axis of the handle 10, which is convenient for processing and installation, and also convenient for matching with the part to be processed of the product contour.

[0045] For further information, see Figure 4 and Figure 5 As shown, blades are formed on the outer side surfaces b1 and b2 of the first blade portion 21 and the second blade portion 22, and the opposite end surfaces a1 and a2 respectively; the front angle of the blade is -5° to 20°, the first back angle is 0° to 9°, the second back angle is 10° to 15°, the blade tooth width is 0.01mm to 0.1mm, and the blade tooth height is 0.1mm to 2mm.

[0046] Specifically, the front angle of the blade can be -5°, 0°, 5°, 10°, 20° or any value within the range, the first back angle can be 0°, 5°, 9° or any value within the range, the second back angle can be 10°, 12°, 15° or any value within the range, the blade tooth width can be 0.01mm, 0.05mm, 0.1mm or any value within the range, the blade tooth height can be 0.1mm, 0.15mm, 2mm or any value within the range. All of the above value ranges are convenient for processing and implementation, and can meet different processing requirements and ensure processing accuracy and efficiency.

[0047] Furthermore, the overall blade width (i.e., the thickness of the blade portions) of the first blade portion 21 and the second blade portion 22 is 0.5 mm to 2.5 mm. Figure 4 In the axial direction of the middle shank 10 , the height of the third base 103 is 0-5 mm greater than the height of the second blade portion 22 .

[0048] Specifically, the overall blade width can be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or any value within the range, and the height of the third substrate 103 can be 1mm, 2.5mm, 5mm or any value within the range, that is, the third substrate 103 is thickened, and the third substrate 103 can be strengthened to extend the service life of the tool while ensuring that the second blade portion 22 is securely installed.

[0049] Furthermore, the angle between the rake face of the first blade portion 21 and / or the second blade portion 22 and the corresponding rotation center line is a positive rake angle of 0 to 20°, see Figure 6 As shown, the cutting edge of the front cutting surface on the first cutting edge portion 21 and / or the second cutting edge portion 22 is point A, the rotation center is O, and the rotation center line is OX, then the angle ɑ between OA and OX is 0 to 20°, so that the line OA connecting the cutting edge of the front cutting surface and the rotation center is located on the lower side of the rotation center line OX. During the tool processing process, the positive rake angle is guaranteed to meet the processing requirements of the product.

[0050] Furthermore, the material used for the tool handle 10 includes tungsten steel, stainless steel or high-speed steel, which ensures the rigidity of the tool structure and reduces costs; the materials used for the blade portion, i.e., the first blade portion 21 and the second blade portion 22, include PCD (polycrystalline diamond) and CBN (cubic boron nitride), which can improve the rigidity and strength of the tool and enable reliable finishing of the product.

[0051] In this embodiment, the handle 10 and the blade can be welded together by vacuum brazing or other methods to obtain the overall structure of the tool. The method is simple, reliable and easy to implement. The first substrate 101, the second substrate 102 and the third substrate 103 can be an integral structure, and are processed separately to obtain corresponding contours and sizes. The structure is simple and easy to process; they can also be multi-section structures with different contours and sizes, and the opposite end faces are welded in sequence to form an integral structure, and the desired structure of the handle 10 can be obtained.

[0052] The utility model provides an integrated contour knife, which can realize the simultaneous processing of multiple parts of the target product for fine processing, without the need for multiple tool changing procedures. One-time processing can reduce the relative error, greatly improve the processing accuracy, and thus obtain high processing quality. At the same time, it can save a lot of manpower and material resources and achieve greater economic benefits.

[0053] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A contour forming knife, characterized in that: include: Handle; A cutter head, arranged at the end of the handle; The cutter head comprises a plurality of blade portions, which are used to process different parts of the product contour at the same time; the cutter head comprises a first blade portion and a second blade portion, the first blade portion and the second blade portion are arranged opposite to each other along the axial direction of the handle, and a processing gap is formed between the first blade portion and the second blade portion; The knife handle comprises a first base, a second base and a third base arranged in sequence along the axial direction, the first base is provided with the first blade portion, and the third base is provided with the second blade portion; the knife handle is provided with blade grooves for mounting the first blade portion and the second blade portion, respectively.

2. The contour forming knife according to claim 1, characterized in that: The cross-sectional area of ​​the second matrix perpendicular to the axis of the shank is smaller than that of the first matrix and the third matrix.

3. The contour forming knife according to claim 1, characterized in that: The blade grooves are arranged in 1 to 8 groups along the circumference of the shank.

4. The contour forming knife according to claim 1, characterized in that: Blades are formed on the side surfaces and opposite end surfaces of the first blade portion and the second blade portion respectively; the front angle of the blade is -5° to 20°, the first back angle is 0° to 9°, the second back angle is 10° to 15°, the blade tooth width is 0.01mm to 0.1mm, and the blade tooth height is 0.1mm to 2mm; the overall blade width of the first blade portion and the second blade portion is 0.5mm to 2.5mm.

5. The contour forming knife according to claim 1, characterized in that: The first base diameter D1, the second base diameter D2, the third base diameter D3, D1 / D2=2.5~4.5, D1 / D3=1.5~3.5; the first blade length L1, the second blade length L2, D1 / L1=1.5~3.5, D3 / L2=2.5~4.5; the first blade length L11, the second blade length L22, L1 / L11=3.5~6.5, L2 / L22=1.5~3.

5.

6. The contour forming knife according to claim 1, characterized in that: An air avoidance groove is provided on the first substrate and located on one side of the first blade portion, and / or on the third substrate and located on one side of the second blade portion, and the angle between the bottom surface of the air avoidance groove and the corresponding end surface is 0 to 15 degrees.

7. The contour forming knife according to claim 1, characterized in that: The gap between the first blade portion and the second blade portion is 0.2 mm to 1 mm; the height of the third base is 0 to 5 mm greater than that of the second blade portion.

8. The contour forming knife according to claim 1, characterized in that: The angle between the rake face of the first blade portion and / or the second blade portion and the corresponding rotation center line is a positive rake angle of 0 to 20°.

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