Milling inserts and milling cutter heads containing them

Abstract

The present invention provides a milling blade and a milling cutter disc having the same, wherein the milling blade comprises: a base body, the base body having a first end face, a second end face and a side face between the first end face and the second end face, the first end face being provided with a clamping groove, the clamping groove being used to cooperate with a mounting member to fix the base body; a plurality of cutter heads, the plurality of cutter heads being symmetrically arranged on the side face of the base body with respect to the rotation axis center of the base body. The technical solution provided by the present application can solve the problems of low strength and easy damage in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, in particular to a milling blade and a milling cutter disc having the same. Background Art

[0002] At present, a milling cutter is a rotary tool with one or more milling blades, which cuts off the workpiece's excess in sequence and intermittently through each milling blade, and is mainly used on a milling machine to process planes, steps, grooves, forming surfaces, and cut off workpieces. In order to reuse the cutter body of the milling cutter disc, the existing milling cutter discs mostly use a combined structure of milling blades and a milling cutter disc.

[0003] The existing milling blade is provided with multiple cutter heads, and the milling blade can be rotated by a fixing piece in the installation hole as a rotating shaft by providing a mounting through hole on the milling blade, so as to meet different process requirements. However, the existing milling blade has low strength, is easy to be damaged, and has a short service life. Summary of the invention

[0004] The invention provides a milling cutter blade and a milling cutter disc having the same, so as to solve the problems of low strength and easy damage in the prior art.

[0005] According to one aspect of the present invention, a milling blade is provided, which includes: a base body, the base body having a first end face, a second end face and a side face located between the first end face and the second end face, the first end face being provided with a clamping groove, the clamping groove being used to cooperate with the mounting member to fix the base body; a plurality of cutter heads, the plurality of cutter heads being symmetrically arranged on the side faces of the base body with respect to the center of the rotation axis of the base body.

[0006] Furthermore, the first end surface is also provided with a limiting groove, which is arranged in the pressing groove, and the limiting groove divides the pressing groove into a plurality of symmetrically arranged pressing surfaces.

[0007] Furthermore, the pressing surface includes a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface are symmetrically arranged with the limiting groove as the center, and the first pressing surface and the second pressing surface are both curved surfaces.

[0008] Furthermore, the pressing surface includes a third pressing surface, a fourth pressing surface, a fifth pressing surface and a sixth pressing surface, the third pressing surface and the fourth pressing surface are located on one side of the limiting groove, and the fifth pressing surface and the sixth pressing surface are located on the other side of the limiting groove.

[0009] Furthermore, the milling blade includes two cutter heads, and two mounting grooves are arranged on the side, and the two cutter heads are arranged in a one-to-one correspondence with the two mounting grooves.

[0010] Furthermore, the side surface includes a first folded surface and a second folded surface arranged in sequence along the thickness direction of the base, and there is an angle between the first folded surface and the second folded surface. In the projection of the first end surface toward the second end surface, the connection between the first folded surface and the second folded surface protrudes from the boundary of the first end surface, and the installation groove is located at the connection.

[0011] Furthermore, in the projection of the first end surface toward the second end surface, the cutter head protrudes from the first folded surface, and a chip breaking structure is formed between the cutter head and the first folded surface.

[0012] Furthermore, the angle between the center line of the limiting groove and the center line of the base along the length direction is between 0° and 30°.

[0013] Furthermore, the pressing surface is a spherical surface, and the diameter of the spherical surface ranges from 5 to 20 mm.

[0014] Furthermore, the side includes two first side surfaces and two second side surfaces, the two first side surfaces are arranged correspondingly, and the two second side surfaces are arranged correspondingly, each cutting head includes a first cutting segment and a second cutting segment connected to each other, the first cutting segment is located on the first side surface of the base, and the second cutting segment is located on the second side surface of the base, and a positioning structure is also arranged on the second side surface near the second cutting segment, and the positioning structure is used for cooperating with the fastener for positioning.

[0015] Furthermore, the second end surface is a curved surface.

[0016] According to another aspect of the present invention, a milling cutter disc is provided, and the milling cutter disc comprises the above-mentioned milling blade.

[0017] Furthermore, the second end face of the milling blade is a curved surface, the milling cutter disc has a mounting groove, the milling blade is arranged in the mounting groove, and the side wall of the mounting groove corresponding to the second end face is a curved surface so that the side wall of the mounting groove fits the second end face.

[0018] Furthermore, the milling cutter disc has a plurality of mounting positions and a plurality of milling blades, and the plurality of milling blades are arranged in a one-to-one correspondence with the plurality of mounting positions.

[0019] Furthermore, the milling cutter disc comprises a main body, a plurality of mounting positions are arranged in an annular shape on the main body, the main body comprises a plurality of sector blocks, and the milling heights of at least two of the plurality of sector blocks are different.

[0020] The technical solution of the present invention is applied, and the milling blade includes a base and a cutter head, wherein a clamping groove is provided on the first end surface of the base, and the base is fixed by the mounting member in cooperation with the clamping groove during installation. In this structure, the clamping groove occupies a smaller volume of the base than the existing mounting through hole, so that the strength of the base can be increased while satisfying the need to fix the base, making the base less susceptible to damage and extending the service life of the milling blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A three-dimensional schematic diagram of a milling insert provided in an embodiment of the present invention is shown;

[0023] Figure 2 Shows Figure 1 Front view of the center milling insert;

[0024] Figure 3 Shows Figure 1 Top view of the center milling insert;

[0025] Figure 4 Shows Figure 3 Sectional view at AA in the middle;

[0026] Figure 5 A top view of a milling insert provided by another embodiment of the present invention is shown;

[0027] Figure 6 Shows Figure 5 Cross-sectional view of the milling insert;

[0028] Figure 7 A schematic diagram of the assembly of the milling insert is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Base; 11. First end face; 12. Second end face; 13. Side face; 13a. First folding face; 13b. Second folding face; 13c. Positioning structure; 20. Pressing groove; 30. Cutting head; 40. Limiting groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 4As shown, an embodiment of the present invention provides a milling blade, which includes: a base 10 and a cutter head 30. The base 10 has a first end face 11, a second end face 12 and a side face 13 between the first end face 11 and the second end face 12, and a clamping groove 20 is arranged on the first end face 11, and the clamping groove 20 is used to cooperate with the mounting member to fix the base 10. The milling blade includes a plurality of cutter heads 30, and the plurality of cutter heads 30 are arranged on the side of the base 10 symmetrically with the rotation axis of the base 10. When the milling blade is clamped, the mounting member is used to clamp with the clamping groove 20 to fix the position of the milling blade. When the cutter head needs to be replaced, it is only necessary to remove the mounting member and rotate the base 10, and then the mounting member and the clamping groove 20 are clamped. The second end face 12 can be a plane or a curved surface. In order to improve the stability of the fixation of the milling blade and increase the contact area between the milling blade and the milling cutter disc, the second end face 12 is set as a curved surface.

[0033] The milling blade provided by the present embodiment includes a base 10 and a cutter head 30, wherein a clamping groove 20 is provided on the first end face 11 of the base 10, and the base 10 is fixed by the mounting member in cooperation with the clamping groove 20 during installation. In this structure, the clamping groove 20 occupies a smaller volume of the base 10 than the existing mounting through hole, so the strength of the base 10 can be increased while satisfying the requirement of fixing the base 10, so that the base 10 is not easily damaged or broken, and the service life of the milling blade is extended. In addition, through the clamping groove 20, the clamping force can be applied to the groove and decomposed into forces in two directions, the clamping force and the directional force, so that the directional performance of the milling blade can be better, and there will be no problem of axial runout between the mounting through hole and the fastener in the prior art. The milling blade is fixed by the clamping groove 20, which is convenient for adjusting the blade and improving the flexibility of blade installation.

[0034] Specifically, a limiting groove 40 is further provided on the first end surface 11, and the limiting groove 40 is provided in the clamping groove 20, and the limiting groove 40 divides the clamping groove 20 into a plurality of symmetrically arranged clamping surfaces. By providing the limiting groove 40 in the clamping groove 20, the limiting groove 40 can cooperate with the mounting member to limit the position, increase the friction between the mounting member and the limiting groove 40, and prevent the milling cutter from flying out during the processing.

[0035] Among them, the clamping surface includes a first clamping surface and a second clamping surface, and the first clamping surface and the second clamping surface are symmetrically arranged with the limiting groove 40 as the center, and the first clamping surface and the second clamping surface are both curved surfaces. Specifically, the first clamping surface and the second clamping surface can be convex or concave. By setting the clamping surface as a curved surface, the matching area between the clamping surface and the mounting part can be increased, and the force direction of the mounting part can be increased. When the clamping surface is a curved surface, the mounting part can be fitted with the curved surface annularly, so that the mounting part is subjected to circumferential force, thereby making the locking force greater, and the milling blade can be well fixed on the milling cutter disc. In addition, the above-mentioned structure can make the mounting part subjected to circumferential force, so that the mounting part will not be easily broken due to unidirectional force. Through this structure, the concentrated stress of the mounting part can be dispersed, thereby extending the service life of the mounting part.

[0036] In this embodiment, the milling blade includes two cutter heads 30, and the side 13 is provided with two mounting grooves, and the two cutter heads 30 are arranged one-to-one with the two mounting grooves. Specifically, the cutter heads 30 are made of diamond material, and the cutter heads 30 are correspondingly embedded in the mounting grooves so that the processing technology is performed by the cutter heads 30.

[0037] The side surface 13 includes a first folding surface 13a and a second folding surface 13b which are sequentially arranged along the thickness direction of the base body 10, and an angle is formed between the first folding surface 13a and the second folding surface 13b. On the projection of the first end surface 11 toward the second end surface 12, the connection between the first folding surface 13a and the second folding surface 13b protrudes from the boundary of the first end surface 11, and the mounting groove is located at the connection, that is, the tool head 30 is installed at the connection between the first folding surface 13a and the second folding surface 13b.

[0038] Specifically, on the projection of the first end face 11 toward the second end face 12, the cutter head 30 protrudes from the first folded surface 13a, and a chip breaking structure is formed between the cutter head 30 and the first folded surface 13a. In this way, the chip breaking structure can cut off the machining chips during the machining of the workpiece, so as to prevent the machining chips from continuing to be connected to the workpiece, and facilitate further machining.

[0039] The limiting groove 40 can be arranged parallel to the center line of the substrate 10 along the length direction, or can have an angle with the horizontal line. Specifically, the angle between the limiting groove 40 and the center line of the substrate 10 along the length direction can be set between 0° and 30°.

[0040] In this embodiment, the pressing surface is a spherical surface, and the diameter of the spherical surface ranges from 5 to 20 mm. The spherical surface diameter range is limited to this range so that it can fit tightly with the mounting part while ensuring the strength of the base 10. Preferably, the spherical surface diameter is set to 12 mm.

[0041] like Figure 1 and Figure 7As shown, the side surface 13 includes two first side surfaces and two second side surfaces, the two first side surfaces are arranged correspondingly, the two second side surfaces are arranged correspondingly, each cutter head 30 includes a first cutter segment and a second cutter segment connected to each other, the first cutter segment is located on the first side surface of the base 10, the second cutter segment is located on the second side surface of the base, and a positioning structure 13c is also arranged on the second side surface near the second cutter segment, and the positioning structure 13c is used to cooperate with the fastener for positioning. The positioning structure 13c can improve the stability of the milling cutter when it is fixed by setting the positioning structure 13c.

[0042] like Figure 5 and Figure 6 As shown, the present invention provides another embodiment, in which the only difference from the above embodiment is the clamping groove 20 and the limiting groove 40. Specifically, the clamping surface in the clamping groove 20 includes a third clamping surface, a fourth clamping surface, a fifth clamping surface and a sixth clamping surface, the third clamping surface and the fourth clamping surface are located on one side of the limiting groove 40, and the fifth clamping surface and the sixth clamping surface are located on the other side of the limiting groove 40. Among them, there is an arc transition between the third clamping surface and the fourth clamping surface, and there is an arc transition between the fifth clamping surface and the sixth clamping surface. The third clamping surface and the fourth clamping surface cooperate with each other to clamp the mounting part, and the fifth clamping surface and the sixth clamping surface cooperate with each other to clamp the mounting part. The above structure can further improve the clamping effect, so that the milling blade is stabilized on the milling cutter disc. Among them, the above clamping surfaces are also spherical, and the spherical diameters are all between 5 and 20 mm.

[0043] In this embodiment, there is an angle between the center line of the limiting groove 40 and the center line of the base 10 along the length direction, that is, Figure 5 The angle α, α shown is 20°.

[0044] Yet another embodiment of the present invention provides a milling cutter disc, which includes the milling blade provided by the above embodiment.

[0045] Specifically, the second end face 12 of the milling blade is a curved surface, the milling cutter disc has a mounting groove, the milling blade is arranged in the mounting groove of the milling cutter disc, and the side wall of the mounting groove corresponding to the second end face 12 is a curved surface, so that the side wall of the mounting groove fits the second end face 12. Among them, the second end face 12 is a concave surface, and the side wall of the mounting groove is set to a convex surface.

[0046] The milling cutter disc has a plurality of mounting positions and a plurality of milling blades, and the plurality of milling blades are arranged in one-to-one correspondence with the plurality of mounting positions.

[0047] The milling cutter disc includes a main body, and multiple mounting positions are arranged in a ring on the main body. The main body includes multiple sector blocks, and the mounting positions are arranged on the sector blocks. The milling heights of at least two of the multiple sector blocks are different, so that different types of workpiece surfaces can be milled.

[0048] Through the structure provided in this embodiment, the clamping groove 20 occupies a smaller volume of the base 10 than the existing mounting through hole, so that the strength of the base 10 can be increased while fixing the base 10, making the base 10 less likely to be damaged or broken, thereby extending the service life of the milling cutter.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A milling insert, characterized in that: The milling blade comprises: A base (10), the base (10) having a first end face (11), a second end face (12) and a side face (13) located between the first end face (11) and the second end face (12), the first end face (11) being provided with a clamping groove (20), the clamping groove (20) being used to cooperate with a mounting member to fix the base (10); A plurality of cutter heads (30), wherein the plurality of cutter heads (30) are symmetrically arranged on the side surface of the base body (10) about the rotation axis of the base body (10); The milling blade comprises two cutter heads (30), the side surface (13) is provided with two mounting grooves, and the two cutter heads (30) are arranged in one-to-one correspondence with the two mounting grooves; The side surface (13) comprises two first side surfaces and two second side surfaces, the two first side surfaces are arranged correspondingly, and the two second side surfaces are arranged correspondingly, each of the cutter heads (30) comprises a first cutter segment and a second cutter segment connected to each other, the first cutter segment is located on the first side surface of the base, and the second cutter segment is located on the second side surface of the base, and a positioning structure (13c) is further arranged on the second side surface near the second cutter segment, and the positioning structure (13c) is used for cooperating with a fastener for positioning; The first end surface (11) is further provided with a limiting groove (40), wherein the limiting groove (40) is arranged in the pressing groove (20), and the limiting groove (40) divides the pressing groove (20) into a plurality of symmetrically arranged pressing surfaces; The pressing surface comprises a first pressing surface and a second pressing surface, the first pressing surface and the second pressing surface are symmetrically arranged with the limiting groove (40) as the center, and the first pressing surface and the second pressing surface are both curved surfaces; The included angle between the center line of the limiting groove (40) and the center line of the base body (10) along the length direction is between 0° and 30°.

2. The milling insert according to claim 1, characterized in that: The pressing surface comprises a third pressing surface, a fourth pressing surface, a fifth pressing surface and a sixth pressing surface, wherein the third pressing surface and the fourth pressing surface are located on one side of the limiting groove (40), and the fifth pressing surface and the sixth pressing surface are located on the other side of the limiting groove (40).

3. The milling insert according to claim 1, characterized in that: The side surface (13) comprises a first folded surface (13a) and a second folded surface (13b) which are arranged in sequence along the thickness direction of the base (10); an angle is formed between the first folded surface (13a) and the second folded surface (13b); in a projection of the first end surface (11) toward the second end surface (12), a connection between the first folded surface (13a) and the second folded surface (13b) protrudes from a boundary of the first end surface (11); and the mounting groove is located at the connection.

4. The milling insert according to claim 3, characterized in that: On the projection of the first end surface (11) toward the second end surface (12), the tool head (30) protrudes from the first folded surface (13a), and a chip breaking structure is formed between the tool head (30) and the first folded surface (13a).

5. The milling insert according to claim 1, characterized in that: The pressing surface is a spherical surface, and the diameter of the spherical surface ranges from 5 to 20 mm.

6. The milling insert according to claim 1, characterized in that: The second end surface (12) is a curved surface.

7. A milling cutter disc, characterized in that: The milling cutter disc comprises the milling insert according to any one of claims 1 to 6.

8. The milling cutter disc according to claim 7, characterized in that The second end face (12) of the milling blade is a curved surface, the milling cutter disc has a mounting groove, the milling blade is arranged in the mounting groove, and the side wall of the mounting groove corresponding to the second end face (12) is a curved surface, so that the side wall of the mounting groove fits the second end face (12).

9. The milling cutter disc according to claim 7, characterized in that The milling cutter disc has a plurality of mounting positions and a plurality of milling blades, and the plurality of milling blades are arranged in a one-to-one correspondence with the plurality of mounting positions.

10. The milling cutter disc according to claim 9, characterized in that The milling cutter disc comprises a body, a plurality of the mounting positions are arranged in an annular manner on the body, the body comprises a plurality of sector blocks, and at least two of the plurality of sector blocks have different milling heights.

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