Tool body and cutting tool having the same

Abstract

The utility model discloses a cutter body and cutting tool with it, be equipped with mounting groove on the cutter body, be suitable for installing blade in the mounting groove, the mounting groove has the bottom, the front side and left side, the left side has two first convex surfaces that protrude to the left side face right, two first convex surfaces arrange along the length direction of left side face, the front side has the second convex surface that protrude to the front side face back, the blade is installed in the mounting groove and is in butt joint with the bottom, two first convex surfaces and second convex surface. The cutter body has the advantages of strong balance, good stability, high processing quality, long service life etc.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a tool body and a cutting tool having the tool body. Background Technology

[0002] A cutting tool includes a tool body and a cutting insert. The tool body has a mounting groove, and the insert is installed in the mounting groove.

[0003] Cutting tools in related technologies are formed by pressing and sintering the inserts using powder metallurgy technology. This results in an uneven sintered surface, and some inserts, due to functional requirements, have a non-planar surface structure. When the inserts are installed in the mounting slot, the imbalance of forces on the contact surface between the insert and the slot can easily lead to insert loosening, affecting tool life and cutting quality. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a tool body that has the advantages of strong balance, good stability, high processing quality, and long service life.

[0005] This utility model also proposes a cutting tool having the aforementioned tool body.

[0006] To achieve the above objectives, a blade body is provided according to an embodiment of the first aspect of the present invention. The blade body has a mounting groove, which is suitable for mounting a blade. The mounting groove has a bottom surface, a front side surface, and a left side surface. The left side surface has two first convex surfaces protruding to the right from the left side surface. The two first convex surfaces are arranged along the length direction of the left side surface. The front side surface has a second convex surface protruding to the rear from the front side surface. When the blade is installed in the mounting groove, it abuts against the bottom surface, the two first convex surfaces, and the second convex surface.

[0007] The blade body according to the embodiments of this utility model has the advantages of strong balance, good stability, high processing quality, and long service life.

[0008] In addition, the blade body according to the above embodiments of this utility model may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the upper edge of each of the first convex surfaces is an arc convex to the right in a cross section parallel to the bottom surface, and each arc has a first vertex that convexes to the right the largest distance from the left side surface. When the blade is installed in the mounting groove, it fits against the two first vertices.

[0010] According to one embodiment of the present invention, the distance between the two first vertices in the front-back direction is less than the length of the blade in the front-back direction and greater than half the length of the blade in the front-back direction.

[0011] According to one embodiment of the present invention, the upper edge of the second convex surface includes a first oblique line and a second oblique line, and the connection between the first oblique line and the second oblique line has a second vertex that protrudes rearward from the front side surface, and the blade fits against the second vertex when it is installed in the mounting groove.

[0012] According to one embodiment of the present invention, the angle between the first oblique line and the left side is less than 90 degrees, and the angle between the first oblique line and the second oblique line is greater than 90 degrees and less than 180 degrees.

[0013] According to one embodiment of the present invention, the second oblique line is connected to the right edge of the mounting groove, and the length of the first oblique line is greater than the length of the second oblique line.

[0014] According to one embodiment of the present invention, the length of the first oblique line is less than the width of the blade in the left-right direction and greater than half the width of the blade in the left-right direction.

[0015] According to one embodiment of the present invention, the angle between the left side surface and the bottom surface of the mounting groove is smaller than the angle between the left side surface and the lower surface of the blade, and the angle between the front side surface and the bottom surface of the mounting groove is smaller than the angle between the front side surface and the lower surface of the blade.

[0016] According to one embodiment of the present invention, a screw hole is provided on the bottom surface, and the blade is adapted to be installed in the mounting groove by means of a screw that fits in the screw hole.

[0017] According to a second aspect of the present invention, a cutting tool is provided, the cutting tool comprising a tool body as described in a first aspect of the present invention.

[0018] The cutting tool according to the embodiments of the present invention, by utilizing the tool body described in the first aspect of the present invention, has advantages such as strong balance, good stability, high machining quality, and long service life.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of a cutting tool according to an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the blade body according to an embodiment of the present utility model.

[0023] Figure 3 This is a schematic diagram of the blade body according to an embodiment of the present utility model.

[0024] Figure 4 This is a cross-sectional view of the blade and the cutting blade according to an embodiment of the present utility model.

[0025] Figure 5 This is a cross-sectional view of the blade and the cutting blade according to an embodiment of the present utility model.

[0026] Figure 6 This is a schematic diagram of the structure of a cutting tool according to an embodiment of the present utility model.

[0027] Figure 7 This is a cross-sectional view of a cutting tool according to an embodiment of the present utility model.

[0028] Figure 8 This is a schematic diagram of the blade according to an embodiment of the present utility model.

[0029] Figure 9 This is a schematic diagram of the blade according to an embodiment of the present utility model.

[0030] Reference numerals: cutting tool 1, tool body 10, mounting groove 100, bottom surface 110, screw hole 111, front side surface 120, second convex surface 121, first oblique line 122, second oblique line 123, second vertex 124, left side surface 130, first convex surface 131, first vertex 132, blade 20, through hole 21, screw 30. Detailed Implementation

[0031] This application is based on the findings and understanding of the following facts and issues:

[0032] Cutting tools in related technologies are formed by pressing and sintering the inserts using powder metallurgy technology. This results in an uneven sintered surface, and some inserts, due to functional requirements, have a non-planar surface structure. When the inserts are installed in the mounting slot, the imbalance of forces on the contact surface between the insert and the slot can easily lead to insert loosening, affecting tool life and cutting quality.

[0033] Specifically, in the related technology, the contact surface between the mounting groove and the cutting tool is a plane. When an uneven cutting tool is installed in the mounting groove, the unevenness of the cutting tool can easily cause the cutting tool to be unbalanced due to the protrusions or depressions on the cutting tool, resulting in the cutting tool becoming loose and affecting the cutting quality and tool life.

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The blade body 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0038] like Figures 1-9 As shown, the blade body 10 according to this embodiment of the utility model is provided with a mounting groove 100. The mounting groove 100 is suitable for mounting the blade 20. The blade 20 mounting groove has a bottom surface 110, a front side surface 120 and a left side surface 130 (the up-down, left-right and front-back directions are shown by arrows in the figure and are only for ease of description and are not a limitation on the actual setting direction). The left side surface 130 has two first convex surfaces 131 protruding to the right from the left side surface 130. The two first convex surfaces 131 are arranged along the length direction of the left side surface 130. The front side surface 120 has a second convex surface 121 protruding to the rear from the front side surface 120. When the blade 20 is installed in the mounting groove 100, it abuts against the bottom surface 110, the two first convex surfaces 131 and the second convex surface 121.

[0039] Specifically, the lower surface of the blade 20 abuts against the bottom surface 110, the left side of the blade 20 abuts against the two first convex surfaces 131, the front side of the blade 20 abuts against the second convex surface 121, and the other surfaces of the mounting groove 100 do not contact the blade 20.

[0040] According to the embodiment of the present invention, the blade body 10 is provided with two first convex surfaces 131 and a second convex surface 121. When the blade 20 is installed in the mounting groove 100, the lower surface of the blade 20 is in contact with the bottom surface 110, the left side of the blade 20 is in contact with the two first convex surfaces 131, and the front side of the blade 20 is in contact with the second convex surface 121. The blade 20 is supported by the bottom surface 110 in the vertical direction, by the two first convex surfaces 131 in the left and right directions, and by the second convex surface 121 in the front and back directions. This provides support for the blade 20 in the vertical, left and right, and front and back directions and restricts the displacement of the blade 20.

[0041] Furthermore, by providing two first convex surfaces 131 and a second convex surface 121, only the first convex surfaces 131 and the second convex surfaces 121 on the left and front sides of the mounting groove 100 contact the insert 20, while the remaining positions do not contact the insert 20. Through the contact between the convex surfaces and the insert 20, compared with cutting tools that have plane-to-plane contact in related technologies, the contact area between the mounting groove 100 and the insert 20 can be reduced. This can alleviate the uneven force on the insert 20 caused by the irregularity and unevenness of the insert 20 surface. Moreover, the two first convex surfaces 131 and the second convex surfaces 121 form a stable triangular force-bearing surface E in the horizontal direction, which further improves the force balance and stability of the insert 20, thereby improving the machining quality and extending its service life.

[0042] Therefore, the blade body 10 according to the present utility model embodiment has advantages such as strong balance, good stability, high processing quality, and long service life.

[0043] The blade body 10 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0044] In some specific embodiments of this utility model, such as Figures 1-9 As shown, the blade body 10 according to the present utility model embodiment is provided with a mounting groove 100, and the mounting groove 100 is suitable for mounting the blade 20. The blade 20 mounting groove has a bottom surface 110, a front side surface 120 and a left side surface 130.

[0045] Advantageously, such as Figure 2 and Figure 3As shown, the upper edge of each first convex surface 131 is a rightward convex arc in a cross-section parallel to the bottom surface 110. Each arc has a first vertex 132 that protrudes to the right from the left side surface 130 at the greatest distance. When the blade 20 is installed in the mounting groove 100, it fits against the two first vertices 132. Specifically, the first convex surface 131 is an arc surface. This allows the contact between the first convex surface 131 and the blade 20 in the horizontal direction to form a point-to-surface contact, while other areas do not contact each other. This further reduces the contact area between the mounting groove 100 and the blade 20, avoids the blade 20 from being uneven due to irregularity, and improves the balance and stability of the blade 20.

[0046] Furthermore, such as Figure 3 and Figure 8 As shown, the distance h between the two first vertices 132 in the front-back direction is less than the length H1 of the left side face of the blade 20 in the front-back direction but greater than half of the length H1 of the left side face of the blade in the front-back direction. Specifically, the center of the line connecting the two first convex surfaces 131 is adjacent to the center of the left side face of the blade 20. This allows the two first vertices 132 to be evenly arranged on the left side face of the blade 20, further improving the uniformity and balance of the force on the blade 20.

[0047] More advantageously, such as Figure 2 and Figure 3 As shown, the upper edge of the second convex surface 121 includes a first inclined line 122 and a second inclined line 123. The connection between the first inclined line 122 and the second inclined line 123 has a second vertex 124 that protrudes rearward from the front side surface 120. When the blade 20 is installed in the mounting groove 100, it fits against the second vertex 124. Specifically, the second convex surface 121 includes a first inclined surface and a second inclined surface. The upper edge of the first inclined surface forms the first inclined line 122, and the upper edge of the second inclined surface forms the second inclined line 123. This allows the contact between the second convex surface 121 and the blade 20 in the horizontal direction to form a point-to-surface contact, while other areas do not contact each other. This further reduces the contact area between the mounting groove 100 and the blade 20, avoids the blade 20 being irregularly uneven, and prevents the blade 20 from being subjected to unbalanced forces, thereby improving the balance and stability of the blade 20.

[0048] Therefore, it is easier to use the two first convex surfaces 131 and the second convex surface 121 to form a triangular force-bearing surface E with three support points in the horizontal direction, thereby further improving the balance and stability of the blade 20.

[0049] Furthermore, such as Figure 3As shown, the angle A between the first oblique line 122 and the left side surface 130 is less than 90 degrees, and the angle D between the first oblique line 122 and the second oblique line 123 is greater than 90 degrees and less than 180 degrees. This facilitates the second convex surface 121 protruding from the front side surface 120, reducing the contact area between the second convex surface 121 and the blade 20, thereby preventing unevenness of the blade 20 from affecting its balance.

[0050] Specifically, such as Figure 3 As shown, the second oblique line 123 is connected to the right edge of the mounting groove 100, and the length L1 of the first oblique line 122 is greater than the length L2 of the second oblique line 123. This allows the second vertex 124 to be relatively close to the right edge of the mounting groove 100, which facilitates the support of the blade 20 and further improves the balance of the blade 20.

[0051] Furthermore, such as Figure 3 and Figure 8 As shown, the length L1 of the first diagonal line 122 is less than the width H2 of the blade 20 in the left-right direction but greater than half of the width H2 of the blade 20 in the left-right direction. This allows the second vertex 124 to be supported in a reasonable position on the front side of the blade 20, which facilitates further improvement of the balance of the blade 20.

[0052] More specifically, such as Figure 4 and Figure 5 As shown, the angle B1 formed by the left side 130 and the bottom surface 110 of the mounting groove 100 is smaller than the angle B2 formed by the left side and the bottom surface of the blade 20, and the angle C1 formed by the front side 120 and the bottom surface 110 of the mounting groove 100 is smaller than the angle C2 formed by the front side and the bottom surface of the blade 20. Specifically, B1 and C1 are greater than or equal to 90 degrees. This further facilitates the support of the blade 20 by the first convex surface 131 and the second convex surface 121, preventing the blade 20 from contacting other areas on the mounting groove 100.

[0053] Furthermore, such as Figures 1-9 As shown, the bottom surface 110 is provided with screw holes 111, and the blade 20 is adapted to be installed in the mounting groove 100 by screws 30 that fit in the screw holes 111. This facilitates the installation of the blade 20.

[0054] Specifically, after screw 30 is tightened, it applies a downward force to blade 20, and the direction of the force is as follows: Figure 7 As indicated by arrow F1, the blade 20 is supported from below by the bottom surface 110 of the mounting groove 100. Simultaneously, the blade 20 is supported from the left and right sides by two first convex surfaces 131, and from the front and back by a second convex surface 121. The resultant force on the blade 20 is as follows: Figure 6As indicated by arrow F2, the force F1 applied by screw 30 toward the bottom surface 110 prevents the blade 20 from displacing vertically, and the resultant force applied by screw 30 toward the two first convex surfaces 131 and the second convex surface 121 prevents the blade 20 from displacing horizontally.

[0055] The cutting tool 1 according to an embodiment of the present invention is described below. The cutting tool 1 according to an embodiment of the present invention includes a tool body 10 according to the above embodiment of the present invention.

[0056] The cutting tool 1 according to the present invention has advantages such as strong balance, good stability, high machining quality and long service life by utilizing the tool body 10 according to the above embodiment of the present invention.

[0057] Other configurations and operations of the cutting tool 1 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A blade body, characterized in that, The blade body is provided with a mounting groove, which is suitable for mounting the blade. The mounting groove has a bottom surface, a front side surface, and a left side surface. The left side surface has two first convex surfaces that protrude to the right from the left side surface. The two first convex surfaces are arranged along the length direction of the left side surface. The front side surface has a second convex surface that protrudes to the rear from the front side surface. When the blade is installed in the mounting groove, it abuts against the bottom surface, the two first convex surfaces, and the second convex surface.

2. The blade body according to claim 1, characterized in that, The upper edge of each of the first convex surfaces is a rightward convex arc in a cross section parallel to the bottom surface, and each arc has a first vertex that protrudes to the right from the left side surface at the greatest distance. When the blade is installed in the mounting slot, it fits against the two first vertices.

3. The blade body according to claim 2, characterized in that, The distance between the two first vertices in the front-back direction is less than the length of the left side of the blade in the front-back direction but greater than half the length of the left side of the blade in the front-back direction.

4. The blade body according to claim 1, characterized in that, The upper edge of the second convex surface includes a first oblique line and a second oblique line. The connection between the first oblique line and the second oblique line has a second vertex that protrudes rearward from the front side surface. When the blade is installed in the mounting groove, it fits against the second vertex.

5. The blade body according to claim 4, characterized in that, The angle between the first diagonal line and the left side is less than 90 degrees, and the angle between the first diagonal line and the second diagonal line is greater than 90 degrees and less than 180 degrees.

6. The blade body according to claim 4, characterized in that, The second oblique line is connected to the right edge of the mounting groove, and the length of the first oblique line is greater than the length of the second oblique line.

7. The blade body according to claim 4, characterized in that, The length of the first diagonal line is less than the width of the blade in the left-right direction and greater than half the width of the blade in the left-right direction.

8. The blade body according to claim 1, characterized in that, The angle between the left side and the bottom surface of the mounting groove is smaller than the angle between the left side and the bottom surface of the blade, and the angle between the front side and the bottom surface of the mounting groove is smaller than the angle between the front side and the bottom surface of the blade.

9. The blade body according to claim 1, characterized in that, The bottom surface is provided with screw holes, and the blade is adapted to be installed in the mounting groove by means of screws that fit in the screw holes.

10. A cutting tool, characterized in that, Includes the blade body according to any one of claims 1-9.

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