Cutting tool

Abstract

This utility model discloses a cutting tool, comprising: a tool body with a clamping opening and multiple clamping surfaces within the clamping opening; and a cutting blade clamped at the clamping opening, the cutting blade having clamping mating surfaces corresponding one-to-one with the multiple clamping surfaces, one of the clamping surfaces being a clamping convex surface and the other a clamping concave surface, and the cutting blade having a cutting portion extending beyond the clamping opening; wherein the clamping opening is constructed to extend upwards along the feed direction, and the cutting blade is clamped upwards along the feed direction within the clamping opening. The cutting tool of this utility model, with multiple clamping convex surfaces and multiple clamping concave surfaces corresponding one-to-one, improves the installation reliability of the cutting blade and the clamping opening. Furthermore, the upward-sloping installation of the cutting blade within the clamping opening further enhances the installation reliability of the cutting blade within the clamping opening, and also improves the stability and reliability of the cutting blade during machining, thereby improving machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool structure technology, and in particular to a cutting tool. Background Technology

[0002] In the cutting of some sheet-like and ring-shaped parts, due to the limitation of large workpiece diameter, large overhang cutting blades are generally used in conjunction with single-edged inserts. During the machining process, because these tools are thin-bladed, the tool strength is limited and the clamping capacity is limited, resulting in overall tool instability. The surface quality of the workpiece and the tool life are both affected, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a cutting tool with a reliable and stable connection between the blade and the tool body, which can improve the working stability and machining accuracy of the blade. Moreover, the installation process is simpler and more convenient, and the blade can be installed on the tool body with its infeed direction tilted upwards, which can improve the installation reliability of the blade and improve the stability and reliability of the blade during the machining process, thereby improving the machining accuracy.

[0004] A cutting tool according to an embodiment of the present invention includes: a blade body having a clamping opening and a plurality of clamping surfaces formed therein; a blade clamped at the clamping opening, the blade having clamping mating surfaces corresponding one-to-one with the plurality of clamping surfaces, one of the clamping surfaces and the corresponding clamping mating surfaces having a clamping convex surface and the other having a clamping concave surface, the blade having a cutting portion extending outside the clamping opening; wherein the clamping opening is configured to extend obliquely upward along the feed direction, and the blade is clamped obliquely upward along the feed direction within the clamping opening.

[0005] According to the present invention, the cutting tool is provided with multiple clamping convex surfaces and multiple clamping concave surfaces that are correspondingly clamped together, which can improve the installation reliability of the blade and the clamping port, and increase the clamping area of ​​the blade and the clamping port, effectively improving the installation firmness of the blade in the clamping port, thereby improving the working stability and machining accuracy of the blade. Moreover, the installation process is simpler and more convenient. Furthermore, by setting the clamping port to extend upward along the feed direction, the blade can be tilted upward along the feed direction, which can improve the installation reliability of the blade in the clamping port, and improve the stability and reliability of the blade during the machining process, thereby improving the machining accuracy.

[0006] According to some embodiments of the present invention, the cutting tool has a plurality of clamping surfaces, namely a top clamping surface, a bottom clamping surface, and an end clamping surface, and a plurality of clamping mating surfaces, namely a top mating surface, a bottom mating surface, and an end mating surface. The top clamping surface is clamped to the top mating surface, the bottom clamping surface is clamped to the bottom mating surface, and the end clamping surface is clamped to the end mating surface. Both the top clamping surface and the bottom clamping surface are configured to extend upwardly at an angle along the feed direction.

[0007] According to some embodiments of the present invention, the cutting tool has an angle of θ1 between the top clamping surface and the feed direction, and satisfies: 6°≤θ1≤15°;

[0008] And / or, the angle between the bottom clamping surface and the feed direction is θ2, and satisfies: 6°≤θ2≤15°.

[0009] According to some embodiments of the present invention, the cutting tool has an end clamping surface comprising an upper clamping area and a lower clamping area, wherein the upper clamping area and the lower clamping area form an angle.

[0010] The end mating surface includes an upper mating area and a lower mating area, with an included angle between the upper mating area and the lower mating area. The upper clamping area clamps the upper mating area, and the lower clamping area clamps the lower mating area.

[0011] According to some embodiments of the present invention, the included angle between the upper mating area and the lower mating area of ​​the cutting tool is β, and satisfies: 90°<β<180°.

[0012] According to some embodiments of the present invention, the angle between the upper clamping area and the lower clamping area of ​​the cutting tool is λ, and satisfies: 0°≤λ-β≤4°.

[0013] According to some embodiments of the present invention, the cutting tool has a cutting end face located below the cutting part at the front end of the blade, and the cutting end face is parallel to the lower mating area.

[0014] According to some embodiments of the present invention, the cutting tool body is further provided with a deformation notch located on the rear side of the clamping opening along the feed direction.

[0015] According to some embodiments of the present invention, each of the clamping concave surfaces includes two clamping sub-concave surfaces forming an angle, the two clamping sub-concave surfaces intersect and form a concave intersection line, and each of the clamping convex surfaces includes two clamping sub-convex surfaces forming an angle, the two clamping sub-convex surfaces intersect and form a convex intersection line, and the two clamping sub-concave surfaces and the two clamping sub-convex surfaces are correspondingly and closely fitted.

[0016] According to some embodiments of the present invention, the cutting tool has multiple concave surfaces whose concave intersection lines are located in the same plane, and / or multiple convex surfaces whose convex intersection lines are located in the same plane.

[0017] And / or, the included angle between the two concave surfaces of the clamping sub is α, and the included angle between the two convex surfaces of the clamping sub is δ, and satisfies: 0°≤δ-α≤4°.

[0018] Additional aspects and advantages of this invention will be set forth in the description which follows, and will become apparent from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the cutting tool according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the blade structure of a cutting tool according to an embodiment of the present invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the blade structure of a cutting tool according to an embodiment of the present invention. Figure 2 ;

[0023] Figure 4 This is a side view of the blade of a cutting tool according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 Cross-sectional view at point AA;

[0025] Figure 6 yes Figure 4 Cross-sectional view at point BB;

[0026] Figure 7 This is a partial schematic diagram of the blade body of the cutting tool according to an embodiment of the present utility model;

[0027] Figure 8This is a side view of the blade body of the cutting tool according to an embodiment of the present utility model;

[0028] Figure 9 yes Figure 8 Cross-sectional view at point C;

[0029] Figure 10 yes Figure 8 Cross-sectional view at point DD;

[0030] Figure 11 yes Figure 8 Enlarged view of point E in the middle.

[0031] Figure label:

[0032] Cutting tool 100,

[0033] The blade body 1 includes a clamping opening 11, a clamping surface 111, a top clamping surface 112, a bottom clamping surface 113, an end clamping surface 114, an upper clamping area 1141, a lower clamping area 1142, a clamping convex surface 115, a clamping sub-convex surface 1151, a convex surface intersection line 1152, and a deformation notch 12.

[0034] Insert 2, clamping mating surface 21, top mating surface 211, bottom mating surface 212, end mating surface 213, upper mating area 2131, lower mating area 2132, clamping concave surface 214, clamping sub-concave surface 2141, concave surface intersection line 2142, infeed end face 22, cutting part 23, flank face 24, chip breaker groove 25. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The following is for reference. Figures 1-11 According to the present invention, the cutting tool 100 has a reliable and stable connection between the blade 2 and the tool body 1, which can improve the working stability and machining accuracy of the blade 2. The installation process is simpler and more convenient. The blade 2 can be installed on the tool body 1 with the blade 2 tilted upward along the feed direction, which can improve the installation reliability of the blade 2 and improve the stability and reliability of the blade 2 during the machining process, thereby improving the machining accuracy.

[0039] like Figures 1-11 As shown, a cutting tool 100 according to an embodiment of the present invention includes: a blade body 1 and a blade 2.

[0040] Among them, the cutting tool 100 of this application is a large overhang cutting tool 100 with stable clamping capability, that is, it can realize the large overhang machining, and the tool body 1 can form a stable clamping of the blade 2, so that the cutting tool 100 has a long service life and improves the surface quality of the workpiece.

[0041] The blade body 1 has a clamping opening 11, and multiple clamping surfaces 111 are formed inside the clamping opening 11; the blade 2 is clamped at the clamping opening 11, and the blade 2 has clamping mating surfaces 21 that correspond one-to-one with the multiple clamping surfaces 111.

[0042] Specifically, the blade body 1 is the main structure of the cutting tool 100, used to connect the cutting tool 100 to the processing equipment and to fix the cutting tool 100. The blade body 1 can be constructed as a plate, and includes a shank and a clamping head, with the clamping head located at the end of the blade body 1, such as... Figure 1 and Figure 8 As shown, the blade body 1 can have a clamping opening 11 at the clamping head, and a clamping space is formed within the clamping opening 11 for clamping the blade 2. Multiple clamping surfaces 111 are formed within the clamping opening 11, each having a clamping function. The blade 2 is located within the clamping opening 11 and is clamped by the multiple clamping surfaces 111, allowing the blade 2 to be clamped at the clamping opening 11. The multiple clamping surfaces 111 improve the clamping reliability of the blade 2. Furthermore, a clamping opening 11 can be provided at each end of the blade body 1, allowing the blade 2 to be clamped within one of the clamping openings 11. If one clamping opening 11 is damaged, the blade 2 can be clamped within the other clamping opening 11, allowing the cutting tool 100 to continue to be used. This reduces the replacement frequency of the cutting tool 100 and increases its service life.

[0043] The clamping opening 11 can be processed by removing material, that is, by machining part of the structure of the blade body 1, a clamping opening 11 with multiple clamping surfaces 111 can be processed, and the shape of the clamping opening 11 needs to be matched with the shape of the blade 2, so that the blade 2 and the clamping opening 11 fit more tightly and improve the clamping firmness of the clamping opening 11 on the blade 2.

[0044] Furthermore, the blade 2 has multiple clamping mating surfaces 21, which are distributed one-to-one with multiple clamping surfaces 111, facilitating clamping between the multiple clamping mating surfaces 21 and multiple clamping surfaces 111. The blade 2 can be clamped in the clamping opening 11. The number of clamping surfaces 111 and clamping mating surfaces 21 is the same, that is, both clamping surfaces 111 and clamping mating surfaces 21 can be set to two, three, four, etc.

[0045] Furthermore, one of the clamping surface 111 and the corresponding clamping mating surface 21 is configured as a clamping convex surface 115 and the other is configured as a clamping concave surface 214. That is to say, the clamping surface 111 can be configured as a clamping convex surface 115 and the clamping mating surface 21 can be configured as a clamping concave surface 214, or the clamping surface 111 can be configured as a clamping concave surface 214 and the clamping mating surface 21 can be configured as a clamping convex surface 115. Through the above two configuration methods, the clamping convex surface 115 and the clamping concave surface 214 can be clamped together. The configuration method is not limited and can be flexibly selected.

[0046] The blade 2 has a cutting portion 23 extending beyond the clamping opening 11. The cutting portion 23 is used to machine the workpiece, and as... Figure 2As shown, a chip-breaking groove 25 is formed on the rear side of the cutting part 23 to accommodate chips cut during the machining process. During installation, the cutting part 23 of the insert 2 is positioned facing outwards from the clamping opening 11, allowing the cutting part 23 to be close to the workpiece to be machined, facilitating machining of the workpiece by the cutting part 23. At least a portion of the cutting part 23 can be configured to be parallel to the feed direction, facilitating perpendicular contact between the cutting part 23 and the workpiece, thereby enabling the cutting part 23 to machine the workpiece.

[0047] In this embodiment, the clamping surface 111 is configured as a clamping convex surface 115, and the clamping mating surface 21 is configured as a clamping concave surface 214. Thus, during actual installation, the side of the blade 2 away from the cutting part 23 is extended into the clamping opening 11, and at the same time, multiple clamping convex surfaces 115 can extend into multiple clamping concave surfaces 214 in a one-to-one correspondence, so that multiple clamping convex surfaces 115 and multiple clamping concave surfaces 214 can clamp and mate in a one-to-one correspondence, allowing the blade 2 to be clamped in the clamping opening 11 of the blade body 1.

[0048] Thus, by setting multiple clamping convex surfaces 115 and multiple clamping concave surfaces 214 to clamp and engage in a one-to-one correspondence, the installation accuracy and reliability of the blade 2 and the clamping port 11 can be improved. Furthermore, by having multiple clamping convex surfaces 115 extend into multiple clamping concave surfaces 214 to clamp and engage in a one-to-one correspondence, the clamping area between the blade 2 and the clamping port 11 can be increased, effectively improving the installation firmness of the blade 2 within the clamping port 11, thereby improving the working stability and machining accuracy of the blade 2. Moreover, the installation process is simpler and more convenient.

[0049] The clamping opening 11 is constructed to extend upward along the feed direction, and the cutting tool 2 is clamped in the clamping opening 11 in an upward tilt along the feed direction. In this way, by setting the clamping opening 11 to extend upward along the feed direction, the cutting tool 2 can be tilted upward along the feed direction, which can improve the stability and reliability of the cutting tool 2 in the machining process, thereby improving the machining accuracy.

[0050] During actual machining, the clamping opening 11 can be opened along the feed direction. It should be noted that the feed direction is parallel to the horizontal direction, meaning the cutting tool 100 can move horizontally towards the workpiece. Furthermore, the feed direction can also be from the inside to the outside of the clamping opening 11, as shown in the example below. Figure 4 As shown by the arrow, the clamping opening 11 extends upward at an angle along the feed direction. Correspondingly, the outer contour of the blade 2 is also constructed to extend upward at an angle along the feed direction, which facilitates the matching connection between the blade 2 and the clamping opening 11, and makes it easier for the blade 2 to be clamped in the clamping opening 11 at an upward angle along the feed direction.

[0051] In practical applications, the cutting tool 2 is subjected to the force of the workpiece while machining the workpiece. The force is in the opposite direction of the feed direction and tilted downwards. The cutting tool 2 is installed in the clamping port 11 with the feed direction tilted upwards. This can reduce the impact and damage of the force applied by the workpiece on the cutting tool 2, ensure the stability and machining accuracy of the cutting tool 2 in the long-term machining process, and extend the service life of the cutting tool 2.

[0052] The existing cutting tool 100 is thin and has low strength. Under large cutting depth, the cutting tool 100 is easily deformed by force, resulting in lateral and longitudinal displacement, which affects the machining accuracy of the blade 2 and thus the surface quality of the workpiece. In this embodiment, the cutting tool 100 has high installation reliability between the blade 2 and the clamping port 11, and the blade 2 is inclined upward along the feed direction, which can improve the stability and reliability of the blade 2 during the machining process, thereby improving the surface quality of the workpiece.

[0053] According to the cutting tool 100 of this utility model embodiment, multiple clamping convex surfaces 115 and multiple clamping concave surfaces 214 are provided to clamp and cooperate in a one-to-one correspondence, which can improve the installation reliability of the blade 2 and the clamping port 11, and increase the clamping area of ​​the blade 2 and the clamping port 11, effectively improving the installation firmness of the blade 2 in the clamping port 11, thereby improving the working stability and machining accuracy of the blade 2, and the installation process is simpler and more convenient. Furthermore, setting the clamping port 11 to extend upward along the feed direction can make the blade 2 tilt upward along the feed direction, which can improve the installation reliability of the blade 2 in the clamping port 11, and improve the stability and reliability of the blade 2 during the machining process, thereby improving the machining accuracy.

[0054] In some embodiments, the plurality of clamping surfaces 111 are a top clamping surface 112, a bottom clamping surface 113, and an end clamping surface 114, and the plurality of clamping mating surfaces 21 are a top mating surface 211, a bottom mating surface 212, and an end mating surface 213, wherein the top clamping surface 112 is clamped to the top mating surface 211, the bottom clamping surface 113 is clamped to the bottom mating surface 212, and the end clamping surface 114 is clamped to the end mating surface 213.

[0055] Specifically, there are three clamping surfaces 111, such as... Figure 7 As shown, the clamping surfaces are a top clamping surface 112, a bottom clamping surface 113, and an end clamping surface 114. The top clamping surface 112 is located at the top of the clamping opening 11, the bottom clamping surface 113 is located at the bottom of the clamping opening 11, and the end clamping surface 114 is located at the end of the clamping opening 11. That is, clamping surfaces 111 are provided at three positions within the clamping opening 11, and there are three clamping mating surfaces 21. Figure 2As shown, the top mating surface 211, bottom mating surface 212, and end mating surface 213 are respectively. The blade 2 includes a blade body. The top mating surface 211 is located at the top of the blade body, the bottom mating surface 212 is located at the bottom of the blade body, and the end mating surface 213 is located at the end of the blade body. The top mating surface 211 is distributed correspondingly to the top clamping surface 112, the bottom mating surface 212 is distributed correspondingly to the bottom clamping surface 113, and the end mating surface 213 is distributed correspondingly to the end clamping surface 114. In this way, by clamping the top clamping surface 112 to the top mating surface 211, the top of the blade 2 can be clamped to the top of the clamping opening 11. By clamping the bottom clamping surface 113 to the bottom mating surface 212, the bottom of the blade 2 can be clamped to the bottom of the clamping opening 11. By clamping the end clamping surface 114 to the end mating surface 213, the end of the blade 2 can be clamped to the end of the clamping opening 11.

[0056] In this way, by clamping the blade 2 with the clamping port 11 at three different positions, the clamping reliability of the blade 2 at the clamping port 11 can be improved.

[0057] The top clamping surface 112 and the bottom clamping surface 113 are both constructed to extend upwards at an angle along the feed direction. The top mating surface 211 of the insert 2 is clamped with the top clamping surface 112, and the bottom mating surface 212 of the insert 2 is clamped with the bottom clamping surface 113. In this way, the insert 2 can extend upwards at an angle along the feed direction within the clamping opening 11, which can improve the stability and reliability of the insert 2 machining process, thereby improving the machining accuracy.

[0058] Specifically, the structure of the clamping mating surface 21 on the blade 2 matches that of the clamping surface 111 in the clamping opening 11. That is, the top mating surface 211 and the bottom mating surface 212 are also constructed to extend upwards at an angle along the feed direction. This allows for a higher fit between the top mating surface 211 and the top clamping surface 112, and also a higher fit between the bottom mating surface 212 and the bottom clamping surface 113, thereby improving the clamping reliability of the top and bottom of the blade 2 in the clamping opening 11.

[0059] Furthermore, the top mating surface 211 and the bottom mating surface 212 extend along the front and rear directions of the blade 2, and the end mating surface 213 extends vertically along the blade 2 and penetrates the entire rear end of the blade 2. This can increase the contact area between the top mating surface 211 and the top clamping surface 112, increase the contact area between the bottom mating surface 212 and the bottom clamping surface 113, and increase the contact area between the end mating surface 213 and the end clamping surface 114, thereby improving the clamping reliability of the blade 2 in the clamping opening 11.

[0060] In some embodiments, the angle between the top clamping surface 112 and the feed direction is θ1, and satisfies: 6°≤θ1≤15°.

[0061] Specifically, such as Figure 8 As shown, the top clamping surface 112 is constructed to extend upwards at an angle along the feed direction, meaning the extension direction of the top clamping surface 112 forms an angle θ1 with the feed direction. θ1 can take values ​​of 6°, 8°, 10°, 12°, 13°, 15°, etc. By setting these values, the angle between the top clamping surface 112 and the feed direction can be between 6° and 15°. Furthermore, the top mating surface 211 of the insert 2 has the same inclination angle as the top clamping surface 112. Figure 4 As shown, the angle between the top mating surface 211 and the feed direction is between 6° and 15°. This allows for a higher degree of fit between the top mating surface 211 and the top clamping surface 112, and also allows the top of the insert 2 to form a certain angle upward along the feed direction. This makes the installation of the insert 2 more stable, which helps to enhance the resistance of the insert 2 to external forces during the machining process and improve the machining accuracy and service life of the insert 2.

[0062] In other embodiments, the angle between the bottom clamping surface 113 and the feed direction is θ2, and satisfies: 6°≤θ2≤15°.

[0063] Specifically, such as Figure 8 As shown, the bottom clamping surface 113 is constructed to extend upwards at an angle along the feed direction, meaning the extension direction of the bottom clamping surface 113 forms an angle θ1 with the feed direction. θ1 can take values ​​of 6°, 8°, 10°, 12°, 13°, 15°, etc. By setting these values, the angle between the bottom clamping surface 113 and the feed direction can be between 6° and 15°. Furthermore, the bottom mating surface 212 of the insert 2 has the same inclination angle as the bottom clamping surface 113. Figure 4 As shown, the angle between the bottom mating surface 212 and the feed direction is between 6° and 15°. This allows for a higher degree of fit between the bottom mating surface 212 and the bottom clamping surface 113, and also allows the bottom of the insert 2 to form a certain angle upward along the feed direction. This makes the installation of the insert 2 more stable, which helps to enhance the resistance of the insert 2 to external forces during the machining process and improve the machining accuracy and service life of the insert 2.

[0064] Furthermore, the top clamping surface 112 and the bottom clamping surface 113 have the same tilt angle, which can make the top and bottom of the blade 2 have the same installation angle in the clamping port 11, thereby improving the installation stability of the blade 2 in the clamping port 11 and facilitating the clamping and installation of the blade 2 with the clamping port 11.

[0065] The included angles θ1 and θ2 should not be set too small. If they are too small, the inclination angle of the insert 2 will be too small, and the installation of the insert 2 will be closer to the feed direction, which will reduce the machining stability of the insert 2. On the other hand, the included angles θ1 and θ2 should not be set too large. If they are too large, the inclination angle of the insert 2 will be too large. Although this can enhance the resistance of the insert 2 to external forces during the machining process, it will increase the installation space occupied by the insert 2 on the tool body 1, resulting in an uncoordinated overall installation. Furthermore, the machining of the insert 2 and the clamping port 11 will be more inconvenient.

[0066] In some embodiments, the end clamping surface 114 includes an upper clamping region 1141 and a lower clamping region 1142, with an angle formed between the upper clamping region 1141 and the lower clamping region 1142; the end mating surface 213 includes an upper mating region 2131 and a lower mating region 2132, with an angle formed between the upper mating region 2131 and the lower mating region 2132, the upper clamping region 1141 clamping the upper mating region 2131, and the lower clamping region 1142 clamping the lower mating region 2132.

[0067] Specifically, such as Figure 11 As shown, the upper clamping area 1141 and the lower clamping area 1142 form an angle, that is, the upper clamping area 1141 and the lower clamping area 1142 are intersecting and distributed. The upper mating area 2131 and the lower mating area 2132 also form an angle, that is, the upper mating area 2131 and the lower mating area 2132 are intersecting and distributed. The upper mating area 2131 and the upper clamping area 1141 are distributed correspondingly in the inward and outward directions, and the lower mating area 2132 and the lower clamping area 1142 are distributed correspondingly in the inward and outward directions. This facilitates the upper clamping area 1141 to clamp the upper mating area 2131, and the lower clamping area 1142 to clamp the lower mating area 2132, thereby improving the clamping reliability and clamping convenience of the end of the blade 2 and the end of the clamping port 11.

[0068] Thus, by clamping the intersecting upper clamping area 1141 and lower clamping area 1142 with the intersecting upper mating area 2131 and lower mating area 2132 in a one-to-one correspondence, two sets of non-linear clamping fits can be formed. Compared with the existing cutting tool 100, the blade 2 has a relatively small width and the blade body 1 has a small thickness. The contact area between the end of the blade 2 and the part of the blade body 1 is small. After continuous force along the cutting direction, the part of the blade body 1 is prone to collapse and deformation, which in turn affects the clamping and stability of the tool. The intersecting distribution of this application can make the entire clamping area of ​​the end clamping surface 114 and the end mating surface 213 in the vertical direction larger, which can increase the contact area between the blade 2 and the blade body 1 at the end, increase the stability of the tool, and effectively avoid the end clamping surface 114 of the clamping port 11 from collapsing and deforming under force, which would affect the positioning accuracy of the blade 2 and thus affect the life of the cutting tool 100.

[0069] The upper clamping area 1141 and the lower clamping area 1142 form an angle, which makes the cross-section of the end clamping surface 114 a V-shaped cross-section. The cross-section of the end clamping surface 114 can also be constructed as an arc-shaped cross-section, a W-shaped cross-section, etc.

[0070] In some embodiments, the included angle between the upper mating region 2131 and the lower mating region 2132 is β, and satisfies: 90°<β<180°.

[0071] Specifically, the end mating surface 213 and the end clamping surface 114 are relatively distributed, such as Figure 3 As shown, the upper mating region 2131 and the lower mating region 2132 are recessed towards the side away from the end mating surface 213, as... Figure 4 As shown, an angle β is formed between the upper mating area 2131 and the lower mating area 2132. β can take values ​​such as 95°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, and 175°. By setting these values, the angle between the bottom clamping surface 113 and the feed direction can be between 90° and 180°, forming an obtuse angle between the upper mating area 2131 and the lower mating area 2132, resulting in a large mating area for the end mating surface 213. Furthermore, the angle between the upper mating area 2131 and the lower mating area 2132 can also take other values, not limited to those listed in this embodiment.

[0072] The upper mating area 2131 intersects the feed direction but is not perpendicular to it, while the lower mating area 2132 can be distributed perpendicular to the feed direction, which is horizontal, while the lower mating area 2132 can be vertical. The upper and lower mating areas 2131 and 2132 form a V-shaped structure, and the intersection line between them is located at the center line of the cutter body 1 between the top mating surface 211 and the bottom mating surface 212. This ensures the uniformity of clamping between the end mating surface 213 and the end clamping surface 114 in the vertical direction, improving the clamping reliability of the cutter 2 at the end.

[0073] In some embodiments, the angle between the upper clamping region 1141 and the lower clamping region 1142 is λ, and satisfies: 0°≤λ-β≤4°.

[0074] Specifically, the end mating surface 213 and the end clamping surface 114 are relatively distributed, such as Figure 8 As shown, the upper clamping region 1141 and the lower clamping region 1142 protrude towards the end mating surface 213, respectively. Figure 11As shown, an angle λ is formed between the upper clamping area 1141 and the lower clamping area 1142. λ can be the same as β or greater than β, meaning λ can be between β and β+4°. λ can take values ​​such as 95°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 175°, 180°, 182°, and 183°. By setting these values, an obtuse angle can be formed between the upper clamping area 1141 and the lower clamping area 1142, resulting in a large mating area for the end clamping surface 114. Furthermore, the angle between the upper clamping area 1141 and the lower clamping area 1142 can also take other values, not limited to those listed in this embodiment.

[0075] In this way, when the blade body 1 and the blade 2 are clamped together, the self-centering effect of the blade body 1 on the blade 2 is achieved by the angle relationship between the end of the blade 2 and the end of the blade body 1, which ensures that the end of the blade 2 is reliably connected to the end of the clamping port 11. This improves the installation accuracy and ease of installation of the blade 2, and can eliminate the influence of blade 2 deformation on the clamping accuracy. This ensures that the cutting part 23 at the front of the blade 2 is perpendicular to the feed direction, which has a positive effect on improving the life of the cutting tool 100.

[0076] Furthermore, the angle formed between the upper clamping area 1141 and the lower clamping area 1142 cannot be less than the angle formed between the upper mating area 2131 and the lower mating area 2132. This is not conducive to the fitting and positioning of the end mating surface 213 and the end clamping surface 114, and thus not conducive to the clamping of the end mating surface 213 and the end clamping surface 114.

[0077] In some embodiments, the front end of the blade 2 further has an infeed end face 22 located below the cutting portion 23, and the infeed end face 22 is parallel to the lower mating region 2132.

[0078] Specifically, such as Figure 2 and Figure 4As shown, the front end of the insert 2 is provided with an infeed face 22, which is located below the cutting part 23. The cutting part 23 is located at the top of the front end of the insert 2. A flank face 24 is also provided between the cutting part 23 and the infeed face 22. The cutting part 23, the flank face 24, and the infeed face 22 can be connected sequentially at the front end of the insert 2 through the flank face 24. The infeed face 22 is parallel to the lower mating area 2132, and the lower mating area 2132 is distributed in the vertical direction. The infeed direction is perpendicular to the vertical direction. The direction is perpendicular, that is, the feed end face 22 is distributed perpendicular to the feed direction, and the flank face 24 is constructed to extend obliquely from top to bottom toward the feed end face 22. This allows the cutting part 23 to be located in front of the feed end face 22. In this way, when the cutting part 23 is machining the workpiece, at least a portion of the lower area of ​​the flank face 24 and the feed end face 22 form a gap with the workpiece along the feed direction, reducing the contact area between the non-cutting part 23 of the insert 2 and the workpiece, reducing the resistance of the workpiece to the insert 2, and improving the machining efficiency of the insert 2.

[0079] Furthermore, the back face 24 is constructed to extend obliquely downwards towards the infeed end face 22. The infeed end face 22 and the lower mating area 2132 are parallel. The infeed end face 22 is located on the lower side of the front end of the blade 2, and the lower mating area 2132 is located on the lower side of the rear end of the blade 2. This allows for a smaller bottom dimension of the blade 2, simplifying mold manufacturing and enabling smooth demolding during the production of the cutting tool 100. The infeed end face 22 of the blade 2 has a vertical structure, which, while facilitating production, also increases the length of the bottom mating surface 212, increasing the clamping mating surface area 21 between the bottom of the blade 2 and the bottom of the clamping opening 11, thereby improving the stability of the cutting tool 100.

[0080] In some embodiments, the cutter body 1 is further formed with a deformation notch 12, which is located on the rear side of the clamping opening 11 along the feed direction.

[0081] Specifically, the deformation notch 12 is used to achieve the deformation of the tool body 1 at the clamping opening 11, such as... Figure 1 As shown, the deformation notch 12 is located on the rear side of the clamping port 11 along the feed direction. That is, the deformation notch 12 can be set to be located on the rear side of the clamping port 11, and the deformation notch 12 can be set on the rear upper part of the end clamping surface 114, so that the deformation notch 12 is separated from the end clamping surface 114. The deformation notch 12 has an elastic deformation function. In this way, when installing the blade 2, the top of the blade body 1 can be deformed upward by extending the installation tool such as a wrench into the deformation notch 12, increasing the space at the front end of the clamping port 11, and the blade 2 can be installed in the clamping port 11. The top, bottom and rear end of the clamping port 11 are used to clamp the top, bottom and rear end of the blade 2 respectively, and the installation of the blade 2 is completed. The deformation notch 12 can realize the elastic self-locking clamping of the blade body 1 on the blade 2. The clamping method is simple and convenient.

[0082] Furthermore, after the blade 2 is installed in the clamping port 11, it can be vertically pressed on the top of the blade body 1 by bolts or other fasteners, thereby improving the clamping firmness of the blade 2 in the clamping port 11.

[0083] Furthermore, the deformation notch 12 can be set at the rear upper part of the end clamping surface 114, so that the deformation notch 12 is separated from the end clamping surface 114. The deformation notch 12 can be set without affecting the arrangement of the end clamping surface 114, and the deformation requirement at the clamping opening 11 can be met through the deformation notch 12.

[0084] In some embodiments, each clamping concave surface 214 includes two clamping sub-concave surfaces 2141 forming an angle, the two clamping sub-concave surfaces 2141 intersect to form a concave intersection line 2142, and each clamping convex surface 115 includes two clamping sub-convex surfaces 1151 forming an angle, the two clamping sub-convex surfaces 1151 intersect to form a convex intersection line 1152, and the two clamping sub-concave surfaces 2141 and the two clamping sub-convex surfaces 1151 are fitted and distributed in a one-to-one correspondence.

[0085] Specifically, the clamping mating surface 21 on the blade 2 is constructed as a clamping concave surface 214. The clamping concave surface 214 is recessed in the direction away from the clamping convex surface 115, and each clamping concave surface 214 includes two clamping sub-concave surfaces 2141. That is, the clamping concave surfaces 214 on the blade 2 located at the top, bottom and end respectively include two clamping sub-concave surfaces 2141, and the two clamping sub-concave surfaces 2141 are intersecting and distributed, and a concave intersection line 2142 is formed at the intersection. In this way, an included angle is formed between the two clamping sub-concave surfaces 2141, and a clamping mating space is formed between the two clamping sub-concave surfaces 2141. The shape of the clamping concave surface 214 is V-shaped, which has a simple structure and is easy to process.

[0086] Furthermore, the clamping surface 111 within the clamping opening 11 is constructed as a clamping convex surface 115, which protrudes towards the clamping concave surface 214. Each clamping convex surface 115 includes two clamping sub-convex surfaces 1151. That is, the clamping convex surfaces 115 located at the top, bottom, and end of the clamping opening 11 each include two clamping sub-convex surfaces 1151. The two clamping sub-convex surfaces 1151 are intersecting and distributed, and a convex intersection line 1152 is formed at the intersection. In this way, an angle is formed between the two clamping sub-convex surfaces 1151, and a clamping mating area is formed on the surface of the two clamping sub-convex surfaces 1151. The shape of the clamping convex surface 115 is V-shaped, which has a simple structure and is easy to process.

[0087] Furthermore, the two concave surfaces 2141 of the clamping element and the two convex surfaces 1151 of the clamping element are distributed in a one-to-one correspondence, so that the two concave surfaces 2141 of the clamping element and the two convex surfaces 1151 of the clamping element can be clamped together in a one-to-one correspondence, which can increase the contact area between the clamping mating surface 21 and the clamping surface 111 and improve the clamping reliability of the two.

[0088] The two concave clamping surfaces 2141 can be symmetrically distributed with respect to the intersection line 2142 of the concave surfaces, and the two convex clamping surfaces 1151 can be symmetrically distributed with respect to the intersection line 1152 of the convex surfaces. This ensures that the corresponding contact areas of the two concave clamping surfaces 2141 and the two convex clamping surfaces 1151 are the same, thereby improving the stability of the one-to-one clamping of the two concave clamping surfaces 2141 and the two convex clamping surfaces 1151. It also ensures that the clamping mating surface 21 and the clamping surface 111 are subjected to uniform force, thereby improving the clamping reliability of the two.

[0089] It should be noted that in this embodiment, both the clamping concave surface 214 and the clamping convex surface 115 are constructed as V-shaped structures, and the clamping concave surface 214 and the clamping convex surface 115 can also be constructed as arc-shaped, W-shaped, etc.

[0090] In some embodiments, the concave intersection lines 2142 of the plurality of clamping concave surfaces 214 are located in the same plane, and / or the convex intersection lines 1152 of the plurality of clamping convex surfaces 115 are located in the same plane. That is, the concave intersection lines 2142 of the plurality of clamping concave surfaces 214 are located in the same plane, or the convex intersection lines 1152 of the plurality of clamping convex surfaces 115 are located in the same plane, or the concave intersection lines 2142 of the plurality of clamping concave surfaces 214 are located in the same plane, and the convex intersection lines 1152 of the plurality of clamping convex surfaces 115 are located in the same plane.

[0091] Specifically, the concave intersection lines 2142 of multiple clamping concave surfaces 214 are located in the same plane. The concave intersection lines 2142 of multiple clamping concave surfaces 214 are the lines of symmetry of the corresponding clamping concave surfaces 214, so that the lines of symmetry of multiple clamping concave surfaces 214 are located in the same plane. This allows the multiple clamping concave surfaces 214 to be symmetrically distributed with respect to the same plane, improving the structural consistency of the multiple clamping concave surfaces 214. Furthermore, the lines of symmetry of multiple clamping concave surfaces are located at the center of the thickness direction of the blade 2, so that the multiple clamping concave surfaces 214 are symmetrically distributed in the thickness direction of the blade 2. Furthermore, the intersection lines 1152 of the convex surfaces of multiple clamping convex surfaces 115 are located in the same plane. The intersection lines 1152 of the convex surfaces of multiple clamping convex surfaces 115 are the lines of symmetry of the corresponding clamping convex surfaces 115, so that the lines of symmetry of multiple clamping convex surfaces 115 are located in the same plane. This allows the multiple clamping convex surfaces 115 to be symmetrically distributed with respect to the same plane, improving the structural consistency of the multiple clamping convex surfaces 115. Moreover, the lines of symmetry of the multiple clamping convex surfaces are located at the center of the thickness direction of the blade body 1, so that the multiple clamping convex surfaces 115 are symmetrically distributed in the thickness direction of the blade body 1.

[0092] In this way, the intersection line 1152 of the convex surfaces of multiple clamping convex surfaces 115 and the intersection line 2142 of the concave surfaces of multiple clamping concave surfaces 214 can be located in the same plane. Furthermore, the same plane is located at the center of the tool body 1, and this plane is perpendicular to the feed direction of the tool body 1. The cutting part 23 at the front end of the insert 2 is perpendicular to the feed direction. During cutting, the entire cutting part 23 contacts the workpiece, and its force is balanced. The tool as a whole is subjected to force balance, which improves the stability and machining accuracy of the insert 2.

[0093] In other embodiments, the included angle between the two concave surfaces 2141 of the clamping elements is α, and the included angle between the two convex surfaces 1151 of the clamping elements is δ, and satisfies: 0°≤δ-α≤4°.

[0094] Specifically, such as Figure 5 and Figure 6 As shown, the two clamping concave surfaces 2141 intersect and are distributed, forming an angle α between them, as... Figure 9 and Figure 10 As shown, the two clamping convex surfaces 1151 intersect and form an angle δ between them. The angle between the two clamping convex surfaces 1151 is equal to or greater than the angle between the two clamping concave surfaces 2141, that is, the angle δ is equal to α and the angle δ is greater than α. When the angle δ is greater than α, δ can take values ​​such as α+1°, α+2°, α+3°, α+4°, etc., so that the angle between the two clamping convex surfaces 1151 is between α and α+4°. In this way, when the tool body 1 clamps the insert 2, the self-centering clamping of the three pairs of clamping concave surfaces 214 and clamping convex surfaces 115 ensures that the insert 2 is parallel to the feed direction as a whole. In particular, the cutting part 23 at the front of the insert 2 is perpendicular to the feed direction. During the cutting process, the entire cutting part 23 contacts the workpiece and is subjected to balanced forces. The cutting tool 100 is subjected to balanced forces as a whole, which will not cause the product to shift laterally or longitudinally. The cutting tool 100 can perform stable cutting, thereby obtaining a good cutting tool life.

[0095] Furthermore, the included angle between the two clamping convex surfaces 1151 cannot be less than the included angle between the two clamping concave surfaces 2141. This is not conducive to the fitting and positioning of the clamping convex surface 115 and the clamping concave surface 214, and thus not conducive to the clamping of the blade 2 and the clamping opening 11.

[0096] The included angle between the two convex surfaces 1151 and the included angle between the two concave surfaces 2141 can both be set to obtuse angles, which can increase the clamping area between the convex surface 115 and the concave surface 214 and improve the clamping reliability between them.

[0097] The existing cutting tool 100 has a short blade 2, resulting in a short contact length between the blade 2 and the tool body 1. During the sintering process, the blade 2 deforms, and its top and bottom have a certain parallelism error along the feed direction. This causes the blade 2 to be non-parallel to the feed direction after being clamped onto the tool body 1, and the cutting portion 23 of the blade 2 is not perpendicular to the feed direction of the cutting tool 100. During cutting, the cutting portion 23 of the blade 2 makes asynchronous and uneven contact with the workpiece, leading to an imbalance of forces on the cutting tool 100 in the transverse and longitudinal directions. This results in deformation or skewness of the cutting tool 100, unstable clamping of the blade 2 by the tool body 1, or the tool body 1 scraping against the workpiece, affecting the cutting stability and overall lifespan of the cutting tool 100. The cutting tool 100 of this application, through the self-centering clamping of three pairs of clamping concave surfaces 214 and clamping convex surfaces 115, ensures that the entire blade 2 is parallel to the feed direction. In particular, the cutting part 23 at the front of the blade 2 is perpendicular to the feed direction. During cutting, the entire cutting part 23 contacts the workpiece and is subjected to balanced forces. The cutting tool 100 is subjected to balanced forces as a whole, which will not cause the product to shift laterally or longitudinally. The cutting tool 100 can perform stable cutting, thereby obtaining a good cutting tool life.

[0098] In this way, when machining the clamping opening 11 on the tool body 1, the same forming tool can be used to complete the machining of multiple clamping surfaces 111 of the entire clamping opening 11. Through high-precision machining, it is ensured that each clamping surface 111 is symmetrically distributed along the center of the tool body 1, which can improve machining accuracy and efficiency, and is also economical.

[0099] 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.

[0100] 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 cutting tool, characterized by include: The blade body has a clamping opening, and multiple clamping surfaces are formed within the clamping opening; The blade is clamped at the clamping opening. The blade has clamping mating surfaces that correspond one-to-one with a plurality of clamping surfaces. One of the clamping surfaces and the corresponding clamping mating surfaces is a clamping convex surface and the other is a clamping concave surface. The blade has a cutting portion that extends out of the clamping opening. The clamping opening is constructed to extend upwards along the feed direction, and the cutting blade is clamped upwards within the clamping opening along the feed direction.

2. The cutting tool according to claim 1, characterized in that The plurality of clamping surfaces are a top clamping surface, a bottom clamping surface, and an end clamping surface, and the plurality of clamping mating surfaces are a top mating surface, a bottom mating surface, and an end mating surface. The top clamping surface clamps the top mating surface, the bottom clamping surface clamps the bottom mating surface, and the end clamping surface clamps the end mating surface. Both the top clamping surface and the bottom clamping surface are configured to extend upwardly at an angle along the feed direction.

3. The cutting tool according to claim 2, characterized in that The angle between the top clamping surface and the feed direction is θ1, and satisfies: 6°≤θ1≤15°; And / or, the angle between the bottom clamping surface and the feed direction is θ2, and satisfies: 6°≤θ2≤15°.

4. The cutting tool according to claim 2, wherein The end clamping surface includes an upper clamping area and a lower clamping area, and the upper clamping area and the lower clamping area form an angle between them; The end mating surface includes an upper mating area and a lower mating area, with an included angle between the upper mating area and the lower mating area. The upper clamping area clamps the upper mating area, and the lower clamping area clamps the lower mating area.

5. The cutting tool according to claim 4, characterized in that The included angle between the upper mating region and the lower mating region is β, and satisfies: 90° < β < 180°.

6. The cutting tool according to claim 5, characterized in that The angle between the upper clamping area and the lower clamping area is λ, and satisfies: 0°≤λ-β≤4°.

7. The cutting tool according to claim 4, wherein The front end of the blade also has an infeed end face located below the cutting section, and the infeed end face is parallel to the lower mating area.

8. The cutting tool according to claim 2, wherein The cutter body also has a deformation notch, which is located on the rear side of the clamping opening along the feed direction.

9. The parting blade of claim 1 wherein, Each of the clamping concave surfaces includes two clamping sub-concave surfaces forming an angle, the two clamping sub-concave surfaces intersect to form a concave intersection line, and each of the clamping convex surfaces includes two clamping sub-convex surfaces forming an angle, the two clamping sub-convex surfaces intersect to form a convex intersection line, and the two clamping sub-concave surfaces and the two clamping sub-convex surfaces are distributed in a one-to-one correspondence.

10. The cutting tool according to claim 9, characterized in that The lines of intersection of the concave surfaces of the plurality of clamping concave surfaces are located in the same plane, and / or the lines of intersection of the convex surfaces of the plurality of clamping convex surfaces are located in the same plane; And / or, the included angle between the two concave surfaces of the clamping sub is α, and the included angle between the two convex surfaces of the clamping sub is δ, and satisfies: 0°≤δ-α≤4°.

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