Cutting tool

Abstract

The invention relates to the technical field of cutting machining, and discloses a cutting tool which comprises a tool body, a blade and a limiting assembly, the tool body and the blade are detachably connected through a fastener, the fastener is used for limiting relative displacement of the blade and the tool body in the axial direction of the cutting tool, and the limiting assembly is arranged between the tool body and the blade. The limiting assembly is used for limiting relative displacement of the blade and the cutter body in the circumferential direction and the radial direction of the cutting tool. According to the cutting tool provided by the embodiment of the invention, the fastening piece and the limiting assembly are arranged, and the relative displacement of the blade and the tool body in the axial direction, the radial direction and the circumferential direction of the cutting tool can be limited through the matching of the fastening piece and the limiting assembly, so that the relative position of the blade and the tool body is stable; the situation that the blade and the cutter body of the cutting tool shake mutually in the workpiece machining process is avoided to a certain extent, the cutting tool is more stable in the cutting process, the working performance of the cutting tool is improved, and therefore the machining quality of workpieces is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cutting processing, in particular to a cutting tool. Background Art

[0002] In the prior art, in order to machine oil grooves and water grooves on parts such as shafts and disks, cutting tools are usually used to perform grooving on the above parts.

[0003] However, the existing cutting tools vibrate greatly during the cutting process, which affects the cutting performance of the cutting tools and further affects the processing quality of the workpiece. Summary of the invention

[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 provides a cutting tool, which has a stable structure, is conducive to ensuring the stability of the cutting tool during cutting, improving the processing performance of the cutting tool, thereby improving the processing quality of the workpiece, and solving the technical problem in the prior art that the cutting tool vibrates greatly during the cutting process and affects the processing quality of the workpiece.

[0005] The cutting tool according to an embodiment of the present invention comprises: a tool body and a blade, wherein the tool body and the blade are detachably connected via a fastener, and the fastener is used to limit the relative displacement of the blade and the tool body in the axial direction of the cutting tool; a limit assembly, wherein the limit assembly is arranged between the tool body and the blade, and the limit assembly is used to limit the relative displacement of the blade and the tool body in the circumferential and radial directions of the cutting tool.

[0006] According to the cutting tool of the embodiment of the present invention, a fastener is set to limit the relative displacement of the blade and the tool body in the axial direction of the cutting tool, and a limit assembly is set to limit the relative displacement of the blade and the tool body in the radial and circumferential directions of the cutting tool, so as to achieve the purpose of limiting the relative displacement of the blade and the tool body in the axial, radial and circumferential directions of the cutting tool, so that the relative position of the blade and the tool body is stabilized, and to a certain extent, the blade and the tool body of the cutting tool are prevented from shaking relative to each other during the processing process, thereby improving the structural stability of the cutting tool when cutting a workpiece, and then improving the working performance of the cutting tool, thereby improving the processing quality of the workpiece.

[0007] In some embodiments, the blade is disposed at one axial end of the blade body and is abutted against the axial end of the blade body, and the fastener is passed through the blade and fixedly connected to the blade body.

[0008] In some embodiments, the limit assembly includes a first limit member and a second limit member, the first limit member is used to limit the relative displacement of the blade and the tool body in the radial direction of the cutting tool, and the second limit member is used to limit the relative displacement of the blade and the tool body in the circumferential direction of the cutting tool.

[0009] In some embodiments, the first limiting member includes a convex portion and a concave portion, the outer surface of the convex portion is formed as a convex spherical surface, the outer surface of the concave portion is formed as a concave spherical surface, the convex portion can be limitedly fitted in the concave portion, one of the convex portion and the concave portion is arranged on the blade, and the other is arranged on the blade body.

[0010] In some embodiments, the convex portion is arranged at one end of the blade facing the tool body, and the concave portion is arranged at one end of the tool body facing the blade; in the radial direction of the cutting tool, the maximum dimension of the blade is larger than the maximum dimension of the convex portion, so as to form a first mating surface arranged around the outer periphery of the convex portion on the blade, and the maximum dimension of the tool body is larger than the maximum dimension of the concave portion, so as to form a second mating surface arranged around the outer periphery of the concave portion on the tool body, and the first mating surface is stop-fitted with the second mating surface.

[0011] In some embodiments, the second limiting member includes a limiting rib and a limiting groove that cooperate with each other, one of the limiting rib and the limiting groove is arranged on the blade, and the other is arranged on the tool body, and the limiting rib and the limiting groove extend along the radial direction of the cutting tool.

[0012] In some embodiments, the limiting ribs and the limiting grooves include a plurality of limiting ribs, the plurality of limiting ribs correspond one-to-one to the plurality of limiting grooves, the plurality of limiting ribs are arranged at intervals along the circumference of the cutting tool, and the distance between two adjacent limiting ribs is the same.

[0013] In some embodiments, the blade includes a main body portion and a cutting portion, the main body portion is cooperatively connected to the tool body, the cutting portion is arranged radially outward of the main body portion and protrudes from the main body portion, and the cutting portion is suitable for processing a workpiece.

[0014] In some embodiments, the cutting portion is arranged on the side of the main body facing the workpiece and extends along the circumference of the main body. The projection of the upper surface of the cutting portion on the first plane is not lower than the projection of the central axis of the main body on the first plane. The first plane is a plane parallel to the axial direction of the cutting tool and perpendicular to the upper surface of the cutting portion.

[0015] In some embodiments, in the protruding direction of the cutting portion, the cutting portion includes a first end and a second end arranged opposite to each other, the first end is connected to the main body, and in the axial direction of the cutting tool, the width of the first end is smaller than the width of the second end, so that the cutting portion extends obliquely toward the side wall of the tool body in the protruding direction of the cutting portion.

[0016] Additional aspects and advantages of the invention will become apparent from the following description, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 Schematic diagram of a cutting tool according to some embodiments of the present invention; Figure 2 An exploded view of a cutting tool according to some embodiments of the present invention; Figure 3 for Figure 2 Enlarged view of area I in the middle; Figure 4 for Figure 2 A schematic diagram from another angle; Figure 5 for Figure 4 Enlarged view of middle region II; Figure 6 An exploded front view of a cutting tool according to some embodiments of the present invention; Figure 7 for Figure 6 Sectional view along line KK; Figure 8 A front view of a cutting tool according to some embodiments of the present invention; Fig. 9 An exploded top view of a cutting tool according to some embodiments of the present invention; Fig.10 for Fig. 9 Sectional view along line LL; Fig.11 1 is a top view of a cutting tool according to some embodiments of the present invention.

[0018] Reference numerals: 1000. Cutting tools; 100, blade body; 110, second mating surface; 120, second mounting hole; 200, blade; 210, first mating surface; 220, main body; 230, cutting portion; 231, first end; 232, second end; 240, first mounting hole; 300, fasteners; 400, limit assembly; 410. The first limiting member; 411. The convex part; 412. The concave part; 420, a second limiting member; 421, a limiting rib; 422, a limiting groove. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] A cutting tool 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0022] Combination Figure 1 , Figure 2 and Figure 4 As shown, the cutting tool 1000 according to the embodiment of the present invention includes: a tool body 100 , a blade 200 and a limiting assembly 400 .

[0023] The cutter body 100 and the blade 200 are detachably connected via a fastener 300, and the fastener 300 is used to limit the relative displacement of the blade 200 and the cutter body 100 in the axial direction of the cutting tool 1000. It can be understood here that the fastener 300 can not only realize the detachable connection between the cutter body 100 and the blade 200, but also limit the relative displacement of the blade 200 and the cutter body 100 in the axial direction of the cutting tool 1000, so that the relative position of the blade 200 and the cutter body 100 in the axial direction of the cutting tool 1000 is stable, thereby improving the structural stability of the cutting tool 1000, which is conducive to improving the working performance of the cutting tool 1000.

[0024] It should be noted that the specific extension direction of the axial direction mentioned above can be found in Figure 1 .

[0025] In addition, the detachable connection between the cutter body 100 and the blade 200 is achieved through the fastener 300, so that the cutter body 100 can be used to support the blade 200, thereby improving the position stability of the blade 200. The blade 200 is used to cut the workpiece, thereby ensuring the working performance of the blade 200 to a certain extent.

[0026] At the same time, the detachable connection can also reduce the difficulty of disassembling and assembling the tool body 100 and the blade 200, thereby reducing the difficulty of assembling the cutting tool 1000.

[0027] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the limiting assembly 400 is arranged between the cutter body 100 and the blade 200, and the limiting assembly 400 is used to limit the relative displacement of the blade 200 and the cutter body 100 in the circumferential and radial directions of the cutting tool 1000. This makes the relative position of the blade 200 and the cutter body 100 in the circumferential and radial directions of the cutting tool 1000 stable, further improves the structural stability of the cutting tool 1000, and avoids the situation that the blade 200 and the cutter body 100 of the cutting tool 1000 shake against each other during the processing of the workpiece to a certain extent, makes the cutting tool 1000 more stable during cutting, improves the working performance of the cutting tool 1000, and thereby improves the processing quality of the workpiece.

[0028] It should be noted that the specific circumferential extension direction and the specific radial extension direction mentioned above can be referred to in Figure 1 .

[0029] It can be seen from the above structure that the cutting tool 1000 of the embodiment of the present invention is provided with a fastener 300 to limit the relative displacement of the blade 200 and the tool body 100 in the axial direction of the cutting tool 1000, and a limit assembly 400 is provided to limit the relative displacement of the blade 200 and the tool body 100 in the circumferential and radial directions of the cutting tool 1000, so that the relative positions of the blade 200 and the tool body 100 in the axial, radial and circumferential directions of the cutting tool 1000 are stable, which to a certain extent avoids the situation in which the blade 200 and the tool body 100 of the cutting tool 1000 shake against each other during the processing of the workpiece, makes the cutting tool 1000 more stable during cutting, improves the working performance of the cutting tool 1000, and thereby improves the processing quality of the workpiece.

[0030] It can be understood that, compared with the prior art, the present application utilizes fasteners 300 and limit assemblies 400 to limit the relative displacement of the blade 200 and the tool body 100 in the axial, circumferential and radial directions of the cutting tool 1000, so that the relative position of the blade 200 and the tool body 100 is stable, thereby avoiding unstable clamping of the cutting tool 1000 during processing, thereby making the cutting tool 1000 more stable during cutting and greatly ensuring the processing quality of the workpiece.

[0031] In some embodiments, the fastener 300 is a fastening bolt or a fastening screw, etc., so that the fastener 300 can be used to achieve detachable matching between the blade 200 and the blade body 100.

[0032] In some embodiments, Figure 1 As shown, the blade 200 is arranged at one end of the cutter body 100 in the axial direction and is abutted against the axial end of the cutter body 100, and the fastener 300 is passed through the blade 200 and is fixedly connected to the cutter body 100. It can be understood here that in the process of assembling the blade 200 and the cutter body 100, the blade 200 is firstly arranged at one end of the cutter body 100 in the axial direction and is abutted against the axial end of the cutter body 100, and then the fastener 300 is passed through the blade 200 and is fixedly connected to the cutter body 100, so as to realize the matching connection of the cutter body 100 and the blade 200 by using the fastener 300, and to facilitate limiting the relative displacement of the blade 200 and the cutter body 100 in the axial direction of the cutting tool 1000, so that the relative position of the blade 200 and the cutter body 100 in the axial direction of the cutting tool 1000 is stable, and the structural stability of the cutting tool 1000 is improved.

[0033] The stop fit means that a side of the blade 200 facing the blade body 100 contacts and fits with a side of the blade body 100 facing the blade 200. The contact fit can first position the blade 200 and the blade body 100, thereby reducing the difficulty of assembling the blade 200 and the blade body 100.

[0034] In a specific example, in the axial direction of the cutting tool 1000, the fastener 300 is locked to generate an axial force to clamp the blade 200 on the tool body 100, so that the blade 200 can be close to the tool body 100, limit the relative displacement of the blade 200 and the tool body 100 in the axial direction of the cutting tool 1000, enhance the axial matching stability between the blade 200 and the tool body 100, and enable the blade 200 to better process the workpiece, thereby ensuring the processing quality of the workpiece to a certain extent.

[0035] In some embodiments, in combination Figure 2-Figure 5 As shown, a first mounting hole 240 is provided inside the blade 200, and a second mounting hole 120 is provided inside the blade body 100. The first mounting hole 240 and the second mounting hole 120 are arranged opposite to each other. The fastener 300 is passed through the first mounting hole 240 and fixedly connected in the second mounting hole 120, so as to utilize the fastener 300 to realize the fixed connection between the blade body 100 and the blade 200.

[0036] In some embodiments, in combination Figure 1 , Figure 2 and Figure 4As shown, the axial center line of the first mounting hole 240, the axial center line of the second mounting hole 120 and the axial center line of the blade 100 are coaxial, that is, the three axial center lines are on the same straight line, thereby ensuring the coaxiality of the center line of the first mounting hole 240, the center line of the second mounting hole 120 and the center line of the blade 100, so that the first mounting hole 240 and the second mounting hole 120 can be arranged opposite each other, so that the fastener 300 can be fixedly connected in the second mounting hole 120 after passing through the first mounting hole 240, so as to realize the fixed connection between the blade 200 and the blade body 100, and to a certain extent ensure the clamping stability of the blade 200 and the blade body 100.

[0037] In the description of the invention, features defined as “first” or “second” may explicitly or implicitly include one or more such features, and are used to distinguish and describe the features, without any distinction in order or importance.

[0038] In some embodiments, in combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the limiting assembly 400 includes a first limiting member 410 and a second limiting member 420, wherein the first limiting member 410 is used to limit the relative displacement of the blade 200 and the cutter body 100 in the radial direction of the cutting tool 1000, and the second limiting member 420 is used to limit the relative displacement of the blade 200 and the cutter body 100 in the circumferential direction of the cutting tool 1000. Thus, the limiting assembly 400 is used to limit the relative displacement of the blade 200 and the cutter body 100 in the circumferential and radial directions of the cutting tool 1000, thereby ensuring the relative position stability of the blade 200 and the cutter body 100 in the radial and circumferential directions of the cutting tool 1000, thereby ensuring the clamping stability of the blade 200 and the cutter body 100, improving the structural stability of the cutting tool 1000, and effectively improving the machining accuracy of the cutting tool 1000 on the workpiece to a certain extent.

[0039] In some embodiments, in combination Figure 3 and Figure 5 As shown, the first position-limiting member 410 includes a convex portion 411 and a concave portion 412. The outer surface of the convex portion 411 is formed as a convex spherical surface, and the outer surface of the concave portion 412 is formed as a concave spherical surface. The convex portion 411 can be limitedly matched in the concave portion 412. One of the convex portion 411 and the concave portion 412 is provided on the blade 200, and the other is provided on the blade body 100. Here, it means that when the convex portion 411 is provided on the blade 200, the concave portion 412 is provided on the blade 200; when the convex portion 411 is provided on the blade body 100, the concave portion 412 is provided on the blade 200. In this way, when the blade 200 is provided on the blade body 100, the convex portion 411 and the concave portion 412 can be used to realize the limited matching of the blade body 100 and the blade 200.

[0040] At the same time, because the outer surface of the protrusion 411 is formed as a convex spherical surface and the outer surface of the recessed portion 412 is formed as a concave spherical surface, when the protrusion 411 is limitedly fitted in the recessed portion 412, the relative displacement of the protrusion 411 and the recessed portion 412 in the radial direction can be avoided, thereby achieving the purpose of limiting the relative displacement of the blade 200 and the tool body 100 in the radial direction of the cutting tool 1000, and ensuring the clamping stability of the blade 200 and the tool body 100 to a certain extent.

[0041] Optionally, the curvature radius R1 of the convex spherical surface is smaller than the curvature radius R2 of the concave spherical surface, so that the curvature radius of the convex portion 411 is smaller than the curvature radius of the concave portion 412, so that the convex portion 411 can be limitedly fitted in the concave portion 412, so that the convex portion 411 and the concave portion 412 can cooperate to limit the relative displacement of the blade 200 and the tool body 100 in the radial direction of the cutting tool 1000, and to ensure the limiting effect of the limiting assembly 400 to a certain extent.

[0042] Optionally, combined Figure 2 and Figure 4 As shown, the convex portion 411 is provided on the blade 200, and the concave portion 412 is provided on the cutter body 100. Here, it means that the blade 200 is provided with a convex spherical surface, and the cutter body 100 is provided with a concave spherical surface, and the convex spherical surface and the concave spherical surface are limitedly matched to achieve the limited matching of the blade 200 and the cutter body 100, so as to limit the relative displacement of the blade 200 and the cutter body 100 in the radial direction of the cutting tool 1000.

[0043] Alternatively, if Figure 2 and Figure 4 As shown, the convex portion 411 is provided at one end of the blade 200 facing the blade body 100, and the concave portion 412 is provided at one end of the blade body 100 facing the blade 200. It is ensured that when the blade 200 is provided at one end of the blade body 100 in the axial direction, the convex portion 411 can be limitedly fitted in the concave portion 412.

[0044] In other embodiments, the convex portion 411 is provided on the cutter body 100, and the concave portion 412 is provided on the blade 200. That is to say, it is not limited to providing the convex portion 411 on the blade 200 and the concave portion 412 on the cutter body 100, and the convex portion 411 can also be provided on the cutter body 100 and the concave portion 412 can be provided on the blade 200, that is, the cutter body 100 is provided with a convex spherical surface, and the blade 200 is provided with a concave spherical surface, and the convex spherical surface and the concave spherical surface are closely matched with each other, and the blade 200 and the cutter body 100 can also achieve the limited matching, which is used to limit the relative displacement of the cutter body 100 and the blade 200 in the radial direction of the cutting tool 1000.

[0045] In some embodiments, Figure 3 and Figure 5As shown, the convex part 411 is provided at one end of the blade 200 facing the cutter body 100, and the concave part 412 is provided at one end of the cutter body 100 facing the blade 200. In the radial direction of the cutting tool 1000, the maximum size of the blade 200 is greater than the maximum size of the convex part 411, so as to form a first matching surface 210 arranged around the outer periphery of the convex part 411 on the blade 200, and the maximum size of the cutter body 100 is greater than the maximum size of the concave part 412, so as to form a second matching surface 110 arranged around the outer periphery of the concave part 412 on the cutter body 100, and the first matching surface 210 and the second matching surface 110 are stop-matched. This realizes the stop-matching of the cutter body 100 and the blade 200, increases the stop-matching area of ​​the cutter body 100 and the blade 200, avoids point-to-point contact when the cutter body 100 and the blade 200 are stop-matched, thereby avoiding the cutter body 100 and the blade 200 from wearing each other, and prolonging the service life of the convex part 411 and the concave part 412.

[0046] It should be noted that since the recess 412 is provided at one end of the tool body 100 facing the blade 200, and the outer surface of the recess 412 is formed as a concave spherical surface, if the maximum size of the tool body 100 is set to be the same as the maximum size of the recess 412 in the radial direction of the cutting tool 1000, a sharp point is likely to appear at the connection between the tool body 100 and the recess 412. On the one hand, the sharp point is likely to cause damage to the staff before the tool body 100 and the blade 200 are assembled. On the other hand, it can also cause point contact between the tool body 100 and the blade 200, resulting in the tool body 100 and the blade 200 being easily worn against each other, thereby shortening the service life of the protrusion 411 and the recess 412.

[0047] Based on this, the present application sets the maximum size of the blade body 100 to be larger than the maximum size of the recess 412, and correspondingly sets the maximum size of the blade 200 to be the same as the maximum size of the protrusion 411. While avoiding the presence of sharp points at the ends of the blade body 100 and the blade 200, thereby avoiding injuries to the staff during the transportation process before the blade body 100 and the blade 200 are assembled, it can also avoid point-to-point contact between the blade body 100 and the blade 200 when they are stopped and matched, thereby extending the service life of the protrusion 411 and the recess 412, and improving the stopping strength of the blade body 100 and the blade 200.

[0048] In some embodiments, in combination Figure 3 and Figure 5As shown, the second limiting member 420 includes a limiting rib 421 and a limiting groove 422 for limiting cooperation, one of the limiting rib 421 and the limiting groove 422 is provided on the blade 200, and the other is provided on the cutter body 100, and the limiting rib 421 and the limiting groove 422 extend along the radial direction of the cutting tool 1000. Here, it means that when the limiting rib 421 is provided on the blade 200, the limiting groove 422 is provided on the cutter body 100, and when the limiting rib 421 is provided on the cutter body 100, the limiting groove 422 is provided on the blade 200, so that when the blade 200 is provided on the cutter body 100, the limiting rib 421 and the limiting groove 422 are used to realize the limiting cooperation between the cutter body 100 and the blade 200.

[0049] At the same time, since the limiting ribs 421 and the limiting grooves 422 both extend along the radial direction of the cutting tool 1000, when the limiting ribs 421 and the limiting grooves 422 are limited and matched, the limiting ribs 421 and the limiting grooves 422 can be prevented from having relative displacement in the circumferential direction thereof, thereby achieving the purpose of using the limiting ribs 421 and the limiting grooves 422 to limit the relative displacement of the blade 200 and the tool body 100 in the circumferential direction of the cutting tool 1000, and to a certain extent, ensuring the matching stability of the blade 200 and the tool body 100 in the circumferential direction of the cutting tool 1000, effectively improving the structural stability of the cutting tool 1000, and ultimately improving the processing quality of the workpiece.

[0050] Optionally, the curvature radius R3 of the limiting rib 421 is smaller than the curvature radius R4 of the limiting groove 422. It is ensured that the limiting rib 421 can be effectively matched with the limiting groove 422 to achieve the limiting match between the limiting rib 421 and the limiting groove 422, so as to facilitate the use of the limiting rib 421 and the limiting groove 422 to limit the relative displacement of the blade 200 and the tool body 100 in the circumferential direction of the cutting tool 1000, and to ensure the limiting effect of the limiting assembly 400 to a certain extent.

[0051] Optionally, combined Figure 3 and Figure 5 As shown, the limiting rib 421 is provided on the blade 200, and the limiting groove 422 is provided on the cutter body 100. The limiting rib 421 and the limiting groove 422 are limitedly matched to limit the relative displacement of the blade 200 and the cutter body 100 in the circumferential direction of the cutting tool 1000.

[0052] In other embodiments, the limiting rib 421 is provided on the cutter body 100, and the limiting groove 422 is provided on the blade 200 (not shown in the example figure). Here, it means that it is not limited to providing the limiting rib 421 on the blade 200 and the limiting groove 422 on the cutter body 100. The limiting rib 421 can also be provided on the cutter body 100 and the limiting groove 422 can also be provided on the cutter blade 200. In this way, when the limiting rib 421 and the limiting groove 422 are in a limiting cooperation, the limiting cooperation of the blade 200 and the cutter body 100 can also be achieved, so as to facilitate the relative displacement of the blade 200 and the cutter body 100 in the circumferential direction of the cutting tool 1000 by using the limiting rib 421 and the limiting groove 422.

[0053] In some embodiments, in combination Figure 3 and Figure 5 As shown, the limiting rib 421 is arranged on the convex spherical surface, and the limiting groove 422 is arranged on the concave spherical surface. In other words, the second limiting member 420 is arranged on the first limiting member 410, so that when the first limiting member 410 is used to limit the relative displacement of the blade 200 and the cutter body 100, the second limiting member 420 can be used to limit the relative displacement of the blade 200 and the cutter body 100, so as to achieve the purpose of limiting the relative displacement of the blade 200 and the cutter body 100 in the circumferential and radial directions of the cutting tool 1000 by the limiting assembly 400, and ensure the relative position stability of the blade 200 and the cutter body 100 in the radial and circumferential directions of the cutting tool 1000.

[0054] In some embodiments, in combination Figure 3 and Figure 5 As shown, the limiting ribs 421 and the limiting grooves 422 include a plurality of limiting ribs 421 and a plurality of limiting grooves 422, and the plurality of limiting ribs 421 are arranged at intervals along the circumference of the cutting tool 1000, and the distance between two adjacent limiting ribs 421 is the same. It can be understood here that the plurality of limiting ribs 421 are arranged at equal intervals along the circumference of the cutting tool 1000, that is, the plurality of limiting ribs 421 are arranged in a circular array around the cutting tool 1000, so that the plurality of limiting ribs 421 are evenly distributed around the cutting tool 1000. Since the plurality of limiting ribs 421 correspond to the plurality of limiting grooves 422 one by one, the plurality of limiting grooves 422 can also be arranged at intervals along the circumference of the cutting tool 1000, so that the limiting ribs 421 and the limiting grooves 422 can be used to cooperate to limit the relative displacement of the blade 200 and the tool body 100 in the circumferential direction of the cutting tool 1000, and enhance the limiting effect of the second limiting member 420.

[0055] In addition, by setting a plurality of limiting ribs 421 and a plurality of limiting grooves 422, the plurality of limiting ribs 421 and the plurality of limiting grooves 422 can be used to cooperate to limit the relative displacement of the blade 200 and the tool body 100 in the radial direction of the cutting tool 1000, so that the second limiting member 420 can not only limit the relative displacement of the blade 200 and the tool body 100 in the circumferential direction of the cutting tool 1000, but also limit the relative displacement of the blade 200 and the tool body 100 in the radial direction of the cutting tool 1000, thereby further improving the limiting effect of the second limiting member 420, making the structure of the cutting tool 1000 stable, and improving the working performance of the cutting tool 1000.

[0056] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0057] In some embodiments, in combination Figure 3 and Figure 5 As shown, a plurality of limiting ribs 421 are provided on the convex portion 411 and are arranged at equal intervals in the circumferential direction of the convex portion 411, and a plurality of limiting grooves 422 are provided on the concave portion 412 and are arranged at equal intervals in the circumferential direction of the concave portion 412, so as to utilize the plurality of limiting ribs 421 and the plurality of limiting grooves 422 to cooperate in limiting the relative displacement of the blade 200 and the tool body 100 in the circumferential direction and radial direction of the cutting tool 1000.

[0058] In some embodiments, the number of the limiting ribs 421 is 2 to 6.

[0059] Correspondingly, the number of the limiting grooves 422 corresponding one to one with the limiting ribs 421 is also 2 to 6.

[0060] Among them, when the number of the limiting ribs 421 and the limiting grooves 422 is small, the limiting effect of the second limiting member 420 will be reduced; when the number of the limiting ribs 421 and the limiting grooves 422 is large, the molding difficulty of the second limiting member 420 will be increased.

[0061] Based on this, the present application sets the number of the limiting ribs 421 and the limiting grooves 422 to 2 to 6, which can improve the limiting effect of the second limiting member 420 and reduce the difficulty of forming the second limiting member 420.

[0062] Optionally, the number of the limiting ribs 421 may be 2, 3, 4, 5 or 6, etc., and the number of the limiting grooves 422 may be 2, 3, 4, 5 or 6, etc. correspondingly.

[0063] Through the above-mentioned arrangement, during the specific assembly process of the cutting tool 1000, the blade 200 is first arranged at one end of the tool body 100 in the axial direction. At this time, the protrusion 411 on the blade 200 is limitedly matched in the recess 412 on the tool body 100, and the limiting rib 421 on the blade 200 is limitedly matched in the limiting groove 422 on the tool body 100, and the first mating surface 210 and the second mating surface 110 are stop-fitted. Subsequently, the fastener 300 is passed through the first mounting hole 240 and fixedly connected in the second mounting hole 120 to realize the fixed connection between the tool body 100 and the blade 200, and to stabilize the relative position of the tool body 100 and the blade 200, so that the cutting tool 1000 is more stable during cutting, thereby improving the working performance of the cutting tool 1000.

[0064] In some embodiments, in combination Figure 1 , Figure 2 and Figure 4 As shown, the blade 200 includes a main body 220 and a cutting part 230. The main body 220 is connected with the cutter body 100. The cutting part 230 is arranged on the radial outer side of the main body 220 and protrudes from the main body 220. The cutting part 230 is suitable for processing a workpiece. The blade 200 can be used to process a workpiece, and the working performance of the blade 200 is guaranteed to a certain extent, thereby ensuring the working performance of the cutting tool 1000.

[0065] In a specific example, the cutting portion 230 protrudes from the main body 220 , and the cutting portion 230 is used to cut a groove on the workpiece to achieve the purpose of processing the workpiece.

[0066] At the same time, by connecting the main body 220 with the blade body 100, the blade 200 and the blade body 100 are connected together, thereby reducing the difficulty of connecting the blade 200 and the blade body 100. After the blade 200 and the blade body 100 are connected together, they can also provide support force for the cutting part 230, thereby improving the working performance of the cutting part 230.

[0067] In some embodiments, in combination Figure 2 , Figure 3 and Figure 4 As shown, a first mounting hole 240 is provided inside the main body 220, a second mounting hole 120 is provided inside the blade body 100, and a fastener 300 is passed through the first mounting hole 240 and fixedly connected in the second mounting hole 120, so as to utilize the fastener 300 to realize the mating connection between the main body 220 and the blade 200.

[0068] In some embodiments, the cutting portion 230 is integrally formed on the radially outer side of the main body portion 220 so that the blade 200 is formed as an integral piece, reducing the difficulty of forming the blade 200 and improving the structural strength of the blade 200, thereby improving the position stability of the cutting portion 230 and ensuring the cutting effect of the cutting portion 230.

[0069] In some embodiments, in combination Figure 4 and Figure 8 As shown, the cutting portion 230 is arranged on the side of the main body 220 facing the workpiece and extends along the circumference of the main body 220. The projection of the upper surface of the cutting portion 230 on the first plane is not lower than the projection of the central axis of the main body 220 on the first plane. The first plane is a plane parallel to the axial direction of the cutting tool 1000 and perpendicular to the upper surface of the cutting portion 230. Therefore, in the up and down direction of the cutting tool 1000, the height of the cutting edge on the cutting portion 230 is not lower than the central axis of the cutting tool 1000. Since the cutting edge on the cutting portion 230 contacts the workpiece first during the process of machining the workpiece, the above arrangement can greatly alleviate the cutting force of the workpiece on the cutting edge of the cutting portion 230, making it difficult for the cutting edge to break, thereby extending the life of the blade 200.

[0070] In some embodiments, Figure 8 As shown, the projection height of the cutting portion 230 on the first plane is H1, and the distance between the projection of the central axis of the main body 220 on the first plane and the bottom of the main body 220 is H2, H1≥H2, so that the projection of the upper surface of the cutting portion 230 on the first plane is not lower than the projection of the central axis of the main body 220 on the first plane. Because the cutting portion 230 mainly processes oil grooves and water grooves on the surface of parts such as shafts and disks, the above-mentioned arrangement can ensure that when the cutting portion 230 processes the workpiece, there is a smaller workpiece on the cutting portion 230, which reduces the pressure of the workpiece on the cutting edge of the cutting portion 230, makes the cutting edge less likely to break, and thereby extends the service life of the blade 200.

[0071] In some embodiments, in combination Fig. 9 , Fig.10 and Fig.11 As shown, in the protruding direction of the cutting portion 230, the cutting portion 230 includes a first end 231 and a second end 232 that are arranged oppositely, the first end 231 is connected to the main body 220, and in the axial direction of the cutting tool 1000, the width of the first end 231 is smaller than the width of the second end 232, so that the cutting portion 230 extends obliquely in the protruding direction of the cutting portion 230 toward the side wall of the cutter body 100. It can be understood here that in the radial direction of the blade 200, the cutting portion 230 includes a first end 231 and a second end 232 that are arranged oppositely, and the first end 231 is connected to the main body 220 to achieve the matching connection between the cutting portion 230 and the main body 220, thereby reducing the difficulty of the matching connection between the cutting portion 230 and the main body 220.

[0072] At the same time, by setting the width of the first end 231 to be smaller than the width of the second end 232, after the first end 231 and the second end 232 are matched and connected, the cutting portion 230 can be extended obliquely toward the side wall of the cutter body 100 in the protruding direction of the cutting portion 230. Specifically, in the protruding direction of the cutting portion 230, the cutting portion 230 is extended obliquely toward the side wall of the cutter body 100 in the direction close to the cutter body 100. When processing a workpiece, the second end 232 of the cutting portion 230 first contacts the workpiece and is pressed on the workpiece. A groove having the same width as the second end 232 is machined, and then the workpiece moves toward the cutting portion 230, and the cutting portion 230 machines a groove of a specific depth on the workpiece. By arranging the side wall of the cutting portion 230 toward the cutter body 100 to extend obliquely toward the cutter body 100, it is possible to avoid that when the workpiece moves toward the cutting portion 230, the side wall of the cutting portion 230 toward the cutter body 100 contacts the side wall of the groove machined on the workpiece, thereby reducing the contact area between the cutting portion 230 and the workpiece, reducing wear, and extending the service life of the cutting portion 230.

[0073] In some embodiments, Fig.11 As shown, the distance between the second end 232 of the cutting portion 230 and the central axis of the cutting tool 1000 is H3, and the radial dimension of the main body 220 is H4, H3>H4, so that when the cutting portion 230 is arranged on the radial outer side of the main body 220, it can protrude from the main body 220, making it easier to use the cutting portion 230 to process the workpiece.

[0074] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] Figure 5 Five limiting grooves 422 are shown for illustrative purposes, but after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to a technical solution with one, two, three or other numbers of limiting grooves 422, which also falls within the scope of protection of the present invention.

[0076] Other components of the cutting tool 1000 according to the embodiment of the present invention, such as the specific structure of the fastener 300, are known to those skilled in the art and will not be described in detail here.

[0077] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cutting tool, characterized in that: include: A tool body (100) and a blade (200), wherein the tool body (100) and the blade (200) are detachably connected via a fastener (300), and the fastener (300) is used to limit the relative displacement of the blade (200) and the tool body (100) in the axial direction of the cutting tool; A limiting assembly (400) is provided between the tool body (100) and the blade (200), and the limiting assembly (400) is used to limit the relative displacement of the blade (200) and the tool body (100) in the circumferential and radial directions of the cutting tool.

2. The cutting tool according to claim 1, characterized in that The blade (200) is disposed at one axial end of the blade body (100) and is abutted against an axial end of the blade body (100); the fastener (300) is passed through the blade (200) and is fixedly connected to the blade body (100).

3. The cutting tool according to claim 1, characterized in that The limiting assembly (400) comprises a first limiting member (410) and a second limiting member (420), wherein the first limiting member (410) is used to limit the relative displacement of the blade (200) and the tool body (100) in the radial direction of the cutting tool, and the second limiting member (420) is used to limit the relative displacement of the blade (200) and the tool body (100) in the circumferential direction of the cutting tool.

4. The cutting tool according to claim 3, characterized in that The first limiting member (410) comprises a convex portion (411) and a concave portion (412); the outer surface of the convex portion (411) is formed as a convex spherical surface, and the outer surface of the concave portion (412) is formed as a concave spherical surface; the convex portion (411) can be limitedly fitted in the concave portion (412); one of the convex portion (411) and the concave portion (412) is provided on the blade (200), and the other is provided on the blade body (100).

5. The cutting tool according to claim 4, characterized in that The convex portion (411) is provided at one end of the blade (200) facing the blade body (100), and the concave portion (412) is provided at one end of the blade body (100) facing the blade (200); In the radial direction of the cutting tool, the maximum size of the blade (200) is greater than the maximum size of the protrusion (411), so as to form a first mating surface (210) on the blade (200) surrounding the periphery of the protrusion (411); the maximum size of the tool body (100) is greater than the maximum size of the recess (412), so as to form a second mating surface (110) on the tool body (100) surrounding the periphery of the recess (412); the first mating surface (210) and the second mating surface (110) are in abutment fit with each other.

6. The cutting tool according to claim 3, characterized in that The second limiting member (420) comprises a limiting rib (421) and a limiting groove (422) that cooperate with each other in limiting operation, wherein one of the limiting rib (421) and the limiting groove (422) is arranged on the blade (200), and the other is arranged on the tool body (100), and the limiting rib (421) and the limiting groove (422) extend in the radial direction of the cutting tool.

7. The cutting tool according to claim 6, characterized in that The limiting ribs (421) and the limiting grooves (422) include a plurality of limiting ribs (421) corresponding one to one with the limiting grooves (422); the plurality of limiting ribs (421) are arranged at intervals along the circumference of the cutting tool, and the distance between two adjacent limiting ribs (421) is the same.

8. The cutting tool according to any one of claims 1 to 7, characterized in that The blade (200) comprises a main body (220) and a cutting part (230); the main body (220) is cooperatively connected to the blade body (100); the cutting part (230) is arranged radially outside the main body (220) and protrudes from the main body (220); and the cutting part (230) is suitable for machining a workpiece.

9. The cutting tool according to claim 8, characterized in that The cutting portion (230) is arranged on a side of the main body (220) facing the workpiece and extends along the circumference of the main body (220); the projection of the upper surface of the cutting portion (230) on a first plane is not lower than the projection of the central axis of the main body (220) on the first plane; the first plane is a plane parallel to the axial direction of the cutting tool and perpendicular to the upper surface of the cutting portion (230).

10. The cutting tool according to claim 8, characterized in that In the protruding direction of the cutting portion (230), the cutting portion (230) comprises a first end (231) and a second end (232) which are arranged opposite to each other, the first end (231) being connected to the main body (220), and in the axial direction of the cutting tool, the width of the first end (231) is smaller than the width of the second end (232), so that the cutting portion (230) extends obliquely in the protruding direction of the cutting portion (230) toward the side wall of the tool body (100).

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