Turning tool for axial heavy cutting of workpiece

Abstract

The turning tool is applied to workpiece machining and comprises a tool bar and a tool, the tool is arranged at the end of the extension direction of the tool bar and comprises a first tool grain and a second tool grain, and the first tool grain and the second tool grain are arranged in the extension direction of the tool bar. The tool nose of the first tool grain and the tool nose of the second tool grain have a height difference in the vertical direction, the tool nose of the second tool grain is higher than the tool nose of the first tool grain, in the cutting process, the first tool grain conducts rough machining on the axial end face of a workpiece to remove most materials, and then the second tool grain conducts finish machining on the workpiece to remove most materials; and the processing time is obviously reduced. The rough machining and the finish machining can be continuously carried out without replacing a cutter or adjusting cutting parameters, so that the operation complexity is reduced, and the overall machining efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of turning tools, and in particular to a turning tool for heavy axial cutting of a workpiece. Background Art

[0002] A turning tool is a cutting tool used on a lathe, mainly used for machining metal workpieces. The turning tool cuts away metal material layer by layer through the high-speed rotating workpiece in contact with the cutting edge fixed on the tool holder, so that the workpiece reaches the required size and surface finish. The main function of the turning tool is to perform rough machining and fine machining, and to achieve efficient and high-precision machining by adjusting the cutting parameters.

[0003] The turning tool in the prior art usually has only one blade, which is fixed on the tool holder through a tool handle. During the turning process, the blade moves along the radial direction of the workpiece to remove the axial end surface of the workpiece. However, the turning tool with a single blade has certain limitations in terms of processing efficiency, especially the conversion between roughing and finishing requires extra time. In order to improve the processing efficiency, it is usually necessary to replace the tool or readjust the cutting parameters, which not only increases the complexity of the operation, but also prolongs the processing cycle.

[0004] Therefore, it is necessary to propose a turning tool for heavy axial cutting of workpieces to solve the problems of long processing time, complex operation and low processing efficiency of existing turning tools. Utility Model Content

[0005] The purpose of this application is to overcome the deficiencies in the prior art and to propose a turning tool for heavy axial cutting of workpieces, thereby solving the problems of long processing time, complex operation and low processing efficiency of the prior turning tools.

[0006] This application is implemented through the following technical solutions:

[0007] The present application proposes a turning tool for axial heavy cutting of a workpiece, which is applied to workpiece processing and includes a tool rod and a tool. The tool is arranged at the end of the tool rod in the extension direction. The tool includes a first tool particle and a second tool particle. The first tool particle and the second tool particle are arranged along the extension direction of the tool rod. There is a height difference between the tip of the first tool particle and the tip of the second tool particle in the vertical direction, and the tip position of the second tool particle is higher than the tip position of the first tool particle, so that during the cutting process, the first tool particle first rough-processes the axial end face of the workpiece, and the second tool particle then fine-processes the workpiece.

[0008] In one embodiment of the present application, the knife rod is provided with a first side surface, the first side surface is in the same extension direction as the knife rod, and when observed from the direction of the first knife particle toward the knife rod, the tip of the first knife particle extends out of the first side surface.

[0009] In one embodiment of the present application, the knife rod is provided with a second side surface parallel to the first side surface, and the first side surface is located on the inner side of the knife rod, and the second side surface is located on the outer side of the knife rod, one side of the second knife particle is the first side surface, and the other side is the second side surface, and when observed along the direction of the first knife particle or the second knife particle toward the knife rod, the tip of the second knife particle extends out of the second side surface.

[0010] In one embodiment of the present application, the first knife grain and the second knife grain are both triangular in shape, and a first fixing groove adapted to the first knife grain and a second fixing groove adapted to the second knife grain are provided in the extension direction of the knife rod. The first fixing groove is provided at the end of the extension direction of the knife rod, the first knife grain is fixed in the first fixing groove, and the second knife grain is fixed in the second fixing groove.

[0011] In one embodiment of the present application, the first blade particle and the second blade particle are both provided with a first edge, a second edge and a third edge, one end of the first edge is connected to the second edge, the other end is connected to the third edge, and the end of the second edge away from the first edge is connected to the third edge, forming an equilateral triangle;

[0012] The first edge of the first knife particle extends out of the end of the knife rod, the knife rod is provided with a first side wall and a second side wall at the first fixing groove, the second edge of the first knife particle is in contact with the first side wall, and the third edge of the first knife particle is in contact with the second side wall;

[0013] A connection between the first edge and the third edge of the first knife particle extends out of the first fixing groove.

[0014] In one embodiment of the present application, the knife bar is provided with a third side wall, a fourth side wall and a fifth side wall at the second fixing groove, the first edge of the second knife particle is in contact with the third side wall, the second edge of the first knife particle is in contact with the fourth side wall, and the third edge of the first knife particle is in contact with the fifth side wall;

[0015] A connection between the first edge and the third edge of the second blade particle extends out of the second fixing groove.

[0016] In one embodiment of the present application, a height difference between the tip of the first blade particle and the tip of the second blade particle in the vertical direction is h.

[0017] In one embodiment of the present application, the main rake angles of the tool tip of the first tool particle and the tool tip of the second tool particle are both 30°.

[0018] In one embodiment of the present application, the knife rod is provided with a first fixing hole connected to the first fixing groove, the first knife particle is provided with a first through hole, and the knife includes a first fixing column, which passes through the first through hole and is fixedly connected to the first fixing hole.

[0019] In one embodiment of the present application, the tool rod is provided with a first positioning groove and a first positioning hole connected to the first positioning groove, and the tool includes a first positioning member and a first fastener, the first positioning member is clamped in the first positioning groove and fits with the first tool particle, and the first fastener passes through the first positioning member and is threadedly connected to the first positioning hole.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The tool includes a first knife particle and a second knife particle, which are arranged along the extension direction of the tool bar. The tip of the first knife particle and the tip of the second knife particle have a height difference in the vertical direction, and the tip of the second knife particle is higher than the tip of the first knife particle. During the cutting process, the first knife particle first performs rough machining on the axial end face of the workpiece to remove most of the material, and then the second knife particle performs fine machining on the workpiece, which significantly reduces the machining time. Rough machining and fine machining can be performed continuously without changing the tool or adjusting the cutting parameters, which reduces the complexity of the operation and improves the overall machining efficiency.

[0022] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A three-dimensional diagram of a turning tool for axial heavy cutting of a workpiece provided in one embodiment of the present application;

[0025] Figure 2 An exploded perspective view of a turning tool for axial heavy cutting of a workpiece provided in one embodiment of the present application;

[0026] Figure 3 A three-dimensional diagram of a first blade particle provided in an embodiment of the present application;

[0027] Figure 4 A top view of a turning tool for axial heavy cutting of a workpiece provided in one embodiment of the present application;

[0028] Figure 5 A top view of a knife bar provided in one embodiment of the present application.

[0029] Description of reference numerals:

[0030] 10. A turning tool for axial heavy cutting of a workpiece; 100. A tool bar; 111. A first side surface; 112. A first fixing groove; 1121. A first side wall; 1122. A second side wall; 1123. A first fixing hole; 113. A first positioning groove; 1131. A first positioning hole; 121. A second side surface; 122. A second fixing groove; 1221. A third side wall; 1222. A fourth side wall; 1223. A fifth side wall; 1224. A second fixing hole; 123. A second positioning groove; 1231. A second positioning hole; 200. A tool; 211. A first knife particle; 2111. A first through hole; 212. A first fixing column; 213. A first positioning member; 214. A first fastener; 221. A second knife particle; 222. A second fixing column; 223. A second positioning member; 224. A second fastener; a. A first edge; b. A second edge; c. A third edge. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0033] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0034] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0036] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0037] Please refer to Figures 1 to 5 The present application proposes a turning tool 10 for heavy axial cutting of a workpiece, which is applied to workpiece processing and includes a tool bar 100 and a tool 200. The tool 200 is arranged at the end of the tool bar 100 in the extension direction, and is characterized in that the tool 200 includes a first knife grain 211 and a second knife grain 221. The first knife grain 211 and the second knife grain 221 are arranged along the extension direction of the tool bar 100. There is a height difference between the tip of the first knife grain 211 and the tip of the second knife grain 221 in the vertical direction, and the tip position of the second knife grain 221 is higher than the tip position of the first knife grain 211, so that during the cutting process, the first knife grain 211 first rough-processes the axial end face of the workpiece, and the second knife grain 221 then fine-processes the workpiece.

[0038] Specifically, the first blade grain 211 and the second blade grain 221 are arranged along the extension direction of the blade rod 100, and the blade tip of the first blade grain 211 and the blade tip of the second blade grain 221 have a height difference in the vertical direction, and the blade tip position of the second blade grain 221 is higher than the blade tip position of the first blade grain 211. During the cutting process, the first blade grain 211 first performs rough machining on the axial end face of the workpiece to remove most of the material, and then the second blade grain 221 performs fine machining on the workpiece, which significantly reduces the machining time. Rough machining and fine machining can be performed continuously without changing the tool 200 or adjusting the cutting parameters, which reduces the complexity of the operation and improves the overall machining efficiency.

[0039] It should be understood that the turning tool in the prior art usually has only one blade, which is fixed on the tool holder through a tool handle. During the turning process, the blade moves along the radial direction of the workpiece to remove the axial end surface of the workpiece. However, the turning tool with a single blade has certain limitations in terms of processing efficiency, especially the conversion between rough machining and fine machining requires additional time. In order to improve the processing efficiency, it is usually necessary to replace the tool 200 or readjust the cutting parameters, which not only increases the complexity of the operation, but also prolongs the processing cycle. In the present application, the first blade 211 and the second blade 221 are arranged along the extension direction of the tool rod 100, and the tip of the first blade 211 and the tip of the second blade 221 have a height difference in the vertical direction, and the tip position of the second blade 221 is higher than the tip position of the first blade 211, which solves the shortcomings of the single blade turning tool in the prior art in terms of processing efficiency and quality. By combining rough machining and fine machining into one cutting process, the conversion time of the workpiece between different processing steps is reduced. In addition, this design ensures the continuity and stability of the cutting process by optimizing the arrangement and height difference of the tool particles, improving the final quality of the workpiece.

[0040] Please refer to Figure 2 In one embodiment, the knife bar 100 is provided with a first side surface 111 , and the first side surface 111 is in the same extension direction as the knife bar 100 . When viewed from the direction of the first knife particle 211 toward the knife bar 100 , the tip of the first knife particle 211 extends out of the first side surface 111 .

[0041] Specifically, when viewed from the direction of the first blade particle 211 toward the blade rod 100, the blade tip of the first blade particle 211 extends out of the first side surface 111. This ensures that the blade tip of the first blade particle 211 can fully contact the workpiece during the cutting process, providing effective cutting force.

[0042] Please refer to Figure 2In one embodiment, the knife bar 100 is provided with a second side surface 121 parallel to the first side surface 111, and the first side surface 111 is located on the inner side of the knife bar 100, and the second side surface 121 is located on the outer side of the knife bar 100, one side of the second knife particle 221 is the first side surface 111, and the other side is the second side surface 121, and when observed from the direction of the first knife particle 211 or the second knife particle 221 toward the knife bar 100, the tip of the second knife particle 221 extends out of the second side surface 121.

[0043] Specifically, the first side surface 111 is parallel to the second side surface 121, ensuring that the second blade grain 221 can perform cutting at the best position. When viewed from the direction of the first blade grain 211 or the second blade grain 221 toward the tool bar 100, the tip of the second blade grain 221 extends out of the second side surface 121. In this way, the tip of the second blade grain 221 can effectively contact the workpiece. The tip of the second blade grain 221 extends out of the second side surface 121, ensuring that after rough machining, the finishing blade grain can fully contact the workpiece surface, thereby optimizing the cutting process and improving the surface quality and machining efficiency of the workpiece.

[0044] Please refer to Figures 2 to 4 In one embodiment, the first blade particle 211 and the second blade particle 221 are both triangular in shape, and a first fixed groove 112 adapted to the first blade particle 211 and a second fixed groove 122 adapted to the second blade particle 221 are provided in the extension direction of the blade rod 100. The first fixed groove 112 is arranged at the end of the extension direction of the blade rod 100, the first blade particle 211 is fixed in the first fixed groove 112, and the second blade particle 221 is fixed in the second fixed groove 122.

[0045] Specifically, the first fixed groove 112 is disposed at the end portion in the extension direction of the tool bar 100, and the first blade 211 is fixedly disposed in the first fixed groove 112, so that the first blade 211 can be firmly fixed in the first fixed groove 112. The second blade 221 is fixedly disposed in the second fixed groove 122, so that the second blade 221 can be firmly fixed in the second fixed groove 122. The end portion of the first fixed groove 112 disposed in the extension direction of the tool bar 100 is arranged so that the first blade 211 can firstly rough-process the axial end surface of the workpiece.

[0046] Please refer to Figure 3In one embodiment, the first blade particle 211 and the second blade particle 221 are both provided with a first edge a, a second edge b and a third edge c, one end of the first edge a is connected to the second edge b, and the other end is connected to the third edge c, and the end of the second edge b away from the first edge a is connected to the third edge c, forming an equilateral triangle; the first edge a of the first blade particle 211 extends out of the end of the knife rod 100, and the knife rod 100 is provided with a first side wall 1121 and a second side wall 1122 at the first fixing groove 112, the second edge b of the first blade particle 211 is in contact with the first side wall 1121, and the third edge c of the first blade particle 211 is in contact with the second side wall 1122; the connection between the first edge a and the third edge c of the first blade particle 211 extends out of the first fixing groove 112.

[0047] Specifically, the first edge a of the first blade particle 211 extends out of the end of the blade rod 100, and the first edge a and the third edge c of the first blade particle 211 extend out of the first fixing groove 112, ensuring that the tip of the first blade particle 211 fully contacts the workpiece during the cutting process, providing effective cutting force and improving the cutting effect. The second edge b of the first blade particle 211 fits with the first side wall 1121, and the third edge c of the first blade particle 211 fits with the second side wall 1122, which can provide stable support, so that the first blade particle 211 remains stable during the cutting process, reducing the possibility of vibration and looseness, thereby improving cutting stability and precision.

[0048] Please refer to Figure 5 In one embodiment, the knife rod 100 is provided with a third side wall 1221, a fourth side wall 1222 and a fifth side wall 1223 at the second fixed groove 122, the first edge a of the second knife grain 221 is in contact with the third side wall 1221, the second edge b of the first knife grain 211 is in contact with the fourth side wall 1222, and the third edge c of the first knife grain 211 is in contact with the fifth side wall 1223; the first edge a and the third edge c of the second knife grain 221 extend out of the second fixed groove 122 at the connection point.

[0049] Specifically, the second fixing groove 122 is extended from the connection between the first edge a and the third edge c of the second blade particle 221, ensuring that the tip of the second blade particle 221 fully contacts the workpiece during the cutting process, providing effective cutting force and improving the cutting effect. The first edge a of the second blade particle 221 is in contact with the third side wall 1221, the second edge b of the first blade particle 211 is in contact with the fourth side wall 1222, and the third edge c of the first blade particle 211 is in contact with the fifth side wall 1223, so as to provide stable support, so that the second blade particle 221 remains stable during the cutting process, reducing the possibility of vibration and looseness, thereby improving cutting stability and precision.

[0050] It is worth noting that there is a knife tip at the connection between the first edge a and the second edge b, or at the connection between the first edge a and the third edge c, or at the connection between the third edge c and the second edge b.

[0051] Please refer to Figure 4 In one embodiment, the height difference between the tip of the first blade particle 211 and the tip of the second blade particle 221 in the vertical direction is h.

[0052] Specifically, h=0.1-1 mm, the tip of the first blade 211 is lower than the tip of the second blade 221, so that during the cutting process, the first blade 211 first contacts and cuts the axial end face of the workpiece for rough machining; then the second blade 221 contacts and cuts the axial end face of the workpiece for fine machining. This ensures that rough machining and fine machining can be performed continuously without replacing the tool 200 or adjusting cutting parameters.

[0053] Please refer to Figure 1 and Figure 4 In one embodiment, the main rake angles of the tool tips of the first tool grain 211 and the second tool grain 221 are both 30°.

[0054] Specifically, the main deflection angle refers to the angle between the main cutting edge at the front end of the blade tip and the cutting direction of the workpiece surface. The blade tips of the first blade grain 211 and the second blade grain 221 are both processed with a main deflection angle of 30°, which can provide better cutting effect and surface finish. In addition, a smaller main deflection angle helps reduce cutting resistance, making the cutting process smoother and more efficient.

[0055] It should be noted that the turning tool 10 of the present application for heavy axial cutting of a workpiece, since the tool 200 has a first cutting grain 211 and a second cutting grain 221, and the first cutting grain 211 and the second cutting grain 221 are arranged along the extension direction of the tool rod 100, it can only perform double cutting on the axial end face of the workpiece, that is, axial cutting of the workpiece, and cannot perform double cutting on the circumferential outer cylindrical surface of the workpiece.

[0056] Please refer to Figure 2 and Figure 5 In one embodiment, the knife bar 100 is provided with a first fixing hole 1123 communicating with the first fixing groove 112, the first knife grain 211 is provided with a first through hole 2111, and the knife 200 includes a first fixing column 212, and the first fixing column 212 passes through the first through hole 2111 and is fixedly connected to the first fixing hole 1123. The knife bar 100 is provided with a second fixing hole 1224 communicating with the second fixing groove 122, the second knife grain 221 is provided with a second through hole (not marked in the figure), and the knife 200 includes a second fixing column 222, and the second fixing column 222 passes through the second through hole and is fixedly connected to the second fixing hole 1224.

[0057] Specifically, the first fixing column 212 passes through the first through hole 2111 and is fixedly connected to the first fixing hole 1123, and the second fixing column 222 passes through the second through hole and is fixedly connected to the second fixing hole 1224, which is used to prevent the first knife particle 211 and the second knife particle 221 from loosening or shifting during the cutting process, thereby improving the stability and safety of the processing.

[0058] Please refer to Figure 2 and Figure 5 In one embodiment, the tool rod 100 is provided with a first positioning groove 113 and a first positioning hole 1131 connected to the first positioning groove 113, and the tool 200 includes a first positioning member 213 and a first fastener 214. The first positioning member 213 is clamped in the first positioning groove 113 and fits with the first knife grain 211, and the first fastener 214 passes through the first positioning member 213 and is threadedly connected to the first positioning hole 1131; the tool rod 100 is provided with a second positioning groove 123 and a second positioning hole 1231 connected to the second positioning groove 123, and the tool 200 includes a second positioning member 223 and a second fastener 224. The second positioning member 223 is clamped in the second positioning groove 123 and fits with the second knife grain 221, and the second fastener 224 passes through the second positioning member 223 and is threadedly connected to the second positioning hole 1231.

[0059] Specifically, the first fastener 214 and the second fastener 224 are both bolts, the first positioning member 213 is clamped in the first positioning groove 113 and fits with the first blade 211, the first fastener 214 passes through the first positioning member 213 and is threadedly connected to the first positioning hole 1131, ensuring the stability of the first blade 211 during the cutting process and preventing the first blade 211 from shifting or loosening. Similarly, the second positioning member 223 is clamped in the second positioning groove 123 and fits with the second blade 221, the second fastener 224 passes through the second positioning member 223 and is threadedly connected to the second positioning hole 1231, ensuring the stability of the second blade 221 during the cutting process and preventing the second blade 221 from shifting or loosening.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A turning tool for heavy axial cutting of a workpiece, applied to workpiece processing, comprising a tool bar and a tool, wherein the tool is arranged at the end of the tool bar in the extending direction, characterized in that: The tool includes a first blade particle and a second blade particle, the first blade particle and the second blade particle are arranged along the extension direction of the tool rod, the blade tip of the first blade particle and the blade tip of the second blade particle have a height difference in the vertical direction, and the blade tip position of the second blade particle is higher than the blade tip position of the first blade particle, so that during the cutting process, the first blade particle first rough-processes the axial end face of the workpiece, and the second blade particle then fine-processes the workpiece.

2. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The knife bar is provided with a first side surface, the first side surface is in the same extension direction as the knife bar, and when viewed from the direction of the first knife particle toward the knife bar, the tip of the first knife particle extends out of the first side surface.

3. The turning tool for heavy axial cutting of a workpiece according to claim 2, characterized in that: The knife bar is provided with a second side surface parallel to the first side surface, and the first side surface is located on the inner side of the knife bar, and the second side surface is located on the outer side of the knife bar, one side of the second knife particle is the first side surface, and the other side is the second side surface, and when observed from the direction of the first knife particle or the second knife particle toward the knife bar, the tip of the second knife particle extends out of the second side surface.

4. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The first knife grain and the second knife grain are both triangular in shape. A first fixing groove adapted to the first knife grain and a second fixing groove adapted to the second knife grain are provided in the extending direction of the knife rod. The first fixing groove is provided at the end of the extending direction of the knife rod. The first knife grain is fixed in the first fixing groove, and the second knife grain is fixed in the second fixing groove.

5. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The first blade particle and the second blade particle are both provided with a first edge, a second edge and a third edge, one end of the first edge is connected to the second edge, the other end is connected to the third edge, and the end of the second edge away from the first edge is connected to the third edge to form an equilateral triangle; The first edge of the first knife particle extends out of the end of the knife rod, the knife rod is provided with a first side wall and a second side wall at the first fixing groove, the second edge of the first knife particle is in contact with the first side wall, and the third edge of the first knife particle is in contact with the second side wall; A connection between the first edge and the third edge of the first knife particle extends out of the first fixing groove.

6. The turning tool for heavy axial cutting of a workpiece according to claim 5, characterized in that: The knife bar is provided with a third side wall, a fourth side wall and a fifth side wall at the second fixing groove, the first edge of the second knife particle is in contact with the third side wall, the second edge of the first knife particle is in contact with the fourth side wall, and the third edge of the first knife particle is in contact with the fifth side wall; A connection between the first edge and the third edge of the second blade particle extends out of the second fixing groove.

7. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The height difference between the tip of the first blade particle and the tip of the second blade particle in the vertical direction is h.

8. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The main deflection angles of the tool tips of the first tool grain and the second tool grain are both 30°.

9. The turning tool for heavy axial cutting of a workpiece according to claim 4, characterized in that: The knife rod is provided with a first fixing hole connected with the first fixing groove, the first knife particle is provided with a first through hole, and the knife comprises a first fixing column, which passes through the first through hole and is fixedly connected with the first fixing hole.

10. The turning tool for heavy axial cutting of a workpiece according to claim 1, characterized in that: The tool rod is provided with a first positioning groove and a first positioning hole connected with the first positioning groove. The tool includes a first positioning piece and a first fastener. The first positioning piece is clamped in the first positioning groove and fits with the first tool particle. The first fastener passes through the first positioning piece and is threadedly connected with the first positioning hole.

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