Diamond circular saw blade for machining titanium alloy

Abstract

A diamond circular saw blade for machining titanium alloy comprises a main body; the protruding structures are evenly distributed on the circumferential contour of the main body, each protruding structure comprises a first protruding piece and a second protruding piece, the first protruding pieces and the second protruding pieces are sequentially arranged on the main body in the circumferential direction, and a sunken tooth holder is formed between the first protruding pieces and the second protruding pieces; chip separating grooves are formed in the tops of the saw teeth, the chip separating grooves in the adjacent saw teeth do not intersect on the cutting face, and openings in the two sides of each chip separating groove are formed in the front tooth face and the rear tooth face of the corresponding saw tooth respectively. One ends of the sawteeth are arranged in the sunken tooth holder, and the other ends of the sawteeth extend out of the sunken tooth holder far away from the center of the main body. The chip dividing grooves which are not intersected on the cutting face are formed in the different sawteeth, the cutting amount of each sawtooth is reduced, and therefore the cutting force is reduced, the heat dissipation area of the sawteeth is increased, the cutting temperature is reduced, the too high temperature is avoided, the chip cutting quality of the cutting face is guaranteed, the cutting stability is improved, and the service life of the sawteeth is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of metal cutting, and particularly to a diamond circular saw blade for machining titanium alloys. Background Art

[0002] In the field of modern manufacturing, high-performance materials have increasingly attracted people's attention. Therefore, titanium alloys with high strength, low density, strong anti-fatigue performance, excellent corrosion resistance, good high-temperature resistance, and biocompatibility have gradually been taken seriously. As a new type of metal material, titanium alloys have been widely used in many industrial fields such as aerospace, shipbuilding, medical, and automotive. Especially in the aerospace and medical device fields where extremely high material performance requirements are imposed, titanium alloys have become irreplaceable key materials due to their excellent performance.

[0003] However, while the high performance of titanium alloy materials is an advantage, it also causes some machining problems. For example: ① Titanium alloy belongs to metal materials, and a large amount of cutting heat will be generated during the cutting process. The relatively high cutting temperature is likely to cause adverse phenomena such as tool sticking, saw path burn marks, and hardening, affecting the surface quality. ② Titanium alloy is a high-toughness material, and continuous chips will be generated during the cutting process, leading to poor chip evacuation, chip accumulation in the tooth grooves and other adverse phenomena, affecting the surface quality. In addition, during the cutting process, the continuous chips are likely to collide with the saw teeth a second time, resulting in accelerated breakage of the saw teeth and affecting the surface quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a diamond circular saw blade for machining titanium alloys, to avoid high temperatures during the process of the saw blade cutting titanium alloy materials, and to prevent adverse phenomena such as saw path burn marks and tool sticking from occurring, improve the machining surface quality, and extend the tool life, so as to solve the existing technical defects and unmet technical requirements.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A diamond circular saw blade for machining titanium alloys, comprising:

[0006] A main body, on which a shaft hole and an assembly hole are provided. The shaft hole is opened at the center position of the axial end face of the main body, and the assembly hole is circumferentially arranged around the shaft hole;

[0007] A protruding structure, and a plurality of protruding structures are evenly distributed on the circumferential contour of the main body. The synaptic structure includes a first protruding member and a second protruding member, and the first protruding member and the second protruding member are sequentially circumferentially arranged on the main body, and an embedded tooth seat is formed between the two;

[0008] Sawteeth, a chip-breaking groove is started to be opened at the top of the sawteeth, and the chip-breaking grooves on the adjacent sawteeth do not intersect on the cutting surface. The two side openings of the chip-breaking groove are respectively opened on the front tooth surface and the rear tooth surface of the sawteeth, and the axial cross-section of the sawteeth is a quasi-parallelogram;

[0009] One end of the sawteeth is arranged in the recessed tooth seat, and the other end extends away from the center of the main body to the outside of the recessed tooth seat.

[0010] In this application, it should be noted that for the meaning of "and the chip evacuation grooves on the adjacent sawteeth do not intersect on the cutting surface" described in the text, it can be understood that when the sawteeth rotate to chip the target workpiece, the chip-breaking grooves on the sawteeth have corresponding positions on the cutting surface formed on the target workpiece. Among the adjacent sawteeth, when the rear sawteeth cut, the corresponding position of the chip-breaking groove on the rear sawteeth does not overlap or intersect with the corresponding position of the chip-breaking groove on the prior sawteeth.

[0011] In addition, the number of chip-breaking grooves on the sawteeth is not clearly disclosed in this application. Therefore, this application includes: the number of chip-breaking grooves on adjacent sawteeth is the same, the number of chip-breaking grooves on adjacent sawteeth is different, and the above two situations exist in different areas of the sawteeth on the entire main body at the same time, and at least one chip-breaking groove is provided on the sawteeth.

[0012] Moreover, in the terms "axial direction" and "radial direction" in this application, the axis refers to the length direction where the rotating shaft for installing the main body is located during processing, and the radial direction is also the radius extension direction of this axis. If the shape of the axis at the connection with the main body is not circular, it can also be equivalent to the radius direction of the circle where the circular main body is located, including the direction close to the center of the circle and the direction away from the center of the circle.

[0013] Among them, for the "parallelogram" sawteeth, the included angle between its front tooth surface and its top surface is a smaller included angle - an acute angle. The recessed tooth seat can be understood as an installation groove for installing the sawteeth, and recessed can be understood as concave. The shaft hole, although in the prior art it refers to the fit between the shaft and the hole, in this application it refers to the hole for fitting and installing with the shaft.

[0014] Preferably, the width of the chip-breaking groove is 10% - 25% of the width of the sawteeth;

[0015] The depth of the chip-breaking groove is 10% - 15% of the length of the sawteeth;

[0016] The minimum distance between the chip-breaking groove and the axial end face of the sawteeth is 15% of the width of the sawteeth 30;

[0017] The minimum distance between each chip-breaking groove is 20% of the width of the sawteeth.

[0018] It should be noted in this application that the width refers to the axial length, and the depth refers to the radial length.

[0019] Preferably, a chip discharge groove is provided on one side of the first protruding member away from the recessed tooth seat, a chip breaking groove is provided at the top of the first protruding member, and the recessed tooth seat is communicated with the chip discharge groove through the chip breaking groove.

[0020] In the present application, it can be understood that on the circumferential profile of the main body, they are arranged in the following order: a chip discharge groove, a first protruding member with a chip breaking groove at the top, a recessed tooth seat, and a second protruding member, and the above content is taken as a group, and each group is arranged end to end on the circumferential profile of the main body, that is, the chip discharge groove of the latter group is located between the first protruding member of the group where this chip discharge groove is located and the second protruding member of the previous group.

[0021] Preferably, the protruding distance of the first protruding member on the main body is less than the protruding distance of the second protruding member on the main body;

[0022] One end of the chip breaking groove is communicated with the recessed tooth seat, and the other end extends obliquely in the form of an arc towards the direction close to the inside of the main body to one side of the chip discharge groove;

[0023] The distance from the bottom of the chip discharge groove to the center of the main body is less than the distance from the bottom of the recessed tooth seat to the center of the main body.

[0024] In the present application, it should be explained that: the "protruding" in the "protruding distance" refers to the radial direction, that is, this distance is the radial distance on each protruding member, and the content expressed by "circular arc" can be understood as that the radial cross-section of the chip breaking groove is circular arc.

[0025] Preferably, the recessed tooth seat includes:

[0026] A first positioning reference surface, one end of the first positioning reference surface is connected to the chip breaking groove, and the other end extends towards the inside of the main body. The first positioning reference surface is in close fit with the front tooth surface of the saw tooth;

[0027] In the present application, it should be noted that the definition of "inside" in the above "extending towards the inside of the main body" is: taking the outer circular contour of the main body as the boundary, the side of the boundary where the shaft hole is located is the inside, but it should be noted that the extending direction of the first positioning reference surface is not the radial direction, that is, the first positioning reference surface extends towards the inside of the main body along a non-radial direction.

[0028] A second positioning reference surface, one end of the second positioning reference surface is connected to the first positioning reference surface, and the other end is inclined away from the first reference surface towards the direction close to the center of the main body (here it is not the radial direction, here it is the extending direction of the straight line where the chord is located, and this chord is also one of the chords of the circle with the center of the main body as the center of the circle), serving as the bottom surface of the recessed tooth seat to be closely attached to the bottom surface of the saw tooth;

[0029] The joint surface, one end of the joint surface is connected to the second protruding member, and the other end extends towards the center of the holder body to the second positioning reference surface. The joint surface is parallel to the first positioning reference surface and faces the rear tooth surface of the sawtooth.

[0030] In this application, the machining accuracy of the first positioning precise surface and the second positioning precise surface is higher.

[0031] Preferably, there is a surplus space between the joint surface and the rear tooth surface of the sawtooth for accommodating the welding agent, and the width of the surplus space is 0.5 - 1 mm.

[0032] The width here refers to the distance between the joint surface and the rear tooth surface of the sawtooth.

[0033] Preferably, the sawtooth includes a cutting member and a joint member, and the cutting member is fixedly connected to the joint member;

[0034] The side of the cutting member away from the joint member serves as the front tooth surface of the sawtooth, and the cutting member is made of polycrystalline diamond material with a thickness of 0.3 - 0.6 mm;

[0035] The side of the joint member away from the cutting surface serves as the rear tooth surface of the sawtooth, and the joint member is made of cemented carbide with a thickness of 1 - 2 mm.

[0036] For a part of the sawtooth that protrudes into and recesses into the tooth seat, when corresponding to the front tooth surface of the sawtooth, the height by which the front tooth surface exceeds the first protruding member is 0.8 - 1.2 mm

[0037] Preferably, the chordal cross-section of the chip breaker groove is a quasi-equilateral trapezoid. The longer base of this trapezoid is located on the rear tooth surface, and the two base angles of this trapezoid are rounded, and the chip breaker groove is parallel to the rear tooth surface of the sawtooth.

[0038] In this application, the angle formed between the longer side and the side in the trapezoid is 85° - 89°, and at the bottom of the chip breaker groove, the intersection with the side groove walls on both sides of the chip breaker groove adopts a rounded transition, and the radius of these two rounded corners is 0.05 - 0.15 mm.

[0039] In addition, the explanation of the term "chordal direction" in this application is: the direction perpendicular to the first positioning reference surface. It can be understood that the chordal cross-section of the chip breaker groove is parallel to the first positioning reference surface.

[0040] Preferably, the connection between the first positioning reference surface and the chip breaker groove adopts a rounded transition;

[0041] At the connection between the first positioning reference surface and the second positioning reference surface, there is a circular groove protruding in the direction away from the center of the recessed tooth seat;

[0042] The connection between the second positioning reference surface and the joint surface adopts a rounded transition;

[0043] At the intersection of the rear tooth surface and the bottom surface of the saw tooth, a chamfer transition is adopted.

[0044] In this application, the radius range of the fillet and the radial cross-section of the circular groove is 0.1 - 0.5 mm. The sizes of the fillets can be different. The chamfer angle is 45°, and the chamfer depth is 0.1 - 0.3 mm.

[0045] Preferably, the rake angle range of the saw tooth is 5° - 15°, the clearance angle range of the saw tooth is 5° - 10°, and the range of the concave angle of the rear tooth surface of the saw tooth is 2° - 6°.

[0046] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0047] 1. In this application, by providing chip-splitting grooves that do not intersect on the cutting surface on different saw teeth, the length of the main cutting edge of the saw tooth can be reduced, the cutting amount of each saw tooth can be reduced, thereby reducing the cutting force, increasing the heat dissipation area of the saw tooth, reducing the cutting temperature, avoiding phenomena such as saw path burn marks and tool sticking caused by excessive temperature, ensuring the chip quality of the cutting surface, and the main cutting edge is truncated by the provided chip-splitting grooves, reducing the saw chip width, avoiding the generation of wide chips, avoiding the large load on the saw tooth caused by continuous cutting, improving the stability of cutting, and prolonging the service life of the saw tooth.

[0048] 2. This application is provided with a chip-breaking groove and a chip evacuation groove. By setting the chip-breaking groove, the saw chip is truncated, the length of the saw chip is reduced, forming a C-shaped chip, avoiding the generation of long saw chips, so that the saw chips fall into the chip evacuation groove in a smaller volume, and the setting of the chip evacuation groove also adapts to the saw chips with a certain arc, that is, the bottom of the chip evacuation groove is also arc-shaped, which can be adapted to the outer surface of the bottom layer of saw chips in the chip evacuation groove, preventing a large amount of saw chips from accumulating, facilitating the discharge of saw chips, and avoiding the phenomenon that the machining quality is affected by poor chip evacuation and chip accumulation in the tooth groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0050] Figure 2 It is a partial structure schematic diagram of the saw tooth of the present invention installed on the main body;

[0051] Figure 3 It is a structure schematic diagram of the protruding structure on the main body of the present invention;

[0052] Figure 4 It is a partial structure schematic diagram of the axial angle of the saw tooth of the present invention installed on the main body;

[0053] Figure 5 It is a structure schematic diagram of the saw tooth of the present invention;

[0054] Figure 6 Partial structural schematic diagram of the saw teeth mounted on the main body in Embodiment 1 of the present invention;

[0055] Figure 7 Partial top view of the structure of the saw teeth mounted on the main body in Embodiment 1 of the present invention;

[0056] Figure 8 Partial structural schematic diagram of the saw teeth mounted on the main body in Embodiment 2 of the present invention;

[0057] Figure 9 Partial top view of the structure of the saw teeth mounted on the main body in Embodiment 2 of the present invention;

[0058] Figure 10 Partial structural schematic diagram of the saw teeth mounted on the main body in Embodiment 3 of the present invention;

[0059] Figure 11 Partial top view of the structure of the saw teeth mounted on the main body in Embodiment 3 of the present invention;

[0060] Figure 12 Effect diagram during cutting of the present invention;

[0061] Figure 13 Schematic diagram of the chordal cross-section of the saw teeth in Embodiment 1 of the present invention;

[0062] In the figure: main body 1, shaft hole 2, assembly hole 3, first protrusion 4, second protrusion 5, recessed tooth seat 6, saw teeth 7, chip-splitting groove 8, chip removal groove 9, chip-breaking groove 10, first positioning reference surface 11, second positioning reference surface 12, joint surface 13, cutting piece 14, joint piece 15, circular groove 16, first fillet 17, second fillet 18, sawdust 19, surplus space 20, third fillet 21, fourth fillet 22, chamfer 23, chord A. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached Figures 1-13 figures in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0064] In the description of the present invention, it should be understood that: the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0065] Please refer to Figures 1-13 , for the embodiments of the present invention:

[0066] Embodiment:

[0067] As Figures 1-3 shown: A diamond circular saw blade for processing titanium alloy, comprising:

[0068] A main body 1, on which a shaft hole 2 and a mounting hole 3 are provided. The shaft hole 2 is opened at the center of the axial end face of the main body 1, and the mounting hole 3 is circumferentially arranged around the shaft hole 2;

[0069] A protruding structure, the plurality of protruding structures are evenly distributed on the circumferential contour of the main body 1. The synaptic structure includes a first protruding member 4 and a second protruding member 5. The first protruding member 4 and the second protruding member 5 are sequentially circumferentially arranged on the main body 1, and an embedded tooth seat 6 is formed between the two;

[0070] Saw teeth 7, a chip-breaking groove 8 is opened at the top of the saw teeth 7, and the chip-breaking grooves 8 on the adjacent saw teeth 7 do not intersect on the cutting surface. The two side openings of the chip-breaking groove 8 are respectively opened on the front tooth surface and the rear tooth surface of the saw teeth 7. The axial cross-section of the saw teeth 7 is a quasi-parallelogram;

[0071] One end of the saw teeth 7 is arranged in the embedded tooth seat 6, and the other end extends away from the center of the main body 1 to the outside of the embedded tooth seat 6.

[0072] In this embodiment, specifically, one shaft hole 2 and four mounting holes 3 are provided; in this embodiment, the design of the embedded tooth seat 6 can increase the contact surface between the tooth seat and the saw teeth 7, improve the fitting accuracy and bonding strength. The front tooth surface of the saw teeth 7 is covered by the tooth seat, separating the sawdust 19 from the front tooth surface of the saw teeth 7, avoiding damage caused by the collision between the front tooth surface of the saw teeth 7 and the sawdust 19, extending the life of the saw teeth 7, and improving the cutting quality;

[0073] The setting of the chip-breaking groove 8 reduces the length of the main cutting edge of the saw teeth 7, reduces the cutting amount of each saw teeth 7, thereby reducing the cutting force. The groove structure of the chip-breaking groove 8 increases the heat dissipation area of the saw teeth 7 and reduces the cutting temperature; the main cutting edge is truncated, reducing the width of the sawdust 19 and avoiding the generation of wide chips.

[0074] And the embedded tooth seat 6 is formed by the first protruding member 4 and the second protruding member 5 because the protruding member has higher strength, improving the bearing limit of the embedded tooth seat 6.

[0075] As Figures 6-7 shown: The width of the chip-breaking groove 8 is 10% of the width of the saw teeth 7;

[0076] The depth of the chip-breaking groove 8 is 10% of the length of the saw teeth 7;

[0077] The minimum distance between the chip breaker groove 8 and the axial end face of the saw tooth 7 is 15% of the width of the saw tooth 7;

[0078] In this embodiment, specifically, the chip breaker grooves 8 on adjacent saw teeth 7 are staggeredly distributed. That is to say, taking two adjacent saw teeth 7 as a group, a plurality of identical groups are provided on the main body 1, and the chip breaker grooves 8 on each group (i.e., two adjacent saw teeth 7) are staggeredly arranged, and only one chip breaker groove 8 is provided on each saw tooth 7.

[0079] As Figure 2 、 3 、4 and 12 show that: a chip discharge groove 9 is provided on one side of the first protruding member 4 away from the recessed tooth seat 6, a chip breaking groove 10 is provided on the top of the first protruding member 4, and the recessed tooth seat 6 is communicated with the chip discharge groove 9 through the chip breaking groove 10.

[0080] In this embodiment, the setting of the chip breaking groove 10 can cut off the sawdust 19, reduce the length of the sawdust 19, form C-shaped chips, and avoid the generation of long sawdust 19. The bottom of the chip discharge groove 9 is also arc-shaped to adapt to the shape of the sawdust 19, avoid accumulation, and facilitate discharge.

[0081] As Figures 2-4 shown: the protruding distance of the first protruding member 4 on the main body 1 is less than the protruding distance of the second protruding member 5 on the main body 1;

[0082] One end of the chip breaking groove 10 is communicated with the recessed tooth seat 6, and the other end extends obliquely in the form of an arc towards the side of the chip discharge groove 9 in the direction close to the inside of the main body 1;

[0083] The distance from the bottom of the chip discharge groove 9 to the center of the main body 1 is less than the distance from the bottom of the recessed tooth seat 6 to the center of the main body 1.

[0084] As Figure 3 shown: the recessed tooth seat 6 includes:

[0085] A first positioning reference surface 11, one end of the first positioning reference surface 11 is connected to the chip breaking groove 10, and the other end extends towards the inside of the center of the main body 1. The first positioning reference surface 11 is in close fit with the front tooth surface of the saw tooth 7;

[0086] A second positioning reference surface 12, one end of the second positioning reference surface 12 is connected to the first positioning reference surface 11, and the other end is inclined away from the first reference surface towards the direction close to the center of the main body 1, serving as the bottom surface of the recessed tooth seat 6 to be closely abutted against the bottom surface of the saw tooth 7;

[0087] The joint surface 13, one end of the joint surface is connected to the second protruding member 5, and the other end extends towards the center of the holder body 1 to the second positioning reference surface 12. The joint surface 13 is parallel to the first positioning reference surface 11 and faces the rear tooth surface of the saw tooth 7.

[0088] In this embodiment, high-precision machining is performed on the first positioning reference surface 11 and the second positioning reference surface 12, which are the key mating surfaces on the recessed tooth seat 6 that come into contact with the saw tooth 7, to improve the mating accuracy between the recessed tooth seat 6 and the saw tooth 7, thereby improving the cutting accuracy.

[0089] In addition, by assembling the parallelogram-shaped saw tooth 7 through the recessed tooth seat 6, a parallelogram surplus space 20 is generated, which not only improves the assembly convenience of the saw tooth 7 but also makes the welding agent uniform everywhere within the surplus space 20, making it easier to achieve uniformity in the welding of the saw tooth 7.

[0090] As shown in the figure: There is a surplus space 20 between the joint surface 13 and the rear tooth surface of the saw tooth 7 for accommodating the welding agent, and the width of the surplus space 20 is 0.5 mm.

[0091] As Figures 4-5 shown: The saw tooth 7 includes a cutting member 14 and a joint member 15, and the cutting member 14 is fixedly connected to the joint member 15;

[0092] The side of the cutting member 14 away from the joint member 15 serves as the front tooth surface of the saw tooth 7, and the cutting member 14 is made of polycrystalline diamond material with a thickness of 0.5 mm;

[0093] The side of the joint member 15 away from the cutting surface serves as the rear tooth surface of the saw tooth 7, and the joint member 15 is made of cemented carbide with a thickness of 1.5 mm.

[0094] In this embodiment, the saw tooth 7 is set as a composite structure, which can reduce the cost of the circular saw blade while not affecting its cutting quality.

[0095] For a part of the saw tooth 7 that protrudes from the recessed tooth seat 6, when corresponding to the front tooth surface of the saw tooth 7, the height by which the front tooth surface exceeds the first protruding member 4 is only 1 mm. With such a setting, while the saw tooth 7 can ensure the cutting effect, the first protruding member 4 can cover the front tooth surface of the saw tooth 7 to the maximum extent, protecting the front tooth surface of the saw tooth 7 from being damaged by the sawdust 19 to the maximum extent.

[0096] As Figure 4 、 5 、7 and 13 show that the chordal cross-section of the chip breaker 8 is a quasi-equilateral trapezoid, the longer base of this trapezoid is located on the rear tooth surface, and the two base angles of this trapezoid are rounded.

[0097] Specifically, in this embodiment, the included angle formed between the longer side of the trapezoid and the side is 85°. The junction between the bottom of the chip-breaking groove 8 and the side groove walls on both sides of the chip-breaking groove 8 adopts a rounded corner transition, and the radius of these two rounded corners is 0.1 mm. Such a setting can expand the chip-breaking groove 8 and improve the chip evacuation efficiency of the chip-breaking groove 8 while minimizing the impact of the chip-breaking groove 8 on the strength of the saw tooth 7.

[0098] As Figure 3 shown: The junction between the first positioning reference surface 11 and the chip-breaking groove 10 adopts a rounded corner transition;

[0099] A circular groove 16 protruding in the direction away from the center of the recessed tooth seat 6 is provided at the junction between the first positioning reference surface 11 and the second positioning reference surface 12;

[0100] The junction between the second positioning reference surface 12 and the joint surface 13 adopts a rounded corner transition;

[0101] The intersection of the rear tooth surface and the bottom surface of the saw tooth 7 adopts an inclined chamfer 23 for transition.

[0102] In this embodiment, for the convenience of understanding and distinction, the rounded corner at the junction between the first positioning reference surface 11 and the chip-breaking groove 10 is called the first rounded corner 17, the rounded corner at the junction between the second positioning reference surface 12 and the joint surface 13 is called the second rounded corner 18, and the rounded corners in the rounded corner transition at the junction between the bottom of the chip-breaking groove 8 and the side groove walls on both sides of the chip-breaking groove 8 in the previous text are respectively used as the third rounded corner 21 and the fourth rounded corner 22, that is, the radius of the third rounded corner 21 and the fourth rounded corner 22 is 0.1 mm.

[0103] Specifically, in this embodiment, the radius of the first rounded corner 17 is: 0.05 mm, the radius of the second rounded corner 18 is 0.15 mm, the radius of the radial cross-section of the circular groove 16 is: 0.15 mm, the angle of the inclined chamfer 23 is 45°, and the depth of the inclined chamfer 23 is 0.15 mm.

[0104] In this embodiment, by setting the rounded corners, the circular groove 16 and the inclined chamfer 23, the possible conflict damage between the convex corners of the saw tooth 7 and the concave corners of the recessed tooth seat 6 can be avoided. Among them, the setting of the inclined chamfer 23 and the second rounded corner 18 increases the contact area between the welding agent and the recessed tooth seat 6 and enhances the bonding strength between the welding agent and the tooth seat. Specifically, in the radial cross-section, the center of the circular groove 16 coincides with the joint point of the first positioning reference surface 11 and the second positioning reference surface 12.

[0105] The inclined chamfer 23 increases the contact area between the saw tooth 7 and the welding agent, thereby enhancing the bonding strength between the saw tooth 7 and the welding agent.

[0106] The rake angle of the saw tooth 7 is 10°, the clearance angle of the saw tooth 7 is 5°, and the inner concave angle of the rear tooth surface of the saw tooth 7 is 4°.

[0107] In this embodiment, the relatively small rake angle and clearance angle enable the saw teeth 7 to have sufficient toughness during high-strength metal cutting, preventing the saw teeth 7 from breaking during cutting, reducing the number of times the circular saw blade needs to be replaced, and ensuring the continuity and efficiency of cutting.

[0108] The relatively small concave angle of the back tooth surface enables the saw teeth 7 to have sufficient toughness during high-strength metal cutting. While preventing the saw teeth 7 from breaking during cutting, it reduces the frictional force between the saw teeth 7 and the saw kerf, thereby reducing the cutting force and the heat generated by friction.

[0109] Embodiment 2

[0110] The difference between this embodiment and Embodiment 1 lies in: the number and position of the chip-breaking grooves 8.

[0111] Specifically, as Figures 8-9 shown:

[0112] In this embodiment, specifically, the chip-breaking grooves 8 on adjacent saw teeth 7 are staggeredly distributed. That is, it can be understood that taking three continuously adjacent saw teeth 7 as a group, several identical groups are provided on the main body 1, and the chip-breaking grooves 8 on each group (i.e., adjacent three saw teeth 7) are staggeredly arranged. One chip-breaking groove 8 is provided on each saw tooth 7, and the arrangement distribution of each chip-breaking groove 8 in the axial direction of the three saw teeth 7 is in the order of upper, middle, and lower.

[0113] Embodiment 3

[0114] The difference between this embodiment and Embodiment 1 lies in: the size, number and position of the chip-breaking grooves 8.

[0115] Specifically, as Figures 10-11 shown: The width of the chip-breaking groove 8 is 10% of the width of the saw tooth 7;

[0116] The depth of the chip-breaking groove 8 is 20% of the length of the saw tooth 7;

[0117] The minimum distance between the chip-breaking groove 8 and the axial end face of the saw tooth 7 is 15% of the width of the saw tooth 7;

[0118] The minimum distance between each chip-breaking groove 8 is 20% of the width of the saw tooth 7.

[0119] In this embodiment, specifically, the chip-breaking grooves 8 on adjacent saw teeth 7 are staggeredly distributed. That is to say, taking two continuously adjacent saw teeth 7 as a group, several identical groups are provided on the main body 1, and the chip-breaking grooves 8 on each group (i.e., two adjacent saw teeth 7) are staggeredly arranged. Among them, the number of chip-breaking grooves 8 on one saw tooth 7 is set to one, and the number of chip-breaking grooves 8 on the other saw tooth 7 is two. For the saw tooth 7 with two chip-breaking grooves 8, the distribution of its chip-breaking grooves 8 is located above and below in the axial direction of the saw tooth 7, while for the saw tooth 7 with one chip-breaking groove 8, the position of its chip-breaking groove 8 is located in the middle in the axial direction of the saw tooth 7.

[0120] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0121] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A diamond circular saw blade for processing titanium alloy, characterized in that, Comprising: A main body (1) provided with a shaft hole (2) and an assembly hole (3) thereon. The shaft hole (2) is opened at the center position of the axial end face of the main body (1), and the assembly hole (3) is circumferentially arranged around the shaft hole (2); A protruding structure, wherein a plurality of protruding structures are evenly distributed on the circumferential contour of the main body (1). The synaptic structure includes a first protruding member (4) and a second protruding member (5). The first protruding member (4) and the second protruding member (5) are sequentially circumferentially arranged on the main body (1), and an indented tooth seat (6) is formed between the two; A sawtooth (7) with a chip-breaking groove (8) opened at the top thereof, and the chip-breaking grooves (8) on adjacent sawteeth (7) do not intersect on the cutting surface. The two side openings of the chip-breaking groove (8) are respectively opened on the front tooth surface and the rear tooth surface of the sawtooth (7), and the axial cross-section of the sawtooth (7) is a quasi-parallelogram; One end of the sawtooth (7) is arranged in the indented tooth seat (6), and the other end extends away from the center of the main body (1) to the outside of the indented tooth seat (6).

2. The diamond circular saw blade for processing titanium alloy according to claim 1, characterized in that, The width of the chip-breaking groove (8) is 10% - 25% of the width of the sawtooth (7); The depth of the chip-breaking groove (8) is 10% - 15% of the length of the sawtooth (7); The minimum distance between the chip-breaking groove (8) and the 30 axial end face of the sawtooth (7) is 15% of the width of the sawtooth (7) 30; The minimum distance between each chip-breaking groove (8) is 20% of the width of the sawtooth (7).

3. A diamond circular saw blade for processing titanium alloy according to claim 1 or 2, characterized in that, A chip removal groove (9) is arranged on one side of the first protruding member (4) away from the indented tooth seat (6), and a chip-breaking groove (10) is arranged at the top of the first protruding member (4). The indented tooth seat (6) is communicated with the chip removal groove (9) through the chip-breaking groove (10).

4. The diamond circular saw blade for machining titanium alloy according to claim 3, characterized in that, The protruding distance of the first protruding member (4) on the main body (1) is less than the protruding distance of the second protruding member (5) on the main body (1); One end of the chip-breaking groove (10) is communicated with the indented tooth seat (6), and the other end extends obliquely in an arc form towards the direction close to the inside of the main body (1) to one side of the chip removal groove (9); The distance from the bottom of the chip removal groove (9) to the center of the main body (1) is less than the distance from the bottom of the indented tooth seat (6) to the center of the main body (1).

5. A diamond circular saw blade for processing titanium alloy according to claim 4, characterized in that, The indented tooth seat (6) includes: A first positioning reference surface (11), one end of the first positioning reference surface (11) is connected to the chip-breaking groove (10), and the other end extends towards the inside of the main body (1). The first positioning reference surface (11) is closely attached to the front tooth surface of the sawtooth (7); A second positioning reference surface (12), one end of the second positioning reference surface (12) is connected to the first positioning reference surface (11), and the other end is inclined away from the first reference surface towards the direction close to the center of the main body (1) to be closely attached to the bottom surface of the indented tooth seat (6) and the bottom surface of the sawtooth (7); A joint surface (13), one end of the joint surface is connected to the second protruding member (5), and the other end extends towards the center of the main body (1) to the second positioning reference surface (12). The joint surface (13) is parallel to the first positioning reference surface (11) and faces the rear tooth surface of the sawtooth (7).

6. A diamond circular saw blade for processing titanium alloy according to claim 5, characterized in that, There is a surplus space (20) between the joint surface (13) and the rear tooth surface of the sawtooth (7) for accommodating the welding agent, and the width of the surplus space (20) is 0.5 to 1 mm.

7. A diamond circular saw blade for processing titanium alloy according to claim 5 or 6, characterized in that, The sawtooth (7) includes a cutting member (14) and a joint member (15), and the cutting member (14) is fixedly connected to the joint member (15); The side of the cutting member (14) away from the joint member (15) serves as the front tooth surface of the sawtooth (7), and the cutting member (14) is made of polycrystalline diamond material with a thickness of 0.3 to 0.6 mm; The side of the joint member (15) away from the cutting surface serves as the rear tooth surface of the sawtooth (7), and the joint member (15) is made of cemented carbide with a thickness of 1 to 2 mm.

8. A diamond circular saw blade for processing titanium alloy according to claim 7, characterized in that, The chordal cross-section of the chip breaker groove (8) is similar to an equilateral trapezoid, the longer base of this trapezoid is located on the rear tooth surface, and the two base angles of this trapezoid are rounded.

9. A diamond circular saw blade for processing titanium alloy according to claim 8, characterized in that, The connection between the first positioning reference surface (11) and the chip breaker groove (10) is rounded; At the connection between the first positioning reference surface (11) and the second positioning reference surface (12), there is a circular groove (16) protruding in the direction away from the center of the recessed tooth seat (6); The connection between the second positioning reference surface (12) and the joint surface (13) is rounded; The intersection between the rear tooth surface of the sawtooth (7) and the bottom surface of the sawtooth (7) is chamfered obliquely.

10. A diamond circular saw blade for processing titanium alloy according to claim 1, 3, 4, 5, 7, 8 or 9, characterized in that, The front angle range of the sawtooth (7) is 5° to 15°, the rear angle range of the sawtooth (7) is 5° to 10°, and the range of the concave angle of the rear tooth surface of the sawtooth (7) is 2° to 6°.

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