Diamond saw blade with bidirectional tooth protection tool bit and production process of diamond saw blade

Abstract

The invention relates to the technical field of diamond tools, in particular to a diamond saw blade with bidirectional tooth protection tool bits and a production process of the diamond saw blade. The plurality of groups of tool bits convexly extend to the outer side of the base body and are distributed in an annular array by taking the base body as the center; the chip grooves are formed between the adjacent groups of tool bits and comprise first groove bodies for separating the adjacent groups of tool bits and second groove bodies formed by sinking from the first groove bodies to the interior of the base body; wherein the second groove body is concaved towards the cutter head side from the connecting position of the second groove body and the first groove body to form protection teeth, each group of cutter heads is provided with two groups of protection teeth, and the two groups of protection teeth are distributed on the two sides of the group of cutter heads. The tool bit is specially designed to be in the two-way tooth protection shape, so that more chip grooves are formed in the saw blade cutting and contact face, the two-way tooth protection can effectively protect a base body and prevent the base body from being worn too fast and thinned, the large U-shaped chip grooves of the tool bit can take away more gravel and chips when concrete granite is cut, cutting resistance is reduced, and working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of diamond tools, in particular to a diamond saw blade with a bidirectional tooth-protecting cutter head and a production process thereof. Background Art

[0002] In today's rapidly developing economy, low-carbon and environmental protection has become the general trend. Infrastructure construction cannot do without diamond saw blades. As labor costs increase during the pouring of concrete pavements and engineering construction, high-efficiency and energy-saving tools are bound to be favored by users. Diamond saw blades can be used to strengthen the cutting and expansion of reinforced concrete pavements, as well as the cutting and maintenance of engineering bridges (maintaining new concrete pavements, walls, floor slabs, refurbishing old concrete pavements, etc.).

[0003] In order to ensure the inherent strength of the diamond saw blade, the existing diamond saw blade has a relatively small cutter head groove depth, so that the overall contact area between the diamond saw blade and the cutting material is larger during the cutting process. This results in greater resistance and makes it more difficult to discharge the cut waste, which in turn causes faster wear and affects the service life. In addition, the existing diamond saw blade has a general heat dissipation effect. If too many heat dissipation holes are set, the overall strength of the diamond saw blade will be affected. If too few heat dissipation holes are set, heat dissipation will be affected. There is a lack of a suitable heat dissipation structure.

[0004] In view of the above reasons, it is necessary to develop a diamond saw blade that is strong enough to cut reinforced concrete pavements, walls, etc., which can reduce cutting wear and ensure heat dissipation. Summary of the invention

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In order to solve the deficiencies of the prior art, an object of the present invention is to provide a diamond saw blade with a bidirectional tooth-guarding cutter head.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a diamond saw blade with a bidirectional tooth-guarding cutter head, comprising:

[0008] matrix;

[0009] A plurality of groups of cutting heads protruding from the outside of the base, wherein the plurality of groups of cutting heads are distributed in a circular array around the center of the base; and,

[0010] A chip removal groove is provided between adjacent sets of cutter heads, comprising a groove body 1 for separating adjacent sets of cutter heads, and a groove body 2 which is formed by being recessed from the groove body 1 into the base body;

[0011] The second groove body is recessed from the connection with the first groove body toward the cutter head side to form a tooth guard, and each set of cutter heads is equipped with two sets of tooth guards, and the two sets of tooth guards are distributed on both sides of the set of cutter heads.

[0012] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head described in the present invention, the groove wall of the chip groove is composed of a smooth curved surface and / or a flat surface, and the groove width of the chip groove gradually decreases from the outside of the groove body one to the inside of the groove body two, and the groove walls of the groove body one and the groove body two are tangent at the connection.

[0013] As a preferred embodiment of the diamond saw blade with a bidirectional tooth guard cutter head described in the present invention, the shape of the tooth guard is a straight line or a curve convex toward the second groove body, and the tangent direction of the tooth guard at the connection point with the second groove body is adapted to the direction of the centrifugal force at this point.

[0014] As a preferred solution of the diamond saw blade with a bidirectional tooth-protecting cutter head of the present invention, wherein: a plurality of groups of through heat dissipation holes are provided on the surface of the base body, and the heat dissipation holes are distributed in a ring array around the center of the base body;

[0015] The number of the heat dissipation holes increases gradually from the side close to the cutter head toward the base.

[0016] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head of the present invention, wherein: a heat dissipation zone is formed between at least two groups of adjacent heat dissipation holes, and the heat dissipation zone is also provided with at least two groups and distributed in a ring array with the center of the base body;

[0017] The distance dimension D1 between adjacent heat dissipation zones matches the maximum cutting width dimension D2, and the depth dimension H1 of the heat dissipation zones matches the maximum cutting depth dimension H2.

[0018] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head described in the present invention, the raw materials for preparing the cutter head are composed of copper, iron, tin, nickel, cobalt alloy, rare earth alloy, liquid paraffin and diamond, wherein the diamond particle size is at least one of 30 / 40, 40 / 50 and 50 / 60, and the diamond compressive strength is 25-40kg.

[0019] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head described in the present invention, the raw materials for preparing the cutter head are composed of the following components in proportion by mass: 10-36 parts of copper, 31-53 parts of iron, 1-7 parts of tin, 3-10 parts of nickel, 2-15 parts of cobalt alloy, 15-25 parts of rare earth alloy, 0.2-0.8 parts of liquid paraffin, and 1.2-2.5 parts of diamond.

[0020] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head described in the present invention, the raw materials for preparing the cutter head are composed of the following components in proportion by mass: 15-31 parts of copper, 33-46 parts of iron, 2-6 parts of tin, 4-8 parts of nickel, 7-12 parts of cobalt alloy, 17-22 parts of rare earth alloy, 0.3-0.6 parts of liquid paraffin, and 1.4-2.3 parts of diamond.

[0021] As a preferred embodiment of the diamond saw blade with a bidirectional tooth-guarding cutter head described in the present invention, the raw materials for preparing the cutter head are composed of the following components in proportion by mass: 22 parts of copper, 42 parts of iron, 3 parts of tin, 6 parts of nickel, 9 parts of cobalt alloy, 18 parts of rare earth alloy, 0.5 parts of liquid paraffin, and 1.7 parts of diamond.

[0022] The beneficial effects of the diamond saw blade with a bidirectional tooth-guarding cutter head of the present invention are as follows: the base, cutter head, chip groove and tooth guard are arranged to cooperate with each other, and the cutter head is specially designed into a bidirectional tooth-guarding shape so that the saw blade can cut, and the contact surface has more chip grooves. The bidirectional tooth guard can effectively protect the base to prevent excessive wear and thinning. The large U-shaped chip groove of the cutter head can take away more sand and debris when cutting concrete granite, reducing cutting resistance. At the same time, the porous shape designed near the outer circle of the base can improve the heat dissipation capacity, so that the cutter head can be kept at the lowest temperature without overheating, resulting in the cutter head not being blunted, and the cutting sharpness is improved, ultimately achieving the goal of reducing energy consumption and improving work efficiency.

[0023] In order to solve the deficiencies of the prior art, another object of the present invention is to provide a production process for a diamond saw blade.

[0024] In order to achieve the above objectives, the present invention adopts the following technical solution: A production process of a diamond saw blade, used to produce the diamond saw blade with a bidirectional tooth-guarding cutter head, is operated according to the following steps:

[0025] S1. Making the base:

[0026] The steel plate is quenched and heat treated, and after tempering, the matrix shape is cut by laser;

[0027] Temper again, grind and deburr the surface of the substrate;

[0028] S2. Making the cutter head:

[0029] Select the corresponding components of the blade raw materials, mix them evenly, and then cold press them into shape;

[0030] Then, multiple sets of cutter heads are made by hot pressing and sintering, wherein the hot pressing and sintering temperature is 780-890℃ and the pressure is 270-320kg / cm 2 , holding time 150 seconds;

[0031] Grinding the obtained multiple sets of cutter heads respectively by grinding wheels and belts;

[0032] S3. Welding the cutter head to the base:

[0033] Use an automatic high-frequency copper welding machine to adjust the cutter head and the substrate to a suitable position, apply copper solder paste to the cutter head and add a copper welding rod to the middle of the welding surface of the cutter head and the substrate;

[0034] The high frequency welding machine is started to heat and weld, so that the cutter head and the base are welded together instantly to obtain a diamond saw blade;

[0035] S4, post-processing:

[0036] First, sandblast the inner side of the cutter head after welding, and then use a special grinding wheel to grind the working surface of the diamond cutter head to expose the diamond;

[0037] The welded diamond saw blade is polished with a grinder to make the surface of the base bright, and then 2 Strength Standards: Each diamond cutter head is tested for safety welding strength;

[0038] The diamond cutter heads that failed the above tests are reworked, and the diamond cutter heads that passed the tests are sprayed with paint and dried to prevent the surfaces from rusting;

[0039] Finally, silk screen printing, laser marking and packaging are carried out in sequence.

[0040] Beneficial effects of the production process of a diamond saw blade of the present invention:

[0041] 1. Through the improvement of the manufacturing process of diamond cutter heads, the cutter heads are designed into a two-way tooth shape with a U-shaped chip removal groove in the middle. During the cutting process, the U-shaped groove of the cutter head can form a spaced concave surface, which can reduce the contact area between the cutter head and the cutting material and reduce the cutting resistance. On the other hand, the two-way tooth of the cutter head effectively protects the substrate to prevent the substrate from being worn too quickly by abrasive materials such as mud and sand after cutting, which causes the substrate to become thinner, allowing the saw blade to complete the cutting more smoothly. When the cutting machine cuts concrete pavement and other materials at high speed, it meets the construction of new concrete pavement expansion joints, wall wire troughs, floor heating troughs and other application places.

[0042] 2. The present invention particularly adopts high-temperature copper welding, which is more resistant to high temperatures than silver welding, has higher bonding strength between the cutter head and the substrate, and has better safety performance, ensuring that the cutter head can firmly resist the safe cutting of high-toughness materials such as steel bars during high-speed impact cutting.

[0043] 3. By adding cobalt alloy and rare earth alloy powder to copper, nickel, copper and tin, the conventional diamond blade is compensated for by poor heat conduction and heat dissipation during the cutting process, which causes the blade to burn and the diamond saw blade to be damaged and unusable.

[0044] 4. The heat dissipation holes of the substrate of the present invention can be used for dry cutting during the cutting process to better increase the air flow to dissipate heat and take away the high heat generated by the cutting head and the material. Not only can the cutting head always maintain its red hardness and sharpness, but the substrate will not heat up, deform or crack due to the increase in heat, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0046] Figure 1 It is a front structural schematic diagram of the diamond saw blade of the present invention.

[0047] Figure 2 It is a partial front view structural schematic diagram of the chip removal groove of the present invention.

[0048] Figure 3 It is a schematic diagram of the structure of the tooth guard during cutting by the diamond saw blade of the present invention.

[0049] Figure 4 It is a schematic diagram of the structure of the heat dissipation zone of the diamond saw blade during cutting of the present invention.

[0050] Figure 5 It is a schematic structural diagram of the heat dissipation area of ​​the diamond saw blade of the present invention at another cutting angle.

[0051] In the figure: 100, base; 200, cutter head; 300, chip groove; 301, groove body 1; 302, groove body 2; 400, tooth guard; 500, heat dissipation hole; 501, heat dissipation area. DETAILED DESCRIPTION

[0052] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0054] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0055] Example 1

[0056] Reference Figure 1-Figure 3 , which is the first embodiment of the present invention, provides a diamond saw blade with a bidirectional tooth-guarding cutter head, which can reduce cutting wear and maintain cutting strength. It includes: a base 100, a cutter head 200, a chip removal groove 300 and a tooth-guarding cutter head 400. The base 100 is provided with a mounting hole adapted to the drive shaft, which can drive the base 100 to rotate. The cutter head 200 is welded to the base 100. The rotation of the base 100 drives the cutter head 200 to rotate and cut. The chip removal groove 300 is provided between adjacent cutter heads 200, which can discharge the debris generated by cutting in time. The tooth-guarding cutter head 400 can effectively protect the base 100 from excessive wear and thinning. The tooth-guarding cutter head 400 can be an integral structure with the base 100 and formed by cutting; or the tooth-guarding cutter head 200 can be protected by welding the tooth-guarding cutter head 200 on the side of the circular base 100.

[0057] Specifically, the base 100 is set to be circular, and several groups of cutter heads 200 protrude from the outside of the base 100, and several groups of cutter heads 200 are distributed in a circular array with the center of the base 100. The cutter heads 200 protrude from the outside of the base 100, which can ensure that the cutter heads 200 with higher strength contact the cutting object during cutting. Multiple groups of cutter heads 200 are distributed in a circular array, which can make the cutting radius at each location the same, improve cutting stability, and ensure cutting effect.

[0058] Furthermore, the chip removal groove 300 provided between adjacent groups of cutter heads 200 includes a groove body 1 301 separating adjacent groups of cutter heads 200, and a groove body 2 302 formed by being recessed from the groove body 1 301 into the base 100. The chip removal groove 300 between adjacent groups of cutter heads 200 can discharge the debris through the centrifugal force generated by rotation, thereby reducing the cutting resistance. In this embodiment, the chip removal groove 300 is divided into a groove body 1 301 separating adjacent groups of cutter heads 200, and a groove body 2 302 correspondingly connected to the groove body 1 301 and extending into the base 100, which is equivalent to extending the depth of the chip removal groove 300, thereby improving the chip removal and resistance reduction effect.

[0059] The second groove body 302 is recessed from the connection with the first groove body 301 toward the side of the cutter head 200 to form a guard tooth 400. Each set of cutter heads 200 is equipped with two sets of guard teeth 400, and the two sets of guard teeth 400 are distributed on both sides of the set of cutter heads 200. Figure 3As shown, since the second groove body 302 is arranged in the base 100, the guard tooth 400 formed by the second groove body 302 being recessed toward the cutter head 200 side substantially increases the contact area between the cutter head 200 with higher strength and the object to be cut, while reducing the contact friction between the base 100 with average strength and the object to be cut, thereby effectively protecting the base 100 from excessive wear and thinning.

[0060] Preferably, in this embodiment, the guard teeth 400 are arranged on both sides of each group of cutter heads 200, that is, a bidirectional guard tooth 400 is formed. One of the advantages of this arrangement is that it is convenient to install the diamond saw blade and the drive shaft, that is, to ensure that the front and back sides can achieve the same cutting effect, so that when one side is worn more, the entire diamond saw blade can be installed in reverse and cut in the opposite direction; and another advantage of this arrangement is that the guard teeth 400 located on the cutting direction side of the cutter head 200 can reduce the wear of the base 100, and the guard teeth 400 located on the other side of the cutter head 200 are equivalent to expanding the slot width of the slot body 2 302, thereby increasing the chip removal speed of the chip removal slot 300, and further improving the chip removal and resistance reduction effect.

[0061] Example 2

[0062] Reference Figure 2-Figure 3 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a shape structure of the chip removal groove 300 to enhance the chip removal and resistance reduction effect.

[0063] Specifically, the width of the chip groove 300 gradually decreases from the outside of the groove body 1 301 to the inside of the groove body 2 302. In this embodiment, the shape of the chip groove 300 is a "U"-shaped groove, and the width of the chip groove 300 gradually decreases from the outside of the groove body 1 301 to the inside of the groove body 2 302. That is, the opening of the "U"-shaped groove is the largest on the side close to the outside of the cutter head 200. Since the side of the cutter head 200 is located at the deepest part of the cutting during cutting, a larger area of ​​the chip groove 300 size can be guaranteed at the cutting location; and the "U"-shaped groove gradually decreases from the opening to the inside of the base 100. Such a structural design can reduce the impact of the deeper chip groove 300 on the overall strength of the base 100, and has sufficient overall strength while having a larger chip removal area, thereby ensuring the reliability of cutting. Figure 2 As shown, the solid arrow indicates the cutting direction, and the dotted arrow indicates the direction in which the debris is discharged due to the centrifugal force exerted on the connection between the first trough body 301 and the second trough body 302. Of course, most of the debris will enter the first trough body 301 from the second trough body 302 and then be discharged.

[0064] Furthermore, the groove wall of the chip groove 300 is composed of a smooth curved surface and / or a flat surface, and the groove walls of the groove body 1 301 and the groove body 2 302 are tangent at the connection. The smooth groove wall here refers to relative to the existing processing technology. It is well known that the existing process level cannot achieve absolute smoothness. The smooth groove wall here means that the groove wall of the chip groove 300 is a whole, without multiple groups of obvious pits or protrusions, so that the debris can be quickly discharged along the chip groove 300, thereby reducing the chip removal resistance.

[0065] Among them, the shape of the guard 400 is a straight line or a curve convex to the second slot body 302, and the tangent direction of the guard 400 at the connection point with the second slot body 302 is adapted to the direction of the centrifugal force at this point. Centrifugal force is actually an inertial force. It is not a real force, but a force felt by an object due to inertia when it moves in a rotating reference system. Since the magnitude of the centrifugal force is only related to m (i.e. the mass of the debris at this point), w (the angular velocity of the diamond saw blade) and r (the radius of the point relative to the center of rotation), the direction of the centrifugal force always points to the outside of the rotation axis, that is, away from the center of rotation along the radius. The angular velocity w of the diamond saw blade can be set to a fixed value through the drive shaft, and the radius r of the point relative to the center of rotation is also a fixed value. The mass of the debris when the diamond saw blade cuts different specific objects (such as new and old concrete pavements, walls) is also within a measurable range of values. Therefore, the direction angle range of the centrifugal force at this point can be obtained according to different m, r, and w parameter values.

[0066] Preferably, when the tangent direction of the tooth guard 400 at the connection point with the second groove body 302 is adapted to the direction of the centrifugal force at the point, such as Figure 2 As shown, it means that the tangential direction of the connection point between the tooth guard 400 and the second groove body 302 satisfies: any angle of the centrifugal force direction of the debris at this point will not be blocked by the tangential direction of the connection point between the tooth guard 400 and the second groove body 302, that is, it is ensured that the debris discharged from the second groove body 302 toward the tooth guard 400 will not hit the tooth guard 400, preventing the tooth guard 400 and the base 100 from being worn due to resistance.

[0067] The rest of the structure is the same as that of Example 1.

[0068] Example 3

[0069] Reference Figure 3-Figure 5 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a heat dissipation hole 500, which solves the heat dissipation problem during cutting while maintaining the overall strength of the diamond saw blade.

[0070] Specifically, the surface of the substrate 100 is provided with a plurality of groups of through heat dissipation holes 500, which are distributed in a circular array with the center of the substrate 100. By providing a plurality of groups of heat dissipation holes 500 distributed in a circular array, it is ensured that the diamond saw blade has a similar heat dissipation effect when rotating and cutting at any angle, thereby promoting uniform heat dissipation.

[0071] Furthermore, the number of heat dissipation holes 500 is distributed so as to gradually increase from the side close to the cutter head 200 to the inside of the base 100. When cutting, the outer cutter head 200 often contacts the cutting object first and generates high temperature. As the cutting progresses, the high temperature generated by the cutter head 200 is transmitted from the outside of the diamond saw blade to the inside of the base 100. Therefore, the heat dissipation holes 500 are distributed so as to gradually increase from the outside to the inside of the base 100, which can improve the heat dissipation efficiency accordingly. In addition, according to the principle of lever, the resistance of the outer part away from the rotation center of the diamond saw blade will generate a large torque. Therefore, setting a plurality of groups of heat dissipation holes 500 on the side of the base 100 close to the cutter head 200 will reduce the overall strength, which may easily cause the diamond saw blade to break under stress during cutting. The distribution of heat dissipation holes 500 that gradually increase from the outside to the inside can ensure the heat dissipation efficiency and meet the needs of high strength.

[0072] Among them, there are no less than two groups of adjacent heat dissipation holes 500 forming a heat dissipation zone 501, and there are no less than two groups of heat dissipation zones 501 and they are distributed in a circular array with the center of the substrate 100. The heat dissipation zone 501 refers to a large heat dissipation section formed by multiple groups of adjacent heat dissipation holes 500 in a part of the substrate 100, and its distribution area is adapted to the part of the diamond saw blade that extends into the cutting object during cutting. That is, when the diamond saw blade is cutting, while the diamond saw blade is rotating at a high speed, only a small part of it is always involved in the cutting, and this part of the diamond saw blade generates heat due to cutting friction. Therefore, the heat dissipation area 501 formed between adjacent heat dissipation holes 500 is adapted to the part of the diamond saw blade that extends into the cutting object, so that the diamond saw blade has enough heat dissipation holes 500 to directly participate in heat dissipation at any cutting angle, and the heat dissipation holes 500 exposed on the substrate 100 are heat-dissipated after heat transfer. In comparison, the heat dissipation efficiency is the highest when the heat dissipation holes 500 that extend into the cutting object directly dissipate heat. Therefore, by setting no less than two groups of heat dissipation areas 501 and dissipating them in a circular array with the center of the substrate 100, the number of heat dissipation holes 500 that participate in direct heat dissipation is relatively large at different cutting angles.

[0073] Preferably, the distance dimension D1 between adjacent heat dissipation zones 501 matches the maximum cutting width dimension D2, and the depth dimension H1 of the heat dissipation zone 501 matches the maximum cutting depth dimension H2. Figure 4 and Figure 5As shown, in this embodiment, the multiple groups of heat dissipation holes 500 in the heat dissipation zone 501 form a "Y" shape, that is, the multiple groups of heat dissipation holes 500 in the same heat dissipation zone 501 extend and distribute in three directions, and the angles of the heat dissipation holes 500 in adjacent directions are similar, all approximately 120°. In this way, when the distance dimension D1 between adjacent heat dissipation zones 501 is close to the maximum cutting width dimension D2 (generally D1 is slightly smaller than D2), and the depth dimension H1 of the heat dissipation zone (501) is close to the maximum cutting depth dimension H2 (generally H1 is slightly smaller than H2), it can be ensured that the number of heat dissipation holes 500 participating in direct heat dissipation during cutting is not less than the number of heat dissipation holes 500 in one heat dissipation zone 501, so that at any cutting angle, there are a sufficient number of heat dissipation holes 500 participating in direct heat dissipation. In this way, by limiting the distribution of the heat dissipation holes 500, the overall strength of the diamond saw blade can be ensured by setting a limited number of heat dissipation holes 500, and the heat dissipation efficiency can be greatly improved.

[0074] The remaining structures are the same as those in Example 2.

[0075] Example 4

[0076] The fourth embodiment of the present invention is different from the previous embodiment in that this embodiment provides a raw material composition for preparing the cutter head 200 , so as to improve the cutting strength of the cutter head 200 .

[0077] Specifically, the raw materials for preparing the cutter head 200 are composed of: copper, iron, tin, nickel, cobalt alloy, rare earth alloy, liquid paraffin and diamond.

[0078] Among them, copper is usually used as part of the matrix binder of diamond saw blade segments because it has good thermal conductivity and a relatively low melting point, which helps to form a metallurgical bond between diamond and metal during the sintering process. Copper is also used to weld diamond segments due to its good ductility and toughness, which helps to improve the bonding strength between the segment and the matrix.

[0079] As one of the alloying elements, iron can improve the wear resistance and strength of diamond saw blades. In copper-iron alloys, the addition of iron can improve the plastic deformation ability of the alloy, thereby increasing the yield rate of the material. At the same time, the addition of iron can also improve the hardness and heat resistance of the alloy.

[0080] Tin is usually part of copper alloys to improve the casting and welding properties of the alloy. In diamond saw blades, the addition of tin can increase the fluidity of the alloy, thereby improving the forming process of the blade.

[0081] The role of nickel in diamond saw blades is to improve the strength and hardness of the alloy, and it can also improve the corrosion resistance and heat resistance of the alloy. The addition of nickel can improve the mechanical properties of copper-based alloys, especially in improving the strength and plasticity of the alloy.

[0082] Cobalt is often used as a binder in diamond saw blades because it can form a strong chemical bond with diamond, improve the grip of diamond particles, and prevent the diamond from falling off prematurely, thereby improving the cutting efficiency and life of the saw blade.

[0083] The addition of rare earth elements (such as lanthanum, cerium, etc.) can significantly reduce the wear performance of the binder and improve the cutting efficiency of the diamond saw blade. Rare earth elements can also increase the purity of the alloy and improve the physical properties of the alloy.

[0084] Liquid paraffin is mainly used as a temporary binder or lubricant in the production of diamond saw blades, which helps to reduce the friction between diamond particles during pressing and sintering, prevent the wear of diamond particles, and help the uniform distribution of diamond particles in the matrix.

[0085] Diamond is the main cutting element of diamond saw blades. Its extremely high hardness and wear resistance enable diamond saw blades to cut hard materials such as stone, concrete, etc.

[0086] Furthermore, a diamond particle size of at least one of 30 / 40, 40 / 50 and 50 / 60 is selected, and a diamond compressive strength of 25-40kg is selected to meet the cutting strength requirements for concrete pavements.

[0087] The rest of the structure is the same as that of Example 3.

[0088] Example 5

[0089] The fifth embodiment of the present invention is different from the previous embodiment in that the raw materials for preparing the tool head 200 in this embodiment are composed of the following components in parts by mass: 10-36 parts of copper, 31-53 parts of iron, 1-7 parts of tin, 3-10 parts of nickel, 2-15 parts of cobalt alloy, 15-25 parts of rare earth alloy, 0.2-0.8 parts of liquid paraffin, and 1.2-2.5 parts of diamond.

[0090] The remaining structures are the same as those in Example 4.

[0091] A production process for a diamond saw blade with a bidirectional tooth-guarding cutter head: take 2.75kg of copper powder, 3.85kg of iron, 0.5kg of nickel, 1.2kg of cobalt alloy, 0.4kg of tin, and 1.3kg of rare earth alloy, put them into a mixing barrel and mix for 30 minutes, then add 0.08kg of liquid paraffin and 0.2kg of diamond, continue mixing for 4 hours, pour the powder into a mold and cold press it into shape, and then hot press and sinter it into a cutter head 200; then grind the cutter head 200 with a grinding wheel and abrasive belt, put the cutter head 200 together with the base 100 on the corresponding base position according to the drawing requirements, and adjust the light spot of the laser welding machine in the prior art to the appropriate position of the cutter head 200 and the base 100. Then start the laser welding machine to weld the cutter head 200 and the base 100 together at the moment the laser penetrates, and then heat it at 600N / mm 2 Strength standard: Each diamond cutter head 200 is tested for welding strength, and then the high-frequency welding tooth guard 400 is used. After welding, the two-way tooth guard 400 high-strength diamond saw blade is polished with a grinder to make the base surface bright, and then the working surface of the diamond cutter head 200 is polished with a special grinding wheel to expose the diamond, and then the surface is sprayed with paint and dried to prevent the surface from rusting. Finally, the surface is polished with 600N / mm 2 Strength standard: Each diamond cutter head is tested for welding strength. If it fails, it will be reworked. If it passes, it will be painted and dried to prevent rust on the surface. Finally, it will be screen-printed, laser-marked, packaged and stored.

[0092] Example 6

[0093] This is the sixth embodiment of the present invention. Different from the previous embodiment, the raw materials for preparing the tool head 200 in this embodiment are composed of the following components in proportion by mass: 15-31 parts of copper, 33-46 parts of iron, 2-6 parts of tin, 4-8 parts of nickel, 7-12 parts of cobalt alloy, 17-22 parts of rare earth alloy, 0.3-0.6 parts of liquid paraffin, and 1.4-2.3 parts of diamond.

[0094] The remaining structures are the same as those in Example 4.

[0095] A production process for a diamond saw blade with a bidirectional tooth-guarding cutter head: take 2.55kg of copper powder, 3.8kg of iron, 0.6kg of nickel, 1.35kg of cobalt alloy, 0.40kg of tin, and 1.4kg of rare earth alloy, put them into a mixing barrel and mix for 30 minutes, then add 0.06kg of liquid paraffin and 0.17kg of diamond, continue mixing for 4 hours, pour the powder into a mold and cold press it into shape, and then hot press and sinter it into a cutter head 200; then grind the cutter head 200 with a grinding wheel and abrasive belt, put the cutter head 200 together with the base 100 at the corresponding position of the base 100 according to the drawing requirements, and adjust the light spot of the laser welding machine in the prior art to the appropriate position of the cutter head 200 and the base 100. Then start the laser welding machine to weld the cutter head 200 and the base 100 together at the moment the laser penetrates, and then heat it at 600N / mm 2 Strength standard: Each diamond cutter head 200 is tested for welding strength, and then the high-frequency welding tooth guard 400 is used. After welding, the two-way tooth guard 400 high-strength diamond saw blade is polished with a grinder to make the base surface bright, and then the working surface of the diamond cutter head 200 is polished with a special grinding wheel to expose the diamond, and then the surface is sprayed with paint and dried to prevent the surface from rusting. Finally, the surface is polished with 600N / mm 2 Strength standard: Each diamond cutter head is tested for welding strength. If it fails, it will be reworked. If it passes, it will be painted and dried to prevent rust on the surface. Finally, it will be screen-printed, laser-marked, packaged and stored.

[0096] Example 7

[0097] This is the seventh embodiment of the present invention. Different from the previous embodiment, the raw materials for preparing the tool head 200 in this embodiment are composed of the following components in proportion by mass: 22 parts of copper, 42 parts of iron, 3 parts of tin, 6 parts of nickel, 9 parts of cobalt alloy, 18 parts of rare earth alloy, 0.5 parts of liquid paraffin, and 1.7 parts of diamond.

[0098] The remaining structures are the same as those in Example 4.

[0099] A production process of a diamond saw blade with a bidirectional tooth-protecting cutter head: 2.2 kg of copper powder, 4.2 kg of iron, 0.6 kg of nickel, 0.9 kg of cobalt alloy, 0.3 kg of tin, and 1.8 kg of rare earth alloy are taken and put into a mixing barrel and mixed for 30 minutes, and then 0.05 kg of liquid paraffin and 0.17 kg of diamond are added, and the powder is poured into a mold for cold pressing after continuing to mix for 3 hours, and then the cutter head 200 is hot-pressed and sintered; then the cutter head 200 is polished by a grinding wheel and abrasive belt, and the cutter head 200 is placed together with a substrate 100 at a position of the substrate 100 corresponding to the requirements of the drawing, and the light spot of the laser welding machine of the prior art is adjusted to a suitable position of the cutter head 200 and the substrate 100, and the laser welding machine is started to weld, so that the cutter head 200 and the substrate 100 are welded together at the moment when the laser penetrates, and then the cutter head 200 and the substrate 100 are welded at 600 N / mm 2Strength standard: Each diamond cutter head 200 is tested for welding strength, and then the high-frequency welding tooth guard 400 is used. After welding, the two-way tooth guard 400 high-strength diamond saw blade is polished with a grinder to make the surface of the base bright, and then the working surface of the diamond cutter head 200 is polished with a special grinding wheel to expose the diamond, and then the surface is sprayed with paint and dried to prevent the surface from rusting. Finally, the surface is polished with 600N / mm 2 Strength standard: Each diamond cutter head is tested for welding strength. If it fails, it will be reworked. If it passes, it will be painted and dried to prevent rust on the surface. Finally, it will be screen-printed, laser-marked, packaged and stored.

[0100] The mass fractions of the raw materials used to prepare the cutter head 200 in the above-mentioned embodiments 5, 6 and 7 are shown in Table 1.

[0101]

[0102]

[0103] Table 1 Comparison of raw material components for preparing cutter heads

[0104] From the comparative analysis in the above table, it can be seen that in Example 5, the copper content is relatively high, the iron content is relatively low, and the contents of tin, nickel, and cobalt alloy are also relatively high, which may make the cutter head 200 have higher hardness and wear resistance, but the strength performance may be slightly reduced; in Example 6, the copper and iron contents are relatively balanced, and the contents of tin, nickel, and cobalt alloy are increased, which can improve the hardness and wear resistance of the cutter head 200 while maintaining good strength performance; in Example 7, the copper content is relatively low and the iron content is relatively high, which will make the cutter head 200 have higher strength performance, but the hardness and wear resistance may be relatively low. In actual production and processing, it is only necessary to flexibly select the raw material ratio of the appropriate components according to the use requirements.

[0105] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A diamond saw blade with a bidirectional tooth-guarding cutter head, characterized in that: include, A substrate (100); A plurality of groups of cutting heads (200) protruding to the outside of the base (100), wherein the plurality of groups of cutting heads (200) are distributed in a circular array with the center of the base (100); and, A chip removal groove (300) provided between adjacent sets of cutter heads (200), comprising a groove body (301) for separating adjacent sets of cutter heads (200), and a groove body (302) formed by being recessed from the groove body (301) into the base body (100); The second groove body (302) is recessed from the connection with the first groove body (301) toward the side of the cutter head (200) to form a guard tooth (400), and each group of cutter heads (200) is configured with two groups of guard teeth (400), and the two groups of guard teeth (400) are distributed on both sides of the group of cutter heads (200).

2. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 1, characterized in that: The groove wall of the chip groove (300) is composed of a smooth curved surface or / and a flat surface, and the groove width of the chip groove (300) gradually decreases from the outside of the groove body 1 (301) to the inside of the groove body 2 (302), and the groove walls of the groove body 1 (301) and the groove body 2 (302) are tangent at the connection point.

3. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 1, characterized in that: The shape of the tooth guard (400) is a straight line or a curve convex toward the second groove body (302), and the tangent direction of the tooth guard (400) at the connection point with the second groove body (302) is adapted to the direction of the centrifugal force at this point.

4. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 1, characterized in that: The surface of the base (100) is provided with a plurality of groups of through heat dissipation holes (500), and the heat dissipation holes (500) are distributed in a ring array with the center of the base (100); The heat dissipation holes (500) are distributed in such a manner that the number gradually increases from the side close to the cutter head (200) toward the inside of the base body (100).

5. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 4, characterized in that: No less than two groups of adjacent heat dissipation holes (500) form a heat dissipation area (501), and no less than two groups of heat dissipation areas (501) are also arranged and distributed in a ring array at the center of the base (100); The distance dimension D1 between adjacent heat dissipation areas (501) is matched to the maximum cutting width dimension D2, and the depth dimension H1 of the heat dissipation area (501) is matched to the maximum cutting depth dimension H2.

6. The diamond saw blade with a bidirectional tooth-protecting cutter head according to any one of claims 1 to 5, characterized in that: The raw materials for preparing the cutter head (200) are composed of copper, iron, tin, nickel, cobalt alloy, rare earth alloy, liquid paraffin and diamond, wherein the diamond particle size is at least one of 30 / 40, 40 / 50 and 50 / 60, and the diamond compressive strength is 25-40kg.

7. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 6, characterized in that: The raw materials for preparing the tool head (200) are composed of the following components in parts by mass: 10-36 parts of copper, 31-53 parts of iron, 1-7 parts of tin, 3-10 parts of nickel, 2-15 parts of cobalt alloy, 15-25 parts of rare earth alloy, 0.2-0.8 parts of liquid paraffin, and 1.2-2.5 parts of diamond.

8. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 6, characterized in that: The raw materials for preparing the tool head (200) are composed of the following components in parts by mass: 15-31 parts of copper, 33-46 parts of iron, 2-6 parts of tin, 4-8 parts of nickel, 7-12 parts of cobalt alloy, 17-22 parts of rare earth alloy, 0.3-0.6 parts of liquid paraffin, and 1.4-2.3 parts of diamond.

9. The diamond saw blade with a bidirectional tooth-guarding cutter head according to claim 6, characterized in that: The raw materials for preparing the tool head (200) are composed of the following components in parts by mass: 22 parts of copper, 42 parts of iron, 3 parts of tin, 6 parts of nickel, 9 parts of cobalt alloy, 18 parts of rare earth alloy, 0.5 parts of liquid paraffin, and 1.7 parts of diamond.

10. A production process for a diamond saw blade, used for producing a diamond saw blade with a bidirectional tooth-protecting cutter head as claimed in claim 6, characterized in that: Follow these steps: S1. Manufacturing a substrate (100): The steel plate is quenched and heat treated, and then cut into a matrix (100) shape by laser after tempering; Tempering again, grinding and deburring the surface of the substrate (100); S2. Making a cutter head (200): Selecting the raw materials of the blade head (200) of corresponding components, mixing them evenly, and then cold pressing them into shape; Then, multiple sets of cutter heads (200) are formed by hot pressing and sintering, wherein the hot pressing and sintering temperature is 780-890°C and the pressure is 270-320kg / cm 2 , holding time 150 seconds; Grinding the prepared multiple sets of cutter heads (200) respectively using a grinding wheel or a grinding belt; S3, welding the cutter head (200) and the base (100): The cutter head (200) and the substrate (100) are adjusted to a suitable position by an automatic high-frequency copper welding machine, copper solder paste is applied to the cutter head (200), and a copper welding rod is added and placed in the middle of the welding surface of the cutter head (200) and the substrate (100); Starting a high frequency welding machine to heat and weld, so that the cutter head (200) and the base body (100) are instantly welded together to obtain a diamond saw blade; S4, post-processing: First, the inner side surface of the cutter head (200) after welding is sandblasted, and then the working surface of the diamond cutter head (200) is polished with a special grinding wheel to expose the diamond; The welded diamond saw blade is polished with a polishing machine to make the surface of the base (100) bright, and then 2 Strength standard: each diamond bit (200) is tested for safety welding strength; The unqualified diamond tool heads (200) are reworked, and the qualified diamond tool heads (200) are surface-painted and dried to prevent surface rust; Finally, silk screen printing, laser marking and packaging are carried out in sequence.

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