A small blade and a processing method thereof

Abstract

The application discloses a small blade, which comprises a small blade head, a small blade tooth back and a small blade base body, a positioning hole is arranged on the small blade base body, an arc-shaped supporting surface is formed on the small blade base body, the small blade is cut into a product by a circular saw blade once, and the inclined supporting surface and the horizontal supporting surface are formed by one-time cutting. The application further discloses a processing method of the small blade. The small blade effectively guarantees the profile of the small blade, realizes batch production of the small blade, has good quality consistency and high product quality, and has high production efficiency. In addition, the arc-shaped supporting surface does not participate in cutting, so that the precision requirement of the installation and positioning of the small blade is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of saw blade processing technology, and in particular relates to high-precision cutting of small blades on finished saw blades, specifically to a small blade and its processing method. Background Technology

[0002] Changes in the precision of the blade profile can affect installation, and in severe cases, may prevent the blade from being installed on the shredder disc, resulting in a waste blade. At the same time, the sharpness of the blade tip will affect the efficiency and quality of material cutting and shredding. Therefore, both the blade tip and the profile of the blade will have a significant impact on the overall performance of the blade and its use.

[0003] In existing technologies, the processing methods for small blades include direct processing of the blades. However, this method of producing small blades individually results in low production efficiency, inconsistent processing quality for each blade, and an inability to guarantee product quality.

[0004] To address the aforementioned problems associated with individually machining small blades, current attempts have been made to manufacture them using a method where the small blades are machined on the saw blade first, followed by cutting. However, existing processes require manual visual positioning, and wire cutting (fast wire EDM, medium wire EDM) is used, resulting in slow efficiency and low positioning accuracy. Furthermore, manual visual positioning means that when cutting multiple small blades on the same saw blade, the blade profile needs to be cut as a whole. This can lead to some blades having significantly different profiles from the design dimensions, as well as defects such as steps, resulting in substandard blade quality, material waste, and ultimately, low product efficiency and poor product quality.

[0005] Meanwhile, in the existing process of cutting small blades, after the blades are cut, they are collected by falling, which causes some of the blade tips to be damaged.

[0006] Therefore, there is an urgent need to design a method that can achieve high-precision cutting of small blades on finished saw blades, so as to achieve high-precision machining of small blades, ensure consistent quality of finished small blades, and have high processing efficiency and high yield. Summary of the Invention

[0007] The purpose of this invention is to solve the problems of low production efficiency, inconsistent product quality, inability to guarantee product quality, serious material waste, and low yield of existing small blades, and to provide a small blade and its processing method that can achieve high-precision machining of small blades, good product quality consistency, high processing efficiency, and high yield.

[0008] The technical solution adopted by this invention to achieve its first objective is as follows: a small blade, comprising a blade tip, a blade tooth back, and a blade base. A positioning hole is provided on the blade base, and a machined arc-shaped support surface is provided on the blade base. The small blade is formed by cutting a finished circular saw blade in one step, and the inclined support surface and horizontal support surface are formed through this one-step cutting. This small blade is produced by first manufacturing a finished circular saw blade, then setting multiple small blade structures on the finished circular saw blade according to the blade's structure, and then cutting the finished circular saw blade. This allows for the simultaneous cutting of multiple small blades. Since the blade tip, tooth back, and arc-shaped support surface are pre-machined on the finished circular saw blade, only cutting along the inclined and horizontal support surfaces is needed to form a complete small blade, effectively ensuring the blade's profile, enabling mass production of small blades, resulting in good consistency in blade quality, high product quality, and high production efficiency. Furthermore, since the arc-shaped support surface does not participate in the cutting, it ensures the accuracy requirements for blade installation and positioning.

[0009] Preferably, the blade tips are arranged along the same arc in the cutting direction. The blade tips can be arranged on the same arc according to production needs, thereby achieving wire crushing cutting during the cutting process.

[0010] Preferably, the small blades are staggered in the cutting direction, with the stagger angle between adjacent blades being 5-10 degrees. Alternatively, the blades can be staggered along the cutting direction to achieve staggered crushing and cutting during the cutting process.

[0011] Preferably, the inclined support surface, horizontal support surface, and arc-shaped support surface together form the mounting profile of the blade. The inclined support surface, horizontal support surface, and arc-shaped support surface together form the blade mounting and positioning profile, resulting in high positioning accuracy and convenient installation.

[0012] The technical solution adopted by this invention to achieve its second objective is: a method for processing a small blade, comprising the following steps:

[0013] Step 1: Process the finished circular saw blade with small blade structure, forming multiple small blade structures on the finished circular saw blade at one time;

[0014] Step 2: Create the cutting auxiliary outline on the support plate;

[0015] Step 3: Program the cutting path in the product drawing of the CAM software, and form the small blade production cutting path on the finished circular saw blade;

[0016] Step 4: Place the finished circular saw blade with the small blades used to create the cutting path on the cutting aid profile;

[0017] Step 5: Start the cutting tool. The cutting tool cuts along the small blade production cutting path in one go to form multiple small blades.

[0018] This method of processing small blades changes the traditional approach of directly machining them and alters the method of cutting and manufacturing the blades. Based on the size and specifications of the small blades, the number of blade structures on the circular saw blade is determined, and then the finished circular saw blade is manufactured according to production process requirements. Following the shape of the finished circular saw blade, a cutting auxiliary profile is created on a support plate. Then, the blade production cutting path is set according to the blade's shape and generated on the finished circular saw blade. The finished circular saw blade is placed directly above the cutting auxiliary profile, and the cutting tool is activated. The cutting tool cuts along the blade production cutting path in one go, forming multiple small blades. During the cutting process, the cutting tool cuts along the production cutting path of the small blade, ensuring that the shape of the small blade does not change. Simultaneously, due to the support of the cutting auxiliary profile below, sufficient space is reserved in the cutting line area of ​​the blade head during the cutting process, allowing the cutting tool to move unimpeded along the support plate's cutting auxiliary profile and the small blade's production cutting path. Residue generated during cutting can fall into the groove of the cutting auxiliary profile in a timely manner, avoiding contact with the blade head. Furthermore, the lower part of the cutting path has a hollowed-out groove structure, preventing heat from being fed back to the small blade and causing burns. Since the small blade is supported on the cutting auxiliary profile of the support plate before and after cutting, its position remains unchanged, and the blade head does not contact the support plate. The cut small blade remains intact on the support plate after cutting, ensuring that the sharpness of the blade head is not damaged, greatly improving the product quality of the small blade. Moreover, the shape of the small blade does not change after cutting and is consistent with the design shape, achieving consistent production of small blade quality, high production efficiency, and high product quality precision.

[0019] Preferably, the blade structure described in step 1 includes a blade tip, a blade tooth back, a positioning hole, an arc-shaped support surface, and a blade substrate to be cut integrally formed on the circular saw blade substrate. The blade structure is pre-processed on the finished circular saw blade, which ensures the quality of the blade. Moreover, the arc-shaped support surface does not participate in the cutting process, which ensures the installation and positioning profile of the blade and achieves precise positioning and installation.

[0020] Preferably, step 2 involves cutting a cutting auxiliary profile for the small blade on the support plate according to the profile of the finished circular saw blade. The cutting auxiliary profile includes a central hole in the support plate and several small blade profiles. The small blade profiles include cutting path grooves, several support plate slots, and support plate positioning holes. The design of the cutting auxiliary profile serves several purposes: first, to facilitate the unobstructed flow of the cutting tool or laser beam during cutting; second, to facilitate the falling of cutting residue and prevent impact on the small blades; third, to facilitate heat dissipation during cutting and prevent burns to the small blades; fourth, to ensure that the small blades do not deform after cutting, allowing for the arrangement of the designed profiles; and fifth, to achieve non-contact, suspended support for the small blade tips, preventing contact with the blade tips, ensuring the sharpness of the tips, and improving the production quality of the small blades. The support positioning holes cooperate with the positioning holes on the small blades to achieve positioning, ensuring that the position of the small blades does not change before and after cutting, effectively improving the cutting quality and grade of the product.

[0021] Preferably, the small blade production cutting path described in step 3 includes a blade head feed path inlet, multiple actual cutting path units, multiple idle path units, and a blade head feed path outlet. The small blade production cutting path is designed to complete the cutting of all small blades on the same circular saw blade in a single pass, and to ensure that the profile of the cut small blades perfectly matches the design. Therefore, the small blade production cutting path mainly includes a blade head feed path inlet, a blade head feed path outlet, and corresponding multiple actual cutting path units and multiple idle path units.

[0022] Preferably, step 3 involves designing and drawing the cutting path diagram of the small blade on the finished circular saw blade based on its structure using CAD. After the cutting path is edited, it is imported into the CAM system, the tool path is set, and the programmed code is imported into the laser cutting machine's operating computer. The blade is then positioned on the corresponding cutting auxiliary profile drawing on the support plate using a center-capture positioning method. The cutting path can be designed and drawn directly on the finished circular saw blade, or it can be imported into the laser cutting machine's operating computer and positioned on the corresponding cutting auxiliary profile drawing on the support plate using a center-capture positioning method. The design can be tailored to different cutting tools.

[0023] Preferably, in step 4, the finished circular saw blade with the cutting path created by the small blade is placed directly above the cutting auxiliary profile on the support plate; in step 5, the cutting tool is either a cutting tool or a laser cutting tool. Cutting can be done using either a cutting tool or a laser cutting tool.

[0024] The beneficial effects of this invention are as follows: the small blade and its processing method achieve the cutting of the small blade on the finished circular saw blade, while using a support plate with a cutting auxiliary profile for support. The cutting path of the small blade production is designed in advance, and the cutting tool cuts along the small blade production cutting path. With the help of the cutting auxiliary profile below, it is ensured that the profile of the cut small blade is consistent with the designed profile. The reverse side of the small blade will not be burned during the cutting process, the position of the small blade does not change before and after cutting, and the cutting head does not touch the support plate. This greatly improves the product quality of the small blade, realizes the consistent production of small blade quality, and has high production efficiency and high product quality precision. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of one type of blade of the present invention;

[0026] Figure 2 is a schematic diagram of the structure of a finished circular saw blade according to the present invention;

[0027] Figure 3 is a schematic diagram of a structure for cutting auxiliary profiles on the support plate in this invention;

[0028] Figure 4 is a schematic diagram of a cutting path for the small blade production in this invention;

[0029] Figure 5 This is a schematic diagram of a finished circular saw blade with a small blade producing a cutting path, according to the present invention.

[0030] Figure 6 This is a schematic diagram of a cutting blade in Embodiment 2 of the present invention;

[0031] Figure 7 yes Figure 6 Sectional view of film A;

[0032] In the diagram: 100, small blade; 200, finished circular saw blade; 300, cutting auxiliary profile; 400, small blade production cutting path; 401, blade head cutting path inlet; 402, actual cutting path unit; 403, idle path unit; 404, blade head cutting path outlet; 405, small blade inclined support surface cutting path; 406, small blade horizontal support surface cutting path; 500, support plate.

[0033] 1. Blade tip, 2. Blade tooth back, 3. Blade base, 31. First positioning hole, 32. Second positioning hole, 33. Third positioning hole, 34. Inclined support surface, 35. Horizontal support surface, 36. Arc-shaped support surface;

[0034] 4. Circular saw blade base; 41. Circular saw blade center hole; 42. Spacing section;

[0035] 5. Blade structure; 6. Support plate center hole; 7. Blade profile; 71. Cutting path profile groove; 72. Support plate hole groove; 73. Support plate positioning hole; 74. Cutting path idle area.

[0036] 8. Pin; 81. Insertion end; 82. External end. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] Example 1:

[0039] exist Figure 1 In the illustrated embodiment, a small blade 100 includes a blade head 1 for material cutting, a blade tooth back 2 for fixing and supporting the blade head 1, and a blade base 3 for supporting the blade head 1 and fixing it to a device. The thickness of the blade base 3 is 1mm to 6mm. Positioning holes are provided on the blade base 3, and a machined arc-shaped support surface 36 is provided on the blade base 3. The blade is formed in one cut by a circular saw blade 200, and an inclined support surface 34 and a horizontal support surface 35 are formed in one cut. The blade head 1 is arranged along the same arc in the cutting direction. Alternatively, the blade heads 1 are arranged in a staggered structure in the cutting direction, with the stagger angle between adjacent blade heads 1 being 5-10 degrees.

[0040] The blade tip 1 is made of cemented carbide. The tip is sharpened to a point by grinding with a grinding wheel. Even slight impacts can cause the tip to chip or break, ultimately affecting the cutting effect.

[0041] The back teeth 2 of the small blade are located on the outer periphery of the small blade base 3. Both are made of the same material, alloy steel, and have undergone quenching and medium-temperature tempering treatment. They have good wear resistance and toughness and are used to support the sharp small blade tip 1. They are directly connected to the equipment and the connection method is mainly screw locking.

[0042] Multiple blade positioning holes are distributed on the blade base 3. The blade positioning holes include a first positioning hole 31, a second positioning hole 32, and a third positioning hole 33. The main function of the blade positioning holes is to position the blades through the blade positioning holes and lock them to the crushing disc with screws to realize the crushing operation.

[0043] The blade 100 has three supporting surfaces: an inclined supporting surface 34, a horizontal supporting surface 35, and an arc-shaped supporting surface 36. The main function of these three supporting surfaces is to support and position the blade during installation on the pulverizing disc. The three supporting surfaces are in clearance fit with the pulverizing disc. Changes in the profile of the arc-shaped supporting surface 36 can affect installation, and in severe cases, may prevent the blade from being installed on the pulverizing disc. Therefore, the profile accuracy of the arc-shaped supporting surface 36 is crucial for ensuring the proper installation and positioning of the blade on the pulverizing disc.

[0044] like Figure 2 As shown, the finished circular saw blade 200 includes a circular saw blade base 4, on which a plurality of small blade structures 5 are provided, and a spacing portion 42 is provided between two adjacent sets of small blade structures 5; in this embodiment, five sets of small blade structures are provided at once on the circular saw blade base 4. A circular saw blade center hole 41 is provided at the center of the finished circular saw blade 200. The small blade structure 5 includes a small blade tip 1, a small blade tooth back 2, and a small blade base 3, which is integrally formed on the circular saw blade base 4 to be cut. It also includes a first positioning hole 31, a second positioning hole 32, and a third positioning hole 33. And a small blade arc-shaped support surface 36 formed on the circular saw blade base 4.

[0045] like Figure 3 As shown, the support plate 500 is made of steel plate, with a length and width of 1 meter or more and a thickness of 2.0 mm or more.

[0046] A cutting auxiliary profile 300 is made on the support plate 500; a small blade cutting auxiliary profile 300 is cut on the support plate according to the profile of the finished circular saw blade 200. The cutting auxiliary profile 300 includes the center hole 6 of the support plate and several small blade profiles 7.

[0047] The center hole 6 of the support plate is located at the center of the support plate 500. The support plate 500 is provided with a small blade profile 7 according to the profile of the finished saw blade. The small blade profile 7 includes a cutting path profile groove 71, a support plate hole groove 72, and a support plate positioning hole 73. The cutting path profile groove 71 is located on the support plate at the position corresponding to the cutting support of the small blade. The cutting path profile groove 71 on the support plate 500 is roughly U-shaped. The groove width of the cutting path profile groove 71 at the inlet and outlet is greater than the groove width at other positions. The groove width at the inlet and outlet is greater than the groove width at other positions. This is to facilitate the movement of the laser head and also to support the blade tips on both sides of the small blade. The support plate hole groove 72 is located on the support plate at the position corresponding to the blade tip to protect the blade tip from colliding with the support plate. The support plate hole groove 72 is roughly elliptical. The support plate positioning hole 73 is located near the support plate hole groove 72.

[0048] Based on the structure of the small blade, design the small blade production cutting path 400 on the finished circular saw blade 200 (see...). Figure 4 , Figure 5 The small blade production cutting path 400 includes a blade head feed path inlet 401, multiple actual cutting path units 402, multiple idle path units 403, and a blade head feed path outlet 404. A drawing of the small blade cutting path diagram is prepared using CAD and imported into CAM to set the laser head feed path.

[0049] Import the programmed code into the laser cutting machine's operating computer and place it onto the corresponding profile drawing of the support plate using a center-capture positioning method.

[0050] Example 2:

[0051] exist Figure 6 The illustrated embodiment describes a method for high-precision cutting of small blades on a finished saw blade, which specifically includes the following steps:

[0052] Step 1: Process a finished circular saw blade 200 with small blade structures. The finished circular saw blade 200 includes a circular saw blade base 4, on which a plurality of small blade structures 5 are provided. A central hole 41 is provided at the center of the finished circular saw blade 200. Each small blade structure 5 includes a small blade tip 1, a small blade tooth back 2, and a small blade base 3. The small blade base 3 is integrally formed on the circular saw blade base 4 and is to be cut. It also includes multiple sets of positioning holes, which are arranged at a distance near the small blade structures 5, and a small blade arc-shaped support surface 36 formed on the circular saw blade base 4. This arc-shaped support surface 36 does not participate in cutting.

[0053] Step 2: Place a support plate 500 on the laser cutting machine; the support plate is made of large steel plate, and the length and width of the support plate 500 are both ≥1 meter, and the thickness is ≥2.0 mm.

[0054] Create the cutting auxiliary profile 300 on the support plate 500:

[0055] The cutting auxiliary profile 300 is fabricated by cutting a small blade cutting auxiliary profile 300 on a support plate according to the profile of the finished circular saw blade 200. The cutting auxiliary profile 300 includes a central hole 61 in the central support plate and several small blade profiles. The small blade profiles 7 include a cutting path profile groove 71, a support plate hole groove 72, and a support plate positioning hole 73. The central hole 6 is provided at the center of the support plate 500. Cutting path profile grooves 71 corresponding to the positions of each small blade are provided on the support plate 500. The upper part has a roughly U-shaped structure. The width of the cutting path profile groove 71 at the entrance and exit is greater than the width of the rest. The cutting path profile groove 71 at the entrance and exit serves two purposes: to guide the laser head and to support the blade tip. A cutting path idle area 74 is formed at the support plate between two adjacent cutting path profile grooves 71. The support plate is provided with several support plate holes 72 corresponding to the blade tip 1 to protect the blade tip from collision. The support plate holes 72 are roughly elliptical in shape, and support plate positioning holes 73 are provided near the support plate holes 72.

[0056] Step 3: Program the cutting path in the product drawing of the CAM software, apply the computer to the production process of cutting the blade, and thus form the blade production cutting path 400.

[0057] Based on the structure of the small blade 100, a cutting path 400 for the small blade is designed on the finished circular saw blade. A drawing of the cutting path diagram is created using CAD and imported into CAM to set the laser head's tool path. The programmed code is then imported into the laser cutting machine's operating computer and positioned on the corresponding profile of the support plate using a center-capture positioning method. The small blade cutting path 400 includes a tool path inlet 401, multiple actual cutting path units 402, multiple idle path units 403, and a tool path outlet 404.

[0058] The actual cutting path unit 402 includes a cutting path 405 on the inclined support surface of the small blade and a cutting path 406 on the horizontal support surface of the small blade. The idle path unit 403 has a triangular structure. The laser cutter does not perform actual cutting at the cutter path inlet 401, the laser cutter idle path unit 403, and the cutter path outlet 404.

[0059] Step 4: Place the finished circular saw blade 200 directly above the support plate 500 with the cutting auxiliary profile 300. Position the finished circular saw blade 200 by using four positioning holes on the finished circular saw blade and the support plate positioning holes 73 on the support plate 500. The small blade tip 1 avoids the support plate area and is inserted into the support plate slot 72 of the support plate.

[0060] In this embodiment, the positioning method is to use the central hole 41 of the circular saw blade on the finished circular saw blade 200 and the four first positioning holes 31 corresponding to the positioning holes 73 of the support plate, and to embed pins 8 inside the four first positioning holes 31 for positioning.

[0061] like Figure 7 As shown, since the pin 8 needs to be machined to fit the positioning hole, the pin 8 includes an insertion end 81 and an external end 82. The diameter of the external end 82 is larger than the diameter of the insertion end 81. The insertion end needs to be inserted into the positioning hole for positioning. Therefore, the diameter d of the insertion end is controlled within a tolerance of 0 to -0.1 mm of the positioning hole diameter. The diameter D of the external end is 4 mm larger than the d of the insertion end, the length of the external end is controlled at 2.5 ± 0.1 mm, and the length of the insertion end is controlled at 6.0 ± 0.1 mm.

[0062] During positioning, a pin with the same diameter as the first positioning hole 31 on the finished circular saw blade is inserted vertically. The pin passes through the first positioning hole 31 on the finished circular saw blade and the positioning hole 73 on the support plate, thereby achieving the positioning of the finished circular saw blade.

[0063] Step 5: Close the equipment door.

[0064] Step 6: Start the cutting program. The cutting tool cuts multiple small blades 100 at a time along the cutting path 400 of the small blades.

[0065] Step 7: Open the equipment door and take out the multiple small blades 100 that have been processed in one go.

[0066] Example 3:

[0067] In this embodiment, a method for high-precision cutting of small blades on a finished saw blade specifically includes the following steps:

[0068] Step 1: Process a finished circular saw blade 200 with small blade structures. The finished circular saw blade 200 includes a circular saw blade base 4, on which a plurality of small blade structures 5 are provided. A central hole 41 is provided at the center of the finished circular saw blade 200. Each small blade structure 5 includes a small blade tip 1, a small blade tooth back 2, and a small blade base 3. The small blade base 3 is integrally formed on the circular saw blade base 4 and is to be cut. It also includes multiple sets of positioning holes, which are arranged at a distance near the small blade structures 5, and a small blade arc-shaped support surface 36 formed on the circular saw blade base 4. This arc-shaped support surface 36 does not participate in cutting.

[0069] Step 2: Place a support plate 500 on the cutting machine; the support plate is made of large steel plate, and the length and width of the support plate 500 are both ≥1 meter, and the thickness is ≥2.0 mm.

[0070] Create the cutting auxiliary profile 300 on the support plate 500:

[0071] The cutting auxiliary profile 300 is fabricated by cutting a small blade cutting auxiliary profile 300 on a support plate according to the profile of the finished circular saw blade 200. The cutting auxiliary profile 300 includes a central hole 61 in the central support plate and several small blade profiles. The small blade profiles 7 include a cutting path profile groove 71, a support plate hole groove 72, and a support plate positioning hole 73. The central hole 6 is provided at the center of the support plate 500. Cutting path profile grooves 71 corresponding to the positions of each small blade are provided on the support plate 500. The upper part has a roughly U-shaped structure. The width of the cutting path profile groove 71 at the entrance and exit is greater than the width of the rest. The cutting path profile groove 71 at the entrance and exit serves two purposes: to guide the laser head and to support the blade tip. A cutting path idle area 74 is formed at the support plate between two adjacent cutting path profile grooves 71. The support plate is provided with several support plate holes 72 corresponding to the blade tip 1 to protect the blade tip from collision. The support plate holes 72 are roughly elliptical in shape, and support plate positioning holes 73 are provided near the support plate holes 72.

[0072] Step 3: Based on the structure of the small blade 100, design the cutting path 400 for the small blade on the finished circular saw blade. The small blade cutting path 400 includes a blade head path inlet 401, multiple actual cutting path units 402, multiple idle path units 403, and a blade head path outlet 404.

[0073] The actual cutting path unit 402 includes a cutting path 405 on the inclined support surface of the small blade and a cutting path 406 on the horizontal support surface of the small blade. The idle path unit 403 has a triangular structure. The cutter does not perform actual cutting at the cutter path inlet 401, the cutter idle path unit 403, and the cutter path outlet 404.

[0074] Step 4: Place the finished circular saw blade 200 directly above the support plate 500 with the cutting auxiliary profile 300. Position the finished circular saw blade 200 by using four positioning holes on the finished circular saw blade and the support plate positioning holes 73 on the support plate 500. The small blade tip 1 avoids the support plate area and is inserted into the support plate slot 72 of the support plate.

[0075] In this embodiment, the positioning method is to use the central hole 41 of the circular saw blade on the finished circular saw blade 200 and the four first positioning holes 31 corresponding to the positioning holes 73 of the support plate, and to embed pins 8 inside the four first positioning holes 31 for positioning.

[0076] Step 5: Adjust the positioning accuracy using the X and Y axes as references;

[0077] Step 6: Tool cutting: Control the cutting tool to cut and shape multiple small blades 100 at one time along the small blade production cutting path 400.

[0078] Example 4:

[0079] In this embodiment, a method for high-precision cutting of small blades on a finished saw blade specifically includes the following steps:

[0080] Step 1: Process a finished circular saw blade 200 with small blade structures. The finished circular saw blade 200 includes a circular saw blade base 4, on which a plurality of small blade structures 5 are provided. A central hole 41 is provided at the center of the finished circular saw blade 200. Each small blade structure 5 includes a small blade tip 1, a small blade tooth back 2, and a small blade base 3. The small blade base 3 is integrally formed on the circular saw blade base 4 and is to be cut. It also includes multiple sets of positioning holes, which are arranged at a distance near the small blade structures 5, and a small blade arc-shaped support surface 36 formed on the circular saw blade base 4. This arc-shaped support surface 36 does not participate in cutting.

[0081] Step 2: Place a support plate 500 on the cutting machine; the support plate is made of large steel plate, and the length and width of the support plate 500 are both ≥1 meter, and the thickness is ≥2.0 mm.

[0082] Create the cutting auxiliary profile 300 on the support plate 500:

[0083] The cutting auxiliary profile 300 is fabricated by cutting a small blade cutting auxiliary profile 300 on a support plate according to the profile of the finished circular saw blade 200. The cutting auxiliary profile 300 includes a central hole 61 in the central support plate and several small blade profiles. The small blade profiles 7 include a cutting path profile groove 71, a support plate hole groove 72, and a support plate positioning hole 73. The central hole 6 is provided at the center of the support plate 500. Cutting path profile grooves 71 corresponding to the positions of each small blade are provided on the support plate 500. The upper part has a roughly U-shaped structure. The width of the cutting path profile groove 71 at the entrance and exit is greater than the width of the rest. The cutting path profile groove 71 at the entrance and exit serves two purposes: to guide the laser head and to support the blade tip. A cutting path idle area 74 is formed at the support plate between two adjacent cutting path profile grooves 71. The support plate is provided with several support plate holes 72 corresponding to the blade tip 1 to protect the blade tip from collision. The support plate holes 72 are roughly elliptical in shape, and support plate positioning holes 73 are provided near the support plate holes 72.

[0084] Step 3: Based on the structure of the small blade 100, design the cutting path 400 for the small blade on the finished circular saw blade. The small blade cutting path 400 includes a blade head path inlet 401, multiple actual cutting path units 402, multiple idle path units 403, and a blade head path outlet 404.

[0085] The actual cutting path unit 402 includes a cutting path 405 on the inclined support surface of the small blade and a cutting path 406 on the horizontal support surface of the small blade. The idle path unit 403 has a triangular structure. The cutter does not perform actual cutting at the cutter path inlet 401, the cutter idle path unit 403, and the cutter path outlet 404.

[0086] Step 4: Place the finished circular saw blade 200 directly above the support plate 500 with the cutting auxiliary profile 300. Position the finished circular saw blade 200 by using four positioning holes on the finished circular saw blade and the support plate positioning holes 73 on the support plate 500. The small blade tip 1 avoids the support plate area and is inserted into the support plate slot 72 of the support plate.

[0087] In this embodiment, the positioning method is to use the central hole 41 of the circular saw blade on the finished circular saw blade 200 and the four first positioning holes 31 corresponding to the positioning holes 73 of the support plate, and to embed pins 8 inside the four first positioning holes 31 for positioning.

[0088] Step 5: Adjust the positioning accuracy according to the workstation and the X and Y axes as references;

[0089] Step 6: Start the laser cutting machine to cut and complete the small blade cutting process.

[0090] The method for high-precision cutting of small blades on a finished saw blade as described in the above embodiments achieves high-precision and high-efficiency cutting by utilizing either cutting tools or laser cutting. Multi-hole positioning and the insertion of custom bolts for fixation, along with the setting of a cutting auxiliary contour on the support plate, effectively prevent the blade tip from colliding with the cut blade and effectively support the cut blade while avoiding contact between the cutting tool or laser cutting blade and the support plate. The laser cutting path of the small blade is pre-set to ensure that the cutting path perfectly matches the design profile required by the small blade; the reasonable setting of the cutting path allows for rapid completion of the cutting operation and effectively avoids collisions with the positioning custom bolts.

[0091] This method of high-precision cutting of small blades on finished saw blades fully protects the sharpness of the blade tip after fine grinding. A support plate with an auxiliary cutting profile (partially hollowed out) supports the finished circular saw blade before cutting and the small blade after cutting. The cut small blade can be well supported on the support plate without changing position and will not be damaged by metal slag from the cutting tool or laser beam.

[0092] Sufficient space is reserved in the blade head area and cutting path area to allow the cutting tool or laser beam to move unimpeded, while the blade head is fully protected from impacts. This ensures that the cutting tool or laser beam can move unimpeded at the blade exit point, preventing the reverse side of the blade from being burned. Four far-positioning holes, along with specific bolts, are used for physical positioning, ensuring that the cutting path of the blade perfectly matches the actual profile of the blade.

[0093] Using both blade cutting and laser cutting saves the time spent on frequent wire threading and tool setting in wire cutting. Simultaneously, leveraging the high efficiency of laser cutting significantly increases the yield of small blades. The small blade is connected to the finished circular saw blade by inclined and horizontal support surfaces. During cutting, only two support surfaces need to be cut to complete the final shape of the small blade, greatly improving product quality. Using either blade cutting or laser cutting, the blade is cut along the auxiliary cutting contour and the production cutting path to obtain the designed small blade. The blade's profile remains unchanged, and multiple small blades can be cut at once. Furthermore, the curved support surface of the small blade does not participate in cutting during actual application; the roughness of the actual cut surface has no impact on the quality of use. The small blade exhibits good positioning and high precision during use.

[0094] The above embodiments are only some embodiments of the present invention, and not all embodiments. Furthermore, based on the embodiments described in this invention, all other embodiments obtained by those skilled in the art without inventive effort and based on the technical solutions of this application should fall within the scope of protection of this invention.

Claims

1. A method for processing a small blade, characterized in that: The blade includes a blade tip, a blade tooth back, and a blade base. A positioning hole is provided on the blade base, and a machined arc-shaped support surface is also provided on the blade base. The blade is formed in one cut by a circular saw blade, and the inclined support surface and the horizontal support surface are formed in a single cut. The specific steps are as follows: Step 1: Process the finished circular saw blade (200) with small blade structure. Multiple small blade structures (5) are formed on the finished circular saw blade (200) in one process. The small blade structure includes small blade head, small blade tooth back, positioning hole, arc support surface, and small blade base to be cut integrally formed on the circular saw blade base. Step 2: Make a cutting auxiliary profile (300) on the support plate (500); cut a small blade cutting auxiliary profile on the support plate according to the profile of the finished circular saw blade. The cutting auxiliary profile includes several small blade profiles; the small blade profile includes a cutting path profile groove, several support plate hole grooves and support plate positioning holes; the support plate hole grooves are set on the support plate at the corresponding blade head position; Step 3: Program the cutting path in the product drawing of the CAM software and form the small blade production cutting path (400) on the finished circular saw blade (200). Step 4: Place the finished circular saw blade (200) with the small blade producing the cutting path (400) on the cutting auxiliary profile (300); Step 5: Start the cutting tool. The cutting tool cuts along the small blade production cutting path (400) in one go to form multiple small blades (100).

2. The method for processing a small blade according to claim 1, characterized in that: The cutting auxiliary profile (300) also includes a support plate center hole (6).

3. The method for processing a small blade according to claim 1, characterized in that: The small blade production cutting path (400) described in step 3 includes a blade head cutting path inlet (401), multiple actual cutting path units (402), multiple idle path units (403), and a blade head cutting path outlet (404).

4. The method for processing a small blade according to claim 1, characterized in that: Step 3 is to design and draw the cutting path diagram of the small blade on the finished circular saw blade (200) according to the structure of the small blade (100). After the small blade production cutting path (400) is edited, the small blade production cutting path diagram is imported into CAM, the cutting path is set, the program is imported into the laser cutting machine operating computer, and the corresponding cutting auxiliary profile (300) of the support plate is placed on the support plate using the center snap positioning method.

5. The method for processing a small blade according to claim 1, characterized in that: In step 4, the finished circular saw blade (200) with the small blade producing the cutting path (400) is placed directly above the cutting auxiliary profile (300) on the support plate; in step 5, the cutting tool is cut with a knife or laser.

6. The method for processing a small blade according to any one of claims 1 to 5, characterized in that: The small blade tip (1) is arranged along the same arc in the cutting direction.

7. The method for processing a small blade according to any one of claims 1 to 5, characterized in that: The small blade head (1) is arranged in a staggered structure in the cutting direction, and the staggered angle between two adjacent small blade heads (1) is 5-10 degrees.

8. The method for processing a small blade according to any one of claims 1 to 5, characterized in that: The inclined support surface (34), horizontal support surface (35) and arc-shaped support surface (36) together form the mounting profile of the blade.

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