Cutting edge passivation methods and passivation mechanisms

Abstract

A method and mechanism for blunting the cutting edge of a cutting tool are disclosed. The method includes: providing a blunting mechanism comprising an air pump, a first sputtering gun, a second sputtering gun, a moving component, and an adjusting component; determining the pressure of compressed gas within the air pump; filling a hopper with elastic abrasive; obtaining the tool's specifications; clamping the tool; inputting the specifications; adjusting the sputtering angles between the first and second sputtering guns and the tool, and the sputtering distances between the corresponding sputtering nozzles and the tool; rotating the tool; the first and second sputtering guns using a preset high-pressure sputtering pressure provided by the air pump to sputter the abrasive from their respective sputtering nozzles onto the cutting edge of the rotating tool; the moving component driving the adjusting component, the first and second sputtering guns to reciprocate at a preset speed until a preset sputtering time is reached; stopping the blunting process; and removing the blunted tool. This method achieves uniform axial blunting of the cutting edge, improving tool performance and lifespan.

Description

Technical Field

[0001] This application relates to the field of cutting tool processing technology, specifically to a method and mechanism for blunting the cutting edge of a cutting tool. Background Technology

[0002] With the continuous expansion of cutting applications, the emergence of more and more difficult-to-machine materials, and the increasing demands of users for tool durability, the overall wear resistance requirements for tools are becoming increasingly stringent. Tool coatings, as a type of mechanically hard film, possess excellent thermal stability, high oxidation resistance, high hardness, and a low coefficient of friction due to their unique structure, thus significantly improving tool life. The tool coating process is roughly as follows: raw material powder is sintered into a tool substrate rod; the tool substrate rod is then ground with a grinding wheel and post-processed to become a blank tool; the blank tool is then coated with a hard coating using PVD technology to become a coated tool. During the PVD coating process, the coating on the entire cutting edge (including the rake face, cutting edge, and flank face) grows almost uniformly. If the blank tool's cutting edge is uniform before coating, it will also be uniform after coating; conversely, if the blank tool's cutting edge is uneven before coating, it will still be uneven after coating. White blades are made by grinding a base rod with a grinding wheel and then processing it. Since the grinding wheel is made of tiny, hard particles bonded together, when machining the front and back faces, it is essentially countless tiny hard particles grinding, thus creating burrs at the junction of the front and back faces (i.e., the cutting edge). To improve the strength of the cutting edge and to ensure better adhesion of the coating in the subsequent processing stage, it is necessary to polish and remove the burrs and passivate the cutting edge.

[0003] Currently, the pre-coating process for blunting the cutting edge of cutting tools involves agitated walnut shell passivation. Its main function is to remove burrs from the cutting edge and dull the surface. The agitated walnut shell passivation process involves clamping the tool into a three-dimensional rotating turntable, leaving the cutting edge to be dulled exposed. A lifting device then inserts the entire cutting edge into a sand tray containing walnut shell sand. The turntable is then activated, and the cutting edge rotates within the sand. After a set rotation time, the dulling process is complete. However, because the insertion depth into the sand varies at different axial positions of the cutting edge during dulling, the friction between the cutting edge and the sand varies, resulting in inconsistent radius (R) angles at different axial positions of the cutting edge after dulling. This leads to inconsistent cutting edges after coating, affecting tool performance and lifespan. Summary of the Invention

[0004] In view of the above, it is necessary to propose a cutting edge passivation method and passivation mechanism to achieve uniform axial passivation of the cutting edge, thereby improving tool performance and life.

[0005] This application provides a method for blunting the cutting edge of a cutting tool. The method includes: providing a blunting mechanism, the blunting mechanism including a clamping member, a material bin, a moving member, an adjusting member, a first nozzle, a second nozzle, an air pump, and a controller. The clamping member, the material bin, and the moving member are spaced apart from each other. The adjusting member is installed on the moving member. The first nozzle and the second nozzle are both installed on the adjusting member and face the clamping member. The first nozzle and the second nozzle are both connected to the material bin and the air pump. The controller is coupled to the clamping member, the moving member, the adjusting member, the first nozzle, the second nozzle, and the air pump. The method involves: determining whether the pressure of the compressed gas in the air pump meets a preset pressure; if not, adjusting the pressure of the compressed gas in the air pump to the preset pressure; filling the material bin with elastic abrasive; and obtaining the specifications of the cutting tool whose cutting edge is to be blunted based on the machining purpose of the cutting tool. The specifications include at least one of the following: total tool length, cutting edge length, cutting edge profile, rake angle, clearance angle, and edge radius (R angle). The process involves: clamping the tool with the cutting edge to be blunted into the clamping device; inputting the specification parameters and obtaining the input specification parameters through the controller; adjusting the angles between the first and second sputtering guns and the axis of the tool to a preset sputtering angle according to the specification parameters; adjusting the distances between the sputtering ports of the first and second sputtering guns and the tool to a preset sputtering distance according to the specification parameters; rotating the tool at a preset rotational speed according to the specification parameters; sputtering the abrasive from its respective sputtering port onto the cutting edge of the rotating tool using a preset sputtering high pressure provided by the air pump according to the specification parameters; synchronously reciprocating the adjusting device, the first sputtering gun, and the second sputtering gun at a preset speed in a direction parallel to the axis of the tool until a preset sputtering time is reached according to the specification parameters; stopping the blunting process based on reaching the preset sputtering time; and removing the blunted tool from the clamping device.

[0006] This application embodiment also provides a tool edge blunting mechanism, the blunting mechanism comprising: a clamping member for clamping a tool and driving the tool to rotate; a material bin spaced apart from the clamping member, the material bin for containing elastic abrasive; a first ejector and a second ejector, both mounted on an adjusting member and facing the clamping member, the adjusting member being mounted on a movable member; the first ejector and the second ejector both communicating with the material bin and an air pump; the adjusting member adjusting the angles between the first ejector and the second ejector and the axis of the tool to a preset sputtering angle; and the movable member adjusting the distances between the sputtering nozzles of the first ejector and the second ejector and the tool to a preset sputtering distance. The moving component also drives the adjusting component, the first gun, and the second gun to reciprocate synchronously at a preset speed in a direction parallel to the axis of the tool. The first gun and the second gun, under a preset sputtering high pressure provided by the air pump, sputter the abrasive from the sputtering port of the first gun and the sputtering port of the second gun onto the cutting edge of the tool, respectively. The controller is used to acquire the input specifications of the tool. The controller is coupled to the clamping component, the moving component, the adjusting component, the first gun, the second gun, and the air pump. The specifications include at least one of the following: total tool length, cutting edge length, tool profile, rake angle, clearance angle, and edge radius (R angle).

[0007] When using the aforementioned tool edge passivation method and mechanism to passivate the tool edge, due to the elasticity of the abrasive, under the preset high-pressure sputtering provided by the air pump, the abrasive is sputtered from the corresponding sputtering ports of the first and second sputtering guns onto the tool edge (simultaneously sputtering onto the rake and flank faces of the tool), causing elastic deformation. During this elastic deformation, the abrasive slides and rubs against the edge surface, grinding the edge and achieving passivation. Since the angles and distances between the first and second sputtering guns and the tool's axis are preset sputtering angles and distances, thus... The abrasive sputtered by the corresponding sputtering nozzles of the first and second sputtering guns exerts a uniform force on the cutting edge of the tool. During the reciprocating movement of the moving component, the adjusting component, the first and second sputtering guns, the first and second sputtering guns perform a comprehensive scanning sputtering of the entire cutting edge of the tool. The pressure generated by the abrasive collision at any position along the cutting edge is uniform, thereby achieving a uniform axial blunting effect on the cutting edge. Since the cutting edge is uniform after blunting, the cutting edge of the tool remains uniform after coating, eliminating the impact of uneven blunting on coating adhesion and the performance of the coated tool, thereby improving the performance and life of the tool. Attached Figure Description

[0008] Figure 1 This is a schematic flowchart of the tool edge dulling method provided in the embodiments of this application.

[0009] Figure 2 This is a schematic diagram of the structure of the cutting tool with the cutting edge to be dulled provided in the embodiment of this application.

[0010] Figure 3a yes Figure 2 A schematic diagram of the structure of a cutting tool before the cutting edge is dulled.

[0011] Figure 3b yes Figure 2 A schematic diagram of the structure of a cutting tool after the cutting edge has been dulled.

[0012] Figure 4 This is a schematic diagram of the cutting edge blunting mechanism provided in the embodiments of this application.

[0013] Figure 5 This is a cross-sectional schematic diagram of the abrasive provided in the embodiments of this application.

[0014] Figure 6 This is a comparison chart of the distribution of the measured values ​​of the R-angle of the cutting edge after passivation in Example 1 and the measured values ​​of the R-angle of the cutting edge after passivation in the stirred walnut shell.

[0015] Figure 7 This is a magnified electron microscope diagram showing the R-angle of the cutting edge after passivation in Example 1 and the R-angle of the cutting edge after passivation with stirring-type walnut sand.

[0016] Figure 8 This is a comparison chart of the distribution of the measured values ​​of the R-angle of the cutting edge after passivation in Example 2 and the measured values ​​of the R-angle of the cutting edge after passivation in the stirred walnut shell.

[0017] Figure 9 This is a magnified electron microscope diagram showing the R-angle of the cutting edge after passivation and the R-angle of the cutting edge after passivation with stirred walnut shells in Example 2.

[0018] Figure 10 This is a comparison chart of the distribution of the measured values ​​of the R-angle of the cutting edge after passivation in Example 3 and the measured values ​​of the R-angle of the cutting edge after passivation in the stirred walnut shell.

[0019] Figure 11 This is a magnified electron microscope diagram showing the R-angle of the cutting edge after passivation and the R-angle of the cutting edge after passivation with stirred walnut shells in Example 3.

[0020] Figure 12 This is a comparison chart showing the distribution of the measured values ​​of the R-angle of the cutting edge after passivation in Example 4 and the measured values ​​of the R-angle of the cutting edge after passivation with stirred walnut shells as the processing time increases.

[0021] Explanation of main component symbols

[0022] Passivation mechanism 100

[0023] 10 clamping parts

[0024] 20 silos

[0025] Moving part 30

[0026] Adjustment component 40

[0027] First shot 50

[0028] Second shot 60

[0029] Air pump 70

[0030] Air blowing component 80

[0031] Turntable 90

[0032] Rotation axis 92

[0033] Controller 110

[0034] 200 knives

[0035] Tool axis 201

[0036] Cutting part 202

[0037] Blade 204

[0038] 2042 front face

[0039] 2044 blade edge

[0040] 2046 back face

[0041] Chip removal groove 206

[0042] Handle 208

[0043] Abrasive 300

[0044] Ontology 302

[0045] Micronized 304 Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0048] Please see Figure 1As shown in the diagram, this application provides a flowchart of a tool edge dulling method. The tool edge dulling method is used to dull the cutting edge of a tool and achieve uniform axial dulling of the cutting edge. The tool can be an end mill, ball nose cutter, ball end mill, drill bit, tap, T-slot cutter, contour cutter, or other similar cutting tools; it can also be a milling cutter, milling insert, or other similar insert type; or it can be a circular saw blade, etc. Please refer to... Figure 2 As shown, in this embodiment, the tool 200 is an end mill. The tool 200 includes a cutting section 202 and a tool holder 208 connected to the cutting section 202. The cutting section 202 includes a cutting edge 204 and a chip removal groove 206. Please refer to [link to documentation]. Figure 3a and Figure 3b As shown, the cutting edge 204 includes a rake face 2042, a cutting edge 2044, and a flank face 2046 connected in sequence. The cutting edge 2044 has an R-angle after being blunted. Figure 3a and Figure 3b All of these are sections of the cutting edge 204 perpendicular to the tool axis 201. Figure 3a This is a schematic diagram of the cutting edge 2044 before passivation. Figure 3b This is a schematic diagram of the 2044 cutting edge after passivation.

[0049] Figure 1 This is a flowchart illustrating the tool edge passivation method provided in the embodiments of this application, combined with... Figure 4 As shown, the tool edge dulling method includes the following steps:

[0050] Step S1, provide a passivation mechanism 100.

[0051] In this embodiment, the passivation mechanism 100 includes clamping members 10, a hopper 20, and a moving member 30 arranged at intervals between each other; an adjusting member 40 mounted on the moving member 30; a first firing gun 50 and a second firing gun 60 mounted on the adjusting member 40 and respectively facing the clamping member 10; an air pump 70 respectively connected to the first firing gun 50 and the second firing gun 60; an air blowing member 80 connected to the air pump 70 and facing the clamping member 10; a turntable 90 on which multiple clamping members 10 are mounted; and a controller 110 respectively coupled to the clamping member 10, the moving member 30, the adjusting member 40, the first firing gun 50, the second firing gun 60, the air pump 70, the air blowing member 80, and the turntable 90.

[0052] The clamping member 10 is used to clamp the tool holder 208 of the cutting tool 200 to fix the cutting tool 200, and leaves the cutting part 202 of the cutting tool 200 exposed to facilitate the blunting treatment of the cutting edge 2044. The clamping member 10 is also used to drive the cutting tool 200 to rotate around the cutting tool axis 201. In this embodiment, the clamping member 10 can be composed of a motor, a sleeve, or other mechanisms. By inserting the tool holder 208 of the cutting tool 200 into the sleeve, the sleeve fixes the tool holder 208 of the cutting tool 200, and the motor drives the sleeve to rotate, thereby achieving the effect of the cutting tool 200 rotating. It can be understood that in other embodiments, the clamping member 10 can also be other mechanisms that can fix the cutting tool 200 and drive the cutting tool 200 to rotate. It should be noted that when the first firing gun 50, the second firing gun 60, and the air blowing component 80 face the clamping member 10, they also face the cutting tool 200 clamped on the clamping member 10.

[0053] The hopper 20 is used to hold the elastic abrasive 300 (see also...). Figure 5 As shown, the feed bin 20 is connected to the first sputtering gun 50 and the second sputtering gun 60 respectively. The first sputtering gun 50 and the second sputtering gun 60 use the preset sputtering high pressure provided by the air pump 70 to sputter the abrasive 300 in the feed bin 20 from their respective sputtering ports onto the cutting edge 2044 of the rotating tool 200. Since the abrasive 300 is elastic, it will undergo elastic deformation when it collides with the rake face 2042, the cutting edge 2044 and the flank face 2046 of the cutting edge 204. During the elastic deformation of the abrasive 300, the abrasive 300 performs sliding friction on the surface of the cutting edge 2044. Through the sliding friction of the abrasive 300 on the surface of the cutting edge 2044, the cutting edge 2044 is dulled.

[0054] In this embodiment, the moving component 30 drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to move synchronously closer to or away from the cutter 200, so as to adjust the distance between the sputtering nozzles of the first spray gun 50 and the second spray gun 60 and the cutter 200, respectively. The moving component 30 can also drive the adjusting component 40, the first spray gun 50, and the second spray gun 60 to reciprocate synchronously in a direction parallel to the cutter axis 201. In this embodiment, the moving component 30 can be a dual-axis linear module. One of the dual-axis linear modules drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to move synchronously closer to or away from the cutter 200, and the other of the dual-axis linear module drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to reciprocate synchronously in a direction parallel to the cutter axis 201.

[0055] In this embodiment, the adjusting member 40 may be composed of a motor, at least two meshing gears, etc. The first gun 50 and the second gun 60 are respectively connected to the two meshing gears. The motor drives the two gears to rotate, and the two gears drive the first gun 50 and the second gun 60 to rotate to adjust the sputtering angle between the first gun 50 and the second gun 60 and the tool axis 201 of the tool 200.

[0056] In this embodiment, the air blowing component 80 can be an air nozzle and connected to the air pump 70. The air blowing component 80 blows air onto the cutting edge 204 of the tool 200 with a preset blowing pressure provided by the air pump 70 to blow off the abrasive 300 on the cutting edge 204 of the tool 200. At the same time, the air blowing component 80 can also blow away the abrasive 300 on the clamping component 10.

[0057] In this embodiment, multiple clamping members 10 are evenly distributed on the turntable 90 around the rotation axis 92. By arranging a ring of clamping members 10 at intervals on the turntable 90, after the tool 200 on one of the clamping members 10 is passivated, the turntable 90 drives the passivated tool 2044 on one of the clamping members 10 to rotate around the rotation axis 92 of the turntable 90 at a predetermined angle. This causes the tool 200 with the passivated cutting edge 2044 on another adjacent clamping member 10 to face the first gun 50 and the second gun 60 for further passivation. Thus, the passivation mechanism 100 can achieve continuous operation, improving the production efficiency of the tool 200. For example, if 18 clamping members 10 are evenly distributed on the turntable 90, the predetermined angle of rotation of the turntable 90 each time is 20°.

[0058] Step S2: Determine whether the pressure of the compressed gas in the air pump 70 meets the preset pressure. If not, adjust the pressure of the compressed gas in the air pump 70 to the preset pressure.

[0059] In this embodiment, the preset pressure range of the compressed gas in the air pump 70 is 1 bar to 4 bar, so that the air pump 70 can provide compressed gas to the first gun 50, the second gun 60, and the blowing component 70 respectively. It can be understood that in step S2, if the pressure of the compressed gas in the air pump 70 meets the preset pressure, then step S3 is executed without adjusting the pressure of the compressed gas in the air pump 70.

[0060] Step S3: Fill the hopper 20 with 300g of elastic abrasive.

[0061] In this embodiment, please refer to Figure 5The cross-sectional schematic diagram of the abrasive 300 shown illustrates that the abrasive 300 includes a body 302 and micropowder 304 adhered to the outside of the body 302. The body 302 is made of elastic polyurethane material, while the micropowder 304 is made of hard materials such as diamond, alumina, and silicon carbide. Because the body 302 is elastic, the abrasive 300 itself is also elastic, causing elastic deformation when it collides with the cutting edge 2044. This results in sliding friction between the abrasive 300 and the surface of the cutting edge 2044, increasing the contact area between them. Since the micropowder 304 on the surface of the abrasive 300 is a hard material, it grinds the surface of the cutting edge 2044, thus producing a grinding effect and achieving passivation of the cutting edge 2044 surface. In this embodiment, the weight of the abrasive 300 filled in the hopper 20 ranges from 2 kg to 3 kg. In this embodiment, the weight of the abrasive 300 filled in the hopper 20 is 2.5 kg.

[0062] In this embodiment, the diameter of the abrasive 300 ranges from 0.2mm to 4mm, for example, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, etc., and the diameter of the micro powder 304 ranges from 0.5μm to 10μm, for example, 0.5μm, 1μm, 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, etc. By limiting the diameter ranges of the abrasive 300 and the micro powder 304, on the one hand, the abrasive 300 effectively impacts the surface of the cutting edge 2044, and on the other hand, the abrasive 300 produces a better grinding effect on the surface of the cutting edge 2044. In this embodiment, the diameter of the abrasive 300 is 1.5mm, and the diameter of the micro powder 304 is 2μm. It is understandable that, in order to achieve the adhesive bonding between the body 302 and the micro powder 304, the outer surface of the body 302 is treated with a coupling agent before being adhered to the micro powder 304. The surface treatment of the outer surface of the body 302 with a coupling agent enhances the adhesion between the body 302 and the micro powder 304. The coupling agent can be a silane coupling agent, titanate coupling agent, aluminate coupling agent, metal composite coupling agent, phosphate coupling agent, borate coupling agent, etc.

[0063] Step S4: Obtain the specification parameters of the tool 200 whose cutting edge 2044 is to be dulled by the machining purpose of the tool 200.

[0064] In this embodiment, the specifications of the cutting tool 200 include at least one of the following: total tool length, cutting edge length, cutting edge shape, rake angle, clearance angle, and edge radius. It can be understood that when machining the cutting tool 200, the purpose of machining it is to process the base bar into a tool 200 with a preset length, preset cutting edge length, preset cutting edge shape, and preset cutting edge. These parameters are determined at the beginning of machining the base bar; therefore, the specifications of the cutting tool 200 can be obtained through its machining purpose. Furthermore, when obtaining the specifications of the cutting tool 200 with the cutting edge 2044 to be passivated, the operator or a photographic device, such as a CCD camera, can also confirm whether the cutting tool 200 has defects such as adhesion or edge chipping. If the cutting tool 200 has defects such as adhesion or edge chipping, it will be cleaned before passivation, or the cutting tool 200 will be recycled and a new cutting tool 200 with the cutting edge 2044 to be passivated will be obtained.

[0065] Step S5: Clamp the tool 200 with the cutting edge 2044 to be blunted onto the clamping part 10.

[0066] In this embodiment, after obtaining the specifications of the tool 200 and confirming that the tool 200 has no defects such as adhesion or chipping of the cutting edge, the tool holder 208 of the tool 200 whose cutting edge 2044 is to be blunted is inserted into the clamping member 10 so that the tool 200 is fixed on the clamping member 10.

[0067] Step S6: Input the specification parameters and obtain the input specification parameters through the controller 110.

[0068] In this embodiment, specification parameters can be input via an input device and transmitted to the controller 110, whereby the controller 110 acquires the specification parameters. These parameters can be input to the controller 110 via an input device such as a keyboard or touchscreen. The specification parameters include the overall tool length, cutting edge length, tool profile, rake angle, clearance angle, and edge radius (R-angle). After acquiring the input specification parameters, the controller 110 generates parameters for passivating the cutting edge 2044 of the tool 200 based on empirical data stored within the controller 110. This empirical data can be understood as data used for passivating the cutting edges of various specifications of tools 200, obtained through experimental data and data accumulated in actual production. It is understood that when implementing the cutting edge passivation method provided in the embodiments of this application, the empirical data corresponding to various cutting tools can be stored in the controller 110. After obtaining the specification parameters of the cutting tool 200, the controller 110 can generate parameters for passivating the cutting edge 2044 based on the stored empirical data and control each mechanism to execute its corresponding steps based on the parameters for passivating the cutting edge 2044. In this embodiment, the parameters used to passivate the cutting edge 2044 of the tool 200 include: angle adjustment parameters for adjusting the angle between the first gun 50 and the second gun 60 and the tool axis 201 to a preset sputtering angle; distance adjustment parameters for adjusting the distance between the sputtering port of the first gun 50 and the sputtering port of the second gun 60 and the tool 200 to a preset sputtering distance; a preset rotation speed at which the clamping member 10 drives the tool 200 to rotate; a preset sputtering high pressure provided by the air pump 70 for the first gun 50 and the second gun 60 to sputter abrasive 300 onto the cutting edge 2044 of the tool 200; a preset speed for the reciprocating movement of the adjusting member 40, the first gun 50 and the second gun 60; and a preset sputtering time, etc., wherein the preset sputtering time can also be understood as the time for the first gun 50 and the second gun 60 to sputter abrasive 300 onto the cutting edge 2044 of the tool 200. The controller 110 further controls the corresponding clamping component 10, moving component 30, adjusting component 40, first firing gun 50, second firing gun 60, air pump 70, air blowing component 80, turntable 90 and other mechanisms to perform their respective steps according to the parameters generated for blunting the cutting edge 2044 of the tool 200.In some embodiments, the controller 110 may be a general-purpose central processing unit (CPU), a digital signal processor (DSP), a micro controller unit (MCU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), a state machine, an ARM-based processor, and the like.

[0069] Step S7: According to the specifications, the adjusting component 40 adjusts the angles between the first gun 50 and the second gun 60 and the tool axis 210 to the preset splashing angle.

[0070] In this embodiment, the controller 110 retrieves stored experience data based on the tool cutting edge type, rake angle, and clearance angle in the specification parameters to generate angle adjustment parameters for the cutting edge 2044 of the tool 200 for passivation. The controller then controls the adjustment component 40 according to these angle adjustment parameters. The adjustment component 40 adjusts the angles between the first and second spray guns 50 and the tool axis 201 to a preset sputtering angle. In this embodiment, the preset sputtering angle is 45°. In this embodiment, the angles between the first and second spray guns 50 and the tool axis 201 of the tool 200 are defined as follows: and and They can be the same or different. and The range is 10°-60°, such as 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. The specific value can be set according to the actual situation.

[0071] In this embodiment, the first spray gun 50 can be aligned with the rake face 2042 of the tool 200, and the second spray gun 60 can be aligned with the flank face of the tool 200. The abrasive 300 sprayed by the first spray gun 50 and the abrasive 300 sprayed by the second spray gun 60 are cross-sprayed onto the cutting edge 2044. Specifically, step S7 can also be: the adjusting member 40 adjusts the angle between the first spray gun 50 and the second spray gun 60 and the tool axis 210 to a preset spray angle according to the specification parameters, and the first spray gun 50 is aligned with the rake face 2042 of the tool 200, and the second spray gun 60 is aligned with the flank face 2046 of the tool 200.

[0072] Step S8: According to the specifications, the moving part 30 adjusts the distance between the splash nozzle of the first gun 50 and the splash nozzle of the second gun 60 and the cutter 200 to the preset splash distance.

[0073] In this embodiment, the controller 110 retrieves stored experience data based on the tool cutting edge profile in the specification parameters to generate distance adjustment parameters for dulling the cutting edge 2044 of the tool 200. The controller then controls the moving component 30 according to these distance adjustment parameters. The moving component 30 adjusts the distances between the splash nozzles of the first and second spray guns 50 and the tool 200 to a preset splash distance. In this embodiment, the preset splash distance is 50mm. It can be understood that the distance between the splash nozzles of the first and second spray guns 50 and the tool 200 along the direction perpendicular to the tool axis 201 is L, and the range of distance L is 30mm-80mm, for example, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, etc., which can be set according to actual conditions. By limiting the distance range between the first gun 50 and the second gun 60 and the cutter 200, it is ensured that the first gun 50 and the second gun 60 can concentrate the abrasive 300 onto the cutting edge 2044 of the cutter 200, thus avoiding excessive dispersion of the abrasive 300 during the process of splashing from the first gun 50 and the second gun 60 onto the cutting edge 2044, thereby reducing the impact force.

[0074] In this embodiment, the sputtering ports of the first gun 50 and the second gun 60 are respectively provided with chamfers. By providing chamfers at each sputtering port, the abrasive 300 is sputtered out from each sputtering port in a divergent manner, so as to sputter more comprehensively and evenly onto the cutting edge 2044 of the tool 200.

[0075] It is understood that in other embodiments, the order of steps S7 and S8 may be interchanged.

[0076] In step S9, according to the specifications, the clamping component 10 drives the tool 200 to rotate at a preset rotation speed.

[0077] In this embodiment, the preset rotational speed at which the clamping member 10 drives the tool 200 to rotate is 3.6 r / s. It can be understood that the rotational speed range of the clamping member 10 driving the tool 200 to rotate is 1 r / s to 5 r / s, and can be set according to actual conditions. By limiting the rotational speed range of the tool 200, when the clamping member 10 cooperates with the first firing gun 50 and the second firing gun 60, it can ensure that the sputtered abrasive 300 forms a comprehensive scanning sputtering effect on the cutting edge 2044, thereby improving the passivation effect of the cutting edge 2044.

[0078] In step S10, according to the specifications, the first gun 50 and the second gun 60 use the preset sputtering high pressure provided by the air pump 70 to sputter the abrasive 300 from their respective sputtering ports onto the cutting edge 2044 of the rotating tool 200.

[0079] In this embodiment, the preset sputtering high pressure is 2 bar. In this embodiment, the preset sputtering high pressure is the pressure at which the first sputtering gun 50 and the second sputtering gun 60 sputter the abrasive 300 from their respective sputtering nozzles, and is provided by the air pump 70. It can be understood that the range of the sputtering high pressure is 1 bar to 4 bar, and the specific pressure can be set according to the actual situation.

[0080] In step S11, according to the specifications, the moving part 30 drives the adjusting part 40, the first gun 50 and the second gun 60 to move synchronously back and forth at a preset speed in a direction parallel to the tool axis 210 until the preset splashing time is reached.

[0081] In this embodiment, the preset speed is 20 mm / s. It can be understood that the speed range of the synchronous reciprocating movement of the adjusting member 40, the first gun 50, and the second gun 60 is 10 mm / s-30 mm / s, which can be set according to the actual situation. By limiting the translational speed range of the first gun 50 and the second gun 60, the abrasive 300 sprayed by the first gun 50 and the second gun 60 can form a comprehensive scanning spray on the cutting edge 2044, which is beneficial to improving the passivation effect.

[0082] In this embodiment, the preset sputtering time is 20 seconds. By limiting the preset sputtering time of the abrasive 300 sputtered by the first sputtering gun 50 and the second sputtering gun 60, the phenomenon of insufficient or excessive passivation is avoided.

[0083] Step S12: Stop passivation based on reaching the preset sputtering time.

[0084] In this embodiment, when the preset sputtering time is reached, the clamping part 10 of the passivation mechanism 100, the first gun 50, and the second gun 60 stop working.

[0085] In step S13, based on the stop passivation, the air blowing component 80 blows air onto the cutting edge 2044 of the tool 200 at a preset blowing pressure provided by the air pump 70.

[0086] In this embodiment, after the clamping member 10 of the passivation mechanism 100 stops rotating, and the first and second sputtering guns 50 and 60 stop sputtering abrasive 300 onto the cutting edge 2044 of the tool 200, the air blowing member 80 blows air onto the cutting edge 2044 of the tool 200 at a preset blowing pressure provided by the air pump 70 to blow off the abrasive 300 on the cutting edge 2044. In this embodiment, the preset blowing pressure is the pressure of the gas blown out from the air blowing member 80 and is provided by the air pump 70.

[0087] In step S14, based on the stop of blunting, the turntable 90 drives the blunted cutting tool 200 on one of the multiple clamping parts 10 to rotate around the rotation axis 92 of the turntable 90 at a preset angle, so that the cutting tool 200 on the other adjacent clamping part 10 with the blunted cutting edge 2044 faces the first gun 50 and the second gun 60.

[0088] In this embodiment, after the clamping member 10 of the passivation mechanism 100 stops rotating, and the first gun 50 and the second gun 60 stop sputtering abrasive 300 onto the cutting edge 2044 of the tool 200, the turntable 90 drives the passivated tool 200 with its cutting edge 2044 on one of the multiple clamping members 10 to rotate around the rotation axis 92 of the turntable 90 at a predetermined angle, so that the tool 200 with its cutting edge 2044 to be passivated on another adjacent clamping member 10 faces the first gun 50 and the second gun 60, and steps S9-S14 are repeated until all the tools 200 on the turntable 90 have completed the passivation process.

[0089] It is understood that in other embodiments, the order of steps S13 and S14 can be interchanged, that is, after all the tools 200 on the turntable 90 have been passivated, the air blowing component 80 blows air onto the cutting edges 2044 of all the tools 200.

[0090] Step S15: Remove the blunted cutting tool 200 from the clamping device 10.

[0091] It is understood that in other embodiments, after performing step S12 (stopping passivation), steps S14-S15 can be performed directly. That is, after the passivation of the cutting edges 2044 of all tools 200 is completed, the passivated tools 200 are removed from the clamping member 10, and the operators clean the tools 200 using brushes or other tools. Thus, step S13 can also be omitted.

[0092] When the cutting edge 2044 is passivated using the above-described tool edge passivation method, the elastic abrasive 300, under the preset sputtering high pressure provided by the air pump 70, is sputtered from the corresponding sputtering ports of the first sputtering gun 50 and the second sputtering gun 60 to the cutting edge 2044 of the rotating tool 200, causing elastic deformation. During the elastic deformation of the abrasive 300, the abrasive 300 slides and rubs on the surface of the cutting edge 2044, grinding the cutting edge 2044 and achieving passivation treatment of the cutting edge 2044. Since the preset sputtering angle and preset sputtering distance between the first sputtering gun 50, the second sputtering gun 60 and the tool 200 remain unchanged when the adjusting member 40, the first sputtering gun 50 and the second sputtering gun 60 reciprocate in a direction parallel to the tool axis 201, the corresponding sputtering ports of the first sputtering gun 50 and the second sputtering gun 60... The abrasive 300 sputtered by the sputtering nozzle exerts a uniform force on the cutting edge 2044. As the moving part 30 drives the adjusting part 40, the first sputtering gun 50, and the second sputtering gun 60 to reciprocate in a direction parallel to the tool axis 201, the first sputtering gun 50 and the second sputtering gun 60 reciprocate along the axial direction of the cutting edge 2044, performing a comprehensive scanning sputtering on the entire cutting edge 2044 of the tool 200. The pressure generated by the collision of the abrasive 300 at any position along the axial direction of the cutting edge 2044 is uniform, thereby achieving the effect of uniform axial passivation of the cutting edge 2044. Since the passivation of the cutting edge 2044 is uniform, the tool 200 remains uniform after coating, eliminating the influence of uneven passivation of the cutting edge 2044 on coating adhesion and the performance of the coated tool, thereby improving the performance and life of the tool 200.

[0093] Example 1

[0094] The steps for passivating the cutting edge 2044 of tool 200 using the tool edge passivation method are as follows:

[0095] Step S1: Take three cutting tools 200 and number them K1-1, K1-2, and K1-3 respectively.

[0096] Step S2, provide the aforementioned passivation mechanism 100.

[0097] Step S3: Confirm that the preset pressure range of the compressed gas in the air pump 70 is within 1 bar to 4 bar.

[0098] Step S4: Fill the hopper 20 with 2kg of elastic abrasive 300. The diameter of abrasive 300 is 0.2mm, and the micro powder 304 is diamond with a diameter of 0.5μm.

[0099] Step S5: After confirming that the tool 200 has no defects such as adhesion or chipping of the cutting edge, the tool specifications are obtained by the machining purpose of the tool 200 with the cutting edge 2044 to be blunted. The tool specifications include a total tool length of 75mm, a cutting edge length of 10mm, a cutting edge type of end mill, and a radius of 3μm for the cutting edge 2044.

[0100] Step S6: Clamp the tool 200 in the clamping part 10.

[0101] Step S7: Input the specification parameters via the keyboard and obtain the input specification parameters via the controller 110. The controller 110 generates parameters for blunting the R-angle of the cutting edge 2044 of the tool 200 to 3μm based on the acquired specification parameters. These parameters include: a preset sputtering angle of 10° between the first sputtering gun 50 and the second sputtering gun 60 and the tool axis 201 of the tool 200; a preset sputtering distance of 30mm between the sputtering nozzle of the first sputtering gun 50 and the sputtering nozzle of the second sputtering gun 60 and the tool 200; a preset rotational speed of 3.6r / s for the clamping member 10 to drive the tool 200 to rotate; a preset speed of 30mm / s for the moving member 30 to drive the adjusting member 40, the first sputtering gun 50, and the second sputtering gun 60 to move in a direction parallel to the tool axis 201 of the tool 200; a preset sputtering high pressure of 2.0bar for the first sputtering gun 50 and the second sputtering gun 60; and a preset sputtering time of 20s.

[0102] In step S8, based on the parameters for passivation generated from the specification parameters, the adjusting member 40 adjusts the preset sputtering angle between the first and second sputtering guns 50 and the tool axis 201 of the tool 200 to 10°.

[0103] In step S9, based on the parameters generated for passivation according to the specifications, the moving part 30 adjusts the preset sputtering distance between the sputtering nozzle of the first gun 50 and the sputtering nozzle of the second gun 60 and the cutter 200 to 30mm.

[0104] In step S10, based on the parameters for passivation generated according to the specifications, the clamping part 10 drives the tool 200 to rotate at a preset rotation speed of 3.6 r / s.

[0105] In step S11, according to the parameters for passivation generated by the specification parameters, the first gun 50 and the second gun 60 sputter the abrasive 300 from their respective sputtering ports onto the cutting edge 2044 of the rotating tool 200 with a preset sputtering high pressure of 2.0 bar provided by the air pump 70.

[0106] In step S12, according to the parameters generated for passivation based on the specification parameters, the moving part 30 drives the adjusting part 40, the first spray gun 50 and the second spray gun 60 to reciprocate in a direction parallel to the tool axis 201 of the tool 200 at a preset speed of 30 mm / s until the preset sputtering time of 20 s is reached, thus completing the air jet passivation of the tool 200.

[0107] In step S13, based on the preset sputtering time being reached, the clamping part 10 stops rotating, and the first sputtering gun 50 and the second sputtering gun 60 stop sputtering abrasive to the tool 200.

[0108] In step S14, the air blowing component 80 blows air onto the cutting edge 2044 of the tool 200 at a preset air blowing pressure provided by the air blowing pump 70, so as to blow off the abrasive 300 on the tool 200.

[0109] In step S15, the turntable 90 drives the tool with the blunted cutting edge 2044 on the clamping part 10 to rotate around the rotation axis 92 of the turntable 90, so that the tool 200 with the blunted cutting edge 2044 on another adjacent clamping part 10 is blunted.

[0110] Step S16: After all the cutting tools 200 have been passivated, the turntable 90 returns to its origin and the processed cutting tools 200 are taken out.

[0111] After passivating the cutting tools 200, the radius (R) angle of the three cutting tools 200 and three samples (C1-1, C1-2, and C1-3) that underwent passivation with stirred walnut shells for 40 minutes was measured. The specific testing steps were as follows: each of the six cutting tools 200 was ultrasonically cleaned in alcohol for 2 minutes, then magnified 4000 times using a scanning electron microscope. Figure 2 The size of the corresponding radius (R) is measured at 5 locations as shown. For specific comparison data, please refer to Table 1 below.

[0112] Table 1

[0113]

[0114]

[0115] From Table 1 and Figure 6 Data comparison, and Figure 7 The electron microscope magnified schematic diagrams of the tool 200 with the number K1-1 and the sample with the number C1-1 shown clearly show that the R angle of the cutting edge 2044 after the passivation treatment in this embodiment is significantly more uniform than that of the cutting edge 2044 after the passivation treatment with stirred walnut shells. At the same time, the time for the R angle to be passivated to 3μm is reduced from 40min (2400s) for stirred walnut shells to 25s, and the passivation efficiency is greatly improved.

[0116] Example 2

[0117] In Example 2, the three cutting tools 200 are numbered K2-1, K2-2, and K2-3, respectively. The radius (R) angle of the cutting edge 2044 of each cutting tool 200 needs to be blunted to 4.5 μm. The difference between the parameters used in Example 1 to blunt the R angle of the cutting edge 2044 of the cutting tool 200 to 3 μm and the parameters used in Example 2 to blunt the R angle of the cutting edge 2044 of the cutting tool 200 to 4.5 μm is that: the hopper 20 is filled with 2.5 kg of elastic abrasive 300 with a diameter of 2 mm, the micro powder 304 has a diameter of 5 μm, and the first firing gun 5... The preset sputtering angles between the first and second sputtering guns 50 and the tool axis 201 of the tool 200 are both 30°. The preset sputtering distances between the sputtering nozzles of the first and second sputtering guns 50 and the tool 200 are both 60 mm. The preset speed at which the moving component 30 drives the adjusting component 40, the first sputtering gun 50, and the second sputtering gun 60 to move in a direction parallel to the tool axis 201 of the tool 200 is 20 mm / s. The preset sputtering high pressure provided by the air pump 70 to the first and second sputtering guns 50 is 2.5 bar, and the preset sputtering time is 80 s. It can be understood that the tool edge dulling method of Embodiment 2 is roughly similar to the tool edge dulling method of Embodiment 1, and Embodiment 2 will not be described again here.

[0118] After passivating the cutting tools 200, the radius (R) angle of the three cutting tools 200 and three samples (C2-1, C2-2, and C2-3) that underwent passivation with stirred walnut shell powder for 120 minutes was measured. The specific testing steps were as follows: Each of the six cutting tools 200 was ultrasonically cleaned in alcohol for 2 minutes, then magnified 4000 times using a scanning electron microscope. Figure 2 The size of the corresponding radius (R) is measured at 5 locations as shown. For specific comparison data, please refer to Table 2 below.

[0119] Table 2

[0120]

[0121]

[0122] From Table 2 and Figure 8 Data comparison, and Figure 9 The electron microscope magnified schematic diagrams of the tool 200 with the number K2-1 and the sample with the number C2-1 shown clearly show that the R-angle of the cutting edge 2044 after the passivation treatment in this embodiment is significantly more uniform than that of the cutting edge 2044 after the passivation treatment with stirred walnut shells. At the same time, the time for the R-angle to be passivated to 4.5μm is reduced from 120min (7200s) for stirred walnut shells to 80s, and the passivation efficiency is greatly improved.

[0123] Example 3

[0124] The three cutting tools 200 in Example 3 are numbered K3-1, K3-2, and K3-3, respectively. The radius (R) angle of the cutting edge 2044 of each cutting tool 200 needs to be blunted to 6 μm. The difference between the parameters used in Example 1 to blunt the R angle of the cutting edge 2044 of the cutting tool 200 to 6 μm and the parameters used in Example 3 are: the hopper 20 is filled with 3.0 kg of elastic abrasive 300 with a diameter of 4 mm, the micro powder 304 has a diameter of 10 μm, and the first firing gun 50 and... The preset sputtering angle between the second sputtering gun 60 and the tool axis 201 of the tool 200 is 60°. The preset sputtering distance between the sputtering nozzles of the first sputtering gun 50 and the second sputtering gun 60 and the tool 200 is 80mm. The preset speed at which the moving member 30 drives the adjusting member 40, the first sputtering gun 50, and the second sputtering gun 60 to move in a direction parallel to the tool axis 201 of the tool 200 is 10mm / s. The preset sputtering high pressure provided by the air pump 70 to the first sputtering gun 50 and the second sputtering gun 60 is 3.0 bar, and the preset sputtering time is 180s. It can be understood that the tool edge dulling method of Embodiment 3 is roughly similar to the tool edge dulling method of Embodiment 1, and Embodiment 3 will not be described again here.

[0125] After passivating the cutting tools 200, the radius (R-angle) of the three cutting tools 200 and three samples (C3-1, C3-2, and C3-3) passivated with stirred walnut shell powder for 180 minutes were tested. The specific testing steps were as follows: Each of the six cutting tools 200 was ultrasonically cleaned in alcohol for 2 minutes, then magnified 4000 times using a scanning electron microscope. Figure 2 The size of the corresponding radius (R) is measured at 5 locations as shown. For specific comparison data, please refer to Table 3 below.

[0126] Table 3

[0127]

[0128]

[0129] From Table 3 and Figure 10 Data comparison, and Figure 11 The electron microscope magnified schematic diagrams of the tool 200 with the number K3-1 and the sample with the number C3-1 shown clearly show that the R-angle of the cutting edge 2044 after the passivation treatment in this embodiment is significantly more uniform than that of the cutting edge 2044 after the passivation treatment with stirred walnut shells. At the same time, the time for the R-angle to be passivated to 6μm is reduced from 180min (10800s) for stirred walnut shells to 180s, and the passivation efficiency is greatly improved.

[0130] Example 4

[0131] In Example 4, a cutting tool 200 numbered K4-P1 was passivated 9 times. After each passivation, the radius (R) of the cutting edge 2044 of the passivated cutting tool 200 was measured. The difference between the parameters used in Example 1 to passivate the radius (R) of the cutting edge 2044 of the cutting tool 200 to 3 μm is that the preset speed of the moving part 30 driving the adjusting part 40, the first spray gun 50, and the second spray gun 60 to move in a direction parallel to the cutting axis 201 of the cutting tool 200 is 20 mm / s. The preset sputtering high pressure provided by the air pump 70 to the first spray gun 50 and the second spray gun 60 is 3.0 bar, and the preset sputtering time is 120 s.

[0132] After nine passivation treatments on the cutting tool 200, the radius (R-angle) of one cutting tool 200 and another sample (C4-P1, also polished and passivated nine times) after 120 seconds of passivation with stirred walnut shell powder were tested. The specific testing steps were as follows: both cutting tools 200 were ultrasonically cleaned in alcohol for 2 minutes, then magnified 4000 times using a scanning electron microscope. Figure 2 The R angle was measured at position P1. For specific comparison data, please refer to Table 4 below.

[0133] Table 4

[0134]

[0135]

[0136] From Table 4 and Figure 12 The data comparison clearly shows that, for the same polishing and passivation treatment time, the passivation efficiency of the 2044 cutting edge passivation mechanism 100 in this embodiment four is significantly improved compared to the passivation efficiency of the stirred walnut sand.

[0137] Please see Figure 4 This application embodiment also provides a passivation mechanism 100 for axially uniformly passivating the cutting edge 2044 of a cutting tool 200. It includes clamping members 10, a hopper 20 and a moving member 30 arranged at intervals, an adjusting member 40 mounted on the moving member 30, a first gun 50 and a second gun 60 mounted on the adjusting member 40 and respectively facing the clamping member 10, an air pump 70 respectively connected to the first gun 50 and the second gun 60, an air blowing member 80 connected to the air pump 70 and facing the clamping member 10, a turntable 90 on which multiple clamping members 10 are mounted, and a controller 110 respectively coupled to multiple clamping members 10, moving member 30, adjusting member 40, first gun 50, second gun 60, air pump 70, air blowing member 80 and turntable 90.

[0138] The clamping member 10 is used to clamp the shank 208 of the cutting tool 200 to fix the cutting tool 200, and leaves the cutting portion 202 of the cutting tool 200 exposed to facilitate the blunting of the cutting edge 2044. The clamping member 10 is also used to drive the cutting tool 200 to rotate around the cutting tool axis 201. In this embodiment, the clamping member 10 can be composed of a motor, a sleeve, or other mechanisms. By inserting the shank 208 of the cutting tool 200 into the sleeve, the sleeve fixes the shank 208 of the cutting tool 200, and the motor drives the sleeve to rotate, thereby achieving the effect of rotation of the cutting tool 200. It can be understood that in other embodiments, the clamping member 10 can also be other functional mechanisms that can fix the cutting tool 200 and drive the cutting tool 200 to rotate. It should be noted that when the first firing gun 50, the second firing gun 60, and the air blowing component 80 face the clamping member 10, they also face the cutting tool 200 clamped on the clamping member 10.

[0139] The hopper 20 is used to hold the elastic abrasive 300 (see also...). Figure 5 As shown), the hopper 20 is connected to the first gun 50 and the second gun 60 respectively. The first gun 50 and the second gun 60 use the preset sputtering high pressure provided by the air pump 70 to sputter the abrasive 300 in the hopper 20 from their respective sputtering ports onto the cutting edge 2044 of the rotating tool 200.

[0140] In this embodiment, the moving component 30 drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to move synchronously closer to or away from the cutter 200, so as to adjust the distance between the sputtering nozzles of the first spray gun 50 and the second spray gun 60 and the cutter 200, respectively. The moving component 30 can also drive the adjusting component 40, the first spray gun 50, and the second spray gun 60 to reciprocate synchronously in a direction parallel to the cutter axis 201. In this embodiment, the moving component 30 can be a dual-axis linear module. One of the dual-axis linear modules drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to move synchronously closer to or away from the cutter 200, and the other of the dual-axis linear module drives the adjusting component 40, the first spray gun 50, and the second spray gun 60 to reciprocate synchronously in a direction parallel to the cutter axis 201.

[0141] In this embodiment, the adjusting member 40 may be composed of a motor, at least two meshing gears, etc. The first gun 50 and the second gun 60 are respectively connected to the two meshing gears. The motor drives the two gears to rotate, and the two gears drive the first gun 50 and the second gun 60 to rotate to adjust the sputtering angle between the first gun 50 and the second gun 60 and the tool axis 201 of the tool 200.

[0142] In this embodiment, the air blowing component 80 can be an air nozzle and connected to the air pump 70. The air blowing component 80 blows air onto the cutting edge 204 of the tool 200 with a preset blowing pressure provided by the air pump 70 to blow off the abrasive 300 on the cutting edge 204 of the tool 200. At the same time, the air blowing component 80 can also blow away the abrasive 300 on the clamping component 10.

[0143] In this embodiment, multiple clamping members 10 are evenly distributed on the turntable 90 around the rotation axis 92. By arranging a ring of clamping members 10 at intervals on the turntable 90, after the tool 200 on one of the clamping members 10 is passivated, the turntable 90 drives the passivated tool 2044 on one of the clamping members 10 to rotate around the rotation axis 92 of the turntable 90 at a predetermined angle. This causes the tool 200 with the passivated cutting edge 2044 on another adjacent clamping member 10 to face the first gun 50 and the second gun 60 for further passivation treatment. This allows the passivation mechanism 100 to achieve continuous operation and improves the production efficiency of the tool 200. For example, if 18 clamping members 10 are evenly distributed on the turntable 90, the predetermined angle of rotation of the turntable 90 each time is 20°.

[0144] The controller 110 is used to acquire the specifications of the input tool 200. The controller 110 is coupled to multiple clamping components 10, moving components 30, adjusting components 40, a first firing gun 50, a second firing gun 60, an air pump 70, an air blowing component 80, and a turntable 90. The specifications include the total tool length, cutting edge length, tool profile, rake angle, clearance angle, and edge radius (R angle). After receiving the specifications, the controller can also execute the tool edge blunting method as described in the above embodiment. For example, the controller 110 executes steps S6-S14 as described in the above embodiment, or the controller 110 executes steps S9-S14 as described in the above embodiment.

[0145] In this embodiment, please refer to Figure 5 The cross-sectional schematic diagram of the abrasive 300 shown indicates that the abrasive 300 includes a body 302 and micro powder 304 adhered to the outside of the body 302. The body 302 is made of elastic polyurethane material, and the micro powder 304 is made of hard materials such as diamond, alumina, and silicon carbide. Because the body 302 is elastic, the abrasive 300 itself is also elastic, so that the abrasive 300 undergoes elastic deformation when it collides with the cutting edge 2044, thereby causing the abrasive 300 to slide against the surface of the cutting edge 2044 to increase the contact area between the abrasive 300 and the surface of the cutting edge 2044. Since the micro powder 304 on the surface of the abrasive 300 is a hard material, the micro powder 304 grinds the surface of the cutting edge 2044, thereby producing a grinding effect on the surface of the cutting edge 2044 by the abrasive 300, achieving a passivation effect on the surface of the cutting edge 2044.

[0146] In this embodiment, the diameter of the abrasive 300 ranges from 0.2mm to 4mm, for example, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, etc., and the diameter of the micro powder 304 ranges from 0.5μm to 10μm, for example, 0.5μm, 1μm, 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, etc. By limiting the diameter ranges of the abrasive 300 and the micro powder 304, on the one hand, the abrasive 300 effectively impacts the surface of the cutting edge 2044, and on the other hand, the abrasive 300 produces a better grinding effect on the surface of the cutting edge 2044. In this embodiment, the diameter of the abrasive 300 is 1.5mm, and the diameter of the micro powder 304 is 2μm. It is understandable that, in order to achieve the adhesive bonding between the body 302 and the micro powder 304, the outer surface of the body 302 is treated with a coupling agent before being adhered to the micro powder 304. The surface treatment of the outer surface of the body 302 with a coupling agent enhances the adhesion between the body 302 and the micro powder 304. The coupling agent can be a silane coupling agent, titanate coupling agent, aluminate coupling agent, metal composite coupling agent, phosphate coupling agent, borate coupling agent, etc.

[0147] In this embodiment, the sputtering ports of the first gun 50 and the second gun 60 are respectively provided with chamfers. By providing chamfers at each sputtering port, the abrasive 300 is sputtered out from each sputtering port in a divergent manner, so as to sputter more comprehensively and evenly onto the cutting edge 2044 of the tool 200.

[0148] When the aforementioned passivation mechanism 100 is used to passivate the cutting edge 2044, the elastic abrasive 300, under the preset sputtering high pressure provided by the air pump 70, is sputtered from the corresponding sputtering ports of the first sputtering gun 50 and the second sputtering gun 60 to the cutting edge 2044 of the rotating tool 200, causing elastic deformation. During the elastic deformation of the abrasive 300, the abrasive 300 slides and rubs on the surface of the cutting edge 2044, grinding the cutting edge 2044 and achieving passivation treatment of the cutting edge 2044. Since the preset sputtering angle and preset sputtering distance between the first sputtering gun 50, the second sputtering gun 60 and the tool 200 remain unchanged when the adjusting member 40, the first sputtering gun 50 and the second sputtering gun 60 reciprocate in a direction parallel to the tool axis 201, the corresponding sputtering ports of the first sputtering gun 50 and the second sputtering gun 60... The abrasive 300 sputtered by the sputtering nozzle exerts a uniform force on the cutting edge 2044. As the moving part 30 drives the adjusting part 40, the first sputtering gun 50, and the second sputtering gun 60 to reciprocate in a direction parallel to the tool axis 201, the first sputtering gun 50 and the second sputtering gun 60 reciprocate along the axial direction of the cutting edge 2044, performing a comprehensive scanning sputtering on the entire cutting edge 2044 of the tool 200. The pressure generated by the collision of the abrasive 300 at any position along the axial direction of the cutting edge 2044 is uniform, thereby achieving the effect of uniform axial passivation of the cutting edge 2044. Since the passivation of the cutting edge 2044 is uniform, the tool 200 remains uniform after coating, eliminating the influence of uneven passivation of the cutting edge 2044 on coating adhesion and the performance of the coated tool, thereby improving the performance and life of the tool 200.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A method for dulling the cutting edge of a cutting tool, characterized in that, The method includes: A passivation mechanism is provided, comprising a clamping component, a hopper, a moving component, an adjusting component, a first firing gun, a second firing gun, an air pump, and a controller. The clamping component, the hopper, and the moving component are spaced apart from each other. The adjusting component is mounted on the moving component. The first firing gun and the second firing gun are both mounted on the adjusting component and face the clamping component. The first firing gun and the second firing gun are both connected to the hopper and the air pump. The controller is coupled to the clamping component, the moving component, the adjusting component, the first firing gun, the second firing gun, and the air pump. Determine whether the pressure of the compressed gas in the air pump meets the preset pressure. If not, adjust the pressure of the compressed gas in the air pump to the preset pressure. The abrasive is filled into the hopper. The abrasive comprises a body and micro-powder adhering to the outside of the body. The body is made of elastic polyurethane material, and the micro-powder is diamond, alumina, or silicon carbide. When the abrasive collides with the cutting edge, it undergoes elastic deformation, causing the abrasive to slide against the cutting edge surface to increase the contact area between the abrasive and the cutting edge surface. The diameter of the abrasive ranges from 0.2 mm to 4 mm, and the diameter of the micro-powder ranges from 0.5 μm to 10 μm. The specifications of the cutting edge to be blunted are obtained by the machining purpose of the cutting edge to be blunted. The specifications include at least one of the following: total tool length, cutting edge length, cutting edge shape, rake angle, clearance angle and radius of the cutting edge. The tool whose cutting edge needs to be blunted is clamped in the clamping device; Input the specification parameters and obtain the input specification parameters through the controller; According to the specifications, the adjusting member adjusts the angles between the first and second guns and the axis of the cutter to a preset sputtering angle. According to the specifications, the moving part adjusts the distance between the splash nozzle of the first gun and the splash nozzle of the second gun and the cutter to a preset splash distance; According to the specifications, the clamping component drives the cutting tool to rotate at a preset rotation speed; According to the specifications, the first and second guns use a preset high sputtering pressure provided by the air pump to sputter the abrasive from their respective sputtering ports onto the cutting edge of the rotating tool; According to the specifications, the moving component drives the adjusting component, the first gun and the second gun to move synchronously back and forth at a preset speed in a direction parallel to the axis of the tool until the preset sputtering time is reached. Passivation stops once the preset sputtering time is reached. Remove the blunted cutting tool from the clamp.

2. The tool edge dulling method as described in claim 1, characterized in that, The passivation mechanism further includes an air blowing component, which is connected to the air pump and faces the clamping component. The method further includes: Based on the cessation of passivation, the air blowing component blows air onto the cutting edge of the tool at a preset blowing pressure provided by the air pump.

3. The tool edge dulling method as described in claim 1, characterized in that, The passivation mechanism further includes a turntable, and a plurality of the clamping components are evenly distributed on the turntable around the rotation axis of the turntable; The method further includes: Based on the stop blunting, the turntable drives the blunted cutting tool on one of the multiple clamping parts to rotate around the rotation axis of the turntable at a preset angle, so that the cutting tool with the blunted cutting edge on another adjacent clamping part faces the first gun and the second gun.

4. The tool edge dulling method as described in claim 1, characterized in that, The method further includes: The adjusting component adjusts the angles between the first and second guns and the axis of the tool to a preset splashing angle according to the specified parameters, with the first gun aligned with the front face of the tool and the second gun aligned with the rear face of the tool.

5. The tool edge dulling method as described in claim 4, characterized in that, The preset splashing angle between the first and second guns and the axis of the cutter is 45°.

6. The tool edge dulling method as described in claim 1, characterized in that, The preset splashing distance between the splashing nozzle of the first gun and the splashing nozzle of the second gun and the cutting tool is 50mm.

7. The tool edge dulling method as described in claim 1, characterized in that, The preset speed at which the moving component drives the adjusting component, the first gun, and the second gun to reciprocate is 20 mm / s.

8. The tool edge dulling method as described in claim 1, characterized in that, The weight range of the abrasive material filled in the hopper is 2kg-3kg.

9. The tool edge dulling method as described in claim 1, characterized in that, The preset pressure range of the compressed gas in the air pump is 1 bar to 4 bar.

10. The tool edge dulling method as described in claim 1, characterized in that, The air pump provides a preset sputtering high pressure of 2 bar.

11. The tool edge dulling method as described in claim 1, characterized in that, The preset sputtering time is 20 seconds.

12. The tool edge dulling method as described in claim 1, characterized in that, The splash ports of the first gun and the second gun are respectively provided with chamfers.

13. A cutting edge blunting mechanism for a cutting tool, characterized in that, The passivation mechanism includes: A clamping component for clamping a cutting tool and driving the cutting tool to rotate; A hopper, spaced apart from the clamping component, is used to hold elastic abrasive. The abrasive comprises a body and micro-powder adhering to the outside of the body. The body is made of elastic polyurethane material, and the micro-powder is diamond, alumina, or silicon carbide. When the abrasive collides with the cutting edge, it undergoes elastic deformation, causing the abrasive to slide against the cutting edge surface to increase the contact area between the abrasive and the cutting edge surface. The diameter of the abrasive ranges from 0.2 mm to 4 mm, and the diameter of the micro-powder ranges from 0.5 μm to 10 μm. The first and second guns are both mounted on an adjusting member and face the clamping member. The adjusting member is mounted on a moving member. The first and second guns are both connected to the hopper and an air pump. The adjusting member adjusts the angle between the first and second guns and the axis of the tool to a preset sputtering angle. The moving member adjusts the distance between the sputtering port of the first gun and the sputtering port of the second gun and the tool to a preset sputtering distance. The moving member also drives the adjusting member, the first gun, and the second gun to reciprocate synchronously at a preset speed in a direction parallel to the axis of the tool. The first and second guns, under a preset sputtering high pressure provided by the air pump, sputter the abrasive from the sputtering port of the first gun and the sputtering port of the second gun to the cutting edge of the tool. A controller is used to acquire the input specifications of the cutting tool. The controller is coupled to the clamping component, the moving component, the adjusting component, the first firing gun, the second firing gun, and the air pump. The specifications include at least one of the following: total tool length, cutting edge length, cutting edge shape, rake angle, clearance angle, and edge radius.

14. The cutting edge blunting mechanism as described in claim 13, characterized in that, The passivation mechanism further includes an air blowing component, which is connected to the air pump and faces the clamping component. The air blowing component is coupled to the controller and blows air onto the cutting edge of the tool at a preset blowing pressure provided by the air pump.

15. The cutting edge blunting mechanism as described in claim 13, characterized in that, The passivation mechanism further includes a turntable, on which a plurality of clamping components are evenly distributed around the rotation axis of the turntable. The turntable is coupled to the controller. The turntable drives the passivated cutting tool on one of the clamping components to rotate around the rotation axis of the turntable at a preset angle, so that the cutting tool with the passivated cutting edge on another adjacent clamping component faces the first gun and the second gun.

16. The cutting edge blunting mechanism as described in claim 13, characterized in that, The splash ports of the first gun and the second gun are respectively provided with chamfers.

Images