Precision sharpening apparatus, method, and system for multi-edge asymmetric edge tool

Abstract

The application discloses a kind of precision sharpening device, method and system for multi-blade asymmetric edge tool, including tool transport and pretreatment module, tool clamp, tool asymmetric edge rough machining module, tool asymmetric edge finishing module, the asymmetric edge that the tool edge part needs to be ground is marked by specific device in the application, and the precision machining of asymmetric edge is realized by identifying mark, rough and fine processing conversion, edge measurement based on sharpening track inversion, improve the sharpening quality and sharpening precision of asymmetric edge.

Description

Technical Field

[0001] This invention relates to a sharpening system, specifically a precision sharpening device, method, and system for multi-bladed asymmetric cutting tools. Background Technology

[0002] Tools with asymmetrical cutting edges offer advantages over symmetrical cutting edges, including lower cutting forces, better cutting stability, and longer tool life. They also improve chip removal during machining, exhibiting superior performance. However, conventional grinding devices can only grind symmetrical cutting edges and cannot grind asymmetrical ones. Current multi-edge and asymmetrical cutting edge grinding devices struggle to meet the demands of grinding various asymmetrical cutting edges and the precise adjustment and control required during the grinding process. Therefore, a device is needed to achieve precise grinding of asymmetrical cutting edges on multi-edge tools. Summary of the Invention

[0003] To address the shortcomings of the prior art, this invention provides a precision grinding device, method, and system for multi-bladed asymmetric cutting tools. This invention marks the asymmetric cutting edge that needs to be ground at the cutting edge of the tool using a specific device. It achieves precise machining of the asymmetric cutting edge through identification marking, roughing-finishing conversion, and cutting edge measurement based on the grinding trajectory inversion, thereby improving the grinding quality and precision of the asymmetric cutting edge.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: a precision grinding device for multi-edged asymmetric cutting tools, comprising,

[0005] The tool transport and pre-processing module includes a conveyor belt and a pre-processing device. The conveyor belt is used to transport the tool, and the pre-processing device is used to mark the ideal cutting edge shape of the tool.

[0006] A tool holder is placed in the internal circular hole of the tool asymmetric cutting edge roughing module to fix the tool;

[0007] The asymmetric cutting edge roughing module for cutting tools is located on one side of the conveyor belt and includes a magnetic feeding device for cutting tools, a roughing sharpening device, and a roughing platform pusher device. The magnetic feeding device for cutting tools is used to transfer the cutting tools located on the conveyor belt to the cutting tool holder. The roughing sharpening device is used to perform roughing on the cutting tools located on the cutting tool holder. The roughing platform pusher device is used to raise or lower the roughing table.

[0008] A tool asymmetric cutting edge finishing module, located behind the tool asymmetric cutting edge roughing module, includes a moving device and a finishing device. The finishing device has a notch that can accommodate the tool fixture. The moving device is used to move the finishing device above the roughing device after the roughing device is lowered, so that the notch accommodates the tool fixture, so that the finishing device can perform finishing on the tool located on the tool fixture.

[0009] The tool transport and pretreatment module also includes a tool fixing block, which is fixed to the conveyor belt by energizing an electromagnet and simultaneously fixes the tool by magnetic attraction; the pretreatment device is fixed on the frame, and when the tool fixing block transports the tool to the position of the pretreatment device, the pretreatment device performs a pretreatment operation on the tool.

[0010] The pretreatment device includes a fluorescent agent spraying device, a spraying device guide, and a fluorescent agent storage tank. The fluorescent agent spraying device is connected to the fluorescent agent storage tank through a pipeline. The spraying device guide is used to scan the contour of the cutting tool. The fluorescent agent spraying device is used to mark the parts that need to be removed by grinding with fluorescent agent at the cutting edge of the cutting tool.

[0011] The tool holder includes a ring, a base, three jaws, and a tool clamping device. The surface of the ring has three arc-shaped grooves and three straight grooves. The three arc-shaped grooves and the three straight grooves are evenly distributed around the circumference of the ring. The arc-shaped grooves and the straight grooves intersect. The arc-shaped grooves are concentric with the ring, and the straight grooves slope outwards. The surface of the base has three oblique arc-shaped grooves and three arc-shaped plates. The three arc-shaped grooves and the three arc-shaped plates are evenly distributed around the circumference of the ring. The arc-shaped grooves and the arc-shaped plates intersect. The arc-shaped grooves slope outwards. Three arc-shaped plates are inserted into the three arc-shaped long slots; the three jaws are evenly distributed around the circumference, one side of each jaw is provided with a straight plate, which is inserted into the straight long slot, and the other side of each jaw is provided with a guide rod, which is inserted into the arc-shaped inclined long slot; the blade clamping device is connected to the base, and has a built-in push rod motor, which can push the upper part vertically to be flush with the upper plane of the ring for clamping the blade; the upper part of the blade clamping device has miniature push rod motors built into both sides of the internal groove, which can control the movement of the blade clamping block in the internal groove to achieve clamping of the blade.

[0012] The tool holder also includes a rotary push rod motor assembly, which comprises a rotary push rod motor assembly at the lower end and a stepper motor at the upper end. The rotary push rod motor assembly controls the overall vertical movement and rotation of the tool holder. The upper stepper motor is connected to the top of the push rod of the rotary push rod motor assembly. The upper end of the stepper motor is provided with a protrusion that matches a groove formed on the bottom surface of the base. When the stepper motor rotates, it drives the three jaws to retract towards the center, thereby achieving the clamping of the tool holder.

[0013] The asymmetric cutting edge roughing module also includes a roughing platform and a roughing monitoring device. The roughing sharpening device, the tool magnetic feeding device, and the roughing monitoring device are all mounted on the roughing platform. The roughing sharpening device includes a roughing grinding wheel, a rotation device, a pitch drive device, and a forward / backward movement control device. The rotation device controls the rotation of the roughing grinding wheel to perform roughing and sharpening on the tool. The pitch drive device controls the pitch angle of the roughing grinding wheel, and the forward / backward movement control device controls the forward / backward position of the roughing grinding wheel. The tool magnetic feeding device includes a magnetic block and a feeding robot. The magnetic block holds the tool holder, and the feeding robot transfers the tool to the tool holder. The roughing platform push rod device is connected to the bottom of the roughing platform to raise or lower the platform. The roughing monitoring device controls the rotation, pitch, and forward / backward movement of the roughing grinding wheel based on a fluorescent marker.

[0014] The finishing apparatus includes a finishing platform, a finishing sharpening device, a finishing monitoring and guiding device, and a laser processing device. The finishing sharpening device, the finishing monitoring and guiding device, the optical signal acquisition camera, and the laser processing device are all mounted on the finishing platform, with the laser processing device positioned higher than the cutting tool. The finishing platform has the notch. The finishing sharpening device includes a finishing grinding wheel and a finishing robot arm. The finishing robot arm drives the finishing grinding wheel to finish sharpen the cutting tool, and after the finishing sharpening process, drives the finishing grinding wheel to circle the tool that has been sharpened. The cutting tool has a multi-edged asymmetrical cutting edge around its circumference; the finishing monitoring and guiding device is used to detect the amount of material removed during finishing and to plan the sharpening path for the finishing sharpening device, while simultaneously sending a signal to the laser processing device to guide it to process the cutting edge being sharpened with laser while performing finishing sharpening; the laser processing device is used to perform laser processing on the cutting tool; the moving device includes a rear push rod device and a finishing moving device, the finishing moving device being installed at the bottom of the finishing platform and equipped with pulleys, and the rear push rod device being connected to the finishing moving device for pushing out or pulling back the finishing moving device.

[0015] The asymmetric cutting edge finishing module also includes an optical signal acquisition camera and an optical signal transmitter; the optical signal acquisition camera is mounted on the finishing platform, and the optical signal transmitter is mounted on the finishing grinding wheel; the optical signal transmitter is used to send the motion signal of the finishing grinding wheel around the cutting edge to the optical signal acquisition camera to form the motion trajectory of the finishing grinding wheel.

[0016] A precision grinding method for multi-edged asymmetric cutting edge tools, comprising,

[0017] Control the movement of the conveyor belt, wherein multiple tool fixing blocks are placed on the conveyor belt, and the tool fixing blocks are magnetically fixed to the conveyor belt and are used to fix the tools.

[0018] The control spraying device guide rotates around the z-axis at its shaft end and the scanning lens on its own moving arm rotates around the x-axis to scan the tool profile. After receiving the asymmetrical cutting edge shape that needs to be sharpened, the fluorescent agent spraying device rotates around the z-axis at its shaft end and the fluorescent agent nozzle on its own moving arm rotates around the x-axis to mark the area that needs to be sharpened at the tool cutting edge with fluorescent agent.

[0019] Acquire an initial image of the cutting tool and fluorescent markers, whereby the fluorescent markers are used to indicate the portion of the cutting edge that needs to be removed and to specify the asymmetric cutting edge shape that needs to be formed during sharpening; calculate the volume of the fluorescent marker portion, whereby the volume is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated;

[0020] The magnetic block of the tool magnetic feeding device of the tool asymmetric cutting edge roughing module picks up the tool from the tool fixing block. The feeding robot is controlled to transfer the tool to the middle of the three jaws of the tool holder. The stepper motor is controlled to drive the three jaws to clamp the tool holder. The rotary push rod motor is controlled to push and rotate the tool holder to change the height and angle position of the tool for roughing.

[0021] After roughing and sharpening, the volume of residual fluorescent agent is collected. The residual volume is used to determine the path and sharpening depth of finishing and laser processing.

[0022] The roughing monitoring device of the asymmetric cutting edge roughing module plans the path of rotation, pitch and forward / backward movement, and controls the rotation device, pitch drive device and forward / backward movement control device of the roughing grinding device to drive the roughing grinding wheel to rough the tool according to the path; after the roughing grinding is completed, the device controls the action of the push rod device of the roughing platform to lower the roughing platform.

[0023] The rear push rod device of the control tool asymmetric edge finishing module pushes the finishing moving device forward above the roughing platform, and the notch of the finishing platform can just accommodate the tool fixture. The control finishing monitoring and guiding device detects the amount of material removed during finishing and plans a specific grinding path for the finishing grinding device. The control finishing grinding device performs finishing grinding on the tool edge through the movement of multi-stage kinematic pairs. In particular, the control machining monitoring and guiding device transmits signals to the laser processing device while planning the finishing grinding route, guiding the laser processing device to process the edge being ground with laser while performing finishing grinding. After finishing grinding is completed, the control finishing grinding wheel of the finishing grinding device circles the multi-edge asymmetric edge of the ground tool. At the same time, the optical signal transmitter emits motion signals. The control optical signal acquisition camera collects the motion signals from the optical signal transmitter to form the motion trajectory of the finishing grinding wheel. The motion trajectory is used to obtain the shape and size of the asymmetric edge of the tool after grinding in the control system, and can be compared with the expected shape of the asymmetric edge of the tool to judge the grinding quality of the multi-edge asymmetric edge of the tool.

[0024] A precision sharpening system for multi-edged asymmetric cutting tools, comprising,

[0025] The image acquisition module is used to acquire an initial image of the cutting tool and fluorescent markers. The fluorescent markers are used to indicate the parts of the cutting edge that need to be removed and to indicate the asymmetric cutting edge shape that needs to be formed during sharpening. It is also used to calculate the volume of the fluorescent marker portion, which is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated. After roughing sharpening is completed, it is also used to acquire the volume of the residual fluorescent marker portion, which is used to determine the path and sharpening depth of finishing and laser processing.

[0026] The control module is used to control the operation of the conveyor belt, stepper motor, rotary push rod motor, roughing grinding device, tool magnetic feeding device, roughing platform push rod device, roughing monitoring device, finishing grinding device, finishing monitoring and guiding device, laser processing device, rear push rod device, and finishing moving device.

[0027] In summary, the present invention has achieved the following technical effects:

[0028] This system enables precise grinding of multi-edge asymmetric cutting edges for various cutting tools. The desired asymmetric cutting edge shape is precisely determined by spraying a fluorescent agent onto the tool surface. After clamping and grinding multiple tools, the system monitors the roughing grinding process in real time. Once the desired grinding allowance is reached, it quickly and easily switches to finishing grinding. During finishing grinding, laser treatment of the cutting edge is used to preheat and strengthen the tool surface, reducing thermal stress and improving the grinding quality. After finishing grinding, the image acquisition device uses the grinding trajectory of the finishing device to invert the final asymmetric cutting edge shape and size, comparing it with the originally expected shape and size. This saves time and cost associated with measuring asymmetric cutting edges and makes the grinding results more accurate. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a precision grinding device for multi-bladed asymmetric cutting tools provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the tool transport and pre-processing module;

[0031] Figure 3 This is a schematic diagram of a tool fixture;

[0032] Figure 4 yes Figure 3 A schematic diagram of the decomposition process;

[0033] Figure 5 This is a schematic diagram of a circular ring;

[0034] Figure 6 This is a schematic diagram of the asymmetric cutting edge roughing module for cutting tools;

[0035] Figure 7 This is a side view of the roughing platform being raised for grinding;

[0036] Figure 8 This is a side view of the roughing platform lowered.

[0037] Figure 9 This is a schematic diagram of the asymmetric cutting edge finishing module for cutting tools;

[0038] Figure 10 This is a schematic diagram showing the asymmetric cutting edge finishing module located above the asymmetric cutting edge roughing module. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] Example:

[0046] This invention addresses the problem that multi-bladed cutting tools with asymmetrical cutting edges cannot be precisely ground to produce various geometric shapes and that the grinding quality of the cutting edges is difficult to control precisely. Therefore, it proposes a novel precision grinding system for multi-bladed asymmetrical cutting edge tools.

[0047] like Figure 1 As shown, a precision sharpening device for multi-edged asymmetric cutting tools includes,

[0048] The tool transport and pre-processing module 1 includes a conveyor belt 11 and a pre-processing device. The conveyor belt 11 is used to transport tools, and the pre-processing device is used to mark the ideal cutting edge shape of the tools.

[0049] The tool holder 2 is placed in the internal circular hole of the tool asymmetric cutting edge roughing module 3 to fix the tool;

[0050] The asymmetric cutting edge roughing module 3 is located on one side of the conveyor belt 11 and includes a tool magnetic feeding device 32, a roughing sharpening device 31, and a roughing platform pusher device 34. The tool magnetic feeding device 32 is used to transfer the tool located on the conveyor belt 11 to the tool holder 2. The roughing sharpening device 31 is used to rough-machine the tool located on the tool holder 2. The roughing platform pusher device 34 is used to raise or lower the roughing table.

[0051] The tool asymmetric cutting edge finishing module 4 is located behind the tool asymmetric cutting edge roughing module 3. It includes a moving device and a finishing device. The finishing device has a notch that can accommodate a tool holder. The moving device is used to move the finishing device above the roughing device after the roughing device is lowered, so that the notch can accommodate the tool holder, so that the finishing device can perform finishing on the tool located on the tool holder 2.

[0052] This invention's tool transport and pre-processing module transports the tool to the vicinity of the edge-grinding device and scans and identifies the tool profile. The pre-processing device marks the ideal edge shape required for grinding. The tool fixture is placed in the internal circular hole of the asymmetric edge roughing module; the asymmetric edge finishing module is located behind the roughing module and connected to the push rod motor via screws. The tool transport and pre-processing module 1, tool fixture 2, asymmetric edge roughing module 3, and asymmetric edge finishing module 4 are used to perform rough and finish grinding on the tool. This invention marks the asymmetric edge to be ground using a specific device. Through identification marking, roughing / finishing conversion, and edge measurement based on grinding trajectory inversion, it achieves precise machining of the asymmetric edge, improving the grinding quality and accuracy of the asymmetric edge.

[0053] Figure 2This is a schematic diagram of the tool transport and pretreatment module. The tool transport and pretreatment module 1 also includes a tool fixing block 12. The tool fixing block 12 is energized by an electromagnet to fix itself on the conveyor belt 11, and at the same time fixes the tool by magnetic attraction. The pretreatment device is fixed on the frame. When the tool fixing block 12 transports the tool to the position of the pretreatment device, the pretreatment device performs pretreatment operation on the tool.

[0054] The pretreatment device includes a fluorescent agent spraying device 13, a spraying device guide 14, and a fluorescent agent storage tank 16. The fluorescent agent spraying device 13 is connected to the fluorescent agent storage tank 16 through a pipeline. The spraying device guide 14 is used to scan the contour of the tool. The fluorescent agent spraying device 13 is used to mark the parts that need to be removed by grinding with fluorescent agent at the cutting edge of the tool.

[0055] The fluorescent agent spraying device 13 includes a spraying moving arm and a fluorescent agent nozzle. The spraying moving arm is rotatable along the Z-axis, and the fluorescent agent nozzle is mounted on the spraying moving arm and is rotatable along the X-axis. The spraying device guide 14 includes a guide moving arm and a scanning lens. The guide moving arm is rotatable along the Z-axis, and the scanning lens is mounted on the spraying moving arm and is rotatable along the X-axis.

[0056] The fluorescent agent spraying device and its guide are fixed to both sides of the conveyor belt by screws via external brackets. The fluorescent agent storage tank is connected to the spraying device via a connecting pipe to achieve the marking of the ideal cutting edge shape of the tool. The conveyor belt 11 is driven to move by the rotation of motors on both sides. The tool fixing block 12 is fixed to the conveyor belt by electromagnet energization. At the same time, the tool is placed on the fixing block and is also placed on the fixing block by magnetic attraction. The movement of the conveyor belt moves the fixing block to the position of the fluorescent agent spraying device 13, the spraying device guide 14, and the fluorescent agent storage tank 16. The spraying device guide 14 rotates around the z-axis by its shaft end and the scanning lens on the moving arm rotates around the x-axis, so that the spraying device guide scans the tool outline. After the asymmetrical cutting edge shape to be formed by grinding is input into the control module, the fluorescent agent spraying device 13 rotates around the z-axis by its shaft end and the fluorescent agent nozzle on the moving arm rotates around the x-axis to mark the parts of the tool edge that need to be ground off with fluorescent agent. The fluorescent agent storage tank 16 is connected to the fluorescent agent nozzle via a connecting pipe to provide raw materials for fluorescent agent spraying.

[0057] Figure 3 This is a schematic diagram of a tool fixture. Figure 4 yes Figure 3 A diagram showing the breakdown of the diagram. Figure 5This is a schematic diagram of a circular ring. The tool holder 2 includes a circular ring 21, a base 22, three jaws 23, and a tool clamping device 24. The surface of the circular ring 21 has three arc-shaped long grooves 211 and three straight long grooves 212. The three arc-shaped long grooves 211 and the three straight long grooves 212 are evenly distributed around the circumference of the ring. The arc-shaped long grooves 211 and the straight long grooves 212 are staggered. The arc-shaped long grooves 211 are concentric with the circular ring 21, and the straight long grooves 212 are inclined from the inside out. The surface of the base 22 has three arc-shaped inclined long grooves 222 and three arc-shaped plates 221. The three arc-shaped inclined long grooves 222 and the three arc-shaped plates 221 are evenly distributed around the circumference of the ring. The arc-shaped inclined long grooves 222 and the arc-shaped plates 221 are staggered. The arc-shaped inclined long grooves 222 are inclined from the inside out. Inclined outwards, three arc-shaped plates 221 are inserted into three arc-shaped long slots 211; three claws 23 are evenly distributed around the circumference, one side of each claw 23 has a straight plate 231 inserted into a straight long slot 212, and the other side of each claw 23 has a guide rod 232 inserted into an arc-shaped inclined long slot 222; the blade clamping device 24 is connected to the base 22, and has a built-in push rod motor that can push the upper part vertically to be flush with the upper plane of the ring 21 for clamping the blade; the upper part of the blade clamping device 24 has built-in miniature push rod motors on both sides of the internal groove, which can control the movement of the blade clamping block 241 within the internal groove to clamp the blade. Specifically, the blade clamping device 24 is pushed up to be flush with the upper ring 21 by the internal push rod motor, and the blade plane is clamped by the movement of two protruding blocks within the groove.

[0058] The tool holder 2 also includes a rotary push rod motor assembly 25, which comprises a rotary push rod motor 253 at the lower end and a stepper motor 252 at the upper end. The rotary push rod motor 253 controls the vertical movement and rotation of the tool holder 2 as a whole. The upper stepper motor 252 is connected to the top of the push rod of the rotary push rod motor assembly 25. The upper end of the stepper motor 252 is provided with a protrusion 251, which matches a groove formed on the bottom surface of the base 22. When the stepper motor 252 rotates, it drives the three jaws 23 to retract towards the center, thereby achieving the clamping of the tool holder. The tool holder is connected separately to the bottom rotary push rod motor assembly 25 to control the horizontal height of the holder and avoid interference from the lifting and lowering process of the roughing platform.

[0059] Specifically, the ring 21 connects the three jaws 23 to the base 22 through the arc-shaped long groove 211 and the straight long groove 212, while restricting the movement trajectory of the three jaws during the clamping process. The stepper motor 252 drives the base 22 to rotate, which in turn drives the three jaws to move, realizing the circumferential feeding and retraction of the three jaws, and clamping the tool bar.

[0060] The circular ring 21 of this invention is driven by a stepper motor built into its bottom to rotate, which in turn drives the three jaws to move, achieving circumferential feeding and retraction of the three jaws to clamp the tool holder. The blade clamping device 24 is pushed up to be flush with the upper circular ring by an internal push rod motor, and the blade plane is clamped by the movement of two protruding blocks in the groove.

[0061] This invention provides a tool holder clamping structure that works in conjunction with an insert clamping structure to achieve flexible clamping of various cutting tools. The insert clamping structure is internally connected to a push rod motor; when clamping an insert, the dedicated insert clamping mechanism rises to the working position. The overall clamping mechanism is connected to a rotary push rod motor to achieve vertical lifting and lowering.

[0062] Figure 6 This is a schematic diagram of the asymmetric cutting edge roughing module for cutting tools. The asymmetric cutting edge roughing module 3 also includes a roughing platform 33, a roughing monitoring device 35, a roughing sharpening device 31, a tool magnetic feeding device 32, and a roughing monitoring device 35, all of which are mounted on the roughing platform 33. The roughing sharpening device 31 includes a roughing grinding wheel, a rotation device, a pitch drive device, and a forward and backward movement control device. The rotation device controls the rotation of the roughing grinding wheel to perform roughing and sharpening on the cutting tool. The pitch drive device controls the pitch angle of the roughing grinding wheel, and the forward and backward movement control device controls the forward and backward position of the roughing grinding wheel. The tool magnetic feeding device 32 includes a magnetic block and a feeding robot. The magnetic block is used to hold the tool holder, and the feeding robot is used to transfer the tool to the tool holder 2. The roughing platform push rod device 34 is connected to the bottom of the roughing platform 33 to raise or lower the roughing platform 33. The roughing monitoring device 35 controls the rotation, pitch, and forward and backward movement of the roughing grinding wheel based on the markings made with fluorescent agents.

[0063] The rotating device can be a rotary motor, the pitch drive device can be a hydraulic cylinder and a linkage-slider structure or a linkage structure, and the forward and backward movement control device can be a hydraulic cylinder, etc. The push rod device 34 of the roughing platform can be a hydraulic cylinder, etc.

[0064] The tool magnetic feeding device 32 is powered through a top magnetic suction device, attracting the top of the tool holder. The cutting blade is then held in place by a square block pushed outward from the top magnetic suction device, which acts as an armature. Finally, the tool is mounted on the tool holder. After mounting, the roughing monitoring device 35 controls two roughing grinding devices 31 to move simultaneously within the U-shaped groove of the roughing platform 33, based on the fluorescently marked tool edge removal section, thus planning the roughing grinding path for the grinding devices. The roughing grinding device 31 controls the feed motion through pitch angle rotation and internal push rod motor control, achieving multi-edge asymmetric roughing grinding of the tool at different angles and distances. Finally, the monitoring device determines whether the roughing grinding removal amount has been reached. Once the removal amount is reached, the bottom-connected roughing platform push rod device 34 retracts, and the tool asymmetric edge roughing module descends to the bottom, ending the tool roughing grinding.

[0065] After roughing and sharpening, lower the roughing platform 33. Figure 7 This is a side view of the roughing platform 33 with the blade raised for grinding. Figure 8 This is a side view of the roughing platform 33 after roughing and grinding is completed, lowered.

[0066] This invention relates to a magnetic tool feeding device installed on a roughing platform. The device lifts the tool and positions it on a tool holder. Two roughing grinding devices are evenly distributed within a U-shaped groove on the roughing platform. These devices move within the U-shaped groove, enabling asymmetric roughing grinding of multi-edged tools. A monitoring device determines the progress of the roughing grinding. After roughing is completed, a push rod motor connected to the bottom of the roughing platform retracts, facilitating the transition to the finishing module.

[0067] Figure 9This is a schematic diagram of an asymmetric cutting edge finishing module for cutting tools. The finishing device includes a finishing platform, a finishing sharpening device 41, a finishing monitoring and guiding device 42, and a laser processing device 44. The finishing sharpening device 41, the finishing monitoring and guiding device 42, the optical signal acquisition camera 43, and the laser processing device 44 are all mounted on the finishing platform, with the laser processing device 44 positioned higher than the cutting tool. The finishing platform has an opening. The finishing sharpening device 41 includes a finishing grinding wheel and a finishing robot. The finishing robot drives the finishing grinding wheel to perform finishing sharpening of the cutting tool, and after the finishing sharpening process, it drives the finishing grinding wheel to rotate. The multi-edge asymmetrical cutting edge of the sharpened tool is rotated around the perimeter; the finishing monitoring and guiding device 42 is used to detect the amount of material removed during finishing and to plan the sharpening path for the finishing sharpening device 41, while simultaneously sending a signal to the laser processing device 44 to guide the laser processing device 44 to process the sharpening edge with laser while performing finishing sharpening; the laser processing device 44 is used to perform laser processing on the tool; the moving device includes a rear push rod device 45 and a finishing moving device 46, the finishing moving device 46 is installed at the bottom of the finishing platform and is equipped with pulleys, and the rear push rod device 45 is connected to the finishing moving device 46 to push out or pull back the finishing moving device 46.

[0068] The upper part of the finishing monitoring and guiding device 42 is divided into a camera, while the middle and lower sections have the same structure as the finishing robot in the finishing grinding device 41. The rear push rod device 45 can be a hydraulic cylinder, etc., and the finishing moving device 46 uses a column and pulleys.

[0069] Figure 10 This is a schematic diagram showing the asymmetric cutting edge finishing module located above the asymmetric cutting edge roughing module. The rear push rod device 45, connected to the finishing moving device 46, pushes the entire finishing module above the roughing module after the asymmetric cutting edge roughing module descends to the bottom. Simultaneously, the notch in the middle of the finishing module engages with the fixture. The finishing monitoring and guiding device 42 detects the amount of material removed during finishing and plans a specific grinding path for the finishing sharpening device 41. The finishing sharpening device performs finishing sharpening on the cutting edge through the movement of multi-stage kinematic pairs. While planning the finishing sharpening route, the monitoring and guiding device 42 transmits signals to the laser processing device 44, guiding the laser processing device to simultaneously process the sharpening edge using laser light.

[0070] The asymmetric cutting edge finishing module 4 also includes an optical signal acquisition camera 43 and an optical signal transmitter 411. The optical signal acquisition camera 43 is set on the finishing platform, and the optical signal transmitter 411 is set on the finishing grinding wheel. The optical signal transmitter 411 is used to send the motion signal of the finishing grinding wheel around the cutting edge to the optical signal acquisition camera 43 to form the motion trajectory of the finishing grinding wheel.

[0071] Optical signal acquisition cameras are installed on both sides, behind, and on one side of the laser processing device of the tool asymmetric cutting edge finishing platform. After grinding, the grinding wheel of the finishing grinding device 41 surrounds the multi-edge asymmetric cutting edge of the ground tool to improve the surface quality of the cutting edge and remove burrs. The optical signal transmitter 411 on it is powered on and emits light signals, which are captured by the optical signal acquisition cameras in three directions to form the grinding wheel movement trajectory. The shape and size of the asymmetric cutting edge of the tool after grinding can be obtained in the control system through the grinding wheel movement trajectory. By comparing it with the expected shape of the tool asymmetric cutting edge, the grinding quality of the multi-edge asymmetric cutting edge of the tool can be judged.

[0072] In this invention, two finishing grinding devices and a monitoring and guiding device are diagonally mounted on a platform at the top of a moving device. A laser processing device is supported by a pillar and mounted on the top of the finishing platform, achieving mutual coordination between the finishing grinding edge and the laser-processed edge. The optical signal acquisition camera on both the finishing grinding device and the laser processing device enables multi-plane inversion measurement of the final asymmetric cutting edge shape of the tool through the finishing grinding devices.

[0073] Working principle:

[0074] After the control system obtains an image of the cutting tool, it sprays fluorescent agent onto the multi-edge surface of the tool using a multi-degree-of-freedom fluorescent agent spraying device, based on the existing cutting edge design, to indicate the asymmetric cutting edge shape to be formed during grinding. The progress of rough grinding is confirmed by monitoring the volume of fluorescent agent removed during rough grinding using an image acquisition device, and the determination of whether rough grinding needs to be terminated is based on the measured volume of fluorescent agent at the remaining multi-edge cutting edge. After rough grinding is terminated, the path and grinding depth for finishing are determined based on the volume of fluorescent agent remaining at the multi-edge cutting edge obtained from image acquisition. Simultaneously, laser treatment of the cutting edge and finishing grinding are performed. Laser treatment of the cutting edge surface preheats the workpiece, reducing thermal stress generated during grinding and strengthening the cutting edge. After grinding, the finishing system moves the grinding wheel around the asymmetric cutting edge of the tool. An optical signal is emitted from a device near the grinding wheel, and the movement trajectory is captured by the acquisition device, forming an optical profile. This optical profile is calculated by converting the distance between the device near the grinding wheel and the cutting edge, thus obtaining the final shape and size of the tool after grinding.

[0075] A precision grinding method for multi-edged asymmetric cutting edge tools, comprising,

[0076] (1) Control the movement of the conveyor belt 11, wherein multiple tool fixing blocks 12 are placed on the conveyor belt 11, the tool fixing blocks 12 are fixed on the conveyor belt 11 by magnetic attraction, and the tool fixing blocks 12 are used to fix the tool 5.

[0077] (2) The spraying device guide 14 rotates around the z-axis at its shaft end and the scanning lens on its own moving arm rotates around the x-axis to scan the tool outline. After receiving the asymmetrical cutting edge shape that needs to be sharpened, the fluorescent agent spraying device 13 rotates around the z-axis at its shaft end and the fluorescent agent nozzle on its own moving arm rotates around the x-axis to mark the part that needs to be sharpened at the tool cutting edge with fluorescent agent.

[0078] (3) Acquire the initial image of the cutting tool and the fluorescent marker, wherein the fluorescent marker is used to indicate the part that needs to be removed from the cutting edge and to indicate the asymmetric cutting edge shape that needs to be formed during sharpening; calculate the volume of the fluorescent marker part, wherein the volume is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated.

[0079] (4) The magnetic block of the tool magnetic feeding device 32 of the tool asymmetric cutting edge roughing module 3 picks up the tool 5 from the tool fixing block 12, controls the feeding robot to transfer the tool 5 to the middle of the three jaws 23 of the tool holder 2, controls the stepper motor to drive the three jaws 23 to clamp the tool holder of the tool 5, and controls the rotary push rod motor group 25 to push the tool holder 2 to change the height position of the tool 5 for roughing.

[0080] (5) After the roughing and sharpening is completed, the volume of the residual fluorescent agent is collected. The residual volume is used to determine the path and sharpening depth of the finishing and laser treatment.

[0081] (6) The roughing monitoring device 35 of the tool asymmetric cutting edge roughing module 3 plans the path of rotation, pitch and forward and backward movement, and controls the rotation device, pitch drive device and forward and backward movement control device of the roughing grinding device 31 to drive the roughing grinding wheel to rough the tool 5 according to the path; after the roughing grinding is completed, the roughing platform push rod device 34 is controlled to lower the roughing platform 33.

[0082] (7) The rear push rod device 45 of the tool asymmetric edge finishing module 4 is controlled to push the finishing moving device 46 forward to above the roughing platform 33, and the notch of the finishing platform can just accommodate the tool fixture 2; the finishing monitoring and guiding device 42 is controlled to detect the amount of edge finishing removal, plan a specific grinding path for the finishing grinding device 41, and control the finishing grinding device to perform finishing grinding on the tool edge through the movement of multi-stage kinematic pairs. Among them, the machining monitoring and guiding device 42 transmits signals to the laser processing device 44 while planning the finishing grinding route, guiding the laser processing device 44 in the finishing process. While the tool is being sharpened, the cutting edge is processed by laser. After the finishing sharpening is completed, the finishing grinding wheel of the finishing grinding device 41 is controlled to circle the multi-edge asymmetric cutting edge of the tool being sharpened. At the same time, the optical signal transmitter 411 emits motion signals. The optical signal acquisition camera 43 is controlled to acquire the motion signals of the optical signal transmitter 411 to form the motion trajectory of the finishing grinding wheel. The motion trajectory is used to obtain the shape and size of the asymmetric cutting edge of the tool after sharpening in the control system, and can be compared with the expected shape of the asymmetric cutting edge of the tool to judge the sharpening quality of the multi-edge asymmetric cutting edge of the tool.

[0083] A precision sharpening system for multi-edged asymmetric cutting tools includes:

[0084] The image acquisition module is used to acquire an initial image of the cutting tool and fluorescent markers. The fluorescent markers are used to indicate the parts of the cutting edge that need to be removed and to indicate the asymmetric cutting edge shape that needs to be formed during sharpening. It is also used to calculate the volume of the fluorescent marker portion, which is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated. After roughing sharpening is completed, it is also used to acquire the volume of the residual fluorescent marker portion, which is used to determine the path and sharpening depth of finishing and laser processing.

[0085] The control module is used to control the operation of the conveyor belt 11, stepper motor, rotary push rod motor group 25, roughing grinding device 31, tool magnetic feeding device 32, roughing platform push rod device 34, roughing monitoring device 35, finishing grinding device 41, finishing monitoring and guiding device 42, laser processing device 44, rear push rod device 45, and finishing moving device 46.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A precision sharpening device for multi-edged asymmetric cutting tools, characterized in that: include, The tool transport and pre-processing module (1) includes a conveyor belt (11) and a pre-processing device, wherein the conveyor belt (11) is used to transport tools and the pre-processing device is used to mark the ideal cutting edge shape of the tools; The tool holder (2) is placed in the internal circular hole of the tool asymmetric cutting edge roughing module (3) to fix the tool; The asymmetric cutting edge roughing module (3) is located on one side of the conveyor belt (11) and includes a tool magnetic feeding device (32), a roughing sharpening device (31), and a roughing platform pusher device (34). The tool magnetic feeding device (32) is used to transfer the tool located on the conveyor belt (11) to the tool holder (2). The roughing sharpening device (31) is used to rough the tool located on the tool holder (2). The roughing platform pusher device (34) is used to raise or lower the roughing table. The asymmetric cutting edge finishing module (4) is located behind the asymmetric cutting edge roughing module (3) and includes a moving device and a finishing device. The finishing device has a notch that can accommodate the tool fixture. The moving device is used to move the finishing device above the roughing grinding device after the roughing grinding device is lowered, and to make the notch accommodate the tool fixture so that the finishing device can finish the tool located on the tool fixture (2). The pretreatment device includes a fluorescent agent spraying device (13), a spraying device guide (14), and a fluorescent agent storage tank (16). The fluorescent agent spraying device (13) is connected to the fluorescent agent storage tank (16) through a pipeline. The spraying device guide (14) is used to scan the outline of the tool. The fluorescent agent spraying device (13) is used to mark the parts that need to be removed by grinding at the cutting edge of the tool with fluorescent agent. The asymmetric cutting edge roughing module (3) further includes a roughing platform (33) and a roughing monitoring device (35). The roughing sharpening device (31), the tool magnetic feeding device (32), and the roughing monitoring device (35) are all installed on the roughing platform (33). The roughing sharpening device (31) includes a roughing grinding wheel, a rotating device, a pitch driving device, and a forward and backward movement control device. The rotating device is used to control the rotation of the roughing grinding wheel to perform roughing and sharpening on the tool. The pitch driving device is used to control the pitch angle of the roughing grinding wheel. The forward and backward movement control device is used to control the forward and backward position of the roughing grinding wheel; the tool magnetic feeding device (32) includes a magnetic block and a feeding robot, the magnetic block is used to hold the tool holder, and the feeding robot is used to transfer the tool to the tool holder (2); the roughing platform push rod device (34) is connected to the bottom end of the roughing platform (33) to raise or lower the roughing platform (33); the roughing monitoring device (35) is used to control the rotation, pitch and forward and backward movement of the roughing grinding wheel according to the fluorescent agent markings; The finishing device includes a finishing platform, a finishing sharpening device (41), a finishing monitoring and guiding device (42), and a laser processing device (44); the finishing sharpening device (41), the finishing monitoring and guiding device (42), and the laser processing device (44) are all located on the finishing platform, and the laser processing device (44) is positioned higher than the tool; the finishing platform has the notch; the finishing sharpening device (41) includes a finishing grinding wheel and a finishing robot, the finishing robot being used to drive the finishing grinding wheel to finish sharpen the tool, and, after the finishing sharpening process, to drive the finishing grinding wheel to circle the multi-edge asymmetric cutting edge of the sharpened tool. The finishing monitoring and guiding device (42) is used to detect the amount of material removed during finishing and to plan the grinding path for the finishing grinding device (41). At the same time, it sends a signal to the laser processing device (44) to guide the laser processing device (44) to process the edge being ground by laser while performing finishing grinding. The laser processing device (44) is used to perform laser processing on the tool. The moving device includes a rear push rod device (45) and a finishing moving device (46). The finishing moving device (46) is installed at the bottom of the finishing platform and is equipped with pulleys. The rear push rod device (45) is connected to the finishing moving device (46) and is used to push out or pull back the finishing moving device (46).

2. The precision grinding device for multi-edged asymmetric cutting tools according to claim 1, characterized in that: The tool transport and pretreatment module (1) also includes a tool fixing block (12). The tool fixing block (12) is energized by an electromagnet to fix itself on the conveyor belt (11) and fixes the tool by magnetic attraction. The pretreatment device is fixed on the frame. When the tool fixing block (12) transports the tool to the position of the pretreatment device, the pretreatment device performs pretreatment operation on the tool.

3. The precision grinding device for multi-edged asymmetric cutting tools according to claim 2, characterized in that: The tool holder (2) includes a ring (21), a base (22), three jaws (23), and a blade clamping device (24). The surface of the ring (21) has three arc-shaped grooves (211) and three straight grooves (212). The three arc-shaped grooves (211) are evenly distributed around the circumference, and the three straight grooves (212) are also evenly distributed around the circumference. The arc-shaped grooves (211) and the straight grooves (212) intersect. The arc-shaped long groove (211) is concentric with the circular ring (21), and the straight long groove (212) is inclined from the inside out; the surface of the base (22) is provided with three arc-shaped oblique long grooves (222) and three arc-shaped plates (221), the three arc-shaped oblique long grooves (222) are evenly distributed around the circumference, the three arc-shaped plates (221) are evenly distributed around the circumference, the arc-shaped oblique long grooves (222) and the arc-shaped plates (221) are staggered, and the arc-shaped long grooves (222) are evenly distributed around the circumference. The inclined groove (222) is inclined from the inside to the outside, and the three arc plates (221) are inserted into the three arc-shaped grooves (211); the three claws (23) are evenly distributed around the circumference, and one side of the claw (23) is provided with a straight plate (231), which is inserted into the straight groove (212). The other side of the claw (23) is provided with a guide rod (232), which is inserted into the arc inclined groove (222); the blade clamping device (24) is connected to the base (22), and has a built-in push rod motor, which can push the upper part vertically to be flush with the upper plane of the ring (21) for clamping the blade; the upper part of the blade clamping device (24) has built-in miniature push rod motors on both sides of the internal groove, which can control the blade clamping block (241) to move in the internal groove to achieve clamping of the blade.

4. The precision grinding device for multi-edged asymmetric cutting tools according to claim 3, characterized in that: The tool holder (2) also includes a rotary push rod motor assembly (25), which includes a rotary push rod motor (253) at the lower end and a stepper motor (252) at the upper end. The rotary push rod motor (253) controls the overall movement of the tool holder (2) in the vertical direction and the overall rotation of the tool holder (2). The upper stepper motor (252) is connected to the push rod top of the rotary push rod motor assembly (25). The upper end of the stepper motor (252) is provided with a protrusion (251) that matches the groove on the bottom surface of the base (22). When the stepper motor (252) rotates, it drives the three jaws (23) to retract toward the center, thereby realizing the clamping of the tool holder.

5. The precision grinding device for multi-edged asymmetric cutting tools according to claim 4, characterized in that: The asymmetric cutting edge finishing module (4) further includes an optical signal acquisition camera (43) and an optical signal transmitter (411); the optical signal acquisition camera (43) is set on the finishing platform, and the optical signal transmitter (411) is set on the finishing grinding wheel; the optical signal transmitter (411) is used to send the motion signal of the finishing grinding wheel around the cutting edge to the optical signal acquisition camera (43) to form the motion trajectory of the finishing grinding wheel.

6. A precision grinding method for multi-edged asymmetric cutting edge tools, characterized in that: A precision grinding device for multi-edged asymmetric cutting tools as described in claim 5, comprising, Control the movement of the conveyor belt (11), wherein multiple tool fixing blocks (12) are placed on the conveyor belt (11), the tool fixing blocks (12) are fixed on the conveyor belt (11) by magnetic attraction, and the tool fixing blocks (12) are used to fix the tool (5). The control spraying device guide (14) rotates around the z-axis at the shaft end and the scanning lens on its own moving arm rotates around the x-axis to scan the tool outline. After receiving the asymmetrical cutting edge shape that needs to be sharpened, the fluorescent agent spraying device (13) rotates around the z-axis at the shaft end and the fluorescent agent nozzle on its own moving arm rotates around the x-axis to mark the part that needs to be sharpened at the tool cutting edge with fluorescent agent. Acquire an initial image of the cutting tool and fluorescent markers, whereby the fluorescent markers are used to indicate the portion of the cutting edge that needs to be removed and to specify the asymmetric cutting edge shape that needs to be formed during sharpening; calculate the volume of the fluorescent marker portion, whereby the volume is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated; The magnetic block of the tool magnetic feeding device (32) of the tool asymmetric cutting edge roughing module (3) picks up the tool (5) from the tool fixing block (12), controls the feeding robot to transfer the tool (5) to the middle of the three jaws (23) of the tool holder (2), controls the stepper motor (252) to drive the three jaws (23) to clamp the tool holder of the tool (5), controls the rotary push rod motor (253) to push and rotate the tool holder (2) to change the height and angle position of the tool (5) for roughing; After roughing and sharpening, the volume of residual fluorescent agent is collected. The residual volume is used to determine the path and sharpening depth of finishing and laser processing. The roughing monitoring device (35) of the roughing module (3) for controlling the asymmetric cutting edge of the tool plans the path of rotation, pitch and forward and backward movement, and controls the rotation device, pitch drive device and forward and backward movement control device of the roughing grinding device (31) to drive the roughing grinding wheel to rough the tool (5) according to the path; after the roughing grinding is completed, the device (34) of the roughing platform push rod is controlled to lower the roughing platform (33); The rear push rod device (45) of the control tool asymmetric edge finishing module (4) moves to push the finishing moving device (46) forward to the top of the roughing platform (33), and the notch of the finishing platform can just accommodate the tool fixture (2); the control finishing monitoring and guiding device (42) detects the amount of edge finishing removal, plans a specific grinding path for the finishing grinding device (41), and controls the finishing grinding device to perform finishing grinding on the tool edge through the movement of multi-stage kinematic pairs. Among them, the control machining monitoring and guiding device (42) transmits signals to the laser processing device (44) while planning the finishing grinding route, and guides the laser processing device (46) to perform finishing grinding on the tool edge. 4) While the finishing grinding is being performed, the edge being ground is treated with a laser. After the finishing grinding is completed, the finishing grinding wheel of the finishing grinding device (41) is controlled to circle the multi-edge asymmetric edge of the ground tool. At the same time, the optical signal transmitter (411) emits a motion signal. The optical signal acquisition camera (43) is controlled to acquire the motion signal of the optical signal transmitter (411) to form the motion trajectory of the finishing grinding wheel. The motion trajectory is used to obtain the shape and size of the asymmetric edge of the tool after grinding in the control system and can be compared with the expected shape of the asymmetric edge of the tool to judge the grinding quality of the multi-edge asymmetric edge of the tool.

7. A precision sharpening system for multi-edged asymmetric cutting tools, characterized in that: The precision grinding method for multi-edged asymmetric cutting tools as described in claim 6 is applied. include, The image acquisition module is used to acquire an initial image of the cutting tool and fluorescent markers. The fluorescent markers are used to indicate the parts of the cutting edge that need to be removed and to indicate the asymmetric cutting edge shape that needs to be formed during sharpening. It is also used to calculate the volume of the fluorescent marker portion, which is used to confirm the progress of roughing sharpening and to determine whether roughing sharpening needs to be terminated. After roughing sharpening is completed, it is also used to acquire the volume of the residual fluorescent marker portion, which is used to determine the path and sharpening depth of finishing and laser processing. The control module is used to control the operation of the conveyor belt (11), stepper motor (252), rotary push rod motor (253), roughing grinding device (31), tool magnetic feeding device (32), roughing platform push rod device (34), roughing monitoring device (35), finishing grinding device (41), finishing monitoring and guiding device (42), laser processing device (44), rear push rod device (45), and finishing moving device (46).

Images