A high-precision blunting device for cutting edge of a cutting tool

Abstract

This invention relates to the field of tool passivation and discloses a high-precision tool edge passivation device, comprising: a frame, on which a tool passivation mechanism and a tool clamping and dust removal mechanism are mounted; the tool clamping and dust removal mechanism includes a base, a support seat, a tool adapter slot, a side frame, a vertical rod, an active component, and a clamping component; the base is fixedly mounted on the frame, the support seat is fixedly mounted on the base, the tool adapter slot is formed on the top of the support seat, the side frame is fixedly mounted on the support seat, the vertical rod is vertically slidably mounted on the base, the active component is fixedly mounted on the vertical rod, and an L-shaped hole is formed on the side frame, with the active component slidably and sealingly mounted in the L-shaped hole. This invention has the following advantages and effects: stable clamping, high machining accuracy, dust-free operation, simplified structure, high degree of automation, and significantly improved tool passivation quality and batch processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of cutting tool passivation technology, and in particular to a high-precision passivation device for cutting tool edges. Background Technology

[0002] A passivation machine is a commonly used equipment for treating alloy cutting tools. It is used to grind and passivate alloy cutting tools in mechanical manufacturing to prevent the surface of the cutting tool from being activated and susceptible to corrosion. This allows the cutting edges of alloy milling and cutting tools to be rounded, improving the quality of the alloy cutting tools and extending their service life. Among them, the brush-type passivation machine is the most commonly used mechanical passivation equipment. It uses bristles with diamond particles bonded to them to passivate the cutting edge of the drill bit by rotating them. It has a large passivation range and does not damage the cutting edge or cause chipping.

[0003] In the current technology, the mainstream in the industry is to use brush-type passivation equipment to passivate the cutting edge of the tool. By bonding diamond abrasive grains to the surface of the brush filaments, the high-speed rotating brush performs flexible micro-grinding on the cutting edge of the tool. It has the advantages of controllable passivation amount, less prone to chipping, and wide adaptability. Compared with sandblasting passivation, vibration grinding, laser passivation and other methods, it is more suitable for high-precision passivation of precision alloy tools.

[0004] However, traditional equipment mostly uses a mechanical rigid clamping structure, which makes it difficult to accurately control the clamping force. Single-point rigid force can easily cause tool clamping deformation and positioning deviation. Moreover, the poor consistency of clamping force for different tools leads to insufficient uniformity of cutting edge passivation and large differences in the precision of batch processed products. Existing equipment has independent clamping and passivation dust removal without a linkage structure. During the passivation and grinding process, a large amount of metal micro dust and cutting edge chips are generated, which can easily accumulate on the cutting edge, clamping gap and processing table. This not only scratches the cutting edge and causes passivation defects, but also pollutes the workshop environment. Dust accumulation can also easily lead to inaccurate tool positioning, further reducing the passivation accuracy. Therefore, it is necessary to design a high-precision tool cutting edge passivation device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision passivation device for cutting tool edges to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a high-precision passivation device for cutting edge of a tool, comprising: A frame, on which a tool passivation mechanism and a tool clamping and dust removal mechanism are provided; The tool clamping and dust removal mechanism includes a base, a bearing seat, a tool adapter slot, a side frame, a vertical rod, an active component, and a clamping component; The base is fixedly mounted on the frame, the support is fixedly mounted on the base, the tool adapter slot is opened on the top of the support, the side frame is fixedly mounted on the support, the upright is vertically slidably mounted on the base, the driving member is fixedly mounted on the upright, the side frame has an L-shaped hole, the driving member is slidably and sealed in the L-shaped hole, the driven member is slidably and sealed in the L-shaped hole, the driven member is fixedly connected to the clamping member, and the L-shaped hole is filled with hydraulic oil.

[0007] A further configuration of the present invention is as follows: the tool clamping dust removal mechanism further includes a dust suction hole, a cavity, a U-shaped hole, a dust suction pipe, and a coarse hole. The dust suction hole is opened at the top of the base, the cavity is opened on the base, the U-shaped hole is opened on the upright, the coarse hole is opened at the bottom of the frame, and the dust suction pipe is fixedly installed in the coarse hole.

[0008] A further configuration of the present invention is as follows: the tool blunting mechanism includes a connecting frame, a hydraulic cylinder, a pusher, a power motor, a turntable, and a brush. The connecting frame is fixedly installed on the top of the machine frame, the hydraulic cylinder is fixedly installed on the connecting frame, the hydraulic rod of the hydraulic cylinder is fixedly connected to the pusher, the power motor is fixedly installed on the pusher, the output end of the power motor is fixedly connected to the turntable, and the brush is fixedly installed on the turntable.

[0009] By adopting the above technical solution, it is convenient to perform passivation processing on the cutting tools.

[0010] A further feature of the present invention is that a fine hole is provided on the inner wall at the bottom of the cavity, the fine hole is connected to the coarse hole, and the U-shaped hole is in sealing contact with the fine hole.

[0011] A further feature of the present invention is that a square groove is provided on the inner wall of the tool adapter groove, the clamping member is slidably installed in the square groove, and a spring is fixedly connected between the clamping member and the side wall of the square groove.

[0012] By adopting the above technical solution, the clamping component can move within the square groove.

[0013] A further feature of the present invention is that a vertical hole is provided on the inner wall of the top of the cavity, and a vertical rod is slidably installed in the vertical hole.

[0014] By adopting the above technical solution, it is convenient to move the pole vertically.

[0015] A further feature of the present invention is that the top of the connecting frame has a sliding hole, and the pusher is vertically slidably installed in the sliding hole.

[0016] A further provision of the present invention is that the top of the turntable contacts the pusher.

[0017] The beneficial effects of this invention are: This invention utilizes a tool clamping and dust removal mechanism. A negative pressure adsorption drives the vertical rod downwards, and the hydraulic oil inside the L-shaped hole seals and transmits force, automatically centering and clamping the tool. Taking advantage of the uniform force transmission and constant pressure of the liquid, the tool clamping force is even and the positioning is stable, avoiding the problems of excessive force at a single point caused by traditional mechanical clamping, which leads to tool deformation and clamping misalignment. This effectively improves the accuracy of tool passivation processing. After the vertical rod descends and clamps the tool in place, the U-shaped hole automatically connects to the dust extraction path. Metal dust and fine chips generated during passivation can be removed in real time by negative pressure, preventing dust accumulation on the tool edge, clamping gaps, and equipment surface. This ensures a clean and impurity-free passivation and grinding contact surface, further improving passivation quality, and also improving the workshop working environment, achieving dust-free processing. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary. The structures, proportions, sizes, etc., drawn in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size is not permitted.

[0019] Figure 1 This is a schematic diagram of the structure of a high-precision passivation device for cutting tool edges proposed in this invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of a high-precision passivation device for cutting tool edges proposed in this invention. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the structure of a high-precision passivation device for cutting tool edges proposed in this invention. Figure 3 .

[0022] Figure 4 This is a cross-sectional structural schematic diagram of a high-precision passivation device for cutting edges proposed in this invention.

[0023] Figure 5 yes Figure 2 A schematic diagram of part A in the diagram.

[0024] Figure 6 yes Figure 3 A schematic diagram of part B in the diagram.

[0025] Figure 7 yes Figure 4 A schematic diagram of part C in the diagram.

[0026] In the diagram, 1. Frame; 2. Connecting frame; 3. Hydraulic cylinder; 4. Push frame; 5. Power motor; 6. Turntable; 7. Brush; 8. Base; 9. Bearing seat; 10. Tool adapter slot; 11. Side frame; 12. Upright pole; 13. Driving component; 14. Clamping component; 15. Dust suction hole; 16. Cavity; 17. U-shaped hole; 18. Dust suction pipe; 19. Coarse hole; 20. Square groove; 21. L-shaped hole. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] 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," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] 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.

[0030] 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 connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] See Figures 1-7 This invention provides a high-precision passivation device for cutting tool edges, comprising: The frame 1 is equipped with a tool passivation mechanism and a tool clamping and dust removal mechanism. The tool clamping and dust removal mechanism includes a base 8, a bearing seat 9, a tool adapter slot 10, a side frame 11, a vertical rod 12, an active component 13, and a clamping component 14; The base 8 is fixedly installed on the frame 1, the bearing seat 9 is fixedly installed on the base 8, the tool adapter groove 10 is opened on the top of the bearing seat 9, the side frame 11 is fixedly installed on the bearing seat 9, the upright 12 is vertically slidably installed on the base 8, the driving member 13 is fixedly installed on the upright 12, the side frame 11 has an L-shaped hole 21, the driving member 13 is slidably sealed in the L-shaped hole 21, the driven member is slidably sealed in the L-shaped hole 21, the driven member is fixedly connected to the clamping member 14, and the L-shaped hole 21 is filled with hydraulic oil.

[0033] With the above structure, when the driving member 13 moves downward, the hydraulic oil pushes the driven member, causing the driven member to move. The driven member drives the clamping member 14 to move, causing the clamping member 14 to move outward and stretch the spring. The clamping member 14 clamps and limits the tool, ensuring the stability of the tool. Furthermore, it can effectively remove dust during the subsequent passivation process of the tool.

[0034] Specifically, the tool clamping dust removal mechanism also includes a dust suction hole 15, a cavity 16, a U-shaped hole 17, a dust suction pipe 18, and a coarse hole 19. The dust suction hole 15 is opened on the top of the base 8, the cavity 16 is opened on the base 8, the U-shaped hole 17 is opened on the upright 12, the coarse hole 19 is opened on the bottom of the frame 1, and the dust suction pipe 18 is fixedly installed in the coarse hole 19.

[0035] With the above structure, when the suction pipe 18 is working, a negative pressure suction force is generated between the coarse hole 19 and the fine hole, which can drive the upright rod 12 to move downward until the bottom opening of the U-shaped hole 17 is connected to the coarse hole 19. During this process, the upright rod 12 drives the active component 13 to move.

[0036] Specifically, the tool blunting mechanism includes a connecting frame 2, a hydraulic cylinder 3, a pusher 4, a power motor 5, a turntable 6, and a brush 7. The connecting frame 2 is fixedly installed on the top of the frame 1, the hydraulic cylinder 3 is fixedly installed on the connecting frame 2, the hydraulic rod of the hydraulic cylinder 3 is fixedly connected to the pusher 4, the power motor 5 is fixedly installed on the pusher 4, the output end of the power motor 5 is fixedly connected to the turntable 6, and the brush 7 is fixedly installed on the turntable 6.

[0037] With the above structure, the hydraulic cylinder 3 is activated, which drives the pusher 4 to move down, thereby causing the turntable 6 to move the brush 7 down to a suitable height position. Then, the power motor 5 is activated, causing the turntable 6 to rotate the brush 7, and the brush 7 performs a blunting treatment on the tool.

[0038] Specifically, a fine hole is provided on the inner wall of the bottom of the cavity 16, which is connected to the coarse hole 19. The U-shaped hole 17 is in sealing contact with the fine hole. A vertical hole is provided on the inner wall of the top of the cavity 16, and the vertical rod 12 is vertically slidably installed in the vertical hole.

[0039] With the above structure, when the upright 12 moves downward, the bottom opening of the U-shaped hole 17 will move into the coarse hole 19. Then the suction pipe 18 is connected to the U-shaped hole 17. At this time, the dust on the base 8 is sucked in through the suction hole 15 and then enters the suction pipe 18 through the U-shaped hole 17. The suction pipe 18 is connected to the external vacuuming equipment, and the generated waste is adsorbed and collected by the external vacuuming equipment.

[0040] Specifically, a square groove 20 is provided on the inner wall of the tool adapter groove 10, and the clamping member 14 is slidably installed in the square groove 20. A spring is fixedly connected between the clamping member 14 and the side wall of the square groove 20.

[0041] With the above structure, the clamping member 14 can move within the square groove 20, and the clamping member 14 can stretch the spring when it moves.

[0042] Specifically, the top of the connecting frame 2 has a sliding hole, the push frame 4 is vertically slidably installed in the sliding hole, and the top of the turntable 6 is in contact with the push frame 4.

[0043] The above structure enables the pusher 4 to move stably in the vertical direction.

[0044] Working principle: The carbide tool to be passivated is placed inside the tool adapter slot 10 at the top of the support 9. At this time, the upright 12 is in the initial upward position, the U-shaped hole 17 is offset from the small hole at the bottom of the base 8, and the dust suction pipe is disconnected. The hydraulic oil inside the L-shaped hole 21 is pressureless, and the clamping part 14 retracts into the square slot 20 under the tension of the matching spring. The internal space of the tool adapter slot 10 is completely open, which facilitates quick loading and unloading of the tool. The dust suction pipe 18 is connected to the workshop negative pressure dust collection unit, and the equipment maintains a negative pressure standby state throughout the process.

[0045] After the external vacuuming equipment is started, a negative pressure is continuously formed inside the vacuum pipe 18. The negative pressure acts on the cavity 16 through the coarse hole 19 and the fine hole at the bottom of the base 8. The air pressure in the cavity 16 decreases, forming a pressure difference, which generates a downward suction force on the upright 12. This pushes the upright 12 to slide smoothly downward along the upright hole at the top of the cavity 16. During the downward movement of the upright 12, the active component 13 fixed on it simultaneously slides downward in the L-shaped hole 21 of the side frame 11. The L-shaped hole 21 is filled with hydraulic oil in a sealed manner. The liquid is incompressible. The downward movement of the active component 13 squeezes the hydraulic oil, and the oil pressure drives the driven component inside the L-shaped hole 21 to push out horizontally. The driven member drives the clamping member 14 to slide out along the square groove 20, stretching the spring between the clamping member 14 and the side wall of the square groove 20. The clamping members 14 on both sides move closer together, pressing the tool body from the side to complete the centering and clamping of the tool. Relying on the uniform force transmission of hydraulic oil, the clamping force is stable and controllable, which can avoid the tool from deforming due to excessive clamping or shifting due to excessive loose clamping, and ensure that the tool position is constant during passivation.

[0046] When the upright 12 descends to the end of its clamping stroke, the lower opening of the U-shaped hole 17 on the upright 12 is perfectly sealed and connected with the fine hole at the bottom of the base 8, thus opening the dust suction passage. The metal dust and fine cutting edge debris generated by the passivation brush grinding will settle on the surface of the support 9 and the base 8. The dust suction hole 15 on the top of the base 8 is directly connected to the cavity 16. The negative pressure airflow draws the dust and debris into the cavity 16 from the dust suction hole 15, and then through the fine hole, U-shaped hole 17, coarse hole 19, and dust suction pipe 18 to be transported to the external dust collection equipment for unified collection. This achieves simultaneous passivation and dust removal, preventing dust from scattering and contaminating the processing area, and also preventing debris from getting stuck between the tool and the clamping structure, affecting the clamping accuracy.

[0047] After the tool clamping and dust removal channels are fully established, the tool passivation mechanism is activated. The hydraulic cylinder 3 at the top of the connecting frame 2 extends its hydraulic rod, driving the pusher 4 to move vertically downward smoothly along the sliding hole of the connecting frame 2. The pusher 4 simultaneously drives the power motor 5, the turntable 6, and the brush 7 to descend as a whole, adjusting the brush 7 to the passivation processing height that matches the tool cutting edge. The sliding hole forms a vertical guide limit for the pusher 4, ensuring that the brush's downward trajectory is vertical and without deviation. Then, the power motor 5 is activated, and the motor output drives the turntable 6 to rotate at a uniform speed. The diamond brush 7 fixed at the bottom of the turntable 6 rotates synchronously at high speed. The diamond abrasive grains attached to the brush surface evenly contact the tool cutting edge, performing a small amount of uniform rounding passivation on the cutting edge. This precisely controls the passivation amount, preventing chipping and over-grinding, and improving the quality and service life of the finished tool.

[0048] After the passivation of a single tool is completed, the external vacuum unit is turned off, the negative pressure inside the coarse hole 19 and the cavity 16 disappears, and the downward suction force of the upright rod 12 is released; the spring on the outside of the clamping part 14 rebounds and retracts, pulling the driven part and the clamping part 14 back into the square groove 20, and the hydraulic oil in the L-shaped hole 21 pushes the driving part 13 to drive the upright rod 12 to reset upward, and the U-shaped hole 17 and the fine hole are repositioned to block the dust suction channel. At this time, the tool adapter groove 10 is completely released, and the operator can directly take out the processed tool and put in the next batch of tools to be processed, and carry out batch passivation operations in a cycle.

[0049] The above provides a detailed description of a high-precision passivation device for cutting edges provided by the present invention. Specific embodiments have been used to illustrate the principles and implementation methods of the invention. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A high-precision blunting device for cutting tool edges, characterized in that, include: A frame (1) is provided with a tool passivation mechanism and a tool clamping and dust removal mechanism; The tool clamping and dust removal mechanism includes a base (8), a bearing seat (9), a tool adapter slot (10), a side frame (11), a vertical rod (12), an active component (13), and a clamping component (14). The base (8) is fixedly installed on the frame (1), the bearing seat (9) is fixedly installed on the base (8), the tool adapter groove (10) is opened on the top of the bearing seat (9), the side frame (11) is fixedly installed on the bearing seat (9), the upright (12) is vertically slidably installed on the base (8), the driving member (13) is fixedly installed on the upright (12), the side frame (11) is provided with an L-shaped hole (21), the driving member (13) is slidably sealed in the L-shaped hole (21), the driven member is slidably sealed in the L-shaped hole (21), the driven member is fixedly connected to the clamping member (14), and the L-shaped hole (21) is filled with hydraulic oil.

2. The high-precision passivation device for cutting edges of a tool according to claim 1, characterized in that, The tool clamping dust removal mechanism also includes a dust suction hole (15), a cavity (16), a U-shaped hole (17), a dust suction pipe (18), and a coarse hole (19). The dust suction hole (15) is opened on the top of the base (8), the cavity (16) is opened on the base (8), the U-shaped hole (17) is opened on the upright (12), the coarse hole (19) is opened on the bottom of the frame (1), and the dust suction pipe (18) is fixedly installed in the coarse hole (19).

3. The high-precision passivation device for cutting edges of a tool according to claim 1, characterized in that, The tool blunting mechanism includes a connecting frame (2), a hydraulic cylinder (3), a pusher (4), a power motor (5), a turntable (6), and a brush (7). The connecting frame (2) is fixedly installed on the top of the frame (1). The hydraulic cylinder (3) is fixedly installed on the connecting frame (2). The hydraulic rod of the hydraulic cylinder (3) is fixedly connected to the pusher (4). The power motor (5) is fixedly installed on the pusher (4). The output end of the power motor (5) is fixedly connected to the turntable (6). The brush (7) is fixedly installed on the turntable (6).

4. The high-precision passivation device for cutting edges of a tool according to claim 2, characterized in that, The cavity (16) has a fine hole on the inner wall at the bottom, which is connected to the coarse hole (19), and the U-shaped hole (17) is in sealed contact with the fine hole.

5. The high-precision passivation device for cutting edges of a tool according to claim 1, characterized in that, A square groove (20) is provided on the inner wall of the tool adapter groove (10). The clamping member (14) is slidably installed in the square groove (20). A spring is fixedly connected between the clamping member (14) and the side wall of the square groove (20).

6. The high-precision passivation device for cutting edges of a tool according to claim 2, characterized in that, A vertical hole is provided on the inner wall of the top of the cavity (16), and the vertical rod (12) is vertically slidably installed in the vertical hole.

7. The high-precision passivation device for cutting edges of a tool according to claim 3, characterized in that, The top of the connecting frame (2) has a sliding hole, and the push frame (4) is vertically slidably installed in the sliding hole.

8. The high-precision passivation device for cutting edges of a tool according to claim 3, characterized in that, The top of the turntable (6) is in contact with the pusher (4).

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