Cutter grinding and passivating equipment and passivating process thereof

Abstract

The invention discloses cutter grinding and passivating equipment and a passivating process thereof, and belongs to the technical field of cutter machining, the cutter grinding and passivating equipment comprises a material taking device and a placing frame, the material taking device comprises a material taking disc, and a plurality of material taking assemblies are arranged on the material taking disc; the placing rack comprises a first placing rack and a second placing rack, and a plurality of placing holes are formed in the first placing rack and the second placing rack; the material taking device is rotationally arranged between the first containing frame and the second containing frame, and material taking assemblies on the material taking disc are correspondingly matched with the containing holes. The cutter on the material taking assembly is placed in a slurry barrel, the cutting edge of the cutter is immersed in slurry, the cutter and the stirring blade are rotated for the first time, the rotating direction of the cutter is the direction opposite to the cutting edge, and the rotating direction of the stirring blade is the direction along the cutting edge; the rotating direction of the cutter is the direction along the cutting edge, and the rotating direction of the stirring blade is the direction opposite to the cutting edge.

Description

Technical Field

[0001] The invention relates to a milling cutter passivation technology, and more specifically, to a tool grinding passivation device and a passivation process thereof. Background Art

[0002] The grinding passivation process currently used is basically to immerse the milling cutter in a special grinding slurry, rotate the milling cutter, and passivate the milling cutter edge through the collision of the grinding particles in the slurry with the milling cutter, thereby extending the tool life; however, the grinding slurry in the slurry is mostly in a precipitated state because of the grinding metal particles inside. Even if the tool rotates after being immersed, it can only drive the grinding slurry in a part of the surrounding area, and there is still a lot of grinding slurry underneath. In addition, the fixation of the milling cutter requires manual operation and clamping on the tooling, and then immersion and self-rotation polishing; after the passivation is completed, it also needs to be manually removed and a new tool installed for the next passivation.

[0003] For example: Chinese patent announcement number CN114850979B, announcement date September 13, 2022, invention name is a mechanical passivation device for cemented carbide tool cutting edge; the application discloses a milling cutter passivation device, including a machine base, a driving motor is provided at the bottom of the machine base, a positioning plate is fixedly connected to the top of the machine base through a support rod, and an intermediate rotating shaft is provided on the middle movable sleeve of the top of the machine base, the intermediate rotating shaft is driven to rotate by the driving motor, the linkage rotating shaft rotates simultaneously with the intermediate rotating shaft, and the linkage rotating shaft reciprocates with the positioning rotating shaft as the axis when the intermediate rotating shaft rotates. The mechanical passivation device for cemented carbide tool cutting edge, by arranging a plurality of reciprocating tool seats above the positioning plate, and the tool seats are rotatable, and cooperate with a full circle of rotatable push shafts inside the tool seat, can simultaneously passivate multiple tools, thereby improving work efficiency, and adjusting the inclination angle of the contact part between the tool and the brush on the tool seat, changing the position where the brush contacts the milling cutter groove, further improving the overall passivation effect of the tool. However, this solution requires manual clamping of the milling cutter, has a low degree of automation, and its passivation effect needs to be improved. Summary of the invention

[0004] The present invention overcomes the problem of poor passivation effect of existing tool grinding and passivation equipment, and provides a tool grinding and passivation equipment and a passivation process thereof. This solution can greatly improve the passivation effect of the milling cutter, improve the quality of the milling cutter product, and the passivation process is relatively simple.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a tool grinding and passivation equipment, including a material picking device and a placement rack, the material picking device includes a material picking tray, and the material picking tray is provided with a plurality of material picking components; the placement rack includes a first placement rack and a second placement rack, and the first placement rack and the second placement rack are provided with a plurality of placement holes; the material picking device is rotatably arranged between the first placement rack and the second placement rack, and the material picking components on the material picking tray are adapted to the placement holes. In this scheme, the material picking device is used to clamp the milling cutter, the first placement rack is used to place the tool to be passivated, and the second placement rack is used to place the tool that has been passivated. The material picking device can move back and forth on the first placement rack and the second placement rack by rotating, and the number of the material picking components on the material picking tray is the same as that of the placement holes on the placement rack and they are aligned, thereby improving the efficiency of picking and unloading.

[0006] Preferably, a slurry barrel is further included, the slurry barrel is adapted to the material taking tray, and a stirring blade is rotatably arranged in the slurry barrel. The slurry barrel is used to hold abrasive slurry for passivation of the cutting tool, the material taking tray can be placed in the slurry barrel, so that the milling cutter on the material taking tray can be placed in the slurry barrel for passivation, and the stirring blade can stir the slurry in the slurry barrel, so that the slurry is more uniform and the passivation effect of the milling cutter is better.

[0007] Preferably, the material taking assembly comprises a rotating part, a clamping part and a locking part, wherein the rotating part is provided with a transmission gear; the clamping part is fixedly connected to the rotating part; the locking part comprises a locking motor provided on the clamping part; the bottom of the clamping part is provided with a locking tooth, and the output end of the locking motor is provided with a locking wheel meshing with the locking tooth. The rotating part can drive the entire material taking assembly to rotate independently, and the clamping part and the locking part can clamp and lock the milling cutter.

[0008] Preferably, the clamping part comprises a jacket, the middle part of the jacket is a vertical hollow body, and the edges are evenly distributed with gaps. The inside of the jacket is used to accommodate the smooth part of the milling cutter, while the cutting edge is located outside the jacket, and the gaps at the edge of the jacket can ensure that the milling cutter is placed in the jacket and clamped.

[0009] Preferably, the rotation direction of the rotating part is opposite to that of the stirring blade. The rotation direction of the rotating part is the rotation direction of the tool. The rotation direction of the tool is opposite to that of the stirring blade, which can improve the passivation effect of the milling cutter and eliminate metal particles on the surface of the tool.

[0010] Preferably, the material taking tray is further provided with a transmission component, the material taking component and the transmission component are alternately arranged in an annular manner on the material taking tray, and the material taking component and the transmission component are connected by a transmission belt. The transmission component on the material taking tray is used to transmit power to the material taking component, and all the material taking components and the transmission component are connected by a transmission belt, so that the material taking components rotate synchronously, thereby improving the transmission efficiency and the passivation efficiency.

[0011] Preferably, the material taking device is further provided with a driving device, and a driving belt is provided between the driving device and the transmission component. The driving device outputs power to drive the driving belt, and finally drives one of the transmission components to rotate, and the rotation of the transmission component can drive all the material taking components to rotate together through the transmission belt.

[0012] Preferably, the material taking device is further provided with a fixing frame, which is vertically slidably connected to the material taking device and is fixedly connected to the material taking tray. The fixing frame is used to fix the material taking device, and the lifting and lowering of the fixing frame can drive the material taking tray to lift and lower together, so as to realize the transfer of the material taking tray between the placing rack and the material taking bucket.

[0013] A tool passivation process is implemented using the above-mentioned tool grinding and passivation equipment, including the following steps: S1: put the tool on the material collection component into the slurry barrel and immerse the tool edge in the slurry and the maximum penetration is more than 4mm; S2: rotate the tool and the stirring blade for the first time, the tool rotates in the direction opposite to the edge, and the stirring blade rotates in the direction along the edge; the passivation time is 5 to 7 minutes; S3: rotate the tool and the stirring blade for the second time, the tool rotates in the direction along the edge, and the stirring blade rotates in the direction opposite to the edge; the passivation time is 1 to 2 minutes. In this scheme, the first rotation process of the tool (in the direction opposite to the edge) is the main step of passivation, which takes a long time, and the second rotation direction is in the direction along the edge to reverse and knock off the raised small particles of slurry after the first passivation is completed, which takes a short time.

[0014] Preferably, the rotation speed of the tool is greater than 3000 revolutions per minute, and the rotation speed of the stirring blade is greater than 1500 revolutions per minute.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) it can improve the passivation effect and passivation efficiency of the milling cutter, while improving the surface quality of the tool; (2) it is automated and does not require excessive manual intervention, thus reducing manpower consumption; (3) the equipment has a simple working mode and can perform passivation operations on multiple sets of tools at the same time, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the present invention.

[0017] Figure 2It is an axonometric drawing of the present invention.

[0018] Figure 3 It is an axonometric view of the material taking device of the present invention.

[0019] Figure 4 It is a schematic diagram of the slurry barrel structure of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the placement rack of the present invention.

[0021] Figure 6 It is a cross-sectional view of the material taking device of the present invention.

[0022] Figure 7 It is a top view of the material taking device of the present invention.

[0023] Figure 8 It is a schematic diagram of the structure of the material taking tray of the present invention.

[0024] Fig. 9 It is an axonometric view of the material taking assembly of the present invention.

[0025] Fig.10 It is a cross-sectional view of the material taking assembly of the present invention.

[0026] Fig.11 It is an axonometric view of the jacket of the present invention.

[0027] Fig.12 It is a cross-sectional view of the jacket of the present invention.

[0028] In the figure: 1. material taking device, 2. material taking tray, 3. material taking assembly, 4. first placement rack, 5. second placement rack, 6. placement hole, 7. slurry barrel, 8. rotating part, 9. clamping part, 10. locking part, 11. transmission gear, 12. locking motor, 13. locking tooth, 14. locking wheel, 15. jacket, 16. gap, 17. transmission assembly, 18. transmission belt, 19. driving device, 20. driving belt, 22. tool, 23. placement tray , 24. Rotating frame, 25. Fixed frame, 26. Cylinder, 27. Four-position indexing plate, 28. Mounting plate, 29. Top plate, 30. Chassis, 31. Spindle, 32. Rotating seat, 33. Mounting bracket, 34. Long round through hole, 35. Fixed base, 36. Transmission wheel, 37. Driving device mounting plate, 38. Driving wheel, 39. Support foot, 40. Driving bracket, 41. Rotating motor, 42. Rotating shaft, 43. Bump, 44. Groove. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] Example 1: Figures 1 to 12The tool grinding and passivation equipment shown in the figure includes a material taking device 1, a placing rack and a slurry barrel 7, wherein the placing rack includes a first placing rack 4 and a second placing rack 5, the first placing rack 4 and the second placing rack 5 are symmetrically arranged on both sides of the material taking device 1, and the slurry barrel 7 is arranged on one side of the material taking device 1 and between the first placing rack 4 and the second placing rack 5, and the material taking device 1 is provided with a material taking tray 2, and the material taking tray 2 is provided with a material taking assembly 3, and the material taking assembly 3 can be used to clamp the tool 22. The material taking device 1 can rotate as a whole, passing through the first placing rack 4, the slurry barrel 7 and the second placing rack 5 in sequence, so as to complete the loading, passivation and unloading operations of the tool.

[0031] Among them, the first placement rack 4 is used to place the tool 22 before passivation, and the second placement rack 5 is used to place the tool 22 after passivation, and the tool 22 is specifically a milling cutter. The overall structure of the first placement rack 4 and the second placement rack 5 is the same, and a placement hole 6 is set on the first placement rack 4 and the second placement rack 5; specifically, a placement plate 23 is set on the top of the first placement rack 4 and the second placement rack 5, and 10 groups of placement holes 6 are set on the top of the placement plate 23. The 10 groups of placement holes 6 are evenly arranged in an annular shape on the upper surface of the placement plate 23, and the placement holes 6 can be fixed on the placement plate 23 by fasteners such as screws. The aperture size of the placement hole 6 is slightly larger than the radial size of the tool 22. Generally, it is designed that there is a gap of 0.1mm between the tool 22 and the inner wall of the placement hole 6, which is conducive to the placement and clamping of the tool 22 and will not wear the tool 22 and damage the cutting edge. It should be noted that when the cutter 22 is placed in the placement hole 6, the cutting edge of the cutter 22 is located in the placement hole 6, so a rounded corner or chamfer is also provided at the placement hole 6 to prevent the mouth of the placement hole 6 from damaging the cutting edge of the cutter 22, and also to prevent the mouth of the placement hole 6 from being damaged. The cutting edge of the cutter 22 is arranged downward in the placement hole 6, so that when the material taking component 3 clamps the cutter 22, the cutting edge of the cutter 22 is always at the bottom, and the smooth part of the cutter 22 is at the top, which is conducive to the material taking component 3 clamping the smooth part of the cutter 22, and is also conducive to the cutting edge being immersed in the slurry in the slurry barrel 7.

[0032] The material taking device 1 includes a rotating frame 24, a fixed frame 25, a driving assembly and other structures. The rotating frame 24 is a bracket structure with a large bottom and a small top. A four-station indexing plate 27 is arranged at the bottom of the rotating frame 24. The bottom of the rotating frame 24 is fixed to the output end of the four-station indexing plate 27. The four-station indexing plate 27 rotates at an angle of 90° each time, so that the rotating frame 24 rotates at an angle of 90° each time. A fixed frame 25 is arranged on the rotating frame 24. Specifically, one side of the rotating frame 24 is a vertically arranged rod frame, and on this side, a vertically arranged slide rail is arranged on the rotating frame 24. The fixed frame 25 is a horizontally arranged bracket structure. A slider is arranged on one side of the fixed frame 25. The slider on the fixed frame 25 is slidably connected to the slide rail on the rotating frame 24, so that the fixed frame 25 can move in the vertical direction along the rotating frame 24. Specifically, a horizontally arranged mounting plate 28 is provided on the rotating frame 24, and a driving assembly is provided on the mounting plate 27. The driving assembly includes two groups of cylinders 26, and the telescopic ends of the cylinders 26 are fixedly connected to the fixed frame 25. Since the fixed frame 25 is constructed of two groups of parallel brackets, two groups of cylinders 26 are required to support and drive the fixed frame 25 to improve the stability of the fixed frame 25. A material taking tray 2 is fixedly connected to one end of the fixed frame 25 away from the rotating frame 24, and 10 groups of material taking assemblies 3 are provided on the material taking tray 2, and the number of the material taking assemblies 3 is the same as the number of the placement holes 6 on the placement frame.

[0033] When the four-station indexing plate 27 drives the material picking plate 2 on the rotating frame 24 to rotate to the first placement frame 4, the material picking plate 2 will be located above the first placement frame 4, and at this time, the material picking component 3 on the material picking plate 2 is aligned with the placement hole 6 on the first placement frame 4. Driven by the cylinder 26, the fixed frame 25 gradually descends, driving the material picking plate 2 to gradually approach the placement hole 6 on the first placement frame 4, and then the material picking component 3 can clamp and take out the tool 22 in the placement hole 6. After the material picking component 3 clamps the tool 22, the cylinder 26 is started again to drive the fixed frame 25 to rise and lift up, so that the tool 22 is separated from the placement hole 6, and then the four-station indexing plate 27 is rotated 90° again, and the material picking plate 2 is rotated to the top of the slurry barrel 7. Then the cylinder 26 is started to drive the fixed frame 25 to move downward, and the material picking plate 2 gradually approaches the slurry barrel 7, and the tool 22 on the material picking component 3 can be immersed in the slurry in the slurry barrel 7. When the passivation work of the tool 22 is completed, the cylinder 26 is started again to drive the fixed frame 25 to move upward, and the tool 22 is taken out of the slurry barrel 7, and then the four-station indexing plate 27 is rotated once to rotate the material picking plate 2 to the position of the second placement frame 5. At this time, the material picking plate 2 is located above the second placement frame 5, and the placement hole 6 on the second placement frame 5 is aligned with the position of the material picking component 3 on the material picking plate 2; the cylinder 26 is started to drive the fixed frame 25 to move downward, so that the material picking plate 2 gradually approaches the placement hole 6 on the second placement frame 5 until the tool 22 on the material picking component 3 enters the placement hole 6, and then the material picking component 3 releases the tool 22, so that the tool 22 is located in the placement hole 6, the cylinder 26 is started again, driving the fixed frame 25 to move upward, driving the material picking plate 2 away from the placement hole 6 on the second placement frame 5, so that the tool 22 is separated from the material picking component 3, thereby completing a complete passivation operation of the tool 22, and then the four-station indexing plate 27 repeats the above steps to perform the passivation operation of the next batch of tools 22.

[0034] The material taking tray 2 includes a top tray 29 and a bottom tray 30, both of which are two hollow annular trays. The top tray 29 and the bottom tray 30 are arranged in parallel and maintain a certain interval. Specifically, the top tray 29 and the bottom tray 30 are connected together by bolts, and the connection position is located near the inner diameter and outer diameter of the top tray 29 and the bottom tray 30, so that the top tray 29 and the bottom tray 30 become a whole. The fixing frame 25 is fixed to the top tray 29, and the fixing point is located at the center of the circle of the material taking tray 2 to improve the fixing strength. A plurality of groups of through holes are provided on the bottom tray 30, specifically, 20 groups of through holes are provided, of which 10 groups of through holes are used to install the material taking assembly 3, and 10 groups of through holes are used to install the transmission assembly 17; the through holes are distributed around the circumference of the bottom tray 30, and the intervals between each group of through holes are the same, and the transmission assembly 17 and the material taking assembly 3 are alternately distributed in the through holes.

[0035] Specifically, the material taking assembly 3 includes a rotating part 8, a clamping part 9 and a locking part 10 from top to bottom. The rotating part 8 is a cylindrical structure as a whole. The rotating part 8 includes a main shaft 31 and a rotating seat 32 sleeved on the outside of the main shaft. The rotating seat 32 is a stepped cylindrical structure. A plurality of mounting holes are provided on the rotating seat 32, which can be used for fixed connection between the rotating seat 32 and the chassis 30. The steps on the rotating seat 32 can also ensure that the rotating part 8 is fixed on the chassis 30 and will not fall off. A bearing structure is provided inside the rotating seat 32 to ensure that the main shaft 31 can rotate normally in the rotating seat 32. A transmission gear 11 is arranged at the top of the main shaft 31, and the bottom of the main shaft 31 is clamped on the top of the clamping part 9. The clamping part 9 is also a cylindrical structure. The center of the clamping part 9 is a vertical cylindrical hollow body. A sleeve 15 structure is arranged in the clamping part 9. The sleeve 15 can clamp or release the tool 22 placed inside, so as to realize the taking and placing operation of the tool 22. A locking portion 10 is also provided on the outside of the clamping portion 9, and the locking portion 10 includes a mounting bracket 33. The mounting bracket 33 is an inverted L-shaped structure. The upper portion of the mounting bracket 33 is fixedly connected to the upper surface of the clamping portion 9, and the lower portion of the mounting bracket 33 is located below the clamping portion 9 and is aligned with the bottom of the jacket 15. A locking motor 12 is provided below the mounting bracket 33, and a locking wheel 14 is fixedly connected to the output end of the locking motor 12. The locking wheel 14 is a gear structure, and the bottom of the jacket 15 is provided with circumferentially distributed locking teeth 13, and the locking wheel 14 can be meshed and connected with the locking teeth 13; when the locking motor 12 is started and the locking 14 is driven to rotate, the locking teeth 13 on the jacket 15 can be driven to rotate, thereby locking or releasing the jacket 15.

[0036] Specifically, Figures 10 to 12As shown, the jacket 15 is a structure with an elongated top and a disc-shaped bottom, and the inside of the jacket 15 is a hollow structure. Three vertically distributed gaps 16 are provided on the elongated part of the jacket 15, and a group of vertically arranged oblong through holes 34 are arranged on each gap 16. Due to the existence of the gaps 16 on the jacket 15, the bottom position of the jacket 15 can be tightened or opened, so as to achieve the clamping (tightening) and loosening of the jacket 15 on the tool 22. The oblong through holes 34 on the jacket 15 can reduce the internal stress after the jacket 15 clamps the tool 22, and can prevent the jacket 15 from clamping the tool 22 too tightly and causing internal damage. A locking tooth 13 is also provided at the bottom of the jacket 15. The locking tooth 13 is a circular ring structure. An external thread is provided on the outer surface of the bottom of the jacket 15, and an internal thread is provided on the annular inner wall of the locking tooth 13, so that the locking tooth 13 is threadedly connected to the outer side of the bottom of the jacket 15. The locking teeth 13 are threadedly connected to the outside of the jacket 15 from bottom to top. When the threaded connection between the locking teeth 13 and the jacket 15 increases, the gap 16 on the surface of the jacket 15 decreases, and the jacket 15 is in a tightened state and clamps the tool 22. When the threaded connection between the locking teeth 13 and the jacket 15 decreases, the gap 16 on the surface of the jacket 15 increases, and the jacket 15 is in a relaxed state and releases the tool 22. Of course, the locking teeth 13 can also be threadedly connected to the outside of the jacket 15 from top to bottom. Regardless of which connection method is used, the bottom of the jacket 15 needs to be in a certain tilted state, so that the jacket 15 can be tightened and relaxed only when the locking teeth 13 and the jacket 15 are threadedly transmitted. The bottom of the locking teeth 13 is a continuously distributed tooth that can rotate with the locking wheel 14 on the locking motor 12. It should be noted that the gear teeth on the locking wheel 14 are vertically distributed with the locking teeth 13, and the locking teeth 13 are rotatably arranged at the bottom of the clamping part 9. When the locking motor 12 is started, the locking wheel 14 is driven to rotate, and then the locking teeth 13 are driven to rotate. The locking teeth 13 rotate around the bottom of the clamping part 9, and the sleeve 15 can also perform a certain axial movement inside the clamping part 9. Through threaded transmission, the sleeve 15 moves axially and clamps or releases the tool 22.

[0037] In the initial state, the jacket 15 is in a relaxed state. When the tool 22 enters the jacket 15, the locking motor 12 is started, driving the locking wheel 14 to rotate, and then driving the locking tooth 13 to rotate, a thread transmission is generated between the locking tooth 13 and the jacket 15, and the jacket 15 gradually rises in the clamping part 9, and tightens and clamps the tool 22. When the tool 22 is clamped, the locking motor 12 stops and self-locks to ensure that the tool 22 is in a clamped state. After the tool 22 is passivated, and the tool 22 is located in the placement hole 6 of the second placement rack 5, the locking motor 12 rotates in the reverse direction, driving the locking wheel 14 to rotate in the reverse direction, and then driving the locking tooth 13 to rotate in the reverse direction, a thread transmission is generated between the locking tooth 13 and the jacket 15, and the jacket 15 gradually descends in the clamping part 9, and releases the tool 22, so that the tool 22 is located in the placement hole 6 of the second placement rack 5.

[0038] The transmission assembly 17 includes a fixed base 35 and a transmission wheel 36 disposed on the fixed base 35. The fixed base 35 is fixedly connected to the chassis 30. The fixed base 35 is provided with a bearing and a connecting shaft inside, which can be used for the rotation of the transmission wheel 36. A transmission belt 18 is provided on the transmission wheel 36 of the transmission assembly 17 and the transmission gear 11 of the material taking assembly 3. Since the transmission wheel 36 and the transmission gear 11 are both gear structures, the transmission belt 18 is also a toothed belt structure, such as Figure 7 or Figure 8 As shown, the transmission belt 18 is cross-wound around the transmission wheels 36 and the transmission gears 11, so that all the transmission wheels 36 and the transmission gears 11 rotate synchronously, and all the transmission gears 11 rotate in the same direction.

[0039] A driving device 19 is also provided at the connection position between the rotating frame 24 and the fixed frame 25. The driving device 19 is specifically a rotating motor. Specifically, a driving device mounting plate 37 is fixed on the fixed frame 25, and the driving device 19 is installed at the bottom of the driving device mounting plate 37. The output end of the driving device 19 is located above the driving device mounting plate 37, and a driving wheel 38 is provided at the output end of the driving device 19. The driving wheel 38 can rotate under the action of the driving device 19. A driving belt 20 is connected to the driving wheel 38 and the transmission wheel 36. Therefore, through the operation of the driving device 19, the driving wheel 38 rotates to drive the driving belt 20 to transmit, and then drives the transmission wheel 36 on the transmission component 17 to rotate. The transmission wheel 36 rotates to drive the transmission belt 18 to move, and then drives the transmission gears 11 on all the material picking components 3 to rotate. Therefore, all the material picking components 3 rotate synchronously and in the same direction, that is, the tools 22 all rotate synchronously in the same direction.

[0040] The slurry barrel 7 is a cylindrical barrel structure, and a support foot 39 is provided at the bottom of the slurry barrel 7, so that the opening height of the slurry barrel 7 is close to the height of the placement frame, so as to avoid excessive vertical displacement of the material taking plate 2 on the material taking device 1. A fixed bracket (not shown in the figure) is provided in the slurry barrel 7, and a stirring blade (not shown in the figure) is rotatably connected to the fixed bracket. The stirring blade includes four blades that can effectively stir the slurry in the slurry barrel 7, and the stirring blade is located near the bottom of the slurry barrel 7. Due to its own structure and the effect of the fixed frame 25, the material taking plate 2 will not enter the slurry barrel 7 too deep. In this way, on the one hand, interference between the stirring blade and the cutter 22 can be avoided, and on the other hand, the stirring blade can stir the slurry at the bottom so that the slurry is always kept uniform.

[0041] A blade drive device is arranged above the slurry barrel 7, and the blade drive device includes a drive bracket 40, on which a slide rail is arranged, and a rotary motor 41 is slidably connected, and a rotating shaft 42 is arranged at the output end of the rotary motor 41, and a straight-shaped protrusion 43 is arranged at the end of the rotating shaft, and a straight-shaped groove 44 is arranged at the top of the rotating shaft of the stirring blade, and the protrusion 43 and the groove 44 can be clamped together and circumferentially limited. When the material taking plate 2 rotates to the position of the slurry barrel 7, and the cutter 22 is immersed in the slurry, the rotary motor 41 moves downward at this time, driving the rotating shaft 42 and the stirring blade to clamp, and finally realizing the rotation of the stirring impeller.

[0042] It should be noted that the rotation direction of the material taking component 3 is opposite to that of the stirring impeller, that is, the rotation direction of the tool 22 is opposite to that of the stirring impeller, which can improve the passivation effect of the tool 22 and improve the surface quality of the tool 22.

[0043] A tool passivation process is implemented using the above-mentioned tool grinding and passivation equipment, and includes the following steps.

[0044] First, all structures on the equipment are debugged and calibrated to ensure the consistency of the material tray 2, the placement rack and the slurry barrel 7. The material tray 2 can be in the accurate position every time it reaches the corresponding position to ensure the clamping, passivation and unloading of the tool 22.

[0045] For slurry preparation, a grinding passivation solution is prepared using a ratio of 60% water, 8% cobalt powder, 7% tungsten powder, 15% polishing liquid, and 10% walnut shell powder. The particle size of the cobalt powder in the grinding liquid is required to be 3.0~5.0 microns, and the particle size of the nickel powder in the grinding liquid is required to be 3.0~5.0 microns.

[0046] Then the four-station indexing plate 27 is started to rotate the material taking plate 2 to the position of the first placement rack 4, and the tool 55 located on the first placement rack 4 is clamped by the jacket 15 on the material taking assembly 3. Then the four-station indexing plate 27 continues to drive the material taking plate 2 to rotate to the position of the slurry barrel 7, and the tool 22 on the material taking plate 2 enters the slurry in the slurry barrel 7 through the cylinder 26. When the tool 22 is immersed in the slurry, it is necessary to ensure that the cutting edge of the tool 22 is completely immersed in the slurry, and a part of it needs to be immersed in excess, and the excess immersion part is 5mm deep; in this way, when the tool 22 rotates, since the cutting edge is located inside the slurry, the lifting of the grinding slurry can be reduced.

[0047] After the cutter 22 is immersed in the slurry, the cutter 22 is rotated and passivated twice. Specifically, the first rotation direction of the cutter 22 is in the direction opposite to the cutting edge, while the rotation direction of the stirring blade is in the direction along the cutting edge of the cutter 22, and the rotation speed of the cutter 22 is maintained at 3500 rpm, the rotation speed of the stirring blade is 1800 rpm, and the passivation time is 6 minutes; after the first passivation operation is completed, the second passivation operation is performed, specifically, the rotation direction of the cutter 22 is in the direction along the cutting edge, the rotation direction of the stirring blade is in the direction opposite to the cutting edge of the cutter 22, and the rotation speed of the cutter 22 is maintained at 3500 rpm, the rotation speed of the stirring blade is 1800 rpm, and the passivation time is 2 minutes; in this scheme, the first rotation process of the cutter 22 (in the direction opposite to the cutting edge) is the main step of the passivation, which takes a long time, and the second rotation direction is in the direction along the cutting edge in order to reverse and knock off the protruding small particle slurry after the first passivation is completed, which takes a short time.

[0048] Finally, the passivated tool 22 is taken out from the slurry barrel 7 by the material taking device 1 and transferred to the placement hole 6 on the second placement rack 5, waiting for the product to be transferred to the next process.

Claims

1. A tool grinding and passivation device, characterized in that: include A material taking device, the material taking device comprising a material taking tray, and the material taking tray is provided with a plurality of material taking components; A placement rack, comprising a first placement rack and a second placement rack, wherein the first placement rack and the second placement rack are provided with a plurality of placement holes; The material taking device is rotatably arranged between the first placement rack and the second placement rack, and the material taking component on the material taking tray is adapted to correspond to the placement hole.

2. A tool grinding and passivation device according to claim 1, characterized in that: It also includes a slurry barrel, which is adapted to the material taking plate, and a stirring blade is rotatably arranged inside the slurry barrel.

3. A tool grinding and passivation device according to claim 2, characterized in that: The material taking component comprises A rotating part, on which a transmission gear is provided; A clamping part, the clamping part is fixedly connected to the rotating part; A locking portion, comprising a locking motor disposed on the clamping portion; The bottom of the clamping part is provided with a locking tooth, and the output end of the locking motor is provided with a locking wheel meshed with the locking tooth.

4. A tool grinding and passivation device according to claim 3, characterized in that: The clamping part comprises a jacket, the middle part of the jacket is a vertical hollow body, and the edges are evenly distributed with gaps.

5. A tool grinding and passivation device according to claim 4, characterized in that: The rotating direction of the rotating portion is opposite to the rotating direction of the stirring blade.

6. The tool grinding and passivation equipment according to claim 1, characterized in that: The material taking tray is also provided with a transmission component, the material taking component and the transmission component are alternately arranged in a ring shape on the material taking tray, and the material taking component and the transmission component are connected through a transmission belt.

7. The tool grinding and passivation equipment according to claim 6, characterized in that: The material taking device is also provided with a driving device, and a driving belt is provided between the driving device and the transmission component.

8. A tool grinding and passivation device according to any one of claims 1 to 7, characterized in that: The material taking device is also provided with a fixing frame, which is vertically slidably connected to the material taking device and is fixedly connected to the material taking tray.

9. A tool passivation process, characterized in that: The method is implemented by using a tool grinding and passivation device as claimed in any one of claims 1 to 8, comprising the following steps: S1: Place the cutter on the material taking assembly into the slurry bucket and immerse the cutting edge of the cutter in the slurry with the cutting edge entering more than 4 mm; S2: The tool and the stirring blade are rotated for the first time, the tool rotates in the opposite direction of the cutting edge, and the stirring blade rotates in the same direction of the cutting edge; the passivation time is 5 to 7 minutes; S3: The tool and the stirring blade are rotated twice, the tool rotates in the direction of the cutting edge, and the stirring blade rotates in the direction against the cutting edge; the passivation time is 1 to 2 minutes.

10. A tool passivation process according to claim 9, characterized in that: The rotation speed of the tool is greater than 3000 revolutions per minute, and the rotation speed of the stirring blade is greater than 1500 revolutions per minute.

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