PVD coating processing device and method for cemented carbide cutting tool

Abstract

The present invention relates to the technical field of metal material coating. Disclosed are a PVD coating processing device and method for a cemented carbide cutting tool. The PVD coating processing device comprises a base plate, wherein a work electric motor for rotational drive is fixedly connected to the top end of the base plate; fixing supports are rotationally connected to both sides of the end of the work electric motor away from the base plate, a fixing nut is threadedly connected to the end of each fixing support penetrating the top end of the work electric motor, and a control electric motor is fixedly connected to the end of the work electric motor away from the base plate; and a lifting base plate is mounted at the end of the work electric motor away from the base plate, and a work hanger for mounting a cemented carbide cutting tool to be processed is mounted at the end of the lifting base plate away from the work electric motor. In addition, when in use, the present invention uses a built-in automatic-fixation mounting means, enabling the mounted cemented carbide cutting tool to remain stable during both actual coating and rotational movement.

Description

A PVD coating processing apparatus and method for cemented carbide cutting tools Technical Field

[0001] This invention relates to the field of metal coating technology, specifically to a PVD coating processing device and method for cemented carbide cutting tools. Background Technology

[0002] PVD is a physical material transfer process that can transfer atomic or molecular matter from one object to another, thereby giving it superior performance. In the production of cemented carbide cutting tools, in order to improve the service life of cemented carbide cutting tools, advanced metal materials are used to vacuum coat the surface of cemented carbide cutting tools in a vacuum environment using PVD coating equipment, which can form a film layer with wear resistance and corrosion resistance. Technical issues

[0003] The prior art discloses a multi-arc ion plating equipment for spraying coatings on PVD tools, application number CN202310905806.4. The supporting force of the telescopic rod and the elastic force of the first spring are combined to facilitate the removal of the insert rod from the inside of the fixed column. Then, the connecting component, limiting component, connecting frame, positioning component and bearing basket are taken out from the inside of the coating box, so as to facilitate the subsequent removal and arrangement of the tools hanging on the hook.

[0004] However, existing technologies suffer from a lack of guaranteed tool stability during use. Carbide tools suspended in a movable manner are susceptible to wobbling due to external factors during PVD coating, which can negatively impact the coating effect. Furthermore, there is a lack of corresponding cleaning solutions, resulting in insufficient and timely removal of dirt adhering to the carbide tools before and after treatment. Technical solutions

[0005] To address the shortcomings mentioned in the background section, the present invention aims to provide a PVD coating processing apparatus and method for cemented carbide cutting tools.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A PVD coating processing device and method for cemented carbide cutting tools includes a base plate, and a working motor for rotary drive is fixedly connected to the top of the base plate.

[0008] The working motor is rotatably connected to fixed brackets on both sides of the end away from the base plate. The fixed bracket is threaded with a fixed nut at the end of the working motor that passes through the top of the working motor. The working motor is fixedly connected to a control motor at the end away from the base plate.

[0009] A lifting base plate is installed at the end of the working motor away from the base plate, and a work hanger for installing the carbide tools that need to be processed is installed at the end of the lifting base plate away from the working motor.

[0010] The working frame is a hexagonal frustum, with a working hanging rod fixedly connected to each side wall, and a hanging base plate fixedly connected to the end of each working hanging rod away from the working frame.

[0011] A vacuum fan for auxiliary vacuuming is fixedly installed at the top of the base plate, and a fan motor for controlling the vacuum fan is fixedly installed on the outside of the vacuum fan. A cleaning base is fixedly installed at the top of the base plate.

[0012] Furthermore, a bottom sliding groove and a bottom bracket are fixedly connected to the top of the base plate, with the bottom bracket fixedly installed inside the bottom sliding groove.

[0013] Furthermore, a motor output rod is fixedly connected to the end of the control motor away from the working motor, and a connecting bracket is fixedly installed at the end of the motor output rod away from the control motor. Multiple connecting side rods are arranged in an array at the end of the connecting bracket away from the motor output rod, and the same connecting ring is fixedly connected to the end of the multiple connecting side rods away from the connecting bracket.

[0014] Furthermore, a sealing groove is fixedly connected to the end of the lifting base plate away from the base plate, a lifting connecting rod is provided on the outside of the sealing groove, the lifting connecting rod is fixedly connected to the outer top of the lifting base plate, a lifting moving groove is opened on the inner side of the lifting connecting rod, a lifting moving frame is slidably connected on the inner side of the lifting moving groove, multiple lifting wheel motors are fixedly connected on the inner side of the lifting moving frame, a lifting hanging frame is fixedly connected to the end of the lifting moving frame away from the lifting base plate, a connecting hanging rod is fixedly connected to the end of the lifting hanging frame away from the lifting connecting rod, a processing furnace is fixedly connected to the end of the connecting hanging rod near the lifting base plate, a rotating base plate is rotatably connected to the top of the lifting base plate, and the bottom end of the rotating base plate is fixedly connected to the top of the connecting hanging ring;

[0015] Heating elements and discharge substrates are fixedly connected to the inner sidewall of the processing furnace, and a vent is fixedly connected to the bottom of the inner sidewall of the processing furnace.

[0016] Furthermore, a suspension rod is fixedly connected to the end of the suspension base plate away from the working hanging rod, a movable fixed push plate is slidably connected to the inner side of the suspension rod, a connecting spring is fixedly connected to the inner side of the suspension rod, and a pressure plate is fixedly connected to the end of the connecting spring away from the suspension rod.

[0017] Furthermore, a push tip plate is fixedly connected to the bottom end of the pressing plate, and the push tip plate is slidably installed on the top of the movable fixed push plate. An electric rod is slidably connected to the inner side of the working hanging rod. A connecting ring is fixedly connected to the end of the electric rod away from the suspension rod. A connecting bracket is fixedly connected to the inner side of the connecting ring. An insulating baffle is installed on the outer side of the connecting bracket. The top of the insulating baffle is fixedly connected to the inner wall of the working hanging frame. A connecting inner rod is fixedly connected to the bottom end of the connecting bracket. The connecting inner rod is fixedly installed inside the insulating baffle.

[0018] Furthermore, a blower inlet / outlet plate is fixedly connected to the end of the vacuum blower away from the base plate, and a blower inlet and outlet are opened at the top of the blower inlet / outlet plate. A blower connecting frame is fixedly connected to the output end of the vacuum blower.

[0019] Furthermore, a motor connecting plate is fixedly connected to the end of the fan motor away from the base plate, a motor base is fixedly connected to the end of the fan motor near the base plate, a motor control board is fixedly connected to the end of the motor connecting plate away from the fan motor, and a motor output ring is fixedly connected to the end of the fan motor near the vacuum blower.

[0020] Furthermore, a rotation control screw is threadedly connected to the inner side of the cleaning base. A rotation push plate is rotatably connected to the end of the rotation control screw away from the cleaning base. A fixed rod is fixedly connected to the end of the rotation push plate away from the cleaning base. A movable connecting frame is fixedly connected to the end of the fixed rod away from the rotation push plate. A movable guide groove is provided at the top of the movable connecting frame. A movable bracket is slidably connected to the top of the movable guide groove. A movable cleaning rod is slidably connected to the top of the movable bracket. A cleaning plate bracket is provided at the bottom of the rotation control screw. One end of the cleaning plate bracket is fixedly connected to the end of the cleaning base near the fixed rod. A cleaning plate groove is fixedly connected to the end of the cleaning plate bracket away from the cleaning base. An arc-shaped working plate is fixedly connected to the end of the cleaning plate groove away from the base plate. A wavy groove is provided at the end of the arc-shaped working plate away from the cleaning plate groove. The cleaning plate groove is fixedly connected to the end of the cleaning plate bracket away from the cleaning base.

[0021] A method for processing cemented carbide cutting tools with PVD coating includes the following steps:

[0022] Step 1: First, install the carbide tool to be processed on the outside of the suspension rod. After installation, move the pressure plate to the bottom, press the connecting spring, and move the push plate to the bottom. This pushes the moving fixed push plate to both sides, and the moving fixed push plate moves outward to support the tool's hanging hole for fixation.

[0023] Step 2: After the installation in the previous step is completed, drive the lifting wheel motor to move the internal wheels, causing the lifting frame to descend and move the processing furnace at the bottom of the lifting frame, so that the processing furnace fits into the sealing groove, forming a sealed chamber inside the processing furnace.

[0024] Step 3: After forming a sealed chamber inside the processing furnace, first drive the fan motor to draw air into the processing furnace through the fan inlet. Then, create a vacuum inside the processing furnace through the vent to remove the waste gas and impurities inside the processing furnace, in preparation for PVD coating processing.

[0025] Step 4: After evacuating the inside of the processing furnace, use the heating elements inside the furnace to heat the inside of the furnace, raising the temperature inside the furnace and removing moisture and other impurities adhering to the cutting tools, work racks, and the inside of the processing furnace.

[0026] Step 5: Apply electricity to the discharge substrate. The high temperature generated by the arc discharge between the discharge substrate and the cutting tool causes the material of the discharge substrate to evaporate into plasma, ionizing the elements to be coated. Since the ionized metal substrate ions are all positive ions, they are output to the cutting tool through the connecting rod inside the work hanger, making the cutting tool negatively charged. This causes the ionized elements inside to impact the cutting tool, allowing the elements to deposit on the outside of the cutting tool, thereby forming a thin film and completing the PVD coating. During this process, the working motor drives the rotating base plate to rotate, making the coating of the cemented carbide cutting tool more comprehensive.

[0027] Step Six: After coating is completed in the previous step, remove the processed tool and place it on the top of the base bracket. Rotate the control screw to push the rotating push plate, which in turn moves the fixed rod and the movable connecting frame. During this process, the movable cleaning rod inside the fixed rod moves the wavy groove, causing the movable cleaning rod at the top of the movable bracket to spray air onto the tool at the bottom, thus achieving a thorough cleaning of the tool. Beneficial effects

[0028] The beneficial effects of this invention are:

[0029] 1. This invention, by adopting a built-in automatic fixing installation method, ensures the stability of the installed carbide tool during the actual coating and rotation process. The built-in rotation mechanism at the bottom allows the suspended carbide tool to move more comprehensively within the furnace, facilitating complete coating of the carbide tool body. Compared with the existing technology, this invention can maintain the stability of the tool during the PVD coating process of advanced non-ferrous metal materials while ensuring a more comprehensive coating.

[0030] 2. When using this invention, the wave-shaped groove can guide the moving cleaning rod to perform air-jet cleaning of the tool. The cleaning process completely eliminates contact between the tool and other mechanisms, preventing the tool from being contaminated before PVD coating and affecting the coating effect. It can also be cleaned to a certain extent after coating. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 is a schematic diagram of the base plate of the present invention;

[0034] Figure 3 is a schematic diagram of the working motor of the present invention;

[0035] Figure 4 is a schematic diagram of the lifting base plate of the present invention;

[0036] Figure 5 is a schematic diagram of the working bracket of the present invention;

[0037] Figure 6 is a schematic diagram of the internal structure of the sealing cover of the present invention;

[0038] Figure 7 is an enlarged view of point A in Figure 6;

[0039] Figure 8 is a schematic diagram of the power-carrying pole of the present invention;

[0040] Figure 9 is a schematic diagram of the vacuum blower of the present invention;

[0041] Figure 10 is a schematic diagram of the fan motor of the present invention;

[0042] Figure 11 is an enlarged view of point B in Figure 10.

[0043] In the diagram: 1. Base plate; 11. Bottom sliding groove; 12. Bottom bracket; 2. Working motor; 21. Fixed bracket; 22. Fixed nut; 23. Control motor; 24. Motor output rod; 25. Connecting fixed frame; 26. Connecting side rod; 27. Connecting hanging ring; 3. Lifting base plate; 31. Sealing groove; 32. Lifting connecting rod; 33. Lifting moving groove; 34. Lifting moving frame; 35. Lifting wheel motor; 36. Lifting hanging frame; 37. Connecting hanging rod; 38. Processing furnace; 381. Heating element; 382. Discharge substrate; 383. Vent; 39. Rotating base plate; 4. Working hanging frame; 41. Working hanging rod; 42. Suspension base plate; 43. Suspension rod; 44. Moving fixed push plate; 45. Connecting spring; 46. 47. Pressing plate; 48. Pushing tip plate; 49. Power rod; 410. Connecting ring; 411. Connecting bracket; 412. Insulating baffle; 5. Vacuum fan; 51. Fan inlet / outlet plate; 52. Fan inlet; 53. Fan outlet; 54. Fan connecting frame; 6. Fan motor; 61. Motor connecting plate; 62. Motor base; 63. Motor control board; 64. Motor output ring; 7. Cleaning base; 71. Rotary control screw; 72. Rotary push plate; 73. Fixed rod; 74. Movable connecting frame; 75. Movable guide groove; 76. Movable bracket; 77. Movable cleaning rod; 78. Cleaning plate bracket; 79. Cleaning plate groove; 710. Arc-shaped working plate; 711. Wavy groove. Embodiments of the present invention

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0045] A PVD coating processing device and method for cemented carbide cutting tools belongs to the advanced non-ferrous metal materials category in the new materials industry. Plasma spraying and thermal spraying are related, belonging to the coating type of metal materials in the chemical metallurgy category. It involves coating one metal material onto another metal material. Specifically, in this case, one metal material used for coating refers to the substrate used for coating, and the other metal material to be coated refers to the cemented carbide cutting tool. The coating in this case is carried out by ion implantation, and the surface of the cemented carbide cutting tool is coated by ion implantation.

[0046] As shown in Figure 1, the system includes a base plate 1, a working motor 2 fixedly connected to the top of the base plate 1, a lifting base plate 3 installed at the end of the working motor 2 away from the base plate 1, a working bracket 4 installed at the end of the lifting base plate 3 away from the working motor 2, a vacuum fan 5 fixedly installed at the top of the base plate 1, a fan motor 6 fixedly installed on the outside of the vacuum fan 5, and a cleaning base 7 fixedly installed at the top of the base plate 1.

[0047] The working motor 2 at the top of the base plate 1 drives the working bracket 4 to rotate, and the blower motor 6 drives the vacuum blower 5 to evacuate the inside of the lifting base plate 3 to assist in the PVD coating process.

[0048] As shown in Figure 2, the bottom sliding groove 11 and the bottom bracket 12 are fixedly connected to the top of the base plate 1, and the bottom bracket 12 is fixedly installed inside the bottom sliding groove 11.

[0049] As shown in Figure 3, fixed brackets 21 are rotatably connected to both sides of the end of the working motor 2 away from the base plate 1. A fixing nut 22 is threaded onto one end of the fixed bracket 2, passing through the top of the working motor 2. A control motor 23 is fixedly connected to the end of the working motor 2 away from the base plate 1. A motor output rod 24 is fixedly connected to the end of the control motor 23 away from the working motor 2. A connecting bracket 25 is fixedly installed on the end of the motor output rod 24 away from the control motor 23. Multiple connecting side rods 26 are arranged in an array on the end of the connecting bracket 25 away from the motor output rod 24. A common connecting ring 27 is fixedly connected to the end of the multiple connecting side rods 26 away from the connecting bracket 25. Multiple electrical through holes are provided at the bottom of the connecting ring 27 for controlling the internal voltage during the PVD coating process.

[0050] The control motor 23 at the top of the working motor 2 drives the connecting fixing frame 25 to rotate, thereby causing the connecting side rod 26 to rotate, which in turn drives the mechanism at the top to rotate. The fixing bracket 21 is used to work with the fixing nut 22 to support the lifting base plate 3 at the top.

[0051] As shown in Figures 4 and 5, a sealing groove 31 is fixedly connected to the end of the lifting base plate 3 away from the base plate 1. A lifting connecting rod 32 is provided on the outside of the sealing groove 31. The lifting connecting rod 32 is fixedly connected to the outside of the top of the lifting base plate 3. A lifting moving groove 33 is opened on the inside of the lifting connecting rod 32. A lifting moving frame 34 is slidably connected to the inside of the lifting moving groove 33. Multiple lifting wheel motors 35 are fixedly connected to the inside of the lifting moving frame 34. A lifting hanging frame 36 is fixedly connected to the end of the lifting moving frame 34 away from the lifting base plate 3. A connecting hanging rod 37 is fixedly connected to the end of the lifting hanging frame 36 away from the lifting connecting rod 32. A processing furnace 38 is fixedly connected to the end of the connecting hanging rod 37 near the lifting base plate 3. A rotating base plate 39 is rotatably connected to the top of the lifting base plate 3. The bottom end of the rotating base plate 39 is fixedly connected to the top of the connecting hanging ring 27.

[0052] Heating elements 381 and a discharge substrate 382 are fixedly connected to the inner sidewall of the processing furnace 38, and a vent 383 is fixedly connected to the bottom inner side of the processing furnace 38. A connection port for controlling the voltage of the discharge substrate 382 during the PVD coating process is provided on the outer side of the processing furnace 38 at the position corresponding to the discharge substrate 382, ​​which can directly control the voltage of the discharge substrate 382.

[0053] The sealing groove 31 at the top of the lifting base plate 3 works in conjunction with the processing furnace 38, creating a sealed space inside the processing furnace 38 that is isolated from the outside world, facilitating the processing of PVD coating. The lifting moving groove 33 inside the lifting connecting rod 32 works in conjunction with the lifting moving frame 34, using the lifting wheel motor 35 to drive the wheel for lifting, allowing the lifting bracket 36 to drive the processing furnace 38 at the top to rise and fall via the connecting rod 37.

[0054] Heating element 381 is used to control the temperature inside the processing furnace 38, which facilitates temperature control for PVD. Vent 383 is used to work with the vacuum fan 5 on the outside to draw air and create a vacuum inside the processing furnace 38.

[0055] As shown in Figures 6, 7 and 8, the working bracket 4 is a hexagonal frustum, and each side wall is fixedly connected to a working hanging rod 41. The end of each working hanging rod 41 away from the working bracket 4 is fixedly connected to a suspension base plate 42. The end of the suspension base plate 42 away from the working hanging rod 41 is fixedly connected to a suspension rod 43. A movable fixed push plate 44 is slidably connected to the inside of the suspension rod 43. A connecting spring 45 is fixedly connected to the inside of the suspension rod 43. A pressure plate 46 is fixedly connected to the end of the connecting spring 45 away from the suspension rod 43.

[0056] A pusher plate 47 is fixedly connected to the bottom end of the pressure plate 46. The pusher plate 47 is slidably installed on the top end of the movable fixed push plate 44. An energizing rod 48 is slidably connected to the inner side of the working hanging rod 41. A connecting ring 49 is fixedly connected to the end of the energizing rod 48 away from the suspension rod 43. A connecting bracket 410 is fixedly connected to the inner side of the connecting ring 49. An insulating baffle 411 is installed on the outer side of the connecting bracket 410. The top end of the insulating baffle 411 is fixedly connected to the inner wall of the working hanging frame 4. A connecting inner rod 412 is fixedly connected to the bottom end of the connecting bracket 410. The connecting inner rod 412 is fixedly installed inside the insulating baffle 411.

[0057] The tool to be processed is supported by the suspension rod 43 at the front end of the work hanger 4. The tool outside the suspension rod 43 presses the pressure plate 46 under the action of gravity, which causes the pressure plate 46 to drive the push plate 47 to press down, and the movable fixed push plate 44 to move to both sides, so as to fix the tool to be processed in conjunction with the pressure plate 46, which facilitates PVD coating processing.

[0058] The energizing rod 48 is used to output voltage to the tool through the movable fixed push plate 44 and the pressure plate 46, so that the tool is energized. The connecting rod 412 outputs voltage to the energizing rod 48 through the connecting bracket 410 and the connecting ring 49, which facilitates the control of the tool voltage and realizes the voltage control inside the tool.

[0059] As shown in Figure 9, a blower inlet / outlet plate 51 is fixedly connected to the end of the vacuum blower 5 away from the base plate 1. The top of the blower inlet / outlet plate 51 has a blower inlet 52 and a blower outlet 53. A blower connecting frame 54 is fixedly connected to the output end of the vacuum blower 5.

[0060] Air pressure is output into the processing furnace 38 through the blower inlet 52 at the top of the vacuum blower 5, so that the gas inside the processing furnace 38 is discharged and a vacuum is formed inside the processing furnace 38.

[0061] As shown in Figure 10, a motor connecting plate 61 is fixedly connected to the end of the fan motor 6 away from the base plate 1, a motor base 62 is fixedly connected to the end of the fan motor 6 near the base plate 1, a motor control plate 63 is fixedly connected to the end of the motor connecting plate 61 away from the fan motor 6, and a motor output ring 64 is fixedly connected to the end of the fan motor 6 near the vacuum blower 5.

[0062] The vacuum fan 5 is driven by the fan motor 6, which allows the vacuum fan 5 to draw air through the fan inlet 52 and output it to the fan outlet 53.

[0063] As shown in Figure 11, a rotary control screw 71 is threadedly connected to the inner side of the cleaning base 7. A rotary push plate 72 is rotatably connected to the end of the rotary control screw 71 away from the cleaning base 7. A fixed rod 73 is fixedly connected to the end of the rotary push plate 72 away from the cleaning base 7. A movable connecting frame 74 is fixedly connected to the end of the fixed rod 73 away from the rotary push plate 72. A movable guide groove 75 is opened at the top of the movable connecting frame 74. A movable bracket 76 is slidably connected to the top of the movable guide groove 75. A movable cleaning... The cleaning rod 77 has a cleaning plate bracket 78 at its bottom end, with one end of the cleaning plate bracket 78 fixedly connected to the end of the cleaning base 7 near the fixed rod 73. The end of the cleaning plate bracket 78 away from the cleaning base 7 is fixedly connected to a cleaning plate groove 79. The end of the cleaning plate groove 79 away from the base plate 1 is fixedly connected to an arc-shaped working plate 710. The end of the arc-shaped working plate 710 away from the cleaning plate groove 79 has a wavy groove 711. The cleaning plate groove 79 is fixedly connected to the end of the cleaning plate bracket 78 away from the cleaning base 7. The end of the rotating control screw 71 near the rotating push plate 72 is nested inside the rotating push plate 72. Moving the rotating control screw 71 back and forth moves the rotating push plate 72.

[0064] By introducing gas into the outside of the movable cleaning rod 77, the movable cleaning rod 77 can output to the bottom end to clean the tool that has been processed at the bottom end. During the cleaning process, the rotation control screw 71 is used to rotate and push the rotating push plate 72 to move, which drives the position of the movable connecting frame 74 to move. During the movement of the movable connecting frame 74, the movable cleaning rod 77 is moved. The movable cleaning rod 77 is affected by the wavy groove 711 and moves inside the wavy groove 711, thereby realizing that the movable cleaning rod 77 can clean various positions on the top of the tool that needs to be cleaned.

[0065] The coating material used is titanium. Coating carbide tools with titanium metal can protect the internal carbide tools from wear and improve their appearance.

[0066] A method for processing cemented carbide cutting tools with PVD coating includes the following steps:

[0067] Step 1: First, install the carbide tool to be processed on the outside of the suspension rod 43. After installation, the pressure plate 46 moves to the bottom, pressing the connecting spring 45. This causes the push plate 47 to move to the bottom, pushing the movable fixed push plate 44 to both sides. The movable fixed push plate 44 moves outward, supporting the tool's hanging hole for fixation.

[0068] Step 2: After the installation in the previous step is completed, drive the lifting wheel motor 35 to drive the internal wheels to move, so that the lifting moving frame 34 descends and drives the processing furnace 38 at the bottom of the lifting bracket 36, so that the processing furnace 38 is fitted into the sealing groove 31, so that a sealed chamber is formed inside the processing furnace 38.

[0069] Step 3: After forming a sealed chamber inside the processing furnace 38, first drive the fan motor 6 to draw air into the processing furnace 38 through the fan inlet 52, and then draw a vacuum inside the processing furnace 38 through the vent 383 to remove the waste gas and impurities inside the processing furnace 38, in preparation for PVD coating processing.

[0070] Step 4: After vacuuming inside the processing furnace 38, the heating element 381 inside the processing furnace 38 is used to heat the inside of the processing furnace 38, so that the temperature inside the processing furnace 38 rises and removes moisture and other impurities adhering to the cutting tool, work hanger 4 and the inside of the processing furnace 38.

[0071] Step 5: Power is applied to the discharge substrate 382. The high temperature generated by the arc discharge between the discharge substrate 382 and the tool causes the material of the discharge substrate 382 to evaporate into plasma, ionizing the elements to be coated. Since the ionized metal substrate ions are all positive ions, they are output to the tool through the connecting inner rod 412 inside the work hanger 4, making the tool negatively charged. This causes the ionized elements inside to impact the tool, allowing the elements to deposit on the outside of the tool, thereby forming a thin film and completing the PVD coating. During this process, the working motor 2 drives the rotating base plate 39 to rotate, making the coating of the cemented carbide tool more comprehensive.

[0072] Step Six: After coating is completed in the previous step, remove the processed tool and place it on the top of the base bracket 12. Rotate the rotation control screw 71 to push the rotation push plate 72 to move, and the fixed rod 73 to drive the movable connecting frame 74 to move. During this process, the movable cleaning rod 77 inside the fixed rod 73 drives the wave-shaped groove 711 to move, so that the movable cleaning rod 77 at the top of the movable bracket 76 sprays air onto the tool at the bottom, achieving a thorough cleaning of the tool.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A PVD coating processing device for cemented carbide cutting tools, comprising a base plate (1), characterized in that, The top of the base plate (1) is fixedly connected to a working motor (2) for rotation drive; The working motor (2) is rotatably connected to fixed brackets (21) on both sides of the end away from the base plate (1). The fixed brackets (21) are threaded to a fixed nut (22) at the top end of the working motor (2). The working motor (2) is fixedly connected to a control motor (23) at the end away from the base plate (1). The working motor (2) is equipped with a lifting base plate (3) at one end away from the base plate (1), and a working bracket (4) for installing the carbide cutting tool to be processed is installed at the other end of the lifting base plate (3) away from the working motor (2). The working bracket (4) is a hexagonal frustum, and each side wall is fixedly connected to a working hanging rod (41). The end of each working hanging rod (41) away from the working bracket (4) is fixedly connected to a hanging base plate (42). The base plate (1) is fixedly installed with a vacuum fan (5) for auxiliary vacuuming, and a fan motor (6) for controlling the vacuum fan (5) is fixedly installed on the outside of the vacuum fan (5). A cleaning base (7) is fixedly installed on the top of the base plate (1).

2. The PVD coating processing device for cemented carbide cutting tools according to claim 1, characterized in that, The bottom sliding groove (11) and the bottom bracket (12) are fixedly connected to the top of the base plate (1), and the bottom bracket (12) is fixedly installed inside the bottom sliding groove (11).

3. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 1, characterized in that, The control motor (23) is fixedly connected to a motor output rod (24) at one end away from the working motor (2). A connecting bracket (25) is fixedly installed at one end of the motor output rod (24) away from the control motor (23). Multiple connecting side rods (26) are arranged in an array at one end of the connecting bracket (25) away from the motor output rod (24). The same connecting ring (27) is fixedly connected at one end of the multiple connecting side rods (26) away from the connecting bracket (25).

4. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 3, characterized in that, The lifting base plate (3) is fixedly connected to a sealing groove (31) at one end away from the base plate (1). A lifting connecting rod (32) is provided on the outside of the sealing groove (31). The lifting connecting rod (32) is fixedly connected to the outside of the top of the lifting base plate (3). A lifting moving groove (33) is opened on the inside of the lifting connecting rod (32). A lifting moving frame (34) is slidably connected on the inside of the lifting moving groove (33). Multiple lifting wheel motors (35) are fixedly connected on the inside of the lifting moving frame (34). A lifting hanging frame (36) is fixedly connected on one end of the lifting moving frame (34) away from the lifting base plate (3). A connecting hanging rod (37) is fixedly connected on one end of the lifting hanging frame (36) away from the lifting connecting rod (32). A processing furnace (38) is fixedly connected on one end of the connecting hanging rod (37) close to the lifting base plate (3). A rotating base plate (39) is rotatably connected to the top of the lifting base plate (3). The bottom end of the rotating base plate (39) is fixedly connected to the top of the connecting hanging ring (27). Heating element (381) and discharge substrate (382) are fixedly connected to the inner side wall of the processing furnace (38), and air vent (383) is fixedly connected to the bottom of the inner side of the processing furnace (38).

5. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 1, characterized in that, The suspension base plate (42) is fixedly connected to a suspension rod (43) at one end away from the working hanging rod (41). A movable fixed push plate (44) is slidably connected to the inner side of the suspension rod (43). A connecting spring (45) is fixedly connected to the inner side of the suspension rod (43). A pressure plate (46) is fixedly connected to the end of the connecting spring (45) away from the suspension rod (43).

6. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 5, characterized in that, The bottom end of the pressing plate (46) is fixedly connected to a pushing tip plate (47), which is slidably installed on the top of the movable fixed push plate (44). The inner side of the working hanging rod (41) is slidably connected to an electric rod (48). The end of the electric rod (48) away from the suspension rod (43) is fixedly connected to a connecting ring (49). The inner side of the connecting ring (49) is fixedly connected to a connecting bracket (410). An insulating baffle (411) is installed on the outer side of the connecting bracket (410). The top end of the insulating baffle (411) is fixedly connected to the inner wall of the working hanging frame (4). The bottom end of the connecting bracket (410) is fixedly connected to a connecting inner rod (412), which is fixedly installed on the inner side of the insulating baffle (411).

7. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 1, characterized in that, The vacuum blower (5) is fixedly connected to a blower inlet / outlet plate (51) at one end away from the base plate (1). The blower inlet / outlet plate (51) has a blower inlet (52) and a blower outlet (53) at the top. The output end of the vacuum blower (5) is fixedly connected to a blower connecting frame (54).

8. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 1, characterized in that, The fan motor (6) is fixedly connected to a motor connecting plate (61) at the end away from the base plate (1), and a motor base (62) is fixedly connected to the end of the fan motor (6) near the base plate (1). A motor control plate (63) is fixedly connected to the end of the motor connecting plate (61) away from the fan motor (6), and a motor output ring (64) is fixedly connected to the end of the fan motor (6) near the vacuum fan (5).

9. The PVD coating processing apparatus for cemented carbide cutting tools according to claim 1, characterized in that, The cleaning base (7) is threaded with a rotary control screw (71) on its inner side. A rotary push plate (72) is rotatably connected to the end of the rotary control screw (71) away from the cleaning base (7). A fixed rod (73) is fixedly connected to the end of the rotary push plate (72) away from the cleaning base (7). A movable connecting frame (74) is fixedly connected to the end of the fixed rod (73) away from the rotary push plate (72). A movable guide groove (75) is provided at the top of the movable connecting frame (74). A movable bracket (76) is slidably connected to the top of the movable guide groove (75). A movable cleaning rod (77) is slidably connected to the top of the movable bracket (76). A cleaning plate bracket (78) is provided at the bottom of the rotary control screw (71). One end of the cleaning plate bracket (78) is fixedly connected to the end of the cleaning base (7) near the fixed rod (73). A cleaning plate groove (79) is fixedly connected to the end of the cleaning plate bracket (78) away from the cleaning base (7). An arc-shaped working plate (710) is fixedly connected to the end of the cleaning plate groove (79) away from the base plate (1). A wave-shaped groove (711) is opened at the end of the arc-shaped working plate (710) away from the cleaning plate groove (79). The cleaning plate groove (79) is fixedly connected to the end of the cleaning plate bracket (78) away from the cleaning base (7).

10. A method for processing PVD coating on cemented carbide cutting tools, performed by a PVD coating processing apparatus for cemented carbide cutting tools as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: First, install the carbide tool to be processed on the outside of the suspension rod (43), and let the pressure plate (46) move to the bottom after installation. Let the pressure plate (46) press the connecting spring (45) to the bottom, let the push tip plate (47) move to the bottom, push the moving fixed push plate (44) to both sides, and move the moving fixed push plate (44) to the outside to support the tool's hanging hole for fixing. Step 2: After the installation in the previous step is completed, drive the lifting wheel motor (35) to drive the internal wheels to move, so that the lifting moving frame (34) descends and drives the processing furnace (38) at the bottom of the lifting bracket (36) to fit into the sealing groove (31), so that a sealed chamber is formed inside the processing furnace (38). Step 3: After forming a sealed chamber inside the processing furnace (38), first drive the fan motor (6) to draw air into the processing furnace (38) through the fan inlet (52), and draw a vacuum inside the processing furnace (38) through the vent (383) to remove the waste gas and impurities inside the processing furnace (38) in preparation for PVD coating processing. Step 4: After vacuuming inside the processing furnace (38), the heating element (381) inside the processing furnace (38) is used to heat the inside of the processing furnace (38) to raise the temperature inside the processing furnace (38) and remove moisture and other impurities adhering to the cutting tool, work hanger (4) and the inside of the processing furnace (38). Step 5: Power is applied to the discharge substrate (382). The high temperature generated by the arc discharge between the discharge substrate (382) and the tool causes the material of the discharge substrate (382) to evaporate into plasma, ionizing the elements to be coated. Since the ionized metal substrate ions are all positive ions, they are output to the tool through the connecting rod (412) inside the work hanger (4), making the tool negatively charged. This causes the ionized elements inside to impact the tool, allowing the elements to deposit on the outside of the tool, thereby forming a thin film and completing the PVD coating. During this process, the working motor (2) drives the rotating base plate (39) to rotate, making the coating of the cemented carbide tool more comprehensive. Step 6: After the coating is completed in the previous step, remove the processed tool and place it on the top of the bottom bracket (12). Rotate the control screw (71) to push the rotating push plate (72) to move. The fixed rod (73) drives the movable connecting frame (74) to move. The movable cleaning rod (77) inside the fixed rod (73) drives the wave groove (711) to move during the process, so that the movable cleaning rod (77) at the top of the movable bracket (76) sprays air onto the tool at the bottom to achieve a thorough cleaning of the tool.

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