Nickel-titanium alloy polishing device

Abstract

The invention discloses a nickel-titanium alloy polishing device, and belongs to the technical field of chemical polishing, the polishing device comprises an electrolytic bath, a cathode bar fixedly arranged in the electrolytic bath, an anode cross bar erected at an opening position of the electrolytic bath, and a placing rack arranged on the anode cross bar and used for placing nickel-titanium alloy; the polishing device further comprises a cover plate hinged to one side of the opening of the electrolytic cell and used for sealing, an air extracting mechanism arranged on the cover plate and used for extracting air in the electrolytic cell, and a collecting bag communicated with the air extracting mechanism and used for collecting the air. According to the nickel-titanium alloy polishing device, by arranging the cover plate, the air exhaust mechanism and the collecting bag, gas generated in the electrolytic bath can be extracted and collected and cannot be directly discharged into the environment, so that the working environment is improved, and the safety of operators is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of chemical polishing, and in particular to a nickel-titanium alloy polishing device. Background Art

[0002] As a unique metal alloy, nickel-titanium alloy has the characteristics of shape memory, superelasticity, good mechanical properties, friction resistance, corrosion resistance and excellent biocompatibility. These characteristics make nickel-titanium alloy widely used in medicine, aerospace, automotive industry and other fields.

[0003] Traditional nickel-titanium alloy polishing is often done by directly placing the nickel-titanium alloy in an open electrolytic cell for processing. However, since the existing electrolytic cell is directly exposed to the air, impurity gases such as oxygen and carbon dioxide in the air can easily react with the electrolyte, which not only affects the stability of the electrolyte and the polishing effect, but also introduces unnecessary impurities and reduces product quality. Secondly, if the reaction gases such as hydrogen generated during the electrolysis process are directly discharged into the external environment, it will not only cause environmental pollution, but may also cause harm to the health of the operators.

[0004] Therefore, the present application provides a nickel-titanium alloy polishing device to solve the above problems. Summary of the invention

[0005] The present application provides a nickel-titanium alloy polishing device, which aims to solve the problems raised in the background technology that the existing nickel-titanium alloy polishing device is caused by the electrolytic cell being directly exposed to the air, resulting in impurity gases affecting the stability of the electrolyte and the product quality, and the harmful gases generated by electrolysis are directly discharged, which not only pollutes the environment but also endangers the health of operators.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a nickel-titanium alloy polishing device, comprising an electrolytic cell, a cathode rod fixedly arranged in the electrolytic cell, an anode cross bar mounted at the opening position of the electrolytic cell, and a placement rack arranged on the anode cross bar for placing nickel-titanium alloy; The polishing device also includes a cover plate hinged on one side of the opening of the electrolytic cell for sealing, a gas extraction mechanism disposed on the cover plate for extracting gas from the electrolytic cell, and a collection bag connected to the gas extraction mechanism for gas collection; The air extraction mechanism includes a fixed cylinder that longitudinally penetrates the cover plate and is fixedly connected to the cover plate, an air inlet pipe fixedly arranged at the bottom end of the fixed cylinder, a piston that moves longitudinally in the fixed cylinder, an air outlet pipe fixedly arranged at one side of the fixed cylinder and connected to the collecting bag, a driving component arranged on the cover plate for driving the piston to move, and a transmission component arranged on the cover plate for transmitting the driving force of the driving component to the placement rack to rotate the nickel-titanium alloy; the combined design of the cover plate, the air extraction mechanism and the collecting bag enables the gas generated in the electrolytic cell to be extracted and collected, and will not be directly discharged into the environment, thereby improving the working environment and The safety of the operator is ensured. At the same time, by using the piston to move up and down to extract the gas, the accumulation and disturbance of the gas in the electrolyte can be significantly reduced, which helps to maintain the stability of the electrolyte and reduce the adverse effects of gas disturbance on the electrolytic reaction. The design of the cover plate can prevent other impurities from entering the electrolytic cell during the electrolysis process, and the design of the transmission component allows the nickel-titanium alloy in the electrolysis process to rotate synchronously while the gas is being extracted. This rotational motion increases the contact area and relative movement speed between the electrolyte and the surface of the nickel-titanium alloy, which is conducive to faster separation of the polishing product from the workpiece surface, thereby improving the polishing efficiency and effect.

[0007] Preferably, in order to facilitate the reciprocating movement of the piston and the extraction of gas, the driving assembly includes a fixing plate fixedly arranged on the cover plate corresponding to a side of the fixing cylinder, a mounting box fixedly arranged on the fixing plate close to the fixing cylinder, a connecting shaft which transversely penetrates the fixing plate and the mounting box in sequence and is rotatably connected to the fixing plate and the mounting box, a motor fixedly arranged on the fixing plate for driving the connecting shaft to rotate, a rotating wheel fixedly arranged on the connecting shaft away from an end of the motor and located outside the mounting box, an eccentric connecting rod rotatably connected to the rotating wheel and located above the fixing cylinder, and a push rod which moves longitudinally on the fixing cylinder and is rotatably connected to the bottom end of the eccentric connecting rod, the bottom end of the push rod being fixedly connected to the top end of the piston; this design enables the piston to stably reciprocate up and down in the fixing cylinder, so that the gas generated in the electrolytic cell can easily enter the fixing cylinder from the air inlet pipe and then be discharged directly from the air outlet pipe to the collecting bag for collection.

[0008] Preferably, in order to facilitate opening and closing of the cover, a handle groove is provided on the fixing plate; the design of the handle groove provides an explicit gripping point for the operator, so that when the cover needs to be opened or closed, the operator only needs to easily hold the handle groove and apply force.

[0009] Preferably, in order to facilitate the rotation of the nickel-titanium alloy in the placement rack while pumping air, the transmission assembly includes a driving bevel gear rotatably arranged in the installation box and fixedly sleeved with the connecting shaft, a connecting bevel gear rotatably arranged in the installation box and meshing with the driving bevel gear, a rotating rod longitudinally penetrating the cover plate and fixedly connected to the connecting bevel gear, and a special-shaped plug block arranged at the bottom end of the rotating rod and connected to the placement rack, and the rotating rod is rotatably connected to the cover plate; such a design allows the power of the motor to be effectively transmitted to the placement rack to ensure that the nickel-titanium alloy can be synchronously driven to rotate while pumping air, thereby improving the efficiency of the entire polishing process.

[0010] Preferably, in order to facilitate the connection between the transmission assembly and the placement rack, the placement rack includes a hook hooked on the anode cross bar, a ring block fixedly connected to the hook and located below the rotating rod, a mesh tube rotatably connected to the ring block, and a special-shaped socket opened at the top of the mesh tube and matched with the special-shaped plug block; through the matching design of the special-shaped plug block and the special-shaped socket at the top of the mesh tube, a stable connection between the rotating rod and the mesh tube can be achieved after closing the cover plate, and when the cover plate is opened again, the connection between the rotating rod and the mesh tube can be easily released.

[0011] Preferably, in order to facilitate the accurate insertion of the special-shaped plug into the special-shaped socket after the cover is closed, an electric telescopic rod is fixedly provided at the bottom end of the rotating rod and is fixedly connected to the special-shaped plug for lifting the special-shaped plug; the design of the electric telescopic rod can make the special-shaped plug automatically descend and accurately insert into the special-shaped socket after the cover is closed, which greatly simplifies the operation process. At the same time, before opening the cover, the special-shaped plug can automatically detach from the special-shaped socket.

[0012] Preferably, in order to facilitate the accurate placement of the placement rack and not affect the use of the vacuum mechanism, symmetrical limit blocks are fixedly arranged on the anode cross bar, and the hook is located between the two limit blocks; the limit block provides a clear positioning point for the hook, so that the operator can quickly and accurately find its predetermined position every time when hanging the placement rack.

[0013] Preferably, in order to ensure that the electrolyte can penetrate smoothly into the mesh tube, the mesh tube is provided with through grooves distributed in a ring array; the design of the through grooves enables the electrolyte to more easily penetrate into every corner of the mesh tube and fully contact the surface of the nickel-titanium alloy.

[0014] The nickel-titanium alloy polishing device is provided with a cover plate, an exhaust mechanism and a collection bag, so that the gas generated in the electrolytic cell can be extracted and collected, and will not be directly discharged into the environment, thereby improving the working environment and ensuring the safety of the operator; The nickel-titanium alloy polishing device can significantly reduce the accumulation and disturbance of gas in the electrolyte by using the piston to move up and down to extract gas, which helps to maintain the stable state of the electrolyte and reduce the adverse effects of gas disturbance on the electrolytic reaction. At the same time, the design of the cover plate can prevent other impurities from entering the electrolytic cell during the electrolysis process. The nickel-titanium alloy polishing device is provided with a transmission component so that the piston can synchronously rotate the nickel-titanium alloy in the electrolysis process while pumping air. This rotational motion increases the contact area and relative movement speed between the electrolyte and the surface of the nickel-titanium alloy, which is conducive to faster separation of the polishing product from the workpiece surface, thereby improving the polishing efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a nickel-titanium alloy polishing device; Figure 2 It is a structural schematic diagram of a nickel-titanium alloy polishing device with a cover plate in an open state; Figure 3 is a cross-sectional view of a nickel-titanium alloy polishing device; Figure 4 It is a structural schematic diagram of a placement rack in a nickel-titanium alloy polishing device; Figure 5 A schematic diagram of the structure of the vacuum mechanism in a nickel-titanium alloy polishing device Figure 1 ; Figure 6 A schematic diagram of the structure of the vacuum mechanism in a nickel-titanium alloy polishing device Figure 2 .

[0016] In the figure: 1. Electrolyzer; 2. Cathode rod; 3. Anode cross bar; 31. Limit block; 4. Placement rack; 41. Hook; 42. Ring block; 43. Mesh tube; 431. Through slot; 44. Special-shaped socket; 5. Cover plate; 6. Air extraction mechanism; 61. Fixed cylinder; 62. Air inlet pipe; 63. Piston; 64. Air outlet pipe; 65. Driving assembly; 651. Fixed plate; 6511. Handle slot; 652. Mounting box; 653. Connecting shaft; 654. Motor; 655. Rotating wheel; 656. Eccentric connecting rod; 657. Push rod; 66. Transmission assembly; 661. Driving bevel gear; 662. Connecting bevel gear; 663. Rotating rod; 6631. Electric telescopic rod; 664. Special-shaped plug; 7. Collection bag. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] This embodiment provides a nickel-titanium alloy polishing device, such as Figure 1-Figure 6 As shown, the polishing device includes an electrolytic cell 1, a cathode rod 2 fixedly arranged in the electrolytic cell 1, an anode cross bar 3 mounted at the opening position of the electrolytic cell 1, and a placement rack 4 arranged on the anode cross bar 3 for placing nickel-titanium alloy; the polishing device also includes a cover plate 5 hinged on one side of the opening of the electrolytic cell 1 for sealing, a suction mechanism 6 arranged on the cover plate 5 for extracting gas in the electrolytic cell 1, and a collection bag 7 connected to the suction mechanism 6 for gas collection; the suction mechanism 6 includes a fixed cylinder 61 longitudinally penetrating the cover plate 5 and fixedly connected to the cover plate 5, an air inlet pipe 62 fixedly arranged at the bottom end of the fixed cylinder 61, a piston 63 longitudinally moving in the fixed cylinder 61, an air outlet pipe 64 fixedly arranged on one side of the fixed cylinder 61 and connected to the collection bag 7, a driving component 65 arranged on the cover plate 5 for driving the piston 63 to move, and a transmission component 66 arranged on the cover plate 5 for transmitting the driving force of the driving component 65 to the placement rack 4 to rotate the nickel-titanium alloy.

[0019] It should be additionally explained that both the air inlet pipe 62 and the air outlet pipe 64 are provided with a one-way valve to prevent the gas from flowing back.

[0020] When in use, first add electrolyte to the electrolytic cell 1, then place the nickel-titanium alloy to be polished in the placement rack 4, and hook it on the anode crossbar 3 through the placement rack 4 and place it in the electrolyte. Then, cover the cover plate 5 and apply a DC voltage to form an electric field between the cathode rod 2 and the nickel-titanium alloy placed in the placement rack 4. Then, the ions in the electrolyte migrate under the action of the electric field and undergo redox reactions on the anode and cathode. At this time, the surface of the nickel-titanium alloy will gradually remove the surface oxide layer, burrs and uneven parts under the action of the anode reaction to achieve a polishing effect. However, during the polishing process, During the process, the driving component 65 can be started to drive the piston 63 to move reciprocatingly longitudinally in the fixed cylinder 61. As the piston 63 moves longitudinally, the gas generated by electrolysis in the electrolytic cell 1 will be sucked into the fixed cylinder 61 through the air inlet pipe 62, and compressed and discharged through the air outlet pipe 64 to be collected in 7, so as to reduce the direct discharge of gas into the environment. At the same time, due to the transmission action of the transmission component 66, the driving force of the driving component 65 can drive the nickel-titanium alloy in the placement rack 4 to rotate, and the rotating nickel-titanium alloy can more evenly accept the polishing action of the electrolyte, so as to improve the polishing quality and efficiency.

[0021] Specifically, the driving assembly 65 includes a fixing plate 651 fixedly arranged on the cover plate 5 at one side corresponding to the fixing cylinder 61, a mounting box 652 fixedly arranged on the fixing plate 651 at one side close to the fixing cylinder 61, a connecting shaft 653 which transversely penetrates the fixing plate 651 and the mounting box 652 in sequence and is rotatably connected to the fixing plate 651 and the mounting box 652, a motor 654 fixedly arranged on the fixing plate 651 for driving the connecting shaft 653 to rotate, a rotating wheel 655 fixedly arranged at one end of the connecting shaft 653 away from the motor 654 and located outside the mounting box 652, an eccentric connecting rod 656 rotatably connected to the rotating wheel 655 and located above the fixing cylinder 61, and a push rod 657 which moves longitudinally on the fixing cylinder 61 and is rotatably connected to the bottom end of the eccentric connecting rod 656, the bottom end of the push rod 657 being fixedly connected to the top end of the piston 63; When the nickel-titanium alloy is electropolished in the electrolytic cell 1, the motor 654 can be started to drive the connecting shaft 653 to rotate. Since the connecting shaft 653 is fixedly connected to the rotating wheel 655, the rotating wheel 655 can rotate synchronously with the rotation of the connecting shaft 653. Since the rotating wheel 655 is rotatably connected to the eccentric connecting rod 656, and the eccentric connecting rod 656 is rotatably connected to the push rod 657, and the push rod 657 slides on the fixed cylinder 61, therefore, with the rotation of the rotating wheel 655, the eccentric connecting rod 656 can make the push rod 657 move longitudinally on the fixed cylinder 61, and the bottom end of the push rod 657 is fixedly connected to the top end of the piston 63. Therefore, the longitudinal movement of the push rod 657 will directly push the piston 63 to move longitudinally back and forth in the fixed cylinder 61, and then through the longitudinal reciprocating movement of the piston 63, the gas generated in the electrolytic cell 1 can be drawn into the fixed cylinder 61 from the air inlet pipe 62, and then discharged into the collection bag 7 through the air outlet pipe 64.

[0022] Further, the transmission assembly 66 includes a driving bevel gear 661 rotatably arranged in the installation box 652 and fixedly sleeved with the connecting shaft 653, a connecting bevel gear 662 rotatably arranged in the installation box 652 and meshing with the driving bevel gear 661, a rotating rod 663 longitudinally penetrating the cover plate 5 and fixedly connected to the connecting bevel gear 662, and a special-shaped plug block 664 arranged at the bottom end of the rotating rod 663 and connected to the placement frame 4, and the rotating rod 663 is rotatably connected to the cover plate 5; When the motor 654 drives the connecting shaft 653 to rotate, since the driving bevel gear 661 is fixedly sleeved with the connecting shaft 653 and the driving bevel gear 661 is meshed with the connecting bevel gear 662, the driving bevel gear 661 and the connecting bevel gear 662 can rotate synchronously with the rotation of the connecting shaft 653. Since the connecting bevel gear 662 is fixedly connected to the rotating rod 663 and the special-shaped plug 664 arranged at the bottom end of the rotating rod 663 is connected to the placement rack 4, when the connecting bevel gear 662 rotates, the placement rack 4 will also rotate synchronously, so that the nickel-titanium alloy placed in the placement rack 4 can rotate during the electrolysis process to fully contact the electrolyte in the electrolytic cell 1.

[0023] Furthermore, the placement rack 4 includes a hook 41 hooked on the anode cross bar 3, a ring block 42 fixedly connected to the hook 41 and located below the rotating rod 663, a mesh tube 43 rotatably connected to the ring block 42, and a special-shaped socket 44 opened at the top of the mesh tube 43 and adapted to the special-shaped plug block 664.

[0024] It should be noted that the special-shaped plug 664 is an insulator and allows current to flow to the transmission component 66 .

[0025] Since a special-shaped socket 44 matching the special-shaped plug block 664 is opened at the top of the mesh tube 43, and the mesh tube 43 is rotatably connected to the ring block 42, the mesh tube 43 can be connected to the rotating rod 663 by plugging the special-shaped plug block 664 into the special-shaped socket 44. When the rotating rod 663 rotates with the rotation of the connecting bevel gear 662, the mesh tube 43 can also rotate synchronously, and the placement rack 4 can be easily hooked on the anode cross bar 3 for use or removed from the anode cross bar 3 through the provided hook 41.

[0026] Furthermore, an electric telescopic rod 6631 is fixedly provided at the bottom end of the rotating rod 663 and is fixedly connected to the special-shaped plug block 664 for lifting and lowering the special-shaped plug block 664; When the nickel-titanium alloy to be polished is placed in the electrolyte in the electrolytic cell 1 and covered with the cover plate 5, the special-shaped plug block 664 can be pushed down by starting the electric telescopic rod 6631 and inserted into the special-shaped socket 44 set at the top of the mesh tube 43, so as to realize the connection between the special-shaped plug block 664 and the special-shaped socket 44, so that the transmission component 66 can be connected to the placement rack 4 for subsequent use. At the same time, after the electrolytic polishing is completed, the electric telescopic rod 6631 can be started to push the special-shaped plug block 664 up. At this time, the special-shaped plug block 664 will be pulled out of the special-shaped socket 44, and the direct connection between the transmission component 66 and the placement rack 4 will be in contact, and then the connection between the placement rack 4 and the anode cross bar 3 can be operated.

[0027] Among them, in order to facilitate the accurate placement of the placement rack 4 without affecting the use of the exhaust mechanism 6, symmetrical limit blocks 31 are fixedly arranged on the anode cross bar 3, and the hook 41 is located between the two limit blocks 31; the limit block 31 provides a clear positioning point for the hook 41, so that the operator can quickly and accurately find its predetermined position every time when hanging the placement rack 4.

[0028] In addition, in order to ensure that the electrolyte can penetrate smoothly into the mesh tube 43, the mesh tube 43 is provided with through grooves 431 distributed in a circular array; the design of the through grooves 431 allows the electrolyte to more easily penetrate into every corner of the mesh tube 43 and fully contact the surface of the nickel-titanium alloy.

[0029] Furthermore, in order to facilitate the opening and closing of the cover 5, a handle groove 6511 is provided on the fixing plate 651; the design of the handle groove 6511 provides an explicit gripping point for the operator, so that when the cover 5 needs to be opened or closed, the operator only needs to easily hold the handle groove 6511 and apply force.

[0030] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A nickel-titanium alloy polishing device, comprising an electrolytic cell (1), a cathode rod (2) fixedly arranged in the electrolytic cell (1), an anode cross bar (3) arranged at an opening of the electrolytic cell (1), and a placement rack (4) arranged on the anode cross bar (3) for placing nickel-titanium alloy; Features: The polishing device further comprises a cover plate (5) hingedly connected to one side of the opening of the electrolytic cell (1) for sealing, a gas extraction mechanism (6) arranged on the cover plate (5) for extracting gas from the electrolytic cell (1), and a collection bag (7) connected to the gas extraction mechanism (6) for collecting gas; The air extraction mechanism (6) comprises a fixed cylinder (61) which longitudinally penetrates the cover plate (5) and is fixedly connected to the cover plate (5), an air inlet pipe (62) fixedly arranged at the bottom end of the fixed cylinder (61), a piston (63) which moves longitudinally in the fixed cylinder (61), an air outlet pipe (64) fixedly arranged at one side of the fixed cylinder (61) and connected to the collection bag (7), a driving component (65) arranged on the cover plate (5) for driving the piston (63) to move, and a transmission component (66) arranged on the cover plate (5) for transmitting the driving force of the driving component (65) to the placement rack (4) to rotate the nickel-titanium alloy.

2. The nickel-titanium alloy polishing device according to claim 1, characterized in that: The driving assembly (65) comprises a fixing plate (651) fixedly arranged on the cover plate (5) at a side corresponding to the fixing cylinder (61), a mounting box (652) fixedly arranged on the fixing plate (651) at a side close to the fixing cylinder (61), a connecting shaft (653) which sequentially passes through the fixing plate (651) and the mounting box (652) transversely and is rotatably connected to the fixing plate (651) and the mounting box (652), and a connecting shaft (653) fixedly arranged on the fixing plate (651) and used to drive the connecting shaft (653) to rotate. A motor (654) for driving the motor (654), a rotating wheel (655) fixedly arranged at one end of the connecting shaft (653) away from the motor (654) and located outside the mounting box (652), an eccentric connecting rod (656) rotatably connected to the rotating wheel (655) and located above the fixed cylinder (61), and a push rod (657) longitudinally movable on the fixed cylinder (61) and rotatably connected to the bottom end of the eccentric connecting rod (656), wherein the bottom end of the push rod (657) is fixedly connected to the top end of the piston (63).

3. The nickel-titanium alloy polishing device according to claim 2, characterized in that: The fixing plate (651) is provided with a handle groove (6511).

4. The nickel-titanium alloy polishing device according to claim 2, characterized in that: The transmission assembly (66) comprises a driving bevel gear (661) rotatably disposed in the installation box (652) and fixedly sleeved with the connecting shaft (653), a connecting bevel gear (662) rotatably disposed in the installation box (652) and meshing with the driving bevel gear (661), a rotating rod (663) longitudinally penetrating the cover plate (5) and fixedly connected to the connecting bevel gear (662), and a special-shaped plug-in block (664) disposed at the bottom end of the rotating rod (663) and connected to the placement rack (4), wherein the rotating rod (663) is rotatably connected to the cover plate (5).

5. The nickel-titanium alloy polishing device according to claim 4, characterized in that: The placement rack (4) comprises a hook (41) hooked on the anode cross bar (3), a collar block (42) fixedly connected to the hook (41) and located below the rotating rod (663), a mesh tube (43) rotatably connected to the collar block (42), and a special-shaped socket (44) opened at the top of the mesh tube (43) and adapted to the special-shaped plug block (664).

6. The nickel-titanium alloy polishing device according to claim 5, characterized in that: An electric telescopic rod (6631) is fixedly provided at the bottom end of the rotating rod (663) and is fixedly connected to the special-shaped plug block (664) for lifting and lowering the special-shaped plug block (664).

7. The nickel-titanium alloy polishing device according to claim 5, characterized in that: Symmetrical limit blocks (31) are fixedly arranged on the anode cross bar (3), and the hook (41) is located between the two limit blocks (31).

8. The nickel-titanium alloy polishing device according to claim 5, characterized in that: The mesh cylinder (43) is provided with through grooves (431) distributed in a ring array.

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