Electrolyte plasma polishing apparatus and method for polishing inner walls of open tubular bodies

Abstract

This invention discloses an electrolyte plasma polishing device and method for the inner wall of an open cylindrical body. The electrolyte plasma polishing device for the inner wall of the open cylindrical body has an adjustment mode and includes: a conveying device; an electrolyte plasma polishing device including a first clamping part and a cathode rod; a simulated electrode device including a simulated rod whose top surface is at the same height as the top surface of the cathode rod during polishing; a transfer device including a second clamping part; and a control device configured to: in the adjustment mode, firstly control the second clamping part to clamp the open cylindrical body and place it on the simulated rod, then control the transfer device to clamp and raise the open cylindrical body and transfer it to the first clamping part for clamping, and finally control the transfer device and / or the first clamping part to adjust the bottom surface of the inner wall of the open cylindrical body to a working distance from the top surface of the cathode rod during polishing, and then perform electrolyte plasma polishing on the inner wall of the open cylindrical body.

Description

Technical Field

[0001] This invention relates to the field of electrolyte plasma polishing, and particularly to an electrolyte plasma polishing device and polishing method for the inner wall of an open cylindrical body. Background Technology

[0002] Electrolyte plasma polishing is a novel polishing technology and a developing trend in the field of stainless steel polishing. Its basic principle is to form an air layer between the workpiece and the polishing solution, and then use plasma discharge to remove microscopic protrusions on the workpiece surface to achieve polishing. It can polish any surface of an object immersed in the solution. Compared to traditional polishing, its polishing solution is a lower concentration salt solution, which can be recycled by replenishing the salt solution and does not produce harmful substances. Compared to traditional mechanical polishing methods, electrolyte plasma polishing is simple to operate, low in cost, and highly efficient. The processing time for typical parts is only 1-5 minutes, and the processing is not limited by the shape of the part. It can process grooves, internal holes, and other areas that traditional polishing cannot reach. It also helps to solve the environmental pollution problems that are unavoidable with chemical and electrochemical polishing. This technology is widely used in metal surface polishing, deburring, passivation, and oxide layer removal.

[0003] Electrolyte plasma polishing involves high-voltage DC operation, which is inherently dangerous and cannot be performed manually. Automated polishing equipment, designed for safety and mass production, is typically used to assist in the process. For open-end cylindrical structures, such as cylinders, the inner wall of the workpiece can vary significantly in shape and size due to differences in processing batches and suppliers. Therefore, it is crucial to strictly control the working distance between the bottom surface of the inner wall of the open-end cylindrical structure and the top surface of the cathode in the height direction. An excessively large working distance will affect the polishing effect, while an excessively small working distance will cause overcurrent, damaging both the workpiece and the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide an electrolyte plasma polishing device for the inner wall of an open cylindrical body that can automatically and reliably adjust the working distance between the bottom surface of the inner wall of the open cylindrical body and the top surface of the cathode rod when performing electrolyte plasma polishing on open cylindrical bodies of different sizes.

[0005] The first aspect of this invention discloses an electrolyte plasma polishing device for the inner wall of an open cylindrical body, having an adjustment mode, including:

[0006] A conveying device for conveying an open cylindrical body to be polished;

[0007] An electrolyte plasma polishing apparatus includes a first conductive device and a second conductive device. The first conductive device includes a first clamping part connected to the anode of a power source, which is used to clamp and electrically connect the open cylindrical body during polishing. The second conductive device includes a cathode rod electrically connected to the cathode of a power source. The cathode rod is located below the first clamping part and is used to extend into the cavity of the open cylindrical body during polishing to perform electrolyte polishing on the open cylindrical body.

[0008] The simulated electrode device includes a simulated rod whose top surface is at the same height as the top surface of the cathode rod during polishing.

[0009] The transfer device includes a translation device, a first lifting device mounted on the translation device, and a second clamping part mounted on the first lifting device. The translation device and the first lifting device are used to translate and lift the second clamping part, and the second clamping part is used to clamp and release the open cylindrical body.

[0010] The control device, signal-connected to the electrolyte plasma polishing device and the transfer device, is configured to: in adjustment mode, firstly control the transfer device to clamp the open cylindrical body from the conveying device through its second clamping part and place the open cylindrical body on the simulation rod; then control the transfer device to clamp and raise the open cylindrical body placed on the simulation rod and transfer it to the first clamping part for clamping; after the transfer device clamps the open cylindrical body from the simulation rod, control the transfer device and / or the first clamping part to adjust the bottom surface of the inner wall of the open cylindrical body to a working distance from the top surface of the cathode rod during polishing, and then perform electrolyte plasma polishing on the inner wall of the open cylindrical body.

[0011] In some embodiments, the simulated electrode device includes a second lifting device, the simulated rod is disposed on the second lifting device, and the second lifting device is used to adjust the height of the simulated rod.

[0012] In some embodiments, the second lifting device includes a servo motor, a lead screw driven by the servo motor, and a slider threadedly connected to the lead screw, wherein the analog rod is fixedly connected to the slider.

[0013] In some embodiments, the simulated electrode device further includes a guide sleeve through which the simulated rod passes, the guide sleeve being used to guide the raising and lowering of the simulated rod.

[0014] In some embodiments, the translation device includes a first slide rail extending along a first direction, a first sliding part slidably engaged with the first slide rail, a second slide rail disposed on the first sliding part extending along a second direction perpendicular to the first direction, and a second sliding part slidably engaged with the second slide rail, wherein the first direction and the second direction are both horizontal directions, and the first lifting device includes a third slide rail fixedly connected to the second sliding part and extending along a vertical direction, and a third sliding part slidably engaged with the third slide rail, wherein the second clamping part is fixedly connected to the third sliding part.

[0015] In some embodiments, the transfer device includes two or more second clamping portions disposed on the third sliding portion, the simulated electrode device includes two or more simulated rods, and the simulated electrode device further includes a distance measuring sensor disposed at the top of the simulated rod and signal-connected to the control device. The distance measuring sensor is used to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body clamped by the transfer device and the top surface of the simulated rod is equal to the working distance.

[0016] In some embodiments, the conveying device includes a conveyor belt and a flexible positioning component disposed on the conveyor belt. The flexible positioning component includes a plurality of coaxially arranged discs, the radial dimensions of which gradually decrease along a direction away from the conveyor belt.

[0017] In some embodiments, the plurality of discs comprises a plurality of stacked discs.

[0018] The second aspect of this invention discloses a method for electrolyte plasma polishing of the inner wall of an open cylindrical body, using any of the aforementioned electrolyte plasma polishing equipment for the inner wall of an open cylindrical body, comprising:

[0019] The conveying device is used to convey the open cylindrical body to be polished;

[0020] The second clamping part is translated and / or raised and lowered to clamp the open cylindrical body from the conveying device. Then, the second clamping part is translated and / or raised and lowered to move the clamped open cylindrical body directly above the simulation rod. In adjustment mode, the second clamping part releases the open cylindrical body so that the open cylindrical body falls onto the simulation rod so that the bottom surface of the inner wall of the open cylindrical body is attached to the top surface of the simulation rod. Then, the second clamping part clamps the open cylindrical body and transfers it to the first clamping part for clamping. After the transfer device clamps the open cylindrical body from the simulation rod, the transfer device and / or the first clamping part are controlled to adjust the bottom surface of the inner wall of the open cylindrical body to a working distance from the height of the top surface of the cathode rod during polishing.

[0021] The inner wall of the open cylindrical body is polished using the electrolyte plasma polishing device.

[0022] In some embodiments, when the first clamping part receives the open cylindrical body at a first height position, and after receiving the open cylindrical body, drives the open cylindrical body down to a second height position and begins polishing the clamped open cylindrical body, the open cylindrical body falls onto the simulated rod so that the bottom surface of the inner wall of the open cylindrical body adheres to the top surface of the simulated rod. Then, the second clamping part clamps the open cylindrical body and transfers the open cylindrical body to the first clamping part for clamping includes: lowering the second clamping part to a position a first distance from the top surface of the simulated rod and clamping the open cylindrical body, then transferring the open cylindrical body to the first clamping part for clamping, and such that the distance between the position where the first clamping part begins to clamp the open cylindrical body and the bottom surface of the inner wall of the clamped open cylindrical body is the sum of the first distance and the working distance, and the height of the first clamping part at the second height position is the same as the height of the second clamping part when it is lowered to the position a first distance from the top surface of the simulated rod.

[0023] In some embodiments, the transfer device includes two or more second clamping portions disposed on the first lifting device, the simulated electrode device includes two or more simulated rods, and the simulated electrode device further includes a distance measuring sensor disposed at the top of the simulated rod and signal-connected to the control device. The translation and / or lifting of the second clamping portion to move the clamped open cylindrical body directly above the simulated rod includes: translating and / or lifting the second clamping portion to move it to a check position where the height distance between the bottom surface of the inner wall of the clamped open cylindrical body and the top surface of the simulated rod is checked to determine if it is the working distance; and using the distance measuring sensor to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body clamped by the two or more second clamping portions and the top surface of the simulated rod is equal to the working distance.

[0024] In some embodiments, the conveying device includes a conveyor belt and a flexible positioning component disposed on the conveyor belt. The flexible positioning component includes a plurality of coaxially arranged discs. The radial dimensions of the plurality of discs gradually decrease along the direction away from the conveyor belt. Conveying an open cylindrical body to be polished using the conveying device includes: placing the open cylindrical body on the flexible positioning component such that the opening of the open cylindrical body covers at least one disc.

[0025] Based on the electrolyte plasma polishing equipment for the inner wall of an open cylindrical body provided by the present invention, by setting up a transfer device and a simulated electrode device including a simulated rod whose top surface is at the same height as the top surface of the cathode rod during polishing, before transferring the open cylindrical body to the first clamping part of the electrolyte plasma polishing device in the adjustment mode where adjustment of the open cylindrical body is required, the transfer device and the simulated electrode device can accurately check and position the bottom surface height of the inner wall of the open cylindrical body. Then, the distance between the bottom surface of the inner wall of the open cylindrical body and the top surface of the cathode rod in the height direction during polishing can be accurately and reliably adjusted to the working distance. Thus, reliable and stable feeding of electrolyte plasma polishing can be achieved for open cylindrical bodies with different inner wall bottom surface heights, realizing flexible feeding.

[0026] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the open cylindrical inner wall electrolyte plasma polishing device according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A top view schematic diagram of the flexible positioning part of the conveying device in the open cylindrical inner wall electrolyte plasma polishing equipment shown;

[0030] Figure 3 for Figure 2 A schematic diagram of the front view of the flexible positioning part shown;

[0031] Figure 4 for Figure 1 A schematic diagram of the simulated electrode device for an open cylindrical inner wall electrolyte plasma polishing device is shown.

[0032] Figure 5 for Figure 4 A cross-sectional schematic diagram of a portion of the simulated electrode device shown.

[0033] Figure 6 for Figure 1 The diagram shows a partial structural diagram of the electrolyte plasma polishing device in the open cylindrical inner wall electrolyte plasma polishing equipment. Detailed Implementation

[0034] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] In the description of this invention, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0039] The open cylindrical inner wall electrolyte plasma polishing device disclosed in this embodiment has an adjustment mode. The open cylindrical inner wall electrolyte plasma polishing device includes a conveying device 1, an electrolyte plasma polishing device 5, a simulated electrode device 3, a transfer device, and a control device.

[0040] The conveying device 1 is used to convey the open cylindrical body 100 to be polished. The open cylindrical body 100 is a cylindrical structure with one end closed. The cross-sectional shape of the open cylindrical body 100 can be square, circular, or other shapes. In the embodiment shown in the figure, the open cylindrical body 100 is cylindrical.

[0041] like Figure 1 and Figure 6 As shown, the electrolyte plasma polishing apparatus 5 includes a first conductive device 51 and a second conductive device. The first conductive device 51 includes a first clamping part 511 connected to the anode of the power supply. The first clamping part 511 is used to clamp and electrically connect the open cylindrical body 100 during polishing. The second conductive device includes a cathode rod 521 electrically connected to the cathode of the power supply. The cathode rod 521 is located below the first clamping part 511. The cathode rod 521 is used to extend into the cavity of the open cylindrical body 100 during polishing to perform electrolyte polishing on the open cylindrical body 100. The cathode rod 521 can extend into the cavity of the open cylindrical body 100 during electrolyte polishing by keeping the cathode rod 521 in a fixed working position and moving the open cylindrical body 100 to allow the cathode rod 521 to extend in. Alternatively, the first clamping part 511 can clamp the open cylindrical body 100 and keep it fixed, allowing the cathode rod 521 to move to the working position during polishing, thereby extending into the cavity of the open cylindrical body 100. During electrolyte polishing, a salt solution is sprayed into the inner wall of the open cylindrical body 100, and the first clamping part 511 connects the open cylindrical body 100 to the anode of the power supply. Under the action of the cathode rod and the salt solution, the inner wall of the open cylindrical body 100 is polished.

[0042] like Figure 1 , Figure 4 and Figure 5 As shown, the simulated electrode device 3 includes a simulated rod 31 whose top surface is at the same height as the top surface of the cathode rod 521 during polishing. Referring to the working position of the cathode rod 521 during polishing of the open cylindrical body 100, the top surface height of the simulated rod 31 is set to be the same as the top surface height of the cathode rod 521.

[0043] like Figure 1 As shown, the transfer device includes a translation device 42, a first lifting device 41 mounted on the translation device 42, and a second clamping part 411 mounted on the first lifting device 41. The translation device 42 and the first lifting device 41 are used to translate and lift the second clamping part 411, and the second clamping part 411 is used to clamp and release the open cylindrical body 100. The first lifting device can lift the second clamping part vertically, and the translation device can make the first lifting device parallel in the horizontal plane, thereby enabling the second clamping part 411 to move flexibly in space.

[0044] The control device is signal-connected to the electrolyte plasma polishing device 5 and the transfer device. The control device is configured to: in adjustment mode, firstly control the transfer device to clamp the open cylindrical body 100 from the conveying device 1 through its second clamping part 411 and place the open cylindrical body 100 on the simulation rod. Then, control the transfer device to clamp the open cylindrical body 100 placed on the simulation rod and raise it before transferring the open cylindrical body 100 to the first clamping part 511 for clamping. After the transfer device clamps the open cylindrical body 100 from the simulation rod, control the transfer device and / or the first clamping part 511 to adjust the bottom surface of the inner wall of the open cylindrical body 100 to the working distance between the height distance of the inner wall and the top surface of the cathode rod 521 during polishing, and then perform electrolyte plasma polishing on the inner wall of the open cylindrical body 100. The transfer device consists of a translation device and a first lifting device. The transfer device is signal-connected to the control device, and the translation and lifting displacements of the transfer device are easily known. In this embodiment, the spatial movement displacement and coordinates of the second clamping part driven by the transfer device are also known. For example, a displacement sensor signal-connected to the control device can be set to know the displacement changes of the transfer device on the second clamping part in real time. When the open cylindrical bodies 100 are all standard parts, the transfer device can control the second clamping part to clamp the open cylindrical bodies 100 from a fixed position. Since the open cylindrical bodies 100 are all standard parts, the bottom height of the inner wall of each open cylindrical body 100 is the same. At this time, the transfer device can directly clamp the open cylindrical bodies 100 and transfer them to the first clamping part without entering the adjustment mode.

[0045] The adjustment mode refers to the mode in which the bottom height of the inner wall of the open cylindrical body 100 needs to be checked and adjusted. When the open cylindrical body 100 is not a standard part, or when there are differences in size between different batches, the bottom height of the inner wall of each open cylindrical body 100 is uneven. The electrolyte plasma polishing equipment for the inner wall of the open cylindrical body can then enter the adjustment mode. In the adjustment mode, after the second clamping part of the transfer device clamps the open cylindrical body, it first moves the open cylindrical body 100 directly above the simulation rod, with the opening of the open cylindrical body facing downward. The second clamping part releases the open cylindrical body 100, and the open cylindrical body 100 falls freely until its inner wall bottom surface is in contact with the simulation rod. Thus, the open cylindrical body can be moved with the open cylindrical body 100 in contact with the simulation rod as a reference, raising the height of the open cylindrical body 100 to a position above the working distance above the top surface of the cathode rod during polishing. The process of raising the open cylindrical body 100 to the working distance can be adjusted by the transfer device alone, or by the first clamping part. In this case, the lifting and lowering displacement of the first clamping part is also known in real time, similar to the above description.

[0046] The electrolyte plasma polishing equipment for the inner wall of the open cylindrical body in this embodiment, by setting up a transfer device and a simulated electrode device 3 including a simulated rod 31 whose top surface is at the same height as the top surface of the cathode rod 521 during polishing, allows for accurate calibration and positioning of the bottom surface height of the inner wall of the open cylindrical body 100 before transferring the open cylindrical body 100 to the first clamping part 511 of the electrolyte plasma polishing device 5 in the adjustment mode where adjustment of the open cylindrical body 100 is required. Then, the distance between the bottom surface of the inner wall of the open cylindrical body 100 and the top surface of the cathode rod 521 in the height direction during polishing can be accurately and reliably adjusted to the working distance. This enables reliable and stable feeding of electrolyte plasma for open cylindrical bodies with different inner wall bottom surface heights, achieving flexible feeding.

[0047] In some embodiments, such as Figure 4 and Figure 5 As shown, the simulated electrode device 3 includes a second lifting device, on which the simulated rod 31 is mounted. The second lifting device is used to adjust the height of the simulated rod 31. When the cathode rod is replaced or adjusted, this embodiment can conveniently adjust the simulated rod according to the change in height of the cathode rod after replacement or adjustment, offering flexible functionality and a wide range of applications. In some embodiments, such as Figure 4 and Figure 5As shown, the second lifting device includes a servo motor 321, a lead screw driven by the servo motor 321, and a slider 322 threadedly connected to the lead screw. A simulation rod 31 is fixedly connected to the slider 322. By driving the lead screw to rotate, the slider 322 can be driven to rise or fall along the height direction, thereby adjusting the height of the simulation rod 31. In the embodiment shown, the simulation rod 31 is mounted on the slider 322 via a fixing block 325. The simulation rod 31 can be easily disassembled for maintenance or replacement. The simulation rod 31 and the fixing block 325 are detachably threadedly connected, and the fixing block 325 is fixedly mounted on the slider 322.

[0048] In some embodiments, such as Figure 4 and Figure 5 As shown, the simulated electrode device 3 also includes a guide sleeve 323 through which the simulated rod 31 passes. The guide sleeve 323 is used to guide the raising and lowering of the simulated rod 31.

[0049] In some embodiments, such as Figure 1 As shown, the translation device 42 includes a first slide rail extending along a first direction, a first sliding part that slides in cooperation with the first slide rail, a second slide rail provided on the first sliding part that extends along a second direction perpendicular to the first direction, and a second sliding part that slides in cooperation with the second slide rail. Both the first and second directions are horizontal. The first lifting device 41 includes a third slide rail that is fixedly connected to the second sliding part and extends along a vertical direction, and a third sliding part that slides in cooperation with the third slide rail. The second clamping part 411 is fixedly connected to the third sliding part.

[0050] In some embodiments, such as Figure 1 As shown, the transfer device includes two or more second clamping portions 411 disposed on the third sliding portion, and the analog electrode device 3 includes two or more analog rods 31, such as... Figure 4 and Figure 5As shown, the simulated electrode device 3 also includes a distance sensor 324 located at the top of the simulated rod 31 and connected to the control device. The distance sensor 324 is used to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body 100 held by the transfer device and the top surface of the simulated rod 31 is equal to the working distance. The ranging sensor 324 includes a laser ranging sensor. In the embodiment shown in the figure, the third sliding part is provided with two second clamping parts 411. After the third sliding part 411 moves, it can move the two second clamping parts 411 simultaneously. When the third sliding part 411, along with the two second clamping parts 411, clamps the two open cylindrical bodies 100 and is located directly above the two simulated rods, the ranging sensors 324 on the two simulated rods respectively detect that the distances from the top surface of the open cylindrical body 100 above each of them to the top surface of their respective simulated rods 31 are h and H, respectively. When both h and H are equal to the working distance, the transfer device can directly transfer the two open cylindrical bodies 100 to the first clamping part. During this process, after adjusting the height of the two open cylindrical bodies, it can be ensured that the distance between the bottom surface of the inner wall of the two open cylindrical bodies and the top surface of the cathode rod is the working distance. That is, the electrolyte plasma polishing device for the inner wall of the open cylindrical bodies in this embodiment can avoid entering the adjustment mode during the transportation and polishing of the two open cylindrical bodies, thereby improving work efficiency.

[0051] In some embodiments, such as Figures 1 to 3 As shown, the conveying device 1 includes a conveyor belt 11 and a flexible positioning component 12 disposed on the conveyor belt 11. The flexible positioning component 12 includes multiple coaxially arranged disc-shaped members, and the radial dimensions of the multiple disc-shaped members gradually decrease along the direction away from the conveyor belt 11. The side of the flexible positioning component 12 is stepped, and each disc-shaped member can hold an open cylindrical body 100 with different radial dimensions. The opening of the open cylindrical body 100 faces downward and wraps around the disc-shaped members with a radial dimension smaller than its opening radial dimension. The radial dimension of the bottommost disc-shaped member wrapped around the opening is close to the radial dimension of the opening, and this disc-shaped member restricts the radial movement of the open cylindrical body. The opening end face of the open cylindrical body contacts the end face of the disc-shaped member below the bottommost disc-shaped member it wraps around. Since the radial dimensions of the disc-shaped members of the flexible positioning component 12 are different along the axial direction, it is possible to place open cylindrical bodies 100 with any radial dimension within the range of the radial dimensions of the topmost disc-shaped member to the bottommost disc-shaped member, with no height limit, and multiple open cylindrical bodies with different radial dimensions can be conveyed simultaneously.

[0052] In some embodiments, the plurality of disc-shaped components include a plurality of stacked discs. In the embodiment shown in the figure, the flexible positioning component 12 is a stepped boss-shaped structure made of nylon. A 10mm diameter through hole is located in the center of the disc for inserting a bolt, which is then locked and fixed to the conveyor via a bolt and nut structure. Each stepped end face can hold workpieces with a diameter deviation within 10mm. The boss-shaped structure maintains the stability of the open cylindrical body during conveying, keeps the open cylindrical body vertical, and ensures that the open cylindrical body is not easily dropped during conveying on the conveyor belt.

[0053] In some embodiments, an electrolyte plasma polishing method for the inner wall of an open cylindrical body is also disclosed, using any of the above-described electrolyte plasma polishing equipment for the inner wall of an open cylindrical body. The electrolyte plasma polishing method for the inner wall of an open cylindrical body includes:

[0054] The open cylindrical body 100 to be polished is conveyed using the conveying device 1;

[0055] The second clamping part 411 is translated and / or raised and lowered so that the second clamping part 411 clamps the open cylindrical body 100 from the conveying device 1. Then, the second clamping part 411 is translated and / or raised and lowered so that the second clamping part 411 moves the clamped open cylindrical body 100 directly above the simulation rod 31. In the adjustment mode, the second clamping part 411 releases the open cylindrical body 100 so that the open cylindrical body 100 falls onto the simulation rod 31 so that the bottom surface of the inner wall of the open cylindrical body 100 is attached to the top surface of the simulation rod 31. Then, the second clamping part 411 clamps the open cylindrical body 100 and transfers the open cylindrical body 100 to the first clamping part 511 for clamping. After the transfer device clamps the open cylindrical body 100 from the simulation rod, the transfer device and / or the first clamping part 511 are controlled to adjust the bottom surface of the inner wall of the open cylindrical body 100 to the working distance at the height distance from the top surface of the cathode rod 521 during polishing.

[0056] The inner wall of the open cylindrical body 100 is polished by electrolyte plasma polishing device 5.

[0057] In some embodiments, when the first clamping part 511 receives the open cylindrical body 100 at a first height position, and after receiving the open cylindrical body 100 and lowering it to a second height position, the first clamping part 511 drops the open cylindrical body 100 onto the simulation rod 31 so that the bottom surface of the inner wall of the open cylindrical body 100 adheres to the top surface of the simulation rod 31, and then the second clamping part 411 clamps the open cylindrical body 100 and transfers the open cylindrical body 100 to the first clamping part 511 for clamping includes: the second clamping part 411... After descending to a position a first distance from the top surface of the simulation rod 31, the open cylindrical body 100 is clamped. Then, the second clamping part 411 transfers the open cylindrical body 100 to the first clamping part 511 for clamping. The distance between the position of the first clamping part 511 when it begins to clamp the open cylindrical body 100 and the bottom surface of the inner wall of the clamped open cylindrical body 100 is the sum of the first distance and the working distance. The height of the first clamping part 511 at the second height position is the same as the height of the second clamping part 411 when it descends to the position a first distance from the top surface of the simulation rod 31. For example, the first distance is 60mm, the working distance is 20mm, and the distance between the position of the first clamping part 511 when it begins to clamp the open cylindrical body 100 and the bottom surface of the inner wall of the clamped open cylindrical body 100 is 80mm. The first clamping part 511 receives the open cylindrical body from a high position and then descends to the second height position to cooperate with the cathode rod to perform electrolyte polishing on the open cylindrical body.

[0058] In some embodiments, the transfer device includes two or more second clamping parts 411 disposed on the first lifting device 41, the analog electrode device 3 includes two or more analog rods 31, and the analog electrode device 3 further includes a distance measuring sensor 324 disposed at the top of the analog rod 31 and signal-connected to the control device. The translation and / or lifting of the second clamping parts 411 to move the clamped open cylindrical body 100 to directly above the analog rod 31 includes: translating and / or lifting the second clamping parts 411 to move the second clamping parts 411 to the check position where the height distance between the bottom surface of the inner wall of the clamped open cylindrical body 100 and the top surface of the analog rod 31 is checked to see if it is the working distance, and using the distance measuring sensor 324 to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body 100 clamped by the two or more second clamping parts 411 and the top surface of the analog rod 31 is equal to the working distance.

[0059] In some embodiments, the conveying device 1 includes a conveyor belt 11 and a flexible positioning member 12 disposed on the conveyor belt 11. The flexible positioning member 12 includes a plurality of coaxially arranged discs. The radial dimensions of the plurality of discs gradually decrease along the direction away from the conveyor belt 11. Conveying the open cylindrical body 100 to be polished using the conveying device 1 includes: placing the open cylindrical body 100 on the flexible positioning member so that the opening of the open cylindrical body 100 covers at least one disc.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. An electrolyte plasma polishing device for the inner wall of an open cylindrical body, characterized in that, It has adjustment modes, including: A conveying device for conveying an open cylindrical body to be polished; An electrolyte plasma polishing apparatus includes a first conductive device and a second conductive device. The first conductive device includes a first clamping part connected to the anode of a power source, which is used to clamp and electrically connect the open cylindrical body during polishing. The second conductive device includes a cathode rod electrically connected to the cathode of a power source. The cathode rod is located below the first clamping part and is used to extend into the cavity of the open cylindrical body during polishing to perform electrolyte polishing on the open cylindrical body. The simulated electrode device includes a simulated rod whose top surface is at the same height as the top surface of the cathode rod during polishing. The transfer device includes a translation device, a first lifting device mounted on the translation device, and a second clamping part mounted on the first lifting device. The translation device and the first lifting device are used to translate and lift the second clamping part, and the second clamping part is used to clamp and release the open cylindrical body. The control device, signal-connected to the electrolyte plasma polishing device and the transfer device, is configured to: in adjustment mode, firstly control the transfer device to clamp the open cylindrical body from the conveying device through its second clamping part and place the open cylindrical body on the simulation rod; then control the transfer device to clamp and raise the open cylindrical body placed on the simulation rod and transfer it to the first clamping part for clamping; after the transfer device clamps the open cylindrical body from the simulation rod, control the transfer device and / or the first clamping part to adjust the bottom surface of the inner wall of the open cylindrical body to a working distance from the top surface of the cathode rod during polishing, and then perform electrolyte plasma polishing on the inner wall of the open cylindrical body.

2. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 1, characterized in that, The simulated electrode device includes a second lifting device, and the simulated rod is mounted on the second lifting device. The second lifting device is used to adjust the height of the simulated rod.

3. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 2, characterized in that, The second lifting device includes a servo motor, a lead screw driven by the servo motor, and a slider threadedly connected to the lead screw. The simulation rod is fixedly connected to the slider.

4. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 3, characterized in that, The simulated electrode device also includes a guide sleeve through which the simulated rod passes, and the guide sleeve is used to guide the raising and lowering of the simulated rod.

5. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 1, characterized in that, The translation device includes a first slide rail extending along a first direction, a first sliding part slidably engaged with the first slide rail, a second slide rail extending along a second direction perpendicular to the first direction and disposed on the first sliding part, and a second sliding part slidably engaged with the second slide rail. The first direction and the second direction are both horizontal directions. The first lifting device includes a third slide rail fixedly connected to the second sliding part and extending along a vertical direction, and a third sliding part slidably engaged with the third slide rail. The second clamping part is fixedly connected to the third sliding part.

6. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 5, characterized in that, The transfer device includes two or more second clamping parts disposed on the third sliding part, the simulated electrode device includes two or more simulated rods, and the simulated electrode device further includes a distance measuring sensor disposed at the top of the simulated rod and signal-connected to the control device. The distance measuring sensor is used to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body clamped by the transfer device and the top surface of the simulated rod is equal to the working distance.

7. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 1, characterized in that, The conveying device includes a conveyor belt and a flexible positioning component disposed on the conveyor belt. The flexible positioning component includes a plurality of coaxially arranged discs, and the radial dimensions of the plurality of discs gradually decrease along the direction away from the conveyor belt.

8. The open cylindrical inner wall electrolyte plasma polishing equipment as described in claim 7, characterized in that, The plurality of disc-shaped components include a plurality of stacked discs.

9. A method for electrolyte plasma polishing of the inner wall of an open cylindrical body, characterized in that, The electrolyte plasma polishing apparatus for the inner wall of an open cylindrical body as described in any one of claims 1 to 8 comprises: The conveying device is used to convey the open cylindrical body to be polished; The second clamping part is translated and / or raised and lowered to clamp the open cylindrical body from the conveying device. Then, the second clamping part is translated and / or raised and lowered to move the clamped open cylindrical body directly above the simulation rod. In adjustment mode, the second clamping part releases the open cylindrical body so that the open cylindrical body falls onto the simulation rod so that the bottom surface of the inner wall of the open cylindrical body is attached to the top surface of the simulation rod. Then, the second clamping part clamps the open cylindrical body and transfers it to the first clamping part for clamping. After the transfer device clamps the open cylindrical body from the simulation rod, the transfer device and / or the first clamping part are controlled to adjust the bottom surface of the inner wall of the open cylindrical body to a working distance from the height of the top surface of the cathode rod during polishing. The inner wall of the open cylindrical body is polished using the electrolyte plasma polishing device.

10. The method for electrolyte plasma polishing of the inner wall of an open cylindrical body as described in claim 9, characterized in that, The first clamping part receives the open cylindrical body at a first height position, and after receiving the open cylindrical body, it lowers the open cylindrical body to a second height position and begins polishing the clamped open cylindrical body. The open cylindrical body falls onto the simulated rod so that the bottom surface of the inner wall of the open cylindrical body adheres to the top surface of the simulated rod. Then, the second clamping part clamps the open cylindrical body and transfers it to the first clamping part for clamping. This includes: lowering the second clamping part to a position a first distance from the top surface of the simulated rod and clamping the open cylindrical body; then transferring the open cylindrical body to the first clamping part for clamping; and ensuring that the distance between the position where the first clamping part begins clamping the open cylindrical body and the bottom surface of the inner wall of the clamped open cylindrical body is the sum of the first distance and the working distance. The height of the first clamping part at the second height position is the same as the height of the second clamping part when it lowers to the position a first distance from the top surface of the simulated rod.

11. The method for electrolyte plasma polishing of the inner wall of an open cylindrical body as described in claim 9, characterized in that, The transfer device includes two or more second clamping parts disposed on the first lifting device, the simulated electrode device includes two or more simulated rods, and the simulated electrode device further includes a distance measuring sensor disposed at the top of the simulated rod and signal-connected to the control device. The translation and / or lifting of the second clamping parts to move the clamped open cylindrical body directly above the simulated rod includes: translating and / or lifting the second clamping parts to move them to a check position where the height distance between the bottom surface of the inner wall of the clamped open cylindrical body and the top surface of the simulated rod is checked to determine if it is the working distance; and using the distance measuring sensor to detect whether the height distance between the bottom surface of the inner wall of the open cylindrical body clamped by the two or more second clamping parts and the top surface of the simulated rod is equal to the working distance.

12. The method for electrolyte plasma polishing of the inner wall of an open cylindrical body as described in claim 9, characterized in that, The conveying device includes a conveyor belt and a flexible positioning component disposed on the conveyor belt. The flexible positioning component includes a plurality of coaxially arranged discs. The radial dimensions of the plurality of discs gradually decrease along the direction away from the conveyor belt. Conveying the open cylindrical body to be polished using the conveying device includes: placing the open cylindrical body on the flexible positioning component so that the opening of the open cylindrical body covers at least one disc.

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