CN-117260404-B - Open cylindrical body inner wall electrolyte plasma polishing equipment and polishing method

CN117260404BCN 117260404 BCN117260404 BCN 117260404BCN-117260404-B

Abstract

The invention discloses an electrolyte plasma polishing device and a polishing method for an inner wall of an opening cylinder, wherein the electrolyte plasma polishing device comprises a conveying device, an electrolyte plasma polishing device, a simulation electrode device and a control device, wherein the electrolyte plasma polishing device comprises a first clamping part and a cathode rod, the simulation electrode device comprises a simulation rod with the top surface being the same as the top surface in the polishing operation of the cathode rod, the transfer device comprises a second clamping part, the control device is configured to firstly control the second clamping part to clamp the opening cylinder and place the opening cylinder on the simulation rod in the adjusting mode, then control the transfer device to clamp the opening cylinder to the first clamping part after clamping and lifting the opening cylinder, and finally control the transfer device and/or the first clamping part to adjust the bottom surface of the inner wall of the opening cylinder to be the working distance from the top surface in the polishing operation of the cathode rod, and then carry out electrolyte plasma polishing operation on the inner wall of the opening cylinder.

Inventors

MO LIDONG
ZONG XUEMEI
LIU JIANFEI

Assignees

江苏徐工工程机械研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20231108

Claims (12)

1. An open bowl inner wall electrolyte plasma polishing apparatus having an adjustment mode comprising: A conveying device for conveying the open cylindrical body to be polished; The electrolyte plasma polishing device comprises a first conductive device and a second conductive device, wherein the first conductive device comprises a first clamping part connected with an anode of a power supply, and the first clamping part is used for clamping and electrically connecting the opening cylinder body during polishing operation; the second conductive device comprises a cathode rod electrically connected with a cathode of the power supply, the cathode rod is arranged below the first clamping part, and the cathode rod is used for extending into a cylinder cavity of the opening cylinder body during polishing so as to carry out electrolyte polishing on the opening cylinder body; the simulation electrode device comprises a simulation rod with the top surface being the same as the top surface in the polishing operation of the cathode rod; The transfer device comprises a translation device, a first lifting device and a second clamping part, the first lifting device is arranged on the translation device, the second clamping part is arranged on the first lifting device, the translation device and the first lifting device are used for translating and lifting the second clamping part, and the second clamping part is used for clamping and releasing the opening cylinder body; And the control device is in signal connection with the electrolyte plasma polishing device and the transfer device and is configured to firstly control the transfer device to clamp the opening cylinder body from the conveying device through the second clamping part of the transfer device and place the opening cylinder body on the simulation rod, then control the transfer device to clamp and lift the opening cylinder body placed on the simulation rod and then transfer the opening cylinder body to the first clamping part for clamping, and after the transfer device clamps the opening cylinder body from the simulation rod, control the transfer device and/or the first clamping part to adjust the height distance between the bottom surface of the inner wall of the opening cylinder body and the top surface of the cathode rod to be the working distance, and then carry out electrolyte plasma polishing on the inner wall of the opening cylinder body.
2. The open ended cylindrical body inner wall electrolyte plasma polishing apparatus of claim 1, wherein the dummy electrode means comprises a second elevation means, the dummy bar being provided on the second elevation means, the second elevation means being for adjusting a height of the dummy bar.
3. The open-ended cylindrical body inner wall electrolyte plasma polishing apparatus of claim 2, wherein said second lifting device comprises a servo motor, a screw driven by said servo motor, a slider in threaded driving connection with said screw, and said dummy bar is fixedly connected with said slider.
4. The open-ended cylindrical body inner wall electrolyte plasma polishing apparatus of claim 3, wherein the dummy electrode means further comprises a guide sleeve through which the dummy rod passes, the guide sleeve being for guiding lifting of the dummy rod.
5. The open-ended cylindrical body inner wall electrolyte plasma polishing apparatus according to claim 1, wherein the translation device comprises a first slide rail extending along a first direction, a first slide portion slidingly engaged with the first slide rail, a second slide rail provided on the first slide portion and extending along a second direction perpendicular to the first direction, a second slide portion slidingly engaged with the second slide rail, the first direction and the second direction being both horizontal directions, the first lifting device comprises a third slide rail fixedly connected with the second slide portion and extending along a vertical direction, and a third slide portion slidingly engaged with the third slide rail, and the second clamping portion is fixedly connected with the third slide portion.
6. The open-ended cylindrical body inner wall electrolyte plasma polishing apparatus according to claim 5, wherein the transfer means includes two or more second holding portions provided on the third sliding portion, the dummy electrode means includes two or more dummy bars, the dummy electrode means further includes a distance measuring sensor provided at a tip of the dummy bars in signal connection with the control means, the distance measuring sensor being configured to detect whether or not a height distance between a bottom surface of an inner wall of the open-ended cylindrical body gripped by the transfer means and a top surface of the dummy bars is equal to a working distance.
7. The open bowl inner wall electrolyte plasma polishing apparatus of claim 1, wherein the conveyor comprises a conveyor belt and a flexible positioning member disposed on the conveyor belt, the flexible positioning member comprising a plurality of discs coaxially disposed, the plurality of discs progressively decreasing in radial dimension in a direction away from the conveyor belt.
8. The open ended cylindrical body inner wall electrolyte plasma polishing apparatus of claim 7, wherein the plurality of disks comprises a stacked plurality of disks.
9. A method of opening cylinder inner wall electrolyte plasma polishing, characterized by applying the opening cylinder inner wall electrolyte plasma polishing apparatus according to any one of claims 1 to 8, comprising: conveying the open cylinder to be polished by using the conveying device; Translating and/or lifting the second clamping part to clamp the open cylindrical body from the conveying device, then translating and/or lifting the second clamping part to enable the second clamping part to move the clamped open cylindrical body to be right above the simulation rod, in an adjustment mode, enabling the second clamping part to release the open cylindrical body to enable the open cylindrical body to fall 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, enabling the second clamping part to clamp the open cylindrical body and enable the open cylindrical body to be transferred to the first clamping part to be clamped, and controlling the transfer device and/or the first clamping part to adjust the bottom surface of the inner wall of the open cylindrical body to be a working distance from the top surface of the cathode rod when the cathode rod is polished after the transfer device clamps the open cylindrical body from the simulation rod; And (3) performing electrolyte plasma polishing on the inner wall of the opening cylindrical body by using the electrolyte plasma polishing device.
10. The method of claim 9, wherein the first clamping portion receives the open cylinder at a first height position, and when the open cylinder is driven to descend to a second height position after receiving the open cylinder and then starts polishing work on the clamped open cylinder, the open cylinder is dropped onto the dummy rod such that the bottom surface of the inner wall of the open cylinder is brought into abutment with the top surface of the dummy rod, and then the second clamping portion clamps the open cylinder and transfers the open cylinder to the first clamping portion, and then clamps the open cylinder after the second clamping portion descends to a position at a first distance from the top surface of the dummy rod, and then transfers the open cylinder to the first clamping portion, and such that the position at which the first clamping portion starts clamping the open cylinder is spaced from the bottom surface of the inner wall of the clamped open cylinder by a first distance and the working distance from the bottom surface of the clamped open cylinder is equal to the first height position at which the second clamping portion is spaced from the top surface of the first height position.
11. The method of claim 9, wherein the transfer device comprises two or more second clamping portions provided on the first lifting device, the dummy electrode device comprises two or more dummy bars, the dummy electrode device further comprises a distance measuring sensor provided at the top end of the dummy bar and connected to the control device, and translating and/or lifting the second clamping portions causes the second clamping portions to move the clamped open cylinder directly above the dummy bars comprises translating and/or lifting the second clamping portions to move the second clamping portions to check positions where the height distance between the bottom surfaces of the inner walls of the clamped open cylinder and the top surfaces of the dummy bars is equal to the working distance, and the distance measuring sensor detects whether the height distance between the bottom surfaces of the inner walls of the clamped open cylinder and the top surfaces of the dummy bars is equal to the working distance.
12. The method of claim 9, wherein the conveyor comprises a conveyor belt and a flexible positioning member disposed on the conveyor belt, the flexible positioning member comprising a plurality of discs coaxially disposed, the plurality of discs decreasing in radial dimension away from the conveyor belt, and wherein conveying the open cylinder to be polished with the conveyor comprises positioning the open cylinder on the flexible positioning member such that the opening of the open cylinder is wrapped around the at least one disc.

Description

Open cylindrical body inner wall electrolyte plasma polishing equipment and polishing method Technical Field The invention relates to the field of electrolyte plasma polishing, in particular to an open cylindrical body inner wall electrolyte plasma polishing device and a polishing method. Background The electrolyte plasma polishing is a novel polishing technology and is a development trend in the field of stainless steel polishing. The basic principle is that a gas layer is formed between a workpiece and polishing solution, microscopic protrusions on the surface of the workpiece are removed through plasma discharge to realize polishing, and any surface of an object immersed in the solution can be polished. Compared with the traditional mechanical polishing method, the electrolyte plasma polishing method has the advantages of simple operation, low cost and high processing efficiency, the processing time of common parts is only 1-5 minutes, the processing is not limited by the shape of the parts, and the positions of grooves, inner holes and the like which cannot be processed by the traditional polishing can be processed. The technology is more favorable for solving the problem of environmental pollution which is difficult to avoid in chemical and electrochemical polishing, and is widely applied to occasions such as polishing metal surfaces, deburring, passivation, oxide layer removal and the like. The operation danger of direct current high voltage operation is great in the electrolyte plasma polishing operation process, can't rely on the manual work to accomplish the operation, uses the automation polishing equipment that satisfies security and mass production to assist polishing generally. In the process of polishing electrolyte plasma, the inner wall of the open tubular body structure such as a cylinder is provided with an opening, and the workpiece has larger difference in appearance and size due to different processing batches and suppliers. Disclosure of Invention The invention aims to provide an open cylinder inner wall electrolyte plasma polishing device capable of automatically and reliably adjusting working distances between inner wall bottom surfaces of open cylinders with different sizes and top surfaces of cathode rods in the process of polishing open cylinder electrolyte plasma. The first aspect of the present invention discloses an open cylinder inner wall electrolyte plasma polishing apparatus having an adjustment mode, comprising: A conveying device for conveying the open cylindrical body to be polished; The electrolyte plasma polishing device comprises a first conductive device and a second conductive device, wherein the first conductive device comprises a first clamping part connected with an anode of a power supply, and the first clamping part is used for clamping and electrically connecting the opening cylinder body during polishing operation; the second conductive device comprises a cathode rod electrically connected with a cathode of the power supply, the cathode rod is arranged below the first clamping part, and the cathode rod is used for extending into a cylinder cavity of the opening cylinder body during polishing so as to carry out electrolyte polishing on the opening cylinder body; the simulation electrode device comprises a simulation rod with the top surface being the same as the top surface in the polishing operation of the cathode rod; The transfer device comprises a translation device, a first lifting device and a second clamping part, the first lifting device is arranged on the translation device, the second clamping part is arranged on the first lifting device, the translation device and the first lifting device are used for translating and lifting the second clamping part, and the second clamping part is used for clamping and releasing the opening cylinder body; And the control device is in signal connection with the electrolyte plasma polishing device and the transfer device and is configured to firstly control the transfer device to clamp the opening cylinder body from the conveying device through the second clamping part of the transfer device and place the opening cylinder body on the simulation rod, then control the transfer device to clamp and lift the opening cylinder body placed on the simulation rod and then transfer the opening cylinder body to the first clamping part for clamping, and after the transfer device clamps the opening cylinder body from the simulation rod, control the transfer device and/or the first clamping part to adjust the height distance between the bottom surface of the inner wall of the opening cylinder body and the top surface of the cathode rod to be the working distance, and then carry out electrolyte plasma polishing on the inner wall of the opening cylinder body. In some embodiments, the analog electrode means comprises a second elevating means, the analog rod being provided on the second elevating means, the second elevating means being