Multi-station electrochemical polishing machine

Abstract

The utility model discloses a multi-station electrochemical polishing machine which comprises an electrolytic bath, a push rod mechanism used for driving a workpiece to move up and down to adjust the height is arranged above the electrolytic bath, and a workpiece carrier used for installing and fixing the workpiece is rotationally arranged on an installation plate at the moving end of the push rod mechanism. The workpiece carrier is rotationally connected with the mounting plate through a rotating shaft, a rotating mechanism used for driving the workpiece carrier to rotate around the rotating shaft to adjust the direction of a workpiece is arranged on the mounting plate, and the rotating mechanism and the push rod mechanism are both electrically connected with a control system of the polishing machine. Workpieces are fixed through the workpiece carrier, the positions of the workpieces in the electrolytic bath are adjusted through the push rod mechanism and the rotating mechanism, polishing control over the multiple workpieces can be conducted synchronously, the polishing liquid circulating system can filter impurities generated in polishing liquid during polishing, the polishing liquid can be recycled, and the polishing efficiency is improved. And the polishing quality can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical polishing equipment, in particular to a multi-station electrochemical polishing machine. Background Art

[0002] Electrochemical polishing is a process in which the workpiece to be polished is used as the anode and the inactive metal is used as the cathode. Both electrodes are immersed in the electrolytic cell at the same time. At a certain temperature, voltage and current density, the power is turned on for a certain period of time to produce selective anodic dissolution. The tiny protrusions on the surface of the workpiece are dissolved first, and gradually become a smooth and bright surface, thereby achieving the effect of increasing the surface finish of the workpiece. Electrochemical polishing is an electrochemical dissolution process without the action of mechanical force, so it will not cause surface deformation of the metal, avoids the deformation layer produced on the surface of the sample during mechanical polishing, and truly displays the metallographic structure. Moreover, electrochemical polishing has low requirements on the degree of sample polishing, fast polishing speed and high efficiency.

[0003] Most existing electrochemical polishing machines can only process single pieces, which limits their production efficiency and processing capacity to a certain extent. Single-piece processing means that only one workpiece can be processed at a time, which leads to increased processing time and reduced overall production efficiency. Especially in scenarios where large-scale production or continuous processing of multiple workpieces is required, this single-piece processing method is particularly inefficient.

[0004] During the electrolytic polishing process, the anode surface of the workpiece will be dissolved, and metal ions will enter the electrolyte and react chemically with it to generate anode products such as soluble salts. If the products are retained and accumulated near the workpiece, the electrolyte concentration will increase, hindering the smooth progress of electrolytic polishing. In addition, during the electrolytic polishing process, redox reactions will occur, which will generate heat and cause the solution temperature to rise, which will have an extremely adverse effect on the polishing effect. Utility Model Content

[0005] Technical purpose: In view of the shortcomings of the above-mentioned existing electrochemical polishing equipment, the utility model discloses a multi-station electrochemical polishing machine which can realize the circulation filtration and renewal of polishing liquid, and simultaneously polish multiple workpieces to ensure the polishing quality.

[0006] Technical solution: To achieve the above technical objectives, the utility model adopts the following technical solution:

[0007] A multi-station electrochemical polishing machine comprises an electrolytic cell, a push rod mechanism is arranged above the electrolytic cell for driving a workpiece to move up and down to adjust the height, a workpiece carrier is rotatably arranged on a mounting plate at the movable end of the push rod mechanism for mounting and fixing the workpiece, the workpiece carrier is rotatably connected to the mounting plate via a rotating shaft, a rotating mechanism is arranged on the mounting plate for driving the workpiece carrier to rotate around the rotating shaft to adjust the direction of the workpiece, the rotating mechanism and the push rod mechanism are both electrically connected to the control system of the polishing machine, and the orientation of the workpiece during polishing is adjusted by the control system.

[0008] Preferably, the push rod mechanism of the utility model comprises an electric push rod and a guide rod parallel to the axial direction of the electric push rod, and the mounting plate is connected to the guide rod through a linear bearing.

[0009] Preferably, the rotating mechanism of the utility model comprises a belt motor, a transmission belt and a turntable arranged at the end of the workpiece carrier, and the turntable is connected to the driving end of the belt motor through the transmission belt.

[0010] Preferably, the electrolytic cell of the utility model is connected to a polishing liquid circulation system, which includes a polishing liquid inlet pipe and a polishing liquid outlet pipe connected to the electrolytic cell, and a peristaltic pump connected to the polishing liquid inlet pipe and the polishing liquid outlet pipe to provide power for polishing liquid circulation.

[0011] Preferably, the polishing liquid inlet pipe and the polishing liquid outlet pipe of the utility model are both provided with built-in filter screens for filtering out impurities in the polishing liquid.

[0012] Preferably, the mounting plate of the utility model is provided with a conductive block electrically connected to the workpiece carrier, and a spiral cathode is provided in the electrolytic cell, wherein the spiral cathode is located outside the workpiece carrier, and the conductive block and the spiral cathode are respectively connected to the positive and negative poles of the DC power supply, and when the workpiece carrier drives the workpiece into the polishing liquid, the surface of the workpiece is polished.

[0013] Beneficial effects: The multi-station electrochemical polishing machine provided by the utility model has the following beneficial effects:

[0014] 1. The utility model fixes the workpiece by means of a workpiece carrier, and adjusts the position of the workpiece in the electrolytic cell by means of a push rod mechanism and a rotating mechanism, and can synchronously perform polishing control on multiple workpieces and ensure polishing quality.

[0015] 2. The push rod mechanism of the utility model is provided with a guide rod to guide the movement of the mounting plate, which can ensure the stability of the lifting and lowering of the workpiece, thereby realizing accurate control of the position of the workpiece immersed in the polishing liquid.

[0016] 3. The electrolytic cell of the utility model is connected with a polishing liquid circulation system, which can filter the impurities generated by polishing in the polishing liquid, so that the polishing liquid can be recycled without frequent replacement, thus saving costs; at the same time, the polishing liquid is in a flowing state, which can reduce the accumulation of products near the workpiece, so that the electrolytic polishing can proceed smoothly and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0018] Figure 1 It is a three-dimensional diagram of the polishing machine of the present invention;

[0019] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A area;

[0020] Figure 3 This is a front view of the polishing machine of the present invention;

[0021] Among them, 1-electrolytic cell, 2-push rod mechanism, 3-mounting plate, 4-workpiece carrier, 5-electric push rod, 6-guide rod, 7-linear bearing, 8-belt motor, 9-transmission belt, 10-turntable, 11-polishing liquid inlet pipe, 12-polishing liquid outlet pipe, 13-built-in filter, 14-conductive block, 15-spiral cathode. DETAILED DESCRIPTION

[0022] Reference will now be made in detail to embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by explaining the apparatus, composition and materials of the present disclosure, rather than limiting. On the contrary, the following description provides a convenient illustration of an exemplary embodiment for implementing the present disclosure. In fact, it will be clear to those skilled in the art that various modifications and variations can be made in the teachings of the present disclosure without departing from the scope or spirit of the present disclosure. For example, a feature shown or described as a part of an embodiment can be used in conjunction with another embodiment to produce yet another embodiment. It is expected that the present disclosure covers such modifications and variations within the scope of the appended claims and their equivalents. Other objects, features and aspects of the present disclosure are disclosed in or clear from the following detailed description. It will be understood by those of ordinary skill in the art that this discussion is only a description of exemplary embodiments and is not intended to limit the wider aspects of the present disclosure.

[0023] like Figure 1-Figure 3The figure shows a multi-station electrochemical polishing machine disclosed by the utility model, comprising an electrolytic cell 1, a push rod mechanism 2 is arranged above the electrolytic cell 1 for driving the workpiece to move up and down to adjust the height, a workpiece carrier 4 is rotatably arranged on a mounting plate 3 at the movable end of the push rod mechanism 2 for mounting and fixing the workpiece, the workpiece carrier 4 is rotatably connected to the mounting plate 3 through a rotating shaft, and a rotating mechanism is arranged on the mounting plate 3 for driving the workpiece carrier 4 to rotate around the rotating shaft to adjust the direction of the workpiece, the rotating mechanism and the push rod mechanism 2 are both electrically connected to the control system of the polishing machine, and the orientation of the workpiece during polishing is adjusted by the control system.

[0024] The mounting plate 3 is provided with a conductive block 14 electrically connected to the workpiece carrier 4, and a spiral cathode 15 is provided in the electrolytic cell 1. The spiral cathode 15 is located outside the workpiece carrier 4. The conductive block 14 and the spiral cathode 15 are respectively connected to the positive and negative electrodes of the DC power supply. When the workpiece carrier 4 drives the workpiece into the polishing liquid, the surface of the workpiece is polished.

[0025] In a specific embodiment, the push rod mechanism 2 of the utility model includes an electric push rod 5 and a guide rod 6 parallel to the axial direction of the electric push rod 5, and the mounting plate 3 is connected to the guide rod 6 through a linear bearing 7; the rotating mechanism includes a belt motor 8, a transmission belt 9 and a turntable 10 arranged at the end of the workpiece carrier 4, and the turntable 10 is connected to the driving end of the belt motor 8 through the transmission belt 9.

[0026] By cooperating with the push rod mechanism 2 and the rotating mechanism, the position of the workpiece can be accurately adjusted to ensure the accuracy of polishing.

[0027] At the same time, since electrochemical polishing will produce impurities in the polishing liquid, the polishing liquid needs to be replaced. At the same time, the electrochemical reaction of polishing will cause the temperature around the workpiece to rise, affecting the polishing effect. For this reason, the electrolytic cell 1 of the utility model is connected to a polishing liquid circulation system, and the polishing liquid circulation system includes a polishing liquid inlet pipe 11 connected to the electrolytic cell 1, a polishing liquid outlet pipe 12, and a peristaltic pump connected to the polishing liquid inlet pipe 11 and the polishing liquid outlet pipe 12 to provide power for the circulation of the polishing liquid. Built-in filter screens 13 for filtering out impurities in the polishing liquid are provided on the polishing liquid inlet pipe 11 and the polishing liquid outlet pipe 12.

[0028] Through the polishing liquid circulation system, impurities accumulated in the polishing liquid can be removed regularly to ensure the cleanliness of the polishing liquid and to enable it to be reused, saving costs.

[0029] When the polishing machine of the utility model is in use, the workpiece is mounted on the workpiece carrier 4, and the circulation speed and pressure of the polishing liquid are determined according to the polishing requirements, and the flow rate of the peristaltic pump is used to control it to achieve the best polishing effect; the polishing process is started according to the preset program, the electric push rod 5 and the belt motor 8 work together to accurately immerse the workpiece in the polishing liquid and rotate it to the conductive polishing position, and the power is started for polishing. After the predetermined polishing time is reached, the workpiece is taken out of the polishing liquid, and the polishing liquid and polishing products remaining on the surface of the workpiece are removed after cleaning; in addition, the polishing parameters can be adjusted according to the polishing quality after polishing to improve the polishing quality and production efficiency.

Claims

1. A multi-station electrochemical polishing machine, characterized in that: The invention comprises an electrolytic cell (1), a push rod mechanism (2) is arranged above the electrolytic cell (1) and is used to drive a workpiece to move up and down to adjust the height, a workpiece carrier (4) is rotatably arranged on a mounting plate (3) at the movable end of the push rod mechanism (2) and is used to mount and fix the workpiece, the workpiece carrier (4) is rotatably connected to the mounting plate (3) via a rotating shaft, a rotating mechanism is arranged on the mounting plate (3) and is used to drive the workpiece carrier (4) to rotate around the rotating shaft to adjust the direction of the workpiece, the rotating mechanism and the push rod mechanism (2) are both electrically connected to a control system of a polishing machine, and the orientation of the workpiece during polishing is adjusted via the control system.

2. A multi-station electrochemical polishing machine according to claim 1, characterized in that: The push rod mechanism (2) comprises an electric push rod (5) and a guide rod (6) parallel to the axial direction of the electric push rod (5); the mounting plate (3) is connected to the guide rod (6) via a linear bearing (7).

3. A multi-station electrochemical polishing machine according to claim 1, characterized in that: The rotating mechanism comprises a belt motor (8), a transmission belt (9), and a turntable (10) arranged at the end of the workpiece carrier (4); the turntable (10) is connected to the driving end of the belt motor (8) via the transmission belt (9).

4. A multi-station electrochemical polishing machine according to claim 1, characterized in that: The electrolytic cell (1) is connected to a polishing liquid circulation system, the polishing liquid circulation system comprising a polishing liquid inlet pipe (11) and a polishing liquid outlet pipe (12) connected to the electrolytic cell (1), and a peristaltic pump connected to the polishing liquid inlet pipe (11) and the polishing liquid outlet pipe (12) to provide power for the circulation of the polishing liquid.

5. A multi-station electrochemical polishing machine according to claim 4, characterized in that: The polishing liquid inlet pipe (11) and the polishing liquid outlet pipe (12) are both provided with built-in filter screens (13) for filtering out impurities in the polishing liquid.

6. A multi-station electrochemical polishing machine according to claim 1, characterized in that: The mounting plate (3) is provided with a conductive block (14) electrically connected to the workpiece carrier (4); a spiral cathode (15) is provided in the electrolytic cell (1); the spiral cathode (15) is located outside the workpiece carrier (4); the conductive block (14) and the spiral cathode (15) are respectively connected to the positive electrode and the negative electrode of a direct current power supply; when the workpiece carrier (4) drives the workpiece into the polishing liquid, the surface of the workpiece is polished.

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