Electric brush plating device for in-situ repair of shaft parts

Abstract

The utility model relates to an electric brush plating device for repairing shaft parts in situ. The electric brush plating device comprises a base, a brush plating assembly, a motor assembly and an anode brush assembly, according to the device, the brush plating anode is fixed by the connecting bracket coaxial with the to-be-plated part and is connected with the anode of the power supply through the conducting strip, the to-be-plated part is connected with the cathode of the power supply, and the brush plating anode is driven by the motor to rotate on the outer wall of the to-be-plated part, so that the brush plating work of the shaft part is realized. Workpiece rotation is replaced by brush plating device rotation, brush plating work for appearance repairing of parts can be carried out in situ, restricting factors such as insufficient operation space and use safety are effectively avoided, and the brush plating device is convenient to carry, small in size and easy to use. Besides, the size and the shape of the brush plating anode can be changed according to parts to be plated, in-situ repair work of shaft parts of various sizes and specifications can be completed, and universality is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric brush plating, and in particular relates to an electric brush plating device for in-situ repairing shaft parts. Background Art

[0002] In the maintenance of aviation equipment, some shaft parts with metal coatings installed on the aircraft wall panels 17 (bolts, pins, etc.) are worn and corroded during use, resulting in reduced product functionality and mismatching dimensions. In order to meet the use requirements of the product, it is necessary to repair the appearance of the metal coating on the surface of such parts. However, for parts that cannot be disassembled or parts whose positioning accuracy will be reduced by disassembly, in-situ repair is the only option.

[0003] At present, the commonly used repair method is brush plating, which is a kind of surface remanufacturing technology. It uses electrochemical deposition method to quickly obtain high-performance smooth and dense electroplating layer on the surface of metal parts. This technology can restore the dimensional accuracy and geometric shape accuracy of worn parts, fill the scratches on the surface of parts, and improve the wear resistance, conductivity, high temperature resistance and corrosion resistance of the surface of parts.

[0004] However, the traditional brush plating technology has the following problems: (1) The operator holds a brush pen and dips it into an appropriate amount of brush plating liquid and repeatedly brushes it at a certain speed. This method is labor-intensive and has extremely low work efficiency; (2) The speed of manual brushing cannot be maintained uniformly, resulting in uneven coating, which requires subsequent mechanical processing to further ensure the dimensional accuracy of the product.

[0005] In view of the problems existing in the above-mentioned traditional brush plating, the invention patent CN 109023456B provides a brush plating device for repairing hole parts, a motor, a motor bracket, a positioning rod and a screw connecting a brush plating pen, which realizes mechanical automatic brush plating by fixing the brush plating pen, reducing manual participation. The invention patent CN 107142505 B provides a brush plating device for repairing inner holes of parts, including a bracket, a brush plating pen clamping assembly, a driving assembly and a power supply. The device can make the clamping of the brush plating pen and the parts to be processed more convenient and is suitable for repairing various hole diameters.

[0006] However, the above patents still have the following disadvantages: (1) The above devices all use the method of rotating the parts to be plated for brush plating. For parts with a large rotation radius, factors such as operating space and safety of use need to be considered; (2) The repair type has certain limitations and can only repair parts with holes; (3) The structural size of the above devices is large and cannot achieve in-situ repair of parts. Utility Model Content

[0007] The utility model aims to solve the shortcomings of the prior art that parts need to be disassembled during electroplating, the work efficiency is low, and the process is complicated. For this purpose, an electric brush plating device for in-situ repairing shaft parts is provided.

[0008] To achieve the above purpose, the technical solution provided by the utility model is:

[0009] An electric brush plating device for in-situ repair of shaft parts has the following special features:

[0010] It includes a base, a brush plating assembly, a motor assembly and an anode brush assembly;

[0011] The brush plating assembly comprises a bearing bracket, a rolling bearing, a conductive ring, a connecting bracket and a plurality of brush plating units; the bearing bracket is fixed on the base, and the rolling bearing is interference-fitted in the bearing bracket;

[0012] The connecting bracket is a coaxial cylinder with increasing diameters, which includes a rotating shaft, a small diameter part and a large diameter part; the rolling bearing is sleeved on the rotating shaft; the small diameter part is sleeved with a conductive ring, and a circle of limiting grooves is provided on the outer wall of the conductive ring; the large diameter part is a hollow cylinder, the inner diameter of the large diameter part is larger than the outer diameter of the part to be plated, and the part to be plated coaxially extends into the large diameter part;

[0013] The motor assembly includes a motor and a coupling; the motor is fixed on the base; the coupling is coaxially connected to the output shaft of the motor and the rotating shaft of the connecting bracket, so that the motor assembly stably drives the connecting bracket to rotate;

[0014] The large diameter portion is provided with a plurality of brush plating units, the brush plating units comprising a brush plating anode, an adjusting bolt and an adjusting spring; the tail of the adjusting bolt axially passes through the outer wall of the large diameter portion, and the adjusting spring is sleeved on the tail of the adjusting bolt, and the two ends of the adjusting spring respectively abut against the brush plating anode and the inner wall of the large diameter portion;

[0015] The brush plating anode is an arc surface, and has the same arc as the part to be plated; the outer arc surface of the brush plating anode is fixed to the tail end of the adjustment spring, and the adjustment spring presses the brush plating anode tightly against the outer wall of the part to be plated; the inner arc surface of the brush plating anode is dipped in the brush plating solution, and the rotation of the motor drives the brush plating anode to rotate and brush plate the outer wall of the part to be plated;

[0016] The anode brush assembly includes a conductive sheet; the conductive sheet is overlapped in the limiting groove and is connected to the conductive ring; the conductive sheet is connected to the anode of the brush plating power supply, and the part to be plated is connected to the cathode of the brush plating power supply.

[0017] Further,

[0018] A tightening nut is welded at the center of the outer arc surface of the brush-plated anode, and the brush-plated anode is connected to the tail end of the adjusting bolt through the tightening nut and contacts the adjusting spring.

[0019] Further,

[0020] There are two brush plating units, and the adjusting bolts of the two brush plating units pass symmetrically through the outer wall of the large diameter part, and the axes of the two adjusting bolts are coplanar.

[0021] Further,

[0022] The anode brush assembly also includes a stud, a fixing nut and two insulating nuts;

[0023] The lower end of the stud is fixed in the base, and the upper end is used to fix the conductive sheet; one end of the conductive sheet is overlapped in the limiting groove, and the other end is sleeved on the upper end of the stud; the two insulating nuts are sleeved on both ends of the conductive sheet at the upper end of the stud; the fixing nut is arranged on the top of the upper end of the stud to limit the insulating nut.

[0024] Further,

[0025] The width of the limiting groove of the conductive ring matches the width of the conductive sheet.

[0026] Further,

[0027] The base is provided with a level adjustment mechanism and a height adjustment mechanism; when the part to be plated is fixed in place, the coaxiality between the brush plating device and the part to be plated is ensured by adjusting the levelness and height of the base.

[0028] The advantages of the utility model are:

[0029] 1. The utility model does not need to disassemble the parts to be plated. The rotation of the brush plating device replaces the rotation of the workpiece, and the brush plating work of the parts for appearance repair can be performed in situ, which effectively avoids the constraints of insufficient operating space and safety of use. It is easy to carry, compact in size and simple to use.

[0030] 2. The size and shape of the brush-plating anode of the utility model can be replaced according to the parts to be plated, and the in-situ repair work of shaft parts of various sizes and specifications can be completed, and the versatility is strong.

[0031] 3. The utility model drives the connecting bracket to brush-plate the parts at a uniform speed through a motor, and two brush-plating units are symmetrically arranged on the outer wall of the connecting bracket, which reduces manual participation, ensures uniform plating, improves work efficiency, and improves the quality and efficiency of aviation equipment repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 : Schematic diagram of the structure of the brush plating device;

[0033] Figure 2 : Schematic diagram of brush plating power supply connection;

[0034] Figure 3: Schematic diagram of the structure of the adjusting bolt and the adjusting spring;

[0035] Figure 4 : Schematic diagram of tightening nut and brush plating anode structure;

[0036] Figure 5 : Schematic diagram of the explosion structure of the connecting bracket, conductive ring and rolling bearing;

[0037] In the figure: 1-base; 2-stud; 3-conductive sheet; 4-insulating nut; 5-fixing nut; 6-motor bracket; 7-motor; 8-coupling; 9-bearing bracket; 10-rolling bearing; 11-conductive ring; 12-connecting bracket; 13-adjusting bolt; 14-adjusting spring; 15-tightening nut; 16-brush plating anode; 17-parts to be plated; 121-rotating shaft; 122-small diameter part; 123-large diameter part. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figure 1 , Figure 2 The electric brush plating device for in-situ repair of shaft parts shown in the figure comprises a base, a brush plating assembly, a motor assembly and an anode brush assembly;

[0040] The base 1 is provided with a level adjustment mechanism and a height adjustment mechanism; when the part 17 to be plated is fixed in place, the coaxiality between the brush plating device and the part 17 to be plated is ensured by adjusting the levelness and height of the base.

[0041] The brush plating assembly includes a bearing bracket 9, a rolling bearing 10, a conductive ring 11, a connecting bracket 12 and a plurality of brush plating units; the bearing bracket 9 is fixed on the base 1, and the rolling bearing 10 is interference fit in the bearing bracket 9;

[0042] In this embodiment, the rolling bearing 10 is cooled by liquid nitrogen and then pressed into the bearing bracket 9 .

[0043] like Figure 5As shown, the connecting bracket 12 is a coaxial cylinder with increasing diameters, which includes a rotating shaft 121, a small diameter portion 122 and a large diameter portion 123; the rolling bearing 10 is sleeved on the rotating shaft 121; the small diameter portion 122 is sleeved with a conductive ring 11, and a circle of limiting grooves is provided on the outer wall of the conductive ring 11, which is used to limit the conductive sheet 3 to ensure that the conductive sheet 3 and the rotating conductive ring 11 have good contact without gaps; the width of the limiting groove of the conductive ring 11 matches the width of the conductive sheet. The large diameter portion 123 is a hollow cylinder, and the inner diameter of the large diameter portion 123 is larger than the outer diameter of the part to be plated 17, ensuring that the part to be plated 17 can coaxially extend into the large diameter portion 123;

[0044] like Figure 1 As shown, the motor assembly includes a motor bracket 6, a motor 7 and a coupling 8; the motor 7 is fixed to the base 1 through the motor bracket 6; the coupling 8 coaxially connects the output shaft of the motor 7 and the rotating shaft 121 of the connecting bracket 12, so that the motor 7 stably drives the connecting bracket 12 to rotate;

[0045] like Figure 1 , Figure 2 , Figure 3 As shown, a plurality of brush plating units are provided on the large diameter portion 123, and the brush plating units include a brush plating anode 16, an adjusting bolt 13 and an adjusting spring 14;

[0046] The tail of the adjusting bolt 13 axially passes through the outer wall of the large diameter portion 123, and an adjusting spring 14 is sleeved on the tail of the adjusting bolt, and the two ends of the adjusting spring 14 respectively abut against the brush-plated anode 16 and the inner wall of the large diameter portion 123 to prevent the brush-plated anode 16 from contacting the large diameter portion 123;

[0047] There are two brush plating units in this embodiment, and the large diameter portion 123 is correspondingly provided with two mounting holes; the adjusting bolts 13 of the two brush plating units pass symmetrically through the mounting holes and are arranged on the outer wall of the large diameter portion 123, and the axes of the two adjusting bolts 13 are coplanar, so as to ensure uniform brush plating of the part 17 to be plated;

[0048] The brush plating anode 16 is an arc surface, which is equal to the arc of the part to be plated 17, ensuring uniform brush plating; preferably, in order to ensure the versatility of aviation equipment fasteners, this embodiment designs brush plating anodes 16 of different sizes according to the size of the actual fasteners (M2 to M39) for use in order to meet the brush plating requirements of parts to be plated 17 of different sizes. A tightening nut 15 is welded at the center of the outer arc surface of the brush plating anode 16 to ensure that the brush plating anode 16 is uniformly stressed; the brush plating anode 16 is connected to the tail end of the adjusting bolt 13 through the tightening nut 15 and contacts the adjusting spring 14, and the adjusting spring 14 presses the brush plating anode 16 tightly against the outer wall of the part to be plated 17; the inner arc surface of the brush plating anode 16 is dipped in the brush plating solution, and the rotation of the motor drives the brush plating anode 16 to rotate evenly and brush plate the outer wall of the part to be plated 17, ensuring uniform brush plating.

[0049] like Figure 1, Figure 2 As shown, the anode brush assembly includes a conductive sheet 3, a stud 2, a fixing nut 5 and two insulating nuts 4; the conductive sheet 3 is overlapped in the limiting groove and is connected to the conductive ring 11 to prevent the conductive sheet 3 from being misplaced; the conductive sheet 3 is connected to the anode of the brush plating power supply, and the part to be plated 17 is connected to the cathode of the brush plating power supply to ensure that the brush plating anode 16 is energized and can perform brush plating on the outer wall of the part to be plated 17;

[0050] The lower end of the stud 2 is fixed in the base 1, and the upper end is used to fix the conductive sheet 3; one end of the conductive sheet 3 is overlapped in the limiting groove, and the other end is sleeved on the upper end of the stud 2; two insulating nuts 4 are sleeved on both ends of the conductive sheet 3 at the upper end of the stud 2; the fixing nut 5 is arranged on the top of the upper end of the stud 2 to limit the insulating nut 4 and ensure that the conductive sheet 3 is pressed on the conductive ring 11.

[0051] Method for brush plating using the electric brush plating device in this embodiment:

[0052] 1. Select two brush plating anodes 16 dipped in brush plating solution that match the outer wall size of the part to be plated 17, pass two adjusting bolts 13 through the large diameter part 123 and the adjusting spring 14 from both sides of the large diameter part 123 in sequence, and fix them to the brush plating anodes 16 by tightening the nuts 15;

[0053] 2. Adjust the height and levelness of the base 1 so that the large diameter portion 123 is aligned with the part to be plated 17; then pull the two adjusting bolts 13 outward at the same time to compress the adjusting spring 14 so that the two brush plating anodes 16 open;

[0054] 3. Move the brush plating device to allow the fixed part 17 to pass through the large diameter portion 123, and then loosen the adjusting bolt 13; driven by the adjusting spring 14, the brush plating anode 16 is completely attached to the part 17 to be plated;

[0055] 4. Such as Figure 2 As shown, the conductive sheet 3 is connected to the anode of the power supply through a wire, and the part to be plated 17 is connected to the cathode of the power supply through a wire;

[0056] 5. Turn on the power of the motor 7, and the motor drives the entire connecting bracket 12 to rotate clockwise (counterclockwise) at a uniform speed. At this time, the brush plating anode 16 covered with the brush plating solution rotates and wipes the surface of the part to be plated 17, and the metal ions in the brush plating solution are discharged and crystallized on the surface of the part to be plated 17, forming a uniform plating layer on the surface of the part to be plated 17.

[0057] The above description is only a specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present utility model, and these modifications or substitutions should be included in the protection scope of the present utility model.

Claims

1. An electric brush plating device for in-situ repair of shaft parts, characterized in that: It includes a base, a brush plating assembly, a motor assembly and an anode brush assembly; The brush plating assembly comprises a bearing bracket, a rolling bearing, a conductive ring, a connecting bracket and a plurality of brush plating units; the bearing bracket is fixed on the base, and the rolling bearing is interference-fitted in the bearing bracket; The connecting bracket is a coaxial cylinder with increasing diameters, which includes a rotating shaft, a small diameter part and a large diameter part; the rolling bearing is sleeved on the rotating shaft; the small diameter part is sleeved with a conductive ring, and a circle of limiting grooves is provided on the outer wall of the conductive ring; the large diameter part is a hollow cylinder, the inner diameter of the large diameter part is larger than the outer diameter of the part to be plated, and the part to be plated coaxially extends into the large diameter part; The motor assembly includes a motor and a coupling; the motor is fixed on the base; the coupling is coaxially connected to the output shaft of the motor and the rotating shaft of the connecting bracket, so that the motor assembly stably drives the connecting bracket to rotate; The large diameter portion is provided with a plurality of brush plating units, the brush plating units comprising a brush plating anode, an adjusting bolt and an adjusting spring; the tail of the adjusting bolt axially passes through the outer wall of the large diameter portion, and the adjusting spring is sleeved on the tail of the adjusting bolt, and the two ends of the adjusting spring respectively abut against the brush plating anode and the inner wall of the large diameter portion; The brush plating anode is an arc surface, and has the same arc as the part to be plated; the outer arc surface of the brush plating anode is fixed to the tail end of the adjustment spring, and the adjustment spring presses the brush plating anode tightly against the outer wall of the part to be plated; the inner arc surface of the brush plating anode is dipped in the brush plating solution, and the rotation of the motor drives the brush plating anode to rotate and brush plate the outer wall of the part to be plated; The anode brush assembly includes a conductive sheet; the conductive sheet is overlapped in the limiting groove and is connected to the conductive ring; the conductive sheet is connected to the anode of the brush plating power supply, and the part to be plated is connected to the cathode of the brush plating power supply.

2. The brush plating device for in-situ repair of shaft parts according to claim 1 is characterized in that: A tightening nut is welded at the center of the outer arc surface of the brush-plated anode, and the brush-plated anode is connected to the tail end of the adjusting bolt through the tightening nut and contacts the adjusting spring.

3. The brush plating device for in-situ repair of shaft parts according to claim 1 or 2, characterized in that: There are two brush plating units, and the adjusting bolts of the two brush plating units pass symmetrically through the outer wall of the large diameter part, and the axes of the two adjusting bolts are coplanar.

4. The brush plating device for in-situ repair of shaft parts according to claim 1, characterized in that: The anode brush assembly also includes a stud, a fixing nut and two insulating nuts; The lower end of the stud is fixed in the base, and the upper end is used to fix the conductive sheet; one end of the conductive sheet is overlapped in the limiting groove, and the other end is sleeved on the upper end of the stud; the two insulating nuts are sleeved on both ends of the conductive sheet at the upper end of the stud; the fixing nut is arranged on the top of the upper end of the stud to limit the insulating nut.

5. The brush plating device for in-situ repair of shaft parts according to claim 4 is characterized in that: The width of the limiting groove of the conductive ring matches the width of the conductive sheet.

6. The brush plating device for in-situ repair of shaft parts according to claim 1, characterized in that: The base is provided with a level adjustment mechanism and a height adjustment mechanism; when the part to be plated is fixed in place, the coaxiality between the brush plating device and the part to be plated is ensured by adjusting the levelness and height of the base.

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