CN108950619B - Brush plating repair method for automobile engine connecting rod - Google Patents
Brush plating repair method for automobile engine connecting rod Download PDFInfo
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- CN108950619B CN108950619B CN201810955409.7A CN201810955409A CN108950619B CN 108950619 B CN108950619 B CN 108950619B CN 201810955409 A CN201810955409 A CN 201810955409A CN 108950619 B CN108950619 B CN 108950619B
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- 238000007747 plating Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008439 repair process Effects 0.000 title claims abstract description 25
- 238000009713 electroplating Methods 0.000 claims abstract description 141
- 238000007789 sealing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000001125 extrusion Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad plating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
- C25D17/12—Shape or form
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention belongs to the technical field of engine connecting rod repair, in particular to an automobile engine connecting rod electric brush plating repair method, wherein an electric brush plating repair device in the method comprises a base, a top cover, a bolt, a sealing ring, an electroplating brush, a rotating shaft, a roller, a rotating support shaft, supports, a sliding block, a spring, a fixed sleeve, a motor and a locking module; the method is also suitable for on-site temporary operation, can repair the inner hole of the workpiece to be plated in a short time without the assistance of a tool clamp, and is convenient to operate.
Description
Technical Field
The invention belongs to the technical field of engine connecting rod repair, and particularly relates to an automobile engine connecting rod brush plating repair method.
Background
The connecting rod of the engine is one of important parts on the engine, the failure of the connecting rod is mainly caused by abrasion and deformation, so that the dimensional requirement cannot be met, and therefore, the repair of the connecting rod is mainly to recover the matching dimension and the surface performance. The repair technology adopted at present is mainly used for repairing through brush plating.
Brush plating is a surface processing technique, which utilizes an electrochemical method to reduce metal ions into metal and deposit the metal ions on the surface of a metal or nonmetal product to form a smooth and compact metal covering layer meeting the requirements. With the development of science and technology and production, the field of the brush plating technology is wider and wider, and the requirement of people on the plating layer is higher and higher. At present, the application of metal coatings has spread to various production and research departments of economic activity, and has great significance in production practice.
Some technical schemes for repairing connecting rods by brush plating also appear in the prior art, for example, a Chinese patent with application number of 200910077394X discloses a device and a method for brush plating inner hole parts, which comprises a workpiece to be plated, a workpiece clamping and sealing device, a special plating pen for brush plating inner holes and a plating pen rotating device. The workpiece to be plated and the clamping sealing device form a container with an opening at the top, and in the plating process, the workpiece is a cathode and the plating pen is an anode.
The brush plating repair device in the technical scheme can realize electroplating treatment on the inner hole parts, but the axes of the special plating pen for brush plating the inner hole and the inner hole of the workpiece to be plated in the device can be aligned only by means of a tool clamp, the manufacturing period of the tool clamp is long, and different tool clamps need to be manufactured according to different workpieces to be plated, so that the period and the cost of electroplating processing are improved; and the device cannot be used in a more free environment due to the assistance of the tool clamp, so that the use range of the device is limited.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides an automobile engine connecting rod electric brush plating repair method, wherein an electric brush plating repair device in the method is characterized in that three supports are uniformly arranged on a cylindrical surface of a fixed sleeve, the other ends of the supports are rotatably connected with rollers through rotating support shafts, two ends of each rotating support shaft are fixedly connected in mounting holes of an upper sliding block and a lower sliding block, the sliding blocks are slidably connected in rectangular grooves on the supports, the axis of each rotating shaft is automatically coincided with the axis of an inner hole of a top cover, the axis of an electroplating brush is automatically coincided with the axis of the inner hole of a workpiece to be plated, and finally, the electroplating brush is enabled to uniformly coat electroplating solution on the inner wall of the workpiece to; the method is also suitable for on-site temporary operation, can repair the inner hole of the workpiece to be plated in a short time without the assistance of a tool clamp, and is convenient to operate.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an automobile engine connecting rod brush plating repair method, which comprises the following steps:
the method comprises the following steps: wiping the surface of an inner hole on the connecting rod by using absorbent cotton dipped with alcohol, and removing oil stains on the surface of the inner hole of the connecting rod;
step two: removing the oxide film on the surface of the inner hole of the connecting rod in the first step by using an activating solution;
step three: washing the surface of the inner hole of the connecting rod treated by the activating solution in the step two by using clear water;
step four: clamping the connecting rod cleaned and dried in the third step on an electric brush plating repairing device for repairing;
step five: clamping the connecting rod repaired in the fourth step on a special machine tool for processing so as to obtain a connecting rod meeting the standard size;
the brush plating repair device comprises a base, a top cover, a bolt and a sealing ring, wherein a group of workpieces to be plated are arranged between the upper edge of the base and the lower edge of the top cover, the upper edge of the base, the lower edge of the top cover and the workpieces to be plated are connected through the sealing ring, and the base is fixedly connected with the top cover through the bolt; the device comprises an electroplating brush, a rotating shaft, a roller, a rotating support shaft, a bracket, a sliding block, a spring, a fixed sleeve, a motor and a locking module, wherein the rotating shaft is fixedly connected with the electroplating brush and is used for supporting the rotation of the electroplating brush; the electroplating brush is arranged in a cylinder formed by the workpieces to be plated and is used for brushing electroplating solution on the inner wall of the round hole of the workpiece to be plated; the upper end of the rotating shaft is rotatably connected in the fixed sleeve; three supports are uniformly arranged on the cylindrical surface of the fixed sleeve, the upper ends of the supports are fixedly connected with a motor, and a rotating shaft of the motor is fixedly connected with the upper end of a rotating shaft; one end of the support is fixedly connected with the cylindrical surface of the fixed sleeve, and the other end of the support is rotatably connected with the roller through a rotating support shaft; two ends of the rotating support shaft are fixedly connected in the mounting holes of the upper sliding block and the lower sliding block; the sliding block is connected in the rectangular groove on the bracket in a sliding manner; a spring is arranged in the rectangular groove of the bracket, and a locking module is arranged above the bracket; the locking module is used for locking the sliding block; when the electroplating brush is used, a workpiece to be plated is positioned by the base and the top cover and locked by the bolts, so that clamping is realized, the electroplating brush can be placed inside a cylinder formed by the workpiece to be plated after three rollers on the bracket are extruded, the rollers on the bracket are completely bounced open, the sliding block is locked by the locking module, the axis of the rotating shaft and the axis of the inner hole of the top cover are automatically coincided, so that the axis of the electroplating brush and the axis of the inner hole of the workpiece to be plated are automatically coincided, the motor drives the electroplating brush to rotate through the rotating shaft, and finally, the electroplating solution is uniformly coated on the inner wall of the workpiece to be plated by the electroplating brush; the method is also suitable for on-site temporary operation, can repair the inner hole of the workpiece to be plated in a short time without the assistance of a tool clamp, and is convenient to operate.
Preferably, a pressure sensor is arranged in the rectangular groove of the bracket; one end of the pressure sensor is fixedly connected to the cylindrical surface of the fixed sleeve, and the other end of the pressure sensor is connected with one end of the spring in the rectangular groove of the bracket; when the device is used, after the rollers on the supports are completely bounced open, the controller compares the numerical values of the pressure sensors on the three supports, and when the numerical values of the three pressure sensors are the same, the sliding block is locked through the locking module, so that the stability of the electroplating brush during rotation is ensured; the locking time of the locking module is controlled by the pressure sensor, so that the positioning precision of the electroplating brush is higher, the thickness of the electroplating solution smeared by the electroplating brush is more uniform, and the size precision of the electroplating brush after electroplating is improved.
Preferably, the locking module comprises a friction block, an electromagnet, a guide rod and a spring; the upper end of the sliding block is fixedly connected with a friction block; an electromagnet is arranged above the friction block; the electromagnets are slidably arranged at the upper ends of the two guide rods; the lower end of the guide rod is fixedly connected in a cylindrical hole on the upper surface of the bracket, and a spring is arranged in the cylindrical hole on the bracket; when the device is used, after the roller on the bracket is completely bounced off, the controller compares the numerical values of the three pressure sensors and the numerical values are the same, the controller controls the electromagnet to be electrified, the electromagnet attracts the sliding block, the electromagnet moves downwards along the guide rod under the action of the electromagnetic force, the electromagnet extrudes the friction block, and then the electromagnet locks the sliding block through the friction force, so that the stability of the electroplating brush during rotation is ensured, the locking is automatically completed, the efficiency is high, errors generated in the manual operation process of the aligned position cannot occur, and the clamping precision is improved; after the electroplating is finished, the controller controls the electromagnet to be powered off, the electroplating brush can be taken out of the inner hole of the workpiece, and the operation is convenient.
Preferably, the friction block is a corrugated air cushion, an arc-shaped groove is formed in the upper end face of the friction block, and an air outlet hole is formed in the middle of the arc-shaped groove in the friction block; during the use, the electro-magnet circular telegram back, and then under the effect of electromagnetic force, the electro-magnet extrudees the clutch blocks, and the clutch blocks is compressed, and the gas in the clutch blocks is discharged in the gas outlet hole of upper end, and then produces the negative pressure between the up end of clutch blocks and the lower surface of electro-magnet, realizes the more stable laminating of clutch blocks and electro-magnet, finally guarantees the stability of electroplating brush when rotating, further improves the size precision after the electroplating of electroplating brush.
Preferably, the electroplating brush comprises an upper fixing plate, a lower fixing plate, a brush shell, bristles, an extrusion plate and a cylinder; the lower end of the rotating shaft is provided with a triangular prism, the upper end of a triangular prism section on the rotating shaft is fixedly connected with an upper fixing plate, and the lower end of the triangular prism section on the rotating shaft is fixedly connected with a lower fixing plate; three electric brush shells are uniformly arranged between the upper fixing plate and the lower fixing plate; the upper end of the electric brush shell is fixedly connected with the lower surface of the upper fixing plate, the lower end of the electric brush shell is fixedly connected with the upper surface of the lower fixing plate, one side of the opening of the electric brush shell is fixedly connected with the triangular prism of the rotating shaft in a segmented mode, bristles are arranged on the surface of the outer side of the closed end of the electric brush shell, and a group of water outlet holes are formed in the side wall of one side of the closed end of the electric; the extrusion plate is connected with the rotating shaft through the cylinder in a sliding manner in the electric brush shell; a water inlet hole is formed in the lower fixing plate; a pressure valve is arranged in the brush shell; the pressure valve is used for controlling the action of the cylinder; when in use, the electroplating solution is injected into the brush shell from the water inlet on the lower fixing plate, the opening pressure value of the pressure valve is set, when the motor drives the electroplating brush to rotate through the rotating shaft, when the pressure in the brush shell is smaller than the opening pressure value of the pressure valve, the pressure valve controls the cylinder rod of the cylinder to extend out, the cylinder pushes the extrusion plate to move, the extrusion plate extrudes the electroplating solution in the brush shell, the electroplating solution in the brush shell is sprayed on the brush hair from the water outlet hole on the brush shell, then the brush hair is smeared on the inner wall of the workpiece to be plated, when the pressure of the electroplating solution in the brush shell is larger than the opening pressure value of the pressure valve, the pressure valve controls the air cylinder to stop acting, and then realize that the electroplating brush can control the even blowout of electroplating solution in the electroplating brush, and then make the electroplating layer after the paining of electroplating brush more even, further improve the size precision after the electroplating brush is electroplated.
Preferably, the diameter of the water outlet hole on the side wall of the electric brush shell is between mm and mm; when the electric brush is used, the diameter of the water outlet hole in the side wall of the electric brush shell is set to be mm < - > mm, and the spraying amount of the electroplating solution is smaller, so that the sprayed electroplating solution is more uniform, and the spraying amount of the electroplating solution is easier to control.
The invention has the following beneficial effects:
1. the invention relates to an automobile engine connecting rod brush plating repair method, wherein an electric brush plating repair device in the method is characterized in that three supports are uniformly arranged on a cylindrical surface of a fixed sleeve, the other ends of the supports are rotatably connected with rollers through rotating support shafts, the two ends of each rotating support shaft are fixedly connected into mounting holes of an upper slide block and a lower slide block, the slide blocks are slidably connected into rectangular grooves on the supports, the axis of each rotating shaft and the axis of an inner hole of a top cover are automatically coincided, the axis of an electroplating brush and the axis of the inner hole of a workpiece to be plated are automatically coincided, and finally, the electroplating solution is uniformly coated on the inner wall of the workpiece to be plated by the electroplating brush; the method is also suitable for on-site temporary operation, can repair the inner hole of the workpiece to be plated in a short time without the assistance of a tool clamp, and is convenient to operate.
2. According to the method for repairing the automobile engine connecting rod by the brush electroplating, the pressure sensor is arranged in the rectangular groove of the bracket, so that the positioning precision of the electroplating brush is higher, the thickness of an electroplating solution coated on the electroplating brush is more uniform, and the size precision of the electroplating brush after electroplating is improved.
3. According to the brush plating repair method for the automobile engine connecting rod, the electromagnet is arranged above the friction block and is slidably mounted at the upper ends of the two guide rods, so that the electromagnet locks the sliding block through friction force, the stability of the electroplating brush during rotation is guaranteed, the locking is automatically completed, the efficiency is high, errors of the aligned position in the manual operation process cannot occur, and the clamping precision is improved; after the electroplating is finished, the controller controls the electromagnet to be powered off, the electroplating brush can be taken out of the inner hole of the workpiece, and the operation is convenient.
4. The invention relates to an automobile engine connecting rod brush plating repair method, wherein a brush plating repair device in the method is connected in a brush shell in a sliding way through an extrusion plate, and the extrusion plate is connected with a rotating shaft through a cylinder; the inside of brush casing sets up the pressure valve, realizes that the electroplating brush can control the even blowout of electroplating solution in the electroplating brush, and then makes the electroplating layer after paining of electroplating brush more even, further improves the size precision after the electroplating brush is electroplated.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a front view of the brush plating restoration apparatus of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 5 is an enlarged view at B in FIG. 2;
FIG. 6 is a cross-sectional view taken at C-C of FIG. 3;
in the figure: the electroplating device comprises a base 11, a top cover 12, a bolt 13, a sealing ring 14, a workpiece to be plated 15, an electroplating brush 2, an upper fixing plate 21, a lower fixing plate 22, a brush shell 23, bristles 24, an extrusion plate 25, a cylinder 26, a rotating shaft 3, a support 4, a roller 41, a rotating support shaft 42, a sliding block 43, a pressure sensor 44, a fixing sleeve 5, a motor 6, a locking module 7, a friction block 71, an arc-shaped groove 711, an air outlet 712, an electromagnet 72 and a guide rod 73.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in FIGS. 1 to 6, the method for repairing the connecting rod of the automobile engine by brush plating comprises the following steps:
the method comprises the following steps: wiping the surface of an inner hole on the connecting rod by using absorbent cotton dipped with alcohol, and removing oil stains on the surface of the inner hole of the connecting rod;
step two: removing the oxide film on the surface of the inner hole of the connecting rod in the first step by using an activating solution;
step three: washing the surface of the inner hole of the connecting rod treated by the activating solution in the step two by using clear water;
step four: clamping the connecting rod cleaned and dried in the third step on an electric brush plating repairing device for repairing;
step five: clamping the connecting rod repaired in the fourth step on a special machine tool for processing so as to obtain a connecting rod meeting the standard size;
the brush plating repair device comprises a base 11, a top cover 12, a bolt 13 and a sealing ring 14, wherein a group of workpieces 15 to be plated are arranged between the upper edge of the base 11 and the lower edge of the top cover 12, the upper edge of the base 11, the lower edge of the top cover 12 and the workpieces 15 to be plated are connected through the sealing ring 14, and the base 11 and the top cover 12 are fixedly connected through the bolt 13; the device comprises an electroplating brush 2, a rotating shaft 3, a roller 41, a rotating support shaft 42, a bracket 4, a sliding block 43, a spring, a fixed sleeve 5, a motor 6 and a locking module 7, wherein the rotating shaft 3 is fixedly connected with the electroplating brush 2, and the rotating shaft 3 is used for supporting the rotation of the electroplating brush 2; the electroplating brush 2 is arranged inside a cylinder formed by the workpieces 15 to be plated, and the electroplating brush 2 is used for brushing electroplating solution on the inner wall of a round hole of the workpiece 15 to be plated; the upper end of the rotating shaft 3 is rotatably connected in the fixed sleeve 5; three supports 4 are uniformly arranged on the cylindrical surface of the fixed sleeve 5, the upper ends of the supports 4 are fixedly connected with a motor 6, and a rotating shaft of the motor 6 is fixedly connected with the upper end of the rotating shaft 3; one end of the bracket 4 is fixedly connected with the cylindrical surface of the fixed sleeve 5, and the other end of the bracket 4 is rotatably connected with the roller 41 through a rotating support shaft 42; two ends of the rotating support shaft 42 are fixedly connected in mounting holes of the upper slide block 43 and the lower slide block 43; the sliding block 43 is connected in a rectangular groove on the bracket 4 in a sliding manner; a spring is arranged in the rectangular groove of the support 4, and a locking module 7 is arranged above the support 4; the locking module 7 is used for locking the sliding block 43; when the electroplating brush is used, a workpiece 15 to be plated is positioned by the base 11 and the top cover 12 and locked by the bolt 13, so that clamping is realized, the three rollers 41 on the bracket 4 are extruded, the electroplating brush 2 can be placed inside a cylinder formed by the workpiece 15 to be plated, after the rollers 41 on the bracket 4 are completely bounced open, the sliding block 43 is locked by the locking module 7, the axis of the rotating shaft 3 is automatically overlapped with the axis of the inner hole of the top cover 12, so that the axis of the electroplating brush 2 is automatically overlapped with the axis of the inner hole of the workpiece 15 to be plated, the motor 6 drives the electroplating brush 2 to rotate by the rotating shaft 3, and finally, the electroplating brush 2 is ensured to uniformly coat an electroplating solution on the inner wall of the workpiece 15 to be plated; the mode is also suitable for on-site temporary operation, the inner hole of the workpiece 15 to be plated can be repaired in a short time without the assistance of a tool clamp, and the operation is convenient.
As an embodiment of the present invention, a pressure sensor 44 is disposed in the rectangular groove of the bracket 4; one end of the pressure sensor 44 is fixedly connected to the cylindrical surface of the fixed sleeve 5, and the other end of the pressure sensor 44 is connected with one end of the spring in the rectangular groove of the bracket 4; when the device is used, after the rollers 41 on the supports 4 are completely bounced open, the controller compares the numerical values of the pressure sensors 44 on the three supports 4, and when the numerical values of the three pressure sensors 44 are the same, the sliding block 43 is locked through the locking module 7, so that the stability of the electroplating brush 2 in rotation is ensured; the locking time of the locking module 7 is controlled by the pressure sensor 44, so that the positioning precision of the electroplating brush 2 is higher, the thickness of the electroplating solution smeared by the electroplating brush 2 is more uniform, and the size precision of the electroplating brush 2 is improved.
As an embodiment of the present invention, the locking module 7 includes a friction block 71, an electromagnet 72, a guide rod 73, and a spring; the upper end of the sliding block 43 is fixedly connected with a friction block 71; an electromagnet 72 is arranged above the friction block 71; the electromagnet 72 is slidably mounted at the upper ends of the two guide rods 73; the lower end of the guide rod 73 is fixedly connected in a cylindrical hole on the upper surface of the bracket 4, and a spring is arranged in the cylindrical hole on the bracket 4; when the device is used, after the roller 41 on the bracket 4 is completely bounced off, the controller compares the numerical values of the three pressure sensors 44 and the numerical values are the same, the controller controls the electromagnet 72 to be electrified, the electromagnet 72 attracts the sliding block 43, the electromagnet 72 moves downwards along the guide rod 73 under the action of electromagnetic force, the electromagnet 72 extrudes the friction block 71, the electromagnet 72 locks the sliding block 43 through the friction force, the stability of the electroplating brush 2 in rotation is ensured, the locking is automatically completed, the efficiency is high, errors in the manual operation process of the aligned position cannot occur, and the clamping precision is improved; after the electroplating is finished, the controller controls the electromagnet 72 to be powered off, so that the electroplating brush 2 can be taken out of the inner hole of the workpiece, and the operation is convenient.
As an embodiment of the present invention, the friction block 71 is a corrugated air cushion, an arc groove 711 is disposed on an upper end surface of the friction block 71, and an air outlet 712 is disposed in the middle of the arc groove 711 on the friction block 71; when the electroplating brush is used, after the electromagnet 72 is electrified, the electromagnet 72 extrudes the friction block 71 under the action of electromagnetic force, the friction block 71 is compressed, gas in the friction block 71 is discharged from the gas outlet 712 at the upper end, negative pressure is generated between the upper end surface of the friction block 71 and the lower surface of the electromagnet 72, the friction block 71 and the electromagnet 72 are attached more stably, the stability of the electroplating brush 2 in rotation is finally ensured, and the size precision of the electroplating brush 2 after electroplating is further improved.
As an embodiment of the present invention, the electroplating brush 2 includes an upper fixing plate 21, a lower fixing plate 22, a brush housing 23, bristles 24, a pressing plate 25, and a cylinder 26; the lower end of the rotating shaft 3 is provided with a triangular prism, the upper end of a triangular prism section on the rotating shaft 3 is fixedly connected with an upper fixing plate 21, and the lower end of the triangular prism section on the rotating shaft 3 is fixedly connected with a lower fixing plate 22; three brush shells 23 are uniformly arranged between the upper fixing plate 21 and the lower fixing plate 22; the upper end of the electric brush shell 23 is fixedly connected with the lower surface of the upper fixing plate 21, the lower end of the electric brush shell 23 is fixedly connected with the upper surface of the lower fixing plate 22, one side of the opening of the electric brush shell 23 is fixedly connected with the triangular prism of the rotating shaft 3 in a segmented manner, the outer side surface of the closed end of the electric brush shell 23 is provided with bristles 24, and the side wall of one side of the closed end of the electric brush shell 23 is provided with a group of water outlet holes; the extrusion plate 25 is connected in the brush shell 23 in a sliding way, and the extrusion plate 25 is connected with the rotating shaft 3 through a cylinder 26; a water inlet hole is formed in the lower fixing plate 22; a pressure valve is arranged inside the brush shell 23; the pressure valve is used for controlling the action of the air cylinder 26; when the electroplating brush is used, electroplating solution is injected into the brush shell 23 from the water inlet on the lower fixing plate 22, the opening pressure value of the pressure valve is set, when the motor 6 drives the electroplating brush 2 to rotate through the rotating shaft 3, when the pressure in the brush shell 23 is smaller than the opening pressure value of the pressure valve, the cylinder rod of the pressure valve control cylinder 26 extends out, the cylinder 26 pushes the extrusion plate 25 to move, the extrusion plate 25 extrudes the electroplating solution in the brush shell 23, the electroplating solution in the brush shell 23 is sprayed on the brush bristles 24 from the water outlet holes in the brush shell 23, and then the brush bristles 24 are coated on the inner wall of the workpiece 15 to be plated, when the pressure of the electroplating solution in the brush shell 23 is larger than the opening pressure value of the pressure valve, the pressure valve control cylinder 26 stops acting, so that the electroplating brush 2 can control the electroplating solution in the electroplating brush 2 to be uniformly sprayed, and further the coated electroplating layer of the electroplating brush, further improving the dimensional accuracy of the electroplated brush 2.
As an embodiment of the present invention, the diameter of the water outlet hole on the side wall of the brush housing 23 is 0.2mm-1.0 mm; when the electroplating device is used, the diameter of the water outlet hole in the side wall of the electric brush shell 23 is set to be 0.2mm-1.0mm, and the spraying amount of the electroplating solution is small, so that the sprayed electroplating solution is more uniform, and the spraying amount of the electroplating solution is easier to control.
When the device is used, a workpiece 15 to be plated is positioned by the base 11 and the top cover 12 and locked by the bolts 13, so that clamping is realized, the three rollers 41 on the bracket 4 are extruded, the electroplating brush 2 can be placed in a cylinder formed by the workpiece 15 to be plated, the rollers 41 on the bracket 4 are completely bounced open, the controller compares the numerical values of the pressure sensors 44 on the three brackets 4, when the numerical values of the three pressure sensors 44 are the same, the controller controls the electromagnet 72 to be electrified, the electromagnet 72 attracts the sliding block 43, the electromagnet 72 moves downwards along the guide rod 73 under the action of electromagnetic force, the electromagnet 72 extrudes the friction block 71, the friction block 71 is compressed, gas in the friction block 71 is discharged from the gas outlet 712 at the upper end, so that negative pressure is generated between the upper end face of the friction block 71 and the lower surface of the electromagnet 72, and the friction block 71 and the electromagnet 72 are attached more stably, the electromagnet 72 locks the sliding block 43 through the friction block 71, so that the stability of the electroplating brush 2 during rotation is ensured, the locking is automatically completed, the efficiency is high, errors of the aligned position in the manual operation process cannot occur, and the clamping precision is improved; after the electroplating is finished, the controller controls the electromagnet 72 to be powered off, so that the electroplating brush 2 can be taken out of the inner hole of the workpiece, and the operation is convenient; the automatic coincidence of the axis of the rotating shaft 3 and the axis of the inner hole of the top cover 12 is realized, and further the automatic coincidence of the axis of the electroplating brush 2 and the axis of the inner hole of the workpiece 15 to be electroplated is realized; when the motor 6 drives the electroplating brush 2 to rotate through the rotating shaft 3, when the pressure in the brush shell 23 is smaller than the opening pressure value of the pressure valve, the cylinder rod of the pressure valve control cylinder 26 extends out, the cylinder 26 pushes the extrusion plate 25 to move, the extrusion plate 25 extrudes the electroplating solution in the brush shell 23, the electroplating solution in the brush shell 23 is sprayed on the brush bristles 24 from the water outlet holes in the brush shell 23 and then coated on the inner wall of the workpiece 15 to be plated by the brush bristles 24, when the pressure of the electroplating solution in the brush shell 23 is larger than the opening pressure value of the pressure valve, the pressure valve control cylinder 26 stops acting, so that the electroplating brush 2 can control the electroplating solution in the electroplating brush 2 to be uniformly sprayed, and further the electroplating brush 2 uniformly coats the electroplating solution on the inner wall of the workpiece 15 to be plated, the mode is also suitable for on-site temporary operation, the inner hole of the workpiece 15 to be plated can be repaired in a short time without the assistance of a tool clamp, and the operation is convenient.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The method for repairing the connecting rod of the automobile engine by brush plating is characterized by comprising the following steps of:
the method comprises the following steps: wiping the surface of an inner hole on the connecting rod by using absorbent cotton dipped with alcohol, and removing oil stains on the surface of the inner hole of the connecting rod;
step two: removing the oxide film on the surface of the inner hole of the connecting rod in the first step by using an activating solution;
step three: washing the surface of the inner hole of the connecting rod treated by the activating solution in the step two by using clear water;
step four: clamping the connecting rod cleaned and dried in the third step on an electric brush plating repairing device for repairing;
step five: clamping the connecting rod repaired in the fourth step on a special machine tool for processing so as to obtain a connecting rod meeting the standard size;
the brush plating repair device comprises a base (11), a top cover (12), a bolt (13) and a sealing ring (14), wherein a group of workpieces to be plated (15) are arranged between the upper edge of the base (11) and the lower edge of the top cover (12), the upper edge of the base (11), the lower edge of the top cover (12) and the workpieces to be plated (15) are connected through the sealing ring (14), and the base (11) and the top cover (12) are fixedly connected through the bolt (13); the electroplating brush comprises an electroplating brush (2), a rotating shaft (3), a roller (41), a rotating support shaft (42), a bracket (4), a sliding block (43), a spring, a fixed sleeve (5), a motor (6) and a locking module (7), wherein the rotating shaft (3) is fixedly connected with the electroplating brush (2), and the rotating shaft (3) is used for supporting the rotation of the electroplating brush (2); the electroplating brush (2) is arranged inside a cylinder formed by the workpieces (15) to be plated, and the electroplating brush (2) is used for brushing electroplating solution on the inner wall of a round hole of the workpiece (15) to be plated; the upper end of the rotating shaft (3) is rotatably connected in the fixed sleeve (5); three supports (4) are uniformly arranged on the cylindrical surface of the fixed sleeve (5), the upper ends of the supports (4) are fixedly connected with a motor (6), and a rotating shaft of the motor (6) is fixedly connected with the upper end of the rotating shaft (3); one end of the support (4) is fixedly connected with the cylindrical surface of the fixed sleeve (5), and the other end of the support (4) is rotatably connected with the roller (41) through a rotating support shaft (42); two ends of the rotating support shaft (42) are fixedly connected in mounting holes of the upper sliding block (43) and the lower sliding block (43); the sliding block (43) is connected in a rectangular groove on the bracket (4) in a sliding manner; a spring is arranged in the rectangular groove of the support (4), and a locking module (7) is arranged above the support (4); the locking module (7) is used for locking the sliding block (43);
a pressure sensor (44) is arranged in the rectangular groove of the bracket (4); one end of the pressure sensor (44) is fixedly connected to the cylindrical surface of the fixed sleeve (5), and the other end of the pressure sensor (44) is connected with one end of the spring in the rectangular groove of the bracket (4);
the locking module (7) comprises a friction block (71), an electromagnet (72), a guide rod (73) and a spring; the upper end of the sliding block (43) is fixedly connected with a friction block (71); an electromagnet (72) is arranged above the friction block (71); the electromagnet (72) is arranged at the upper ends of the two guide rods (73) in a sliding manner; the lower end of the guide rod (73) is fixedly connected in a cylindrical hole on the upper surface of the bracket (4), and a spring is arranged in the cylindrical hole on the bracket (4);
the friction block (71) is a corrugated air cushion, an arc-shaped groove (711) is formed in the upper end face of the friction block (71), and an air outlet (712) is formed in the middle of the arc-shaped groove (711) in the friction block (71);
the electroplating brush (2) comprises an upper fixing plate (21), a lower fixing plate (22), a brush shell (23), brush bristles (24), an extrusion plate (25) and a cylinder (26); the lower end of the rotating shaft (3) is arranged to be a triangular prism, the upper end of a triangular prism section on the rotating shaft (3) is fixedly connected with an upper fixing plate (21), and the lower end of the triangular prism section on the rotating shaft (3) is fixedly connected with a lower fixing plate (22); three electric brush shells (23) are uniformly arranged between the upper fixing plate (21) and the lower fixing plate (22); the upper end of the electric brush shell (23) is fixedly connected with the lower surface of the upper fixing plate (21), the lower end of the electric brush shell (23) is fixedly connected with the upper surface of the lower fixing plate (22), one side of an opening of the electric brush shell (23) is fixedly connected with the triangular prism of the rotating shaft (3) in a segmented mode, bristles (24) are arranged on the outer side surface of the closed end of the electric brush shell (23), and a group of water outlet holes are formed in the side wall of one side of the closed end of the electric brush shell (23); the extrusion plate (25) is in sliding connection in the electric brush shell (23), and the extrusion plate (25) is connected with the rotating shaft (3) through a cylinder (26); a water inlet hole is formed in the lower fixing plate (22); a pressure valve is arranged inside the electric brush shell (23); the pressure valve is used for controlling the action of the air cylinder (26);
the diameter of a water outlet hole on the side wall of the electric brush shell (23) is 0.2mm-1.0 mm;
when the device is used, a workpiece (15) to be plated is positioned through the base (11) and the top cover (12), the bolt (13) is locked, clamping is further achieved, the three rollers (41) on the support (4) are extruded, the electroplating brush (2) can be placed inside a cylinder formed by the workpiece (15) to be plated, the rollers (41) on the support (4) are completely bounced open, the controller compares the numerical values of the pressure sensors (44) on the three supports (4), when the numerical values of the three pressure sensors (44) are the same, the controller controls the electromagnet (72) to be electrified, the electromagnet (72) attracts the sliding block (43), the electromagnet (72) moves downwards along the guide rod (73) under the action of electromagnetic force, the electromagnet (72) extrudes the friction block (71), the friction block (71) is compressed, and gas in the friction block (71) is discharged from a gas outlet (712) at the upper end, negative pressure is generated between the upper end face of the friction block (71) and the lower surface of the electromagnet (72), the friction block (71) and the electromagnet (72) are attached more stably, the electromagnet (72) locks the sliding block (43) through the friction block (71), stability of the electroplating brush (2) during rotation is guaranteed, locking is automatically completed, efficiency is high, errors of the aligned position in the manual operation process cannot occur, and clamping accuracy is improved; after the electroplating is finished, the controller controls the electromagnet (72) to be powered off, so that the electroplating brush (2) can be taken out of the inner hole of the workpiece, and the operation is convenient; the automatic coincidence of the axis of the rotating shaft (3) and the axis of the inner hole of the top cover (12) is realized, and further the automatic coincidence of the axis of the electroplating brush (2) and the axis of the inner hole of the workpiece (15) to be plated is realized; electroplating solution is injected into the brush shell (23) from a water inlet on the lower fixing plate (22), the opening pressure value of the pressure valve is set, the motor (6) drives the electroplating brush (2) to rotate through the rotating shaft (3), when the pressure in the brush shell (23) is smaller than the opening pressure value of the pressure valve, a cylinder rod of the pressure valve control cylinder (26) extends out, the cylinder (26) pushes the extrusion plate (25) to move, the extrusion plate (25) extrudes the electroplating solution in the brush shell (23), the electroplating solution in the brush shell (23) is sprayed on the bristles (24) from a water outlet hole on the brush shell (23), and then is coated on the inner wall of a workpiece to be plated (15) by the bristles (24), when the pressure of the electroplating solution in the brush shell (23) is larger than the opening pressure value of the pressure valve, the pressure valve control cylinder (26) stops, and further the electroplating brush (2) can control the electroplating solution in the electroplating brush (2) to be uniformly sprayed out, and then the electroplating brush (2) uniformly coats the electroplating solution on the inner wall of the workpiece (15) to be plated, the mode is also suitable for on-site temporary operation, the inner hole of the workpiece (15) to be plated can be repaired in a short time without the assistance of a tool clamp, and the operation is convenient.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955409.7A CN108950619B (en) | 2018-08-21 | 2018-08-21 | Brush plating repair method for automobile engine connecting rod |
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| CN201810955409.7A CN108950619B (en) | 2018-08-21 | 2018-08-21 | Brush plating repair method for automobile engine connecting rod |
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| CN108950619A CN108950619A (en) | 2018-12-07 |
| CN108950619B true CN108950619B (en) | 2020-12-08 |
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| CN111172568B (en) * | 2020-01-22 | 2023-06-06 | 鞍钢蒂森克虏伯汽车钢有限公司 | Bearing boring wear repairing device and method |
| CN118374861B (en) * | 2024-06-25 | 2024-10-15 | 托伦斯半导体设备启东有限公司 | Full-automatic nickel plating brush for semiconductor etching reaction chamber |
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| CN101514468A (en) * | 2009-02-19 | 2009-08-26 | 中国人民解放军装甲兵工程学院 | Device and method for inner bore type component brush plating |
| CN205352254U (en) * | 2016-01-12 | 2016-06-29 | 内蒙古包钢钢联股份有限公司 | Body axis centring means |
| CN107542210A (en) * | 2016-06-29 | 2018-01-05 | 黑龙江省康格尔科技有限公司 | One kind energy-conservation load-bearing concrete building block |
| CN107553023A (en) * | 2017-10-24 | 2018-01-09 | 无锡智谷锐拓技术服务有限公司 | A kind of large-scale pipeline inwall welding tooling |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514468A (en) * | 2009-02-19 | 2009-08-26 | 中国人民解放军装甲兵工程学院 | Device and method for inner bore type component brush plating |
| CN205352254U (en) * | 2016-01-12 | 2016-06-29 | 内蒙古包钢钢联股份有限公司 | Body axis centring means |
| CN107542210A (en) * | 2016-06-29 | 2018-01-05 | 黑龙江省康格尔科技有限公司 | One kind energy-conservation load-bearing concrete building block |
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Effective date of registration: 20231201 Address after: 130028 Advanced Machinery Manufacturing Industrial Park (east of Changbai Road), Lvyuan Economic Development Zone, Changchun City, Jilin Province Patentee after: JILIN JIERUI AUTO PARTS MANUFACTURING Co.,Ltd. Address before: 237000 sanshanpu street, sanshanpu Town, Jin'an District, Lu'an City, Anhui Province Patentee before: Ren Caiyin |
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