CN112705447A - Method and apparatus for friction coating solid lubricant on high hard surface - Google Patents
Method and apparatus for friction coating solid lubricant on high hard surface Download PDFInfo
- Publication number
- CN112705447A CN112705447A CN202011403953.4A CN202011403953A CN112705447A CN 112705447 A CN112705447 A CN 112705447A CN 202011403953 A CN202011403953 A CN 202011403953A CN 112705447 A CN112705447 A CN 112705447A
- Authority
- CN
- China
- Prior art keywords
- sliding table
- solid lubricant
- brush
- hard surface
- processed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
Abstract
The invention discloses a method and a device for friction coating of a solid lubricant on a high-hardness surface. The solid lubricant bar material of the invention is rubbed with the high hard surface to generate the particle solid lubricant, and the particle solid lubricant, the carbon fiber powder and the distilled water mixture are extruded and adhered on the high hard surface and in the microstructure during the rubbing process, and a filler layer is formed on the high hard surface. The invention utilizes the high heat conductivity of the solid lubricant to improve the heat dissipation effect of the workpiece with the high hard surface, and the filler layer increases the surface area of the high hard surface, thereby improving the wetting, heat conduction and heat dissipation performance of the high hard surface; further, if the method of the invention is adopted to coat the solid lubricant on the cutter by using the soft material, the edge can be sharpened, and the cutting performance of the cutter can be improved.
Description
Technical Field
The invention belongs to the technical field of performance optimization of high-hardness (HRC is more than 50) surfaces, and particularly relates to a method and a device for friction coating of a solid lubricant on a high-hardness surface.
Background
The micro-structure of the front tool face can reduce friction and resistance and improve the wear resistance of the tool so as to prolong the service life of the tool. The microstructure on the surface of the cutter can change the cutting performance of the cutter in processing, and the surface of the cutter is continuously coated with metal particles, so that the surface characteristic of the cutter can be further improved. In industrial production, a cutting tool has great influence on product quality, the requirement on part precision is continuously improved along with the continuous development of the modern machining industry, and new challenges are provided for the machining quality and efficiency of the tool.
At present, in the related art, there is no method and apparatus for coating a soft metal on a high hard surface by rubbing the soft metal with the high hard surface, and for example, the patent application No. 201810316934.4 provides a method for implanting carbon fibers on a surface of an object, preparing a polyacrylonitrile-based carbon fiber synthetic solution, and implanting the polyacrylonitrile-based carbon fiber synthetic solution on the surface of the object using a spraying device. The method has low carbon fiber implantation efficiency and high price. For example, patent application No. 201711232276.2 discloses a method for preparing a hydrophilic lubricating coating on the surface of a material, which is characterized in that a metal catalyst is added into a polymer material, a ceramic material or an alloy material, and a composite material containing the metal catalyst is prepared by a thermosetting or hot press molding method; immersing the composite material into a hydrogel monomer solution for polymerization to obtain the composite material with a hydrogel lubricating film growing on the surface in situ; the metal catalyst is one or more of silver powder, zinc powder, iron powder, chromium powder and manganese powder; the hydrogel monomer solution contains an initiator, the initiator is one or two of potassium persulfate and ammonium persulfate, the method causes certain chemical pollution, and the preparation process consumes long time. For example, patent application No. 201680073376.2 discloses a metal coating method in which a first metal powder is heated at a temperature below the softening point; heating the gas at a temperature of 200-600 ℃; the heated metal powder is vacuum sprayed together with the heated gas to form a metal coating. The method needs to heat the metal powder, so that the metal powder is easy to oxidize, and two different materials cannot be sprayed simultaneously to be uniformly adhered to the surface of the device.
Therefore, if a method for coating soft metal in a high-hard surface microstructure through friction between the soft metal and the high-hard surface can be provided to improve the wetting, heat conduction and heat dissipation performance of the high-hard surface, especially when the high-hard surface has a microstructure, fine particles of a solid lubricant are continuously accumulated in the high-hard surface and the microstructure to form a porous and loose filler layer, the friction characteristic of the high-hard surface is greatly improved, and if the method is applied to machining of a cutter, the machining precision of parts is also greatly improved.
Disclosure of Invention
The invention provides a method and a device for friction coating of a solid lubricant on a high-hardness surface aiming at the problems of low heat dissipation efficiency, insufficient lubrication and the like of the existing high-hardness surface (such as a cutter of a broach, a lathe tool and the like) in the using process, and the method is a preparation method for covering elements of the solid lubricant on the high-hardness surface by generating relative spiral rotation friction between the solid lubricant (a copper rod, a silver rod, a graphite rod, a carbon fiber rod and the like) and the high-hardness surface (particularly when the high-hardness surface has a microstructure, a composite surface of the microstructure and the lubricant is formed); the method is a method for increasing the surface area of a high-hardness surface microstructure by utilizing a porous and loose filler layer formed by continuously accumulating solid lubricant tiny particles so as to improve the wetting, heat conduction and heat dissipation performance of the high-hardness surface; the method is a method for sharpening the edge by using the soft material, thereby reducing the abrasion of the edge and prolonging the service life of the cutter; the coating device integrates microstructure design, friction covering, X-Y-Z three-axis precise positioning and surface contact force control.
The invention discloses a method for friction coating of a solid lubricant on a high-hardness surface, which comprises the following specific steps:
step one, connecting a solid lubricant bar with an output shaft of a rotating motor through a coupler, and clamping a workpiece with a high-hardness surface to be processed on a clamp.
And step two, sending an instruction to the controller through a control screen connected with the controller, so that the controller controls a driving motor of the X-direction sliding table to drive the X-direction sliding table, and further drives the clamp to horizontally translate the to-be-machined high-hardness surface of the to-be-machined high-hardness surface workpiece to be aligned with the solid lubricant bar along the X direction.
Thirdly, the control screen sends an instruction to the controller, so that the controller controls the lifting platform to ascend, and the Y-direction sliding table, the rotating motor and the solid lubricant bar are driven to ascend to be higher than the high-hardness surface workpiece to be processed synchronously; then, the control screen sends an instruction to the controller, so that the controller controls a driving motor of the Y-direction sliding table to drive the Y-direction sliding table, and the rotating motor and the solid lubricant bar are driven to synchronously horizontally translate along the Y direction to a position right above the high-hardness surface to be processed of the high-hardness surface workpiece to be processed; and then, the control screen sends an instruction to the controller, so that the controller controls the lifting table to descend, and the Y-direction sliding table, the rotating motor and the solid lubricant bar are driven to synchronously descend until the solid lubricant bar is contacted with the high-hardness surface to be processed of the high-hardness surface workpiece to be processed.
Step four, the control screen sends an instruction to the controller, so that the controller controls the electric switch valve to be opened, controls the reversing valve to enable the cylinder to drive the brush to drive the sliding table, the steering engine and the brush to synchronously move until the brush is equal to the solid lubricant bar stock in height, then closes the electric switch valve, and sets the position of the brush at the moment as the initial position of the brush for the controller through the control screen; then, the control screen sends an instruction to the controller, so that the controller controls the brushing device to dip the mixture of the carbon fiber powder and the distilled water in the container, and the mixture is conveyed to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for brushing in a reciprocating manner, and the method comprises the following specific steps: firstly, the controller controls an electric switch valve to be opened, and controls a reversing valve to enable an air cylinder to drive a brush to drive a sliding table, a steering engine and the brush to synchronously descend for a preset distance, and the brush is dipped in a mixture of carbon fiber powder and distilled water in a container; secondly, the controller controls the reversing valve to enable the cylinder to drive the brush to drive the sliding table, the steering engine and the brush to synchronously ascend and reset until the brush is located at the initial position of the brush, and then the electric switch valve is closed; the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally translate a preset distance along the Y direction, the preset distance is equal to the horizontal distance between the initial position of the brush and the high-hard surface to be machined of the high-hard surface workpiece to be machined, and the preset distance reaches the high-hard surface to be machined of the high-hard surface workpiece to be machined; and fourthly, the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally reciprocate for a preset number of times along the Y direction. And finally, the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally translate along the Y direction until the brush is located at the initial position of the brush.
And step five, selecting the friction mode of coating the solid lubricant through the control screen, and then sending an instruction to the controller through the control screen to start grinding in the selected friction mode of coating the solid lubricant. The friction mode of the coating solid lubricant is one of the following three modes: firstly, the Y-direction sliding table is fixed, and a rotating motor drives the solid lubricant bar to rotate; secondly, the rotating motor is not moved, and the Y-direction sliding table drives the solid lubricant bar to horizontally reciprocate and translate along the Y direction; and the rotating motor drives the solid lubricant bar to rotate, the Y-direction sliding table drives the solid lubricant bar to horizontally reciprocate and translate along the Y direction, and the solid lubricant bar performs spiral line motion.
And step six, when grinding lasts for a preset time, the controller controls the lifting table to automatically descend by 0.1mm, the X-direction sliding table automatically feeds by 0.1mm towards the direction of the solid lubricant bar, and the brushing device automatically performs a process of dipping the mixture of the carbon fiber powder and the distilled water in the container once and conveying the mixture to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for reciprocating brushing.
And step seven, after the grinding lasts for the preset total grinding time, the controller controls the lifting table to automatically ascend for a preset distance, so that the solid lubricant bar is not contacted with the surface of the workpiece to be machined with the high-hardness surface any more, and the Y-direction sliding table and the rotating motor are controlled to stop moving. At the moment, the solid lubricant particles on the solid lubricant bar and the carbon fiber powder brushed by the brush are extruded and adhered to the finished surface of the workpiece with the high hard surface to be processed, and a filler layer is formed on the finished surface of the workpiece with the high hard surface to be processed.
And step eight, if the high-hardness surface workpiece to be machined has other high-hardness surfaces to be machined, repeating the step two to the step seven, otherwise, finishing machining the high-hardness surface workpiece to be machined.
Preferably, the workpiece with the high hard surface to be machined is a broach, and the high hard surface to be machined is a rake face of the broach.
Preferably, the material of the solid lubricant bar is copper, silver, graphite or carbon fiber, and the diameter is 3 mm.
Preferably, before the high-hardness surface workpiece to be machined is clamped on the clamp in the step one, the microstructure of the high-hardness surface workpiece to be machined is machined on the high-hardness surface to be machined of the high-hardness surface workpiece to be machined.
Preferably, the following steps are performed before the step four is performed: the control screen sends an instruction to the controller, so that the controller controls the steering engine to drive the brush to adjust the inclination angle, and the force of the brush for brushing the carbon fiber powder and the distilled water mixture on the to-be-processed high-hardness surface of the to-be-processed high-hardness surface workpiece is adjusted.
Preferably, the adjustment of the tilt angle is within 1 °.
Preferably, the preset time for each grinding is 5 minutes.
Preferably, the total grinding time is between half an hour and one hour.
The invention relates to a device for friction coating of solid lubricant on a high-hardness surface, which mainly comprises a bottom plate, a coating device and a brushing device. The coating device mainly comprises a lifting table, a Y-direction sliding table, a rotating motor base, a rotating motor, a coupler, a solid lubricant bar, an X-direction sliding table, a connecting plate and a clamp. The bottom of the lifting table is fixed on the bottom plate, the bottom of the Y-direction sliding table is fixed on a platform of the lifting table, a shell of a rotating motor is fixed on a sliding table of the Y-direction sliding table through a rotating motor base, and the solid lubricant bar is connected with an output shaft of the rotating motor through a coupler; an output shaft of the rotating motor is parallel to the sliding direction of the Y-direction sliding table; the bottom of the X-direction sliding table is fixed on the bottom plate, and the bottom of the clamp is fixed on the sliding table of the X-direction sliding table through a connecting plate; the X-direction sliding table and the Y-direction sliding table are vertically arranged. And the X-direction sliding table and the Y-direction sliding table are both driven by driving motors.
The brushing device mainly comprises a cylinder base, a cylinder, an L-shaped folded plate, a brush driving sliding table, a steering engine, an installation block, a brush, a container and a supporting seat. The cylinder base and the supporting seat are fixed on the bottom plate at intervals; the container is arranged at the top of the supporting seat, and the mixture of the carbon fiber powder and the distilled water is placed in the container; the brush driving sliding table is characterized in that a cylinder body of the cylinder is fixed to the top of the cylinder base, and the bottom of the brush driving sliding table is fixed to a push rod of the cylinder through an L-shaped folded plate; the brush driving sliding table is parallel to the Y-direction sliding table; the brush driving sliding table is provided with a driving motor for driving; the shell of the steering engine is fixed on a sliding table of the brush driving sliding table; the handle part of the brush is fixed on the output shaft of the steering engine through the mounting block; the brush is aligned with the solid lubricant bar in the X direction.
Preferably, the stroke of the Y-direction sliding table is 300mm, and the repeated positioning precision is +/-0.05 mm.
The invention has the following beneficial effects:
according to the invention, the high-hardness surface is coated with the soft material particle solid lubricant and the mixture of the carbon fiber powder and the distilled water in a friction manner, and the heat dissipation effect of the high-hardness surface is improved by utilizing the high heat conductivity of the solid lubricant; particularly, when the high-hardness surface has a microstructure, the high-hardness surface, a micro solid lubricant ground in the microstructure, carbon fiber powder and a distilled water mixture are continuously accumulated to form a porous and loose filler layer, so that the surface area of the high-hardness surface is increased, and the wetting property, the heat conduction property and the heat dissipation property of the high-hardness surface are improved; compared with the existing method for forming the wear-resistant layer on the high-hardness surface by electroplating, spraying and the like, the method has the characteristics of high efficiency and low cost; furthermore, when the packing layer generated on the high-hardness surface is locally worn, the local worn position can be quickly and independently repaired on site, compared with the local repairing process of the existing methods such as electroplating and spraying, the time and energy are saved, and the packing layer is still symmetrical on the whole after the local repairing (the electroplating method cannot be used for symmetrically performing the local repairing because a new wear-resistant layer is plated on the non-worn position when the local worn position is repaired by the electroplating method, and although the repaired packing layer can be symmetrical by subsequent polishing, the spraying method has complex process and low efficiency); furthermore, if the method of the invention is adopted to coat the solid lubricant on the broach by using the soft material, the roughness of the front tool face of the broach is repaired to a certain extent, so that the cutting fluid is easier to spread on the front tool face of the broach, the wetting and lubricating effects are more effectively achieved, the processing quality of the broach is improved, the cutting edge can be sharpened, and the cutting performance of the broach is improved.
Drawings
Fig. 1 is a schematic view of the device for processing a broach with a microstructure on a rake surface.
Fig. 2 is a perspective view showing the structure of the coating apparatus of the present invention.
Fig. 3 is a perspective view showing the construction of the applying brush device according to the present invention.
Fig. 4 is a schematic diagram of the processing of the broach with the microstructure on the rake face and the processing of the rake face of the back broach by the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figure 1, the device for friction coating of solid lubricant on high-hardness surface mainly comprises a base plate 1, a coating device 2 and a painting device 3. As shown in figure 2, the coating device 2 mainly comprises a lifting table 2-1, a Y-direction sliding table 2-2, a rotating motor base 2-3, a rotating motor 2-4, a coupler 2-5, a solid lubricant bar 2-6, an X-direction sliding table 2-7, a connecting plate 2-8 and a clamp 2-9. The bottom of a lifting platform 2-1 is fixed on a bottom plate 1, the bottom of a Y-direction sliding platform 2-2 is fixed on a platform of the lifting platform 2-1, a shell of a rotating motor 2-4 is fixed on a sliding platform of the Y-direction sliding platform 2-2 through a rotating motor base 2-3, and a solid lubricant bar 2-6 is connected with an output shaft of the rotating motor 2-4 through a coupling 2-5; an output shaft of the rotating motor 2-4 is parallel to the sliding direction of the Y-direction sliding table 2-2; the bottom of the X-direction sliding table 2-7 is fixed on the bottom plate 1, and the bottom of the clamp 2-9 is fixed on the sliding table of the X-direction sliding table 2-7 through the connecting plate 2-8; the X-direction sliding table 2-7 is perpendicular to the Y-direction sliding table 2-2. Wherein, the X-direction sliding table 2-7 and the Y-direction sliding table 2-2 are all linear modules and are driven by a driving motor. Preferably, the model of the lifting platform 2-1 is NT01VA60M, the travel of the Y-direction sliding platform 2-2 is 300mm, and the repeated positioning precision is +/-0.05 mm.
As shown in figure 3, the brushing device 3 mainly comprises a cylinder base 3-1, a cylinder 3-2, an L-shaped folded plate 3-3, a brush driving sliding table 3-4, a steering engine 3-5, an installation block 3-6, a brush 3-7, a container 3-8 and a support seat 3-9. The cylinder base 3-1 and the supporting seat 3-9 are fixed on the bottom plate 1 at intervals; the container 3-8 is arranged at the top of the supporting seat 3-9, and the mixture of carbon fiber powder and distilled water is arranged in the container 3-8; the cylinder body of the cylinder 3-2 is fixed on the top of the cylinder base 3-1, and the bottom of the brush driving sliding table 3-4 is fixed on a push rod of the cylinder 3-2 through an L-shaped folded plate 3-3; the brush driving sliding table 3-4 is parallel to the Y-direction sliding table 2-2; the brush driving sliding table 3-4 is a linear module and is provided with a driving motor for driving; a shell of the steering engine 3-5 is fixed on a sliding table of the brush driving sliding table 3-4; the handle part of the brush 3-7 is fixed on the output shaft of the steering engine 3-5 through the mounting block 3-6; the brushes 3-7 are aligned with the solid lubricant bars 2-6 in the direction X; the up-and-down movement of the brush is controlled by the cylinder 3-2 to dip the mixture of the carbon fiber powder and the distilled water in the container 3-8, the brush is controlled to drive the sliding table 3-4 to reciprocate in the Y direction to brush the mixture of the carbon fiber powder and the distilled water on the cutter teeth, and the inclination angle of the brush 3-7 is adjusted by the steering engine 3-5, so that the force of the brush 3-7 for brushing the mixture of the carbon fiber powder and the distilled water on the high-hardness surface to be processed of the high-hardness surface workpiece to be processed is adjusted.
The lifting platform 2-1, the rotating motor 2-4, the steering engine 3-5, the driving motor of the X-direction sliding platform 2-7, the driving motor of the Y-direction sliding platform 2-2 and the driving motor of the brush driving sliding platform 3-4 are all connected with a controller through drivers; the cylinder 3-2 is connected with an air pump through a reversing valve and an electric switch valve (the electric switch valve can also be replaced by the electric valve), and the reversing valve and the electric switch valve are controlled by a controller; the controller is connected with a control screen (provided with a control interface, and a computer can be adopted).
The method for coating the solid lubricant on the device for friction coating the solid lubricant on the high-hardness surface comprises the following specific steps:
step one, connecting a solid lubricant bar 2-6 with an output shaft of a rotating motor 2-4 through a coupler 2-5; processing a microstructure (the shape of the microstructure is triangular, circular or rectangular) on the high-hardness surface to be processed of the high-hardness surface workpiece to be processed, and clamping the high-hardness surface workpiece to be processed on the clamps 2-9.
And step two, sending an instruction to the controller through a control screen connected with the controller, so that the controller controls a driving motor of the X-direction sliding table 2-7 to drive the X-direction sliding table 2-7, and further drives the clamp 2-9 to enable the high-hardness surface to be machined of the high-hardness surface workpiece to be machined (if the high-hardness surface workpiece to be machined is the broach 2-10, and the high-hardness surface to be machined is the rake face of the broach 2-10) to horizontally translate along the X direction to be aligned with a solid lubricant bar 2-6 (the material is preferably copper, silver, graphite or carbon fiber, and the diameter is preferably 3 mm).
Thirdly, the control screen sends an instruction to the controller, so that the controller controls the lifting platform 2-1 to ascend, and drives the Y-direction sliding platform 2-2, the rotating motor 2-4 and the solid lubricant bar 2-6 to synchronously ascend to a position higher than a high-hard-surface workpiece to be processed; then, the control screen sends an instruction to the controller, so that the controller controls a driving motor of the Y-direction sliding table 2-2 to drive the Y-direction sliding table 2-2, and the rotating motor 2-4 and the solid lubricant bar 2-6 are driven to synchronously horizontally translate along the Y direction to a position right above the high-hardness surface to be processed of the high-hardness surface workpiece to be processed; and then, the control screen sends an instruction to the controller, so that the controller controls the lifting table 2-1 to descend, and drives the Y-direction sliding table 2-2, the rotating motor 2-4 and the solid lubricant bar 2-6 to synchronously descend until the solid lubricant bar 2-6 is contacted with the high-hardness surface to be processed of the high-hardness surface workpiece to be processed.
Step four, the control screen sends an instruction to the controller, so that the controller controls the electric switch valve to be opened, controls the reversing valve to enable the cylinder 3-2 to drive the brush driving sliding table 3-4, the steering engine 3-5 and the brush 3-7 to synchronously move to the height of the brush 3-7 and the height of the solid lubricant bar 2-6, then closes the electric switch valve, and sets the position of the brush 3-7 as the initial position of the brush for the controller at the moment through the control screen; then, the control screen sends an instruction to the controller, so that the controller controls the brushing device 3 to dip the mixture of the carbon fiber powder and the distilled water in the containers 3-8 and convey the mixture to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for brushing in a reciprocating manner, and the method comprises the following specific steps: firstly, the controller controls an electric switch valve to be opened, and controls a reversing valve to enable a cylinder 3-2 to drive a brush to drive a sliding table 3-4, a steering engine 3-5 and a brush 3-7 to synchronously descend for a preset distance (generally about 10 mm), and the brush 3-7 dips a mixture of carbon fiber powder and distilled water in a container 3-8; secondly, the controller controls the reversing valve to enable the cylinder 3-2 to drive the brush driving sliding table 3-4, the steering engine 3-5 and the brush 3-7 to synchronously ascend and reset until the brush 3-7 is at the initial position of the brush, and then the electric switch valve is closed; the controller controls a driving motor of the brush driving sliding table 3-4 to drive the brush driving sliding table 3-4, so that the steering engine 3-5 and the brush 3-7 are driven to synchronously horizontally translate a preset distance (equal to the horizontal distance between the initial position of the brush and the high-hard surface to be machined of the high-hard surface workpiece to be machined) along the Y direction, and the preset distance reaches the high-hard surface to be machined of the high-hard surface workpiece to be machined; and fourthly, the controller controls a driving motor of the brush driving sliding table 3-4 to drive the brush driving sliding table 3-4, so that the steering engine 3-5 and the brush 3-7 are driven to synchronously horizontally reciprocate for preset times (generally 2 times or 3 times) along the Y direction. And finally, the controller controls a driving motor of the brush driving sliding table 3-4 to drive the brush driving sliding table 3-4, so that the steering engine 3-5 and the brush 3-7 are driven to synchronously horizontally translate along the Y direction until the brush 3-7 is positioned at the initial position of the brush. Preferably, the following steps are performed before the step four is performed: the control screen sends an instruction to the controller, so that the controller controls the steering engine 3-5 to drive the brush 3-7 to adjust the inclination angle (small-amplitude adjustment, generally within 1 degree), and the force of the brush 3-7 for coating the mixture of the carbon fiber powder and the distilled water on the to-be-processed high-hardness surface of the to-be-processed high-hardness surface workpiece is adjusted.
And step five, selecting the friction mode of coating the solid lubricant through the control screen, and then sending an instruction to the controller through the control screen to start grinding in the selected friction mode of coating the solid lubricant. Wherein, the friction mode of coating the solid lubricant is one of the following three modes: firstly, the Y-direction sliding table 2-2 is not moved, and the rotating motor 2-4 drives the solid lubricant bar 2-6 to rotate; secondly, the rotating motor 2-4 is not moved, and the Y-direction sliding table 2-2 drives the solid lubricant bar 2-6 to horizontally reciprocate along the Y direction; and thirdly, the rotating motor 2-4 drives the solid lubricant bar 2-6 to rotate, the Y-direction sliding table 2-2 drives the solid lubricant bar 2-6 to horizontally reciprocate along the Y direction, and the solid lubricant bar does spiral line motion.
And step six, every time the grinding lasts for a preset time (preferably 5 minutes), the controller controls the lifting table 2-1 to automatically descend for 0.1mm, the X-direction sliding table 2-7 automatically feeds the solid lubricant bar for 0.1mm along the direction towards the solid lubricant bar 2-6, and the brushing device 3 automatically performs the process of once dipping the mixture of the carbon fiber powder and the distilled water in the container 3-8 and conveying the mixture to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for brushing back and forth.
And seventhly, after the grinding is continued for a preset total grinding time (generally, a value is obtained between half an hour and one hour), the controller controls the lifting table 2-1 to automatically ascend for a preset distance (generally, more than 2 mm) so that the solid lubricant bar 2-6 is not contacted with the surface of the workpiece to be machined with the high-hardness surface, and controls the Y-direction sliding table 2-2 and the rotating motor 2-4 to stop moving. At the moment, the solid lubricant particles on the solid lubricant bar and the carbon fiber powder brushed by the brush are extruded and adhered to the finished surface and the microstructure of the high-hardness surface workpiece to be processed, and a porous and loose filler layer is formed on the finished surface and the microstructure of the high-hardness surface workpiece to be processed.
And step eight, if the high-hardness surface workpiece to be machined has other high-hardness surfaces to be machined, repeating the step two to the step seven, otherwise, finishing machining the high-hardness surface workpiece to be machined.
As shown in figure 4, in the invention, a broach 2-10 is used as a workpiece with a high-hardness surface to be processed, a front tool face of the broach 2-10 is used as the high-hardness surface to be processed, and a friction mode for coating a solid lubricant selects a third mode to carry out processing tests, so that the tiny solid lubricant particles on a solid lubricant bar and carbon fiber powder coated by a brush are extruded into the front tool face and a microstructure and are continuously accumulated to form a porous and loose filler layer in the continuous rotating friction process of the solid lubricant bar and the front tool face of the broach. The porous and loose packing layer formed in the broach rake face increases the surface area of the broach rake face, thereby increasing the heat conduction and heat dissipation performance of the broach and prolonging the service life of the broach. From the Wenzel model, the surface microstructure of the broach changes the wettability, so that the cutting fluid is not easy to quickly and fully wet a processing area in the processing process, and the processing efficiency and the processing precision are affected. The coating of the micro particles on the broach rake surface restores the roughness of the broach rake surface to a certain extent, so that the cutting fluid is easier to spread on the broach rake surface, the wetting and lubricating effects are more effectively achieved, and the processing quality of the broach is improved. In addition, in the reciprocating coating process of the solid lubricant bar, the sharpening effect can be achieved on the knife edge, tiny chips adhered to the knife edge are removed, meanwhile, the solid lubricant bar is made of a soft material relative to the material of the broach, the broach is ground and sharpened through the soft material, and compared with a steel brush commonly used in the industry, the abrasion of the broach is reduced, and the service life of the broach is further prolonged.
Claims (10)
1. A method of friction coating a high hard surface with a solid lubricant, characterized by: the method comprises the following specific steps:
step one, connecting a solid lubricant bar with an output shaft of a rotating motor through a coupler, and clamping a workpiece with a high-hardness surface to be processed on a clamp;
sending an instruction to a controller through a control screen connected with the controller, and enabling the controller to control a driving motor of the X-direction sliding table to drive the X-direction sliding table, so that a clamp is driven to enable the high-hardness surface to be machined of the high-hardness surface workpiece to be machined to horizontally translate along the X direction to be aligned with the solid lubricant bar;
thirdly, the control screen sends an instruction to the controller, so that the controller controls the lifting platform to ascend, and the Y-direction sliding table, the rotating motor and the solid lubricant bar are driven to ascend to be higher than the high-hardness surface workpiece to be processed synchronously; then, the control screen sends an instruction to the controller, so that the controller controls a driving motor of the Y-direction sliding table to drive the Y-direction sliding table, and the rotating motor and the solid lubricant bar are driven to synchronously horizontally translate along the Y direction to a position right above the high-hardness surface to be processed of the high-hardness surface workpiece to be processed; then, the control screen sends an instruction to the controller, so that the controller controls the lifting table to descend to drive the Y-direction sliding table, the rotating motor and the solid lubricant bar to synchronously descend until the solid lubricant bar is contacted with the high-hardness surface to be processed of the high-hardness surface workpiece to be processed;
step four, the control screen sends an instruction to the controller, so that the controller controls the electric switch valve to be opened, controls the reversing valve to enable the cylinder to drive the brush to drive the sliding table, the steering engine and the brush to synchronously move until the brush is equal to the solid lubricant bar stock in height, then closes the electric switch valve, and sets the position of the brush at the moment as the initial position of the brush for the controller through the control screen; then, the control screen sends an instruction to the controller, so that the controller controls the brushing device to dip the mixture of the carbon fiber powder and the distilled water in the container, and the mixture is conveyed to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for brushing in a reciprocating manner, and the method comprises the following specific steps: firstly, the controller controls an electric switch valve to be opened, and controls a reversing valve to enable an air cylinder to drive a brush to drive a sliding table, a steering engine and the brush to synchronously descend for a preset distance, and the brush is dipped in a mixture of carbon fiber powder and distilled water in a container; secondly, the controller controls the reversing valve to enable the cylinder to drive the brush to drive the sliding table, the steering engine and the brush to synchronously ascend and reset until the brush is located at the initial position of the brush, and then the electric switch valve is closed; the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally translate a preset distance along the Y direction, the preset distance is equal to the horizontal distance between the initial position of the brush and the high-hard surface to be machined of the high-hard surface workpiece to be machined, and the preset distance reaches the high-hard surface to be machined of the high-hard surface workpiece to be machined; the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally reciprocate for a preset number of times along the Y direction; finally, the controller controls a driving motor of the brush driving sliding table to drive the brush driving sliding table, so that the steering engine and the brush are driven to synchronously horizontally translate along the Y direction until the brush is located at the initial position of the brush;
selecting a friction mode of coating the solid lubricant through the control screen, and then sending an instruction to the controller through the control screen to start grinding in the selected friction mode of coating the solid lubricant; the friction mode of the coating solid lubricant is one of the following three modes: firstly, the Y-direction sliding table is fixed, and a rotating motor drives the solid lubricant bar to rotate; secondly, the rotating motor is not moved, and the Y-direction sliding table drives the solid lubricant bar to horizontally reciprocate and translate along the Y direction; the rotating motor drives the solid lubricant bar to rotate, the Y-direction sliding table drives the solid lubricant bar to horizontally reciprocate and translate along the Y direction, and the solid lubricant bar does spiral line motion;
step six, when grinding lasts for a preset time, the controller controls the lifting table to automatically descend by 0.1mm, the X-direction sliding table automatically feeds by 0.1mm towards the direction of the solid lubricant bar, and the brushing device automatically performs a process of dipping the mixture of the carbon fiber powder and the distilled water in the container once and conveying the mixture to the high-hardness surface to be processed of the high-hardness surface workpiece to be processed for reciprocating brushing;
step seven, after the grinding lasts for the preset total grinding time, the controller controls the lifting table to automatically ascend for a preset distance, so that the solid lubricant bar is not contacted with the surface to be machined of the high-hardness surface to be machined any more, and the Y-direction sliding table and the rotating motor are controlled to stop moving; at the moment, the solid lubricant particles on the solid lubricant bar and the carbon fiber powder brushed by the brush are extruded and adhered to the processed surface of the workpiece with the high hard surface to be processed, and a packing layer is formed on the processed surface of the workpiece with the high hard surface to be processed;
and step eight, if the high-hardness surface workpiece to be machined has other high-hardness surfaces to be machined, repeating the step two to the step seven, otherwise, finishing machining the high-hardness surface workpiece to be machined.
2. A method of friction coating a high hard surface with a solid lubricant according to claim 1, characterized in that: the workpiece with the high hard surface to be processed is a broach, and the high hard surface to be processed is a rake face of the broach.
3. A method of friction coating a high hard surface with a solid lubricant according to claim 1, characterized in that: the solid lubricant bar is made of copper, silver, graphite or carbon fiber and has a diameter of 3 mm.
4. A method of friction coating a high hard surface with a solid lubricant according to claim 1, 2 or 3, characterized in that: and in the first step, before the workpiece with the high hard surface to be machined is clamped on the clamp, machining a microstructure on the high hard surface to be machined of the workpiece with the high hard surface to be machined.
5. A method of friction coating a high hard surface with a solid lubricant according to claim 1, 2 or 3, characterized in that: before the step four is executed, the following steps are executed: the control screen sends an instruction to the controller, so that the controller controls the steering engine to drive the brush to adjust the inclination angle, and the force of the brush for brushing the carbon fiber powder and the distilled water mixture on the to-be-processed high-hardness surface of the to-be-processed high-hardness surface workpiece is adjusted.
6. A method of friction coating a solid lubricant on a high hard surface according to claim 5, characterized in that: the adjustment range of the inclination angle is within 1 degree.
7. A method of friction coating a high hard surface with a solid lubricant according to claim 1, 2 or 3, characterized in that: the preset time for each grinding is 5 minutes.
8. A method of friction coating a high hard surface with a solid lubricant according to claim 1, 2 or 3, characterized in that: the total grinding time is between half an hour and one hour.
9. An apparatus for friction coating a solid lubricant on a high hard surface, characterized by: mainly comprises a bottom plate, a coating device and a brushing device; the coating device mainly comprises a lifting table, a Y-direction sliding table, a rotating motor base, a rotating motor, a coupler, a solid lubricant bar, an X-direction sliding table, a connecting plate and a clamp; the bottom of the lifting table is fixed on the bottom plate, the bottom of the Y-direction sliding table is fixed on a platform of the lifting table, a shell of a rotating motor is fixed on a sliding table of the Y-direction sliding table through a rotating motor base, and the solid lubricant bar is connected with an output shaft of the rotating motor through a coupler; an output shaft of the rotating motor is parallel to the sliding direction of the Y-direction sliding table; the bottom of the X-direction sliding table is fixed on the bottom plate, and the bottom of the clamp is fixed on the sliding table of the X-direction sliding table through a connecting plate; the X-direction sliding table and the Y-direction sliding table are vertically arranged; the X-direction sliding table and the Y-direction sliding table are both provided with driving motors for driving; the brushing device mainly comprises a cylinder base, a cylinder, an L-shaped folded plate, a brush driving sliding table, a steering engine, an installation block, a brush, a container and a supporting seat; the cylinder base and the supporting seat are fixed on the bottom plate at intervals; the container is arranged at the top of the supporting seat, and the mixture of the carbon fiber powder and the distilled water is placed in the container; the brush driving sliding table is characterized in that a cylinder body of the cylinder is fixed to the top of the cylinder base, and the bottom of the brush driving sliding table is fixed to a push rod of the cylinder through an L-shaped folded plate; the brush driving sliding table is parallel to the Y-direction sliding table; the brush driving sliding table is provided with a driving motor for driving; the shell of the steering engine is fixed on a sliding table of the brush driving sliding table; the handle part of the brush is fixed on the output shaft of the steering engine through the mounting block; the brush is aligned with the solid lubricant bar in the X direction.
10. An apparatus for friction coating a high hard surface with a solid lubricant according to claim 9, wherein: the stroke of Y to slip table is 300mm, and the repeated positioning precision is 0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403953.4A CN112705447B (en) | 2020-12-02 | 2020-12-02 | Method and apparatus for friction coating solid lubricant on high hard surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403953.4A CN112705447B (en) | 2020-12-02 | 2020-12-02 | Method and apparatus for friction coating solid lubricant on high hard surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112705447A true CN112705447A (en) | 2021-04-27 |
| CN112705447B CN112705447B (en) | 2022-05-03 |
Family
ID=75542496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011403953.4A Active CN112705447B (en) | 2020-12-02 | 2020-12-02 | Method and apparatus for friction coating solid lubricant on high hard surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112705447B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177274A (en) * | 1997-09-04 | 1999-03-23 | Ahresty Corp | Method for lubricating plunger tip, pressurizing pin and the like |
| JP2002372189A (en) * | 2001-06-04 | 2002-12-26 | Halla Aircon Co Ltd | Solid lubricating film forming method, and cam plate for compressor |
| CN1651157A (en) * | 2005-01-28 | 2005-08-10 | 武汉理工大学 | Semifinished product composite lubricating film coating method for cold forging |
| US20100015350A1 (en) * | 2008-07-16 | 2010-01-21 | Siemens Power Generation, Inc. | Process of producing an abradable thermal barrier coating with solid lubricant |
| US20110143024A1 (en) * | 2009-12-16 | 2011-06-16 | Konica Minolta Business Technologies, Inc. | Solid lubricant-coating device and image-forming apparatus |
| CN204204510U (en) * | 2014-11-06 | 2015-03-11 | 山东赛特电工股份有限公司 | Electromagnetic wire solid lubricant heating coating unit |
| CN106111432A (en) * | 2016-08-09 | 2016-11-16 | 耐世特凌云驱动系统(涿州)有限公司 | Equipment brushed by a kind of friction coat |
| CN111346796A (en) * | 2020-03-24 | 2020-06-30 | 佛山市艾乐博机器人科技有限公司 | Automatic powder coating equipment |
-
2020
- 2020-12-02 CN CN202011403953.4A patent/CN112705447B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177274A (en) * | 1997-09-04 | 1999-03-23 | Ahresty Corp | Method for lubricating plunger tip, pressurizing pin and the like |
| JP2002372189A (en) * | 2001-06-04 | 2002-12-26 | Halla Aircon Co Ltd | Solid lubricating film forming method, and cam plate for compressor |
| CN1651157A (en) * | 2005-01-28 | 2005-08-10 | 武汉理工大学 | Semifinished product composite lubricating film coating method for cold forging |
| US20100015350A1 (en) * | 2008-07-16 | 2010-01-21 | Siemens Power Generation, Inc. | Process of producing an abradable thermal barrier coating with solid lubricant |
| US20110143024A1 (en) * | 2009-12-16 | 2011-06-16 | Konica Minolta Business Technologies, Inc. | Solid lubricant-coating device and image-forming apparatus |
| CN204204510U (en) * | 2014-11-06 | 2015-03-11 | 山东赛特电工股份有限公司 | Electromagnetic wire solid lubricant heating coating unit |
| CN106111432A (en) * | 2016-08-09 | 2016-11-16 | 耐世特凌云驱动系统(涿州)有限公司 | Equipment brushed by a kind of friction coat |
| CN111346796A (en) * | 2020-03-24 | 2020-06-30 | 佛山市艾乐博机器人科技有限公司 | Automatic powder coating equipment |
Non-Patent Citations (1)
| Title |
|---|
| 吕俊杰等: "拉刀刀尖表面微结构单点金刚石刀具制备及降载机制", 《中国机械工程》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112705447B (en) | 2022-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103111819B (en) | Preparation method of cutter surface antisticking antifriction micro mosaic composite texture | |
| CN107931605B (en) | 3D printing manufacturing method for friction pair surface microtexture | |
| US6802677B2 (en) | Tool having honed cutting edge | |
| CN110976869A (en) | Part additive composite manufacturing device and method | |
| CN110052779B (en) | High-performance surface composite strengthening method for shaft parts | |
| CN109732200A (en) | A kind of the laser processing auxiliary device and micro- texture laser processing of micro- texture | |
| CN112705447B (en) | Method and apparatus for friction coating solid lubricant on high hard surface | |
| CN114226734B (en) | Copper-containing wear-resistant coating for additive manufacturing titanium alloy surface and preparation process thereof | |
| CN208073998U (en) | A kind of bumps are spaced apart micro- textural composite guide rail | |
| EP1877216B1 (en) | Method of electrolytically microfinishing a metallic workpiece | |
| CN104117773A (en) | Self-lubricating anti-attrition composite structure surface manufacturing method based on laser texturing | |
| CN108893733B (en) | Preparation method of laser thermal coupling texture solid lubricating coating | |
| CN110788406A (en) | Machining device and method for precise scraping of inner surface of bearing bush | |
| CN108098364A (en) | A kind of micro- texture guide rail of combination and preparation method thereof | |
| CN112226766A (en) | Preparation method of high-entropy alloy powder laser cladding layer | |
| CN208067761U (en) | A kind of micro- texture guide rail of combination | |
| CN110116265B (en) | Heterogeneous laminated plate single-point numerical control connection and progressive composite forming system and application thereof | |
| CN111775028A (en) | Polishing device and polishing method for fatigue test sample of metal sheet | |
| CN107775520B (en) | A kind of processing method of connecting rod macropore platform reticulate pattern | |
| TWI621737B (en) | A preparation method of electro-thermal alloying for metal surface by mechanical auxiliary | |
| CN112975662A (en) | Online trimming device for superhard grinding wheel | |
| CN101724840A (en) | Induction remelting machine tool | |
| CN111014856A (en) | Reciprocating type electrolytic grinding wire cutting machining device and method | |
| CN107020583A (en) | A kind of preparation method of the uniform super hard abrasive oilstone of hardness | |
| CN113996795A (en) | Composite process for rapidly preparing wear-resistant and corrosion-resistant coating on surface of workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |