Vacuum brazing device and method for machining micro-blade grinding wheel through composite technology

Abstract

The invention discloses a composite technology micro-blade grinding wheel machining vacuum brazing device and method, and belongs to the field of brazing. The composite technology micro-blade grinding wheel machining vacuum brazing device comprises an external shell fixedly erected outside a vacuum brazing machine, a motor is further arranged outside the external shell, a connector is fixedly arranged at the output end of the motor, and the motor drives a grinding wheel to rotate through the connector; according to the automatic brazing filler metal coating device, the brazing filler metal conveying unit and the brazing filler metal coating unit are started at the same time through the motor, the cutting face of the surface of the outer ring of the grinding wheel can be automatically coated with the brazing filler metal, manual coating can be replaced, the coating efficiency is improved, and the coating efficiency is improved. The efficiency of coating the brazing filler metal on the surface of the outer ring of the grinding wheel is improved to a great extent, the device is more suitable for vacuum brazing treatment on batch micro-blade grinding wheels, and meanwhile, under the action of the brazing filler metal auxiliary adding unit, the brazing filler metal conveying stability can be improved.

Description

Technical Field

[0001] The present invention relates to the field of brazing, and specifically to a vacuum brazing device and method for machining a composite process micro-edge grinding wheel. Background Technique

[0002] A micro-edge grinding wheel is a high-performance grinding wheel designed specifically for ultra-precision grinding. Its core feature is that abrasive grains (such as diamond particles, etc.) are finely arranged to form microscopic cutting edges. Through vacuum brazing technology, the diamond particles are welded to the cutting surface of the grinding wheel, thereby improving the cutting performance of the grinding wheel.

[0003] Before the micro-edge grinding wheel undergoes vacuum brazing, the grinding wheel needs to be pretreated, that is, the diamond particles are adhesively wrapped on the cutting surface of the grinding wheel under the action of water glue. After the water glue solidifies, the excess glue is removed by brushing a glue remover. Then, through the solder powder wet coating method (a wet material formed by pouring solder powder and water glue into a container and uniformly mixing them), the wet material of the solder powder is coated on the cutting surface of the grinding wheel with a brush. The purpose is to make the solder evenly cover the surface of the diamond particles and the gaps between the diamond particles and the cutting surface of the grinding wheel. The uniformity of the wet material coating will directly affect the effect after the grinding wheel undergoes vacuum brazing. For this reason, usually, the wet material is manually applied to the cutting surface of the grinding wheel, but the efficiency of manual application is very slow and is not suitable for the vacuum brazing production of batch micro-edge grinding wheels. Summary of the Invention

[0004] The purpose of the present invention is to provide a vacuum brazing device and method for machining a composite process micro-edge grinding wheel to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A vacuum brazing device for machining a composite process micro-edge grinding wheel, comprising: an external device housing fixedly installed outside the vacuum brazing machine, an electric motor is further provided outside the external device housing, an output end of the electric motor is fixedly provided with a connector, the electric motor drives the grinding wheel to rotate through the connector, the position between the electric motor and the external device housing can be adjusted, a solder coating unit is provided on a side wall of the external device housing, the solder coating unit is used for evenly coating the solder on an outer ring surface of the grinding wheel, a solder conveying unit is further provided above the solder coating unit, the solder conveying unit is used for adhering the solder to the outer ring surface of the grinding wheel, an electric motor is fixedly provided inside the external device housing, and the electric motor is used for driving the solder conveying unit and the solder coating unit to operate simultaneously; A solder auxiliary adding unit for evenly and continuously transporting the solder into the inside of the solder conveying unit, and the solder auxiliary adding unit is provided at an inner top of the external device housing.

[0006] Preferably, the solder coating unit includes two symmetrically distributed rotating balls rotatably arranged on the outer wall of the peripheral housing. The output end of the motor is fixedly provided with a first rotating shaft, and the first rotating shaft is vertically upward. The two rotating balls are symmetrical about the first rotating shaft. Two second rotating shafts are rotatably arranged inside the peripheral housing, and one ends of the two second rotating shafts are respectively fixed to the two rotating balls. The second rotating shaft and the first rotating shaft are vertically distributed, and the centers of the rotating balls on the same side coincide with the axes of the second rotating shafts. A worm gear is fixedly sleeved on the outer surface of each second rotating shaft, and a worm meshing with the worm gear is fixedly sleeved on the outer surface of the first rotating shaft. One end of the rotating ball away from the second rotating shaft is provided with a third rotating shaft, and a nylon brush head is fixedly arranged at the other end of the third rotating shaft. The third rotating shaft and the nylon brush head are threadedly fixedly assembled. The second rotating shaft and the third rotating shaft on the same side are at an obtuse angle, and the corner coincides with the rotating ball.

[0007] Preferably, the third rotating shafts on the same side are rotatably inserted into the rotating balls, and a rotating component is further arranged inside the rotating balls. The rotating component includes a first sleeve fixed inside the rotating balls, and the axis of the first sleeve coincides with the radius of the rotating balls. A first sliding disc is slidably assembled inside the first sleeve, and a push rod slidably passing through the first sleeve is fixedly arranged at one end of the first sliding disc away from the center of the rotating ball. A tension spring is further fixedly arranged between one end of the first sliding disc away from the center of the rotating ball and the first sleeve, and the tension spring is distributed outside the push rod. One end of the third rotating shaft extending into the rotating ball is fixedly provided with a movable ratchet wheel. A ratchet plate is fixedly arranged on the outer wall of the first sliding disc, and the ratchet plate is movably meshed with the movable ratchet wheel. The ratchet plate is also slidably assembled with the first sleeve. An inclined arc plate is arranged around each rotating ball, and the inclined arc plate is fixed to the outside of the peripheral housing. A braking member is further arranged between the outer wall of the third rotating shaft and the rotating ball.

[0008] Preferably, the braking member includes a plurality of circular arc positioning grooves circumferentially and equidistantly distributed on the outer surface of the third rotating shaft. A second sleeve is fixedly arranged on the outer wall of the rotating ball, and the axis of the second sleeve is perpendicular to the axis of the third rotating shaft. A second sliding disc is slidably assembled inside the second sleeve. A dome-shaped braking rod is fixedly arranged at one end of the second sliding disc close to the third rotating shaft, and the dome-shaped end of the dome-shaped braking rod is movably embedded inside the circular arc positioning groove. A second spring is fixedly arranged between one end of the second sliding disc away from the dome-shaped braking rod and the second sleeve.

[0009] Preferably, the solder delivery unit includes a sleeve fixedly mounted inside the external housing, the sleeve is located above the worm, and the axis of the sleeve is perpendicularly intersected with the axis of the first rotating shaft, a spiral blade shaft is rotatably mounted inside the sleeve, a bevel gear is fixedly mounted between one end of the sleeve close to the first rotating shaft and the outer surface of the first rotating shaft, and the two bevel gears are movably meshed, and a butt joint is threadedly mounted on one end of the sleeve away from the bevel gear, and the inner diameter of the butt joint is equal to the minimum inner diameter of the sleeve The butt joint is consistent with the above-mentioned bevel gear, and one end of the butt joint is fixedly connected with a feeding head, and the other end of the feeding head is provided with a straight groove, and the straight groove is sleeved on the outer ring part of the grinding wheel, and the width of the straight groove is greater than the thickness of the grinding wheel. A barrel is placed inside the external shell, and the bottom of the barrel is fixedly connected with the outer surface of the sleeve, and the outer surface of the sleeve or the butt joint is also equipped with a manual opening and closing valve, and the manual opening and closing valve does not contact the end of the spiral blade shaft, and the manual opening and closing valve is a manually opened and closed butterfly valve or a ball valve.

[0010] Preferably, the solder auxiliary adding unit includes an articulated frame plate distributed above the sleeve, and the articulated frame plate is fixed inside the external shell, the articulated frame plate is located on the side of the first rotating shaft away from the barrel, and two striking plates are hingedly provided at one end of the articulated frame plate close to the barrel, and the other ends of the two striking plates are symmetrically unfolded, the first rotating shaft and the barrel are located between the two striking plates, and a first spring is fixedly provided between an end surface of each striking plate away from the first rotating shaft and the articulated frame plate, and a toggle component is also provided between the top of the first rotating shaft and the two striking plates, the toggle component is used to slowly push the striking plate away and then release it instantly, so that the end of the striking plate strikes the surface of the barrel under the elastic pressure of the first spring.

[0011] Preferably, the shifting component comprises a cam fixedly mounted on the top of the first rotating shaft, and a protrusion is fixedly provided on one end of each striking plate close to the cam, and the end of the protrusion is in sliding contact with the outer surface of the cam.

[0012] Preferably, the cam includes a disc portion and a crescent portion fixed on the periphery of the disc portion.

[0013] Preferably, the barrel is made of hard plastic, a circular slot for accommodating the barrel is provided on the top of the external shell, the barrel is also cylindrical, and the outer diameter of the barrel is smaller than the inner diameter of the circular slot, and a flexible corrugated plastic film is installed between the inner wall of the circular slot and the outer surface of the barrel with glue.

[0014] A method for processing a vacuum brazing device using a composite micro-blade grinding wheel, the method comprising the following steps: S1. Place the grinding wheel between two nylon brush heads so that the outer ring surface of the grinding wheel can contact the bristles of the two nylon brush heads. At the same time, let the straight groove sleeve on the outer ring surface of the grinding wheel, and keep the grinding wheel rotating self - driven in this state. S2. Start the motor. Driven by the first rotating shaft on the spiral blade shaft, convey the wet solder towards the feeding head, and make the solder adhere to the outer ring surface of the grinding wheel through the straight groove. Under the action of the worm and the worm wheel, make the two nylon brush heads rotate simultaneously to smear the solder adhered to the outer ring surface of the grinding wheel evenly. S3. After the solder on the outer ring of the grinding wheel is smeared evenly, put the grinding wheel into the internal part of the vacuum brazing machine for vacuum high - temperature brazing treatment.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by starting the solder conveying unit and the solder smearing unit simultaneously with the motor, the cutting surface on the outer ring surface of the grinding wheel can be automatically coated with solder, which can replace manual coating, greatly improving the efficiency of coating solder on the outer ring surface of the grinding wheel. It is more suitable for vacuum brazing treatment of batch micro - edge grinding wheels. At the same time, under the action of the solder auxiliary adding unit, the stability of solder conveying can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the peripheral housing of the present invention; Figure 3 It is a schematic diagram of the push rod and the inclined arc plate of the present invention; Figure 4 It is a schematic diagram of the manual on - off valve of the present invention; Figure 5 It is a schematic diagram of the sleeve and the butt joint pipe of the present invention; Figure 6 For the present invention Figure 5 The enlarged view at A in; Figure 7 It is a schematic diagram of the internal structure of the rotating ball of the present invention; Figure 8 For the present invention Figure 7 The enlarged view at B in.

[0017] In the figure: 1. Peripheral housing; 2. Motor; 3. First rotating shaft; 4. Second rotating shaft; 5. Worm; 6. Worm gear; 7. Rotating ball; 8. Third rotating shaft; 9. Nylon brush head; 10. Hinged frame plate; 11. Impact plate; 12. First spring; 13. Convex block; 14. Cam; 15. Bevel gear; 16. Sleeve; 17. Docking pipe; 18. Barrel; 19. Screw blade shaft; 20. Feeding head; 21. Straight groove; 22. Movable ratchet; 23. First sleeve; 24. First sliding disc; 25. Pulling spring; 26. Push rod; 27. Ratchet plate; 28. Inclined arc plate; 29. Second sleeve; 30. Second sliding disc; 31. Second spring; 32. Dome brake rod; 33. Arc positioning groove; 34. Manual opening and closing valve. Specific implementation mode

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Please refer to Figures 1 - 5 , a vacuum brazing device for machining a composite process micro-edge grinding wheel in the figure, including: a peripheral housing 1 fixedly installed outside the vacuum brazing machine, an electric motor is further arranged outside the peripheral housing 1, the output end of the electric motor is fixedly provided with a connector, the electric motor drives the grinding wheel to rotate through the connector, the position between the electric motor and the peripheral housing 1 can be adjusted, a brazing filler metal coating unit is arranged on the side wall of the peripheral housing 1, and the brazing filler metal coating unit is used for evenly coating the brazing filler metal on the outer ring surface of the grinding wheel. A brazing filler metal conveying unit is further arranged above the brazing filler metal coating unit, and the brazing filler metal conveying unit is used for adhering the brazing filler metal to the outer ring surface of the grinding wheel. A motor 2 is fixedly arranged inside the peripheral housing 1, and the motor 2 is used for driving the brazing filler metal conveying unit and the brazing filler metal coating unit to run simultaneously; A brazing filler metal auxiliary adding unit, which is used for evenly and continuously transporting the brazing filler metal into the interior of the brazing filler metal conveying unit, and the brazing filler metal auxiliary adding unit is arranged at the inner top of the peripheral housing 1.

[0020] The solder application unit includes two symmetrically distributed rotating balls 7 rotatably arranged on the outer wall of the peripheral housing 1. The output end of the motor 2 is fixedly provided with a first rotating shaft 3, and the first rotating shaft 3 is vertically upward. The two rotating balls 7 are symmetrical about the first rotating shaft 3. Two second rotating shafts 4 are rotatably arranged inside the peripheral housing 1, and one ends of the two second rotating shafts 4 are respectively fixed to the two rotating balls 7. The second rotating shaft 4 and the first rotating shaft 3 are vertically distributed, and the centers of the rotating balls 7 on the same side coincide with the axes of the second rotating shafts 4. A worm gear 6 is fixedly sleeved on the outer surface of each second rotating shaft 4, and a worm 5 in transmission engagement with the worm gear 6 is fixedly sleeved on the outer surface of the first rotating shaft 3. One end of the rotating ball 7 away from the second rotating shaft 4 is provided with a third rotating shaft 8, and the other end of the third rotating shaft 8 is fixedly provided with a nylon brush head 9. The third rotating shaft 8 and the nylon brush head 9 are fixedly assembled by threads. The second rotating shaft 4 and the third rotating shaft 8 on the same side are at an obtuse angle, and the corner coincides with the rotating ball 7. When the motor 2 drives the worm 5 to rotate through the first rotating shaft 3, through the engagement of the worm 5 and the worm gear 6, the two second rotating shafts 4 can drive the third rotating shafts 8 to rotate synchronously and reversely through the rotating balls 7. The grinding wheel is located between the two nylon brush heads 9, and the solder on the outer ring surface of the grinding wheel is evenly applied by the brushes of the nylon brush heads 9.

[0021] The solder conveying unit includes a sleeve 16 fixedly mounted inside the external housing 1, the sleeve 16 is located above the worm 5, and the axis of the sleeve 16 is perpendicular to the axis of the first rotating shaft 3, a spiral blade shaft 19 is rotatably mounted inside the sleeve 16, a bevel gear 15 is fixedly sleeved between one end of the sleeve 16 close to the first rotating shaft 3 and the outer surface of the first rotating shaft 3, and the two bevel gears 15 are movably meshed, and a butt pipe 17 is threadedly mounted on one end of the sleeve 16 away from the bevel gear 15, the inner diameter of the butt pipe 17 is consistent with the minimum inner diameter of the sleeve 16, and a feed head 20 is fixedly connected to the end of the butt pipe 17 away from the bevel gear 15, and a straight groove 21 is opened at the other end of the feed head 20, and the straight groove 21 is sleeved on the outer ring part of the grinding wheel, and the width of the straight groove 21 is greater than the thickness of the grinding wheel, a barrel 18 is placed inside the external housing 1, and the bottom of the barrel 18 is connected to the outer surface of the sleeve 16. The outer surface of the sleeve 16 or the butt pipe 17 is also equipped with a manual opening and closing valve 34, which does not contact the end of the spiral blade shaft 19, and the manual opening and closing valve 34 is a manually opened and closed butterfly valve or ball valve. The viscous solder is added to the inside of the barrel 18 in advance, and the solder will gradually flow into the inside of the sleeve 16 under the action of gravity, and then under the action of the rotating spiral blade shaft 19, the solder inside the sleeve 16 is transported toward the feed head 20, and through the gap between the straight groove 21 and the grinding wheel, the solder is adhered to the outer ring surface of the grinding wheel, wherein the opening and closing of the manual opening and closing valve 34 can control whether the solder is allowed to flow out of the straight groove 21, and the outer diameter of the bevel gear 15 distributed on the outer surface of the first rotating shaft 3 is larger than the outer diameter of the bevel gear 15 distributed at the end of the spiral blade shaft 19, so that one rotation of the first rotating shaft 3 can make the spiral blade shaft 19 rotate multiple times.

[0022] Example 2: Please refer to Figures 4 - 6 This embodiment is a further explanation of the above embodiment. The brazing material auxiliary adding unit includes a hinged frame plate 10 distributed above the sleeve 16, and the hinged frame plate 10 is fixed inside the external housing 1. The hinged frame plate 10 is located on the side of the first rotating shaft 3 away from the barrel 18. One end of the hinged frame plate 10 close to the barrel 18 is hingedly provided with two striking plates 11, and the other ends of the two striking plates 11 are symmetrically unfolded. The first rotating shaft 3 and the barrel 18 are between the two striking plates 11, and one end face of each striking plate 11 away from the first rotating shaft 3 is connected to the hinged frame plate 10. A first spring 12 is fixedly arranged between the first rotating shaft 3, and a toggle component is also arranged between the top of the first rotating shaft 3 and the two striking plates 11. The toggle component is used to slowly push the striking plate 11 away and then release it instantly, so that the end of the striking plate 11 strikes the surface of the barrel 18 under the elastic pressure of the first spring 12. When the first rotating shaft 3 rotates, the striking plate 11 can be triggered by the toggle component, so that the striking plate 11 can frequently strike the surface of the barrel 18. Through the transmission of vibration caused by the striking, the solder inside the barrel 18 can flow densely into the inside of the sleeve 16.

[0023] The toggle component includes a cam 14 fixedly mounted on the top of the first rotating shaft 3, and a protrusion 13 is fixedly arranged at one end of each striking plate 11 close to the cam 14, and the end of the protrusion 13 is in sliding contact with the outer surface of the cam 14. Figure 6 When the state of the first spring 12 is rotated counterclockwise, the two protrusions 13 can be pushed apart in sequence, and then the striking plate 11 is instantly reset under the action of the first spring 12.

[0024] The cam 14 includes a disc portion and a crescent portion fixed to the periphery of the disc portion, that is, after the cam 14 pushes the lug 13 to the maximum distance through the crescent portion, as the disc portion continues to rotate, the lug 13 will be separated from the tip of the crescent portion.

[0025] The barrel 18 is made of thin-walled hard plastic. When the end of the striking plate 11 hits the surface of the barrel 18, the barrel 18 can be slightly deformed, which is more convenient for the conduction of vibration force. A circular groove for accommodating the barrel 18 is provided on the top of the peripheral housing 1. The barrel 18 is also cylindrical, and the outer diameter of the barrel 18 is smaller than the inner diameter of the circular groove. A flexible corrugated plastic film is installed between the inner wall of the circular groove and the outer surface of the barrel 18 with glue. The flexible corrugated plastic film will not affect the deformation of the barrel 18, and can also prevent the solder splashed from the upper end of the barrel 18 from entering the interior of the peripheral housing 1 through the circular groove. Example 3: Please refer to Figure 7 and Figure 8, this embodiment is a further illustration of Embodiment 1. The third rotating shaft 8 on the same side is rotatably inserted into the interior of the rotating ball 7, and a rotating component is also provided inside the rotating ball 7. The rotating component includes a first sleeve 23 fixed inside the rotating ball 7, and the axis of the first sleeve 23 coincides with the radius of the rotating ball 7. A first sliding disk 24 is slidably assembled inside the first sleeve 23, and a push rod 26 that slidably penetrates the first sleeve 23 is fixedly provided at one end of the first sliding disk 24 away from the center of the rotating ball 7. A tension spring 25 is also fixedly provided between the end of the first sliding disk 24 away from the center of the rotating ball 7 and the first sleeve 23, and the tension spring 25 is distributed outside the push rod 26. One end of the third rotating shaft 8 extending into the interior of the rotating ball 7 is fixedly provided with a movable ratchet 22. The outer wall of the first sliding disk 24 is fixedly provided with a ratchet plate 27, and the ratchet plate 27 is movably engaged with the movable ratchet 22. The ratchet plate 27 is also slidably assembled with the first sleeve 23. An inclined arc plate 28 is provided around each rotating ball 7, and the inclined arc plate 28 is fixed to the outside of the peripheral housing 1. A braking member is also provided between the outer wall of the third rotating shaft 8 and the rotating ball 7. When the rotating ball 7 drives the push rod 26 to rotate, the end of the push rod 26 will first contact the outer wall of the inclined arc plate 28, and the inclined arc plate 28 will gradually press the push rod 26, causing the push rod 26 to drive the first sliding disk 24 to move towards the center of the rotating ball 7. During the movement, meshing rotation will occur between the ratchet plate 27 and the movable ratchet 22. After the push rod 26 separates from the inclined arc plate 28, when the first sliding disk 24 and the ratchet plate 27 are reset under the action of the tension spring 25, the ratchet plate 27 will not engage and rotate with the movable ratchet 22 at this time.

[0026] The braking member includes a plurality of circular arc positioning grooves 33 that are circumferentially and equidistantly distributed on the outer surface of the third rotating shaft 8. A second sleeve 29 is fixedly provided on the outer wall of the rotating ball 7, and the axis of the second sleeve 29 is perpendicular to the axis of the third rotating shaft 8. A second sliding disk 30 is slidably assembled inside the second sleeve 29. A dome-shaped braking rod 32 is fixedly provided at one end of the second sliding disk 30 close to the third rotating shaft 8, and the dome-shaped end of the dome-shaped braking rod 32 is movably fitted inside the circular arc positioning groove 33. A second spring 31 is fixedly provided between the end of the second sliding disk 30 away from the dome-shaped braking rod 32 and the second sleeve 29. By the pressure of the second spring 31, the end of the dome-shaped braking rod 32 is fitted inside the circular arc positioning groove 33, which can play a role in temporarily fixing the third rotating shaft 8. When a torsional force is generated between the third rotating shaft 8 and the rotating ball 7, the third rotating shaft 8 will push out the dome-shaped end of the dome-shaped braking rod 32 through the circular arc positioning groove 33, causing the dome-shaped end of the dome-shaped braking rod 32 to be fitted inside another circular arc positioning groove 33 due to the rotation of the third rotating shaft 8. Working principle: First, the solder is fully mixed with the water glue, and the wet and viscous solder is poured into the interior of the cartridge 18 in advance. Then, the grinding wheel to be coated with solder is assembled through the motor and the connector outside the peripheral housing 1. The grinding wheel is moved between the two nylon brush heads 9, and the straight groove 21 can be buckled on the outside of the grinding wheel. After the position is adjusted, the motor 2 is started while keeping the grinding wheel rotating counterclockwise; When the motor 2 is just started, the manual opening and closing valve 34 is in the closed state, and the staff needs to manually open the manual opening and closing valve 34. At this time, the first rotating shaft 3 drives the two rotating balls 7 and the two third rotating shafts 8 to rotate synchronously and reversely through the meshing of the worm 5 and the worm gear 6, so that the brushes of the nylon brush heads 9 can frequently brush on the outer ring surface of the grinding wheel to attach Figure 4 Taking the state of... as an example, it is preferably that the two nylon brush heads 9 rotate towards each other at the same time. Under the action of the two bevel gears 15, the first rotating shaft 3 can also drive the spiral blade shaft 19 to rotate at the same time, transferring the solder flowing into the interior of the sleeve 16 towards the direction of the feeding head 20 until the solder flows out through the gap between the straight groove 21 and the grinding wheel, so that the viscous solder adheres to the outer surface of the grinding wheel. When the nylon brush head 9 contacts the solder during rotation, it can evenly apply the solder adhering to the surface of the grinding wheel on the outer ring surface of the grinding wheel. When the staff observes that the solder on the outer ring surface of the grinding wheel has been evenly applied, then the manual opening and closing valve 34 is closed to stop the discharge of the solder, and then the grinding wheel is removed, and the solder coating work on the grinding wheel is completed; During the rotation of the first rotating shaft 3, the cam 14 can also push and then instantaneously release the two bumps 13 in sequence. When the striking plate 11 quickly returns under the action of the first spring 12 in the compressed state, the end of the striking plate 11 can strike the surface of the cartridge 18. Through the vibration transmission of the knocking, the solder inside the cartridge 18 can flow densely into the interior of the sleeve 16, avoiding the situation that the space occupied by the air inside the sleeve 16 is larger than the space occupied by the solder, thereby ensuring the stability of the solder delivery.

[0027] By installing multiple coating devices outside the vacuum brazing machine, it can effectively replace manual labor to automatically coat the outer ring surface of the grinding wheel with solder. The solder coating efficiency is high, and it saves labor, and is more suitable for the brazing processing of a batch of micro-edge grinding wheels.

[0028] In this solution, every time the rotating ball 7 drives the third rotating shaft 8 to make a full turn, the inclined arc plate 28 can press and release the push rod 26 once. During the pressing process, through the engagement of the ratchet plate 27 and the movable ratchet wheel 22, the third rotating shaft 8 can drive the nylon brush head 9 to rotate a certain angle slightly. When the inclined arc plate 28 separates from the push rod 26, the push rod 26 and the ratchet plate 27 will reset under the action of the tension spring 25. In this way, it can be realized that the nylon brush head 9 will also rotate during the process of coating the filler metal, thus avoiding the situation that the nylon brush head 9 only coats the filler metal through one angle, resulting in uneven adhesion of the filler metal on the surface of the nylon brush head 9, and ultimately affecting the effect of coating the filler metal on the outer ring of the grinding wheel by the nylon brush head 9; Moreover, during the process of coating the filler metal, a layer of diamond particles has been temporarily adhered to the outer surface of the grinding wheel. If the nylon brush head 9 can only contact the grinding wheel at one angle, then under the friction of the diamond particles, the wear degree of the bristles of the nylon brush head 9 will be different. Eventually, it will show that the bristles on one side of the nylon brush head 9 are severely worn, while the bristles on the other side are slightly worn, resulting in a low service life of the nylon brush head 9. If the nylon brush head 9 can also rotate frequently during the process of coating the filler metal to change the contact position between the nylon brush head 9 and the grinding wheel, the bristles of the nylon brush head 9 can be evenly worn, thereby increasing the service life of the nylon brush head 9.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum brazing device for machining a composite process micro-edge grinding wheel, characterized in that, Including: A peripheral device housing (1) fixedly installed outside the vacuum brazing machine. A side wall of the peripheral device housing (1) is provided with a filler metal coating unit for evenly coating the filler metal on the outer ring surface of the grinding wheel. An upper part of the filler metal coating unit is further provided with a filler metal conveying unit for adhering the filler metal to the outer ring surface of the grinding wheel. A motor (2) is fixedly installed inside the peripheral device housing (1) and is used to drive the filler metal conveying unit and the filler metal coating unit to operate simultaneously. A filler metal auxiliary adding unit for evenly and continuously transporting the filler metal into the filler metal conveying unit. The filler metal auxiliary adding unit is arranged at the inner top of the peripheral device housing (1).

2. The vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 1, wherein: The filler metal coating unit includes two symmetrically distributed rotating balls (7) rotatably arranged on an outer wall of the peripheral device housing (1). An output end of the motor (2) is fixedly provided with a first rotating shaft (3) which is vertically upward. Two second rotating shafts (4) are rotatably arranged inside the peripheral device housing (1), and one ends of the two second rotating shafts (4) are respectively fixed to the two rotating balls (7). A worm gear (6) is fixedly sleeved on an outer surface of each second rotating shaft (4), and a worm (5) in transmission engagement with the worm gear (6) is fixedly sleeved on an outer surface of the first rotating shaft (3). One end of the rotating ball (7) far from the second rotating shaft (4) is provided with a third rotating shaft (8), and the other end of the third rotating shaft (8) is fixedly provided with a nylon brush head (9). The second rotating shaft (4) and the third rotating shaft (8) on the same side are in an obtuse angle shape.

3. The vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 2, wherein: The third rotating shaft (8) on the same side is rotatably inserted into the rotating ball (7), and a rotating component is further arranged inside the rotating ball (7). The rotating component includes a first sleeve (23) fixed inside the rotating ball (7). A first sliding disk (24) is slidably assembled inside the first sleeve (23). One end of the first sliding disk (24) far from the center of the rotating ball (7) is fixedly provided with a push rod (26) slidably penetrating through the first sleeve (23). A tension spring (25) is further fixedly arranged between one end of the first sliding disk (24) far from the center of the rotating ball (7) and the first sleeve (23). One end of the third rotating shaft (8) extending into the rotating ball (7) is fixedly provided with a movable ratchet wheel (22). A ratchet plate (27) is fixedly arranged on an outer wall of the first sliding disk (24), and the ratchet plate (27) is in movable engagement with the movable ratchet wheel (22). An inclined arc plate (28) is arranged around each rotating ball (7), and the inclined arc plate (28) is fixed outside the peripheral device housing (1). A braking member is further arranged between an outer wall of the third rotating shaft (8) and the rotating ball (7).

4. A vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 3, characterized in that: The brake component comprises a plurality of circular arc positioning grooves (33) which are equidistantly distributed on the outer surface of the third rotating shaft (8); a second sleeve (29) is fixedly arranged on the outer wall of the rotating ball (7); a second sliding plate (30) is slidably mounted inside the second sleeve (29); a dome brake rod (32) is fixedly arranged at one end of the second sliding plate (30) close to the third rotating shaft (8); a dome-shaped top end of the dome brake rod (32) is movably mounted inside the circular arc positioning groove (33); and a second spring (31) is arranged between one end of the second sliding plate (30) away from the dome brake rod (32) and the second sleeve (29).

5. A vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 2, characterized in that: The solder delivery unit comprises a sleeve (16) fixedly mounted inside the external housing (1), the sleeve (16) being located above the worm (5), and the axis of the sleeve (16) being perpendicular to the axis of the first rotating shaft (3), the sleeve (16) being internally rotatably equipped with a spiral blade shaft (19), a bevel gear (15) being fixedly mounted between an end of the sleeve (16) close to the first rotating shaft (3) and an outer surface of the first rotating shaft (3), and the two bevel gears (15) being movably meshed, the sleeve (16) being arranged to rotate with the first rotating shaft (3). One end of the sleeve (16) away from the bevel gear (15) is threadedly mounted with a butt joint (17); one end of the butt joint (17) away from the bevel gear (15) is fixedly connected to a feed head (20), and the other end of the feed head (20) is provided with a straight groove (21); a barrel (18) is placed inside the external housing (1), and the bottom of the barrel (18) is fixedly connected to the outer surface of the sleeve (16); and a manual opening and closing valve (34) is also mounted on the outer surface of the sleeve (16) or the butt joint (17).

6. The vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 5, wherein: The solder auxiliary adding unit comprises an articulated frame plate (10) distributed above the sleeve (16), and the articulated frame plate (10) is fixed inside the external housing (1), and one end of the articulated frame plate (10) close to the barrel (18) is hingedly provided with two striking plates (11), and the other ends of the two striking plates (11) are symmetrically unfolded, the first rotating shaft (3) and the barrel (18) are located between the two striking plates (11), and a first spring (12) is fixedly provided between an end surface of each striking plate (11) away from the first rotating shaft (3) and the articulated frame plate (10), and a toggle component is also provided between the top of the first rotating shaft (3) and the two striking plates (11), and the toggle component is used to slowly push the striking plate (11) away and then release it instantly, so that the end of the striking plate (11) strikes the surface of the barrel (18) under the elastic pressure of the first spring (12).

7. A vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 6, characterized in that: The shifting component comprises a cam (14) fixedly mounted on the top of the first rotating shaft (3), and a protrusion (13) is fixedly provided on one end of each striking plate (11) close to the cam (14).

8. A vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 7, characterized in that: The cam (14) includes a disc portion and a crescent portion fixed to the periphery of the disc portion.

9. The vacuum brazing device for machining a composite process micro-edge grinding wheel according to claim 6, wherein: The cartridge (18) is made of hard plastic.

10. A processing method of a vacuum brazing device for machining a composite process micro-edge grinding wheel according to any one of claims 1-9, characterized in that: The method includes the following steps: S1. Place the grinding wheel between two nylon brush heads (9) so that the outer ring surface of the grinding wheel can contact the bristles of the two nylon brush heads (9). At the same time, let the straight groove (21) be sleeved on the outer ring surface of the grinding wheel, and keep the grinding wheel rotating self - rotatably in this state. S2. Start the motor (2). Driven by the first rotating shaft (3) on the spiral blade shaft (19), convey the wet solder towards the feeding head (20), and make the solder adhere to the outer ring surface of the grinding wheel through the straight groove (21). Under the action of the worm (5) and the worm gear (6), make the two nylon brush heads (9) rotate simultaneously to smear the solder adhered to the outer ring surface of the grinding wheel evenly. S3. After the solder on the outer ring of the grinding wheel is smeared evenly, put the grinding wheel into the internal part of the vacuum brazing machine for vacuum high - temperature brazing treatment.

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