Multi-functional grinding wheel dressing device

Abstract

The present application relates to a kind of multifunctional grinding wheel dressing device, including swing arm type grinding wheel dressing system and embedded cooling system, swing arm type grinding wheel dressing system is supported in the cavity of left shell and right shell by conical roller bearing with main shaft, after pressure oil enters the oil cavity between fixed block and movable block, movable block is pushed to swing relative to fixed block, so that the main shaft and swing arm fixed with movable block swing, swing arm side is connected with dresser seat, and multiple dressing pens are externally arranged on dresser seat;Inner embedded cooling system cooling liquid passage is arranged in main shaft, and cooling liquid is supplied to dressing pen through the cooling liquid passage embedded in swing arm and dresser seat, to realize the cooling of grinding wheel and dressing pen during dressing.The present application avoids the interference between grinding wheel in dressing and processing two actions by swinging action;Multiple dressing pens are installed in the device and are supplied with cooling liquid through embedded cooling liquid passage, to realize the dressing of multiple grinding tools, to meet the design requirements of multiple grinding tool dressing device of composite grinding machine.

Description

TECHNICAL FIELD

[0001] The present application relates to a grinding wheel tool dressing device, in particular to a multifunctional grinding wheel dressing device. BACKGROUND

[0002] In order to improve the grinding efficiency, the application of composite machining technology is more and more widely, and its composite grinding machine products have achieved good feedback in the market. The composite grinding machine is generally equipped with multiple grinding wheel tools such as cylindrical grinding wheel, face cylindrical grinding wheel and internal cylindrical grinding wheel. After clamping the workpiece once, different grinding wheel tools are switched according to different machining surfaces.

[0003] The grinding wheel tool is also called a bonded abrasive tool, which is formed by a binder to combine ordinary abrasive into a certain shape and has a certain strength. The grinding process gradually wears and loses the processing capacity, and needs to be dressed. The traditional cylindrical grinding machine and internal cylindrical grinding machine set corresponding grinding wheel dressing devices according to their processing needs. For the composite machining grinding machine, corresponding grinding wheel dressing devices can be set for cylindrical grinding wheel, face cylindrical grinding wheel and internal cylindrical grinding wheel. This method of setting grinding wheel dressing devices according to dressing needs cannot meet the needs of the composite machining grinding machine for rapid dressing of the grinding wheel, which not only affects the machining efficiency of the machine tool, but also increases the cost of the machine tool by installing multiple grinding wheel dressing devices and corresponding grinding fluid supply systems on one machine tool. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a multifunctional grinding wheel dressing device. The dressing device can be used to dress cylindrical grinding wheel, face cylindrical grinding wheel and internal cylindrical grinding wheel respectively. Through the cooling system embedded in the device, effective cooling of the dressing grinding wheel is realized, which greatly saves the installation space.

[0005] To solve the above technical problems, the present application adopts the following technical solutions:

[0006] The utility model provides a multifunctional grinding wheel dressing device, including swing arm type grinding wheel dressing system, embedded cooling system, swing arm type grinding wheel dressing system is supported in the cavity of body shell through tapered roller bearing, and sets up fixed tile in the body shell, sets up movable tile on the main shaft, and the front and back oil cavity is formed between movable tile and fixed tile, and the front and back oil cavity is connected with the oil tank through pressure oil channel respectively, and the end of main shaft is fixedly connected with swing arm, and swing arm is rotated with the swing of movable tile relative to fixed tile, and the interference between grinding wheel dressing and processing is avoided, and a plurality of dressing pens are installed on one side of swing arm through dresser seat, and embedded cooling system is connected with the embedded cooling liquid channel of swing arm through the cooling liquid channel of main shaft, and the cooling liquid channel is used for supplying the cooling liquid to the dresser seat of dressing pen, and the dressing of a plurality of grinding tools such as external grinding wheel, end face external grinding wheel and internal grinding wheel is realized.

[0007] Further, the swing arm type grinding wheel dressing system includes a left body shell, a right body shell, a main shaft, a tapered roller bearing, a locking nut, a swing arm, a dresser seat, a front dressing seat, and a rear dressing seat. The swing arm front side is fixedly connected with the dresser seat, and the swing arm rear end right side is fixedly connected with the main shaft through a counterbore. The left body shell is positioned and installed with an outer ring of the tapered roller bearing B through a stepped hole B. An inner ring of the tapered roller bearing B is positioned and installed on a first shaft shoulder and a first shaft neck section of the main shaft. The right body shell is positioned and installed with an outer ring of the tapered roller bearing A through a counterbore. An inner ring of the tapered roller bearing A is positioned and installed on a third shaft shoulder and a second shaft neck section of the main shaft. A threaded shaft end outside of the main shaft is provided with the locking nut, which plays a role in axial positioning of the inner ring of the tapered roller bearing A, so that the main shaft is supported in the left body shell and the right body shell through the tapered roller bearing A and the tapered roller bearing B.

[0008] Further, a sealing ring C is arranged in the stepped hole A of the left body shell, and the inner side of the sealing ring C is in frictional sliding contact with the outer cylindrical surface of the main shaft large end, so as to prevent dirt from entering. An end cover is arranged outside the locking nut, and the left side of the end cover is fixedly connected with the right side counterbore of the right body shell through a boss.

[0009] Further, the left body shell is connected with a T-shaped nut and a screw and a front and rear horizontal T-shaped through slot opened in the middle position of the upper surface of the base through the T-shaped nut and the screw, and the left body shell can be dynamically adjusted in position in the front and rear horizontal direction of the base according to different grinding wheel diameters. The lower surface of the base is in contact with the upper surface of the workbench, and the dresser base can be dynamically adjusted in position in the left and right horizontal direction of the workbench. After the position is determined, the base is fixed with the workbench through a pressing plate.

[0010] Further, the right side of the left body shell is fixedly installed with a fixed tile block below the counterbore, which is in the shape of a bearing bush; the main shaft is provided with an equal-diameter shaft segment corresponding to the second shaft shoulder, and the shaft segment is fixedly connected with the movable tile block outside the shaft segment through three threaded holes arranged at the middle position of the shaft segment; the movable tile block is in the shape of a bearing bush, and the upper side, left side and right side of the movable tile block are slidably connected with the cylindrical surface and the side surface of the right side counterbore of the left body shell and the left side surface of the right body shell respectively; the front side of the fixed tile block is provided with a communicating pressure oil passage C and a pressure oil passage D, and the rear side of the fixed tile block is provided with a pressure oil passage A and a pressure oil passage B; the right body shell is provided with a pressure oil passage E and a pressure oil passage F, the pressure oil passage F communicates with the pressure oil passage A, and the pressure oil passage E communicates with the pressure oil passage C; an oil chamber B is formed between the front oil cavity surface B of the movable tile block and the front oil cavity surface A of the fixed tile block, and an oil chamber A is formed between the rear oil cavity surface B of the movable tile block and the rear oil cavity surface A of the fixed tile block; the pressure oil passages F and E are connected with the oil tank through a pressure oil inlet and outlet end, and the pressure oil acts on the front oil cavity surface B and the rear oil cavity surface B of the movable tile block to make the main shaft swing.

[0011] Further, a sealing ring B is arranged between the through hole of the left body shell and the main shaft, a sealing ring A is arranged between the right body shell and the main shaft, and an O-shaped ring C is arranged between the right side of the left body shell and the right body shell to form the oil chamber A and the oil chamber B.

[0012] Further, the swing arm is fixedly connected with a signaling block through a screw, and the signaling block swings with the swing arm; a proximity switch is fixedly connected with the rear side and the upper side of the left body shell through a proximity switch base respectively.

[0013] Further, the upper part of the trimmer seat is fixedly connected with a front trimmer seat and a rear trimmer seat on the front and rear surfaces through a screw; the front trimmer seat is provided with three diamond pens of different angles on the same horizontal plane, which are distributed to trim different types of grinding wheels, wherein the diamond pen A trims an end face outer circle grinding wheel B, the diamond pen B trims an outer circle grinding wheel, and the diamond pen C trims an end face outer circle grinding wheel A; the rear trimmer seat is fixedly connected with a diamond pen D, which is used to trim an inner circle grinding wheel.

[0014] Further, the embedded cooling system comprises a cooling core shaft, a spring, a steel ball, a thimble and a positioning stud, a through hole is formed in the middle of the cooling core shaft for circulating cooling liquid, the cooling core shaft is installed in the through hole in the main shaft, the left end of the cooling core shaft is connected with the blind hole in the positioning hole in the right side of the rear end of the swing arm, the through hole in the cooling core shaft is communicated with the cooling liquid passage A, the right end of the cooling core shaft is fixedly connected with the end cover through external threads, and the right end of the cooling core shaft is connected with the external pipeline through the taper threads in the through hole and is communicated with the external water tank; the swing arm is internally provided with the cooling liquid passage A, the cooling liquid passage B and the cooling liquid passage C, the spring, the steel ball, the thimble and the positioning stud are sequentially arranged in the cooling liquid passage B from top to bottom, and the cooling liquid in the external water tank sequentially flows into the cooling liquid passage A through the external pipeline and the cooling core shaft; when the grinding wheel dressing device is in a non-working state, the swing arm is erected, the steel ball is tightly connected with the circular pit on the upper surface of the positioning stud under the elastic force of the spring, and the circulation of the cooling liquid is prevented; when the grinding wheel dressing device enters a working state, the swing arm performs swing arm movement, the bottom of the thimble is in contact with the bottom of the V-shaped groove of the positioning block, the thimble lifts up the steel ball against the spring elastic force, the cooling liquid in the cooling liquid passage A flows into the cooling liquid passage C through the positioning stud, and the cooling liquid smoothly circulates in the internal cooling liquid passage of the swing arm; the dresser seat is internally provided with the cooling liquid passage D, the cooling liquid passage E, the cooling liquid passage F, the cooling liquid passage G and the cooling liquid passage H, the cooling liquid passage D is communicated with the internal cooling liquid passage C of the swing arm, the cooling liquid passage E communicates the cooling liquid passage D and the cooling liquid passage F, and the cooling liquid passage F is communicated with the cooling liquid passage G and the cooling liquid passage H; the external ends of the cooling liquid passage F, the cooling liquid passage G and the cooling liquid passage H are respectively provided with the joint A, the joint B, the joint C and the joint D, the cooling joint A is correspondingly connected with the switch A, the cooling water pipe A and the spray head A, cooling is provided when the end face external circle grinding wheel A is dressed; the cooling joint B is correspondingly connected with the switch B, the cooling water pipe B and the spray head B, cooling is provided when the external circle grinding wheel is dressed; the cooling joint C is correspondingly connected with the switch C, the cooling water pipe B and the spray head B, cooling is provided when the internal circle grinding wheel is dressed; and the cooling joint D is correspondingly connected with the switch D, the cooling water pipe D and the spray head D, cooling is provided when the end face external circle grinding wheel B is dressed.

[0015] Further, when the swing arm is turned to the working position, the thimble hits the bottom of the V-shaped groove of the positioning block, meanwhile, the lower tapered structure of the positioning stud is matched with the V-shaped groove, so that the positioning effect is achieved, the positioning block is horizontally fixed on the upper surface of the positioning block base through a screw, and the positioning block base is horizontally fixed on the left side surface of the base through a screw.

[0016] The application has the following beneficial effects:

[0017] The present application supports the main shaft in the cavity composed of the left shell and the right shell through the tapered roller bearing in the swing arm type grinding wheel dressing system, relies on the pressure oil into the oil cavity between the fixed block and the movable block to push the movable block to swing relative to the fixed block, so that the swing arm fixed with the main shaft rotates and swings together, avoids the interference between the grinding wheel dressing and processing, occupies smaller machine tool space; a plurality of dressing pens are installed on the dresser seat connected on the swing arm, the cooling liquid channel in the main shaft is connected with the cooling liquid channel embedded in the swing arm in the embedded cooling system, the cooling liquid channel supplies the dressing pens with dressing cooling liquid, realizes the dressing of multiple grinding wheels and cutters such as the outer circle grinding wheel, the end face outer circle grinding wheel and the inner circle grinding wheel, and a set of device meets the needs of the composite grinding and processing dressing device; the present application has simple structure and is a widely practical grinding wheel dressing device, which can greatly reduce the cost of machine tools. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the left view of the multifunctional grinding wheel dressing device of the present application.

[0019] Figure 2 It is the sectional view along A-A of the multifunctional grinding wheel dressing device of the present application.

[0020] Figure 3 It is the partial sectional view along B-B of the multifunctional grinding wheel dressing device of the present application.

[0021] Figure 4 It is the partial sectional view along C-C of the multifunctional grinding wheel dressing device of the present application.

[0022] Figure 5 It is the K direction partial view of the multifunctional grinding wheel dressing device of the present application.

[0023] Figure 6 It is the partial sectional view of the dresser seat of the multifunctional grinding wheel dressing device of the present application.

[0024] Figure: 1-pressing plate; 2-workbench; 3-base; 4-left body shell; 5-proximity switch base A; 6-proximity switch A; 7-swing arm; 8-plug A; 9-screw A; 10-screw B; 11-signaling block; 12-proximity switch base B; 13-proximity switch B; 14-positioning block base; 15-positioning block; 16-plug B; 17-trimmer base; 18-positioning stud; 19-plug C; 20-O-ring A; 21-thimble; 22-O-ring B; 23-steel ball; 24-spring; 25-front trimmer base; 26-diamond B; 27-diamond A; 28-switch A; 29-jet B; 30-jet A; 31-cooling liquid pipe A; 32-cooling liquid pipe B; 33-joint B; 34-switch B; 35-rear trimmer base; 36-joint A; 37-diamond D; 38-jet C; 39-cooling liquid pipe C; 40-cooling liquid channel E; 41-cooling liquid channel D; 42-cooling liquid channel C; 43-cooling liquid channel B; 44-cooling liquid channel A; 45-positioning block; 46-right body shell; 47-sealing ring A; 48-cone roller bearing A; 49-end cover; 50-tapered screw thread; 51-cooling mandrel; 52-lock nut; 53-main shaft; 54-moving block; 55-sealing ring B; 56-O-ring C; 57-sealing ring C; 58-O-ring D; 59-cone roller bearing B; 60-stepped hole B; 61-stepped hole A; 62-joint D; 63-switch D; 64-cooling liquid pipe D; 65-jet D; 66-joint C; 67-switch C; 68-diamond C; 69-end face cylindrical grinding wheel A; 70-end face cylindrical grinding wheel B; 71-cylindrical grinding wheel; 72-inner cylindrical grinding wheel; 73-pressure oil passage A; 74-pressure oil passage B; 75-rear oil cavity face A; 76-oil cavity A; 77-rear oil cavity face B; 78-pressure oil passage C; 79-pressure oil passage D; 80-front oil cavity face A; 81-oil cavity B; 82-front oil cavity face B; 83-pressure oil passage E; 84-pressure oil passage F; 85-cooling liquid channel F; 86-cooling liquid channel G; 87-cooling liquid channel H. DETAILED DESCRIPTION

[0025] The application will be further described below in conjunction with the drawings and examples.

[0026] As Figures 1 to 6 shown, the multifunctional grinding wheel trimming device of the application comprises a swing arm type grinding wheel trimming system and an embedded cooling system.

[0027] As Figure 1 , Figure 2As shown, the swing arm type grinding wheel dressing system mainly includes a left body shell 4, a right body shell 46, a spindle 53, a tapered roller bearing A48, a tapered roller bearing B59, a lock nut 52, a swing arm 7, a dresser seat 17, a front dresser seat 25, and a rear dresser seat 35. The front side of the swing arm 7 is fixed to the dressing holder 17 by screws. The rear right side of the swing arm 7 is provided with a countersunk hole to position and fix the main shaft 53. The main shaft 53 is a multi-step shaft, and its shaft diameter decreases from left to right to form a first shoulder, a second shoulder, a third shoulder, and a fourth shoulder. Corresponding to the first shoulder, the third shoulder, and the fourth shoulder, there are a first journal section, a second journal section, and a threaded shaft section. The left body shell 4 has a through hole in the middle and a stepped hole A61 and a stepped hole B60 concentric with the through hole. The right side of the left body shell 4 has a countersunk hole concentric with the stepped hole B60. The right body shell 46 has a through hole in the middle and a countersunk hole concentric with the through hole. The left side of the right body shell 46 is connected to the left body shell by a round boss. 4. The right side is fixed by countersunk hole positioning; the left body shell 4 is positioned and installed with the outer ring of the tapered roller bearing B59 through the stepped hole B60; the inner ring of the tapered roller bearing B59 is positioned and installed on the first shoulder and the first journal section of the main shaft 53; the right body shell 46 is positioned and installed with the outer ring of the tapered roller bearing A48 through countersunk hole positioning; the inner ring of the roller bearing A48 is positioned and installed on the third shoulder and the second journal section of the main shaft 53; a lock nut 52 is installed on the outer side of the threaded shaft end of the main shaft 53, and the lock nut 52 plays an axial positioning role for the inner ring of the tapered roller bearing A48, so that the main shaft 53 is supported by the roller bearings A48 and B59 at two points in the left body shell 4 and the right body shell 46.

[0028] A sealing ring C57 is provided inside the stepped hole A61 of the left body shell. The inner side of the sealing ring C57 makes frictional sliding contact with the outer cylindrical surface of the large end of the main shaft 53 to prevent dirt from entering. An end cover 49 is provided outside the locking nut 52. The left side of the end cover 49 is fixedly connected to the right countersunk hole of the right body shell 46 through a boss.

[0029] The upper surface of the base 3 has a T-shaped through groove with horizontal front and back at the middle position. The base 3 is fixed to the left body shell 4 by screws A9, screws B10 and T-nuts. The position of the left body shell 4 can be dynamically adjusted in the front and back horizontal direction according to the different diameters of the dressing wheel. The lower surface of the base 3 is in contact with the upper surface of the worktable 2. The dressing base 3 can be dynamically adjusted in the left and right horizontal direction of the worktable 2. After the position is determined, the base 3 is fixed to the worktable 2 by the pressure plate 1.

[0030] Signal block 11 is fixed to the swing arm 7 with screws and swings with the swing arm 7; proximity switch base A5 is fixed to the rear side of the left body shell 5 with screws, which serves to fix proximity switch A6; proximity switch base B12 is fixed to the upper side of the left body shell 5 with screws, which serves to fix proximity switch B13.

[0031] like Figure 1 and Figure 3As shown, the lower part of the rear end face of the dresser seat 17 has a countersunk hole, which is fixed to the swing arm 7 by screws. The upper part of the dresser seat 17 has a threaded through hole, and the front dresser seat 25 and the rear dresser seat 35 are fixed to the front and rear sides respectively by screws. The front dresser seat 25 is equipped with three diamond pens at different angles on the same horizontal plane, which are distributed to dress different types of grinding wheels. Diamond pen A27 dresses the outer diameter grinding wheel B70, diamond pen B26 dresses the outer diameter grinding wheel 71, and diamond pen C68 dresses the outer diameter grinding wheel A69. The rear dresser seat 35 fixes diamond pen D37, which is used to dress the inner diameter grinding wheel 72.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, a fixed bearing block 45 is fixedly installed on the side below the countersunk hole on the right side of the left body shell 4. The fixed bearing block 45 is shaped like a bearing bush. The main shaft 53 has a shaft section of equal diameter corresponding to the second shoulder. The middle position of this shaft section is fixedly connected to the moving bearing block 54 on its outer side through three threaded holes. The moving bearing block 54 is shaped like a bearing bush. The upper side, left side and right side of the moving bearing block 54 form a sliding connection with the cylindrical surface and side surface of the countersunk hole on the right side of the left body shell 4 and the left side surface of the right body shell 46, respectively. The front side of the fixed bearing block 45 has a connecting pressure oil passage C78 and a pressure oil passage D79. The rear side of the fixed bearing block 45 has a connecting pressure oil passage A73 and a pressure oil passage B74. The right body shell 46 has a pressure oil passage E83 and a pressure oil passage F84. The pressure oil passage F84 is connected to the pressure oil passage A73. The pressure oil passage E83 is connected to the pressure oil passage C78; an oil cavity B81 is formed between the front oil cavity surface B82 of the moving bearing 54 and the front oil cavity surface A80 of the fixed bearing 45, and an oil cavity A76 is formed between the rear oil cavity surface B77 of the moving bearing 54 and the rear oil cavity surface A75 of the fixed bearing 45; the pressure oil passage F84 and the pressure oil passage E83 are connected to the outside of the oil tank to transport pressure oil in and out. The pressure oil acts on the front oil cavity surface B82 and the rear oil cavity surface B77 of the moving bearing 54, causing the main shaft 53 to swing; a sealing ring B55 is provided between the middle of the through hole of the left body shell 4 and the main shaft 53; a sealing ring A47 is provided between the right body shell 46 and the main shaft 53; an O-ring C56 is provided between the right side of the left body shell 4 and the right body shell 46 to form a seal for the pressure oil in the oil cavities A76 and B81.

[0033] like Figure 1 , Figure 2 and Figure 6As shown, the embedded cooling system mainly includes a cooling spindle 51, a rocker arm 7, a dresser seat 17, a spring 24, a steel ball 23, a ejector pin 21, and a positioning stud 18. The cooling spindle 51 has a through hole in the middle for coolant flow. The cooling spindle 51 is installed inside the through hole of the main spindle 53. The left end of the cooling spindle 51 connects to a blind hole in the right-side positioning countersunk hole at the rear end of the rocker arm 7. The through hole inside the cooling spindle 51 communicates with the coolant channel A44. The right end of the cooling spindle 51 is fixed to the end cap 49 via an external thread. The right end of the cooling spindle 51 is connected to an external pipe via a tapered thread 50 inside the through hole, communicating with an external water tank. The rocker arm 7 has coolant channels A44, B43, and C42 inside. Inside coolant channel B43, from top to bottom, are placed the spring 24, steel ball 23, ejector pin 21, and positioning stud 18. 8. The coolant in the external water tank flows into the coolant channel A44 through the external pipe and the cooling mandrel 51 in sequence. When the grinding wheel dressing device is not in operation, the swing arm 7 is raised, and the steel ball 23 is tightly connected to the circular pit on the upper surface of the positioning stud 18 under the elastic force of the spring 24, preventing the coolant from flowing. When the grinding wheel dressing device is in operation, the swing arm 7 swings, and the bottom of the ejector pin 21 contacts the bottom of the V-groove of the positioning block 15. The ejector pin 21 overcomes the elastic force of the spring 24 and lifts the steel ball 23. The coolant in the coolant channel A44 flows into the coolant channel C42 through the positioning stud 18. The coolant flows smoothly in the coolant channel inside the swing arm 7.

[0034] The upper surface of the positioning block 15 has a V-shaped groove. When the swing arm 7 is flipped to the working position, the ejector pin 21 strikes the bottom of the V-shaped groove of the positioning block 15. At the same time, the lower conical structure of the positioning column 18 cooperates with the V-shaped groove to play a positioning role. The positioning block 15 is horizontally fixed to the upper surface of the positioning block base 14 by screws. The positioning block base 14 is horizontally fixed to the left side of the base 3 by screws.

[0035] The dressing holder 17 has coolant passages D41, E40, F85, G86 and H87 inside. Coolant passage D41 is connected to coolant passage C42 inside the swing arm 7. Coolant passage E40 connects coolant passage D41 and coolant passage F85. Coolant passage F85 is connected to coolant passage G86 and coolant passage H87. Connectors A36, B33, C66, and D62 are respectively installed at the outer ends of coolant channels F85, G86, and H87. Cooling connector A36 is connected to switch A28, cooling water pipe A31, and nozzle A30, providing cooling when dressing the outer cylindrical grinding wheel A69. Cooling connector B33 is connected to switch B34, cooling water pipe B32, and nozzle B29, providing cooling when dressing the outer cylindrical grinding wheel 71. Cooling connector C66 is connected to switch C67, cooling water pipe B39, and nozzle B38, providing cooling when dressing the inner cylindrical grinding wheel 72. Cooling connector D62 is connected to switch D63, cooling water pipe D64, and nozzle D65, providing cooling when dressing the outer cylindrical grinding wheel B70. Plugs A8, B16, and C19 are installed at the ends of the coolant channels of each workpiece to prevent coolant leakage. O-rings A20, B22, and D58 are distributed at the coolant channel interfaces to provide a sealing function.

[0036] The specific working process of this invention is as follows:

[0037] like Figures 1 to 6As shown, the base 3 is fixed to a suitable position on the upper surface of the worktable 2 by the pressure plate 1. The relative positions of the left body shell 4 and the base 3 are dynamically adjusted according to the diameter of the grinding wheel to be dressed, and the left body shell 4 is fixed to the base 3 by screws A9 and B10. When dressing the grinding wheel begins, the pressurized oil in the external oil tank flows into the oil chamber B81 sequentially through pressurized oil passages E83, C78, ​​and D79. As the volume of pressurized oil inside the oil chamber B81 increases, the pressurized oil pushes the front oil chamber surface B82 of the moving bearing 54. The moving bearing 54 drives the spindle 53 to rotate, and the swing arm 7, which is fixed to the spindle 53, performs a swing arm movement. Simultaneously, the pressurized oil in the oil chamber A76 flows to the external oil tank sequentially through pressurized oil passages B74, A73, and F84. When proximity switch B13 receives a signal from signal block 11, it indicates that the swing arm 7 has completed its swing arm movement, the pressure oil volume inside oil chamber B81 has reached its maximum, there is no pressure oil inside oil chamber A76, and the rear oil chamber surface B77 is in contact with the rear oil chamber surface A75. At this time, the oil pressure inside oil chamber B81 is maintained, so that the moving bearing block 54 no longer rotates. At this time, the bottom of the ejector pin 21 is in contact with the bottom of the V-groove of the positioning block 15, the embedded cooling system starts to work, and the grinding wheel dressing device enters the working state, dressing different types of grinding wheels according to the actual situation. After the grinding wheel dressing is completed, the oil pressure in oil chamber B81 is released. The pressurized oil in oil chamber B81 flows into the external oil tank through pressurized oil passages D79, C78, ​​and E83, and the volume of pressurized oil in oil chamber B81 continuously decreases. At the same time, pressurized oil is added to oil chamber A76 through pressurized oil passages F84, A73, and B74. As the volume of pressurized oil inside oil chamber A76 continuously increases, the pressurized oil pushes the rear oil chamber surface A77 of the moving bearing 54, and the moving bearing 54 drives the spindle 53 to rotate. The swing arm 7, which is fixed to the spindle 53, swings back. When the swing arm 7 begins to swing back, the ejector pin 21 leaves the positioning block 15, and the embedded cooling system stops working. When the proximity switch A6 receives the signal from the signal block 11, it indicates that the swing arm 7 has completed the swing back action. At this time, the volume of pressurized oil inside the oil chamber A76 reaches its maximum, there is no pressurized oil inside the oil chamber B81, and the front oil chamber surface B82 contacts the front oil chamber surface A80 to maintain the oil pressure inside the oil chamber A76, so that the moving bearing block 54 no longer rotates, and the grinding wheel dresser is in a non-working state.

[0038] The above examples are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Anyone skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A multifunctional grinding wheel dressing device, characterized in that: The system includes a swing-arm type grinding wheel dressing system and an embedded cooling system. In the swing-arm type grinding wheel dressing system, the spindle is supported in the cavity of the housing by tapered roller bearings. A fixed bearing is installed in the housing, and a movable bearing is installed on the spindle. Front and rear oil chambers are formed between the movable and fixed bearings, respectively connected to the inlet and outlet of an external oil tank via pressurized oil passages. A swing arm is fixedly connected to one end of the spindle extending from the housing. Pressurized oil entering the oil chamber between the fixed and movable bearings pushes the movable bearing to swing relative to the fixed bearing, causing the swing arm, fixed to the spindle, to rotate and swing together, avoiding interference between grinding wheel dressing and machining. Multiple dressing pens are mounted on one side of the swing arm via a dressing holder. The embedded cooling system... The cooling fluid supply to the dressing tool is achieved by connecting the coolant channels within the spindle to the coolant channels embedded in the swing arm, thus supplying dressing coolant to the dressing tool in the dressing holder. This allows for the dressing of multiple grinding wheel tools, including external cylindrical grinding wheels, end-face external cylindrical grinding wheels, and internal cylindrical grinding wheels. The swing arm type grinding wheel dressing system includes a left body shell, a right body shell, a spindle, tapered roller bearings, a lock nut, a swing arm, a dressing holder, a front dressing holder, and a rear dressing holder. The front side of the swing arm is fixedly connected to the dressing holder, and the rear right side of the swing arm is fixedly connected to the spindle via a countersunk hole. The outer ring of the tapered roller bearing B is positioned and installed on the left body shell through a stepped hole B. The inner ring of the tapered roller bearing B is positioned and installed on the first shoulder and first journal section of the spindle. The right body shell is positioned and installed with a tapered roller bearing B through a countersunk hole. The outer ring of roller bearing A; the inner ring of roller bearing A is positioned and installed on the third shoulder and second journal section of the main shaft; a lock nut is installed on the outer side of the threaded shaft end of the main shaft, and the lock nut plays an axial positioning role for the inner ring of tapered roller bearing A, so that the main shaft is supported by two points, tapered roller bearing A and tapered roller bearing B, in the left and right housings; a fixed bearing block is fixedly installed on the side below the countersunk hole on the right side of the left housing, and the fixed bearing block is in the shape of a bearing bush; the main shaft has a shaft section of equal diameter corresponding to the second shoulder, and the middle position of the shaft section is fixedly connected to the moving bearing block on its outer side through three threaded holes; the moving bearing block is in the shape of a bearing bush, and the upper, left and right sides of the moving bearing block are respectively the cylindrical surface and side surface of the countersunk hole on the right side of the left housing and the right side surface of the countersunk hole. The left side of the body shell forms a sliding connection; the front side of the fixed bearing has a connecting pressure oil passage C and pressure oil passage D, and the rear side of the fixed bearing has a connecting pressure oil passage A and pressure oil passage B; the right body shell has a pressure oil passage E and pressure oil passage F, pressure oil passage F is connected to pressure oil passage A, and pressure oil passage E is connected to pressure oil passage C; an oil cavity B is formed between the front oil cavity surface B of the moving bearing and the front oil cavity surface A of the fixed bearing, and an oil cavity A is formed between the rear oil cavity surface B of the moving bearing and the rear oil cavity surface A of the fixed bearing; pressure oil passage F and pressure oil passage E are connected to the external pressure oil inlet and outlet of the oil tank, and the pressure oil acts on the front oil cavity surface B and the rear oil cavity surface B of the moving bearing respectively, causing the spindle to swing.

2. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: A sealing ring C is provided inside the stepped hole A of the left body shell. The inner side of the sealing ring C makes frictional sliding contact with the outer cylindrical surface of the large end of the main shaft to prevent dirt from entering. An end cap is provided outside the locking nut. The left side of the end cap is fixedly connected to the right countersunk hole of the right body shell through a boss.

3. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: The left body shell is connected to the front and rear horizontal T-shaped through groove in the middle of the upper surface of the base by T-nuts and screws. The position of the left body shell can be dynamically adjusted in the front and rear horizontal direction of the base according to the different diameters of the dressing wheel. The lower surface of the base contacts the upper surface of the worktable. The dressing base can be dynamically adjusted in the left and right horizontal direction of the worktable. After the position is determined, the base is fixed to the worktable by the pressure plate.

4. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: A sealing ring B is provided between the through hole of the left body shell and the main shaft; a sealing ring A is provided between the right body shell and the main shaft; and an O-ring C is provided between the right side of the left body shell and the right body shell, forming a seal for the pressure oil in oil chamber A and oil chamber B.

5. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: The signal transmitting block is fixedly connected to the swing arm by screws, and the signal transmitting block swings with the swing arm; a proximity switch is fixedly connected to the rear side and the upper side of the left body shell by a proximity switch base.

6. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: The upper part of the dressing holder is fixed to the front dressing seat and the rear dressing seat on the front and rear sides respectively by screws; the front dressing seat is equipped with three diamond pens at different angles on the same horizontal plane, which are distributed to dress different types of grinding wheels. Among them, diamond pen A dresses the outer diameter grinding wheel B, diamond pen B dresses the outer diameter grinding wheel, and diamond pen C dresses the outer diameter grinding wheel A; the rear dressing seat is fixedly connected to diamond pen D, which is used to dress the inner diameter grinding wheel.

7. The multifunctional grinding wheel dressing device according to claim 1, characterized in that: The embedded cooling system includes a cooling mandrel, spring, steel ball, ejector pin, and positioning stud. The cooling mandrel has a through hole in the center for coolant flow. The mandrel is installed inside the through hole of the main shaft. The left end of the cooling mandrel connects to a blind hole in the right-side positioning countersunk hole at the rear end of the swing arm. The through hole inside the cooling mandrel communicates with coolant channel A. The right end of the cooling mandrel is fixed to the end cap via an external thread. The right end of the cooling mandrel is connected to an external pipe via a tapered thread inside the through hole, communicating with an external water tank. The swing arm has coolant channels A and B inside. Inside coolant channels C and B, from top to bottom, are placed a spring, a steel ball, a ejector pin, and a positioning stud. Coolant from the external water tank flows into coolant channel A through external pipes and the cooling mandrel. When the grinding wheel dressing device is not in operation, the swing arm is upright, and the steel ball, under the spring's force, tightly connects with the circular recess on the upper surface of the positioning stud, preventing coolant flow. When the grinding wheel dressing device is in operation, the swing arm swings, and the bottom of the ejector pin contacts the bottom of the V-shaped groove of the positioning block, overcoming the spring's force. The steel ball is lifted, and the coolant in coolant channel A flows into coolant channel C through the positioning stud. The coolant flows smoothly in the coolant channels inside the swing arm. The dressing device seat has coolant channels D, E, F, G, and H inside. Coolant channel D is connected to coolant channel C inside the swing arm. Coolant channel E connects coolant channels D and F. Coolant channel F is connected to coolant channels G and H. Coolant channels F, G, and H... Connectors A, B, C, and D are installed at the outer end of the liquid channel H. Cooling connector A is connected to switch A, cooling water pipe A, and nozzle A, providing cooling when dressing the outer cylindrical grinding wheel A. Cooling connector B is connected to switch B, cooling water pipe B, and nozzle B, providing cooling when dressing the outer cylindrical grinding wheel. Cooling connector C is connected to switch C, cooling water pipe B, and nozzle B, providing cooling when dressing the inner cylindrical grinding wheel. Cooling connector D is connected to switch D, cooling water pipe D, and nozzle D, providing cooling when dressing the outer cylindrical grinding wheel B.

8. The multifunctional grinding wheel dressing device according to claim 7, characterized in that: When the swing arm flips to the working position, the ejector pin strikes the bottom of the V-shaped groove of the positioning block. At the same time, the conical structure at the bottom of the positioning column cooperates with the V-shaped groove to play a positioning role. The positioning block is horizontally fixed to the upper surface of the positioning block base by screws, and the positioning block base is horizontally fixed to the left side of the base by screws.

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