Outer chamfering device for hard alloy circular ring

Abstract

The outer chamfering device comprises a machine frame, a grinding wheel installed on one side of the machine frame and a material collecting box placed below the machine frame, a sliding groove is formed in the upper surface of the machine frame, a first driving air cylinder is installed in the sliding groove, and a sliding base is installed on a moving piece of the first driving air cylinder; a fixing plate is connected to one side of the machine frame, a second driving air cylinder is installed on the upper surface of the fixing plate, a material overturning mechanism is installed on the second driving air cylinder, and a groove is formed in the sliding base. By arranging the cylindrical shaft, the clamping blocks can stretch out to extrude the inner wall of the hard alloy circular ring to pneumatically clamp the circular ring, the relative static effect of the circular ring and the cylindrical shaft is kept, and it is ensured that the circular ring is stably ground and chamfered by the grinding wheel on the cylindrical shaft; and by arranging the turning mechanism, the effect of automatically turning the circular ring can be achieved, manual discharging and turning are replaced, and the circular ring can be subjected to double-face continuous chamfering machining.

Description

Technical Field

[0001] The invention relates to the technical field of chamfering of a cemented carbide ring, in particular to an external chamfering device for a cemented carbide ring. Background Art

[0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Its biggest feature is its high hardness and wear resistance. It is often used to manufacture cutting tools, cold working dies and high wear-resistant parts. Cemented carbide ring parts are usually in the shape of a ring. In order to achieve the specified shape, grinding and chamfering are often performed on the outer wall of the ring.

[0003] At present, high-speed rotating grinding with a grinding wheel is usually used for chamfering of hard circular rings. A Chinese patent document with reference to the announcement number (CN204976230U) discloses an external chamfering processing device for a cemented carbide circular ring, including a dovetail track, a tooling body and a limiter. The dovetail track is fixed on a workbench, and the angle a between the dovetail track and the extension line of the grinding wheel surface is an acute angle. The lower end of the tooling body is provided with a track that slidably cooperates with the dovetail track. The tooling body is slidably fixed on the dovetail track, and the limiter is fixed on the dovetail track on the front side of the tooling body. The tooling body includes a support seat, a spindle arranged on the lateral wall of the support seat, and a bearing that rotatably fixes the spindle to the support seat. A workpiece clamp is provided at the end of the spindle, and the grinding wheel is arranged on the running track of the workpiece clamp.

[0004] However, the carbide ring in the above patent document is installed only by relying on the cylindrical workpiece holder. The inner wall of the ring is movably connected with the outer wall of the workpiece holder. When subjected to the friction of the grinding wheel, the ring is easy to rotate on the workpiece holder, offsetting the grinding effect of the grinding wheel, and the ring cannot be stably clamped, affecting the normal chamfering. In addition, since the grinding wheel can only chamfer one corner of the outer wall of the ring at a time, the processing of the other side requires manual removal of the ring, turning it over and reinstalling it, and then performing secondary chamfering. The corner cannot be automatically switched for double-sided continuous chamfering, affecting the work efficiency of the ring chamfering. Summary of the invention

[0005] The object of the present invention is to provide an external chamfering device for a cemented carbide ring to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an external chamfering device for a cemented carbide ring, comprising a frame, a grinding wheel installed on one side of the frame, and a material collecting box placed under the frame, a slide groove is provided on the upper surface of the frame, a first driving cylinder is installed inside the slide groove, a slide seat is installed on the moving part of the first driving cylinder, a fixed plate is connected to one side of the frame, a second driving cylinder is installed on the upper surface of the fixed plate, a material turning mechanism is installed on the second driving cylinder, a groove is provided inside the slide seat, a cylindrical shaft is provided on one side of the slide seat, the number of the cylindrical shafts is three and they are equidistantly arranged in the front, middle and rear, one end of the two cylindrical shafts in the front and rear positions are connected to a rectangular shaft, and the outer sides of the three cylindrical shafts are sleeved with circular rings;

[0007] A telescopic groove is provided inside the end of the cylindrical shaft away from the rectangular shaft, a second piston is arranged inside the telescopic groove, a clamping block is connected to one side of the second piston, a rubber pad is provided on the outer wall of the clamping block, a ventilation groove is provided on one side of the telescopic groove, and a second ventilation pipe is connected to one side of the ventilation groove that passes through the side wall of the cylindrical shaft.

[0008] Preferably, a rectangular hole is penetrated through the side wall of the sliding seat close to the cylindrical shaft, and the two rectangular shafts are connected to the cylindrical shaft through the rectangular holes. The rectangular shaft is slidably connected to the sliding seat through the rectangular holes, and the three cylindrical shafts are gradually shortened from front to back and arranged in a stepped manner.

[0009] Preferably, a threaded groove is formed on one side of the two rectangular shafts away from the cylindrical shaft, a screw is arranged inside the threaded groove, gears are installed on the screw and the cylindrical shaft in the middle position, one end of the cylindrical shaft in the middle position is connected to the middle shaft, a handle is connected to one side of the middle shaft, bearings are connected between the middle shaft and the two screws in the front and rear positions and the side walls of the slide seat, the three gears are meshed with each other, and the cylindrical shaft in the middle position and the two screws in the front and rear positions are rotationally connected through the gears.

[0010] Preferably, one end of the screw is rotatably connected to the side wall of the slide seat via the bearing, and the other end is inserted into the thread groove and threadedly connected to the rectangular shaft, and the thread directions of the two screw surfaces at the front and rear positions are opposite.

[0011] Preferably, the cross-section of the clamp block is T-shaped, the number of the clamp block and the number of the expansion slots are four, and they are arranged circumferentially and equidistantly in the cylindrical shaft, the second piston is slidably connected to the expansion slots, and the four expansion slots are all connected to the ventilation slot.

[0012] Preferably, the material turning mechanism includes a fixed seat, a U-shaped plate is arranged above the fixed seat, a rotating shaft is connected between the middle part of the U-shaped plate and the fixed seat, one end of the rotating shaft passes through the side wall of the fixed seat and is connected to a material turning motor, a movable groove is opened inside the upper wall of the U-shaped plate, a first piston is arranged inside the movable groove, a movable block is connected to the bottom of the first piston, a U-shaped groove is opened at the bottom of the movable block, a first ventilation pipe is connected to the top of the movable groove, and a slot is opened on the upper surface of the lower side wall of the U-shaped plate.

[0013] Preferably, the fixing seat is in the shape of a plate with an L-shaped cross section, the fixing seat is mounted on a moving part of the second driving cylinder, the U-shaped plate is in a horizontally placed U-shape, and the U-shaped plate is rotatably connected to the fixing seat via the rotating shaft.

[0014] Preferably, the first piston is slidably connected to the inner wall of the movable groove, the movable block is made of a permanent magnet, the position of the movable block corresponds to the three cylindrical shafts, and the movable block is clamped on the outer side of the cylindrical shaft through the U-shaped groove.

[0015] Preferably, one end of the first ventilation pipe away from the U-shaped groove is connected to a high-pressure air pump unit, and one end of the second ventilation pipe away from the ventilation groove is connected to the high-pressure air pump unit, and the high-pressure air pump unit is installed at the bottom of the frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The external chamfering device of the cemented carbide ring is provided with a cylindrical shaft. After the cemented carbide ring is sleeved on the cylindrical shaft, the high-pressure air pump unit inflates the ventilation groove through the second ventilation pipe, and the compressed gas in the ventilation groove is introduced into the ventilation groove, the air pressure in the ventilation groove increases, and the compressed gas pushes the second piston to slide in the telescopic groove, so that the second piston drives the clamping block to extend from the telescopic groove, and the rubber pad contacts the inner wall of the ring, thereby increasing the friction between the clamping block and the inner wall of the ring, and the clamping block extends to squeeze the inner wall of the cemented carbide ring to pneumatically clamp the ring, thereby maintaining the relative static effect of the ring and the cylindrical shaft, and ensuring that the ring is stably ground and chamfered by the grinding wheel on the cylindrical shaft.

[0018] 2. The outer chamfering device of the cemented carbide ring is provided with a turning mechanism. After the chamfering of a corner of the outer wall of the ring is completed, the first driving cylinder drives the slide to move forward on the frame, and the slide drives the ring to be inserted into the middle of the U-shaped plate through the cylindrical shaft. At this time, the cylindrical shaft is aligned with the center line of the U-shaped plate, and the high-pressure air pump unit inflates the movable groove through the first ventilation pipe. The increased air pressure in the movable groove pushes the first piston to move downward in the movable groove, and the first piston drives the movable block to extend and insert into the slot. At this time, the movable block is clamped on both sides of the cylindrical shaft through the U-shaped groove, and then cooperates with the second driving cylinder to drive the fixed The seat moves toward the side away from the frame, and the fixed seat drives the U-shaped plate and the movable block to move, so that the movable block moves on the cylindrical shaft and pushes the ring to be removed from the cylindrical shaft. The movable block itself has a magnetic attraction to adsorb the removed ring, and then the turning motor drives the U-shaped plate to flip 180° via the rotating shaft, and the movable plate drives the ring to turn over, and then the second driving cylinder drives the fixed seat to reset, so that the movable block adsorbs the ring and puts it back on the cylindrical shaft, realizing the effect of automatically turning over the ring, replacing manual unloading and turning, so that the ring can be processed with double-sided continuous chamfering.

[0019] 3. The external chamfering device of the cemented carbide ring is provided with three cylindrical shafts, through which three rings are respectively installed, and the three cylindrical shafts are gradually shortened from front to back and arranged in a stepped manner, so that the inclination angle of the connecting line of the outer side walls of the three rings is consistent with the grinding wheel, so that the grinding wheel can chamfer the three rings at the same time, thereby accelerating the working efficiency of the ring chamfering processing.

[0020] 4. The external chamfering device of the cemented carbide ring is provided with a rectangular shaft and a screw rod. The central shaft is rotated by a handle, and the central shaft drives the cylindrical shaft in the middle to rotate. The cylindrical shaft drives the screw rods at the front and rear positions to rotate through gears. Since the thread directions of the screw rod surfaces at the front and rear positions are opposite, the two screw rods respectively drive the two rectangular shafts to move in opposite directions in the rectangular frame, thereby achieving the effect of adjusting the inclination angle of the line connecting the outer side walls of the rings on the three cylindrical shafts according to the preset chamfering angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the front structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the slide seat of the present invention viewed from above;

[0024] Figure 4 It is a structural schematic diagram of the material turning mechanism of the present invention;

[0025] Figure 5 For the present invention Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0026] Figure 6 It is a schematic diagram of the cylindrical shaft cross-section structure of the present invention.

[0027] Reference numerals:

[0028] 1. Frame; 2. Grinding wheel; 3. Collecting box; 4. Slide; 5. First driving cylinder; 6. Slide seat; 61. Rectangular hole; 7. Fixed plate; 8. Second driving cylinder; 9. Turning mechanism; 91. Fixed seat; 92. U-shaped plate; 93. Rotating shaft; 94. Turning motor; 95. Movable groove; 96. First piston; 97. Movable block; 98. U-shaped groove; 99. First ventilation pipe; 910. Slot; 10. Groove; 11. Rectangular shaft; 111. Threaded groove; 112. Screw; 113. Gear; 114. Middle shaft; 115. Handle; 116. Bearing; 12. Cylindrical shaft; 121. Telescopic groove; 122. Second piston; 123. Clamp block; 124. Rubber pad; 125. Ventilation groove; 126. Second ventilation pipe; 13. Ring; 14. High-pressure air pump unit. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 6As shown, this embodiment provides an external chamfering device for a cemented carbide ring, comprising a frame 1, a grinding wheel 2 installed on one side of the frame 1, and a collecting box 3 placed under the frame 1, a slide groove 4 is provided on the upper surface of the frame 1, a first driving cylinder 5 is installed inside the slide groove 4, the first driving cylinder 5 is embedded and installed on the bottom surface of the slide groove 4, a slide seat 6 is installed on the moving part of the first driving cylinder 5, a fixed plate 7 is connected to one side of the frame 1, a second driving cylinder 8 is installed on the upper surface of the fixed plate 7, a turning mechanism 9 is installed on the second driving cylinder 8, a groove 10 is provided inside the slide seat 6, a cylindrical shaft 12 is provided on one side of the slide seat 6, the number of the cylindrical shafts 12 is three and they are equidistantly arranged in the front, middle and rear, one end of the two cylindrical shafts 12 in the front and rear positions are connected to a rectangular shaft 11, and the outer sides of the three cylindrical shafts 12 are sleeved with a ring 13;

[0033] A telescopic groove 121 is provided inside the end of the cylindrical shaft 12 away from the rectangular shaft 11, and the telescopic groove 121 extends to the outer wall of the cylindrical shaft 12. A second piston 122 is arranged inside the telescopic groove 121, and a clamping block 123 is connected to one side of the second piston 122. A rubber pad 124 is arranged on the outer wall of the clamping block 123. A venting groove 125 is provided on one side of the telescopic groove 121. The venting groove 125 is circular, and one side of the venting groove 125 passes through the side wall of the cylindrical shaft 12 and is connected to a second vent pipe 126. It should be noted that the present invention also includes a main control center for supporting the normal operation of various electrical equipment. The actual model of the first driving cylinder 5 is selected according to the actual size of the slide 4, and the actual model of the second driving cylinder 8 is selected according to the actual size of the fixing plate 7. The rectangular shaft 11 is integrally connected with the cylindrical shaft 12, and the turning mechanism 9 is used to automatically turn over the ring 13.

[0034] To further explain, the rubber pad 124 in the present invention is used to contact the inner wall of the ring 13, increase the friction between the clamping block 123 and the inner wall of the ring 13, keep the ring 13 and the cylindrical shaft 12 in a relatively static state, and avoid rotation when the grinding wheel 2 is grinding.

[0035] Further, such as Figure 3 As shown, a rectangular hole 61 is formed through the side wall of the slide 6 near the cylindrical shaft 12, and two rectangular shafts 11 are connected to the cylindrical shaft 12 through the rectangular holes 61. The rectangular shaft 11 is slidably connected to the slide 6 through the rectangular holes 61, and the three cylindrical shafts 12 are gradually shortened from front to back and arranged in a step-like manner. It should be noted that the width of the inner wall of the rectangular hole 61 is compatible with the width of the rectangular shaft 11, and the rotation of the rectangular shaft 11 is limited by the inner wall of the rectangular hole 61. There are two rectangular shafts 11, which are distributed in the two cylindrical shafts 12 in the front and rear positions. The three cylindrical shafts 12 are gradually shortened from front to back and arranged in a step-like manner, and the inclination angle of the line connecting the outer walls of the three circular rings 13 is consistent with the grinding wheel 2, so that the grinding wheel 2 can chamfer the three circular rings 13 at the same time.

[0036] Further, such as Figure 3 As shown, a thread groove 111 is provided on one side of the two rectangular shafts 11 away from the cylindrical shaft 12, a screw rod 112 is provided inside the thread groove 111, the outer diameter of the screw rod 112 matches the inner diameter of the thread groove 111, the screw rod 112 is inserted into the thread groove 111, a gear 113 is installed on the screw rod 112 and the cylindrical shaft 12 in the middle position, a middle shaft 114 is connected to one end of the cylindrical shaft 12 in the middle position, a handle 115 is connected to one side of the middle shaft 114, and the middle shaft 114 is connected to one side of the handle 115. Bearings 116 are connected between 114 and the two screw rods 112 at the front and rear positions and the side walls of the slide 6. The middle shaft 114 and the screw rod 112 are rotationally connected to the slide 6 via the bearings 116. The three gears 113 are meshed with each other. The cylindrical shaft 12 at the middle position and the two screw rods 112 at the front and rear positions are rotationally connected through the gears 113. The three gears 113 are meshed with each other. The rotation of the gear 113 at the middle position drives the gears 113 at the front and rear positions to rotate in the opposite direction.

[0037] Further, such as Figure 3 As shown, one end of the screw rod 112 is rotatably connected to the side wall of the slide seat 6 via the bearing 116, and the other end thereof is inserted into the thread groove 111 and threadedly connected to the rectangular shaft 11, and the thread directions of the surfaces of the two screw rods 112 at the front and rear positions are opposite. In this embodiment, after the cylindrical shaft 12 at the middle position rotates, the cylindrical shaft 12 drives the screw rods 112 at the front and rear positions to rotate via the gear 113. Since the thread directions of the surfaces of the screw rods 112 at the front and rear positions are opposite, the two screw rods 112 respectively drive the two rectangular shafts 11 to move in opposite directions within the rectangular frame, so as to facilitate the adjustment of the inclination angle of the line connecting the outer side walls of the circular rings 13 on the three cylindrical shafts 12.

[0038] Further, such as Figure 6 As shown, the cross section of the clamp block 123 is T-shaped, and the number of the clamp block 123 and the telescopic groove 121 are both four, and they are arranged equidistantly in the cylindrical shaft 12 in the circumferential direction, and the second piston 122 is slidably connected to the telescopic groove 121, and the four telescopic grooves 121 are all connected to the venting groove 125. In this embodiment, the four clamp blocks 123 are extended to clamp the inner wall of the ring 13, and the pressures of the four clamp blocks 123 in the telescopic groove 121 are connected, so the extended lengths are consistent, and the ring 13 and the cylindrical shaft 12 are always aligned with each other. The high-pressure air pump unit 14 is used to inflate the venting groove 125 through the second vent pipe 126, and the compressed gas in the venting groove 125 is passed into the venting groove 125, and the air pressure in the venting groove 125 increases, and the compressed gas pushes the second piston 122 to slide in the telescopic groove 121, so that the second piston 122 drives the clamp block 123 to extend from the telescopic groove 121 to pneumatically clamp the ring 13.

[0039] Further, such as Figure 2 and Figure 4As shown, the material turning mechanism 9 includes a fixed seat 91, a U-shaped plate 92 is arranged above the fixed seat 91, a rotating shaft 93 is connected between the middle of the U-shaped plate 92 and the fixed seat 91, one end of the rotating shaft 93 passes through the side wall of the fixed seat 91 and is connected to a material turning motor 94, a movable groove 95 is provided inside the upper side wall of the U-shaped plate 92, a first piston 96 is arranged inside the movable groove 95, a movable block 97 is connected to the bottom of the first piston 96, a U-shaped groove 98 is arranged at the bottom of the movable block 97, a first ventilation pipe 99 is connected to the top of the movable groove 95, a slot 910 is provided on the upper surface of the lower side wall of the U-shaped plate 92, and the bottom of the movable block 97 is inserted into the slot 910 when it is stuck on the outside of the cylindrical shaft 12, so as to close the U-shaped groove 98. In this embodiment, the shaft end of the material turning motor 94 is connected to the rotating shaft 93, and the material turning motor 94 is installed on the side wall of the fixed seat 91. The material turning motor 94 is essentially a motor with a forward and reverse circuit, which is reset after two material turnings. It should be noted that there are three movable blocks 97 , and the spacing between adjacent movable blocks 97 corresponds to the spacing between the cylindrical shafts 12 .

[0040] Further, such as Figure 4 As shown, the fixed seat 91 is in the shape of a plate with an L-shaped cross-section. The fixed seat 91 is installed on the moving part of the second driving cylinder 8. The U-shaped plate 92 is in a horizontally placed U-shape. The open side of the U-shaped plate 92 faces the direction of the grinding wheel 2. The U-shaped plate 92 is rotatably connected to the fixed seat 91 via the rotating shaft 93. The U-shaped plate 92 is driven by the turning motor 94 via the rotating shaft 93 to flip 180°, and the movable plate drives the ring 13 to automatically flip over.

[0041] Further, such as Figure 4 As shown, the first piston 96 is slidably connected to the inner wall of the movable groove 95, and the movable block 97 is made of a permanent magnet. The movable block 97 itself has a magnetic attraction and can adsorb the ring 13 after the ring 13 is pushed down from the cylindrical shaft 12. The position of the movable block 97 corresponds to the three cylindrical shafts 12, and the movable block 97 is clamped on the outside of the cylindrical shaft 12 through the U-shaped groove 98.

[0042] Furthermore, Figure 2-4 As shown, one end of the first vent pipe 99 away from the U-shaped groove 98 is connected to the high-pressure air pump unit 14, and one end of the second vent pipe 126 away from the vent groove 125 is connected to the high-pressure air pump unit 14, and the high-pressure air pump unit 14 is installed at the bottom of the frame 1. It should be noted that the high-pressure air pump unit 14 includes an air pump and a vacuum pump, which are respectively used for inflating and suctioning in the first vent pipe 99 and the second vent pipe 126, so that the first piston 96 and the second piston 122 move up and down, and the ring 13 is clamped and the movable block 97 is extended and retracted. Among them, the first vent pipe 99 and the second vent pipe 126 are connected to the air inlet and the air outlet of the high-pressure air pump unit 14 through a three-way pipe fitting and a valve, so as to complete the switching of the first vent pipe 99 and the second vent pipe 126 for inflation and suction.

[0043] Specifically, when the user actually uses the external chamfering device to perform external chamfering on the carbide ring 13, the user first adjusts the position of the cylindrical shaft 12 according to the angle of the external chamfer of the ring 13, and drives the middle shaft 114 to rotate through the handle 115. The middle shaft 114 drives the cylindrical shaft 12 in the middle position to rotate. The cylindrical shaft 12 drives the screw rods 112 at the front and rear positions to rotate through the gear 113. Since the thread directions on the surfaces of the screw rods 112 at the front and rear positions are opposite, the two screw rods 112 respectively drive the two rectangular shafts 11 to move in opposite directions in the rectangular frame, ensuring that the inclination angle of the line connecting the outer side walls of the ring 13 on the three cylindrical shafts 12 corresponds to the preset processing angle. Then, the circular ring 13 to be processed is sleeved on the cylindrical shaft 12, and the high-pressure air pump unit 14 is started. The high-pressure air pump unit 14 inflates the ventilation groove 125 through the second ventilation pipe 126, and the compressed gas in the ventilation groove 125 is passed into the ventilation groove 125. The air pressure in the ventilation groove 125 increases, and the compressed gas pushes the second piston 122 to slide in the telescopic groove 121, so that the second piston 122 drives the clamping block 123 to extend out of the telescopic groove 121, and contacts with the inner wall of the circular ring 13 through the rubber pad 124, thereby increasing the friction between the clamping block 123 and the inner wall of the circular ring 13, so that the clamping block 123 squeezes the inner wall of the cemented carbide ring 13 to stably clamp it. Then, the main control center controls the first driving cylinder 5 to start, and the first driving cylinder 5 drives the slide 6 to move backward in the slide groove 4. The slide 6 drives the cylindrical shaft 12 and the three rings 13 to move backward, so that the ring 13 gradually approaches the high-speed rotating grinding wheel 2, and the grinding wheel 2 grinds the corner of the outer wall of the ring 13 at the rear side to chamfer the outer wall.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, when the chamfering is completed, the first driving cylinder 5 drives the slide 6 to move forward, and the slide 6 drives the ring 13 to be inserted into the middle of the U-shaped plate 92 through the cylindrical shaft 12. At this time, the cylindrical shaft 12 is aligned with the center line of the U-shaped plate 92, and the high-pressure air pump unit 14 inflates the movable groove 95 through the first ventilation pipe 99. The air pressure in the movable groove 95 increases, pushing the first piston 96 to move downward in the movable groove 95, and the first piston 96 drives the movable block 97 to extend and insert into the slot 910. At this time, the movable block 97 is stuck on both sides of the cylindrical shaft 12 through the U-shaped groove 98, and then the high-pressure air pump unit 14 inhales air into the ventilation groove 125 in the cylindrical shaft 12, so that the telescopic groove 121 is in a negative pressure state, pulling the second piston 122 to reset, and the clamping block 123 retracts into the second piston 122, canceling the clamping effect on the ring 13, and then cooperating with the second driving cylinder 8 to drive the fixed seat 91 away from One side of the frame 1 moves, and the fixed seat 91 drives the U-shaped plate 92 and the movable block 97 to move, so that the movable block 97 moves on the cylindrical shaft 12 and pushes the ring 13 to be removed from the cylindrical shaft 12. The movable block 97 itself has a magnetic attraction to absorb the removed ring 13, and then the turning motor 94 drives the U-shaped plate 92 to flip 180° via the rotating shaft 93, and the movable plate drives the ring 13 to turn over, and then the second driving cylinder 8 drives the fixed seat 91 to reset, so that the movable block 97 absorbs the ring 13 and puts it on the cylindrical shaft 12 again. When the ring 13 is on the outside of the clamping block 123, the clamping block 123 clamps the ring 13 when the above operation is repeated, and then the U-shaped plate 92 continues to move close to the side wall of the frame 1, and then the first driving cylinder 5 drives the slide 6 to move backward to chamfer the other corner of the outer wall of the ring 13 to achieve double-sided continuous chamfering processing.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for external chamfering of a cemented carbide ring, comprising a frame (1), a grinding wheel (2) mounted on one side of the frame (1), and a collection box (3) placed below the frame (1), characterized in that: The upper surface of the frame (1) is provided with a slide groove (4), a first driving cylinder (5) is installed inside the slide groove (4), a slide seat (6) is installed on the moving part of the first driving cylinder (5), one side of the frame (1) is connected with a fixing plate (7), a second driving cylinder (8) is installed on the upper surface of the fixing plate (7), a material turning mechanism (9) is installed on the second driving cylinder (8), a groove (10) is provided inside the slide seat (6), a cylindrical shaft (12) is arranged on one side of the slide seat (6), the number of the cylindrical shafts (12) is three and they are arranged equidistantly in the front, middle and rear, one end of the two cylindrical shafts (12) in the front and rear positions are connected with a rectangular shaft (11), and the outer sides of the three cylindrical shafts (12) are sleeved with a circular ring (13); An expansion slot (121) is provided inside one end of the cylindrical shaft (12) away from the rectangular shaft (11); a second piston (122) is arranged inside the expansion slot (121); a clamping block (123) is connected to one side of the second piston (122); a rubber pad (124) is arranged on the outer wall of the clamping block (123); a venting slot (125) is provided on one side of the expansion slot (121); and a second venting pipe (126) is connected to one side of the venting slot (125) penetrating through the side wall of the cylindrical shaft (12).

2. The outer chamfering device of a cemented carbide ring according to claim 1, characterized in that: A rectangular hole (61) is formed through a side wall of the slide seat (6) close to the cylindrical shaft (12); the two rectangular shafts (11) penetrate the rectangular hole (61) and are connected to the cylindrical shaft (12); the rectangular shafts (11) are slidably connected to the slide seat (6) through the rectangular hole (61); and the three cylindrical shafts (12) are gradually shortened from front to back and arranged in a stepped manner.

3. The outer chamfering device of a cemented carbide ring according to claim 2, characterized in that: A thread groove (111) is provided on one side of the two rectangular shafts (11) away from the cylindrical shaft (12), a screw rod (112) is arranged inside the thread groove (111), a gear (113) is installed on the screw rod (112) and the cylindrical shaft (12) at the middle position, one end of the cylindrical shaft (12) at the middle position is connected to a central shaft (114), one side of the central shaft (114) is connected to a handle (115), bearings (116) are connected between the central shaft (114) and the two screw rods (112) at the front and rear positions and the side wall of the slide seat (6), the three gears (113) are meshed with each other, and the cylindrical shaft (12) at the middle position and the two screw rods (112) at the front and rear positions are rotationally connected through the gear (113).

4. The outer chamfering device of a cemented carbide ring according to claim 3, characterized in that: One end of the screw rod (112) is rotatably connected to the side wall of the slide seat (6) via the bearing (116), and the other end is inserted into the thread groove (111) and threadedly connected to the rectangular shaft (11), and the thread directions of the surfaces of the two screw rods (112) at the front and rear positions are opposite.

5. The outer chamfering device of a cemented carbide ring according to claim 1, characterized in that: The clamp block (123) has a T-shaped cross section. The clamp block (123) and the telescopic grooves (121) are both four in number and are equidistantly arranged in the circumferential direction within the cylindrical shaft (12). The second piston (122) is slidably connected to the telescopic grooves (121), and the four telescopic grooves (121) are all connected to the ventilation groove (125).

6. The outer chamfering device of a cemented carbide ring according to claim 1, characterized in that: The material turning mechanism (9) comprises a fixed seat (91), a U-shaped plate (92) is arranged above the fixed seat (91), a rotating shaft (93) is connected between the middle of the U-shaped plate (92) and the fixed seat (91), one end of the rotating shaft (93) passes through the side wall of the fixed seat (91) and is connected to a material turning motor (94), a movable groove (95) is provided inside the upper side wall of the U-shaped plate (92), a first piston (96) is provided inside the movable groove (95), a movable block (97) is connected to the bottom of the first piston (96), a U-shaped groove (98) is provided at the bottom of the movable block (97), a first ventilation pipe (99) is connected to the top of the movable groove (95), and a slot (910) is provided on the upper surface of the lower side wall of the U-shaped plate (92).

7. The outer chamfering device of a cemented carbide ring according to claim 6, characterized in that: The fixing seat (91) is in the form of a plate with an L-shaped cross section. The fixing seat (91) is mounted on a moving part of a second driving cylinder (8). The U-shaped plate (92) is in the form of a horizontally placed U-shape. The U-shaped plate (92) is rotatably connected to the fixing seat (91) via the rotating shaft (93).

8. The outer chamfering device of a cemented carbide ring according to claim 6, characterized in that: The first piston (96) is slidably connected to the inner wall of the movable groove (95); the movable block (97) is made of a permanent magnet; the position of the movable block (97) corresponds to the three cylindrical shafts (12); the movable block (97) is clamped on the outer side of the cylindrical shaft (12) via the U-shaped groove (98).

9. The outer chamfering device of a cemented carbide ring according to claim 6, characterized in that: One end of the first ventilation pipe (99) away from the U-shaped groove (98) is connected to a high-pressure air pump unit (14), and one end of the second ventilation pipe (126) away from the ventilation groove (125) is connected to the high-pressure air pump unit (14), and the high-pressure air pump unit (14) is installed at the bottom of the frame (1).

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