A chamfering device for a cemented carbide ring

Abstract

This invention discloses a chamfering device for a cemented carbide ring, comprising a frame, a grinding wheel mounted on one side of the frame, and a collection box placed below the frame. A groove is formed on the upper surface of the frame, and a first driving cylinder is installed inside the groove. A sliding block is mounted on the moving part of the first driving cylinder. A fixed plate is connected to one side of the frame, and a second driving cylinder is mounted on the upper surface of the fixed plate. A flipping mechanism is mounted on the second driving cylinder, and a groove is formed inside the sliding block. This invention, by setting a cylindrical shaft, achieves pneumatic clamping of the cemented carbide ring by extending clamping blocks to compress the inner wall of the ring, maintaining the relative stillness between the ring and the cylindrical shaft, ensuring that the ring is stably subjected to grinding and chamfering on the cylindrical shaft. By setting the flipping mechanism, the ring can be automatically flipped, replacing manual unloading and flipping, allowing for continuous double-sided chamfering of the ring.

Description

Technical Field

[0001] This invention relates to the field of cemented carbide ring chamfering technology, specifically to a cemented carbide ring external chamfering device. Background Technology

[0002] Cemented carbide is an alloy material made from hard compounds of refractory metals and binder metals through powder metallurgy. Its most prominent feature is its high hardness and wear resistance. It is often used to manufacture cutting tools, cold work dies, and high wear-resistant parts. Cemented carbide ring parts are usually ring-shaped. In order to achieve a specified shape, the outer wall of the ring is often ground and chamfered.

[0003] Currently, the chamfering of hardened rings is usually achieved using high-speed rotary grinding with a grinding wheel. Referring to Chinese patent document (CN204976230U), a chamfering device for hardened carbide rings is disclosed, comprising a dovetail track, a fixture body, and a limiter. The dovetail track is fixed to a worktable, and the angle α between the dovetail track and the extension line of the grinding wheel surface is an acute angle. The lower end of the fixture body is provided with a track that slides with the dovetail track. The fixture body is slidably fixed on the dovetail track, and the limiter is fixed on the dovetail track on the front side of the fixture body. The fixture body includes a support base, a spindle located on the side wall of the support base, and a bearing that rotatably fixes the spindle to the support base. The end of the spindle is provided with a workpiece clamping position, and the grinding wheel is positioned on the running trajectory of the workpiece clamping position.

[0004] However, in the aforementioned patent documents, the carbide ring is installed solely by a cylindrical workpiece holder. The inner wall of the ring is movably connected to the outer wall of the workpiece holder. When subjected to the friction of the grinding wheel, the ring easily rotates on the workpiece holder, negating the grinding effect of the grinding wheel and failing to stably clamp the ring, thus affecting the normal chamfering process. 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, flipping it over, reinstalling it, and then performing a second chamfer. It is impossible to automatically switch corners for continuous double-sided chamfering, which affects the working efficiency of ring chamfering. Summary of the Invention

[0005] The purpose of this invention is to provide an external chamfering device for a cemented carbide ring to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a chamfering device for a cemented carbide ring, comprising a frame, a grinding wheel mounted on one side of the frame, and a collection box placed below the frame. A groove is formed on the upper surface of the frame, and a first driving cylinder is installed inside the groove. A sliding block is mounted on the moving part of the first driving cylinder. A fixed plate is connected to one side of the frame, and a second driving cylinder is mounted on the upper surface of the fixed plate. A material-turning mechanism is mounted on the second driving cylinder. A groove is formed inside the sliding block, and three cylindrical shafts are provided on one side of the sliding block. The cylindrical shafts are arranged equidistantly from front to back. One end of each of the two cylindrical shafts at the front and back positions is connected to a rectangular shaft, and a ring is fitted around the outer side of each of the three cylindrical shafts.

[0007] The cylindrical shaft has an internal telescopic groove at the end away from the rectangular shaft. A second piston is installed inside the telescopic groove. A clamping block is connected to one side of the second piston. A rubber pad is installed on the outer wall of the clamping block. A venting groove is provided on one side of the telescopic groove. A second venting pipe is connected to one side of the venting groove through the side wall of the cylindrical shaft.

[0008] Preferably, a rectangular hole is provided through the side wall of the slide near the cylindrical shaft, and both rectangular shafts are connected to the cylindrical shaft through the rectangular hole. The rectangular shafts are slidably connected to the slide via the rectangular hole, and the three cylindrical shafts are arranged in a stepped manner, gradually shortening from front to back.

[0009] Preferably, each of the two rectangular shafts has a threaded groove on the side away from the cylindrical shaft, and a screw is provided inside the threaded groove. Gears are installed on both the screw and the cylindrical shaft in the middle position. One end of the cylindrical shaft in the middle position is connected to a central shaft, and a handle is connected to one side of the central shaft. Bearings are connected between the central shaft and the two screws in the front and rear positions and the side wall of the slide. The three gears mesh with each other, and the cylindrical shaft in the middle position and the two screws in the front and rear positions are rotatably connected through the gears.

[0010] Preferably, one end of the screw is rotatably connected to the side wall of the slide block via the bearing, and the other end is inserted into the threaded 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 clamping block has a T-shaped cross-section, and there are four clamping blocks and four telescopic grooves, which are circumferentially equidistantly arranged within the cylindrical shaft. The second piston is slidably connected to the telescopic grooves, and all four telescopic grooves are connected to the venting grooves.

[0012] Preferably, the material turning mechanism includes a fixed base, a U-shaped plate is provided above the fixed base, a rotating shaft is connected between the middle of the U-shaped plate and the fixed base, one end of the rotating shaft passes through the side wall of the fixed base and is connected to a material turning motor, a movable groove is opened inside the upper side wall of the U-shaped plate, a first piston is provided 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 vent 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 fixed seat is a plate with an L-shaped cross-section, and the fixed seat is mounted on the moving part of the second drive cylinder. The U-shaped plate is a horizontally placed U-shape, and the U-shaped plate is rotatably connected to the fixed 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 permanent magnet, the position of the movable block corresponds to the three cylindrical shafts, and the movable block is engaged with the outside of the cylindrical shafts via the U-shaped groove.

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

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The external chamfering device for this carbide ring, by setting a cylindrical shaft, after the carbide ring is fitted onto the cylindrical shaft, the high-pressure air pump unit inflates the air groove through the second air pipe. The compressed gas in the air groove enters the air groove, increasing the air pressure in the air groove. The compressed gas pushes the second piston to slide in the telescopic groove, causing the second piston to drive the clamping block to extend out of the telescopic groove. The rubber pad contacts the inner wall of the ring, increasing the friction between the clamping block and the inner wall of the ring. By extending the clamping block and squeezing the inner wall of the carbide ring, the ring is pneumatically clamped, maintaining the relative static effect between the ring and the cylindrical shaft, ensuring that the ring is stably subjected to grinding and chamfering on the cylindrical shaft.

[0018] 2. The chamfering device for this carbide ring, through the setting of a turning mechanism, after the ring is chamfered at one corner of the outer wall, the first drive cylinder drives the slide to move forward on the frame. The slide drives the ring to insert into the middle of the U-shaped plate via the cylindrical shaft. At this time, the cylindrical shaft is aligned with the center line of the U-shaped plate. The high-pressure air pump unit fills the movable groove with air through the first air pipe. The increased air pressure in the movable groove pushes the first piston to move down in the movable groove. The first piston drives the movable block to extend out and insert into the slot. At this time, the movable block is locked on both sides of the cylindrical shaft through the U-shaped groove, and then fixed by the second drive cylinder. The seat moves away from the frame, and the fixed seat moves the U-shaped plate and the movable block. The movable block moves on the cylindrical shaft and pushes the ring off the cylindrical shaft. The movable block itself has a magnetic attraction to attract the removed ring. Then, the flipping motor drives the U-shaped plate to rotate 180° via the rotating shaft. The movable plate drives the ring to flip over. Then, the second drive cylinder drives the fixed seat to reset, so that the movable block attracts the ring and puts it back on the cylindrical shaft. This achieves the effect of automatically flipping the ring, replacing manual feeding and flipping, and allowing the ring to be continuously chamfered on both sides.

[0019] 3. The external chamfering device for this carbide ring uses three cylindrical shafts to install three rings respectively. The three cylindrical shafts are arranged in a stepped manner, with the shafts gradually shortening from front to back. This makes the inclination angle of the line connecting the outer walls of the three rings consistent with the grinding wheel, allowing the grinding wheel to chamfer the three rings simultaneously, thus speeding up the chamfering process.

[0020] 4. The outer chamfering device of this carbide ring is configured with a rectangular shaft and screws. The central shaft is rotated by the handle, which drives the cylindrical shaft in the middle to rotate. The cylindrical shaft drives the screws at the front and rear positions to rotate via gears. Since the thread directions on the surfaces of the screws at the front and rear positions are opposite, the two screws drive the two rectangular shafts to move in opposite directions within the rectangular frame, thereby achieving the effect of adjusting the tilt angle of the line connecting the outer walls of the ring on the three cylindrical shafts according to the preset chamfering angle. Attached Figure Description

[0021] Figure 1 This is a top view of the structure of the present invention;

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

[0023] Figure 3 This is a top-view cross-sectional view of the slide block structure of the present invention;

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

[0025] Figure 5 For the present invention Figure 1 Enlarged schematic diagram of section A in the middle;

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

[0027] Figure label:

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

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1 to 6As shown, this embodiment provides a chamfering device for a cemented carbide ring, including a frame 1, a grinding wheel 2 installed on one side of the frame 1, and a collection box 3 placed below the frame 1. A sliding groove 4 is provided on the upper surface of the frame 1. A first driving cylinder 5 is installed inside the sliding groove 4. The first driving cylinder 5 is embedded in the bottom surface of the sliding groove 4. A sliding seat 6 is installed on the moving part of the first driving cylinder 5. A fixing plate 7 is connected to one side of the frame 1. 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 sliding seat 6. A cylindrical shaft 12 is provided on one side of the sliding seat 6. There are three cylindrical shafts 12, which are equidistant from front to back. One end of the two cylindrical shafts 12 in the front and back positions is connected to a rectangular shaft 11. A ring 13 is sleeved on the outside of each of the three cylindrical shafts 12.

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

[0034] To further explain, the rubber pad 124 in this invention is used to contact the inner wall of the ring 13, increasing the friction between the clamping block 123 and the inner wall of the ring 13, so that the ring 13 and the cylindrical shaft 12 remain relatively stationary, and avoid rotation during grinding by the grinding wheel 2.

[0035] Furthermore, such as Figure 3 As shown, a rectangular hole 61 is provided through the side wall of the slide block 6 near the cylindrical shaft 12. Two rectangular shafts 11 are connected to the cylindrical shaft 12 through the rectangular hole 61. The rectangular shafts 11 are slidably connected to the slide block 6 via the rectangular hole 61. The three cylindrical shafts 12 are arranged in a stepped manner, gradually shortening from front to back. It should be noted that the width of the inner wall of the rectangular hole 61 is adapted to the width of the rectangular shaft 11, and the inner wall of the rectangular hole 61 restricts the rotation of the rectangular shaft 11. There are two rectangular shafts 11, distributed at the front and rear positions of the two cylindrical shafts 12. The three cylindrical shafts 12 are arranged in a stepped manner, gradually shortening from front to back. The inclination angle of the line connecting the outer walls of the three circular rings 13 is consistent with that of the grinding wheel 2, allowing the grinding wheel 2 to simultaneously chamfer the three circular rings 13.

[0036] Furthermore, such as Figure 3 As shown, both rectangular shafts 11 have threaded grooves 111 on the side away from the cylindrical shaft 12. A screw 112 is installed inside the threaded groove 111, with the outer diameter of the screw 112 matching the inner diameter of the threaded groove 111. The screw 112 is inserted into the threaded groove 111. Gears 113 are installed on both the screw 112 and the cylindrical shaft 12 in the middle position. One end of the cylindrical shaft 12 in the middle position is connected to a central shaft 114, and a handle 115 is connected to one side of the central shaft 114. Bearings 116 are connected between the central shaft 114 and the two screws 112 at the front and rear positions and the side wall of the slide block 6. The central shaft 114 and the screws 112 are rotatably connected to the slide block 6 via the bearings 116. The three gears 113 mesh with each other. The cylindrical shaft 12 in the middle position is rotatably connected to the two screws 112 at the front and rear positions via the gears 113. The three gears 113 mesh with each other. The rotation of the gear 113 in the middle position drives the gears 113 at the front and rear positions to rotate in the opposite direction.

[0037] Furthermore, such as Figure 3 As shown, one end of the screw 112 is rotatably connected to the side wall of the slide block 6 via a bearing 116, and the other end is inserted into the threaded groove 111 and threadedly connected to the rectangular shaft 11. The threads on the surfaces of the two screws 112 at the front and rear positions are in opposite directions. In this embodiment, after the cylindrical shaft 12 in the middle position rotates, the cylindrical shaft 12 drives the screws 112 at the front and rear positions to rotate via the gear 113. Since the threads on the surfaces of the screws 112 at the front and rear positions are in opposite directions, the two screws 112 respectively drive the two rectangular shafts 11 to move in opposite directions within the rectangular frame, which facilitates the adjustment of the tilt angle of the line connecting the outer walls of the rings 13 on the three cylindrical shafts 12.

[0038] Furthermore, such as Figure 6 As shown, the clamping block 123 has a T-shaped cross-section. There are four clamping blocks 123 and four telescopic grooves 121, arranged circumferentially at equal intervals within the cylindrical shaft 12. The second piston 122 is slidably connected to the telescopic grooves 121, and all four telescopic grooves 121 communicate with the venting grooves 125. In this embodiment, the four clamping blocks 123 extend outwards to clamp the inner wall of the ring 13. The pressure on the four clamping blocks 123 within the telescopic grooves 121 is consistent, resulting in uniform extension lengths, ensuring that the ring 13 and the cylindrical shaft 12 are always aligned at their centers. The high-pressure air pump unit 14 pressurizes the venting grooves 125 through the second vent pipe 126. The compressed gas in the venting grooves 125 increases the air pressure, pushing the second piston 122 to slide within the telescopic grooves 121. This causes the second piston 122 to drive the clamping blocks 123 to extend out of the telescopic grooves 121 and pneumatically clamp the ring 13.

[0039] Furthermore, such as Figure 2 and Figure 4As shown, the material-turning mechanism 9 includes a fixed base 91, a U-shaped plate 92 above the fixed base 91, a rotating shaft 93 connecting the middle of the U-shaped plate 92 and the fixed base 91, one end of the rotating shaft 93 passing through the side wall of the fixed base 91 and connected to a material-turning motor 94, a movable groove 95 being formed inside the upper side wall of the U-shaped plate 92, a first piston 96 being formed inside the movable groove 95, a movable block 97 being connected to the bottom of the first piston 96, a U-shaped groove 98 being formed at the bottom of the movable block 97, a first vent pipe 99 being connected to the top of the movable groove 95, and a slot 910 being formed on the upper surface of the lower side wall of the U-shaped plate 92, when the movable block 97 is engaged outside the cylindrical shaft 12, its bottom is inserted into the slot 910 to seal 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 mounted on the side wall of the fixed base 91. The material-turning motor 94 is essentially a motor with forward and reverse rotation circuits, and resets after two material turns. It should be noted that there are three active blocks 97, and the spacing between adjacent active blocks 97 corresponds to the spacing of the cylindrical axis 12.

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

[0041] Furthermore, such as Figure 4 As shown, the first piston 96 is slidably connected to the inner wall of the movable groove 95. The movable block 97 is made of permanent magnet. The movable block 97 itself has a magnetic attraction function, which can attract the ring 13 after pushing the ring 13 off the cylindrical shaft 12. The position of the movable block 97 corresponds to the three cylindrical shafts 12. The movable block 97 is stuck on the outside of the cylindrical shaft 12 through the U-shaped groove 98.

[0042] Furthermore, such as Figure 2-4 As shown, the end of the first vent pipe 99 furthest from the U-shaped groove 98 is connected to a high-pressure air pump unit 14, and the end of the second vent pipe 126 furthest from the vent groove 125 is also connected to the high-pressure air pump unit 14. The high-pressure air pump unit 14 is mounted at the bottom of the frame 1. It should be noted that the high-pressure air pump unit 14 includes an air filling pump and a vacuum pump, used for filling and drawing air into the first vent pipe 99 and the second vent pipe 126 respectively, causing the first piston 96 and the second piston 122 to move up and down, completing the clamping of the ring 13 and the extension and retraction of the movable block 97. The first vent pipe 99 and the second vent pipe 126 are connected to the air inlet and outlet of the high-pressure air pump unit 14 via a T-fitting and a valve, enabling the switching of filling and drawing air between the first vent pipe 99 and the second vent pipe 126.

[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. The handle 115 drives the central shaft 114 to rotate, and the central shaft 114 drives the cylindrical shaft 12 in the middle position to rotate. The cylindrical shaft 12 drives the screws 112 in the front and rear positions to rotate via the gear 113. Since the thread direction on the surface of the screws 112 in the front and rear positions is opposite, the two screws 112 drive the two rectangular shafts 11 to move in opposite directions within the rectangular frame, ensuring that the inclination angle of the line connecting the outer walls of the ring 13 on the three cylindrical shafts 12 corresponds to the preset processing angle. Then, the ring 13 to be processed is placed on the cylindrical shaft 12, and the high-pressure air pump unit 14 is started. The high-pressure air pump unit 14 inflates the air groove 125 through the second air pipe 126. The compressed gas in the air groove 125 is introduced into the air groove 125, and the air pressure in the air groove 125 increases. 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 from the telescopic groove 121. It contacts the inner wall of the ring 13 through the rubber pad 124, increasing the friction between the clamping block 123 and the inner wall of the ring 13, so that the clamping block 123 squeezes the inner wall of the hard alloy ring 13 to stably clamp it. Then, the main control center controls the first drive cylinder 5 to start, the first drive 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 rings 13 gradually approach the high-speed rotating grinding wheel 2, and the grinding wheel 2 grinds the corner of the outer wall of the ring 13 from the rear side, and performs chamfering on the outer wall.

[0044] like Figure 2 , Figure 4 and Figure 5As shown, after the chamfering is completed, the first drive cylinder 5 drives the slide 6 to move forward. The slide 6 drives the ring 13 to insert into the middle of the U-shaped plate 92 via the cylindrical shaft 12. At this time, the cylindrical shaft 12 is aligned with the center line of the U-shaped plate 92. The high-pressure air pump unit 14 inflates the movable groove 95 through the first air pipe 99. The increased air pressure in the movable groove 95 pushes the first piston 96 to move down in the movable groove 95. The first piston 96 drives the movable block 97 to extend out and insert into the slot 910. At this time, the movable block 97 is locked on both sides of the cylindrical shaft 12 via the U-shaped groove 98. Then, the high-pressure air pump unit 14 draws air into the air 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. The clamping block 123 retracts into the second piston 122, canceling the clamping effect on the ring 13. Then, in conjunction with the second drive cylinder 8, the fixed seat 91 is driven away from the center. When one side of the frame 1 moves, 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 off the cylindrical shaft 12. The movable block 97 itself has a magnetic attraction to attract the removed ring 13. Then, the flipping motor 94 drives the U-shaped plate 92 to rotate 180° via the rotating shaft 93. The movable plate drives the ring 13 to flip over. Then, the second drive cylinder 8 drives the fixed seat 91 to reset, so that the movable block 97 attracts the ring 13 and puts it back on the cylindrical shaft 12. When the ring 13 is outside the clamping block 123, the above operation is repeated to clamp the ring 13. Then, the U-shaped plate 92 continues to move closer to the side wall of the frame 1. Then, the first drive cylinder 5 drives the slide 6 to move backward to chamfer the other corner of the outer wall of the ring 13, realizing double-sided continuous chamfering processing.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A chamfering device for 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 sliding groove (4), a first driving cylinder (5) is installed inside the sliding groove (4), a sliding 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 sliding seat (6), a cylindrical shaft (12) is provided on one side of the sliding seat (6), there are three cylindrical shafts (12) and they are arranged equidistantly in front, middle and back, one end of the two cylindrical shafts (12) in the front and back positions is connected to a rectangular shaft (11), and a ring (13) is sleeved on the outside of the three cylindrical shafts (12). The cylindrical shaft (12) has a telescopic groove (121) inside the end away from the rectangular shaft (11). A second piston (122) is provided inside the telescopic groove (121). A clamping block (123) is connected to one side of the second piston (122). A rubber pad (124) is provided on the outer wall of the clamping block (123). A venting groove (125) is provided on one side of the telescopic groove (121). A second venting pipe (126) is connected to one side of the venting groove (125) through the side wall of the cylindrical shaft (12). A rectangular hole (61) is provided through the side wall of the slide block (6) near the cylindrical shaft (12). Two rectangular shafts (11) are connected to the cylindrical shaft (12) through the rectangular hole (61). The rectangular shafts (11) are slidably connected to the slide block (6) through the rectangular hole (61). The three cylindrical shafts (12) are arranged in a stepped manner, gradually shortening from front to back. Both rectangular shafts (11) have threaded grooves (111) on the side away from the cylindrical shaft (12). A screw (112) is provided inside the threaded groove (111). Gears (113) are installed on both the screw (112) and the cylindrical shaft (12) in the middle position. One end of the cylindrical shaft (12) in the middle position is connected to a central shaft (114). A handle (115) is connected to one side of the central shaft (114). Bearings (116) are connected between the central shaft (114) and the two screws (112) in the front and rear positions and the side wall of the slide (6). The three gears (113) mesh with each other. The cylindrical shaft (12) in the middle position and the two screws (112) in the front and rear positions are rotatably connected through the gears (113). One end of the screw (112) is rotatably connected to the side wall of the slide (6) via the bearing (116), and the other end is inserted into the threaded groove (111) and threadedly connected to the rectangular shaft (11). The thread directions of the two screws (112) at the front and rear positions are opposite.

2. The chamfering device for the carbide ring according to claim 1, characterized in that: The clamping block (123) has a T-shaped cross section. There are four clamping blocks (123) and four telescopic grooves (121), which are arranged circumferentially at equal intervals within the cylindrical shaft (12). The second piston (122) is slidably connected to the telescopic grooves (121), and all four telescopic grooves (121) are connected to the ventilation groove (125).

3. The chamfering device for the cemented carbide ring according to claim 1, characterized in that: The material turning mechanism (9) includes a fixed base (91), a U-shaped plate (92) is provided above the fixed base (91), a rotating shaft (93) is connected between the middle of the U-shaped plate (92) and the fixed base (91), one end of the rotating shaft (93) passes through the side wall of the fixed base (91) and is connected to a material turning motor (94), an 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 vent 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).

4. The chamfering device for the cemented carbide ring according to claim 3, characterized in that: The fixed seat (91) is a plate with an L-shaped cross section. The fixed seat (91) is installed on the moving part of the second drive cylinder (8). The U-shaped plate (92) is a horizontally placed U-shape. The U-shaped plate (92) is rotatably connected to the fixed seat (91) via the rotating shaft (93).

5. The chamfering device for the cemented carbide ring according to claim 3, 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 permanent magnet. The position of the movable block (97) corresponds to the three cylindrical shafts (12). The movable block (97) is locked to the outside of the cylindrical shaft (12) through the U-shaped groove (98).

6. The chamfering device for the cemented carbide ring according to claim 3, characterized in that: The first vent pipe (99) is connected to a high-pressure air pump unit (14) at one end away from the U-shaped groove (98), and the second vent pipe (126) is connected to the high-pressure air pump unit (14) at one end away from the vent groove (125). The high-pressure air pump unit (14) is installed at the bottom of the frame (1).

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