Vertical internal and external grinding machine and grinding method thereof

Abstract

The invention discloses a vertical internal and external circular grinding machine and a grinding method thereof, and relates to the technical field of grinding machine equipment.The vertical internal and external circular grinding machine comprises a workbench and a disc rotationally connected to the top of the workbench, a supporting frame is fixedly connected to the top of the workbench, and first connecting frames are fixedly connected to the two sides of the supporting frame; a first grinding roller is rotationally connected to the inner side of the first connecting frame, a first driving motor is installed on one side of the first connecting frame, and the output end of the first driving motor is connected with the first grinding roller; and the fixing seats are fixedly connected to the top of the disc, and the number of the fixing seats is four. By arranging the switching assistor, the circular ring workpiece can be clamped through switching of the four pressing blocks in the process that the rotating ring drives the circular ring workpiece to rotate circumferentially, the top of the circular ring workpiece cannot be shielded all the time, and therefore the device can continuously conduct grinding operation, and the grinding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machine equipment, and in particular to a vertical internal and external cylindrical grinding machine and a grinding method thereof. Background Art

[0002] The vertical internal and external cylindrical grinding machine combines the functions of internal cylindrical grinding and external cylindrical grinding, and can complete the precision grinding of the inner hole, outer circle and end face of the workpiece through one clamping. The design of this grinding machine aims to improve production efficiency, ensure machining accuracy, and reduce errors caused by multiple clamps. It is widely used in the fields of aviation, automobile, machinery, mold manufacturing, precision machinery, etc., for processing various high-precision and high-difficulty internal and external cylindrical parts and end face parts, such as bearings, gears, swing rods, shock absorbers, etc.

[0003] When the existing vertical internal and external cylindrical grinding machine grinds the workpiece, the workpiece is first clamped by a clamping device and then the grinding operation is carried out. However, the clamped part of the workpiece is often not ground, and a secondary grinding operation is required, thus reducing the overall processing efficiency of the device. Therefore, we provide a vertical internal and external cylindrical grinding machine and a grinding method thereof to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical internal and external cylindrical grinding machine and a grinding method thereof to solve the problem that the clamped part of the workpiece is not ground when the vertical internal and external cylindrical grinding machine grinds the workpiece.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A vertical internal and external cylindrical grinding machine, comprising: a workbench and a disc rotatably connected to the top of the workbench, a support frame fixedly connected to the top of the workbench, first connecting frames fixedly connected to both sides of the support frame, a first grinding roller rotatably connected to the inner side of the first connecting frame, a first driving motor installed on one side of the first connecting frame, and the output end of the first driving motor is connected to the first grinding roller; a fixed seat fixedly connected to the top of the disc, and there are four fixed seats, and the four fixed seats are distributed around the top of the disc in a circular pattern. A tray is fixedly connected to the top of the fixed seat, and a ring workpiece is placed on the top of the tray; a switching auxiliary device located on the top of the fixed seat for switching the clamping of the ring workpiece; a progressive regulator located on the top of the fixed seat for cooperating with the switching auxiliary device to clamp the ring workpiece after grinding; a blowing and cleaning mechanism located on one side of the ring workpiece for cleaning the surface of the ring workpiece after grinding.

[0006] As a further scheme of the present invention: the switching assistant includes an auxiliary frame fixedly connected to one side of the fixed seat, one side of the auxiliary frame is equipped with a second driving motor, the output end of the second driving motor is connected to a connecting shaft, and one end of the connecting shaft passes through the inner side of the auxiliary frame and is fixedly connected to a rotating ring through a connecting plate, four rotating blocks are arranged on the inner side of the rotating ring, and a clamping block is arranged on the inner side of each rotating block, one side of the rotating ring is fixedly connected to a connecting seat, the connecting seat is arranged on both sides of the rotating block, both sides of the rotating block are fixedly connected with a rotating shaft, and one end of the rotating shaft passes through the outside of the connecting seat and is rotatably connected to the connecting seat, a torsion spring is installed between the rotating shaft and the connecting seat, the inner side of the rotating ring is rotatably connected with a rotating ring, one side of the rotating ring is rotatably connected to a second grinding roller, and the inner side of the rotating ring is provided with a toggle component for toggling the rotating block to rotate.

[0007] As a further solution of the present invention: the toggle assembly includes a cylinder installed on the inner side of the rotating ring, the output end of the cylinder passes through the outside of the rotating ring and is fixedly connected to a connecting ring, four power rods are arranged on the inner side of the connecting ring, and one end of each of the power rods passes through the inner side of the rotating ring and is rotatably connected to a roller.

[0008] As a further solution of the present invention: the switching assistant also includes a second connecting frame fixedly connected to one side of the connecting ring, a reciprocating screw is rotatably connected to the inner side of the second connecting frame, one end of the reciprocating screw is fixedly connected to the second spur gear, the power rod is installed on the outer wall of the reciprocating screw, and the power rod is slidably connected to the inner side of the connecting ring, two second connecting rods are fixedly connected to the top of the auxiliary frame, the two second connecting rods are symmetrically arranged about the central axis of the auxiliary frame, and one end of each second connecting rod is fixedly connected to a first arc-shaped rack meshing with the second spur gear.

[0009] As a further solution of the present invention: the progressive adjuster includes a one-way threaded screw rotatably connected to the inner side of the rotating block, the clamping block is threadedly connected to the outer wall of the one-way threaded screw, one end of the one-way threaded screw passes through the outside of the rotating block and is fixedly connected to a first spur gear, the top of the auxiliary frame is fixedly connected to a first connecting rod, and one end of the first connecting rod is fixedly connected to a second arc-shaped rack meshing with the first spur gear.

[0010] As a further solution of the present invention: one side of the clamping block is fixedly connected to a limiting block, the inner side of the rotating block is provided with a limiting groove matching the limiting block, and the clamping block is slidably connected to the rotating block via the limiting block fixedly connected on one side.

[0011] As a further solution of the present invention: The air-blowing cleaning mechanism includes four inflatable chambers fixedly connected to one side of the rotating ring. Each inflatable chamber is arranged below one of the pressing blocks. A connecting pipe is fixedly connected to the air outlet of the inflatable chamber. One end of the connecting pipe is fixedly connected to a blowing block, and a blowing groove communicating with the connecting pipe is formed inside the blowing block.

[0012] As a further solution of the present invention: The air-blowing cleaning mechanism further includes a piston block slidably connected to the inner side of the inflatable chamber. A connecting spring is installed between the piston block and the inflatable chamber, and a spherical rod is fixedly connected to the top of the piston block.

[0013] The present invention also discloses a grinding method for a vertical internal and external cylindrical grinding machine. Using the above-mentioned vertical internal and external cylindrical grinding machine, it includes the following steps: S1. First, a first driving component for driving the disc to rotate circumferentially is installed on the top of the workbench. The first driving component is composed of a servo motor and a gear and is used to drive the disc to rotate circumferentially. Place the two ring workpieces to be processed on the top of the tray for support. Then, the cylinder can be started. The output end of the cylinder drives the connecting ring to move towards the rotating ring, so that the four power rods respectively move towards one of the rotating blocks. When three of the rollers respectively contact one of the rotating blocks, they push one of the rotating blocks to rotate towards the ring workpiece, so as to form a clamp on the ring workpiece through the three pressing blocks. When both ring workpieces are clamped, the disc can be driven by the driving component to rotate 90 degrees circumferentially, so that the ring workpiece to be processed rotates to the bottom of the first grinding roller, and the ring workpiece that has been processed rotates to other positions, facilitating manual loading and unloading by the staff while the device is always performing grinding operations, thereby improving the overall grinding efficiency of the device; S2. A servo motor for driving the second grinding roller to rotate circumferentially is installed on one side of the rotating ring. A second driving component for driving the rotating ring to rotate circumferentially is installed on the back of the rotating ring. The second driving component is also composed of a servo motor and a gear and is used to drive the rotating ring to rotate circumferentially. After the circular ring workpiece is installed, the second grinding roller is attached to the inner wall of the circular ring workpiece. When the circular ring workpiece to be processed rotates to the bottom of the first grinding roller, the first driving motor, the servo motor for driving the second grinding roller to rotate, and the second driving component can be started to drive the second grinding roller to perform circumferential grinding, so that the second grinding roller and the first grinding roller rotate synchronously to grind the inner and outer walls of the circular ring workpiece synchronously. At the same time, the second driving motor rotates, and the output end of the second driving motor drives the connecting shaft to drive the rotating ring to rotate circumferentially. During this process, when the power rod at the top of the circular ring workpiece rotates to the side, the second straight gear contacts one of the first arc-shaped racks, and drives the reciprocating lead screw to rotate under the drive of the first arc-shaped rack, so as to drive the power rod to move towards the rotating block, so that the rotating block originally located at the top will rotate towards the circular ring workpiece. At the same time, the second straight gear on one side of the power rod that rotates from the side to the top contacts one of the first arc-shaped racks, so as to drive the power rod away from the rotating block, so that the rotating block that rotates from the side to the top is reset and unfolded without external force, and the rotating block originally located at the top can be pressed against the top of the circular ring workpiece and form a clamp on the circular ring workpiece with other rotating blocks. By reciprocating in this way, the circular ring workpiece can be clamped alternately, so that there is always no obstacle at the top of the circular ring workpiece, thereby improving the grinding efficiency of the circular ring workpiece; S3. When the rotating block at the top of the circular ring workpiece rotates to the side and the second straight gear has not yet contacted one of the first arc-shaped racks, the first straight gear first contacts the second arc-shaped rack, and thus drives the one-way threaded screw to rotate under the action of the second arc-shaped rack, so as to drive the pressing block to move away from the rotating block. When the first straight gear separates from the second arc-shaped rack, the second straight gear contacts the first arc-shaped rack, so that the pressing block originally located at the top of the circular ring workpiece can advance a certain distance during the process of switching to the side position, so that the pressing block after advancement can stably clamp the outer wall of the circular ring workpiece, avoiding instability when the circular ring workpiece is clamped again after a certain thickness of the outer part of the circular ring workpiece is ground, thereby improving the clamping stability; S4. When the rotating block rotates towards the ring workpiece and contacts the spherical rod at the same time, it pushes the spherical rod to drive the piston block to move downward, thereby pushing the gas inside the inflatable chamber into the blowing groove and blowing it out from the inside of the blowing groove. When the pressing block has not reached the clamping position, the residue at the clamping position is first blown away by the gas, so as to improve the clamping stability.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the switching auxiliary device, during the process of the rotating ring driving the ring workpiece to rotate circumferentially, the ring workpiece can be clamped by switching four pressing blocks, so that the top of the ring workpiece is never blocked, so that the device can continuously perform grinding operations and improve the grinding efficiency; 2. By setting the progressive regulator, when the rotating block located at the top of the ring workpiece rotates sideways and the second straight gear has not contacted a first arc-shaped rack, the first straight gear first contacts the second arc-shaped rack, and thus drives the one-way threaded screw rod to rotate under the action of the second arc-shaped rack, thereby driving the pressing block to move away from the rotating block. When the first straight gear separates from the second arc-shaped rack, the second straight gear contacts the first arc-shaped rack, so that the pressing block originally located at the top of the ring workpiece can advance a certain distance during the process of switching to the side position, so that the pressing block after progression can stably clamp on the outer wall of the ring workpiece, avoiding instability when clamping again after a certain thickness of the outer part of the ring workpiece is ground, thereby improving the clamping stability; 3. By setting the blowing and cleaning mechanism, when the rotating block rotates towards the ring workpiece and contacts the spherical rod at the same time, it pushes the spherical rod to drive the piston block to move downward, thereby pushing the gas inside the inflatable chamber into the blowing groove and blowing it out from the inside of the blowing groove. When the pressing block has not reached the clamping position, the residue at the clamping position is first blown away by the gas, so as to improve the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic inner structure diagram of the auxiliary frame of the present invention; Figure 3 of the present invention Figure 2 is an enlarged view of part A in the present invention; Figure 4 is a cross-sectional view of the rotating ring of the present invention; Figure 5 of the present invention Figure 4 is an enlarged view of part B in the present invention; Figure 6 is a schematic inner structure diagram of the rotating ring of the present invention; Figure 7 of the present invention Figure 6Enlarged view at position C in the [Chinese context]; Figure 8 Cross-sectional view of the inflatable chamber of the present invention; Figure 9 Schematic diagram of the connection between the connecting shaft and the rotating ring of the present invention.

[0016] In the figure: 1, workbench; 2, disc; 3, support frame; 4, fixed seat; 5, ring workpiece; 6, first connecting frame; 7, first grinding roller; 8, first driving motor; 9, auxiliary frame; 10, rotating ring; 11, second driving motor; 12, connecting shaft; 13, first connecting rod; 14, second connecting rod; 15, connecting ring; 16, tray; 17, second grinding roller; 18, inflatable chamber; 19, blowing block; 20, connecting seat; 21, rotating shaft; 22, torsion spring; 23, cylinder; 24, spherical rod; 25, piston block; 26, pressing block; 27, first arc-shaped rack; 28, roller; 29, power rod; 30, rotating block; 31, one-way threaded lead screw; 32, first spur gear; 33, second arc-shaped rack; 34, second spur gear; 35, reciprocating lead screw; 36, second connecting frame; 37, connecting pipe; 38, connecting spring; 39, blowing groove; 40, rotating ring; 41, connecting plate. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes the embodiments according to the overall structure of the present invention.

[0019] Embodiment 1 Please refer to Figures 1 to 9The present embodiment provides a vertical internal and external cylindrical grinding machine, comprising: a workbench 1 and a disc 2 rotatably connected to the top of the workbench 1, a support frame 3 is fixedly connected to the top of the workbench 1, first connecting frames 6 are fixedly connected to both sides of the supporting frame 3, a first grinding roller 7 is rotatably connected to the inner side of the first connecting frame 6, a first driving motor 8 is installed on one side of the first connecting frame 6, and the output end of the first driving motor 8 is connected to the first grinding roller 7; a fixed seat 4, the fixed seat 4 is fixedly connected to the top of the disc 2, and four fixed seats 4 are arranged, and the four fixed seats 4 are distributed around the top of the disc 2, the top of the fixed seat 4 is fixedly connected to a tray 16, and the top of the tray 16 is placed A circular workpiece 5 is placed; a switching assistant is located on the top of the fixed seat 4 and is used for switching and clamping the circular workpiece 5. The switching assistant includes an auxiliary frame 9 fixedly connected to one side of the fixed seat 4, and a second drive motor 11 is installed on one side of the auxiliary frame 9. The output end of the second drive motor 11 is connected to a connecting shaft 12, and one end of the connecting shaft 12 passes through the inner side of the auxiliary frame 9 and is fixedly connected to a rotating ring 10 through a connecting plate 41. Four rotating blocks 30 are arranged on the inner side of the rotating ring 10, and a clamping block 26 is arranged on the inner side of each rotating block 30. A connecting seat 20 is fixedly connected to one side of the rotating ring 10, and the connecting seat 20 is arranged on both sides of the rotating block 30. The rotating block 30 is fixedly connected with a rotating shaft 21 on both sides, and one end of the rotating shaft 21 passes through the outside of the connecting seat 20 and is rotatably connected to the connecting seat 20. A torsion spring 22 is installed between the rotating shaft 21 and the connecting seat 20. The inner side of the rotating ring 10 is rotatably connected with a rotating ring 40, and one side of the rotating ring 40 is rotatably connected with a second grinding roller 17. The inner side of the rotating ring 10 is provided with a toggle assembly for toggling the rotating block 30 to rotate. The toggle assembly includes a cylinder 23 installed on the inner side of the rotating ring 10. The output end of the cylinder 23 passes through the outside of the rotating ring 10 and is fixedly connected to the connecting ring 15. Four power rods 29 are provided on the inner side of the connecting ring 15, and each power rod 29 One end of each of the auxiliary frame 9 passes through the inner side of the rotating ring 10 and is rotatably connected to a roller 28. The switching assistant also includes a second connecting frame 36 fixedly connected to one side of the connecting ring 15. A reciprocating screw rod 35 is rotatably connected to the inner side of the second connecting frame 36. One end of the reciprocating screw rod 35 is fixedly connected to a second spur gear 34. A power rod 29 is installed on the outer wall of the reciprocating screw rod 35, and the power rod 29 is slidably connected to the inner side of the connecting ring 15. Two second connecting rods 14 are fixedly connected to the top of the auxiliary frame 9. The two second connecting rods 14 are symmetrically arranged with respect to the central axis of the auxiliary frame 9. One end of each second connecting rod 14 is fixedly connected to a first arc-shaped rack 27 meshing with the second spur gear 34. First, a first driving component for driving the disc 2 to rotate circumferentially is installed on the top of the workbench 1. The first driving component consists of a servo motor and a gear and is used to drive the disc 2 to rotate circumferentially. Two ring workpieces 5 to be processed are placed on the top of the tray 16 for support. Subsequently, the air cylinder 23 can be started. The output end of the air cylinder 23 drives the connecting ring 15 to move towards the rotating ring 10, so that the four power rods 29 move towards a rotating block 30 respectively. When three rollers 28 contact a rotating block 30 respectively, they push a rotating block 30 to rotate towards the ring workpiece 5, and thus the ring workpiece 5 is clamped by three pressing blocks 26. After both ring workpieces 5 are clamped, the driving component can be used to drive the disc 2 to rotate circumferentially by 90 degrees, so that the ring workpiece 5 to be processed rotates to the bottom of the first grinding roller 7, and the processed ring workpiece 5 rotates to other positions, facilitating the manual loading and unloading by the staff while the device is always performing grinding operations, thereby improving the overall grinding efficiency of the device; A servo motor for driving the second grinding roller 17 to rotate circumferentially is installed on one side of the rotating ring 40. A second driving component for driving the rotating ring 40 to rotate circumferentially is installed on the back of the rotating ring 10. The second driving component also consists of a servo motor and a gear and is used to drive the rotating ring 40 to rotate circumferentially. After the ring workpiece 5 is installed, the second grinding roller 17 is attached to the inner wall of the ring workpiece 5. When the ring workpiece 5 to be processed rotates to the bottom of the first grinding roller 7, the first driving motor 8, the servo motor for driving the second grinding roller 17 to rotate, and the second driving component can be started to drive the second grinding roller 17 to perform circumferential grinding, so that the second grinding roller 17 and the first grinding roller 7 rotate synchronously to grind the inner and outer walls of the ring workpiece 5 simultaneously. At the same time, the second driving motor 11 rotates. The output end of the second driving motor 11 drives the connecting shaft 12 to drive the rotating ring 10 to rotate circumferentially. During this process, when the power rod 29 at the top of the ring workpiece 5 rotates to the side, the second straight gear 34 contacts a first arc-shaped rack 27. Driven by the first arc-shaped rack 27, the reciprocating lead screw 35 rotates, thereby driving the power rod 29 to move towards the rotating block 30, so that the original rotating block 30 at the top will rotate towards the ring workpiece 5. At the same time, the second straight gear 34 on one side of the power rod 29 that rotates from the side to the top contacts a first arc-shaped rack 27, thereby driving the power rod 29 away from the rotating block 30, so that the rotating block 30 that rotates from the side to the top is reset and unfolded without external force, and the original rotating block 30 at the top can be pressed against the top of the ring workpiece 5 to form a clamp on the ring workpiece 5 with other rotating blocks 30. By reciprocating in this way, the clamping of the ring workpiece 5 can be switched, so that there is always no obstruction on the top of the ring workpiece 5, thereby improving the grinding efficiency of the ring workpiece 5.

[0020] Embodiment 2 Progressive regulator, located at the top of the fixed seat 4, is used to cooperate with the switching auxiliary to clamp the polished circular ring workpiece 5. The progressive regulator includes a one-way threaded screw rod 31 rotatably connected inside the rotating block 30. The pressing block 26 is threadedly connected to the outer wall of the one-way threaded screw rod 31. One end of the one-way threaded screw rod 31 penetrates to the outside of the rotating block 30 and is fixedly connected with a first straight gear 32. The top of the auxiliary frame 9 is fixedly connected with a first connecting rod 13. One end of the first connecting rod 13 is fixedly connected with a second arc-shaped rack 33 meshing with the first straight gear 32. One side of the pressing block 26 is fixedly connected with a limiting block. A limiting chute matching with the limiting block is opened inside the rotating block 30. The pressing block 26 is slidably connected with the rotating block 30 through the limiting block fixedly connected to one side; When the rotating block 30 located at the top of the circular ring workpiece 5 rotates sideways and the second straight gear 34 has not yet contacted a first arc-shaped rack 27, the first straight gear 32 first contacts the second arc-shaped rack 33, so as to drive the one-way threaded screw rod 31 to rotate under the action of the second arc-shaped rack 33, thereby driving the pressing block 26 to move away from the rotating block 30. When the first straight gear 32 is separated from the second arc-shaped rack 33, the second straight gear 34 contacts the first arc-shaped rack 27, so that the pressing block 26 originally located at the top of the circular ring workpiece 5 can progress a certain distance during the process of switching to the side position, so that the pressing block 26 after progression can stably clamp on the outer wall of the circular ring workpiece 5, avoiding instability when clamping again after a certain thickness of the outer part of the circular ring workpiece 5 is ground, thereby improving the clamping stability.

[0021] Embodiment 3 Blowing and cleaning mechanism, located on one side of the circular ring workpiece 5, is used to clean the surface of the polished circular ring workpiece 5. The blowing and cleaning mechanism includes four inflatable chambers 18 fixedly connected to one side of the rotating ring 10. Each inflatable chamber 18 is arranged below a pressing block 26. A connecting pipe 37 is fixedly connected to the air outlet of the inflatable chamber 18. One end of the connecting pipe 37 is fixedly connected with a blowing block 19. A blowing groove 39 communicating with the connecting pipe 37 is opened inside the blowing block 19. The blowing and cleaning mechanism further includes a piston block 25 slidably connected inside the inflatable chamber 18. A connecting spring 38 is installed between the piston block 25 and the inflatable chamber 18. The top of the piston block 25 is fixedly connected with a spherical rod 24; When the rotating block 30 rotates towards the circular ring workpiece 5 and contacts the spherical rod 24, it pushes the spherical rod 24 to drive the piston block 25 to move downward, thereby pushing the gas inside the inflatable chamber 18 into the blowing groove 39 and blowing it out from the blowing groove 39, so that before the pressing block 26 reaches the clamping position, the residues at the clamping position are first blown away by the gas, thereby improving the clamping stability.

[0022] The following provides a grinding method for a vertical internal and external cylindrical grinding machine in combination with the above-mentioned vertical internal and external cylindrical grinding machine, which specifically includes the following steps: S1. First, a first driving component for driving the disc 2 to rotate circumferentially is installed on the top of the workbench 1, and the first driving component is composed of a servo motor and a gear, which is used to drive the disc 2 to rotate circumferentially. Place the two ring workpieces 5 to be processed on the top of the tray 16 for support. Subsequently, the air cylinder 23 can be started, and the output end of the air cylinder 23 drives the connecting ring 15 to move towards the rotating ring 10, so that the four power rods 29 respectively move towards a rotating block 30. When three of the rollers 28 are in contact with a rotating block 30 respectively, they push a rotating block 30 to rotate towards the ring workpiece 5, so as to clamp the ring workpiece 5 through the three pressing blocks 26. After both ring workpieces 5 are clamped, the disc 2 can be driven by the driving component to rotate circumferentially by 90 degrees, so that the ring workpiece 5 to be processed rotates to the bottom of the first grinding roller 7, and the ring workpiece 5 that has been processed rotates to other positions, facilitating manual loading and unloading by the staff while the device is always performing grinding operations, thereby improving the overall grinding efficiency of the device; S2. On one side of the rotating ring 40, a servo motor for driving the second grinding roller 17 to rotate circumferentially is installed. On the back of the rotating ring 10, a second driving component for driving the rotating ring 40 to rotate circumferentially is installed. The second driving component is also composed of a servo motor and a gear and is used to drive the rotating ring 40 to rotate circumferentially. After the circular ring workpiece 5 is installed, the second grinding roller 17 is attached to the inner wall of the circular ring workpiece 5. When the circular ring workpiece 5 to be processed rotates to the bottom of the first grinding roller 7, the first driving motor 8, the servo motor for driving the second grinding roller 17 to rotate, and the second driving component can be started to drive the second grinding roller 17 to perform circumferential grinding, so that the second grinding roller 17 rotates synchronously with the first grinding roller 7 to synchronously grind the inner wall and the outer wall of the circular ring workpiece 5. At the same time, the second driving motor 11 rotates, and the output end of the second driving motor 11 drives the connecting shaft 12 to drive the rotating ring 10 to rotate circumferentially. During this process, when the power rod 29 at the top of the circular ring workpiece 5 rotates to the side, the second straight gear 34 contacts a first arc-shaped rack 27. Driven by the first arc-shaped rack 27, the reciprocating lead screw 35 rotates, thereby driving the power rod 29 to move towards the rotating block 30, causing the original rotating block 30 at the top to rotate towards the circular ring workpiece 5. At the same time, the second straight gear 34 on one side of the power rod 29 that rotates from the side to the top contacts a first arc-shaped rack 27, thereby driving the power rod 29 away from the rotating block 30, so that the rotating block 30 that rotates from the side to the top is reset and unfolded without external force, and the original rotating block 30 at the top can be pressed against the top of the circular ring workpiece 5 to form a clamp on the circular ring workpiece 5 with other rotating blocks 30. By reciprocating in this way, the clamping of the circular ring workpiece 5 can be switched, so that there is always no obstruction at the top of the circular ring workpiece 5, thereby improving the grinding efficiency of the circular ring workpiece 5; S3. When the rotating block 30 at the top of the circular ring workpiece 5 rotates towards the side and the second straight gear 34 has not yet contacted a first arc-shaped rack 27, the first straight gear 32 first contacts the second arc-shaped rack 33, thereby driving the one-way lead screw 31 to rotate under the action of the second arc-shaped rack 33, and driving the pressing block 26 to move away from the rotating block 30. After the first straight gear 32 separates from the second arc-shaped rack 33, the second straight gear 34 contacts the first arc-shaped rack 27, so that the original pressing block 26 at the top of the circular ring workpiece 5 can advance a certain distance during the process of switching to the side position, so that the pressing block 26 after advancement can stably clamp the outer wall of the circular ring workpiece 5, avoiding instability when clamping again after a certain thickness of the outer part of the circular ring workpiece 5 is ground, thereby improving the clamping stability; S4. When the rotating block 30 rotates towards the ring workpiece 5 and contacts the spherical rod 24 at the same time, it pushes the spherical rod 24 to drive the piston block 25 to move downward, thereby pushing the gas inside the inflatable chamber 18 into the air blowing groove 39 and blowing it out from the inside of the air blowing groove 39. When the pressing block 26 has not reached the clamping position, the residue at the clamping position is first blown away by the gas, so as to improve the clamping stability.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A vertical internal and external cylindrical grinding machine, characterized in that: include: A workbench (1) and a disc (2) rotatably connected to the top of the workbench (1); a support frame (3) is fixedly connected to the top of the workbench (1); first connecting frames (6) are fixedly connected to both sides of the support frame (3); a first grinding roller (7) is rotatably connected to the inner side of the first connecting frame (6); a first drive motor (8) is installed on one side of the first connecting frame (6); and an output end of the first drive motor (8) is connected to the first grinding roller (7); A fixing seat (4), the fixing seat (4) being fixedly connected to the top of the disc (2), and four fixing seats (4) are provided, and the four fixing seats (4) are distributed around the top of the disc (2), and a tray (16) is fixedly connected to the top of the fixing seat (4), and a circular workpiece (5) is placed on the top of the tray (16); A switching assistant, located on the top of the fixing seat (4), and used for switching and clamping the annular workpiece (5); A progressive adjuster, located on the top of the fixing seat (4), used to cooperate with the switching auxiliary device to clamp the polished annular workpiece (5); An air blowing cleaning mechanism is located on one side of the annular workpiece (5) and is used to clean the surface of the annular workpiece (5) after grinding.

2. A vertical internal and external cylindrical grinding machine according to claim 1, characterized in that: The switching assistant comprises an auxiliary frame (9) fixedly connected to one side of the fixed seat (4); a second drive motor (11) is mounted on one side of the auxiliary frame (9); an output end of the second drive motor (11) is connected to a connecting shaft (12); one end of the connecting shaft (12) passes through the inner side of the auxiliary frame (9) and is fixedly connected to a rotating ring (10) via a connecting plate (41); four rotating blocks (30) are arranged on the inner side of the rotating ring (10); a pressing block (26) is arranged on the inner side of each rotating block (30); and one side of the rotating ring (10) is fixedly connected to a connecting seat (20). The connecting seat (20) is arranged on both sides of the rotating block (30), and the two sides of the rotating block (30) are fixedly connected with a rotating shaft (21), and one end of the rotating shaft (21) passes through the outside of the connecting seat (20) and is rotatably connected to the connecting seat (20), and a torsion spring (22) is installed between the rotating shaft (21) and the connecting seat (20), and the inner side of the rotating ring (10) is rotatably connected with a rotating ring (40), and one side of the rotating ring (40) is rotatably connected with a second grinding roller (17), and the inner side of the rotating ring (10) is provided with a toggle component for toggling the rotating block (30) to rotate.

3. A vertical internal and external cylindrical grinding machine according to claim 2, characterized in that: The toggle assembly comprises a cylinder (23) mounted on the inner side of the rotating ring (10); the output end of the cylinder (23) penetrates the outer side of the rotating ring (10) and is fixedly connected to a connecting ring (15); four power rods (29) are arranged on the inner side of the connecting ring (15); and one end of each power rod (29) penetrates the inner side of the rotating ring (10) and is rotatably connected to a roller (28).

4. A vertical internal and external cylindrical grinding machine according to claim 3, characterized in that: The switching auxiliary device further comprises a second connecting frame (36) fixedly connected to one side of the connecting ring (15); a reciprocating screw rod (35) is rotatably connected to the inner side of the second connecting frame (36); one end of the reciprocating screw rod (35) is fixedly connected to a second spur gear (34); the power rod (29) is mounted on the outer wall of the reciprocating screw rod (35), and the power rod (29) is slidably connected to the inner side of the connecting ring (15); two second connecting rods (14) are fixedly connected to the top of the auxiliary frame (9); the two second connecting rods (14) are symmetrically arranged about the central axis of the auxiliary frame (9); one end of each second connecting rod (14) is fixedly connected to a first arc-shaped rack (27) meshing with the second spur gear (34).

5. A vertical internal and external cylindrical grinding machine according to claim 4, characterized in that: The progressive adjuster comprises a one-way threaded screw (31) rotatably connected to the inner side of the rotating block (30); the pressing block (26) is threadedly connected to the outer wall of the one-way threaded screw (31); one end of the one-way threaded screw (31) passes through the outside of the rotating block (30) and is fixedly connected to a first spur gear (32); the top of the auxiliary frame (9) is fixedly connected to a first connecting rod (13); one end of the first connecting rod (13) is fixedly connected to a second arc-shaped rack (33) meshing with the first spur gear (32).

6. A vertical internal and external cylindrical grinding machine according to claim 5, characterized in that: One side of the pressing block (26) is fixedly connected to a limit block, and the inner side of the rotating block (30) is provided with a limit sliding groove matching the limit block, and the pressing block (26) is slidably connected to the rotating block (30) via the limit block fixedly connected to one side.

7. A vertical internal and external cylindrical grinding machine according to claim 6, characterized in that: The air blowing cleaning mechanism comprises four air filling chambers (18) fixedly connected to one side of the rotating ring (10), each of the air filling chambers (18) being arranged below one of the pressing blocks (26), a connecting pipe (37) being fixedly connected to the air outlet of the air filling chamber (18), one end of the connecting pipe (37) being fixedly connected to an air blowing block (19), and an air blowing groove (39) communicating with the connecting pipe (37) being provided inside the air blowing block (19).

8. The vertical internal and external cylindrical grinding machine according to claim 7, characterized in that: The air blowing and cleaning mechanism further comprises a piston block (25) slidably connected to the inner side of the air charging chamber (18), a connecting spring (38) is installed between the piston block (25) and the air charging chamber (18), and a spherical rod (24) is fixedly connected to the top of the piston block (25).

9. A grinding method of a vertical internal and external cylindrical grinder, characterized in that: The vertical internal and external cylindrical grinding machine according to claim 8 comprises the following steps: S1. First, a first driving component for driving the disc (2) to rotate in a circular motion is installed on the top of the workbench (1), and the first driving component is composed of a servo motor and a gear, and is used to drive the disc (2) to rotate in a circular motion. The two circular workpieces (5) to be processed are placed on the top of the tray (16) for support. Then, the cylinder (23) can be started, and the output end of the cylinder (23) drives the connecting ring (15) to move in the direction of the rotating ring (10), so that the four power rods (29) respectively move in the direction of one of the rotating blocks (30), and the three rollers (28) are respectively connected to one of the rotating blocks (30). When the rotating blocks (30) are in contact, one of the rotating blocks (30) is pushed to rotate in the direction of the annular workpiece (5), so that the annular workpiece (5) is clamped by the three pressing blocks (26); when the two annular workpieces (5) are clamped, the disc (2) can be driven by a driving component to rotate ninety degrees in a circle, so that the annular workpiece (5) to be processed is rotated to the bottom of the first grinding roller (7), and the annular workpiece (5) that has been processed is rotated to another position, so that the staff can manually load and unload the material while the device is always performing the grinding operation, thereby improving the overall grinding efficiency of the device; S2. A servo motor for driving the second grinding roller (17) to rotate in a circular motion is installed on one side of the rotating ring (40). A second driving component for driving the rotating ring (40) to rotate in a circular motion is installed on the back side of the rotating ring (10). The second driving component is also composed of a servo motor and a gear and is used to drive the rotating ring (40) to rotate in a circular motion. After the circular workpiece (5) is installed, the second grinding roller (17) is attached to the inner wall of the circular workpiece (5). When the circular workpiece (5) to be processed rotates to the bottom of the first grinding roller (7), The first drive motor (8) and the servo motor and the second drive component for driving the second grinding roller (17) to rotate can be started to drive the second grinding roller (17) to perform circumferential grinding, so that the second grinding roller (17) and the first grinding roller (7) rotate synchronously to grind the inner wall and the outer wall of the annular workpiece (5) synchronously. At the same time, the second drive motor (11) rotates, and the output end of the second drive motor (11) drives the connecting shaft (12) to drive the rotating ring (10) to rotate in a circular manner. During this process, the connecting shaft (12) located on the annular workpiece (5) is driven by the connecting shaft (12). ) when the power rod (29) at the top rotates to the side, the second spur gear (34) contacts with one of the first arc-shaped racks (27), and the reciprocating screw rod (35) is driven to rotate by the first arc-shaped rack (27), thereby driving the power rod (29) to move toward the rotating block (30), so that the rotating block (30) originally located at the top rotates toward the annular workpiece (5), and at the same time, the second spur gear (34) on one side of the power rod (29) rotating from the side to the top contacts with one of the first arc-shaped racks (27). The rotating block (30) is in contact with the rotating rod (29), thereby driving the power rod (29) away from the rotating block (30), so that the rotating block (30) rotated from the side to the top is no longer reset and unfolded under the action of external force, and the rotating block (30) originally located at the top can be pressed against the top of the circular workpiece (5) and other rotating blocks (30) to clamp the circular workpiece (5), so that the circular workpiece (5) can be switched and clamped by reciprocating, so that there is no obstruction on the top of the circular workpiece (5), thereby improving the efficiency of grinding the circular workpiece (5); S3, when the rotating block (30) located at the top of the circular workpiece (5) rotates sideways and the second spur gear (34) has not yet contacted one of the first arc-shaped racks (27), the first spur gear (32) first contacts the second arc-shaped rack (33), thereby driving the one-way threaded screw (31) to rotate under the action of the second arc-shaped rack (33), thereby driving the clamping block (26) to move away from the rotating block (30); when the first spur gear (32) is separated from the second arc-shaped rack (33), the second spur gear (34) contacts the first arc-shaped rack (27), so that the clamping block (26) originally located at the top of the circular workpiece (5) can be advanced a certain distance during the process of switching to the side position, so that after the advancement, the clamping block (26) can be stably clamped on the outer wall of the circular workpiece (5), thereby avoiding instability when the outer part of the circular workpiece (5) is clamped again after being ground to a certain thickness, thereby improving the clamping stability; S4. When the rotating block (30) rotates toward the annular workpiece (5) and contacts the spherical rod (24), the spherical rod (24) is pushed to drive the piston block (25) to move downward, thereby pushing the internal gas of the inflation chamber (18) into the blowing groove (39) and blowing it out from the blowing groove (39), so that when the clamping block (26) has not yet reached the clamping position, the residue at the clamping position is blown away by the gas, thereby improving the clamping stability.

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