Rotary table with angle limiting device

Abstract

The utility model relates to a rotary table provided with an angle limiting device. The rotary table comprises a mounting table, a machine body is detachably connected to the mounting table, a stator and a rotor are detachably connected to the interior of the machine body, the stator and the rotor are coaxially arranged, an abutting ring plate is detachably connected to the rotor, and a rotary table is detachably connected to the end, away from the rotor, of the abutting ring plate; a stepped ring plate is arranged between the rotating table and the abutting ring plate and detachably connected to the machine body, a certain gap is reserved between the rotating table and the stepped ring plate, an angle limiting assembly is detachably connected to the stepped ring plate, a first encoder is fixedly connected to the stepped ring plate, a main shaft is arranged in the machine body and detachably connected to the rotating table, and the first encoder is fixedly connected to the main shaft. A second encoder is arranged in the machine body, arranged on the main shaft in a sleeving mode and matched with the main shaft in a rotating mode. The rotary table has the effect of improving the accuracy and stability when the rotary table rotates.

Description

Technical Field

[0001] The present application relates to the technical field of machining equipment, and in particular to a turntable equipped with an angle limiting device. Background Art

[0002] With the development of the manufacturing industry, CNC machine tools are moving towards higher speed, higher precision, greater flexibility, and higher reliability. A turntable, specifically a device capable of rotating about a single axis, plays a crucial role in automation, particularly in applications requiring precise control and positioning. However, due to the grinding wheel's mounting structure, drive mechanism, and wiring requirements, grinding wheels cannot rotate 360 ​​degrees during machining and can only reciprocate within a specific angular range.

[0003] Chinese patent publication number CN204449914U discloses a large-scale spindle direct-drive rotary table structure, in which the torque motor stator is mounted on the table base, the torque motor rotor is mounted on a connector, and the connector is mounted on the table. The connector is seated on the table base via a thrust ball bearing A. The inner hole of the connector is matingly connected to the outer ring of a double-row cylindrical roller bearing. The double-row cylindrical roller bearing is mounted on the main shaft, which is connected and mounted to the center hole of the table base. The pressure block mounted on the main shaft is connected to the connector via a thrust ball bearing B. The encoder stator is fixed to flange C, which is fixed to the main shaft. The encoder rotor is fixed to the table via flanges A and B. A table cover is connected to the center hole of the table, and the table cover is mounted on flange B.

[0004] In existing technology, operators use the motor's stator to drive the rotor, which in turn drives the worktable, and use an encoder to count the worktable's rotations. However, due to the weight of the grinding wheel's structure, it has inertia during rotation. This can easily cause angular deviations when the angle changes, making it impossible to precisely control the angle range, thus reducing the applicability of the rotary table. Utility Model Content

[0005] In order to improve the accuracy and stability of the turntable during rotation, the present application provides a turntable equipped with an angle limiting device.

[0006] The present application provides a turntable equipped with an angle limiting device, which adopts the following technical solution:

[0007] A turntable equipped with an angle limiting device includes a mounting table, which is detachably connected to an organic body, a stator and a rotor detachably connected to the organic body, and the stator and the rotor are coaxially arranged, an abutment ring plate detachably connected to the rotor, and an end of the abutment ring plate away from the rotor is detachably connected to the rotating table, a step ring plate is provided between the rotating table and the abutment ring plate, the step ring plate is detachably connected to the organic body, and a certain gap is left between the rotating table and the step ring plate, an angle limiting assembly is detachably connected to the step ring plate, a first encoder is fixedly connected to the step ring plate, a main shaft is provided in the organic body, the main shaft is detachably connected to the rotating table, a second encoder is provided in the organic body, the second encoder is sleeved on the main shaft, and rotates with the main shaft.

[0008] By adopting the above technical solution, when the stator drives the rotor to rotate, the rotor drives the abutment ring plate, turntable, and main shaft to rotate. When the turntable and main shaft rotate, the first encoder on the stepped ring plate and the second encoder mounted on the main shaft begin to work, thereby measuring the angle of rotation of the turntable. This is then transmitted to the main control platform via an electrical signal, causing the turntable to stop. The coordination between the first and second encoders further improves the accuracy of the rotation angle. Even if the first encoder is damaged, the second encoder can continue to operate. When the rotor stops rotating and the grinding wheel continues to rotate due to inertia, the angle limiting assembly can stop the turntable, further improving the accuracy and stability of the turntable.

[0009] Optionally, the angle limiting assembly includes a positioning block, two rubber blocks, two proximity sensors and a rotating block. The rotating block is detachably connected to the rotating table. The positioning block has a T-shaped cross-section and is detachably connected to the stepped ring plate. The proximity sensor and the rubber block are fixedly connected to both sides of the positioning block.

[0010] By adopting the above technical solution, the positioning block is removably connected to the stepped ring plate. Depending on the required rotation angle, one or two can be placed on the stepped ring plate to complete the rotation table limitation, improving the applicability of the angle limitation assembly. The rotating block is removably connected to the rotating table. When the rotating table rotates, the rotating block also rotates. When the stator is powered off, the grinding wheel continues to rotate due to inertia. At this time, the proximity sensor fixed to the positioning block first senses it. Then, the rotating block will hit the rubber block and stop. The rubber block can prevent the reduction of the precision of the rotating table due to large vibrations. The proximity sensor and rubber block are installed on both sides of the positioning block, so that the angle of the rotating table can be limited and protected regardless of whether it is rotating forward or reverse.

[0011] Optionally, the angle limiting assembly includes a limit block, a connecting block, an electromagnet, a spring and a limit rod. The limit block is detachably connected to the step ring plate, the connecting block is fixedly connected to the limit block and is away from the side of the turntable. The cross-section of the connecting block is L-shaped. The limit rod is rotatably connected to the connecting block. The electromagnet is located between the limit block and the connecting block. The spring is sleeved on the limit rod, and one end of the spring is fixedly connected to the connecting block, and the other end is fixedly connected to the limit rod. A limit hole is opened on the outer surface of the turntable, and the limit hole is plugged into and fitted with the limit rod.

[0012] By adopting the above technical solution, two sets of angle limiting components are detachably connected to the turntable, and the angle between the two limit blocks is adjustable. The angle between the two limit blocks is the desired limit angle. The turntable is provided with a limit hole that cooperates with the limit rod. When the turntable rotates, the electromagnet on the connecting block is energized, causing the limit rod to be adsorbed on the electromagnet. At this time, the spring is in a compressed state. When the turntable begins to rotate, the electromagnet of the angle limiting assembly at the other end is deenergized, so that the limit rod is pushed out by the spring and abuts against the turntable. When the turntable rotates to the desired limit angle, the limit rod is engaged with the limit hole under the action of the spring, thereby achieving precise definition of the rotation angle.

[0013] Optionally, the body includes a casing and a baffle, which is detachably connected to the casing. Three mounting slots are provided on two mutually opposing sides of the casing, and the three mounting slots are distributed in an L shape. A first preset cavity and a second preset cavity are provided in the body. When the body is installed vertically, the second encoder is located in the first preset cavity. When the body is installed horizontally, the second encoder is located in the second preset cavity.

[0014] By adopting the above technical solution, three mounting slots are provided on two opposing sides of the machine body, and the three mounting slots are arranged in an L-shape. The different installation positions of the mounting slots allow the machine body to be installed not only vertically but also horizontally, further improving the applicability of the turntable. A first preset cavity and a second preset cavity are provided within the machine body. When the machine body is installed vertically, the second encoder is located within the first preset cavity. When the machine body needs to be installed horizontally, the turntable only needs to be disassembled and installed on the baffle. Prior to this, the baffle is disassembled, and the second encoder is removed and placed in the second preset cavity to achieve the conversion between vertical and horizontal positions. This not only improves the applicability of the turntable, but also improves its installation efficiency.

[0015] Optionally, a vent is provided on the machine body, and an air nozzle is fixedly connected to the vent of the machine body.

[0016] By adopting the above technical solution, when the stator drives the rotor to rotate, heat is generated. An air nozzle is fixedly connected to the air vent of the body, so that no matter whether the body is installed vertically or horizontally, an external air pump can be connected through the air nozzle to cool the inside of the body, thereby increasing the service life of the stator and rotor.

[0017] Optionally, a connecting shell is provided on the rotating table, and the cross-section of the connecting shell is L-shaped. One end of the connecting shell can be detachably connected to the rotating table, and a certain gap is left between the other end and the stepped ring plate. A positive pressure cavity is formed between the rotating table, the stepped ring plate and the connecting shell, and a buffer cavity is formed between the rotating table and the stepped ring plate. The buffer cavity and the positive pressure cavity are connected through the gap left between the stepped ring plate and the rotating table.

[0018] By adopting the above technical solution, since the cutting fluid needs to be sprayed when the grinding wheel is processing the workpiece, and the cutting fluid vaporizes after being heated, so that the area around the turntable is filled with water mist, a connecting shell is provided on the turntable, and the cross-section of the connecting shell is U-shaped, one end of which is detachably connected to the turntable, and a certain gap is left between the other end and the stepped ring plate to ensure that the cooled gas passes through, a positive pressure cavity is formed between the connecting shell, the abutting ring plate and the turntable, and a buffer cavity is formed between the turntable and the stepped ring plate. The gas after cooling first enters the buffer cavity. At this time, the water mist outside the connecting shell can enter the positive pressure cavity through the gap between the connecting shell and the stepped ring plate, and then the buffer cavity enters the positive pressure cavity through the gap left between the stepped ring plate and the turntable. As time goes by, the pressure in the positive pressure cavity rises, so that the external water mist cannot enter, forming a balance, thereby preventing the water mist from entering the body, and further improving the service life of the turntable.

[0019] Optionally, sealing rings are provided between the stepped ring plate and the machine body and between the connecting shell and the rotating table.

[0020] By adopting the above technical solution, the sealing ring can prevent water mist from entering the machine body, thereby preventing overheating in the machine body from causing damage to precision components.

[0021] Optionally, a support ring strip is fixedly connected to one side of the step ring plate close to the abutting ring plate, and a one-way sealing assembly is provided between the abutting ring plate and the step ring plate. The one-way sealing assembly includes a support ring pad and an abutting ring pad. The support ring pad abuts against the step ring plate and has an L-shaped cross-section. The abutting ring pad is tilted and forms an angle with the surface of the abutting ring plate. One end of the abutting ring pad is fixedly connected to the support ring pad, and the other end abuts against the abutting ring plate.

[0022] By adopting this technical solution, when the air pump stops working and the water mist on the outside of the connecting shell has not yet dissipated, the water mist will enter the interior of the body through the buffer cavity. Due to the inclined setting of the abutment ring gasket, the water mist cannot enter the body. The abutment ring gasket is made of elastic material. When the gas accumulates to a certain level, the pressure pushes against the abutment ring gasket, allowing the gas to pass through. This further reduces the damage to precision components caused by overheating in the body. The support ring strip fixed to the stepped ring plate provides stable support for the one-way sealing assembly.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the stator drives the rotor to rotate, the rotor drives the abutment ring plate, turntable, and main shaft to rotate. When the turntable and the main shaft rotate, the first encoder on the stepped ring plate and the second encoder mounted on the main shaft start working, thereby measuring the angle of rotation of the turntable, and then transmitting the electrical signal to the main control platform, causing the turntable to stop. The cooperation between the first encoder and the second encoder further improves the accuracy of the rotation angle. And even if the first encoder is damaged, the second encoder can continue to work. When the rotor stops rotating and the grinding wheel continues to rotate under the action of inertia, the angle limiting component can stop the turntable from rotating, thereby further improving the accuracy and stability of the turntable;

[0025] 2. The positioning block is detachably connected to the stepped ring plate. Depending on the required rotation angle, one or two can be placed on the stepped ring plate to complete the limitation of the turntable, improving the applicability of the angle limitation component. The turntable is detachably connected to a rotating block. When the turntable rotates, the rotating block also rotates. When the stator is powered off, the grinding wheel continues to rotate under the action of inertia. At this time, the proximity sensor fixed to the positioning block senses it first, and then the rotating block hits the rubber block and stops. The rubber block can avoid the reduction of the precision of the turntable due to large vibrations. Proximity sensors and rubber blocks are installed on both sides of the positioning block, so that the turntable can be limited and protected in terms of angle regardless of forward or reverse rotation;

[0026] 3. Three mounting slots are provided on two opposing sides of the machine body, and the three mounting slots are arranged in an L-shape. The different installation positions of the mounting slots allow the machine body to be installed not only vertically but also horizontally, further improving the applicability of the turntable. A first preset cavity and a second preset cavity are provided in the machine body. When the machine body is installed vertically, the second encoder is located in the first preset cavity. When the machine body needs to be installed horizontally, the turntable only needs to be disassembled and installed on the baffle. Before this, the baffle is disassembled, and the second encoder is removed and placed in the second preset cavity to achieve the conversion between vertical and horizontal positions. This not only improves the applicability of the turntable, but also improves its installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0028] Figure 2 It is a half-section view of Example 1 of the present application.

[0029] Figure 3 It is a structural diagram of the installation position of the angle limiting component in Example 1 of the present application.

[0030] Figure 4 yes Figure 2 A partial enlarged view of point A in the middle.

[0031] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle.

[0032] Figure 6 It is a schematic diagram of the mechanism of Example 2.

[0033] Figure 7 It is a partial cross-sectional view of the rotating table and the angle limiting component in Example 2.

[0034] Explanation of reference numerals: 1. mounting platform; 2. machine body; 21. housing; 211. mounting groove; 212. first preset cavity; 213. second preset cavity; 214. vent; 2141. air nozzle; 215. first encoder; 22. baffle; 23. stator; 24. rotor; 25. abutting ring plate; 26. stepped ring plate; 261. support ring strip; 262. one-way sealing assembly; 2621. support Ring gasket; 2622, abutting ring gasket; 27, main shaft; 271, second encoder; 3, rotating table; 31, limiting hole; 4, connecting shell; 41, sealing ring; 5, angle limiting assembly; 51, positioning block; 52, rubber block; 53, proximity sensor; 54, rotating block; 55, limiting block; 56, connecting block; 57, electromagnet; 58, spring; 59, limiting rod; 6, positive pressure cavity; 7, buffer cavity. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] Example 1

[0037] Reference Figures 1 to 3 A turntable equipped with an angle limiting device includes a mounting platform 1, to which a body 2 is detachably connected, providing a stable foundation for the entire turntable. A stator 23 and a rotor 24 are provided in the body 2, which are coaxially arranged and detachably connected through bearings. An abutment ring plate 25 is detachably connected to the rotor 24, and then connected to the rotating table 3 via the abutment ring plate 25. Therefore, when the stator 23 drives the rotor 24 to rotate, the rotating table 3 is rotated. An angle limiting component 5 is detachably connected to the rotating table 3, and a first encoder 215 is detachably connected to the stepped ring plate 26 by bolts. A main shaft 27 is provided in the body 2, and the main shaft 27 is detachably connected to the rotating table 3. A second encoder 271 is provided in the body 2, and the second encoder 271 is sleeved on the main shaft 27 and rotates in conjunction with the main shaft 27.

[0038] Reference Figures 1 to 3 When the stator 23 drives the rotor 24 to rotate, the abutment ring plate 25, the turntable 3, and the stepped ring plate 26 also rotate accordingly, causing the grinding wheel on the turntable 3 to rotate. When the grinding wheel rotates, the second encoder 271 and the second encoder 271 start working, measuring the rotation angle of the turntable 3. The signal is then transmitted to the main control platform via an electrical signal, causing the turntable 3 to stop. If the grinding wheel continues to rotate due to inertia, the angle limiting assembly 5 can stop the turntable 3, thereby effectively limiting the rotation range of the turntable 3 and preventing angular deviation caused by inertia.

[0039] Reference Figures 1 to 5 The angle limiting assembly 5 includes a positioning block 51, two rubber blocks 52, two proximity sensors 53, and a rotating block 54. Depending on the desired angle, one or two angle limiting assemblies 5 can be installed on the stepped ring plate 26. The positioning block 51 is removably connected to the stepped ring plate 26 via screws and has a T-shaped cross-section. Rubber blocks 52 and proximity sensors 53 are installed on both sides of the positioning block 51, and both rubber blocks 52 and proximity sensors 53 are fixedly connected to the positioning block 51. The rotating block 54 is removably connected to the rotating table 3.

[0040] Reference Figures 1 to 5 As the grinding wheel continues to rotate due to inertia, the rotating block 54 also rotates. The proximity sensor 53 on the positioning block 51 first senses the movement, and then the rotating block 54 hits the rubber block 52 and stops. The rubber block 52 prevents the precision of the rotating table 3 from being reduced due to large vibrations.

[0041] Reference Figures 2 to 3 The housing 2 includes a casing 21 and a baffle 22. The baffle 22 is detachably connected to the housing 21. Three mounting slots 211 are provided on two opposing sides of the housing 21. The three mounting slots 211 are arranged in an L-shape. Depending on the position of the mounting slots 211, the housing 2 can be installed in either a vertical or horizontal position, thereby improving the applicability of the housing 2. A first pre-set cavity 212 and a second pre-set cavity 213 are provided within the housing 2. When the housing 2 is installed in a vertical position, the second encoder 271 is placed in the first pre-set cavity 212. When the housing 2 needs to be installed in a horizontal position, the operator removes the baffle 22 and places the second encoder 271 in the second pre-set cavity 213, thereby converting the housing 2 from a vertical position to a horizontal position.

[0042] Reference Figures 2 to 3 The body 2 is provided with an air vent 214, and an air nozzle 2141 is provided inside the air vent 214 of the body 2. The air nozzle 2141 is fixedly connected to the air vent 214. When the stator 23 drives the rotor 24 to rotate, heat is generated over a long period of operation. The operator connects an air pump to the air nozzle 2141 of the body 2 to dissipate heat from the inside of the body 2, thereby extending the service life of the turntable.

[0043] Reference Figures 2 to 4 A U-shaped connecting shell 4 is mounted on the turntable 3. One end of the connecting shell 4 is detachably connected to the turntable 3 via bolts, leaving a gap between the other end and the stepped ring plate. A positive pressure cavity 6 is formed between the turntable 3, the stepped ring plate 26, and the connecting shell 4. A buffer cavity 7 is formed between the turntable 3 and the stepped ring plate 26. The buffer cavity 7 communicates with the stepped ring plate 26 through the gap between the connecting shell 4 and the stepped ring plate 26. Seal rings 41 are also installed between the machine body 2 and the stepped ring plate 26, and between the connecting shell 4 and the turntable 3.

[0044] Reference Figures 2 to 4 When the operator uses the grinding wheel to process the workpiece, it is necessary to spray the cutting fluid to cool it and prevent the workpiece from being deformed due to overheating and causing precision problems. Since the cutting fluid vaporizes when heated, the area around the turntable is filled with water mist. Therefore, the connecting shell 4 can prevent the water mist from entering the interior of the machine body 2 and causing damage to the precision components inside the machine body 2.

[0045] Reference Figures 2 to 4At this time, the operator turns on the air pump, allowing the gas to enter the body 2, thereby cooling the body 2. As time goes by, the gas in the body 2 enters the buffer cavity 7 through the gap, and the gas in the buffer cavity 7 enters the positive pressure cavity 6 through the gap between the connecting shell 4 and the stepped ring plate 26. Before this, water mist can enter the positive pressure cavity 6 through the gap between the connecting shell 4 and the stepped ring plate 26. When the gas in the buffer cavity 7 enters the positive pressure cavity 6, the pressure in the positive pressure cavity 6 rises, thereby achieving a pressure difference between the inside and the outside, and maintaining a balance, so that the water mist outside the connecting shell 4 cannot enter the positive pressure cavity 6. This reduces the damage to the precision components inside the body 2 caused by water mist entering the body 2. The service life of the turntable is further improved.

[0046] Reference Figure 3 and Figure 4 A support ring strip 261 is fixedly connected to the stepped ring plate 26. The support ring strip 261 is located on the inner diameter of the stepped ring plate 26. A one-way sealing assembly 262 abuts against the support ring strip 261. The one-way sealing assembly 262 includes a support ring gasket 2621 and an abutting ring gasket 2622. The support ring gasket 2621 has an L-shaped cross-section. The abutting ring gasket 2622 is tilted and arranged on the support ring gasket 2621. One end of the abutting ring gasket 2622 abuts against the abutting ring plate 25, and the other end is fixedly connected to the support ring gasket 2621. An angle is formed between the abutting ring gasket 2622 and the plate surface of the abutting ring plate 25.

[0047] Reference Figure 3 and Figure 4 When the operator turns off the air pump, stopping it, there is no pressure difference between the positive pressure cavity 6 and the outside. Water mist from the outside of the connecting shell 4 can pass through the positive pressure cavity 6 and the buffer cavity 7 and enter the interior of the housing 2. The inclined arrangement of the abutment ring gasket 2622 and its use of an elastic material effectively prevent water mist from entering the interior of the housing 2. When the air pump is operating, gas within the housing 2 accumulates to a certain level, and under the action of pressure, it pushes against the abutment ring gasket 2622, allowing the gas to pass through.

[0048] The implementation principle of a turntable equipped with an angle limiting device in Example 1 of the present application is as follows:

[0049] When the operator activates the turntable, the stator 23 drives the rotor 24 to rotate. This in turn causes the abutment ring plate 25, the turntable 3, the stepped ring plate 26, and the spindle 27 to rotate accordingly. The rotating block 54 also rotates with the turntable 3. The first encoder 215 records the angle of rotation of the turntable 3, while the second encoder 271 records the angle of rotation of the spindle 27. Finally, the central control platform calculates the most accurate angle. When the grinding wheel continues to rotate due to inertia, the proximity sensor 53 first senses this. Then, under the influence of the turntable 3, the rotating block 54 strikes the rubber block 52, causing the turntable 3 to stop.

[0050] When the turntable is operating continuously, a large amount of heat is likely to be generated inside the machine body 2. At this time, the operator connects an external air pump through the air nozzle 2141 to cool the interior of the machine body 2. The air then pushes the one-way seal assembly 262, allowing the air to enter the buffer cavity 7. The air then passes through the gap between the turntable 3 and the stepped ring table and enters the positive pressure cavity 6. This creates a pressure difference between the pressure inside the positive pressure cavity 6 and the pressure outside the connecting shell 4, preventing external water mist from entering, thereby protecting the delicate components inside the machine body 2.

[0051] The housing 2 is provided with three mounting slots 211 on opposite sides thereof, and the mounting slots 211 are arranged in an L-shape, allowing the housing 2 to be installed in both a vertical and horizontal position. When the housing 2 is installed horizontally, the second encoder 271 is located in the second pre-placed cavity 213. When the housing 2 needs to be installed vertically, the switch between horizontal and vertical positions can be achieved by simply removing the baffle 22 and placing the second encoder 271 in the first pre-placed cavity 212, thereby improving work efficiency.

[0052] Example 2

[0053] Reference Figure 6 and Figure 7 The angle limiting assembly 5 includes a limit block 55, a connecting block 56, an electromagnet 57, a spring 58, and a limit rod 59. Two limit blocks 55 are bolted to the stepped ring plate 26. Depending on the desired limiting angle, the limit blocks 55 can be adjusted by adjusting the position of their bolt holes relative to the bolt holes on the stepped ring plate 26. The angle between the two limit blocks 55 determines the desired limiting angle. The end of the limit block 55 facing away from the rotating table 3 is fixedly connected to the connecting block 56, which has an L-shaped cross-section. The electromagnet 57 is fixedly connected to the connecting block 56 and is located on the side closest to the limit block 55. A limit rod 59 is slidably connected to the limit block 55. A spring 58 is sleeved on the limit rod 59, with one end fixedly connected to the connecting block 56 and the other end fixedly connected to the limit rod 59. A limit hole 31 is defined in the rotating table 3, which engages with the plug-in rod.

[0054] Reference Figure 6and Figure 7 When the grinding wheel rotates, the turntable 3 also rotates. At this time, the electromagnet 57 of one angle limiting assembly 5 is energized, causing the limiting rod 59 to be attracted to the electromagnet 57, thereby releasing the limit on the turntable 3 and compressing the spring 58. When the grinding wheel rotates to the desired limited angle, the electromagnet 57 of the other angle limiting assembly 5 is not energized before this. Therefore, the spring 58 causes the limiting rod 59 to abut against the turntable 3. When the turntable 3 rotates to the desired limited angle, the limiting rod 59, under the action of the spring 58, is inserted into the limiting hole 31, thereby achieving precise positioning of the turntable 3.

[0055] The implementation principle of a turntable equipped with an angle limiting device in Example 2 of the present application is as follows:

[0056] When the grinding wheel rotates, the turntable 3 also rotates. At this point, the operator, through the master control platform, energizes the electromagnet 57 of one of the angle limiting assemblies 5. This causes the limiting rod 59 to be attracted to the electromagnet 57, compressing the spring 58 and thereby limiting the contact of the turntable 3. When the turntable 3 rotates to the desired angle, the electromagnet of the other angle limiting assembly 5 is de-energized, and the spring 58 pushes the limiting rod 59, causing it to abut against the turntable 3. When the angle is reached, the limiting rod 59 inserts into the limiting hole 31, thereby achieving the desired angle limit. The two limiting blocks 55 are detachably connected to the stepped ring plate 26 via bolts, thereby improving work efficiency. The angle between the two limiting blocks 55 is the desired angle limit.

[0057] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A turntable equipped with an angle limiting device, characterized in that: The invention comprises a mounting platform (1), wherein the mounting platform (1) is detachably connected to an organic body (2), wherein a stator (23) and a rotor (24) are detachably connected in the organic body (2), and the stator (23) and the rotor (24) are coaxially arranged, and an abutting ring plate (25) is detachably connected to the rotor (24), and an end of the abutting ring plate (25) away from the rotor (24) is detachably connected to a rotating platform (3), and a stepped ring plate (26) is provided between the rotating platform (3) and the abutting ring plate (25), and the stepped ring plate (26) is detachably connected to the organic body (2). The machine body (2) is provided with a main shaft (27), and the main shaft (27) is detachably connected to the rotating table (3). A second encoder (271) is provided in the machine body (2), and the second encoder (271) is sleeved on the main shaft (27) and rotated in conjunction with the main shaft (27).

2. A turntable equipped with an angle limiting device according to claim 1, characterized in that: The angle limiting assembly (5) comprises a positioning block (51), two rubber blocks (52), two proximity sensors (53) and a rotating block (54); the rotating block (54) is detachably connected to the rotating platform (3); the positioning block (51) has a T-shaped cross section and is detachably connected to the stepped ring plate (26); the proximity sensors (53) and the rubber blocks (52) are fixedly connected to both sides of the positioning block (51).

3. A turntable equipped with an angle limiting device according to claim 1, characterized in that: The angle limiting assembly (5) comprises a limiting block (55), a connecting block (56), an electromagnet (57), a spring (58) and a limiting rod (59); the limiting block (55) is detachably connected to the stepped ring plate (26); the connecting block (56) is fixedly connected to the limiting block (55) and is away from the side of the rotating table (3); the connecting block (56) has an L-shaped cross section; the limiting rod (59) is rotatably connected to the connecting block (56); the electromagnet (57) is located between the limiting block (55) and the connecting block (56); the spring (58) is sleeved on the limiting rod (59); one end of the spring (58) is fixedly connected to the connecting block (56) and the other end is fixedly connected to the limiting rod (59); a limiting hole (31) is provided on the outer surface of the rotating table (3); the limiting hole (31) is plugged into and matched with the limiting rod (59).

4. A turntable equipped with an angle limiting device according to claim 1, characterized in that: The machine body (2) comprises a housing (21) and a baffle (22), wherein the baffle (22) is detachably connected to the housing (21), and three mounting slots (211) are respectively provided on two mutually facing side surfaces of the housing (21), and the three mounting slots (211) are distributed in an L-shape. A first preset cavity (212) and a second preset cavity (213) are provided in the machine body (2), and when the machine body (2) is installed vertically, the second encoder (271) is located in the first preset cavity (212), and when the machine body (2) is installed horizontally, the second encoder (271) is located in the second preset cavity (213).

5. A turntable equipped with an angle limiting device according to claim 1, characterized in that: A vent is provided on the machine body, and an air nozzle is fixedly connected to the vent of the machine body.

6. A turntable equipped with an angle limiting device according to claim 1, characterized in that: A connecting shell (4) is provided on the rotating table (3), and the cross-section of the connecting shell (4) is U-shaped. One end of the connecting shell (4) is detachably connected to the rotating table (3), and a certain gap is left between the other end and the stepped ring plate (26). A positive pressure cavity (6) is formed between the rotating table (3), the stepped ring plate (26) and the connecting shell (4). A buffer cavity (7) is formed between the rotating table (3) and the stepped ring plate (26). The buffer cavity (7) and the positive pressure cavity (6) are communicated through the gap left between the stepped ring plate (26) and the rotating table (3).

7. A turntable equipped with an angle limiting device according to claim 6, characterized in that: Sealing rings (41) are provided between the stepped ring plate (26) and the machine body (2) and between the connecting shell (4) and the rotating platform (3).

8. The turntable equipped with an angle limiting device according to claim 1, characterized in that: A support ring strip (261) is fixedly connected to one side of the step ring plate (26) close to the abutting ring plate (25); a one-way sealing assembly (262) is provided between the abutting ring plate (25) and the step ring plate (26); the one-way sealing assembly (262) comprises a support ring pad (2621) and an abutting ring pad (2622); the support ring pad (2621) abuts against the step ring plate (26) and has an L-shaped cross section; the abutting ring pad (2622) is tilted and forms an angle with the plate surface of the abutting ring plate (25); one end of the abutting ring pad (2622) is fixedly connected to the support ring pad (2621) and the other end abuts against the abutting ring plate (25).

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