Pneumatic index plate stable in positioning

Abstract

The utility model relates to the technical field of pneumatic index plates, in particular to a pneumatic index plate stable in positioning, which comprises a pneumatic index plate base, a bearing is embedded and fixed at the upper end of the pneumatic index plate base, a shaft rod is in interference fit with the inner ring wall of the bearing, a main body index plate is fixedly mounted at the upper end of the shaft rod, and the main body index plate is fixedly mounted at the lower end of the shaft rod. A pneumatic air cylinder is installed on one side of the pneumatic index plate base in an embedded mode, an adjusting air valve embedded into the pneumatic index plate base is arranged on one side of the air cylinder, and two supporting frames which are symmetrically distributed are arranged at the upper end of the main body index plate. According to the utility model, the cylinder drives the main body index plate to rotate, and the linkage design of the electric push rod and the positioning pin is combined, so that multi-point positioning can be realized, the position of the index plate can be quickly locked after the index plate rotates, and the structure of the shaft lever supported by the bearing and the extension plate further enhances the rotation stability, effectively reduces vibration and offset, and improves the processing quality.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic indexing plate technology, and in particular to a pneumatic indexing plate with stable positioning. Background Technology

[0002] A pneumatic indexing plate is a rotary positioning device used in automated production lines and machine tools. It uses compressed air as a power source and drives the indexing plate to perform precise rotary positioning through a cylinder or pneumatic motor.

[0003] The main advantages of pneumatic indexing tables are their high precision and stability, enabling rapid and accurate rotation. Furthermore, pneumatic indexing tables offer advantages such as simple structure, ease of operation, and low maintenance costs, thus finding widespread application in automated production lines and machine tools.

[0004] Currently, pneumatic indexing plates primarily rely on slots and holes on the plate surface combined with screws for fixing objects. The positioning of these slots depends on mechanical cooperation, which can lead to manufacturing errors and wear, resulting in decreased positioning accuracy. Furthermore, the position and number of slots on the indexing plate are fixed and cannot be flexibly adjusted to meet different positioning needs. This significantly limits the types of objects that can be processed, and some objects cannot be positioned using screws. Additionally, if processing is performed synchronously after pneumatic rotation, vibrations during the pneumatic process can easily cause positional shifts in the workpiece. Therefore, after pneumatic adjustment, mechanical positioning is necessary to further ensure the stability of the workpiece's position during processing.

[0005] Therefore, we provide a pneumatic indexing plate with stable positioning. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned technical problems by providing a pneumatic indexing plate with stable positioning, which can further improve the clamping and adaptation stability of workpieces during processing. At the same time, after angle adjustment, it can enhance the stability of the workpiece position during processing.

[0007] In view of this, the present invention provides a pneumatic indexing plate with stable positioning, including a pneumatic indexing plate base, a bearing is embedded and fixed at the upper end of the pneumatic indexing plate base, a shaft is interference-fitted on the inner ring wall of the bearing, a main indexing plate is fixedly installed at the upper end of the shaft, a pneumatic cylinder is embedded and installed on one side of the pneumatic indexing plate base, and an adjusting air valve is provided on one side of the cylinder and embedded in the pneumatic indexing plate base;

[0008] The upper end of the main indexing plate is provided with two symmetrically distributed support frames. The support frames are L-shaped and their horizontal bottoms are fixedly installed to the main indexing plate by screws. The upper ends of the support frames distributed on both sides are fixedly assembled with the same auxiliary indexing plate.

[0009] The surface of the main indexing plate is provided with a plurality of mounting grooves, which are equidistantly distributed in a ring along the upper end of the main indexing plate. A plurality of mounting holes are distributed in the outer area of ​​the mounting grooves, which penetrate the main indexing plate. The mounting holes are equidistantly distributed in a ring along the surface of the main indexing plate.

[0010] In detail, several extension plates are fixedly distributed on the outer ring wall of the main indexing plate. The extension plates are equidistantly distributed in a ring along the surface of the main indexing plate, and a positioning seat is fixedly inserted through the interior of the extension plate.

[0011] In detail, an electric push rod is fixedly installed at the other end of the pneumatic indexing plate base away from the cylinder via a bracket. The electric push rod has a telescopic rod for driving inside. The end of the telescopic rod is fixedly installed with a positioning pin by screws. The upper end of the positioning pin slides and engages with the inside of the positioning seat.

[0012] In detail, the auxiliary indexing plate has an inner cavity, and bushings are fixed through both sides of the inner wall of the inner cavity. The same drive shaft is rotatably installed between the bushings distributed on both sides.

[0013] In detail, a motor is provided at one end of the drive shaft, and the outer wall of the motor is fixed to the outer ring wall of the auxiliary indexing plate by a bracket. The motor is provided with a drive shaft inside, and the end of the drive shaft is fixed to one end of the drive shaft by a coupling.

[0014] In detail, the surface of the drive shaft is provided with an external thread, which has two sections and the external threads are distributed in opposite directions on both sides. A threaded sleeve is installed on the surface thread of the external thread.

[0015] In detail, a limiting rod is fixedly installed at the upper end of the threaded sleeve, and a limiting hole is opened at the upper end of the inner cavity. The limiting rod and the limiting hole are slidably fitted together. The upper end of the limiting rod extends upward through the limiting hole, and a clamping plate is fixedly installed on one side of the limiting rod by screws.

[0016] Compared with the prior art, this utility model provides a pneumatic indexing plate with stable positioning, which has the following advantages:

[0017] 1. This utility model uses a cylinder to drive the main indexing plate to rotate. Combined with the linkage design of electric push rod and positioning pin, it can achieve multi-point positioning, ensuring that the indexing plate quickly locks in position after rotation. The bearing-supported shaft and extension plate structure further enhance rotational stability, effectively reduce vibration and offset, and improve processing quality.

[0018] 2. This utility model, by equipping the auxiliary indexing plate with a bidirectional threaded clamping mechanism, controls the synchronous opposite movement of the two clamping plates through a motor, which can quickly clamp workpieces of different sizes. The mounting groove and mounting hole on the main indexing plate provide a flexible way to fix the components, while the auxiliary indexing plate serves as a backup positioning means when the main plate cannot be fixed, thus expanding the applicability of the indexing plate.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a pneumatic indexing plate with stable positioning proposed in this utility model;

[0021] Figure 2 This is a front structural diagram of a pneumatic indexing plate with stable positioning proposed in this utility model.

[0022] Figure 3 This is a bottom view of a pneumatic indexing plate with stable positioning proposed in this utility model.

[0023] Figure 4 This is a top view of the main indexing plate structure of a pneumatic indexing plate with stable positioning proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the inner cavity of the auxiliary indexing plate of a pneumatic indexing plate with stable positioning proposed in this utility model.

[0025] In the diagram: 1. Pneumatic indexing plate base; 11. Bearing; 12. Shaft; 13. Main indexing plate; 14. Cylinder; 15. Adjusting valve; 16. Support frame; 17. Auxiliary indexing plate; 18. Screw; 19. Mounting slot; 110. Mounting hole; 2. Extension plate; 21. Positioning seat; 22. Electric push rod; 23. Positioning pin; 3. Inner cavity; 31. Bushing; 32. Drive shaft; 33. Motor; 34. External thread; 35. Threaded sleeve; 36. Limiting rod; 37. Clamping plate; 38. Limiting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 utility model.

[0028] Example 1

[0029] See Figures 1-5 A pneumatic indexing plate with stable positioning includes a pneumatic indexing plate base 1, a bearing 11 fixedly embedded in the upper end of the pneumatic indexing plate base 1, a shaft 12 interference-fitted on the inner ring wall of the bearing 11, a main indexing plate 13 fixedly mounted on the upper end of the shaft 12, a pneumatic cylinder 14 embedded in one side of the pneumatic indexing plate base 1, and an adjusting valve 15 embedded in the pneumatic indexing plate base 1 on one side of the cylinder 14. The bearing 11 is a transition component that allows the shaft 12 to pass through the pneumatic indexing plate base 1 and ensures the stable rotation of the shaft 12. The cylinder 14 is a power source that drives the main indexing plate 13 to rotate through reciprocating motion. The adjusting valve 15 is a component of the pneumatic control part of the pneumatic indexing plate. The pneumatic control part also includes a pressure regulator and a position sensor, both of which are installed inside the pneumatic indexing plate base 1.

[0030] The upper end of the main indexing plate 13 is provided with two symmetrically distributed support frames 16. The support frame 16 has an L-shaped structure, and its horizontal bottom is fixedly installed to the main indexing plate 13 by screws 18. The upper end of the support frames 16 distributed on both sides is fixedly equipped with the same auxiliary indexing plate 17. The auxiliary indexing plate 17 can be used for auxiliary positioning when the main indexing plate 13 cannot fix the parts with screws. The two support frames 16 at the bottom can ensure that the auxiliary indexing plate 17 is stably installed based on the main indexing plate 13.

[0031] The surface of the main indexing plate 13 is provided with a number of mounting grooves 19. The mounting grooves 19 are equidistantly distributed in a ring along the upper end of the main indexing plate 13. A number of mounting holes 110 are distributed in the outer area of ​​the mounting grooves 19. The mounting holes 110 penetrate the main indexing plate 13. The mounting holes 110 are equidistantly distributed in a ring along the surface of the main indexing plate 13. The mounting grooves 19 and mounting holes 110 can be used to fix the components with screws when using the pneumatic indexing plate.

[0032] It should be further explained that a number of extension plates 2 are fixedly distributed on the outer ring wall of the main indexing plate 13. The extension plates 2 are equidistantly distributed in a ring along the surface of the main indexing plate 13. A positioning seat 21 is fixedly inserted through the inside of the extension plate 2. At least twelve sets of positioning seats 21 are provided. By setting multiple points, it can be ensured that the main indexing plate 13 can be positioned at different positions after rotation.

[0033] It should be further explained that an electric push rod 22 is fixedly installed at the other end of the pneumatic indexing plate base 1 away from the cylinder 14 via a bracket. The electric push rod 22 has a telescopic rod for driving inside. The end of the telescopic rod is fixedly installed with a positioning pin 23 by screws. The upper end of the positioning pin 23 slides and inserts into the interior of the positioning seat 21. By the telescopic movement of the electric push rod 22, the positioning pin 23 at the end can be inserted and connected with the positioning seat 21 currently located directly above it, so as to realize auxiliary positioning during part processing and ensure further stability of part processing.

[0034] It should be further explained that the auxiliary indexing plate 17 has an inner cavity 3 inside, and bushings 31 are fixed through both sides of the inner wall of the inner cavity 3. The same drive shaft 32 is rotatably installed between the bushings 31 distributed on both sides. The drive shaft 32 can rotate stably based on the bushings 31, thereby enabling the external thread 34 to be linked.

[0035] It should be further noted that a motor 33 is provided at one end of the drive shaft 32. The outer wall of the motor 33 is fixed to the outer ring wall of the auxiliary indexing plate 17 by a bracket. The motor 33 has a drive shaft inside. The end of the drive shaft is fixed to one end of the drive shaft 32 by a coupling. The motor 33 is connected to a forward and reverse switch by wires. The forward and reverse switch is model HY2-8 and can operate the motor 33 in both forward and reverse directions.

[0036] It should be further explained that the surface of the drive shaft 32 is provided with an external thread 34. The external thread 34 is provided with two sections, and the external threads 34 distributed on both sides are in opposite directions. The surface of the external thread 34 is threaded with a threaded sleeve 35. Through the opposing external threads 34 distributed on both sides, it can be ensured that the two threaded sleeves 35 can move closer or further away from each other at the same time when driving, so that the clamping plate 37 can be stably clamped and positioned by the workpiece.

[0037] It should be further explained that a limiting rod 36 is fixedly installed on the upper end of the threaded sleeve 35, and a limiting hole 38 is opened at the upper end of the inner cavity 3. The limiting rod 36 and the limiting hole 38 are slidably fitted together. The upper end of the limiting rod 36 extends upward through the limiting hole 38, and a clamping plate 37 is fixedly installed on one side of the limiting rod 36 by screws. When it is necessary to clamp the workpiece placed on the auxiliary indexing plate 17, the motor 33 is started by the forward and reverse switch. The motor 33 can make the drive shaft 32 rotate through its rotating shaft, thereby realizing the linkage of the external thread 34 and allowing the threaded sleeve 35 to move. By setting the two external threads 34 in opposite directions and the limiting rod 36 sliding in the limiting hole 38, the two clamping plates 37 can move closer or further away from each other at the same time, thereby realizing the clamping and fixing of the workpiece.

[0038] Working principle: The core power of the pneumatic indexing plate in this solution comes from the cylinder 14. The reciprocating motion of the cylinder drives the main indexing plate 13 to rotate. The positioning stability of the indexing plate is ensured by the electric push rod 22 and the positioning pin 23. The telescopic rod of the electric push rod 22 inserts the positioning pin 23 into the corresponding positioning seat 21 according to the indexing angle requirement to achieve mechanical locking. This dual positioning method of pneumatic-mechanical not only ensures the indexing efficiency and rapid pneumatic response, but also ensures the rigid fixation and mechanical pin locking during processing.

[0039] The auxiliary indexing plate 17 is rigidly connected to the main indexing plate 13 via the support frame 16. The bidirectional threaded drive mechanism in its inner cavity 3 is used to clamp the workpiece. The motor 33 drives the drive shaft 32 with the reverse external thread 34 to rotate, so that the two threaded sleeves 35 move synchronously towards or away from each other, driving the limit rod 36 and the clamping plate 37 to clamp or release the workpiece. The limit hole 38 constrains the movement trajectory of the limit rod to avoid deflection. This design allows the auxiliary indexing plate to provide additional clamping force when the main indexing plate cannot directly fix irregular workpieces, and is especially suitable for the processing of asymmetrical or flexible parts.

[0040] The main indexing plate 13 supports the rapid installation of multi-station fixtures or workpieces through the ring-shaped mounting slots 19 and mounting holes 110. The mounting slots 19 can be used to embed pins or special fixture bases, while the mounting holes 110 can be used to fix additional devices with bolts to achieve modular expansion.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positionally stable air bearing dial comprising an air bearing dial base (1) characterised in that: A bearing (11) is embedded and fixed at the upper end of the pneumatic indexing plate base (1). A shaft (12) is interference-fitted on the inner ring wall of the bearing (11). A main indexing plate (13) is fixedly installed at the upper end of the shaft (12). A pneumatic cylinder (14) is embedded and installed on one side of the pneumatic indexing plate base (1). An adjusting valve (15) is embedded in the pneumatic indexing plate base (1) on one side of the cylinder (14). The upper end of the main indexing plate (13) is provided with two symmetrically distributed support frames (16). The support frame (16) has an L-shaped structure. Its horizontal bottom is fixedly installed with the main indexing plate (13) by screws (18). The upper ends of the support frames (16) distributed on both sides are fixedly assembled with the same auxiliary indexing plate (17). The surface of the main indexing plate (13) is provided with a plurality of mounting grooves (19), which are equidistantly distributed in a ring along the upper end of the main indexing plate (13). A plurality of mounting holes (110) are distributed in the outer area of ​​the mounting grooves (19), which penetrate the main indexing plate (13). The plurality of mounting holes (110) are equidistantly distributed in a ring along the surface of the main indexing plate (13).

2. A positionally stable air bearing dial according to claim 1 wherein: Several extension plates (2) are fixedly distributed on the outer ring wall of the main indexing plate (13). The extension plates (2) are equidistantly distributed in a ring along the surface of the main indexing plate (13). A positioning seat (21) is fixedly inserted through the interior of the extension plate (2).

3. A positionally stable air bearing dial according to claim 2, wherein: An electric push rod (22) is fixedly installed at the other end of the pneumatic indexing plate base (1) away from the cylinder (14) by a bracket. The electric push rod (22) has a telescopic rod for driving inside. The end of the telescopic rod is fixedly installed with a positioning pin (23) by screws. The upper end of the positioning pin (23) slides and inserts into the interior of the positioning seat (21).

4. A positionally stable air bearing dial according to claim 3, wherein: The auxiliary indexing plate (17) has an inner cavity (3) inside. Both sides of the inner wall of the inner cavity (3) are fixed with bushings (31). The same drive shaft (32) is rotatably installed between the bushings (31) distributed on both sides.

5. A positionally stable air bearing dial according to claim 4 wherein: One end of the drive shaft (32) is provided with a motor (33). The outer wall of the motor (33) is fixed to the outer ring wall of the auxiliary indexing plate (17) by a bracket. The motor (33) is provided with a rotating shaft for driving. The end of the rotating shaft is fixed to one end of the drive shaft (32) by a coupling.

6. A positionally stable air bearing dial according to claim 5 wherein: The drive shaft (32) has an external thread (34) on its surface. The external thread (34) has two sections, and the external threads (34) distributed on both sides are in opposite directions. A threaded sleeve (35) is installed on the surface of the external thread (34).

7. A pneumatic indexing plate with stable positioning according to claim 6, characterized in that: A limiting rod (36) is fixedly installed at the upper end of the threaded sleeve (35), and a limiting hole (38) is opened at the upper end of the inner cavity (3). The limiting rod (36) and the limiting hole (38) are slidably fitted together. The upper end of the limiting rod (36) extends upward through the limiting hole (38), and a clamping plate (37) is fixedly installed on one side of the limiting rod (36) by screws.

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