Multi-angle pneumatic indexing turntable center gas rotating shaft with self-locking function

Abstract

The utility model relates to the field of automatic mechanical equipment discloses a multi -angle pneumatic indexing turntable center air rotating shaft with self -locking function, including four -axis bridge board, the inner wall rotation of four -axis bridge board is connected with the turntable body, the top fixed connection of four -axis bridge board has the oblique insertion positioning mechanism, the top fixed connection of four -axis bridge board has spare positioning mechanism, the oblique insertion positioning mechanism includes base, the bottom fixed connection of base is in the top of four -axis bridge board, the inner wall fixed connection of base has the pneumatic cylinder, the drive end fixed connection of pneumatic cylinder has the push -board. In the utility model, the turntable body of four -axis bridge board inner wall adopts die steel precision machining, realizes stable support through the center bearing, after driving cylinder drives the turntable body to complete rough indexing positioning, the pneumatic cylinder in the base starts immediately, and the push -board slides along the inner wall of base.

Description

Technical Field

[0001] This utility model relates to the field of automated mechanical equipment, and in particular to a central pneumatic rotary shaft for a multi-angle pneumatic indexing turntable with a self-locking function. Background Technology

[0002] With the continuous advancement of the Industrial Revolution, the machinery manufacturing industry has ushered in a wave of large-scale production. The requirements for precision and efficiency in workpiece processing are becoming increasingly stringent. Traditional manual indexing or simple mechanical positioning methods are not only difficult to meet the multi-angle processing needs of complex parts (such as gears, cams, and polyhedral workpieces), but also severely restrict production quality and speed due to large human operation errors and low repeatability. To solve this problem, mechanical devices that can achieve automatic or semi-automatic precise angle indexing and positioning, such as the multi-angle pneumatic indexing turntable center pneumatic rotary shaft, have emerged. The multi-angle pneumatic indexing turntable's central pneumatic rotary shaft, through mechanical transmission structures such as gears, ratchet wheels, or worm gears, transforms continuous motion into intermittent indexing motion. It can rotate the workpiece step by step at preset angles, enabling the machine tool to continuously complete drilling, milling, grinding, and other processes at different workstations. This not only significantly reduces the number of workpiece clamping operations but also controls positioning errors to the second level, significantly improving processing accuracy and efficiency. It has become a key piece of equipment for promoting the transformation of machining from extensive production to precision and automation, providing reliable technical support for the batch processing of complex parts. At present, the central pneumatic rotary shaft of multi-angle pneumatic indexing turntables has undoubtedly played a positive role in promoting the development of the industry. However, the indexing mechanisms on the market still have obvious shortcomings, such as low positioning accuracy and insufficient output torque, and lack of reliable self-locking function. This situation is particularly prominent under high load or large inertia conditions. The workpiece is prone to angular deviation during processing, and the turntable is often accompanied by instability during rotation. This not only directly affects the operational stability of the equipment and leads to a decrease in processing accuracy, but also causes safety hazards due to sudden displacement. This restricts its application in high-end scenarios such as precision manufacturing and heavy processing, and has become a bottleneck for the industry to develop towards higher precision and greater safety and reliability. To solve these problems, a central pneumatic rotary shaft of multi-angle pneumatic indexing turntable with self-locking function is proposed. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a multi-angle pneumatic indexing turntable center pneumatic rotary shaft with self-locking function, aiming to improve the problem of the lack of reliable self-locking function in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A multi-angle pneumatic indexing turntable center pneumatic rotary shaft with self-locking function includes a four-axis bridge plate, a turntable body is rotatably connected to the inner wall of the four-axis bridge plate, an inclined positioning mechanism is fixedly connected to the top of the four-axis bridge plate, and a spare positioning mechanism is fixedly connected to the top of the four-axis bridge plate. The oblique positioning mechanism includes a base, the bottom of which is fixedly connected to the top of the four-axis bridge plate. A cylinder is fixedly connected to the inner wall of the base. A push plate is fixedly connected to the drive end of the cylinder. Two connecting rods are fixedly connected to the other side of the push plate. An oblique pin is fixedly connected to the other side of the two connecting rods. Multiple positioning holes are opened on the inner wall of the turntable body. The spare positioning mechanism includes a housing, the bottom of which is fixedly connected to the top of the four-axis bridge plate. A fixing component is fixedly connected to the top of the housing. As a further description of the above technical solution: The inner wall of the outer shell is slidably connected to a sliding column, the outer wall of the sliding column is fixedly connected to a protruding plate, one side of the sliding column is fixedly connected to a ball, the other side of the sliding column is fixedly connected to a fixing block, the outer wall of the sliding column is fitted with a spring, and the inner wall of the turntable body is provided with multiple slots. As a further description of the above technical solution: The turntable body is equipped with an integrated air circuit shaft inside, the inner wall of the four-axis bridge plate is fixedly connected to a drive cylinder, and the inner wall of the turntable body is fixedly connected to a zero-point positioning device. As a further description of the above technical solution: The fixing assembly includes a fixing plate, the bottom of which is fixedly connected to the top of the housing, a stud threadedly connected to the inner wall of the fixing plate, and a rotating plate fixedly connected to the top of the stud. As a further description of the above technical solution: The outer wall of the stud is threadedly connected to the inner wall of the fixing block, and the outer wall of the stud is threadedly connected to the inner wall of the four-axis bridge plate. As a further description of the above technical solution: The outer wall of the push plate is slidably connected to the inner wall of the base, the outer wall of the inclined pin is slidably connected to the inner wall of the positioning hole, and the outer wall of the inclined pin is slidably connected to the inner wall of the base. As a further description of the above technical solution: The convex plate is slidably connected to the inner wall of the outer shell, the retaining ball is slidably connected to the inner wall of the outer shell, and the outer wall of the retaining ball and the inner wall of the retaining groove are engaged. As a further description of the above technical solution: One side of the spring is fixedly connected to one side of the convex plate, and the other side of the spring is fixedly connected to the inner wall of the outer casing.

[0005] This utility model has the following beneficial effects: 1. In this utility model, the turntable body on the inner wall of the four-axis bridge plate is precision machined from mold steel. It is stably supported by a central bearing. After the drive cylinder drives the turntable body to complete the coarse indexing positioning, the cylinder inside the base is activated, pushing the push plate to slide along the inner wall of the base. Then, the inclined pin is driven to move through the connecting rod. The inclined pin is accurately inserted into the inner wall of the preset positioning hole. Automatic suction is achieved by utilizing the inclined surface contact characteristics, while forming a high-strength positioning effect and completely completing the self-locking action. In addition, the integrated pneumatic shaft can be precisely matched with the zero-point positioning device, which can quickly realize the automatic clamping and loosening of the workpiece on the turntable body. The whole process does not require manual intervention, effectively meeting the needs of automated processing scenarios for efficient, accurate and stable operation.

[0006] 2. In this utility model, when the equipment is subjected to a large external force, in order to extend its service life, the rotating plate at the top of the stud can be rotated to drive the stud to rotate on the inner wall of the fixed plate, thereby releasing the restriction of the four-axis bridge plate on the fixed block. At this time, the spring in the compressed state releases its elastic potential energy, pushing the convex plate to drive the sliding column, so that the locking ball fits into the slot on the inner wall of the turntable body. When the turntable body rotates, with the help of the shape characteristics of the locking ball, it can slide along its surface and also cooperate with the inclined pin to lock the turntable body, effectively sharing the external force on the inclined pin. When this structure is not needed, simply pull the fixed block to let the stud re-fit the four-axis bridge plate to lock the fixed block, and the structure can be stopped. Through this adjustable auxiliary support and load-sharing design, the overall service life of the equipment is significantly extended. Attached Figure Description

[0007] Figure 1 A three-dimensional schematic diagram of the central air rotation shaft of a multi-angle pneumatic indexing turntable with self-locking function proposed in this utility model; Figure 2 This is a schematic diagram of the drive cylinder for the central air rotation shaft of a multi-angle pneumatic indexing turntable with self-locking function, as proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0008] Legend: 1. Four-axis bridge plate; 2. Drive cylinder; 3. Turntable body; 4. Integrated air circuit shaft; 5. Zero point positioning; 6. Angled insertion positioning mechanism; 61. Base; 62. Cylinder; 63. Push plate; 64. Connecting rod; 65. Angled pin; 66. Positioning hole; 7. Spare positioning mechanism; 71. Housing; 72. Sliding column; 73. Ball retainer; 74. Protruding plate; 75. Fixing block; 76. Spring; 77. Fixing assembly; 771. Fixing plate; 772. Stud; 773. Rotating plate; 78. Slot. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0010] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a multi-angle pneumatic indexing turntable with self-locking function, including a four-axis bridge plate 1. The four-axis bridge plate 1 is the basic support component of the entire device, ensuring stable connection of each component and ensuring structural stability during equipment operation. The inner wall of the four-axis bridge plate 1 is rotatably connected to the turntable body 3, which can rotate within the four-axis bridge plate 1 to achieve multi-angle indexing positioning, providing different processing positions for workpiece processing and meeting diverse processing needs. The top of the four-axis bridge plate 1 is fixedly connected to a slanted insertion positioning mechanism 6, which can accurately position the turntable body 3 and achieve self-locking, ensuring that the turntable body 3 will not shake during processing and improving processing accuracy. The top of the four-axis bridge plate 1 is fixedly connected to a spare positioning mechanism 7, which assists the slanted insertion positioning mechanism 6 in locking the turntable body 3 when the equipment is subjected to large external forces, sharing the force, extending the service life of the equipment, and enhancing the reliability of the equipment. The inclined insertion positioning mechanism 6 includes a base 61, the bottom of which is fixedly connected to the top of the four-axis bridge plate 1. The base 61 is the basic frame for positioning. A cylinder 62 is fixedly connected to the inner wall of the base 61. The cylinder 62 provides power to the inclined insertion positioning mechanism 6. A push plate 63 is fixedly connected to the drive end of the cylinder 62. The push plate 63 slides in the base 61 under the drive of the cylinder 62. Two connecting rods 64 are fixedly connected to the other side of the push plate 63. An inclined pin 65 is fixedly connected to the other side of the two connecting rods 64. The connecting rods 64 connect the push plate 63 and the inclined pin 65, transmitting the power of the push plate 63 to the inclined pin 65, thereby improving the stability of positioning. Multiple positioning holes 66 are opened on the inner wall of the turntable body 3. The positioning holes 66 cooperate with the inclined pin 65. Different positioning holes 66 correspond to different angles of the turntable body 3, realizing multi-angle positioning and meeting processing requirements. The backup positioning mechanism 7 includes a housing 71, the bottom of which is fixedly connected to the top of the four-axis bridge plate 1. The housing 71 is the basic component for backup positioning. A fixing component 77 is fixedly connected to the top of the housing 71. The fixing component 77 controls the working state of the backup positioning mechanism 7, enabling it to function when needed and stop working when not needed. An integrated pneumatic shaft 4 is provided inside the turntable body 3, providing a pneumatic passage for the turntable body 3. A drive cylinder 2 is fixedly connected to the inner wall of the four-axis bridge plate 1, providing power for the rotation of the turntable body 3 and driving the turntable body 3 to perform coarse indexing positioning. It is the power source for the rotation of the turntable. A zero-point positioning 5 is fixedly connected to the inner wall of the turntable body 3. The zero-point positioning 5 cooperates with the integrated pneumatic shaft 4 to quickly realize the positioning and clamping of the workpiece, shorten the clamping time, and improve the convenience of automated processing.

[0011] Reference Figures 2 to 4 The inner wall of the outer shell 71 is slidably connected to a sliding column 72, and the outer wall of the sliding column 72 is fixedly connected to a protruding plate 74. The protruding plate 74 moves with the sliding column 72. A locking ball 73 is fixedly connected to one side of the sliding column 72, and a fixing block 75 is fixedly connected to the other side of the sliding column 72. A spring 76 is sleeved on the outer wall of the sliding column 72. The spring 76 stores elastic potential energy under the compression of the protruding plate 74. When released, it pushes the sliding column 72 to drive the locking ball 73, providing power for backup positioning. The inner wall of the turntable body 3 is provided with multiple slots 78. The slots 78 cooperate with the locking ball 73. Different slots 78 correspond to different angles of the turntable body 3, so that the locking ball 73 can engage with it when the turntable body 3 rotates to the corresponding angle, assisting in positioning. The locking ball 73 engages with the slot 78 under the push of the sliding column 72, and locks the turntable body 3 with the inclined pin 65, enhancing the positioning effect and distributing external force. The fixing assembly 77 includes a fixing plate 771, the bottom of which is fixedly connected to the top of the housing 71. A stud 772 is threadedly connected to the inner wall of the fixing plate 771. The stud 772 moves within the fixing plate 771 by rotation, locking or unlocking the fixing block 75 and controlling the working state of the backup positioning mechanism 7, making operation convenient. A rotating plate 773 is fixedly connected to the top of the stud 772, allowing the operator to easily rotate the stud 772, saving effort and making the operation of the fixing assembly 77 more convenient. The outer wall of the stud 772 is threadedly connected to the inner wall of the fixing block 75. When the stud 772 is inserted into the fixing block 75, it locks it; when it is pulled out, it unlocks it, realizing control of the sliding column 72. The outer wall of the stud 772 is threadedly connected to the inner wall of the four-axis bridge plate 1, which provides threaded support for the stud 772 to ensure that the stud 772 can stably lock the fixing block 75 and ensure the stability of the backup positioning mechanism 7 when it is not in use. The outer wall of the push plate 63 is slidably connected to the inner wall of the base 61, which provides sliding guidance for the push plate 63 to ensure that the push plate 63 can move smoothly and drive the connecting rod 64 and the inclined pin 65 to move accurately and ensure reliable positioning. The outer wall of the inclined pin 65 is slidably connected to the inner wall of the positioning hole 66. When the inclined pin 65 is inserted into the positioning hole 66, it realizes the positioning and self-locking of the turntable body 3. When it is pulled out, it unlocks the lock and allows the turntable body 3 to continue to rotate. The outer wall of the inclined pin 65 is slidably connected to the inner wall of the base 61. The base 61 provides a sliding guide for the inclined pin 65, ensuring that the inclined pin 65 can be accurately inserted into the positioning hole 66, improving positioning accuracy and ensuring a self-locking effect. The convex plate 74 is slidably connected to the inner wall of the outer shell 71. The outer shell 71 restricts the movement direction of the convex plate 74, ensuring that the convex plate 74 can smoothly drive the sliding column 72 to move, so that the retaining ball 73 can accurately engage with the retaining groove 78. The retaining ball 73 is slidably connected to the inner wall of the outer shell 71. The outer shell 71 provides sliding space and guidance for the retaining ball 73, ensuring that the retaining ball 73 can engage with the sliding column 76. Driven by 2, it smoothly engages with the slot 78, assisting in positioning. The outer wall of the ball 73 engages with the inner wall of the slot 78. This engagement enhances the stability of the turntable body 3, shares the external force on the inclined pin 65, and protects the inclined insertion positioning mechanism 6. One side of the spring 76 is fixedly connected to one side of the convex plate 74, and the other side of the spring 76 is fixedly connected to the inner wall of the outer shell 71. This connection method allows the spring 76 to effectively push the convex plate 74 to drive the sliding column 72 to move, providing continuous force for the engagement of the ball 73 and the slot 78, ensuring the backup positioning effect.

[0012] Working principle: The turntable body 3 on the inner wall of the four-axis bridge plate 1 is made of mold steel and supported by a central bearing. After the drive cylinder 2 drives the turntable body 3 for coarse indexing and positioning, thanks to the action of the cylinder 62 inside the base 61, the cylinder 62 pushes the push plate 63 to slide on the inner wall of the base 61, which in turn drives the connecting rod 64 to push the inclined pin 65 to move, so that the inclined pin 65 is inserted into the inner wall of the preset positioning hole 66. Through the inclined surface contact, automatic suction and high-strength positioning effect are achieved, and self-locking is completed. The air circuit integrated shaft 4 can cooperate with the zero point positioning 5 to conveniently realize automatic clamping and loosening on the turntable body 3, thereby realizing automated processing operation. When the entire equipment is subjected to significant external forces, in order to extend the service life of the entire equipment, the rotating plate 773 located at the top of the stud 772 is rotated, causing the stud 772 to rotate on the inner wall of the fixed plate 771. This releases the restriction of the fixed block 75 on the four-axis bridge plate 1, allowing the elastic potential energy stored in the compressed spring 76 to be released. Consequently, the spring 76 pushes the convex plate 74, which in turn drives the sliding column 72 to push the retaining ball 73 to engage with the groove 78 on the inner wall of the turntable body 3. As the turntable body 3 rotates, thanks to the shape characteristics of the retaining ball 73, it can slide on the surface of the turntable body 3 and lock the turntable body 3 in conjunction with the inclined pin 65. It can also share the external force on the inclined pin 65. When this structure is not needed, simply pull the fixed block 75, causing the stud 772 to engage with the four-axis bridge plate 1 to lock the fixed block 75 again, thus stopping the structure from operating and significantly extending the service life of the entire equipment.

[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-angle pneumatic indexing turntable center pneumatic rotary shaft with self-locking function, comprising a four-axis bridge plate (1), characterized in that: The inner wall of the four-axis bridge plate (1) is rotatably connected to the turntable body (3), the top of the four-axis bridge plate (1) is fixedly connected to the inclined positioning mechanism (6), and the top of the four-axis bridge plate (1) is fixedly connected to the spare positioning mechanism (7). The oblique positioning mechanism (6) includes a base (61), the bottom of which is fixedly connected to the top of the four-axis bridge plate (1). A cylinder (62) is fixedly connected to the inner wall of the base (61). A push plate (63) is fixedly connected to the driving end of the cylinder (62). Two connecting rods (64) are fixedly connected to the other side of the push plate (63). An oblique pin (65) is fixedly connected to the other side of the two connecting rods (64). Multiple positioning holes (66) are opened on the inner wall of the turntable body (3). The spare positioning mechanism (7) includes a housing (71), the bottom of which is fixedly connected to the top of the four-axis bridge plate (1). A fixing component (77) is fixedly connected to the top of the housing (71).

2. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 1, characterized in that: The inner wall of the outer shell (71) is slidably connected to a sliding column (72), the outer wall of the sliding column (72) is fixedly connected to a protruding plate (74), a ball (73) is fixedly connected to one side of the sliding column (72), a fixing block (75) is fixedly connected to the other side of the sliding column (72), a spring (76) is sleeved on the outer wall of the sliding column (72), and multiple slots (78) are opened on the inner wall of the turntable body (3).

3. The center rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 1, characterized in that: The turntable body (3) is equipped with an integrated air circuit shaft (4), the inner wall of the four-axis bridge plate (1) is fixedly connected to a drive cylinder (2), and the inner wall of the turntable body (3) is fixedly connected to a zero-point positioning (5).

4. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 2, characterized in that: The fixing component (77) includes a fixing plate (771), the bottom of which is fixedly connected to the top of the outer shell (71), and a stud (772) is threadedly connected to the inner wall of the fixing plate (771), and a rotating plate (773) is fixedly connected to the top of the stud (772).

5. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 4, characterized in that: The outer wall of the stud (772) is threaded to the inner wall of the fixing block (75), and the outer wall of the stud (772) is threaded to the inner wall of the four-axis bridge plate (1).

6. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 1, characterized in that: The outer wall of the push plate (63) is slidably connected to the inner wall of the base (61), the outer wall of the inclined pin (65) is slidably connected to the inner wall of the positioning hole (66), and the outer wall of the inclined pin (65) is slidably connected to the inner wall of the base (61).

7. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 2, characterized in that: The convex plate (74) is slidably connected to the inner wall of the outer shell (71), the ball (73) is slidably connected to the inner wall of the outer shell (71), and the outer wall of the ball (73) and the inner wall of the slot (78) are engaged.

8. The center pneumatic rotary shaft of a multi-angle pneumatic indexing turntable with self-locking function according to claim 2, characterized in that: One side of the spring (76) is fixedly connected to one side of the protrusion plate (74), and the other side of the spring (76) is fixedly connected to the inner wall of the outer casing (71).

Images