Permanent magnet servo four-axis numerical control rotary table

Abstract

The utility model relates to a permanent magnet servo four-axis numerical control rotary table, which belongs to the technical field of four-axis numerical control rotary tables and comprises a four-axis numerical control rotary table body, two clamps are arranged on the surface of the four-axis numerical control rotary table body, buffer mechanisms are arranged on the clamps, and each buffer mechanism comprises a liquid storage cylinder fixedly mounted on the surface of the corresponding clamp. And a first piston plate is mounted in the liquid storage cylinder in a sliding manner. According to the permanent magnet servo four-axis numerical control rotary table, the air bag and the liquid storage cylinder are arranged on the clamp, the liquid storage cylinder is filled with hydraulic oil, and the liquid containing cylinder is arranged outside the liquid storage cylinder, so that when the rotary table is used, buffering between an existing clamp and a workpiece during clamping can be achieved through contraction of the air bag and transfer of the hydraulic oil in the liquid storage cylinder; the fixture can be prevented from being damaged on the surface of a workpiece when being rapidly driven, and the problem that in the prior art, a numerical control rotary table fixture is not provided with a buffer structure and easily damages the workpiece in the using process is solved.

Description

Technical Field

[0001] This utility model relates to the field of four-axis CNC rotary table technology, specifically a permanent magnet servo four-axis CNC rotary table. Background Technology

[0002] A four-axis CNC rotary table is a type of CNC machining equipment, typically used for complex three-dimensional machining and positioning. The working principle of a four-axis CNC rotary table is to control the four axes of the rotary table (usually X, Y, Z, and A axes) to achieve multi-dimensional machining of the workpiece. Each axis can be controlled independently, allowing the rotary table to move and rotate precisely in multiple directions, thus meeting the needs of high-precision machining.

[0003] Publication No. CN211249245U discloses a four-axis CNC rotary table with permanent magnet servo, including a rotary table, a connecting seat, a plug slot, a permanent magnet servo device, a groove, a pneumatic clamp, a buffered protective rod structure, an adjustable buffered protective plate structure, a vacuum device, a first fixed tube, and a vacuum adsorption plate. The design of the second fixed tube, sliding rod, telescopic rod, first buffer spring, first fixed plate, and L-shaped protective rod helps to buffer the pressure of the pneumatic clamp during workpiece fixing, preventing damage to the workpiece. The design of the third fixed tube, square-head bolt, adjusting rod, second fixed plate, second buffer spring, and protective plate helps to prevent the workpiece from falling during processing, increasing the protective function. The design of the third fixed tube, square-head bolt, and adjusting rod facilitates adjustment of the length of the third fixed tube and adjusting rod, making it convenient to adjust the position of the protective plate, thus enhancing the protective function.

[0004] The aforementioned patent addresses the shortcomings of existing CNC rotary table fixtures, which lack a buffer structure and are prone to workpiece damage during use. This application provides another implementation scheme to address the problems raised in the aforementioned patent. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a permanent magnet servo four-axis CNC rotary table, which has the advantage of preventing workpiece damage and solves the problem that existing CNC rotary table fixtures lack a buffer structure and are prone to workpiece damage during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet servo four-axis CNC rotary table, including a four-axis CNC rotary table body, the surface of which is provided with two clamps, and the clamps are provided with a buffer mechanism;

[0007] The buffer mechanism includes a liquid storage cylinder fixedly mounted on the surface of the clamp. A first piston plate is slidably mounted inside the liquid storage cylinder. A plunger extending through to the outer surface of the liquid storage cylinder is fixedly mounted on the surface of the first piston plate. A hollow cylinder is fixedly mounted at the end of the plunger away from the first piston plate. An air bladder is fixedly mounted inside the hollow cylinder. A rubber connecting post is fixedly mounted on the surface of the air bladder. A connecting circular plate is fixedly mounted on the top of the rubber connecting post. A connecting rod extending through to the outer surface of the hollow cylinder is fixedly mounted on the top surface of the connecting circular plate. A clamping plate is fixedly mounted on the top of the connecting rod. A top spring is fixedly mounted inside the air bladder. An air outlet check valve and an air inlet check valve communicating with the air bladder are fixedly mounted on the outer surface of the hollow cylinder. A connecting pipe is fixedly mounted on the side surface of the liquid storage cylinder. A liquid container is fixedly mounted at the end of the connecting pipe away from the liquid storage cylinder. A damping telescopic rod is fixedly mounted inside the liquid container. A second piston plate is fixedly mounted at one end of the damping telescopic rod. Hydraulic oil is added to the liquid storage cylinder.

[0008] Furthermore, there are multiple connecting rods, which are evenly distributed between the connecting circular plate and the clamping plate, and the connecting rods are in sliding contact with the hollow cylinder.

[0009] Furthermore, the opening direction of the outlet one-way valve faces outward of the airbag, and the opening direction of the inlet one-way valve faces inward of the airbag.

[0010] Furthermore, a first retaining ring is fixedly installed inside the liquid storage cylinder. The diameter of the first retaining ring is the same as the diameter of the first piston plate. The connection between the liquid storage cylinder and the connecting pipe is located on the side of the first retaining ring away from the first piston plate.

[0011] Furthermore, a second retaining ring is fixedly installed inside the hollow cylinder, and the diameter of the second retaining ring is the same as the diameter of the connecting circular plate.

[0012] Furthermore, the airbag is flexibly connected to both the exhaust check valve and the intake check valve.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This permanent magnet servo four-axis CNC rotary table features an air bladder and a reservoir on the fixture. The reservoir is filled with hydraulic oil, and a liquid holding tank is located outside the reservoir. During use, the air bladder's contraction and the transfer of hydraulic oil inside the reservoir provide cushioning between the fixture and the workpiece. This prevents damage to the workpiece surface when the fixture is driven rapidly, solving the problem that existing CNC rotary table fixtures lack a cushioning structure and are prone to workpiece damage during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the liquid storage cylinder of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the airbag of this utility model.

[0018] In the diagram: 1. Four-axis CNC rotary table body; 2. Fixture; 3. Liquid storage cylinder; 4. First piston plate; 5. Plunger; 6. Hollow cylinder; 7. Airbag; 8. Rubber connecting column; 9. Connecting circular plate; 10. Connecting rod; 11. Clamping plate; 12. Top spring; 13. Air outlet check valve; 14. Air inlet check valve; 15. Connecting pipe; 16. Liquid storage cylinder; 17. Damping telescopic rod; 18. Second piston plate; 19. First retaining ring; 20. Second retaining ring. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3This embodiment of a permanent magnet servo four-axis CNC rotary table includes a four-axis CNC rotary table body 1. Two clamps 2 are provided on the surface of the four-axis CNC rotary table body 1. A buffer mechanism is provided on each clamp 2. The buffer mechanism includes a liquid storage cylinder 3 fixedly installed on the surface of the clamp 2. A first piston plate 4 is slidably installed inside the liquid storage cylinder 3. A plunger 5, penetrating to the outer surface of the liquid storage cylinder 3, is fixedly installed on the surface of the first piston plate 4. A hollow cylinder 6 is fixedly installed at the end of the plunger 5 away from the first piston plate 4. An airbag 7 is fixedly installed inside the hollow cylinder 6. A rubber connecting post 8 is fixedly installed on the surface of the airbag 7. A connecting circular plate 9 is fixedly installed on the top of the rubber connecting post 8. A connecting rod 10, penetrating to the outer surface of the hollow cylinder 6, is fixedly installed on the top surface of the connecting circular plate 9. The connecting rod 10 is fixedly mounted on the top of... The device is equipped with a clamping plate 11 and multiple connecting rods 10. The multiple connecting rods 10 are evenly distributed between the connecting circular plate 9 and the clamping plate 11. The connecting rods 10 slide in contact with the hollow cylinder 6. A top spring 12 is fixedly installed inside the airbag 7. An air outlet check valve 13 and an air inlet check valve 14 connected to the airbag 7 are fixedly installed on the outer surface of the hollow cylinder 6. The opening direction of the air outlet check valve 13 faces the outside of the airbag 7, and the opening direction of the air inlet check valve 14 faces the inside of the airbag 7. A connecting pipe 15 is fixedly installed on the side surface of the liquid storage cylinder 3. A liquid container 16 is fixedly installed at the end of the connecting pipe 15 away from the liquid storage cylinder 3. A damping telescopic rod 17 is fixedly installed inside the liquid container 16. A second piston plate 18 is fixedly installed at one end of the damping telescopic rod 17. Hydraulic oil is added to the liquid storage cylinder 3.

[0021] A first retaining ring 19 is fixedly installed inside the liquid storage cylinder 3. The diameter of the first retaining ring 19 is the same as the diameter of the first piston plate 4. The connection between the liquid storage cylinder 3 and the connecting pipe 15 is located on the side of the first retaining ring 19 away from the first piston plate 4, so that a certain gap is formed between the first piston plate 4 and the connection between the liquid storage cylinder 3 and the connecting pipe 15, so that the liquid in the liquid container 16 can return to the liquid storage cylinder 3. A second retaining ring 20 is fixedly installed inside the hollow cylinder 6. The diameter of the second retaining ring 20 is the same as the diameter of the connecting circular plate 9. The second retaining ring 20 can prevent the connecting circular plate 9 and the rubber connecting column 8 from causing excessive compression and damage to the airbag 7 and the top spring 12.

[0022] It should be noted that the four-axis CNC rotary table body 1, fixture 2 and the drive of fixture 2 in this embodiment are all structures and products well known in the prior art. Therefore, this article does not elaborate on them.

[0023] The working principle of the above embodiments is as follows:

[0024] In use, when the clamp 2 moves toward the workpiece, the clamping plate 11 first contacts the workpiece. At this time, the connecting rod 10 retracts into the hollow cylinder 6, thereby driving the connecting round plate 9 and the rubber connecting column 8 to move inside the hollow cylinder 6, causing the rubber connecting column 8 to compress the airbag 7. At this time, the air inside the airbag 7 is discharged through the exhaust check valve 13, the intake check valve 14 is closed, and the top spring 12 is compressed until the connecting round plate 9 contacts the second retaining ring 20. At this time, the clamp 2 continues to move, causing the hollow cylinder 6 to be squeezed and moved, squeezing the plunger 5 into the liquid storage cylinder 3. At this time, the first piston plate 4 moves inside the liquid storage cylinder 3, injecting the hydraulic oil inside the liquid storage cylinder 3 into the liquid container 16 through the connecting pipe 15. The hydraulic oil entering the liquid container 16 then acts on the second piston plate 18. The damping telescopic rod 17 is compressed until the first piston plate 4 contacts the first retaining ring 19. At this time, the clamp 2 and the clamping plate 11 are completely in a contracted state, which can clamp the workpiece. After use, the clamping plate 11 separates from the workpiece and is in a relaxed state. The damping telescopic rod 17 gradually extends and pushes the second piston plate 18 to send the hydraulic oil in the liquid reservoir 16 back to the liquid storage tank 3. The hydraulic oil returning to the liquid storage tank 3 pushes the first piston plate 4 to move, causing the plunger 5 to move to the outside of the liquid storage tank 3. At the same time, the top spring 12 pushes up the compressed air bag 7. During this process, the exhaust check valve 13 is closed and the intake check valve 14 is opened. Air enters the air bag 7 through the intake check valve 14, so that the air bag 7 is filled with air for the next use.

[0025] In Example 2, based on Example 1, the airbag 7 is flexibly connected to the exhaust check valve 13 and the intake check valve 14, which can prevent damage to the exhaust check valve 13 and the intake check valve 14 when the airbag 7 is compressed and contracted.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet servo four-axis CNC rotary table, comprising a four-axis CNC rotary table body (1), wherein the surface of the four-axis CNC rotary table body (1) is provided with two clamps (2), characterized in that: The clamp (2) is equipped with a buffer mechanism; The buffer mechanism includes a liquid storage cylinder (3) fixedly mounted on the surface of the clamp (2). A first piston plate (4) is slidably mounted inside the liquid storage cylinder (3). A plunger (5) penetrating to the outer surface of the liquid storage cylinder (3) is fixedly mounted on the surface of the first piston plate (4). A hollow cylinder (6) is fixedly mounted at the end of the plunger (5) away from the first piston plate (4). An air bladder (7) is fixedly mounted inside the hollow cylinder (6). A rubber connecting post (8) is fixedly mounted on the surface of the air bladder (7). A connecting circular plate (9) is fixedly mounted on the top of the rubber connecting post (8). A connecting rod penetrating to the outer surface of the hollow cylinder (6) is fixedly mounted on the top surface of the connecting circular plate (9). (10) A clamping plate (11) is fixedly installed on the top of the connecting rod (10). A top spring (12) is fixedly installed inside the airbag (7). An air outlet check valve (13) and an air inlet check valve (14) connected to the airbag (7) are fixedly installed on the outer surface of the hollow cylinder (6). A connecting pipe (15) is fixedly installed on the side surface of the liquid storage cylinder (3). A liquid container (16) is fixedly installed at the end of the connecting pipe (15) away from the liquid storage cylinder (3). A damping telescopic rod (17) is fixedly installed inside the liquid container (16). A second piston plate (18) is fixedly installed at one end of the damping telescopic rod (17). Hydraulic oil is added to the liquid storage cylinder (3).

2. A permanent magnet servo four-axis CNC rotary table according to claim 1, characterized in that: The number of connecting rods (10) is multiple, and the multiple connecting rods (10) are evenly distributed between the connecting circular plate (9) and the clamping plate (11). The connecting rods (10) are in sliding contact with the hollow cylinder (6).

3. A permanent magnet servo four-axis CNC rotary table according to claim 1, characterized in that: The opening direction of the exhaust one-way valve (13) faces the outside of the airbag (7), and the opening direction of the intake one-way valve (14) faces the inside of the airbag (7).

4. A permanent magnet servo four-axis CNC rotary table according to claim 1, characterized in that: The liquid storage cylinder (3) is fixedly installed with a first retaining ring (19). The diameter of the first retaining ring (19) is the same as the diameter of the first piston plate (4). The connection between the liquid storage cylinder (3) and the connecting pipe (15) is located on the side of the first retaining ring (19) away from the first piston plate (4).

5. A permanent magnet servo four-axis CNC rotary table according to claim 1, characterized in that: A second retaining ring (20) is fixedly installed inside the hollow cylinder (6), and the diameter of the second retaining ring (20) is the same as the diameter of the connecting circular plate (9).

6. A permanent magnet servo four-axis CNC rotary table according to claim 1, characterized in that: The airbag (7) is flexibly connected to the exhaust check valve (13) and the intake check valve (14).

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