Five-axis rotary table with stacked brake pad structure

Abstract

This invention proposes a five-axis rotary table with a stacked brake pad structure. The increased braking friction area is achieved by cross-stacking rotating and stationary brake pads, thereby increasing the braking force of the five-axis rotary table. Simultaneously, high-pressure gas or liquid is introduced into the first and second accommodating cavities, causing the piston assembly to move upwards or downwards, significantly increasing the piston thrust. The thrust generated by the elasticity of the elastic body behind the piston and the external air or oil pressure further compresses the rotating and stationary brake pads, increasing the frictional force between the multiple rotating and stationary brake pads. This gives the five-axis rotary table rapid braking response and provides greater braking force. Consequently, the entire five-axis machine tool can self-lock during transportation and power outage maintenance, ensuring equipment and personnel safety. It can also support heavier parts and withstand greater spindle cutting torque during production.

Description

Technical Field

[0001] This invention relates to the field of five-axis rotary table technology, and more specifically, to a five-axis rotary table having a stacked brake pad structure. Background Technology

[0002] A five-axis cradle rotary table is a type of CNC machine tool rotary table and a commonly used component in machine tool processing. The workpiece is fixed on the rotating worktable of the five-axis rotary table, and the machining requirements are met by a combination of rotation and oscillation of the five-axis table. There are five drive methods for five-axis cradle rotary tables: 1) servo motor driven worm gear transmission; 2) servo motor driven harmonic reducer transmission; 3) servo motor driven roller cam reducer transmission; 4) servo motor driven gear reducer transmission; and 5) direct motor drive. Compared to the previous four mechanical transmission methods, the direct motor drive method eliminates mechanical wear and can maintain high precision and high response for extended periods. However, since the direct drive method lacks mechanical friction and self-locking force, an additional braking device is required. During machine tool manufacturing, transportation, power outages, and when the rotary table is locked for angled machining, the braking device must be used to stop the rotation of the rotating axes.

[0003] The closest existing technology is disclosed in CN117685316A, which discloses a bidirectional piston brake structure. This structure includes a cylinder body shell 20 sleeved outside a rotating shaft 10 and a brake pad 30 fixedly connected to the rotating shaft 10. The cylinder body shell 20 is stationary relative to the rotating shaft 10. A groove 21 is provided in the cylinder body shell 20, and a piston 50 is provided within the groove 21. The piston 50 divides the groove 21 into a first chamber 23 and a second chamber 22. The piston 50 is located on one side of the brake pad 30. When pressure is injected into the first chamber 23, the piston 50 moves towards the second chamber 22, at which point the piston 50 disengages from the brake pad 30. When pressure is injected into the second chamber 22, the piston 50 moves towards the first chamber 23, at which point the piston 50 contacts and presses against the brake pad 30.

[0004] The braking structure of the existing five-axis direct drive rotary table is a single-plate brake, which provides relatively small braking force and is still unable to provide greater braking force for the rotary axis under heavy load and high torque conditions.

[0005] In view of this, the present invention proposes a five-axis turntable with a stacked brake pad structure that has a large braking force and a simple structure. Summary of the Invention

[0006] The purpose of this invention is to provide a five-axis turntable with a stacked brake pad structure that has a large braking force and a simple structure.

[0007] A five-axis rotary table with a stacked brake pad structure includes a braking device 1 and a five-axis rotary table 2. The braking device 1 is housed within the five-axis rotary table 2. The braking device 1 provides braking force to the rotating shaft 11 of the five-axis rotary table. The braking device 1 includes rotating brake pads 3, stationary brake pads 4, and a piston 8. A bearing is provided between the rotating shaft 11 and the outer shell 12 of the five-axis rotary table. The rotating brake pads 3 are fixedly mounted on the rotating shaft 11. A front cover plate 13 and a cylinder cover plate 14 are sequentially provided at one end of the outer shell 12 of the five-axis rotary table. The stationary brake pads 4 are fixedly mounted on the cylinder cover plate 14. The rotating brake pads 3 and stationary brake pads 4 are disposed in the cavity between the front cover plate 13 and the cylinder cover plate 14. Multiple rotating brake pads 3 and stationary brake pads 4 are present, and they are stacked crosswise. One side of the crosswise stacked rotating brake pads 3 and stationary brake pads 4 is provided with... There is a piston 8, which is used to squeeze the rotating brake pad 3 and the stationary brake pad 4. When the piston 8 moves forward and the gap between it and the stationary front cover plate 13 decreases, the cross-stacked rotating brake pad 3 and stationary brake pad 4 are squeezed. The mechanical friction generated by the squeeze forces the rotating brake pad 3 to stop rotating, thereby stopping the rotation of the five-axis turntable shaft 11 and achieving the purpose of braking. One end of the piston 8 and the cylinder cover plate 14 forms a first accommodating cavity 6, and the other end of the piston 8 and the five-axis turntable housing 12 forms a second accommodating cavity 7. The first accommodating cavity 6 is close to the rotating brake pad 3 and the stationary brake pad 4, and the second accommodating cavity 7 is away from the rotating brake pad 3 and the stationary brake pad 4. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to squeeze or release the rotating brake pad 3 and the stationary brake pad 4.

[0008] Furthermore, a washer is provided between the adjacent rotating brake pad 3 and the stationary brake pad 4. The washer creates a gap between the adjacent surfaces of the rotating brake pad 3 and the stationary brake pad 4, and the washer supports the gap. When the piston 8 does not move upward and does not apply pressure to the rotating brake pad 3 and the stationary brake pad 4, there is a gap between the rotating brake pad 3 and the stationary brake pad 4, and the five-axis turntable shaft 11 can rotate freely.

[0009] Furthermore, the washer supports the cross-stacked rotating brake pads 3 and stationary brake pads 4, creating a gap between two adjacent end faces, with a gap of 0.01mm-0.5mm.

[0010] In some embodiments, the rotating brake pad 3 and the stationary brake pad 4 are elastic bodies with axial deformation offset and recovery capabilities, and the material of the elastic body with axial deformation offset and recovery capabilities is either a metal ring shape or a non-metallic synthetic material ring shape.

[0011] Furthermore, the thickness of the rotating brake pad 3 and the stationary brake pad 4 is 0.2mm-5.0mm.

[0012] In some embodiments, the contact surface between the rotating brake pad 3 and the stationary brake pad 4 is either a smooth surface or a rough surface, with a rough surface being more preferred. The rough surface is used to increase the friction between the rotating brake pad 3 and the stationary brake pad 4. The rough surface is treated by one of the following methods: embossing, sandblasting, thermal spraying of metal particles, or machining scoring.

[0013] In some embodiments, a first accommodating cavity 6 is formed at one end between the piston 8 and the cylinder cover plate 14, and a second accommodating cavity 7 is formed at the other end between the piston 8 and the five-axis turntable housing 12. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to compress or not compress the rotating brake pad 3 and the stationary brake pad 4. The piston 8 plays the role of compressing and releasing the rotating brake pad 3 and the stationary brake pad 4.

[0014] Furthermore, the piston 8 is provided with a step near the end of the rotating brake pad 3 and the stationary brake pad 4. The step is used to make it easier for the rotating brake pad 3 and the stationary brake pad 4 to contact and disengage from the five-axis turntable housing 12.

[0015] Furthermore, piston 8 is either a one-piece molded structure or a detachable split structure.

[0016] Furthermore, the detachable split structure of the piston 8 includes a piston body and a piston rod. The piston body is connected to the rotating brake pad 3 and the stationary brake pad 4 through the piston rod. The movement of the piston body will drive the piston rod to move accordingly.

[0017] Furthermore, the piston body side and the cylinder cover plate 14 and the five-axis turntable housing 12 are respectively provided with sealing rings 15, so that the first accommodating cavity 6 and the second accommodating cavity 7 are sealed independent chambers.

[0018] In some embodiments, an elastic element 10 is provided on the side of the piston 8 away from the rotating brake pad 3 and the stationary brake pad 4. The elastic element 10 is an elastic body. When there is no external force, the elastic element 10 will release elastic force to continuously push the piston 8 towards the rotating brake pad 3 and the stationary brake pad 4, so that the rotating brake pad 3 and the stationary brake pad 4 form a normally closed compression friction with the front cover plate 13. Thus, when the five-axis turntable 2 is not powered or when there is no high-pressure gas or liquid input into the first accommodating cavity 6 and the second accommodating cavity 7, the five-axis turntable shaft 11 is in a state of being braked. The elastic element 10 and the piston 8 are detachable split structures or integrally formed structures.

[0019] Furthermore, the elastic element 10 is one or a combination of a metal elastomer, a polyurethane elastomer, and a rubber elastomer. When the elastic element 10 is a metal elastomer, it is a helical spring or a metal sheet; when the elastic element 10 is a polyurethane elastomer, it is polyurethane; and when the elastic element 10 is a rubber elastomer, it is rubber.

[0020] The beneficial effects of this invention are as follows: This invention proposes a five-axis rotary table with a stacked brake pad structure, including a braking device and a five-axis rotary table. The braking device is installed inside the five-axis rotary table to provide braking force to the rotating shaft of the five-axis rotary table. By stacking rotating brake pads and stationary brake pads in a cross manner, the braking friction area is increased, thereby increasing the braking force of the five-axis rotary table. At the same time, high-pressure gas or liquid is introduced into the first and second accommodating cavities, causing the piston assembly to move upward or downward, greatly increasing the piston thrust. The thrust generated by the elasticity of the elastic body behind the piston and the external air or oil pressure pushing the piston double-push the piston to squeeze the rotating brake pads and stationary brake pads. The squeezing friction force on the multiple rotating brake pads and stationary brake pads is further increased, giving the five-axis rotary table a fast-response braking performance and providing greater braking force. This allows the entire five-axis machine tool to self-lock and brake during transportation and power outage maintenance, ensuring the safety of equipment and personnel. It can also bear heavier parts and withstand greater spindle cutting torque during production and processing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a five-axis rotary table with a stacked brake pad structure according to this application.

[0022] Figure 2 This is a side view of a five-axis rotary table with a stacked brake pad structure according to this application.

[0023] Figure 3 This is a cross-sectional view of a five-axis rotary table with a stacked brake pad structure according to this application.

[0024] Figure 4 This is a partially enlarged cross-sectional view of a braking device for a five-axis turntable with a stacked brake pad structure, as described in Embodiment 1.

[0025] Figure 5 This is a partially enlarged cross-sectional view of a braking device for a five-axis turntable with a stacked brake pad structure, as described in Embodiment 2.

[0026] Explanation of main component symbols

[0027] Braking device 1, five-axis turntable 2, rotating brake pad 3, stationary brake pad 4, first accommodating cavity 6, second accommodating cavity 7, piston 8, elastic element 10, five-axis turntable shaft 11, five-axis turntable housing 12, front cover plate 13, cylinder cover plate 14, sealing ring 15.

[0028] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0029] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0030] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0031] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0032] like Figure 1 The diagram shown is a structural schematic of a five-axis rotary table with a stacked brake pad structure according to this application; Figure 2 The image shown is a side view of a five-axis rotary table with a stacked brake pad structure according to this application; as shown... Figure 3 The image shown is a cross-sectional view of a five-axis rotary table with a stacked brake pad structure according to this application; as shown... Figure 4 The image shown is a partially enlarged cross-sectional view of a braking device for a five-axis turntable with a stacked brake pad structure according to Embodiment 1.

[0033] A five-axis rotary table with a stacked brake pad structure includes a braking device 1 and a five-axis rotary table 2. The braking device 1 is housed within the five-axis rotary table 2. The braking device 1 provides braking force to the rotating shaft 11 of the five-axis rotary table. The braking device 1 includes rotating brake pads 3, stationary brake pads 4, and a piston 8. A bearing is provided between the rotating shaft 11 and the outer shell 12 of the five-axis rotary table. The rotating brake pads 3 are fixedly mounted on the rotating shaft 11. A front cover plate 13 and a cylinder cover plate 14 are sequentially provided at one end of the outer shell 12 of the five-axis rotary table. The stationary brake pads 4 are fixedly mounted on the cylinder cover plate 14. The rotating brake pads 3 and stationary brake pads 4 are disposed in the cavity between the front cover plate 13 and the cylinder cover plate 14. Multiple rotating brake pads 3 and stationary brake pads 4 are present, and they are stacked crosswise. One side of the crosswise stacked rotating brake pads 3 and stationary brake pads 4 is provided with... There is a piston 8, which is used to squeeze the rotating brake pad 3 and the stationary brake pad 4. When the piston 8 moves forward and the gap between it and the stationary front cover plate 13 decreases, the cross-stacked rotating brake pad 3 and stationary brake pad 4 are squeezed. The mechanical friction generated by the squeeze forces the rotating brake pad 3 to stop rotating, thereby stopping the rotation of the five-axis turntable shaft 11 and achieving the purpose of braking. One end of the piston 8 and the cylinder cover plate 14 forms a first accommodating cavity 6, and the other end of the piston 8 and the five-axis turntable housing 12 forms a second accommodating cavity 7. The first accommodating cavity 6 is close to the rotating brake pad 3 and the stationary brake pad 4, and the second accommodating cavity 7 is away from the rotating brake pad 3 and the stationary brake pad 4. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to squeeze or release the rotating brake pad 3 and the stationary brake pad 4.

[0034] Furthermore, a washer is provided between the adjacent rotating brake pad 3 and the stationary brake pad 4. The washer creates a gap between the adjacent surfaces of the rotating brake pad 3 and the stationary brake pad 4, and the washer supports the gap. When the piston 8 does not move upward and does not apply pressure to the rotating brake pad 3 and the stationary brake pad 4, there is a gap between the rotating brake pad 3 and the stationary brake pad 4, and the five-axis turntable shaft 11 can rotate freely.

[0035] Furthermore, the washer supports the cross-stacked rotating brake pads 3 and stationary brake pads 4, creating a gap between two adjacent end faces, with a gap of 0.01mm-0.5mm.

[0036] In some embodiments, the rotating brake pad 3 and the stationary brake pad 4 are elastic bodies with axial deformation offset and recovery capabilities, and the material of the elastic body with axial deformation offset and recovery capabilities is either a metal ring shape or a non-metallic synthetic material ring shape.

[0037] Furthermore, the thickness of the rotating brake pad 3 and the stationary brake pad 4 is 0.2mm-5.0mm.

[0038] In some embodiments, the contact surface between the rotating brake pad 3 and the stationary brake pad 4 is either a smooth surface or a rough surface, with a rough surface being more preferred. The rough surface is used to increase the friction between the rotating brake pad 3 and the stationary brake pad 4. The rough surface is treated by one of the following methods: embossing, sandblasting, thermal spraying of metal particles, or machining scoring.

[0039] In some embodiments, a first accommodating cavity 6 is formed at one end between the piston 8 and the cylinder cover plate 14, and a second accommodating cavity 7 is formed at the other end between the piston 8 and the five-axis turntable housing 12. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to compress or not compress the rotating brake pad 3 and the stationary brake pad 4. The piston 8 plays the role of compressing and releasing the rotating brake pad 3 and the stationary brake pad 4.

[0040] Furthermore, the piston 8 is provided with a step near the end of the rotating brake pad 3 and the stationary brake pad 4. The step is used to make it easier for the rotating brake pad 3 and the stationary brake pad 4 to contact and disengage from the five-axis turntable housing 12.

[0041] Furthermore, piston 8 is a one-piece molded structure. Example 2:

[0042] like Figure 1 The diagram shown is a structural schematic of a five-axis rotary table with a stacked brake pad structure according to this application; Figure 2 The image shown is a side view of a five-axis rotary table with a stacked brake pad structure according to this application; as shown... Figure 3 The image shown is a cross-sectional view of a five-axis rotary table with a stacked brake pad structure according to this application; as shown... Figure 5 The image shown is a partially enlarged cross-sectional view of a braking device for a five-axis turntable with a stacked brake pad structure according to Embodiment 2.

[0043] A five-axis rotary table with a stacked brake pad structure includes a braking device 1 and a five-axis rotary table 2. The braking device 1 is housed within the five-axis rotary table 2. The braking device 1 provides braking force to the rotating shaft 11 of the five-axis rotary table. The braking device 1 includes rotating brake pads 3, stationary brake pads 4, and a piston 8. A bearing is provided between the rotating shaft 11 and the outer shell 12 of the five-axis rotary table. The rotating brake pads 3 are fixedly mounted on the rotating shaft 11. A front cover plate 13 and a cylinder cover plate 14 are sequentially provided at one end of the outer shell 12 of the five-axis rotary table. The stationary brake pads 4 are fixedly mounted on the cylinder cover plate 14. The rotating brake pads 3 and stationary brake pads 4 are disposed in the cavity between the front cover plate 13 and the cylinder cover plate 14. Multiple rotating brake pads 3 and stationary brake pads 4 are present, and they are stacked crosswise. One side of the crosswise stacked rotating brake pads 3 and stationary brake pads 4 is provided with... There is a piston 8, which is used to squeeze the rotating brake pad 3 and the stationary brake pad 4. When the piston 8 moves forward and the gap between it and the stationary front cover plate 13 decreases, the cross-stacked rotating brake pad 3 and stationary brake pad 4 are squeezed. The mechanical friction generated by the squeeze forces the rotating brake pad 3 to stop rotating, thereby stopping the rotation of the five-axis turntable shaft 11 and achieving the purpose of braking. One end of the piston 8 and the cylinder cover plate 14 forms a first accommodating cavity 6, and the other end of the piston 8 and the five-axis turntable housing 12 forms a second accommodating cavity 7. The first accommodating cavity 6 is close to the rotating brake pad 3 and the stationary brake pad 4, and the second accommodating cavity 7 is away from the rotating brake pad 3 and the stationary brake pad 4. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to squeeze or release the rotating brake pad 3 and the stationary brake pad 4.

[0044] A washer is provided between the adjacent rotating brake pad 3 and the stationary brake pad 4. The washer creates a gap between the adjacent surfaces of the rotating brake pad 3 and the stationary brake pad 4. The washer supports the gap. When the piston 8 does not move upward and does not apply pressure to the rotating brake pad 3 and the stationary brake pad 4, there is a gap between the rotating brake pad 3 and the stationary brake pad 4, and the five-axis turntable shaft 11 can rotate freely.

[0045] The washer supports the cross-stacked rotating brake pads 3 and stationary brake pads 4, creating a gap between two adjacent end faces, with a gap of 0.01mm-0.5mm.

[0046] The rotating brake pad 3 and the stationary brake pad 4 are elastic bodies with axial deformation offset and recovery capabilities. The material of the elastic body with axial deformation offset and recovery capabilities is either a metal ring or a non-metallic synthetic material ring.

[0047] The thickness of the rotating brake pad 3 and the stationary brake pad 4 is 0.2mm-5.0mm.

[0048] The contact surface between the rotating brake pad 3 and the stationary brake pad 4 is either a smooth surface or a rough surface, with a rough surface being more preferred. The rough surface is used to increase the friction between the rotating brake pad 3 and the stationary brake pad 4. The rough surface is treated by one of the following methods: embossing, sandblasting, thermal spraying of metal particles, or machining scoring.

[0049] The piston 8 forms a first accommodating cavity 6 at one end between itself and the cylinder cover plate 14, and a second accommodating cavity 7 is formed at the other end between itself and the five-axis turntable housing 12. High-pressure gas or liquid is introduced into the first accommodating cavity 6 and the second accommodating cavity 7 to make the piston 8 move upward or downward to compress or not compress the rotating brake pad 3 and the stationary brake pad 4. The piston 8 plays the role of compressing and releasing the rotating brake pad 3 and the stationary brake pad 4.

[0050] Furthermore, the piston 8 is provided with a step near the end of the rotating brake pad 3 and the stationary brake pad 4. The step is used to make it easier for the rotating brake pad 3 and the stationary brake pad 4 to contact and disengage from the five-axis turntable housing 12.

[0051] Furthermore, piston 8 is a detachable, split-type structure.

[0052] Furthermore, the detachable split structure of the piston 8 includes a piston body and a piston rod. The piston body is connected to the rotating brake pad 3 and the stationary brake pad 4 through the piston rod. The movement of the piston body will drive the piston rod to move accordingly.

[0053] Furthermore, the piston body side and the cylinder cover plate 14 and the five-axis turntable housing 12 are respectively provided with sealing rings 15, so that the first accommodating cavity 6 and the second accommodating cavity 7 are sealed independent chambers.

[0054] In some embodiments, an elastic element 10 is provided on the side of the piston 8 away from the rotating brake pad 3 and the stationary brake pad 4. The elastic element 10 is an elastic body. When there is no external force, the elastic element 10 will release elastic force to continuously push the piston 8 towards the rotating brake pad 3 and the stationary brake pad 4, so that the rotating brake pad 3 and the stationary brake pad 4 form a normally closed compression friction with the front cover plate 13. Thus, when the five-axis turntable 2 is not powered or when there is no high-pressure gas or liquid input into the first accommodating cavity 6 and the second accommodating cavity 7, the five-axis turntable shaft 11 is in a state of being braked. The elastic element 10 and the piston 8 are detachable split structures or integrally formed structures.

[0055] Furthermore, the elastic element 10 is one or a combination of a metal elastomer, a polyurethane elastomer, and a rubber elastomer. When the elastic element 10 is a metal elastomer, it is a helical spring or a metal sheet; when the elastic element 10 is a polyurethane elastomer, it is polyurethane; and when the elastic element 10 is a rubber elastomer, it is rubber.

[0056] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and all such modifications and improvements fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. A five-axis rotary table with a stacked brake pad structure, comprising a brake device (1) and a five-axis rotary table (2), wherein the brake device (1) is provided inside the five-axis rotary table (2), and the brake device (1) is used to provide braking force to the rotating shaft (11) of the five-axis rotary table, characterized in that: The braking device (1) includes a rotating brake pad (3), a stationary brake pad (4), and a piston (8). A bearing is provided between the five-axis turntable shaft (11) and the five-axis turntable housing (12). The rotating brake pad (3) is fixedly installed on the five-axis turntable shaft (11). A front cover plate (13) and a cylinder cover plate (14) are provided sequentially at one end of the five-axis turntable housing (12). The stationary brake pad (4) is fixedly installed on the cylinder cover plate (14). The rotating brake pad (3) and the stationary brake pad (4) are located in the cavity between the front cover plate (13) and the cylinder cover plate (14). There are multiple rotating brake pads (3) and stationary brake pads (4). The rotating brake pads (3) and stationary brake pads (4) are stacked crosswise. A piston (8) is provided on one side where the rotating brake pads (3) and stationary brake pads (4) are stacked crosswise. The piston (8) is used to squeeze the rotating brake pads (3) and stationary brake pads (4). When the piston (8) When the gap between the front cover plate (13) moving forward and the stationary front cover plate (13) decreases, the cross-stacked rotating brake pads (3) and stationary brake pads (4) are squeezed. The mechanical friction generated by the squeeze forces the rotating brake pads (3) to stop rotating, thereby stopping the rotation of the five-axis turntable shaft (11) and achieving the purpose of braking. A first accommodating cavity (6) is formed at one end between the piston (8) and the cylinder cover plate (14), and a second accommodating cavity (7) is formed at the other end between the piston (8) and the five-axis turntable housing (12). The first accommodating cavity (6) is close to the rotating brake pads (3) and stationary brake pads (4), and the second accommodating cavity (7) is far away from the rotating brake pads (3) and stationary brake pads (4). High-pressure gas or liquid is introduced into the first accommodating cavity (6) and the second accommodating cavity (7) so that the piston (8) moves upward or downward to squeeze or release the rotating brake pads (3) and stationary brake pads (4).

2. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: A washer is provided between the adjacent rotating brake pad (3) and the stationary brake pad (4). The washer creates a gap between the adjacent surfaces of the rotating brake pad (3) and the stationary brake pad (4). The washer supports the gap. When the piston (8) does not move upward and does not apply pressure to the rotating brake pad (3) and the stationary brake pad (4), there is a gap between the rotating brake pad (3) and the stationary brake pad (4), and the five-axis turntable shaft (11) can rotate freely.

3. The five-axis rotary table with a stacked brake pad structure as described in claim 2, characterized in that: The washer supports the cross-stacked rotating brake pads (3) and stationary brake pads (4) and creates a gap between the two adjacent end faces, providing a gap of 0.01mm-0.5mm.

4. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: The rotating brake pad (3) and the stationary brake pad (4) are elastic bodies with axial deformation offset and reset capabilities. The material of the elastic body with axial deformation offset and reset capabilities is either a metal ring or a non-metallic synthetic material ring.

5. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: The thickness of the rotating brake pad (3) and the stationary brake pad (4) is 0.2mm-5.0mm.

6. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: The contact surface between the rotating brake pad (3) and the stationary brake pad (4) is either a smooth surface or a rough surface.

7. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: The piston (8) forms a first accommodating cavity (6) at one end between the piston (8) and the cylinder cover plate (14), and a second accommodating cavity (7) forms at the other end between the piston (8) and the five-axis turntable housing (12). High-pressure gas or liquid is introduced into the first accommodating cavity (6) and the second accommodating cavity (7) to make the piston (8) move upward or downward to squeeze or not squeeze the rotating brake pad (3) and the stationary brake pad (4). The piston (8) plays the role of squeezing and releasing the rotating brake pad (3) and the stationary brake pad (4).

8. The five-axis rotary table with a stacked brake pad structure as described in claim 7, characterized in that: The piston (8) is either a detachable split structure or a one-piece molded structure.

9. The five-axis rotary table with a stacked brake pad structure as described in claim 1, characterized in that: An elastic element (10) is provided on the side of the piston (8) away from the rotating brake pad (3) and the stationary brake pad (4). The elastic element (10) is an elastic body. When there is no external force, the elastic element (10) will release the elastic force to continuously push the piston (8) towards the rotating brake pad (3) and the stationary brake pad (4), so that the rotating brake pad (3) and the stationary brake pad (4) form a normally closed compression friction with the front cover plate (13). Thus, when the five-axis turntable (2) is not powered or when there is no high pressure gas or liquid input into the first accommodating cavity (6) and the second accommodating cavity (7), the five-axis turntable shaft (11) is in a state of being braked. The elastic element (10) and the piston (8) are detachable split structures or integral molded structures.

10. The five-axis rotary table with a stacked brake pad structure as described in claim 9, characterized in that: The elastic element (10) is one or a combination of metal elastomer, polyurethane elastomer, and rubber elastomer.

Images