A hydraulic positioning and locking turntable mechanism for a five-axis machining center

Abstract

This application relates to a hydraulic positioning and locking turntable mechanism for a five-axis machining center, belonging to the technical field of mechanical manufacturing. It includes a base that is slidably connected to the machine tool and a tooling disk for clamping a workpiece. The base is rotatably connected to a rotating shaft, and the tooling disk is connected to the rotating shaft via a connecting member. The base is provided with a direct-drive motor for driving the rotating shaft. The stator of the direct-drive motor is arranged on the base, and the rotor of the direct-drive motor is connected to the rotating shaft. The base is provided with a locking assembly for locking the rotation of the rotating shaft. This application has the effect of improving the rotation angle accuracy of the tooling disk.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical manufacturing, and in particular to a hydraulic positioning and locking turntable mechanism for a five-axis machining center. Background Art

[0002] Five-axis machining centers are the only solution for machining impellers, blades, marine propellers, heavy generator rotors, steam turbine rotors, large diesel engine crankshafts, and more. They are high-tech, high-precision machine tools specifically designed for machining complex curved surfaces, enabling complex machining operations with a single workpiece clamping.

[0003] The five-axis machining center includes a machine tool, which is equipped with a tooling disk for clamping the workpiece and a processing head for processing the workpiece on the tooling disk. In order to facilitate the processing of the workpiece by the processing head, the tooling disk can be slid on the machine tool through a slide rail, and can also be rotatably set on the machine tool with the cooperation of a gear and a rack.

[0004] However, in actual use, it is found that waste chips are generated during the processing of the workpiece. If the waste chips enter between the gear and the rack, it will affect the accuracy of the rotation angle of the tooling disk, and thus affect the accuracy of the workpiece processing. Summary of the Invention

[0005] In order to improve the accuracy of the rotation angle of the tooling disk, the present application provides a hydraulic positioning and locking turntable mechanism for a five-axis machining center.

[0006] The present application provides a hydraulic positioning and locking turntable mechanism for a five-axis machining center, which adopts the following technical solutions:

[0007] A hydraulic positioning and locking turntable mechanism for a five-axis machining center includes a base slidably connected to a machine tool and a tooling disk for clamping a workpiece, wherein the base is rotatably connected to a rotating shaft, and the tooling disk is connected to the rotating shaft via a connecting piece, and a direct drive motor is provided on the base for driving the rotating shaft to rotate, the stator of the direct drive motor is arranged on the base, and the rotor of the direct drive motor is connected to the rotating shaft, and a locking assembly is provided on the base for locking the rotation of the rotating shaft.

[0008] By adopting the above technical solution, after the stator and rotor of the direct-drive motor are energized, the rotating shaft can rotate with its own axis as the rotating axis under the cooperation of the stator and the rotor, which facilitates the rotation of the rotating shaft. The waste chips generated during the workpiece processing are not easy to affect the cooperation between the stator and the rotor located in the rotating cavity, thereby improving the accuracy of the rotation angle of the tooling disk. In addition, the rotation of the rotating shaft can be locked by the locking assembly, so that the tooling disk can maintain the angle after rotation.

[0009] Preferably, the locking assembly includes a plurality of locking rods slidably connected to the base, the base is provided with a sliding hole for the locking rod to slide, the locking rod is provided with a locking block with an outer diameter larger than the locking rod at one end close to the tooling disk, and an accommodating cavity for accommodating the locking block and allowing the locking block to slide is provided between the tooling disk and the rotating shaft, the accommodating cavity is communicated with the sliding hole, and after the locking rod slides, the locking block is pressed against or separated from the rotating shaft, and a mating part for controlling the sliding of the locking rod is provided on the base.

[0010] By adopting the above technical solution, the sliding of the locking rod is controlled by the matching parts. When the locking rod slides to the locking block and is tightly against the rotating shaft, the rotation of the rotating shaft is locked. When the locking rod slides to the locking block and is separated from the rotating shaft, the lock on the rotation of the rotating shaft is released. This locking method is not easily affected by the rotation angle of the rotating shaft, which expands the range of the rotation angle of the tooling disk.

[0011] Preferably, a supporting block coaxial with the tooling disk is slidably connected to the base, and a supporting groove for the supporting block to slide is provided on the base, and the supporting groove is connected to the accommodating cavity. When the locking block is pressed against the rotating shaft, the supporting block fits into the side of the tooling disk close to the accommodating cavity, and when the rotating shaft rotates, the supporting block is separated from the tooling disk, and a control part for controlling the sliding of the supporting block is provided on the base.

[0012] By adopting the above technical solution, the supporting block can slide under the action of the control part. In order to reduce the friction between the rotating shaft and the base during rotation, a certain gap is provided between the rotating shaft and the base. During the processing of the workpiece, the workpiece may slide toward the ground due to the force, which will affect the processing accuracy of the workpiece; when the locking block is tightly pressed against the rotating shaft, the supporting block can slide to fit the tooling disk, thereby providing support for the tooling disk, and the tooling disk is not easy to have height displacement during the processing of the workpiece. When the locking block slides toward the tooling disk to release the lock on the rotation of the rotating shaft, the supporting block can move to separate from the tooling disk under the action of its own gravity, so that the tooling disk can rotate normally.

[0013] Preferably, the control member includes a control block connected to the base for sliding movement, the base is provided with a control slide groove for allowing the control block to slide, the two ends of the control slide groove are respectively connected to the sliding hole and the supporting groove, the control block is located at the end of the locking block away from the workpiece disk, the end of the control block close to the locking block is provided with a control inclined surface, the end of the supporting block away from the workpiece disk is provided with a round table surface, and the end of the control block close to the supporting block is provided with a matching inclined surface that fits the round table surface, and in the process of the locking block sliding toward the rotating shaft, the control block is pushed toward the supporting block by the control inclined surface, and in the process of the control block sliding toward the supporting block, the supporting block slides toward the workpiece disk under the cooperation of the matching inclined surface and the round table surface.

[0014] By adopting the above technical solution, during the sliding of the locking block toward the rotating shaft, the control block can slide toward the supporting block with the cooperation of the locking block and the control inclined surface. During the sliding of the control block toward the supporting block, the supporting block can slide toward the tooling disk with the cooperation of the cooperating inclined surface and the conical surface until it fits with the tooling disk. After the locking block slides toward the tooling disk, the supporting block can move to separate from the tooling disk under the action of its own gravity. The sliding process of the supporting block does not require other driving sources, but changes with the state of the locking block, and has a high degree of automation.

[0015] Preferably, the support block is rotatably connected to one end of the tooling disk with a positioning bead, and the tooling disk is correspondingly provided with a positioning groove that cooperates with the positioning bead. When the support block and the tooling disk are fitted together, the positioning bead is embedded in the positioning groove.

[0016] By adopting the above technical solution, with the cooperation of the positioning beads and the positioning grooves, the tooling disk can be positioned after rotation, so that the axis of the tooling disk can coincide with the axis of the base, thereby improving the accuracy of the position of the tooling disk after rotation, thereby improving the accuracy of the workpiece after processing.

[0017] Preferably, the base is provided with a control elastic member for driving the control block to slide toward the locking rod.

[0018] By adopting the above technical solution, the reliability of the control block sliding toward the locking rod after the rotation lock of the rotating shaft is released is improved, thereby facilitating the support block to slide in the direction away from the tooling disk, and the rotation of the tooling disk is not easily affected by the support block.

[0019] Preferably, a limit block is provided on the control block, and a limit slot is provided on the inner wall of the control slot for the limit block to slide. The limit block cooperates with the limit slot to limit the control block from sliding until it is tightly pressed against the outer wall of the locking rod.

[0020] By adopting the above technical solution, the sliding range of the control block is limited under the cooperation of the limit block and the limit slide groove, and it is not easy for the control block to slide and fit into the outer wall of the locking rod under the action of the control elastic part, thereby affecting the normal sliding of the locking rod.

[0021] Preferably, the matching component includes a hydraulic cylinder connected to the base, and the output shaft of the hydraulic cylinder is connected to the end of the locking rod away from the locking block.

[0022] By adopting the above technical solution, the sliding of the locking rod is controlled by the hydraulic cylinder, which makes it easier to control the sliding of the locking rod and improves the degree of automation of the mechanism.

[0023] Preferably, a zero point positioning piece is coaxially provided on the tooling disk.

[0024] Preferably, an encoder for detecting the rotation angle of the rotating shaft is provided on the base.

[0025] By adopting the above technical solution and setting the zero point positioning part, the zero point of the workpiece after clamping can be kept unchanged at all times, which saves the auxiliary time of re-adjusting the zero point, ensures the continuity of work, and improves work efficiency. By setting the encoder, it is convenient to judge the angle of rotation of the tooling disk driven by the rotating shaft, thereby improving the accuracy of the tooling disk rotation angle and improving the processing quality of the workpiece.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. After the stator and rotor of the direct-drive motor are energized, the rotating shaft can rotate with its own axis as the rotating axis under the cooperation of the stator and rotor, which facilitates the rotation of the rotating shaft. The waste chips generated during the workpiece processing are not likely to affect the cooperation between the stator and rotor in the rotating cavity, thereby improving the accuracy of the tooling plate rotation angle.

[0028] 2. By setting the zero point positioning part, the zero point of the workpiece can be kept unchanged after clamping, saving the auxiliary time of re-adjusting the zero point, ensuring the continuity of work and improving work efficiency. By setting the encoder, it is convenient to judge the angle of rotation of the tooling disk driven by the rotating shaft, improving the accuracy of the tooling disk rotation angle and improving the processing quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 This is a cross-sectional view of the rotating shaft locking structure of an embodiment of the present application.

[0031] Figure 3 This is a cross-sectional view of the rotating shaft unlocking structure of an embodiment of the present application.

[0032] Figure 4 yes Figure 2 Enlarged view of part A in .

[0033] Explanation of the accompanying drawings: 1. Base; 11. Rotating shaft; 111. Rotating cavity; 12. Rotating bearing; 13. Limiting slide rail; 131. Limiting groove; 14. Stator; 15. Rotor; 16. Encoder; 2. Tooling disk; 21. Zero point positioning system; 22. Positioning groove; 3. Locking assembly; 31. Locking rod; 311. Sliding hole; 32. Locking block; 321. Accommodating cavity; 33. Hydraulic cylinder; 4. Supporting block; 41. Supporting groove; 42. Positioning bead; 5. Control block; 51. Control slide; 52. Control spring; 53. Limiting block; 531. Limiting slide. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a hydraulic positioning and locking turntable mechanism for a five-axis machining center, referring to Figure 1 and Figure 2 , including a base 1 connected to the machine tool for sliding movement and a tooling disk 2 for clamping the workpiece. The base 1 slides along the length direction of the machine tool. A zero point positioning member is coaxially fixed on the tooling disk 2. Through the setting of the zero point positioning member, in the embodiment of the present application, the zero point positioning member selects a zero point positioning system 21. Through the setting of the zero point positioning system 21, the zero point of the workpiece after clamping can be kept unchanged at all times, saving the auxiliary time for re-adjusting the zero point, ensuring the continuity of work, and improving work efficiency.

[0036] Reference Figure 2 and Figure 3 The base 1 is rotatably connected to a rotating shaft 11 in a ring shape, and the center line of the rotating shaft 11 coincides with the center line of the base 1. A rotating cavity 111 is provided on the base 1 for the rotation of the rotating shaft 11. The tooling disk 2 is coaxially fixed to the rotating shaft 11 through a connecting piece. In the embodiment of the present application, the connecting piece is a connecting bolt. A plurality of connecting through holes for the connecting bolts are penetrated through the tooling disk 2. The base 1 is provided with connecting threaded holes that cooperate with the connecting bolts. The connecting bolts are passed through the connecting through holes and the connecting threaded holes in sequence and then tightened so that the tooling disk 2 is fixed to the rotating shaft 11, which facilitates the fixation of the tooling disk 2 and the rotating shaft 11. When the rotating shaft 11 rotates, it can drive the tooling disk 2 to rotate.

[0037] Reference Figure 2 and Figure 3 The base 1 is provided with a rotating bearing 12. The stationary ring of the rotating bearing 12 is fixed to the inner wall of the rotating cavity 111, and the dynamic ring of the rotating bearing 12 is fixed to the rotating shaft 11. The provision of the rotating bearing 12 reduces the friction between the base 1 and the rotating shaft 11, thereby improving the rotation stability of the rotating shaft 11. The base 1 is provided with a limiting slide 13 coaxial with the rotating shaft 11. The tooling disk 2 is coaxially provided with a limiting groove 131 that cooperates with the limiting slide 13. The limiting slide 13 is embedded in the limiting groove 131. Under the cooperation of the limiting slide 13 and the limiting groove 131, the sliding trajectory of the tooling disk 2 is limited, thereby improving the rotation stability of the tooling disk 2.

[0038] Reference Figure 2 and Figure 3A direct-drive motor is provided on the base 1 for driving the rotating shaft 11 to rotate. The direct-drive motor is located on the side of the rotating bearing 12 away from the tooling disk 2. The stator 14 of the direct-drive motor is fixed to the inner wall of the rotating cavity 111, and the rotor 15 of the direct-drive motor is fixed to the rotating shaft 11. After the stator 14 and the rotor 15 of the direct-drive motor are energized, the rotating shaft 11 can rotate with its own axis as the rotating axis under the cooperation of the stator 14 and the rotor 15, which facilitates the rotation of the rotating shaft 11, and the waste chips generated during the workpiece processing are not easy to affect the cooperation between the stator 14 and the rotor 15 located in the rotating cavity 111, thereby improving the accuracy of the rotation angle of the tooling disk 2.

[0039] Reference Figure 2 An encoder 16 for detecting the rotation angle of the rotating shaft 11 is provided on the base 1. The encoder 16 is located between the limiting slide rail 13 and the rotating bearing 12. Through the setting of the encoder 16, it is further convenient to judge the angle at which the rotating shaft 11 drives the tooling disk 2 to rotate, thereby improving the rotation accuracy of the tooling disk 2.

[0040] Reference Figure 2 and Figure 3 The base 1 is provided with a locking assembly 3 for locking the rotation of the rotating shaft 11. The locking assembly 3 includes six locking rods 31 slidably connected to the base 1. The six locking rods 31 are arranged in a circular array with the axis of the rotating seat as the center. The locking rod 31 is located at the end of the rotating shaft 11 away from the stator 14. The locking rod 31 slides along the height direction of the base 1. The base 1 is provided with a sliding hole 311 for the locking rod 31 to slide. A locking rod 31 with an outer diameter larger than the locking rod 31 is coaxially fixed to the end of the locking rod 31 close to the tooling plate 2. Block 32, an accommodating cavity 321 for accommodating the locking block 32 and for sliding the locking block 32 is provided between the tooling disk 2 and the rotating shaft 11, and the accommodating cavity 321 is communicated with the sliding hole 311. When the locking rod 31 slides to the locking block 32 and presses against the rotating shaft 11, the rotation of the rotating shaft 11 is locked. When the locking rod 31 slides to the locking block 32 and separates from the rotating shaft 11, the lock on the rotation of the rotating shaft 11 is released. This locking method is not easily affected by the rotation angle of the rotating shaft 11, which expands the range of the rotation angle of the tooling disk 2.

[0041] Reference Figure 2 and Figure 3 The base 1 is provided with a matching part for controlling the sliding of the locking rod 31. The matching part includes six hydraulic cylinders 33 fixed to the base 1. The six hydraulic cylinders 33 are arranged corresponding to the six locking rods 31. The hydraulic cylinder 33 is located at the end of the locking rod 31 away from the locking block 32. The output shaft of the hydraulic cylinder 33 is coaxially fixed with the end of the locking rod 31 away from the locking block 32. The sliding of the locking rod 31 is controlled by the hydraulic cylinder 33, which is convenient for operation.

[0042] Reference Figure 2 and Figure 3The base 1 is slidably connected with a supporting block 4 coaxial with the tooling disk 2, and the supporting block 4 slides along the height direction of the base 1. A supporting groove 41 is provided on the base 1 for the supporting block 4 to slide, and the supporting groove 41 is connected to the accommodating cavity 321; when the locking block 32 is pressed against the rotating shaft 11, the supporting block 4 fits into the side of the tooling disk 2 close to the accommodating cavity 321, thereby providing support for the tooling disk 2 during the processing of the workpiece, making it difficult for the tooling disk 2 to move in the height direction, thereby affecting the processing quality of the workpiece, and improving the processing accuracy of the workpiece; when the rotating shaft 11 needs to rotate, the supporting block 4 can be moved to separate from the tooling disk 2, so that the rotation of the tooling disk 2 is not easily affected by the presence of the supporting block 4.

[0043] Reference Figure 2 、 Figure 3 and Figure 4 The base 1 is provided with a control member for controlling the sliding of the supporting block 4, and the control member includes six control blocks 5 that are slidingly connected to the base 1. The six control blocks 5 are corresponding to the six locking rods 31. The control block 5 is located between the locking rod 31 and the supporting block 4. The control block 5 slides along the radial direction of the rotating shaft 11. The base 1 is provided with a control slide groove 51 for the sliding of the control block 5. The two ends of the control slide groove 51 are respectively connected to the sliding hole 311 and the supporting groove 41. After the control block 5 slides, it fits with the locking block 32 or the supporting block 4.

[0044] Reference Figure 2 、 Figure 3 and Figure 4 When the locking block 32 is moved toward the work disk 2, the supporting block 4 can move to separate from the work disk 2 under the action of its own gravity. The sliding process of the supporting block 4 does not require other driving sources to drive, but changes with the state of the locking block 32, and the degree of automation is high.

[0045] Reference Figure 2 、 Figure 3 and Figure 4The base 1 is provided with a control elastic member for driving the control block 5 to slide in the direction of the locking rod 31. In the embodiment of the present application, the control elastic member is selected from a control spring 52. Through the setting of the control spring 52, when the locking block 32 moves in the direction of the tooling disk 2, the control spring 52 can drive the control block 5 to slide in the direction of the locking rod 31, thereby facilitating the sliding of the supporting block 4 in the direction away from the tooling disk 2, and it is not easy for the supporting block 4 to affect the rotation of the tooling disk 2; a limit block 53 is fixedly connected to the side wall of the control block 5 The inner wall of the control slide 51 is provided with a limiting slide groove 531 for the limiting block 53 to slide. The control spring 52 is located in the limiting slide groove 531. One end of the control spring 52 is fixed to the inner wall of the limiting slide groove 531, and the other end of the control spring 52 is fixed to the limiting block 53. Under the cooperation of the limiting block 53 and the limiting slide groove 531, the sliding range of the control block 5 is limited. It is not easy for the control block 5 to slide under the action of the control spring 52 to fit the outer wall of the locking rod 31, thereby affecting the normal sliding of the locking rod 31.

[0046] Reference Figure 2 and Figure 3 The end of the supporting block 4 close to the tooling disk 2 is rotatably connected with a positioning bead 42, and the positioning bead 42 is coaxially arranged with the supporting block 4. A positioning groove 22 cooperating with the positioning bead 42 is coaxially opened on the tooling disk 2. When the supporting block 4 is fitted with the tooling disk 2, the positioning bead 42 is embedded in the positioning groove 22. The tooling disk 2 may be slightly offset after rotation. With the cooperation of the positioning bead 42 and the positioning groove 22, the tooling disk 2 can be positioned after rotation, so that the axis of the tooling disk 2 can coincide with the axis of the base 1, thereby improving the accuracy of the position of the tooling disk 2 after rotation, thereby improving the accuracy of the workpiece after processing.

[0047] The implementation principle of the hydraulic positioning and locking turntable mechanism for a five-axis machining center in the embodiment of the present application is: under the cooperation of the stator 14 and the rotor 15, the rotating shaft 11 is driven to rotate with its own axis as the rotation axis, thereby driving the tooling disk 2 to rotate, and the rotation angle of the tooling disk 2 is detected by the encoder 16.

[0048] The locking rod 31 is driven by the hydraulic cylinder 33 to slide in the direction away from the tooling disk 2 until the locking block 32 is in contact with the rotating shaft 11, thereby locking the rotation of the rotating shaft 11. During this process, the control block 5 can slide toward the supporting block 4 under the cooperation of the locking block 32 and the control inclined surface, so that the supporting block 4 can slide toward the tooling disk 2 under the cooperation of the matching inclined surface and the conical surface until it is in contact with the tooling disk 2, and the positioning bead 42 is embedded in the positioning groove 22.

[0049] When the locking rod 31 is driven by the hydraulic cylinder 33 to slide toward the tooling disk 2, the locking block 32 is released from the rotation of the rotating shaft 11. The control block 5 slides toward the locking rod 31 in cooperation with the control spring 52 and the limit block 53, so that the supporting block 4 can slide in the direction away from the tooling table, and the tooling disk 2 can rotate normally.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydraulic positioning and locking turntable mechanism for a five-axis machining center, characterized by: The invention comprises a base (1) connected to a machine tool in a sliding manner and a tooling disk (2) for clamping a workpiece, wherein a rotating shaft (11) is rotatably connected to the base (1), and the tooling disk (2) is connected to the rotating shaft (11) through a connecting piece, and a direct drive motor is provided on the base (1) for driving the rotating shaft (11) to rotate, a stator (14) of the direct drive motor is arranged on the base (1), and a rotor (15) of the direct drive motor is connected to the rotating shaft (11), and a locking assembly (3) for locking the rotation of the rotating shaft (11) is provided on the base (1); the locking assembly (3) comprises a plurality of locking rods (31) connected to the base (1) in a sliding manner, and a locking assembly (31) is provided on the base (1) for locking the rotating shaft (11). The locking rod (31) has a sliding hole (311) for sliding, and the locking rod (31) is provided with a locking block (32) with an outer diameter larger than the locking rod (31) at one end close to the tooling disk (2). A receiving cavity (321) for accommodating the locking block (32) and allowing the locking block (32) to slide is provided between the tooling disk (2) and the rotating shaft (11). The receiving cavity (321) is communicated with the sliding hole (311). After the locking rod (31) slides, the locking block (32) and the rotating shaft (11) are pressed against or separated. The base (1) is provided with a matching piece for controlling the sliding of the locking rod (31); the base (1) is slidably connected with a supporting block (4) coaxial with the tooling disk (2). The base (1) is provided with a supporting groove (41) for the supporting block (4) to slide, and the supporting groove (41) is communicated with the accommodating cavity (321). When the locking block (32) is pressed against the rotating shaft (11), the supporting block (4) and the side of the tooling disk (2) close to the accommodating cavity (321) are fitted together. When the rotating shaft (11) rotates, the supporting block (4) and the tooling disk (2) are separated. The base (1) is provided with a control member for controlling the sliding of the supporting block (4); the control member includes a control block (5) slidably connected to the base (1), and the base (1) is provided with a control groove (51) for the sliding of the control block (5), and the two ends of the control groove (51) are respectively connected to the sliding hole (311) is connected to the supporting groove (41), the control block (5) is located at the end of the locking block (32) away from the tooling disk (2), the end of the control block (5) close to the locking block (32) is provided with a control inclined surface, the end of the supporting block (4) away from the tooling disk (2) is provided with a round table surface, the end of the control block (5) close to the supporting block (4) is provided with a matching inclined surface that fits with the round table surface, in the process of the locking block (32) sliding toward the rotating shaft (11), the control block (5) is pushed to slide toward the supporting block (4) through the control inclined surface, and in the process of the control block (5) sliding toward the supporting block (4), the supporting block (4) slides toward the tooling disk (2) under the cooperation of the matching inclined surface and the round table surface.

2. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 1, characterized in that: The supporting block (4) is rotatably connected to one end of the tooling disk (2) with a positioning bead (42); a positioning groove (22) corresponding to the tooling disk (2) is provided, and the positioning bead (42) is embedded in the positioning groove (22) when the supporting block (4) and the tooling disk (2) are in contact with each other.

3. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 1, characterized in that: The base (1) is provided with a control elastic member for driving the control block (5) to slide in the direction of the locking rod (31).

4. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 3, characterized in that: The control block (5) is provided with a limit block (53), and the inner wall of the control slide groove (51) is provided with a limit slide groove (531) for the limit block (53) to slide. The limit block (53) cooperates with the limit slide groove (531) to limit the control block (5) from sliding until it is tightly pressed against the outer wall of the locking rod (31).

5. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 1, characterized in that: The matching component comprises a hydraulic cylinder (33) connected to the base (1), and an output shaft of the hydraulic cylinder (33) is connected to an end of the locking rod (31) facing away from the locking block (32).

6. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 1, characterized in that: A zero point positioning piece is coaxially provided on the tooling disc (2).

7. The hydraulic positioning and locking turntable mechanism for a five-axis machining center according to claim 1, characterized in that: An encoder (16) for detecting the rotation angle of the rotating shaft (11) is provided on the base (1).

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