A hydraulic disc locking device for a machine tool rotary mechanism

Abstract

This invention discloses a hydraulic disc locking device for a machine tool rotary mechanism, relating to the field of machine tool accessories technology. The device includes a support platform, a cradle rotary support, and a hydraulic locking seat. This invention achieves dual, multi-point hydraulic clamping of the rotary shaft by setting multiple sets of clamping seats and pressure seats, all arranged around the outside of the rotary shaft. During clamping, the clamping seats and pressure seats apply axial forces in two directions to the rotary shaft, thereby increasing the range of the locking force and improving the rotary shaft's resistance to complex cutting forces from both axial and radial directions during locking. This enhances the locking stability of the machine tool rotary mechanism at multiple angles. Furthermore, the multiple sets of clamping seats and pressure seats share a single hydraulic system as a power source, resulting in low control difficulty and high precision, greatly ensuring the stability of the machine tool rotary mechanism after locking after rotation.

Description

Technical Field

[0001] This invention relates to the field of machine tool accessories technology, and in particular to a hydraulic disc locking device for a machine tool rotary mechanism. Background Technology

[0002] The rotary mechanism of a CNC machine tool, especially the cradle-type rotary table of a five-axis machining center, is a core functional component for machining complex curved surfaces and multi-angle machining. Its performance directly determines the machining accuracy, efficiency, and stability of the machine tool. Among these components, the locking device of the rotary axis is crucial to ensuring that the table can resist cutting forces and maintain absolute positioning accuracy during machining.

[0003] Currently, the mainstream hydraulic locking solution on the market is radial clamping locking. This type of device is represented by hydraulic disc locking devices. It uses hydraulic pressure to cause radial elastic deformation of the locking disc, thereby clamping the rotating shaft. Its advantage is that the force flow path is short and it can directly resist cutting torque. However, its locking force is concentrated in a single radial position. For working conditions that need to resist complex multidimensional forces (especially axial forces), there is still room for improvement in rigidity. It is difficult to efficiently resist complex cutting forces from the axial and radial directions. In addition, the locking process may interfere with the bearing accuracy, ultimately affecting the rotation accuracy of the machine tool's rotating mechanism.

[0004] Therefore, it is necessary to invent a hydraulic disc locking device for a machine tool rotary mechanism to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic disc locking device for a machine tool rotary mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic disc locking device for a machine tool rotary mechanism, comprising:

[0007] A platform, on which a tilting motor is fixedly installed;

[0008] A cradle slewing support is rotatably mounted above a support platform. One end of the cradle slewing support is fixedly provided with a slewing shaft, and the outer end of the slewing shaft is provided with a positioning ring, and the outer side of the positioning ring is provided with a positioning bearing.

[0009] A hydraulic locking seat is fixedly mounted on the upper surface of a support platform and has a through groove in the middle. A bearing seat is fixedly mounted inside the hydraulic locking seat, and a positioning bearing is located inside the bearing seat. The hydraulic locking seat has multiple slidable clamps inside, and the multiple clamps are arranged around the outside of the rotating shaft. A pressure ring is slidably mounted inside the hydraulic locking seat. One end of each of the multiple clamps is slidably attached to the inner wall of the pressure ring. Multiple pressure seats are rotatably mounted inside the hydraulic locking seat. Each of the multiple pressure seats has a "<" shaped structure. One end of each of the multiple pressure seats is attached to the edge of the outer wall of the positioning bearing, and the other end of each of the multiple pressure seats is attached to the outer wall of the positioning ring.

[0010] Preferably, the support arm is fixedly disposed in the middle of the pressure seat;

[0011] The transmission arm is located inside the hydraulic locking seat and one end is movably connected to one end of the support arm via a pin. The other end of the transmission arm is rotatably provided with a transmission seat via a pin.

[0012] A piston rod is located inside the hydraulic locking seat and one end is fixedly connected to the outer wall of the pressure ring. The middle part of the piston rod is fixedly connected to the transmission seat. The piston rod is used to provide the pressure seat with the power to rotate and to provide the pressure ring with the power to slide horizontally.

[0013] Preferably, the piston head is fixedly disposed at the other end of the piston rod;

[0014] The piston chamber is located inside the hydraulic locking seat, and the piston head is slidably located inside the piston chamber;

[0015] The oil guide cavity is designed as an annular structure and located inside the hydraulic locking seat. A connecting groove is provided between the oil guide cavity and the piston cavity, and two oil guide grooves are provided through the inner sidewall of the oil guide cavity.

[0016] Preferably, the fixed seat is fixedly disposed inside the hydraulic locking seat. The end of the outer wall of the pressure seat near the positioning bearing is movably connected to the outer wall of the fixed seat through a pin. The fixed seat is used to limit the rotation range of the pressure seat. During the rotation of the pressure seat, one end remains in contact with the outer wall of the positioning bearing. The end of the pressure seat near the positioning bearing is provided with a rounded corner.

[0017] The abrasive disc is fixedly mounted on one end of the pressure seat near the positioning ring and fits against the outer wall of the positioning ring. After the pressure seat is flipped over, the abrasive disc presses the positioning ring to lock the rotating shaft.

[0018] Preferably, a limiting ring is fixedly disposed inside the hydraulic locking seat. The inner sidewall of the limiting ring is provided with multiple positioning grooves. Multiple clamps are slidably disposed inside the multiple positioning grooves. Each clamp is provided with an inclined surface at one end near the pressure ring. The side of the pressure ring near the clamp is provided with an inclined structure. When the pressure ring slides horizontally, the inclined surface squeezes the clamp, causing the clamp to clamp the rotating shaft.

[0019] A tension spring is disposed between the clamp and the limiting ring, and the tension spring is used to provide a force to the clamp away from the rotation axis.

[0020] Preferably, one end of the bearing housing has a groove, the positioning bearing is located in the groove, and the outer ring of the positioning bearing is interference-fitted with the groove.

[0021] Preferably, an annular groove is provided at one end of the outer wall of the rotating shaft, the positioning ring is located in the annular groove, and the outer wall of the positioning ring is interference-fitted with the inner ring of the positioning bearing.

[0022] Preferably, the end of the clamp near the rotating shaft is designed as an arc shape, and multiple clamps slide synchronously toward the rotating shaft after being squeezed by the pressure ring to achieve clamping and fixing of the rotating shaft.

[0023] Preferably, the hydraulic pump station is located below the support platform, and oil pipe joints are fixedly provided at the openings of the two oil guide grooves, with the output end of the hydraulic pump station connected to the oil pipe joints.

[0024] Preferably, the end of the cradle slewing support away from the slewing shaft is connected to the output shaft of the flipping motor.

[0025] The technical effects and advantages of this invention are as follows:

[0026] 1. This invention achieves dual multi-point hydraulic clamping of the rotating shaft by setting multiple sets of clamping seats and pressure seats, all of which are arranged around the outside of the rotating shaft. During the clamping process, the clamping seats and pressure seats apply axial forces in two directions to the rotating shaft, thereby increasing the range of the locking force and improving the rotating shaft's resistance to complex cutting forces from the axial and radial directions during the locking process. This, in turn, improves the locking stability of the machine tool rotating mechanism at multiple angles. At the same time, the multiple sets of clamping seats and pressure seats share a single hydraulic system as a power source, which is easy to control and has high precision, greatly ensuring the stability of the machine tool rotating mechanism after locking after rotation.

[0027] 2. This invention provides a positioning ring and a positioning bearing on the outer side of the rotary shaft. The positioning bearing and the positioning ring work together to ensure that the rotary shaft always rotates around the central axis during rotation, thereby ensuring the machining accuracy of the machine tool. Furthermore, during the clamping process of the rotary shaft, the two ends of the pressure seat press the outer ring of the positioning bearing and the outer side of the positioning ring, respectively. After being pressed, the outer ring of the positioning bearing and the positioning ring can effectively bear the bearing load from the rotary shaft. This ensures the locking stability of the rotary shaft while preventing the positioning bearing from being affected by axial force and thus ensuring the rotation accuracy of the machine tool's rotary mechanism.

[0028] 3. This invention integrates the clamping seat, pressure seat, and bearing seat inside the hydraulic locking seat, and the clamping seat, pressure seat, and bearing seat are arranged horizontally in sequence, making the internal structure of the hydraulic locking seat compact and facilitating the assembly of each component inside the hydraulic locking seat. Furthermore, each component can be pressed and positioned against each other during installation, which facilitates the installation and maintenance of the device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the cradle rotation support structure of the present invention.

[0031] Figure 3 This is a schematic diagram of the rotating shaft structure of the present invention.

[0032] Figure 4 This is an exploded view of the hydraulic locking seat structure of the present invention.

[0033] Figure 5 This is a cross-sectional schematic diagram of the hydraulic locking seat of the present invention.

[0034] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0035] Figure 7 This is a cross-sectional schematic diagram of the hydraulic locking seat structure of the present invention.

[0036] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B.

[0037] Figure 9 This is a schematic diagram of the pressure seat structure of the present invention.

[0038] Figure 10 This is a schematic diagram of the clamp and pressure ring structure of the present invention.

[0039] In the diagram: 1. Support platform; 11. Tilting motor; 2. Cradle rotation support; 21. Rotary shaft; 211. Annular groove; 22. Positioning ring; 23. Positioning bearing; 3. Hydraulic locking seat; 31. Bearing seat; 311. Groove; 32. Clamping seat; 321. Limiting ring; 322. Positioning slide; 323. Tension spring; 33. Pressure ring; 34. Pressure seat; 341. Rounded corner; 342. Frosted disc; 343. Support arm; 344. Transmission arm; 345. Transmission seat; 346. Piston rod; 347. Piston head; 348. Piston chamber; 349. Oil guide chamber; 3491. Connecting groove; 3492. Oil guide groove; 35. Fixed seat; 4. Hydraulic pump station. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 10 As shown, the hydraulic disc locking device for a machine tool rotary mechanism provided by the present invention is essentially a hydraulic disc locking device for a machine tool rotary mechanism that can achieve double clamping of the machine tool rotary mechanism and improve the anti-axial load performance of the machine tool rotary mechanism. By setting multiple sets of clamping seats 32 and pressure seats 34, all of which are arranged around the outside of the rotary shaft 21, a double multi-point hydraulic clamping of the rotary shaft 21 is achieved. In the clamping process, the clamping seats 32 and pressure seats 34 apply axial forces in two directions to the rotary shaft 21, thereby increasing the range of the locking force and improving the resistance of the rotary shaft 21 to complex cutting forces from the axial and radial directions during the locking process. This improves the locking stability of the machine tool rotary mechanism at multiple angles. At the same time, the multiple sets of clamping seats 32 and pressure seats 34 share a hydraulic system as a power source, which is easy to control and has high precision, greatly ensuring the stability of the machine tool rotary mechanism after locking after rotation.

[0042] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0043] In this embodiment, a hydraulic disc locking device for a machine tool rotary mechanism includes:

[0044] A tilting motor 11 is fixedly installed on the support platform 1.

[0045] The cradle slewing support 2 is rotatably mounted above the support platform 1. The end of the cradle slewing support 2 away from the slewing shaft 21 is connected to the output shaft of the flipping motor 11. The slewing shaft 21 is fixedly mounted on one end of the cradle slewing support 2. A positioning ring 22 is provided on the outer end of the slewing shaft 21. A positioning bearing 23 is provided on the outer side of the positioning ring 22.

[0046] An annular groove 211 is provided at one end of the outer side wall of the rotating shaft 21. The positioning ring 22 is located in the annular groove 211. The outer side wall of the positioning ring 22 is interference-fitted with the inner ring of the positioning bearing 23. It should be noted that the positioning ring 22 and the rotating shaft 21 are fixedly connected. To ensure the connection stability between the two, protruding teeth can be milled on the inner side wall of the positioning ring 22, and tooth grooves can be milled on the bottom of the annular groove 211. The above methods are conventional methods in the art and will not be described in detail here.

[0047] The hydraulic locking seat 3 is fixedly mounted on the upper surface of the support 1 and has a through groove in the middle. The hydraulic locking seat 3 has a bearing seat 31 fixedly mounted inside, and the positioning bearing 23 is located inside the bearing seat 31. The hydraulic locking seat 3 has multiple sliding clamps 32 inside, and the multiple clamps 32 are arranged around the outside of the rotating shaft 21. The hydraulic locking seat 3 has a pressure ring 33 that can slide inside, and one end of each clamp 32 slides against the inner wall of the pressure ring 33. The hydraulic locking seat 3 has multiple rotatable pressure seats 34 inside, and each pressure seat 34 is designed with a "<" shape. One end of each pressure seat 34 is against the edge of the outer wall of the positioning bearing 23, and the other end of each pressure seat 34 is against the outer wall of the positioning ring 22.

[0048] Support arm 343 is fixedly mounted in the middle of pressure seat 34;

[0049] The transmission arm 344 is located inside the hydraulic locking seat 3 and one end is movably connected to one end of the support arm 343 via a pin. The other end of the transmission arm 344 is rotatably provided with a transmission seat 345 via a pin. It should be noted that there is a preset included angle between the transmission arm 344 and the support arm 343 to ensure that the top end of the transmission arm 344 can drive the support arm 343 to move when sliding horizontally, thereby driving the pressure seat 34 to flip.

[0050] The piston rod 346 is located inside the hydraulic locking seat 3 and one end is fixedly connected to the outer wall of the pressure ring 33. The middle part of the piston rod 346 is fixedly connected to the transmission seat 345. The piston rod 346 is used to provide the pressure seat 34 with the power to rotate and the pressure ring 33 with the power to slide horizontally.

[0051] Piston head 347 is fixedly mounted on the other end of piston rod 346;

[0052] The piston chamber 348 is located inside the hydraulic locking seat 3, and the piston head 347 is slidably located inside the piston chamber 348.

[0053] The oil guide cavity 349 is designed as an annular structure and is located inside the hydraulic locking seat 3. A connecting groove 3491 is provided between the oil guide cavity 349 and the piston cavity 348. Two oil guide grooves 3492 are provided through the inner sidewall of the oil guide cavity 349.

[0054] The fixed seat 35 is fixedly installed inside the hydraulic locking seat 3. The outer side wall of the pressure seat 34 is movably connected to the outer side wall of the fixed seat 35 via a pin. The fixed seat 35 is used to limit the rotation range of the pressure seat 34. During the rotation of the pressure seat 34, one end remains in contact with the outer side wall of the positioning bearing 23. The end of the pressure seat 34 near the positioning bearing 23 is provided with a rounded corner 341. During the flipping process, the rounded corner 341 remains in contact with the outer ring of the positioning bearing 23 to ensure that the positioning bearing 23 is limited in the groove 311.

[0055] The abrasive plate 342 is fixedly disposed at one end of the pressure seat 34 near the positioning ring 22 and fits against the outer wall of the positioning ring 22. After the pressure seat 34 is flipped, the abrasive plate 342 presses the positioning ring 22 to lock the rotating shaft 21. The abrasive plate 342 can increase the friction between the pressure seat 34 and the positioning ring 22, thereby improving the clamping stability of the pressure seat 34 on the rotating shaft 21.

[0056] The limiting ring 321 is fixedly installed inside the hydraulic locking seat 3. The inner sidewall of the limiting ring 321 is provided with multiple positioning grooves 322. Multiple clamping seats 32 are slidably installed inside the multiple positioning grooves 322. Each clamping seat 32 has an inclined surface at one end near the pressure ring 33. The side of the pressure ring 33 near the clamping seat 32 is provided with an inclined structure. When the pressure ring 33 slides horizontally, it squeezes the clamping seat 32 through the inclined surface, so that the clamping seat 32 clamps the rotating shaft 21. The pressure ring 33 and the clamping seat 32 form a wedge structure. The horizontally sliding pressure ring 33 can provide radial force to the clamping seat 32 through the inclined surface, so that the clamping seat 32 clamps the rotating shaft 21.

[0057] A tension spring 323 is disposed between the clamp 32 and the limiting ring 321. The tension spring 323 is used to provide a force to the clamp 32 away from the rotation shaft 21.

[0058] One end of the bearing housing 31 is provided with a groove 311, the positioning bearing 23 is located in the groove 311, and the outer ring of the positioning bearing 23 is interference-fitted with the groove 311;

[0059] The end of the clamp 32 near the rotating shaft 21 is designed as an arc structure. After being squeezed by the pressure ring 33, multiple clamps 32 slide synchronously towards the rotating shaft 21 to achieve clamping and fixing of the rotating shaft 21.

[0060] The hydraulic pump station 4 is located below the support platform 1. Oil pipe joints are fixedly provided at the openings of the two oil guide grooves 3492. The output end of the hydraulic pump station 4 is connected to the oil pipe joints. The hydraulic pump station 4 is used to output and extract hydraulic oil, thereby realizing the control of the clamp 34 and the pressure seat 32. In this embodiment, the hydraulic pump station 4 adopts the corresponding structure in the prior art and is equipped with a controller and a power source. The output end of the hydraulic pump station 4 is connected to the oil pipe joints through the hydraulic oil pipeline.

[0061] When using the hydraulic plate locking device of the machine tool rotary mechanism in this embodiment, the support 1 can be installed on the machining station of various machine tools such as vertical machining center, horizontal machining center, and five-axis machining center. A fixture can be installed on the top of the cradle rotary support 2 for clamping and fixing the workpiece. During the operation of the machine tool, the tilting motor 11 drives the cradle rotary support 2 to tilt, so as to realize the machining of the workpiece at different angles. During this process, the rotary shaft 21 drives the inner ring of the positioning bearing 23 to rotate, and the positioning bearing 23 ensures the rotation accuracy of the cradle rotary support 2.

[0062] After the cradle slewing support 2 rotates to the machining angle, multiple clamps 32 and pressure seats 34 cooperate to clamp and fix the slewing shaft 21, thereby achieving hydraulic locking of the cradle slewing support 2. During this process, the hydraulic pump station 4 outputs hydraulic oil, which enters the guide oil chamber 349 through the oil pipe and guide oil groove 3492. The hydraulic oil in the guide oil chamber 349 enters the piston chamber 348 through the connecting groove 3491, and pushes the piston head 347 in the piston chamber 348 to slide horizontally. The piston head 347 drives the piston rod 346 to slide horizontally. In the horizontal sliding process, the piston rod 346 drives the pressure ring 33 to slide horizontally. During the horizontal sliding process, the pressure ring 33 squeezes the clamping seat 32 through the inclined surface. Under the action of the inclined wedge, the clamping seat 32 slides along the positioning groove 322 on the inner side of the limiting ring 321. At this time, the clamping seat 32 slides towards the direction of the rotating shaft 21. After the arc-shaped surface at the bottom of the clamping seat 32 is in contact with the outer wall of the rotating shaft 21, it applies pressure to the rotating shaft 21 to achieve clamping and fixing of the rotating shaft 21. During this process, multiple clamping seats 32 achieve multi-point clamping of the rotating shaft 21.

[0063] During the horizontal sliding process, the piston rod 346 drives the top end of the transmission arm 344 to move through the transmission seat 345, causing the top end of the transmission arm 344 to slide horizontally. At this time, the bottom end of the transmission arm 344 pushes the support arm 343, causing the support arm 343 to drive the pressure seat 34 to rotate. The pressure seat 34 rotates around the pin at the connection with the fixed seat 35. At this time, the rounded corner 341 at one end of the pressure seat 34 remains in contact with the outer ring of the positioning bearing 23. The abrasive plate 342 at the other end of the pressure seat 34 follows the pressure seat 34 to flip and then comes into contact with the outer wall of the positioning ring 22. Then the pressure seat 34 presses the positioning ring 22 through the abrasive plate 342. During this process, multiple pressure seats 34 achieve multi-point clamping of the rotating shaft 21.

[0064] During the clamping process of the pressure seat 34 and clamp seat 32, since the movement direction of the pressure ring 33 is opposite to the flipping direction of the pressure seat 34, the clamp seat 32, which is affected by the pressure ring 33, is subjected to an axial force in the direction of the cradle rotary support 2, while the positioning ring 22, which is affected by the pressure seat 34, is subjected to an axial force away from the cradle rotary support 2. Since the source of the two axial forces is the hydraulic oil output by the hydraulic pump station 4, the two axial forces remain balanced. While the pressure seat 34 and clamp seat 32 achieve radial clamping of the rotary shaft 21, they apply two axial forces in opposite directions to the rotary shaft 21. This ensures the locking effect of the rotary shaft 21 and improves the resistance of the rotary shaft 21 to axial forces.

[0065] When the cradle rotary support 2 switches the flip angle, the hydraulic pump station 4 draws hydraulic oil from the guide oil chamber 349 through the oil pipe. At this time, the hydraulic oil in the piston chamber 348 is drawn out. At this time, the piston head 347 slides horizontally to reset under the action of the hydraulic oil, and drives the piston rod 346 to slide horizontally to reset. The piston rod 346 drives the pressure ring 33 to slide horizontally with the top of the transmission arm 344. After the pressure ring 33 slides horizontally to reset, it no longer applies pressure to the clamp 32. At this time, the clamp 32 resets away from the rotary shaft 21 under the action of the tension spring 323 to release the clamping of the rotary shaft 21. At the same time, the transmission arm 344 drives the pressure seat 34 to flip and reset through the support arm 343, so that one end of the pressure seat 34 separates from the positioning ring 22. At this time, the clamping of the positioning ring 22 can be realized. At this time, the limit of the rotary shaft 21 is released. At this time, the flip motor 11 can drive the cradle rotary support 2 to flip to switch the processing direction.

[0066] It should be noted that in this embodiment, the clamp 32, pressure seat 34, bearing seat 31 and other structures are all installed inside the hydraulic locking seat 3. When installing the above structures, the principle of unidirectional step-by-step installation should be followed. First, the bearing seat 31 is installed inside the hydraulic locking seat 3. Then, the fixing seat 35 connected to the pressure seat 34 is installed inside the hydraulic locking seat 3. Finally, the clamp 32 and the limiting ring 321 are installed inside the hydraulic locking seat 3. All the above structures are installed by bolts.

[0067] It should be further explained that the positioning ring 22 in this embodiment is composed of two semicircles. The positioning ring 22 can be spliced ​​in the annular groove 211 and fixed with bolts. After fixing, the positioning ring 22 is locked in the annular groove 211. Then, the positioning bearing 23 can be installed on the outside of the positioning ring 22. When installing the positioning bearing 23, considering that the inner ring of the positioning bearing 23 and the positioning ring 22 are in an interference fit state, appropriate tapping can be performed to ensure the installation effect. After the positioning bearing 23, the positioning ring 22 and the rotating shaft 21 are combined, one end of the rotating shaft 21 can be inserted into the hydraulic locking seat 3, and the positioning bearing 23 is inserted into the groove 311 at one end of the bearing seat 31. After the positioning bearing 23 is in place, the hydraulic pump station 4 can be controlled to output hydraulic oil to push the pressure seat 34 to rotate until the rounded corner 341 at one end of the pressure seat 34 is pressed and fitted with the outer ring of the positioning bearing 23. At this time, the locking of the positioning bearing 23 can be completed, and the assembly of the device can be completed.

[0068] The cradle slewing support 2 and hydraulic locking seat 3 in this embodiment can be applied not only to vertical machining centers, horizontal machining centers, and five-axis machining centers, but also to other machine tools with slewing mechanisms. The accompanying drawings of this embodiment only show the application to vertical machining centers. When applied to different machine tools, the installation position of the support 1 can be adaptively adjusted according to the machining position of the machine tool. This is not limited as long as the normal implementation of this embodiment is guaranteed. The cradle slewing support 2 in this embodiment adopts the corresponding structure in the prior art. It is also equipped with angle sensors, controllers and other structures necessary for operation. All of the above structures adopt the corresponding structures in the prior art, and will not be described in detail here.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic disc locking device for a machine tool rotary mechanism, characterized by, The utility model relates to a kind of cradle rotating support, including: Pile cap (1), its upper fixedly provided with turnover motor (11); Cradle rotating support (2), it is rotatably arranged on the upper of pile cap (1), one end of the cradle rotating support (2) is fixedly provided with rotating shaft (21), the outer side one end of the rotating shaft (21) is provided with positioning ring (22), the outer side of the positioning ring (22) is provided with locating bearing (23); Hydraulic lock seat (3), it is fixedly arranged on the upper surface of pile cap (1) and is provided with through slot in middle part, the inside of the hydraulic lock seat (3) is fixedly provided with bearing seat (31), the locating bearing (23) is located in bearing seat (31), the inside of the hydraulic lock seat (3) is provided with multiple slidable clamping seats (32), and multiple clamping seats (32) are arranged around the outer side of rotating shaft (21), the inside of the hydraulic lock seat (3) is slidably provided with pressure ring (33), one end of multiple clamping seats (32) is slidably attached to the inner wall of pressure ring (33), the inside of the hydraulic lock seat (3) is rotatably provided with multiple pressure seats (34), multiple pressure seats (34) are all provided as "<" shape structure, one end of multiple pressure seats (34) is attached to the outer side wall edge of locating bearing (23), the other end of multiple pressure seats (34) is attached to the outer side wall of positioning ring (22).

2. The hydraulic chuck of claim 1, wherein Further including: Support arm (343), it is fixedly arranged in the middle part of pressure seat (34); Transmission arm (344), it is arranged in the inside of hydraulic lock seat (3) and one end is movably connected with one end of support arm (343) through pin shaft, the other end of the transmission arm (344) is rotatably provided with transmission seat (345) through pin shaft in middle part; Piston rod (346), it is arranged in the inside of hydraulic lock seat (3) and one end is fixedly connected with the outer side wall of pressure ring (33), the middle part of the piston rod (346) is fixedly connected with transmission seat (345), and the piston rod (346) is used to provide overturning power for pressure seat (34) and provide horizontal sliding power for pressure ring (33).

3. A hydraulic chuck apparatus for a machine tool rotary mechanism according to claim 2, wherein Further including: Piston head (347), it is fixedly arranged in the other end of piston rod (346); Piston cavity (348), it is arranged in the inside of hydraulic lock seat (3), the piston head (347) is slidably arranged in the inside of piston cavity (348); Oil guide cavity (349), it is arranged as annular structure and arranged in the inside of hydraulic lock seat (3), the oil guide cavity (349) is provided with communication groove (3491) between the piston cavity (348), the inner side wall of the oil guide cavity (349) is provided with two oil guide grooves (3492).

4. A hydraulic chuck apparatus for a machine tool rotary mechanism according to claim 3, wherein Further including: Fixed seat (35), it is fixedly arranged in the inside of hydraulic lock seat (3), the outer side wall of pressure seat (34) is movably connected with the outer side wall of fixed seat (35) through pin shaft in one end close to locating bearing (23), the fixed seat (35) is used to limit the rotation range of pressure seat (34), one end of the pressure seat (34) remains attached to the outer side wall of locating bearing (23) in the process of rotation, and the one end close to locating bearing (23) of the pressure seat (34) is provided with round corner (341). The grinding sheet (342) is fixed on the pressing base (34) near one end of the positioning ring (22) and is attached to the outer side wall of the positioning ring (22), and the pressing base (34) is turned over to press the positioning ring (22) through the grinding sheet (342) to realize the locking of the rotating shaft (21).

5. The hydraulic chuck apparatus of claim 1, wherein Also includes: The limiting ring (321) is fixedly arranged in the hydraulic locking seat (3), the inner side wall of the limiting ring (321) is surrounded by a plurality of positioning sliding grooves (322), a plurality of clamping bases (32) are slidably arranged in the plurality of positioning sliding grooves (322), and the clamping base (32) is provided with a slope near one end of the clamping base (32). One side of the pressing ring (33) near the clamping base (32) is arranged as an inclined structure, and the pressing ring (33) is horizontally slid to extrude the clamping base (32) through the slope so that the clamping base (32) clamps the rotating shaft (21). The tension spring (323) is arranged between the clamping base (32) and the limiting ring (321), and the tension spring (323) is used to provide an acting force for the clamping base (32) away from the rotating shaft (21).

6. The hydraulic chuck apparatus of claim 1, wherein Also includes: One end of the bearing seat (31) is provided with a groove (311), the positioning bearing (23) is located in the groove (311), and the outer ring of the positioning bearing (23) is connected with the groove (311) in an interference fit.

7. The hydraulic chuck apparatus of claim 1, wherein Also includes: The outer side wall of the rotating shaft (21) is provided with an annular groove (211) at one end, the positioning ring (22) is located in the annular groove (211), and the outer side wall of the positioning ring (22) is connected with the inner ring of the positioning bearing (23) in an interference fit.

8. The hydraulic chuck apparatus of claim 1, wherein, Also includes: The clamping base (32) is arranged as an arc structure near one end of the rotating shaft (21), and a plurality of clamping bases (32) are synchronously slid towards the rotating shaft (21) after being extruded by the pressing ring (33) to realize clamping and fixing of the rotating shaft (21).

9. The hydraulic chuck apparatus of claim 3, wherein, Also includes: The hydraulic pump station (4) is arranged below the bearing platform (1), and the oil pipe joint is fixedly arranged at the slot opening of the two oil guide grooves (3492), and the output end of the hydraulic pump station (4) is connected with the oil pipe joint.

10. The hydraulic chuck apparatus of claim 1, wherein, Also includes: The output shaft of the turnover motor (11) is drivingly connected with one end of the cradle rotary support (2) away from the rotating shaft (21).

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