Rotary servo press

Abstract

The utility model discloses a rotary servo press, which relates to the technical field of servo presses, and adopts the technical scheme that the rotary servo press comprises a cylinder barrel, a torque turning seat is fixed at one end of the cylinder barrel, a coupler seat is fixed at the other end of the cylinder barrel, a ball screw is rotatably connected in the cylinder barrel, and a first servo motor is fixed on the coupler seat; the output end of the first servo motor is fixedly connected with the ball screw, the ball screw is in threaded connection with a lead screw nut, a flange bearing seat is fixed to the lead screw nut, a piston rod coaxial with the ball screw is arranged in the cylinder barrel, one end of the piston rod is rotationally connected with the flange bearing seat through a first bearing, and the other end of the piston rod can extend out of the turning seat along the cylinder barrel. A rotation driving assembly is arranged on the turning seat, a first anti-rotation key is embedded in the outer portion of the flange bearing seat, and a first sliding groove allowing the first anti-rotation key to axially slide is formed in the cylinder barrel. The device has the advantages of being high in use flexibility, convenient and fast to disassemble and assemble and small and compact in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of servo presses, and more specifically, to a rotary servo press. Background Art

[0002] With the rapid development of assembly and manufacturing industries and the continuous improvement of living standards, people's requirements for product quality are constantly increasing, thus putting forward higher requirements for processed and assembled products. For the assembly of many key parts such as bearings, screws, engine tensioners, etc., it is required not only to control the resulting assembly force, but also to control the force and displacement of the assembly process, so higher requirements are put forward for assembly equipment. In the past, the press-fitting of press-fitting equipment was mainly achieved by pneumatic cylinders or hydraulic cylinders. The problem brought by this method is that the press-fitting force changes with the change of air pressure and hydraulic pressure, but the precise control of air pressure and hydraulic pressure is relatively difficult and costly; in addition, the elasticity of compressed gas and the response lag of the hydraulic system make it impossible to accurately control the press-fitting position.

[0003] To solve the above problems, servo presses are currently used for press fitting. Servo presses are also commonly called servo presses. They are presses that use servo control technology to achieve precision control. In some press fitting fields, it is necessary to achieve rotation, extension, or simultaneous extension while rotating. Therefore, it is necessary to design a rotary servo press with rotation and extension functions. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a rotary servo press having the advantages of high flexibility in use, convenient and quick disassembly and assembly, and a small and compact structure.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a rotary servo press comprises a cylinder, one end of the cylinder is fixed with a torque turning seat, the other end of the cylinder is fixed with a coupling seat, a ball screw is rotatably connected in the cylinder, a first servo motor is fixed on the coupling seat, the output end of the first servo motor is fixedly connected to the ball screw through a coupling, a screw nut is threadedly connected to the ball screw, a flange bearing seat is fixed to the end of the screw nut away from the first servo motor, a piston rod is coaxially arranged in the cylinder with the ball screw, one end of the piston rod is rotatably connected to the flange bearing seat through a first bearing, the other end of the piston rod can extend along the cylinder to the outside of the torque turning seat, a rotating drive component is provided on the torque turning seat for allowing the piston rod to extend and drive the piston rod to rotate, a first anti-rotation key is embedded on the outside of the flange bearing seat, and a first slide groove is provided on the cylinder for allowing the first anti-rotation key to slide axially.

[0006] In one of the embodiments, an inner bearing seat is provided in the cylinder, and the ball screw is rotatably connected to the inner bearing seat via a second bearing.

[0007] In one of the embodiments, an anti-collision pad is fixed to one end of the inner bearing seat close to the screw nut, and a pressure sensor is arranged between the other end of the inner bearing seat and the coupling seat.

[0008] In one of the embodiments, a small-diameter connecting portion is provided on the piston rod, the inner ring of the first bearing is sleeved on the small-diameter connecting portion and locked by a locking nut, the outer ring of the first bearing is interference fit with the flange bearing seat, and a bearing locking cover that can block the first bearing in the flange bearing seat is fixed at one end of the flange bearing seat away from the screw nut.

[0009] In one embodiment, an opening is provided on the side wall of the cylinder, the first slide groove is connected to the opening, the first anti-rotation key is connected to the outside of the flange bearing seat through a first bolt, and an anti-rotation cover plate is detachably connected to the cylinder through a second bolt, and the anti-rotation cover plate is suitable for sealing the opening.

[0010] In one embodiment, the rotary drive assembly includes a driving wheel and a copper sleeve rotatably connected to the torque turning seat, a driven wheel is arranged on the outer peripheral wall of the copper sleeve, a synchronous belt is transmission-connected between the driving wheel and the driven wheel, a keyway is arranged between the copper sleeve and the driven wheel, a second anti-rotation key is arranged in the keyway, a third anti-rotation key is fixed on the inner side wall of the copper sleeve, a second slide groove is axially arranged on the piston rod, the third anti-rotation key is slidably adapted to the second slide groove, a second servo motor is fixed on the torque turning seat, and the output end of the second servo motor is fixedly connected to the driving wheel.

[0011] To sum up, the utility model has the following beneficial effects: the utility model realizes high-precision control of the pressing force and displacement through the precise driving of the ball screw by the first servo motor, improves the stability and reliability of the pressing, integrates the rotation and extension functions into one through the setting of the rotary drive component, and realizes the complex action of rotating or extending while rotating during the pressing process through the cooperation of the rotary drive component and the piston rod, which not only improves the flexibility of the pressing equipment, but also expands its application scenarios, and is particularly suitable for key components that require complex assembly actions. Through the modular setting of the cylinder, torque turning seat, coupling seat, and ball screw, it has the advantages of convenient and quick disassembly and assembly, and a small and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a rotary servo press according to an embodiment of the present application;

[0013] Figure 2A cross-sectional view of a rotary servo press according to an embodiment of the present application;

[0014] Figure 3 It is a schematic structural diagram of a bearing locking cover, a flange bearing seat and a locking nut in a rotary servo press according to an embodiment of the present application;

[0015] Figure 4 It is a structural schematic diagram of an anti-rotation cover plate and a first anti-rotation key in a rotary servo press according to an embodiment of the present application;

[0016] Figure 5 It is an exploded view of a rotary drive assembly in a rotary servo press according to an embodiment of the present application.

[0017] In the figure: 1, cylinder; 1a, first slide groove; 1b, opening; 2, first servo motor; 3, torque turning seat; 4, piston rod; 41, small diameter connecting part; 42, second slide groove; 5, rotary drive assembly; 51, second servo motor; 52, driving wheel; 53, driven wheel; 54, copper sleeve; 541, third anti-rotation key; 6, coupling seat; 7, ball screw; 8, flange bearing seat; 9, screw nut; 10, inner bearing seat; 11, second bearing; 12, anti-collision pad; 13, pressure sensor; 14, coupling; 15, first bearing; 16, locking nut; 17, bearing locking cover; 18, first anti-rotation key; 19, anti-rotation cover plate; 20, keyway; 21, second anti-rotation key. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figures 1 to 5As shown, the embodiment of the present application provides a rotary servo press, including a cylinder 1, one end of the cylinder 1 is fixed with a torque turning seat 3, the other end of the cylinder 1 is fixed with a coupling seat 6, a ball screw 7 is rotatably connected in the cylinder 1, a first servo motor 2 is fixed on the coupling seat 6, and the first servo motor 2 can specifically be a reduction servo motor, and the output end of the first servo motor 2 is fixedly connected to the ball screw 7 through a coupling 14. A screw nut 9 is threadedly connected to the ball screw 7, and a flange bearing seat 8 is fixed to the end of the screw nut 9 away from the first servo motor 2. A piston rod 4 is coaxially arranged with the ball screw 7 in the cylinder 1, and one end of the piston rod 4 is rotatably connected to the flange bearing seat 8 through a first bearing 15, and the other end of the piston rod 4 can extend along the cylinder 1 to the outside of the torque turning seat 3. The torque turning seat 3 is provided with a rotation driving assembly 5 which allows the piston rod 4 to extend and drives the piston rod 4 to rotate, the outside of the flange bearing seat 8 is embedded with a first anti-rotation key 18, and the cylinder barrel 1 is provided with a first slide groove 1a which allows the first anti-rotation key 18 to slide axially.

[0020] When the above-mentioned rotary servo press is working, the first servo motor 2 drives the ball screw 7 to rotate, and the rotation of the ball screw 7 drives the screw nut 9 to perform linear motion, and then transmits the linear motion to the piston rod 4 through the flange bearing seat 8 and the second bearing 11. While the piston rod 4 performs linear motion in the cylinder 1, it can also perform rotational motion outside the torque turning seat 3 through the rotary drive assembly 5.

[0021] In the above manner, the precise driving of the ball screw 7 by the first servo motor 2 realizes high-precision control of the pressing force and displacement, improves the stability and reliability of the pressing, and integrates the rotation and extension functions through the setting of the rotating drive component 5. Through the cooperation of the rotating drive component 5 and the piston rod 4, the complex action of rotating or extending while rotating during the pressing process is realized, which not only improves the flexibility of the pressing equipment, but also expands its application scenarios. It is particularly suitable for key components that require complex assembly actions. Through the modular setting of the cylinder 1, the torque turning seat 3, the coupling seat 6, and the ball screw 7, it has the advantages of convenient and quick disassembly and assembly, and a small and compact structure.

[0022] In this embodiment, an inner bearing seat 10 is provided in the cylinder 1, and the ball screw 7 is rotatably connected to the inner bearing seat 10 through the second bearing 11. Specifically, the ball screw 7 is interference fit with the inner ring of the second bearing 11, and the outer ring of the second bearing 11 is interference fit with the inner bearing seat 10.

[0023] In the above manner, the inner bearing seat 10 provides a stable support point for the ball screw 7. Through the precise fit of the second bearing 11, the radial and axial shaking of the ball screw 7 during rotation is effectively reduced, thereby improving the stability and accuracy of rotation.

[0024] In this embodiment, an anti-collision pad 12 is fixed to one end of the inner bearing seat 10 close to the screw nut 9 , and a pressure sensor 13 is arranged between the other end of the inner bearing seat 10 and the coupling seat 6 .

[0025] In the above manner, the provision of the anti-collision pad 12 effectively mitigates the direct impact of the screw nut 9 on the inner bearing seat 10 in extreme positions or sudden situations. This buffering effect can protect key components from damage, extend the service life of the equipment, and reduce vibration and noise caused by impact. The provision of the pressure sensor 13 allows real-time monitoring of the pressure inside the transmission system. Since the ball screw 7 is rotatably connected to the inner bearing seat 10 through the second bearing 11, and the inner bearing seat 10 is against the pressure sensor 13, when the piston rod 4 is compressed, the pressure will be transmitted to the pressure sensor 13 through the ball screw 7 and the inner bearing seat 10. By collecting and analyzing the pressure data, the output force of the first servo motor 2 can be accurately controlled to ensure that the pressure during the press-fitting process is controlled within a predetermined range, which is conducive to improving processing accuracy, reducing the defective rate, and protecting the processed parts from damage caused by excessive pressure.

[0026] In this embodiment, a small-diameter connecting portion 41 is provided on the piston rod 4, the inner ring of the first bearing 15 is sleeved on the small-diameter connecting portion 41 and is locked by a locking nut 16, the outer ring of the first bearing 15 is interference fit with the flange bearing seat 8, and a bearing locking cover 17 that can block the first bearing 15 in the flange bearing seat 8 is fixed at one end of the flange bearing seat 8 away from the screw nut 9.

[0027] In the above manner, by providing a small-diameter connecting portion 41 on the piston rod 4 and sleeve-mounting and locking the inner ring of the first bearing 15 on the small-diameter connecting portion 41, the connection strength between the piston rod 4 and the first bearing 15 is enhanced, and when the first bearing 15 needs to be maintained or replaced, it is only necessary to loosen the locking nut 16 to remove the bearing from the flange bearing seat 8, without the need for complex disassembly of the entire transmission mechanism, thereby reducing maintenance costs. By providing the bearing locking cover 17, the first bearing 15 can be restricted between the bearing locking cover 17 and the screw nut 9, so that the piston rod 4 will not separate from the flange bearing seat 8 during operation.

[0028] In this embodiment, an opening 1b is provided on the side wall of the cylinder 1, the first slide groove 1a is connected to the opening 1b, the first anti-rotation key 18 is connected to the outside of the flange bearing seat 8 through a first bolt, and an anti-rotation cover plate 19 is detachably connected to the cylinder 1 through a second bolt, and the anti-rotation cover plate 19 is suitable for sealing the opening 1b.

[0029] In the above manner, the setting of the opening 1b allows the first anti-rotation key 18 to be conveniently installed on the flange bearing seat 8 and fastened by the first bolt. At the same time, the anti-rotation cover plate 19 is detachably connected to the cylinder 1 by the second bolt, so that the opening 1b can be opened when necessary to inspect, repair or replace the internal components.

[0030] In this embodiment, the rotary drive assembly 5 includes a driving wheel 52 and a copper sleeve 54 rotatably connected to the torque turning seat 3, a driven wheel 53 is arranged on the outer peripheral wall of the copper sleeve 54, a synchronous belt is transmission-connected between the driving wheel 52 and the driven wheel 53, a keyway 20 is arranged between the copper sleeve 54 and the driven wheel 53, a second anti-rotation key 21 is arranged in the keyway 20, a third anti-rotation key 541 is fixed on the inner side wall of the copper sleeve 54, a second slide groove 42 is axially arranged on the piston rod 4, the third anti-rotation key 541 is slidably adapted to the second slide groove 42, a second servo motor 51 is fixed on the torque turning seat 3, and the output end of the second servo motor 51 is fixedly connected to the driving wheel 52.

[0031] When the above-mentioned rotation drive component 5 is working, the second servo motor 51 drives the driving wheel 52 to rotate, and then drives the driven wheel 53 to rotate under the transmission action of the synchronous belt. Under the action of the second anti-rotation key 21, the copper sleeve 54 rotates, and drives the piston rod 4 to rotate under the action of the third anti-rotation key 541. Through the setting of the second slide groove 42, the piston rod 4 can also perform linear telescopic motion during the rotation process.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rotary servo press, comprising a cylinder (1), characterized in that: A torque deflection seat (3) is fixed at one end of the cylinder (1), a coupling seat (6) is fixed at the other end of the cylinder (1), a ball screw (7) is rotatably connected inside the cylinder (1), a first servo motor (2) is fixed on the coupling seat (6), an output end of the first servo motor (2) is fixedly connected to the ball screw (7) via a coupling (14), a screw nut (9) is threadedly connected to the ball screw (7), a flange bearing seat (8) is fixed at one end of the screw nut (9) away from the first servo motor (2), and the cylinder (1) is connected to the ball screw (7). The ball screw (7) is coaxially provided with a piston rod (4), one end of the piston rod (4) is rotatably connected to the flange bearing seat (8) via a first bearing (15), the other end of the piston rod (4) can be extended along the cylinder (1) to the outside of the torque turning seat (3), the torque turning seat (3) is provided with a rotation drive component (5) that can allow the piston rod (4) to extend and drive the piston rod (4) to rotate, the outside of the flange bearing seat (8) is embedded with a first anti-rotation key (18), and the cylinder (1) is provided with a first slide groove (1a) that allows the first anti-rotation key (18) to slide axially.

2. The rotary servo press according to claim 1, characterized in that: An inner bearing seat (10) is arranged in the cylinder (1), and the ball screw (7) is rotatably connected to the inner bearing seat (10) via a second bearing (11).

3. The rotary servo press according to claim 2, characterized in that: An anti-collision pad (12) is fixed to one end of the inner bearing seat (10) close to the screw nut (9), and a pressure sensor (13) is arranged between the other end of the inner bearing seat (10) and the coupling seat (6).

4. The rotary servo press according to claim 1, characterized in that: The piston rod (4) is provided with a small-diameter connecting portion (41), the inner ring of the first bearing (15) is sleeved on the small-diameter connecting portion (41) and is locked by a locking nut (16), the outer ring of the first bearing (15) is interference-fitted with the flange bearing seat (8), and a bearing locking cover (17) is fixed to one end of the flange bearing seat (8) away from the screw nut (9) and capable of blocking the first bearing (15) in the flange bearing seat (8).

5. The rotary servo press according to claim 1, characterized in that: An opening (1b) is provided on the side wall of the cylinder barrel (1), the first slide groove (1a) is connected to the opening (1b), the first anti-rotation key (18) is connected to the outside of the flange bearing seat (8) via a first bolt, and an anti-rotation cover plate (19) is detachably connected to the cylinder barrel (1) via a second bolt, and the anti-rotation cover plate (19) is suitable for sealing the opening (1b).

6. The rotary servo press according to claim 1, characterized in that: The rotary drive assembly (5) comprises a driving wheel (52) and a copper sleeve (54) rotatably connected to the torque turning seat (3); a driven wheel (53) is arranged on the outer peripheral wall of the copper sleeve (54); a synchronous belt is connected between the driving wheel (52) and the driven wheel (53); a keyway (20) is arranged between the copper sleeve (54) and the driven wheel (53); a second anti-rotation key (21) is arranged in the keyway (20); a third anti-rotation key (541) is fixed on the inner side wall of the copper sleeve (54); a second slide groove (42) is axially arranged on the piston rod (4); the third anti-rotation key (541) is slidably matched with the second slide groove (42); a second servo motor (51) is fixed on the torque turning seat (3); and an output end of the second servo motor (51) is fixedly connected to the driving wheel (52).

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