Hydraulic press for precision numerical control equipment

Abstract

The utility model relates to oil press technical field especially relates to a kind of oil press for precision numerical control equipment, including machine body, machine body is equipped with oil cylinder, the drive end of oil cylinder is equipped with piston rod, the drive end of piston rod is equipped with moving plate, moving plate is equipped with connecting column, connecting column top is equipped with limit stop;Machine body is also provided with limit stop device, limit stop device includes gear ring and the guide column for the longitudinal movement of gear ring, gear ring is rotatably set in guide column;When the piston rod of oil cylinder does telescopic motion, its drive end will move longitudinally, moving plate installed in drive end will move accordingly, when moving plate moves longitudinally, limit stop connected by connecting column will move longitudinally accordingly;Gear ring below limit stop will cooperate with limit stop stop to limit the longitudinal movement stroke of limit stop;The height is adjusted using the mode of mechanical limit, effectively solve the case of larger error and unstable performance due to oil temperature change and magnetic field interference.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic press technology, and in particular to a hydraulic press for precision CNC equipment. Background Technology

[0002] A hydraulic press is a type of machine that uses special hydraulic oil as its working medium and a hydraulic pump as its power source. The pump forces the hydraulic oil through hydraulic lines into the cylinder. Inside the cylinder, there are several sets of interlocking seals. Finally, a one-way valve causes the hydraulic oil to circulate in the oil tank, which in turn causes the cylinder to perform work, thus completing a certain mechanical action as a productive force.

[0003] Existing CNC hydraulic presses simply use analog signals to control proportional flow valves and proportional pressure valves to achieve the machine's stroke and pressure positioning. This control method will produce large errors due to changes in the machine's oil temperature and magnetic field interference inside the electrical box, resulting in a high rate of defective products during the production process. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic press for precision CNC equipment, addressing the shortcomings of existing technologies.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A hydraulic press for precision CNC equipment includes a machine body, a hydraulic cylinder mounted on the machine body, a piston rod mounted on the drive end of the hydraulic cylinder, a movable plate mounted on the drive end of the piston rod, a connecting column mounted on the movable plate, and a limit plate mounted on the top of the connecting column; the machine body is also provided with a limit device, the limit device including a gear ring and a guide column for longitudinal movement of the gear ring, the gear ring being rotatably fitted on the guide column, and the gear ring being longitudinally aligned with the limit plate.

[0007] Furthermore, the machine body is also equipped with a drive wheel that is connected to the gear ring drive. The length of the drive wheel is greater than that of the gear ring, and the drive wheel meshes with the gear ring for transmission.

[0008] Furthermore: the inner ring of the gear ring is formed with an internal thread structure, and the guide post is formed with an external thread structure that is connected to the internal thread structure of the gear ring for transmission.

[0009] Furthermore: the machine body is provided with a drive mounting plate, the drive mounting plate extends outward, the drive mounting plate is equipped with a longitudinally arranged servo motor, the drive end of the servo motor is equipped with a first synchronous pulley, the bottom of the drive pulley is equipped with a second synchronous pulley that is laterally aligned with the first synchronous pulley, and a synchronous belt is sleeved between the first synchronous pulley and the second synchronous pulley.

[0010] Furthermore: the drive mounting plate is formed with a concave drive hole, in which a longitudinally arranged drive shaft is installed, the second synchronous pulley is sleeved on the drive shaft, and the drive pulley is installed on the top of the drive shaft.

[0011] Furthermore, the drive mounting plate is also equipped with a displacement sensor, which moves longitudinally and is connected to the servo motor signal.

[0012] Furthermore: The drive mounting plate is equipped with longitudinally arranged linear guides and linear modules. The drive end of the linear module is equipped with a linear slide seat, which slides in conjunction with the linear guides. The displacement sensor is mounted on the linear slide seat.

[0013] Furthermore: There are two connecting columns, which are longitudinally connected to both ends of the movable plate. The drive mounting plate is formed with limiting moving holes aligned with the longitudinal direction of the connecting columns. Moving guide sleeves are installed in the limiting moving holes and slide with the connecting columns.

[0014] Furthermore: the bottom of the limiting plate is formed with multiple elastic grooves, and multiple longitudinally arranged compression springs are installed in the elastic grooves. A buffer plate is installed at the bottom of the compression springs, and the bottom of the buffer plate is in elastic contact with the top surface of the gear ring.

[0015] The beneficial effects of this utility model are as follows: When the piston rod of the hydraulic cylinder performs telescopic movement, its driving end will move longitudinally, and the moving plate installed on the driving end will move accordingly. When the moving plate moves longitudinally, the limiting plate connected by the connecting column will move longitudinally accordingly. The gear ring located below the limiting plate will cooperate with the stop of the limiting plate to limit the longitudinal movement stroke of the limiting plate. Since the gear ring moves longitudinally along the guide column, the height is adjusted by mechanical limiting, which effectively solves the problem of large errors and unstable performance caused by oil temperature changes and magnetic field interference. Attached Figure Description

[0016] Fig. 1 This is a side view of the hydraulic press.

[0017] Fig. 2 This is a schematic diagram of the structure viewed from the front.

[0018] The reference numerals in the figures include:

[0019] 1-body,

[0020] 11-Hydraulic cylinder, 12-Piston rod, 13-Drive block, 14-Moving plate, 15-Connecting column, 16-Limit plate, 17-Elastic groove, 18-Compression spring, 19-Buffer plate

[0021] 2-Driver mounting plate,

[0022] 21-Servo motor, 22-First synchronous pulley, 23-Second synchronous pulley, 24-Synchronous belt, 25-Drive hole, 26-Drive shaft, 27-Drive pulley

[0023] 3-Guide post,

[0024] 31-Gear ring, 32-Internal thread structure, 33-Limiting and moving hole, 34-Moving guide sleeve,

[0025] 35-Linear guide rail, 36-Linear module, 37-Linear slide block, 38-Displacement sensor. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] like Figs. 1-2 As shown, a hydraulic press for precision CNC equipment includes a body 1, a hydraulic cylinder 11 mounted on the body 1, a piston rod 12 mounted on the driving end of the hydraulic cylinder 11, a driving block 13 mounted on the driving end of the piston rod 12, a moving plate 14 mounted on the driving block 13, a connecting column 15 mounted on the moving plate 14, and a limiting plate 16 mounted on the top of the connecting column 15; the body 1 is also provided with a limiting device, which includes a gear ring 31 and a guide column 3 for longitudinal movement of the gear ring 31, the gear ring 31 is rotatably fitted on the guide column 3, and the gear ring 31 is longitudinally aligned with the limiting plate 16.

[0028] When the piston rod 12 of the hydraulic cylinder 11 extends and retracts, its driving end moves longitudinally, and the moving plate 14 installed on the driving end moves accordingly. When the moving plate 14 moves longitudinally, the limiting plate 16 connected by the connecting column 15 moves longitudinally accordingly. The gear ring 31 located below the limiting plate 16 will cooperate with the stop of the limiting plate 16 to limit the longitudinal movement stroke of the limiting plate 16. Since the gear ring 31 moves longitudinally along the guide column 3, the height is adjusted by mechanical limiting, which effectively solves the problem of large errors and unstable performance caused by oil temperature changes and magnetic field interference.

[0029] The body 1 is also equipped with a drive wheel 27 that is connected to the gear ring 31. The length of the drive wheel 27 is greater than that of the gear ring 31. The drive wheel 27 meshes with the gear ring 31 for transmission. When the height of the gear ring 31 changes, since the length of the drive wheel 27 is much greater than that of the gear ring 31, the gear ring 31 can maintain meshing with the drive wheel 27 at different heights. That is, when the drive wheel 27 rotates, the gear ring 31 rotates synchronously.

[0030] Specifically, the inner ring of the gear ring 31 has an internal thread structure 32, and the guide post 3 has an external thread structure that is connected to the internal thread structure 32 of the gear ring 31. When the drive wheel 27 rotates, the gear ring 31 rotates synchronously. The gear ring 31 will engage with the external thread structure of the guide post 3 through its internal thread structure 32. The gear ring 31 will move longitudinally along the length of the guide post 3 to adjust the height of the gear ring 31, thereby adjusting the distance from the limiting plate 16 and adjusting the travel of the limiting plate 16.

[0031] The machine body 1 is provided with a drive mounting plate 2, a part of which extends outward. A longitudinally arranged servo motor 21 is mounted on the drive mounting plate 2. A first synchronous pulley 22 is mounted on the drive end of the servo motor 21. A second synchronous pulley 23, which is laterally aligned with the first synchronous pulley 22, is mounted on the bottom of the drive pulley 27. A synchronous belt 24 is sleeved between the first synchronous pulley 22 and the second synchronous pulley 23. Under the transmission connection of the first synchronous pulley 22, the second synchronous pulley 23 and the synchronous belt 24, the servo motor 21 can drive the drive pulley 27 to rotate, thereby realizing the height adjustment of the gear ring 31. The servo motor 21 has forward and reverse rotation functions, and the forward and reverse rotation is adjustable.

[0032] Furthermore, the drive mounting plate 2 is formed with a concave drive hole 25, in which a longitudinally arranged drive shaft 26 is installed. The second synchronous wheel 23 is sleeved on the drive shaft 26, and the drive wheel 27 is installed on the top of the drive shaft 26. When the second synchronous wheel 23 rotates, the drive shaft 26 rotates synchronously. The drive wheel 27 located on the top of the rotating shaft meshes with the gear ring 31 to achieve meshing transmission of the gear ring 31.

[0033] The drive mounting plate 2 is also equipped with a displacement sensor 38. The displacement sensor 38 moves longitudinally and is signal-connected to the servo motor 21. The drive mounting plate 2 is equipped with a longitudinally arranged linear guide rail 35 and a linear module 36. A linear slide seat 37 is mounted on the drive end of the linear module 36, and the linear slide seat 37 slides with the linear guide rail 35. The displacement sensor 38 is mounted on the linear slide seat 37. In this embodiment, the displacement sensor 38 and the servo motor 21 are signal-connected through a control board. By comparing the input data with the feedback signal from the displacement sensor 38, the servo motor 21 drives the gear ring 31 to achieve the preset downward position. That is, the height of the displacement sensor 38 is moved by the linear module 36. The linear module 36 can adjust the height of the gear ring 31 by the number of rotations of the servo motor 21 through signal conversion.

[0034] Furthermore, there are two connecting posts 15, which are longitudinally connected to both ends of the movable plate 14. The drive mounting plate 2 is formed with limiting moving holes 33 aligned longitudinally with the connecting posts 15. A moving guide sleeve 34 is installed in the limiting moving hole 33, and the moving guide sleeve 34 slides in engagement with the connecting post 15. When the connecting post 15 moves longitudinally, it slides in engagement with the limiting moving hole 33 of the drive mounting plate 2 to achieve longitudinal guiding movement.

[0035] Furthermore, the bottom of the limiting plate 16 is formed with multiple elastic grooves 17, and multiple longitudinally arranged compression springs 18 are installed in the elastic grooves 17. A buffer plate 19 is installed at the bottom of the compression springs 18, and the bottom of the buffer plate 19 is in elastic contact with the top surface of the gear ring 31. When the limiting plate 16 approaches the gear ring 31, it contacts the gear ring 31 through the buffer plate 19 connected to the compression springs 18, thereby stopping the gear ring 31 against the limiting plate 16 and limiting the longitudinal movement of the limiting plate 16.

[0036] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A hydraulic press for precision CNC equipment, comprising a machine body, a hydraulic cylinder mounted on the machine body, a piston rod mounted on the driving end of the hydraulic cylinder, and a movable plate mounted on the driving end of the piston rod, characterized in that: The movable plate is equipped with a connecting column, and a limit plate is installed on the top of the connecting column; the machine body is also equipped with a limit device, which includes a gear ring and a guide column for longitudinal movement of the gear ring. The gear ring is rotatably fitted on the guide column, and the gear ring is longitudinally aligned with the limit plate. The bottom of the limiting plate is formed with multiple elastic grooves, and multiple longitudinally arranged compression springs are installed in the elastic grooves. A buffer plate is installed at the bottom of the compression springs, and the bottom of the buffer plate is in elastic contact with the top surface of the gear ring.

2. The hydraulic press for precision CNC equipment according to claim 1, characterized in that: The machine body is also equipped with a drive wheel that is connected to the gear ring drive. The length of the drive wheel is greater than that of the gear ring, and the drive wheel meshes with the gear ring for transmission.

3. A hydraulic press for precision CNC equipment according to claim 2, characterized in that: The gear ring has an internal thread structure formed on its inner ring, and the guide post has an external thread structure that is connected to the internal thread structure of the gear ring for transmission.

4. A hydraulic press for precision CNC equipment according to claim 3, characterized in that: The machine body is provided with a drive mounting plate, which extends outward and is equipped with a longitudinally arranged servo motor. A first synchronous pulley is installed at the drive end of the servo motor, and a second synchronous pulley is installed at the bottom of the drive pulley, which is laterally aligned with the first synchronous pulley. A synchronous belt is sleeved between the first and second synchronous pulleys.

5. A hydraulic press for precision CNC equipment according to claim 4, characterized in that: The drive mounting plate is formed with a concave drive hole, in which a longitudinally arranged drive shaft is installed. The second synchronous pulley is sleeved on the drive shaft, and the drive pulley is installed on the top of the drive shaft.

6. A hydraulic press for precision CNC equipment according to claim 5, characterized in that: The drive mounting plate is also equipped with a displacement sensor, which moves longitudinally and is connected to the servo motor signal.

7. A hydraulic press for precision CNC equipment according to claim 6, characterized in that: The drive mounting plate is equipped with a longitudinally arranged linear guide rail and a linear module. The drive end of the linear module is equipped with a linear sliding seat, which slides in conjunction with the linear guide rail. The displacement sensor is mounted on the linear sliding seat.

8. A hydraulic press for precision CNC equipment according to claim 7, characterized in that: There are two connecting columns, which are longitudinally connected to both ends of the movable plate. The drive mounting plate is formed with a limiting moving hole aligned with the longitudinal direction of the connecting column. A moving guide sleeve is installed in the limiting moving hole, and the moving guide sleeve slides in cooperation with the connecting column.

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