Servo press with novel structure

Abstract

The utility model provides a servo press with a novel structure, which relates to the technical field of servo presses and comprises a fixed shell, a planetary roller screw and a piston, an equipment base is arranged at the bottom of the fixed shell, a sensor is arranged at the top of the fixed shell, a bearing seat is arranged at the bottom of the sensor, and a bearing is arranged in the bearing seat. A first guide ring is arranged at the position where the piston is attached to the fixed shell in a sliding mode, the piston is connected with the planetary roller lead screw nut, the size of the servo press adopting the planetary roller lead screw is greatly reduced, installation and arrangement are more convenient, consumption of raw materials is reduced, production cost is reduced, the speed of the servo press is increased while high precision is kept, and the service life of the servo press is prolonged. And the overall production efficiency can be improved by higher press-fitting speed, so that the press-fitting practicability of the servo press is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of servo presses, in particular to a servo press with a new structure. Background Art

[0002] According to a servo press disclosed in Chinese Patent No. CN204936251U, the utility model relates to a servo press, which belongs to a press-fitting device. The servo press includes a servo motor, a planetary roller screw assembly, a piston rod and a pressure sensor. A speed reducer is connected between the servo motor and the planetary roller screw assembly. The output shaft of the servo motor is directly connected to the input shaft of the speed reducer, and the output shaft of the speed reducer is directly connected to the transmission shaft in the planetary roller screw assembly. The utility model replaces the synchronous belt drive used in the parallel shaft type with a specially designed precision parallel helical gear drive. The precision parallel helical gear drive is integrated with the servo press, with precise transmission, smaller external dimensions of the servo press, more compact structure, and more suitable for occasions with high precision requirements and limited installation dimensions.

[0003] The following technical problems exist in the above comparative document and the prior art:

[0004] 1. The existing sensor-integrated servo press uses a ball screw drive, which cannot withstand a high press-fitting speed during the press-fitting process, has large vibration and noise at high speeds. At the same time, due to the load limitation of the ball screw, the design and manufacture of large-load servo presses are very large in volume and very inconvenient to use. Content of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art, and a servo press with a new structure is proposed.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A servo press with a new structure includes a fixed housing, a planetary roller screw and a piston. A device base is provided at the bottom of the fixed housing, a sensor is provided at the top of the fixed housing, a bearing seat is provided at the bottom of the sensor, bearings are installed inside the bearing seat, and the bearing seat is fixed in the force sensing area of the sensor. A first guide ring is provided on one side of the fixed housing, the bearing seat is connected to the planetary roller screw through the bearing, a guide key is provided on one side of the fixed housing, and a keyway is opened at the guide key of the fixed housing, so that the guide key can slide up and down freely.

[0007] Preferably, in the servo press with a new structure of the utility model:

[0008] Preferably, in the servo press with a new structure of the utility model: A guide key is provided on one side of the first piston, a guide ring is provided on one side of the piston, and the piston is connected to the nut on the planetary roller screw.

[0009] Preferably, in the servo press with the new structure of the present utility model: a second guiding ring is provided at the bottom of the planetary roller screw, and the second guiding ring is fixed to the end of the planetary roller screw, and the second guiding ring can slide inside the piston.

[0010] Preferably, in the servo press with the new structure of the present utility model: the second guiding ring and the end of the planetary roller screw are connected by snap connection.

[0011] Preferably, in the servo press with the new structure of the present utility model: synchronous belt wheels are respectively provided at the top of the planetary roller screw and the output shaft of the planetary reducer, and the synchronous belt is attached to the synchronous belt wheels at both places.

[0012] Preferably, in the servo press with the new structure of the present utility model: a planetary reducer and a servo motor are provided on one side of the fixed housing, and the planetary reducer is connected to the fixed housing by positioning connection.

[0013] Beneficial effects

[0014] In the present utility model, the servo press adopting the planetary roller screw greatly reduces the volume, is more convenient for installation and layout, thereby reducing the consumption of raw materials and also reducing the production cost. While maintaining high precision, the speed of the servo press is increased, and the faster pressing speed can improve the overall production efficiency, thereby improving the pressing practicability of the servo press.

[0015] In the present utility model, two-point support for the planetary roller screw is formed by the guiding ring and the bearing, providing more stable support, reducing the vibration and deformation of the screw during operation, contributing to improving the motion precision of the screw, ensuring the processing precision and quality of the press, being able to bear greater loads, adapting to higher requirement processing tasks, reducing the friction between the screw and the supporting components, improving the energy utilization rate, and at the same time reducing the wear of parts and prolonging the service life of the press.

[0016] In the present utility model, a first guiding ring is provided at the upper end of the piston to absorb vibration, and the low-friction performance reduces the measurement error of the sensor. It realizes that the vibration absorbed by the first guiding ring can reduce the vibration during the operation of the equipment, improve the overall stability. At the same time, the low-friction performance can reduce the sensor measurement error, making the measurement result more accurate. Reducing the measurement error helps to more accurately monitor and control the work of the press, improving the reliability of the equipment. Description of the drawings

[0017] Figure 1 is a cross-sectional view of the present utility model;

[0018] Figure 2 is a cross-sectional view of a partial structure of the present utility model;

[0019] Figure 3 is Figure 2 an enlarged view of part A in

[0020] Legend:

[0021] 1. Fixed housing; 2. Piston; 3. Guide key; 4. Planetary roller screw; 5. Bearing; 6. Sensor; 7. Bearing housing; 8. First guide ring; 9. Second guide ring; 10. Nut; 11. Equipment base; 14. High-torque synchronous belt; 15. Servo motor; 16. First synchronous pulley; 17. Second synchronous pulley; 18. Planetary reducer. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0023] The specific embodiments of the present utility model will be described below with reference to the drawings. Specific Embodiment 1:

[0025] Refer to Figures 1-3, A servo press with a new structure, including a fixed housing 1 and a planetary roller screw 4. Both sides of the planetary roller screw 4 are processed with rounded corners. A first synchronous pulley 16 is provided at the top of the planetary roller screw 4. A second synchronous pulley 17 is provided on the output shaft of the planetary reducer 18. And the high-torque synchronous belt 14 is respectively attached to the first synchronous pulley 16 and the second synchronous pulley 17. A device base 11 is provided at the bottom of the fixed housing 1. A guide ring 8 is provided on one side of the piston 2. A guide key is provided on one side of the piston 2. The fixed housing 1 is provided with a keyway at the guide key 3, so that the guide key 3 can slide freely up and down. A sensor 6 is provided at the top of the fixed housing 1. A bearing seat 7 is provided at the bottom of the sensor 6. The bearing seat 7 is fixed in the force sensing area of the sensor 6. The bearing seat 7 is connected to the planetary roller screw 4 through a bearing 5. A first guide ring 8 is provided on one side of the fixed housing 1. A nut 10 is provided on one side of the first guide ring 8. The piston 2 is connected to the nut 10 on the planetary roller screw 4. The piston 2 is attached to the fixed housing 1 through the first guide ring 8. A second guide ring 9 is provided at the bottom of the planetary roller screw 4. The second guide ring 9 is fixed at the end of the planetary roller screw 4. The second guide ring 9 can slide inside the piston 2. And the second guide ring 9 is connected to the planetary roller screw 4 by a snap connection. A servo motor 15 is provided on one side of the fixed housing 1. And the servo motor 15 is connected to the fixed housing 1 by a positioning connection. The upper end of the servo motor 15 is connected to the reducer 18. A high-torque synchronous belt 14 is provided at the top of the planetary roller screw 4. And the high-torque synchronous belt 14 is rigidly connected to the planetary roller screw 4.

[0026] The specific principle is that when the servo motor 15 drives the planetary reducer 18 and further drives the planetary roller screw 4 to rotate, the nut 10 forms a moment due to the circumferential restriction of the guide key 3, thereby driving the nut 10 to move up and down, and further driving the piston 2 to move up and down. The bearing 5 and the guide ring 9 form two-point support for the planetary roller screw, which can further increase the rotational speed of the planetary roller screw 4, further increase the up and down running linear speed of the piston 2. At the same time, because of the two-point support structure, the load capacity of the planetary roller screw 4 is improved. The guide ring 8 has the performance of low friction and vibration absorption, which can effectively reduce the measurement error caused by sliding friction. The outer ring of the sensor 6 is fixed on the housing 1. The bearing seat 7 is fixed in the force sensing area of the sensor 6. The bearing seat 7 is connected to the planetary roller screw 4 through a bearing 5. The piston 2 is connected to the nut 10 on the planetary roller screw 4. The guide key 3 is fixed on the piston 2. The housing 1 is provided with a keyway at the guide key. The guide key 3 can slide freely up and down. The guide ring 8 is fixed on the piston 2. The piston 2 is attached to the housing 1 through the guide ring 8 and can also slide freely up and down. The guide ring 9 is fixed at the end of the planetary roller screw 4. The guide ring 9 can slide inside the piston 2 Specific Embodiment Two:

[0028] Refer to Figures 1-3, a displacement sensor is installed on one side of the planetary roller screw 4, so that during use, the displacement of the press can be accurately measured through the installed displacement sensor, ensuring the accuracy of processing. It can also provide real-time feedback of displacement information, facilitating timely adjustment of the position, providing key data for automated production, and enabling the press to make adaptive adjustments according to the characteristics of the workpiece.

[0029] In summary:

[0030] 1. The servo press using the planetary roller screw 4 greatly reduces the volume, making it more convenient for installation and layout, thus reducing the consumption of raw materials and lowering the production cost. While maintaining high precision, it improves the speed of the servo press, and the faster pressing speed can enhance the overall production efficiency, thereby improving the pressing practicability of the servo press;

[0031] 2. Adopting two-point support for the planetary roller screw 4 by the guide ring and the bearing realizes more stable support, reduces the vibration and deformation of the screw during operation, helps improve the motion accuracy of the planetary roller screw 4, ensures the processing accuracy and quality of the press, can bear greater loads, adapts to higher requirements of processing tasks, reduces the friction between the planetary roller screw 4 and the support components, improves the energy utilization rate, and also reduces the wear of parts, extending the service life of the press;

[0032] 3. Installing a first guide ring 8 on one side of the fixed housing 1 to absorb vibration and the low-friction performance reduces the measurement error of the sensor. When the first guide ring 8 absorbs vibration, it can reduce the vibration during equipment operation, improving the overall stability. At the same time, the low-friction performance can reduce the measurement error of the sensor, making the measurement result more accurate. Reducing the measurement error helps to more accurately monitor and control the operation of the press, enhancing the reliability of the equipment.

[0033] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0034] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A servo press with a new structure, comprising a fixed housing (1), a planetary roller screw (4) and a piston (2), characterized in that: The bottom of the fixed shell (1) is provided with a device base (11), the top of the fixed shell (1) is provided with a sensor (6), the bottom of the sensor (6) is provided with a bearing seat (7), the interior of the bearing seat (7) is provided with a bearing (5), the bearing seat (7) is fixed in the force sensing area of ​​the sensor (6), one side of the piston (2) is provided with a first guide ring (8), the bearing seat (7) is connected to the planetary roller screw (4) through the bearing (5), one side of the piston (2) is provided with a guide key (3), and the fixed shell (1) is provided with a keyway at the guide key (3), so that the guide key (3) can slide freely up and down.

2. According to the new structure of the servo press according to claim 1, it is characterized in that: Both sides of the planetary roller screw (4) are rounded.

3. According to the new structure of the servo press machine of claim 1, it is characterized by: The piston (2) is connected to a nut (10) on a planetary roller screw (4), and the piston (2) is fitted to a fixed housing (1) via a first guide ring (8).

4. According to the new structure of the servo press of claim 3, it is characterized in that: A second guide ring (9) is provided at the bottom of the planetary roller screw (4), and the second guide ring (9) is fixed to the end of the planetary roller screw (4). The second guide ring (9) can slide inside the piston (2).

5. According to the new structure of the servo press machine of claim 4, it is characterized in that: The second guide ring (9) is connected to the end of the planetary roller screw (4) by means of a buckle.

6. The servo press of a new structure according to claim 1 is characterized in that: A first synchronous pulley (16) is provided on the top of the planetary roller screw (4), and the first synchronous pulley (16) and the planetary roller screw (4) are rigidly connected.

7. A servo press with a new structure according to claim 6, characterized in that: A reducer (18) is provided on one side of the fixed housing (1), and the reducer (18) and the fixed housing (1) are connected in a positioning manner.

8. The servo press of a new structure according to claim 7 is characterized in that: A servo motor (15) is provided on one side of the fixed housing (1), the upper end of the servo motor (15) is connected to a reducer (18), and the output shaft of the reducer (18) is provided with a second synchronous pulley (17), which is respectively fitted with the first synchronous pulley (16) and the second synchronous pulley (17) through a synchronous belt (14).

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