Press machine capable of accurately controlling pressure

Abstract

The utility model discloses a precise pressure control press machine which comprises a servo motor, a controller and a press fitting head, the controller controls the servo motor to rotate and is connected with the press fitting head through a lead screw press fitting rod to achieve press fitting work, a pressure sensor is arranged between the press fitting head and the lead screw press fitting rod, and the pressure sensor is in signal connection with the controller. The controller adjusts the rotating speed and the torque of the servo motor according to pressure data of the pressure sensor. According to the technical scheme that the controller adjusts the rotating speed and the torque of the servo motor according to the pressure data of the pressure sensor, the pressure data generated in the assembling process are monitored in real time, the data are fed back to the controller, and then the controller adjusts the rotating speed and the torque of the servo motor according to signals. Therefore, pressure output in the press fitting process is accurately controlled, the problem that output pressure of a traditional press machine is not accurate is solved, and the machining quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press, especially a press of accurate pressure control. BACKGROUND

[0002] As the core equipment in industrial production, the press is widely used in the precise manufacturing field such as mechanical part assembly, electronic component packaging, bearing press fitting, etc. The traditional press mostly adopts hydraulic drive or pneumatic drive mode, and adjusts the output pressure through overflow valve, proportional valve and other elements. However, such equipment has the following defects in actual application:

[0003] 1. Insufficient pressure control precision: the hydraulic system is easily affected by oil temperature change, sealing element wear and oil leakage, and has large output pressure fluctuation and low precision.

[0004] 2. Poor dynamic response capability: the pressure establishment and release of the hydraulic / pneumatic system need to go through pipeline transmission, valve body action and other links, and cannot be adjusted in real time when the press fitting process is suddenly blocked, which easily causes workpiece overpressure damage.

[0005] 3. Lack of closed-loop feedback mechanism: the existing mechanical press mostly relies on preset stroke or threshold pressure switch control, cannot monitor and correct the pressure-displacement relationship in the press fitting process in real time, and causes low press fitting qualification rate of complex workpieces (such as special-shaped parts and composite materials), which easily causes workpiece damage.

[0006] Therefore, the market needs a press integrating high-precision force control closed loop, real-time dynamic adjustment and multiple safety protection to meet the strict requirements of the precise manufacturing field on the controllability and stability of the press fitting process. UTILITY MODEL CONTENTS

[0007] The utility model discloses a kind of press of accurate pressure control, comprising: servo motor (1), controller (2), press head (3), controller (2) controls servo motor (1) rotation through screw press rod to connect press head (3) and realize press fitting work, pressure sensor (4) is arranged between press head (3) and screw press rod, pressure sensor (4) is connected with controller (2) signal, and controller (2) adjusts the rotational speed and torque of servo motor (1) according to the pressure data of pressure sensor (4).The utility model adjusts the rotational speed and torque of servo motor (1) according to the pressure data of pressure sensor (4) by the technical scheme of controller (2), realizes the pressure data generated in real-time monitoring assembly process, and data is fed back to controller, and controller adjusts the rotational speed and torque of servo motor according to signal, to accurately control the pressure output of press fitting process, solve the problem of inaccurate output pressure of traditional press, improve processing quality.

[0008] To achieve the above object, the utility model adopts the following technical scheme:

[0009] The utility model discloses a precision pressure control press, include: servo motor (1), controller (2), press head (3), and controller (2) controls servo motor (1) rotation through screw press rod and connects press head (3) to realize press -fitting work, and press head (3) is provided with pressure sensor (4) between screw press rod, and pressure sensor (4) is connected with controller (2) signal, and controller (2) adjusts the rotational speed and torque of servo motor (1) according to the pressure data of pressure sensor (4).

[0010] Further setting, servo motor (1) is installed in frame (6), and frame (6) is equipped with guide column (7), and guide column (7) is used to guide the movement direction of press head (3) and screw press rod.

[0011] Further setting, frame (6) is provided with control screen (5), and control screen (5) is connected with controller (2), and control screen (5) is used to input target press -fitting pressure and lifting speed, and controller (2) will adjust the rotational speed and torque of servo motor (1) according to target press -fitting pressure and lifting speed, and controller (2) adjusts the rotational speed and torque of servo motor (1) again according to the pressure data of pressure sensor (4) after press head (3) contacts press -fitting target.

[0012] Further setting, the entrance of frame (6) is provided with safety grating (8), and the press machine normal operation when safety grating (8) does not detect foreign matter, and the press machine shutdown when safety grating (8) detects foreign matter.

[0013] The utility model discloses a precision pressure control press, include: servo motor (1), controller (2), press head (3), and controller (2) controls servo motor (1) rotation through screw press rod and connects press head (3) to realize press -fitting work, and press head (3) is provided with pressure sensor (4) between screw press rod, and pressure sensor (4) is connected with controller (2) signal, and controller (2) adjusts the rotational speed and torque of servo motor (1) according to the pressure data of pressure sensor (4). ACCURACY

[0014] Fig. 1 It is the perspective drawing of the utility model;

[0015] Fig. 2 It is the perspective drawing of the utility model part shell hidden state;

[0016] Fig. 3 It is the perspective drawing of the utility model all shell hidden state;

[0017] Fig. 4 It is the perspective drawing of the utility model part assembly;

[0018] In the figure: servo motor 1, controller 2, press head 3, pressure sensor 4,

[0019] Control screen 5, rack 6, guide column 7, safety grating 8. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0021] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0022] Secondly, the utility model is described in detail in combination with the schematic diagram, when detailing the embodiments of the utility model, for the convenience of illustration, the sectional view of the device mechanism will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0023] In order to make the purposes, technical schemes and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below in combination with the drawings.

[0024] As Figs. 1-4 Indicated: a precise pressure control press, mainly including servo motor (1), controller (2), press head (3), pressure sensor (4), control screen (5), rack (6), guide column (7) and safety grating (8). Among them, servo motor (1) is installed in rack (6), and is connected with press head (3) by using high-speed rotation to drive through screw rod press rod, realizes press action. In order to realize closed loop control, pressure sensor (4) is arranged between press head (3) and screw rod press rod, real-time acquisition of pressure data generated in the press process, and the signal is fed back to controller (2).

[0025] Controller (2) is connected with control screen (5) simultaneously, and the operator can input target press pressure and lifting speed through the screen. After the press is started, controller (2) adjusts the rotating speed and torque of servo motor (1) according to signal data, so that press head (3) moves according to preset parameters. When the press head

[0026] (3) When the press-fit workpiece is contacted, the pressure sensor (4) transmits real-time pressure data back to the controller (2), and the controller (2) further adjusts the motion state of the servo motor (1) according to the feedback signal, so as to ensure that the output pressure is always accurate and stable, thereby avoiding overpressure or insufficient pressure.

[0027] The guide column (7) arranged on the rack (6) can effectively guide the movement direction of the press-fit head (3) and the screw press-fit rod, and ensure that the press-fit process is stable and accurate. The safety grating (8) is installed at the entrance of the rack (6), and when foreign matter is detected, the system automatically stops to ensure the safety of the equipment and the operator.

[0028] Although the utility model has been described above with reference to the embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no mechanism conflict, the features in the embodiments disclosed by the utility model can be combined in any way, and the combinations are not exhaustively described in the specification only for the purpose of omitting the length and saving resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A precision controlled pressure press, comprising: The utility model relates to a servo motor (1), controller (2), press head (3), and the controller (2) controls servo motor (1) rotation through screw press head (3) to connect press head (3) and realize press work, its characterized in that, press head (3) is provided with pressure sensor (4) between screw press head, and pressure sensor (4) is connected with controller (2) signal, and controller (2) adjusts the rotational speed and torque of servo motor (1) according to the pressure data of pressure sensor (4).

2. The precision controlled pressure press of claim 1, wherein, Servo motor (1) is installed in frame (6), and frame (6) is equipped with guide column (7), and guide column (7) is used to guide the movement direction of press head (3) and screw press head.

3. The precision controlled pressure press of claim 2, wherein, Frame (6) is provided with control screen (5), and control screen (5) is connected with controller (2), and control screen (5) is used to input target press pressure and lifting speed, and controller (2) will adjust the rotational speed and torque of servo motor (1) according to target press pressure and lifting speed, and after press head (3) contacts press target, controller (2) adjusts the rotational speed and torque of servo motor (1) again according to the pressure data of pressure sensor (4) again.

4. The precision controlled pressure press of claim 2, wherein, The entrance of frame (6) is provided with safety grating (8), and the press machine works normally when safety grating (8) does not detect foreign matter, and the press machine stops when safety grating (8) detects foreign matter.

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