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An electro-hydraulic servo pressure device
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A technology of pressure device and electro-hydraulic servo, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc. Power adjustment accuracy and other issues
Active Publication Date: 2017-04-12
哈尔滨工江机电科技有限公司
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Problems solved by technology
[0003] The present invention solves the problem that when the existing pressurizing device applies force to the workpiece, firstly, the size of the force cannot be adjusted, and secondly, the adjustment accuracy of the feed force cannot be guaranteed. The problem that the devices are easily damaged, and then an electro-hydraulic servo pressure device is proposed
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specific Embodiment approach 1
[0009] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment. An electro-hydraulic servo pressure device described in this embodiment includes a servo motor 1, a reducer 2, a first cylinder 3, a plunger 4, a lead screw 5, a nut 6, a second cylinder 7, and a piston 8 , oil pipe 11, controller 12, pressure sensor 13, displacement sensor 14, sealing sleeve 20, at least one guide block 9 and at least one guide rail 10, the output shaft of servo motor 1 is connected with one end of lead screw 5 through reducer 2, The other end of the lead screw 5 is inserted in the plunger 4, the screw nut 6 is installed on the lead screw 5, and the screw nut 6 is threaded with the lead screw 5, the screw nut 6 is fixed on the plunger 4, the lead screw 5 and the lead screw 5 are screwed together. The plungers 4 are all arranged in the first oil cylinder 3, at least one guide block 9 is fixed on the side wall of the end of the plunger 4 away from the lead screw 5...
specific Embodiment approach 2
[0013] Specific implementation mode two: combination figure 1 Describe this embodiment, the electro-hydraulic servo pressure device described in this embodiment also includes a signal generating element 15 and two position switches 16, the signal generating element 15 is arranged on the outer wall of the plunger 4, and the upper edge of the first oil cylinder 3 A position switch 16 is respectively provided at both ends of the first oil cylinder 3 in the longitudinal direction. In this way, the two position switches 16 are front and rear extreme position safety switches respectively, the plunger 4 moves to the front end of the first oil cylinder 3, and the position switch 16 receives the signal generating element 15 to send a command signal to make the plunger 4 stop moving forward; When the plunger 4 moves toward the rear end of the first oil cylinder 3, the position switch 16 receives a command signal from the signal generating element 15 to stop the plunger 4 from moving bac...
specific Embodiment approach 3
[0014] Specific implementation mode three: combination figure 1 To illustrate this embodiment, the electro-hydraulic servo pressure device described in this embodiment further includes a spring 17 , and the spring 17 is arranged on the piston rod of the piston 8 . The setting of spring 17 is in order to make piston 8 reset. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.
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PUM
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Abstract
The invention relates to an electro-hydraulic servo pressure device. The problems that when an existing workpiece pressurizing device is used for pressurizing a workpiece, the pressure magnitude cannot be adjusted, the feeding force adjustment precision cannot be ensured, and the workpiece and the pressurizing device are likely to be damaged if the pressurizing force is too large are solved. An output shaft of a servo motor is connected with one end of a lead screw through a speed reducer. The other end of the lead screw is inserted into a plunger. A nut is installed on the lead screw and fixedly installed on the plunger. A first oil cylinder is communicated with a second oil cylinder through an oil pipe. A piston is arranged in the second oil cylinder. A pressure sensor is electrically connected with an oil chamber of the second oil cylinder. A displacement sensor is electrically connected with a piston rod of the piston. The signal output ends of the pressure sensor and the displacement sensor are electrically connected with the signal input end of a controller. The signal output end of the controller is electrically connected with the signal input end of the servo motor. The electro-hydraulic servo pressure device is used for precisely controlling pressure.
Description
technical field [0001] The invention relates to a pressure device, in particular to an electro-hydraulic servo pressure device. Background technique [0002] At present, when applying load to the workpiece, from the control point of view, one is open-loop control, and the other is closed-loop control. The open-loop control workpiece does not feed back force signals, and the closed-loop control workpiece feedback force signals can adjust the size of the added force. The main application is the open-loop control method. When the applied force is too large, the workpiece and the pressurizing device are easily damaged; It is mainly applied in the hydraulic system. After collecting the pressure signal, the opening and closing degree of the valve is adjusted, and the flow is controlled. This method is not accurate, and the structure is complex, prone to failure, and cannot meet the requirements of use. Contents of the invention [0003] The present invention solves the problem ...
Claims
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Application Information
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