Electrolytic machining system and method

Abstract

An electrolytic machining system includes a controller, a feeding device coupled to the controller, a platform coupled to the controller and positioned opposite the feeding device, an electrolysis cell installed on the platform and configured to receive a workpiece, a cathode coupled to the drive member, a power supply module electrically coupled to the controller and the cathode, a processing tank communicating with the electrolysis cell, a pump communicating with the processing tank, and an electro-hydraulic servo valve communicating with the pump and the cathode and coupled to the controller. The controller can control the feeding device to translate in a direction toward and away from the workpiece in a processing gap, simultaneously control the electro-hydraulic servo valve to adjust a flux of the electrolytes passing through the electro-hydraulic servo valve to enable the electrolytes received in a machining area of the workpiece to have a stable hydraulic pressure.

What is claimed is: 
     
         1 . An electrolytic machining system comprising:
 a controller;   a feeding device coupled to the controller;   a platform coupled to the controller and positioned opposite the feeding device;   an electrolysis cell installed on the platform and configured to receive a workpiece used as an anode;   a cathode coupled to the feeding device, wherein the feeding device is configured to translate the cathode in a direction toward and away from the workpiece in an initialization processing gap;   a power supply module electrically coupled to the controller and the cathode, wherein the power supply module is configured to electrically coupled to the workpiece;   a processing tank communicating with the electrolysis cell and configured to store a plurality of electrolytes;   a pump communicating with the processing tank and configured to pump the stored electrolytes out of the processing tank;   an electro-hydraulic servo valve communicating with the pump and the cathode, and electrically coupled to the controller, wherein the electro-hydraulic servo valve is configured to adjust a flux of the electrolytes passing through the electro-hydraulic servo valve;   wherein the controller is configured to control the electro-hydraulic servo valve to be opened at a predetermined injection frequency, and adjust the flux to a predetermined injection flux during translation of the cathode with respect to the workpiece, so as to enable the electrolytes received in a machining area of the workpiece to have a stable hydraulic pressure while the cathode is moving in the initialization processing gap.   
     
     
         2 . The electrolytic machining system of  claim 1 , wherein the electrolytic machining system further comprises a fixture coupled to the feeding device and configured to receive the cathode. 
     
     
         3 . The electrolytic machining system of  claim 1 , wherein the electrolytic machining system further comprises a drive member coupled to the controller, the feeding device and the platform are coupled to the drive member, and the drive member is configured to drive the first drive and the platform to move. 
     
     
         4 . The electrolytic machining system of  claim 1 , wherein the electrolytic machining system further comprises a reservoir communicating with the pump and the electro-hydraulic servo valve, the reservoir is configured to store the electrolytes transporting from the pump. 
     
     
         5 . The electrolytic machining system of  claim 1 , wherein the power supply module comprises a pulse power supply electrically coupled to the controller and the cathode, the pulse power supply is configured to covert a voltage transporting from the controller to a pulse voltage. 
     
     
         6 . The electrolytic machining system of  claim 1 , wherein the power supply module further comprises a current sensor electrically coupled to the controller and a wire which is coupled to the pulse power supply and the cathode, the current sensor is configured to detect and feedback a current pulse to the controller. 
     
     
         7 . The electrolytic machining system of  claim 1 , wherein the electrolysis cell defines an opening toward the feeding device, the opening is configured to receive the workpiece. 
     
     
         8 . A method for electrolytic machining of a workpiece, the method comprising:
 setting an initialization processing gap, a processing voltage, a predetermined injection frequency of electrolytes, and a predetermined injection flux of electrolytes in a controller;   installing a workpiece in an electrolysis cell, and positioning the workpiece by driving a platform to move the electrolysis cell;   positioning the workpiece in the initialization processing gap by driving a feeding device;   providing a plurality of electrolytes to an electro-hydraulic servo valve and a cathode by a pump;   translating the cathode in the direction toward and away from the workpiece in the processing gap to machine the workpiece, simultaneously controlling the electro-hydraulic servo valve to enable the electrolytes to flow into the cathode at the initialization predetermined injection frequency and flux.   
     
     
         9 . The method of  claim 8 , wherein the method further comprises providing a pulse power supply to the cathode and the workpiece. 
     
     
         10 . The method of  claim 8 , wherein when the cathode moves toward the workpiece, the controller closes the electro-hydraulic servo valve, and a plurality of electrolytes received in a machining area of the workpiece spill into the electrolysis cell, when the cathode moves away from the workpiece, the controller open the electro-hydraulic servo valve, and a lot of electrolytes transporting from the pump pass through the electro-hydraulic servo valve and the cathode to flow into the machining area of the workpiece, wherein a flux of the electrolytes flowing into the cathode the cathode is moving away from the workpiece is twice as much as a flux discharged from the machining area the cathode is moving toward the workpiece, so that the electrolytes received in the machining area have a stable hydraulic pressure. 
     
     
         11 . The method of  claim 8 , wherein the plurality of electrolytes are provide to the electro-hydraulic servo valve and the cathode by a pump and a reservoir communicating with the pump, the reservoir is configured to store the electrolytes transporting from the pump. 
     
     
         12 . The method of  claim 8 , wherein the cathode is translated in the direction toward and away from the workpiece by a drive member coupled to the controller. 
     
     
         13 . The method of  claim 8 , wherein the electro-hydraulic servo valve is controlled to enable the electrolytes to flow into the cathode at the initialization predetermined injection frequency and flux by the controller and a servo controller coupled to the controller.