GB1169042A - Electrochemical Machining - Google Patents
Electrochemical MachiningInfo
- Publication number
- GB1169042A GB1169042A GB4156466A GB4156466A GB1169042A GB 1169042 A GB1169042 A GB 1169042A GB 4156466 A GB4156466 A GB 4156466A GB 4156466 A GB4156466 A GB 4156466A GB 1169042 A GB1169042 A GB 1169042A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- conductivity
- temperature
- limits
- machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H5/00—Combined machining
- B23H5/12—Working media
Abstract
1,169,042. Electro-chemical machining. ASSOCIATED ENG. Ltd. Sept. 11, 1967 [Sept. 16, 1966, No.41564/66. Heading C7B. [Also in Division G3] In a method of electro-chemical machining, changes in electrolyte composition are compensated by changes in the operating temperature of the electrolyte so as to maintain the conductivity of the electrolyte substantially constant. If the conductivity rises above a desired value the electrolyte is cooled and if the conductivity falls below a desired value the electrolyte is heated. Upper and lower temperature limits may be imposed for maintaining the conductivity at which limits it is arranged that a visible or audible warning is given. At these temperature limits the electrolyte composition may be adjusted automatically or manually by adding water or concentrated electrolyte in order to vary the temperature at which the required conductivity is achieved. The warning signals may be used to stop the machining operation until the electrolyte composition has been adjusted. The temperature limits may be determined by a thermostat, by specific gravity measurements or by continuous monitoring of the chemical composition of the electrolyte. The temperature control may be by a heating and cooling system which (a) is on or off (b) operates such that the rate of heating or cooling is proportional to the error in conductivity or (c) operates in a stepwise fashion as the error in conductivity changes. Alternatively, there may be only a cooling system. In carrying out the method, the workpiece and tool may be maintained in fixed positions or there may be relative advance between them. The applied voltage and the advance rate may be maintained constant or both of these parameters may be varied in accordance with a predetermined programme. Fig. 1 illustrates a method of machining. Fig. 2 (not shown) is a block diagram of conductivity measuring and electrolyte temperature control apparatus wherein one of two spaced coils of a conductivity cell (20) is energised by an oscillator (21). The output from the other coil effects control whereby a water valve (29) or steam valve (30) can be operated to cool or heat the electrolyte. Fig. 3 (not shown) is a block diagram showing an electrical resistance thermometer (40) a temperature indicator controller (41) and a moving coil instrument (42) with a pointer which, when one of the above mentioned temperature limits is reached, engages one of the contacts (44 or 45) to initiate action.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4156466A GB1169042A (en) | 1966-09-16 | 1966-09-16 | Electrochemical Machining |
FR121183A FR1537330A (en) | 1966-09-16 | 1967-09-15 | Electrochemical machining process and apparatus for carrying out this process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4156466A GB1169042A (en) | 1966-09-16 | 1966-09-16 | Electrochemical Machining |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1169042A true GB1169042A (en) | 1969-10-29 |
Family
ID=10420285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4156466A Expired GB1169042A (en) | 1966-09-16 | 1966-09-16 | Electrochemical Machining |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1169042A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007044091A1 (en) * | 2007-09-14 | 2009-03-19 | Extrude Hone Gmbh | Process and device for electrochemical machining |
-
1966
- 1966-09-16 GB GB4156466A patent/GB1169042A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007044091A1 (en) * | 2007-09-14 | 2009-03-19 | Extrude Hone Gmbh | Process and device for electrochemical machining |
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