GB825144A - Improvements in apparatus for cutting metal workpieces by electro-erosion - Google Patents
Improvements in apparatus for cutting metal workpieces by electro-erosionInfo
- Publication number
- GB825144A GB825144A GB27161/56A GB2716156A GB825144A GB 825144 A GB825144 A GB 825144A GB 27161/56 A GB27161/56 A GB 27161/56A GB 2716156 A GB2716156 A GB 2716156A GB 825144 A GB825144 A GB 825144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- workpiece
- current
- spring
- coil
- 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
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/013—Control or regulation of feed movement
-
- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
- B23H7/30—Moving electrode in the feed direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
825,144. Cutting by spark discharge. VYZKUMNY USTAV PRE MECHANIZACIU A AUTOMATIZACIU. Sept. 5, 1956 [Sept. 15, 1955], No. 27161/56. Class 83 (4). [Also in Group XXXV] An electro-erosion apparatus comprises a cutting electrode I which is pressed towards the workpiece O to be cut by a force produced by an electromagnetic system B, T connected in parallel with the arc gap A. Current is supplied to the electrode and workpiece through a variable resistance R from a direct-current generator G having a sloping characteristic. The electromagnet comprises a fixed coil B, Fig. 2, and a moving coil T connected to the tool holder V; alternatively the moving coil may be connected to the workpiece. Both coils are connected in parallel with the spark gap, Fig. 1, the coil T being in series with a variable resistance P. When the current is switched on, the electromagnet pushes the saw electrode into contact with the workpiece but immediately the arc A is established, the voltage of the generator G drops thereby reducing the current passing through the coils B, T and reducing the force on the electrode to that required for correct operation. A spring Z biases the electrode away from the workpiece and if a short circuit occurs across the arc, the generator voltage drops which reduces the force on the electromagnets whereby the spring Z pulls the electrode away from the workpiece. The electrode may comprise a rotating disc or an endless moving band or wire. Instead of the spring Z, gravity or a pressure medium may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS347912X | 1955-09-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB825144A true GB825144A (en) | 1959-12-09 |
Family
ID=5452359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27161/56A Expired GB825144A (en) | 1955-09-15 | 1956-09-05 | Improvements in apparatus for cutting metal workpieces by electro-erosion |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH347912A (en) |
| GB (1) | GB825144A (en) |
| NL (2) | NL102105C (en) |
-
0
- NL NL210428D patent/NL210428A/xx unknown
- NL NL102105D patent/NL102105C/xx active
-
1956
- 1956-09-03 CH CH347912D patent/CH347912A/en unknown
- 1956-09-05 GB GB27161/56A patent/GB825144A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH347912A (en) | 1960-07-31 |
| NL210428A (en) | |
| NL102105C (en) |
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