US3855442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode supporting cartridge assembly for electrical discharge machining apparatus
Assignee: Raycon Corp
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Filing: 1973-02-13
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Granted: 1974-12-17
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Expires: 1993-02-13
Abstract
Abstract A cartridge assembly for supporting a plurality of substantially parallel electrodes in electrical discharge machining apparatus. The EDM apparatus includes a frame and a carriage mounted on the frame for guided movement in a vertical direction, the cartridge assembly being removably mounted on the carriage so that the electrodes extend vertically. Manually operable gripper means is provided for feeding the electrodes downwardly after each machining operation into engagement with the workpiece so as to compensate for electrode wear experienced during one or more preceding machining operations. Positive stop anti-short power means is combined with the carriage to enable retraction of the electrodes out of engagement with the workpiece into a predetermined spaced relation with the workpiece at least as great as the desired spark gap spacing between the electrodes and the workpiece during machining. The cartridge assembly includes a cartridge member provided with contact blocks connected to a supply of current and engaged with the electrodes during machining.
Inventors
- 👤 J Check
- 👤 G Rupert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:47
CPC Classifications
B; B23; B23H; B23H7/00; B23H7/26; B23H7/265
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
An electrode supporting cartridge assembly for electrical discharge machining apparatus comprising a cartridge member having substantially parallel grooves therein, a plurality of substantially parallel electrodes slidably mounted in a side-byside relation in said grooves, electrode retainer means mounted on said cartridge member and engaged with said electrodes so as to retain said electrodes in said grooves, and electrode guide means located at one end of said cartridge member in close proximity thereto and disposed in a guiding relation with said electrodes.
Claim 2
Dependent Claim
81 words
An electrode supporting cartridge assembly for electrical discharge machining apparatus comprising a cartridge member having substantially parallel grooves therein, a plurality of substantially parallel electrodes slidably mounted in a side-byside relation in said grooves, electrode retainer means mounted on said cartridge member and engaged with said electrodes so as to retain said electrodes in said grooves, and electrode guide means located at one end of said cartridge member in close proximity thereto and disposed in a guiding relation with said electrodes.
Claim 3
Dependent Claim
73 words
A cartridge assembly according to claim 1 further including electrode gripper means disposed between said cartridge member and said guide means, said gripper means comprising gripper block means engaged with said electrodes and guidably mounted for back and forth movement in a direction substantially parallel to said electrodes, and a gripper bar mounted on said gripper block means for movement toward said gripper block means so as to grip the electrodes engaged therewith.
Claim 4
Dependent Claim
58 words
Electrical discharge machining apparatus according to claim 2 further including an electrode clamp bar releasably mounted on said cartridge member at a position between said retainer means and said gripper means, said clamp bar being operable to clamp said electrodes against said cartridge member so as to maintain said electrodes in fixed positions relative to said cartridge member.
Claim 5
Dependent Claim
47 words
Electrical discharge machining apparatus according to claim 3 further including slide pin means guidably supported on said body means and secured to said gripper means for guidably supporting said gripper means during movement thereof, and stop means limiting the extent of movement of said slide pin means.
Claim 6
Dependent Claim
58 words
Electrical discharge machining apparatus according to claim 3 further including a plurality of electrode contact blocks, each of said blocks being formed of an electric current conducting material and projecting into at least one of said grooves into current conducting engagement with at least one of said electrodes, said blocks being in substantial alignment with said clamp bar.
Claim 7
Dependent Claim
116 words
For use with electrical discharge machining apparatus which includes a stationary frame and a carriage movably mounted on said frame, an electrode supporting cartridge assembly comprising a cartridge member mounted on said carriage and having substantially parallel grooves therein, a plurality of substantially parallel electrodes slidably mounted in a side-by-side relation in said grooves, electrode retainer means mounted on said cartridge member and engaged with said electrodes so as to retain said electrodes in said grooves, and electrode guide means located at one end of said cartridge member and disposed in a guiding relation with said electrodes, said guide means being mounted on said stationary frame at a position in close proximity to said cartridge member.
Claim 8
Dependent Claim
116 words
For use with electrical discharge machining apparatus which includes a stationary frame and a carriage movably mounted on said frame, an electrode supporting cartridge assembly comprising a cartridge member mounted on said carriage and having substantially parallel grooves therein, a plurality of substantially parallel electrodes slidably mounted in a side-by-side relation in said grooves, electrode retainer means mounted on said cartridge member and engaged with said electrodes so as to retain said electrodes in said grooves, and electrode guide means located at one end of said cartridge member and disposed in a guiding relation with said electrodes, said guide means being mounted on said stationary frame at a position in close proximity to said cartridge member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |