US4116111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Milling apparatus
Assignee: Gebrueder Heller Maschinenfabrik GmbH
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Filing: 1977-01-18
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Granted: 1978-09-26
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Expires: 1997-01-18
Abstract
Abstract The present milling apparatus is constructed especially for milling crankshafts. A milling unit carrying milling cutters is adjustable on guide rails back and forth toward a workpiece such as a crankshaft. The crankshaft is held in respective chucks also supported on the machine base. Continuously adjustable bracing devices interconnect the milling unit with the workpiece supporting chucks on a side opposite the machine base, whereby undesired vibrations are avoided and the tool life is substantially increased.
Inventors
- 👤 Karlheinz Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
B; B23; B23C; B23C3/00; B23C3/06; B23Q; B23Q1/00; B23Q1/01; B23Q1/015; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/305656; Y10T409/305712; Y10T82/00; Y10T82/19
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A milling apparatus, especially for crankshafts, comprising base means, guide means carried by said base means, a milling unit slidably supported on said guide means, drive means operatively connected to said milling unit for advancing said milling unit back and forth along said guide means, said milling unit including milling cutter arbor means, said apparatus further comprising workpiece chucking means operatively supported on said base means for cooperation with said milling unit, and continuously adjustable bracing means adjustably interconnecting said workpiece chucking means and said milling unit on a side opposite said base means, whereby the instantaneous horizontal spacing between said workpiece chucking means and said milling unit may be maintained substantially rigidly regardless of horizontally effective milling force components.
Claim 2
Dependent Claim
120 words
A milling apparatus, especially for crankshafts, comprising base means, guide means carried by said base means, a milling unit slidably supported on said guide means, drive means operatively connected to said milling unit for advancing said milling unit back and forth along said guide means, said milling unit including milling cutter arbor means, said apparatus further comprising workpiece chucking means operatively supported on said base means for cooperation with said milling unit, and continuously adjustable bracing means adjustably interconnecting said workpiece chucking means and said milling unit on a side opposite said base means, whereby the instantaneous horizontal spacing between said workpiece chucking means and said milling unit may be maintained substantially rigidly regardless of horizontally effective milling force components.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1, wherein said bracing means comprise feed advance means.
Claim 4
Dependent Claim
14 words
The apparatus of claim 2, wherein said feed advance means comprise piston cylinder means.
Claim 5
Dependent Claim
30 words
The apparatus of claim 2, further comprising means operatively connecting said continuously adjustable bracing means to said drive means for adjusting the bracing means in synchronism with said drive means.
Claim 6
Dependent Claim
35 words
The apparatus according to claim 1, further comprising stop means for limiting the feed advance of said milling unit toward said workpiece, said stop means being arranged directly adjacent to said continuously adjustable bracing means.
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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |