US4182045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for checking involutes and helix angles of gears
Assignee: Klingelnberg GmbH
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Filing: 1978-05-15
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Granted: 1980-01-08
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Expires: 1998-05-15
Abstract
Abstract A device for checking involutes and helix angles of cylindrical gears by electronically compensating for mechanical errors, which includes a mechanically operating transmission chain, especially a rolling transmission, a sine bar, a sliding block linkage and/or a lever transmission, which transmission chain guides a measuring feeler relative to a gear to be checked on the required reference curve. The device furthermore includes one length pick-up each at both ends of the transmission chain for measuring their respective motions, a computer unit for multiplying the signal of one of the length pick-ups with the put-in rated transmission ratio of the transmission chain and for subtracting the multiplied signal from the signal of the other length pick-up, and also includes a device for subtracting with the proper prefix + or - the thus formed difference signal as correction value from the measured value of the measuring feeler.
Inventors
- 👤 Manfred Bosch
- 👤 Richard Marquardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/283; G01B5/00; G01B5/0002; G01B5/0009
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A device for checking involutes and helix angles of cylindrical gears which includes: means to support a gear to be checked, a measuring feeler for producing a measured value, a mechanically operating transmission chain operable to guide said measuring feeler relative to said gear on a required reference curve, length pick-up means arranged at both ends of said transmission chain and adapted to emit signals representing the motions of linearly movable members at opposite ends of said transmission chain, computing means for multiplying the signal of one of said length pick-up means with the rated put-in transmission ratio of said transmission chain, and for subtracting said multiplied signal from the signal of the other said pick-up means, and means for subtracting with the proper prefix + or - the thus formed difference signal as a correction value from the measured value of said measuring feeler.
Claim 2
Independent Claim
145 words
A device for checking involutes and helix angles of cylindrical gears which includes: means to support a gear to be checked, a measuring feeler for producing a measured value, a mechanically operating transmission chain operable to guide said measuring feeler relative to said gear on a required reference curve, length pick-up means arranged at both ends of said transmission chain and adapted to emit signals representing the motions of linearly movable members at opposite ends of said transmission chain, computing means for multiplying the signal of one of said length pick-up means with the rated put-in transmission ratio of said transmission chain, and for subtracting said multiplied signal from the signal of the other said pick-up means, and means for subtracting with the proper prefix + or - the thus formed difference signal as a correction value from the measured value of said measuring feeler.
Claim 3
Dependent Claim
83 words
A device according to claim 1, in which said gear to be checked is rotatable about its axis, and said transmission chain includes therewith means to support said feeler being moved along proper pattern for making involute and helix angle measurement and said measuring feeler moves rectilinearly, and in which said length pick-up means includes incremental scale bar means for measuring the rotation of said gear, for measuring the feeler movement, for measuring the involute and for measuring the helix angle of tooth.
Claim 4
Dependent Claim
29 words
A device according to claim 2, in which each of said length pick-up means includes an incremental scale bar, a scanning head and a forward and backward counting device.
Claim 5
Dependent Claim
18 words
A device according to claim 2, which includes a forward and backward counting device with said computing means.
Claim 6
Dependent Claim
17 words
A device according to claim 1, which includes an incremental scale bar arranged on a rolling bar.
Claim 7
Dependent Claim
18 words
A device according to claim 5, which includes a forward and backward counting device with said computing means.
Claim 8
Dependent Claim
29 words
A device according to claim 1, in which said gear to be checked is rotatable about its axis, said measuring feeler moving tangentially of said gear for involute checking.
Claim 9
Dependent Claim
32 words
A device according to claim 7, in which said transmission chain includes a rolling disc, a rolling bar, a first slide with a first adjustable sliding block linkage and a second slide.
Claim 10
Dependent Claim
49 words
A device according to claim 8, in which said transmission chain additionally includes a second adjustable sliding block linkage on the second slide and a third slide carrying said measuring feeler, said length pick-up means being arranged at said rolling bar, said second slide and at said third slide.
Claim 11
Dependent Claim
30 words
A device according to claim 1, in which said gear to be checked is rotatable about its axis, said measuring feeler moving parallel to said gear axis for helix checking.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |