US3823645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Milling machine
Assignee: Individual
•
Filing: 1973-05-23
•
Granted: 1974-07-16
•
Expires: 1993-05-23
Abstract
Abstract A milling machine is designed for machining the curved surfaces of propelling screws and comprises a turntable with the screw set on it and a fixed gantry along the horizontal guide of which two carriages move to mount bars capable of vertical movement. The lower end face of each bar gets in contact with a vertical cylindrical insert turnable round its axis. The lower end face of the insert is made inclined to the horizontal plane. An overarm is connected to the lower end face of the insert. The longitudinal axis of the overarm is parallel to the lower end face of the insert. A spindle head with a milling cutter held therein is connected to the overarm coaxially to its longitudinal axis. The spindle head is capable of turning round the longitudinal axis. A milling cutter rotation drive is mounted on the overarm.
Inventors
- 👤 I Soloviev
- 👤 I Sukhov
- 👤 N Sjundjukov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/30756; Y10T409/307672; Y10T409/307728
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A milling machine adapted for machining the curved surfaces of propelling screws, comprising: a frame; a frame-mounted turntable on which the screw is set; a gantry fixed to the frame; a horizontal guide arranged in the gantry; at least two carriages moving along the horizontal guide; a bar capable of vertical movement in each of the carriages; a cylindrical insert getting in contact in its vertical position with the lower end face of the bar and capable of turning round its axis, with its lower end being inclined to the horizontal plane; an overarm connected to the lower end of the insert in such a way as to make its longitudinal axis parallel to the lower end face of the insert; a spindle head connected to the overarm coaxially to its longitudinal axis and capable of turning round the said axis; a milling cutter held in the spindle head; an overarm-mounted rotation drive of the milling cutter.
Claim 2
Dependent Claim
157 words
A milling machine adapted for machining the curved surfaces of propelling screws, comprising: a frame; a frame-mounted turntable on which the screw is set; a gantry fixed to the frame; a horizontal guide arranged in the gantry; at least two carriages moving along the horizontal guide; a bar capable of vertical movement in each of the carriages; a cylindrical insert getting in contact in its vertical position with the lower end face of the bar and capable of turning round its axis, with its lower end being inclined to the horizontal plane; an overarm connected to the lower end of the insert in such a way as to make its longitudinal axis parallel to the lower end face of the insert; a spindle head connected to the overarm coaxially to its longitudinal axis and capable of turning round the said axis; a milling cutter held in the spindle head; an overarm-mounted rotation drive of the milling cutter.
Claim 3
Dependent Claim
62 words
A milling machine as claimed in claim 1, in which the overarm is connected to the lower end of the insert in such a way as to change the angle of inclination of the longitudinal axis of the overarm when the insert turns round its axis, with the longitudinal axis of the overarm remaining all the time in the same vertical plane.
Claim 4
Dependent Claim
22 words
A milling machine as claimed in claim 1, in which the overarm is rigidly connected to the lower end of the insert.
Claim 5
Dependent Claim
44 words
A milling machine as claimed in claim 1, in which the overarm is connected to the lower end face of the insert in such a way as to be capable of turning round the axis perpendicular to the lower end face of the insert.
Claim 6
Dependent Claim
76 words
A milling machine as claimed in claim 1, in which provided in the overarm along its longitudinal axis is a sleeve, connected to the rotation drive, to the front face of which the spindle head is rigidly connected; located in the sleeve is a drive shaft one end of which is kinematically connected to the milling cutter held in the spindle head, while the other one, to the milling cutter rotation drive mounted on the overarm.
Claim 7
Dependent Claim
39 words
A milling machine as claimed in claim 1, in which the milling cutter is held in the spindle head in such a manner that the axis of its rotation is perpendicular to the longitudinal axis of the spindle head.
Claim 8
Dependent Claim
39 words
A milling machine as claimed in claim 1, in which the milling cutter is held in the spindle head in such a manner that the axis of its rotation is parallel to the longitudinal axis of the spindle head.
References Cited (Backward Citations)
US1077279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |