US3837384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for cutting splines in boards
Assignee: Huebel & Platzer Maschinenbau GmbH
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Filing: 1973-03-26
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Granted: 1974-09-24
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Expires: 1993-03-26
Abstract
Abstract A board is moved along a straight path forming a chord through the circular orbit of a milling head. The relative speeds of the orbiting head and the moving plank are varied with respect to each other such that the vector of the orbiting speed of the head parallel to the plank displacement direction, i.e., the velocity component in this direction is always equal to the velocity of the plank while this head is in contact with a plank end. Thus, splines are cut of equal length and depth. The head can simultaneously cut splines in the trailing end of a leading workpiece and the leading end of a trailing workpiece, and then on the return swing cut splines in the trailing end of the trailing workpiece and in the leading end of the following workpiece. Several such heads may be mounted on a single rotatable carrier. After cutting of the splines the planks are coated on their ends with adhesive and pushed together axially so as to splice them together.
Inventors
- 👤 H Sybertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:35
CPC Classifications
B; B27; B27F; B27F1/00; B27F1/16; B23; B23Q; B23Q7/00; B23Q7/007; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4775; Y10T83/4789
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A method of machining the end of a workpiece comprising the steps of: displacing a tool in an orbit; advancing a workpiece against said tool along a straight path passing as a chord through said orbit; and relatively varying the orbiting speed of said tool and the advance speed of said workpiece upon engagement of the tool therewith such that the velocity vector of the tool in the direction of advance of said workpiece during such engagement is equal to said advance speed.
Claim 2
Independent Claim
83 words
A method of machining the end of a workpiece comprising the steps of: displacing a tool in an orbit; advancing a workpiece against said tool along a straight path passing as a chord through said orbit; and relatively varying the orbiting speed of said tool and the advance speed of said workpiece upon engagement of the tool therewith such that the velocity vector of the tool in the direction of advance of said workpiece during such engagement is equal to said advance speed.
Claim 3
Dependent Claim
21 words
The method defined in claim 1 wherein said orbit is circular and said advance speed of said workpiece is held constant.
Claim 4
Dependent Claim
21 words
The method defined in claim 1 wherein said orbit is circular and said orbiting speed of said tool is held constant.
Claim 5
Dependent Claim
47 words
The method defined in claim 1 wherein said orbit is circular and a succession of such workpieces are displaced along said path at fixed intervals, said tool being brought into engagement simultaneously with the trailing end of one workpiece and the leading end of the following workpiece.
Claim 6
Dependent Claim
38 words
The method defined in claim 1 wherein said orbit is circular and said tool is first brought into engagement with the trailing end of said workpiece and thereafter brought into engagement with the leading end of said workpiece.
Claim 7
Dependent Claim
17 words
The method defined in claim 1, further comprising the step of rotating said tool while orbiting it.
Claim 8
Independent Claim
119 words
An apparatus for machining the end of a workpiece, said apparatus comprising: a carrier rotatable about an axis; a tool supported on said carrier and defining an orbit on rotation thereof; drive means for rotating said carrier about said axis, thereby displacing said tool along said orbit for engagement with said workpiece; transport means for advancing a workpiece against said tool along a straight path passing as a chord through said orbit; and means operatively connecting said drive means and said transport means for relatively varying the orbiting speed of said tool and the advance speed of said workpiece to maintain the velocity vector of said tool parallel to said path during such engagement equal to said advance speed.
Claim 9
Independent Claim
119 words
An apparatus for machining the end of a workpiece, said apparatus comprising: a carrier rotatable about an axis; a tool supported on said carrier and defining an orbit on rotation thereof; drive means for rotating said carrier about said axis, thereby displacing said tool along said orbit for engagement with said workpiece; transport means for advancing a workpiece against said tool along a straight path passing as a chord through said orbit; and means operatively connecting said drive means and said transport means for relatively varying the orbiting speed of said tool and the advance speed of said workpiece to maintain the velocity vector of said tool parallel to said path during such engagement equal to said advance speed.
Claim 10
Dependent Claim
25 words
The apparatus defined in claim 7 wherein said tool is a milling head, said apparatus further comprising means for rotating said tool about an axis.
Claim 11
Dependent Claim
15 words
The apparatus defined in claim 8 wherein said carrier is provided with two such tools.
Claim 12
Dependent Claim
23 words
The apparatus defined in claim 7 wherein the speed-varying means is a positive transmission connected between said drive means and said transport 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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |