US4250775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool and method
Assignee: Devlieg Machine Co
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Filing: 1979-08-24
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Granted: 1981-02-17
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Expires: 1999-08-24
Abstract
Abstract The present invention relates generally to numerically controlled contour machining, and particularly to an apparatus and method for performing such operations on a "bar-type" horizontal boring mill using the spindle bar to vary the cutting radius of the rotating cutting tool and the machine table to feed the workpiece toward the cutting tool.
Inventors
- 👤 Richard A. Jerue
- 👤 Robert M. Ortlieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:03
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; B23B29/03446; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/182; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50293; Y; Y10; Y10T; Y10T82/00; Y10T82/10; Y10T82/12; Y10T82/25; Y10T82/2502
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
116 words
A method for machining a contour on a workpiece with a single point tool, comprising the steps of: (1) mounting said tool for rotation about a fixed axis and for radial movement transverse to said axis; (2) moving the workpiece toward said tool; (3) sensing the position of said workpiece; (4) sensing the radial position of said tool with respect to said axis; and (5) simultaneously controlling said movement of said workpiece and said radial movement of said tool (a) in respone to said sensed positions, and (b) in a predetermined relationship to one another, thereby causing said tool to machine on said workpiece a contour having a progressively changing dimension measured transversely to said axis.
Claim 2
Independent Claim
116 words
A method for machining a contour on a workpiece with a single point tool, comprising the steps of: (1) mounting said tool for rotation about a fixed axis and for radial movement transverse to said axis; (2) moving the workpiece toward said tool; (3) sensing the position of said workpiece; (4) sensing the radial position of said tool with respect to said axis; and (5) simultaneously controlling said movement of said workpiece and said radial movement of said tool (a) in respone to said sensed positions, and (b) in a predetermined relationship to one another, thereby causing said tool to machine on said workpiece a contour having a progressively changing dimension measured transversely to said axis.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1, wherein said workpiece is moved toward said tool along a path parallel to said axis.
Claim 4
Independent Claim
102 words
A method for machining a contour on a workpiece with a single point tool, comprising the steps of: (1) mounting said tool for rotation about a fixed axis and for radial movement transverse to said axis; (2) moving the workpiece toward said tool; (3) sensing the position of said workpiece; (4) sensing the rotational position of said tool; (5) sensing the radial position of said tool with respect to said axis; and (6) controlling said movement of the workpiece and said radial movement of said tool (a) in response to said sensed positions, and (b) in a predetermined relationship to one another.
Claim 5
Independent Claim
102 words
A method for machining a contour on a workpiece with a single point tool, comprising the steps of: (1) mounting said tool for rotation about a fixed axis and for radial movement transverse to said axis; (2) moving the workpiece toward said tool; (3) sensing the position of said workpiece; (4) sensing the rotational position of said tool; (5) sensing the radial position of said tool with respect to said axis; and (6) controlling said movement of the workpiece and said radial movement of said tool (a) in response to said sensed positions, and (b) in a predetermined relationship to one another.
Claim 6
Dependent Claim
22 words
A method as claimed in claim 3, wherein said radial movement of said tool occurs simultaneously with said movement of said workpiece.
Claim 7
Independent Claim
120 words
A method for machining a contour on a workpiece with a single point tool using a "bar-type" boring mill having a numerically controlled axially movable spindle bar, comprising the steps of: (1) mounting said tool for rotation about the axis of movement of said spindle bar and for radial movement transverse to said axis; (2) radially moving said tool in response to axial movement of said spindle bar; (3) moving the workpiece toward said tool; and (4) simultaneously controlling said movement of said workpiece and said axial movement of said spiindle bar in a predetermined relationship to one another, thereby causing said tool to machine on said workpiece a contour having a progressively changing dimension measured transversely to said axis.
Claim 8
Independent Claim
120 words
A method for machining a contour on a workpiece with a single point tool using a "bar-type" boring mill having a numerically controlled axially movable spindle bar, comprising the steps of: (1) mounting said tool for rotation about the axis of movement of said spindle bar and for radial movement transverse to said axis; (2) radially moving said tool in response to axial movement of said spindle bar; (3) moving the workpiece toward said tool; and (4) simultaneously controlling said movement of said workpiece and said axial movement of said spiindle bar in a predetermined relationship to one another, thereby causing said tool to machine on said workpiece a contour having a progressively changing dimension measured transversely to said axis.
Claim 9
Dependent Claim
20 words
A method as claimed in claim 5, comprising the further step of maintaining said tool in a fixed axial position.
Claim 10
Independent Claim
131 words
A method for machining a contour on a workpiece with a single point tool using a boring mill having a numerically controlled axially movable spindle bar and a numerically controlled workpiece supporting table movable toward and away from said spindle bar, comprising the steps of: (1) mounting said workpiece on said table; (2) mounting said tool for rotation about the axis of movement of said spindle bar and for radial movement transverse to said axis; (3) radially moving said tool in response to axial movement of said spindle bar; (4) simultaneously moving said table and workpiece toward said tool; and (5) controlling said movement of said table and workpiece and said axial movement of said spindle bar in a predetermined relationship to one another to machine a contour on said workpiece.
Claim 11
Independent Claim
131 words
A method for machining a contour on a workpiece with a single point tool using a boring mill having a numerically controlled axially movable spindle bar and a numerically controlled workpiece supporting table movable toward and away from said spindle bar, comprising the steps of: (1) mounting said workpiece on said table; (2) mounting said tool for rotation about the axis of movement of said spindle bar and for radial movement transverse to said axis; (3) radially moving said tool in response to axial movement of said spindle bar; (4) simultaneously moving said table and workpiece toward said tool; and (5) controlling said movement of said table and workpiece and said axial movement of said spindle bar in a predetermined relationship to one another to machine a contour on said workpiece.
Claim 12
Dependent Claim
206 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled contours and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, (b) means for preventing axial movement of the tool mounted thereon, and (c) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; and (2) numerical control means programmed to cause said spindle actuating means and said table drive means to operate simultaneously in a predetermined relationship to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 13
Dependent Claim
206 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled contours and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, (b) means for preventing axial movement of the tool mounted thereon, and (c) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; and (2) numerical control means programmed to cause said spindle actuating means and said table drive means to operate simultaneously in a predetermined relationship to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 14
Dependent Claim
211 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled threads and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, and (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; (2) position sensing means for sensing the rotational position of said spindle under all operating conditions thereof; and (3) numerical control means programmed to cause said table drive means to operate in a predetermined relationship with said position sensing means to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 15
Dependent Claim
211 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled threads and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, and (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; (2) position sensing means for sensing the rotational position of said spindle under all operating conditions thereof; and (3) numerical control means programmed to cause said table drive means to operate in a predetermined relationship with said position sensing means to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 16
Dependent Claim
223 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled tapered threads and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, and (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; (2) position sensing means for sensing the rotational position of said spindle under all operating conditions thereof; and (3) numerical control means programmed to cause said spindle actuating means and said table drive means to operate in a predetermined relationship with each other and with the rotational position of said spindle to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 17
Dependent Claim
223 words
In a machine tool including a rotatable spindle having a free end and being movable longitudinally along its axis of rotation, spindle drive means for rotating said spindle, spindle actuating means for moving said spindle along said axis, a workpiece supporting table movable along a path, and table drive means for moving said table along said path, the improvement comprising means for generating numerically controlled tapered threads and including: (1) a machining head mounted at the free end of said spindle, said head comprising (a) means for mounting a single point tool thereon so that said tool will rotate with said spindle, and (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said spindle in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said spindle in the opposite direction; (2) position sensing means for sensing the rotational position of said spindle under all operating conditions thereof; and (3) numerical control means programmed to cause said spindle actuating means and said table drive means to operate in a predetermined relationship with each other and with the rotational position of said spindle to machine a contour on a workpiece disposed on said table, when said spindle is rotating.
Claim 18
Dependent Claim
237 words
In a machine tool including a rotatable tool-holding spindle assembly consisting of an axially fixed hollow outer spindle sleeve supporting and rotatably driving an axially movable inner spindle bar, spindle drive means for rotating said spindle assembly on its axis, spindle feeding means for moving said inner spindle bar along said axis, a workpiece supporting table movable along a path parallel to said axis, and table drive means for moving said table along said path, the improvement comprising means for numerically controlled generation of elements of rotation or of variable cross-sections along their length and including: (1) a tool-holding head mounted on the face of said axially fixed hollow outer spindle sleeve, said head comprising (a) means for mounting a single-point tool thereon so that said tool will rotate with said spindle sleeve, (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said inner spindle bar in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said inner spindle bar in the opposite direction; and (2) numerical controlled means programmable to cause said inner spindle bar feeding means and said table drive means to operate simultaneously in a predetermined relationship to machine elements of rotation of variable cross-section on a workpiece disposed on said table, when said spindle assembly is rotating.
Claim 19
Dependent Claim
237 words
In a machine tool including a rotatable tool-holding spindle assembly consisting of an axially fixed hollow outer spindle sleeve supporting and rotatably driving an axially movable inner spindle bar, spindle drive means for rotating said spindle assembly on its axis, spindle feeding means for moving said inner spindle bar along said axis, a workpiece supporting table movable along a path parallel to said axis, and table drive means for moving said table along said path, the improvement comprising means for numerically controlled generation of elements of rotation or of variable cross-sections along their length and including: (1) a tool-holding head mounted on the face of said axially fixed hollow outer spindle sleeve, said head comprising (a) means for mounting a single-point tool thereon so that said tool will rotate with said spindle sleeve, (b) means for moving the tool on said head radially outwardly with respect to said axis in direct response to axial movement of said inner spindle bar in one direction, and for moving the tool radially inwardly with respect to said axis in direct response to axial movement of said inner spindle bar in the opposite direction; and (2) numerical controlled means programmable to cause said inner spindle bar feeding means and said table drive means to operate simultaneously in a predetermined relationship to machine elements of rotation of variable cross-section on a workpiece disposed on said table, when said spindle assembly is rotating.
Claim 20
Dependent Claim
93 words
A machining head for a "bar-type" boring mill having an axially movable spindle bar supported within an axially fixed rotatable spindle sleeve, said head comprising: (a) a housing fixed to said spindle sleeve; (b) tool support means on said housing for mounting a tool for radial movement with respect to the axis of rotation of said sleeve; and (c) actuator means in said housing for connecting said spindle bar to said tool support means, said actuator means being operable to translate axial movement of said spindle bar into radial movement of said tool.
Claim 21
Dependent Claim
93 words
A machining head for a "bar-type" boring mill having an axially movable spindle bar supported within an axially fixed rotatable spindle sleeve, said head comprising: (a) a housing fixed to said spindle sleeve; (b) tool support means on said housing for mounting a tool for radial movement with respect to the axis of rotation of said sleeve; and (c) actuator means in said housing for connecting said spindle bar to said tool support means, said actuator means being operable to translate axial movement of said spindle bar into radial movement of said tool.
Claim 22
Dependent Claim
15 words
A machining head as claimed in claim 12, wherein said spindle bar is numerically controlled.
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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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |