US3584496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic actuator
Assignee: TE Connectivity Corp
•
Filing: 1968-05-03
•
Granted: 1971-06-15
•
Expires: 1988-05-03
Abstract
Abstract A means and method and system for working material forming dies is disclosed featuring a magnetically actuated ram. Ram drive is provided by a tractive magnet having a force versus displacement characteristic similar to the force-displacement characteristic required in certain types of metal working operations such as crimping sheet metal terminals onto lead wires. Circuits are disclosed for providing a control of applied field to motor elements which in turn permits a control of ram displacement, force, velocity, acceleration, and/or dwell time of a die or dies drawn by the ram.
Inventors
- 👤 Joseph Richard Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/42; H; H01; H01R; H01R43/00; H01R43/04
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
92 words
In an apparatus for working material through the compression of a workpiece by a die driven thereagainst having a given required force-displacement characteristic, an electromagnetic motor of a type having movable motor elements of magnetic material having winding means thereon and operable to develop a force proportional to magnetic intensity, control means including a power supply connected to said motor to energize said windings and develop a force-displacement characteristic of said elements similar to the said given characteristic, and die means connected to be driven by said motor to deform a workpiece.
Claim 2
Dependent Claim
92 words
In an apparatus for working material through the compression of a workpiece by a die driven thereagainst having a given required force-displacement characteristic, an electromagnetic motor of a type having movable motor elements of magnetic material having winding means thereon and operable to develop a force proportional to magnetic intensity, control means including a power supply connected to said motor to energize said windings and develop a force-displacement characteristic of said elements similar to the said given characteristic, and die means connected to be driven by said motor to deform a workpiece.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein the said elements are of a magnetic material selected to approach saturation as the said elements approach each other and the said die means approaches completion of deformation of the workpiece.
Claim 4
Dependent Claim
40 words
The apparatus of claim 1 wherein the said elements are of a magnetic material which remains substantially unsaturated throughout the movement cycle of said motor elements and the movement cycle of said die means to complete deformation of a workpiece.
Claim 5
Dependent Claim
114 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a tractive magnet motor including at least a pair of motor elements with at least one of said elements containing a winding operable upon being energized to actuate said motor, first means connecting one die to one of said elements to be driven thereby, second means connecting the other of said elements to another die, and third means positioning at least one of said connecting means with said dies and elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized.
Claim 6
Dependent Claim
114 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a tractive magnet motor including at least a pair of motor elements with at least one of said elements containing a winding operable upon being energized to actuate said motor, first means connecting one die to one of said elements to be driven thereby, second means connecting the other of said elements to another die, and third means positioning at least one of said connecting means with said dies and elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized.
Claim 7
Dependent Claim
21 words
The apparatus of claim 4 wherein said third means includes means developing a force tending to drive said motor elements apart.
Claim 8
Dependent Claim
34 words
The apparatus of claim 4 wherein said first means includes a ram linked to said one die and to said one motor element and said third means includes a spring connected to said ram.
Claim 9
Dependent Claim
78 words
In a control system for a press or the like, including a tractive magnet motor, a solid state switch means connected to a power supply and operable in a closed condition to supply power to the press motor, first means for controlling said switch means to control the amount of power supplied to the motor and second means for limiting the extent of time power is applied to the motor to control the duty cycle of the press.
Claim 10
Dependent Claim
78 words
In a control system for a press or the like, including a tractive magnet motor, a solid state switch means connected to a power supply and operable in a closed condition to supply power to the press motor, first means for controlling said switch means to control the amount of power supplied to the motor and second means for limiting the extent of time power is applied to the motor to control the duty cycle of the press.
Claim 11
Dependent Claim
22 words
The system of claim 7 wherein said first means includes a force sensing transducer operable to sense force developed by said press.
Claim 12
Dependent Claim
94 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means Connecting said motor to said die to drive said die against the workpiece in a single stroke to effect a controlled deformation thereof, said control means including means to control the extent of force developed by said tractive magnet motor and thereby control the extent of force driving said die against said workpiece during said single stroke.
Claim 13
Dependent Claim
94 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means Connecting said motor to said die to drive said die against the workpiece in a single stroke to effect a controlled deformation thereof, said control means including means to control the extent of force developed by said tractive magnet motor and thereby control the extent of force driving said die against said workpiece during said single stroke.
Claim 14
Dependent Claim
95 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece in a single stroke to effect a controlled deformation thereof, said control means including means to control the rate of force developed by said tractive magnet motor and thereby control the rate of force developed by said die against said workpiece during said single stroke.
Claim 15
Dependent Claim
95 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece in a single stroke to effect a controlled deformation thereof, said control means including means to control the rate of force developed by said tractive magnet motor and thereby control the rate of force developed by said die against said workpiece during said single stroke.
Claim 16
Dependent Claim
89 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to control the length of time a given force is developed by said tractive magnet motor and thereby control the dwell time of said die against said workpiece.
Claim 17
Dependent Claim
89 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to control the length of time a given force is developed by said tractive magnet motor and thereby control the dwell time of said die against said workpiece.
Claim 18
Dependent Claim
89 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to control the extent, rate, and length of time of force developed by said tractive magnet motor and thereby control the working of the die against a workpiece.
Claim 19
Dependent Claim
89 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor, control means for said motor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to control the extent, rate, and length of time of force developed by said tractive magnet motor and thereby control the working of the die against a workpiece.
Claim 20
Dependent Claim
91 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor and control means therefor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to independently control the extent of force, the rate of force, and the length of time force is applied by said tractive magnet motor to said die and to said workpiece.
Claim 21
Dependent Claim
91 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor and control means therefor to supply power energizing said motor, a die and means connecting said motor to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including means to independently control the extent of force, the rate of force, and the length of time force is applied by said tractive magnet motor to said die and to said workpiece.
Claim 22
Dependent Claim
91 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor and control means therefor to supply power energizing said motor, a die and means connecting said motor to said to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including sensing means for sensing the force developed by said die against said workpiece and means to provide a feedback signal representative of said sensed force to regulate said control means.
Claim 23
Dependent Claim
91 words
In a system for working material by the controlled deformation of a workpiece by a die driven thereagainst, a tractive magnet motor and control means therefor to supply power energizing said motor, a die and means connecting said motor to said to said die to drive said die against the workpiece to effect a controlled deformation thereof, said control means including sensing means for sensing the force developed by said die against said workpiece and means to provide a feedback signal representative of said sensed force to regulate said control means.
Claim 24
Independent Claim
181 words
An apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, said apparatus comprising, in combination: a tractive magnet motor including at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor; first means connecting one die to one of said motor elements to be driven thereby; second means connecting the other of said motor elements to another die; and third means positioning at least one of said connecting means with said dies and said motor elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized; with said first means including a ram linked to said one motor element and to said one die, and with said second means including a frame affixed to said otHer motor element and to said other die, the said other motor element having a relief through which said ram is extended to position the dies in working relationship.
Claim 25
Independent Claim
181 words
An apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, said apparatus comprising, in combination: a tractive magnet motor including at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor; first means connecting one die to one of said motor elements to be driven thereby; second means connecting the other of said motor elements to another die; and third means positioning at least one of said connecting means with said dies and said motor elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized; with said first means including a ram linked to said one motor element and to said one die, and with said second means including a frame affixed to said otHer motor element and to said other die, the said other motor element having a relief through which said ram is extended to position the dies in working relationship.
Claim 26
Independent Claim
190 words
An apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, said apparatus comprising, in combination: a tractive magnet motor including at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor; first means connecting one die to one of said motor elements to be driven thereby; second means connecting the other of said motor elements to another die; and third means positioning at least one of said connecting means with said dies and said motor elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized; with said first means including a ram linked to said one motor element and to said one die, and with said second means including a frame affixed to said other motor element and to said other die, the said other motor element having a relief with a bearing disposed therein, said ram being extended through and supported by said bearing to position the dies in working relationship.
Claim 27
Independent Claim
190 words
An apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, said apparatus comprising, in combination: a tractive magnet motor including at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor; first means connecting one die to one of said motor elements to be driven thereby; second means connecting the other of said motor elements to another die; and third means positioning at least one of said connecting means with said dies and said motor elements spaced apart when said winding is deenergized and means guiding said dies relatively together deforming a workpiece inserted therebetween responsive to said winding being energized; with said first means including a ram linked to said one motor element and to said one die, and with said second means including a frame affixed to said other motor element and to said other die, the said other motor element having a relief with a bearing disposed therein, said ram being extended through and supported by said bearing to position the dies in working relationship.
Claim 28
Dependent Claim
135 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a housing including a zone for workpiece insertion, a first die affixed to said housing in said zone, a tractive magnet motor disposed within said housing including a ram having a second die linked thereto positioned to be driven into said zone toward said first die, said tractive magnet motor further including at least two motor elements with one motor element affixed to said housing and the other motor element connected to said ram, first means for energizing said tractive magnet motor to drive said ram and said second die against a workpiece disposed on said first die, and second means for driving said ram and the second die to an open position out of said zone.
Claim 29
Dependent Claim
135 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a housing including a zone for workpiece insertion, a first die affixed to said housing in said zone, a tractive magnet motor disposed within said housing including a ram having a second die linked thereto positioned to be driven into said zone toward said first die, said tractive magnet motor further including at least two motor elements with one motor element affixed to said housing and the other motor element connected to said ram, first means for energizing said tractive magnet motor to drive said ram and said second die against a workpiece disposed on said first die, and second means for driving said ram and the second die to an open position out of said zone.
Claim 30
Dependent Claim
169 words
in an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a housing including a zone for workpiece insertion, a first die affixed to said housing in said zone, a tractive magnet motor disposed within said housing including a ram having a second die linked thereto and positioned to be driven into said zone toward said first die, said motor comprising at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor, one motor element being affixed to said housing and the other motor element being connected to said ram, control means for energizing the winding of said tractive magnet motor to drive said ram and said second die against a workpiece disposed on said first die, sensing means for sensing the force developed by said dies against said workpiece, and means to provide a feedback signal representative of said sensed force to regulate said control means.
Claim 31
Dependent Claim
169 words
in an apparatus for working material through a controlled deformation of a workpiece by compression thereof between dies, a housing including a zone for workpiece insertion, a first die affixed to said housing in said zone, a tractive magnet motor disposed within said housing including a ram having a second die linked thereto and positioned to be driven into said zone toward said first die, said motor comprising at least a pair of motor elements with at least one of said motor elements containing a winding operable upon being energized to actuate said motor, one motor element being affixed to said housing and the other motor element being connected to said ram, control means for energizing the winding of said tractive magnet motor to drive said ram and said second die against a workpiece disposed on said first die, sensing means for sensing the force developed by said dies against said workpiece, and means to provide a feedback signal representative of said sensed force to regulate said control means.
Claim 32
Dependent Claim
83 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type of a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die and workpiece, sensing the force developed in said workpiece, and developing a feedback signal to limit the power signal and the force applied to said ram, die and workpiece.
Claim 33
Dependent Claim
83 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type of a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die and workpiece, sensing the force developed in said workpiece, and developing a feedback signal to limit the power signal and the force applied to said ram, die and workpiece.
Claim 34
Dependent Claim
94 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die and workpiece, and the steps of independently controlling the rate of application of saId power signal, the amplitude of said power signal and the duration thereof to control the related force characteristics driving said ram and die against said workpiece.
Claim 35
Dependent Claim
94 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die and workpiece, and the steps of independently controlling the rate of application of saId power signal, the amplitude of said power signal and the duration thereof to control the related force characteristics driving said ram and die against said workpiece.
Claim 36
Dependent Claim
154 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof, a housing including a base carrying a fixed die, a frame carrying an element of magnetic material including a surface of appreciable area, a further element of magnetic material including a surface of appreciable area, means for positioning said elements with the surfaces thereof in facing relationship to define an air gap therebetween and supporting at least one of said elements for movement closing said air gap, at least one of said elements having a winding operable when energized to develop an electromagnetic force driving said elements together, at least one of said elements being linked to a movable die positioned to move toward said fixed die as said force is developed in a movement proportional to the closing of said gap between said elements, and means limiting said air gap to prevent surface engagement of said elements.
Claim 37
Dependent Claim
154 words
In an apparatus for working material through a controlled deformation of a workpiece by compression thereof, a housing including a base carrying a fixed die, a frame carrying an element of magnetic material including a surface of appreciable area, a further element of magnetic material including a surface of appreciable area, means for positioning said elements with the surfaces thereof in facing relationship to define an air gap therebetween and supporting at least one of said elements for movement closing said air gap, at least one of said elements having a winding operable when energized to develop an electromagnetic force driving said elements together, at least one of said elements being linked to a movable die positioned to move toward said fixed die as said force is developed in a movement proportional to the closing of said gap between said elements, and means limiting said air gap to prevent surface engagement of said elements.
Claim 38
Dependent Claim
79 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die, and workpiece, and controlling the velocity and acceleration characteristics of said ram and die by shaping said power signal in terms of amplitude and duration.
Claim 39
Dependent Claim
79 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die, and workpiece, and controlling the velocity and acceleration characteristics of said ram and die by shaping said power signal in terms of amplitude and duration.
Claim 40
Dependent Claim
81 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die, and workpiece, and controlling the dwell time of said die on said workpiece by controlling the length of time said power signal is applied to said motor.
Claim 41
Dependent Claim
81 words
In a method of working material the steps including providing a force through a motor of the tractive magnet type to a ram carrying a die driven against a workpiece by energization of the motor, controlling the power signal applied to said motor to control the extent of force applied to said ram, die, and workpiece, and controlling the dwell time of said die on said workpiece by controlling the length of time said power signal is applied to said motor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |