US4030853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill apparatus
Assignee: Individual
•
Filing: 1976-07-30
•
Granted: 1977-06-21
•
Expires: 1996-07-30
Abstract
Abstract A drill apparatus including a stationary support frame, a drill carriage mounted on the stationary support frame for movement relative thereto along a generally horizontal path, a drill head mounted on the carriage and having a drill rotatable about an axis paralleling the horizontal path, a work engaging head mounted on the drill head for movement relative thereto along a feed path paralleling the horizontal path of movement of the carriage, and feed mechanism connected to the drill head and to the work engaging head for selectively moving the latter toward and away from the drill head. The drill head and work engaging head are adjustable as a unit in a vertical direction relative to the carriage to vertically position the drill and work engaging head. The relative positions of the work engaging head and drill head are sensed to control the direction and speed of relative movement of the work engaging head relative to the drill head.
Inventors
- 👤 Neil J. Mizen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:05
CPC Classifications
B; B23; B23B; B23B41/00; B23B41/003; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/36; Y10T408/38; Y10T408/3811; Y10T408/3844; Y10T408/55; Y10T408/561; Y10T408/5626; Y10T408/5627; Y10T408/564; Y10T408/5647
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
206 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to the stationary support frame, a drill carriage mounted on the stationary support frame for movement relative thereto along a linear path, a drill head mounted on the carriage and having drill means rotatable about an axis paralleling said linear path, a work engaging head mounted on said drill head for movement relative thereto along a feed path paralleling said linear path, said work engaging head having a first work engaging face opposing the drill means, feed means connected to said drill head and to said work engaging head for selectively moving the latter along said feed path in drill feed and drill retracting directions, said feed means being operative in said drill feed direction to bring the drill means and the first work engaging face on the work engaging head into engagement with respective front and rear facing surfaces on the workpiece and to thereafter advance the drill means into the workpiece, said drill carriage being freely movable along said linear path relative to the support frame during movement of said first work engaging head relative to the drill head by said feed means.
Claim 2
Independent Claim
206 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to the stationary support frame, a drill carriage mounted on the stationary support frame for movement relative thereto along a linear path, a drill head mounted on the carriage and having drill means rotatable about an axis paralleling said linear path, a work engaging head mounted on said drill head for movement relative thereto along a feed path paralleling said linear path, said work engaging head having a first work engaging face opposing the drill means, feed means connected to said drill head and to said work engaging head for selectively moving the latter along said feed path in drill feed and drill retracting directions, said feed means being operative in said drill feed direction to bring the drill means and the first work engaging face on the work engaging head into engagement with respective front and rear facing surfaces on the workpiece and to thereafter advance the drill means into the workpiece, said drill carriage being freely movable along said linear path relative to the support frame during movement of said first work engaging head relative to the drill head by said feed means.
Claim 3
Dependent Claim
61 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said work engaging head has a second work engaging face spaced from and opposed to said first work engaging face for engaging the front facing surface on the workpiece when the feed means is operated in said drill retracting direction to retract the drill means from the workpiece.
Claim 4
Dependent Claim
68 words
An apparatus for drilling holes in a workpiece according to claim 2 including position sensing means operatively connected to the work engaging head to said drill head for sensing when the work engaging head reaches a preselected position relative to said drill head, and means responsive to said position sensing means for controlling operation of said feed means between said drill feed direction and said drill retracting direction.
Claim 5
Dependent Claim
104 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said feed means includes means for moving said work engaging head relative to said drill head in said drill feed direction at different rates, position sensing means operatively connected to said work engaging head and to said drill head for sensing when the work engaging head reaches a preselected position relative to said drill head, and means responsive to said position sensing means for controlling operation of said feed means to change the rate of movement of said work engaging head relative to said drill head in said drill feed direction.
Claim 6
Dependent Claim
124 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said feed means is operative to move said first work engaging head in said drill feed direction at different rates, first and second sensing means operatively connected to said work engaging head and to said drill head for sensing when the work engaging head reaches first and second positions relative to said drill head, means responsive to said first position sensing means for controlling operation of said feed means to change the rate of movement of said work engaging head in said drill feed direction, and means responsive to said second position sensing means for controlling operation of said feed means between said drill feed direction and said drill retracting direction.
Claim 7
Dependent Claim
78 words
An apparatus for drilling holes in a workpiece according to claim 1 including a second cutting means having an axially rotatable deburring tool, means mounting said second cutting means on said work engaging head for movement of said deburring tool between a retracted position spaced from the workpiece and a work engaging position with the axis of the rotary cutting member substantially aligned with the axis of said drill means at said rear facing surface of the workpiece.
Claim 8
Dependent Claim
34 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said drill head is mounted on said carriage for adjustment relative thereto along a second path perpendicular to said linear path.
Claim 9
Dependent Claim
78 words
An apparatus for drilling holes in a workpiece according to claim 7 including power operated means for moving said drill head along said second path relative to said carriage, workpiece sensing relay mounted on said work engaging head for sensing when the work engaging head has been moved with said drill head along said second path to a preselected position relative to the workpiece and means responsive to said workpiece sensing means for controlling said power operated means.
Claim 10
Dependent Claim
23 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said linear path and said feed path are generally horizontal.
Claim 11
Dependent Claim
107 words
An apparatus for drilling holes in a workpiece according to claim 1 including a cylinder and piston type hydraulic actuator operatively connected to said stationary frame and to said drill carriage, fluid control means for controlling operation of said hydraulic actuator, said fluid control means including valve means operative in a neutral position thereof to provide substantially free communication between opposite ends of said cylinder to allow free floating of the piston therein, said valve means being selectively operable to first and second other positions for respectively moving the carriage in first and second directions relative to the frame to position the same relative to the workpiece.
Claim 12
Dependent Claim
118 words
An apparatus for drilling holes in a workpiece according to claim 1 wherein said feed means comprises a double acting linear hydraulic actuator having cylinder means operatively connected to said drill head and piston means operatively connected to said work engaging head, fluid control means for controlling operation of said hydraulic actuator, said fluid control means including speed change means actuatable to change the rate of flow of fluid to said cylinder means, position sensing means operatively connected to said work engaging head and to said drill head for sensing when said work engaging head reaches a preselected position relative to said drill head, and means responsive to said position sensing means for actuating said speed change means.
Claim 13
Independent Claim
263 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to the stationary support frame, a drill carriage mounted on the stationary support frame for linear shifting movement relative thereto along a generally horizontal path, a drill head mounted on the carriage and having drill means rotatable about an axis paralleling said horizontal path, a work engaging head mounted on said drill head for movement relative thereto along a linear feed path paralleling said horizontal path, said work engaging head having a first work engaging face opposing the drill means, double acting linear hydraulic actuator means including cylinder and piston means connected to said drill and work engaging heads for relatively moving the same along said linear feed path, fluid control means for controlling operation of said linear hydraulic actuator means and including valve means for reversibly controlling the flow of fluid to said cylinder means to move the drill head and work engaging head toward and away from each other respectively in drill feed and drill retracting directions, said linear hydraulic actuator means being operative in said drill feed direction to bring the drill means and the first work engaging face on the work engaging head into engagement with respective front and rear facing surfaces on the workpiece and to thereafter advance the drill means into the workpiece, said drill carriage being freely movable along said horizontal path relative to the support frame during movement of said work engaging head relative to the drill head by said linear hydraulic actuator means.
Claim 14
Independent Claim
263 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to the stationary support frame, a drill carriage mounted on the stationary support frame for linear shifting movement relative thereto along a generally horizontal path, a drill head mounted on the carriage and having drill means rotatable about an axis paralleling said horizontal path, a work engaging head mounted on said drill head for movement relative thereto along a linear feed path paralleling said horizontal path, said work engaging head having a first work engaging face opposing the drill means, double acting linear hydraulic actuator means including cylinder and piston means connected to said drill and work engaging heads for relatively moving the same along said linear feed path, fluid control means for controlling operation of said linear hydraulic actuator means and including valve means for reversibly controlling the flow of fluid to said cylinder means to move the drill head and work engaging head toward and away from each other respectively in drill feed and drill retracting directions, said linear hydraulic actuator means being operative in said drill feed direction to bring the drill means and the first work engaging face on the work engaging head into engagement with respective front and rear facing surfaces on the workpiece and to thereafter advance the drill means into the workpiece, said drill carriage being freely movable along said horizontal path relative to the support frame during movement of said work engaging head relative to the drill head by said linear hydraulic actuator means.
Claim 15
Dependent Claim
103 words
An apparatus for drilling holes in a workpiece according to claim 12 including position sensing means operatively connected to the drill head and work engaging head for sensing when the latter reaches a preselected position relative to the drill head, and means responsive to said position sensing means for operating said valve means from a drill feed to said drill retracting position, said work engaging head having a second work engaging face opposed to the first work engaging face for engaging the front facing surface of the workpiece when the drill head and work engaging head are moved in said drill retracting direction.
Claim 16
Dependent Claim
73 words
An apparatus for drilling holes in a workpiece according to claim 13 wherein said fluid control means includes speed change means actuatable to change the rate of flow of fluid to said cylinder means, a second position sensing means operatively connected to said drill head and said working engaging head and operative when said work engaging head reaches a second preselected position relative to the drill head for actuating said speed change means.
Claim 17
Dependent Claim
123 words
An apparatus for drilling holes in a workpiece according to claim 12 including a second hydraulic actuator having cylinder and piston means operatively connected to said stationary frame and to said drill carriage, a second fluid control means for controlling operation of said second hydraulic actuator, said fluid control means including second valve means operative in a neutral position thereof to provide substantially free communication between opposite ends of the cylinder means of the second hydraulic actuator to allow free floating of the piston means thereon, said second valve means being selectively operable to first and second other positions for respectively moving the drill carriage in first and second opposite directions relative to the frame to position the same relative to the workpiece.
Claim 18
Dependent Claim
26 words
An apparatus for drilling holes in a workpiece according to claim 12 wherein said drill head is mounted on said carriage for vertical adjustment relative thereto.
Claim 19
Dependent Claim
72 words
An apparatus for drilling holes in a workpiece according to claim 16 including power operated means for vertically adjusting said drill head relative to said drill carriage, workpiece sensing mounted on the work engaging head for sensing when the work engaging head has been vertically adjusted with said drill head to a preselected position relative to the workpiece, and means responsive to said workpiece sensing means for controlling said power operated means.
Claim 20
Dependent Claim
78 words
An apparatus for drilling holes in a workpiece according to claim 12 including a second cutting means having an axially rotatable deburring tool, means mounting said second cutting means on said work engaging head for movement of said deburring tool between a retracted position spaced from the workpiece and a work engaging position with the axis of the rotary cutting member substantially aligned with the axis of said drill means at said rear facing surface of the workpiece.
Claim 21
Independent Claim
217 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to said stationary support frame, a drill carriage mounted on the stationary support frame for shifting movement relative thereto along a generally horizontal path, said carriage having vertical guideways thereon, upper and lower drill heads mounted on said vertical guideways for vertical adjustment relative to the carriage, said upper and lower drill heads respectively having upper and lower drill means rotatable about an axis paralleling said horizontal path, upper and lower work engaging heads respectively mounted on said upper and lower drill heads for movement relative thereto along upper and lower linear feed paths paralleling said horizontal path, said upper and lower work engaging heads each having a first work engaging face opposing the respective upper and lower drill means, upper linear hydraulic actuator means including double acting cylinder and piston means connected to the upper drill head and upper work engaging head for relatively moving the same along said upper linear feed path, lower linear hydraulic actuator means connected to the lower drill head and lower work engaging head for relatively moving the same along said lower linear feed path, and fluid control means for controlling operation of said upper and lower linear hydraulic actuators.
Claim 22
Independent Claim
217 words
An apparatus for drilling holes in a workpiece comprising: a stationary support frame, work locating means for locating a workpiece relative to said stationary support frame, a drill carriage mounted on the stationary support frame for shifting movement relative thereto along a generally horizontal path, said carriage having vertical guideways thereon, upper and lower drill heads mounted on said vertical guideways for vertical adjustment relative to the carriage, said upper and lower drill heads respectively having upper and lower drill means rotatable about an axis paralleling said horizontal path, upper and lower work engaging heads respectively mounted on said upper and lower drill heads for movement relative thereto along upper and lower linear feed paths paralleling said horizontal path, said upper and lower work engaging heads each having a first work engaging face opposing the respective upper and lower drill means, upper linear hydraulic actuator means including double acting cylinder and piston means connected to the upper drill head and upper work engaging head for relatively moving the same along said upper linear feed path, lower linear hydraulic actuator means connected to the lower drill head and lower work engaging head for relatively moving the same along said lower linear feed path, and fluid control means for controlling operation of said upper and lower linear hydraulic actuators.
Claim 23
Dependent Claim
38 words
An apparatus for drilling holes in a workpiece according to claim 19 wherein said fluid control means includes a single flow reversing valve for reversibly controlling the flow of fluid to both the upper and lower hydraulic actuators.
Claim 24
Dependent Claim
81 words
An apparatus for drilling holes in a workpiece according to claim 20 wherein said fluid control means includes speed change means common to both the upper and lower hydraulic actuators actuatable to change the rate of flow of fluid to the cylinder means of both the upper and lower hydraulic actuators, and position sensing means operative when either said upper or lower drill head reaches a preselected position relative to its respective work engaging head for actuating said speed change means.
References Cited (Backward Citations)
US3804544A
Cited
US3892154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |