US3663114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape controlled automatic machine, especially for printed circuit boards
Assignee: Jasper Electronics Manufacturing Corp
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Filing: 1970-03-24
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Granted: 1972-05-16
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Expires: 1990-03-24
Abstract
Abstract A drilling machine, especially for drilling printed circuit boards wherein the circuit boards to be drilled are mounted on a table over which is positioned a drilling spindle for each circuit board. The drilling spindles are mounted on a carriage which moves in steps at right angles to each other so as to be able to align the spindles with any hole to be drilled in the entire area of the board. A tape controlled circuit is provided which controls the movement of the carriage and the advancing and retracting of the spindles during a drilling operation. Advantageously, the table supporting the boards to be drilled can be shuttled between two opposite end positions so that while one set of boards is being drilled, another set can be mounted on the table preparatory to drilling.
Inventors
- 👤 Alan B Welsh
- 👤 Roger T West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/0008; B; B23; B23B; B23B39/00; B23B39/04; B23B39/08; H05K3/0011; H05K3/0044; H05K3/0047; H05K3/0097; Y; Y10; Y10T; Y10T408/00; Y10T408/08; Y10T408/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
429 words
In a drilling machine especially for drilling holes in printed circuit boards and in which the holes are located at points of intersection of the lines of a grid pattern with a predetermined uniform spAcing between the lines of the grid pattern in each direction: a frame, a workpiece supporting table in the frame, means on the table adapted to receive workpiece means in the form of at least one circuit board which is to be drilled and supporting said board in a predetermined position on said table, a drilling carriage in the frame above the table having spindle means therein, first motor means connected between said carriage and spindle means for moving the spindle means toward and away from said table for drilling operations, second and third motor means connected to at least one of said carriage and table for causing relative movement between said carriage and table in respective angularly related directions corresponding to the direction of the lines of said grid pattern of the circuit board on said table, and control means for controlling the energization of said first, second and third motor means, said control means being operable to prevent energization of said first motor means during energization of either of said second and third motor means and to prevent energization of either of said second and third motor means during energization of said first motor means whereby relative movement of said carriage and table and drilling of workpiece means on the table occur sequentially, said control means also being operable upon the energization of either of said second and third motors to cause relative movement between said carriage and said table an amount equal to the said spacing between the lines of the grid pattern in the respective direction, said control means including means operable to effect an incident of energization of at least one of said second and third motor means following each incident of energization of said first motor means, said control means also including a tape-like control element and a reading head through which said tape-like control element is movable, said reading head including switch elements controlled by said tape-like element, feed means to advance said tape-like control element step by step through said reading head, each stepped position of said tape-like control element along a predetermined length thereof corresponding to a said incidence of energization of at least one of said second and third motor means and at least some of said stepped positions of said tape-like element also corresponding to an incident of energization of said first motor means.
Claim 2
Dependent Claim
429 words
In a drilling machine especially for drilling holes in printed circuit boards and in which the holes are located at points of intersection of the lines of a grid pattern with a predetermined uniform spAcing between the lines of the grid pattern in each direction: a frame, a workpiece supporting table in the frame, means on the table adapted to receive workpiece means in the form of at least one circuit board which is to be drilled and supporting said board in a predetermined position on said table, a drilling carriage in the frame above the table having spindle means therein, first motor means connected between said carriage and spindle means for moving the spindle means toward and away from said table for drilling operations, second and third motor means connected to at least one of said carriage and table for causing relative movement between said carriage and table in respective angularly related directions corresponding to the direction of the lines of said grid pattern of the circuit board on said table, and control means for controlling the energization of said first, second and third motor means, said control means being operable to prevent energization of said first motor means during energization of either of said second and third motor means and to prevent energization of either of said second and third motor means during energization of said first motor means whereby relative movement of said carriage and table and drilling of workpiece means on the table occur sequentially, said control means also being operable upon the energization of either of said second and third motors to cause relative movement between said carriage and said table an amount equal to the said spacing between the lines of the grid pattern in the respective direction, said control means including means operable to effect an incident of energization of at least one of said second and third motor means following each incident of energization of said first motor means, said control means also including a tape-like control element and a reading head through which said tape-like control element is movable, said reading head including switch elements controlled by said tape-like element, feed means to advance said tape-like control element step by step through said reading head, each stepped position of said tape-like control element along a predetermined length thereof corresponding to a said incidence of energization of at least one of said second and third motor means and at least some of said stepped positions of said tape-like element also corresponding to an incident of energization of said first motor means.
Claim 3
Dependent Claim
39 words
A drilling machine according to claim 1, which includes means operable to brake said carriage and table against relative movement in a respective direction when the said second or third motor means pertaining to the said direction is deenergized.
Claim 4
Dependent Claim
94 words
A drilling machine according to claim 1, in which said second and third motor means are operatively connected between said frame and said carriage and said table is reciprocably mounted on said frame, said table having two workpiece supporting regions thereon spaced in the direction of movement of the table on said frame, and fourth motor means connected between said frame and said table operable for shuttling said table between two operative end positions thereof for selectively presenting one or the other of said workpiece supporting areas of the table to said spindle means.
Claim 5
Dependent Claim
70 words
A drilling machine according to claim 3, in which said control means includes means under the joint control of said tape-like control element and a respective said switch element for energizing said fourth motor means after a series of said incidents of energization representing the total number of work operations required to completely drill workpiece means on said table so as to shuttle said table to its opposite end position.
Claim 6
Dependent Claim
54 words
A drilling machine according to claim 4, in which said control means also comprises means for energizing said second and third motor means simultaneously with said fourth motor means so as to return said carriage to a predetermined starting position simultaneously with shuttling of said table from one end poSition thereof to the other.
Claim 7
Dependent Claim
137 words
A drilling machine according to claim 3, in which said carriage includes a first part supporting said spindle means and a second part on which said first part is slidably supported for movement in one of said angularly related directions, said second part being slidably supported on said frame for movement in the other of said angularly related directions, said second motor means comprising a first screw journaled on said second part and a first nut threaded on said first screw and connected to said first part of said carriage and a first reversible motor connected to said first screw, said third motor means comprising a second screw journaled on said frame and a second nut threaded on said second screw and connected to said second part and a second reversible motor connected to said second screw.
Claim 8
Dependent Claim
59 words
A drilling machine according to claim 6, in which said control means includes a rotatable cam driven by each reversible motor and a limit switch actuated thereby and operable to deenergize the respective motor after the screw driven thereby has rotated a predetermined amount whenever the respective motor is energized in a respective stepped position of said tape-like element.
Claim 9
Dependent Claim
42 words
A drilling machine according to claim 7, in which each said cam operated limit switch is supported for angular adjustment about the axis of rotation of the respective rotatable cam for adjustment of the exact stopping point of the pertaining said screw.
Claim 10
Dependent Claim
69 words
A drilling machine according to claim 7, in which said control means includes a run relay for each said reversible motor energizable for energizing the respective motor and a directional relay energizable for one direction of rotation of the motor and deenergizable for the other direction of rotation of the motor, said reading head including a respective switch element connected in controlling relation to each of said directional relays.
Claim 11
Dependent Claim
77 words
A drilling machine according to claim 9, which includes limit switches actuated by said first and second parts of said carriage in each extreme position thereof, said limit switches being connected in circuit with said directional relays and the respective switch elements therefor and when actuated controlling the energization of said directional relays to permit movement of the respective part in a direction away from the respective extreme position only when the respective reversible motor is energized.
Claim 12
Dependent Claim
31 words
A drilling machine according to claim 1, in which said spindle means comprises a plurality of spatially distributed spindles, and said first motor means comprising a first motor for each spindle.
Claim 13
Dependent Claim
61 words
A drilling machine according to claim 11, in which said table is reciprocably mounted on said frame, fourth motor means connected between said frame and said table for shuttling said table between opposite end positions, said table having a pair of spaced workpiece supporting regions thereon and each thereof disposed under said spindles in a respective end position of said table.
References Cited (Backward Citations)
US3246544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |