GB2256728A - Drilling process and apparatus - Google Patents
Drilling process and apparatusInfo
- Publication number
- GB2256728A GB2256728A GB9217574A GB9217574A GB2256728A GB 2256728 A GB2256728 A GB 2256728A GB 9217574 A GB9217574 A GB 9217574A GB 9217574 A GB9217574 A GB 9217574A GB 2256728 A GB2256728 A GB 2256728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thrust
- bit
- penetration
- matrix
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
- G05B19/4163—Adaptive control of feed or cutting velocity
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34321—Database for control of a single machine
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/42—Servomotor, servo controller kind till VSS
- G05B2219/42152—Learn, self, auto tuning, calibrating, environment adaptation, repetition
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45129—Boring, drilling
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49068—Minimum cost adaptive
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Earth Drilling (AREA)
Abstract
In a drilling process speed, bit thrust and penetration are monitored. Data stored in a data base relating rotational speed and thrust as adjustable variables is correlated with data on the penetration rate as controlled parameter to produce a matrix to enable prediction of penetration rate to be expected at known thrust and rotational rates. Likewise a similar matrix may be constructed for relating wear rate to adjustable variables for example speed and thrust. The parameters predicted from these variables at various values for the speed and thrust are used to construct a further matrix relating bit penetration and bit wear rates with cost per unit distance drilled and this third matrix searched for minimum cost. From the first two matrices rotation rate of the drill bit and thrust applied to the drill bit are adjusted to give a predicted penetration rate for minimum cost and the drill bit is operated at these conditions. All conditions are monitored and the information used to recalculate the various matrices to define the process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9217574A GB2256728B (en) | 1990-03-06 | 1992-08-19 | Drilling process and apparatus |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909004952A GB9004952D0 (en) | 1990-03-06 | 1990-03-06 | Drilling process and apparatus |
PCT/GB1991/000348 WO1991014214A1 (en) | 1990-03-06 | 1991-03-06 | Drilling process and apparatus |
GB9217574A GB2256728B (en) | 1990-03-06 | 1992-08-19 | Drilling process and apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9217574D0 GB9217574D0 (en) | 1992-10-07 |
GB2256728A true GB2256728A (en) | 1992-12-16 |
GB2256728B GB2256728B (en) | 1994-03-09 |
Family
ID=26296749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9217574A Expired - Fee Related GB2256728B (en) | 1990-03-06 | 1992-08-19 | Drilling process and apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2256728B (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4346444A (en) * | 1980-03-20 | 1982-08-24 | Rohr Industries, Inc. | Constant thrust adaptive control machine tool |
US4854786A (en) * | 1988-05-26 | 1989-08-08 | Allen-Bradley Company, Inc. | Computer controlled automatic shift drill |
EP0339659A2 (en) * | 1988-04-28 | 1989-11-02 | Fuji Jukogyo Kabushiki Kaisha | Method and apparatus for controlling drilling operation |
-
1992
- 1992-08-19 GB GB9217574A patent/GB2256728B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4346444A (en) * | 1980-03-20 | 1982-08-24 | Rohr Industries, Inc. | Constant thrust adaptive control machine tool |
EP0339659A2 (en) * | 1988-04-28 | 1989-11-02 | Fuji Jukogyo Kabushiki Kaisha | Method and apparatus for controlling drilling operation |
US4854786A (en) * | 1988-05-26 | 1989-08-08 | Allen-Bradley Company, Inc. | Computer controlled automatic shift drill |
Also Published As
Publication number | Publication date |
---|---|
GB9217574D0 (en) | 1992-10-07 |
GB2256728B (en) | 1994-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960306 |