GB2165665A - Program adjustment in CNC apparatus - Google Patents
Program adjustment in CNC apparatus Download PDFInfo
- Publication number
- GB2165665A GB2165665A GB08426139A GB8426139A GB2165665A GB 2165665 A GB2165665 A GB 2165665A GB 08426139 A GB08426139 A GB 08426139A GB 8426139 A GB8426139 A GB 8426139A GB 2165665 A GB2165665 A GB 2165665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- program
- accordance
- successive
- discrepancies
- data
- 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.)
- Withdrawn
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
- G05B19/408—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 data handling or data format, e.g. reading, buffering or conversion of data
-
- 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
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35287—Verify, check program by drawing, display part, testpiece
-
- 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
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36043—Correction or modification of program
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
In a computer numerical control system, a part is machined or formed by an apparatus in accordance with a part-program which controls that apparatus, then the part is examined and compared with the intended shape as defined by the part-program, and means are provided for correcting the part program in respect of any discrepancies.
Description
SPECIFICATION
Program adjustments in CNC apparatus
This invention relates to the computer numerical control of machining or part-forming apparatus, which apparatus may be of any kind in general, for example a lathe, punch press, drilling machine etc.
Where such apparatus are required to machine or form successive parts to the same shape etc., it is well known to effect a computer numerical control of the apparatus, so that the apparatus will repeatedly carry out exactly the same operation or operations on successive parts, all in accordance with a control program which is formulated for the purpose.
It can occur however, that the part as processed by the apparatus does not correspond exactly with the shape etc., required and defined by the part-program for the apparatus.
This discrepancy can be due to a number of factors including characteristics of the apparatus itself.
In accordance with the present invention, there is provided a system wherein a part is machined or formed by an apparatus in accordance with a part-program which controls that apparatus, then the part is examined and compared with the intended shape etc., as defined by the part-program, and means are provided for correcting the part-program.
Thus errors in dimensions, such as the shape or profile for a part turned on a lathe, or the size or positioning of holes punched or drilled in a part, can be corrected by adjusting the various co-ordinate values contained in the part-program. Other items of data, relating to a variety of parameters and entered when formulating the original part-program, can also be adjusted according to the discrepancies which are detected between the actually-processed part and the required-part. The required-part may be defined by the final product of a computer aided design project.
The principles of this invention are applicable, for example, to an apparatus which travels and visits successive stations to carry out the same operations on work pieces at the different stations, or where successive work piece-holders travel relative to a fixed apparatus. Discrepancies between parts produced at the different stations, or in different work piece-holders, can be detected and corrected by adjustment of the data held in the partprogram.
Various forms of apparatus are known for examining a part and providing an output in numerical form, representing the actual shape, profile and dimensions of the part. In accordance with this invention, this output is compared with numerical data representing the intended or required-part, so as to generate automatically corrected data which is written into the part-program in place of the original data. The invention accordingly provides the potential for writing the original part-program with relatively approximate data for the required shape etc., then using the comparison and program-adjusting steps to refine the partprogram such that the part will correspond closely with its requirement.
1. Apparatus arranged to machine or form a part in accordance with a part-program which controls the apparatus, and including means for examining the actual part and comparing it with the intended shape as defined by the part-program, and means for correcting the part-program in respect of any discrepancies.
2. An apparatus as claimed in claim 1, arranged to travel and visit successive stations to carry out the same operations on workpieces at the different stations and arranged to detect any discrepancies between parts produced at the different stations and effect corrections in the part-program.
3. An apparatus as claimed in claim 1, arranged for successive workpiece-holders to travel to the apparatus for machining or forming the held workpiece, and arranged to detect any discrepancies between parts produced in different holders and effect corrections in the part-program.
4. An apparatus as claimed in claim 1 and substantially as herein described.
5. A method in which a part is machined or formed in accordance with a part-program controlling a machining or forming apparatus, then the actual part is examined and compared with the intended shape of the part as defined by the part-program and in accordance therewith the part-program is automatically corrected.
6. A method as claimed in claim 5, in which the intended shape of the part is defined by the final product of a computer aided design project.
7. A method as claimed in claim 5, in which the original part-program is written with relatively approximate data for the intended shape such that the comparison and programadjusting steps refine the part-program.
8. A method as claimed in claim 5 and substantially as herein described.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. Apparatus arranged to machine or form a part in accordance with a part-program which controls the apparatus, and including means for examining the actual part and comparing it with the intended shape as defined by the part-program, and means for correcting the part-program in respect of any discrepancies.
2. An apparatus as claimed in claim 1, arranged to travel and visit successive stations to carry out the same operations on workpieces at the different stations and arranged to detect any discrepancies between parts produced at the different stations and effect corrections in the part-program.
3. An apparatus as claimed in claim 1, arranged for successive workpiece-holders to travel to the apparatus for machining or forming the held workpiece, and arranged to detect any discrepancies between parts produced in different holders and effect corrections in the part-program.
4. An apparatus as claimed in claim 1 and substantially as herein described.
5. A method in which a part is machined or formed in accordance with a part-program controlling a machining or forming apparatus, then the actual part is examined and compared with the intended shape of the part as defined by the part-program and in accordance therewith the part-program is automatically corrected.
6. A method as claimed in claim 5, in which the intended shape of the part is defined by the final product of a computer aided design project.
7. A method as claimed in claim 5, in which the original part-program is written with relatively approximate data for the intended shape such that the comparison and programadjusting steps refine the part-program.
8. A method as claimed in claim 5 and substantially as herein described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08426139A GB2165665A (en) | 1984-10-16 | 1984-10-16 | Program adjustment in CNC apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08426139A GB2165665A (en) | 1984-10-16 | 1984-10-16 | Program adjustment in CNC apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8426139D0 GB8426139D0 (en) | 1984-11-21 |
GB2165665A true GB2165665A (en) | 1986-04-16 |
Family
ID=10568261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08426139A Withdrawn GB2165665A (en) | 1984-10-16 | 1984-10-16 | Program adjustment in CNC apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2165665A (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802206A (en) * | 1953-10-28 | 1958-10-01 | Emi Ltd | Improvements relating to the automatic control of machines for shaping workpieces |
GB1269999A (en) * | 1968-07-17 | 1972-04-12 | Ikegai Iron Works Ltd | An automatic tool position compensating system for a numerically controlled machine tool |
GB1323439A (en) * | 1969-10-01 | 1973-07-18 | Siemens Ag | Automatically operating on a workpiece with a cutting or forming tool |
GB1516983A (en) * | 1974-07-26 | 1978-07-05 | Herbert Ltd A | Automatic tool and machining process |
GB1526754A (en) * | 1974-09-25 | 1978-09-27 | Siemens Ag | Control arrangements |
GB2097554A (en) * | 1981-04-01 | 1982-11-03 | Mensor Ab | Correction of deviations in plastic objects |
GB2117540A (en) * | 1982-03-30 | 1983-10-12 | Gen Electric | Dynamic balancing control |
-
1984
- 1984-10-16 GB GB08426139A patent/GB2165665A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802206A (en) * | 1953-10-28 | 1958-10-01 | Emi Ltd | Improvements relating to the automatic control of machines for shaping workpieces |
GB1269999A (en) * | 1968-07-17 | 1972-04-12 | Ikegai Iron Works Ltd | An automatic tool position compensating system for a numerically controlled machine tool |
GB1323439A (en) * | 1969-10-01 | 1973-07-18 | Siemens Ag | Automatically operating on a workpiece with a cutting or forming tool |
GB1516983A (en) * | 1974-07-26 | 1978-07-05 | Herbert Ltd A | Automatic tool and machining process |
GB1526754A (en) * | 1974-09-25 | 1978-09-27 | Siemens Ag | Control arrangements |
GB2097554A (en) * | 1981-04-01 | 1982-11-03 | Mensor Ab | Correction of deviations in plastic objects |
GB2117540A (en) * | 1982-03-30 | 1983-10-12 | Gen Electric | Dynamic balancing control |
Also Published As
Publication number | Publication date |
---|---|
GB8426139D0 (en) | 1984-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |