CN108549318B - Numerical control machining method for improving quality of weir crest fillet of overflow brick - Google Patents
Numerical control machining method for improving quality of weir crest fillet of overflow brick Download PDFInfo
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- CN108549318B CN108549318B CN201810446959.6A CN201810446959A CN108549318B CN 108549318 B CN108549318 B CN 108549318B CN 201810446959 A CN201810446959 A CN 201810446959A CN 108549318 B CN108549318 B CN 108549318B
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- 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
- G05B19/19—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 positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
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- 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
- G05B2219/35349—Display part, programmed locus and tool path, traject, dynamic locus
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- 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
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- 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]
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Abstract
According to the invention, the actual measurement size of the reference plane for processing the weir crest fillet of the overflow brick is compared with the design size, so that the offset direction in the four-fillet processing of the weir crest of the overflow brick is judged, the offset is calculated and determined, and the alignment processing is carried out by using the method of gradually drawing close to the brick body for trial processing. After practical application, the method disclosed by the invention can ensure the quality of four fillets at the weir crest of the overflow brick, eliminate the uncontrollable phenomenon in the processing of the fillet at the weir crest, ensure the production period and ensure the quality of the finished product of the overflow brick.
Description
Technical Field
The invention belongs to the technical field of overflow brick finished product processing, and particularly relates to overflow brick weir crest fillet processing quality.
Background
The overflow brick is an irreplaceable key part in the process of producing the liquid crystal glass substrate by adopting an overflow down-draw method, liquid glass liquid overflows from an overflow brick groove, flows through a weir top fillet of the overflow brick, flows to the tip part of the overflow brick through overflow surfaces at two sides and is converged into substrate glass. The weir crest fillet processing of the overflow brick is the last process of the numerical control processing period of the 45-day overflow brick, the processing quality of the weir crest fillet processing is very important, and large fillets and small fillets are not allowed to appear.
At present, the machining quality of the weir crest fillet of the overflow brick is influenced by the machining error of the machining reference surface, a large fillet or a small fillet often appears, the small fillet causes secondary machining, the large fillet causes poor quality of a whole overflow block, and a serious large fillet still causes scrapping of the whole overflow brick, so that the production period is delayed, and great economic loss is also caused.
Disclosure of Invention
The invention aims to provide a numerical control machining method for improving the quality of a weir crest fillet of an overflow brick, which can judge the offset direction, calculate and determine the offset according to actual measurement data of a machining reference surface, gradually draw close to a brick body for trial machining, and ensure the quality of the weir crest fillet of the overflow brick.
The invention is realized by the following technical scheme:
a numerical control machining method for improving the quality of a weir crest fillet of an overflow brick comprises the following steps:
1) establishing a processing coordinate system, wherein the directions of coordinate axes are respectively the length direction of the overflow brick, the width direction of the overflow brick and the height direction of the overflow brick;
2) respectively carrying out height direction calibration and width direction calibration;
the height direction calibration method comprises the following steps: measuring the actual size of the reference surface of the height direction of the weir crest fillet of the overflow brick, comparing the measured actual size with the design size, determining the offset direction and the offset of the height direction of the weir crest fillet of the overflow brick, and further correcting the processing parameters of the numerical control machine;
the method for calibrating the width direction comprises the following steps: measuring the actual size of the reference surface on the outer side of the weir crest in the width direction of the overflow brick, comparing the measured actual size with the design size, determining the machining offset direction and the initial offset of the outer side of the weir crest fillet of the overflow brick, and further correcting the machining parameters of the numerical control machine; measuring the actual size of the reference surface on the inner side of the weir crest fillet in the width direction of the overflow brick; comparing the measured actual size with the design size, determining the machining offset direction and the initial offset of the inner side of the weir crest fillet of the overflow brick, and further correcting the machining parameters of the numerical control machine;
and 3) carrying out numerical control machining on the weir crest fillet of the overflow brick by adopting a method of gradually drawing the brick body to trial machining.
Preferably, in step 1), the length direction of the overflow brick is set as an X axis, the width direction of the overflow brick is set as a Y axis, and the height direction of the overflow brick is set as a Z axis.
Preferably, in the step 2), the measured actual size of the height direction reference surface of the weir crest fillet of the overflow brick comprises the actual size of the height direction reference surface of the weir crest fillet of the large end of the overflow brick and the actual size of the height direction reference surface of the weir crest fillet of the small end of the overflow brick.
Preferably, in step 2), the measured actual dimension of the outer reference surface of the weir crest of the overflow brick in the width direction comprises the actual dimension of the outer reference surface of the weir crests of the two overflow walls of the overflow brick in the width direction of the weir crest of the overflow brick.
Preferably, in step 2), the measured actual dimension of the inner reference plane of the weir crest in the width direction of the weir crest of the overflow brick comprises the actual dimension of the inner reference plane of the weir crests of the two overflow walls of the overflow brick in the width direction of the weir crest of the overflow brick.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, the actual measurement size of the reference plane for processing the weir crest fillet of the overflow brick is compared with the design size, so that the offset direction in the four-fillet processing of the weir crest of the overflow brick is judged, the offset is calculated and determined, and the alignment processing is carried out by using the method of gradually drawing close to the brick body for trial processing. After practical application, the method disclosed by the invention can ensure the quality of four fillets at the weir crest of the overflow brick, eliminate the uncontrollable phenomenon in the processing of the fillet at the weir crest, ensure the production period and ensure the quality of the finished product of the overflow brick.
Drawings
Fig. 1 is a front view of a construction of an overflow brick.
Fig. 2 is a schematic right-view of the construction of the overflow brick.
Wherein, 1 is a molding overflow brick; 2, an overflow brick weir top fillet numerical control machining coordinate system; 3 is the big end of the overflow brick; 4 is the small end of the overflow brick; 5, machining a reference surface on the Y negative direction outside a weir crest fillet of the overflow brick; 6 is a Y forward processing reference surface outside a weir crest fillet of the overflow brick; 7 is a Y forward processing reference surface on the inner side of a weir crest fillet of the overflow brick; and 8, a Y negative direction processing reference surface at the inner side of a weir crest fillet of the overflow brick.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Referring to fig. 1 and 2, the molten glass overflows from the overflow brick overflow groove in the middle of the formed overflow brick 1, flows to the inclined plane overflow surface along the straight plane overflow surface on both sides of the overflow brick over the rounded corner at the weir crest of the overflow brick, and merges into the substrate glass at the tip of the overflow brick; the large and small two-end step surfaces are height direction reference surfaces and supporting surfaces when the overflow bricks are assembled in the forming furnace, and in order to ensure the assembly precision, the step surfaces are used as height references when the weir crest fillet of the overflow bricks is machined.
Referring to fig. 1 and 2, the processing method of the invention comprises the following steps:
step one, setting the length direction of an overflow brick as an X axis, the width direction as a Y axis and the height direction as a Z axis, and establishing an overflow brick weir crest fillet numerical control machining coordinate system 2.
Measuring the actual size of the reference surface of the weir crest fillet in the height direction of the overflow brick, wherein the actual size comprises a size parameter H1 of the processing reference surface of the weir crest fillet in the height direction of a 3-weir crest fillet at the large end of the overflow brick and a size parameter H2 of the processing reference surface of the weir crest fillet in the height direction of a 4-weir crest fillet at the small end of the overflow brick;
step three, comparing the actual measurement size with the design size, firstly, determining the height direction offset direction, secondly, calculating the height direction offset amount, and ensuring the optimal processing clearance amount of fillet processing in the height direction;
measuring the actual size of the outer side reference surface of the weir crest fillet of the overflow brick in the width direction, wherein the actual size comprises 5 size parameters B & lt- & gt of the Y positive direction processing reference surface of the outer side of the weir crest fillet of the overflow brick and 6 size parameters B & lt + & gt of the Y negative direction processing reference surface of the outer side of the weir crest fillet of the overflow brick;
comparing the actual measurement size with the design size, and determining the machining offset direction and the initial offset of the outer side fillet;
step six, measuring the actual size of the inner side reference surface of the width direction of the weir crest fillet of the overflow brick, comprising
The size parameter C + of the Y positive direction processing reference surface on the inner side of the weir crest fillet of the overflow brick and the size parameter C-of the Y negative direction processing reference surface on the inner side of the weir crest fillet of the overflow brick are respectively 7;
step seven, comparing the actual measurement size with the design size, and determining the machining offset direction and the initial offset of the inner side fillet;
and step eight, ensuring the optimal machining gap amount on the inner side and the outer side in the width direction by adopting a method (alignment machining) of gradually approaching the brick body for trial machining.
The numerical control machining method for improving the quality of the weir crest fillet of the overflow brick is an alignment method for judging the offset direction, calculating and determining the offset and gradually drawing close to the brick body to trial machining according to actual measurement data of a machining reference surface.
According to the actual measurement size of the machining reference surface of the weir crest fillet of the overflow brick, the design size is compared, so that the offset direction of the weir crest four-fillet (R1, R2, R3 and R4) of the overflow brick during machining is judged, and the offset is calculated and determined. And (5) performing alignment processing by using a method of gradually drawing the brick body to perform trial processing. After practical application, the method disclosed by the invention can ensure the quality of four fillets at the weir crest of the overflow brick, eliminate the uncontrollable phenomenon in the processing of the fillet at the weir crest, ensure the production period and ensure the quality of the finished product of the overflow brick.
Claims (5)
1. A numerical control machining method for improving the quality of a weir crest fillet of an overflow brick is characterized by comprising the following steps of: the method comprises the following steps:
1) establishing a processing coordinate system, wherein the directions of coordinate axes are respectively the length direction of the overflow brick, the width direction of the overflow brick and the height direction of the overflow brick;
2) respectively carrying out height direction calibration and width direction calibration;
the height direction calibration method comprises the following steps: measuring the actual size of the reference surface of the height direction of the weir crest fillet of the overflow brick, comparing the measured actual size with the design size, determining the offset direction and the offset of the height direction of the weir crest fillet of the overflow brick, and further correcting the processing parameters of the numerical control machine;
the method for calibrating the width direction comprises the following steps: measuring the actual size of the reference surface on the outer side of the weir crest in the width direction of the overflow brick, comparing the measured actual size with the design size, determining the machining offset direction and the initial offset of the outer side of the weir crest fillet of the overflow brick, and further correcting the machining parameters of the numerical control machine; measuring the actual size of the reference surface on the inner side of the weir crest fillet in the width direction of the overflow brick; comparing the measured actual size with the design size, determining the machining offset direction and the initial offset of the inner side of the weir crest fillet of the overflow brick, and further correcting the machining parameters of the numerical control machine;
and 3) carrying out numerical control machining on the weir crest fillet of the overflow brick by adopting a method of gradually drawing the brick body to trial machining.
2. The numerical control machining method for improving the quality of the fillet of the weir crest of the overflow brick as claimed in claim 1, wherein: in the step 1), the length direction of the overflow brick is set as an X axis, the width direction of the overflow brick is set as a Y axis, and the height direction of the overflow brick is set as a Z axis.
3. The numerical control machining method for improving the quality of the fillet of the weir crest of the overflow brick as claimed in claim 1, wherein: in the step 2), the measured actual size of the height direction reference surface of the weir crest fillet of the overflow brick comprises the actual size of the height direction reference surface of the weir crest fillet of the large end of the overflow brick and the actual size of the height direction reference surface of the weir crest fillet of the small end of the overflow brick.
4. The numerical control machining method for improving the quality of the fillet of the weir crest of the overflow brick as claimed in claim 1, wherein: in the step 2), the measured actual dimension of the outer reference surface of the weir crest of the overflow brick in the width direction comprises the actual dimension of the outer reference surface of the weir crest of the two overflow walls of the overflow brick in the width direction of the weir crest of the overflow brick.
5. The numerical control machining method for improving the quality of the fillet of the weir crest of the overflow brick as claimed in claim 1, wherein: in the step 2), the measured actual sizes of the inner reference surfaces of the weir tops of the overflow bricks in the width direction comprise the actual sizes of the inner reference surfaces of the weir tops of the two overflow walls of the overflow bricks in the width direction of the weir tops of the overflow bricks.
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| CN109657263B (en) * | 2018-10-29 | 2023-03-31 | 彩虹显示器件股份有限公司 | Design method for width, height and wall thickness of overflow brick inlet groove |
| CN113771199B (en) * | 2021-09-17 | 2023-03-21 | 甘肃光轩高端装备产业有限公司 | Method for processing overflow brick |
| CN115446988B (en) * | 2022-07-28 | 2024-07-23 | 陕西彩虹工业智能科技有限公司 | Processing method of flexible glass overflow brick |
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| AU3294197A (en) * | 1996-06-06 | 1998-01-05 | Boeing Company, The | Method for improving the accuracy of machines |
| DE19857364A1 (en) * | 1998-12-11 | 2000-06-29 | Junker Erwin Maschf Gmbh | Process and grinding machine for process control when peeling a workpiece |
| JP4621605B2 (en) * | 2006-02-24 | 2011-01-26 | 中村留精密工業株式会社 | Method for measuring and correcting machining dimension in chamfering device for plate material |
| CN102601728B (en) * | 2012-03-28 | 2014-04-16 | 山东大学 | Automatic compensation method for clamping errors for peripheral grinding of numerically controlled indexable blade |
| CN102999010A (en) * | 2012-10-15 | 2013-03-27 | 沈阳黎明航空发动机(集团)有限责任公司 | Numerical control machining method for automatically modifying compensation values of cutters |
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Application publication date: 20180918 Assignee: Hunan Shaohong special glass Co.,Ltd. Assignor: CAIHONG GROUP Co.,Ltd. Contract record no.: X2023980042112 Denomination of invention: A CNC machining method for improving the quality of overflow brick weir top fillet Granted publication date: 20200731 License type: Common License Record date: 20230922 |
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