CN115213736A - Cast part blank allowance homogenization processing method based on visual detection - Google Patents
Cast part blank allowance homogenization processing method based on visual detection Download PDFInfo
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- CN115213736A CN115213736A CN202210869370.3A CN202210869370A CN115213736A CN 115213736 A CN115213736 A CN 115213736A CN 202210869370 A CN202210869370 A CN 202210869370A CN 115213736 A CN115213736 A CN 115213736A
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- allowance
- casting
- processing method
- method based
- cast part
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- 230000000007 visual effect Effects 0.000 title claims abstract description 18
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000000265 homogenisation Methods 0.000 title claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 42
- 238000003754 machining Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 11
- 238000011179 visual inspection Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to the field of B23Q17/20, in particular to a casting part blank allowance homogenization processing method based on visual detection, in particular to a pose detection of a processing allowance in a casting to be detected by using a visual recognition device.
Description
Technical Field
The invention relates to the field of B23Q17/20, in particular to a visual inspection-based method for homogenizing blank allowance of a cast part.
Background
The casting is a technological process of smelting metal into liquid meeting certain requirements, pouring the liquid into a casting mold, cooling, solidifying and cleaning to obtain a casting with a preset shape, size and performance. The cast blank is nearly formed, so that the purposes of no machining or less machining are achieved, the cost is reduced, and the manufacturing time is reduced to a certain extent.
Chinese patent CN109531273B discloses a casting cabin section processing method based on a precision detection technology, which mainly aims at the defects that the casting cabin section is heated in the casting process and the wall thickness is insufficient, the appearance allowance is insufficient and the like, and aims to provide a casting cabin section processing method based on the precision detection technology so as to ensure the processing and detection precision of the casting cabin section; chinese patent CN109079584A discloses a method for aligning machining datum of precision casting parts, which comprises the steps of adhering a datum block on a part, then establishing a rough datum, and after scanning the shape by laser, establishing the machining datum of the casting part by comparing the laser with a theoretical model, thereby solving the problems of low precision when a bench worker marks and incapability of detecting the allowance of a profile; the above method provides a corresponding method for different casting elements to solve the problems of the workpieces during the casting process, but is not suitable for solving the problem of uneven machining allowance of the blank of the cast part after heat treatment.
Therefore, the invention provides a method for homogenizing the blank allowance of the cast part based on visual detection aiming at the problem of uneven blank allowance of the parts such as a cast casing and the like after heat treatment, which improves the machining precision of the cast part and the machining efficiency of the part.
Disclosure of Invention
The invention provides a visual inspection-based method for homogenizing blank allowance of a cast part, which at least comprises the following steps:
s1, calibrating a casting to be measured with a basic multi-degree-of-freedom pose;
s2, determining standard values and actual values corresponding to uniform allowance of the casting to be detected at each position;
s3, calculating a machining allowance value required by the cutter through calculating allowance deviation between the standard value and the actual value;
and S4, determining whether the cutter carries out secondary machining or not according to the allowance deviation.
As a preferable technical solution, the shape and size of the casting to be measured in step S1 are not limited.
As a preferred technical solution, the step S1 specifically includes: setting a workpiece coordinate system in the casting to be detected, and calibrating the multi-degree-of-freedom position and pose of the feature points in the casting to be detected based on the workpiece coordinate system; preferably, the multi-degree-of-freedom pose calibration is realized through a visual recognition device; preferably, the visual recognition device is a visual sensor. Preferably, the characteristic points in the casting to be measured at least comprise edge end points of the casting to be measured.
As a preferred technical solution, the step S2 specifically includes: acquiring a reference position coordinate of the casting to be detected based on the reference characteristics, and determining a standard value and an actual value corresponding to uniform allowance of the casting to be detected at each position according to the reference position coordinate;
as a preferable technical solution, in the step S3, the value of the machining allowance required by the tool is interpolated by using an interpolation-based fitting method.
As a preferable technical solution, in the step S4, whether the tool is subjected to secondary processing is judged according to whether the allowance deviation exceeds a formulated threshold range; preferably, the specific criterion of whether the tool is subjected to the secondary processing in step S4 is: if the allowance deviation is within the range of the established threshold value, the secondary processing of the cutter is not carried out; if the allowance deviation exceeds the set threshold range, replanning the feeding path of the cutter on the exceeding part; thereby improving the homogenization efficiency of the machining allowance of the casting blank to be measured.
Has the beneficial effects that:
1. the invention provides a method for homogenizing the blank allowance of a cast part based on visual detection, aiming at the problem of uneven blank allowance of parts such as a cast casing and the like after heat treatment, so that the machining precision of the cast part is effectively improved, and the machining efficiency of the part is improved.
2. The invention provides a method for homogenizing calculation of blank machining allowance and optimizing a cutter feeding path, which is used for detecting the pose of the machining allowance in a casting to be detected by using a visual recognition device.
Detailed Description
Example 1
The embodiment 1 of the invention provides a cast part blank allowance homogenization processing method based on visual detection, which comprises the following steps of:
s1, calibrating a casting to be measured with a basic multi-degree-of-freedom pose;
s2, determining standard values and actual values corresponding to uniform allowance of the casting to be detected at each position;
s3, calculating a machining allowance value required by the cutter through calculating allowance deviation between the standard value and the actual value;
and S4, determining whether the cutter carries out secondary machining or not according to the allowance deviation.
And the casting to be detected in the step S1 is a casing.
The step S1 specifically comprises the following steps: setting a workpiece coordinate system in the casting to be detected, and calibrating the multi-degree-of-freedom pose of the feature points in the casting to be detected based on the workpiece coordinate system; the multi-degree-of-freedom pose calibration is realized through a visual recognition device; the visual recognition device is a visual sensor. The characteristic points in the casting to be detected comprise edge end points of the casting to be detected.
The step S2 specifically comprises the following steps: acquiring a reference position coordinate of the casting to be detected based on the reference characteristics, and determining a standard value and an actual value corresponding to uniform allowance of the casting to be detected at each position according to the reference position coordinate;
and in the step S3, interpolation calculation is carried out on the machining allowance value required by the cutter by adopting an interpolation fitting mode.
The specific judgment standard of whether the tool is subjected to secondary processing in the step S4 is as follows: if the allowance deviation is within the range of the established threshold value, the secondary processing of the cutter is not carried out; and if the allowance deviation exceeds the set threshold range, replanning the feed path of the cutter on the exceeding part.
Claims (10)
1. A cast part blank allowance homogenization processing method based on visual detection is characterized by at least comprising the following steps:
s1, calibrating a casting to be measured with a basic multi-degree-of-freedom pose;
s2, determining standard values and actual values corresponding to uniform allowance of the casting to be detected at each position;
s3, calculating a machining allowance value required by the cutter through calculating allowance deviation between the standard value and the actual value;
and S4, determining whether the cutter carries out secondary machining or not according to the allowance deviation.
2. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 1, wherein the shape and size of the casting to be measured in the step S1 are not limited.
3. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 1, wherein the step S1 is specifically: and setting a workpiece coordinate system in the casting to be detected, and calibrating the multi-degree-of-freedom pose of the feature points in the casting to be detected based on the workpiece coordinate system.
4. The cast part blank allowance homogenization processing method based on the visual inspection as claimed in claim 3, wherein the multi-degree-of-freedom pose calibration is realized by a visual identification device.
5. The cast part blank allowance uniformization processing method based on the visual inspection is characterized in that the visual recognition device is a visual sensor.
6. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 5, wherein the characteristic points in the casting to be tested at least comprise edge end points of the casting to be tested.
7. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 1, wherein the step S2 is specifically: and acquiring a reference position coordinate of the casting to be detected based on the reference characteristic, and determining a standard value and an actual value corresponding to uniform allowance of the casting to be detected at each position according to the reference position coordinate.
8. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 7, wherein the required processing allowance value of the tool in the step S3 is interpolated by using an interpolation-based fitting method.
9. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 8, wherein whether the tool performs the secondary processing in the step S4 is judged according to whether the allowance deviation exceeds a formulated threshold range.
10. The cast part blank allowance uniformization processing method based on the visual inspection as claimed in claim 9, wherein the specific determination criteria of whether the tool performs the secondary processing in the step S4 are as follows: if the allowance deviation is within the range of the established threshold value, the secondary processing of the cutter is not carried out; and if the allowance deviation exceeds the set threshold range, replanning the feed path of the cutter on the exceeding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210869370.3A CN115213736A (en) | 2022-07-22 | 2022-07-22 | Cast part blank allowance homogenization processing method based on visual detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210869370.3A CN115213736A (en) | 2022-07-22 | 2022-07-22 | Cast part blank allowance homogenization processing method based on visual detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115213736A true CN115213736A (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210869370.3A Pending CN115213736A (en) | 2022-07-22 | 2022-07-22 | Cast part blank allowance homogenization processing method based on visual detection |
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|---|---|---|---|---|
| CN101634544A (en) * | 2009-09-02 | 2010-01-27 | 郑州辰维科技有限公司 | Water turbine blade blank profile measuring and machining allowance analyzing method |
| JP2014013227A (en) * | 2012-06-06 | 2014-01-23 | Aisin Seiki Co Ltd | Rough cast material inspection device and rough cast material inspection method |
| KR20150014868A (en) * | 2013-07-30 | 2015-02-09 | 나카무라 토메 세이미쓰고교 가부시키가이샤 | Method of uniformizing chipping allowance and marginal grinder of plate material |
| CN110434671A (en) * | 2019-07-25 | 2019-11-12 | 王东 | A kind of cast member surface machining track calibration method based on pattern measurement |
| CN111251189A (en) * | 2019-11-12 | 2020-06-09 | 长沙长泰机器人有限公司 | Visual positioning method for casting polishing |
| CN111266803A (en) * | 2019-12-31 | 2020-06-12 | 湖北三江航天红阳机电有限公司 | Processing method of thin-wall special-shaped metal casting |
| CN112614098A (en) * | 2020-12-17 | 2021-04-06 | 大连理工大学 | Blank positioning and machining allowance analysis method based on augmented reality |
| CN112817271A (en) * | 2020-12-29 | 2021-05-18 | 苏州千机智能技术有限公司 | Method for optimizing machining allowance of casting case blank based on-machine measurement |
| CN114200891A (en) * | 2021-12-10 | 2022-03-18 | 上海交通大学 | Model-free cylindrical casting inner cavity milling system and track planning method |
-
2022
- 2022-07-22 CN CN202210869370.3A patent/CN115213736A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634544A (en) * | 2009-09-02 | 2010-01-27 | 郑州辰维科技有限公司 | Water turbine blade blank profile measuring and machining allowance analyzing method |
| JP2014013227A (en) * | 2012-06-06 | 2014-01-23 | Aisin Seiki Co Ltd | Rough cast material inspection device and rough cast material inspection method |
| KR20150014868A (en) * | 2013-07-30 | 2015-02-09 | 나카무라 토메 세이미쓰고교 가부시키가이샤 | Method of uniformizing chipping allowance and marginal grinder of plate material |
| CN110434671A (en) * | 2019-07-25 | 2019-11-12 | 王东 | A kind of cast member surface machining track calibration method based on pattern measurement |
| CN111251189A (en) * | 2019-11-12 | 2020-06-09 | 长沙长泰机器人有限公司 | Visual positioning method for casting polishing |
| CN111266803A (en) * | 2019-12-31 | 2020-06-12 | 湖北三江航天红阳机电有限公司 | Processing method of thin-wall special-shaped metal casting |
| CN112614098A (en) * | 2020-12-17 | 2021-04-06 | 大连理工大学 | Blank positioning and machining allowance analysis method based on augmented reality |
| CN112817271A (en) * | 2020-12-29 | 2021-05-18 | 苏州千机智能技术有限公司 | Method for optimizing machining allowance of casting case blank based on-machine measurement |
| CN114200891A (en) * | 2021-12-10 | 2022-03-18 | 上海交通大学 | Model-free cylindrical casting inner cavity milling system and track planning method |
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