CN102322818A - Method for measuring VB (visual basic) value of mechanical processing turning insert by optical three-dimensional shape instrument. - Google Patents
Method for measuring VB (visual basic) value of mechanical processing turning insert by optical three-dimensional shape instrument. Download PDFInfo
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- CN102322818A CN102322818A CN201110229509A CN201110229509A CN102322818A CN 102322818 A CN102322818 A CN 102322818A CN 201110229509 A CN201110229509 A CN 201110229509A CN 201110229509 A CN201110229509 A CN 201110229509A CN 102322818 A CN102322818 A CN 102322818A
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Abstract
The invention provides a method for measuring a VB (visual basic) value of a mechanical processing turning insert by optical three-dimensional shape instrument, which is characterized in that the optical three-dimensional topography instrument is used for scanning the back tool surface of a tool blade, the obtained topography data is stored into a computer and is amplified by 100 times by computer software to be output into pictures, outline lines before and after the abrasion are described and overlapped, the VB value of the pictures is measured through a meter ruler, and the value is converted into the VB value of the turning tool blade according to the amplification factor.
Description
Technical field
The present invention relates to measuring method, particularly process the method for turning insert VB value with optics three-dimensional appearance appearance measurement mechanical with optics three-dimensional appearance appearance measurement mechanical processing turning insert wear of the tool flank belt wear amount.
Background technology
The abrasion condition of turning cutting tool influences the dimensional accuracy and the surface quality of workpiece, the serviceable life of decision cutter.Related standards is like standard GB/T16461-1996 " single-blade turning cutting tool durability test "; Regulation is confirmed " blunt standard " according to the average abrasion amount in the middle of the cutter wear of the tool flank band; Be that wear of the tool flank band center section average abrasion amount allows the maximal value that reaches; Represent with VB, as shown in Figure 1.The VB value of measuring cutter is all significant for cutter rational Application and cutter research.In cutter was produced, the VB value can be used as effective basis for estimation of cutting performance.In cutter and Research on Surface Modification thereof, can find the rule of tool wear according to cutter VB value changing value in time.
But along with Development on NC Technology, very big variation has also taken place at aspects such as geometric configuration, surface structure and processing characteristicies in turning processing blade.The most outstanding characteristic is: the cutting edge of turning insert often no longer is a straight line, but multi-form curve.So, when measuring VB, be difficult to accurately to confirm the edge of knife face behind the turning insert master.Simultaneously, the method for traditional measurement VB generally is the optical microscope through the band scale.During measurement, back knife face is difficult to guarantee perpendicular to the microscope camera lens, and when the polishing scratch degree of depth of turning insert wear of the tool flank band less (several micron), observation by light microscope can't accurately be judged rubstrip, can't accurately measure VB numerical value.
Summary of the invention
The present invention proposes a kind of method of measuring turning insert VB numerical value with optics three-dimensional appearance appearance.It is characterized in that with knife face behind the optics three-dimensional appearance appearance scanning blade; The topographic data that obtains is stored in computing machine; Amplify 100 times by computer software and be output as picture; Describe, the outline line before and after the overlapping wearing and tearing, measure picture VB numerical value with meter ruler, be scaled the VB numerical value of turning insert by enlargement factor.
Optical 3-dimensional pattern appearance is the scientific instrument that are used to measure the test specimens surface topography, adopts and interferes or the contactless mensuration three-dimensional surface shape of confocal principle, is a kind of digitized surface measurement technology.Have that survey area is big, measuring accuracy and automaticity advantages of higher, can accurately measure the three-dimensional wear condition of turning processing blade.Adopt proper technique to handle and be applicable to accurate measurement VB numerical value.
The present invention has changed commonly used in the past pass through and has been with knife face behind the microscopic examination blade of scale, and immediate observation reads the method for scale immediately.The present invention measures pattern with the optical morphology appearance earlier, and data are stored in computing machine, and then handles, and enlargement factor can reach 100 times, and precision is very high; The wearing and tearing that classic method is measured are more serious; And main smear metal is the blade of a flat level, and is more convenient, can't measure wearing and tearing smaller; Perhaps main cutting edge is the blade of non-rectilinear section, and main cutting edge outline line was also inconvenient before and after its key was the comparison tool wear.Data picture before and after the present invention will be worn and torn is overlapping, and the data plot before and after the wearing and tearing is overlapping, has solved this problem; Classic method can't guarantee that measured back knife face is perpendicular to incident ray.X in the time of can proofreading and correct blade and put with optics three-dimensional appearance appearance, the height of y both direction make measurement more accurate.
The present invention at first will obtain before the wearing and tearing of blade main cutting edge and the outline line after the wearing and tearing.As shown in Figure 3, the present invention stipulates to intersect the crossing rib that rib refers in particular to major and minor back knife face.Before wearing and tearing front-wheel profile is blade abrasion, the line segment that main cutting edge and crossing rib surround; After regulation wearing and tearing trailing wheel profile was blade abrasion, the not wearing part of rubstrip outline line and crossing rib, main cutting edge be wearing part not, these three line segments that line segment surrounds.Pattern through knife face behind the optical 3-dimensional pattern appearance scanning blade master; Obtain wearing and tearing front and back digitizing tri-dimensional picture; With computing machine according to 100 times enlargement factor printout picture on transparent or semitransparent paper; With the superfine pen wearing and tearing front and rear wheel profile that on two width of cloth pictures, draws, then with cutting edge not the not wearing part of wearing part and crossing rib be benchmark, two width of cloth pictures are overlapping; Through after the VB value on the meter ruler survey sheet,, converse actual VB value at last divided by enlargement factor 100.
Characteristics of the present invention are to guarantee the accurate measurement of VB value under various turning insert models and the multiple blade abrasion situation:
Knife face horizontal level behind A, the assurance blade master (perpendicular to the test incident ray)
B, no matter how the profile of cutter main cutting edge changes, and can both measure VB value (not receiving the influence of the profile variations of main cutting edge during the VB pH-value determination pH)
C, measuring accuracy height, very shallow in the polishing scratch degree of depth, even can measure the VB value under the situation of having only some microns
Description of drawings
Figure1 is the turning insert synoptic diagram
Figure2 is knife face synoptic diagram behind the turning insert
Figure3 are the outline line synoptic diagram before and after the turning insert wearing and tearing
Figure4 are blade before the wearing and tearing
Figure5 are wearing and tearing back blade
Figure6 is overlapping bad blade
FigureThe blade that 7 attach most importance to folds
Figure8 for dividing eroded area
Figure9 are the measurement of VBB value
The crossing rib of knife face, minor flank behind a master
E master's wear of the tool flank band
Knife face behind the g master
D cuts the main sword of cutting
The c minor flank
C is the C district, is the curved portion at cutting edge point of a knife place
B is the B district, is between C district and the A district, keeps the cutting edge part of straight line
A is the A district, and length is from 1/4th of the b of point of a knife cutting edge wearing and tearing length farthest
The N main cutting edge exceeds blade and workpiece is in contact with one another the part outside the area, is about the 1-2 millimeter along main cutting edge, and its wearing and tearing are the notch wear, notching form
The F main cutting edge is wearing part not
The major and minor back of L knife face intersects the not wearing part of rib
The line segment that main cutting edge and crossing rib surround before the lineB blade abrasion
Behind the lineA blade abrasion, the not wearing part of rubstrip outline line and crossing rib, main cutting edge be wearing part not, three line segments that line segment surrounds
VB
BKnife face B district average abrasion amount behind the blade master
VB
BmaxThe maximum VB numerical value in knife face B district behind the blade master
VB
NKnife face N district average abrasion amount behind the blade master
B cutting edge wearing and tearing length
Embodiment:
(1) knife face behind the turning insert master is fixed in the sample bench of three-dimensional appearance appearance up.X on the knife face of back, the y direction is swept the straight line of a 2-3 millimeter respectively.If find the output straight inclined, then adjust sample bench.Continue the x of scanning and adjustment knife face behind the turning insert master, the y direction is all perpendicular to the incident light of three-dimensional appearance appearance, guarantees knife face level behind the blade master.
(2) x scanning direction length, y scanning direction length, step-length, the frequency parameter of three-dimensional appearance appearance are set, then the back knife face are carried out face scanning.Reasonable parameter should guarantee: should stay certain space around the blade, be convenient to confirm the profile of blade.Can be through the method for observing with optical lens earlier, the estimation scan scope, the sweep limit of setting should be able to comprise the wear of the tool flank band.For the information of collection wear surface polishing scratch outline line as much as possible, as far as possible little step-length is set.But, can require to reduce step-length according to reality sometimes in order to increase work efficiency.
(3) open data with optics three-dimensional appearance appearance data processing software, the noise operation is evened up, removed to data plot, and preserve the three-dimensional data picture.
(4) forward and backward in blade machining or cutting experiment, according to preceding 3 steps, the back knife face of scanning car blade, the back knife face three-dimensional data picture behind the original wear of the tool flank of acquisition blade.
(5) respectively the back knife face three-dimensional data picture after blade original back knife face and the wearing and tearing is amplified 100 times with image processing software, set resolution, and to output on the transparent or semitransparent paper with the identical resolution printing of preservation image.
(6) with the pen of 1 millimeter of diameter on two drawings, describe to wear and tear front-wheel profile and wearing and tearing trailing wheel profile.Keep drawing smooth when describing.
(7) with the wearing and tearing front-wheel profile of two width of cloth pictures and wearing and tearing trailing wheel profile along cutting edge wearing part not, and the not wearing part of crossing rib overlaps.If coincidence error is 1 millimeter, then actual error is 1/100 millimeter.
(8) mark off C, B, A, N district, selecting the zone of measurements needs, use minimum scale unit according to abrasion condition is the distance between outline line on 1 millimeter the ruler measurement picture.Following relation is arranged: ruler measurement obtains length ÷ enlargement factor=physical length.
Measure certain CNMG120404 type blade with the confocal three-dimensional appearance appearance of white light.Machining condition: workpiece is No. 45 steel that quench, 500 rev/mins of cutting spindle rotating speeds, 480 millimeters of strokes, 2.5 millimeters of the smear metal degree of depth, speed of feed 120 mm/second.Blade abrasion is also not serious, so should be with VB
BValue is made the blunt standard.Before wearing and tearing, 2 * 0.8 millimeters of measurement ranges are set, the left side and the certain white space of top Ge Liu, adjustment three-dimensional appearance appearance sample bench measures data.In optical 3-dimensional pattern appearance data processing software, open three-dimensional appearance appearance data, preserve picture.In image processing software, open picture, image parameter is set is: document size: 200 * 80 millimeters; Resolution: 79 pixels/centimetre.Preserve picture.Behind the wear test, with same parameter, the back picture obtains wearing and tearing.Shown in accompanying drawing 4, accompanying drawing 5, respectively with 79 pixels/centimetre resolution printing two width of cloth pictures to transparent paper, retouch out blade abrasion front-wheel profile and wearing and tearing trailing wheel profile.
Like accompanying drawing 2, print two width of cloth pictures to transparent paper.Behind the outline line of before describing to wear and tear and wearing and tearing back data plot, two width of cloth pictures are overlapping with method of the present invention.Shown in accompanying drawing 6, this kind situation is not have overlapping good situation.Correct overlapping result should be shown in accompanying drawing 7.Shown in accompanying drawing 8, the division eroded area is C, B, A, four zones of N.Then, shown in accompanying drawing 9, the use minimum scale is that 1 millimeter meter ruler obtains measuring VB
BBe worth 5 to 7 times, average then, obtain VB
B=15 millimeters, promptly actual VB
B=0.15 millimeter.
Claims (6)
1. method of measuring turning insert VB numerical value with optics three-dimensional appearance appearance; It is characterized in that with knife face behind the optics three-dimensional appearance appearance scanning blade; The topographic data that obtains is stored in computing machine, amplifies 100 times by computer software and be output as picture, describe, overlapping wearing and tearing front-wheel profile and wearing and tearing trailing wheel profile; Measure picture VB numerical value with meter ruler, be scaled the VB numerical value of turning insert by enlargement factor.
2. meet a kind of method with optics three-dimensional appearance appearance measurement turning insert VB numerical value of claim 1, it is characterized in that the software of Computer Processing topographic data can convert topographic data into the computing machine picture, this picture is exported by computing machine after amplifying.
3. meet a kind of method of claim 1 and 2, it is characterized in that computer printout output is with transparent or onionskin with optics three-dimensional appearance appearance measurement turning insert VB numerical value.
4. meet a kind of method of claim 1 and 2, it is characterized in that computing machine picture amplification multiple is 100 times with optics three-dimensional appearance appearance measurement turning insert VB numerical value.
5. a kind of method that meets claim 1 with optics three-dimensional appearance appearance measurement turning insert VB numerical value, before the front-wheel profile that it is characterized in that wearing and tearing is blade abrasion, the line segment that main cutting edge and crossing rib surround; After wearing and tearing trailing wheel profile was blade abrasion, rubstrip outline line, the not wearing part that intersects rib, main cutting edge be wearing part not, three line segments that line segment surrounds.
6. what meet claim 1 a kind ofly measures the method for turning insert VB numerical value with optics three-dimensional appearance appearance, it is characterized in that overlapping outline line be with the picture of output print before and after the wearing and tearing along cutting edge the not wearing part of not wearing part and crossing rib overlapping.
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| CN201110229509A CN102322818A (en) | 2011-08-11 | 2011-08-11 | Method for measuring VB (visual basic) value of mechanical processing turning insert by optical three-dimensional shape instrument. |
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| CN201110229509A CN102322818A (en) | 2011-08-11 | 2011-08-11 | Method for measuring VB (visual basic) value of mechanical processing turning insert by optical three-dimensional shape instrument. |
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Cited By (2)
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| CN115741234A (en) * | 2022-11-24 | 2023-03-07 | 成都飞机工业（集团）有限责任公司 | Measuring method for cutter face abrasion loss of milling cutter |
| CN116572078A (en) * | 2023-07-14 | 2023-08-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for detecting abrasion of turning tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115741234A (en) * | 2022-11-24 | 2023-03-07 | 成都飞机工业（集团）有限责任公司 | Measuring method for cutter face abrasion loss of milling cutter |
| CN116572078A (en) * | 2023-07-14 | 2023-08-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for detecting abrasion of turning tool |
| CN116572078B (en) * | 2023-07-14 | 2023-10-17 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for detecting abrasion of turning tool |
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Application publication date: 20120118 |