Summary of the invention
Technical matters to be solved by this invention is: for prior art deficiency, provide a kind of and can carry out UT (Ultrasonic Testing) to the finished wheel wheel rim inside on production line quickly and easily, ensure that the defect that finished wheel is existed can not occur undetected, reduce defect rate of failing to report, the wheel automatic ultrasonic flaw-detecting method of finally improving the quality of products.
Solve above-described technical matters, the technical scheme that the present invention takes is:
The present invention is a kind of wheel automatic ultrasonic flaw-detecting method, and the step of described method of detection comprises:
Rim for automobile wheel automatic ultrasonic flaw-detecting method, the step of described method of detection comprises:
1) the sample wheel wheel rim that makes wheels, spline wheel wheel wheel rim comprises tread I and medial surface I, within described tread I is all arranged on satisfactory scope corresponding to radially multiple artificial defects and medial surface I corresponding to axial multiple artificial defects;
2) near the spline wheel wheel tread I of wheel rim and the position of medial surface I, multiple flaw detections probe I (4) and multiple flaw detection probe II are set respectively, described flaw detection probe I and flaw detection probe II are respectively to tread I and the corresponding axial multiple artificial defects of medial surface I and the radially multiple artificial defect also data acquisition of detecting a flaw;
3) multiple flaw detections probe I and multiple flaw detection probe II are placed on respectively to tread II and the medial surface II position near finished wheel wheel rim, the finished wheel wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread II and the medial surface II respectively also data acquisition of detect a flaw;
4) spline wheel wheel rim data and finished wheel wheel rim data are contrasted, finished wheel wheel rim data are within spline wheel wheel wheel rim data area, finished wheel wheel rim meets the requirements, within finished wheel wheel rim data exceed spline wheel wheel wheel rim data area, finished wheel wheel rim is undesirable.
Preferably, described finished wheel is on automatic production line, the finished wheel wheel rim detection position of production line arranges probe bracket I and probe bracket II, flaw detection probe I and flaw detection probe II are arranged on respectively in probe bracket I and probe bracket II, and flaw detection probe I and flaw detection probe II are set to distinguish the structure of adjusting position and angle.
Preferably, described multiple flaw detection probe I are set to the structure of the tread II that can cover finished wheel wheel rim, and flaw detection probe II is set to the structure of the medial surface II that can cover finished wheel wheel rim.
Preferably, when described multiple flaw detection probe I are detected a flaw to the tread II of finished wheel wheel rim, described finished wheel is set to the structure that can rotate on rotary carrier roller, when multiple flaw detection probe II are detected a flaw to the medial surface II of finished wheel wheel rim, finished wheel is set to the structure that can rotate on rotary carrier roller.
Preferably, when described multiple flaw detection probe I are detected a flaw to the tread II of finished wheel wheel rim, the coverage rate of multiple flaw detection probe I is set to partly overlapping structure, when multiple flaw detection probe II are detected a flaw to the medial surface II of finished wheel wheel rim, the coverage rate of multiple flaw detection probe II is set to partly overlapping structure.
Preferably, the wheel rim inherent vice that described flaw detection probe I and flaw detection probe II comprise tread I and medial surface I is respectively carried out after data acquisition, data store in the defectoscope being attached thereto, the wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread II and medial surface II is respectively carried out after data acquisition, and the data that the data of finished wheel wheel rim and spline wheel are taken turns wheel rim by the described defectoscope being attached thereto contrast.
Preferably, when described defectoscope contrasts the data of the data of finished wheel wheel rim and spline wheel wheel wheel rim, finished wheel wheel rim is satisfactory, and production line advances automatically, and next finished wheel advances to detection position, finished wheel wheel rim is undesirable, defectoscope automatic alarm, production line does not readvance, and site operation personnel takes down undesirable finished wheel, defectoscope is reported to the police and is automatically terminated, and production line advances automatically.
Preferably, when the wheel rim inherent vice that described flaw detection probe I and flaw detection probe II comprise tread II and medial surface II is respectively carried out data acquisition, flaw detection probe I and flaw detection probe II are with respect to the position of reference point I H2 and the reference point II D1 of finished wheel wheel rim, corresponding identical one by one with respect to the position of the reference point I on spline wheel wheel wheel rim and reference point II with flaw detection probe I and flaw detection probe II 5.
Preferably, described flaw detection probe I and flaw detection probe II are all set to adjust installation site and with respect to the structure of adjusting angle within the scope of 30 ° of upright positions.
Adopt technical scheme of the present invention, can obtain following beneficial effect:
Wheel automatic ultrasonic flaw-detecting method of the present invention, detection position at automatic assembly line arranges probe bracket, flaw detection probe I and flaw detection probe II are installed respectively on probe bracket, flaw detection probe I and flaw detection probe II are by defectoscope control, by above-mentioned structure and method, the wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread I and medial surface I is respectively carried out data acquisition, then the wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread II and medial surface II is respectively carried out data acquisition, spline wheel is taken turns to data with defectoscope and finished wheel data contrast, finished wheel data are within spline wheel wheel data area, finished wheel meets the requirements, within finished wheel data exceed spline wheel wheel data area, finished wheel is undesirable, so, by rim for automobile wheel automatic ultrasonic flaw-detecting method of the present invention, can carry out UT (Ultrasonic Testing) to the finished wheel wheel rim inside on production line quickly and easily, thereby reduce finished product rim for automobile wheel inherent vice rate of failing to report, ensure that the defect that finished wheel wheel rim is existed can not occur undetected, the final wheel product quality that improves.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as effect and the principle of work etc. of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part:
As shown in accompanying drawing 1-accompanying drawing 5, the present invention is a kind of rim for automobile wheel automatic ultrasonic flaw-detecting method, it is characterized in that: the step of described method of detection comprises:
1) the sample wheel wheel rim 1 that makes wheels, spline wheel wheel wheel rim 1 comprises tread I 2 and medial surface I 3, within described tread I 2 is all arranged on satisfactory scope corresponding to radially multiple artificial defects 14 and medial surface I 3 corresponding to axial multiple artificial defects 13;
2) near the spline wheel wheel tread I 2 of wheel rim 1 and the position of medial surface I 3, multiple flaw detections probe I 4 and multiple flaw detection probe II 5 are set respectively, described flaw detection probe I 4 and flaw detection probe II 5 are respectively to tread I 2 and the corresponding axial multiple artificial defects 13 of medial surface I 3 and the radially multiple artificial defect 14 also data acquisition of detecting a flaw;
3) multiple flaw detections probe I 4 and multiple flaw detection probe II 5 are placed on respectively to tread II 7 and medial surface II 8 positions near finished wheel wheel rim 6, finished wheel wheel rim 6 inherent vices that flaw detection probe I 4 and flaw detection probe II 5 comprise tread II 7 and the medial surface II 8 respectively also data acquisition of detect a flaw;
4) spline wheel wheel rim 1 data and finished wheel wheel rim 6 data are contrasted, finished wheel wheel rim 6 data are within spline wheel wheel wheel rim 1 data area, finished wheel wheel rim 6 meets the requirements, within finished wheel wheel rim 6 data exceed wheel sample wheel rim 1 data area, finished wheel wheel rim 6 is undesirable.
Preferably, described finished wheel 15 is on automatic production line, finished wheel wheel rim 6 detection positions of production line arrange probe bracket I 10 and probe bracket II 11, flaw detection probe I 4 and flaw detection probe II 5 are arranged on respectively in probe bracket II 11 and probe bracket I 10, and flaw detection probe I 4 and flaw detection probe II 5 are set to distinguish the structure of adjusting position and angle.
Preferably, described multiple flaw detection probe I 4 are set to the structure of the tread II 7 that can cover finished wheel wheel rim 6, and flaw detection probe II 5 is set to the structure of the medial surface II 8 that can cover finished wheel wheel rim 6.
Preferably, when described multiple flaw detection probe I 4 are detected a flaw to the tread II 7 of finished wheel wheel rim 6, described finished wheel 15 is set to the structure that can rotate on rotary carrier roller 9, when described multiple flaw detection probe II 5 are detected a flaw to the medial surface II 8 of finished wheel wheel rim 6, described finished wheel 15 is set to the structure that can rotate on rotary carrier roller 9.
Preferably, when described multiple flaw detection probe I 4 are detected a flaw to the tread II 7 of finished wheel wheel rim 6, the coverage rate of multiple flaw detection probe I 4 is set to partly overlapping structure, when multiple flaw detection probe II 5 are detected a flaw to the medial surface II 8 of finished wheel wheel rim 6, the coverage rate of multiple flaw detection probe II 5 is set to partly overlapping structure.
Preferably, the wheel rim inherent vice that described flaw detection probe I 4 and flaw detection probe II 5 comprise tread I 2 and medial surface I 3 is respectively carried out after data acquisition, described data store in the defectoscope 12 being attached thereto, the wheel rim inherent vice that flaw detection probe I 4 and flaw detection probe II 5 comprise tread II 7 and medial surface II 8 is respectively carried out after data acquisition, and the data that the data of finished wheel wheel rim 6 and spline wheel are taken turns wheel rim 1 by the described defectoscope being attached thereto 12 contrast.
Preferably, when described defectoscope 12 contrasts the data of the data of finished wheel wheel rim 6 and spline wheel wheel wheel rim 1, finished wheel wheel rim 6 is satisfactory, and production line advances automatically, and next finished wheel 15 advances to detecting position, finished wheel wheel rim 6 is undesirable, defectoscope 12 automatic alarms, production line does not readvance, and site operation personnel takes down undesirable finished wheel 15, defectoscope 12 is reported to the police and is automatically terminated, and production line advances automatically.Production line is pipelining, and method of the present invention is directly in production line application.
Preferably, when the wheel rim inherent vice that described flaw detection probe I 4 and flaw detection probe II 5 comprise tread II 7 and medial surface II 8 is respectively carried out data acquisition, flaw detection probe I 4 and flaw detection probe II 5 are with respect to the position of reference point I H2 and the reference point II D1 of finished wheel wheel rim 6, corresponding identical one by one with respect to the position of the reference point I H2 on spline wheel wheel wheel rim 1 and reference point II D1 with flaw detection probe I 4 and flaw detection probe II 5.That is: the relative position that the relative position between flaw detection probe I 4 and flaw detection probe II 5 and spline wheel wheel wheel rim, and flaw detection probe I 4 and flaw detection are popped one's head between II 5 and finished wheel wheel rim is identical.
Preferably, described flaw detection probe I 4 and flaw detection probe II 5 are all set to adjust installation site and with respect to the structure of adjusting angle within the scope of 30 ° of upright positions.Such structure, can adjust the covering position of flaw detection probe I 4 and flaw detection probe II 5 as required flexibly, thereby guarantees that flaw detection probe I 4 and flaw detection probe II 5 can be adapted to the finished wheel of different size in the time detecting, and improve the versatility of probe.
The testing process of rim for automobile wheel automatic ultrasonic flaw-detecting method of the present invention is as described below:
Spline wheel wheel enters the detecting position on production line, the flaw detection probe I 4 of detecting position is taken turns tread I 2 positions of wheel rim 1 in probe bracket II 11 to spline wheel by cylinder moving, utilize the control assembly of probe can finely tune the left and right position of flaw detection probe I 4 in tread I 2; Flaw detection probe II 5 is taken turns medial surface I 3 positions of wheel rim 1 in probe bracket I 10 to spline wheel by cylinder moving, utilize the control assembly of probe can finely tune the upper-lower position of probe I 4 in medial surface I 3.Spline wheel wheel rotates on rotary carrier roller 9, pops one's head in motionless, between probe and spline wheel wheel wheel rim 1 surface of contact, is coupled by water layer, and water layer thickness is about 0.3~0.8mm.
Flaw detection probe I 4 is the frame-type probe of multiple independent probe combinations, comprises 9#~16# probe; Flaw detection probe II 5 is the frame-type probe of multiple independent probe combinations, comprises 1#~8# probe.In two groups of probes, 7#, 8# probe can move up and down in framework, and other probe position in framework is fixed.
Spline wheel wheel wheel rim 1 comprises axial multiple artificial defect 13 and radially multiple artificial defect 14.Artificial defect is the flat-bottom hole of the same diameter of machine tooling.
Spline wheel wheel rotates on rotary carrier roller 9, flaw detection probe I 4 should be able to ensure to detect all radially multiple artificial defects 14 in tread I 2,9#~16# probe arranges warning gate separately in the defectoscope 12 being attached thereto, flaw detection probe II 5 should be able to ensure to detect all axial multiple artificial defects 13 in medial surface I 3, and 1#~8# probe arranges warning gate separately in the defectoscope 12 being attached thereto.
Pop one's head in I 4 and flaw detection probe II 5 respectively to axial multiple artificial defects 13 with radially multiple artificial defect 14 detect a flaw and data acquisition by flaw detection, and then spline wheel wheel leaves carrying roller 9, and data are used for contrasting.
Then finished wheel 15 enters detecting position, on rotary carrier roller 9, rotates, and the probe I 4 of detecting a flaw and flaw detection probe II 5 are in tread II 7 and medial surface II 8, and centre is coupled with water.Defectoscope carries out data acquisition to finished wheel wheel rim 6 inside, and contrast with sample being taken turns to the data of measuring when wheel rim 1 detects, if defectoscope 12 automatic alarms represent that finished product rim for automobile wheel 6 is undesirable, if defectoscope 12 is not reported to the police, represent that finished product rim for automobile wheel 6 meets the requirements.
Due to sample wheel wheel rim 1, wheel rim height dimension may be different diametrically with finished wheel wheel rim 6; Rim width size may be different in the axial direction; May make because wheel external diameter is different diametrically tread curvature difference; Material (attenuation coefficient) may be different; Surfaceness may be different, therefore for making each probe ensure that in the time surveying finished wheel wheel rim the sensitivity when surveying sample and take turns wheel rim is identical, in calibration sample when wheel, should keep flaw detection probe and the good coupling of surface of contact separately, and understand the concrete condition of finished wheel wheel rim 6.
Concrete steps are as follows:
1. calibration flaw detection probe II 5:
1) first adjust the 1# probe in flaw detection probe II 5.Move up and down flaw detection probe II 5, taking the D1 in sample wheel wheel rim 1 as reference point, avoid the impact of D1 chamfering structure, now under 1# probe, there is axial " index aperture 2 " near the D1 5mm of place in sample wheel wheel rim 1, in defectoscope 12, there is the waveform of " index aperture 2 ", adjust and make it reach warning gate height.
2) different from the height of sample wheel wheel rim 1 according to being visited finished wheel wheel rim 6, according to the 2#~6# probe in following method adjustment flaw detection probe II 5
● visited finished wheel wheel rim 6 height=sample wheel wheel rim 1 height: adjusted successively 2#~6# probe, adjusted the artificial defect ripple occurring in 2# in defectoscope 12~6# probe, made it highly all reach warning gate, and close unnecessary probe.
● visited finished wheel wheel rim 6 height > sample wheel wheel rim 1 height: for example: the size of height=3.5 probe of sample wheel wheel rim 1, the size of height=5.5 of finished wheel wheel rim 6 probe.Flaw detection probe II 5 is motionless, adjusts successively 2#, 3# probe, makes the artificial defect wave height occurring in 2#, 3# probe in defectoscope 12 all reach warning gate.
Move down flaw detection probe II 5, make 4# probe be positioned at the position of original 2# probe, adjust successively 4#, 5# probe, make the artificial defect wave height occurring in 4#, 5# probe in defectoscope 12 all reach warning gate.
Close 6# probe.
● visited finished wheel wheel rim 6 height < sample wheel wheel rim 1 height:
For example: the size of height=4.5 probe of sample wheel wheel rim 1, the size of height=3.5 of finished wheel wheel rim 6 probe.
Flaw detection probe II 5 is motionless, has adjusted 2#, 3# probe, makes the artificial defect wave height occurring in 2#, 3# probe in defectoscope 12 all reach warning gate.
Close 4#~6# probe.
When above-mentioned calibration, must not it should be noted that and make the up-and-down boundary of controlled probe near sample wheel wheel rim 1, avoid causing that sidewall disturbs, make probe sensitivity in the time that sample wheel is calibrated with finished wheel flaw detection inconsistent.
When above-mentioned calibration, it shall yet further be noted that in the time that certain probe does not cover on sample wheel wheel rim 1 completely, this probe should be closed, avoid causing noise jamming.
3) adjust 7#, the 8# probe in flaw detection probe II 5: move up and down flaw detection probe II 5, taking D point in sample wheel wheel rim 1 as reference point, avoid the impact of tread I 2 structures, now under 8# probe, there is axial " index aperture 1 " near tread 5mm in sample wheel wheel rim 1, the waveform that occurs " index aperture 1 " in defectoscope 12, makes it reach warning gate height.Then adjust the artificial defect occurring in 7# probe in defectoscope 12, make its wave height reach warning gate.
4) different with the width of sample wheel wheel rim 1 owing to being visited finished wheel wheel rim 6, take turns wheel rim 1 width according to formula (⊿ dB=40lg[finished wheel wheel rim 6 width/sample]) carry out compensation for acoustic distance.For example: the width=140mm of wheel rim 6, the width=120mm of wheel rim 1, according to formula, the probe using should improve 3dB on defectoscope 12, makes the each position of finished wheel wheel rim 6 keep enough sensitivity.
5) measure in advance finished wheel wheel rim 6 and the material attenuation coefficient of sample wheel wheel rim 1 and the difference that surfaceness causes, according to the once end wave height of the once end wave height of formula (⊿ dB=20lg[finished wheel wheel rim 6/sample wheel wheel rim 1]) compensate.For example, the once end wave height of finished wheel wheel rim 6 is 50%, and the once end wave height of sample wheel wheel rim 1 is 100%, and according to formula, the probe using should improve 6dB on defectoscope 12, makes the each position of finished wheel wheel rim 6 keep enough sensitivity.
Flaw detection probe II 5 completes the calibration to sample wheel wheel rim 1.
2. calibration flaw detection probe I 4:
1) first adjust the 9# probe in flaw detection probe I 4.Move left and right flaw detection probe I 4, taking the H2 in sample wheel wheel rim 1 as reference point, avoid the impact of H2 chamfering structure, now under 9# probe, there is radially first artificial defect near the H2 5mm of place in sample wheel wheel rim 1, in defectoscope 12, there is the waveform of artificial defect, adjust and make it reach warning gate height.
2) adjust successively the 10#~16# probe in flaw detection probe I 4, make the artificial defect wave height occurring in 10# in defectoscope 12~16# probe all reach warning gate.Identical during with calibration flaw detection probe II 5, take turns the different of wheel rim 1 width according to finished wheel wheel rim 6 from sample, close unnecessary probe.
3) different with the height of sample wheel wheel rim 1 owing to being visited finished wheel wheel rim 6, take turns wheel rims 1 highly according to formula (⊿ dB=40lg[finished wheel wheel rim 6 height/samples]) carry out compensation for acoustic distance.For example: the height=90mm of wheel rim 6, the height=70mm of wheel rim 1, according to formula, the probe using should improve 4dB on defectoscope 12, makes the each position of finished wheel wheel rim 6 keep enough sensitivity.
4) defectoscope 12 improves 2~4dB, to compensate the difference causing because of material attenuation coefficient and surfaceness, makes the each position of finished wheel wheel rim 6 keep enough sensitivity.
5) owing to being visited finished wheel wheel rim 6 and sample wheel wheel rim 1 tread curvature different (because of both external diameter differences), should carry out suitable curvature compensation, offset is generally 1~3dB.For example finished wheel external diameter is 840mm, and sample wheel external diameter is 915mm, and in the time surveying finished wheel, defectoscope 12 should improve 1dB, makes the each position of finished wheel wheel rim 6 keep enough sensitivity.
Flaw detection probe I 4 completes the calibration to sample wheel wheel rim 1.
3. sample wheel leaves rotary carrier roller, and finished wheel 15 enters detection station.
4. adjust the position of flaw detection probe II 5:
1) move up and down flaw detection probe 5, taking the D1 in finished wheel wheel rim 6 as reference point, avoid the impact of D1 chamfering structure, ensure that probe and finished wheel wheel rim 6 are fully coupled.
2) flaw detection probe II 5 is motionless, taking D in finished wheel wheel rim 1 as reference point, avoids the impact of tread II 7 structures.
5. adjust the position of flaw detection probe I 4.
Move left and right flaw detection probe I 4, taking the H2 in finished wheel wheel rim 6 as reference point, avoid the impact of H2 chamfering structure, ensure that probe and finished wheel wheel rim 6 are fully coupled.
6. the probe in all flaw detection probe I 4 and II 5 improves 6dB in defectoscope 12, starts finished wheel wheel rim 6 to carry out carrying out flaw detection.
7. defectoscope 12 is not reported to the police, and represents that finished wheel 15 meets the requirements, and production line advances automatically, and next finished wheel 15 advances to detection position; Defectoscope 12 automatic alarms, represent that finished wheel 15 is undesirable, and production line does not readvance, and site operation personnel takes down finished wheel 15, and defectoscope 12 is reported to the police and automatically terminated, and production line advances automatically.
Wheel automatic ultrasonic flaw-detecting method of the present invention, detection position at production line arranges probe bracket, flaw detection probe I and flaw detection probe II are installed respectively on probe bracket, flaw detection probe I and flaw detection probe II are by defectoscope control, by above-mentioned structure and method, the wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread I and medial surface I is respectively carried out data acquisition, then the wheel rim inherent vice that flaw detection probe I and flaw detection probe II comprise tread II and medial surface II is respectively carried out data acquisition, spline wheel is taken turns to data with defectoscope and finished wheel data contrast, finished wheel data are within spline wheel wheel data area, finished wheel meets the requirements, within finished wheel data exceed wheel sample data area, finished wheel is undesirable, so, by wheel automatic flaw detection method of the present invention, can detect a flaw to the finished wheel wheel rim on production line quickly and easily, thereby reduce finished product rim for automobile wheel inherent vice rate of failing to report, ensure that the defect that finished wheel is existed can not occur undetected, the final wheel product quality that improves.
By reference to the accompanying drawings the present invention is carried out to exemplary description above; obviously the concrete realization of the present invention is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present invention and technical scheme to carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasions, all in protection scope of the present invention.