Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of supercharger impeller curved surface end face cosmetic injury checkout equipment and detection method, the cosmetic injury that artificial visual detects impeller blade is substituted by machinery and equipment, there is precision higher and be not easy undetected survey, the high advantage being applicable to industrial site of recall precision.
Technical scheme of the present invention is achieved in that
A kind of supercharger impeller curved surface end face cosmetic injury checkout equipment, comprise rotary drive mechanism, rotary encoder and at least one industrial camera, described rotary drive mechanism locates impeller to be detected, and can, with the axis of impeller to be detected for axle, drive it to rotate with certain speed; The rotating shaft of described rotary encoder and the synchronized rotation of impeller to be detected, and the signal output part of described rotary encoder is electrically connected with described industrial camera, and send pulse signal to this industrial camera; Described industrial camera is suspended at around impeller to be detected, makes the camera lens of this industrial camera just to the end face of the blade of impeller to be detected, and carries out collection according to the described pulse signal received to the blade of impeller to be detected and take pictures.
Further, described rotary drive mechanism comprises impeller fixture, turning axle, rotating basis and rotating power source, described turning axle is arranged in the center of described rotating basis, and impeller to be detected is fixed on described turning axle by described impeller fixture, and is positioned at described rotating basis side; Described rotary encoder is fixedly arranged on described rotating basis opposite side, and its rotating shaft is fixedly connected with described turning axle; Described rotating power source drives described rotating basis to rotate by a gear train.
Further, the structure that described industrial camera is suspended at around impeller to be detected is: be provided with worktable, corresponding each industrial camera, described worktable is fixed with column, being positioned on described column of the Height Adjustable and tilt adjustable joint of described industrial camera.
Further, described industrial camera is fixedly connected with a camera holder, and described camera holder is connected with one first locking member rotational positioning, and described first locking member locks on described column.
Further, corresponding each industrial camera, is provided with a light source, and institute's light source is fixedly connected with a light source base, and described light source base is connected with one second locking member rotational positioning, and described second locking member locks on described column.
A kind of supercharger impeller curved surface end face cosmetic injury detection method, with the axis of impeller to be detected for axle, drives impeller to be detected to rotate with certain speed by a rotary drive mechanism; Be provided with at least one industrial camera around impeller to be detected, the impeller to be detected of rotation sends pulse signal by a rotary encoder to described industrial camera, takes pictures to drive the end face of described industrial camera to the appointment blade of impeller; The circumference picture that described industrial camera gathers whole impeller by taking pictures also carries out analysis contrast, to judge whether the curved surface end face outward appearance of impeller blade has damage: its step analyzing contrast is as follows:
A. after industrial camera photographed the circumference picture of whole impeller, by finding out the outline end face different from the standard impeller curved surface preset in industrial camera to the high order mathematical equation model of curved edge and similarity algorithm for estimating;
B. the method adopting curve irrelevance to measure judges the flexural deformation on this outline end face;
C. adopt plaque assay procedure to lack the wound of outer contour surface to judge.
Further, be provided with multiple described industrial camera, multiple described industrial camera carries out collection to the segmental arc of impeller blade different curvature and takes pictures.
Further, be provided with three described industrial cameras, and three described industrial cameras are arranged in the surrounding of impeller to be detected, and consistent with each interlobate a certain angle of impeller.
Further, be provided with a described industrial camera, this industrial camera first carries out collection to end face segmental arc of the blade of impeller to be detected and takes pictures, and then after the adjustment end face of blade of impeller to be detected and the relative angle of industrial camera, then carries out collection to other segmental arcs and takes pictures.
The invention has the beneficial effects as follows: the invention provides a kind of supercharger impeller curved surface end face cosmetic injury checkout equipment and detection method, this detection scheme can detect the impeller end planar defect (impeller flexural deformation or impeller collide with) in 0.5MM.Compared with detecting with artificial visual, this detection method precision is higher and be not easy undetected survey.Because of camera take pictures and vane rotary quickly, whole test can complete within 5-10 second.Therefore, this method of testing efficiency is higher, and appropriateness is fast, is applicable to being applied to industrial site.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples, its object is only better understand content of the present invention but not limit the scope of the invention.
As shown in Figure 1, a kind of supercharger impeller curved surface end face cosmetic injury checkout equipment, comprise rotary drive mechanism 1, rotary encoder 2 and at least one industrial camera 3, described rotary drive mechanism locates impeller 4 to be detected, and can, with the axis of impeller to be detected for axle, drive it to rotate with certain speed; The rotating shaft of described rotary encoder and the synchronized rotation of impeller to be detected, and the signal output part of described rotary encoder is electrically connected with described industrial camera, and send pulse signal to this industrial camera; Described industrial camera is suspended at around impeller to be detected, makes the camera lens of this industrial camera just to the end face of the blade of impeller to be detected, and carries out collection according to the described pulse signal received to the blade of impeller to be detected and take pictures.Like this, impeller to be detected is driven to rotate with certain speed by rotary drive mechanism, and the angular displacement signal of impeller to be detected is gathered by rotary encoder, produce output pulse signal to industrial camera, industrial camera can carry out collection to the circumference picture of impeller blade and takes pictures and carry out analysis contrast, thus judges whether the curved surface end face outward appearance of impeller blade has damage.The analysis control methods of industrial camera is: first, after industrial camera photographed the circumference picture of whole impeller, by finding out the outline end face different from the standard impeller curved surface preset in industrial camera to the high order mathematical equation model of curved edge and similarity algorithm for estimating; Then, the method adopting curve irrelevance to measure judges the flexural deformation on this outline end face; Finally, adopt plaque assay procedure to lack the wound of outer contour surface to judge.Like this, impeller end planar defect in 0.5MM (bending blade distortion or blade collide with and produce pit) can be detected, compared with detecting with artificial visual, this checkout equipment of this application and method detection impeller precision higher and be not easy undetected survey.Due to camera take pictures and vane rotary quickly, whole test can complete within 5-10 second.Therefore, this checkout equipment of this employing and detection method efficiency higher, appropriateness is fast, is applicable to being applied to industrial site.
Preferably, described rotary drive mechanism comprises impeller fixture 101, turning axle 102, rotating basis 103 and rotating power source 104, described turning axle is arranged in the center of described rotating basis, impeller to be detected is fixed on described turning axle by described impeller fixture, and is positioned at described rotating basis side; Described rotary encoder is fixedly arranged on described rotating basis opposite side, and its rotating shaft is fixedly connected with described turning axle; Described rotating power source drives described rotating basis to rotate by a gear train 105.Like this, can impeller be fixed on turning axle by impeller fixture, during specific implementation, can by arranging stop part and locking member realization at impeller shaft hole two ends, when the axis hole of impeller is penetrated on turning axle, impeller one end backstop is in stop part, and the other end passes through locking member locking positioning, to realize the function be fixed to by impeller on turning axle.And coordinating by rotating basis and turning axle, the function that rotary encoder and impeller can be integrated, then drives dial rotation by rotating power source drive transmission device, can realize the function that can drive vane rotary to be detected.During concrete enforcement, rotating power source is motor, especially for have speed-regulating range width, low speed moment large, operate steadily, DC brushless motor that low noise, efficiency are high, to drive rotation 360 degree revolution: the implementation of gear train has multiple, can according to the pivot center needs of motor and rotating basis, adopt gear drive or/and the gear trains such as V belt translation realize, it is driven to rotate as long as the rotary power that rotating power source exports can be transferred to rotating basis, gear train is common mechanism in prior art, does not repeat them here.Above-mentioned rotary drive mechanism is a kind of preferred implementation, but be not limited thereto, also other modes can be adopted to realize, as by with can 360 degree of pivotal jaws mechanical arm realize, live impeller by jaw gripping and carry out 360 degree of revolutions, the arm of mechanical arm can realize various dimensions and move, and so just can meet industrial camera collection and to take pictures the needs of circumference of impeller picture.
Preferably, see Fig. 2, the structure that described industrial camera is suspended at around impeller to be detected is: be provided with worktable 5, corresponding each industrial camera, described worktable is fixed with column 6, being positioned on described column of described industrial camera Height Adjustable and tilt adjustable joint.Like this, be built on worktable by column, impeller relatively to be detected for industrial camera can be raised to assigned address, to make the camera lens of industrial camera just to the end face of the assigned address of impeller blade.
Preferably, described industrial camera is fixedly connected with a camera holder 7, and described camera holder is connected with one first locking member rotational positioning, and described first locking member 8 locks on described column.Like this, by up-down adjustment first locking member, the Height Adjustable function regulating industrial camera can be realized, rotated relative to the front and back of the first locking member (specifically can be and be located by connecting by axis of rotation) by camera holder, the function of tilt adjustable joint can be realized.
Preferably, corresponding each industrial camera, is provided with a light source 9, and institute's light source is fixedly connected with a light source base 10, and described light source base is connected with one second locking member rotational positioning, and described second locking member 11 locks on described column.Like this, by up-down adjustment second locking member, the Height Adjustable function regulating light source can be realized, rotated relative to the front and back of the second locking member (specifically can be and be located by connecting by axis of rotation) by light source base, the function of light source incline angle adjustable can be realized.
A kind of supercharger impeller curved surface end face cosmetic injury detection method, with the axis of impeller to be detected for axle, drives impeller to be detected to rotate with certain speed by a rotary drive mechanism; Be provided with at least one industrial camera around impeller to be detected, the impeller to be detected of rotation sends pulse signal by a rotary encoder to described industrial camera, takes pictures to drive the end face of described industrial camera to the appointment blade of impeller; The circumference picture that described industrial camera gathers whole impeller by taking pictures also carries out analysis contrast, to judge whether the curved surface end face outward appearance of impeller blade has damage: its step analyzing contrast is as follows:
A. after industrial camera photographed the circumference picture of whole impeller, by finding out the outline end face different from the standard impeller curved surface preset in industrial camera to the high order mathematical equation model of curved edge and similarity algorithm for estimating;
B. the method adopting curve irrelevance to measure judges the flexural deformation on this outline end face;
C. adopt plaque assay procedure to lack the wound of outer contour surface to judge.
In said method, curve irrelevance measuring method refers to: the outline end face establishing this standard impeller blade in industrial camera in advance, corresponding outline end face sets center line, outline end face and this center line of the impeller blade to be detected collected by industrial camera contrast, judge whether this outline end face deviate from center line, if deviate from this center line, judge that this blade there occurs flexural deformation.See the non-disalignment of blade in Fig. 3, A prescription frame, do not occur bending and deformation, B prescription frame Leaf deviate from center line, and blade flexural deformation is described.
Plaque assay procedure refers to: the outline end face establishing standard impeller blade in industrial camera in advance, the outline end face of the impeller blade to be detected collected by industrial camera and the outline end face of standard impeller blade contrast, if there is breach, then judge that this outline end face exists wound and lacks.See Fig. 3 and Fig. 4, wherein, C place blade has bump injury.
Preferably, be provided with multiple described industrial camera, multiple described industrial camera carries out collection to the segmental arc of impeller blade different curvature and takes pictures.The vane end faces of impeller devises the segmental arc of multiple curvature usually as required, is focused on, can obtain and take pictures clearly, gather the image of this segmental arc by an industrial camera to a segmental arc.The end face of a usual blade comprises the segmental arc of at least two curvature.
Preferably, be provided with three described industrial cameras, and three described industrial cameras are arranged in the surrounding of impeller to be detected, and consistent with each interlobate a certain angle of impeller.Blade on impeller normally circumference in equal parts is uniform, on a such as impeller, decile is evenly equipped with six blades, then three industrial cameras can consistent with a certain angle between six blades time, corresponding two the adjacent blades of such as two cameras, another camera and this two one or two blades of camera interval are arranged.Because the complicacy of the structure of often kind of impeller blade is different, can adjust the quantity of camera and installation site by concrete situation in production application.
Preferably, be provided with a described industrial camera, this industrial camera first carries out collection to end face segmental arc of the blade of impeller to be detected and takes pictures, and then after the adjustment end face of blade of impeller to be detected and the relative angle of industrial camera, then carries out collection to other segmental arcs and takes pictures.Blade due to impeller has the segmental arc of multiple curvature usually, therefore, when a design industrial camera, and can by the relative angle between adjustment impeller blade and industrial camera to meet the needs of taking pictures to the segmental arc collection of different curvature.
To sum up, the invention provides a kind of supercharger impeller curved surface end face cosmetic injury checkout equipment and detection method, this detection scheme can detect the impeller end planar defect (impeller flexural deformation or impeller collide with) in 0.5MM.Compared with detecting with artificial visual, this detection method precision is higher and be not easy undetected survey.Because of camera take pictures and vane rotary quickly, whole test can complete within 5-10 second.Therefore, this method of testing efficiency is higher, and appropriateness is fast, is applicable to being applied to industrial site.
Above embodiment is with reference to accompanying drawing, to a preferred embodiment of the present invention will be described in detail.Those skilled in the art by carrying out amendment on various forms or change to above-described embodiment, but when not deviating from essence of the present invention, drops within protection scope of the present invention.