CN202804813U - Machine tool cutter in-situ testing system based on machine vision - Google Patents

Machine tool cutter in-situ testing system based on machine vision Download PDF

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Publication number
CN202804813U
CN202804813U CN 201220429538 CN201220429538U CN202804813U CN 202804813 U CN202804813 U CN 202804813U CN 201220429538 CN201220429538 CN 201220429538 CN 201220429538 U CN201220429538 U CN 201220429538U CN 202804813 U CN202804813 U CN 202804813U
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China
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stepper motor
camera
rotating
machine tool
machine vision
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CN 201220429538
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Chinese (zh)
Inventor
全燕鸣
党希超
谢德浩
卢满怀
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model discloses a machine tool cutter in-situ testing system based on machine vision. The testing system comprises a mechanical arm with multi-degree of freedom, an image acquisition device, and a computer. The mechanical arm is arranged on the machine tool. The mechanical arm comprises a lengthways moving mechanism, a rotating mechanism, a sidesway mechanism, and a turning mechanism. A lower end of the lengthways moving mechanism is connected with the sidesway mechanism through the rotating mechanism. The turning mechanism is arranged on the sidesway mechanism. The image acquisition device is arranged inside the turning mechanism. The lengthways moving mechanism, the rotating mechanism, the sidesway mechanism, the turning mechanism and the image acquisition device are connected with computer. The machine tool cutter in-situ testing system based on machine vision can test macroscopic shape and dimension and microscopic wear and damage automatically of the cutters which are arranged on a principle shaft oppositely in a limited space of the machine tool. Quality of the taken image is high, and checking result is accurate.

Description

Machine tool in-place detection system based on machine vision
Technical field
The utility model relates to the machine tool in-place detection system, is specifically related to a kind of machine tool in-place detection system based on machine vision.
Background technology
Cutter is the most widely used machining tool of the lathe in the present industrial production, and its parameter and quality directly determine quality and the qualification rate of processing.In order to ensure crudy, in design, processing and the use of cutter, must measure cutter, to guarantee the part crudy, enhance productivity, reduce production costs.
In metal cutting process, operating personnel are difficult to see clearly at the rounding machine cutter cutting tool state on the heavy duty machine tools particularly with naked eyes.The laboratory research that gall to decrease detects about cutter for a long time and emerge in an endless stream based on various tool life management model study of theory or experience, this illustrates that on the one hand people are fully recognized that the necessity of wanting head it off, and difficulty and the complexity of this problem also is described on the other hand.Because the complexity of cutter material, geometrical condition and working environment, what people attempted all is difficult to characterize reliably the cutter virtual condition based on indirect estimation methods such as cutting force or machine tool chief axis power in production environment.Therefore, the cutting tool state detection is a difficult problem of generally acknowledging in lathe and the machining field with regulator control system always.At present still rarely enterprise use the cutter Automatic Measurement Technique.
Image detection has direct and reliable characteristics.Band CCD(Charge-coupled Device, Chinese full name is: charge coupled cell) microscope of shooting has good certainty of measurement, but can only detect in small field of view at use for laboratory; Optical projection type tool setting gauge (tool presetter) also can only be used for cutter is carried out flat shape and dimensional measurement at measuring chamber, such as point of a knife angle, the arc radius of projection and the off-line Static Detection such as circular runout of coiling the class cutter, helpless to cutter 3D shape dimensional parameters, also without the microcosmic wear detection function.Except simple contact tool setting gauge, domestic also do not have practical in rounding machine cutter state-detection amount instrument.The more existing cutter on-line detector devices of industry advanced country, some has become commodity, but mainly be based on contact type measurement or laser measurement, laser type cutting tools measurement instrument such as Britain Reinshaw company, work in-process heart workbench is installed laser beam transmitter on one side during use, another side is installed the laser beam receiver, and main suitable detection cutter is disrumpent feelings, and Cutter wear and complex geometric shapes detection are not suitable for.Operating personnel also feel not bery reliable and convenient to the non-visual detection method directly perceived of this class and the use of device.
There is in recent years a small amount of scholar to attempt carrying out image detection at rounding machine cutter based on vision technique, but take General Principle and image processing method introduction as main, IMAQ all is to adopt use for laboratory to add long tube type amplification imaging equipment and general light source basically, manually adjusts and trigger camera picked-up single-frame images.But such checkout gear takes up room greatly, often needs removal workpiece or some machine tool components to pacify and can hold, and is difficult to be installed in actual production the detection in place of carrying out cutter in the limited space of lathe; Imaging viewing field is little in addition, can not take into account macroshape size and the surface microscopic state-detection of cutter; And can not automatically adjust camera focus and visual field and light source, so automation and intelligent degree are low, detection efficiency is low.
The utility model content
The deficiency that the utility model exists in order to overcome above prior art, provide a kind of little based on taking up room of machine vision, can stride the machine tool in-place detection system that the yardstick automatic precision detects.
The purpose of this utility model realizes by following technical scheme: the machine tool in-place detection system based on machine vision comprises multivariant mechanical arm, image acquiring device and computer; Described mechanical arm is installed on lathe, and mechanical arm comprises vertical shift mechanism, rotating mechanism, transverse-moving mechanism and switching mechanism; The end of vertical shift mechanism is connected with transverse-moving mechanism by rotating mechanism, and switching mechanism is installed on the transverse-moving mechanism, and image acquiring device is installed in the switching mechanism; The motor that vertical shift mechanism, rotating mechanism, transverse-moving mechanism, switching mechanism and image acquiring device are connected all passes through integrated drive plate and is connected with computer.
Described vertical shift mechanism comprises that tooth bar, the first gear, the first guiding polished rod, connector, vertical shift stepper motor, fixed mount and toothed belt transmission are secondary; Tooth bar passes the groove of connector, the first gear is installed in the groove of connector, and mesh with tooth bar, the first gear is connected with the vertical shift stepper motor by toothed belt transmission is secondary simultaneously, the vertical shift stepper motor is installed on connector by fixed mount, the first guiding polished rod passes the through hole of connector, and the vertical shift stepper motor is connected with Computer signal, and the end of the end of tooth bar and the first guiding polished rod all is fixed in an end of rotating mechanism.When being parked in certain height after cutter quits work, the control module of computer drives the vertical shift stepper motor, and then the vertical shift stepper motor rotates by moving the first gear of toothed belt transmission subband, cutter is made a video recording at suitable height thereby can regulate camera.
As a kind of preferred, the number of described the first guiding polished rod is 2, is installed on respectively the both sides of tooth bar.The length of tooth bar and the first guiding polished rod is determined according to the size of lathe and the inner space of lathe.
Described connector is installed on main shaft shell body or workbench or inwall or the back timber of lathe.
As a kind of preferred, described connector is installed on the main shaft shell body of lathe.
Described rotating mechanism comprises rotating frame, rotating stepper motor, the first shaft coupling, connecting axle, bearing and locking nut; Rotating stepper motor is installed on the interior top of groove of rotating frame, the output shaft of rotating stepper motor is connected with the upper end of the first shaft coupling, the first shaft coupling lower end is connected with connecting axle, connecting axle passes bearing, and the lower end of connecting axle is fixedly connected with the upper end of transverse-moving mechanism by locking nut, and rotating stepper motor is connected with Computer signal.The control module of computer drives electric rotating machine, thereby the image acquiring device that carries by connecting axle drive transverse-moving mechanism and transverse-moving mechanism carries out 360 ° rotation in horizontal plane, thereby can increase the scope of detection.
Described transverse-moving mechanism comprises that traversing framework, the first leading screw, the second guiding polished rod, second connect axial organ, feed screw nut plate, installing frame and traversing stepper motor; The first leading screw is installed on the centre of traversing framework, and the two ends of the first leading screw are installed on respectively the two ends of traversing framework, the second guiding polished rod is installed in the traversing framework, and be positioned at the both sides of the first leading screw, the lower end of feed screw nut plate is passed by the first leading screw and the second guiding polished rod simultaneously, the upper end is provided with U-lag, image acquiring device is installed in the U-lag of feed screw nut plate by switching mechanism, traversing stepper motor is installed on the tail end of traversing framework by installing frame, and the output shaft of traversing stepper motor is connected with the first screw mandrel by the second shaft coupling, and traversing stepper motor is connected with Computer signal.Control module by computer drives traversing stepper motor, thereby can adjust the camera lens of camera with respect to the distance of cutter.When distant between camera lens and the cutter, camera is taken the side image of cutter, thereby can detect the side view size of cutter; And when the close together between camera lens and the cutter, then camera will be taken cutter head local side image, thereby detect the microstate of cutter head side, such as the degree of wear of cutter.On this basis, relend and help the rotation of machine tool chief axis band cutter, then can detect the whole circumferential surface of cutter.
Described switching mechanism comprises rollover stand and upset stepper motor; Rollover stand and upset stepper motor are installed on respectively the medial and lateral of U-lag, and image acquiring device is installed in the rollover stand, and the output shaft of upset stepper motor inserts the square hole of rollover stand, and the stepper motor that overturns simultaneously is connected with Computer signal.The control module of computer drives the upset stepper motor, carries out 180 ° rotation thereby drive camera in vertical plane.When needs detected the knife end surface state, camera rotated 90 °, makes camera lens up, and vertical with horizontal plane.Simultaneously, the control module of computer drives traversing stepper motor, drives camera and moves at horizontal plane, makes camera lens face the end face of cutter, camera is taken the end face of cutter, thereby can be carried out the state-detection of cutter end face.
Described image acquiring device comprises camera and light source; Camera is fixedly installed in the rollover stand, and the camera lens front end of camera is provided with protective cover, and light source is installed on the place ahead of camera lens, and camera is connected with Computer signal.The protective cover that the camera lens front end is installed is the zero diopter protective cover, thereby prevents mist of oil and smear metal pollution camera lens (when particularly taking from the bottom up the cutter end face), affects the quality of image, thereby affects testing result.
As a kind of preferred, described camera adopts mega pixel level industrial digital camera, and has a 25mm tight shot, adapter ring is arranged to regulate visual field and object distance relation between camera and the camera lens, within the 125mm object distance, take micro-wearing and tearing visual field and be not less than 20*20mm, within the 300mm object distance, take long limit, macro-size visual field and be not less than 65mm.
Described machine tool in-place detection system based on machine vision also comprises two guiding slotted vanes, the second leading screw, feed screw nut frame and roll adjustment stepper motors; The slide bar of described light source both sides inserts the guiding slotted vane, and light source is installed on the second screw mandrel by the feed screw nut frame simultaneously, and the roll adjustment stepper motor is installed on the afterbody of miniature leading screw, and is connected with Computer signal simultaneously.The second screw mandrel is miniature screw mandrel, and the control module by computer drives the roll adjustment stepper motor and drives the second screw mandrel and rotate, thereby regulates between light source and the camera lens in distance.Therefore take under the bright intensity that camera can be suitable and obtain picture.
Described machine tool in-place detection system based on machine vision also comprises the second gear, fixed head and focusing stepper motor; Described the second gear is installed on the output shaft of focusing stepper motor, and simultaneously with the focusing gear ring engagement of camera, the focusing stepper motor is fixedly installed in camera by fixed head, the focusing stepper motor is connected with Computer signal.Can carry out automatic focusing thereby the control module of utilizing computer drives the focusing stepper motor, obtain high quality graphic.Can select the adapter ring of different size between camera main-body and the camera lens, with visual field and the object distance relation of regulating camera.
The lower end of the main shaft shell body of described lathe is provided with backlight arrangement, backlight arrangement comprises backlight, installing plate and connecting plate, and backlight is positioned at the place ahead of light source, backlight is articulated in the lower end of connecting plate, the upper end of connecting plate and installing plate lower end are hinged, the upper end of installing plate is fixedly mounted on the lower end of main shaft shell body, and detected cutter is between light source and backlight.Connecting plate plays a folding effect.When cutter being carried out the side shooting, if in the situation of have powerful connections interference or intensity of illumination deficiency, backlight (perhaps using separately motor-driven) can be set manually, thereby remove the interference of background and strengthen illumination.When backlight does not use, can upwards draw in, thereby can not affect the processing of cutter.
Operation principle of the present utility model is as follows: when detection system was not worked, camera was positioned at highest point; Before detection system is started working, computer at first carries out system initialization to detection system, even each stepper motor parameter in the detection system and the zero clearing of image processing parameter, then operating personnel input successively needs according to the cutter parameters of concrete detection target and requirement detection and take each location parameter of cutter image and the control instruction of image processing parameter in computer, click " bringing into operation " button on the user interface of computer, detection system enters automatic detected state again.When each stepper motor of computer drives makes camera reach predetermined camera site, automatically enter focusing, the focusing stepper motor drives camera lens and adjusts before and after automatically and simultaneously cutter is taken image series continuously, and the camera focusing software program in the computer is according to focusing function automatic discrimination picture rich in detail wherein.Focusing step motor control module in the computer according to the picture rich in detail signal that obtains after, again control signal is fed back to the focusing stepper motor by general serial or parallel interface, make a video recording thereby the control camera lens fixes on correspondence position.Afterwards the image of taking is sent to computer, the image analysis software in the computer is carried out Treatment Analysis to image, thereby detects the state of cutter, and the testing result of cutter is shown in computer screen; After detecting end, the computer control camera returns to original position, and namely camera is positioned at highest point, thereby makes detection system when not working, and does not affect the work of cutter.
The utility model has following advantage with respect to prior art:
1, machine tool in-place detection system based on machine vision of the present utility model is by vertical shift mechanism, rotating mechanism, connection between transverse-moving mechanism and the switching mechanism, motion by a plurality of mechanisms of computer control and parts makes camera determine in different positions according to different requirements, what make that camera can obtain cutter in limited lathe space strides the scalogram picture, so can automatically finish the flank of tool, the macroshape of bottom surface, the detection of size and cutter gall and decrease microcosmic detection, and the mechanism of detection system is compact, when detection system is not worked, can not affect the processing operation of lathe.
2, the machine tool in-place detection system based on machine vision of the present utility model not only camera lens can automatically regulate from the distance between the cutter and angle, and the distance between light source and the camera lens also can be regulated automatically, so it is high that camera obtains the quality of cutter image, thereby make the testing result of cutter more accurate.
3, the machine tool in-place detection system based on machine vision of the present utility model can directly detect cutting tool state in lathe, and does not need and will detect under the cutter dismounting again, so greatly reduced detection time and saved the again tool setting time; And each mechanism in the detection system and the motion of parts be all by computer control, thereby improved automation and the intelligent degree of detection system.
Description of drawings
Fig. 1 is the structural representation of the machine tool in-place detection system based on machine vision of the present utility model.
Fig. 2 is the structural representation of mechanical arm of the present utility model.
Fig. 3 is the structural representation of vertical shift of the present utility model mechanism.
Fig. 4 is the structural representation of rotating mechanism of the present utility model.
Fig. 5 is the structural representation of the utility model transverse-moving mechanism, switching mechanism and image acquiring device.
Fig. 6 is the structural representation of machine tool in-place detection system when detecting the state of flank of tool geomery based on machine vision of the present utility model.
Fig. 7 is the structural representation of machine tool in-place detection system when detecting the state of flank of tool microcosmic based on machine vision of the present utility model.
Fig. 8 is the structural representation of machine tool in-place detection system when detecting the knife end surface state based on machine vision of the present utility model.
Fig. 9 is the structural representation of the machine tool in-place detection system based on machine vision of the present utility model when being in off working state.
Figure 10 is the workflow diagram of the machine tool in-place detection system based on machine vision of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
To the machine tool in-place detection system based on machine vision shown in Figure 5, comprise multivariant mechanical arm, image acquiring device 7 and computer such as Fig. 1; Described mechanical arm is installed on lathe, and mechanical arm comprises vertical shift mechanism 4, rotating mechanism 5, transverse-moving mechanism 6 and switching mechanism 8; The end of vertical shift mechanism 4 is connected with transverse-moving mechanism 6 by rotating mechanism 5, and switching mechanism 8 is installed on the transverse-moving mechanism 6, and image acquiring device 7 is installed in the switching mechanism 8; Vertical shift mechanism 4, rotating mechanism 5, transverse-moving mechanism 6, tipper 8 structures are connected with image acquiring device and all are connected with computer.
Described vertical shift mechanism 4 comprises tooth bar 12, the first gear 13, the first guiding polished rod 11, connector 10, vertical shift stepper motor 15, fixed mount 9 and toothed belt transmission pair 14; Tooth bar 12 passes the groove of connector 10, the first gear 13 is installed in the groove of connector 10, and with tooth bar 12 engagements, simultaneously the first gear 13 is connected with vertical shift stepper motor 15 by toothed belt transmission secondary 14, vertical shift stepper motor 15 is installed on connector 10 by fixed mount 9, the first guiding polished rod 11 passes the through hole of connector 10, and vertical shift stepper motor 15 is connected with Computer signal, and the end of the end of tooth bar 12 and the first guiding polished rod 11 all is fixed in an end of rotating mechanism 5.As a kind of preferred, the upper end of the rotating frame 22 in the rotating mechanism 5 all is fixed in the lower end of tooth bar 12 and the first guiding polished rod 11.The number of described the first guiding polished rod 11 is 2, is installed on respectively the both sides of tooth bar 12.The length of tooth bar 12 and the first guiding polished rod 11 is determined according to the size of lathe and the inner space of lathe.
As a kind of preferred, described connector 10 is installed on the main shaft shell body 3 of lathe.
Described rotating mechanism 5 comprises rotating frame 22, rotating stepper motor 16, the first shaft coupling 17, connecting axle 18, bearing 19 and locking nut 21; Rotating stepper motor 16 is installed on the interior top of groove of rotating frame 22, the output shaft of rotating stepper motor 16 is connected with the upper end of the first shaft coupling 17, the first shaft coupling lower end 17 is connected with connecting axle 18, connecting axle 18 passes bearing 19, and the lower end of connecting axle 18 is fixedly connected with by the upper end of the traversing framework in locking nut 21 and the transverse-moving mechanism 6, and rotating stepper motor 16 is connected with Computer signal.
Described transverse-moving mechanism 6 comprises that traversing framework 20, the first leading screw 24, the second guiding polished rod 23, second connect axial organ 27, feed screw nut plate 30, installing frame 25 and traversing stepper motor 26; The first leading screw 24 is installed on the centre of traversing framework 20, and the two ends of the first leading screw 24 are installed on respectively the two ends of traversing framework 20, the second guiding polished rod 23 is installed in the traversing framework 20, and be positioned at the both sides of the first leading screw 24, the lower end of feed screw nut plate 30 is passed by the first leading screw 24 and the second guiding polished rod 23 simultaneously, the upper end is provided with U-lag, image acquiring device 7 is installed in the U-lag of feed screw nut plate 30 by switching mechanism 8, traversing stepper motor 26 is installed on the tail end of traversing framework 20 by installing frame 25, and the output shaft of traversing stepper motor 26 is connected with the first screw mandrel 24 by the second shaft coupling 27, and traversing stepper motor 26 is connected with Computer signal.The two ends of described the first screw mandrel 24 are installed on respectively header board 31 and the rear plate 28 of traversing framework 20 by bearing, and an end of the first screw mandrel 24 is connected with traversing stepper motor 26 by the second shaft joint 27.And 2 second both sides that guide polished rod 23 to lay respectively at the first screw mandrel 24, and the two ends of the second guiding polished rod 23 are individually fixed in header board 31 and rear plate 28.
Described switching mechanism 8 comprises rollover stand 40 and upset stepper motor 29; Rollover stand 40 and upset stepper motor 28 are installed on respectively the medial and lateral of U-lag, and image acquiring device 7 is installed in the rollover stand 40, and the output shaft of upset stepper motor 29 inserts the square hole of rollover stand 40, and the stepper motor 29 that overturns simultaneously is connected with Computer signal.
Described image acquiring device comprises camera 42 and light source 34; Camera 42 is fixedly installed in the rollover stand 40, and the camera lens front end of camera 42 is provided with protective cover 36, and light source 34 is installed on the place ahead of camera lens, and camera 42 is connected with Computer signal.
As a kind of preferred, described camera adopts mega pixel level industrial digital camera, and the 25mm tight shot is housed, and between camera and the camera lens adapter ring is arranged, within the 125mm object distance, take micro-wearing and tearing visual field and be not less than 20*20mm, within the 300mm object distance, take long limit, macro-size visual field and be not less than 65mm.
Described machine tool in-place detection system based on machine vision also comprises two guiding slotted vanes 35, the second leading screw 32, feed screw nut frame 33 and roll adjustment stepper motors; The slide bar of described light source 34 both sides inserts guiding slotted vane 35, and light source 34 is installed on the second screw mandrel 32 by feed screw nut frame 33 simultaneously, and the roll adjustment stepper motor is installed on the afterbody of the second leading screw, and is connected with Computer signal simultaneously.
Described machine tool in-place detection system based on machine vision also comprises the second gear 38, fixed head 41 and focusing stepper motor 39; Described the second gear 38 is installed on the output shaft of focusing stepper motor 39, and simultaneously with focusing gear ring 37 engagements of camera 42, focusing stepper motor 39 is fixedly installed in camera 42 by fixed head 41, focusing stepper motor 39 is connected with Computer signal.
The lower end of the main shaft shell body of described lathe is provided with backlight arrangement 2, backlight arrangement comprises backlight 201, connecting plate 202 and installing plate 203, and backlight 201 is positioned at the place ahead of light source 34, backlight 201 is articulated in the lower end of connecting plate 202, the upper end of connecting plate 202 and installing plate 203 lower ends are hinged, the upper end of installing plate 203 is fixedly mounted on the lower end of main shaft shell body, and detected cutter is between light source and backlight.
According to Figure 10, this is based on each detected state of the machine tool in-place detection system of machine vision:
Such as Fig. 6, when needs detect cutter 1 side view size, at first utilize to calculate detection system is initialized, then in computer, input the control instruction to each stepper motor.Namely at first drive vertical shift stepper motor 15 and adjust the height that camera 42 arrives setting, driving rotating stepper motor 16 makes camera 42 rotate certain angle again, make the camera lens of camera 42 over against cutter 1, then drive traversing stepper motor 26 drive cameras 42 and move horizontally, make the size of distance for setting between camera lens and the cutter 1.Utilize focusing stepper motor 39 to regulate the focal length of cameras 42, adjust to suitable focal length after, start 42 pairs of cutters 1 of camera and take, and the image that shooting obtains is sent to computer by serial port.Image processing software in the computer carries out Treatment Analysis to image, thereby detects the side view size of cutter 1.Carrying out side when shooting, machine tool chief axis can be with cutter 1 rotation, thereby camera 42 can be taken the whole circumference side of cutter 1.The image of taking sends computer to and carries out Treatment Analysis, and the data of Treatment Analysis are preserved, and shows the result by computer screen simultaneously.In the process of side shooting, backlight 2 determines whether leave behind according to the needs of illumination and the situation of background.
Such as Fig. 7, when needing to detect the microstate of cutter 1 side, at first utilize to calculate detection system is initialized, then in computer, input the control instruction to each stepper motor.Utilize computer control vertical shift stepper motor 15 and rotating stepper motor 16, make camera 42 move to suitable height and in horizontal plane, turn to the correct position that the camera lens that makes camera 42 faces cutter 1 termination.Drive traversing stepper motor 26, the camera lens that makes camera 42 near cutter 1 termination the side, then after camera 42 is adjusted focal length, shooting at close range is carried out in the side of cutter 1 termination and obtain image, again image is sent to computer and carry out Treatment Analysis, and will draw data to the microstate analysis of cutter termination and preserve, show the result by computer screen simultaneously.In the process of side microimaging, machine tool chief axis can be with cutter 1 rotation, thereby camera 42 can photograph whole circumference side, cutter termination, and this moment, backlight 2 generally was in rounding state;
Such as Fig. 8, when needs detect the end face of cutter 1, at first utilize to calculate detection system is initialized, then in computer, input the control instruction to each stepper motor.Utilize computer control vertical shift stepper motor 15 and rotating stepper motor 16, make camera 42 be positioned at the height of setting and rotate certain angle; Drive again upset stepper motor 29, camera 42 is overturn 90 ° in vertical plane, make the camera lens of camera 42 up; Then drive traversing stepper motor 26, make the camera lens of camera 42 face the end face of cutter 1; After again the focal length of camera 42 being adjusted to suitable position, the end face of 42 pairs of cutters 1 of camera is taken and is obtained image, and image is sent to computer, and computer utilizes Treatment Analysis software that the image of end face is carried out Treatment Analysis, and the data that this analysis draws are preserved, logical computer screen shows the result simultaneously.When the end face of cutter 1 detects, because do not need to use backlight 2, so backlight is in rounding state.
As shown in Figure 9, when detection system was in off working state, the traversing framework 20 in the transverse-moving mechanism 6 was parallel with the main shaft shell body 3 of lathe, and simultaneously vertical shift mechanism 4 rises to the extreme higher position with camera 42, thereby avoided detection system to affect the work operation of cutter.
Embodiment 2
This based on the machine tool in-place detection system of machine vision except following characteristics with embodiment 1: as a kind of preferably, described connector 10 is installed on the inwall of lathe.
The above-mentioned specific embodiment is preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and make or other equivalent substitute mode are included within the protection domain of the present utility model.

Claims (10)

1. based on the machine tool in-place detection system of machine vision, it is characterized in that: comprise multivariant mechanical arm, image acquiring device and computer; Described mechanical arm is installed on lathe, and mechanical arm comprises vertical shift mechanism, rotating mechanism, transverse-moving mechanism and switching mechanism; The end of vertical shift mechanism is connected with transverse-moving mechanism by rotating mechanism, and switching mechanism is installed on the transverse-moving mechanism, and image acquiring device is installed in the switching mechanism; Vertical shift mechanism, rotating mechanism, transverse-moving mechanism, switching mechanism and image acquiring device are connected and are connected with computer.
2. the machine tool in-place detection system based on machine vision according to claim 1 is characterized in that: described vertical shift mechanism comprises that tooth bar, the first gear, the first guiding polished rod, connector, vertical shift stepper motor, fixed mount and toothed belt transmission are secondary; Tooth bar passes the groove of connector, the first gear is installed in the groove of connector, and mesh with tooth bar, the first gear is connected with the vertical shift stepper motor by toothed belt transmission is secondary simultaneously, the vertical shift stepper motor is installed on connector by fixed mount, the first guiding polished rod passes the through hole of connector, and the vertical shift stepper motor is connected with Computer signal, and the end of the end of tooth bar and the first guiding polished rod all is fixed in an end of rotating mechanism.
3. the machine tool in-place detection system based on machine vision according to claim 2, it is characterized in that: described connector is installed on main shaft shell body or workbench or inwall or the back timber of lathe.
4. the machine tool in-place detection system based on machine vision according to claim 1, it is characterized in that: described rotating mechanism comprises rotating frame, rotating stepper motor, the first shaft coupling, connecting axle, bearing and locking nut; Rotating stepper motor is installed on the interior top of groove of rotating frame, the output shaft of rotating stepper motor is connected with the upper end of the first shaft coupling, the first shaft coupling lower end is connected with connecting axle, connecting axle passes bearing, and the lower end of connecting axle is fixedly connected with the upper end of transverse-moving mechanism by locking nut, and rotating stepper motor is connected with Computer signal.
5. the machine tool in-place detection system based on machine vision according to claim 1 is characterized in that: described transverse-moving mechanism comprises that traversing framework, the first leading screw, the second guiding polished rod, second connect axial organ, feed screw nut plate, installing frame and traversing stepper motor; The first leading screw is installed on the centre of traversing framework, and the two ends of the first leading screw are installed on respectively the two ends of traversing framework, the second guiding polished rod is installed in the traversing framework, and be positioned at the both sides of the first leading screw, the lower end of feed screw nut plate is passed by the first leading screw and the second guiding polished rod simultaneously, the upper end is provided with U-lag, image acquiring device is installed in the U-lag of feed screw nut plate by switching mechanism, traversing stepper motor is installed on the tail end of traversing framework by installing frame, and the output shaft of traversing stepper motor is connected with the first screw mandrel by the second shaft coupling, and traversing stepper motor is connected with Computer signal.
6. the machine tool in-place detection system based on machine vision according to claim 5 is characterized in that: described switching mechanism comprises rollover stand and upset stepper motor; Rollover stand and upset stepper motor are installed on respectively the medial and lateral of U-lag, and image acquiring device is installed in the rollover stand, and the output shaft of upset stepper motor inserts the square hole of rollover stand, and the stepper motor that overturns simultaneously is connected with Computer signal.
7. the machine tool in-place detection system based on machine vision according to claim 6, it is characterized in that: described image acquiring device comprises camera and light source; Camera is fixedly installed in the rollover stand, and the camera lens front end of camera is provided with protective cover, and light source is installed on the place ahead of camera lens, and camera is connected with Computer signal.
8. the machine tool in-place detection system based on machine vision according to claim 7 is characterized in that: also comprise two guiding slotted vanes, the second leading screw, feed screw nut frame and roll adjustment stepper motors; The slide bar of described light source both sides inserts the guiding slotted vane, and light source is installed on the second screw mandrel by the feed screw nut frame simultaneously, and the roll adjustment stepper motor is installed on the afterbody of miniature leading screw, and is connected with Computer signal simultaneously.
9. the machine tool in-place detection system based on machine vision according to claim 7 is characterized in that: also comprise the second gear, fixed head and focusing stepper motor; Described the second gear is installed on the output shaft of focusing stepper motor, and simultaneously with the focusing gear ring engagement of camera, the focusing stepper motor is fixedly installed in camera by fixed head, the focusing stepper motor is connected with Computer signal.
10. each described machine tool in-place detection system based on machine vision in 9 according to claim 7, it is characterized in that: the lower end of the main shaft shell body of described lathe is provided with backlight arrangement, backlight arrangement comprises backlight, installing plate and connecting plate, and backlight is positioned at the place ahead of light source, backlight is articulated in the lower end of connecting plate, the upper end of connecting plate and installing plate lower end are hinged, the upper end of installing plate is fixedly mounted on the lower end of main shaft shell body, and detected cutter is between light source and backlight.
CN 201220429538 2012-08-27 2012-08-27 Machine tool cutter in-situ testing system based on machine vision Withdrawn - After Issue CN202804813U (en)

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CN 201220429538 CN202804813U (en) 2012-08-27 2012-08-27 Machine tool cutter in-situ testing system based on machine vision

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102825505A (en) * 2012-08-27 2012-12-19 华南理工大学 Online detecting system of machine tool cutters based on machine vision
CN107717509A (en) * 2017-11-10 2018-02-23 西京学院 A kind of milling fixture for vision-based detection
CN109187249A (en) * 2018-09-10 2019-01-11 厦门理工学院 A kind of rotating tool in machine visible detection method and its detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102825505A (en) * 2012-08-27 2012-12-19 华南理工大学 Online detecting system of machine tool cutters based on machine vision
CN107717509A (en) * 2017-11-10 2018-02-23 西京学院 A kind of milling fixture for vision-based detection
CN109187249A (en) * 2018-09-10 2019-01-11 厦门理工学院 A kind of rotating tool in machine visible detection method and its detection device

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