Non-contact tool dynamic run-out measuring instrument

Abstract

The utility model discloses a non-contact tool dynamic run-out measuring instrument, which is used for detecting a run-out value of a tool and comprises a rotary driving device, an optical measuring device, a controller, a processor and a display screen. The rotation driving device comprises a fixing assembly used for containing a cutter and a rotation driving assembly, and the rotation driving assembly is fixedly connected with the fixing assembly and used for driving the cutter on the fixing assembly to rotate. The optical measuring device comprises a camera, and the camera is used for shooting an image of the cutter in the rotating process. The controller is electrically connected with the rotation driving assembly and controls the rotation driving assembly to drive the cutter to rotate. The processor is electrically connected with the controller and is used for sending a control instruction to the controller; the processor is electrically connected with the camera and used for processing the image and obtaining the jumping value of the cutter. The display screen is electrically connected with the processor and used for displaying the jumping value of the cutter. The device can detect the dynamic runout of the cutter, and is simple in operation and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of tool detection, in particular to a non-contact dynamic runout measuring instrument for tools. Background Technique

[0002] In machining, the radial runout of rotary tools has a great influence on the service life of the tools and the machining accuracy of workpieces. Especially in high-speed machining, in order to extend the service life of the tools and meet the machining accuracy requirements, it is necessary to detect the runout data of the tools.

[0003] CNC precision machining has high requirements for the runout of tool installation. Usually, the way to detect the tool runout is to install the tool on the tool holder and then install the tool holder on the CNC machining equipment, and use a dial indicator to measure the runout of the tool. The measurement operation is relatively cumbersome, the efficiency is low, and it will occupy the machining equipment, reducing the use efficiency of the equipment. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a non-contact dynamic runout measuring instrument for tools, which can realize the detection of the dynamic runout of the tools, and has simple operation and high efficiency.

[0005] The utility model is realized through the following technical solutions:

[0006] A non-contact dynamic runout measuring instrument for tools, used to detect the runout value of the tool, includes:

[0007] A rotation driving device, which includes a fixed component for placing the tool and a rotation driving component. The rotation driving component is fixedly connected to the fixed component to drive the tool on the fixed component to rotate;

[0008] An optical measuring device, which includes a camera for taking images of the tool during rotation;

[0009] A controller, which is electrically connected to the rotation driving component and controls the rotation driving component to drive the tool to rotate;

[0010] A processor, which is electrically connected to the controller and is used to send control instructions to the controller; the processor is electrically connected to the camera for processing the images and obtaining the runout value of the tool;

[0011] A display screen, which is electrically connected to the processor for displaying the runout value of the tool.

[0012] Furthermore, the non-contact dynamic runout measuring instrument for tools further includes an image acquisition card 44, and the image acquisition card 44 is simultaneously electrically connected to the camera 21 and the processor 41.

[0013] Further, the processor 41 includes a preprocessing module 451, a measurement processing module 452, and a judgment and output module 453. The preprocessing module 451 is electrically connected to the image acquisition card 44, the preprocessing module 451 is electrically connected to the measurement processing module 452, the measurement processing module 452 is electrically connected to the judgment and output module 453, and the judgment and output module 453 is electrically connected to the display screen 47.

[0014] Further, the rotation driving assembly includes a first motor. The fixing assembly includes a tool holder and a rotating shaft. The rotating shaft is rotatably arranged in the tool holder through a bearing. The tool is fixedly connected to the rotating shaft. The first motor is used to drive the rotating shaft to rotate.

[0015] Further, the tool includes a pull stud. A pull claw is arranged inside the rotating shaft. When the pull claw is in the locked state, the pull claw is clamped with the pull stud; when the pull claw is in the open state, the pull claw is disengaged from the pull stud.

[0016] Further, the fixing assembly further includes a cylinder and a pull rod. The pull rod is arranged in the through hole of the rotating shaft, and one end of the pull rod is fixedly connected to the pull claw. The cylinder is arranged at the other end of the pull rod and is used to drive the pull rod to move along the axial direction of the pull rod; the controller is electrically connected to the cylinder and controls the cylinder to drive the pull rod to move.

[0017] Further, an annular groove and a first boss are arranged on the inner wall of the rotating shaft. The inner diameter of the annular groove is larger than the inner diameter of the through hole. An elastic member is sleeved around the pull rod. One end of the elastic member abuts against the first boss and the other end abuts against a second boss on the pull rod;

[0018] When the pull claw is in the locked state, the pull rod maintains the pull claw in the through hole under the elastic force of the elastic member, and the side wall of the through hole limits the pull claw so that the pull claw is clamped with the pull stud;

[0019] When the cylinder drives the pull rod to move against the elastic force of the elastic member, the pull rod drives the pull claw to be located in the annular groove. At this time, the pull claw is disengaged from the limiting effect of the side wall of the through hole and changes from the locked state to the open state.

[0020] Further, the rotation driving assembly further includes a driving wheel, a belt, and a driven wheel. The driving wheel is fixedly connected to the output shaft of the first motor. The driven wheel is sleeved on the rotating shaft. The belt is connected between the driving wheel and the driven wheel. The first motor is adjacent to the cylinder.

[0021] Further, the non-contact tool dynamic runout measuring instrument further includes a linear driving device. The linear driving device includes an X-direction driving assembly and a Z-direction driving assembly. The X-direction driving assembly is fixedly connected to the Z-direction driving assembly and drives the Z-direction driving assembly to move along the X-axis direction. The Z-direction driving assembly is fixedly connected to the optical measuring device and drives the optical measuring device to move along the Z-axis direction.

[0022] Further, the optical measurement device further includes a light source, and the Z-direction driving assembly further includes a first bracket for fixing the camera and the light source, and the camera and the light source are respectively arranged on both sides of the tool.

[0023] Compared with the prior art, the advantages of the present utility model are as follows:

[0024] 1. By using the rotation driving assembly to drive the tool to rotate and using the optical measurement device to record the image of the tool during rotation, the dynamic runout data of the tool can be obtained, and the accuracy is higher.

[0025] 2. By using the camera to capture the tool image and using the preprocessing module, measurement processing module and judgment output module to analyze the data of the tool image to obtain the tool runout value, and the whole measurement does not require manual participation, which is convenient and simple, and greatly improves the measurement efficiency.

[0026] 3. By setting the X-direction driving assembly to drive the Z-direction driving assembly and the optical measurement device to move in the X direction, the shooting range of the camera is expanded, and at the same time, the measurement of the runout value of tools with different diameters is satisfied, and the adaptability is stronger. Description of the Drawings

[0027] Figure 1 is a three-dimensional assembly drawing of a non-contact tool dynamic runout measuring instrument according to an embodiment of the present utility model;

[0028] Figure 2 is a partial three-dimensional assembly drawing of a non-contact tool dynamic runout measuring instrument according to an embodiment of the present utility model;

[0029] Figure 3 is a three-dimensional assembly drawing of the rotation driving device;

[0030] Figure 4 is an exploded view of the rotation driving device;

[0031] Figure 5 is a right view of the rotation driving device;

[0032] Figure 6 is Figure 5 a sectional view taken along A-A;

[0033] Figure 7 is Figure 6 an enlarged view of B in

[0034] Figure 8 is a three-dimensional assembly drawing of the linear driving device;

[0035] Figure 9 is an exploded view of the linear driving device;

[0036] Figure 10The control schematic diagram of a non-contact tool dynamic runout measuring instrument according to an embodiment of the present utility model;

[0037] Figure 11 The vision processing flow chart according to an embodiment of the present utility model.

[0038] Label description: 1. Rotation drive device; 10. Rotation drive assembly; 100. First motor; 101. Motor connecting plate; 102. Driving pulley; 103. Belt; 104. Driven pulley; 105. First through hole; 106. Third through hole; 11. Fixing assembly; 110. Tool holder; 111. Rotating shaft; 112. Taper hole; 113. Fixed seat; 114. Support seat; 115. Cylinder; 116. Pull rod; 117. Claw; 118. Top block; 119. Elastic member; 120. Second through hole; 121. Notch; 122. Ring groove; 123. Through hole; 124. First boss; 125. Second boss; 126. Bearing; 2. Optical measurement device; 21. Camera; 22. Light source; 3. Linear drive device; 30. X-direction drive assembly; 300. Second motor; 301. Second motor seat; 302. X-direction lead screw; 303. First slider; 304. First guide rail; 305. Slide table; 306. Second bracket; 307. Base plate; 308. Grating scale; 309. Travel switch; 31. Z-direction drive assembly; 310. Third motor; 311. Third motor seat; 312. Z-direction lead screw; 313. Second slider; 314. Second guide rail; 315. Third slider; 316. First bracket; 317. Column; 320. Groove; 321. Probe; 4. Display control module; 40. Controller; 401. First servo controller; 402. Second servo controller; 403. Third servo controller; 404. Camera controller; 41. Processor; 42. I / O input / output card; 43. D / A conversion card; 44. Image acquisition card; 451. Preprocessing module; 452. Measurement processing module; 453. Judgment output module; 46. Printer; 47. Display screen; 48. Alarm; 5. Base; 7. Tool; 70. Tool shank; 73. Pull stud. Detailed implementation manners

[0039] The technical solution of the utility model will be further described in detail below in conjunction with the preferred embodiments and their accompanying drawings in a non-limiting manner. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation of the present utility model.

[0040] As Figure 1 and Figure 2 shown, a non-contact tool dynamic runout measuring instrument according to an embodiment of the present utility model includes a rotary drive device 1, an optical measuring device 2, a linear drive device 3, and a base 5. The rotary drive device 1 is used to fix the tool 7 and drive it to rotate. The linear drive device 3 is fixedly connected to the optical measuring device 2 to adjust the position of the optical measuring device 2 for detecting the tool 7. Both the rotary drive device 1 and the linear drive device 3 are fixedly connected to the base 5.

[0041] As Figure 3 and Figure 6 shown, the rotary drive device 1 includes a fixing component 11 for placing the tool 7 and a rotary drive component 10. The rotary drive component 10 is fixedly connected to the fixing component 11 to drive the tool 7 on the fixing component 11 to rotate. The rotary drive component 10 includes a first motor 100. The fixing component 11 includes a tool holder 110 and a rotating shaft 111. The rotating shaft 111 is rotatably disposed within the tool holder 110. The tool 7 is fixedly connected to the rotating shaft 111. The first motor 100 is used to drive the rotating shaft 111 to rotate.

[0042] As Figure 6 and Figure 7As shown, the cutting tool 7 includes a pull stud 73. A pull jaw 117 is provided inside the rotating shaft 111. When the pull jaw 117 is in the locked state, the pull jaw 117 is engaged with the pull stud 73; when the pull jaw 117 is in the open state, the pull jaw 117 is disengaged from the pull stud 73. The fixing assembly 11 further includes a cylinder 115 and a pull rod 116. The pull rod 116 is disposed in the through hole 123 of the rotating shaft 111, and one end of the pull rod 116 is fixedly connected to the pull jaw 117. The cylinder 115 is disposed at the other end of the pull rod 116 for driving the pull rod 116 to move along the axial direction of the pull rod 116. Specifically, the rotary drive assembly 10 further includes a motor connecting plate 101. The cylinder 115 is disposed below the rotating shaft 111 and is fixedly connected to the bottom of the motor connecting plate 101 by screws. A third through hole 106 is formed in the motor connecting plate 101. A through hole 123 is formed in the rotating shaft 111. The pull rod 116 is disposed in the through hole 123, and one end is fixedly connected to the pull jaw 117 by screws, and the other end passes through the third through hole 106 and is disposed above the cylinder 115.

[0043] An annular groove 122 and a first boss 124 are provided on the inner wall of the rotating shaft 111. The inner diameter of the annular groove 122 is larger than the inner diameter of the through hole 123. An elastic member 119 is sleeved around the pull rod 116. One end of the elastic member 119 abuts against the first boss 124, and the other end abuts against a second boss 125 on the pull rod 116. When the pull jaw 117 is in the locked state, the pull rod 116 maintains the pull jaw 117 in the through hole 123 under the elastic force of the elastic member 119, and the side wall of the through hole 123 limits the pull jaw 117 so that the pull jaw 117 is engaged with the pull stud 73; when the cylinder 115 drives the pull rod 116 to move against the elastic force of the elastic member 119, the pull rod 116 drives the pull jaw 117 to be located in the annular groove 122. At this time, the pull jaw 117 is disengaged from the limiting action of the side wall of the through hole 123 and changes from the locked state to the open state.

[0044] The rotation drive assembly 10 further includes a driving pulley 102, a belt 103 and a driven pulley 104. The driving pulley 102 is fixedly connected to the first motor 100. The driven pulley 104 is sleeved on the rotating shaft 111. The belt 103 is connected between the driving pulley 102 and the driven pulley 104. The first motor 100 is adjacent to the cylinder 115. Specifically, the first motor 100 is arranged at an adjacent position to the cylinder 115 and its housing is fixedly connected to the motor connection plate 101 by screws. And, a first through hole 105 is formed on the motor connection plate 101. The output shaft of the first motor 100 passes through the first through hole 105 and is engaged with the driving pulley 103. The fixing assembly 11 further includes a fixing seat 113 and a support seat 114. The upper end of the tool holder 110 is fixedly connected to the fixing seat 113 by screws. A second through hole 120 is formed on the surface of the fixing seat 113. The tool holder 110 passes through the second through hole 120 and its bottom is fixedly connected to the top of the support seat 114 by screws. The bottom of the support seat 114 is fixedly connected to the motor connection plate 101 by screws. The rotating shaft 111 is received inside the tool holder 110 and its lower end is engaged with the driven pulley 104. Bearings 126 are respectively installed above and below between the rotating shaft 111 and the tool holder 110. A notch 121 is formed on the support seat 114. The belt 10 passes through the notch 121 and is connected between the driving pulley 103 and the driven pulley 104. The rotation drive assembly 10 drives the tool 7 to rotate, which is convenient for detecting the dynamic runout of the tool 7 and has higher accuracy.

[0045] As Figure 8 and 9 shown, the non-contact tool dynamic runout measuring instrument further includes a linear drive device 3. The linear drive device 3 includes an X-direction drive assembly 30 and a Z-direction drive assembly 31. The X-direction drive assembly 30 is fixedly connected to the Z-direction drive assembly 31 and drives the Z-direction drive assembly 31 to move along the X-axis direction. The Z-direction drive assembly 31 is fixedly connected to the optical measuring device 2 and drives the optical measuring device 2 to move along the Z-axis direction.

[0046] Among them, the X-direction driving component 30 includes a second motor 300, an X-direction lead screw 302, a first slider 303, and a slide table 305. The rotating shaft of the second motor 300 is coaxially and fixedly connected to the X-direction lead screw 302. The first slider 303 is slidably connected to the X-direction lead screw 302. The slide table 305 is fixedly connected to the first slider 303, and the slide table 305 is fixedly connected to the Z-direction driving component 30. Specifically, the X-direction driving component 30 further includes a second motor base 301 and a base plate 307. The bottom of the base plate 307 is fixedly connected to the base 5 by screws, and a groove 320 is formed on the base plate 307. The rotary driving device 1 is accommodated in the groove 320, and the bottom of the fixing seat 113 is fixedly connected to the base plate 307 by screws. The bottom of the second motor base 301 is fixedly connected to the rear end of the base plate 307 by screws. The rear end of the second motor base 301 is fixedly connected to the outer shell of the second motor 300 by screws, and the front end is fixedly connected to the X-direction lead screw 302. The rotating shaft of the second motor 300 is coaxially and fixedly connected to the X-direction lead screw 302 through a coupling. The X-direction driving component 30 further includes a pair of first guide rails 304 and a grating scale 308 symmetrically arranged on both sides of the X-direction lead screw 302. The first guide rail 304 is fixedly connected to the base plate 307. Both sides of the slide table 305 are slidably connected to the first guide rail 304, and the bottom of the slide table 305 is fixedly connected to the first slider 303. A travel switch 309 and a second bracket 306 are fixedly connected to the side surface of the slide table 305 by screws. The grating scale 308 is fixedly connected to the side position of the end face of the base plate 307 by screws, and the detection head 321 of the grating scale 308 is fixedly connected to the second bracket 306 by screws.

[0047] The Z-direction driving component 31 includes a third motor 310, a Z-direction lead screw 312, and a second slider 313. The rotating shaft of the third motor 310 is coaxially and fixedly connected to the Z-direction lead screw 312. The second slider 313 is slidably connected to the Z-direction lead screw 312, and the second slider 313 is fixedly connected to the first bracket 316. Specifically, the Z-direction driving component 31 further includes a third motor base 311 and a column 317. The column 317 is fixedly connected to the top of the slide table 305 by screws. The rear surface of the third motor base 311 is fixedly connected to the front surface of the column 317 by screws, and the top of the third motor base 311 is fixedly connected to the outer shell of the third motor 310 by screws, and the bottom is fixedly connected to the Z-direction lead screw 312. The rotating shaft of the third motor 310 is coaxially and fixedly connected to the Z-direction lead screw 312 through a coupling. The Z-direction driving component 31 further includes a second slider 313 sleeved on the Z-direction lead screw 312, a pair of second guide rails 314 symmetrically arranged on both sides of the Z-direction lead screw 312, a third slider 315, and a first bracket 316. The second guide rail 314 is fixedly connected to the front surface of the column 317. The third slider 315 is slidably connected to the first guide rail 304.

[0048] The optical measurement device 2 includes a camera 21 for capturing images of the cutting tool 7 during rotation; the optical measurement device 2 further includes a light source 22. The Z-direction driving assembly 31 further includes a first bracket 316 for fixing the camera 21 and the light source 22. The camera 21 and the light source 22 are respectively arranged on both sides of the cutting tool 7. Specifically, the bottom of the first bracket 316 is fixedly connected to the second slider 313, and both ends are fixedly connected to the third slider 315 by screws. The camera 21 and the light source 22 are respectively installed on both sides of the first bracket 316 and on both sides of the cutting tool 7. The light source 22 provides light for the camera 21 from the opposite direction, facilitating the camera 21 to capture images of the cutting tool 7, thereby improving image clarity.

[0049] As Figure 10 shown, the non-contact dynamic runout measuring instrument for cutting tools further includes a processor 41 and a controller 40. The processor 41 and the controller 40 are electrically connected and used to send control instructions to the controller 40. The controller 40 is electrically connected to the rotary driving assembly 10 and controls the rotary driving assembly 10 to drive the cutting tool 7 to rotate. Specifically, in this embodiment, the processor 41 is integrated in the camera 21. The non-contact dynamic runout measuring instrument for cutting tools further includes an I / O input / output card 42. The processor 41 is electrically connected to the I / O input / output card 42, and the I / O input / output card 42 is electrically connected to the controller 40 for transmitting the control instructions of the processor 41 to the controller 40 and feeding back the signals of the controller 40 to the processor 41. The controller 40 is electrically connected to the first motor 100 and controls the rotation of the first motor 100. The first motor 100 drives the rotary shaft 111 to rotate, thereby driving the cutting tool 7 to rotate. The controller 40 is electrically connected to the cylinder 114 and controls the movement of the cylinder 114. The controller 40 is electrically connected to the second motor 300 and controls the rotation of the second motor 300. The X-direction lead screw 302 converts the rotational motion of the second motor 300 into a linear motion of the first slider 303. The first slider 303 drives the Z-direction driving assembly 31 to move in the X direction. The controller 40 is electrically connected to the third motor 310 and controls the rotation of the third motor 310. The Z-direction lead screw 312 and the second slider 313 convert the rotation of the third motor 310 into a linear motion of the second slider 313. The second slider 313 drives the first bracket 316 to move in the Z direction. The first bracket 316 drives the optical measurement device 2 to move in the Z direction.

[0050] The processor 41 is electrically connected to the camera 21 for processing the image and obtaining the runout value of the tool 7. The non-contact tool dynamic runout measuring instrument further includes an image acquisition card 44. The image acquisition card 44 is electrically connected to both the camera 21 and the processor 41, and the image acquisition card 44 is used to convert the image of the tool 7 captured by the camera into a digital signal and transmit it to the processor 41. The processor 41 is also electrically connected to a D / A conversion card 43. The D / A conversion card 43 is electrically connected to the light source 22 and controls the on / off of the light source 22. The non-contact tool dynamic runout measuring instrument further includes a printer 46, a display screen 47, and an alarm 48. The printer 46 is electrically connected to the processor 41 and is used to print the qualified data into labels, which is convenient for subsequent use and takes a short time, being convenient and fast. The display screen 47 is electrically connected to the processor 41 for displaying the runout value of the tool 7. The alarm 48 is electrically connected to the processor 41. When the obtained runout value is unqualified, the alarm 48 gives an alarm.

[0051] As Figure 11 shown, the processor 41 includes a preprocessing module 451, a measurement processing module 452, and a judgment output module 453. The preprocessing module 451 is electrically connected to the image acquisition card 44. The preprocessing module 451 is electrically connected to the measurement processing module 452. The measurement processing module 452 is electrically connected to the judgment output module 453. The judgment output module 453 is electrically connected to the display screen 47.

[0052] An algorithm for processing images is integrated in the processor 41. The algorithm includes a preprocessing module 451, a measurement processing module 452, and a judgment output module 453. The image acquisition card 44 is electrically connected to the preprocessing module 451 and converts the image of the tool 7 captured by the camera 21 into a digital signal and transmits it to the preprocessing module 451. The preprocessing module 451 corrects the illumination of the image through the algorithm, performs binary conversion, filtering, and color extraction on the corrected image. The preprocessing module 451 is electrically connected to the measurement processing module 452 and transmits the preprocessed image to the measurement processing module 452. The measurement processing module 452 performs shape matching on the preprocessed image through the algorithm. The measurement processing module 452 is electrically connected to the judgment output module 453 and transmits the matching result to the judgment output module 452. The judgment output module 453 compares the matching result through the algorithm and judges the result and outputs the runout value of the tool 7 according to the preset tolerance. The judgment output module 453 is electrically connected to the display screen 47 and transmits the judgment result to the display screen 47 in real time.

[0053] During use, place the shank 71 of the cutting tool 7 into the tapered hole 112. Start the switch of the cylinder 115. The controller 40 controls the movement of the cylinder 115, and the draw claw 117 and the drawbolt 73 are tightly connected. The shank 71 and the rotating shaft 111 inside the tool holder 110 are closely fitted. Start the measurement switch. The controller 40 controls the first motor 100 to rotate. The driving wheel 102 mating with the first motor 100 drives the driven wheel 104 to rotate through the transmission of the belt 103. The driven wheel 104 drives the rotating shaft 111 to rotate, thereby driving the cutting tool 7 to rotate. The controller 40 feeds back the signal to the processor 41 through the I / O input / output card 42.

[0054] The processor 41 sends signals to the camera 21, the light source 22, and the second motor 300 according to a preset program. The processor 41 transmits the signal to the light source 22 through the D / A conversion card 43 and controls the light source 22 to turn on. The image captured by the camera 21 is transmitted to the processor 41 by the image acquisition card 44.

[0055] The I / O input / output card 42 transmits the instruction to the controller 40. The controller 40 controls the second motor 300 to rotate. The first slider 303 drives the slide table 305 to move along the X direction. When the travel switch 309 detects the spindle center, it sends a in-place signal to the controller 40. The controller 40 controls the second motor 300 to stop and feeds back the signal to the processor 41 through the I / O input / output card 42. The processor 41 sends a signal to the third motor 310 according to a preset program. The I / O input / output card 42 transmits the instruction to the controller 40. The controller 40 controls the third motor 310 to rotate. The second slider 313 drives the first bracket 316 to move along the Z direction. When the cutting tool 7 appears within the detection field of view of the camera 21, the processor 41 sends a deceleration instruction to the third motor 310; when the image of the cutting tool 7 occupies two-thirds of the detection field of view of the camera 21, the processor 41 sends a stop instruction to the third motor 310.

[0056] The first motor 100 always drives the cutting tool 7 to rotate at a constant speed and cooperates with the camera 21 for focusing. After the camera 21 finishes focusing, it automatically takes an image of the cutting tool 7.

[0057] The image acquisition card 44 uploads the captured image of the cutting tool 7 to the processor 41. The data processing software 45 selects the image picture for data processing according to the set algorithm. In the preprocessing module 451, the image is corrected for illumination through the algorithm, and then the corrected image is subjected to binary conversion, filtering, and color extraction. The preprocessed picture is subjected to shape matching through the algorithm in the measurement processing module 452. The matching result enters the judgment output module 453 and, according to the preset tolerance, judges the result and immediately displays the runout value of the cutting tool 7 on the display screen 47. The qualified runout value is automatically printed into a label by the printer 46. The entire detection process of the cutting tool 7 takes about 8 seconds, which is short in time and convenient to operate.

[0058] A non-contact tool dynamic runout measuring instrument according to an embodiment of the present utility model drives a tool 7 to rotate by using a rotation driving assembly 10, uses an optical measuring device 2 to record an image of the tool 7 during rotation, and uses a processor 41 to perform data analysis on the image, so as to obtain the dynamic runout value of the tool 7, with higher accuracy. By using a camera 21 to capture an image of the tool 7 and using a preprocessing module 451, a measurement processing module 452 and a judgment output module 453 to perform data analysis on the image of the tool 7 to obtain the runout value of the tool 7, and the entire measurement does not require manual participation, which is convenient and simple, greatly improving the measurement efficiency. By arranging the camera 21 and the light source 22 on both sides of the tool 7, the light source 22 provides light for the camera 21 from the opposite direction, facilitating the camera 21 to capture an image of the tool 7, thereby improving the image clarity and making the runout value more accurate. By arranging an X-direction driving assembly 30 to drive a Z-direction driving assembly 31 and the optical measuring device 2 to move along the X direction, the shooting range of the camera 21 is expanded, and at the same time, the measurement of the runout values of tools 7 with different diameters is also satisfied, with stronger adaptability and more accurate measurement results.

[0059] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A non-contact tool dynamic runout measuring instrument for detecting the runout value of a tool (7), characterized in that, Comprising: A rotary driving device (1), the rotary driving device (1) includes a fixing component (11) for placing a cutting tool (7) and a rotary driving component (10), and the rotary driving component (10) is fixedly connected to the fixing component (11) for driving the cutting tool (7) on the fixing component (11) to rotate; An optical measuring device (2), the optical measuring device (2) includes a camera (21), and the camera (21) is used for taking images of the cutting tool (7) during rotation; A controller (40), the controller (40) is electrically connected to the rotary driving component (10) and controls the rotary driving component (10) to drive the cutting tool (7) to rotate; A processor (41), the processor (41) is electrically connected to the controller (40) and is used for sending control instructions to the controller (40); the processor (41) is electrically connected to the camera (21) for processing the images and obtaining the runout value of the cutting tool (7); A display screen (47), the display screen (47) is electrically connected to the processor (41) for displaying the runout value of the cutting tool (7).

2. The non-contact dynamic runout measuring instrument for cutting tools according to claim 1, wherein The non-contact dynamic runout measuring instrument for cutting tools further includes an image acquisition card (44), and the image acquisition card (44) is electrically connected to the camera (21) and the processor (41) simultaneously.

3. The non-contact tool dynamic runout measuring instrument according to claim 2, characterized in that, The processor (41) includes a preprocessing module (451), a measurement processing module (452) and a judgment output module (453), the preprocessing module (451) is electrically connected to the image acquisition card (44), the preprocessing module (451) is electrically connected to the measurement processing module (452), the measurement processing module (452) is electrically connected to the judgment output module (453), and the judgment output module (453) is electrically connected to the display screen (47).

4. The non-contact tool dynamic runout measuring instrument according to claim 1, characterized in that, The rotary driving component (10) includes a first motor (100), the fixing component (11) includes a tool holder (110) and a rotary shaft (111), the rotary shaft (111) is rotatably arranged in the tool holder (110) through a bearing (126), the cutting tool (7) is fixedly connected to the rotary shaft (111), and the first motor (100) is used for driving the rotary shaft (111) to rotate.

5. The non-contact dynamic runout measuring instrument for cutting tools according to claim 4, characterized in that The cutting tool (7) includes a pull stud (73), and a pull claw (117) is arranged in the rotary shaft (111). When the pull claw (117) is in a locked state, the pull claw (117) is clamped with the pull stud (73); when the pull claw (117) is in an open state, the pull claw (117) is disengaged from the pull stud (73).

6. The non-contact tool dynamic runout measuring instrument according to claim 5, characterized in that, The fixed component (11) further includes a cylinder (115) and a pull rod (116). The pull rod (116) is arranged in the through hole (123) of the rotating shaft (111), and one end of the pull rod (116) is fixedly connected to the claw (117). The cylinder (115) is arranged at the other end of the pull rod (116) and is used to drive the pull rod (116) to move along the axial direction of the pull rod (116). The controller (40) is electrically connected to the cylinder (115) and controls the cylinder (115) to drive the pull rod (116) to move.

7. The non-contact tool dynamic runout measuring instrument according to claim 6, characterized in that, The inner wall of the rotating shaft (111) is provided with an annular groove (122) and a first boss (124). The inner diameter of the annular groove (122) is larger than the inner diameter of the through hole (123). An elastic member (119) is sleeved around the pull rod (116). One end of the elastic member (119) abuts against the first boss (124), and the other end abuts against a second boss (125) on the pull rod (116). When the claw (117) is in the locked state, the pull rod (116) maintains the claw (117) in the through hole (123) under the elastic force of the elastic member (119). The side wall of the through hole (123) limits the claw (117) so that the claw (117) is engaged with the rivet (73). When the cylinder (115) drives the pull rod (116) to move against the elastic force of the elastic member (119), the pull rod (116) drives the claw (117) to be located in the annular groove (122). At this time, the claw (117) is disengaged from the limiting action of the side wall of the through hole (123) and changes from the locked state to the open state.

8. The non-contact tool dynamic runout measuring instrument according to claim 7, wherein The rotary drive assembly (10) further includes a driving wheel (102), a belt (103) and a driven wheel (104). The driving wheel (102) is fixedly connected to the output shaft of the first motor (100). The driven wheel (104) is sleeved on the rotating shaft (111). The belt (103) is connected between the driving wheel (102) and the driven wheel (104). The first motor (100) is adjacent to the cylinder (115).

9. The non-contact tool dynamic runout measuring instrument according to claim 1, wherein The non-contact tool dynamic runout measuring instrument further includes a linear drive device (3). The linear drive device (3) includes an X-direction drive assembly (30) and a Z-direction drive assembly (31). The X-direction drive assembly (30) is fixedly connected to the Z-direction drive assembly (31) and drives the Z-direction drive assembly (31) to move along the X-axis direction. The Z-direction drive assembly (31) is fixedly connected to the optical measuring device (2) and drives the optical measuring device (2) to move along the Z-axis direction.

10. The non-contact tool dynamic runout measuring instrument according to claim 9, characterized in that, The optical measuring device (2) further includes a light source (22). The Z-direction drive assembly (31) further includes a first bracket (316) for fixing the camera (21) and the light source (22). The camera (21) and the light source (22) are respectively arranged on both sides of the tool (7).

Images