A detection device for testing the parallelism of a tool holder hole

Abstract

The application is suitable for the technical field of tool holder hole detection, and provides a detection equipment for parallel uniformity degree test of tool holder holes, which comprises a workbench, a driving mounting frame, two groups of test components symmetrically arranged on two sides of the tool holder, and an industrial control analysis unit electrically connected with the driving mounting frame and the test components. A plurality of tool holder holes are arranged on the side wall of the tool holder, and the two groups of test components are used for respectively detecting the two groups of tool holder holes symmetrically arranged. Each group of test components comprises a visual detector and a detection mechanism used for extending into the corresponding tool holder hole to collect contour point clouds. By symmetrically arranging two groups of test components on two sides of the tool holder, and by making the two groups of test components consistent in structure and work synchronously, the parallel uniformity degree of the tool holder holes symmetrically arranged on two sides of the tool holder is simultaneously detected, so that the detection efficiency is improved. The two groups of detection results are compared in real time by the industrial control analysis unit, so that the uniformity degree or the symmetry degree between the two holes can be judged, and the use performance of the subsequent tool is improved.

Description

Technical Field

[0001] This invention relates to the field of tool holder hole inspection technology, and more specifically, to an inspection device for testing the parallelism and uniformity of tool holder holes. Background Technology

[0002] In the fields of machining and assembly, the tool holder, as a key functional component for mounting and clamping cutting tools, directly affects machining quality and equipment operational stability due to its structural accuracy. Tool holders typically have several tool holder holes for mounting and fixing cutting tools. The spatial orientation accuracy of these holes, especially the parallelism and uniformity of their axes relative to the tool holder's rotation reference axis, is a crucial technical indicator for evaluating the machining quality of the tool holder. Insufficient parallelism or symmetry among the tool holder holes will cause the installed tool axis to deviate from its theoretical position, thus affecting machining accuracy, tool life, and the smoothness of the cutting process. In severe cases, it can even lead to equipment damage or safety accidents.

[0003] Conventional methods for inspecting the parallelism of tool holder holes often involve measuring each hole individually. This method can only assess the machining quality of a single hole and cannot effectively evaluate the consistency or symmetry between paired tool holder holes. Since tool holders are usually used with tools installed in pairs, the spatial consistency of the axes of the tool holder holes on both sides has a decisive impact on the overall movement trajectory of the tool. If only the passability of a single hole is considered while the coordination accuracy between the two holes is ignored, the overall consistency of the tool after installation will deteriorate, ultimately affecting the surface quality and dimensional accuracy of the workpiece.

[0004] In addition, contact measurement methods (such as trigger probes) require point-by-point triggering when collecting data on the inner wall of the hole. The sampling density is limited by the probe's movement speed and triggering frequency, making it difficult to obtain sufficiently dense and accurate contour information of the hole wall within a limited time. A detection device for testing the parallelism uniformity of tool holder holes is proposed to improve the existing problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a testing device for testing the parallelism uniformity of tool holder holes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A testing device for testing the parallelism uniformity of tool holder holes includes a worktable, a drive mounting bracket, two sets of test components symmetrically arranged on both sides of the tool holder, and an industrial control analysis unit electrically connected to the drive mounting bracket and the test components.

[0007] The tool holder sidewall is provided with several tool holder holes, and the two sets of test components are used to detect two sets of symmetrically arranged tool holder holes respectively. Each set of test components includes a vision detector and a detection mechanism for extending into the corresponding tool holder hole to collect contour point clouds. The industrial control analysis unit is used to control the two sets of vision detectors to move to a calibration position symmetrical about the rotation axis of the drive mounting frame, acquire and compare the images of the two tool holder holes, and when they match, fit and determine the rotation axis of the drive mounting frame as the rotation reference axis.

[0008] The industrial control analysis unit is also used to construct the first spatial hole axis and the second spatial hole axis of the tool holder holes on both sides according to the point cloud collected by the two sets of detection mechanisms, calculate the parallelism error between the first spatial hole axis and the second spatial hole axis and the rotation reference axis, generate the first parallelism value and the second parallelism value, and calculate the mutual deviation value between the first spatial hole axis and the second spatial hole axis.

[0009] The present invention is further configured such that: the industrial control analysis unit is also used to execute evaluation logic, specifically: First judgment logic: If either the first parallelism value or the second parallelism value exceeds the preset parallelism error, the corresponding tool holder hole is determined to be unqualified in machining. The industrial control analysis unit issues an alarm signal to guide the operator to perform manual re-inspection.

[0010] Second evaluation logic: After completing the first evaluation logic, if the mutual deviation value exceeds the preset uniformity error, the uniformity of the tool holder holes on both sides is determined to be unqualified, and the industrial control analysis unit issues an alarm signal to guide the operator to perform manual re-inspection.

[0011] The third evaluation logic: Combining the results of the first and second evaluation logics, when the first parallelism value, the second parallelism value, and the mutual deviation value are all less than their respective preset thresholds, the parallelism of the tool holder holes on both sides is judged to be qualified.

[0012] The invention is further configured such that: a mounting platform is provided on the top of the worktable, and the drive mounting bracket is mounted on the top of the mounting platform. The tool holder is mounted on the drive mounting bracket, and the drive mounting bracket is used to drive the tool holder to rotate and adjust its position.

[0013] The invention is further configured such that the test assembly includes an electrically operated telescopic component, a horizontal adjustment component, a vertical adjustment component, and a mounting base. The telescopic direction of the electrically operated telescopic component is parallel to the axial direction of the tool holder hole. The horizontal adjustment component is slidably connected to the telescopic portion of the electrically operated telescopic component, and is used to adjust the position horizontally.

[0014] The invention is further configured such that: the vertical adjustment member is slidably connected to the horizontal adjustment member, and the vertical adjustment member is used to adjust the position along the vertical direction. The mounting base is disposed on the vertical adjustment member, and both the detection mechanism and the visual detector are mounted on the mounting base.

[0015] The invention is further configured such that: the visual detector is located below the detection mechanism, and the vertical distance between the visual detector and the detection mechanism is a preset fixed value. The industrial control analysis unit is used to, during the hole alignment process of the detection mechanism, first control the visual detector to align with the tool holder hole, and then control the vertical adjustment component to move according to the preset fixed value, so that the detection mechanism is aligned with the tool holder hole.

[0016] The invention is further configured such that the detection mechanism includes a rotary adjustment component, a mounting rod, and a laser detector. The output end of the rotary adjustment component is connected to the mounting rod, and the rotary adjustment component is used to drive the mounting rod to rotate around its own axis.

[0017] The invention is further configured such that: the insertion end of the mounting rod has a tapered guide portion, and a mounting groove is formed on one side of the mounting rod, with the laser detector embedded in the mounting groove. The detection optical axis of the laser detector is perpendicular to the axis of the mounting rod, and the laser detector is used to collect radial distance information of the inner wall of the tool holder hole during rotation to generate a contour point cloud.

[0018] The invention is further configured such that: a first detection area and a second detection area are spaced apart along the axial direction inside the tool holder hole. The industrial control analysis unit controls the detection mechanism to rotate at least one revolution in the first and second detection areas respectively to collect the entire circumference contour point cloud, and fits the cross-sectional center of each detection area using the least squares method.

[0019] The present invention is further configured such that: the axis of the first spatial hole and the axis of the second spatial hole are respectively constructed by connecting the center of the cross section of the first detection area and the center of the cross section of the second detection area corresponding to the tool holder holes on both sides.

[0020] In summary, this application includes at least one of the following beneficial technical effects: (1) By symmetrically setting two sets of test components on both sides of the tool holder, and the two sets of test components have the same structure and work synchronously, the parallelism of the tool holder holes symmetrically set on both sides of the tool holder can be tested simultaneously, which improves the testing efficiency. The two sets of test results can be compared in real time through the industrial control analysis unit, which can judge the uniformity or symmetry between the two holes and improve the performance of subsequent tools.

[0021] (2) By setting a rotating adjustment component, a mounting rod and a laser detector embedded in the mounting groove of the mounting rod in the detection mechanism, the laser detector is rotated with the mounting rod to collect radial distance information of the inner wall inside the tool holder hole to generate a contour point cloud. By using non-contact laser scanning, the contour data of the entire circumference of the hole wall is continuously and quickly acquired during the rotation process.

[0022] (3) By setting a vision detector on the mounting base, after the tool holder is installed, the vision detectors of the two sets of test components are first driven to move to the preset symmetrical calibration position, and the images of the tool holder holes on both sides are captured and compared. If the features of the images on both sides are consistent, it is determined that the tool holder is installed correctly, and the spatial axis of the drive mounting bracket output shaft is automatically fitted as the rotation reference axis, thus realizing the verification of the tool holder installation posture and the establishment of the rotation reference, reducing the systematic measurement error caused by clamping deviation, and improving the reliability of the test results.

[0023] (4) The industrial control analysis unit calculates the first parallelism value between the first spatial hole axis and the rotary reference axis, the second parallelism value between the second spatial hole axis and the rotary reference axis, and the mutual deviation value between the first spatial hole axis and the second spatial hole axis. When any one of them exceeds the tolerance, it clearly indicates the out-of-tolerance item. It can distinguish whether the fault source is a single hole machining quality problem or a relative position deviation problem between two holes. It provides direction for guiding operators to carry out targeted manual re-inspection and equipment adjustment, and improves the traceability of the test results and the convenience of fault location. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a testing device for testing the parallelism uniformity of tool holder holes according to the present invention.

[0025] Figure 2 for Figure 1 The front view.

[0026] Figure 3 for Figure 1 Top view.

[0027] Figure 4 for Figure 3 A magnified structural diagram of area A in the middle.

[0028] Figure 5 This is a schematic diagram of the tool holder structure in this invention.

[0029] Figure 6 This is a schematic diagram of the detection component in this invention.

[0030] Figure 7 This is a schematic diagram of the detection state structure of the tool holder hole in this invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Mounting platform; 2. Drive mounting bracket; 3. Tool holder; 31. Tool holder hole; 311. First inspection area; 312. Second inspection area; 4. Test components; 41. Electric telescopic component; 42. Horizontal adjustment component; 43. Visual detector; 44. Vertical adjustment component; 45. Mounting base; 46. Detection mechanism; 461. Rotary adjustment component; 462. Mounting rod; 463. Laser detector. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] Please see Figures 1-7 The present invention provides the following technical solutions: Example 1, see Figure 1 A testing device for testing the parallelism uniformity of tool holder holes includes a workbench 1 and an industrial control analysis unit.

[0035] See Figure 2 The workbench 1 serves as the supporting base for this testing equipment, and a mounting platform 11 is installed on its top. The mounting platform 11 is fixedly installed on the top surface of the workbench 1 and is used to support and install the drive mounting frame 2. The drive mounting frame 2 is installed on the top of the mounting platform 11, and the tool holder 3 is the workpiece to be tested, which is installed on the drive mounting frame 2.

[0036] See Figure 5 The tool holder 3 is usually provided with several tool holder holes 31. In order to detect the several tool holder holes 31 on the tool holder 3, the tool holder 3 is driven to rotate by the drive mounting bracket 2 to adjust its circumferential position so that the tool holder holes 31 on the tool holder 3 can be detected.

[0037] Since the drive mounting bracket 2 is used to drive the tool holder 3 to rotate, the spatial axis of the drive output shaft of the drive mounting bracket 2 is fitted and determined as the rotation reference axis for subsequent testing. The parallelism test of the tool holder hole 31 is to detect the parallelism error between the spatial hole axis of the tool holder hole 31 and the rotation reference axis. In the specific testing process, the parallelism error of the spatial hole axis relative to the rotation reference axis of the tool holder 3 is calculated by the industrial control analysis unit, and the parallelism test result of the tool holder hole 31 can be obtained.

[0038] Specifically, the industrial control analysis unit calculates the angle between the spatial hole axis and the rotation reference axis, and generates a parallelism error based on this angle. In this embodiment, the parallelism error is represented by the angular deviation between the spatial hole axis and the rotation reference axis; the larger the angular deviation, the worse the parallelism.

[0039] In this embodiment, the drive mounting bracket 2 can be a servo motor-driven rotary platform, with the output end of the servo motor fixedly connected to the bottom of the tool holder 3. The industrial control analysis unit is electrically connected to the servo motor, and by controlling the rotation angle of the servo motor, the tool holder 3 is positioned in the circumferential direction.

[0040] The tool holder holes 31 on the tool holder 3 are usually arranged in pairs symmetrically. However, in the parallelism and uniformity test of the tool holder holes 31, the parallelism and uniformity of each hole is usually measured sequentially. This test method can only evaluate the parallelism of a single hole, which is inefficient. Furthermore, this test method is difficult to effectively evaluate the uniformity or symmetry between two holes, resulting in poor overall consistency after the tool is installed, which affects the use of subsequent tools.

[0041] In order to synchronously test the paired tool holder holes 31 on the tool holder 3, a set of test components 4 are respectively set on both sides of the tool holder 3. That is, the two sets of test components 4 are symmetrically set on both sides of the tool holder 3, so that the tool holder holes 31 symmetrically set on both sides of the tool holder 3 can be aligned with the corresponding test components 4. The two sets of test components 4 have the same structure and are used to test the parallelism and uniformity of the tool holder holes 31 symmetrically set on both sides of the tool holder 3.

[0042] In this embodiment, the two sets of test components 4 work simultaneously, collecting the detection data of their respective corresponding tool holder holes 31. The two sets of detection results can be compared to verify the consistency of the detection data. When the deviation between the two sets of detection results exceeds a preset threshold, the industrial control analysis unit issues an alarm signal to prompt the operator to check the equipment status or retest.

[0043] The specific structure of test component 4 is as follows: See Figure 6 The test assembly 4 includes an electric telescopic component 41 and a testing mechanism 46. The electric telescopic component 41 is mounted on the top of the workbench 1, and the telescopic direction of the electric telescopic component 41 is parallel to the axial direction of the tool holder hole 31.

[0044] See Figure 2 and Figure 6 The detection mechanism 46 is used to detect the parallelism of the tool holder hole 31, and the electric telescopic component 41 is used to drive the detection mechanism 46 to move along the horizontal feed direction, so that the detection mechanism 46 can extend into or out of the tool holder hole 31.

[0045] In this embodiment, the electric telescopic component 41 can be an electric actuator or a linear servo module. The electric telescopic component 41 includes a fixed part and a telescopic part. The fixed part is fixedly installed on the top of the worktable 1, and the telescopic part extends and retracts in the horizontal direction under electric drive. The industrial control analysis unit is electrically connected to the electric telescopic component 41 and is used to control the extension stroke and speed of the electric telescopic component 41.

[0046] See Figure 2 and Figure 6 A horizontal adjustment member 42 is slidably connected to the top of the electric telescopic member 41. The horizontal adjustment member 42 is used to drive the detection mechanism 46 to move in the horizontal lateral direction (i.e., the horizontal direction perpendicular to the telescopic direction of the electric telescopic member 41) to adjust the position of the detection mechanism 46 in the horizontal lateral direction so that it is aligned with the opening of the tool holder hole 31.

[0047] In this embodiment, the horizontal adjustment component 42 can be a combination of a linear guide rail and a lead screw and nut mechanism, or a linear motor module. The horizontal adjustment component 42 includes a horizontal slide rail and a horizontal slider. The horizontal slide rail is fixedly installed at the end of the telescopic part of the electric telescopic component 41, and the horizontal slider is slidably installed on the horizontal slide rail. The horizontal adjustment component 42 is controlled by the industrial control analysis unit. By driving the horizontal slider to slide along the horizontal slide rail, the position adjustment of the detection mechanism 46 in the horizontal transverse direction is realized.

[0048] See Figure 2 and Figure 6 A vertical adjustment member 44 is slidably connected to the horizontal adjustment member 42. The sliding direction of the vertical adjustment member 44 is perpendicular to the sliding direction of the horizontal adjustment member 42 and perpendicular to the extension direction of the electric telescopic member 41. The vertical adjustment member 44 is used to drive the detection mechanism 46 to move in the vertical direction, so as to adjust the position of the detection mechanism 46 in the vertical direction.

[0049] In this embodiment, the vertical adjustment component 44 can be a combination of a linear guide rail and a lead screw and nut mechanism, or a linear motor module. The vertical adjustment component 44 includes a vertical slide rail and a vertical slider. The vertical slide rail is fixedly installed on the horizontal slider of the horizontal adjustment component 42, and the vertical slider is slidably installed on the vertical slide rail. The vertical adjustment component 44 is controlled by the industrial control analysis unit. By driving the vertical slider to slide along the vertical slide rail, the position adjustment of the detection mechanism 46 in the vertical direction is realized.

[0050] See Figure 2 and Figure 6 A mounting base 45 is slidably connected to one side of the vertical adjustment member 44. Specifically, the mounting base 45 is fixedly mounted on the vertical slider and rises and falls together with the vertical slider. The detection mechanism 46 is mounted on the mounting base 45. The vertical adjustment member 44 drives the vertical slider to slide, thereby causing the mounting base 45 and the detection mechanism 46 on it to move in the vertical direction.

[0051] During testing, the spatial axis of the output shaft of the drive mounting bracket 2 is first used as the rotation reference axis. Then, the horizontal adjustment component 42 and the vertical adjustment component 44 drive the detection mechanism 46 to align with the hole opening. The electric telescopic component 41 pushes the detection mechanism 46 to simultaneously extend into the tool holder hole 31 to collect data. The industrial control analysis unit fits the spatial axis of each hole based on this and calculates the angle between it and the reference axis to obtain the parallelism error of a single hole. At the same time, the system compares the error values ​​measured on both sides in real time. If the deviation exceeds the preset threshold, an alarm is issued.

[0052] The tool holder 3 typically has several tool holder holes 31. After one set of symmetrical tool holder holes 31 has been inspected, the electric telescopic component 41 drives the inspection mechanism 46 to exit the tool holder hole 31. The industrial control analysis unit controls the drive mounting frame 2 to drive the tool holder 3 to rotate sequentially according to the preset circumferential angle parameters between the hole groups, so that each set of symmetrical holes reaches the inspection station one by one, and the above-mentioned inspection and step-by-step evaluation steps are repeated at each station. After all hole groups have been inspected, all results are summarized. Only when the parallelism error and mutual deviation value of all hole groups are qualified is the overall parallelism of the tool holder 3 determined to be qualified.

[0053] In Example 2, the above structure enables synchronous detection of symmetrically arranged tool holder holes 31. During the detection, two sets of detection mechanisms 46 synchronously collect data of the paired tool holder holes 31, effectively judging the uniformity or symmetry between the two holes. However, the collection of data inside the tool holder holes 31 is usually done by contact measurement. However, contact measurement requires triggering point by point, which is inefficient and cannot obtain dense data that can truly reflect the micro-morphology of the hole wall within a limited time.

[0054] To achieve rapid and accurate data acquisition of the borehole wall, a laser detector 463 is installed to penetrate deep into the borehole for data acquisition. The specific structure of the detection mechanism 46 is as follows: See Figure 6 The detection mechanism 46 includes a rotation adjustment component 461, a mounting rod 462, and a laser detector 463.

[0055] See Figure 4 , Figure 6 , Figure 7 The rotary adjustment component 461 is mounted on the mounting base 45, and the output end of the rotary adjustment component 461 is connected to the mounting rod 462. In this embodiment, the rotary adjustment component 461 is a rotary motor, and the output end of the rotary motor is fixedly connected to one end of the mounting rod 462. The rotary motor drives the mounting rod 462 to rotate around its own axis.

[0056] See Figure 6 and Figure 7A mounting groove is provided on one side of the mounting rod 462, and the laser detector 463 is embedded inside the mounting groove. The detection optical axis of the laser detector 463 is perpendicular to the axis of the mounting rod 462, and the laser detector 463 rotates together with the mounting rod 462. The rotation adjustment component 461 is used to drive the laser detector 463 to rotate, and the laser detector 463 is used to collect radial distance information of the inner wall of the tool holder hole 31 during rotation to generate a contour point cloud.

[0057] The insertion end of the mounting rod 462 has a tapered guide portion located at the insertion end of the mounting rod 462, while the mounting groove and laser detector 463 are located behind it. During insertion, the tapered guide portion guides the mounting rod 462 to slide into the tool holder hole 31. After the front end of the mounting rod 462 enters the hole, the laser detector 463 begins to perform contour scanning.

[0058] In this embodiment, the laser detector 463 is a laser displacement sensor. The laser displacement sensor is used to collect distance information from various points on the inner wall surface of the tool holder hole 31 to the laser displacement sensor. The laser displacement sensor is electrically connected to the industrial control analysis unit, and the distance information it collects is transmitted to the industrial control analysis unit. The industrial control analysis unit generates a contour point cloud of the inner wall of the tool holder hole 31 based on the distance information.

[0059] See Figure 7 When the detection mechanism 46 extends into the tool holder hole 31, the detection optical axis of the laser detector 463 is perpendicular to the axial direction of the tool holder hole 31. Specifically, after the mounting rod 462 extends into the tool holder hole 31, the detection beam emitted by the laser detector 463 irradiates the inner wall surface of the tool holder hole 31 radially, and the laser displacement sensor receives the reflected light and calculates the distance information.

[0060] In the specific testing process, in order to better reflect the internal condition of the tool holder hole 31 and to achieve the purpose of calculating the spatial hole axis, at least two non-coincident points on the testing mechanism 46 need to be known during the data acquisition process. The two spatial coordinates are then fitted to form the spatial hole axis of the tool holder hole 31.

[0061] See Figure 7 To achieve the purpose of acquiring two spatial coordinates, a first detection area 311 and a second detection area 312 are sequentially arranged inside the tool holder hole 31 from the outside to the inside (i.e., from the hole opening to the hole bottom). The first detection area 311 is located at the proximal end of the tool holder hole 31 (i.e., the end closer to the hole opening), and the second detection area 312 is located at the distal end of the tool holder hole 31 (i.e., the end closer to the hole bottom). The first detection area 311 and the second detection area 312 are arranged at intervals along the axial direction of the tool holder hole 31.

[0062] In this embodiment, the first detection area 311 and the second detection area 312 are located at approximately one-third and two-thirds of the axial length of the tool holder hole 31, respectively, but the specific positions can be adjusted according to actual detection needs.

[0063] The rotating adjustment component 461 drives the laser detector 463 to rotate at least one revolution in the first detection area 311 and the second detection area 312 respectively, so as to collect the whole-circumference contour point cloud of the inner wall of the tool holder hole 31.

[0064] After the laser detector 463 collects data from the first detection area 311 and the second detection area 312, it needs to process the data through the industrial control analysis unit.

[0065] During the detection and data processing stage, the industrial control analysis unit is used to fit the center of the first cross-section of the first detection area 311 and the center of the second cross-section of the second detection area 312 based on the point cloud collected by the laser detector 463. By calculating the data of the two sets of test components 4, the axis of the first spatial hole and the axis of the second spatial hole corresponding to the tool holder holes 31 on both sides are obtained.

[0066] The industrial control analysis unit executes the following evaluation logic: First evaluation logic (individual parallelism detection): The industrial control analysis unit calculates the parallelism error of the first spatial hole axis and the second spatial hole axis relative to the rotation reference axis, respectively, and generates a first parallelism value and a second parallelism value. If either value exceeds the preset parallelism error, the tool holder hole 31 on the corresponding side is determined to be unqualified in machining.

[0067] The second evaluation logic (mutual consistency detection): After completing the first evaluation logic, the industrial control analysis unit calculates the spatial angle or parallelism deviation between the axis of the first spatial hole and the axis of the second spatial hole, and generates a mutual deviation value. If the mutual deviation value exceeds the preset consistency error, the consistency of the tool holder holes 31 on both sides is determined to be unqualified.

[0068] The third evaluation logic is the comprehensive evaluation logic, which is used to produce a comprehensive conclusion: the industrial control analysis unit integrates the results of the first evaluation logic and the second evaluation logic. When the first parallelism value, the second parallelism value and the mutual deviation value are all less than their respective preset thresholds, the parallelism of the tool holder holes 31 on both sides is determined to be qualified.

[0069] If any of the indicators exceeds the tolerance, the industrial control analysis unit will issue an alarm signal and clearly indicate the item that exceeds the tolerance, guiding the operator to perform targeted manual re-inspection. This step-by-step evaluation method significantly improves the accuracy of the test results and the convenience of fault location.

[0070] In Example 3, the above structure enables the detection of the tool holder hole 31 and the analysis and comparison after detection. After the tool holder 3 is installed, the detection mechanism 46 needs to make a pre-judgment before detection. Through the pre-judgment, the position of the detection mechanism 46 is adjusted by the electric telescopic component 41, the horizontal adjustment component 42, and the vertical adjustment component 44 so that the position of the detection mechanism 46 is opposite to the tool holder hole 31.

[0071] This pre-detection is implemented using a visual detector 43. The specific structure and installation of the visual detector 43 are as follows: See Figure 6 A vision detector 43 is also installed at the bottom of the mounting base 45, and the vision detector 43 is located below the detection mechanism 46. The vision detector 43 is used to collect position image information of the tool holder hole 31, and provides position reference for the horizontal movement, vertical movement and horizontal feed movement of the detection mechanism 46.

[0072] In this embodiment, the visual detector 43 is an industrial camera, and the optical axis of the industrial camera is parallel to the extension direction of the electric telescopic component 41 (i.e., parallel to the axial direction of the tool holder hole 31). The industrial camera is electrically connected to the industrial control analysis unit. The industrial control analysis unit processes and analyzes the images acquired by the industrial camera, identifies the position of the tool holder hole 31 in the image, and then controls the horizontal adjustment component 42 and the vertical adjustment component 44 to drive the detection mechanism 46 to move to a position opposite to the tool holder hole 31.

[0073] The vertical distance between the vision detector 43 and the detection mechanism 46 is a preset fixed value. This preset fixed value is determined during equipment assembly and stored in the industrial control analysis unit. Based on this preset fixed value and the image information collected by the vision detector 43, the industrial control analysis unit controls the vertical adjustment component 44 to drive the detection mechanism 46 to move to a position opposite to the tool holder hole 31.

[0074] In addition to indicating the position of the detection mechanism 46, the vision detector 43 can also serve as a pre-inspection tool during the installation of the tool holder 3. After the tool holder 3 is installed, the industrial control analysis unit controls the horizontal adjustment component 42 and the vertical adjustment component 44 of the two sets of test components 4 to move the two sets of vision detectors 43 to preset calibration positions that are completely symmetrical about the rotation axis of the drive mounting frame 2. The two sets of vision detectors 43 respectively capture images of the tool holder holes 31 on both sides of the tool holder 3. The industrial control analysis unit compares the imaging position and shape of the tool holder holes 31 in the two images. If the image features of the holes on both sides are basically consistent, the tool holder 3 is determined to be installed correctly. At this time, the industrial control analysis unit automatically fits and determines the spatial axis of the drive output shaft of the drive mounting frame 2 as the rotation reference axis for subsequent inspection. If the deviation of the comparison result is too large, an alarm is issued, prompting the operator to adjust the clamping of the tool holder 3 until it is installed correctly.

[0075] The specific work process is as follows: First, the tool holder 3 is mounted on the drive mounting bracket 2. The industrial control analysis unit controls the drive mounting bracket 2 to rotate so that the tool holder holes 31 on both sides of the tool holder 3 are roughly facing the two sets of test components 4.

[0076] The industrial control analysis unit controls the horizontal adjustment component 42 and the vertical adjustment component 44 of the two sets of test components 4 to move the two sets of vision detectors 43 to the preset calibration position symmetrical about the rotation axis of the drive mounting frame 2 in the equipment coordinate system.

[0077] Two sets of vision detectors 43 simultaneously capture images and transmit them back to the industrial control analysis unit. The industrial control analysis unit performs real-time comparison and analysis of the two images to determine whether the positions of the tool holder holes 31 on both sides are symmetrical and consistent. If they are consistent, the screen displays "Installation correct, reference established" and automatically fits the drive output shaft of the drive mounting bracket 2 as the rotation reference axis; if they are inconsistent, an alarm is issued, and the operator adjusts the clamping posture of the tool holder 3 according to the prompts until the installation is correct.

[0078] After the baseline is established, the industrial control analysis unit switches to the hole alignment mode. For either side, the vision detector 43 acquires a position image of the tool holder hole 31. The industrial control analysis unit identifies the hole position and controls the horizontal adjustment component 42 and the vertical adjustment component 44 to drive the detection mechanism 46 to move, so that the vision detector 43 is aligned with the tool holder hole 31. Subsequently, the industrial control analysis unit uses its stored preset vertical distance between the vision detector 43 and the detection mechanism 46 to control the vertical adjustment component 44 to move down again, so that the mounting rod 462 of the detection mechanism 46 is aligned with the tool holder hole 31.

[0079] The industrial control analysis unit activates the electric telescopic component 41 to horizontally insert the mounting rod 462 and the laser detector 463 into the tool holder hole 31. As the laser detector 463 sequentially reaches the first detection area 311 and the second detection area 312, the rotation adjustment component 461 drives the laser detector 463 to rotate at least one revolution, completing the data acquisition of the inner wall contour point cloud. Based on this, the industrial control analysis unit uses the least squares method to fit the center of the cross-section of the two detection areas, and constructs the spatial hole axis of the tool holder hole 31 on that side using the center of the first and second cross-sections. The two sets of test components 4 work synchronously, and the industrial control analysis unit ultimately obtains the first and second spatial hole axes.

[0080] The industrial control analysis unit performs step-by-step evaluation: Step 1 (Individual Assessment): Calculate the first parallelism value of the first spatial hole axis relative to the rotation reference axis, and the second parallelism value of the second spatial hole axis relative to the rotation reference axis. Determine whether both are within the preset parallelism error.

[0081] Step 2 (Mutual Evaluation): Calculate the mutual deviation value (such as spatial angle) between the axis of the first spatial hole and the axis of the second spatial hole. Determine whether the mutual deviation value is within the preset uniformity error.

[0082] Step 3 (Comprehensive Judgment): When all indicators are qualified, the parallelism of the tool holder hole 31 of the tool holder 3 is judged to be qualified. Otherwise, the industrial control analysis unit will immediately issue an alarm and clearly indicate which indicator (parallelism of the left hole, parallelism of the right hole, or mutual uniformity) is out of tolerance through the human-machine interface, providing guidance for the operator's inspection and correction.

[0083] After the inspection of a set of symmetrical tool holder holes 31 is completed, the electric telescopic component 41 drives the inspection mechanism 46 to exit the tool holder hole 31. The industrial control analysis unit controls the drive mounting frame 2 to drive the tool holder 3 to rotate sequentially according to the preset circumferential angle parameters between the hole groups, so that each set of symmetrical holes reaches the inspection station one by one. At each station, the above-mentioned visual hole alignment, internal hole scanning, axis construction, and step-by-step evaluation steps are repeated. After all the hole groups have been inspected, all the results are summarized. Only when the parallelism error and mutual deviation value of all hole groups are qualified are the overall parallelism of the tool holder 3 determined to be qualified.

[0084] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A testing device for testing the parallelism uniformity of tool holder holes, characterized in that: It includes a workbench (1), a drive mounting bracket (2), two sets of test components (4) symmetrically arranged on both sides of the tool holder (3), and an industrial control analysis unit electrically connected to the drive mounting bracket (2) and the test components (4); The side wall of the tool holder (3) is provided with a plurality of tool holder holes (31), and the two sets of test components (4) are used to test the two sets of tool holder holes (31) that are symmetrically arranged respectively; Each test assembly (4) includes a visual detector (43) and a detection mechanism (46) for inserting into the corresponding tool holder hole (31) to collect contour point clouds. The industrial control analysis unit is used to control the two sets of vision detectors (43) to move to the calibration position symmetrical about the rotation axis of the drive mounting bracket (2), acquire and compare the images of the two tool holder holes (31), and when the comparison is consistent, fit the rotation axis of the drive mounting bracket (2) and determine it as the rotation reference axis. The industrial control analysis unit is also used to construct the first spatial hole axis and the second spatial hole axis of the tool holder hole (31) on both sides respectively based on the point cloud collected by the two sets of detection mechanisms (46), calculate the parallelism error between the first spatial hole axis and the second spatial hole axis and the rotation reference axis, generate the first parallelism value and the second parallelism value, and calculate the mutual deviation value between the first spatial hole axis and the second spatial hole axis.

2. The testing device for testing the parallelism uniformity of tool holder holes according to claim 1, characterized in that: The industrial control analysis unit is also used to execute evaluation logic, specifically: First judgment logic: If either the first parallelism value or the second parallelism value exceeds the preset parallelism error, it is determined that the tool holder hole (31) on the corresponding side is not qualified. The industrial control analysis unit issues an alarm signal to guide the operator to perform manual re-inspection. Second judgment logic: After the first judgment logic is completed, if the mutual deviation value exceeds the preset uniformity error, the uniformity of the tool holder holes (31) on both sides is determined to be unqualified, and the industrial control analysis unit issues an alarm signal to guide the operator to perform manual re-inspection. The third evaluation logic: combining the results of the first evaluation logic and the second evaluation logic, when the first parallelism value, the second parallelism value and the mutual deviation value are all less than their respective preset thresholds, the parallelism of the two tool holder holes (31) is deemed to be qualified.

3. The testing device for testing the parallelism uniformity of tool holder holes according to claim 1, characterized in that: The workbench (1) is provided with a mounting platform (11) on top, and the drive mounting bracket (2) is mounted on the top of the mounting platform (11); the tool holder (3) is mounted on the drive mounting bracket (2), and the drive mounting bracket (2) is used to drive the tool holder (3) to rotate and adjust its position.

4. The testing device for testing the parallelism uniformity of tool holder holes according to claim 1, characterized in that: The test assembly (4) also includes an electric telescopic component (41), a horizontal adjustment component (42), a vertical adjustment component (44), and a mounting base (45); the telescopic direction of the electric telescopic component (41) is parallel to the axial direction of the tool holder hole (31); the horizontal adjustment component (42) is slidably connected to the telescopic part of the electric telescopic component (41), and the horizontal adjustment component (42) is used to adjust the position in the horizontal direction.

5. The testing device for testing the parallelism uniformity of tool holder holes according to claim 4, characterized in that: The vertical adjustment member (44) is slidably connected to the horizontal adjustment member (42), and the vertical adjustment member (44) is used to adjust the position in the vertical direction; the mounting base (45) is disposed on the vertical adjustment member (44), and the detection mechanism (46) and the visual detector (43) are both mounted on the mounting base (45).

6. The testing device for testing the parallelism uniformity of tool holder holes according to claim 5, characterized in that: The visual detector (43) is located below the detection mechanism (46), and the vertical distance between the visual detector (43) and the detection mechanism (46) is a preset fixed value. The industrial control analysis unit is used to first control the visual detector (43) to align with the tool holder hole (31) during the hole alignment process of the detection mechanism (46), and then control the vertical adjustment component (44) to move according to the preset fixed value so that the detection mechanism (46) and the tool holder hole (31) are aligned.

7. The testing device for testing the parallelism uniformity of tool holder holes according to claim 6, characterized in that: The detection mechanism (46) includes a rotary adjustment component (461), a mounting rod (462), and a laser detector (463); the output end of the rotary adjustment component (461) is connected to the mounting rod (462), and the rotary adjustment component (461) is used to drive the mounting rod (462) to rotate around its own axis.

8. The testing device for testing the parallelism uniformity of tool holder holes according to claim 7, characterized in that: The insertion end of the mounting rod (462) has a tapered guide portion, and a mounting groove is provided on one side of the mounting rod (462). The laser detector (463) is embedded in the mounting groove. The detection optical axis of the laser detector (463) is perpendicular to the axis of the mounting rod (462). The laser detector (463) is used to collect radial distance information of the inner wall of the tool holder hole (31) during rotation to generate a contour point cloud.

9. The testing device for testing the parallelism uniformity of tool holder holes according to claim 1, characterized in that: The tool holder hole (31) is provided with a first detection area (311) and a second detection area (312) spaced apart along its axial direction; the industrial control analysis unit controls the detection mechanism (46) to rotate at least one revolution in the first detection area (311) and the second detection area (312) to collect the whole circle contour point cloud, and fits the cross-sectional center of each detection area by the least squares method.

10. The testing device for testing the parallelism uniformity of tool holder holes according to claim 9, characterized in that: The first spatial hole axis and the second spatial hole axis are respectively constructed by connecting the center of the cross section of the first detection area (311) and the center of the cross section of the second detection area (312) corresponding to the two tool holder holes (31).

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