A sorting apparatus for brazing saw blades and a detection method thereof

Abstract

The application discloses a kind of sorting equipment of brazing saw blade and its detection method, sorting equipment includes: rack and conveying mechanism;Jacking rotary mechanism is used to jacking so that saw blade is separated from conveying mechanism, and brazing saw blade is rotated around its axis by rotary drive part;Elastic follow-up pressing mechanism is set above jacking rotary mechanism, including rotary pressing head, elastic element and rolling friction-reducing element;Rotary pressing head is floatingly installed by elastic element, and under the pre-tightening force of elastic element, with the upper surface of brazing saw blade after jacking, elastic contact is kept;Rotary pressing head inside or connecting position is equipped with rolling friction-reducing element;Jump detection component includes at least one displacement sensor, and the measuring head of displacement sensor is aligned with the tool bit working outer circle or / and tool bit working end surface of brazing saw blade.The present application solves the problems that existing detection technology is poor in pertinence, measurement stability and authenticity are insufficient, efficiency is low and difficult to integrate into automatic production line.

Description

Technical Field

[0001] This invention relates to the field of diamond tool processing inspection and automated sorting technology, and particularly to a sorting device and inspection method for brazed saw blades. It is especially suitable for online automatic detection and sorting of end face runout and radial runout of brazed diamond saw blades. Background Technology

[0002] Brazed saw blades, especially brazed diamond saw blades, are high-performance cutting tools formed by welding diamond or other superhard material cutting tips in a discrete manner to the outer edge of a substrate using a brazing process. They exhibit high bonding strength between the cutting tip and the substrate, and a large cutting edge, making them widely used for the precision machining of hard and brittle materials such as stone, ceramics, and glass.

[0003] Unlike ordinary one-piece or sintered circular saw blades, brazed saw blades have the following essential structural characteristics: 1) The cutter head has discrete saw teeth, rather than a continuous ring; 2) The scattered distribution of ultra-hard materials such as diamond on the welding area of ​​the saw blade can easily lead to slight warping of the working area plane and uneven local stiffness; 3) The outer circle and end face of the working area at the top of the cutter head are the parts that directly contact the material being processed during the cutting process, and their contour accuracy and reliability directly determine the cutting quality.

[0004] Under high-speed rotation conditions, brazed saw blades have extremely high requirements for geometric accuracy and operational stability. Significant end-face runout or radial runout can cause vibration, misalignment, workpiece chipping, and abnormal blade wear, and in severe cases, even lead to tooth breakage or saw blade shattering. Therefore, the runout index of the saw blades must be accurately tested before leaving the factory, and the blades must be sorted into qualified and unqualified types based on the results.

[0005] Currently, most methods in the industry for detecting saw blade runout follow the traditional approach used for ordinary circular saw blades: manually clamping the saw blade in a simple rotating fixture and using contact probes such as dial indicators for single-item testing, or using offline testing equipment to measure each blade individually. However, in practical applications, these methods still have the following shortcomings:

[0006] 1. Insufficient adaptability to the test objects. Existing testing solutions did not consider the unique characteristics of brazed saw blades, such as "discrete cutter heads, sensitive welding areas, and uneven local stiffness," during initial design. Traditional rigid clamping or simple support methods, when driving the saw blade to rotate for testing, apply additional, non-constant axial loads and frictional damping to the saw blade due to periodic height changes caused by discrete cutter heads, differences in stiffness in the welding area, or inherent slight warping in the working area. This interference load is directly coupled into the runout measurement value, resulting in drastic fluctuations and poor repeatability in the test data, failing to accurately reflect the runout accuracy of the saw blade under free rotation or actual working conditions. More seriously, unstable rotational damping may also adversely affect the fragile brazed area, damaging the product.

[0007] 2. Secondly, the testing efficiency and automation level are low. Most equipment can only perform single-item testing of end face or radial runout. Testing both indicators requires secondary clamping or probe adjustment, which cannot match the cycle time of continuous production lines. Clamping and positioning rely on manual labor, resulting in poor consistency and low reliability of test results.

[0008] 3. Finally, an automated closed loop cannot be formed. There is a lack of reliable data binding and signal linkage mechanisms between the detection results and subsequent sorting execution, making it difficult to achieve automated closed-loop control of "detection-judgment-sorting".

[0009] In summary, there is an urgent need for a sorting device that can adapt to the special structure of brazed saw blades and objectively and accurately reflect the end face runout and radial runout (especially for the outer circle of the cutter head). More preferably, it should be a fully automatic sorting device and method that can seamlessly connect to the production line and output sorting control signals. Summary of the Invention

[0010] In order to overcome the shortcomings of the prior art, the present invention aims to provide a sorting device and sorting and inspection method for brazed saw blades, which aims to solve the problems of poor targeting of brazed saw blades, insufficient measurement stability and accuracy, low efficiency and difficulty in integrating into automated production lines in the existing inspection technology.

[0011] One of the objectives of this invention is achieved through the following technical solution:

[0012] A sorting device for brazed saw blades, comprising:

[0013] A frame, and a conveying mechanism mounted on the frame, for carrying and conveying the brazed saw blade to be inspected;

[0014] The lifting and rotating mechanism is located below the conveying mechanism. It is used to lift the brazed saw blade on the conveying mechanism upward so that it is separated from the conveying mechanism, and drive the brazed saw blade to rotate around its axis through the rotating drive unit.

[0015] An elastic follow-up clamping mechanism is disposed above the lifting and rotating mechanism, and includes a rotating clamping head, an elastic element, and a rolling friction damping component. The rotating clamping head is floatingly mounted on a detection bracket via the elastic element, and under the preload of the elastic element, it maintains elastic contact with the upper surface of the lifted brazed saw blade, thereby providing axial flexible clamping force. The rolling friction damping component is provided inside or at the connection point of the rotating clamping head, so that the rotating clamping head can follow the rotation of the brazed saw blade with low damping.

[0016] The runout detection assembly includes at least one displacement sensor mounted on a detection bracket on one side of the frame. The probe of the displacement sensor is aligned with the working outer circle of the brazed saw blade tip and / or the working end face of the blade tip, rather than the outer circle of the substrate tip and / or the end face of the substrate.

[0017] Furthermore, the elastic follow-up clamping mechanism also includes a clamping drive component, which is mounted on the detection bracket. The output end of the clamping drive component is coaxially arranged with the rotary clamping head. The elastic element is a spring, which is sleeved between the clamping drive component and the rotary clamping head, so that the rotary clamping head forms elastic compensation during the clamping process. The rolling friction reducing component is arranged between the rotary clamping head and the clamping drive component.

[0018] Furthermore, the rolling friction damping component on the output end of the clamping drive is selected from ball bearings or thrust bearings and is arranged between the rotating clamping head and the clamping drive to reduce friction damping and resistance fluctuation interference when the brazed saw blade rotates.

[0019] Furthermore, the displacement sensor includes a first sensor and a second sensor. The first sensor is a horizontally or radially arranged contact displacement probe or laser displacement sensor, used to measure the radial displacement change of the working outer circle of the brazed saw blade tip and calculate the radial runout value. The second sensor is a vertically arranged contact displacement probe or laser displacement sensor, used to measure the axial displacement change of the working plane of the brazed saw blade tip and calculate the end face runout value.

[0020] Furthermore, the displacement sensor is mounted on the detection bracket via a detection head feed assembly. The detection head feed assembly includes a mounting bracket for fixing the displacement sensor, a vertical feed drive for driving the mounting bracket to move up and down in the vertical direction, a connecting bracket for mounting the vertical feed drive, and a horizontal feed drive for synchronously driving the connecting bracket and the vertical feed drive to move linearly in the horizontal direction.

[0021] The horizontal feed drive is fixedly mounted on the detection bracket via a mounting base. The power output end of the horizontal feed drive is drivenly connected to the connecting frame. The vertical feed drive is fixedly mounted on the connecting frame. The power output end of the vertical feed drive is drivenly connected to the mounting frame. The displacement sensor is mounted on the mounting frame. The mounting frame is slidably connected to the connecting frame via a vertical guide seat. The connecting frame is slidably connected to the mounting base via a horizontal guide seat.

[0022] Furthermore, the conveying mechanism includes a conveying motor, a transmission assembly, a drive shaft, and a conveyor belt. The conveying motor drives the drive shaft to rotate through the transmission assembly, and the drive shaft drives the conveyor belt to run in a cycle. The conveyor belt is used to carry the brazed saw blade and convey it along the length of the frame.

[0023] Furthermore, the rotary drive unit includes a housing and a rotary spindle, the rotary spindle being pivotally connected within the housing; the lifting and rotating mechanism further includes a support and clamping member for supporting and holding the brazed saw blade, a lifting assembly for adjusting the horizontal lifting height of the housing, and a rotary transmission assembly for driving the rotary spindle to rotate, the rotary transmission assembly including a rotary motor and a pulley assembly;

[0024] The supporting clamp is mounted on the power output shaft of the rotating spindle and is driven to rotate synchronously by a rotary motor and a pulley assembly. The lifting assembly drives the rotating spindle and the supporting clamp to rise and fall as a whole through the connecting guide. When rising, the brazed saw blade is lifted from the conveyor belt and enters the inspection station. When falling, the brazed saw blade is returned to the conveyor belt to continue conveying.

[0025] Furthermore, the sorting equipment also includes a control system, an arrival detection sensor located upstream of the conveying mechanism, and a sorting execution mechanism located downstream of the conveying mechanism;

[0026] The positioning detection sensor is used to detect whether the saw blade has reached the runout detection station and sends the positioning signal to the control system to trigger the runout detection station to avoid erroneous operation of the empty station.

[0027] The control system controls the timing of the lifting and rotating mechanism and the elastic follow-up clamping mechanism, and collects the signals from the runout detection component and calculates the runout value; it outputs the sorting result according to the judgment threshold, and can bind and record the detection result with the brazed saw blade serial number / station number to provide a basis for subsequent sorting execution;

[0028] The sorting actuator is selected from one of the following: push rod fork, flip plate diversion, or dual-channel slide. The control system drives the sorting actuator to guide the brazed saw blade into the qualified channel or the unqualified channel according to the sorting signal.

[0029] The second objective of this invention is achieved through the following technical solution: a method for sorting and detecting the runout of brazed saw blades, using the sorting equipment described above, specifically including the following steps:

[0030] (1) Delivery to position: The conveyor mechanism drives the conveyor belt to run, and the brazed saw blade enters the vibration detection station area along with the conveyor belt;

[0031] (2) Lifting and positioning: Drive the lifting and rotating mechanism to rise the rotating drive unit, lift the brazed saw blade on the conveying mechanism upward so that it is separated from the conveyor belt, and complete the center positioning and support of the brazed saw blade;

[0032] (3) Elastic clamping: Drive the elastic follow-up clamping mechanism to press down, and the rotating clamping head applies elastic clamping force to the central area of ​​the brazed saw blade through the elastic element; the rolling friction reducing component makes the rotating clamping head follow the brazed saw blade with low friction during rotation, thereby reducing the fluctuation of rotational resistance while stabilizing the clamping and improving the measurement stability.

[0033] (4) Probe positioning: Adjust the horizontal and vertical feed positions of the runout detection component so that the displacement sensor is close to the working outer circle of the saw blade and / or the working end face of the saw blade, and enter the set measurement distance;

[0034] (5) Rotation acquisition: The rotation drive unit of the lifting and rotating mechanism rotates, thereby driving the brazed saw blade to rotate at a set speed; and synchronously acquires the displacement data sequence of each displacement sensor within at least one rotation.

[0035] (6) Runout calculation: Calculate the radial runout value and the end face runout value. Take the maximum and minimum displacement data of the displacement sensor aligned with the working outer circle of the brazed saw blade within one revolution, and take the difference as the radial runout value; take the maximum and minimum displacement data of the displacement sensor aligned with the working end face of the brazed saw blade within one revolution, and take the difference as the end face runout value.

[0036] (7) Judgment and sorting output: The end face runout value and radial runout value are compared with the preset threshold respectively to obtain the qualified / unqualified or grade judgment result; and the sorting result is bound and stored with the serial number / station information of the current brazed saw blade; when the brazed saw blade enters the downstream sorting station, the corresponding sorting control signal is output to drive the sorting execution mechanism to complete the diversion and sorting.

[0037] Furthermore, in step (6), when the outer circle of the brazed saw blade to be tested is a discontinuous outer circle structure with discrete saw teeth, the radial displacement data collected during the rotation detection process is segmented for identification and processing: First, the sampled data is segmented by angle or time based on the rotation speed and number of saw teeth of the brazed saw blade, and the effective measurement data in each revolution or each cycle is extracted; then, the high-frequency saw tooth fluctuation component is weakened by filtering or envelope processing, and the low-frequency displacement trend reflecting the overall rotational eccentricity and outer circle consistency of the saw blade is retained; on this basis, the difference between the maximum and minimum values ​​of the processed displacement curve is taken as the radial runout value of the saw blade.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] 1. Significantly Improved Authenticity and Stability of Testing: By introducing an elastic follow-up clamping mechanism, utilizing elastic elements to provide flexible compensation, and combining it with a rolling friction-reducing structure, the axial clamping force during the testing process remains constant and gentle, with minimal and stable rotational damping. This effectively avoids additional interference loads and friction fluctuations introduced by the discrete cutter head of the brazed saw blade, uneven stiffness in the welding area, or warping of the substrate, thus obtaining more authentic, stable, and repeatable runout test data, while avoiding damage to the brazed area.

[0040] 2. Comprehensive and realistic testing dimensions: Simultaneous detection of end-face runout in the brazing work area and radial runout of the outer diameter of the brazing workpiece is achieved at the same workstation, eliminating the need for repeated clamping or probe adjustment. In particular, the radial runout detection of the tool tip's outer diameter directly reflects the tool's working accuracy and reliability, offering more practical guidance than traditional methods of detecting the outer diameter of the substrate.

[0041] 3. The inspection process is highly automated and seamlessly integrated with the production line: The lifting and rotating mechanism allows the brazed saw blade to be inspected independently of the conveyor line, eliminating interference from factors such as conveyor belt elasticity and uneven friction. Simultaneously, it achieves a closed-loop process of automatic feeding, automatic positioning, automatic inspection, automatic judgment, and automatic sorting, with a fast cycle time, perfectly matching continuous production lines and significantly improving inspection efficiency.

[0042] 4. Reliable data and easy traceability: The control system accurately binds the detection results of each saw blade with the sorting action, providing a reliable foundation for product quality traceability and data analysis. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a sorting device for brazed saw blades according to a preferred embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the conveying mechanism in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the lifting and rotating mechanism, the elastic follow-up pressing mechanism, and the runout detection component in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention.

[0046] Figure 4 This is an enlarged schematic diagram of the elastic follow-up clamping mechanism in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention;

[0047] Figure 5 This is an enlarged schematic diagram of the elastic follow-up clamping mechanism and the runout detection component in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention;

[0048] Figure 6This is a schematic diagram of the lifting and rotating mechanism in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram of the lifting and rotating mechanism in the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention from another angle.

[0050] Figure 8 This is a schematic diagram of the vibration test state of the sorting equipment for brazed saw blades according to a preferred embodiment of the present invention.

[0051] In the picture:

[0052] 100. Sorting equipment for brazed saw blades;

[0053] 1. Frame; 11. Testing bracket;

[0054] 2. Conveying mechanism; 21. Conveyor motor; 22. Transmission assembly; 23. Drive shaft; 24. Conveyor belt;

[0055] 3. Lifting and rotating mechanism; 31. Rotary drive unit; 311. Housing; 312. Rotary spindle; 32. Supporting and clamping component; 33. Lifting assembly; 34. Connecting guide component; 35. Rotary transmission assembly; 351. Rotary motor; 352. Pulley assembly;

[0056] 4. Elastic follow-up clamping mechanism; 41. Rotary clamping head; 42. Elastic element; 43. Rolling friction reducing component; 44. Clamping drive component;

[0057] 5. Jump detection component; 51. First sensor; 52. Second sensor;

[0058] 6. Detection head feed assembly; 61. Mounting bracket; 62. Vertical feed drive; 63. Connecting bracket; 64. Horizontal feed drive; 65. Mounting base; 66. Vertical guide seat; 67. Horizontal guide seat;

[0059] 7. Control system;

[0060] 8. Position detection sensor;

[0061] A. Brazed saw blade; A1. Working outer diameter of the saw head; A2. Working end face of the saw head. Detailed Implementation

[0062] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0063] Example 1

[0064] The present invention provides a sorting device 100 for brazed saw blades, such as... Figure 1-8 As shown, it includes:

[0065] The frame 1 and the conveying mechanism 2 mounted on the frame 1 are used to carry and convey the brazed saw blade A to be tested;

[0066] In some embodiments, the sorting equipment 100 is provided with at least one detection station located in the area between the conveyor belts of the conveying mechanism 2, which is used to detect the runout of the brazed saw blade and output the sorting judgment result.

[0067] Each testing station is mainly composed of a set of lifting and rotating mechanisms 3, elastic follow-up clamping mechanisms 4 and their runout detection components 5. The testing bracket 11 is fixedly installed above the frame 1 to provide the installation reference for the runout detection components and the elastic follow-up clamping mechanisms.

[0068] Specifically, the lifting and rotating mechanism 3 is located below the conveying mechanism 2 and is used to lift the brazed saw blade A on the conveying mechanism 2 upward so that it is separated from the conveying mechanism 2, and drive the brazed saw blade A to rotate around its axis through the rotating drive unit 31.

[0069] The elastic follow-up clamping mechanism 4 is disposed above the lifting and rotating mechanism 3, and includes a rotating clamping head 41, an elastic element 42, and a rolling friction damping component 43. The rotating clamping head 41 is floatingly mounted on a detection bracket 11 through the elastic element 42, and under the pre-tightening force of the elastic element 42, it maintains elastic contact with the upper surface of the lifted brazed saw blade A, thereby providing axial flexible clamping force. The rolling friction damping component 43 is provided inside or at the connection part of the rotating clamping head 41, so that the rotating clamping head 41 can follow the rotation of the brazed saw blade A with low damping.

[0070] The runout detection component 5 includes at least one displacement sensor, which is mounted on a detection bracket 11 on one side of the frame 1. The probe of the displacement sensor is aligned with the working outer circle A1 and / or the working end face A2 of the brazed saw blade A, rather than the outer circle and / or the end face of the substrate.

[0071] The control system 7 is used to control the timing of actions such as conveying, lifting, pressing, rotating, and probe advance and retreat, collect displacement signals and calculate runout values, and output sorting signals such as qualified / unqualified or graded judgment.

[0072] As a further preferred embodiment, the elastic follow-up clamping mechanism 4 further includes a clamping drive 44, which is mounted on the detection bracket 11. The output end of the clamping drive 44 is coaxially arranged with the rotary clamping head 41. The elastic element 42 is a spring, which is sleeved between the clamping drive 44 and the rotary clamping head 41, so that the rotary clamping head 41 forms elastic compensation during the clamping process. The rolling friction reducing element 43 is arranged between the rotary clamping head 41 and the clamping drive 44.

[0073] The spring design allows the rotary clamping head 41 to provide elastic compensation during the clamping process, accommodating thickness differences and minor vibrations in the brazed saw blade A, and preventing measurement instability caused by rigid clamping. The rolling friction damping component 43 on the output end of the clamping drive component 44 is selected from ball bearings or thrust bearings, which reduces frictional damping and resistance fluctuations during the rotation of the brazed saw blade A. The design of the rolling friction damping component 43 allows the rotary clamping head 41 to move with low friction during the rotational testing of the brazed saw blade A, reducing the interference of clamping friction damping on rotation and measurement, and improving the consistency of test data. The rotary clamping head 41 is used to press against the central area of ​​the brazed saw blade A to achieve axial clamping and stable support.

[0074] As a further preferred embodiment, the displacement sensor includes a first sensor 51, which is a horizontally or radially arranged contact displacement probe or laser displacement sensor, used to measure the radial displacement change of the working outer circle A1 of the brazed saw blade A and calculate the radial runout value; in order to simultaneously realize end face runout detection, in another preferred embodiment, a second sensor 52 can also be set on the mounting bracket 61, which is a vertically arranged contact displacement probe or laser displacement sensor, used to measure the axial displacement change of the working plane of the brazed saw blade A and calculate the end face runout value.

[0075] As a further preferred embodiment, the displacement sensor is mounted on the detection bracket 11 via the detection head feed assembly 6. The detection head feed assembly 6 includes a mounting bracket 61 for fixing the displacement sensor, a vertical feed drive 62 for driving the mounting bracket 61 to move up and down in the vertical direction, a connecting bracket 63 for mounting the vertical feed drive 62, and a horizontal feed drive 64 for synchronously driving the connecting bracket 63 and the vertical feed drive 62 to move linearly in the horizontal direction.

[0076] The horizontal feed drive 64 is fixedly mounted on the detection bracket 11 via the mounting base 65. The power output end of the horizontal feed drive 64 is connected to the connecting frame 63 via a transmission connection. The vertical feed drive 62 is fixedly mounted on the connecting frame 63. The power output end of the vertical feed drive 62 is connected to the mounting frame 61 via a transmission connection. The displacement sensor is mounted on the mounting frame 61. The mounting frame 61 is slidably connected to the connecting frame 63 via a vertical guide seat 66. The connecting frame 63 is slidably connected to the mounting base 65 via a horizontal guide seat 67.

[0077] In some embodiments, the vertical guide seat 66 and the horizontal guide seat 67 are preferably double guide rods or linear guide rail structures to ensure the straightness and repeatability of the feeding process. The vertical feed drive 62 is preferably a cylinder or electric cylinder to drive the mounting bracket 61 to move up and down, realizing the contact measurement / lifting and resetting of the displacement sensor. The horizontal feed drive 64 is preferably a cylinder or electric cylinder, the output end of which is connected to the connecting bracket 63 to drive the connecting bracket 63 to move horizontally linearly along the horizontal guide seat 67, realizing the approach / retraction of the probe.

[0078] In some embodiments, the conveying mechanism 2 includes a conveying motor 21, a transmission assembly 22, a drive shaft 23, and a conveyor belt 24. The conveying motor 21 drives the drive shaft 23 to rotate via the transmission assembly 22. The drive shaft 23 drives the conveyor belt 24 to circulate. The conveyor belt 24 carries the brazed saw blade A and conveys it along the length of the frame 1. In one embodiment, the conveyor belt 24 may be a synchronous belt, a chain plate, or a conveyor belt structure with workstation trays to ensure the stability of the brazed saw blade A's posture and the consistency of its spacing during the conveying process.

[0079] Further, the rotary drive unit 31 includes a housing 311 and a rotary spindle 312, the rotary spindle 312 being pivotally connected within the housing 311; the lifting and rotating mechanism 3 further includes a support and clamping member 32 for supporting and holding the brazed saw blade A, a lifting assembly 33 for adjusting the horizontal lifting height of the housing 311, and a rotary transmission assembly 35 for driving the rotary spindle 312 to rotate, the rotary transmission assembly 35 including a rotary motor 351 and a pulley assembly 352; in this embodiment, the support and clamping member 32 is located above the conveyor belt 24, for supporting the brazed saw blade A and driving the brazed saw blade A to rotate during inspection; in one embodiment, the support and clamping member 32 may be provided with a positioning boss / positioning mandrel structure for engaging with the center hole of the brazed saw blade A to improve the reliability of concentric positioning.

[0080] The supporting clamping member 32 is mounted on the power output shaft of the rotating spindle 312 and is driven to rotate synchronously by the rotating motor 351 and the pulley assembly 352. The lifting assembly 33 drives the rotating spindle 312 and the supporting clamping member 32 to rise and fall as a whole through the connecting guide member 34. When rising, it lifts the brazed saw blade A from the conveyor belt 24 and enters the inspection station. When falling, it causes the brazed saw blade A to fall back to the conveyor belt 24 to continue conveying.

[0081] As a further preferred option, the sorting equipment also includes a position detection sensor 8 located upstream of the conveying mechanism 2, specifically installed at the end of the conveying mechanism 1 or near the detection position. The position detection sensor 8 is preferably a photoelectric sensor or a proximity switch, used to detect whether the brazed saw blade A has reached the detection position / whether there is material, and to send the position signal to the control system 7 to trigger the action of the detection position and avoid erroneous action of the empty position.

[0082] In this invention, the control system 7 preferably includes a PLC / industrial computer, a drive module, and a data acquisition module, used to control the timing of the actions of the conveyor motor 21, the lifting assembly 33, the rotary motor 351, the clamping drive 44, the vertical feed drive 62, and the horizontal feed drive 64; to collect signals from each displacement sensor and calculate the runout value; to output the sorting result according to the judgment threshold, and to bind and record the detection result with the saw blade serial number / station number, providing a basis for subsequent sorting execution.

[0083] As a further preferred embodiment, the sorting equipment also includes a sorting execution mechanism (not shown in the figure) located downstream of the conveying mechanism 2; the sorting execution mechanism is selected from one of push rod fork, flip plate diversion or dual-channel slide, and the control system 7 drives the sorting execution mechanism to guide the brazed saw blade A into the qualified channel or the unqualified channel according to the sorting signal.

[0084] Specifically, after acquiring the end face runout and radial runout detection data of the brazed saw blade A, the control system 7 automatically analyzes and judges the detection results according to preset judgment thresholds or grading rules, and binds and stores the judgment results with the corresponding cycle number, station number, or carrying position of the brazed saw blade A during the conveying process. Subsequently, when the brazed saw blade A runs with the conveying mechanism 2 to the downstream sorting station, the control system 7 outputs corresponding control signals according to the binding information, driving the sorting execution mechanism to act, so that the saw blade enters the corresponding qualified product channel, unqualified product channel, or different grade channel according to the judgment result.

[0085] Through the coordination of the above structure and process, the detection results can be accurately and reliably converted into sorting actions, avoiding manual intervention and missorting or omissions. This achieves closed-loop control from online detection to automatic sorting, enabling the overall device of this invention to not only have detection functions, but also the automatic judgment and sorting capabilities required for actual production line applications.

[0086] Example 2

[0087] A method for sorting and detecting the runout of brazed saw blade A, using the sorting equipment 100 of Example 1 for sorting, see Appendix for details. Figure 1-8 In a typical detection cycle, this embodiment completes continuous detection and sorting determination according to the following steps:

[0088] (1) Delivery to position: The conveying mechanism 2 drives the conveyor belt 24 to run, and the brazed saw blade A enters the jump detection station area with the conveyor belt 24; after the position detection sensor 8 detects that the saw blade is in position, the control system 7 controls the conveyor belt 24 to stop or enter the maintenance cycle.

[0089] (2) Lifting and positioning: The control system 7 drives the lifting and rotating mechanism 3 to move, causing the rotating drive part 31 to rise, lifting the brazed saw blade A on the conveying mechanism 2 upward so that it is separated from the conveyor belt 24, thereby eliminating the influence of the friction of the conveyor belt 24 on the rotation detection, and at the same time completing the center positioning and support of the brazed saw blade A.

[0090] (3) Elastic clamping: The control system 7 drives the elastic follow-up clamping mechanism 4 to press down, and the rotating clamping head 41 applies elastic clamping force to the central area of ​​the brazed saw blade A through the elastic element 42; the rolling friction reducing component 43 makes the rotating clamping head 41 follow the brazed saw blade A with low friction during rotation, thereby reducing the fluctuation of rotational resistance while stabilizing the clamping and improving the measurement stability.

[0091] (4) Probe positioning: The control system 7 adjusts the horizontal and vertical feed positions of the runout detection component 5 so that the first sensor contacts the outer circle measuring point of the working surface of the brazed saw blade A (or enters the set measurement distance) for radial runout acquisition. In the embodiment with a second sensor, the second sensor 52 simultaneously contacts the working end face of the brazed saw blade A (or enters the set measurement distance) for end face runout acquisition.

[0092] The second sensor 52 is preferably mounted on the detection bracket 11 and arranged through a sliding structure that is the same as or adjacent to the first sensor 51. Its measurement direction is along the saw blade axis and points to the end face of the saw blade working area. The second sensor 52 can share the detection head feed assembly 6 with the first sensor 51, and can achieve simultaneous or sequential detection of the end face and outer circle by different installation heights and installation directions.

[0093] (5) Rotation acquisition: The control system 7 drives the rotation drive unit 31 of the lifting and rotating mechanism 3 to rotate. The rotation drive unit 35 drives the rotation main shaft 312 and the support clamping part 32 of the rotation drive unit 31 to rotate, thereby driving the brazed saw blade A to rotate at the set speed. The control system 7 synchronously acquires the displacement data sequence of each displacement sensor within at least one rotation. If necessary, the acquired signal can be filtered to improve the noise resistance.

[0094] (6) Runout calculation: Calculate the radial runout value and the end face runout value. Take the maximum and minimum displacement data of the displacement sensor of the working outer circle A1 of the brazed saw blade A within one revolution, and take the difference as the radial runout value; take the maximum and minimum displacement data of the displacement sensor of the working end face A2 of the brazed saw blade A within one revolution, and take the difference as the end face runout value.

[0095] (7) Judgment and sorting output: The control system 7 compares the end face runout value and the radial runout value with the preset threshold respectively to obtain the qualified / unqualified or grade judgment result; and binds and stores the sorting result with the serial number / station information of the current brazed saw blade; when the brazed saw blade enters the downstream sorting station, it outputs the corresponding sorting control signal to drive the sorting execution mechanism to complete the diversion and sorting.

[0096] (8) Reset and release: After the inspection is completed, the mounting bracket 61 of the inspection head feed assembly 6 rises, causing each displacement sensor to leave the saw blade, and the inspection head feed assembly 6 drives the mounting bracket 61 to retract; the elastic follow-up clamping mechanism 4 resets and rises to release the clamping; the lifting and rotating mechanism 3 descends, causing the saw blade to fall back to the conveyor belt 24, and the conveyor belt 24 resumes operation to transport the saw blade to the next station, realizing continuous inspection.

[0097] During the application of this equipment, especially when the outer circle of the saw blade to be tested is a discontinuous outer circle structure with discrete saw teeth or brazed cutter heads, the radial displacement signal collected by the first sensor 51 during the rotation detection process will exhibit periodic fluctuation characteristics. This includes both low-frequency components caused by the overall radial eccentricity of the saw blade and high-frequency pulse components generated by individual saw teeth or cutter heads passing through the measurement points in sequence.

[0098] As a further implementation method, in order to avoid misjudging the height difference of a single saw tooth or the local shape error of the cutter head as the overall radial runout, in step (6), when the outer circle of the brazed saw blade A to be tested is a discontinuous outer circle structure with discrete saw teeth, the radial displacement data collected during the rotation detection process is segmented for identification and processing: First, the sampled data is segmented by angle or time based on the rotation speed and the number of saw teeth of the brazed saw blade A, and the effective measurement data in each revolution or each cycle is extracted (specifically, in order to extract the effective data reflecting the overall runout, the control system 7 first calculates the tooth passing frequency according to the saw blade rotation speed and the number of saw teeth, and divides one revolution of rotation data into multiple equal angle intervals according to the number of saw teeth, and performs synchronous averaging processing on the data of each corresponding angle position, thereby weakening the local fluctuation influence caused by the height difference of a single saw tooth); then, the high frequency saw tooth fluctuation component is weakened by filtering or envelope processing, and the low frequency displacement trend reflecting the overall rotational eccentricity and outer circle consistency of the saw blade is retained; on this basis, the difference between the maximum and minimum values ​​of the processed displacement curve is taken as the radial runout value of the saw blade.

[0099] The above data processing method can accurately reflect the overall outer diameter runout of the brazed saw blade under working conditions without being affected by fluctuations in the height of individual saw teeth, thus making the test results more consistent with the actual use requirements of this type of product.

[0100] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A sorting device for brazed saw blades, characterized in that, include: A frame, and a conveying mechanism mounted on the frame, for carrying and conveying the brazed saw blade to be inspected; The lifting and rotating mechanism is located below the conveying mechanism. It is used to lift the brazed saw blade on the conveying mechanism upward so that it is separated from the conveying mechanism, and drive the brazed saw blade to rotate around its axis through the rotating drive unit. An elastic follow-up clamping mechanism is disposed above the lifting and rotating mechanism, and includes a rotating clamping head, an elastic element, and a rolling friction damping component. The rotating clamping head is floatingly mounted on a detection bracket via the elastic element, and under the preload of the elastic element, it maintains elastic contact with the upper surface of the lifted brazed saw blade, thereby providing axial flexible clamping force. The rolling friction damping component is provided inside or at the connection point of the rotating clamping head, so that the rotating clamping head can follow the rotation of the brazed saw blade with low damping. The runout detection assembly includes at least one displacement sensor mounted on a detection bracket on one side of the frame. The probe of the displacement sensor is aligned with the working outer circle of the brazed saw blade tip and / or the working end face of the blade tip, rather than the outer circle of the substrate tip and / or the end face of the substrate.

2. The sorting equipment for brazed saw blades as described in claim 1, characterized in that, The elastic follow-up clamping mechanism also includes a clamping drive component, which is mounted on the detection bracket. The output end of the clamping drive component is coaxially arranged with the rotary clamping head. The elastic element is a spring, which is sleeved between the clamping drive component and the rotary clamping head to provide elastic compensation during the clamping process. A rolling friction reducing component is arranged between the rotary clamping head and the clamping drive component.

3. The sorting equipment for brazed saw blades as described in claim 1, characterized in that, The rolling friction damping component on the output end of the clamping drive is selected from ball bearings or thrust bearings and is arranged between the rotating clamping head and the clamping drive to reduce friction damping and resistance fluctuation interference when the brazed saw blade rotates.

4. The sorting equipment for brazed saw blades as described in claim 1, characterized in that, The displacement sensor includes a first sensor and a second sensor. The first sensor is a horizontally or radially arranged contact displacement probe or laser displacement sensor, used to measure the radial displacement change of the working outer circle of the brazed saw blade head and calculate the radial runout value. The second sensor is a vertically arranged contact displacement probe or laser displacement sensor, used to measure the axial displacement change of the working plane of the brazed saw blade head and calculate the end face runout value.

5. The sorting equipment for brazed saw blades as described in claim 4, characterized in that, The displacement sensor is mounted on the detection bracket via a detection head feed assembly. The detection head feed assembly includes a mounting bracket for fixing the displacement sensor, a vertical feed drive for driving the mounting bracket to move up and down in the vertical direction, a connecting bracket for mounting the vertical feed drive, and a horizontal feed drive for synchronously driving the connecting bracket and the vertical feed drive to move linearly in the horizontal direction. The horizontal feed drive is fixedly mounted on the detection bracket via a mounting base. The power output end of the horizontal feed drive is drivenly connected to the connecting frame. The vertical feed drive is fixedly mounted on the connecting frame. The power output end of the vertical feed drive is drivenly connected to the mounting frame. The displacement sensor is mounted on the mounting frame. The mounting frame is slidably connected to the connecting frame via a vertical guide seat. The connecting frame is slidably connected to the mounting base via a horizontal guide seat.

6. The sorting equipment for brazed saw blades as described in any one of claims 1-5, characterized in that, The conveying mechanism includes a conveying motor, a transmission assembly, a drive shaft, and a conveyor belt. The conveying motor drives the drive shaft to rotate through the transmission assembly. The drive shaft drives the conveyor belt to run in a cycle. The conveyor belt is used to carry the brazed saw blade and convey it along the length of the frame.

7. The sorting equipment for brazed saw blades as described in any one of claims 1-5, characterized in that, The rotary drive unit includes a housing and a rotary spindle, the rotary spindle being pivotally connected within the housing; the lifting and rotating mechanism further includes a support and clamping member for supporting and holding the brazed saw blade, a lifting assembly for adjusting the horizontal lifting height of the housing, and a rotary transmission assembly for driving the rotary spindle to rotate, the rotary transmission assembly including a rotary motor and a pulley assembly; The supporting clamp is mounted on the power output shaft of the rotating spindle and is driven to rotate synchronously by a rotary motor and a pulley assembly. The lifting assembly drives the rotating spindle and the supporting clamp to rise and fall as a whole through the connecting guide. When rising, the brazed saw blade is lifted from the conveyor belt and enters the inspection station. When falling, the brazed saw blade is returned to the conveyor belt to continue conveying.

8. The sorting equipment for brazed saw blades as described in any one of claims 1-5, characterized in that, The sorting equipment also includes a control system, an arrival detection sensor located upstream of the conveyor mechanism, and a sorting execution mechanism located downstream of the conveyor mechanism; The positioning detection sensor is used to detect whether the saw blade has reached the runout detection station and sends the positioning signal to the control system to trigger the runout detection station to avoid erroneous operation of the empty station. The control system controls the timing of the lifting and rotating mechanism and the elastic follow-up clamping mechanism, and collects the signals from the runout detection component and calculates the runout value; it outputs the sorting result according to the judgment threshold, and can bind and record the detection result with the brazed saw blade serial number / station number to provide a basis for subsequent sorting execution; The sorting actuator is selected from one of the following: push rod fork, flip plate diversion, or dual-channel slide. The control system drives the sorting actuator to guide the brazed saw blade into the qualified channel or the unqualified channel according to the sorting signal.

9. A method for sorting and detecting runout of brazed saw blades, characterized in that, Sorting using the sorting equipment as described in any one of claims 1-8 specifically includes the following steps: (1) Delivery to position: The conveyor mechanism drives the conveyor belt to run, and the brazed saw blade enters the vibration detection station area along with the conveyor belt; (2) Lifting and positioning: Drive the lifting and rotating mechanism to rise the rotating drive unit, lift the brazed saw blade on the conveying mechanism upward so that it is separated from the conveyor belt, and complete the center positioning and support of the brazed saw blade; (3) Elastic clamping: Drive the elastic follow-up clamping mechanism to press down, and the rotating clamping head applies elastic clamping force to the central area of ​​the brazed saw blade through the elastic element; the rolling friction reducing component makes the rotating clamping head follow the brazed saw blade with low friction during rotation, thereby reducing the fluctuation of rotational resistance while stabilizing the clamping and improving the measurement stability. (4) Probe positioning: Adjust the horizontal and vertical feed positions of the runout detection component so that the displacement sensor is close to the working outer circle of the saw blade and / or the working end face of the saw blade, and enter the set measurement distance; (5) Rotation acquisition: The rotation drive unit of the lifting and rotating mechanism rotates, thereby driving the brazed saw blade to rotate at a set speed; and synchronously acquires the displacement data sequence of each displacement sensor within at least one rotation. (6) Runout calculation: Calculate the radial runout value and the end face runout value. Take the maximum and minimum displacement data of the displacement sensor aligned with the working outer circle of the brazed saw blade within one revolution, and take the difference as the radial runout value; take the maximum and minimum displacement data of the displacement sensor aligned with the working end face of the brazed saw blade within one revolution, and take the difference as the end face runout value. (7) Judgment and sorting output: The end face runout value and radial runout value are compared with the preset thresholds respectively to obtain the qualified / unqualified or grade judgment result; The sorting result is then bound and stored with the serial number / station information of the current brazed saw blade. When the brazed saw blade enters the downstream sorting station, the corresponding sorting control signal is output to drive the sorting execution mechanism to complete the diversion and sorting.

10. The method for sorting and detecting runout of brazed saw blades as described in claim 9, characterized in that, In step (6), when the outer circle of the brazed saw blade to be tested is a discontinuous outer circle structure with discrete saw teeth, the radial displacement data collected during the rotation detection process is segmented for identification and processing: First, the sampled data is segmented by angle or time based on the rotation speed and number of saw teeth of the brazed saw blade, and the effective measurement data in each revolution or each cycle is extracted; then, the high-frequency saw tooth fluctuation component is weakened by filtering or envelope processing, and the low-frequency displacement trend reflecting the overall rotational eccentricity and outer circle consistency of the saw blade is retained; on this basis, the difference between the maximum and minimum values ​​of the processed displacement curve is taken as the radial runout value of the saw blade.

Images