An automatic bar material detection device for milling cutter production

Abstract

The invention discloses an automatic bar material detection device for milling cutter production, relates to the technical field of bar material detection, and solves the problem that the existing bar material defect detection method is single and incomplete; the automatic bar material detection device for milling cutter production comprises: a feeding module comprises a feeding bin and a pusher; a composite detection module comprises an eddy current detection unit and an ultrasonic detection unit, and the pusher pushes the bar material coming out of the feeding bin into the eddy current detection unit for first defect detection; the pusher pushes the bar material after the eddy current detection unit completes the first defect detection to the transmission module and transmits it to the ultrasonic detection unit for second defect detection, and the control module is connected with the feeding module, the composite detection module and the transmission module to judge whether the bar material has defects, and coordinates and controls the feeding speed and the transmission speed of the transmission module at the same time. The invention not only improves the accuracy and efficiency of milling cutter bar material detection, but also can effectively reduce production costs and improve the intelligence and automation level of the production line.

Description

Technical Field

[0001] The invention relates to the technical field of bar material detection, in particular to an automatic bar material detection device for milling cutter production. Background Art

[0002] In the production process of milling cutters, milling cutter bars play a key role as the raw material of milling cutters. For example, the quality of milling cutter bars will directly affect the cutting performance and service life of milling cutters. In the production process of milling cutter bars, the material may be affected by different processing pressures, temperatures and other factors, resulting in various surface and internal defects of milling cutter bars. If defective milling cutter bars are used to make milling cutters, the processed milling cutters will be unqualified or cause serious failures during use. In order to ensure the quality of milling cutters, strict quality inspections are usually required during the production of milling cutter bars to ensure that they meet the processing requirements.

[0003] Chinese patent application CN117490525A discloses an automatic detection device for bars used in PCB milling cutter production, wherein a plurality of rebound displacement sensors evenly distributed around the circumference are arranged inside a cylinder, arc blocks are fixed at the ends of the rebound displacement sensors, and the plurality of rebound displacement sensors are electrically connected to a computer through wires; the bar contacts the plurality of arc blocks, and the bar rotates, and the rotating bar squeezes the plurality of arc blocks, and the plurality of arc blocks are forced to squeeze the rebound displacement sensors, and the rebound displacement sensors transmit signals to the computer through wires, and the computer determines whether the roundness and axial runout of the bar are qualified according to the force of the plurality of arc blocks. However, this solution can only detect large defects on the outside of the side surface of the bar, and there are problems such as a single detection method and lack of intelligent control. Summary of the invention

[0004] The object of the present invention is to provide an automatic bar material detection device for milling cutter production, so as to solve the problem that the existing bar material defect detection method is single and incomplete.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an automatic bar material detection device for milling cutter production, comprising:

[0007] A feeding module, including a feeding bin and a pushing member;

[0008] A composite detection module, comprising an eddy current detection unit and an ultrasonic detection unit, wherein the pusher pushes the bar material coming out of the upper bin to the eddy current detection unit, and the eddy current detection unit performs a first defect detection on the bar material;

[0009] A conveying module, wherein the conveying module is used to connect the eddy current detection unit and the ultrasonic detection unit, the pushing member pushes the bar material that has completed the first defect detection onto the conveying module, the conveying module conveys the bar material to the detection area of ​​the ultrasonic detection unit, and the ultrasonic detection unit performs a second defect detection on the bar material;

[0010] A control module is connected to the feeding module, the composite detection module and the transmission module respectively, and is used to control the feeding module to feed materials, monitor the composite detection module to detect and process the detection data, and determine whether the bar material has defects.

[0011] Preferably, the discharge port of the upper hopper is aligned with the first slide, and the two ends of the first slide in the length direction are respectively connected to the pushing member and the eddy current detection unit, and the rod material moves down from the discharge port into the first slide, and is pushed to the eddy current detection unit by the pushing member to perform the first defect detection.

[0012] Preferably, a feeding unit is provided in the upper bin, and the feeding unit comprises an inclined slide and a feeding piece connected to one end of the inclined slide close to the discharge port;

[0013] The feeding member includes a rotating shaft and a plurality of blocking plates arranged on the rotating shaft, and the blocking plates are driven by the rotating shaft to rotate to control the bar material to fall from the discharge port into the first slideway;

[0014] Wherein, one end of the inclined slide seat close to the discharge port is lower.

[0015] Preferably, the eddy current detection unit comprises a first detection structure;

[0016] The first detection structure is provided with a placement cavity for placing the bar material, the placement cavity penetrates the first detection structure in the y-axis direction, and the first slideway is connected to the placement cavity;

[0017] The first detection structure is an eddy current detection method, and the first defect detection is a side surface detection of the bar.

[0018] Preferably, the eddy current detection unit further comprises a first sorting component and a first counter, and the first sorting component and the first counter are arranged on the side of the conveying module;

[0019] The control module acquires first detection data corresponding to each bar material according to the first detection structure detection, and encodes the bar material corresponding to the first detection data according to the acquisition order of the first detection data to acquire a first code number of each bar material;

[0020] The control module determines whether the bar material has defects according to the first detection data, and marks the first code of the defective bar material as abnormal;

[0021] The first counter is used to accumulate the number of bars that have completed the first defect detection to obtain a first count value, and send the first count value to the control module. The control module determines whether the bar is a defective bar based on the first coding number and the first count value, and controls the first sorting component to push the defective bar out of the conveying module.

[0022] Preferably, the ultrasonic detection unit includes two second detection structures;

[0023] Two second detection structures are symmetrically arranged on both sides of the conveying module, and the detection area is between the two second detection structures. When the bar material is located in the detection area on the conveying module, both ends of the bar material in the length direction are respectively attached to one of the second detection structures to perform the second defect detection;

[0024] The second detection structure acquires second detection data of the bar material and sends it to the control module;

[0025] The detection method of the second detection structure is ultrasonic detection, and the second defect detection is the detection of internal defects of the bar.

[0026] Preferably, the ultrasonic detection unit further comprises a second sorting element and a second counter; the second sorting element and the second counter are arranged on the side of the transmission module, and the second sorting element is arranged close to the second detection structure on the y-axis;

[0027] The control module encodes the bars corresponding to the second detection data according to the acquisition order of the second detection data to obtain the second code of each bar;

[0028] The control module determines whether the bar material has defects according to the second detection data, and marks the second code of the defective bar material as abnormal;

[0029] The second counter is used to accumulate the number of bars that have completed the first defect detection to obtain a second count value, and send the second count value to the control module;

[0030] The control module determines whether the bar is a defective bar according to the second coding number and the second counting value, and controls the second sorting component to push the defective bar out of the conveying module.

[0031] Preferably, the conveying module comprises a mounting base and a conveying component, the length direction of the conveying component is parallel to the y-axis and is mounted on the mounting base, and a conveying groove is provided on the upper surface of the conveying component;

[0032] The eddy current detection unit further includes a second slideway, the second slideway is connected to the placement cavity in the y-axis direction, and the bar material that has completed the first defect detection is pushed from the placement cavity to the second slideway by the pushing member;

[0033] The conveying component is provided with a lower slide inclined at one end in the y-axis direction, the second slide is provided at one side of the lower slide and connected to the upper end of the lower slide, the lower end of the lower slide is provided above the first end of the conveying trough, and the bar moves from the second slide to the lower slide and slides down along the lower slide into the conveying trough.

[0034] Preferably, a partition is obliquely arranged in the upper material bin, and a lower material channel for the rods to pass through is provided between one end of the partition close to the first slideway and the inner wall of the upper material bin.

[0035] In a second aspect, the present invention provides a production line, comprising at least one automatic bar material detection device for milling cutter production provided in the first aspect.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention provides an automatic detection device for bars used in milling cutter production, which performs comprehensive detection of surface defects and internal defects of milling cutter bars through composite eddy current detection and ultrasonic detection. Composite detection overcomes the limitations of a single detection technology, ensuring all-round, high-precision quality detection of milling cutter bars. At the same time, the control module controls the loading of the loading module, controls the pusher to push the bar into the eddy current detection unit for a first defect detection, obtains the detection data and processes it to determine whether the bar has defects; the bar that does not have defects in the first defect detection is transmitted to the detection area of ​​the ultrasonic detection unit through the transmission module for a second defect inspection, the control module obtains the detection data of the second defect detection and processes it to determine whether there are defects, and combines with the transmission module to separate the bar that has defects in the second defect inspection from the bar that does not have defects.

[0038] The present invention can comprehensively detect the surface and interior of the milling cutter bar at the same time by using two detection technologies, composite eddy current and ultrasonic wave. The composite detection method can avoid the problem that the traditional single technology cannot comprehensively detect defects, and improve the accuracy and comprehensiveness of the detection. Secondly, the intelligent control module enables the entire detection process to be automated and coordinated, reduces manual intervention, avoids operating errors, and improves the efficiency of the production line. The control module monitors the operating status of each detection unit and adjusts parameters such as the detection speed and transmission speed in real time to ensure the smooth progress of the entire production process.

[0039] The present invention adopts a modular design, and realizes an efficient and coordinated working mechanism through the combination of a composite detection module, an eddy current detection unit, an ultrasonic detection unit and a transmission module, thereby improving the flexibility and scalability of the system. The technical solution provided by the present invention not only improves the accuracy and efficiency of milling cutter bar detection, but also can effectively reduce production costs and improve the intelligence and automation level of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0042] Figure 1 A first structural schematic diagram of the automatic bar material detection device for milling cutter production provided in Example 1;

[0043] Figure 2 A second structural schematic diagram of the automatic bar material detection device for milling cutter production provided in Example 1;

[0044] Figure 3 A third structural schematic diagram of the automatic bar material detection device for milling cutter production provided in Example 1;

[0045] Figure 4 A first structural schematic diagram of a loading bin in the automatic bar material detection device for milling cutter production provided in Example 1;

[0046] Figure 5 A second structural schematic diagram of a loading bin in the automatic bar material detection device for milling cutter production provided in Example 1;

[0047] Figure 6 A third structural schematic diagram of the loading bin in the automatic bar material detection device for milling cutter production provided in Example 1;

[0048] Illustration Description:

[0049] 1. Loading module; 11. Pushing member; 12. Loading bin; 121. Discharging port; 122. Partition plate; 123. Discharging channel; 13. First slideway; 14. Feeding unit; 141. Inclined slide seat; 1411. Inclined surface; 1412. Inclined plate; 142. Feeding member; 1421. Rotating shaft; 1422. Blocking plate; 14221. Discharging part; 14222. Blocking part; 1423. Driving member; 15. Mounting table;

[0050] 2. Composite detection module; 21. Eddy current detection unit; 211. First detection structure; 2111. Placement cavity; 2112. Heat sink; 212. First selection element; 213. First counter; 214. Second slideway;

[0051] 22. Ultrasonic detection unit; 221. Second detection structure; 222. Second sorting element; 223. Second counter;

[0052] 3. Conveying module; 31. Mounting base; 311. First supporting base; 312. Second supporting base; 313. Mounting base; 3131. Support member; 3132. Protective plate; 32. Conveying assembly; 321. Lower slide plate; 322. Conveying trough; 3221. First end; 3222. Second end; 323. First rotating member; 324. Second rotating member; 325. First conveying member; 326. Guide frame; 327. Driving motor; 328. Second conveying member;

[0053] 4. Control module; 41. PC terminal; 42. Data processing controller;

[0054] 5. The third option. DETAILED DESCRIPTION

[0055] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0057] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0058] Embodiment 1:

[0059] Please refer to Figure 1-Figure 6 The embodiment of the present invention provides an automatic bar material detection device for milling cutter production, comprising:

[0060] The feeding module 1 comprises a feeding bin 12 and a pushing member 11;

[0061] The composite detection module 2 includes an eddy current detection unit 21 and an ultrasonic detection unit 22. The pusher 11 pushes the bar material coming out of the loading bin 12 into the eddy current detection unit 21. The eddy current detection unit performs a first defect detection on the bar material.

[0062] The transmission module 3 is used to connect the eddy current detection unit 21 and the ultrasonic detection unit 22. The pusher 11 pushes the bar material that has completed the first defect detection onto the transmission module 3. The transmission module 3 transmits the bar material to the detection area of ​​the ultrasonic detection unit 22. The ultrasonic detection unit performs a second defect detection on the bar material.

[0063] The control module 4 is connected to the feeding module 1, the composite detection module 2 and the transmission module 3 respectively, and is used to control the feeding of the feeding module 1, monitor the detection of the composite detection module 2 and process the detection data to determine whether there are defects in the bar material.

[0064] Specifically, the transmission module 3 is placed horizontally, the loading module 1 is arranged on one side of the transmission module 3, the eddy current detection unit 21 is arranged between the transmission module 3 and the loading module 1, the bar material is placed in the loading bin 12 and the pusher 11 is controlled to push the bar material into the eddy current detection unit 21 for detection, and the pusher 11 pushes the bar material that has completed the first defect detection in the eddy current detection unit 21 to the transmission module 3 for transmission. An alternating magnetic field is generated inside the eddy current detection unit 21. When the bar material is pushed into the eddy current detection unit 21 by the pusher 11, the whole is placed in the alternating magnetic field. The alternating magnetic field forms eddy currents on the surface of the bar material, and the eddy current data is obtained and sent to the control module 4. Eddy current data refers to a data set of all signal characteristics obtained during the eddy current detection process, including various parameters such as time domain characteristics, frequency domain characteristics, amplitude, phase, frequency, noise level, impedance change, etc. Whenever the eddy current detection unit 21 performs the first defect detection on a bar material, a set of detection data can be obtained. The set of detection data is also called eddy current data features and corresponds to the bar material one by one.

[0065] Eddy current data includes echo signals. When there are defects on the surface of the bar (such as cracks, holes, etc.), the defects will cause changes in the eddy current when the eddy current propagates, which is manifested as a disturbance of the magnetic field (the reflection intensity of the eddy current data changes. If the reflection intensity is abnormal, it is determined to be a potential defect area). The disturbance of the magnetic field will cause the receiving coil of the eddy current detection unit 21 to induce current, that is, generate an echo signal. The characteristics of the echo signal (such as amplitude, frequency, phase, etc.) are related to the type, location and size of the defect.

[0066] The transmission module 3 transmits the bar material without defects in the first defect detection to the detection area of ​​the ultrasonic detection unit 22 for the second defect detection. The ultrasonic detection unit 22 transmits the ultrasonic wave into the bar material, and the ultrasonic wave will propagate in a straight line; when there is no defect, the ultrasonic wave will return at the expected speed. From the waveform, the intensity, frequency and waveform of the echo signal are usually stable, and the time delay of the echo signal is relatively regular, indicating that there is no obvious defect in the area; when the ultrasonic wave encounters a defect (such as a crack, a hole, a layer, etc.), part of the ultrasonic wave is reflected back to the transducer in the ultrasonic detection unit 22. By calculating the time delay of the echo signal, the location and depth of the defect can be determined; the size and type of the defect will affect the intensity of the echo, and a larger defect will cause a stronger echo signal; at the same time, the waveform of the echo signal can reflect the nature of the defect to a certain extent (such as the shape of a crack or a hole). The echo signal characteristics corresponding to each bar material are the detection data obtained by the ultrasonic detection unit 22 for the second defect detection of the bar material. The second defect detection is the internal defect detection of the bar material.

[0067] The control module 4 controls the loading speed of the loading bin 12, and controls the pushing member to push the rod into the eddy current detection unit 21 for detection according to the loading speed, and monitors the detection speed of the eddy current detection unit 21 at the same time. When acquiring the detection data in the eddy current detection unit 21, the pushing member 11 is controlled to push the rod out of the eddy current detection unit 21. After the rod comes out of the eddy current detection unit 21, it enters the conveying module 3 for transmission. When the rod is transmitted on the conveying module 3, it will pass through the detection area of ​​the ultrasonic detection unit 22 for detection of the second defect.

[0068] The control module 4 includes a PC terminal 41 and a data processing controller 42. The PC terminal 41, the feeding module 1 and the eddy current detection unit 21 are all arranged on the installation table 15. The data processing controller 42 is arranged inside the installation table 15. The data processing controller 42 is connected to the feeding module 1, the composite detection module 2 and the transmission module 3, and is used to obtain detection data and control the operation of the entire device. The operator controls the operation of the data processing controller 42 through the PC terminal 41, thereby controlling the entire automatic detection device for bar materials used in milling cutter production.

[0069] In one embodiment, please refer to Figure 4-Figure 6 The discharge port 121 of the upper bin 12 is aligned with the first slide 13, and the two ends of the first slide 13 in the length direction are respectively connected to the pushing member 11 and the eddy current detection unit 21. The bar moves down from the discharge port 121 into the first slide 13, and is pushed to the eddy current detection unit 21 by the pushing member 11 for the first defect detection.

[0070] Specifically, the first slide 13 is an open arc-shaped structure, and a long strip-shaped discharge port 121 is arranged at the lower side of the upper bin 12 close to the pushing member 11. The discharge port 121 is aligned with the first slide 13. After the rod comes out of the discharge port 121, it directly falls into the first slide 13. The arc-shaped setting of the first slide 13 can prevent the rod from sliding out of the first slide 13. At the same time, one end of the first slide 13 is directly connected to the eddy current detection unit 21, and the other end is provided with a pushing member 11. The pushing rod on the pushing member 11 abuts against one end face of the rod, and the rod is moved along the first slide 13 on the y-axis into the eddy current detection unit 21, and finally placed in the eddy current detection unit 21 for the first defect detection. Then, the rod that has completed the first defect detection is pushed out of the eddy current detection unit 21 and falls into the conveying module 3 for transmission.

[0071] Preferably, the pusher 11 is a cylinder, which drives and controls the push rod to push the bar material to slide in the first slideway 13 and push the bar material out of the eddy current detection unit 21. The pushing frequency of the pusher 11 is controlled by the control module 4 according to the detection speed of the composite detection module 2 and the transmission speed of the transmission module 3.

[0072] In one embodiment, please refer to Figure 4-Figure 6 A feeding unit 14 is provided in the upper bin 12, and the feeding unit 14 includes an inclined slide 141, and a feeding member 142 connected to one end of the inclined slide 141 close to the discharge port 121;

[0073] The feeding member 142 includes a rotating shaft 1421 and a plurality of blocking plates 1422 disposed on the rotating shaft 1421. The rotating shaft 1421 drives the blocking plates 1422 to rotate to control the bar material to fall from the discharge port 121 into the first slideway 13.

[0074] The end of the inclined slide seat 141 close to the discharge port 121 is lower.

[0075] Specifically, the inclined slide 141 is placed at the bottom of the upper bin 12, and the side used to contact the rod material is the inclined surface 1411. The lower end of the inclined surface 1411 is close to the discharge port 121. The length direction of the rod material is parallel to the y-axis direction and is placed in the upper bin 12. The rod material slides on the inclined surface 1411 to the discharge port 121, and rolls from the discharge port 121 to the first slide 13.

[0076] The feeding member 142 is arranged at the lower end of the inclined surface 1411, one end of the rotating shaft 1421 passes through the side wall of the upper bin 12 and is fixed through the inclined slide 141, and the other end is placed outside the side wall of the upper bin 12 and is connected to a driving member 1423. The control module 4 controls the rotation frequency of the rotating shaft 1421 through the driving member 1423, thereby controlling the frequency of the rods in the upper bin 12 entering the first slide 13.

[0077] Preferably, the inclined slide 141 includes two inclined plates 1412, both of which are in the shape of a right triangle. The two inclined plates 1412 are symmetrically arranged at the bottom of the upper bin 12, and a certain distance is spaced in the middle. The right angle sides of the two inclined plates 1412 are in contact with the bottom of the upper plate, and the two oblique sides form an inclined surface 1411 for contacting the bar material and controlling the rolling direction of the bar material. The rotating shaft 1421 is arranged through the two inclined plates 1412, and the rotating shaft 1421 located between the two inclined plates 1412 is installed with a plurality of material blocking plates 1422. The material blocking plates 1422 include a material discharge portion 14221 and a material blocking portion 14222. The material discharge portion 14221 and the material blocking portion 14222 are connected by an arc line to form an arc-shaped area for placing the bar material. One end of the material blocking portion 14222 is enlarged and the outer part is arc-shaped. During the rotation of the rotating shaft 1421, when the discharge part 14221 points upward, the arc area faces the bars rolling down from the inclined slide 141, and the bars at the bottom roll down into the arc area. The driving member 1423 controls the rotating shaft 1421 to rotate around the first rotation direction, driving the feeding member 142 to rotate until the discharge part 14221 points to the discharge port and the first slide 13. At this time, the bars in the arc area roll out of the discharge port 121 along the discharge part 14221 and fall into the first slide 13. During this rotation process, the blocking part 14222 rotates from the bottom of the upper bin 12 to between the discharge part and the bars to prevent the bars from rolling down further. After the loading of the bars is completed, the driving member 1423 controls the rotating shaft 1421 to rotate around the second rotation direction, so that the discharge part 14221 points to the z-axis upward direction, and the blocking part 14222 returns to the bottom of the upper bin 12. The first rotation direction and the second rotation direction are opposite. Meanwhile, the discharge port 121 is configured to allow only one bar material and a feeding member 142 to pass through.

[0078] Preferably, the inclination angle of the inclined surface 1411 needs to be controlled to prevent multiple bars from rolling toward the discharge port 121 at the same time and blocking the discharge port 121. The inclination angle of the inclined slide 141 includes 10° to 30°.

[0079] Preferably, a partition 122 is obliquely provided in the upper material bin 12 , and a lower material channel 123 for the rods to pass through is provided between one end of the partition 122 close to the first slideway 13 and the inner wall of the upper material bin 12 .

[0080] The partition 122 is arranged to be inclined so that the bar material on the partition 122 can roll from the material discharge channel 123 to the inclined surface 1411 of the inclined slide 141 along the inclined direction. At the same time, its inclination angle is smaller than the angle of the inclined surface 1411 of the inclined slide 141, so as to prevent the bar material from rolling down too fast and impacting the bar material on the inclined surface 1411. Through the arrangement of the partition 122 and the material discharge channel 123, the bar material can be moved to the inclined surface 1411 of the inclined slide 141 in an orderly manner, so as to avoid the disorder of the bar material placement.

[0081] In one embodiment, please refer to Figure 1-Figure 3 The transmission module 3 includes a mounting base 31 and a transmission component 32. The length direction of the transmission component 32 is parallel to the y-axis and is mounted on the mounting base 31. A transmission groove 322 is provided on the upper surface of the transmission component 32.

[0082] The eddy current detection unit 21 includes a second slideway 214, which is connected to the placement cavity 2111 in the y-axis direction, and the rod material that has completed the first defect detection is pushed from the placement cavity 2111 to the second slideway 214 through the pushing member 11;

[0083] The conveying component 32 is provided with a lower slide 321 at an inclined position at one end in the y-axis direction. The second slide 214 is provided at one side of the lower slide 321 and connected to the upper end of the lower slide 321. The lower end of the lower slide 321 is provided above the first end 3221 of the conveying trough 322. The rod moves from the second slide 214 to the lower slide 321 and slides down the lower slide 321 into the conveying trough 322.

[0084] Specifically, the conveying assembly 32 includes a first rotating member 323 and a second rotating member 324 symmetrically arranged in the x-axis direction, and a first conveying member 325 sleeved between the first rotating member 323 and the second rotating member 324, and a guide frame 326 is placed above the first conveying member 325. The guide frame 326 is hollow in the middle, and a conveying groove 322 is formed on the first conveying member 325 by combining the guide frame 326 and the first conveying member 325. The bar material is conveyed by the first conveying member 325 in the conveying groove 322. The guide frame 326 can prevent the bar material from sliding out from both sides of the first conveying member 325, and at the same time, the setting of the guide member can ensure that when the bar material is conveyed in the conveying groove 322, its length direction is parallel to the y-axis.

[0085] The mounting base 31 includes a first support base 311 , a second support base 312 and a mounting base 313 for placing a driving motor 327 . The first mounting base 313 and the second mounting base 313 are arranged at an end distance in the x-axis direction to support the stability of the entire transmission module 3 .

[0086] The mounting seat 313 is arranged close to the second rotating member 324, and the driving motor 327 is arranged below the second rotating member 324. The second option and the driving motor 327 are connected via the second transmission member 328. The control module 4 controls the driving motor 327 to work, and the driving motor 327 drives the second rotating member 324 to rotate via the second transmission member 328. The second option rotates to drive the first transmission member 325 to rotate, and also drives the first rotating member 323 to rotate, thereby realizing the transmission of the bar material on the entire transmission assembly 32.

[0087] The mounting base 313 includes a support member 3131 and a protective plate 3132. The driving motor 327 is fixed on the support member 3131. The protective plate 3132 is arranged on one side of the first transmission member 325 to separate the driving output end of the driving motor 327, the second transmission member 328, and the connection position between the second transmission member 328 and the second rotating member 324.

[0088] The second slide 214 is connected to the placement cavity 2111 along the y-axis direction to ensure that after completing the first defect detection of the first detection structure 211, the bar can pass through the second slide 214 to the lower slide plate 321 and slide down along the lower slide plate 321 to smoothly enter the conveying groove 322.

[0089] Preferably, baffles are provided on both sides of the lower slide plate 321 on the y-axis to prevent the bar from detaching from the lower slide plate 321 from both sides when the bar slides on the lower slide plate 321 .

[0090] One side of the lower slide 321 is connected to the second slide 214, the upper end of the lower slide 321 is connected to the outlet of the second slide 214, and the lower end of the lower slide 321 is located above the first end 3221 of the conveying trough 322. Through this inclined design, after the bar flows from the second slide 214 into the lower slide 321, it will slide down naturally along the lower slide 321 and fall accurately into the conveying trough 322, thereby preventing the bar from being misplaced or slipping due to gravity and the slope.

[0091] Preferably, in the x-axis direction, the size of the first end 3221 of the conveying trough 322 is larger than the size of the second end 3222. By setting the size of the second end 3222 to be larger, when the rod slides from the lower slide plate 321 to the first end 3221 of the conveying trough 322, the inclined rod can also fall completely into the conveying trough 322.

[0092] Preferably, a guide portion is provided on the guide frame 326 at the first end 3221, and the guide portion is tilted at a certain angle so that during the transmission of the tilted bars, the length direction of the bars gradually becomes parallel to the y-axis along the guide portion, thereby achieving automatic regular arrangement of the bars.

[0093] In one embodiment, please refer to Figure 1-Figure 3 , the eddy current detection unit 21 includes a first detection structure 211;

[0094] The first detection structure 211 is provided with a placement cavity 2111 for placing the bar material, the placement cavity 2111 penetrates the first detection structure 211 in the y-axis direction, and the first slideway is connected to the placement cavity 2111;

[0095] The first detection structure 211 is an eddy current detection method, and the first defect detection is a side surface detection of the bar.

[0096] The side wall of the first detection structure 211 is provided with a plurality of permanent magnets and electromagnets, which are arc-shaped structures and can be attached to the side wall of the placement cavity 2111 to prevent the permanent magnets and electromagnets from being loosely installed and affecting the magnetic field direction of the alternating magnetic field. The permanent magnets and electromagnets are arranged alternately to form an NSNS arrangement to ensure that the magnetic field is evenly distributed throughout the annular structure, and the magnetic field direction in each ring is kept consistent by alternating arrangement, thereby avoiding interference with the magnetic field. The magnetic field formed in the placement cavity 2111 is perpendicular to the side surface of the bar material, so that eddy currents can be formed on the side surface.

[0097] A plurality of eddy current sensors are arranged in the first detection structure 211 . The eddy current sensors capture eddy current data excited by the alternating magnetic field and transmit the detected eddy current data to the control module 4 for analysis and processing.

[0098] Preferably, a plurality of heat sinks 2112 are disposed outside the first detection structure 211 to discharge the heat generated by the first detection structure 211 during detection into the air in a timely manner.

[0099] In one embodiment, the eddy current detection unit 21 further includes a first sorting element 212 and a first counter 213, and the first sorting element 212 and the first counter 213 are arranged on the side of the transmission module 3;

[0100] The control module 4 acquires first detection data corresponding to each bar material according to the first detection structure 211, and encodes the bar material corresponding to the first detection data according to the acquisition order of the first detection data, so as to acquire a first code number of each bar material;

[0101] The control module 4 determines whether the bar material has defects according to the first detection data, and marks the first code of the defective bar material as abnormal;

[0102] The first counter 213 is used to accumulate the number of bars that have completed the first defect detection to obtain a first count value, and send the first count value to the control module 4. The control module 4 determines whether the bar is a defective bar based on the first coding number and the first count value, and controls the first sorting component 212 to push the defective bar out of the conveying module 3.

[0103] Specifically, the first sorting element 212 and the first counter 213 are arranged on one side of the conveying module 3, and the bars that have completed the first defect detection will first pass through the first counter 213. The first counter 213 is used to accumulate the number of bars, and when each bar passes through the first counter 213, the first count value of the first counter 213 is increased by 1.

[0104] The first detection data is eddy current data, and the control module 4 encodes the rod material to obtain the first code according to the acquisition order of the first detection data detected by the first detection structure 211. For example, when the control module 4 acquires the first detection data for the first time, that is, the first code of the rod material encoding the first detection data is 1, the control module 4 acquires the first detection data for the second time, that is, the first code of the rod material encoding the first detection data is 2..., the control module 4 acquires the first detection data for the mth time, that is, the first code of the rod material encoding the first detection data is m.

[0105] The control module 4 processes the first detection data of each bar material received to determine whether there is a defect. If there is a defect, the first code of the bar material corresponding to the first detection data is marked as abnormal.

[0106] The control module 4 monitors the first count value of the first counter 213. For example, when the first code of the nth (n is less than or equal to m) bar undergoing the first defect detection is marked as abnormal by the control module 4, the control module 4 monitors that the first count value reaches n, and controls the first sorting component 212 to push the bar corresponding to the first count value out of the conveying module 3.

[0107] Preferably, the first counter 213 can count the bars by means of a photoelectric sensor, a contact sensor or a radio frequency identification (RFID) technology.

[0108] Preferably, the first counter 213 uses visual recognition to count the bars, and the visual recognition component is installed above the conveying module 3. When the bars are conveyed, they can pass through the shooting area of ​​the visual recognition component, thereby realizing the counting of the bars that have completed the first defect detection.

[0109] The first sorting part 212 includes a driving pusher, which is arranged near the first counter 213. When the bar material detected as defective in the first defect detection passes through the driving pusher, the control module 4 controls the driving pusher to move beyond the bar material in the y-axis direction, and pushes the bar material from the other side of the conveying module 3 to the recycling area to recycle the defective bar material.

[0110] This embodiment automatically encodes each bar material through the control module 4, can assign a unique code to each bar material in real time, and judge whether it has defects according to the first detection data, mark the first code of the defective bar material as abnormal, and ensure that the quality of each bar material is fully tracked and controlled. The first counter 213 can effectively count the number of bars that pass the first defect detection, and combine with the first code in the control module 4 to accurately judge the defective bars and sort them in time, automatically remove unqualified products, and prevent them from entering the subsequent links, thereby ensuring the efficient operation of the production line. The automatic separation of defective bars is achieved through the first sorting element 212, which improves production efficiency, reduces manual intervention, and reduces the risk of human error. This embodiment provides a flexible sorting function through the combination of the control module 4 and the first sorting element 212 and the first counter 213, which can accurately remove unqualified bars according to the detection results, and ensure that each bar material in the production process meets the quality requirements. The solution provided by this embodiment has high automation, intelligence, high efficiency and reliability, and can significantly improve the detection accuracy and speed of the production line, reduce production costs, and improve the quality control level of the milling cutter bar production process.

[0111] In one embodiment, please refer to Figure 1-Figure 3 , the ultrasonic detection unit 22 includes two second detection structures 221;

[0112] Two second detection structures 221 are symmetrically arranged on both sides of the conveying module 3, and the detection area is between the two second detection structures 221. When the bar material is located in the detection area on the conveying module 3, both ends of the bar material in the length direction are respectively attached to one of the second detection structures 221 for the second defect detection;

[0113] The second detection structure 221 obtains the second detection data of the bar material and sends it to the control module 4;

[0114] The detection method of the second detection structure 221 is ultrasonic detection, and the second defect detection is the detection of internal defects of the bar.

[0115] Specifically, the detection method of the second detection structure 221 is ultrasonic detection, and the two second detection structures 221 are symmetrically arranged on both sides of the conveying module 3, that is, installed on both sides of the y-axis direction guide frame 326, and the area between the two second detection structures 221 is the detection area. When the bar passes through the detection area during the conveying process, the two end surfaces in the length direction are respectively in contact with a second detection structure 221, and the two second detection units complete the second defect detection of the bar, and obtain the second detection data detected by the two second detection structures 221 and transmit it to the control module 4 for processing, and judge whether the bar has internal defects according to the second detection data.

[0116] Preferably, in addition to the components for generating incident ultrasonic waves and receiving echoes, the second structure also includes a coupling agent coating component. By connecting a coupling agent pipeline to the second detection structure 221, the coupling agent is connected to the contact surface, so that the coupling agent flows downward under the action of gravity to cover the contact surface, so that when the end face of the rod material contacts the contact surface, the space between the contact surface and the end face of the second detection structure 221 is filled with coupling agent, thereby improving the efficiency of ultrasonic wave conduction and avoiding ultrasonic wave signal reflection. Since connecting liquid through a catheter and allowing the liquid to flow out from a surface with fine cavities is a prior art, it will not be elaborated here.

[0117] In another embodiment, the ultrasonic detection unit 22 includes a second detection structure 221 and a pressing push piece. The second detection structure 221 and the pressing push piece are symmetrically arranged on both sides of the conveying module 3. A detection area is set between the second detection structure 221 and the pressing push piece. When the rod material is conveyed to the detection area, the control module 4 controls the pressing push piece to abut one end surface of the rod material to push the rod material toward the second detection structure 221, so that the other end surface of the rod material and the contact surface of the second detection combination are fitted to perform a second defect detection.

[0118] In one embodiment, please refer to Figure 1-Figure 3 , the ultrasonic detection unit 22 further includes a second sorting element 222 and a second counter 223; the second sorting element 222 and the second counter 223 are arranged on the side of the transmission module 3, and the second sorting element 222 is arranged close to the second detection structure 221 on the y-axis;

[0119] The control module 4 encodes the bars corresponding to the second detection data according to the acquisition order of the second detection data, so as to obtain the second code of each bar;

[0120] The control module 4 determines whether the bar material has defects according to the second detection data, and marks the second code of the defective bar material as abnormal;

[0121] The second counter 223 is used to accumulate the number of bars that have completed the first defect detection to obtain a second count value, and send the second count value to the control module 4;

[0122] The control module 4 determines whether the bar is a defective bar according to the second coding number and the second counting value, and controls the second sorting component 222 to push the defective bar out of the conveying module 3 .

[0123] Specifically, the second sorting element 222 and the second counter 223 are arranged on one side of the conveying module 3, and the bars that have completed the second defect detection will first pass through the second counter 223. The second counter 223 is used to accumulate the number of bars that have completed the second defect detection, and when each bar passes through the second counter 223, the second count value of the second counter 223 is increased by 1.

[0124] The second detection data is ultrasonic echo signal data. The control module 4 encodes the rod material to obtain the second code according to the acquisition order of the second detection data detected by the second detection structure 221. For example, when the control module 4 acquires the second detection data for the first time, the second code of the rod material corresponding to the second detection data is 1. The control module 4 acquires the second detection data for the second time, the second code of the rod material corresponding to the second detection data is 2..., the control module 4 acquires the second detection data for the mth time, the second code of the rod material encoded with the second detection data is m.

[0125] The control module 4 processes the second detection data of each bar material received to determine whether there is a defect. If there is a defect, the second detection data corresponding to the second code of the bar material is marked as abnormal.

[0126] The control module 4 monitors the second count value of the second counter 223. For example, when the second code of the nth (n is less than or equal to m) bar undergoing the second defect detection is marked as abnormal by the control module 4, the control module 4 monitors that the second count value reaches n, and controls the second sorting component 222 to push the bar corresponding to the second count value out of the conveying module 3.

[0127] Preferably, the second counter 223 can count the bars by means of a photoelectric sensor, a contact sensor or a radio frequency identification (RFID) technology.

[0128] Preferably, the second counter 223 uses visual recognition to count the bars, and the visual recognition component is installed above the conveying module 3. When the bars are conveyed, they can pass through the shooting area of ​​the visual recognition component, thereby realizing the counting of the bars that have completed the second defect detection.

[0129] The second sorting part 222 includes a driving pusher, which is arranged near the second counter 223. When the bar material detected with defects in the second defect detection passes through the driving pusher, the control module 4 controls the driving pusher to move beyond the bar material in the y-axis direction, and pushes the bar material from the other side of the conveying module 3 to the recycling area to recycle the defective bar material.

[0130] This embodiment automatically encodes each bar material through the control module 4, can assign a unique code to each bar material in real time, and judge whether it has defects according to the second detection data, and mark the second code of the defective bar material as abnormal, so as to ensure that the quality of each bar material is fully tracked and controlled. The second counter 223 can effectively count the number of bars that pass the second defect detection, and combine with the second code in the control module 4 to accurately judge the defective bars and sort them in time, automatically remove the unqualified products, and avoid them from entering the subsequent links, thereby ensuring the efficient operation of the production line. The automatic separation of defective bars is achieved through the second sorting part 222, which improves production efficiency, reduces manual intervention, and reduces the risk of human error. This embodiment provides a flexible sorting function through the combination of the control module 4 and the second sorting part 222 and the second counter 223, which can accurately remove unqualified bars according to the detection results, and ensure that each bar material in the production process meets the quality requirements. The solution provided by this embodiment has high automation, intelligence, high efficiency and reliability, which can significantly improve the detection accuracy and speed of the production line, reduce production costs, and improve the quality control level of the milling cutter bar production process.

[0131] In one embodiment, when a bar material completes the second defect detection, the control module 4 obtains the first detection data and the second detection data of the bar material, and compositely processes the first detection data and the second detection data to determine whether the bar material has defects.

[0132] Specifically, this embodiment provides a method for combining first detection data and second detection data to determine bar defects, the method comprising:

[0133] The first detection data and the second detection data of the bar material are obtained, and the first detection data and the second detection data are normalized to obtain the first processed data and the second processed data respectively.

[0134] The normalization processing method is:

[0135] ;

[0136] .

[0137] Among them, D 1 and D 2 are the data values ​​obtained by eddy current and ultrasonic testing, D min1 , D min2 , D max1 , D max2 is the minimum and maximum value of the corresponding data. The normalized data D norm1 and D norm2 The value range of will be [0, 1], which is convenient for subsequent weighted calculation.

[0138] The composite detection data of the bar material is obtained by weighted processing of the first processing data and the second processing data;

[0139] Assume that the weight of the first detection data is w 1 , the weight of the second detection data is w 2 , and satisfies w 1 +w 2 =1, then the composite detection data D composite It can be calculated by the following formula:

[0140] D composite =w 1 *D norm1 +w 2 *D norm2 ;

[0141] Among them, w 1 and w 2 The value of can be adjusted according to the accuracy and reliability of the two detection technologies. For example, after many experiments, it has been proved that when the eddy current detection method is used to detect surface defects of bar materials, the accuracy of the detection results is 95%, and when the ultrasonic detection method is used to detect internal defects of bar materials, the accuracy of the detection results is 98%. The weight can be adjusted according to the accuracy of the detection method. For example, the weight w is assigned to the first detection data of the eddy current. 1 =0.4, assign weight w to the second ultrasonic detection data 2 =0.6, reflecting the importance of ultrasonic testing in detecting internal defects.

[0142] The weights of the first test data and the second test data can also be adjusted and obtained by respectively obtaining the first test data and the second test data of a large number of bars, according to their influence on the subsequent operation of the bars. When a large number of bars were tested for surface defects by eddy current, it was found that the unqualified rate of defective bars that would affect the processing and the quality of the milling cutter after processing was 80%; when a large number of bars were tested for internal defects by ultrasonic wave, it was found that the unqualified rate of defective bars that would affect the processing and the quality of the milling cutter after processing was 80%. Compare which of the internal defects and surface defects of the bars has a greater influence on the quality of the bars processed into milling cutters and the quality of the milling cutters after processing. When it is believed that the surface defects have a greater influence on the quality of the bars processed into milling cutters and the quality of the milling cutters after processing, the weight of the first test data is appropriately increased, and the weight of the second test data is appropriately reduced. For example, w 1 =0.55, w 2 =0.45.

[0143] It is determined whether the composite detection data is greater than a composite threshold value. When the composite detection data is greater than the composite threshold value, the bar material is determined to be unqualified.

[0144] According to the composite detection data D composite The value of a composite threshold D can be set threshold ,When the composite detection data exceeds the composite threshold, it is considered that the bar material has defects.

[0145] Preferably, the first detection structure 211 and the first counter 213 and the first sorting element 212 in the eddy current detection unit 21 are set at an interval moving distance, so that when the first detection structure 211 completes the first defect detection and obtains the first detection data, the control module 4 has enough time to process the first detection data and determine whether the bar has defects. Similarly, the second detection structure 221 and the second counter 223 and the second sorting element 222 in the ultrasonic detection unit 22 need to have a certain distance, so that when the second detection structure 221 completes the second defect detection and obtains the second detection data, the control module 4 has enough time to process the second detection data and determine whether the bar has defects.

[0146] The distance between the first counter 213 and the first sorting component 212 and between the second counter 223 and the second sorting component 222 needs to be controlled short so that the control module 4 can quickly control the first sorting component 212 according to the first counter 213 and quickly control the second sorting component 222 according to the second counter 223 to quickly respond and push the defective rods out of the conveying module 3 and drop them into the recycling area for recovery.

[0147] Preferably, the first counter 213, the first sorting component 212, the second counter 223, and the second sorting component 222 are installed on the guide frame 326, and an ejection port is provided on the guide frame 326 in the direction in which the first sorting component 212 and the second sorting component 222 eject the defective rods, and the defective rods are ejected from the ejection port into the recovery area.

[0148] Preferably, the automatic bar inspection device for milling cutter production further comprises a third sorting component, through which the bar without defects is pushed to the next process for processing in the next processing step.

[0149] Embodiment 2:

[0150] Based on the automatic detection device for bar stock for milling cutter production provided in the above-mentioned embodiment 1, this embodiment provides a production line, and the production line includes the automatic detection device for bar stock for milling cutter production described in the above-mentioned embodiment 1.

[0151] The present embodiment provides a production line, which includes the automatic detection device for bar material for milling cutter production provided in the above-mentioned embodiment 1, and performs comprehensive detection of surface defects and internal defects of milling cutter bar material through composite eddy current detection and ultrasonic detection. The composite detection overcomes the limitations of a single detection technology, ensuring all-round and high-precision quality detection of milling cutter bar material. At the same time, the control module 4 controls the loading of the loading module 1, controls the pusher 11 to push the bar material into the eddy current detection unit 21 for a first defect detection, obtains the detection data and processes it to determine whether the bar material has defects; the bar material that does not have defects in the first defect detection is transmitted to the detection area of ​​the ultrasonic detection unit 22 through the transmission module 3 for a second defect inspection, the control module 4 obtains the detection data of the second defect detection and processes it to determine whether there are defects, and combines with the transmission module 3 to separate the bar material that has defects in the second defect inspection from the bar material that does not have defects.

[0152] Through the two detection technologies of composite eddy current and ultrasonic wave, the surface and the inside of the milling cutter bar can be fully inspected at the same time. Through the composite detection method, the problem that the traditional single technology cannot fully detect defects can be avoided, and the accuracy and comprehensiveness of the detection can be improved. Secondly, the intelligent control module 4 enables the entire detection process to be automated and coordinated, reducing manual intervention, avoiding operating errors, and improving the efficiency of the production line. The control module 4 monitors the operating status of each detection unit and adjusts the detection speed, transmission speed and other parameters in real time to ensure the smooth progress of the entire production process.

[0153] A modular design is adopted, and an efficient and coordinated working mechanism is realized through the combination of the composite detection module 2, the eddy current detection unit 21, the ultrasonic detection unit 22 and the transmission module 3, thereby improving the flexibility and scalability of the system. The technical solution provided by the present invention not only improves the accuracy and efficiency of the milling cutter bar detection, but also can effectively reduce the production cost and improve the intelligence and automation level of the production line.

[0154] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic bar material detection device for milling cutter production, characterized in that: include: A feeding module, including a feeding bin and a pushing member; The composite detection module includes an eddy current detection unit and an ultrasonic detection unit, wherein the pusher pushes the bar material coming out of the upper bin into the eddy current detection unit; the eddy current detection unit performs a first defect detection on the bar material; A conveying module, wherein the conveying module is used to connect the eddy current detection unit and the ultrasonic detection unit, the pushing member pushes the bar material that has completed the first defect detection onto the conveying module, the conveying module conveys the bar material to the detection area of ​​the ultrasonic detection unit, and the ultrasonic detection unit performs a second defect detection on the bar material; A control module, the control module is connected to the feeding module, the composite detection module and the transmission module respectively, and is used to control the feeding module to feed materials, monitor the composite detection module to detect and process the detection data, and determine whether the bar material has defects; The discharge port of the upper bin is aligned with the first slideway, and both ends of the first slideway in the length direction are respectively connected to the pusher and the eddy current detection unit. The bar material moves down from the discharge port into the first slideway and is pushed to the eddy current detection unit by the pusher to perform the first defect detection. The eddy current detection unit includes a first detection structure, a first sorting element and a first counter; The first detection structure is provided with a placement cavity for placing the bar material, the placement cavity penetrates the first detection structure in the y-axis direction, and the first slideway is connected to the placement cavity; The first detection structure is a detection method of eddy current detection, and the first defect detection is a side surface detection of the bar material; the first sorting element and the first counter are arranged on the side of the conveying module; The control module acquires first detection data corresponding to each bar material according to the first detection structure detection, and encodes the bar material corresponding to the first detection data according to the acquisition order of the first detection data to acquire a first code of each bar material; The control module determines whether the bar material has defects according to the first detection data, and marks the first code of the defective bar material as abnormal; The first counter is used to accumulate the number of bars that have completed the first defect detection to obtain a first count value, and send the first count value to the control module. The control module determines whether the bar is a defective bar based on the first code and the first count value, and controls the first sorting component to push the defective bar out of the conveying module.

2. The automatic bar material detection device for milling cutter production according to claim 1 is characterized in that: A feeding unit is provided in the upper bin, and the feeding unit comprises an inclined slide and a feeding piece connected to one end of the inclined slide close to the discharge port; The feeding member includes a rotating shaft and a plurality of blocking plates arranged on the rotating shaft, and the blocking plates are driven by the rotating shaft to rotate to control the bar material to fall from the discharge port into the first slideway; Wherein, one end of the inclined slide seat close to the discharge port is lower.

3. The automatic bar material detection device for milling cutter production according to claim 2 is characterized in that: The ultrasonic detection unit includes two second detection structures; Two second detection structures are symmetrically arranged on both sides of the conveying module, and the detection area is between the two second detection structures. When the bar material is located in the detection area on the conveying module, both ends of the bar material in the length direction are respectively attached to one of the second detection structures to perform the second defect detection; The second detection structure acquires second detection data of the bar material and sends it to the control module; The detection method of the second detection structure is ultrasonic detection, and the second defect detection is the detection of internal defects of the bar.

4. The automatic bar material detection device for milling cutter production according to claim 3 is characterized in that: The ultrasonic detection unit further includes a second sorting element and a second counter; the second sorting element and the second counter are arranged on the side of the transmission module, and the second sorting element is arranged close to the second detection structure on the y-axis; The control module encodes the bars corresponding to the second detection data according to the acquisition order of the second detection data to obtain the second code of each bar; The control module determines whether the bar material has defects according to the second detection data, and marks the second code of the defective bar material as abnormal; The second counter is used to accumulate the number of bars that have completed the first defect detection to obtain a second count value, and send the second count value to the control module; The control module determines whether the bar is a defective bar according to the second code and the second count value, and controls the second sorting component to push the defective bar out of the conveying module.

5. The automatic bar material detection device for milling cutter production according to any one of claims 1 to 4, characterized in that: The transmission module comprises a mounting base and a transmission component, wherein the transmission component is mounted on the mounting base in a length direction parallel to the y-axis, and a transmission groove is provided on the upper surface of the transmission component; The eddy current detection unit further includes a second slideway, the second slideway is connected to the placement cavity in the y-axis direction, and the bar material that has completed the first defect detection is pushed from the placement cavity to the second slideway by the pushing member; The conveying component is provided with a lower slide inclined at one end in the y-axis direction, the second slide is provided at one side of the lower slide and connected to the upper end of the lower slide, the lower end of the lower slide is provided above the first end of the conveying trough, and the bar moves from the second slide to the lower slide and slides down along the lower slide into the conveying trough.

6. The automatic bar material detection device for milling cutter production according to claim 5, characterized in that: A partition is obliquely arranged in the upper material bin, and a lower material channel for the rods to pass through is arranged between one end of the partition close to the first slideway and the inner wall of the upper material bin.

7. A production line, characterized in that: The production line comprises the automatic bar material detection device for milling cutter production as described in any one of claims 1 to 6.

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