Circular run-out detection device

Abstract

The utility model discloses a circle run-out detection device, which belongs to the field of detection equipment and is used for solving the problem that the existing bar circle run-out detection is not accurate and efficient enough, the circle run-out detection device comprises a base, a positioning block, a bottom positioning device, a rotating mechanism and a detection mechanism, the positioning block is arranged on the base and is provided with a V-shaped positioning hole, and the bottom positioning device is arranged on the bottom positioning device. The positioning device is used for positioning the side face of a bar which is vertically placed. The bottom positioning device is used for positioning the bottom of the bar; the rotating mechanism comprises a mounting seat, a driving motor, a belt pulley and a tensioning belt, the driving motor, the belt pulley and the tensioning belt are arranged on the mounting seat and are sequentially in transmission connection, the tensioning belt is used for pulling the bar so that the side face of the bar can make contact with and be positioned on the inner side of the positioning hole, and the tensioning belt is further used for driving the bar to rotate; and the detection mechanism is used for detecting the circle run-out of the bar. The circle run-out detection device provided by the utility model can improve the accuracy of a detection result, improves the product positioning efficiency, and is beneficial to batch detection of products.

Description

Technical Field

[0001] The utility model relates to the field of detection equipment, in particular to a circular runout detection device. Background Art

[0002] In the related art, the circular runout detection of bars or other objects of similar shapes mainly adopts two methods: horizontal detector and roundness meter. However, both methods have obvious limitations and defects.

[0003] Although horizontal detectors can perform effective inspection functions in many applications, they face significant challenges when dealing with products with a large aspect ratio and non-single diameter. It is often difficult to clamp both ends of such products at the same time. If only one end is clamped, the suspended front end will bend and sag due to its own weight, which will seriously affect the accuracy of the inspection results.

[0004] On the other hand, the roundness meter also faces the problem of clamping and positioning during the detection process. Due to the design limitations of the roundness meter's clamping method, the rods often cannot be automatically centered during detection, that is, it is impossible to ensure that the axis of the rod completely coincides with the preset center of the roundness meter. In order to overcome this problem, the position of the clamped rod needs to be finely adjusted through probe sensing before each detection, which includes adjustments in the four-axis directions of X, Y, Zx, and Zy. This process is not only complicated to operate, but also time-consuming. Usually each centering operation takes at least 3-5 minutes, which greatly reduces the detection efficiency. More importantly, due to the complexity and time-consuming nature of the adjustment process, the roundness meter cannot meet the needs of batch testing, which greatly limits its application scope in industrial production lines.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] The utility model provides a circular runout detection device, which at least solves the technical problem of how to improve the accuracy of the detection result and improve the product positioning efficiency.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0010] A circular runout detection device, comprising:

[0011] Pedestal;

[0012] A positioning block assembly, comprising at least one positioning block, the positioning block being arranged on the base and provided with a positioning hole, the positioning hole being V-shaped and used for lateral positioning of a vertically placed bar;

[0013] A bottom positioning device, disposed on the base and used to locate the bottom center of the rod;

[0014] The rotating mechanism comprises a mounting seat, a driving motor, a pulley and a tensioning belt, wherein the driving motor, the pulley and the tensioning belt are arranged on the mounting seat and are sequentially connected in transmission, and the tensioning belt is used to pull the rod to the inner side of the positioning hole and drive it to rotate;

[0015] The detection mechanism is used to detect the circular runout of the bar during rotation.

[0016] In some embodiments, the positioning block assembly includes at least two positioning blocks spaced apart in the height direction, one end of the tensioning belt passes through the gap between two adjacent positioning blocks and pulls the rod; or the positioning block is provided with a clearance hole in the middle of the positioning hole, one end of the tensioning belt passes through the clearance hole and pulls the rod.

[0017] In some embodiments, at least one column is provided on the base, and the positioning block is movably mounted on the column by means of a sleeve connection so as to adjust the height position of the positioning block.

[0018] In some embodiments, the bottom positioning device includes a pin disposed on the base, and the pin is used to locate the center of the bottom of the rod.

[0019] In some embodiments, the bottom positioning device includes an adjusting mechanism, and the ejector pin is movably mounted on the base through the adjusting mechanism. The adjusting mechanism is used to adjust the position of the ejector pin along a preset direction to accommodate rods with different radii.

[0020] In some embodiments, the base is provided with a slide groove, which extends along a preset direction and points to the positioning block; the adjustment mechanism includes a slide, a ball nut, a screw and an adjustment knob; the ejector pin is installed on the slide, and the slide is slidably arranged in the slide groove in the extension direction of the slide groove, the ball nut is connected to the slide and to the screw, and the screw is rotatably connected to the base and is arranged along the extension direction of the slide groove; the adjustment knob is connected to the screw, and is used to control the rotation of the screw by rotation, thereby driving the ball nut and the slide to move along the slide groove, thereby adjusting the position of the ejector pin.

[0021] In some embodiments, a scale is disposed on the base, and the scale extends along a preset direction and is parallel to the moving track of the positioning block, and is used to mark and measure the relative distance between the ejector pin and the positioning block.

[0022] In some embodiments, the mounting seat is rotatably connected to the base via a pin shaft, so that the mounting seat can rotate around the pin shaft, thereby driving the tensioning belt to pull the rod to the inside of the positioning hole.

[0023] In some embodiments, the detection mechanism includes a lifting mechanism, a lifting frame, a front end sensor and a laser detection head; the front end sensor is arranged on the lifting frame, and is used to detect the top position of the rod; the laser detection head is arranged on the lifting frame, and is used to detect the circular runout of the rod; the lifting mechanism is arranged on the base, and is used to drive the lifting frame to lift and lower, so that the front end sensor senses the top position of the rod, or the laser detection head is directed toward the circular runout detection position of the rod.

[0024] In some embodiments, the circular runout detection device includes a control system, which is used to set the circular runout detection position of the rod and control the lifting mechanism to drive the lifting frame to lift and lower, so that the front end sensor senses the top position of the rod, or makes the laser detection head face the circular runout detection position of the rod; the control system is also used to control the operation of the drive motor to rotate the rod and record the detection results of the laser detection head.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the circular runout detection device provided by the utility model has the following beneficial effects:

[0027] When the circular runout detection device is working, the rod to be detected is placed vertically, and the bottom of the rod is positioned by the bottom positioning device, and the rod is pulled by tightening the belt so that the side of the rod contacts and is positioned on the inner side of the positioning hole. Then, the rotating mechanism drives the pulley and the tightening belt to rotate in sequence through the driving motor, and the tightening belt drives the rod to rotate. Finally, the rod is detected by the detection mechanism during the rotation process to obtain the circular runout parameters of the rod. The rod is placed vertically during the entire detection process, and there is no problem of the rod bending due to its own weight when the horizontal detector is used to detect the circular runout of the rod, which can improve the accuracy of the detection result; at the same time, the positioning of the rod only needs to place the rod on the bottom positioning device, and tighten the rod by tightening the belt to position it on the positioning block. There is no need to use a probe to sense like the existing roundness meter, and adjust the position of the clamped rod in the four-axis directions of X, Y, Zx, and Zy respectively, which can effectively improve the positioning efficiency of the rod, thereby improving the detection efficiency. It can be seen that the circular runout detection device of the present invention can improve the accuracy of the detection results and improve the efficiency of product positioning, which is beneficial to batch detection of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of the circular runout detection device in the embodiment.

[0029] Figure 2 It is a stereoscopic diagram of the circular runout detection device in the embodiment at a first viewing angle.

[0030] Figure 3 It is a stereoscopic diagram of the circular runout detection device in the embodiment at a second viewing angle.

[0031] Figure 4 4 is a side view of the circular runout detection device in the embodiment.

[0032] Reference numerals:

[0033] Base 1, slide 10, column 11, scale 12;

[0034] Positioning block assembly 2, positioning hole 20, positioning block 21;

[0035] Bottom positioning device 3, ejector pin 31, slide table 32, ball nut 33, screw rod 34, adjustment knob 35;

[0036] Rotating mechanism 4, mounting seat 41, driving motor 42, pulley 43, tensioning belt 44, pin 45;

[0037] Detection mechanism 5, lifting mechanism 51, lifting frame 52, front-end sensor 53, laser detection head 54;

[0038] Rod 6, display module 7, setting module 8, machine cover 9. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0040] When the existing horizontal tester detects the roundness runout of bars, the suspended front end of the bar bends and sags due to its own weight, which seriously affects the accuracy of the test results. On the other hand, the roundness meter needs to use probe sensing to make fine adjustments to the position of the clamped bar before each test. This process is not only complicated to operate, but also time-consuming, greatly reducing the detection efficiency.

[0041] In order to solve the above technical problems, this embodiment provides a circular runout detection device, please refer to Figures 1 to 4 As shown, Figure 1 This is a front view of the circular runout detection device in the embodiment, Figure 2 is a stereoscopic diagram of the circular runout detection device in the embodiment at a first viewing angle, Figure 3 is a stereoscopic diagram of the circular runout detection device in the embodiment at a second viewing angle, Figure 4 4 is a side view of the circular runout detection device in the embodiment.

[0042] The circular runout detection device of this embodiment includes: a base 1, a positioning block assembly 2, a bottom positioning device 3, a rotating mechanism 4 and a detection mechanism 5.

[0043] The base 1 serves as a mounting foundation for the positioning block assembly 2 , the bottom positioning device 3 , the rotating mechanism 4 and the detecting mechanism 5 .

[0044] The positioning block assembly 2 includes at least one positioning block 21, such as Figure 2 and Figure 3 As shown, the positioning block 21 is arranged on the base 1 and is provided with a positioning hole 20. The positioning hole 20 is V-shaped and is used for side positioning of the vertically placed rod 6. It can be understood that the V-shaped positioning hole 20 is a left-right symmetrical structure.

[0045] Bottom positioning device 3, such as Figure 1 As shown, it is arranged on the base 1 and is used to locate the bottom center of the rod 6.

[0046] Rotating mechanism 4, such as Figure 2 and Figure 3 As shown, it includes a mounting base 41, a driving motor 42, a pulley 43 and a tensioning belt 44. The driving motor 42, the pulley 43 and the tensioning belt 44 are arranged on the mounting base 41 and are sequentially connected in transmission. The tensioning belt 44 is used to pull the rod 6 to the inner side of the positioning hole 20 and drive it to rotate.

[0047] Testing agency 5, such as Figure 1As shown, the detection mechanism 5 is used to detect the circular runout of the rod 6 during rotation. The detection mechanism 5 can be an existing mechanism for detecting circular runout and is adaptively installed according to the vertically placed rod 6.

[0048] When the circular runout detection device of the above technical solution is working, the rod 6 to be detected is placed vertically, and the bottom of the rod 6 is positioned by the bottom positioning device 3, and the rod 6 is pulled by the tensioning belt 44 so that the side of the rod 6 contacts and is positioned on the inner side of the positioning hole 20. Then, the rotating mechanism 4 drives the pulley 43 and the tensioning belt 44 to rotate in sequence through the driving motor 42, and the tensioning belt 44 drives the rod 6 to rotate. Finally, the rod 6 in the rotation process is detected by the detection mechanism 5 to obtain the circular runout parameters of the rod 6. The rod 6 is placed vertically during the entire detection process, and there is no problem of the rod 6 bending due to its own weight when the circular run-out of the rod 6 is detected by a horizontal detector, which can improve the accuracy of the detection result; at the same time, the positioning of the rod 6 only requires placing the rod 6 on the bottom positioning device 3, and tightening the rod 6 by tightening the belt 44 to position it on the positioning block 21. There is no need to use a probe to sense like the existing roundness meter, and adjust the position of the clamped rod 6 in the four-axis directions of X, Y, Zx, and Zy respectively, which can effectively improve the positioning efficiency of the rod 6, thereby improving the detection efficiency.

[0049] In one embodiment of the positioning block assembly 2, see Figure 2 and Figure 4 As shown, the positioning block assembly 2 includes at least two positioning blocks 21 spaced apart along the height direction. One end of the tensioning belt 44 passes through the gap between two adjacent positioning blocks 21 and pulls the rod 6. With this arrangement, the rod 6 can be stably positioned on the two positioning blocks 21 under the pulling of the tensioning belt 44, the force is more evenly applied, and the positioning is more reliable.

[0050] In another embodiment of the above-mentioned positioning block assembly 2 (not shown in the figure), the positioning block 21 is provided with a clearance hole in the middle of the positioning hole 20, one end of the tensioning belt 44 passes through the clearance hole and pulls the rod 6. This design enables the rod 6 to be supported by the walls of the clearance hole on both sides of the tensioning belt 44, and the positioning is stable. It is suitable for the situation where the positioning block 21 is thicker and the rod 6 can be positioned by a single positioning block 21.

[0051] To adjust the height of the positioning block 21, refer to Figure 2 and Figure 4 As shown, at least one column 11 is provided on the base 1, and the positioning block 21 is movably installed on the column 11 by means of a sleeve connection, so as to adjust the height position of the positioning block 21 to adapt to rods 6 of different sizes.

[0052] Exemplarily, after the height of the positioning block 21 is adjusted, it is fixed to the column 11 by means of locking bolts, or is fixed to the column 11 by means of a tight connection.

[0053] In one embodiment of the bottom positioning device 3, see Figure 2 and Figure 4 As shown, the bottom positioning device 3 includes an ejector pin 31 disposed on the base 1 , and the ejector pin 31 is used to locate the center of the bottom of the rod 6 . When the rod 6 rotates, it is supported by the ejector pin 31 and rotates around the ejector pin 31 .

[0054] In one embodiment of the above-mentioned ejector pin 31, the position of the ejector pin 31 on the base 1 can be adjusted. At this time, the bottom positioning device 3 includes an adjusting mechanism, and the ejector pin 31 is movably mounted on the base 1 through the adjusting mechanism. The adjusting mechanism is used to adjust the position of the ejector pin 31 along a preset direction, so as to adapt to rods 6 of different radii, thereby improving the applicability and compatibility of the detection product.

[0055] For example, see Figure 2 and Figure 4 As shown, the ejector pin 31 is movably mounted on the base 1 through the adjustment mechanism, which is realized by the following implementation: a slide groove 10 is provided on the base 1, and the slide groove 10 extends along a preset direction and points to the positioning block 21; the adjustment mechanism includes a slide 32, a ball nut 33, a screw 34 and an adjustment knob 35; the ejector pin 31 is mounted on the slide 32 by welding, threaded connection, etc., the slide 32 is slidably arranged in the slide groove 10 in the extension direction of the slide groove 10, the ball nut 33 is connected to the slide 32, and is connected to the screw 34, the screw 34 is rotatably connected to the base 1 and is arranged along the extension direction of the slide groove 10; the adjustment knob 35 is connected to the screw 34. When adjusting the position of the ejector pin 31, the rotation of the screw 34 is controlled by rotating the adjustment knob 35, thereby driving the ball nut 33 and the slide 32 to move along the slide groove 10, thereby adjusting the position of the ejector pin 31.

[0056] In order to know the relative distance between the ejector pin 31 and the positioning block 21 and make it fit the radius of the bar 6 to be tested, refer to Figure 2 As shown, a scale 12 is disposed on the base 1 , and the scale 12 extends along a preset direction and is parallel to the moving track of the positioning block 21 , and is used to mark and measure the relative distance between the ejector pin 31 and the positioning block 21 .

[0057] In another embodiment of the ejector pin 31 (not shown), the position of the ejector pin 31 on the base 1 is fixed. This design is suitable for the case where the size of the rod 6 is fixed and there is no need to adjust the position of the ejector pin 31.

[0058] In one embodiment of the tightening belt 44 pulling the rod 6 to the inner side of the positioning hole 20, see Figure 2 and Figure 3As shown, the mounting seat 41 is rotatably connected to the base 1 through the pin 45, so that the mounting seat 41 can rotate around the pin 45, thereby driving the tensioning belt 44 to pull the rod 6 to the inside of the positioning hole 20. Before testing, the mounting seat 41 is rotated a certain distance toward the positioning block 21, and the space between the tensioning belt 44 and the positioning hole 20 becomes larger, which is convenient for the rod 6 to be inserted. Subsequently, the mounting seat 41 is rotated away from the positioning block 21, so that the tensioning belt 44 pulls the rod 6, so that the rod 6 can be positioned on the inside of the positioning hole 20; wherein, the mounting seat 41 and the pin 45 can be fixed to each other or to the base 1 by locking bolts after rotation.

[0059] In another embodiment of the above-mentioned tension belt 44 pulling the rod 6 to the inner side of the positioning hole 20, the tension belt 44 is designed to have high elasticity. When the rod 6 needs to be placed, the user can pull the tension belt 44 manually or in other ways to deform and expand it, thereby providing a larger space for the rod 6, so that it can be more easily placed in the area between the tension belt 44 and the positioning block 21. Once the rod 6 is correctly placed, the user can loosen the tension belt 44, at which time the tension belt 44 will reset using its elastic properties, and in the process, the elastic force will pull the rod 6 toward the inner side of the positioning block 21 until the rod 6 is tightly fitted with the inner side of the positioning block 21, thereby achieving accurate positioning of the rod 6.

[0060] Exemplarily, the driving motor 42 and the pulley 43 are directly connected or indirectly connected via a belt transmission mechanism.

[0061] In one embodiment of the above detection mechanism 5, refer to Figure 2 and Figure 3 As shown, the detection mechanism 5 includes a lifting mechanism 51, a lifting frame 52, a front end sensor 53 and a laser detection head 54; the front end sensor 53 is arranged on the lifting frame 52, and is used to detect the top position of the rod 6; the laser detection head 54 is arranged on the lifting frame 52, and is used to detect the circular runout of the rod 6; the lifting mechanism 51 is arranged on the base 1, and is used to drive the lifting frame 52 to rise and fall, so that the front end sensor 53 senses the top position of the rod 6, or the laser detection head 54 is directed toward the circular runout detection position of the rod 6.

[0062] Among them, the laser detection head 54 is used to emit laser and receive the reflected laser signal. By analyzing the reflected laser signal, the circular runout of the rod 6 can be accurately measured; the lifting frame 52 is used to carry the laser detection head 54 to ensure that it can stably move to different height positions. The lifting mechanism 51 is installed on the base 1, and the lifting frame 52 is driven up and down by the existing lifting module or linear moving mechanism. The design of the lifting mechanism 51 enables the laser detection head 54 to be accurately adjusted to the circular runout detection position of the rod 6, so as to perform accurate measurement; the control system is used to control the movement of the lifting mechanism 51, as well as to receive and analyze the data of the laser detection head 54. The control system can automatically adjust the height of the lifting frame 52 according to preset parameters or operating instructions, so that the laser detection head 54 reaches the correct detection position. At the same time, the control system can also display the measurement results in real time and send the data to the host computer or other equipment for processing.

[0063] Exemplarily, the front-end sensor 53 is an existing photoelectric or laser sensor, and includes a transmitting end and a receiving end closed on both sides of the rod 6. When working, the front-end sensor 53 starts working, and the transmitting end sends out a light signal. If the rod 6 is located within the detection range of the sensor, the light signal is blocked by the rod 6, and the intensity of the light signal received by the receiving end is reduced or there is no signal at all. The system judges the top position of the rod 6 and outputs a corresponding signal based on the change of the light signal received by the receiving end. The signal can be transmitted to the control system, and the control system adjusts the lifting mechanism 51 according to the signal to accurately position or operate the rod 6.

[0064] In this embodiment, in order to realize automatic detection, the circular runout detection device includes a control system, which is used to set the circular runout detection position of the rod 6, and control the lifting mechanism 51 to drive the lifting frame 52 to lift, so that the front end sensor 53 senses the top position of the rod 6, or the laser detection head 54 faces the circular runout detection position of the rod 6; the control system is also used to control the drive motor 42 to work, so that the rod 6 rotates, and records the detection result of the laser detection head 54. The automatic detection process is as follows: after the rod 6 is correctly placed, the automatic control program of the control system is started by the start button, and the lifting mechanism 51 is controlled to drive the front end sensor 53 and the laser detection head 54 to start descending from the top of the rod 6. After the front end sensor 53 senses the top position of the rod 6, the lifting mechanism 51 is controlled to move to the preset circular runout detection position, the rotating mechanism 4 is controlled to work, so that the rod 6 rotates, and the laser detection head 54 is controlled to detect and record the circular runout of the rod 6 during the rotation process, and finally recorded in the storage terminal.

[0065] For example, see Figure 1 As shown, the control system further includes a display module 7 for displaying information such as detection results and values, and a setting module 8 for setting parameters such as the circular runout detection position.

[0066] For example, see Figure 1 As shown, the circular runout detection device also includes a machine cover 9 irradiated on the periphery of the base 1, and the machine cover 9 plays a protective role.

[0067] It can be understood that the above circular runout detection device can also be used to detect the circular runout of objects other than rods. The rod is used here only as one of the applicable objects to assist in explaining the structure and working mode of the circular runout detection device.

[0068] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular runout detection device, characterized in that: include: Pedestal; A positioning block assembly, comprising at least one positioning block, the positioning block being arranged on the base and provided with a positioning hole, the positioning hole being V-shaped and used for lateral positioning of a vertically placed bar; A bottom positioning device, disposed on the base and used to locate the bottom center of the rod; The rotating mechanism comprises a mounting seat, a driving motor, a pulley and a tensioning belt, wherein the driving motor, the pulley and the tensioning belt are arranged on the mounting seat and are sequentially connected in transmission, and the tensioning belt is used to pull the rod to the inner side of the positioning hole and drive it to rotate; The detection mechanism is used to detect the circular runout of the bar during rotation.

2. The circular runout detection device according to claim 1, characterized in that: The positioning block assembly comprises at least two positioning blocks spaced apart in the height direction, one end of the tensioning belt passes through the space between two adjacent positioning blocks and pulls the rod; Or the positioning block is provided with a clearance hole in the middle of the positioning hole, and one end of the tensioning belt passes through the clearance hole to pull the rod.

3. The circular runout detection device according to claim 1, characterized in that: At least one column is arranged on the base, and the positioning block is movably mounted on the column by means of sleeve connection, so as to adjust the height position of the positioning block.

4. The circular runout detection device according to claim 1, characterized in that: The bottom positioning device comprises an ejector pin arranged on the base, and the ejector pin is used to locate the center of the bottom of the rod.

5. The circular runout detection device according to claim 4, characterized in that: The bottom positioning device comprises an adjusting mechanism, through which the ejector pin is movably mounted on the base, and the adjusting mechanism is used to adjust the position of the ejector pin along a preset direction so as to adapt to rods of different radii.

6. The circular runout detection device according to claim 5, characterized in that: The base is provided with a slide groove, which extends along a preset direction and points to the positioning block; The adjustment mechanism includes a slide, a ball nut, a screw and an adjustment knob; the ejector pin is mounted on the slide, the slide is slidably arranged in the slide groove in the extension direction of the slide groove, the ball nut is connected to the slide and to the screw, the screw is rotatably connected to the base and is arranged along the extension direction of the slide groove; the adjustment knob is connected to the screw, and is used to control the rotation of the screw by rotating, thereby driving the ball nut and the slide to move along the slide groove, thereby adjusting the position of the ejector pin.

7. The circular runout detection device according to claim 5, characterized in that: A scale is arranged on the base, and the scale extends along a preset direction and is parallel to the moving track of the positioning block, and is used to mark and measure the relative distance between the ejector pin and the positioning block.

8. The circular runout detection device according to claim 1, characterized in that: The mounting seat is rotatably connected to the base via a pin shaft, so that the mounting seat can rotate around the pin shaft, thereby driving the tensioning belt to pull the rod to the inside of the positioning hole.

9. The circular runout detection device according to claim 1, characterized in that: The detection mechanism includes a lifting mechanism, a lifting frame, a front-end sensor and a laser detection head; The front end sensor is arranged on the lifting frame and is used to detect the top position of the rod; The laser detection head is arranged on the lifting frame and is used to detect the circular runout of the bar; The lifting mechanism is arranged on the base and is used to drive the lifting frame to move up and down, so that the front end sensor senses the top position of the rod, or the laser detection head faces the circular runout detection position of the rod.

10. The circular runout detection device according to claim 9, characterized in that: The circular runout detection device includes a control system, which is used to set the circular runout detection position of the bar material and control the lifting mechanism to drive the lifting frame to move up and down, so that the front end sensor senses the top position of the bar material, or the laser detection head faces the circular runout detection position of the bar material; The control system is also used to control the operation of the driving motor to rotate the rod and record the detection result of the laser detection head.

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