Device for detecting roundness runout of a workpiece

Abstract

The utility model provides a kind of device for detecting workpiece round run-out, it includes: support component, it includes vertically arranged support rod, the top of support rod is provided with the horizontal tray that can rotate around the longitudinal axis of support rod, horizontal tray is used to drive workpiece placed coaxially on support rod to rotate;And sensor, it is positioned with workpiece on horizontal tray and spaced apart and vertically to the longitudinal axis of support rod to workpiece's upper end surface emits signal, to detect the round run-out of workpiece. By the device of the utility model, the detection head of sensor does not need to be pressed on workpiece;And without compacting fixation to each workpiece to be measured, to greatly improve detection efficiency and detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection, and more specifically, to a device for detecting the circular runout of a workpiece. Background Technology

[0002] In conventional machining processes, when checking the circular runout of a workpiece, a dial indicator is typically used, pressed against the workpiece's end face. The workpiece is then rotated one revolution, and the deviation range of the dial indicator pointer is observed to determine the workpiece's circular runout deviation. This method requires extra caution, especially for lighter or thinner workpieces. Firstly, the workpiece must be firmly pressed down; otherwise, when the dial indicator head presses down, it may cause eccentricity, affecting the measurement results. Secondly, the pressing force must be controlled to prevent workpiece deformation.

[0003] Therefore, in this inspection process, each workpiece needs to be pressed tightly and the dial indicator pointer needs to be pressed on the end face of the workpiece before observation and determination. This is time-consuming and inefficient, and it can also easily cause deformation of thin workpieces, resulting in a decrease in inspection accuracy. Utility Model Content

[0004] The purpose of this invention is to solve or at least partially alleviate the above-mentioned problems by providing a device for detecting the circular runout of a workpiece.

[0005] This utility model provides a device for detecting the circular runout of a workpiece, comprising:

[0006] A support assembly includes a vertically arranged support rod, the top of which is provided with a horizontal tray rotatable about the longitudinal axis of the support rod. The horizontal tray is used to rotate a workpiece placed coaxially with the support rod.

[0007] A sensor, positioned spaced apart from the workpiece on a horizontal pallet and perpendicular to the longitudinal axis of the support rod, transmits signals toward the upper surface of the workpiece to detect its circular runout.

[0008] The device for detecting workpiece circular runout provided by this utility model detects the workpiece circular runout by using a non-contact sensor, avoiding the possibility of eccentricity and deformation caused by pressing the workpiece; and through the unique design of the horizontal tray in the support assembly that can be easily rotated, it realizes rapid online detection of workpiece circular runout in a non-contact manner.

[0009] Preferably, a column coaxial with the support rod is provided on the horizontal tray for matchingly passing through the center hole of the workpiece.

[0010] Preferably, the outer diameter of the horizontal tray is smaller than the outer diameter of the workpiece.

[0011] Preferably, a bearing is provided between the horizontal tray and the support rod.

[0012] Preferably, it also includes a feedback indicator device that is communicatively connected to the sensor, which issues an indicator signal when the sensor detects that the circular runout of the workpiece is unqualified.

[0013] Preferably, the indication signal is an audio signal or an optical signal.

[0014] Preferably, the sensor is mounted on an adjustable bracket to adjust its position relative to the workpiece.

[0015] Preferably, it also includes a base, a support rod is mounted on the base, and an adjustable bracket adjusts the distance between the sensor and the workpiece by fixing it to different positions on a track set on the base.

[0016] Preferably, the track is a guide rail or a groove.

[0017] Preferably, it also includes a magnetic metal base, with the support rod mounted on the metal base. The adjustable bracket is magnetically fixed to the metal base via a magnetic seat, thereby adjusting the distance between the sensor and the workpiece.

[0018] The advantages of this utility model are:

[0019] By using a non-contact sensor to detect workpiece circular runout, there is no need to press the sensor's detection head onto the workpiece; and by using a horizontal pallet mounted on a support rod that can rotate freely to support the workpiece, there is no need to press and fix each workpiece to be tested, thereby greatly improving detection efficiency and accuracy. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of an exemplary embodiment of the device for detecting the circular runout of a workpiece according to the present invention.

[0022] Figure 2 This is a schematic diagram of another exemplary embodiment of the device for detecting the circular runout of a workpiece according to the present invention.

[0023] Figure 3 This is a schematic diagram of another exemplary embodiment of the device for detecting the circular runout of a workpiece according to the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings. Moreover, for the purpose of clearly describing the invention, some parts may have been exaggerated. These do not constitute any limitation on the scope of protection of the present invention.

[0025] Figure 1 A schematic diagram of an exemplary embodiment of the device for detecting workpiece circular runout of the present invention is shown. As shown, the device 10 for detecting workpiece circular runout includes a support assembly and a sensor 11. The support assembly includes a support rod 13 and a horizontal tray 12. The support rod 13 is vertically fixed. The horizontal tray 12 is disposed on top of the support rod 13 and is rotatable about the longitudinal axis of the support rod 13. For example, the free rotation of the horizontal tray 12 can be achieved by a bearing disposed between the top of the horizontal tray 12 and the support rod 13. The horizontal tray 12 is used to support the workpiece to be detected. Figure 1 (Not shown in the image), the workpiece can be, for example, a relatively thin disc, weighing, for example, only 50g. In this example, the outer diameter of the horizontal tray 12 is preferably equal to or greater than the outer diameter of the workpiece to stably support it. The workpiece is placed on the horizontal tray 12 in such a way that the workpiece is coaxial with the longitudinal axis of the support rod 13, so that the end face of the workpiece is vertically upward. The inspector only needs to gently rotate the horizontal tray 12, and the horizontal tray 12 can rotate the workpiece placed on it more than one revolution. This support assembly arrangement reduces the risk of deformation caused by the workpiece being pressed and fixed, thereby ensuring the accuracy of the inspection.

[0026] Sensor 11 can be mounted on, for example, a bracket 14. The bracket 14 is spaced a certain distance from the support rod 13, ensuring that the sensor 11 is at a certain distance from the workpiece on the horizontal tray 12 for non-contact detection. This distance can be determined based on the detection range of the sensor 11, ensuring that the workpiece is within the detection range of the sensor 11. Furthermore, the sensor 11 can be adjusted on the bracket 14 in its vertical position and horizontal angle, thereby transmitting a signal perpendicular to the longitudinal axis of the support rod 13 towards the upper surface of the workpiece to detect its circular runout. The sensor 11 can be, for example, a proximity sensor. During detection, the sensor 11 transmits a signal towards the upper surface of the workpiece, which rotates together with the horizontal tray 12. When the sensor 11 receives a feedback signal, it indicates that the circular runout of the workpiece is acceptable; conversely, if one or more feedback signals are not received, it indicates that the circular runout of the workpiece is unacceptable.

[0027] The aforementioned device for detecting workpiece circular runout enables non-contact detection, avoiding deformation caused by workpiece compression and improving detection accuracy. Furthermore, since the horizontal pallet can be rotated manually with minimal force, the detection time for each workpiece is shortened, increasing detection efficiency.

[0028] Figure 2 A schematic diagram of another exemplary embodiment of the device for detecting workpiece circular runout according to the present invention is shown. As shown, the device 20 for detecting workpiece circular runout includes a support assembly and a sensor 21. Figure 1 Similar to the embodiment described above, the support assembly includes a support rod 23 and a horizontal tray 22 rotatable about the longitudinal axis of the support rod 23. The difference is that the horizontal tray 22 is provided with a column 25 coaxial with the support rod 23, for fitting through a thin workpiece 26 with a central hole placed on the horizontal tray 22. The column 25 further restricts the horizontal degree of freedom of the workpiece 26, preventing the workpiece from becoming eccentric when rotating with the horizontal tray 22, thus ensuring the accuracy of the inspection. Furthermore, the height of the column 25 can be greater than or equal to the height of the workpiece 26 to further limit the horizontal degree of freedom of the workpiece 26.

[0029] The outer diameter of the horizontal tray 22 can be less than or equal to the outer diameter of the workpiece 26 to ensure the accuracy of the inspection. Preferably, as shown in the figure, the outer diameter of the horizontal tray 22 is smaller than the outer diameter of the workpiece 26 to reduce assembly errors and ensure the accuracy of the inspection. Furthermore, when the workpiece 26 has a central annular groove for assembly, the outer diameter of the horizontal tray 22 can be set to be equal to the outer diameter of the central annular groove of the workpiece, thus allowing it to directly engage with the central annular groove of the workpiece 26. Optionally, when the outer diameter of the horizontal tray 22 is equal to the outer diameter of the workpiece 26, the horizontal tray 22 can be provided with a boss that can engage with the central annular groove. This further limits the degree of freedom of the workpiece 26 in the horizontal direction, improving the accuracy of the inspection.

[0030] In this example, the bracket 24 for positioning the sensor 21 is an adjustable bracket used to adjust the distance between the sensor 21 and the workpiece 26. To facilitate adjustment of the sensor 21's position, the device 20 for detecting workpiece runout may also include a base 27. A support rod 23 is mounted on the base 27, and the adjustable bracket 24 adjusts the distance between the sensor 21 and the workpiece 26 by fixing it to different positions on a track provided on the base 27. The track can be, for example, a guide rail or a groove. In this example, the track is a guide rail 28. Depending on the sensor 21's detection range, the sensor 21 can be fixed at a position spaced apart from the workpiece 26 but within its detection range by the guide rail 28 and a fixing member (not shown). Thus, the runout of the workpiece 26 on the horizontal pallet can be detected.

[0031] Figure 3 A schematic diagram of another exemplary embodiment of the device for detecting circular runout of a workpiece according to the present invention is shown. Figure 2 Similar to the previous embodiment, the device 30 for detecting workpiece circular runout includes a support assembly and a sensor 31. An adjustable bracket 34 for the support rod 33 and the positioning sensor 31 is mounted on a base 37, and the workpiece 36 is mounted on a horizontal tray 32 on top of the support rod 33. Unlike the previous embodiment, this example also includes a feedback indicator 39 communicatively connected to the sensor 31. The feedback indicator 39 can be mounted on the adjustable bracket 34 or placed separately in a location easily visible or audible to the inspector. The connection between the feedback indicator 39 and the sensor 31 can be a conventional wired or wireless connection. The feedback indicator 39 can be a normally closed device, meaning it does not normally emit any indicator signal, but only emits an indicator signal when it receives an activation signal from the sensor 31. Specifically, when the sensor 31 does not receive a feedback signal, i.e., sends an activation signal to the feedback indicator 39, the feedback indicator 39 emits an indicator signal to detect a workpiece with unacceptable circular runout. Alternatively, the feedback indicator 39 can also be a normally open device, as long as it can send an indicator signal to the detector when the sensor 31 does not receive a feedback signal.

[0032] Optionally, the indication signal can be an audio signal or a light signal. Of course, the indication signal is not limited to these; for example, it could be a vibration signal or any other indication signal that can be perceived by the inspector in a timely manner. In this example, the feedback indication device 39 is a feedback indicator light that illuminates or flashes when triggered. This indicates that a defective workpiece has been detected.

[0033] By setting up a feedback indicator device, the inspector can perceive obvious signals and promptly detect workpieces with non-compliant circular runout, thereby shortening the inspection time and improving inspection efficiency.

[0034] In this example, the base 37 is preferably a magnetic metal base, such as one made of iron or its alloys. The adjustable bracket 34 can be fixed to the metal base by a magnetic base 38 to facilitate adjustment of the distance between the sensor 31 and the workpiece 36 on the horizontal tray 32, thereby positioning the sensor 31 to emit a detection signal to the upper surface of the workpiece 36, spaced apart from the workpiece 36 on the horizontal tray 32 and perpendicular to the longitudinal axis of the support rod 33.

[0035] The solution provided by this invention is highly suitable for online rapid inspection on production lines to determine whether the circular runout of a workpiece meets the standard, and is particularly suitable for inspecting the circular runout of thin and light workpieces. By separating the sensor from the rotating workpiece, the pressure of the dial indicator probe on the workpiece, as in traditional inspection methods, is avoided. Furthermore, since the sensor does not directly contact or press against the workpiece, there is no need to clamp or fix the workpiece, thus avoiding the risk of deformation of thin and light workpieces. This improves inspection efficiency and accuracy.

[0036] The following reference Figure 3 The apparatus shown illustrates how to use the device of this invention to detect the circular runout of a workpiece.

[0037] First, adjust the position of sensor 31. Position sensor 31 on the adjustable bracket 34, roughly aligned with the horizontal tray 32. Then, depending on the type and model of sensor 31 used, move the magnetic base 38 to fix the adjustable bracket 34 at a certain position on the metal base 37, so that the support rod 33 is within the detection range of sensor 31. Further, install the feedback indicator 39, i.e., the feedback indicator light, which is communicatively connected to sensor 1, on the adjustable bracket 34, positioned above sensor 11.

[0038] Next, a workpiece that has passed the circular runout test, such as a workpiece that has passed the test by conventional testing methods, is placed on the horizontal tray 32 through the column 35. The angle and height of the sensor 31 are then adjusted so that the sensor 1 emits a signal perpendicular to the support rod 33 toward the upper surface of the workpiece, thereby fixing the sensor 31 at the required height and horizontal angle.

[0039] Next, the circular runout of workpiece 36 is detected. Sensor 1 is activated; workpiece 36 is placed on the horizontal tray 32 via the shaft 35; then the horizontal tray 32 is gently rotated. The rotating horizontal tray 32 causes workpiece 36 to rotate as well. If the feedback indicator light 39 does not illuminate, it indicates that the circular runout of the workpiece 36 being tested is acceptable; if the feedback indicator light 39 flashes, it indicates that the circular runout of the workpiece 36 being tested is unacceptable. The unacceptable workpiece is then separated.

[0040] The device of this invention can control the inspection time of each workpiece to within 10 seconds, thereby greatly improving inspection efficiency. Furthermore, since there is no need to clamp and fix the workpiece and a non-contact sensor is used, the risk of workpiece deformation is eliminated, thus improving inspection accuracy. Therefore, the device of this invention can realize online, rapid, and comprehensive inspection on the enterprise's production line, thereby saving the enterprise a significant amount of costs.

[0041] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An apparatus for detecting roundness runout of a workpiece, comprising: include: A support assembly includes a vertically arranged support rod, the top of which is provided with a horizontal tray rotatable about the longitudinal axis of the support rod. The horizontal tray is used to rotate a workpiece placed coaxially with the support rod. A sensor, positioned spaced apart from the workpiece on a horizontal pallet and perpendicular to the longitudinal axis of the support rod, transmits signals toward the upper surface of the workpiece to detect its circular runout.

2. The apparatus for detecting roundness runout of a workpiece of claim 1, wherein, The horizontal tray is provided with a column coaxial with the support rod, which is used to pass through the center hole of the workpiece.

3. The apparatus for detecting roundness runout of a workpiece of claim 2, wherein, The outer diameter of the horizontal tray is smaller than the outer diameter of the workpiece.

4. The apparatus for detecting roundness runout of a workpiece of claim 1, wherein, A bearing is provided between the horizontal tray and the support rod.

5. The apparatus for detecting roundness runout of a workpiece according to any one of claims 1 to 4, wherein It also includes a feedback indicator device that is communicatively connected to the sensor, which issues an indicator signal when the sensor detects that the circular runout of the workpiece is unqualified.

6. The apparatus for detecting roundness runout of a workpiece of claim 5, wherein, The indication signal is an audio signal or an optical signal.

7. The apparatus for detecting roundness runout of a workpiece of claim 5, wherein, The sensor is mounted on an adjustable bracket to adjust its position relative to the workpiece.

8. The apparatus for detecting roundness runout of a workpiece of claim 7, wherein, It also includes a base, on which the support rod is mounted, and the adjustable bracket adjusts the distance between the sensor and the workpiece by fixing it to different positions on a track set on the base.

9. The apparatus for detecting roundness runout of a workpiece of claim 8, wherein, The track is a guide rail or a groove.

10. The apparatus for detecting roundness runout of a workpiece of claim 7, wherein, It also includes a magnetic metal base, on which the support rod is mounted, and the adjustable bracket is magnetically fixed to the metal base via a magnetic seat, thereby adjusting the distance between the sensor and the workpiece.

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