TW202144734A - Office automation shaft size measuring apparatus and office automation shaft size measuring method - Google Patents

Abstract

The present disclosure relates to an office automation(OA) shaft size measuring apparatus and method. The apparatus includes: a station rotating unit, a shaft providing unit, an initial positioning unit, a secondary positioning unit, a size measuring unit, an unloading unit. The station rotating unit makes an OA shaft to be measured rotate in order between a loading station, an initial positioning station, a secondary positioning station, a measuring station and an unloading station. The shaft providing unit is used to provide the OA shaft to be measured to a shaft installation mechanism. The initial positioning unit is used to revise an initial deflection angle of the OA shaft to conduct an initial positioning. The unloading unit is used to make the OA shaft unloading divided. The OA shaft size measuring apparatus of the present disclosure may achieve automation, having features of faster measure speed, higher measure accuracy, etc.

Description

Office automation shaft core size measuring device and method

The present disclosure relates to a dimension measuring device, and more particularly, to an office automation shaft core dimension measuring device and method.

At present, the size measurement of the office automation (OA) shaft core mainly adopts the traditional manual contact measurement method, such as manual use of measuring tools such as micrometer, vernier caliper, plug gauge, etc. , the inspector obtains the appearance size of the shaft core by reading the results displayed by the measuring tool. The traditional measurement method mainly has the following shortcomings: First, the degree of automation is low, the work intensity of the inspector is high, and the work efficiency is low; second, the accuracy of the measurement results is subject to the inspection level of the inspector and the degree of work fatigue, such as long-term rapid measurement. , it will lead to lack of concentration and increase the reading error; third, it is impossible to quickly save a large number of measurement results, and then it is impossible to dynamically analyze the production status of the enterprise.

Due to the variety of OA shaft cores, and the complex shapes of some OA shaft core parts, there are many factors affecting the measurement accuracy, so traditional measurement tools are difficult to meet the requirements of manufacturers for measurement accuracy, which further increases the difficulty of measurement and increases the detection cost. .

In view of this, it is necessary to provide an OA shaft core size measuring device and method, which can realize automation and solve the problems faced by the prior art.

In order to solve the above problem, the present disclosure provides an office automation (OA) shaft core size measuring device. The OA shaft core size measuring device includes a station rotation unit, a shaft core supply unit, an initial positioning unit, a secondary positioning unit, a size measuring unit and a blanking unit. The station rotation unit includes a station turntable and a transmission device. The transmission device is used to drive the station turntable to rotate, so that each shaft core installation mechanism on the station turntable is sequentially placed in the feeding station, the initial positioning station, and the second position. Rotate between secondary positioning station, measuring station and blanking station. The shaft core supply unit is used for providing the OA shaft core to be measured to the shaft core installation mechanism located at the loading station, and the shaft core installation mechanism is used for installing the OA shaft core. The initial positioning unit is used to correct the initial deflection angle of the OA shaft core located at the initial positioning station to perform initial positioning. The secondary positioning unit is used for correcting the remaining deflection angle of the OA shaft core at the secondary positioning station, performing secondary positioning, and measuring the size of the first part of the OA shaft core. The dimension measuring unit is used for measuring the dimension of the second part of the OA shaft core located at the measuring station. The blanking unit is used for blanking and shunting the OA shaft core located at the blanking station.

In an embodiment of the present disclosure, the shaft core installation mechanism includes a first shaft core installation mechanism, a second shaft core installation mechanism, a third shaft core installation mechanism, a fifth shaft core installation mechanism, and a sixth shaft core installation mechanism . When the first shaft core installation mechanism is located at the loading station, the second shaft core installation mechanism, the third shaft core installation mechanism, the fifth shaft core installation mechanism and the sixth shaft core installation mechanism are respectively located at the The initial positioning station, the secondary positioning station, the measuring station and the blanking station.

In an embodiment of the present disclosure, the shaft core installation mechanism further includes a fourth shaft core installation mechanism. When the first shaft core installation mechanism is located at the loading station, the fourth shaft core installation mechanism is located at the buffering station. position, the first axle core mounting mechanism, the second axle core mounting mechanism, the third axle core mounting mechanism, the fourth axle core mounting mechanism, the fifth axle core mounting mechanism and the sixth axle core mounting mechanism surround The axes of the station turntable are uniformly distributed in turn.

In an embodiment of the present disclosure, the transmission device includes a first servo motor, a first reducer, a first coupling and a first angular contact bearing seat, the first servo motor provides a rotational power source, and passes through the The first reducer, the first coupling and the first angular contact bearing seat are connected to the station turntable.

In an embodiment of the present disclosure, the shaft core supply unit automatically supplies the material, and provides the OA shaft cores one at a time.

In an embodiment of the present disclosure, the initial positioning unit includes an initial positioning camera and a four-claw rotation mechanism, the initial positioning camera is installed on the system support, and is used for taking pictures to calculate the initial deflection angle of the OA axis, the four The claw rotation mechanism is used to clamp the OA shaft core, and is used to drive the OA shaft core to rotate along the shaft center for initial positioning. After the initial positioning, the initial positioning camera takes a second photo to calculate the remaining deflection of the OA shaft core angle.

In an embodiment of the present disclosure, the four-claw rotating mechanism includes a second servo motor, a second coupling, a second angular contact bearing seat and a four-claw cylinder, the second servo motor provides a rotational power source, and is The second coupling and the second angular contact bearing seat are connected with the four-claw cylinder.

In an embodiment of the present disclosure, the initial positioning unit further includes a first Z-axis fine-tuning slide, a first Y-axis fine-tuning slide, a first X-axis adjustment bolt and a first Y-axis adjustment bolt. The first Y-axis adjusting bolt is arranged on the base rib of the first Y-axis fine-tuning slide table, and is used to make the rotation center line of the four-claw rotating mechanism parallel to the axis of the OA shaft core. The first Z-axis fine-tuning slide table is used for installing the four-claw rotating mechanism and for performing precise fine-tuning along the Z-axis direction of the four-claw rotating mechanism. The first Y-axis fine-tuning slide table is used to install the four-claw rotating mechanism, and is used for fine-tuning the four-claw rotating mechanism along the Y-axis direction. By adjusting the first Z-axis fine-tuning slide table and the first Y-axis fine-tuning slide The stage makes the rotation center of the four-jaw cylinder coaxial with the OA shaft core located at the initial positioning station. The first X-axis adjustment bolt is arranged on the base of the first Y-axis fine-tuning slide table, and is used to adjust the position of the four-claw rotating mechanism in the X-axis direction, so that the clamping range of the four-claw rotating mechanism is adjusted to the One end of the OA shaft.

In an embodiment of the present disclosure, the secondary positioning unit includes a secondary positioning camera and a camera rotation mechanism, and the camera rotation mechanism drives the secondary positioning camera to rotate, so that the secondary positioning camera is subdivided in the remaining deflection angle. Multiple photos were taken and calculated within the interval to obtain the photos closest to the ideal angle to measure the OA axis.

In an embodiment of the present disclosure, the camera rotation mechanism includes a third servo motor, a third reducer, a third coupling, a third angular contact bearing seat and a rotating bracket, and the secondary positioning camera includes a first area array camera and a second area scan camera. The third servo motor is used to provide a rotating power source, and is connected to the rotating support through the third reducer, the third coupling and the third angular contact bearing seat in sequence. The first area scan camera is mounted on the rotating support for measuring the inner hole diameter and taper size of the OA shaft, and the second area scan camera is mounted on the rotating support for measuring the thickness of the OA shaft .

In an embodiment of the present disclosure, the secondary positioning unit further includes a second Z-axis fine-tuning slide, a second Y-axis fine-tuning slide, and a second Y-axis adjusting bolt. The second Y-axis adjustment bolt is disposed on the base rib of the second Y-axis fine-tuning slide table, and is used to make the rotation center line of the camera rotation mechanism parallel to the axis of the OA shaft core. The second Z-axis fine-tuning slide table is used for installing the camera rotation mechanism and for fine-tuning the camera rotation mechanism along the Z-axis direction. The second Y-axis fine-tuning slide is used for installing the camera rotation mechanism and for fine-tuning the camera rotation mechanism along the Y-axis direction. By adjusting the second Z-axis fine-tuning slide and the second Y-axis fine-tuning slide, the The rotation center of the camera rotation mechanism is coaxial with the OA axis located at the secondary positioning station.

In an embodiment of the present disclosure, the dimension measuring unit includes a dimension measuring camera and a camera driving mechanism. The camera driving mechanism is mounted on the system support, the dimension measuring camera is mounted on the camera driving mechanism, and the camera driving mechanism is used to drive the dimension measuring camera to move along the X-axis direction to measure the measuring position at the measuring station. The length dimension, shaft diameter dimension, position dimension dimension and circular runout dimension of the OA shaft core.

In an embodiment of the present disclosure, the camera driving mechanism includes a first electric cylinder and a second electric cylinder, and the dimension measuring camera includes a first telecentric area scan camera and a second telecentric area scan camera. The first telecentric area scan camera and the second telecentric area scan camera are disposed just above the OA axis of the measurement station, and the first electric cylinder drives the first telecentric area scan camera to move along the X-axis direction , the second electric cylinder drives the second telecentric area scan camera to move along the X-axis direction.

The present disclosure also provides a method for measuring the size of an OA shaft core, which is applied to the above-mentioned OA shaft core size measuring device. The method for measuring the size of an OA shaft core includes the following steps: the shaft core supply unit supplies the OA shaft core to be measured to a The shaft core installation mechanism located at the feeding station; the station rotation unit rotates the OA shaft core from the feeding station to the initial positioning station, and the initial positioning unit corrects the initial position of the OA shaft core located at the initial positioning station. The deflection angle is used for initial positioning; the station rotation unit rotates the OA shaft core from the initial positioning station to the secondary positioning station, and the secondary positioning unit corrects the remainder of the OA shaft core located at the secondary positioning station The deflection angle is used to perform secondary positioning and measure the size of the first part of the OA shaft core; the station rotation unit rotates the OA shaft core from the secondary positioning station to the measuring station, and the dimension measuring unit measures the The second part of the dimension of the OA shaft core of the measuring station; and the station rotating unit rotates the OA shaft core from the measuring station to the blanking station, and the blanking unit will be located in the blanking station of the blanking station. The OA shaft core is cut and divided to distinguish the qualified OA shaft core from the unqualified OA shaft core.

In an embodiment of the present disclosure, the core supply unit, the initial positioning unit, the secondary positioning unit, the dimension measuring unit and the blanking unit operate synchronously.

In order to better understand the features of the present disclosure, the present disclosure will be further described below by taking preferred embodiments. However, it can be readily appreciated that the embodiments of the present disclosure provide many suitable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of specific ways to use the disclosure, and do not limit the scope of the claims of the disclosure.

The office automation (OA) shaft core dimension measuring device of the present disclosure is provided with a feeding station, an initial positioning station, a secondary positioning station, a measuring station and a blanking station. Preferably, a buffer station is also provided between the secondary positioning station and the measuring station; The measuring elements influence each other, and a buffer station can be added between the secondary positioning station and the measuring station for buffering, so as to solve the problems of space limitations during use. In other embodiments, the buffer station may not be provided. This disclosure document does not limit the number and specific positions of buffer stations, which can be flexibly set according to structural needs.

As shown in FIG. 1 , it is a schematic structural diagram of an embodiment of an OA shaft core dimension measuring apparatus of the present disclosure. The OA shaft core size measuring device 100 includes a base 10 , a station rotation unit 20 , a shaft core supply unit 30 , an initial positioning unit 40 , a secondary positioning unit 50 , a size measuring unit 60 and a blanking unit 70 . The base 10 is arranged at the bottom of the OA shaft core dimension measuring device 100 , and the station rotation unit 20 , the shaft core supply unit 30 , the initial positioning unit 40 , the secondary positioning unit 50 , the dimension measuring unit 60 and the blanking unit 70 are arranged. on the base 10. The shaft core supply unit 30 is located at the loading station, the initial positioning unit 40 is located at the initial positioning station, the secondary positioning unit 50 is located at the secondary positioning station, the dimension measuring unit 60 is located at the measuring station, and the unloading unit 70 is located at the bottom material station. The station rotation unit 20 drives the OA shaft to rotate between the stations.

As shown in FIG. 1 , in this embodiment, the bottom of the base 10 is a fixed base, and the fixed base is used to securely install the OA shaft core dimension measuring device 100 in a use place such as a laboratory or a production workshop. In other embodiments, the bottom of the base 10 can also be designed as a pulley, so that the user can move the OA shaft core size measuring device 100 to different places of use according to the needs of use.

In order to better illustrate the work flow of the OA shaft core dimension measuring apparatus 100 of the present disclosure, the description will now be made with reference to an OA shaft core to be measured. As shown in Fig. 2 and Fig. 3, they are a structural front view and a structural top view of an embodiment of the OA shaft core to be measured, respectively. In this embodiment, the size to be measured of the OA shaft core 200 to be measured has an inner hole Diameter Ød, taper γ, thickness H, shaft diameter ØD1, ØD2, ØD3, shaft length L1, L2, L3, position dimension (that is, the coordinate position formed by the measured hole Φd to AB, in this embodiment, the error is Φ0. 05. In other embodiments, the user can select the error value according to the production requirements, which is not limited by this disclosure) and the radial circular runout size (that is, in any measurement plane perpendicular to the reference axis, the radius is a tolerance value of 0.05 , and the area between two concentric circles A and B whose center is on the reference axis). Of course, in other embodiments, the present disclosure can also be used to measure OA shaft cores of other shapes or sizes, and the present disclosure document does not limit the shape or aspect of the OA shaft core to be measured.

Please refer to FIG. 4 , which is an enlarged schematic view of the structure of the station rotating unit 20 shown in FIG. 1 . The station rotating unit 20 includes a station turntable 21 and a transmission device 22 . The station turntable 21 is respectively provided with a first shaft core installation mechanism 211 , a second shaft core installation mechanism 212 , a third shaft core installation mechanism 213 , a fifth shaft core installation mechanism 215 and a sixth shaft core installation mechanism 216 . Preferably, a fourth shaft core installation mechanism 214 is further provided between the third shaft core installation mechanism 213 and the fifth shaft core installation mechanism 215 . The first axis mounting mechanism 211, the second axis mounting mechanism 212, the third axis mounting mechanism 213, the fourth axis mounting mechanism 214, the fifth axis mounting mechanism 215 and the sixth axis mounting mechanism 216 surround the work station The axes of the turntables 21 are uniformly distributed in sequence. When the first shaft core installation mechanism 211 of the station turntable 21 is located at the loading station of the OA shaft core size measuring device 100 , the second shaft core installation mechanism 212 , the third shaft core installation mechanism 213 , and the fourth shaft core installation mechanism The mechanism 214 , the fifth shaft core installation mechanism 215 and the sixth shaft core installation mechanism 216 are respectively located at the initial positioning station, the secondary positioning station, the buffer station, the measuring station and the blanking station. Each time the station turntable 21 rotates 60°, each shaft core installation mechanism enters the next station. In other embodiments, the number of the shaft core mounting mechanisms may not be limited to 6, and it is not necessarily evenly distributed, as long as the OA shaft core can be driven to rotate between the various stations.

Please continue to refer to FIG. 4, the transmission device 22 includes a first servo motor 221, a first reducer 222, a first coupling 223 and a first angular contact bearing seat 224. The first servo motor 221 passes through the first reducer 222, The first coupling 223 and the first angular contact bearing seat 224 are connected with the work station turntable 21 . The first servo motor 221 provides the rotational power source of the station turntable 21, the first reducer 222 is used to increase the torque of the transmission device 22 and ensure the rotation accuracy, the first coupling 223 is used to connect the power source and the output shaft, An angular contact bearing seat 224 is used to ensure the rotation accuracy of the station turntable 21 . Therefore, the transmission device 22 drives the station turntable 21 to rotate by a precise angle each time, so that each shaft core installation mechanism is in the feeding station, the initial positioning station, the secondary positioning station, the buffer station, the measuring station and the Rotation between blanking stations.

As shown in FIG. 5 , it is an enlarged schematic view of the structure of the shaft core supply unit 30 shown in FIG. 1 . The shaft core supply unit 30 is used to provide the OA shaft core 200 to be measured to the first shaft core installation mechanism 211 at the loading station, and to install the OA shaft core 200 to be measured on the first shaft core installation mechanism 211 .

In this embodiment, the shaft core supply unit 30 automatically supplies material, and provides one OA to be measured to the first shaft core installation mechanism 211 each time. After the OA shaft core 200 is installed, the transmission device 22 drives the station turntable 21 Rotate 60°, at this time, the first shaft core installation mechanism 211 rotates to the initial positioning position, the sixth shaft core installation mechanism 216 rotates to the feeding station, and at the same time, the shaft core supply unit 30 provides another OA shaft core 200 to be measured to The sixth shaft core mounting mechanism 216 .

As shown in FIG. 6 , it is an enlarged schematic view of the structure of the initial positioning unit 40 shown in FIG. 1 . The preliminary positioning unit 40 includes a preliminary positioning camera 41 and a four-claw rotation mechanism 42, and the preliminary positioning camera 41 is installed on the system support. The initial positioning unit 40 is used to correct the initial deflection angle α of the OA shaft core 200 located at the initial positioning station to perform initial positioning.

As shown in FIG. 7 , it is a schematic diagram of the structure of the four-claw rotating mechanism 42 . The four-claw rotating mechanism 42 includes a second servo motor 421 , a second coupling 422 , a second angular contact bearing seat 423 and a four-claw cylinder 424 . The second servo motor 421 is used to provide the rotational power source of the four-claw rotating mechanism 42. The second servo motor 421 is connected to the four-claw cylinder 424 through the second coupling 422 and the second angular contact bearing seat 423. The second angular contact bearing The seat 423 is used to ensure the rotation accuracy of the four-claw rotating mechanism 42, and the four-claw rotating mechanism 42 is used to clamp the OA shaft core 200 and to drive the OA shaft core 200 to rotate along the shaft center for initial positioning.

Preferably, the initial positioning unit 40 further includes a first adjustment structure for adjusting the precision or position of the four-claw rotating mechanism 42 . As shown in FIG. 8 , it is a schematic diagram of the first adjustment structure, including the first Z-axis fine-tuning slide 43 , the first Y-axis fine-tuning slide 44 , the first X-axis adjustment bolt 45 and the first Y-axis adjustment bolt 46 . The first Y-axis adjustment bolt 45 is disposed on the base flange of the first Y-axis fine adjustment slide 44 for making the rotation center line of the four-claw rotating mechanism 42 parallel to the axis of the OA shaft core 200 . The first Z-axis fine-tuning slide table 43 is used for installing the four-claw rotating mechanism 42 and for performing precise fine-tuning of the four-claw rotating mechanism 42 along the Z-axis direction. The first Y-axis fine-tuning slide table 44 is used to install the four-claw rotating mechanism 42 and is used for the four-claw rotating mechanism 42 to perform precise fine-tuning along the Y-axis direction. By adjusting the first Z-axis fine-tuning slide table 43 and the first Y-axis fine-tuning slide table 44 makes the rotation center of the four-claw cylinder 424 coaxial with the OA shaft core 200 at the initial positioning position. The first X-axis adjusting bolt 45 is arranged on the base of the first Y-axis fine-tuning slide 44, and is used to adjust the position of the four-claw rotating mechanism 42 in the X-axis direction, so that the clamping range of the four-claw rotating mechanism 42 is adjusted to OA One end of the shaft core 200 . It is worth noting that the X axis may refer to a horizontal axis parallel to the OA axis, the Y axis refers to a horizontal axis perpendicular to the OA axis, and the Z axis refers to a vertical axis perpendicular to the OA axis.

Before use, the initial positioning unit 40 needs to be adjusted as follows: (1) First, adjust the first Y-axis adjusting bolt 46 to make the rotation centerline of the four-claw rotating mechanism 42 and the rotation centerline of the OA shaft core 200 located at the initial positioning station (2) Then adjust the first Z-axis fine-tuning slide table 43 and the first Y-axis fine-tuning slide table 44 so that the rotation center of the four-claw cylinder 424 is coaxial with the OA shaft core 200 at the initial positioning station; (3) Final adjustment The first X-axis adjustment bolt 45 adjusts the clamping range of the four-claw rotation mechanism 42 to one end of the OA shaft core 200 .

Please refer to FIG. 6 and FIG. 9 together. As shown in FIG. 9, it is a schematic diagram of the deflection angle of the OA shaft core 200 at the initial positioning station. First, the initial positioning camera 41 takes a picture of one end of the OA shaft core 200 at the initial positioning station and calculates that the OA shaft core 200 has an initial deflection angle α, and the initial deflection angle α is a random value, and its range is 0°≤α≤90° . Then, the four-claw rotation mechanism 42 clamps the OA shaft core 200 to rotate for initial positioning; after the initial positioning, the initial positioning camera 41 takes a picture of the OA shaft core 200 for a second time and calculates the position of the OA shaft core 200 through the initial positioning operation. Correcting the angle β, at this time, the residual deflection angle of the OA shaft core 200 after the correction is α-β. The ideal residual deflection angle of the OA shaft core 200 is 0°, so the remaining deflection angle that the OA shaft core 200 needs to compensate for is α-β. In this embodiment, the user allows the measurement result to have an error of ±1°. In other embodiments, the user can also set other values of angle measurement error according to production needs, which is not limited in this disclosure.

Subsequently, the transmission device 22 drives the station turntable 21 to rotate 60°. At this time, the first shaft core installation mechanism 211 rotates to the secondary positioning station for secondary positioning and the first part size measurement; the sixth shaft core installation mechanism 216 rotates to the initial position. The positioning station performs initial positioning; the initial positioning steps of the sixth shaft core installation mechanism 216 in the initial positioning station are the same as the initial positioning steps of the first shaft core installation mechanism 211 in the initial positioning station, and will not be repeated here; The five-axis core mounting mechanism 215 rotates to the feeding station, and at the same time, the axis-core supply unit 30 provides the OA cores 200 to be measured to the fifth axis-core mounting mechanism 215 .

The secondary positioning unit 50 is used to correct the remaining deflection angle α-β of the OA shaft core 200 at the secondary positioning station, perform secondary positioning, and measure the size of the first part of the OA shaft core 200. In this embodiment, The first part dimensions include bore diameter Ød, taper γ and thickness H.

Please refer to Figure 10 to Figure 12 together. The secondary positioning unit 50 includes a secondary positioning camera 51 and a camera rotation mechanism 52 . The secondary positioning camera 51 includes a first area scan camera 511 and a second area scan camera 512 . The first area scan camera 511 is installed on the rotating bracket 525 for measuring the inner hole diameter Ød and taper Ød of the OA shaft core 200 , and the second area scan camera 512 is installed on the rotating frame 525 for measuring the thickness H of the OA shaft core 500 .

The camera rotation mechanism 52 includes a third servo motor 521 , a third reduction gear 522 , a third coupling 523 , a third angular contact bearing seat 524 and a rotating bracket 525 . The third servo motor 521 is used to provide a rotational power source for the secondary positioning camera 51 and the camera rotation mechanism 52. The third servo motor 521 is connected to the third reducer 522, the third coupling 523 and the third angular contact bearing seat 524 in turn. The rotating bracket 525 is connected. The third reducer 522 has high precision, can increase the torque and accurately adjust the remaining deflection angle α-β. The third angular contact bearing seat 524 can ensure the precision of the four-claw rotating mechanism.

Please continue to refer to FIG. 10 to FIG. 12 , preferably, the secondary positioning unit 50 further includes a second adjustment structure for adjusting the accuracy or position of the camera rotation mechanism 52 . The second adjusting structure includes a second Z-axis fine-tuning slide table 53 , a second Y-axis fine-tuning slide table 54 and a second Y-axis adjusting bolt 55 . The second Y-axis adjustment bolt 55 is disposed on the base flange of the second Y-axis fine adjustment slide 54 for making the rotation center line of the camera rotation mechanism 52 parallel to the axis of the OA shaft core 200 . The second Z-axis fine-tuning slide 53 is used for installing the camera rotation mechanism 52 and for performing precise fine-tuning of the camera rotation mechanism 52 along the Z-axis direction. The second Y-axis fine-tuning slide 54 is used to install the camera rotating mechanism 52 and is used for fine-tuning the camera rotating mechanism 52 along the Y-axis direction. By adjusting the second Z-axis fine-tuning slide 53 and the second Y-axis fine-tuning slide 54, the The rotation center of the camera rotation mechanism 52 is coaxial with the OA axis 200 located at the secondary positioning station.

Before use, the secondary positioning unit 50 needs to be adjusted as follows: (1) First, adjust the second Y-axis adjustment bolt 55 to make the rotation center line of the camera rotation mechanism 52 and the rotation center of the OA shaft core 200 located at the secondary positioning station (2) Then adjust the second Z-axis fine-tuning slide 53 and the second Y-axis fine-tuning slide 54 so that the rotation center of the camera rotation mechanism 52 is coaxial with the OA shaft core 200 at the secondary positioning station.

Please refer to FIGS. 10 to 12 together. The rotation centers of the first area scan camera 511 and the second area scan camera 512 of the camera rotation mechanism 52 are coaxial with the OA axis 200 located at the secondary positioning station. The area scan camera 511 and the second area scan camera 512 can be rotated along the rotation center; the OA axis 200 can be compensated for the remaining deflection angle α-β through the camera rotation mechanism 52 to achieve the purpose of secondary positioning, and then the first part of the size Measurement.

When performing secondary positioning, the camera rotation mechanism 52 drives the secondary positioning camera 51 to rotate continuously within the subdivision interval of the remaining deflection angle α-β, so that the secondary positioning camera 51 rotates multiple times within the subdivision interval of the remaining deflection angle α-β Taking pictures and calculating the error value, the error value is normally distributed, so as to realize the process of multiple measurement errors from large to small and then large. The position with the smallest error value is used as the best measurement position, and the photo closest to the ideal angle can be obtained. The numerical value of the error is represented by the roundness of the inner hole diameter Ød calculated by the first area scan camera 511 , the greater the roundness, the smaller the error, and vice versa, the greater the error.

In this embodiment, the camera rotation mechanism 52 rotates 0.1° each time to meet the measurement accuracy requirement, and rotates continuously for a maximum of 10 times, and then selects the position with the smallest error for measurement. The thickness of the end face of the OA shaft core 200 is explained: (1) The upper limit value of the actual size is H according to the tolerance; the deflection angle is e; Camera calibration size/actual size=cos(e×2π/360); (2) Camera calibration size = H×cos (e×2π/360); Actual size - camera calibration size ≤ measurement error range, when e=0.1°, it meets the measurement accuracy requirements.

Subsequently, the transmission device 22 drives the station turntable 21 to rotate by 60°. At this time, the first shaft core installation mechanism 211 rotates to the buffer station, and the sixth shaft core installation mechanism 216 rotates to the secondary positioning station for secondary positioning and the first part. Dimensional measurement, the secondary positioning and measurement steps of the sixth shaft core installation mechanism 216 in the secondary positioning are the same as the secondary positioning and measurement steps of the first shaft core installation mechanism 211 in the secondary positioning, and will not be repeated here; The five-axis core mounting mechanism 215 rotates to the initial positioning station for initial positioning. The preliminary positioning step of the fifth axis core mounting mechanism 215 at the preliminary positioning station is the same as the aforementioned initial positioning step of the first axis core mounting mechanism 211 at the preliminary positioning station. The same is not repeated here; the fourth shaft core installation mechanism 214 rotates to the loading station, and the shaft core supply unit 30 supplies the OA shaft core 200 to be measured to the fourth shaft core installation mechanism 214 at the same time.

Next, the transmission device 22 drives the station turntable 21 to rotate 60°, at this time the first shaft core mounting mechanism 211 rotates to the measuring station to measure the second part of the OA shaft core 200; at the same time, the sixth shaft core The installation mechanism 216 rotates to the buffer station, the fifth shaft core installation mechanism 215 rotates to the secondary positioning station for secondary positioning and the first part size measurement, and the fifth shaft core installation mechanism 215 is used for the secondary positioning and measurement of the secondary positioning The steps are the same as the secondary positioning and measurement steps in the secondary positioning of the first shaft core installation mechanism 211, and will not be repeated here; the fourth shaft core installation mechanism 214 is rotated to the initial positioning station for initial positioning, and the fourth shaft core The initial positioning steps of the installation mechanism 214 in the initial positioning station are the same as the initial positioning steps of the first shaft core installation mechanism 211 in the initial positioning station, and will not be repeated here; the third shaft core installation mechanism 213 rotates to the feeding station , while the shaft core supply unit 30 provides the OA shaft core 200 to be measured to the third shaft core installation mechanism 213 .

Please refer to FIG. 2 , FIG. 3 and FIG. 13 together. As shown in FIG. 13 , it is an enlarged schematic view of the structure of the dimension measuring unit 60 shown in FIG. 1 . The dimension measuring unit 60 is used for measuring the dimension of the second part of the OA shaft core 200 at the measuring station. The dimension measuring unit 60 includes a dimension measuring camera 61 and a camera driving mechanism 62 , the camera driving mechanism 62 is mounted on the system support, and the dimension measuring camera 61 is mounted on the camera driving mechanism 62 . The camera driving mechanism 62 includes a first electric cylinder 621 and a second electric cylinder 622 , and the dimension measuring camera 61 includes a first telecentric area scan camera 611 and a second telecentric area scan camera 612 . The first telecentric area scan camera 611 and the second telecentric area scan camera 612 are disposed just above the OA axis 200 of the measuring station. The camera driving mechanism 62 is used to drive the dimension measuring camera 61 to move along the X-axis direction, and more Specifically, the first electric cylinder 621 drives the first telecentric area scan camera 611 to move along the X-axis direction, and the second electric cylinder 622 drives the second telecentric area scan camera 612 to move along the X-axis direction to measure the position at the measurement station. The dimensions of the second part of the OA shaft core 200, such as: shaft lengths L1, L2, L3, shaft diameters ØD1, ØD2, ØD3, position size and circular runout size, etc.

More specifically, the initial distance of the first telecentric area scan camera 611 and the second telecentric area scan camera 612 is L0, and the first telecentric area scan camera 611 and the second telecentric area scan camera 612 are respectively moved to the position of the OA axis 200. Perform multiple photo-taking calculations at both ends to obtain the total length L1 of the OA shaft core 200, that is, the total length L1=the initial distance L0 of the first telecentric area array camera 611 and the second telecentric area array camera 612 + the first telecentric area array The sum of the moving distances of the camera 611 and the second telecentric area scan camera 612; correspondingly, other dimensions such as the diameter and length of the axes can also be calculated from the images.

Subsequently, the transmission device 22 drives the station turntable 21 to rotate by 60°, at this time the first shaft core installation mechanism 211 rotates to the blanking station to perform cutting and shunting of the OA shaft core 200; at the same time, the sixth shaft core installation mechanism 216 Rotate to the measuring station to measure the second part of the dimension of the OA shaft core 200. The measurement steps of the sixth shaft core installation mechanism 216 at the measurement station are the same as the measurement steps of the first shaft core installation mechanism 211 at the measurement station. The same, and will not be repeated here; the fifth shaft core installation mechanism 215 is rotated to the buffer station, the fourth shaft core installation mechanism 214 is rotated to the secondary positioning station for secondary positioning and the size measurement of the first part, and the fourth shaft core is installed. The secondary positioning and measurement steps of the mechanism 214 at the secondary positioning station are the same as the secondary positioning and measurement steps of the first shaft core installation mechanism 211 at the secondary positioning station, which will not be repeated here; the third shaft core installation The mechanism 213 is rotated to the initial positioning station for initial positioning. The initial positioning steps of the third shaft core installation mechanism 213 in the initial positioning station are the same as the initial positioning steps of the first shaft core installation mechanism 211 in the initial positioning station. The second shaft core installation mechanism 212 is rotated to the feeding station, and the shaft core supply unit 30 supplies the OA shaft core 200 to be measured to the second shaft core installation mechanism 212 , without further elaboration.

As shown in FIG. 14 , it is an enlarged schematic view of the structure of the unloading unit 70 shown in FIG. 1 . The unloading unit 70 is used for cutting and shunting the OA shaft core 200 located at the unloading station. According to the measurement results of the secondary positioning station and the measuring station, the blanking unit 70 is used to cut and divide the OA shaft core 200 located at the blanking station. Within the allowable range, the OA shaft core 200 is a qualified product. If the measurement result of at least one dimension of the OA shaft core 200 is not within the allowable error range, the OA shaft core 200 is an unqualified product, and the blanking unit 70 is qualified. Products and non-conforming products are stored separately.

Subsequently, the transmission device 22 drives the station turntable 21 to rotate by 60°, at this time the first shaft core mounting mechanism 211 rotates to the loading station, and at the same time the shaft core supply unit 30 provides the OA shaft core 200 to be measured to the second shaft core mounting mechanism 212; at the same time, the sixth shaft core installation mechanism 216 rotates to the blanking unit; the fifth shaft core installation mechanism 215 rotates to the measuring station to measure the second part of the OA shaft core 200, and the fifth shaft core installation mechanism The measurement steps of 215 at the measuring station are the same as those of the aforementioned first shaft core installation mechanism 211 at the measurement station, and will not be repeated here; the fourth shaft core installation mechanism 214 rotates to the buffer station, the third shaft The core mounting mechanism 213 is rotated to the secondary positioning station for secondary positioning and the first part size measurement. The secondary positioning and measurement steps of the third core mounting mechanism 213 in the secondary positioning station are the same as the aforementioned first core mounting mechanism 211 The secondary positioning and measurement steps in the secondary positioning station are the same, and will not be repeated here; the second shaft core installation mechanism 212 rotates to the initial positioning station for initial positioning, and the second shaft core installation mechanism 212 is in the initial positioning station. The initial positioning step is the same as the initial positioning step of the first shaft core mounting mechanism 211 in the initial positioning station, and will not be repeated here;

As shown in FIG. 15 , it is a flow chart of steps of an embodiment of a method for measuring the dimensions of an OA shaft core in the present disclosure. The OA shaft core size measurement method provided in this disclosure is applied to the above-mentioned OA shaft core size measurement device, and the OA shaft core size measurement method includes the following steps:

Step S1: the shaft core supply unit 30 provides the OA shaft core 200 to be measured to the shaft core installation mechanism located at the loading station;

Step S2: the station rotating unit 20 rotates the OA shaft core 200 from the feeding station to the initial positioning station, and the initial positioning unit 40 corrects the initial deflection angle α of the OA shaft core 200 located at the initial positioning station to perform initial positioning ;

Step S3: the station rotation unit 20 rotates the OA shaft core 200 from the initial positioning station to the secondary positioning station, and the secondary positioning unit 50 corrects the remaining deflection angle α-β of the OA shaft core 200 located at the secondary positioning station , to perform secondary positioning and measure the size of the first part of the OA shaft core 200;

Step S4: the station rotation unit 20 rotates the OA shaft core 200 from the secondary positioning station to the measurement station, and the size measurement unit 60 measures the size of the second part of the OA shaft core 200 located at the measurement station;

Step S5: the station rotating unit 20 rotates the OA shaft core 200 from the measuring station to the blanking station, and the blanking unit 70 performs cutting and shunting of the OA shaft core 200 located at the blanking station to distinguish qualified OA shafts cores and unqualified OA shaft cores.

In some embodiments, the shaft core supply unit 30 , the primary positioning unit 40 , the secondary positioning unit 50 , the dimension measuring unit 60 and the unloading unit 70 can operate synchronously. For example, in the process that the shaft core supply unit 30 provides the OA shaft core 200 to be measured to the shaft core installation mechanism located at the loading station, the initial positioning unit 40 can synchronously perform the initial positioning on the OA shaft core 200 located at the initial positioning station. Positioning, the secondary positioning unit 50 can simultaneously perform secondary positioning on the OA shaft core 200 located at the secondary positioning station and measure the size of the first part of the OA shaft core 200, and the size measuring unit 60 can simultaneously measure the OA shaft core 200 located at the measurement station. In the second part of the size of the OA shaft core 200, the blanking unit 70 can synchronously divide the OA shaft core 200 located at the blanking station for blanking and shunting, so as to improve the measurement efficiency.

In actual production, using the OA shaft core size measurement device and method provided in this disclosure, it only takes about 3s to complete the measurement of an OA shaft core, which is significantly faster than manual measurement.

To sum up, the OA shaft core dimension measuring device of the present disclosure has the following advantages: (1) Automate the size measurement of the OA shaft core, facilitate data management and analysis, realize intelligent detection, and realize multiple size measurements at one time, so as to realize dynamic analysis of the production status of the enterprise; (2) It can be used for long-term uninterrupted work, with high detection accuracy and efficiency, avoiding manual measurement errors; (3) Non-contact measurement to avoid abrasion or scratches on the OA shaft; (4) Ensure the integrity and consistency of product testing, avoid contingency caused by manual testing fatigue, have high reliability and save labor costs; (5) The initial positioning station and the secondary positioning station position the OA shaft core twice, which further improves the measurement accuracy of the device.

Of course, the present disclosure can also have various other embodiments. Those skilled in the art can make various corresponding changes and modifications according to the present disclosure without departing from the spirit and essence of the present disclosure. The changes and deformations shall belong to the protection scope defined by the patent scope attached to this disclosure document.

100: Office Automation (OA) Shaft Size Measuring Device 10: Pedestal 20: Station rotation unit 21: Station turntable 211: The first shaft core installation mechanism 212: Second shaft core installation mechanism 213: The third shaft core installation mechanism 214: Fourth shaft core installation mechanism 215: Fifth shaft core installation mechanism 216: The sixth shaft core installation mechanism 22: Transmission 221: The first servo motor 222: First reducer 223: First Coupling 224: The first angular contact bearing seat 30: Shaft supply unit 40: Initial positioning unit 41: Preliminary positioning camera 42: Four-claw rotating mechanism 421: Second Servo Motor 422: Second coupling 423: Second angular contact housing 424: Four-claw cylinder 43: The first Z-axis fine-tuning slide 44: The first Y-axis fine-tuning slide 45: The first X-axis adjustment bolt 46: The first Y-axis adjustment bolt 50: Secondary positioning unit 51: Secondary positioning camera 511: The first area scan camera 512: Second area scan camera 52: Camera rotation mechanism 521: Third Servo Motor 522: The third reducer 523: Third coupling 524: Third angular contact housing 525: Swivel bracket 53: Second Z-axis fine-tuning slide 54: Second Y-axis fine-tuning slide 55: Second Y-axis adjustment bolt 60: Dimensional measuring unit 61: Dimensional measurement camera 611: The first telecentric area scan camera 612: Second Telecentric Area Scan Camera 62: Camera drive mechanism 621: The first electric cylinder 622: The second electric cylinder 70: Blanking unit 200: Office Automation (OA) Axis Ød: Inner hole diameter γ: taper H: Thickness ØD1, ØD2, ØD3: Shaft diameter L1, L2, L3: Shaft length L0: initial distance α: Initial deflection angle β: Corrected angle α-β: residual deflection angle S1, S2, S3, S4, S5: Steps

Aspects of the present disclosure are best understood from the following detailed description when read in conjunction with the accompanying drawings. It should be noted that in accordance with standard practice in the industry, the various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or decreased for clarity of discussion. FIG. 1 is a schematic structural diagram of an embodiment of an apparatus for measuring the dimensions of a shaft core in an office automation (OA) document. FIG. 2 is a front view of the structure of an embodiment of the OA shaft core to be measured. FIG. 3 is a top view of the structure of an embodiment of the OA shaft core to be measured. FIG. 4 is an enlarged schematic view of the structure of the station rotating unit shown in FIG. 1 . FIG. 5 is an enlarged schematic view of the structure of the shaft core supply unit shown in FIG. 1 . FIG. 6 is an enlarged schematic view of the structure of the initial positioning unit shown in FIG. 1 . FIG. 7 is a schematic structural diagram of the four-claw rotating mechanism shown in FIG. 6 . FIG. 8 is a schematic diagram of the first adjustment structure. Figure 9 is a schematic diagram of the deflection angle of the OA shaft core at the initial positioning station. FIG. 10 is an enlarged schematic view of the structure of the secondary positioning unit shown in FIG. 1 . FIG. 11 is a left side view of the structure of the secondary positioning unit shown in FIG. 10 . FIG. 12 is a right side view of the structure of the secondary positioning unit shown in FIG. 10 . FIG. 13 is an enlarged schematic view of the structure of the dimension measuring unit shown in FIG. 1 . FIG. 14 is an enlarged schematic view of the structure of the blanking unit shown in FIG. 1 . FIG. 15 is a flow chart of steps of an embodiment of a method for measuring the dimension of an OA shaft core in the disclosed document.

Domestic storage information (please note in the order of storage institution, date and number) none Foreign deposit information (please note in the order of deposit country, institution, date and number) none

100: Office Automation Shaft Size Measuring Device

10: Pedestal

20: Station rotation unit

30: Shaft supply unit

40: Initial positioning unit

50: Secondary positioning unit

60: Dimensional measuring unit

70: Blanking unit

Claims (15)

An office automation shaft core size measuring device, comprising: A station rotation unit, including a station turntable and a transmission device, the transmission device is used to drive the station turntable to rotate, so that a plurality of shaft core installation mechanisms on the station turntable are sequentially a feeding station, a Rotation between the initial positioning station, the primary and secondary positioning stations, the first measuring station and the unloading station; a shaft core supply unit, used for providing an office automation shaft core to be measured to one of the shaft core installation mechanisms at the loading station, and the one of the shaft core installation mechanisms is used for installing the office automation shaft core; The initial positioning unit is used to correct an initial deflection angle of the office automation shaft core located at the initial positioning station to perform initial positioning; A secondary positioning unit for correcting a residual deflection angle of the office automation shaft located at the secondary positioning station, performing primary and secondary positioning, and for measuring a first part of the size of the office automation shaft; a sizing unit for measuring a second portion of the OA core at the measuring station; and The unloading unit is used for unloading and shunting the office automation shaft core located at the unloading station. The office automation shaft core size measuring device according to claim 1, wherein the shaft core installation mechanisms comprise a first shaft core installation mechanism, a second shaft core installation mechanism, a third shaft core installation mechanism, a first shaft core installation mechanism Five-axis core installation mechanism, a sixth-axis core installation mechanism; When the first shaft core installation mechanism is located at the loading station, the second shaft core installation mechanism, the third shaft core installation mechanism, the fifth shaft core installation mechanism and the sixth shaft core installation mechanism are respectively located at the The initial positioning station, the secondary positioning station, the measuring station and the blanking station. The device for measuring the dimensions of an office automation shaft core as claimed in claim 2, wherein the shaft core installation mechanisms further comprise a fourth shaft core installation mechanism, and when the first shaft core installation mechanism is located at the loading station, the The fourth shaft core installation mechanism is located in a buffer station, The first axle core mounting mechanism, the second axle core mounting mechanism, the third axle core mounting mechanism, the fourth axle core mounting mechanism, the fifth axle core mounting mechanism and the sixth axle core mounting mechanism surround the workpiece One axis of the bit turntable is evenly distributed in turn. The device for measuring the size of an office automation shaft core as claimed in claim 1, wherein the transmission device comprises a first servo motor, a first reducer, a first coupling and a first angular contact bearing seat, the first A servo motor provides a rotational power source, and is connected to the station turntable through the first reducer, the first coupling and the first angular contact bearing seat in sequence. The device for measuring the size of an office automation shaft core as claimed in claim 1, wherein the shaft core supply unit automatically supplies materials and provides the office automation shaft cores one at a time. The device for measuring the dimensions of an office automation shaft core according to claim 1, wherein the initial positioning unit comprises a preliminary positioning camera and a four-claw rotation mechanism, The initial positioning camera is installed on a system bracket, and is used for taking pictures to calculate the initial deflection angle of the office automation shaft. The four-claw rotation mechanism is used to clamp the office automation shaft and drive the office automation shaft along the A shaft is rotated to perform the initial positioning. After the initial positioning, the initial positioning camera takes a second picture to calculate the remaining deflection angle of the office automation shaft. The device for measuring the dimension of an office automation shaft as claimed in claim 6, wherein the four-claw rotating mechanism comprises a second servo motor, a second coupling, a second angular contact bearing seat and a four-claw cylinder, the The second servo motor provides a rotational power source and is connected with the four-claw cylinder through the second coupling and the second angular contact bearing seat. The device for measuring the dimensions of an office automation shaft core according to claim 7, wherein the initial positioning unit further comprises a first Z-axis fine-tuning slide, a first Y-axis fine-tuning slide, a first X-axis adjusting bolt and a The first Y-axis adjustment bolt, The first Y-axis adjusting bolt is arranged on a base rib of the first Y-axis fine-tuning sliding table, and is used to make a rotation centerline of the four-claw rotating mechanism parallel to an axis of the office automation shaft, The first Z-axis fine-tuning slide table is used to install the four-claw rotating mechanism, and is used for the four-claw rotating mechanism to perform a precise fine-tuning along the Z-axis direction, The first Y-axis fine-tuning slide table is used to install the four-claw rotating mechanism, and is used for the four-claw rotating mechanism to perform a precise fine-tuning along the Y-axis direction. By adjusting the first Z-axis fine-tuning slide and the first Y-axis fine-tuning The sliding table makes a rotation center of the four-claw cylinder coaxial with the office automation axis located at the initial positioning station, The first X-axis adjusting bolt is disposed on a base of the first Y-axis fine-tuning slide table, and is used to adjust a position of the four-claw rotating mechanism in the X-axis direction, so that a clamping range of the four-claw rotating mechanism can be achieved. Adjust to one end of the OA spindle. The device for measuring the dimensions of an office automation axis as claimed in claim 1, wherein the secondary positioning unit includes a secondary positioning camera and a camera rotation mechanism, and the camera rotation mechanism drives the secondary positioning camera to rotate, so that the secondary positioning camera is rotated. The positioning camera takes pictures and calculates multiple times within the subdivision interval of the remaining deflection angle, and obtains a picture closest to an ideal angle, so as to measure the axis of the office automation. The office automation shaft core dimension measuring device as claimed in claim 9, wherein the camera rotation mechanism comprises a third servo motor, a third reducer, a third coupling, a third angular contact bearing seat and a rotating a bracket, the secondary positioning camera includes a first area scan camera and a second area scan camera, The third servo motor is used to provide a rotating power source, and is connected to the rotating support through the third reducer, the third coupling and the third angular contact bearing seat in sequence, The first area scan camera is mounted on the rotating support for measuring an inner hole diameter and a taper dimension of the office automation shaft, and the second area scan camera is mounted on the rotating support for measuring the office automation axis A thickness dimension of the core. The device for measuring the dimensions of an office automation shaft core according to claim 9 or 10, wherein the secondary positioning unit further comprises a second Z-axis fine-tuning slide, a second Y-axis fine-tuning slide and a second Y-axis adjustment bolt, The second Y-axis adjustment bolt is disposed on a base rib of the second Y-axis fine-tuning slide, and is used to make a rotation centerline of the camera rotation mechanism parallel to an axis of the office automation shaft, The second Z-axis fine-tuning slide table is used for installing the camera rotation mechanism, and for the camera rotation mechanism to perform a precise fine-tuning along the Z-axis direction, The second Y-axis fine-tuning slide is used to install the camera rotation mechanism, and is used for the camera rotation mechanism to perform a precise fine-tuning along the Y-axis direction. By adjusting the second Z-axis fine-tuning slide and the second Y-axis fine-tuning slide A rotation center of the camera rotation mechanism is made coaxial with the office automation axis located at the secondary positioning station. The dimension measuring device for office automation as claimed in claim 1, wherein the dimension measuring unit comprises a dimension measuring camera and a camera driving mechanism, The camera driving mechanism is mounted on a system bracket, the dimension measuring camera is mounted on the camera driving mechanism, and the camera driving mechanism is used to drive the dimension measuring camera to move along the X-axis direction to measure the measurement station at the measuring station A length dimension, a shaft diameter dimension, a position dimension dimension and a circular runout dimension of the office automation shaft core. The dimension measuring device for office automation as claimed in claim 12, wherein the camera driving mechanism includes a first electric cylinder and a second electric cylinder, and the dimension measuring camera includes a first telecentric area scan camera and a first Two telecentric area scan cameras, The first telecentric area scan camera and the second telecentric area scan camera are disposed just above the OA axis at the measuring station, and the first electric cylinder drives the first telecentric area scan camera along the X-axis direction moving, the second electric cylinder drives the second telecentric area scan camera to move along the X-axis direction. A method for measuring the size of an office automation shaft, which is applied to the device for measuring the size of an office automation shaft according to any one of Claims 1 to 13, and the method for measuring the size of an office automation shaft comprises the following steps: A shaft core supply unit provides an office automation shaft core to be measured to a shaft core installation mechanism located at a feeding station; A station rotating unit rotates the OA shaft from the feeding station to the initial positioning station, and the initial positioning unit corrects an initial deflection angle of the OA shaft located at the initial positioning station to perform initial positioning; The station rotation unit rotates the office automation shaft from the initial positioning station to a secondary positioning station, and the secondary positioning unit corrects a residual deflection angle of the office automation shaft located at the secondary positioning station , to perform primary and secondary positioning, and to measure the dimensions of a first part of the OA shaft; The station rotating unit rotates the OA shaft from the secondary positioning station to a measuring station, and a dimension measuring unit measures the size of a second portion of the OA shaft located at the measuring station ;as well as The station rotating unit rotates the OA shaft core from the measuring station to the unloading station, and the unloading unit divides the OA shaft located at the unloading station to separate the at least one qualified Office automation mandrels and at least one substandard office automation mandrel. The method for measuring the dimensions of an office automation shaft core according to claim 14, wherein the shaft core supply unit, the initial positioning unit, the secondary positioning unit, the dimension measuring unit and the unloading unit operate synchronously.

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