An automatic detection device for torsion degree of aluminum profile

Abstract

The utility model relates to aluminium alloy section bar processing field especially relates to a kind of aluminium profile twist degree automatic detection device, including support frame, the top of support frame is fixed with detection table, the detection table is equipped with the strip detection port of the detection table, the periphery of the strip detection port is equipped with multiple load-bearing mechanism for carrying aluminium profile, the detection table is equipped with the positioning mechanism for the aluminium profile positioned on the load-bearing mechanism, the lower of the detection table is fixed with three-axis movement mechanism, displacement sensor is fixed on the output of three-axis movement mechanism, three-axis movement mechanism drives displacement sensor moves in the strip detection port range.The utility model has the beneficial effects that: improve the efficiency of aluminium profile twist degree detection, reduce the error of twist degree detection, reduce artificial labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy profile processing, and in particular to an automatic detection device for the torsion of aluminum profiles. Background Technology

[0002] Torque is a key quality indicator in the production and application of aluminum profiles. Aluminum profiles are widely used in many fields such as construction, transportation, and machinery manufacturing. Accurate testing of their torque is of paramount importance for ensuring product quality, guaranteeing structural safety, and meeting usage requirements.

[0003] However, in the field of aluminum profile torsion testing, the existing technology mainly adopts manual testing, which has many significant drawbacks and greatly limits the improvement of production efficiency and testing accuracy.

[0004] In the production process, aluminum profile output is typically high, requiring efficient operation to meet market demand. Manually inspecting torsion is slow due to its reliance on operator skills and experience, making it difficult to keep pace with the fast-paced production line and limiting efficiency. Operators need to use specialized measuring tools, such as feeler gauges, to place each aluminum profile individually on a measuring platform for measurement. This process is not only cumbersome but also time-consuming, hindering rapid, batch inspection of aluminum profiles and becoming a bottleneck in the production process.

[0005] Meanwhile, the accuracy of manual inspection is difficult to guarantee. The measurement process is easily affected by human factors, such as operator visual errors, inconsistent measurement techniques, and misinterpretation of measuring tool readings. These factors may lead to deviations in the test results, allowing some aluminum profiles that do not meet the torsion standards to enter the market, posing quality and safety hazards. In addition, manual inspection also suffers from high labor intensity, high labor costs, and high requirements for the professional skills of personnel. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an automatic detection device for the torsion of aluminum profiles, which improves the efficiency and accuracy of aluminum profile torsion detection and reduces the intensity of manual labor.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An automatic detection device for the torsion of aluminum profiles includes a support frame, a detection platform is fixedly provided on the top of the support frame, a strip-shaped detection port is provided on the detection platform, a plurality of supporting mechanisms for supporting aluminum profiles are provided around the strip-shaped detection port, a positioning mechanism for positioning the aluminum profiles placed on the supporting mechanisms is provided on the detection platform, a three-axis moving mechanism is fixedly provided below the detection platform, a displacement sensor is fixedly provided on the output end of the three-axis moving mechanism, and the three-axis moving mechanism drives the displacement sensor to move within the range of the strip-shaped detection port.

[0008] The beneficial effects of this utility model are: the staff places the aluminum profile to be tested on the bearing mechanism, positions the aluminum profile through the positioning mechanism, and then drives the displacement sensor through the three-axis moving mechanism to automatically detect the torsion of the aluminum profile, thereby improving the efficiency of aluminum profile torsion detection, reducing the error of torsion detection, and reducing the intensity of manual labor.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the bearing mechanism includes a level block, the level block is provided with a fixing hole, the detection platform is provided with a connection hole corresponding to the fixing hole, the connection hole is located next to the strip detection port, the fixing hole is provided with a bolt, and the bolt is threadedly connected to the connection hole.

[0011] The advantages of adopting the above-mentioned further solution are: the bearing mechanism adopts equal-height blocks, which are detachably fixed to the testing table by bolts, resulting in a simple structure and convenient installation.

[0012] Furthermore, the positioning mechanism includes a longitudinal positioning block and a plurality of transverse positioning blocks. The longitudinal positioning block is located at one end of the strip-shaped detection port, and the plurality of transverse positioning blocks are evenly arranged on one side of the strip-shaped detection port along its length.

[0013] The beneficial effects of adopting the above-mentioned further solution are: by positioning the two sides of the aluminum profile to be tested by the longitudinal positioning block and the transverse positioning block, it is ensured that the aluminum profile to be tested is within the detection range of the displacement sensor, and the detection position of the same type of aluminum profile is fixed, thereby improving the detection efficiency of the same type of aluminum profile.

[0014] Furthermore, the testing platform is equipped with an alignment mechanism for pushing the aluminum profile placed on the bearing mechanism to the positioning mechanism.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the alignment mechanism can automatically push the aluminum profile to be tested, which is placed on the bearing mechanism, to the positioning mechanism, thereby achieving rapid positioning of the aluminum profile to be tested.

[0016] Furthermore, the alignment mechanism includes a lateral alignment mechanism for pushing the aluminum profile to abut against the lateral positioning block, and a longitudinal alignment mechanism for pushing the aluminum profile to abut against the longitudinal positioning block.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the horizontal alignment mechanism matched with the horizontal positioning block and the vertical alignment mechanism matched with the vertical alignment mechanism can realize the rapid alignment of the aluminum profile to be inspected in the horizontal and vertical directions.

[0018] Furthermore, the lateral alignment mechanism includes multiple lateral linear pushing components, which are disposed on the side of the strip detection port away from the lateral positioning block. The multiple lateral linear pushing components are spaced apart along the length direction of the strip detection port. A lateral pushing block is fixedly provided on the output end of the lateral linear pushing component. The lateral linear pushing component drives the lateral pushing block to move linearly back and forth along the width direction of the strip detection port.

[0019] The beneficial effects of adopting the above-mentioned further solution are: multiple transverse linear pushing components drive the transverse pushing block to apply force to the side of the aluminum profile to be tested along the length direction, pushing the aluminum profile to be tested to move along the width direction of the strip detection port until it abuts the transverse positioning block, thereby realizing the transverse alignment of the aluminum profile to be tested. The operation is convenient and the alignment speed is fast.

[0020] Furthermore, the lateral linear pushing component is a linear motor, a pneumatic cylinder, or a hydraulic cylinder.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the transverse linear push component, which uses a linear motor, cylinder, or hydraulic cylinder, can achieve precise control of the moving distance.

[0022] Furthermore, the longitudinal alignment mechanism includes a longitudinal linear pushing component, which is fixedly mounted on the detection table. A longitudinal pushing block is fixedly mounted on the output end of the longitudinal linear pushing component, and the longitudinal linear pushing component drives the longitudinal pushing block to move linearly back and forth along the length direction of the strip detection port.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the longitudinal linear push component drives the longitudinal push block to move the aluminum profile to be tested towards the longitudinal positioning block until it abuts the longitudinal positioning block, thereby realizing the longitudinal rapid alignment of the aluminum profile to be tested.

[0024] Furthermore, the longitudinal linear pushing component is a lead screw guide mechanism extending along the length direction of the strip-shaped detection port, and the longitudinal pushing block is fixedly mounted on the output end of the lead screw guide mechanism.

[0025] The beneficial effects of adopting the above-mentioned further solution are: due to the long length of the aluminum profile, the use of a screw guide mechanism can increase the movement range of the longitudinal push block, making it suitable for the detection of different types of aluminum profiles.

[0026] Furthermore, the three-axis moving mechanism includes an X-axis moving module, a Y-axis moving module, and a Z-axis moving module. The X-axis moving module is fixed vertically below the detection platform, and the length direction of the X-axis moving module is the same as the length direction of the strip-shaped detection port. The Y-axis moving module is fixedly mounted on the moving end of the X-axis moving module, the Z-axis moving module is fixedly mounted on the moving end of the Y-axis moving module, and the displacement sensor is fixedly mounted on the moving end of the Z-axis moving module.

[0027] The beneficial effect of adopting the above-mentioned further solution is that by moving the X-axis moving module, the Y-axis moving module and the Z-axis moving module in the X-axis, Y-axis and Z-axis directions, it can be ensured that the displacement sensor can move freely within the detection range and can detect the torsion at different positions as needed. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is the right view of the present invention; Figure 3 This is a three-dimensional structural diagram of the three-axis moving mechanism in this utility model; Figure 4 This is a schematic diagram of the torsion detection method for aluminum profiles in this utility model; The attached diagram lists the components represented by each number as follows: 1. Support frame; 2. Inspection table; 3. Strip inspection port; 4. Three-axis moving mechanism; 41. X-axis moving module; 42. Y-axis moving module; 43. Z-axis moving module; 5. Displacement sensor; 6. Height block; 7. Bolt; 8. Longitudinal positioning block; 9. Lateral positioning block; 10. Lateral linear push assembly; 11. Lateral push block; 12. Screw guide mechanism; 13. Longitudinal push block; 14. Aluminum profile. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] like Figure 1 , Figure 2As shown, an embodiment of this utility model includes a support frame 1. A testing platform 2 is fixedly provided on the top of the support frame 1, and a plurality of support feet are evenly fixed on the bottom of the support frame 1. In order to facilitate the adjustment of the level of the testing platform 2 fixed on the top of the support frame 1, the support feet are height-adjustable support foot structures. For example, the support feet include a base, and the top end of the base is connected to the bottom end of the support frame 1 by a screw. By turning the screw, the distance between the base and the bottom end of the support frame 1 can be adjusted.

[0031] The testing platform 2 is provided with a strip-shaped testing port 3 that runs through the testing platform 2. Multiple supporting mechanisms for supporting aluminum profiles 14 are provided around the strip-shaped testing port 3. The testing platform 2 is provided with a positioning mechanism for positioning the aluminum profiles 14 placed on the supporting mechanisms. A three-axis moving mechanism 4 is fixedly provided below the testing platform 2. A displacement sensor 5 is fixedly provided on the output end of the three-axis moving mechanism 4. The three-axis moving mechanism 4 drives the displacement sensor 5 to move within the range of the strip-shaped testing port 3.

[0032] In an embodiment of this utility model, the supporting mechanism includes a height equalization block 6, which has a fixing hole. The detection table 2 has a connection hole corresponding to the fixing hole. The connection hole is located next to the strip-shaped detection port 3. A bolt 7 is provided in the fixing hole, and the bolt 7 is threadedly connected to the connection hole. The supporting mechanism uses height equalization blocks 6, and there are multiple height equalization blocks 6. The top surfaces of the multiple height equalization blocks 6 are coplanar, providing a positioning surface of equal height. The height equalization blocks 6 are detachably fixed to the detection table 2 by bolts 7. The structure is simple and the installation is convenient.

[0033] The positioning mechanism includes a longitudinal positioning block 8 and multiple transverse positioning blocks 9. The longitudinal positioning block 8 is located at one end of the strip-shaped detection port 3. The multiple transverse positioning blocks 9 are evenly arranged on one side of the strip-shaped detection port 3 along its length. To facilitate the installation, disassembly, and replacement of the longitudinal positioning block 8 and the transverse positioning blocks 9, both the longitudinal positioning block 8 and the transverse positioning blocks 9 are fixed to the detection table 2 by bolts 7. The longitudinal positioning block 8 and the transverse positioning blocks 9 are used to position the two sides of the aluminum profile 14 to be detected, ensuring that the aluminum profile 14 to be detected is within the detection range of the displacement sensor 5, and ensuring that the detection position of the same type of aluminum profile 14 is fixed, thereby improving the detection efficiency of the same type of aluminum profile 14.

[0034] In an embodiment of this utility model, the testing platform 2 is provided with an alignment mechanism for pushing the aluminum profile 14 placed on the support mechanism to the positioning mechanism. The alignment mechanism enables the automatic pushing of the aluminum profile 14 to be tested, placed on the support mechanism, to the positioning mechanism, thereby achieving rapid positioning of the aluminum profile 14 to be tested.

[0035] Specifically, the alignment mechanism includes a lateral alignment mechanism for pushing the aluminum profile 14 to abut against the lateral positioning block 9, and a longitudinal alignment mechanism for pushing the aluminum profile 14 to abut against the longitudinal positioning block 8. Through the lateral alignment mechanism that matches the lateral positioning block 9 and the longitudinal alignment mechanism that matches the longitudinal alignment mechanism, the aluminum profile 14 to be inspected is quickly aligned in the lateral and longitudinal directions.

[0036] In an embodiment of this utility model, the lateral alignment mechanism includes multiple lateral linear pushing components 10. The multiple lateral linear pushing components 10 are disposed on the side of the strip detection port 3 away from the lateral positioning block 9. The multiple lateral linear pushing components 10 are spaced apart along the length direction of the strip detection port 3. A lateral pushing block 11 is fixedly provided on the output end of the lateral linear pushing component 10. The lateral linear pushing component 10 drives the lateral pushing block 11 to move linearly back and forth along the width direction of the strip detection port 3. The multiple lateral linear pushing components 10 drive the lateral pushing block 11 to apply force to the side of the aluminum profile 14 to be tested along the length direction, pushing the aluminum profile 14 to be tested to move along the width direction of the strip detection port 3 until it abuts the lateral positioning block 9, thereby realizing the lateral alignment of the aluminum profile 14 to be tested. The operation is convenient and the alignment speed is fast.

[0037] It should be noted that the lateral linear push component 10 is a linear motor, a pneumatic cylinder, or a hydraulic cylinder. The lateral linear push component 10 adopts a linear motor, a pneumatic cylinder, or a hydraulic cylinder, which can achieve precise control of the moving distance.

[0038] In an embodiment of this utility model, the longitudinal alignment mechanism includes a longitudinal linear pushing component, which is fixedly mounted on the detection table 2. A longitudinal pushing block 13 is fixedly mounted on the output end of the longitudinal linear pushing component. The longitudinal linear pushing component drives the longitudinal pushing block 13 to move linearly back and forth along the length direction of the strip detection port 3. The longitudinal linear pushing component drives the longitudinal pushing block 13 to move the aluminum profile 14 to be detected towards the longitudinal positioning block 8 until it abuts against the longitudinal positioning block 8, thereby realizing the rapid longitudinal alignment of the aluminum profile 14 to be detected.

[0039] It should be noted that the longitudinal sub-line pushing assembly can also be a linear motor, a pneumatic cylinder, or a hydraulic cylinder. However, since the aluminum profile 14 is relatively long, a conventional linear motor, pneumatic cylinder, or hydraulic cylinder may not be able to meet the travel requirements of the longitudinal pushing block 13. The longitudinal sub-line pushing assembly preferably adopts a screw guide mechanism 12 that extends along the length direction of the strip detection port 3, and the longitudinal pushing block 13 is fixedly mounted on the output end of the screw guide mechanism 12.

[0040] Specifically, the longitudinal sub-line pushing assembly includes a guide rail extending along the length direction of the strip detection port 3 and a lead screw. The lead screw is rotatably disposed beside the guide rail, and one end of the lead screw is connected to the output end of a servo motor. A sliding seat is slidably disposed on the guide rail, and the sliding seat is threadedly connected to the lead screw. The servo motor drives the lead screw to rotate axially, thereby driving the sliding seat to slide along the length direction of the guide rail.

[0041] In an embodiment of this utility model, the longitudinal pushing block 13 is fixedly mounted on the sliding seat. The longitudinal pushing block 13 preferably adopts a long strip-shaped structure, with one end fixedly connected to the sliding seat and the other end extending vertically above the strip-shaped detection port 3.

[0042] like Figure 3 As shown in the embodiment of this utility model, the three-axis moving mechanism 4 includes an X-axis moving module 41, a Y-axis moving module 42, and a Z-axis moving module 43. The X-axis moving module 41 is fixed vertically below the detection platform 2, and the length direction of the X-axis moving module 41 is the same as the length direction of the strip-shaped detection port 3. The Y-axis moving module 42 is fixedly mounted on the moving end of the X-axis moving module 41, and the Z-axis moving module 43 is fixedly mounted on the moving end of the Y-axis moving module 42. The displacement sensor 5 is fixedly mounted on the moving end of the Z-axis moving module 43. By moving the X-axis moving module 41, the Y-axis moving module 42, and the Z-axis moving module 43 in the X-axis, Y-axis, and Z-axis directions, it can be ensured that the displacement sensor 5 can move freely within the detection range and can detect the torsion at different positions as needed.

[0043] In embodiments of this utility model, a PLC controller is also included. The PLC controller is connected to the X-axis moving module 41, the Y-axis moving module 42, the Z-axis moving module 43, the transverse linear push assembly 10, and the longitudinal linear push assembly via control lines or wireless signals. It is used to control the pneumatic operation, closing, and movement distance of the above-mentioned mechanisms. The PLC controller is also used to acquire displacement signals collected by displacement sensors.

[0044] Working principle: Select the aluminum profile 14 to be tested and place it on multiple equal-height blocks 6. Activate the horizontal linear pushing component 10 and the vertical linear pushing component to move the aluminum profile 14 in the horizontal and vertical directions, respectively, so that it abuts against the horizontal positioning block 9 and the vertical positioning block 8, thus achieving positioning of the aluminum profile 14. The PLC controller generates a detection path based on the model of the aluminum profile 14 and controls the X-axis moving module 41, Y-axis moving module 42, and Z-axis moving module 43 to move the displacement sensor 5 upward to contact the bottom surface of the aluminum profile 14, collecting local deformation data. The displacement is converted into a torsion value through a coordinate transformation algorithm. Specifically... Figure 4 As shown, displacement sensor 5 is used to collect the displacement of preset detection points on the bottom surface of the profile. By measuring the coordinate deviation between the maximum deformation point T1 and the minimum deformation point T2 in the positioning length direction, the twist value of the profile is calculated based on the extreme value difference. The twist value is T2-T1.

[0045] The beneficial effects of this utility model are as follows: the staff places the aluminum profile 14 to be tested on the bearing mechanism, and positions the aluminum profile 14 through the positioning mechanism. Then, the three-axis moving mechanism 4 drives the displacement sensor 5 to automatically detect the torsion of the aluminum profile 14, which improves the efficiency of the torsion detection of the aluminum profile 14 by more than 300% (the traditional method takes about 2 minutes per piece, while this device can shorten it to within 20 seconds), reduces the error of the torsion detection, and the measurement accuracy reaches ±0.01mm, which is better than the industry standard, and reduces the intensity of manual labor.

[0046] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic detection device for the torsion of aluminum profiles, characterized in that, The system includes a support frame (1), a testing platform (2) is fixedly provided on the top of the support frame (1), a strip-shaped testing port (3) is provided on the testing platform (2), a plurality of supporting mechanisms for supporting aluminum profiles (14) are provided around the strip-shaped testing port (3), a positioning mechanism for positioning the aluminum profiles (14) placed on the supporting mechanism is provided on the testing platform (2), a three-axis moving mechanism (4) is fixedly provided below the testing platform (2), a displacement sensor (5) is fixedly provided on the output end of the three-axis moving mechanism (4), and the three-axis moving mechanism (4) drives the displacement sensor (5) to move within the range of the strip-shaped testing port (3).

2. The automatic detection device for the torsion of aluminum profiles according to claim 1, characterized in that, The bearing mechanism includes a level block (6), the level block (6) is provided with a fixing hole, the detection platform (2) is provided with a connection hole corresponding to the fixing hole, the connection hole is located next to the strip detection port (3), the fixing hole is provided with a bolt (7), and the bolt (7) is threadedly connected to the connection hole.

3. The automatic detection device for the torsion of aluminum profiles according to claim 1, characterized in that, The positioning mechanism includes a longitudinal positioning block (8) and a plurality of transverse positioning blocks (9). The longitudinal positioning block (8) is located at one end of the strip detection port (3), and the plurality of transverse positioning blocks (9) are evenly arranged on one side of the strip detection port (3) along its length.

4. The automatic detection device for the torsion of aluminum profiles according to claim 3, characterized in that, The testing platform (2) is equipped with an alignment mechanism for pushing the aluminum profile (14) placed on the bearing mechanism to the positioning mechanism.

5. The automatic detection device for the torsion of aluminum profiles according to claim 4, characterized in that, The alignment mechanism includes a lateral alignment mechanism for pushing the aluminum profile (14) to abut against the lateral positioning block (9), and a longitudinal alignment mechanism for pushing the aluminum profile (14) to abut against the longitudinal positioning block (8).

6. The automatic detection device for the torsion of aluminum profiles according to claim 5, characterized in that, The lateral alignment mechanism includes multiple lateral linear pushing components (10). The multiple lateral linear pushing components (10) are located on the side of the strip detection port (3) away from the lateral positioning block (9). The multiple lateral linear pushing components (10) are spaced apart along the length direction of the strip detection port (3). A lateral pushing block (11) is fixedly provided on the output end of the lateral linear pushing component (10). The lateral linear pushing component (10) drives the lateral pushing block (11) to move linearly back and forth along the width direction of the strip detection port (3).

7. The automatic detection device for the torsion of aluminum profiles according to claim 6, characterized in that, The transverse linear push assembly (10) is a linear motor, a pneumatic cylinder, or a hydraulic cylinder.

8. The automatic detection device for the torsion of aluminum profiles according to claim 5, characterized in that, The longitudinal alignment mechanism includes a longitudinal linear push component, which is fixedly mounted on the detection table (2). A longitudinal push block (13) is fixedly mounted on the output end of the longitudinal linear push component. The longitudinal linear push component drives the longitudinal push block (13) to move linearly back and forth along the length direction of the strip detection port (3).

9. The automatic detection device for the torsion of aluminum profiles according to claim 8, characterized in that, The longitudinal linear push component is a screw guide mechanism (12) extending along the length direction of the strip detection port (3), and the longitudinal push block (13) is fixedly mounted on the output end of the screw guide mechanism (12).

10. An automatic detection device for the torsion of aluminum profiles according to any one of claims 1 to 9, characterized in that, The three-axis moving mechanism (4) includes an X-axis moving module (41), a Y-axis moving module (42), and a Z-axis moving module (43). The X-axis moving module (41) is fixed vertically below the detection platform (2). The length direction of the X-axis moving module (41) is the same as the length direction of the strip-shaped detection port (3). The Y-axis moving module (42) is fixed on the moving end of the X-axis moving module (41). The Z-axis moving module (43) is fixed on the moving end of the Y-axis moving module (42). The displacement sensor (5) is fixed on the moving end of the Z-axis moving module (43).

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