Bent arm position degree detection tool

Abstract

The utility model discloses a bent arm position degree detection tool, belongs to the field of dimension detection, and aims to improve the detection efficiency and precision. A base is included; the first supporting table is matched with a lower vehicle body support, the second supporting table is matched with an upper vehicle body support, the third supporting table is matched with a lower vehicle door support, and the fourth supporting table is matched with an upper vehicle door support. The pedestal is provided with a first detection seat used for detecting the first connecting rod, a second detection seat used for detecting the lower support of the vehicle door, and a third detection seat used for detecting the upper support of the vehicle door. The detection reference point of the bent arm assembly is determined, and during detection, the detection reference point is transferred to the main reference hole and the secondary reference hole of the tool from the mounting holes of the vehicle body lower support and the vehicle body upper support, so that all bent arm assemblies detected by the detection tool have the same detection reference point, the detection consistency is ensured, and the detection efficiency is improved. Therefore, the detection accuracy is ensured. All position degree detection of the bent arm assembly can be completed through one-time positioning, operation is convenient, and detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the size detection field, specifically is a kind of elbow position degree detection frock. BACKGROUND

[0002] The middle door elbow assembly of passenger car is one of the key components in the passenger car door system, mainly used for connecting the door and the vehicle body, supporting the opening and closing movement of the door, and ensuring the stability and safety of the door during operation. Figure 1 Disclose a kind of middle door elbow assembly of passenger car, including lower elbow 101, upper elbow 102, connecting rod one 103 and connecting rod two 104;Lower elbow 101 is close to the end of vehicle body and the end of upper elbow 102 close to vehicle body is connected by connecting rod one 103;The bottom end of connecting rod one 103 is connected with vehicle body lower support 105, and top end is connected with vehicle body upper support 106;Lower elbow 101 is close to the end of door and is fixed with door lower support 107;Upper elbow 102 is close to the end of door and is fixed with door upper support 108.The design and manufacture of the elbow assembly need to ensure the accuracy of its placement position and movement trajectory, to ensure that the door opens and closes smoothly and seals well.Therefore, the position degree of elbow assembly needs to be detected after manufacturing, and can be installed and used after passing.

[0003] At present, the position degree detection of the middle door elbow of passenger car is as follows:

[0004] First, the detection reference point or reference surface of elbow is determined.In this process, usually select a certain fixed hole position or processing surface on elbow as reference, use scribing platform, height gauge or dial gauge to carry out reference positioning;Then, use pin or plug gauge to detect whether the hole position on elbow meets the design requirement;Use go-no-go gauge to detect whether the thickness or width of elbow meets the requirement.

[0005] The detection method has the following problems when detecting the position degree of the disclosed middle door elbow assembly of passenger car: Figure 1 Firstly,

[0006] The disclosed middle door elbow assembly of passenger car is a large overall component, and it is inconvenient to use conventional scribing platform, height gauge and other tools for reference positioning operation, the process is more, the human error is large, it is difficult to accurately position the reference, thereby affecting the detection accuracy. Figure 1 Secondly, it is tedious and inefficient to measure each hole position and each size.

[0007] The utility model discloses a kind of elbow position degree detection frock, improve detection efficiency and accuracy. UTILITY MODEL CONTENTS

[0008] The utility model aims at providing a kind of elbow position degree detection frock, improve detection efficiency and accuracy.

[0009] The utility model discloses a technical scheme is: the position degree detection frock of bending arm, including base, on the base, according to the theoretical size of bending arm assembly, there is the support table one of adapting with the lower support of car body, the support table two of adapting with the upper support of car body, the support table three of adapting with the lower support of door and the support table four of adapting with the upper support of door,

[0010] The main reference hole that is adapted with the mounting hole on the lower support of car body is set up on the support table one, and is equipped with the main positioning pin that is adapted with the main reference hole,

[0011] The secondary reference hole that is adapted with the mounting hole on the upper support of car body is set up on the support table two, and is equipped with the secondary positioning pin that is adapted with the secondary reference hole,

[0012] The detection hole one that is adapted with the mounting hole on the lower support of door is set up on the support table three, and is equipped with the position pin one that is adapted with the detection hole one,

[0013] The detection hole two that is adapted with the mounting hole on the upper support of door is set up on the support table four, and is equipped with the position pin two that is adapted with the detection hole two,

[0014] The detection seat one for detecting connecting rod one, the detection seat two for detecting the lower support of door and the detection seat three for detecting the upper support of door are set up on the base,

[0015] The top of detection seat one, detection seat two and detection seat three all is provided with vertical vertical detection surface and horizontal horizontal detection surface, and the vertical detection surface and horizontal detection surface enclose L-shaped detection area.

[0016] Further, the detection seat one is provided with two, and is left detection seat one and right detection seat one arranged along the theoretical extension direction of connecting rod one.

[0017] Further, the base is provided with quick clamp one, quick clamp two and quick clamp three,

[0018] The quick clamp one is located in the side of support table one, and the lower support of car body is positioned in the back of support table one, and the pressure head of quick clamp one is opposite to the lower support of car body and clamps the lower support of car body,

[0019] The quick clamp two is located in the side of support table two, and the upper support of car body is positioned in the back of support table two, and the pressure head of quick clamp two is opposite to support table two and clamps the upper support of car body,

[0020] The quick clamp three is located in the side of support table four, and the upper support of door is positioned on support table four, and the pressure head of quick clamp three is downward and top abuts the side of the upper support of door.

[0021] Further, the first, second and third fast clamps each comprise a supporting leg, a rotating arm and a pressing shaft, the rotating arm is cantilevered mounted on the top of the supporting leg and is rotatably connected with the supporting leg, and the pressing shaft is perpendicularly mounted on the cantilevered end of the rotating arm, and the bottom end of the pressing shaft is a pressing head.

[0022] Further, supporting plates are fixedly arranged on the side of the base near the supporting table one and the side of the base near the supporting table two, and the bottom ends of the supporting legs of the first and second fast clamps are supported on the corresponding supporting plates; and the bottom ends of the supporting legs of the third fast clamp are supported on the top surface of the base.

[0023] Further, the base comprises a square frame surrounded by square steel pipes and a platform plate arranged on the top surface of the square frame.

[0024] The bending arm position degree detection tool has the advantages that the main positioning pin and the main reference hole are used for positioning the lower support of the vehicle body, the secondary positioning pin and the secondary reference hole are used for positioning the upper support of the vehicle body, the detection reference point of the bending arm assembly is determined, the detection reference point is transferred from the mounting holes of the lower support of the vehicle body and the upper support of the vehicle body to the main reference hole and the secondary reference hole of the tool during detection, all the bending arm assemblies detected by the detection tool have the same detection reference point, the detection consistency is ensured, and thus the detection accuracy is ensured.

[0025] During detection, the bending arm assembly is first fixed to the detection tool, and then the position degree is detected, so that the bending arm assembly can be positioned and all the position degree detection of the bending arm assembly can be completed, the operation is convenient, and the detection efficiency is improved.

[0026] The detection is performed by the cooperation of the pin and the plug gauge, manual size measurement is not needed, human error is reduced, and the detection precision and the detection efficiency are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 1 is a schematic view of a bending arm assembly;

[0028] Figure 2 FIG. 4 is a structural schematic view of the bending arm position degree detection tool disclosed by the utility model;

[0029] Figure 3 FIG. 5 is a structural schematic view of the bending arm position degree detection of the bending arm assembly by using the bending arm position degree detection tool;

[0030] Figure 4 FIG. 6 is a position degree detection schematic view of the connecting rod one;

[0031] Figure 5 FIG. 7 is a position degree detection schematic view of the lower support of the vehicle door;

[0032] Figure 6This is a schematic diagram for the positional accuracy testing of the round shaft head of the door support.

[0033] Figure 7 This is a schematic diagram for detecting the positional accuracy of the connecting seat of the support on the car door.

[0034] In the diagram, the components are: 1. Bending arm assembly; 101. Lower bending arm; 102. Upper bending arm; 103. Connecting rod one; 104. Connecting rod two; 105. Lower body support; 106. Upper body support; 107. Lower door support; 108. Upper door support; 2. Base; 2. Square frame; 201. Platform plate; 202. Quick clamp one; 3. Quick clamp two; 4. Quick clamp three; 5. Outrigger; 501. Swing arm; 502. Pressure shaft; 503. Support plate; 504. Support platform one; 6. Support platform two; 7. Support... 8. Support platform 3, 9. Support platform 4, 10. Detection seat 1, 11. Detection seat 2, 12. Detection seat 3, 12. Vertical detection surface, 12. Horizontal detection surface, 12. Main reference hole, 13. Main positioning pin, 14. Secondary reference hole, 15. Secondary positioning pin, 16. Detection hole 1, 17. Position pin 1, 18. Detection hole 2, 19. Position pin 2, 20. Gap 1, 21. Gap 2, 22. Gap 3, 23. Gap 4, 24. Gap 5, 25. Gap 6, 26. Gap 7, 27. Gap 8, 28. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0036] like Figure 1 The curved arm assembly 1 shown includes a lower curved arm 101, an upper curved arm 102, a first connecting rod 103, and a second connecting rod 104. The lower curved arm 101 and the upper curved arm 102 near the vehicle body are connected by the first connecting rod 103; the bottom end of the first connecting rod 103 is connected to a lower vehicle body support 105, and the top end is connected to a upper vehicle body support 106; the lower curved arm 101 near the door is fixed to a lower door support 107; and the upper curved arm 102 near the door is fixed to an upper door support 108.

[0037] When installed in the middle door of a bus, the lower support 105 is fixed to the bottom of the bus body at the middle door location using bolts and other connecting components, while the upper support 106 is fixed to the upper part of the bus body at the middle door location using bolts and other connecting components. The bottom end of the connecting rod 103 is rotatably connected to the lower support 105, and the top end is rotatably connected to the upper support 106. After the lower support 105 and the upper support 106 are fixed to the bus body, the connecting rod 103 can rotate around its own axis. Therefore, it is necessary to check the position of the connecting rod 103 to ensure that after the curved arm assembly 1 is installed in the middle door of the bus, there is sufficient clearance between the connecting rod 103 and the bus body to meet its own rotation requirements.

[0038] The lower door support 107 is a shaft structure, the upper part of the shaft is a connecting seat similar to Ω, the shaft is in rotational cooperation with the connecting seat, the end of the upper bending arm 102 is welded to the side wall of the shaft, and the connecting seat is fixed to the top of the door through a bolt or the like connecting piece. When the connecting seat of the lower door support 107 is fixed to the door, the shaft of the lower door support 107 can rotate around its own axis. Therefore, the position degree of the shaft of the lower door support 107 needs to be detected, so that after the lower door support 107 is installed to the middle door of the passenger car, there is enough gap between the shaft of the lower door support 107 and the door to meet the rotation requirement of the shaft. Meanwhile, the mounting hole on the connecting seat of the lower door support 107 also needs to be detected, so that the mounting hole can be centered with the corresponding mounting hole on the door to meet the installation requirement.

[0039] The upper door support 108 is composed of two parts, one part is an L-shaped mounting seat, and the other part is a round shaft head, the top end of the round shaft head is rotatably connected to the top plate of the mounting seat. During installation, the side plate of the mounting seat is fixed to the mounting table in the middle of the door through a connecting bolt or the like connecting piece. In order to smoothly realize the installation of the mounting seat, the mounting hole on the mounting seat of the upper door support 108 needs to be detected, so that the mounting hole can be centered with the corresponding mounting hole on the door; the gap of the mounting seat of the upper door support 108 also needs to be detected, so that the mounting seat can be centered with the mounting table on the door for installation; and the position degree of the round shaft head of the upper door support 108 also needs to be detected, so that after the upper door support 108 is installed to the door, the center of rotation of the door is on the round shaft head of the upper door support 108 and the axis of the lower door support 107, so that the posture of the door is stable.

[0040] The utility model provides a kind of bending arm position degree detection tool, as shown in Figure 2 It is shown in the drawings that the utility model discloses a kind of bending arm position degree detection tool, as shown in

[0041] The support table one 6 matched with the body lower support 105 is used to simulate the installation position of the body lower support 105 at the middle door of the passenger car, the support table two 7 matched with the body upper support 106 is used to simulate the installation position of the body lower support 105 at the middle door of the passenger car, and the support table three 8 and the support table four 9 are the same.

[0042] The support table one 6 is provided with a main reference hole 13 matched with the mounting hole on the lower body support 105, and is provided with a main positioning pin 14 matched with the main reference hole 13. The support table one 6 is used for supporting the lower body support 105. After the lower body support 105 is placed on the support table one 6, the main positioning pin 14 is inserted into the mounting hole of the lower body support 105 and the main reference hole 13 on the support table one 6 to position.

[0043] Similarly, the support table two 7 is provided with a secondary reference hole 15 matched with the mounting hole on the upper body support 106, and is provided with a secondary positioning pin 16 matched with the secondary reference hole 15.

[0044] The support table three 8 is provided with a detection hole one 17 matched with the mounting hole on the lower door support 107, and is provided with a position pin one 18 matched with the detection hole one 17.

[0045] The support table four 9 is provided with a detection hole two 19 matched with the mounting hole on the upper door support 108, and is provided with a position pin two 20 matched with the detection hole two 19.

[0046] The base 2 is provided with a detection seat one 10 for detecting the connecting rod one 103, a detection seat two 11 for detecting the lower door support 107, and a detection seat three 12 for detecting the upper door support 108.

[0047] The top end of the detection seat one 10, the detection seat two 11 and the detection seat three 12 are provided with a vertical detection surface 121 and a horizontal detection surface 122, and the vertical detection surface 121 and the horizontal detection surface 122 form an L-shaped detection area.

[0048] The main positioning pin 14 and the main reference hole 13 are used for positioning the lower body support 105, and the secondary positioning pin 16 and the secondary reference hole 15 are used for positioning the upper body support 106, so as to determine the detection reference point of the arm bending assembly 1, that is, the main reference hole 13 and the secondary reference hole 15 on the tooling are used as the detection reference point. The traditional installation hole of the arm bending assembly 1 is used as the detection reference, which is converted into the main reference hole 13 and the secondary reference hole 15 of the tooling as the reference point, so that all the arm bending assemblies detected by the detection tooling have the same detection reference point, which ensures the consistency of the detection, thereby ensuring the accuracy of the detection.

[0049] Since each connecting rod 103 has a certain length, the more detection points, the higher the detection accuracy; however, the more detection points, the longer the detection time. In order to balance the detection accuracy and save the detection time, preferably, the detection seat 10 is provided with two, respectively, the left detection seat 10B and the right detection seat 10B arranged along the theoretical extension direction of the connecting rod 103. The theoretical extension direction of the connecting rod 103 refers to the extension direction of the connecting rod 103 of the elbow assembly 1 in the theoretical design state. The left detection seat 10B detects on the left side of the connecting rod 103, and the right detection seat 10B detects on the right side of the connecting rod 103. The two detection points have higher detection accuracy than one detection point, and the time consumed is not too long.

[0050] In order to stably install the elbow assembly 1 to be detected in place and avoid position change during the detection process, in the embodiment, the base 2 is provided with a quick clamp 3, a quick clamp 4 and a quick clamp 5; the quick clamp 3 is located beside the support table 6, the vehicle body lower support 105 is positioned behind the support table 6, the pressure head of the quick clamp 3 is opposite to the vehicle body lower support 105 to clamp the vehicle body lower support 105; the quick clamp 4 is located beside the support table 7, the vehicle body upper support 106 is positioned behind the support table 7, the pressure head of the quick clamp 4 is opposite to the support table 7 to clamp the vehicle body upper support 106;

[0051] Since the gap between the L-shaped mounting seat of the vehicle door upper support 108 and the support table 4 9 needs to be detected, the L-shaped mounting seat of the vehicle door upper support 108 cannot be directly placed on the support table 4 9. In the embodiment, the quick clamp 5 is located beside the support table 4 9, and the pressure head of the quick clamp 5 downwardly abuts against the side surface of the vehicle door upper support 108 after the vehicle door upper support 108 is positioned on the support table 4 9. After the elbow assembly 1 is horizontally placed on the detection tool, the quick clamp 5 only limits the mounting seat of the vehicle door upper support 108 at the top, so as to avoid the position change of the elbow assembly 1 after the plug is inserted into the gap between the L-shaped mounting seat of the vehicle door upper support 108 and the support table 4 9, thereby affecting the detection accuracy.

[0052] The hydraulic cylinder can be vertically arranged as a clamp, and the corresponding components of the elbow assembly 1 are pressed downwardly by the piston rod end of the hydraulic cylinder. In the embodiment, the quick clamp 3, the quick clamp 4 and the quick clamp 5 each include a support leg 501, a rotating arm 502 and a pressing shaft 503. The rotating arm 502 is cantilevered installed on the top of the support leg 501 and is rotationally connected with the support leg 501. The pressing shaft 503 is vertically installed on the cantilevered end of the rotating arm 502, and the bottom end of the pressing shaft 503 is a pressure head. The clamp with the above structure makes the pressure head of the pressing shaft 503 press the corresponding components of the elbow assembly 1 by forward rotation of the rotating arm 502, and the pressure head of the pressing shaft 503 is withdrawn by reverse rotation of the rotating arm 502.

[0053] For a reasonable layout, support plates 504 are fixedly distributed on the side of the base 2 near support platform 6 and the side near support platform 7. The bottom ends of the legs 501 of quick clamp 3 and quick clamp 4 are supported on the corresponding support plates 504; the bottom ends of the legs 501 of quick clamp 3 are supported on the top surface of the base 2.

[0054] To ensure the supporting strength of the base 2 while reducing the overall neutrality of the device, preferably, the base 2 includes a square frame 201 formed by square steel tubes and a platform plate 202 laid on the top surface of the square frame 201.

[0055] The method for detecting the position of a boom using a boom position detection fixture includes the following steps:

[0056] Step 1, such as Figure 3 As shown, gently place the arm assembly 1 to be inspected on the arm position detection fixture, adjust the corresponding hole positions, so that the lower support 105 of the vehicle body is completely in contact with the support platform 1 6; the upper support 106 of the vehicle body is completely in contact with the support platform 2 7; and the lower support 107 of the door is completely in contact with the support platform 3 8.

[0057] Step 2: Insert the main positioning pin 14 into the main reference hole 13, insert the secondary reference hole 15 into the secondary reference hole 15, and insert the position pin 20 into the detection hole 2 19.

[0058] Step 3: Install quick clamp one (3), quick clamp two (4), and quick clamp three (5);

[0059] Step 4: Check the position of the lower door support 107, the upper door support 108, and the connecting rod 103.

[0060] Step four involves checking the position of the lower door support 107, including the following steps:

[0061] Insert the position pin 18 into the mounting hole and the test hole 17 on the lower door support 107. If the mounting hole on the lower door support 107 satisfies the position pin 18, it means that the mounting hole on the lower door support 107 is qualified.

[0062] like Figure 5 As shown, a go / no-go gauge is used to check the gap 21 between the vertical testing surface 121 of the testing seat 11 and the lower door support 107; a go / no-go gauge is inserted into the gap 22 between the horizontal testing surface 122 of the testing seat 11 and the lower door support 107. The testing seat 11 is used to check the positional accuracy of the connecting seat of the lower door support 107. If both gap 21 and gap 22 meet the requirements of the go / no-go gauge, it indicates that the positional accuracy of the connecting seat of the lower door support 107 is qualified.

[0063] The positional accuracy of the door support 108 is checked, including the following steps:

[0064] As shown in Figure 7 The gap three 23 between the top surface of the support table four 9 and the upper door support 108 is detected by using a go-no-go gauge, and the gap four 24 between the side surface of the support table four 9 and the upper door support 108 is detected by using a go-no-go gauge. The go-no-go gauge is mainly used to detect the position degree of the L-shaped mounting seat of the upper door support 108.

[0065] If the gap three 23 and the gap four 24 meet the go-no-go gauge requirements, it means that the position degree of the L-shaped mounting seat of the upper door support 108 meets the requirements.

[0066] As shown in Figure 6 The gap five 25 between the vertical detection surface 121 of the detection seat three 12 and the upper door support 108 is detected by using a go-no-go gauge, and the gap six 26 between the horizontal detection surface 122 of the detection seat three 12 and the upper door support 108 is detected by using a go-no-go gauge. The detection seat three 12 is mainly used to detect the position degree of the round shaft head of the upper door support 108. If the gap five 25 and the gap six 26 meet the go-no-go gauge requirements, it means that the position degree of the round shaft head of the upper door support 108 meets the requirements.

[0067] The position degree of the connecting rod one 103 is detected, including the following steps:

[0068] As shown in Figure 4 The gap seven 27 between the vertical detection surface 121 of the detection seat one 10 and the connecting rod one 103 is detected by using a go-no-go gauge, and the gap eight 28 between the horizontal detection surface 122 of the detection seat one 10 and the connecting rod one 103 is detected by using a go-no-go gauge. If the gap seven 27 and the gap eight 28 meet the go-no-go gauge requirements, it means that the position degree of the connecting rod one 103 is qualified.

[0069] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bending arm position detection tool for detecting the position of a bending arm assembly (1), characterized in that: It comprises a base (2); on the base (2), according to the theoretical matching relationship of the bending arm assembly (1) with the passenger car door, there are a support table one (6) matched with the vehicle body lower support (105), a support table two (7) matched with the vehicle body support (106), a support table three (8) matched with the vehicle door lower support (107), and a support table four (9) matched with the vehicle door upper support (108); The support table one (6) is provided with a main reference hole (13) matched with the mounting hole on the vehicle body lower support (105), and is provided with a main positioning pin (14) matched with the main reference hole (13); The support table two (7) is provided with a secondary reference hole (15) matched with the mounting hole on the vehicle body support (106), and is provided with a secondary positioning pin (16) matched with the secondary reference hole (15); The support table three (8) is provided with a detection hole one (17) matched with the mounting hole on the vehicle door lower support (107), and is provided with a position pin one (18) matched with the detection hole one (17); The support table four (9) is provided with a detection hole two (19) matched with the mounting hole on the vehicle door upper support (108), and is provided with a position pin two (20) matched with the detection hole two (19); On the base (2), there are a detection seat one (10) for detecting the connecting rod one (103), a detection seat two (11) for detecting the vehicle door lower support (107), and a detection seat three (12) for detecting the vehicle door upper support (108); The top ends of the detection seat one (10), the detection seat two (11) and the detection seat three (12) are provided with vertical detection faces (121) and horizontal detection faces (122), which form L-shaped detection zones.

2. The bent arm position detection tooling of claim 1, wherein: The detection seat one (10) is provided with two, which are left and right detection seat ones (10B) arranged along the theoretical extension direction of the connecting rod one (103).

3. The bent arm position detection tooling of claim 2, wherein: The base (2) is provided with a quick clamp one (3), a quick clamp two (4) and a quick clamp three (5); The quick clamp one (3) is located beside the support table one (6), the vehicle body lower support (105) is positioned behind the support table one (6), and the pressure head of the quick clamp one (3) is opposite to the vehicle body lower support (105) to clamp the vehicle body lower support (105); The quick clamp two (4) is located beside the support table two (7), the vehicle body support (106) is positioned behind the support table two (7), and the pressure head of the quick clamp two (4) is opposite to the support table two (7) to clamp the vehicle body support (106); The quick clamp three (5) is located beside the support table four (9), the vehicle door upper support (108) is positioned behind the support table four (9), and the pressure head of the quick clamp three (5) is downwardly abutted against the side surface of the vehicle door upper support (108).

4. The bent arm position detection tooling of claim 3, wherein: The first fast clamp (3), the second fast clamp (4) and the third fast clamp (5) each comprise a supporting leg (501), a swing arm (502) and a pressing shaft (503), the swing arm (502) is cantilevered mounted on the top of the supporting leg (501) and is rotatably connected with the supporting leg (501), the pressing shaft (503) is perpendicularly mounted on the cantilevered end of the swing arm (502), and the bottom end of the pressing shaft (503) is a pressing head.

5. The bent arm position detection tooling of claim 4, wherein: Supporting plates (504) are fixedly arranged on the side of the base (2) near the first supporting table (6) and the side of the base (2) near the second supporting table (7), and the bottom end of the supporting leg (501) of the first fast clamp (3) and the second fast clamp (4) is supported on the corresponding supporting plate (504); the bottom end of the supporting leg (501) of the third fast clamp (5) is supported on the top surface of the base (2).

6. The bend arm position detecting tooling of any one of claims 1-5, wherein: The base (2) comprises a square frame (201) surrounded by square steel pipes and a platform plate (202) laid on the top surface of the square frame (201).

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