A gauge for handrail welding assemblies

Abstract

This utility model discloses a gauge for handrail welding assemblies, which assists in the inspection of the handrail assembly after welding. The gauge includes a base plate with support blocks arranged in a triangular pattern on the base plate, forming a three-point support for the handrail assembly. The support blocks are pressed down and fixed at the support points by quick-pressing clamps. A coaxiality detection component is installed on the base plate at the outer end of the long axis of the handrail assembly. The detection pin in the coaxiality detection component moves axially toward or away from the long axis. Length detection components are installed on the base plates at both ends of the long axis of the handrail assembly. The slider in the length detection component moves toward or away from the long axis along the cross-sectional direction of the long axis. By supporting the handrail assembly on the support blocks and fixing it with the corresponding quick-pressing clamps, the coaxiality of the long axis can be detected by the movement of the detection pin, and the length of the long axis can be detected by the movement of the slider. The overall operation is convenient, effectively replacing the use of existing coordinate measuring machines, and realizing multi-dimensional measurement in one clamping, which has good practicality.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts inspection tools, and in particular to an inspection tool for handrail welding assemblies. Background Technology

[0002] A car contains numerous parts. Only when each part guarantees its own quality and works in perfect harmony with the others can the overall car assembly be qualified and stable, ensuring the safe and reliable operation and use of the vehicle. In the rear cup holders of a car, the armrest assembly, as the supporting structure, is typically constructed from multiple welded metal parts. To ensure the reliable installation of the armrest assembly within the cup holders, dimensional inspection of the welded armrest assembly is necessary.

[0003] In existing technologies, different positions on the handrail assembly are usually inspected manually using different measuring tools or gauges. This requires moving between different tools and gauges and performing repeated positioning, which is cumbersome, time-consuming, and labor-intensive. Furthermore, the coaxiality inspection also requires the use of a coordinate measuring machine, which is very time-consuming and difficult to match with production requirements. Utility Model Content

[0004] To address the aforementioned issues, this application provides a reasonably structured inspection fixture for handrail welding assemblies, effectively replacing the use of existing coordinate measuring machines (CMMs). It also enables multi-dimensional measurements in a single clamping operation, offering convenient overall operation and high practicality.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A gauge for handrail welding assemblies, used to assist in the inspection of the handrail assembly after welding. The handrail assembly includes a U-shaped frame with an opening that tapers inwards. Short shafts are coaxially arranged and installed on the two arms of the U-shaped frame opening. A long shaft is connected and installed at the opening end of the U-shaped frame. The gauge includes a base plate with support blocks arranged in a triangular pattern on the base plate, which provide three-point support for the handrail assembly and are fixed by quick-pressing clamps at the support points. A coaxiality detection component is installed on the base plate at the outer end of the long shaft of the handrail assembly. The detection pin in the coaxiality detection component moves axially toward or away from the long shaft. Length detection components are installed on the base plates at both ends of the long shaft of the handrail assembly. The slider in the length detection component moves toward or away from the long shaft along the cross-sectional direction of the long shaft.

[0007] As a further improvement to the above technical solution:

[0008] The support blocks include a support block one supported in the middle of the U-shaped frame of the handrail assembly and a support block two supported at the outer end of the short shaft of the handrail assembly. The base plate is also equipped with a quick clamp one that matches the support block one and a quick clamp two that matches the support block two.

[0009] It also includes a side-pressing assembly, which is located inside the U-shaped frame of the handrail assembly. The side-pressing assembly is laterally pressed into the inner end of one of the short shafts by a corresponding quick-pressing clamp.

[0010] The coaxiality detection component has the following structure: it includes a support mounted on a base plate, and a detection pin is slidably mounted on the support; the axial direction and sliding direction of the detection pin are both aligned with the axial direction of the long axis, and the inner end of the detection pin facing the long axis is recessed to form a shaft hole, the size of which is adapted to the diameter of the long axis.

[0011] The end of the detection pin located on the inner side of the support forms a large head, and the shaft hole is opened in the head; the detection pin is slidably fitted to the support via a sliding sleeve, and an elastic element is installed between the outer end of the detection pin and the outer side of the support, the elastic element driving the detection pin away from the long axis.

[0012] The length detection component has the following structure: it includes a support two mounted on the base plate, a slider slidably mounted on the support two, and the sliding direction of the slider is perpendicular to the long axis; the inner side of one of the sliders in the two sets of length detection components is set as a step surface via a vertical step.

[0013] A connecting frame is also installed between the two arms of the U-shaped frame. A detection block adapted to the connecting frame is installed on the base plate. A concave step is opened on the side of the detection block. The side and bottom of the concave step form a measuring surface. An interval is formed between the measuring surface and the connecting frame. It also includes a corresponding go / no-go gauge assembly for interval measurement.

[0014] The connecting frame includes two parallel ones. The base plate is equipped with two sets of detection blocks corresponding to the two connecting frames, namely detection block one and detection block two. The opposite sides of detection block one and detection block two are provided with concave steps to form corresponding measuring surfaces.

[0015] It also includes a handheld detection block, the length of which is consistent with the spacing of the inner section of the U-shaped frame opening of the handrail assembly; the base plate has a recessed structure for accommodating the handheld detection block.

[0016] The base plate is also equipped with contour detection blocks, which are spaced outside the ends of the two arms of the U-shaped frame of the handrail assembly. The sides of the contour detection blocks are contoured to the opposite ends of the U-shaped frame and are spaced apart. It also includes corresponding go / no-go gauge components for interval measurement.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model supports the handrail assembly on the support block and fixes it with the corresponding quick clamps. The coaxiality of the long axis can be detected by the movement of the detection pin, and the length of the long axis can be detected by the movement of the slider. The overall operation is convenient, effectively replacing the use of the existing coordinate measuring machine, and realizing multi-dimensional measurement in one clamping, which is very practical.

[0019] This utility model also has the following advantages:

[0020] The support blocks provide three-point support for the handrail assembly, while the support blocks on the short shaft end form a detection reference, thereby effectively ensuring the detection of the long shaft coaxiality by moving the detection pin in the coaxiality detection assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the handrail assembly of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the inspection tool of this utility model.

[0023] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0024] Figure 4 This is a cross-sectional view of the coaxiality detection component and the length detection component of this utility model.

[0025] Figure 5 for Figure 4 A magnified view of a section at point B.

[0026] Figure 6 This is a schematic diagram of the structure of the go / no-go gauge assembly of this utility model.

[0027] Figure 7 This is a schematic diagram showing the state of the handrail assembly during inspection using the inspection tool of this utility model.

[0028] Figure 8 for Figure 7 A magnified view of a section at point C.

[0029] Figure 9 This is a schematic diagram of the length measuring block of this utility model being used to test the handrail assembly.

[0030] The components include: 1. Base plate; 2. Support block one; 4. Support block two; 5. Coaxiality detection assembly; 6. Length detection assembly; 7. Side pressure assembly; 8. Go / no-go gauge assembly; 9. Handle; 10. Handrail assembly.

[0031] 11. Handheld inspection block; 12. Length measuring block; 13. Contouring inspection block;

[0032] 21. Quick-release clamps one; 40. Receiving groove; 41. Quick-release clamps two;

[0033] 31. Detection Block 1; 32. Detection Block 2; 311. Concave Step;

[0034] 51. Support 1; 52. Sliding sleeve; 53. Elastic element; 54. Detection pin; 541. Shaft hole;

[0035] 61. Support 2; 62. Slider; 621. Step surface;

[0036] 80. Flexible frame; 81. Handheld part; 82. Detection part; 801. Clamping part;

[0037] 101. U-shaped frame; 102. Short shaft; 103. Long shaft; 104. Connecting frame. Detailed Implementation

[0038] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0039] like Figure 1 As shown, this embodiment provides a tooling for inspecting a handrail welding assembly, which is used to assist in the inspection of the handrail assembly 10 after welding. The handrail assembly 10 includes a U-shaped frame 101 with its opening facing inward. Short shafts 102 are coaxially mounted on the two arms of the opening of the U-shaped frame 101, and a long shaft 103 is connected to the opening end of the U-shaped frame 101.

[0040] In actual production, it is necessary to inspect and control the dimensions of the handrail assembly 10, including geometric tolerances, such as the coaxiality of the long axis 103 relative to the short axis 102, the length of the long axis 103, the opening end size of the U-shaped frame 101, and the opening end profile of the U-shaped frame 101.

[0041] like Figure 2 As shown, the inspection tool includes a base plate 1, on which support blocks are arranged in a triangular pattern, forming a three-point support for the handrail assembly 10, and are pressed and fixed at the support points by quick clamps; a coaxiality detection component 5 is installed on the base plate 1 at the outer end of the long shaft 103 of the handrail assembly 10, and the detection pin 54 in the coaxiality detection component 5 moves axially toward or away from the long shaft 103; a length detection component 6 is installed on the base plate 1 at both ends of the long shaft 103 of the handrail assembly 10, and the slider 62 in the length detection component 6 moves toward or away from the long shaft 103 along the cross-sectional direction of the long shaft 103.

[0042] In actual operation, by supporting the handrail assembly 10 on the support block and fixing it with the corresponding quick clamp, the coaxiality of the long axis 103 can be detected by the movement of the detection pin 54, and the length of the long axis 103 can be detected by the movement of the slider 62. The overall operation is convenient, realizing multi-dimensional measurement in one clamping and effectively replacing the use of the existing coordinate measuring machine.

[0043] The support blocks include a support block 12 supported in the middle of the U-shaped frame 101 of the handrail assembly 10 and a support block 24 supported at the outer end of the short shaft 102 of the handrail assembly 10. The base plate 1 is also equipped with a quick clamp 121 that matches the support block 12 and a quick clamp 241 that matches the support block 24.

[0044] In this embodiment, while the support block provides three-point support for the handrail assembly 10, the support block 4 provides support and limit for the end of the short shaft 102 to form a detection reference, thereby effectively ensuring the detection of the coaxiality of the long shaft 103 by the movement of the detection pin 54 in the coaxiality detection component 5.

[0045] like Figure 3 As shown, the second support block 4 has a receiving groove 40 for fitting the end of the short shaft 102. The bottom surface of the receiving groove 40 is set with a V-shaped structure so that after the quick clamp 41 presses down on the short shaft 102, the V-shaped structure can reliably limit the short shaft 102.

[0046] It also includes a side pressure component 7, which is located inside the U-shaped frame 101 of the handrail assembly 10. The side pressure component 7 is laterally pressed onto the inner end of one of the short shafts 102 by a corresponding quick press clamp, so that the handrail assembly 10 is horizontally and laterally attached to the corresponding support block 4.

[0047] like Figure 4 As shown, the coaxiality detection component 5 has the following structure: it includes a support 51 mounted on the base plate 1, and a detection pin 54 is slidably mounted on the support 51; the axial direction and sliding direction of the detection pin 54 are both aligned with the axial direction of the long axis 103, and the inner end of the detection pin 54 facing the long axis 103 is recessed to form a shaft hole 541, the size of which is adapted to the diameter of the long axis 103.

[0048] In this embodiment, after the armrest assembly 10 is clamped and fixed by the quick clamp, force can be applied to the detection pin 54 to move it toward the long shaft 103. The coaxiality of the long shaft 103 is determined by the fit between the shaft hole 541 at the end of the detection pin 54 in the coaxiality detection assembly 5 and the two ends of the long shaft 103. If the detection pins 54 at both ends can be smoothly fitted into the two ends of the long shaft 103 through the shaft hole 541, the coaxiality of the long shaft 103 is qualified. If one end or both ends fail to be smoothly fitted, the coaxiality of the long shaft 103 is unqualified.

[0049] The end of the detection pin 54 located inside the support 51 forms a large head, and the shaft hole 541 is opened in the head, so as to prevent the detection pin 54 from detaching from the support 51 laterally, and also effectively ensure the structural strength of the shaft hole 541 in the head; the detection pin 54 is slidably fitted to the support 51 via the sliding sleeve 52, and an elastic element 53 is installed between the outer end of the detection pin 54 and the outer side of the support 51. The elastic element 53 drives the detection pin 54 away from the long axis 103; in use, by applying force to the detection pin 54, it overcomes the elastic force of the elastic element 53 and slides inward relative to the support 51, thereby moving closer to the long axis 103 and performing detection.

[0050] The length detection component 6 has the following structure: it includes a support 61 mounted on the base plate 1, a slider 62 slidably mounted on the support 61, and the sliding direction of the slider 62 is perpendicular to the axial direction of the major axis 103; the inner side of one of the sliders 62 in the two sets of length detection components 6 is set as a stepped surface 621 via a vertical step, such as... Figure 5 As shown.

[0051] In actual operation, force is applied to the sliders 62 in the two sets of length detection components 6 at the same time, driving them to move toward the long axis 103 until the end of the long axis 103.

[0052] In this embodiment, a vertical step is provided on one of the sliders 62, thereby forming parallel and staggered step surfaces 621 in front of and behind the vertical step. The two step surfaces 621 on the slider 62 are matched with the inner side of the other slider 62 to form a pass / stop detection of the length of the major axis 103. The step surface 621 closer to the major axis 103 is the pass detection, and the other step surface 621 is the stop detection. In use, as the slider 62 moves toward the major axis 103, the closer step surface 621 moves closer to the major axis 103 first, and the other step surface 621 moves closer to the major axis 103 later. If the step surface 621, which is the pass detection, can move smoothly to the end of the major axis 103, while the step surface 621, which is the stop detection, cannot move smoothly to the end of the major axis 103, then the length dimension of the major axis 103 is qualified; otherwise, the length dimension of the major axis 103 is unqualified.

[0053] A connecting frame 104 is also installed between the two arms of the U-shaped frame 101. A detection block adapted to the connecting frame 104 is installed on the base plate 1. A concave step 311 is opened on the side of the detection block. The side and bottom of the concave step 311 form a measuring surface. A gap is formed between the measuring surface and the connecting frame 104. It also includes a corresponding go / no-go gauge assembly 8 for gap measurement. By using the go / no-go gauge assembly 8 to perform go / no-go detection on the gap between the measuring surface and the connecting frame 104, the qualification of the connecting frame 104 can be determined.

[0054] like Figure 6As shown, the go / no-go gauge assembly 8 includes an elastic frame 80 with a spring structure mounted on the base plate 1. The elastic frame 80 has an opening at the top, and the two sides of the opening bend inward and extend together to form a clamping part 801 for the go / no-go gauge. The go / no-go gauge includes a handheld part 81 in the middle that can be clamped in the clamping part 801. The two ends of the handheld part 81 extend laterally to form detection parts 82. The two detection parts 82 at both ends are set to different diameters corresponding to go and no-go according to the detection requirements.

[0055] During testing, if the smaller diameter detection part 82 can be smoothly inserted into the gap, it is considered a pass; if the larger diameter detection part 82 cannot be inserted into the gap, then the corresponding gap is considered a pass.

[0056] like Figure 7 and Figure 8 As shown, the connecting frame 104 includes two parallel ones. The base plate 1 is equipped with two sets of detection blocks corresponding to the two connecting frames 104, namely detection block one 31 and detection block two 32. The sides of detection block one 31 and detection block two 32 facing away from each other are provided with concave steps 311 to form corresponding measuring surfaces.

[0057] In actual operation, the detection of the interval between the two connecting brackets 104 and the corresponding detection block can be carried out using the same set of go and no-go gauge components 8, which is convenient for actual operation.

[0058] It also includes a handheld detection block 11, the length of which is consistent with the spacing of the recessed section of the U-shaped frame 101 of the handrail assembly 10; the base plate 1 has a recessed structure for accommodating the handheld detection block 11.

[0059] During testing, after the handrail assembly 10 is fixed to the base plate 1 by quick clamps, the handheld test block 11 is taken and placed from top to bottom at the test position at the opening end of the U-shaped frame 101 to test the opening distance.

[0060] In this embodiment, parallel stop and pass detection surfaces can be set on both ends of the handheld detection block 11 along its length. The lower pass detection surface can be smoothly fitted into the opening of the U-shaped frame 101, while the upper stop detection surface cannot be fitted into the opening of the U-shaped frame 101, thus the test is qualified.

[0061] A contour detection block 13 is also installed on the base plate 1. The contour detection block 13 is spaced outside the two arm ends of the U-shaped frame 101 of the handrail assembly 10. The side of the contour detection block 13 is contoured to the opposite end of the U-shaped frame 101 and there is a gap. It also includes a corresponding go / no-go gauge assembly 8 for interval measurement. The go / no-go gauge is used to perform go / no-go detection at the gap between the detection surface of the contour detection block 13 and the end of the U-shaped frame 101.

[0062] like Figure 9As shown, length measuring blocks 12 can also be installed at intervals at the end of the base plate 1. The inner surfaces of the length measuring blocks 12 opposite each other form a detection surface for the length of the major axis 103, thus realizing another detection structure for the length of the major axis 103.

[0063] Of course, in actual operation, the detection surface of one of the length measuring blocks 12 can be configured as a through / stop structure with horizontally arranged steps.

[0064] In this embodiment, a handle 9 can be installed on the opposite end face of the base plate 1 to facilitate the picking up, placing, and transferring of the inspection tool.

[0065] The method of using this utility model is as follows:

[0066] The handrail assembly 10 is placed on the support block, and the side pressure component 7 applies lateral force to the corresponding short shaft 102 ends and presses it tight. Three quick-pressing clamps descend and press against the middle of the U-shaped frame 101 and the outer ends of the short shafts 102 on both sides, completing the clamping and fixing of the handrail assembly 10 on the base plate 1. Figure 6 As shown.

[0067] Force is applied to the slider 62 in the length detection component 6, causing it to move toward both ends of the long shaft 103. The pass / stop test determines whether the length dimension of the long shaft 103 is qualified. Force is applied to the detection pin 54 in the coaxiality detection component 5, causing the detection pin 54 to move toward the end of the long shaft 103. The coaxiality of the long shaft 103 is determined by the fit between the shaft hole 541 at the end of the detection pin 54 and the end of the long shaft 103. The corresponding go / no-go gauge component 8 is used to perform go / no-go tests on the gap between the contour detection block 13 and the end of the U-shaped frame 101, and the gap between the detection block and the connecting frame 104. The handheld detection block 11 is used to perform go / no-go tests on the gap at the open end of the U-shaped frame 101. Thus, the inspection of the handrail assembly 10 is completed.

[0068] This utility model is used for the inspection of handrail assembly 10. The overall operation is convenient, effectively replacing the use of the existing coordinate measuring machine, and realizing multi-dimensional measurement in one clamping, which is very practical.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A gauge for handrail welding assembly, which is used for assisting the detection of a welded handrail assembly (10), the handrail assembly (10) comprising a U-shaped frame (101) with inwardly converging arms at the opening, a short shaft (102) being coaxially arranged and mounted through each arm at the opening of the U-shaped frame (101), and a long shaft (103) being mounted in connection with the opening end of the U-shaped frame (101); characterized in that: The inspection tool includes a base plate (1), on which support blocks are arranged in a triangular pattern, forming a three-point support for the handrail assembly (10), and are fixed by quick clamps at the support points; a coaxiality detection component (5) is installed on the base plate (1) at the outer end of the long shaft (103) of the handrail assembly (10), and the detection pin (54) in the coaxiality detection component (5) moves axially toward or away from the long shaft (103); a length detection component (6) is installed on the base plate (1) at both ends of the long shaft (103) of the handrail assembly (10), and the slider (62) in the length detection component (6) moves toward or away from the long shaft (103) along the cross-sectional direction of the long shaft (103).

2. A gauge for a handrail welding assembly as defined in claim 1, wherein: The support blocks include a support block one (2) supported in the middle of the U-shaped frame (101) of the handrail assembly (10) and a support block two (4) supported at the outer end of the short shaft (102) of the handrail assembly (10). The base plate (1) is also equipped with a quick clamp one (21) that matches the support block one (2) and a quick clamp two (41) that matches the support block two (4).

3. A gauge for a handrail welding assembly as defined in claim 1, wherein: It also includes a side pressure assembly (7), which is located inside the U-shaped frame (101) of the handrail assembly (10). The side pressure assembly (7) is laterally pressed into the inner end of one of the short shafts (102) by a corresponding quick press clamp.

4. The inspection fixture for handrail welding assemblies as described in claim 1, characterized in that: The coaxiality detection component (5) has the following structure: it includes a support (51) mounted on the base plate (1), and a detection pin (54) is slidably mounted on the support (51); the axial direction and sliding direction of the detection pin (54) are both aligned with the axial direction of the long shaft (103), and the inner end of the detection pin (54) facing the long shaft (103) is recessed to form a shaft hole (541), and the size of the shaft hole (541) is adapted to the diameter of the long shaft (103).

5. A gauge for a handrail welding assembly as defined in claim 4 wherein: The end of the detection pin (54) located inside the support (51) forms a large head, and the shaft hole (541) is opened in the head; the detection pin (54) is slidably fitted to the support (51) via the sliding sleeve (52), and an elastic element (53) is installed between the outer end of the detection pin (54) and the outer side of the support (51), and the elastic element (53) drives the detection pin (54) away from the long axis (103).

6. A gauge for a handrail welding assembly as in claim 1, wherein: The structure of the length detection component (6) is as follows: it includes a support two (61) installed on the base plate (1), and a slider (62) is slidably mounted on the support two (61). The sliding direction of the slider (62) is perpendicular to the axial direction of the long axis (103). The inner side of one of the sliders (62) in the two sets of length detection components (6) is set as a step surface (621) via a vertical step.

7. A gauge for a handrail welding assembly as in claim 1, wherein: A connecting frame (104) is also installed between the two arms of the U-shaped frame (101). A detection block adapted to the connecting frame (104) is installed on the base plate (1). A concave step (311) is opened on the side of the detection block. The side and bottom of the concave step (311) form a measuring surface. The measuring surface and the connecting frame (104) form a gap. It also includes a corresponding go / no-go gauge assembly (8) for interval measurement.

8. A gauge for a handrail welding assembly as defined in claim 7, wherein: The connecting frame (104) includes two parallel ones. The base plate (1) is equipped with two sets of detection blocks corresponding to the two connecting frames (104), namely detection block one (31) and detection block two (32). The sides of detection block one (31) and detection block two (32) opposite to each other are provided with concave steps (311) to form corresponding measuring surfaces.

9. A gauge for a handrail welding assembly as in claim 1, wherein: It also includes a handheld detection block (11), the length of which is consistent with the spacing of the recessed section of the U-shaped frame (101) of the handrail assembly (10); the base plate (1) has a recessed structure for accommodating the handheld detection block (11).

10. A gauge for a handrail welding assembly as in claim 1, wherein: The base plate (1) is also equipped with a contour detection block (13), which is spaced outside the two arms of the U-shaped frame (101) of the handrail assembly (10). The side of the contour detection block (13) is contoured to the opposite end of the U-shaped frame (101) and there is a gap. It also includes a corresponding go / no-go gauge assembly (8) for interval measurement.

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