Pipe positioning mechanism for motorcycle frame welding

Abstract

The utility model discloses a kind of pipe fitting positioning mechanisms for motorcycle frame welding, comprising: intermediate pipe clamping mechanism, for the radial of intermediate pipe is clamped and limited, including fixed base, clamping block and the first driving part of driving clamping block movement, fixed groove is provided on the fixed base, the clamping block cooperation fixed groove completes the radial clamping and limiting of intermediate pipe;First side pipe clamping mechanism, for the first side pipe is clamped and driven to move;Second side pipe clamping mechanism, for the second side pipe is clamped and driven to move, by the radial limiting of intermediate pipe of intermediate pipe clamping mechanism, first side pipe and second side pipe are moved to the both ends of intermediate pipe simultaneously by first side pipe clamping mechanism and second clamping mechanism, complete positioning while the axial of intermediate pipe is limited, form three-dimensional limit, avoid the movement of intermediate pipe in welding process.

Description

Technical Field

[0001] This utility model relates to the field of vehicle frame welding equipment technology, and in particular to a positioning mechanism for tubular components used in motorcycle frame welding. Background Technology

[0002] In motorcycle frame welding, the precise alignment of the center tube (such as the main beam tube) with the side tubes (front head tube, rear cross tube, etc.) is crucial for ensuring the structural strength of the frame. Traditional processes typically employ a step-by-step clamping method: first, one end of the center tube is fixed; after welding one side of the tube, the clamp is released, readjusted, and then the other end of the center tube is clamped again for welding the other side. This method relies on radial clamping in the middle of the center tube for positioning, but lacks axial restraint structures at both ends. This allows the center tube to easily shift axially by 0.3–0.5 mm during welding due to thermal stress and uneven clamping force, directly affecting the coaxiality and gap uniformity of the weld.

[0003] Because each welding operation only fixes one end of the intermediate tube, leaving the other end suspended, the thermal deformation and mechanical stress generated during welding exacerbate the axial displacement of the tube, causing a symmetry deviation of up to ±1.5mm between the two weld seams, severely reducing the fatigue resistance of the chassis. Furthermore, multiple clamping operations require repeated manual calibration, with clamping time accounting for up to 40% of the total time for a single process. This is not only time-consuming and labor-intensive, but also leads to cumulative errors due to the difficulty in perfectly aligning the positioning references, further amplifying the risk of welding defects. For tubes of different specifications, traditional clamps require frequent replacement or adjustment, exhibiting poor compatibility and significantly increasing production costs and operational complexity.

[0004] In existing technologies, some improvement solutions attempt to enhance stability by increasing the number of clamping points on the intermediate tube or optimizing the radial clamping structure, but they have not yet solved the core problem of the lack of axial limiting. Therefore, there is an urgent need for an integrated positioning mechanism that can achieve stable radial clamping of the intermediate tube and precise axial limiting at both ends, in order to eliminate the drawbacks of step-by-step clamping, ensure the positional accuracy of the tube during welding, and fundamentally improve the quality and efficiency of frame welding. Utility Model Content

[0005] Purpose of the invention: The purpose of this utility model is to provide a positioning mechanism for pipe fittings used in welding motorcycle frames. The intermediate pipe is radially limited by an intermediate pipe clamping mechanism, while the first and second side pipes are moved to both ends of the intermediate pipe by a first and a second side pipe clamping mechanism. This completes the positioning while limiting the axial movement of the intermediate pipe, forming a three-dimensional limit and preventing the intermediate pipe from moving during the welding process.

[0006] Technical solution:

[0007] A positioning mechanism for tubular components used in motorcycle frame welding, comprising:

[0008] The intermediate tube clamping mechanism is used to clamp and limit the radial direction of the intermediate tube. It includes a fixed base, a clamping block and a first driving member for driving the clamping block to move. The fixed base is provided with a fixing groove, and the clamping block cooperates with the fixing groove to complete the radial clamping and limiting of the intermediate tube.

[0009] The first side tube clamping mechanism is used to clamp the first side tube and drive it to move. It includes a first sliding base, a first clamp mounted on the first sliding base, and a second driving member that drives the first sliding base to move along the axial direction of the intermediate tube.

[0010] The second side tube clamping mechanism is used to clamp and drive the second side tube to move. It includes a second sliding base, a second clamp mounted on the second sliding base, and a third driving member that drives the second sliding base to move axially along the middle tube.

[0011] Furthermore, the clamping surfaces of the fixing groove and the clamping blocks are provided with anti-slip grooves, and multiple anti-slip grooves are arranged along the axial direction of the intermediate tube.

[0012] Furthermore, the clamping surface of the fixing groove and the clamping block is an arc-shaped groove that matches the outer diameter of the intermediate tube.

[0013] Furthermore, the first driving component is a pneumatic cylinder or a hydraulic cylinder.

[0014] Furthermore, the first and second grippers are three-jaw chucks.

[0015] Furthermore, both the first clamp and the second clamp are provided in two sets.

[0016] Furthermore, the first side tube clamping mechanism further includes a first positioning plate for positioning the end face of one end of the first side tube, and the second side tube clamping mechanism further includes a second positioning plate for positioning the end face of one end of the second side tube.

[0017] Furthermore, the second and third driving components are pneumatic cylinders or hydraulic cylinders.

[0018] Beneficial effects: The intermediate tube is radially limited by the intermediate tube clamping mechanism, and the first and second side tubes are moved to both ends of the intermediate tube by the first and second side tube clamping mechanisms. This completes the positioning and limits the axial movement of the intermediate tube, forming a three-dimensional limit and preventing the intermediate tube from moving during the welding process. Attached Figure Description

[0019] Figure 1 This is a perspective view of Embodiment 1 of this utility model;

[0020] Figure 2This is a partial enlarged view of Embodiment 1 of this utility model;

[0021] Figure 3 This is a perspective view of Embodiment 2 of this utility model;

[0022] Figure 4 This is a partial enlarged view of Embodiment 2 of this utility model. Detailed Implementation

[0023] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 , 2 As shown, a positioning mechanism for tubular components used in motorcycle frame welding includes:

[0026] The intermediate tube clamping mechanism 1 is used to clamp and limit the radial direction of the intermediate tube 10. It includes a fixed base 11, a clamping block 12, and a first driving member 13 for driving the clamping block 12 to move. The fixed base 11 is provided with a fixing groove 111. The clamping block 12 cooperates with the fixing groove 111 to complete the radial clamping and limiting of the intermediate tube 10.

[0027] The first side tube clamping mechanism 2 is used to clamp the first side tube 20 and drive it to move. It includes a first sliding base 21, a first clamp 22 mounted on the first sliding base 21, and a second driving member 23 that drives the first sliding base 21 to move along the axial direction of the intermediate tube.

[0028] The second side tube clamping mechanism 3 is used to clamp the second side tube 30 and drive it to move. It includes a second sliding base 31, a second clamp 32 mounted on the second sliding base 31, and a third driving member 33 that drives the second sliding base 31 to move axially along the middle tube.

[0029] Furthermore, the clamping surfaces of the fixing groove 111 and the clamping surfaces of the clamping block 12 are provided with anti-slip grooves, and multiple anti-slip grooves are arranged along the axial direction of the intermediate tube 10.

[0030] Furthermore, the clamping surfaces of the fixing groove 111 and the clamping block 12 are arc-shaped grooves that match the outer diameter of the intermediate tube.

[0031] Furthermore, the first driving component 13 is a pneumatic cylinder or a hydraulic cylinder.

[0032] Furthermore, the first gripper 22 and the second gripper 32 are three-jaw chucks.

[0033] Furthermore, both the first clamp 22 and the second clamp 32 are provided with two sets.

[0034] Furthermore, the second driving member 23 and the third driving member 33 are cylinders or hydraulic cylinders.

[0035] Working principle: After the intermediate tube 10 is placed into the fixed groove 111, the first side tube clamping mechanism 2 clamps the first side tube and moves it to the position where it is welded to the intermediate tube to complete the axial limit of the intermediate tube. At the same time, the position of the intermediate tube is axially calibrated. Then, the second side tube clamping mechanism 2 clamps the second side tube and moves it to the position where it is welded to the intermediate tube to complete the other axial limit of the intermediate tube.

[0036] Example 2

[0037] Furthermore, the first side tube clamping mechanism 2 further includes a first positioning plate 24 for positioning the end face of one end of the first side tube 20, and the second side tube clamping mechanism 3 further includes a second positioning plate 34 for positioning the end face of one end of the second side tube 30. The positioning plates are used to position the first side tube and the second side tube axially, ensuring the correct welding points of the first side tube and the second side tube to the intermediate tube.

[0038] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A positioning mechanism for tubular components used in motorcycle frame welding, characterized in that, include: The intermediate tube clamping mechanism (1) is used to clamp and limit the radial direction of the intermediate tube (10). It includes a fixed base (11), a clamping block (12), and a first driving member (13) for driving the clamping block (12) to move. The fixed base (11) is provided with a fixing groove (111). The clamping block (12) cooperates with the fixing groove (111) to complete the radial clamping and limiting of the intermediate tube (10). The first side tube clamping mechanism (2) is used to clamp the first side tube (20) and drive it to move. It includes a first sliding base (21), a first clamp (22) mounted on the first sliding base (21), and a second driving member (23) that drives the first sliding base (21) to move along the axial direction of the intermediate tube. The second side tube clamping mechanism (3) is used to clamp the second side tube (30) and drive it to move. It includes a second sliding base (31), a second clamp (32) mounted on the second sliding base (31), and a third driving member (33) that drives the second sliding base (31) to move along the axial direction of the intermediate tube.

2. The positioning mechanism for tubular components used in motorcycle frame welding according to claim 1, characterized in that, The clamping surfaces of the fixing groove (111) and the clamping surfaces of the clamping block (12) are provided with anti-slip grooves, and multiple anti-slip grooves are arranged along the axial direction of the intermediate tube (10).

3. The positioning mechanism for pipe fittings used in motorcycle frame welding according to claim 1, characterized in that, The clamping surfaces of the fixing groove (111) and the clamping block (12) are arc-shaped grooves that match the outer diameter of the intermediate tube.

4. The positioning mechanism for tubular components used in motorcycle frame welding according to claim 1, characterized in that, The first driving component (13) is a cylinder or a hydraulic cylinder.

5. A positioning mechanism for pipe fittings used in motorcycle frame welding according to claim 1, characterized in that, The first gripper (22) and the second gripper (32) are three-jaw chucks.

6. The positioning mechanism for a pipe fitting used in motorcycle frame welding according to claim 5, characterized in that, Both the first clamp (22) and the second clamp (32) are provided with two sets.

7. A positioning mechanism for tubular components used in motorcycle frame welding according to claim 1, characterized in that, The first side tube clamping mechanism (2) further includes a first positioning plate (24) for positioning the end face of one end of the first side tube (20), and the second side tube clamping mechanism (3) further includes a second positioning plate (34) for positioning the end face of one end of the second side tube (30).

8. A positioning mechanism for tubular components used in motorcycle frame welding according to claim 1, characterized in that, The second drive member (23) and the third drive member (33) are cylinders or hydraulic cylinders.

Images