一种整体式自行车车架前三角焊接工装

Abstract

一种整体式自行车车架前三角焊接工装，包括底座、头管限位组件、侧推式头管压紧钳、上下管定位块、立管定位块、立管顶端压紧钳、五通管定位销轴、五通管压紧钳和工件压紧钳，所述头管限位组件、侧推式头管压紧钳、上下管定位块、立管定位块、立管顶端压紧钳、五通管定位销轴、五通管压紧钳和工件压紧钳均安装在底座上；所述底座通过连接板与焊接工位转位机的转轴装配，在底座上设有第一焊接位置避让槽、第二焊接位置避让槽和第三焊接位置避让槽。本实用新型可在底座水平状态下完成对焊接工件的精确定位和可靠固定，从而达到了保证焊接产品质量、提高工作效率的目的。

Claims

1. A unitary bicycle frame head tube welding fixture, characterized by: The components include a base (2), a head tube limiting assembly (3), a side-push head tube clamping pliers (4), upper and lower tube positioning blocks (10), a riser positioning block (7), a riser top clamping pliers (6), a five-way pipe positioning pin (8), a five-way pipe clamping pliers (9), and a workpiece clamping pliers (5). The head tube limiting assembly (3), the side-push head tube clamping pliers (4), the upper and lower tube positioning blocks (10), the riser positioning block (7), the riser top clamping pliers (6), the five-way pipe positioning pin (8), the five-way pipe clamping pliers (9), and the workpiece clamping pliers (5) are all mounted on the base (2). The base (2) is connected to the welding machine via connecting plates (2-4). The rotating shaft assembly of the indexing machine is provided with a first welding position avoidance groove (2-1), a second welding position avoidance groove (2-2), and a third welding position avoidance groove (2-3) on the base (2). The first welding position avoidance groove (2-1) is located at the welding position corresponding to the head tube (1-1) and the upper tube (1-2) and the lower tube (1-5). The second welding position avoidance groove (2-2) is located at the welding position corresponding to the upper tube (1-2) and the riser (1-3). The third welding position avoidance groove (2-3) is located at the welding position corresponding to the five-way tube (1-4) and the riser (1-3) and the lower tube (1-5).

2. The unitary bicycle frame head tube welding fixture of claim 1, wherein: The five-way pipe positioning pin (8) is fixed on the base (2) and located below the third welding position clearance groove (2-3) of the base (2).

3. The unitary bicycle frame head tube welding fixture of claim 2, wherein: The riser positioning block (7) is provided with an arc-shaped positioning groove (7-1) that matches the outer wall of the riser, and a number of riser positioning block mounting holes (7-2) that cooperate with the base (2) are provided at the bottom of the arc-shaped positioning groove (7-1).

4. The unitary bicycle frame head tube welding fixture of claim 3, wherein: The number of upper and lower tube positioning blocks (10) is not less than four sets, of which at least two sets are used for positioning the upper tube (1-2) workpiece, and the rest are used for positioning the lower tube (1-5) workpiece. Positioning grooves matching the outer wall of the upper tube (1-2) workpiece or the lower tube (1-5) workpiece are provided on the top surface of the upper and lower tube positioning blocks (10).

5. The unitary bicycle frame head tube weld fixture of claim 4, wherein: The number of workpiece clamping pliers (5) shall not be less than five sets, one set of which is used to clamp the riser (1-3) workpiece, at least two sets of which are used to clamp the upper pipe (1-2) workpiece, and the rest are used to clamp the lower pipe (1-5) workpiece. All workpiece clamping pliers (5) are assembled with the base (2) through the corresponding clamping plier assembly seat (5-1).

6. The unitary bicycle frame head tube weld fixture of claim 5, wherein: The workpiece clamping clamp (5) used to clamp the workpiece of the riser (1-3) is equipped with two sets of clamping heads (5-2). The center line connecting the two sets of clamping heads (5-2) is parallel to the center axis of the arc-shaped positioning groove (7-1) on the riser positioning block (7).

7. The unitary bicycle frame head tube weld fixture of claim 6, wherein: The base (2) is also provided with several sets of workpiece clamping clamps and upper and lower tube positioning block assembly holes (2-6). The workpiece clamping clamps and upper and lower tube positioning block assembly holes (2-6) are all elongated holes. Among them, the elongated hole that cooperates with the upper tube (1-2) workpiece and the tube (1-5) workpiece is a longitudinal elongated hole (2-6-1), and the elongated hole that cooperates with the vertical tube (1-3) workpiece is a transverse elongated hole (2-6-2).

8. The unitary bicycle frame head tube weld fixture of claim 7, wherein: The base (2) is also provided with several sets of riser positioning block assembly holes (2-7). The riser positioning block assembly holes (2-7) and hole spacing are matched with the riser positioning block mounting holes (7-2) and hole spacing at the bottom of the arc-shaped positioning groove (7-1) of the riser positioning block (7).

9. The unitary bicycle front triangle welding fixture of any one of claims 1 to 8, wherein: The head tube limiting assembly (3) is assembled with the side-push head tube clamping pliers (4); the side-push head tube clamping pliers (4) are mounted on the base (2) and located outside the first welding position clearance groove (2-1).

10. The unitary bicycle frame head tube weld fixture of claim 9, wherein: The base (2) is also provided with a reinforcing support plate (2-5), which is a right triangle shape, and its two right-angled sides are fixedly connected to the upper plane of the base and the connecting plate (2-4) respectively.

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