Friction stir welding internal support device with a closed cylinder with reserved openings in the center of both ends
A technology of friction stir welding and supporting devices, which is applied in the direction of auxiliary devices, welding equipment, welding equipment, etc., can solve the problems that the internal supporting devices are difficult to take out, and achieve the effects of convenient operation, uniform force, and reduced friction
Active Publication Date: 2015-11-18
NANJING UNIV OF SCI & TECH +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a friction stir welding internal support device with a simple structure and easy processing and manufacturing of a closed cylinder with reserved openings in the center of both ends, so as to solve the problem of stirring the closed cylinder with reserved small openings in the center of both ends. Difficult removal of internal support device during friction welding
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[0017] The following examples can enable those skilled in the art to understand the present invention more fully.
[0018] combine Figure 1~Figure 3 The structural composition of the present invention is illustrated:
[0019] A friction stir welding internal support device with a closed cylinder with reserved openings at the center of both ends, the device includes a support rod 2, a smooth collar 4, a first connecting rod 5, a second connecting rod 6 with bearings, and a supporting wheel 7. A collar 8 with an internal thread; wherein one end of the support rod 2 is a groove structure with a step 3, and the other end is a screw 9 structure, and the smooth collar 4 is matched with the step 3 through the groove, with The internal thread of the collar 8 and its internal thread cooperate with the screw structure at the other end of the support rod 2. The smooth collar 4 and the collar 8 with the inner thread are respectively connected to three first connecting rods 5 of equal le...
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The invention discloses an internal supporting device for friction stir welding of a closed barrel with reserved openings at the centers of two ends. The internal supporting device is composed of main parts, including bases, a supporting rod, connecting rods, supporting wheels, bearings, lantern rings and the like. The supporting rod is composed of a screw rod and a polish rod, and the connecting rods are connected with the supporting rod through the two lantern rings and can move along the supporting rod under the transmission action of the screw rod. The internal supporting device can effectively position and support the closed barrel with the reserved openings at the centers of the two ends during friction stir welding, circumferential welds of the barrel can be ensured to obtain enough rigid support during welding, after welding is finished, a connecting rod mechanism is enabled to move so as to reduce supporting height under the transmission action of the screw rod, the internal supporting device can be taken out from the small reserved openings at the centers of the two ends, the problem that internal rigid support is difficult to be provided to the closed barrel during friction stir welding is solved, and the problem that the internal supporting device for friction stir welding of the closed barrel is difficult to be taken out is solved. The internal supporting device is simple in structure, good in processing manufacturability, low in cost, convenient for manual operation and high in production efficiency.
Description
technical field [0001] The invention relates to an internal support device for a friction stir welding cylindrical body girth weld, in particular to an internal support device for friction stir welding for a closed type cylindrical body with reserved openings at the center of both ends. Background technique [0002] The material of the welded cylinder in the present invention is magnesium alloy, which is the lightest metal structure material at present, with low density, high specific stiffness and specific strength, good damping and shock absorption, good thermal conductivity, good electromagnetic shielding effect, and mechanical Excellent processing performance, stable parts size, easy recycling and other advantages, it is known as "the green engineering material of the 21st century". [0003] At present, the welding methods of magnesium alloy cylinder mainly include: tungsten inert gas welding (TIG welding), molten inert gas welding (MIG welding), laser welding (LBW), ele...
Claims
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IPC IPC(8): B23K37/02
CPCB23K20/126
Inventor 周琦许雄斌朱军陶娟王克鸿黄俊周红云夏浩孙宏宇
Owner NANJING UNIV OF SCI & TECH