Spot-welding clamping device capable of making current concentratedly flow through specified conductive contact section
A technology of conductive contact and current concentration, applied in resistance welding equipment, resistance electrode holder, welding/welding/cutting objects, etc., can solve the problems of large shrinkage hole, large conductive contact surface, uncertain discharge position, etc., to achieve structural design Simple, convenient spot welding operation, and the effect of spot welding current concentration
Active Publication Date: 2020-10-13
BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH
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AI Technical Summary
Problems solved by technology
The fundamental reason is that the current output at the spot welding electrode is not concentrated and stable enough
[0004] At present, the existing spot welding clamping device has a large conductive contact surface with the parts, the discharge position is uncertain, the current needs to be adjusted during welding, the welding spatter of the parts is large, and it is easy to produce large shrinkage cavities.
Method used
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Embodiment Construction
[0022] The present invention will be described in further detail below.
[0023] A spot welding clamping device that allows current to flow concentratedly through a designated conductive contact section, and is used to spot weld the outer ring 8 and the positioning block 7 to form an outer ring assembly such as figure 1 As shown, it is composed of a central positioning body 1, an insulating bush 2, an opening pressing plate 3, a nut 4, an electrode head 5, an upper electrode 6, a positioning piece 9, a pressing plate 10, a pressing bolt 11, and a dismounting rod 12;
[0024] Among them, the surface of the central positioning body 1 is coated with polytetrafluoroethylene class A coating to achieve insulation with the parts except for the transfer part with the spot welding machine; the central positioning body 1 has a T-shaped structure, and the upper part is a through hole. Cylindrical structure, both ends are stepped circles, the middle is a square, and the lower part is a co...
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The invention belongs to the technical field of resistance welding of thin-walled circular ring type stainless steel parts, and relates to a spot-welding clamping device capable of making a current concentratedly flow through a specified conductive contact section. The spot-welding clamping device comprises a central positioning body (1), an insulating bushing (2), an opened pressing plate (3), anut (4), an electrode head (5), an upper electrode (6), a positioning piece (9), a pressing plate (10), a compressing bolt (11) and a detaching bar (12). The central positioning body (1) and the positioning piece (9) are coated with polytetrafluoroethylene type-A coatings, and the center is compressed by penetrating a nail and through an auxiliary insulating gasket, so that it is ensured that parts making contacting with a spot-welding part are all insulated except the electrode head, the spot-welding current concentratedly flows through the contact section between the electrode head and the part, in the spot-welding process, the spot-welding current is small and concentrated, and the heat loss is less; an outer ring assembly is welded through small current concentration and stable outputin a small space; and the spot-welding clamping device is simple in structural design, and spot-welding operation is convenient and fast.
Description
technical field [0001] The invention belongs to the technical field of resistance welding of thin-walled circular stainless steel material parts, relates to the technical field of spot welding of an outer ring component of an aero-engine fuel regulator, and in particular relates to a spot welding clamping device for concentrating current to flow through a designated conductive contact section. It can create a unique current channel for the contact point between the outer ring part and the electrode during welding to ensure the welding nugget requirements. Background technique [0002] In the aero-engine fuel adjustment system, the outer ring assembly is used to seal the fuel at the position of the drive shaft, and the low-pressure fuel from the gear pump can be sealed through the graphite ring inside the mechanical seal, the sealing ring and the outer rubber ring. [0003] The outer ring assembly needs to resist a certain torque requirement during the working process, and th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23K11/11B23K11/31B23K11/36B23K103/04
CPCB23K11/11B23K11/314B23K11/36B23K2103/05
Inventor 李崇张耀王兆起王辉刘长兴王志刚行坤峰
Owner BEIJING HANGKE ENGINE CONTROL SYST SCI & TECH