CN102485402A

CN102485402A - Welding method capable of enhancing strength of automobile rear axle

Info

Publication number: CN102485402A
Application number: CN2011100263126A
Authority: CN
Inventors: 沈雁庭; 佘斯煜; 高杨秋
Original assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Current assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2012-06-06

Abstract

The invention discloses a welding method capable of enhancing the strength of an automobile rear axle. A reinforcing rib is welded between the cross beam of a rear axle and a suspension arm, and a main weld seam and an auxiliary weld seam are formed between the reinforcing rib and the suspension arm so as to weld the two parts together; the arc-starting point of the auxiliary weld seam is a point A, and the arc-stopping point is a point B; the arc-starting point of the main weld seam is a point C, and the arc-stopping point is a point D; and the sharp corner of the end of the lower side of the reinforcing rib is in contact with the suspension arm at a point E of the suspension arm, the lower part of the inner side of the reinforcing rib is in contact with the suspension arm at the point A of the suspension arm, the reinforcing rib is not in contact with the suspension arm at the point B of the suspension arm, the upper part of the outer side of the reinforcing rib is in contact with the suspension arm at the point C of the suspension arm, and the outer side of the reinforcing rib is not in contact with the suspension arm at the point D of the suspension arm. During the welding process, an arc is started from the point A around the point E, the arc is stopped at the point B, then another arc is started from the point C around the point E, the arc is stopped at the point D, and the main weld seam coincides with the auxiliary weld seam on a line connecting the point E and the point B so as to realize double-layer welding between the point E and the point B.

Description

Strengthen the welding method of automobile axle intensity

Technical field

The present invention relates to a kind of welding method.

Background technology

Improving constantly of Along with people's living standard; Automobile has progressively become the common walking-replacing tool of people's trip; And the torsion girder-like back axle plays a part very important as one of main back axle type of Hyundai Motor at aspects such as embodying car comfort, intensity, rigidity.

Present car torsion girder-like back axle, in the design phase, to reinforcement and suspension link place do about the alternating bending Stromeyer test time find that the insufficient strength here is to cause a main cause of test failure.Therefore the intensity that increases reinforcement and suspension link place has crucial effects to the security of automobile.

Summary of the invention

The object of the present invention is to provide a kind of welding method that strengthens automobile axle intensity, improve the low low problem of caused back axle structural strength of weld strength.

The welding method of enhancing automobile axle intensity of the present invention is welded reinforcement between back axle crossbeam and suspension link, reinforcement contacts with the suspension link line; Weld together with time weld seam thereby form main weld between reinforcement and the suspension link, the arcing point position of inferior weld seam is the A point, and receiving acnode is the B point; The arcing point of main weld is the C point, and receiving acnode is the D point, and the E point is the position of terminal sharp corner of reinforcement downside and suspension link contact position; The A point be the inboard bottom of reinforcement with the suspension link contact position in the position at suspension link place, the B point be reinforcement and suspension link not the contact position in the position at suspension link place, the C point is top and the position at the suspension link place of suspension link contact position outside the reinforcement; The D point is the reinforcement outside and the suspension link position at the suspension link place of contact position not; During welding, earlier check and accept arc around the E point to B, begin the starting the arc from the C point again and check and accept arc to D around the E point from the A point beginning starting the arc; Main weld overlaps at E point and B point line place with time weld seam, and the B point has formed double-deck weldering thereby the E point is to the position.

The present invention reduces weld defect through changing welding manner, lets assembly have good bending resistance and torsional property, and the main weld that the C point is ordered to D has played main effect to the weld strength of reinforcement and suspension link; The inferior weld seam that the A point is ordered to B reinforces the weakness of main weld from the inboard of reinforcement, guaranteed fusion penetration here and to enough cornerites of reinforcement; In one section that leads, forms between the inferior weld seam double-deck weldering EB; Inferior weld seam is that main weld is received the effect that arc has played preheating; Welding manner of the present invention is easy and simple to handle, and effect is obvious, can be to a certain extent through not more conversion materials just can realize the raising of Rear Axle and the reduction of cost.

Description of drawings

Fig. 1 is the sketch map of the welding method of enhancing automobile axle intensity of the present invention.

The specific embodiment

Time weld seam 132 parts are sightless in Fig. 1, for the ease of the purpose of observing, suppose that reinforcement 3 corresponding parts are transparent, thereby inferior weld seam 132 is all shown.Term top, orientation, bottom, inboard, the outside that use the back are to be reference with position shown in Figure 1.As shown in Figure 1, the welding method of enhancing automobile axle intensity, welding reinforcement 3 between back axle crossbeam 1 and suspension link 2; Reinforcement 3 contacts with suspension link 2 lines, welds together with time weld seam 132 thereby form main weld 131 between reinforcement 3 and the suspension link 2, and the arcing point position of inferior weld seam 132 is the A point; Receiving acnode is the B point, and the arcing point of main weld 131 is the C point, and receiving acnode is the D point; The E point is the position of terminal sharp corner of reinforcement 3 downsides and suspension link contact position; The A point be the inboard bottom of reinforcement 3 with suspension link 2 contact positions in the position at suspension link 2 places, the B point be reinforcement 3 and suspension link 2 not the contact position in the position at suspension link 2 places, the C point is the top in reinforcement 3 outsides and the position at suspension link 2 places of suspension link 2 contact positions; The D point is the not position at suspension link 2 places of contact position of reinforcement 3 outsides and suspension link 2; During welding, earlier check and accept arc around the E point to B, begin the starting the arc from the C point again and check and accept arc to D around the E point from the A point beginning starting the arc; Main weld overlaps at E point and B point line place with time weld seam, and the B point has formed double-deck weldering thereby the E point is to the position.

Claims

1. a welding method that strengthens automobile axle intensity is welded reinforcement between back axle crossbeam and suspension link, and reinforcement contacts with the suspension link line; Weld together with time weld seam thereby form main weld between reinforcement and the suspension link, the arcing point position of inferior weld seam is the A point, and receiving acnode is the B point; The arcing point of main weld is the C point, and receiving acnode is the D point, and the E point is the position of terminal sharp corner of reinforcement downside and suspension link contact position; The A point be the inboard bottom of reinforcement with the suspension link contact position in the position at suspension link place, the B point be reinforcement and suspension link not the contact position in the position at suspension link place, the C point is top and the position at the suspension link place of suspension link contact position outside the reinforcement; The D point is the reinforcement outside and the suspension link position at the suspension link place of contact position not; During welding, earlier check and accept arc around the E point to B, begin the starting the arc from the C point again and check and accept arc to D around the E point from the A point beginning starting the arc; Main weld overlaps at E point and B point line place with time weld seam, and the B point has formed double-deck weldering thereby the E point is to the position.