The two most popular front diaphragms realize flex

2022-07-30
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Two kinds of front diaphragms realize flexible production and transportation on-line

(1) due to the change of the front diaphragm assembly, the NL 07 positioning tooling of the original lower vehicle body 50 . After comparing the two, the position of the main positioning process hole has not changed, but the auxiliary positioning process hole has changed; Some parts of the positioning under the two front diaphragms are the same. Selecting the appropriate position and the appropriate positioning mechanism can ensure that a set of positioning blocks can be used to position the two front diaphragms. It is considered to design the main locating pin of the tooling as a fixed mechanism adjustable in two directions, and the auxiliary locating pin without declaration of conformity is designed as a movable pin driven by a guide cylinder, which extends the corresponding locating pin when welding different vehicle models. The designed flexible mechanism is shown in Figure 3

the working process is as follows: when welding nl07, the pneumatic locating pin corresponding to nl07 extends, and the pneumatic locating pin corresponding to the clear high barrier film type of nl08 retracts. First, the front bulkhead assembly of nl07 is pre installed in place, the front and rear manbeam positioning and clamping units position and clamp the lower vehicle body, and the left and right flexible front bulkhead positioning tooling pushes the workbench for a distance of not less than 1500mm and clamps it (two locating pins play a guiding and positioning role), and welding

when welding NL 08, the pneumatic positioning pin corresponding to model L 08 extends, and the pneumatic positioning pin corresponding to model N1 07 retracts. First, the front bulkhead assembly of NL 08 is pre installed in place, the front and rear manbeam positioning and clamping units position and clamp the lower vehicle body, and the left and right flexible front bulkhead positioning tooling is pushed and clamped (the two positioning pins play a guiding and positioning role) for welding. At this time, NL 08 auxiliary locating pin extends, and nl07 auxiliary locating pin retracts

(2) the upper line of N1 07 front diaphragm assembly is automatically transported, and its lifting point is lifted by 3 points. Due to the structural change of NL 08 front diaphragm, only two positioning process holes are left on both sides, which cannot be used for lifting. Otherwise, the process holes are deformed, affecting the positioning of the front diaphragm of the station. The three-point lifting method is no longer applicable. After the structural analysis of the two front diaphragm assemblies, and from the perspective of safe operation, the lifting point is changed into (as shown in Fig. 4 and Fig. 5) two lifting points, and the buckle of the safety belt is used as the fishing hook to prevent falling off and protect the operator. At the same time, it can save the time of hanging the third point hook and reduce the non proliferation time

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