Advantage of the DMU used in the processes of Body in White (BIW)

  • Reduce waste material and the cost of equipment
  • Optimization of the production process.
  • Reduction of errors in providing design and avoiding them.
  • Make faster Time To Market.
  • Lower costs for product development

Instruments used in the field Automotiv

  • dmu 1VISMOCKUP Software Siemens for the simulation of DMU, Weldability Checks, Assembly Path, Assembly Check.·
  • JACK-VISMOCKUP Inner packet of Vismockup used to evaluate the ergonomics during the operations of mounting and / or dismounting mathematical, during line assembly.·
  • TEAMCENTER Siemens software used for Data management of mathematics 3D.

DMU in Body in white (BIW)

The DMU in body white consists of checks feasibility BIW of the product (CHASSIS and BODY).

The activity involves the verification of weldability and feasibility of the product with the identification of any problems in the case in which the welding points does not comply with the rules of the builder and in the case in which there are difficulties in the loading of the metal sheets (METHOD / panel Fitment). Regarding the weldability of the mathematics is performed a detailed analysis of the following points:

  • Maximum number of sheets to be welded.
  • Thickness equivalent sheets to be welded.
  • Position points Welding.Search for the welding gun optimal verifying its accessibility.

While for the feasibility of the mathematics is analyzed:

  • Loading Pieces (Successful combination of sheets).
  • Sequence Coupling (Plan Method).
  • Panels Assembly (“QdM”).

QdM

The “Panels Assembly” QdM It is a document in which it is carried out in detail each individual element of a subgroup and their loading sequence.

The document included all the physical (material, thickness, weight) and managerial (CODEP, Part Number, quantity, carry over, buy or make, quantity spot welds) of the mathematics received by R & D.

The instruments that are used for the realization of the QDM are documents that are received by R & D and FCA (Method):

  • 3D CAD (Mathematics .jt)
  • CADLIST (Part list)
  • PM (Plan Method))

The QdM It is used to communicate with the office that deals with method, with the R & D department and the yard.

REPORT STEPS PLIERS

  • dmu custom1Codep + Assembly Mathematics 3D
  • Loading Subassembly
  • Point WeldingClamp Welding Fumes
  • Stemps Clamp + Section for Each Point Welding.
  • Positive or Negative Results for each Point Welding

SELECTION OF CLAMP WELDING

  • dmu 4Thickness Equivalent
  • Step between point welding
  • Minimum Distance from the Edge
  • Minimum Distance from the Profile of Overall
  • Value of Overlapping SheetsØ of the Clamp Electrode Welding

DMU in ASSEMBLY

The DMU during assembly enables the validation process of the packaging of the vehicle in advance compared to the first physical prototypes.

The activity involves the verification of the mount at / disassembly of the product and of the 'ergonomics of' operator in the carry out such operations.
During the execution of checks Virtual analyzing:

  • Decomposition product and assembly sequences.
  • PairingsReferences, Fixing Points.
  • Trajectory Assembly.
  • Accessibility, reachability, visibility fasteners operator and screwer.
  • Ergonomics Process (collection, transport, assembly, fixing execution).
  • Electrical Connections.
  • Possibility Disassembly.

The compliance of the points used previously is evaluated by reference to the manufacturer's regulations relating to "Dimensions minimum manipulation of torque wrenches tightening" and the rules of ergonomics.

MACROCYCLE

dmu 5The MacroCycle is an Excel file that is used to identify areas of assembly line, the type of carrier, the 'height of the car, the operations).

How to use an initial input MacroCycle of an existing model will later be changed with the technologists operating, updating the assembly sequence and the macrocycle of operations; creating one dedicated to the model that we are simulating.

 

 

 

 

 

 

 

 

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WORK-FLOW FABRICABILITY / ASSEMBLY

dmu 9The report PPT in which are inserted the following data:

  • Assembly Sequence
  • Technical Requirements (Height Line, Used equipment)
  • Objective Simulation
  • Comments and Requests for any Changes
  • Positive or Negative Results of the Simulation

It needs to communicate in a quick and intuitive simulation results in order to communicate them to the various agencies of design, construction and simulation.