What is deep drawing?

Deep drawing is an often-used procedure regulated in DIN 8584. The Deep Drawing process is a tensile compression technique used to create a metallic hollow body. Moreover, professionals can use this technique to develop a hollow body into a workpiece using a smaller cross-section. 

Special deep drawing techniques involve pressing. Professionals work on flat sheets blank to create square or round shapes. During the conventional deep-drawing process, professionals use rigid tools to fabricate Unalloyed thin and extra-thin sheets, aluminum, stainless steel, copper, brass, and bronze into particular shapes.

A deep draw is feasible in large and small batch sizes and it is trendy in automotive, packaging, aviation, and model construction. The most common examples of deep-drawn particles are; automotive body parts, faucets, bathtubs, sinks, cooking pots, plastic buckets, and yogurt cups.

What are the pros and cons of deep drawing?

 Tensile compression forming

• It is also appropriate for miniature sizes and personal production.
• is adjustable in terms of fabric viscosity, figures, and sizes
• has quick response times
• Generates only cheap tool costs
• Permits the usage of different materials
• Access efficient prototyping
• is cost-effective

Deep drawing:

• Mandates comprehensive expert and content knowledge
• Needs adaptation of the production machine to the material
• is not appropriate for all parts

What is the effect of deep drawing on the workpiece?

Professionals create stresses through production-related displacement motions inside the crystal lattice, which cause the material to work hard. During the deep-drawing process, a variety of errors might arise. The following are examples of errors:

• non-compliance with manufacturing procedures
• erroneous material expansion and grain estimate

A lack of attention to the texture of the material

Technicians do Quality control during production or before the procedure using optical 3D measurement equipment to inspect the forming tool. They take measurements without making direct contact with the tool and save the results. In this approach, they may recreate the entire process without reassurance in the event of future issues. After that, they provide Full-field images through the scans, making manual adjustments easy. Directly on the production line, robot-guided sensors monitor the process.

How does sheet metal deep drawing work?

Sheet metal deep drawing that is automated and regulated.

A forming press, which comprises an upper and lower tool, is used to execute automatic deep drawing of sheet metal. An insertable die (drawing ring, bottom) and a punch are encircled by a blank holder in the forming press (on the top). This blank holder is just far enough away from the edge of the die to prevent wrinkles and creases from being caused by the punch.

The drawing ring and punch have rounded edges to ensure that the sheet blank slips smoothly over the edge of the die. The negative of the later deep-drawn workpiece is incorporated into the center area of the drawing ring.

The sheet metal forming procedure follows:

professionals place the sheet blank on the die, and the sheet metal holders secure it. The blank holder lowers itself. With pushing force, technicians force the punch onto the die basement. Then, they pull the sheet blank along with the punch. The top tool travels upwards after shaping to remove the deep-drawn part.