As an engineer, you are always looking for the most efficient and cost-effective production methods. Deep drawing is a versatile technique that can produce excellent results, but when is it the right choice? And how do you make sure your design is optimally suited for this process?

Wondering what micro deep drawing can do for your issue? If so, please contact us.

Deep drawing is a forming technique in which metal sheet is transformed under mechanical pressure by plastic deformation into a seamless three-dimensional shape. A draw ring is used, whose contour is the same as the outside of the product to be manufactured. In addition, there is a mandrel, which has an opposite shape and thus fits into the draw ring. The material to be machined, the plating, is placed on the pull ring and held by a bending holder with spring pressure. A press then pushes the mandrel down and the platine is pressed into the shape of the draw ring.

Many people confuse deep drawing with stretching; however, there is a fundamental difference between these techniques.

In stretching, the material is clamped and pushed through a mandrel into the hole. The result is that the material stretches and becomes thinner.

In deep drawing, the material is also clamped, but with a defined force which still allows the clamped material to move and “flow” into the hole. As the material is pulled into the hole and forced from a larger diameter to a smaller diameter, pressure is created in the material perpendicular to the direction of pull. The strain in the length direction is therefore compensated by the pressure in the width direction. As a result, the thickness of the material does not change. Thus, a product is made with a uniform wall thickness.

Many people confuse deep drawing with stretching; however, there is a fundamental difference between these techniques.

In stretching, the material is clamped and pushed through a mandrel into the hole. The result is that the material stretches and becomes thinner.

In deep drawing, the material is also clamped, but with a defined force which still allows the clamped material to move and “flow” into the hole. As the material is pulled into the hole and forced from a larger diameter to a smaller diameter, pressure is created in the material perpendicular to the direction of pull. The strain in the length direction is therefore compensated by the pressure in the width direction. As a result, the thickness of the material does not change. Thus, a product is made with a uniform wall thickness.

See the image below where the left is pulled deep and the right is stretched.

Also curious what deep drawing can do for you? Get in touch with us!

Deep drawing is one of the most popular methods of metal sheet processing. In hot stamping, flat sheet is transformed into a three-dimensional product using a punch and draw ring. See this article for a further explanation of the deep-drawing process and its differences from stretching material.

Micro deep drawing has many applications such as disposables for in medical applications or housings for sensors. It is widely used for parts in the automotive, electronics, optical, medical and aural industries, among others. This is due to the following advantages the process has.

Wondering what micro deep drawing can do for your issue? If so, please contact us.

Deep drawing is a versatile technique and is used in a variety of manufacturing applications. Deep drawing is a good alternative to turning or milling when quantities increase. It can also be a good alternative for other products made from sheet metal that are currently made by bending and setting. There are significant advantages to deep drawing such as cost savings in material consumption, high scalability, low production costs and stable dimensions.

Demanding applications where, for example, gases or liquids need to be analyzed are often measured by optical sensors. These include infrared and UV light in applications such as spectroscopy, radiometry and pyrometry. Our micro deep drawing products are often used as covers for these sensors to direct light onto the sensor in a controlled manner. Materials are often corrosion resistant such as stainless steel, copper and nickel.

Deep drawing components for defense are often used in security applications. Measuring and detecting gases or liquids require detectors with high precision and extreme durability. Our products are often used as essential equipment components. Heat transfer, gas measurements or protecting vital components are just some of these applications.

Wondering what micro deep drawing can do for your issue? If so, please contact us.

Drawing is a popular method for manufacturing complex hollow products with an opening on 1 side. Most fabricators have learned to design a part for techniques such as turning and milling, however, designing a deep-drawn part requires a different way of thinking. Deep-drawing is one of many sheet metal fabrication techniques available, including bending, cutting, hydroforming, forging, thin-drawing, punching, flanging, beading and stretching

.

In essence, the biggest difference between machining and deep drawing is the fact that machining removes material and deep drawing deforms material. Understanding these two key differences is the core to successfully designing a deep-drawn part. Below is a cross-section of the starting material for machining and deep drawing and the corresponding end result.

Because of the differences between these techniques, it is important to think about the advantages and disadvantages that both technologies have to offer. See an article here that includes more information about the different techniques. Below is a brief summary of the main differences

.

Products with walls thicker than the initial material (plating) are not possible to make using deep drawing, see left. Sometimes there are possibilities to draw the material thin. This involves starting with a product with a thick wall thickness and thinning the wall lengthwise. In this process the bottom retains its thickness and the wall becomes thinner and higher. Ask us about the possibilities

Vertical cutting is and basic simpler because this cutting motion is in line with the motion of the press. Cutting perpendicular to the wall is possible, but will require more complex tooling with the potential for higher wear. In addition, it is also possible to perform the cutting using secondary techniques outside the deep drawing process. These include laser cutting. Perpendicular cutting is therefore more costly.

Products with a small diameter wall thickness ratio cannot be pulled deeply. The draw mandrel transfers the force of the press to the bottom of the product. The example below shows that the walls are so thick that the bottom has to handle too much force to deform the walls. Therefore, if a small diameter is desired, it is necessary to also adjust the thickness of the material accordingly.

These are just a few examples to consider when designing a deep-drawn product. Look here for more information on deep drawing or go to the main page for more information. To find out if deep drawing is right for your application, contact us or email info@mubion.com