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Deep Draw Press for Sale

Deep Draw Press for Sale

We are one of the Deep Draw Press for Sale manufacturers. Deep drawing process & Deep drawing press & Double action deep drawing press & Triple action deep drawing press

Deep drawing is a manufacturing process of forming sheet metal stock, called blanks, into geometrical or irregular shapes that are more than half their diameters in depth. Deep drawing involves stretching the metal blank around a plug and then moving it into a moulding cutter called a die. Common shapes of deep drawn products including cylinders for Aluminium cans and cups for baking pans.

Deep Draw Press

A deep draw press is a type of metalworking press used to transform flat metal sheets into three-dimensional shapes. It is a versatile tool that can produce a wide range of products, including cooking pots, pans, automotive parts, and electrical enclosures.

How a Deep Draw Press Works:

  1. Blanking: A stamping press is used to cut out a flat blank from a sheet of metal. The blank size is slightly larger than the desired final shape to allow for metal flow during the drawing process.
  2. Heating: The blank may be heated to improve its formability and reduce the risk of cracking. Heating is particularly important for thicker materials or complex shapes.
  3. Loading: The blank is placed on the blank holder of the deep draw press. The blank holder firmly grips the blank around its edges, preventing it from wrinkling or buckling during the drawing process.
  4. Drawing: The punch, a tool with the desired shape of the final product, descends into the blank holder, forcing the blank into the desired shape. The blank flows over the punch, forming the desired three-dimensional shape.
  5. Trimming: Excess material around the edges of the drawn part is trimmed away using a trimming die. This ensures that the final part has a clean edge and meets the desired dimensions.

Types of Deep Draw Presses:

  1. Single-Action Deep Draw Presses: These presses use a single ram to perform both the drawing and trimming operations. They are relatively simple and inexpensive, but they are limited in the complexity of shapes they can produce.
  2. Double-Action Deep Draw Presses: These presses have two rams, one for drawing and one for trimming. This allows for more complex shapes to be produced, as the drawing ram can continue to draw the blank while the trimming ram trims the edges.
  3. Triple-Action Deep Draw Presses: These presses have three rams, one for drawing, one for trimming, and one for ejecting the finished part. They are used for producing the most complex shapes, such as those with undercut features or re-entrant angles.

Applications of Deep Draw Presses:

Deep draw presses are used in a wide variety of industries, including:

  • Automotive Industry: Producing car body panels, fenders, hoods, and other automotive components.
  • Appliance Industry: Manufacturing cooking pots, pans, sinks, and other appliance components.
  • Aerospace Industry: Creating aircraft components, such as fuel tanks, fuselage sections, and engine housings.
  • Electrical Industry: Producing electrical enclosures, housings, and components.
  • Construction Industry: Manufacturing architectural panels, roofing components, and ventilation ducts.

Benefits of Using Deep Draw Presses:

Deep draw presses offer several advantages over other metalforming methods, such as stamping and casting:

  • Versatility: Deep draw presses can produce a wide range of shapes, from simple cylinders to complex geometries.
  • Accuracy: Deep draw presses can achieve high levels of accuracy and consistency in the dimensions of the finished parts.
  • Efficiency: Deep draw presses can produce parts quickly and efficiently, making them a cost-effective manufacturing method.
  • Material Savings: Deep draw presses can produce parts with minimal waste of material.
  • Strength and Durability: Deep-drawn parts are generally stronger and more durable than those produced by other methods.

In conclusion, deep draw presses are versatile and powerful tools that play a crucial role in various industries. Their ability to produce complex shapes with high precision and efficiency makes them an essential part of modern manufacturing.

Irregular items, such as enclosure covers for truck oil filters and fire extinguishers, are also commonly manufactured by the deep drawing method. The drawing of sheet metal or commonly known as deep drawing is a process which a punch is used to force a sheet metal to flow between the surfaces of a punch a die. As a result, a cylindrical, conical or box-shaped part is formed in the die with minimal material scrap (Boljanovic, 2004). In this process, a flat sheet metal was kept under a blank holder force (BHF).

The blank holder should allow the material to slide into the die surface but at the same time, that force must be a great enough to prevent wrinkling of the sheet as it drawn as shown in Figure 2.1. The punch transferred the force through the punch and thus the punch transmits the force through the walls of the cup as it drawn into the die cavity (Singh, 2008). In deep drawing process, it can be divided into two types that is pure bending and ironing.

Deep drawing
Deep drawing

Pure Bending in Deep Draw Press

Pure bending is type of deep drawing without a reduction in the thickness of the workpiece material while in ironing, it a deep drawing with a reduction in the thickness of the workpiece material (Boljanovic, 2004). A schematic illustration of these two types of deep drawing is shown in Figure 2.2. From the Figure 2.1, it is clear that the basic tools for deep drawing are the punch, the drawing die ring, and the blank holder. However, some products cannot be drawn in a single draw and requires secondary drawing that is redrawing process. As a result, the design of the die will be more complicated as a progressive die is normally required to allow multiple drawing operations under one production line.

A percentage reduction of 48% is considered excellent on the first draw. Succeeding draws are smaller. There should be no appreciable change in the thickness of the material between the blank and the finished part.

Results of deep drawing are mostly empirical in nature and research has been done only limited almost exclusively to the drawing of cylindrical cup. For other shapes theoretical analysis is too much complicated and has no practical significance (Singh, 2008). In deep drawing process, there are several factors that can be affected the process which are categorized into two groups:

Materials for Deep Draw Press

Material and friction factors, and tool and equipment factors. Thus it is important before running the deep drawing process, these factors was considered well to prevent an undesirable result like earing, fracturing, and wrinkling. In Figure 2.3, it shows clearly these two factors (material and friction, tool and equipment) that need to consider in deep drawing process. Recently more studies have been develop by refer to these factors in order make an improvement while running deep drawing process.

Formability Test

Sheet metal formability is undergoing a transition from art to science.
Formability within each forming mode can be related to specific metal formability parameters. The successful sheet metal forming process which is can be converts initially from flat to desired shape. There are many major failures that always happened such as splitting, wrinkling or shape distortion.

The formability test is use to access of sheet to be deformed into useful part. The testing can be divided into two types: Intrinsic and simulative. The intrinsic tests measure the basic material properties under certain stress strain states, for example the uniaxial tensile test and the plane strain tensile test. Traditional evaluation of formability is based on both intrinsic tests and simulative tests.

The intrinsic tests measure the basic characteristic properties of materials that can be related to their formability. These tests provide comprehensive information that is insensitive to the thickness and surface condition of the material. Examples of intrinsic tests are Hydraulic Bulge test, Marciniak In-Plane Sheet torsion test, and Miyauchi shear test.

The simulative test can provide limited specific information that may be sensitive to factors other than material properties like the thickness, surface condition, surface lubrication and etc. Subject the material to deformation that closely resembles the deformation that occurs in a particular forming operation.