Categories
Machinery

Double Action Deep Draw Press for Sale

Double Action Deep Draw Press for Sale

We are one of the Double Action Deep Draw Press for Sale manufacturers. Deep drawing process & Deep drawing press & Triple action deep drawing press. The double action deep draw press for sale is a hydraulic deep drawing press, designed to carry out 2 drawing operations one after the other to produce U-shaped sheet metal parts

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.

Double Action Deep Draw Press

Double Action Deep Draw Press
Double Action Deep Draw Press

A double-action deep draw press is a type of metalworking press that utilizes two independent rams to perform the drawing and trimming processes simultaneously. This enhanced capability allows for the production of more intricate and complex shapes compared to single-action presses.

Key Features of Double-Action Deep Draw Presses:

  1. Dual-Ram Design: The press employs two separate rams, one dedicated to drawing and the other for trimming. This enables precise control over both the drawing process and the trimming operation, ensuring consistent and high-quality results.
  2. Enhanced Shape Complexity: The ability to control the drawing and trimming stages independently allows for the production of more complex shapes with undercut features, re-entrant angles, and intricate contours.
  3. Improved Formability: The blank holder, which grips the blank during the drawing process, can be applied with additional pressure, enhancing the formability of the material and reducing the risk of cracking or buckling.
  4. Higher Productivity: The simultaneous execution of drawing and trimming operations streamlines the manufacturing process, leading to increased productivity and reduced cycle times.

Applications of Double-Action Deep Draw Presses:

  1. Automotive Industry: Producing complex car body panels, fenders, hoods, and other automotive components with intricate shapes and undercuts.
  2. Appliance Industry: Manufacturing cooking pots, pans, sinks, and other appliance components with intricate shapes and re-entrant angles.
  3. Aerospace Industry: Creating aircraft components, such as fuel tanks, fuselage sections, and engine housings, with complex geometries and tight tolerances.
  4. Electrical Industry: Producing electrical enclosures, housings, and components with intricate shapes and precise dimensions.
  5. Medical Device Manufacturing: Manufacturing medical implants, surgical tools, and other medical devices with complex shapes and delicate features.

Advantages of Double-Action Deep Draw Presses:

  1. Versatility: The ability to produce a wider range of shapes, including those with undercut features and re-entrant angles.
  2. Precision: The independent control over drawing and trimming allows for precise forming and trimming of complex shapes.
  3. Efficiency: The simultaneous drawing and trimming operations improve productivity and reduce cycle times.
  4. Formability: The enhanced blank holder pressure improves formability and reduces the risk of cracking or buckling.
  5. Material Savings: The ability to produce complex shapes with minimal material waste.

Conclusion:

Double-action deep draw presses are essential tools in industries that require the production of complex and intricate shapes with high precision and efficiency. Their versatility, precision, and material-saving capabilities make them a valuable asset in various manufacturing processes.

Characteristics of a Double Action Deep Draw Press

The choice of a material for a given application depends on its functional capacity and in-service requirements. Due to the high-pressure application and hazardous nature of liquefied petroleum gas (LPG), the fabrication integrity of LPG bottles is an important specification. The reliability of the gas bottles is fundamentally bound to the quality of the material, in addition to the forming and welding procedures.

As the bottles are subjected to a number of damage mechanisms such as mishandling during transportation, fatigue, corrosion, etc, any defects incurred during manufacturing will limit the service life and sometimes become unsafe. In general, the formability of the chosen blank depends on the process parameters such as blank holder force, lubrication, punch and die radii, and die-punch clearance, in addition to mechanical properties, thickness and part’s geometry.

Of all these parameters, the blank holder force and the friction condition between the blank and the forming tools play a major role on the flow characteristics of the blank. In deep drawing, using proper blank holder force is an essential criterion to restrict wrinkling tendency and avoid tearing of the blank. Similarly, proper friction condition enhances the flow of material into the die cavity.

Deep Drawing Press Applications

Deep Drawing Process
Deep Drawing Process

The objective of this investigation is to optimize both the blank holder force scheme and the friction condition in order to optimize the forming process of gas bottles. Fazzini et al. (2002) conducted an experimental study on the effects of welding defects in LPG bottles. The fabrication defects grow in service and cause the failure of the gas bottle if the growth reaches a critical value during service. The presence of defects dramatically reduces the reliability of the gas bottle due to stress concentration and residual stresses.

Neil Krishnan and Jian Cao followed a strategy to optimize the blank holder force history to maintain predetermined wrinkling amplitude under the blank holder (Krishnan and Cao, 2003). This was achieved by varying the blank holder force depending on the wrinkling tendency. With a similar objective, Sheng et al. (2004) used a feedback-controlled adaptive strategy to vary blank holder force based on the punch force evolution. Both flange and side wall wrinkling tendency was considered in this study to implement the strategy.

Deep Drawing Defects

Wrinklings as one of the deep drawing defects
Wrinklings as one of the deep drawing defects

A number of similar research works published emphasize the importance of variable blank holder force in the deep-drawing process. A brief review of various aspects controlling wrinkle and fracture in a sheet metal part has been presented in reference (Obermeyer and Majlessi, 1998). Thiruvarudchelvan (1995) devised hydraulic equipment to apply blank holder force proportional to punch force to suppress wrinkling. Traversin and Keygen (1995) utilized a closed-loop blank holder pressure regulation system based on punch force and wrinkle occurrence.

The system adjusts the blank holder force continuously to obtain the minimum force needed to avoid wrinkles. Gunnarsson et al. (1998) investigated degressive, constant, and progressive blank holder trajectories to establish the process window and LDR. For smaller blank sizes, the process window between the wrinkle and fracture limits can be increased using the degressive blank holder force.

In another study, a strong–weak variable blank holder force scheme has been used to increase the dent resistance of a shallow double-curved panel and decrease the springback (Gunnarsson and Schedin, 2001). Yoshihara et al. (2005) observed that a weak–strong variable blank holder force scheme improves the limit drawing ratio of magnesium blanks.

Deep Drawing with Double Action

Literature suggests that the limiting drawing ratio (LDR) is a function of in-plane anisotropy, strain-hardening exponent, friction coefficient, die radius, half-die opening, and yield strength (Duchene and Habraken, 2005; Leu, 1999; Verma and ˆ Chandra, 2006). The influence of these parameters can be estimated using finite element simulations thus saving material and time expended on experimentation.

A range of forming parameters can be used in the finite element simulations and the optimal values can be predicted at low CPU cost (Mamalis et al., 1997). This paper presents the investigation made on the effect of varying both the blank holder force and contact friction condition on the thickness distribution in the deep-drawing process. An appropriate method to maximize the minimum thickness and minimize the maximum thickness is suggested.

The Deformation Process with a Double Action Deep Draw Press

The flat blank for use in the analysis of deep drawing may be divided into three zones, X, Y, and Z [13], as shown in Fig. 1.1 As the punch is lowered into the die opening, several distinct phenomena occur. X, the outer annular zone consists of material in contact with the die.

Y, the inner annular zone is not initially in contact with either the punch or the die, and Z, the circular zone is only in contact with the flat bottom of the punch. As the deep-drawing operation proceeds, the outer flange portion of the blank, zone X will be subjected to a radial drawing tensile stress as it is drawn progressively inwards towards the die profile and the effect of continuously decreasing the radius in this zone is to induce compressive hoop stress, resulting in an increase in material thickness [3].

Then when the magnitude of these stresses exceeds a certain critical value, wrinkling and buckling of the flange may occur if the blank holder pressure is not high enough. The material in the inner parts of zone X is thinned by plastic bending under tensile stress as it passes over the die profile.

Deep Drawing Process

Deep Draw Press

There are many processing and material parameters that are affecting the deep drawing process. Some of the functions are there which cover most of the material and processing parameters affecting the thickness distribution and also the quality of the product. During the last decade, many researchers have provided those functions which increase the
the efficiency of the process and reduce undesirable features like earing and wrinkles.

Some of the functions which are covering most of the material and processing parameters and also the effect of different material and processing parameters are shown. So the effect of different parameters on the deep drawing and introduction to those functions are given in this review paper.

Deep Draw Press

A double action deep draw press is a type of machine used for metal forming that uses two rams or cylinders to create a deep drawn part. In a double action deep draw press, the upper ram or cylinder provides a blank holder force while the lower ram provides the forming force. This allows for the formation of more complex shapes with deeper depths than a single action deep draw press.

The double action deep draw press can be used in a variety of industries, including automotive, aerospace, and electronics. It is commonly used in the production of parts such as cups, bowls, and other hollow components.

The size and specifications of a double action deep draw press can vary depending on the specific application and production requirements. They are typically designed to handle large sheets of metal and can be automated for increased efficiency and precision.

Overall, double action deep draw presses are an important tool in the manufacturing industry, allowing for the efficient and precise production of complex metal parts with deep draws.