There’s wide application of stamping dies with various field in automobiles and electronics industry, such as poles & covers for new generation battery, automobile internal structure components, electrical parts, frames, terminals, shells…

The stamping dies has high requirements of the structural strength, stiffness, surface hardness, surface roughness and processing accuracy, so the tooling construction needs to have a high level of technology. We have experienced and professional staff that works with you every step of the way to assure your needs until satisfaction. Each parts are machined and assembled in-house to make sure the tools are in good quality control and competitive prices. We pride ourselves on solving all your die set tooling working problems and making this part of your process as stress free as possible.

Kunshan Dersun Precision Mould Co.,Ltd. works hard to comply with the drawing requirements of customers with a maximum precision of 0.002mm, and the maximum precision of a whole set of dies can be held within 0.005mm.

Designing

With an average age of 35 and industry experience of 10 years, our skilled design team specializes in development of stamping dies, from simple single-step to complex multi-step progressive stamping dies. We are ready to meet different requirements from customers in different industries.

CAD/3D engineering capabilities allows Dersun to design detailed components and part geometry. Once a product design is established, Dersun gets to work on the tool and die design to manufacture it. Precision design is critical, as the punches and dies must maintain proper clearance to manufacture quality parts. It is also complex, as a single tool print can contain hundreds of parts.

Our manufacturing and quality engineers also work together to reverse engineer parts and improve their design, tooling and fabrication.

Strip Layout

During strip layout development, engineers have to define the type of stamping operations required for the part production, the sequence of operations, the required number of stations and the operations to be performed at each station of progressive die.

In the design of blanking parts from strip material, the first step is to prepare blanking layout, that is, to layout the position of the workpieces in the strip and their orientation with respect to one another. While doing so, the major consideration is the economy of material. Another important consideration in strip layout is the distance between the blanks and the strip edge and distance between blank to blank. To prevent the scrap from twisting and wedging between the punch and the die. The distance must increase with material thickness. A general rule of thumb is to keep this distance equal to from 1 to 1.5times the material thickness.

Strip layout is important to have economy of press tool operation. Scrap strip layout gives an idea on the positioning of various punches, stops and pilots. It ensures the ideal location of blanks in the stock strip. Several trial layouts have to be made to confirm the maximum percentage of utilization of stock strip. The goal should be to have at least 75% utilization.

Tooling Design

After the approval of strip layout, Dersun will start with the 3D design for the tooling. In this section, the tooling are transferred to 3-dimensional environment with the process studies prepared.

The tooling design organizes components of different shapes, sizes, and composition into one unified concept. Competent, in-house die design can be a critical component of sound tool engineering and production.

A die is designed and built for one of two reasons: it may be either an entire press tool or it may be a component that is machined to receive a blank. The well-designed blueprint keeps waste at a minimum and prolongs tool life by ensuring the right materials and techniques are used in producing the die.

With our technical team that has served this sector for many years, we serve with optimum dimensions, minimum costs, high quality and fast die.

Construction & Assembly

After 3D design is approved, Dersun will start to build the mold. You can always trust our engineering specialist team to select the material, production processes and sequence of operations. Backed by over 18 years of experience, our experts offer optimizations that provide higher quality tools, faster lead times and less maintenance or cost. Our suite of metal stamping, CNC machining, and assembly processes help to maximize production speeds and help your bottom line.

Mold assembly is one of the most critical steps of mold making procedure, all the parts machined or purchased need to be put together and required to be work functionality. Mold assembly job requires comprehensive understanding of mold structure as well as stamping tooling. Quality of mold assembly determines the mold precision, stamping productivity. The work instructions below can be treated as a guide for mold makers.

All parts are machined correct and clean, the work tools required are available and the workplace is well organized, before assembling the mold, all the components must be check and verified.

Tryout & Stamping

In the tryout phase, we identify all the critical areas of the component and eliminate all weak points systematically and effectively. In the process, we install the tools in our press lines until the component or assembly can be produced in the quality you require. We do this in close coordination with you and our tool designers using cutting-edge, customer-specific process technology. With over 33 punch presses with different characteristics, we can react even more systematically and flexibly to your requirements and at the same time, provide you with maximum variability.

Through an efficient tool tryout, we can effectively deal with complex part geometry, high-strength steel materials and high quality demands. Our complete on-site tryout experiences ensure the stamping parts to meet the quality specifications and achieve smooth part production with a lower reject rate.