Sheet Metal Stamping is a low-cost high-speed manufacturing process that produces a high volume of identical metal components, which has contributed importantly to many industrial applications such as vehicles, equipment, electronics, appliances, tools, and so much more. For example, sheet Metal Stamping provides a large number of wholesale machine parts for Mechanical Industry.
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At AM Industries Vietnam, our experts can produce highly detailed custom sheet metal stampings and components that meet all customer design specifications. We serve customers across all industries and deliver short- to medium-run metal stampings and sheet metal prototyping for parts and components of all sizes and shapes.
To learn more about our precision metal stampings and custom steel fabrication capabilities, speak with an expert or give us an at , and we’ll gladly answer your specific questions.
Sheet Metal stamping is a cold-forming process that uses dies and stamping pressing machines to shape sheet metal into various forms. Pieces of flat sheet metal typically referred to as blanks, are fed into a sheet metal stamping press that uses a tool and dies surface to transform the metal into a new shape. The material is placed to be stamped between die sections, where the use of pressure will form and shear the material into the desired final shape for the product or component.
Stamping operations are suitable for both short or long production runs, and be conducted with other metal forming operations, and may consist of one or more of a series of more specific processes or techniques that we will mention below.
With stamping presses built to handle capacities up to 440 tons and precision stamping dies and tooling that we make in-house, we can create parts as thin as 0.005” while maintaining tolerances that often exceed industry standards.
Metal stamping machines may do more than just stamping; they can cast, punch, cut, and shape metal sheets. Machines can be programmed or computer numerically controlled (CNC) to offer high precision and repeatability for each stamped piece. Electrical discharge machining (EDM) and computer-aided design (CAD) programs ensure accuracy
Blanking is a steel manufacturing process in which a flat, geometric shape (or “blank”) is created by feeding a coil of sheet metal into a press and die. The blank is punched out from a large metal sheet in this process. Here’s a graphic representation of the process:
If a part requires slots, holes, or other cutouts, piercing can be employed. Piercing, which can be performed simultaneously with blanking, punches the requisite shapes out of the metal sheet.
CNC punching is an important option for generating sheet metal blanks. Punching is an inherently faster operation that lends itself to metal fabrications that have many similar features or where there is a higher volume of parts per run.
Metal embossing is used to impart a design upon metal sheets. The metal is pushed with an embossing tool or stylus to create a raised effect on the opposite side. By placing the metal sheet on a rubber or foam pad, the positive impression has a smooth surface that will shine or can take pigment.
Bending refers to the general technique of forming metal into desired shapes such as L, U, or V-shaped profiles. The bending process for metal results in a plastic deformation that stresses above the yield point but below the tensile strength. Bending typically occurs around a single axis.
When you are designing the bends into your stamping metal part, it is important to allow for enough material — make sure to design your part and its blank so that there is enough material to perform the bend. Some important factors to remember:
Coining is a bending technique wherein the workpiece is stamped while placed between a die and the punch or press. This action causes the punch tip to penetrate the metal and results in accurate, repeatable bends. The deep penetration also relieves internal stresses in the metal workpiece, resulting in no spring-back effects.
Flanging is the process of introducing a flare or flange onto a metal workpiece through the use of dies, presses, or specialized flanging machinery.
We work with a wide range of custom materials for your projects. If you don’t see your preferred material option listed below, contact us to discuss your project’s specific requirements.
Our Custom Sheet Metal Stamping service provides metal forming processes that apply custom tooling and techniques to produce parts specified by the customer. We could offer a wide range of industrial and application parts and components that employ custom stamping processes to meet high-volume production needs and ensure all parts meet exact specifications.
Custom Sheet Metal Stamping Projects
Our engineers can work on a wide range of sheet metal part projects for clients across various industries. To better illustrate the versatility of custom stamped metal parts, we’ve outlined a few recent projects completed by AM’s engineers below.
An American client in the automobile industry approached AM to make their custom metal stamps with special requirements for their vehicle-specific kits.
They needed custom stainless steel brackets with no sharp edges at the final products and were having trouble finding a supplier who would provide a high-quality design at an affordable price within a reasonable timeline.
To meet the client’s unique request for precise thickness and the complex design requirements, we used a material blanking and bending technique that allowed us to create a smooth surface and exact shape as designed, limiting costs and reducing lead times.
In another instance, we were asked to remake an existing electrical cable tray; our client was looking for a higher-quality product at a lower price with shorter lead times.
The design was not highly complex, but this application includes a number of small parts, therefore it inherently presented strict size limitations. The manufacturing process was complicated and expensive, as some of the client’s jobs required a fully completed powder coating and others did not.
Working with a sample tray, our team at AM was able to reverse engineer the part and its tool. From here, we designed a new stamping die set that allows us to manufacture the parts easier and lower cost.
See more our case studies here: https://aminds.com/case-studies/
Progressive die stamping uses a type of tooling called a progressive die, which contains multiple stamping stations to carry out simultaneous operations on a sheet metal strip. By combining all the necessary tools into one die set, progressive die stamping is a great solution for high-volume production runs.
Transfer die stamping is similar to progressive die stamping, but the part is separated from the metal trip early on in the process and is transferred from one stamping station to the next by another mechanical transport system, such as a conveyor belt. This process is usually used on larger parts that may need to be transferred to different presses.
Four-slide stamping is also called multi-slide or four-way stamping. This technique is best-suited for crafting complex components that have numerous bends or twists. It uses four sliding tools, instead of one vertical slide, to shape the workpiece through multiple deformations. Two slides, or rams, strike the workpiece horizontally to shape it, and no dies are used. Multi-slide stamping can also have more than four moving slides.
Four-slide stamping is a very versatile type of stamping, as different tools can be attached to each slide. It also has a relatively low cost, and production is fast.
Fine blanking, also known as fine-edge blanking, is valuable for providing high accuracy and smooth edges. Usually done on a hydraulic or mechanical press, or by a combination of the two, fine blanking operations consist of three distinct movements:
Fine blanking presses operate at higher pressures than those used in conventional stamping operations, hence tools and machinery need to be designed with these higher operating pressures in mind.
The edges produced from fine blanking avoid fractures as produced with conventional tooling and surface flatness can exceed that of other stamping methods. Since it is a cold extrusion technique, fine blanking is a single-step process, reducing the overall costs of fabrication.
Deep drawing involves pulling a sheet metal blank into the die via a punch, forming it into a shape. The method is referred to as “deep drawing” when the depth of the drawn part exceeds its diameter. This type of forming is ideal for creating components that need several series of diameters and is a cost-effective alternative to turning processes, which typically require using up more raw materials. Common applications and products made from deep drawing include:
Short-run metal stamping requires minimal upfront tooling expenses and can be an ideal solution for prototypes or small projects. After the blank is created, manufacturers use a combination of custom tooling components and die inserts to bend, punch or drill the part. The custom forming operations and smaller run size can result in a higher per-piece charge, but the absence of tooling costs can make short-run more cost-efficient for many projects, especially those requiring fast turnaround.
Sheet metal stamping has several advantages including lower die costs, lower secondary costs, and a high level of automation compared to other processes. Metal stamping dies are less costly to make and maintain than dies used in other typical operations. Cleaning and plating are also less expensive than identical treatments for other metal manufacturing techniques. Stamping machines are generally simple to automate and may use sophisticated computer-control systems to give more precision, faster output, and shorter turnaround times. The high level of automation also reduces labor costs.
One of the disadvantages of stamping is the higher cost of presses. The dies must also be acquired or created and producing custom metal stamping dies is a longer pre-production process. Dies can also be difficult to change if the design must be altered during production.
We produce only the highest quality custom metal stampings. Our workforce is dedicated and committed to quality through Quality Circle involvement. Our products are high-quality and are certified to ISO : certified, AU, US, EU, or CA standards.
Stamping parts are used in a variety of applications, especially those involving three-dimensional designs, lettering, or other surface engraving features. Such stamping products are commonly produced for home appliance manufacturers, automotive companies, the lighting industry, telecommunications services, military and defense, aerospace industries, medical equipment manufacturers, and electronics companies. Odds are you have a product in your home that has parts created through metal stamping because it is a process used in everything from your household appliances to your cars.
The specific products and components can range from simple stamping items, such as metal clips, springs, weights, washers, and brackets, to more complex designs, such as those found in engine bases or friction plates. This process is used for producing both parts for large machinery and also incredibly detailed small parts. Micro-precision stamping can create parts with diameters of up to 0.002 inches.Electronic stampings are electronic components manufactured through the metal stamping process. They are used in a variety of industries, from home electronics and appliances to telecommunications and aerospace. Electronic stampings are available in several metals, including copper, copper alloys, aluminum, and steel, as well as more expensive metals, such as platinum and gold. Electronic components produced by the metal stamping method include terminals, contacts, lead frames, springs, and pins. They can be created from ferrous or nonferrous materials. Metal stampings find wide use in computers, electronic equipment, and medical devices. Because of the specialized shapes that can be made by the various stamping processes, many electronics are made by this cold forming process.
Overly narrow projections should generally be avoided in stamped products, as these may be more easily distorted and impact the perception of quality in the finished product.
Where possible, designs should be based on the use of existing dies for standard shapes and bends. The need to create a custom die for stamping will increase initial tooling costs.
Avoidance of sharp internal and external corners in stamped product designs can help reduce the potential for the development of larger burrs in these areas and sharp edges that require secondary treatment to remove. Also, a great potential for stress concentrations exists in sharp corners, which may cause cracking or subsequent failure of the part through extended use.
Overall dimensions for the finished product are going to be limited by the available dimensions of the sheet metal sheets or blanks, and these limits need to be factored in for the material consumed in folds on edges or flanges and any additional material removal or use. Very large products may need to be created in multiple steps and mechanically joined together as a second step in the production process.
For punching operations, consider both the direction of punching as well as the size of the punched feature. Generally, it is best to do punching in one direction, so that any sharp edges produced by the punch will all be on the same side of the workpiece. These edges can then be hidden for appearance purposes and kept away from general access by workers or product end-users where they might represent a hazard. Punched features should reflect the thickness of the raw material. A general rule is that punched features should be at least twice the material thickness in size.
For bends, the minimum bend radius in sheet metal is roughly the same as the material thickness. Smaller bends are more difficult to achieve and may result in points of stress concentration in the finished part that may subsequently cause issues with product quality.
When drilling or punching holes, performing these operations in the same step will help to assure their positioning, tolerance, and repeatability. As general guidelines, hole diameters should be no smaller than the material thickness, and the minimum spacing of holes should be at least twice the material thickness apart from each other.
Bending operations should be performed with awareness of the risk of distorting the material, as the material on the interior and exterior surfaces of the bend point are compressed and stretched respectively. The minimum bend radius should be approximately equal to the thickness of the workpiece, again to avoid stress concentration build-up. Flange lengths should be more like three times the workpiece thickness as a good practice.
Are you searching for a reliable precision sheet metal stampings manufacturer at a reasonable cost? Look no further than AM Industries Vietnam. Request a quote on your custom sheet metal stamping project or contact us to find out what we can do for you.
The market for mechanical stamping is still very promising, and investing in mechanical stamping is a very worthy option to consider. This guide will provide detailed answers to the knowledge and questions about Mechanical stamping and will hopefully help you in your choice.
Mechanical stamping is a metal stamping and forming machine that uses preformed dies and pressure to form sheet metal blanks into products and parts. The manufacturer uses an automatic or manual feeder to insert the sheet metal into the stamping press between the tool and the die surface. The press descends onto the sheet metal and uses compressive forces to press the material into the die to form the desired shape.
Metal can be shaped or cut precisely to your specifications. The process involves forming, stretching, trimming, punching and/or perforating the metal with a die. Typically, the process is available in sheet metal and coil form.
The press consists of a pad and a plunger. The stamping process works by forming the metal between the two halves of the stamping tool. The top part is attached to the slide of the press, while the bottom part is attached to a fixed pad (or bed). Some large presses also have a die pad integrated into the pad plate that helps apply the crimping force
Mechanical stamping press is generally distinguished by the body structure type and application characteristics.
According to the body structure type: there are open and closed two types.
Open type presses are mostly vertical. The body is C-shaped, the front, left and right side open, simple structure, easy to operate, The body is C-shaped, the front, left and right side open, simple structure, easy to operate, the body can be tilted to a certain angle, so that the workpiece slides down into the hopper, easy to achieve automation, But the open body rigidity is poor, affecting the accuracy of the parts and die life, only for 40 ~ kN of small and medium-sized presses.
The body is H-shaped, the front and rear of the body open, good rigidity, high precision, the size of the table is larger, suitable for pressing large parts, The body is H-shaped, the front and rear of the body open, good rigidity, high precision, the size of the table is larger, suitable for pressing large parts, nominal working force of ~ kN. cold extrusion, hot die forging and double-action deep drawing and other heavy presses use closed body.
According to the application characteristics: there are double-action deep drawing press, multi-station automatic press, rotary head press, hot die forging press and cold extrusion press.
Mechanical stamping offers high production speeds and allows for mass production. On Mechanical stamping, only a few standard parameters can be set, so the machine is not as flexible or versatile as a hydraulic press. Mechanical stamping usually requires an operator to manage the operations associated with the strikes. Therefore, it is necessary to equip such machines with suitable safety devices, such as foot switches, grills, etc.
MachineMechanical stamping are usually high precision machines and can guarantee repeated strikes over time. On the other hand, they run only on a given course. Therefore, it is important to check that the opening distances are appropriate for the part size before and after manufacturing.
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MachineMechanical stamping makes forming metal materials easier and more efficient. Understanding the different types and how they work will allow you to choose the one that best suits your business.
Mechanical stamping machines can stamp and form a variety of metals, including ferrous and non-ferrous metals. Typically the type of metal chosen for a metal stamping part depends greatly on its intended application as well as the size, shape and design of the product.
Ferrous metals containing iron are usually magnetic and tend to be strong and durable. Steel is a well known ferrous metal with a wide range of uses. Ferrous metals are valued for their high strength, but their iron content makes them more susceptible to rust and corrosion than non-ferrous metals. Carbon steel is the most commonly used ferrous metal in metal stamping applications because of its extremely high tensile strength.
Non-ferrous metals and alloys do not include iron and are therefore not magnetic. Non-ferrous metals are very popular in a variety of stamping products because of their high ductility and wide range of useful properties. The most common non-ferrous metals used in stamping applications include aluminum, tin, copper, brass, bronze, gold and silver. Aluminum is particularly popular in stamped parts and products due to its low cost, lightweight strength and corrosion resistance.
When selecting the right material for your metal stamping application, it is also important to consider the material composition of the tooling you will be using. While most dies consist of tool or hardened steel, different workpiece materials or processes may require alternative die materials, such as aluminum or mild steel.
Many Chinese Mechanical stamping manufacturers combine American, European and domestic technologies with Chinese manufacturing advantages.
This alone gives Chinese companies the upper hand over all of their global competitors. As a result, most Chinese Mechanical stamping is cost competitive with American and European made machines.
You will find that most European and American companies have OEM partners in China. Nevertheless, using this business model, you will pay more for Mechanical stamping.
In short, it is cost effective to source Mechanical stamping from China. Always strive for the best deal.
Before you start browsing and selecting a Mechanical stamping machine, write down a general list of the jobs you regularly perform. Whether it's drop stock, stamping, punching, bending, deep drawing, metal forming or molding, know how you will use your new press.
This will tell you which processes you need the machine Mechanical stamping to perform.
Modern presses for mechanical stamping have a wide range of tonnage and many features. Many make it easy to control pressure and plunger speed. These presses are highly customizable and can easily handle a variety of jobs. Use a full-featured press that can handle many types of jobs from the master list of processes you often need to complete.
The latest mechanical presses can handle more complex jobs faster and more efficiently than previous presses. They are equipped with programmable electronic control panels. This means you can customize your press features to individual jobs and their specifications. You get a consistently high level of output excellence at a faster rate.
Most machine shops need to deliver high-end results for their customers. That's why it's critical to choose a machine press that offers precision and accuracy for every job. Choose a model with an adjustable power function and lateral movement slide control. This can prevent problems with unbalanced loads.
Choose technology that allows your operators to take full advantage of the press, using its design and production techniques creatively. If you need low tonnage, use a larger press. Smaller bed presses can handle high tonnage and high quality finishes, using side action, under action and multi-action.
Modern machineMechanical stamping saves space and minimizes maintenance costs. They take up less than half the space of machineMechanical stamping. This means you can make efficient use of store space. Ensure that spare parts for the press you are working on are easy to find, thus limiting potential downtime.
It is important to know how the starting tonnage is calculated in order to choose the most suitable mechanical stamping press.
The calculation formula is as follows.
P= p/q= (64-73) F/q where P---- screw press tonnage (KN)
p - the deformation force required for die forging (KN)
F - forging together with the projected area of the flying edge (cm 2)
(64 to 73) - the coefficient is taken as 73 for complex forgings and 64 for simple parts.
q - is a deformation coefficient, which can be divided by stroke and deformation work in spiral press die forging.
Forgings require a larger deformation stroke, deformation and deformation work in die forging, q = 0.9 to 1.1.
When forgings need smaller deformation stroke and deformation work of die forging q=1.3.
When the forgings need only a small deformation stroke, but need a large deformation force for fine pressing q=1.6.
P=(17.5~28)KF total (KN) where the total projected area of forging together with flying edge (㎝2)
K - steel grade coefficient, refer to the third unit of the equipment tonnage calculation chapter; ((17.5-28) - coefficient 28 is used for difficult deformation (such as extrusion deformation, deformation with flying edges, etc.) and high productivity, and vice versa. The above formula applies to the calculation of the required equipment tonnage hammering 2-3 times.
If a single stamping is required, it should be doubled as calculated.
Mechanical stamping machines should be maintained in a standard way during daily use. There is no doubt that normal and reasonable maintenance can greatly save production costs for later maintenance and bring greater cost benefits.
Before each shift, operate the brake shaft of the manipulator with full lubricating oil at each point, and lubricate the clutch part with oil pressure once a day. Clean the machine before stopping each shift.
Inspect all aspects of the mechanical press. Check fasteners and make up missing external parts; check the clutch, springs and belts; check the lubrication device of the machine; check the damage and aging of the circuit and the normalcy of the motor and solenoid; check the accuracy and wear of the crankshaft guide; check the brake, clutch, slider, closing block and closing ring; check the electrical control part; check and adjust the body table connecting bolts.
According to the different types of presses and processing requirements, develop targeted and practical safety operating procedures, and conduct the necessary job training and safety education. Using units and operators must strictly comply with the design and manufacturing units, provide safety instructions and operating procedures, and use and maintain them correctly.
Pay attention to safety during maintenance to ensure that the locking and opening process is performed correctly to ensure the safety of maintenance personnel and that the sleeve is placed at the bottom of the stroke before performing maintenance work on the brake. If this is done, the sleeve does not need to be locked.
Shop floor environmental controls. A clean press allows the operator or maintenance personnel to identify problems as soon as they occur. For example, if the press is clean, it is easy to identify the location of oil leaks, air leaks, breaks, etc.
Make sure the mechanical press is in a balanced position. A precisely balanced press will work better, so it is best to check it once a year. Pneumatic systems that operate pneumatic braking and balancing systems need to be checked for air leaks, as improper air pressure can affect the performance of the braking and balancing systems and they control the stopping time of the press, which can put the operator and the equipment at risk if there is a problem. In addition, all pneumatic systems have regulators, lubricators and water reservoirs. Water that accumulates in the gas lines should be removed daily.
Replace lubricants and screens regularly. Improper maintenance of the press lubrication system is also a major cause of press downtime. For a variety of reasons, many press operators operate screen-equipped circulating oil systems without changing screens regularly. Be sure to change the screen at the same time as the oil change and generally change it frequently.
Precautions to be observed before and after starting the Mechanical stamping machine
Check the safety conditions around, in front of, behind, and above and below the machine before starting.
Check whether the air, oil and electric circuits are normal.
Turn on the power to check whether the air supply, oil supply and hydraulic overload protection are normal, and check whether the pressure and electrical indicators of each pressure gauge are normal.
Start, while observing the start electrical status and machine tool mechanical status.
First place the machine in the micro position pointing point to start rotation, while observing whether the state of the machine is normal such as: transmission, slider, balance cylinder, oil supply, etc.
Machine start single, continuous action, check the mechanical transmission, sound, current is normal.
Commissioning, test the performance of each machine such as: adjust the closing height, cam control angle, flywheel brake, air cushion, precision, move the table, manual unloading, etc.
Continuous machine observation such as: whether the alarm, each drive and guide temperature change, air pressure, sound, oil supply, oil circuit, etc.
With the continuous development of stamping technology, the momentum of Mechanical stamping can be improved. High stamping accuracy, good surface quality and long die life.
The mechanical precision automatic presses manufactured by JDM have the following features.
The machine body is welded with high quality steel plate, which eliminates tension and improves the stability of machine accuracy.
To ensure the smooth operation of the machine, a symmetrical two-piece slide design with balancer is adopted.
The accuracy of mold adjustment can reach 0.1mm, which is safe, reliable and convenient.
The crank, gear and connecting rod are oxidation hardened and milled, which have super comprehensive mechanical properties and durable functions.
Reasonable structure design, easy for automatic production and assembly line production.
Adopt reliable high-strength clutch/brake, double solenoid valve and overload protection device to ensure safe production in all aspects.
Adopt high quality alloy steel, double crank, wide working center and connecting rod structure. Optimized design is suitable for pressing large size, large impact load dies and eccentric dies.
Adopt closed-loop circuit, compatible with any automatic equipment.
After purchasing our mechanical presses, we will provide you with long-term service. We will be happy to provide you with the necessary assistance during use. The maintenance effort during the use of the machine Mechanical stamping can be greatly reduced by routine maintenance and inspection. If problems arise, we will do our best to help you get back to production in no time. With our experienced technical team, we can provide you with sound advice on Mechanical stamping.
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