Line dies are employed for low-volume part production or extensive parts that cannot fit on a single press. A single feature is included at each station as the workpiece is moved between them. Combination dies enable multiple operations to be completed in a single pressing.
It possesses several advantages, including:
- Faster production – Numerous cuts can be produced using various dies.
- Placing the blank – Placing and moving the blank is simple. It is easily able to be flipped, turned, and moved.
- Produces complex geometries without the requirement for further computations or modifications.
- Die handling is more accessible and less expensive thanks to the reduced weight of dies.
- Tooling is more compact and easily accessible.
Some drawbacks of this process are:
- Machine restrictions – Combination dies cannot be loaded on all presses.
- Line die processing creates one part at a time, which makes it slower and much more time-consuming than progressive die stamping.
- Turnaround times – There is little production volume and little turnaround time.
- Costs – When multiple machines are required to perform a process, labor costs will rise since an operator must maintain and control each piece of equipment.
Compound Die Stamping
In compound die stamping, steel strips are run through a compound die that simultaneously cuts or punches out a portion. A knock-out ejects the part as the steel strip keeps feeding into the die. The method lowers labor costs and leads time by producing parts at a rate of over 1000 per hour in a matter of seconds.
Multiple dies are not necessary with the compound die stamping method, which lowers the cost of stamping. Consistency and other factors such as accuracy, flatness, and dimensional stability are guaranteed when only one die is used. Compound die stamping was chosen because it can cut costs and waste, which are very important in today’s industry.
Some Advantages of this process include:
- Effectiveness – Compound dies to eliminate the need for several dies by cutting intricate sections in a single pass.
- Less Expenditure – Compound dies stamping produces parts fast, which reduces production costs and time.
- Speed: Compound dies stamping can manufacture over 1000 parts per hour and produce parts in only a few seconds.
- Repeatability is ensured in compound die stamping by using a single die, which results in identically sized and shaped parts every time.
Some Disadvantages comprise of:
- Tool development is expensive since it takes time and money.
- Unsuitable for Short Runs – It is not appropriate for small part runs due to the expense of tool development.
- Post-process finishing is necessary because of the force of compound die stamping and includes deburring, clamping, and polishing.
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