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Mechanical press or servo press

Views: 0     Author: Site Editor     Publish Time: 2023-11-23      Origin: Site


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Determining whether your next press installation will be a modem mechanical or a servo mechanical can

be difficult. Materials, part complexity cost are factors, and automation and dies are important considerations.

While a place for traditional mechanical press technologies will exist in this new age,servo technologies are starting to become more of a necessity for certain stamping manufacturing operations. In other cases, a mechanical press will do the job well.

mechanisms to gain speed, but for long runs and simple parts, mechanical presses have a speed advantage.

Cost, budget, ROI. Finally, and not the least important(especially from a purchasing point of view)is the price of your new press.

Currently, mechanical presses are still cheaper to purchase than a servo press. That can be a huge benefit to your bottom line in the short run.

It is very important to make sure that the automation technologies,such as a

coil feeder or transfer equipment, can keep up with your press.

If you don’t need the extra flexibility of a servo press, you are stamping relatively basic parts, and the part families that you are running are all the same or very similar, then a servo press may not gain you a good ROI.

When a Servo Press Is Best

Materials. For operations that are stamping high-strength materials above 950 MPa or other specialty steels, Class I surfaces, or multiple jobs requiring several die changes per day, then adding a servo press to your fleet of presses is recommended.

Part complexity. If you are stamping multiple different part families in which a large variation in the press curve is required, then a servo press offers the flexibility to get this done. By having control of not just the downstroke but also the dwell time at bottom dead center (BDC), and being able to accelerate on the upstroke, you can speed up the operations. One of the big benefits of a servo press is to be able to preprogram specialty curves for multiple part families with different strokes. In that way, a servo press provides definite advantages that a link-drive press does not.

Speed. A servo press offers better control of the ram speed. This is especially important when stamping the specialty materials that are used in this day and age for the new generations of vehicles.Cost, budget, ROI. Yes, servo presses and the large servo motors they are equipped with are more expensive.Yes, you will be looking at different and potentially more expensive die technologies, and, yes, a specific type of training is required for your workforce to run a servo press properly. However, based solely on the advanced materials that are coming onto the market coupled with the need for a higher throughput, a servo press can be worth the higher initial purchase price

True for Servo and Mechanical

Tolerances. Many new parts are requiring tighter tolerances. Either a next-generation mechanical press or a servo press can give you the tolerances that you are looking for.

Automation. A factor that you should take into consideration when deciding on a new press purchase is the automation technology. Whether you decide on a mechanical or servo press, automation will help you increase your throughput. It is very important to make sure that the automation technologies, such as a coil feeder or transfer equipment, can keep up with your press.It does no one any good if you purchase the latest and greatest press technology with a press that can go 60 to 80 strokes per minute(SPM)while the automation can only handle 30 SPM. Remember, the most expensive part of your investment is your press, and if anything is going to be the bottleneck, it should be the press and nothing else.

Dies. It is also important to note that the die technology will have to be changed and upgraded for a servo press if you are now running at a faster rate.This is common sense. Look for better-quality die materials, different types of coatings, or upgrade to nitrogen springs to your dies if you accelerate your operation. You won’t achieve the speeds you need if you use existing dies from presses that go 20 SPM in a press that goes 40 SPM. That is a recipe for disaster. Don’t expect those dies to last.

Whether you decide on a mechanical or servo mechanical press, common sense must prevail. A new press will help you improve your SPM as long as you make sure that your dies and automation equipment can match the new speed requirements. That is essential to your envisioned new press output needs as well as improving your ROI.

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