How to Make a Hydraulic Press With Syringes

Hydraulic presses can be utilized in numerous production and assembly processes, saving space while offering accurate force management.

As part of your mechanical engineering science project, you will build model hydraulic lifts using syringes of various sizes. By doing so, you will demonstrate force multiplication: smaller (leading) pistons moving over greater distance can lift heavier weight than their bigger (assisting) counterparts.

How it works

Hydraulic presses are versatile tools used to compress different materials, creating massive amounts of force for various industrial uses such as metalworking, food production, vehicle and aircraft building among many others.

Hydraulic presses work using Pascal's Law, which states that any pressure exerted upon enclosed fluid is transmitted unaltered through its entirety to create an even larger force. Furthermore, Pascal's Law magnifies any such force by multiplying ratio of areas involved into account to magnify it further.

To create this hydraulic press, you'll require two 10 mL syringes with their plungers removed, as well as cable ties for each (see photo). Drill a hole just below its top flange on one syringe's body and screw in two sheet-metal screws that act as stops to keep their plungers from leaving their bodies; do this to both syringes, as they'll both act as equal partners in this system.

Materials

Hydraulic presses are highly powerful machines capable of exerting massive forces. They're used across industries such as metalworking, plastics and composites fabrication, manufacturing, construction and automotive applications.

The most frequently seen type of hydraulic press is the ram or piston type, featuring two interconnected cylinders connected by an eccentric shaft and featuring one larger than the other with an input port for hydraulic fluid.

The hydraulic press is an excellent educational tool to teach children about forces. The process requires few materials and is very safe; making it ideal for young children. A portable version can even be made out of an ordinary bottle jack. Remember to always use proper safety equipment and carefully follow all instructions from instructors when setting up and operating this press.

Steps

Hydraulic presses are highly powerful tools used for crushing metal, plastics and composite materials. Commonly found in manufacturing, construction and automotive industries; hydraulic presses can also be dangerous machines that cost thousands of dollars to purchase and operate.

As part of your mechanical engineering science project, you will build a simple hydraulic lift and learn about force multiplication. Two syringes with different radii will act as hydraulic cylinders; each will feature an up and down plunger; one will serve as primary piston while the other acts as helping piston.

Before beginning, insert the nozzles of both leading and helping syringes into opposite ends of the tubing, submerge one of them in hot water for several minutes to expand it, and ensure no air remains within either syringe. After both have been attached to the tubing, push down on leading syringe's plunger - does the jar move up more, less or just about the same amount?

Final Thoughts

Hydraulic presses are versatile machines that can be put to various uses. From crushing diamonds in factories and workshops, to smashing concrete blocks - hydraulic presses can do it all. However, there are certain considerations you must keep in mind when operating one so as to avoid injury or damage to equipment.

Before purchasing a hydraulic press, it is crucial that you understand its operation in order to make an informed decision based on your individual needs and requirements. Furthermore, understanding this will enable you to find the ideal hydraulic press for your task.

To create a basic hydraulic press with syringes, start by gluing one of the panels (not including notched ones) to the base with short sides down as shown in the video. Next, glue two unnotched panels directly on top of this first panel and base; eventually you should see an elegant skyscraper-esque structure taking shape!