Scissor Jack

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As long as one is in the posession of a car, then the presence of this sort of scissor jack in their trunks is almost inevitable. Used to lift heavy loads, scissor jacks are synonmous with their relative ease of use and their manifest advantage of other mechanical devices that are used to either augment or transport loads. Powered by the rotary motion of the power screw, most scissor jacks can readily lift a 15 kN load with approximatey only a 400 N force applied at the cranck end. These sort of numbers imply a large mechanical advantage ratio, which is to expected in such a device.As the power screw turns, the rotary motion is converted into linear motion in the jack's head. This particular design has a threaded power screw with a pitch of 2.5 mm and 11 mm nominal diameter. The chosen thread type was selected to be "square" for maximum power transmission capabity. The maximum load to be carried under safety conditions was designed to be 800 kg, which suffices for the applications this device is commonly used for. Shown below is the CAD model of the proposed device. All the parts were modeled and designed to scale and an illustrative exploded pictorial view showcasing all the parts that make up the device was added for comprehension. Since aethestics is an important part in the design process, it was deemed necessary by the desinger to add variant colors that potential customers could buy in the event of the contrapition being one day.As always, your constructive comments and crictcism are always appreciated. If any of you have queries or future design suggestions pertaining to the project, please post them in the comments section down belowThe CAD files are available for free download on my GrabCAD page: If you're a professional engineer or manufacturer, please contact me for any technical details (detailed drawings, bill of materials, CAD simulation) not mentioned in the post.