Arbor press
Encyclopedia
An arbor press is a small hand operated press
. It is typically used to perform smaller jobs, such as staking
, riveting, installing and removing bearings
and other press fit work. Punches, inserters, or other tools/dies may be added to the end of the ram depending on the desired task. Arbor presses are usually rated by the maximum load they can apply. Typically common are presses with a leverage of 1-5 tons. This leverage is achieved when a force is applied to the lever arm or wheel.
Some machinists disparage their use for the pressing of arbors
(for which they presumably were named), preferring other methods, such as freezing followed by tapping into place with a rubber hammer.
setup, to improve the mechanical advantage
. Higher force arbor presses have another gear reduction. Forces are usually generated by manual or hydraulic input.
Machine press
A machine press, commonly shortened to press, is a machine tool that changes the shape of a workpiece.-Servomechanism:A servomechanism press, also known as a servo press or a electro press, is a press driven by an AC servo motor. The torque produced is converted to a linear force via a ball screw....
. It is typically used to perform smaller jobs, such as staking
Staking (manufacturing)
Staking is the process of connecting two components by creating an interference fit between the two pieces. One workpiece has a hole in it while the other has a boss that fits within the hole. The boss is undersized so that it is a slip fit. A staking punch is then used to compress the boss...
, riveting, installing and removing bearings
Bearing (mechanical)
A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can...
and other press fit work. Punches, inserters, or other tools/dies may be added to the end of the ram depending on the desired task. Arbor presses are usually rated by the maximum load they can apply. Typically common are presses with a leverage of 1-5 tons. This leverage is achieved when a force is applied to the lever arm or wheel.
Some machinists disparage their use for the pressing of arbors
Mandrel
A mandrel is one of the following:* an object used to shape machined work.* a tool component that grips or clamps materials to be machined.* a tool component that can be used to grip other moving tool components.- Variants :...
(for which they presumably were named), preferring other methods, such as freezing followed by tapping into place with a rubber hammer.
Design
Arbor presses can be mounted on a work bench, wall, or pedestal. The base is usually constructed of cast metal. A ram provides the force; it may be square or round. The ram is usually driven by a rack and pinionRack and pinion
A rack and pinion is a type of linear actuator that comprises a pair of gears which convert rotational motion into linear motion. A circular gear called "the pinion" engages teeth on a linear "gear" bar called "the rack"; rotational motion applied to the pinion causes the rack to move, thereby...
setup, to improve the mechanical advantage
Mechanical advantage
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force...
. Higher force arbor presses have another gear reduction. Forces are usually generated by manual or hydraulic input.