It refers to the diameter of the screw. More precisely, it is a 0.138" diameter screw. You can get it in with various head style and thread pitch.
Well, isn't that just a happy little question! To find the Intensification Ratio, we simply divide the diameter of the injection cylinder by the diameter of the screw. So, in this case, the Intensification Ratio would be 8 inches divided by 2.5 inches, which equals 3.2. Happy calculating!
Increase the IMA
The diameter does not affect the length. It is a separate dimension. Diameter is the cross sectional measure of a circular object.
the IMA increases?
To increase the IMA (Index of Machine Ability) of a screw, you can increase the thread pitch or decrease the head diameter. Both of these adjustments will increase the mechanical advantage of the screw, making it easier to drive and increasing its efficiency.
The IMA (ideal mechanical advantage) of a screw is determined by the ratio of the circumference of the screw head to the pitch of the screw thread. The formula for calculating IMA is 2πr/p, where r is the radius of the screw head and p is the pitch of the screw thread.
The length of a screw affects its IMA (ideal mechanical advantage) by multiplying the length of the effort arm. A longer screw will have a larger IMA because it increases the distance over which the force is applied, resulting in greater leverage.
There are all sorts of screw diameters - major, minor, pitch, mean, etc., but in general a screw diameter is a called by its nominal diameter which is the major diameter of the screw, approximately. For example a 1/2 inch screw has a nominal diameter of 1/2 inch.
a screw with closely spread threads
The ideal mechanical advantage (IMA) of a screwdriver is the ratio of the length of the handle to the distance from the axis of rotation to where the force is applied. This ratio helps determine how much force is amplified when using the screwdriver to turn a screw. A longer handle relative to the distance to the point where force is applied results in a higher IMA.
ima caca
It refers to the diameter of the screw. More precisely, it is a 0.138" diameter screw. You can get it in with various head style and thread pitch.
to cheak the diameter of something
This is a tool that is used to measure the pitch diameter of a screw. This tool looks like a standard micrometer except that the anvils are specially configured to reach into the screw thread groove and touch the pitch diameter of the screw thread. The screw thread micrometer does not measure any other aspect of the screw thread. It does not measure the: pitch; threads-per-inch; major diameter; minor diameter; flank angles; lead; helix angle.
Screw sizes are typically given as a combination of a diameter and a length. The diameter is usually measured in millimeters or inches, while the length is measured in inches. For example, a screw size of 4-40 indicates a #4 diameter screw with 40 threads per inch.
Holding the diameter of the screw constant, closely spaced threads (fine pitch) have a higher mechanical advantage than thread which are spaced farther apart (course pitch). Mechanical advantage is the ratio of travel of the applied force to the ratio of the imparted force. Because the screw must rotate more times to insert a given depth, fine pitch has a higher mechanical advantage.