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# CUTTING SPEED

 The speed of relative motion between the tool and workpiece in the main direction of cutting. Also known as feed rate; peripheral speed.

## Related Terms

### VECTOR DIAGRAM

A diagram of more than one vector drawn to the same scale and reference direction and in correct position relative to each other. A vector diagram composed of vectors representing the actual courses and speeds of two craft and the relative motion vector of either one in relation to the other may be called a SPEED TRIANGLE.

### RELATIVE MOVEMENT

Motion of one object relative to another. The expression is usually used in connection with problems involving motion of one vessel to another, the direction such motion being called DIRECTION RELATIVE MOVEMENT and the speed of the motion being called SPEED OF RELATIVE MOVEMENT or RELATIVE SPEED. Distance relative to a specified reference point, usually one in motion, is called RELATIVE DISTANCE. Usually called APPARENT MOTION applied to the change of position of a celestial body as observed from the earth. Also called RELATIVE MOTION.

### SQUAT

For a vessel underway, the bodily sinkage and change of trim which are caused by the pressure distribution on the hull due to the relative motion of water and hull. The effect begins to increase significantly at depth-to-draft ratios less than 2.5. It increases rapidly with speed and is augmented in narrow channels.

A radar set which provides a true motion display as opposed to the relative motion display most commonly used. The true motion radar requires own ship’s speed input, either log or manual, in addition to own ship’s course input.

### MILLING CUTTER

[DESENG] Arotarytool-steelcutting tool with peripheral teeth, used in a milling machine to remove material from the workpiece through the relative motion of workpiece and cutter.

### DOPPLER EFFECT

First described by Christian Johann Doppler in 1842, an effect observed as a frequency shift which results from relative motion between a transmitter and receiver or reflector of acoustic or electromagneti

### UNSTABILIZED DISPLAY

A radarscope display in which the orientation of the relative motion presentation is set to the ship’s heading and changes with it.

### PLAN POSITION INDICATOR

An intensity-modulated radar display in which the radial sweep rotates on the cathode-ray tube in synchronism with the rotating antenna. The display presents a map-like representation of the positions of echo-producing objects. It is generally one of two main types: RELATIVE MOTION DISPLAY or TRUE MOTION DISPLAY.

### CLOSED PAIR

A pair of bodies that are subject to constraints which prevent any relative motion between them.

### LUBRICANT

Any substance interposed between two surfaces in relative motion for the purpose of reducing the friction and/or the wear between them.

### Related questions

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