A dc servomotor drives the x-axis of a CNC milling machine table. The motor is coupled to a ball screw, whose pitch = 7. 5 mm, using a gear reduction of 8:1 (eight turns of the motor to one turn of the ball screw). An optical encoder is connected to the ball screw. The optical encoder emits 75 pulses per revolution. To execute a certain programmed instruction, the table must move from point (x = 202. 5 mm, y = 35. 0 mm) to point (x = 25. 0 mm, y = 250. 0 mm) in a straight-line path at a feed rate = 300 mm/min. Determine (a) the control resolution of the system for the x-axis, (b) rotational speed of the motor, and (c) frequency of the pulse train emitted by the optical encoder at the desired feed rate, (d) How many pulses are emitted by the x-axis encoder during the move

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19-11-2022
Medicine

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A dc servomotor drives the x-axis of a CNC milling machine table. The motor is coupled to a ball screw, whose pitch = 7. 5 mm, using a gear reduction of 8:1 (eight turns of the motor to one turn of the ball screw). An optical encoder is connected to the ball screw. The optical encoder emits 75 pulses per revolution. To execute a certain programmed instruction, the table must move from point (x = 202. 5 mm, y = 35. 0 mm) to point (x = 25. 0 mm, y = 250. 0 mm) in a straight-line path at a feed rate = 300 mm/min. Determine (a) the control resolution of the system for the x-axis, (b) rotational speed of the motor, and (c) frequency of the pulse train emitted by the optical encoder at the desired feed rate, (d) How many pulses are emitted by the x-axis encoder during the move

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ShubhamSrivastava ShubhamSrivastava · Answer 1 · 2022-11-25T17:01:42+01:00

Rotational speed measurement is an essential component of condition monitoring, speed control, and protective supervision of rotating machinery such as generators, steam turbines, and gas turbines in industrial settings.

What is Rotational speed ?

The number of rotations an object makes around an axis divided by time, expressed in revolutions per minute, cycles per second, radians per second, etc., is the rotational speed of the object. Omega _textcyc is the symbol representing rotational speed in displaystyle.

The number of rotations a rotating system completes in a predetermined amount of time is a measure of rotational speed, often known as speed or speed of rotation. Pump speed is often expressed in min-1, while rotational speed is measured in s-1 (rev/s) (rpm).

What is CNC milling machine ?

Using rotating multi-point cutting tools and digital controls, CNC milling gradually removes material from the workpiece to create a part or product that is specifically tailored to the customer's needs.

Multi-point rotary cutting tools are moved and operated by computerized controls during the machining process known as CNC milling. To obtain the correct form and size, the tools steadily remove extra material as they rotate and travel across the workpiece's surface.

Aluminum, iron, steel alloys, nickel, and other materials can all be utilized in CNC milling to create parts. CNC milling machines are particularly well suited for activities including die cutting, milling profiles, cavities, and surface contouring.

CNC milling machines are particularly well suited for activities requiring simultaneous control of two or three axes of the milling table, such as milling profiles, cavities, surface contouring, and die cutting.

To know more about Rotational speed please click here ; https://brainly.com/question/6860269

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