The bottom line of numbers (to the right of the machine icon with four feet) represents the angularity, offset, front foot and rear foot values in the horizontal plane. Bottom line, look at the angularity and offset in both the horizontal and vertical planes to quickly determine how good the alignment is.
How do you calculate alignment reading?
Calculating the Front Feet and Rear Feet Positions
- Face TIR = Total Indicator Reading from the Face Dial.
- Rim TIR = Total Indicator Reading from the Rim Dial.
- A = the diameter of the face dial indicator travel.
- B = the distance from the Rim dial indicator plunger to the movable machine’s front feet bolt center.
How is misalignment measured?
Measurement of Misalignment
By measuring your shaft alignment from different points along the horizontal and vertical planes, you can determine exactly how far out of alignment your shafts are and whether you are dealing with angular misalignment or offset (parallel) misalignment or, typically, both.
How do you use an alignment laser?
In order to correctly align the laser beam, you have to use the first mirror to align the closer target position and the second mirror to align the farther target position. Physically move both mirrors to get the laser beam onto a closer position. You may have to adjust the angles of the mirror slightly.
How do you check a shaft misalignment?
Measuring different sections along the horizontal and vertical planes will help determine shaft misalignment and whether the misalignment is angular, parallel, or often both. Phase analysis offers the most precises diagnose of misalignment.
How does laser shaft alignment work?
A laser shaft alignment tool performs measurements by means of two sensors mounted on two connected shafts. Both sensors fire a laser beam and receive the other sensor’s beam simultaneously; a comparison of the beams reveals whether the shafts are aligned and within a specified tolerance.
How do you calculate dial gauge reading?
Remember that the larger gauge represents a smaller measurement, so while the small gauge might measure in tenths, the outer gauge measures in thousandths. If the hand is pointing at 30, then it means 30 thousandths. To calculate the measurement, divide the number by 1,000. For example, 30/1000=0.030-inches.
What does a dial indicator measure in?
Dial indicators typically measure ranges from 0.25 mm to 300 mm (0.015in to 12.0in), with graduations of 0.001 mm to 0.01 mm (metric) or 0.00005in to 0.001in (imperial/customary).
What are the two main types of misalignment?
The main types of misalignment are angular, radial, and axial displacement. Factors that influence misalignment include thermal imbalances, wear, settlement and creep, and the influence of the last of these can, without correct maintenance, increase during the life of the coupling.
How many types of misalignment are there?
There are two types of misalignment: offset or parallel misalignment and angular, gap, or face misalignment. With offset misalignment, the center lines of both shafts are parallel but they are offset. With angular misalignment, the shafts are at an angle to each other.
What is angle misalignment?
Angular misalignment, sometimes referred to as “gap” or “face,” is the difference in the slope of one shaft, usually the moveable machine, as compared to the slope of the shaft of the other machine, usually the stationary machine.
Which meter is used for alignment?
The Alignment Meter can measure tolerances and errors in mechanical devices with high precision. An Alignment Meter head is rigidly mounted perpendicular to a traveling carriage, and a laser is aligned towards the detector to define a straight optical path.
What is soft foot in alignment?
In his book, Shaft Alignment Handbook, noted alignment expert John Piotrowski defines soft foot as the condition “when rotating equipment is set into place on its base, frame or sole plate, one or more than one of the ‘feet’ are not making good contact at the foot points of the frame.” More generally, the condition is
What is the maximum amount of soft foot permissible?
A certain amount of tolerance is typically allowed and will vary by the machine or local guidelines. However, when the measurements have been taken properly using a solid base, it should be possible to limit the soft foot to within 1 mil, or 0.001 inches.
When making a laser shaft alignment Soft foot should be corrected?
Correct the soft foot condition
An upward movement of more than 0.002-in. (0.05 mm) indicates a soft foot condition that should be corrected. The foot bolt is then re-tightened, and the test is repeated for each remaining foot bolt.
What is a laser shaft alignment tool?
Laser shaft alignment is the most efficient way to align machine shafts. Using an adaptive alignment system instead of conventional tools saves you time and money, increases machine availability, prolongs service life and maintenance intervals, and lowers power consumption.
How do you read a dial thick gauge?
Dial Indicator is used by being fitted to jig etc., while thickness gauge is held with our hand. Holding work piece between stylus and anvil, read the value directly. Contact point moves to upward when lifting lever is pressed down, and contact point returns to “zero” when it is released.
What is the range of the metric dial caliper?
0 to 200 mm
Metric Dial Caliper, Range 0 to 200 mm, Range per Revolution 1 mm, Dial Graduation 0.02 mm.
What is a continuous reading dial indicator?
They have a continuous reading dial meaning the graduations increase or decrease in only one direction from reference point. They are commonly used for larger ranges of measurements and where the set reference point for the measurement is the minimum reading.
What are the 3 types of measurement?
The three standard systems of measurements are the International System of Units (SI) units, the British Imperial System, and the US Customary System. Of these, the International System of Units(SI) units are prominently used.
What is the difference between a dial indicator and a dial test indicator?
In general, the two tools are used in different applications: Test indicators are utilized for layout work on surface plates or aiding in part setup during the machining process while dial indicators are used for comparative measurements with gages and fixtures.
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