# Measure A Gear

## Measurement Parameters

- File Option

- CMM Option

- Measure Item

- Master Flank

- Topography

- Pitch/RunOut

- Tip Option

- Others Item

### File Option

- Select a exist probe file

- Select a exist alignment file

### CMM Options:

Fill the machine parameters you needed during the measurement.

- The Fly Mode area provides a way to move the probe around the part in a smooth and round motion.

### Measure Items

#### Topography and Pitch/Runout measurement

if you have import an exist Gleason file ,the two item topograph and pitch/runout will available

##### Topography Parameters

In this tab all values necessary for the description of the topography measurement must be entered.

The topography measurement uses single point uses single point probings . All probing points and the machine movement is generated automatically by the program.

###### flank selection

- With the flank selection , you can specify whether the measurement should be executed only on the convex ,only on the concave or on both flanks.

- Number of teeth :The tooth numbers to be measured must be specified . In the case of several date, the numbers are separated by decimal point and written within parentheses,If all teeth should be measured,the input is "*"

- Delete lines in master flank :If only a reduced master grid should be used for the topography measurement ,you can specify in the mask what edge lines should be omitted . then the topography measurement is done with the reduced grid.(designed so it is gray)

###### Topography Evaluation:

Define evaluation parameters now : If you want to define evaluation parameters now you can check it ,and the evaluation frame should be valid.

##### Pitch/RunOut Parameters

In this tab all necessary values for the description of the pitch inspection are to be input .

###### Input parameter :

There are 2 options for the definition of the pitch point which establishes the probing points for the measurement :

A: Selection of a master grid point by entering the line and column number.

B:Numeric input of radius and z coordinateof the pitch point (design ,so it is gray)

As a default the option A with"reference point on master grid "is offered as pitch point.all probing points and machine paths are generated automatically by the program.

###### Pitch/Runout Evaluation

- input the magnification of the plot ,if you specify ‘0’,the evaluation is carried out ,but no plot output will be done , the evaluation parameters are however stored in the result element .

- if the gear quality was specified in the geometry parameter, the tolerances Fp,fp and fu are computed according to the standard you selected automatically and entered in the blank . if no gear quality was specified, the tolerances will not be calculated.

- with the measured pitch points , a runout evaluation can also be executed.

#### MasterFlank Measurement

if you didn't have a Gleason File ,you should measure Master Flank first , Now master Flank option is available .

In this dialog box the parameters for the measurement of the convex and concave master flank are specified.

- In this dialog box the parameters for the measurement of the convex and concave master flank are specified.

- The input of the numbers of the teeth to be measured is required . If you want to measure all teeth then enter "*".The calculation of the master flank uses an average from all measured flanks.

- A minimum of "4" is required for the column and line number.

- The detail meaning is shown as below:

##### Procedure of measuring the master

- After the inputs, you have to execute 9 manual probings in a specific order. These problings serve as a start value for the calculation of the probing points of the master grid to be measured and define the corner points of the grid .

- Beginning at the root of the tooth in the direction to the tooth head, you take three points,inside,in the middle and on the outside on the tooth. in order to determine the material direction you must take a clearance position before probing the first point . All further probing s can be taken without CLP's

- From these manual probings ,the program computes the probing points for the measurement of the master grid according to the number of lines and columns.

- The points on the corner will determine the size of the master grid .For the Computation of the grid points the program performs a linear interpolation of the Z coordinates and the radius according to the column and line numbers. The columns of the grid are parallel to the tooth profile and the lines are parallel to the head of the tooth.

- The measurement of the master flank then is executed in two automatic runs.

- After the measurement ,the program computes an average master from all measured master flanks. the computed grid points are stored in the element as NPT's in meandering columns in such a way that the first column lies inwards on the tooth flank (first point at the root )and the last column outwards.

- this procedure must be executed for both the convex and the concave master flank.

### Tip Option

### Other Item

- Clearance Distance :A safe distance which after the last hit on one flank is measured the probe will stay at .

- Clearance height(Z coordinate for)for probe rotation:A safe distance which the probe need to change angle .

- If you want to measure two reference point you need check .

### Measure

After you input all the parameters ,

- Save all the data in the gear file if you click Apply.

- All probing points and the machine movement is generated by the program after you click measure , and pcdmis will run it automatically.

click to start and no to cancle.