Turning Cut Calculator

TURNING CUT CALCULATOR
A good friend of the workshop machinist.

This is a nice tool for turning lathe machinists, CNC-operators, CNC-programmers etc. who are working with turning lathe operations.
In a fast and simple way can all turning data be manipulated for a turning cut.
Both the systems Metric and Imperial are supported.
Observe that this app also works for drilling, milling etc. if the noseradius and the surface are ignored (they are turning-specific here).
For more milling specific calculations you can download "Milling Cut Calculator" made by KenKe.


MAIN PROPERTIES

- Calculates the time for a turning-cut by using given turning-data
- Handles both the systems Metric and Imperial
- Possible to convert between the two systems
- Possible turning-data to change are diameter, cutting length, cutting speed, spindle speed (rpm), feedrate/r, feedrate/min, noseradius and surface (Ra)
- Converts between cutting speed and spindle speed
- Converts between feedrate/r and feedrate/min
- Calculates a roughly Ra-surface from given noseradius and feedrate
- Calculates a roughly feedrate from given quality of surface
- Choosed value can be changed by absolute input or by incremental buttons (perfect for tuning any machining data)
- Switching between change methods is made by a long tap on property to change
- Update of all necessary values immediately
- Possible to choose the time of showing highlights and buttons
- Possible to choose the color of highlights and buttons
- The choosed system, highlight-time and color will be stored to the next use of the app
- Possible to continue with the last session when starting the app


EVENTS WHEN CHANGING A VALUE

When changing a value will other values, dependent on the changed value, immediately be updated. Let's name thoose values "sub-values" for some coming simplicity.

Of course will diameter and cutting length never be changed because of a change of an other value. The same applies to the value of the noseradius. In the noseradius-case will feedrate be changed instead (when changing for example the quality of the surface (Ra)).

The sub-values that are to be updated follows this app's rules of priority.
That means that in each "section" will the following have the priority:

Cutting speed (prio)
Spindle speed

Feedrate/r (prio)
Feedrate/min

Noseradius (prio, and will never be changed as a sub-value)
Surface

So, the sub-values that should be changed are normaly thoose that not have the priorities.
The sub-values that have the priority can normaly only be changed by the other sub-value in each section (noseradius is not included in that rule).


CONCLUSION

This app's rules of priority results in this way of choosing sub-values to change:

- Changing of diameter will also change spindle speed, feedrate/min and time
- Changing of cutting length will also change the time
- Changing of cutting speed will also change the spindle speed, feedrate/min and time
- Changing of spindle speed will also change the cutting speed, feedrate/min and time
- Changing of feedrate/r will also change the feedrate/min, surface and time
- Changing of feedrate/min will also change the feedrate/r, surface and time
- Changing of noseradius will also change the surface
- Changing of surface will also change the feedrate/r, feedrate/min and time (not noseradius)

Observe that the showed values are rounded and the calculations are using unrounded 32-bits double precision values.
The main value to change is highlighted with a light color and the subs with a darker one.
A description like this one is included in the app.


GIVE FEEDBACK TO

kenkesoft@gmail.com