七麦数据

MAIN PROPERTIES

- Calculates the time for a lathe cut by using given cutting data
- Calculation of input data also gives values for surface finish, material removal, chip thicknesses, cutting forces, torque and power
- Possible process-data that can be changed are diameter, cutting length, cutting speed, spindle speed, feed per revolution, feed per minute, tip radius, surface fineness, processing type, cutting depth, entering angle, rake angle, material, specific cutting force (kc) and efficiency
- Handles both of the systems Metric and Imperial
- Possible to convert between these two systems
- Converts between cutting speed and spindle speed
- Converts between feed per revolution and feed per minute
- Calculates an approximate surface quality from given tip radius and feed
- Calculates an approximate feed from given tip radius and surface quality
- Calculates material removal and material removal rate
- Calculates maximum and average (equivalent) chip thicknesses
- Obtain a good "Specific Cutting Force" via material selection
- Calculates approximate cutting forces
- Calculates approximate torque and power
- Almost all values can be changed by entering absolute value or with buttons for step change
- Required updates of affected values occur immediately
- Switching between change methods is made by a long tap on the value's row
- Possibility to get a short explanation about a value with a fast double tap on the value's row
- Possibility to get explanations of other result values with a quick double-tap in the specific result area
- Ability to select time for viewing highlighted text and active buttons
- Ability to select color theme
- Ability to adjust color tones for the color themes
- Possible to select main font
- Possibility to change the appearance of highlighted sub-values
- Possible to create new default values
- All settings are stored for the next use of the app
- Possible to continue with the last session when starting the app


HANDLING IN BRIEF

At the start of the app, all properties have a value. These values can be selected as fixed basic values or saved values from the previous session. To change a value, first tap on the property's field to enable the property. Upon activation, the field lights up in a preset bright color. At the bottom of the screen, a keypad for input of the same color lights up. The keypad can be chosen to be for absolute or for incremental input of values and is adapted to current property. Switching between the different keypads is done with a long tap on a value field.
In conjunction with activation of a property, in most cases, some other value fields are also lit in a darker color to indicate that their values will also change.
With a quick double tap on a value's field a brief description and a descriptive image of current property can be obtained. The same thing happens when you double tap the result field on page 2, but all results are described in a scrollable image.


Page 1 is used for input and calculation of cutting data, surface fineness and cutting time. Page 1 manages itself and is NOT DEPENDENT on page 2.
Page 2, on the other hand, is dependent on page 1 and is used for further data entry and calculations.


TREATED VALUES ON PAGE 1

- Diameter
- Cutting length
- Cutting speed
- Spindle speed
- Feed per revolution
- Feed per minute
- Tip radius
- Surface
- Time


INPUT VALUES ON PAGE 2

- Processing type
- Cutting depth
- Entering angle
- Specific cutting force (kc)
· Material
· Rake angle
- Efficiency


RESULTING VALUES ON PAGE 2

- Material removal (volume and rate)
- Chip thicknesses (max and average (equivalent))
- Cutting forces (tangential, axial and radial)
- Torque (spindle)
- Power (spindle and motor)

MAIN PROPERTIES

- Calculates the time for a lathe cut by using given cutting data
- Calculation of input data also gives values for surface finish, material removal, chip thicknesses, cutting forces, torque and power
- Possible process-data that can be changed are diameter, cutting length, cutting speed, spindle speed, feed per revolution, feed per minute, tip radius, surface fineness, processing type, cutting depth, entering angle, rake angle, material, specific cutting force (kc) and efficiency
- Handles both of the systems Metric and Imperial
- Possible to convert between these two systems
- Converts between cutting speed and spindle speed
- Converts between feed per revolution and feed per minute
- Calculates an approximate surface quality from given tip radius and feed
- Calculates an approximate feed from given tip radius and surface quality
- Calculates material removal and material removal rate
- Calculates maximum and average (equivalent) chip thicknesses
- Obtain a good "Specific Cutting Force" via material selection
- Calculates approximate cutting forces
- Calculates approximate torque and power
- Almost all values can be changed by entering absolute value or with buttons for step change
- Required updates of affected values occur immediately
- Switching between change methods is made by a long tap on the value's row
- Possibility to get a short explanation about a value with a fast double tap on the value's row
- Possibility to get explanations of other result values with a quick double-tap in the specific result area
- Ability to select time for viewing highlighted text and active buttons
- Ability to select color theme
- Ability to adjust color tones for the color themes
- Possible to select main font
- Possibility to change the appearance of highlighted sub-values
- Possible to create new default values
- All settings are stored for the next use of the app
- Possible to continue with the last session when starting the app


HANDLING IN BRIEF

At the start of the app, all properties have a value. These values can be selected as fixed basic values or saved values from the previous session. To change a value, first tap on the property's field to enable the property. Upon activation, the field lights up in a preset bright color. At the bottom of the screen, a keypad for input of the same color lights up. The keypad can be chosen to be for absolute or for incremental input of values and is adapted to current property. Switching between the different keypads is done with a long tap on a value field.
In conjunction with activation of a property, in most cases, some other value fields are also lit in a darker color to indicate that their values will also change.
With a quick double tap on a value's field a brief description and a descriptive image of current property can be obtained. The same thing happens when you double tap the result field on page 2, but all results are described in a scrollable image.


Page 1 is used for input and calculation of cutting data, surface fineness and cutting time. Page 1 manages itself and is NOT DEPENDENT on page 2.
Page 2, on the other hand, is dependent on page 1 and is used for further data entry and calculations.


TREATED VALUES ON PAGE 1

- Diameter
- Cutting length
- Cutting speed
- Spindle speed
- Feed per revolution
- Feed per minute
- Tip radius
- Surface
- Time


INPUT VALUES ON PAGE 2

- Processing type
- Cutting depth
- Entering angle
- Specific cutting force (kc)
· Material
· Rake angle
- Efficiency


RESULTING VALUES ON PAGE 2

- Material removal (volume and rate)
- Chip thicknesses (max and average (equivalent))
- Cutting forces (tangential, axial and radial)
- Torque (spindle)
- Power (spindle and motor)

MAIN PROPERTIES

- Calculates the time for a turning cut by using given turning data
- Calculation of input data also gives values for surface finish, material removal, cutting forces, torque and power
- Possible turning-data to change are diameter, cutting length, cutting speed, spindle speed, feed per revolution, feed per minute, nose radius, surface, turning type, cutting depth, entering angle, specific cutting force (kc) and efficiency
- Handles both of the systems Metric and Imperial
- Possible to convert between the two systems
- Converts between cutting speed and spindle speed
- Converts between feed per revolution and feed per minute
- Calculates an approx. Ra surface fineness from given nose radius and feed
- Calculates an approx. feed from given nose radius and surface quality
- Calculates material removal and removal rate from given data
- Calculates approx. cutting forces from given data
- Calculates approx. torque and power from given data
- All selectable values except one can be changed with absolute input or incremental buttons
- Updates all necessary values immediately
- Switching between change methods is made by a long tap on the row with the property to change
- Possibility to get a short explanation about a property with a fast double tap on the property's row
- Possibility to get explanations about other resulting values with a fast double tap on the specific area that showing those
- Ability to select time for viewing highlights and active buttons
- Ability to select color of highlights and active buttons
- The selected system of units, time for highlight and color of highlight will be stored to the next use of the app
- Possible to continue with the last session when starting the app


TWO PAGES FOR CUTTING DATA AND RESULTS

Page 1 manages itself and is not dependent on page 2. The page is used for input and calculation of cutting data, surface fineness and cutting time.
Page 2, on the other hand, is very dependent on page 1 and is used for further data entry to calculate material removal, cutting forces, torque and power.
Switching between the two pages is done by pressing the arrows in the upper corners.


VALUES TREATED ON PAGE 1

- Diameter* (affects spindle speed, feed/min, time, material removal (+rate), torque and power)
- Cutting length (affects time and material removal)
- Cutting speed (affects spindle speed, feed/min, time, material removal rate and power)
- Spindle speed (affects cutting speed, feed/min, time, material removal rate and power)
- Feed/rev. (affects feed/min, surface, time, material removal rate, cutting forces, torque and power)
- Feed/min. (affects feed/rev., surface, time, material removal rate, cutting forces, torque and power)
- Nose radius (affects surface and cutting forces)
- Surface (affects feed/rev, feed/min, time, material removal rate, cutting forces, torque and power)
- Time

*the finished diameter


INPUT VALUES ON PAGE 2

- Turning type* (affects material removal (+rate), torque and power)
- Cutting depth (affects material removal (+rate), cutting forces, torque and power)
- Entering angle (affects cutting forces)
- Specific cutting force (affects cutting forces, torque and power)
- Efficiency (affects power of the spindle motor)

*internal/external and feed direction (gives the direction of cutting depth)


RESULTING VALUES ON PAGE 2

- Material removal rate
- Material removal
- Cutting force - Fc (Ft)
- Cutting force - Ff (Fa)
- Cutting force - Fp (Fr)
- Torque - spindle
- Power - spindle
- Power - motor


SELECTED VALUES

Selecting a property whose value is to be changed is through a tap on the property's row. This marks this line with a light color and the lines on page 1 that are affected by the change are highlighted with a darker one. Page 2 shows the values of the affected properties in a result box.


INTERNET CONNECTION

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