MDF Rose Engine 2.0

Main

One

Ind

Mov

Sync

Rec

Grk

Geo

. . .

Used to move the Z or X axis to the next pattern starting position. Z or X axis movement will be the value of Distance set on the Move Screen for that axis.

Used to determine the direction of cut around the spindle. The pattern will run the pre-determined Spindle Degrees then stop and wait for return direction instruction. User chooses whether to cut in both directions (either on the same cut path or on subsequent path) or retract cutter and return to the origin point without cutting.

Used to stop the motion of the stepper motor.

Used to return the spindle or the selected axis to the pattern start point of the previous operation.

Touch Config on the screen image above to see the details for this screen.

This is used to display or edit the configuration settings for the MaxSpeed and the Acceleration for the respective stepper motors.

Reciprocation Axis Screen
(Radial)

Purpose: Synchronizes Spindle and Auxiliary Axis to produce a sharp-pointed reciprocating pattern along the circumferential surface of a cylindrical workpiece (typically around the Z axis):

It works by alternately reversing the Z or X axis direction whilst the spindle continues rotating in the same direction. The result would be a pattern "wrapped around the object" as it rotated.

Axial

Touch Axial on the screen image to the right to see the details for these axes.

Used to produce the pattern on the longitudinal surface.

Radial

Used to produce the pattern on the circumferential surface.

New in version 19 is the ability to select from some pre-set patterns:

1		This is the original pattern.
2		This gives a sawtooth pattern.
3		This gives a square wave pattern.

Waves

This sets the number of individual waves to be cut along the cylinder.

Spindle Degrees

This sets the circumferential distance around the cylinder for the total pattern. Entering 360 would wrap the pattern all the way around the cylinder; entering 90 would condense the whole pattern around just 90 degrees of the cylinder.

Axis Amplitude

This determines the height for the entire pattern (amount of Z, X, or B axis movement) and is dependent upon value entered in the Preferences Screen for Distance/360.

B Radius

This is the distance from the tip of the cutter to the center of rotation.

This field is only visible when moving on the B axis.

Speed

The controls on the left and right side of the screen are for controlling the respective stepper motor's speed and acceleration.

To change the Max Speed, touch the number, and you will be presented with the Number Pad Screen.

The slider is a red bar that can be moved up to increase the speed, or down to decrease it. The percentage shown in the bar (27% on the left, 79% on the right) shows the percentage of the Max Speed at which the stepper motor is set to run.

There is a slider for the stepper motor on each axis, and they operate independently.

The top number is the max speed for the respective axis' stepper motor. This is measured in pulses / second. The MDF Rose Engine 2.0 are set to 6,400 pulses / revolution, so a max speed of 15000 would equate to \[ \begin{align} MaxSpindleRPM & = \frac{15,000 \, \frac{\mathrm{pulses}}{\mathrm{sec}} \times \, 60 \, \frac{\mathrm{sec}}{\mathrm{min}}} {6,400 \, \frac{\mathrm{pulses}}{\mathrm{rev}} \times \, 9 \, \frac{\mathrm{motor \, revs}}{\mathrm{spindle \, revs}}} \\ & = 15.6 \, \mathrm{RPM} \end{align} \]

Thusly, at 27%,the spindle's speed is \[ \begin{align} SpindleRPM & = MaxSpindleRPM \times \, 0.27 \\ & = 4.2 \, \mathrm{RPM} \end{align} \]

The other stepper motor (in this case, on the B axis) directly drives the motion. Thusly, a max speed of 15000 would equate to \[ \begin{align} MaxRPM & = \frac{15,000 \, \frac{\mathrm{pulses}}{\mathrm{sec}} \times \, 60 \, \frac{\mathrm{sec}}{\mathrm{min}}} {6,400 \, \frac{\mathrm{pulses}}{\mathrm{rev}}} \\ & = 140 \, \mathrm{RPM} \end{align} \]

Thusly, at 79%,the motor's speed is \[ \begin{align} RPM & = MaxRPM \times \, 0.79 \\ & = 111 \, \mathrm{RPM} \end{align} \]

And if the lead screw has a pitch of 2mm and 4 starts, it will move 8mm per revolution. At the set speed, this is \[ \begin{align} Movement Speed & = RPM \times \, 8 \frac{\mathrm{mm}}{\mathrm{rev}} \\ & = 888 \, \frac{\mathrm{mm}}{\mathrm{min}} \end{align} \]

Acceleration

The bottom number (5500 on the left; 5000 on the right) is the acceleration for the stepper motor.

To change this value, touch the number, and you will be presented with the Number Pad Screen.

Limit Switches

Limit switches cannot be used with this function. They can only be used from the Main Screen or One Screen.

Specific Axis Notes

Axis	Comments
Spindle	Movement continues until the identified movement distance is completed, or the stop button (shown to the right) is used.
Z	Movement on this axis is the same as for the spindle.
X	Movement on this axis is the same as for the spindle.
B	The fields on this screen are used with the fields and settings on the B Axis Configuration screen to calculate how long to run the stepper motor to achieve the desired rotation. Movement on this axis is the same as for the spindle.