[kip2014]

i need a mnp (manual program) for single point 4"-8. npt internal threads. can someone please help. is there a way i can use g91 and incrementaly increase the diameter and step up every revolution to reduce program length? if so how would it be structured ? but im in a desperate situation here and have no cam software to generate the thread. please please help.

[botha.y]

6.13 Spiral Interpolation; G02.1/G03.1 (for machining centers)
Function and purpose
This function carries out interpolation that smoothly joins the start and end points in a spiral. This
interpolation is carried out for arc commands such as those in which the start point and end point
are not on the same circumference.
Command format
G17 G02.1/G03.1 Xx Yy Ii Jj Pp Ff ;
G17 :Rotation plane
G02.1/G03.1 :Arc rotation direction
Xx Yy :End point coordinates
Ii Jj :Arc center value
Pp :Number of pitches (number of rotations)
Ff :Feedrate (tool path direction speed)
Circular interpolation operations are carried out at the f1 speed by the commands above.
The path is toward the end point, following a spiral arc path centered at the position designated by
distance i (X axis direction) and distance j (Y axis direction) in respect to the start point.
(1) The arc plane is designated by G17, G18 and G19.
G17 · · · · XY plane
G18 · · · · ZX plane
G19 · · · · YZ plane
(2) The arc rotation direction is designated by G02.1 or G03.1.
G02.1 · · · Clockwise (CW)
G03.1 · · · Counterclockwise (CCW)
(3) P designates the number of pitches (number of rotations). p1 = 0 is less than one rotation and
can be omitted. p1 = 1 is more than one rotation and less than two rotations. The command
range is from 0 to 9999.
Detailed description
(1) The arc rotation direction G02.1 is the same as G02, and G03.1 is the same as G03.
(2) There are no R-designated arcs in spiral interpolation.
(3) Conical cutting, tapered thread-cutting and other such machining operations can be
conducted by changing the start point and end point radius and commanding the linear axis
simultaneously.
(4) Normally the spiral interpolation is automatically enabled with the arc commands (G02, G03)
when the difference between the start point radius and the end point radius is less than the
parameter setting value.
(5) The axis combination that can be simultaneously commanded depends on the specifications.
The combination within that range is random.
(6) The feedrate is the constant tangential speed.
(7) Simultaneous control by combining with tool radius compensation (G41, G42) is not possible.
(8) The arc plane always follows G17, G18 and G19. The plane arc control is carried out by G17,
G18 and G19, even if designated by two addresses that do not match the plane.
(9) When an axis designation other than the spiral interpolation plane is simultaneously
designated, other axes are also interpolated in synchronization with the spiral interpolation.

[MrMazak]

Use Vardex tool number or equal: HC75746L13-EI8NPT TM

%
O10(TMINRH CLIMB INCH CYCLES =2)
(Tool diameter = 0.746 inch - Mazatrol Controller.)
G94
G90 G00 G54 X0. Y0.
G43 H10 Z2. M3 S1850
G91 X0 Y0 Z-3.3017
G91 G01 G41 D10 X1.7244 Y-0.5170 F3.69
G91 G03 X0.5170 Y0.5170 Z0.0017 I0J0.5170 F3.69
G91 G03 X-0.6561 Y1.5853 Z0.0156 I-2.2416 J0.0006 F12.29
G91 G03 X-1.5853 Y0.6571 Z0.0156 I-1.5858 J-1.5850
G91 G03 X-1.5859 Y-0.6565 Z0.0157 I-0.0006 J-2.2426
G91 G03 X-0.6575 Y-1.5859 Z0.0156 I1.5857 J-1.5865
G91 G03 X0.6568 Y-1.5866 Z0.0156 I2.2436 J-0.0006
G91 G03 X1.5866 Y-0.6577 Z0.0156 I1.5872 J1.5864
G91 G03 X1.5873 Y0.6570 Z0.0157 I0.0006 J2.2446
G91 G03 X0.6580 Y1.5873 Z0.0156 I-1.5871 J1.5879
G91 G03 X-0.6573 Y1.5880 Z0.0156 I-2.2455 J0.0006
G91 G03 X-1.5880 Y0.6583 Z0.0156 I-1.5886 J-1.5878
G91 G03 X-1.5887 Y-0.6576 Z0.0157 I-0.0006 J-2.2465
G91 G03 X-0.6586 Y-1.5887 Z0.0156 I1.5885 J-1.5893
G91 G03 X0.6579 Y-1.5894 Z0.0156 I2.2475 J-0.0006
G91 G03 X1.5894 Y-0.6588 Z0.0156 I1.5900 J1.5892
G91 G03 X1.5901 Y0.6581 Z0.0157 I0.0006 J2.2485
G91 G03 X0.6591 Y1.5901 Z0.0156 I-1.5898 J1.5907
G91 G03 X-0.5170 Y0.5170 Z0.0017 I-0.5170 J0
G00 G40 X-1.7322 Y-0.5170 Z0
G90 G00 Z3.0000
M5
M99
%