G7.1 Cylindrical Interpolation

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  1. Home
  2. Knowledge Base
  3. Programming
  4. G7.1 Cylindrical Interpolation
  1. Home
  2. Knowledge Base
  3. TCM S Machine
  4. G7.1 Cylindrical Interpolation

G7.1- Cylindrical Interpolation

Plane select Y-Z cylindrical machining. G7.1 is used to convert polar
C axis degrees to linear Y when machining “J” slots or cylindrical
cams. Most of these part prints are dimensioned with linear and radial
values, not degrees. Also the prints usually show the part cut and
spread flat. Radii are hard to program and adjust without G7.1 and tool
nose radius comp. G41-G42. Programming would be linear “Z Y”.
The polar “C” axis is converted to a linear “Y” axis. Another use of G7.1
is to chamfer a cross hole equally all the way around the hole. We use it
to engrave around the outside of the part for shows.

CHECK PARAMETER 1022 for C axis=6 (NOT 5)

M5 (O RING GROOVE)
T909M50(1/16 EM)
G28H0M23S5000
M83
G0G98X.675Z[.625+.160]C0
G1X.434F5.
G1G19W0H0(THIS LINE SEEMS TO BE NECESSARY)
G7.1H2500(H.25 RADIUS)
G3Z[.625-.16]R.16(IJK not allowed in G7.1)
G3Z[.625+.16]R.16
G3Z[.625-.16]R.16
G3Z[.625+.16]R.16
G41G1Z[.625+.195]
G3Z[.625-.195]R.195
G3Z[.625+.195]R.195
G1G40Z.785
G1G41Z.75
G2Z[.625-.125]R.125
G2Z[.625+.125]R.125
G1G40Z.785
G7.1C0 (G7.1 C0 Turns Off Circular interpolation)
G0X1.
G0G18X2.T0

Note: NO X MOVES ALLOWED IN G7.1, MUST CANCEL FIRST. SEE BELOW
C MOVES ARE IN DEGREES, NOT POLAR

T1010S4000M24(#1 CDRILL ENGRAVE HO4)
G0X.625Z.48
G98
C180.(ORIENTATION LOCATION)
G50C0
G0C0
G1X.523F1.5
G1G19W0H0

G7.1H2500
M83
G1C12.Z.48 (H)
G1C-12.Z.48
Z.5
G2C0R.025
G1Z.48
Z.5
G2C12.R.025
G1Z.48
G7.1C0

G0X.7
C0
G0X.6
G0Z.6Y0
G1X.523F5.

G7.1H2650
G1C4.5 (O)
G3Z.67C4.5R.035
G1C-4.5
G3Z.6C-4.5R.035
G1Y0C0
G7.1C0

G0X.6
G0Z.75Y0
G1X.523F5.

G7.1H2500
G1C-12.(4)
G1C0
Z.8
G1C-12.
G1C12.
G7.1C0

G0X3.T0M25
M51

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