5.2.7 Boring with stop 1 (boring pass 3) CYCLE87

Programming:

CYCLE87 (RTP, RFP, SFD, DEP, RDP, SDIR)

Parameters:

                                                                Fig.5.8 CYCLE87

Function:

The tool drills at the programmed spindle speed and feedrate to the entered final drilling depth. During boring 3, a spindle stop without orientation M05 is generated after reaching the final drilling depth, followed by a programmed stop M00. Pressing the NC START key continues the retraction movement at rapid traverse until the retraction plane is reached.

Sequence:

1. Approach of the reference plane brought forward by the safety clearance by using G00

2. Traversing to final drilling depth with G01 and the feedrate programmed prior to the cycle call

3. Spindle stop with M05, program stop with M00

4. Press NC START

5. Retraction to the retraction plane with G00

Explanation of the parameters:

1. For the parameters RTP,RFP,SFD,DEP,RDP, see CYCLE81;

2. SDIR(direction of rotation): This parameter determines the direction of rotation with which the drilling operation is carried out in the cycle. If values other than 3 or 4 (M03/M04) are generated, alarm is generated and the cycle is aborted.

Example:

CYCLE87 is used for boring with stop 1. The drilling axis is the Z axis. Programming zero point is the center of end face.