1-2-3 Block

The first one failed because I didn't tap right after i drill the hole.

I also crashed because my WCS does not matches the setting in cnc machine. (supposed to be at the bottom but was on the top in fusion 360)

plan of action: drill and tap in the same setup (cycle).

Above is the right hand tap I will use for my block.

Currently working on my second attempt ...

Will do 3 things different this time:

1. Use TalonGrip Jaws rather than regular soft jaws

2. Drill and tap in the same setup.

3. Tapping, no coolant.

75% or 65%? Current drill size: 0.3465 - changed to 7'16"

M: Metric thread

12: nominal major diameter of the thread is 12mm (0.4724 inch)

x : just a separator

1.75: the thread pitch in mm. is the distance between consecutive thread crests (or how far the tap advances in one full turn)

6HX: A tap tolerance class. 6 refers to the tolerance grade. X refers to non-standard, oversized tolerance for better performance in demanding materials.

Made two mistakes. First, I used the wrong drilling cycle—it should have been a peck drilling cycle, not a straight or rapid plunge drilling cycle. Peck drilling involves incrementally feeding into the material, then retracting periodically to break chips and clear the hole, repeating this drill-retract-drill sequence until the full depth is reached.

Second, the feed rate (or spindle speed) was set too high.

That said, if I had used the correct peck drilling cycle, the operation might have succeeded—though the excessive speed could still have caused issues.

Fix

Circular interpolation
5 fluke end mill (shorter the better)

Tools: feed and speed

*Feed per tooth - Surface Speed

End mill 300ish ft/min for alloy steel

finish slower for better finish

feed per tooth: 0.003

Too fast, spark. "rapid out"

*adviced always use "uncoated" using FSWizard, which gives the most conservative recommendations.

Chamfer mill: carbide, "cuz its shinning" - N8, SH, Ian.

The tap I broke

Need to change my hole size.

Notes

Make sure chamfer bigger than major diameter of the thread.

G91 incremental

G90 Absolute

G code: create movement

M code: turn things on and off

H Code (H1): References the specific offset value stored in the tool table for Tool #1.

G & M Code - Titan Teaches Manual Programming on a CNC Machine.

Manually square the block

Always hit "Reset" before cycle start.
";" = EOC on keypad.
"1" vs "1.0" on keypad. for example,
1. F20 = feed rate at 10 inch/min. F10. =10th of 1 thou./min = 0.0001

Nominal diameter:

traveler: paper

Spot drill: high speed steel

Roll Taps (A.K.A. forming taps) are the most commonly used tool for threading. The name originates because the tool forms threads rather than cutes them.

Identified by their concentric threads going around the cutting tool with only 1 relief in the tap for chip evacuation. Hence, It's important to have proper feeds and speeds to prevent overloading the tool.

Tapping

First attempt: Mill stopped, the form tap spun inside of the collar. (see video)

Solution: switch from round collar to square collar.

First Attempt

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