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Taps and dies are tools used for creating or repairing threads on materials like metal or plastic. They are essential for tasks such as assembling threaded components or restoring damaged threads. Here's an explanation of each:
Taps
Taps
Taps are used to cut internal threads in a hole, allowing screws or bolts to be fastened. In robotics, it is common for us to tap holes in extrusion and blocks as well as tapping the end of a Hex Shaft that we are using as an axle. The tap is a cylindrical tool with cutting edges along its length. The shape is similar to a screw however the sides are split with vertical grooves (called flutes) that provide space for chips to escape during cutting.
Types of Taps:
Taper Tap: Has a gradual cutting edge, making it easier to start threading in a new hole. Ideal for beginners or starting threads.
Plug Tap: Features fewer tapered threads and cuts closer to the bottom of a blind hole.
Bottoming Tap: Has almost no taper and is used to cut threads to the very bottom of a blind hole.
How to Use:
Drill a hole to the appropriate size (based on the tap chart for the desired thread).
Insert the tap into a tap handle or wrench.
Turn the tap slowly into the hole, cutting threads while periodically backing off to clear debris.
Standard Tapping
Standard Tapping
Methods for Ensuring a Straight Tapped Hole
Methods for Ensuring a Straight Tapped Hole
TapDrillChart.pdfDies
Dies
A Die is the opposite thread cutting tool. More specifically, it is used to cut external threads on cylindrical materials like rods, allowing nuts to fasten onto them. In other words, a die is the tool used to create screws and bolts and threaded rods in the shop..
The Die is a circular or hexagonal tool with internal cutting edges shaped to form threads that has openings for chip clearance and often a slit to allow adjustment of thread tightness.
Types of Dies:
Solid Die: A single-piece tool, ideal for threading rods of consistent size.
Adjustable Die: Can be tightened or loosened to modify thread depth and size.
How to Use:
Secure the rod or material in a vice for stability.
Mount the die in a die stock or wrench.
Align the die with the rod and turn it steadily to cut threads, reversing periodically to clear chips.
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