CNC Knowledge: 80 tips for internal thread treatment

Extended internal thread diameter

Selection of inappropriate screw taps
1. Use screws with appropriate precision levels
2. Increase the length of the food intake part
3. Reduce the front angle
4. Choose a large concentric rear pellet valve
5. Adjust the rear corner of the cutting cone

Chip blockage
1. Apex or Spiral Tap should be used
2. Reduce the number of screws to screws and develop the volume of grooves
3. Use fine threads
4. Increase the lower opening as much as possible
5. Deepen the bottom hole as much as possible during blind holes
6. Show the length of the tapping
7. Use other oil and oil filling methods instead
8. Choose internal cooling valves

Inappropriate conditions for use
1. Set the cutting speed
2. prevent the tap with the eccentricity or the inclination of the lower hole
3. Use a floating type to correct screw or work tap objects
4. The power speed must be appropriate to prevent Yashan from deforming
5. Adopt the forced food method (Pitch power method)
6. Appropriate selection of the treatment capacity of tapping machines
7. prevent the vibrations of the spindle
8 Use a flexible tap tap

Connection
1. Use a screw tap with a surface oxide film
2. Use cutting oil with high anti-fusion properties
3. Reduce cutting speed
4. Change the cutting angle to make it suitable for cutting material
5. Choose internal cooling valves
6. Show the length of the part of the wire

Reduced internal thread diameter

Selection of inappropriate screw taps
1. Use a larger screw tap
A. The tapping rate is less expanded for cutting materials such as copper alloy, aluminum alloy, melting, etc.
B. The scraped material is easily rebounded if it is a tubular or thin plate.
2. Eat appropriately in the corner of the space
3. Increase the cutting angle
4. Increase the front area
5. Increase the number of slots

Inner wire injury
When the rotation is postponed, in particular the metal valve will leave the opening of the inner wire, the speed must be appropriate to avoid damage.

There are chip residues in the inner thread
1. Improve the sharpness of the tap and reduce the residue of the mustaches fleas
2. After completely withdrawing the residual chips, check the inner wire with a gauge

Cracking or bite marks

Questions on the treatment surface of the inner wire

Not enough food length
1. Increase the length of the food precursor
2. Inappropriate cutting angle
3. The cutting angle must be paired with the working material

Connection
1. Use the tapest with an angle treatment of part of the wire part
2. Reduce the thickness of the blade
3. Use a tap with vision treated on the surface
4. Change the type of oil and oil filling method
5. Reduce cutting speed

Chip blockage
1. Apex or Spiral Tap should be used
2. Increase the lower opening

Excessively sharp vibration wave
1. Reduce the cutting angle
2. Croan the space angle between the small wire parts

Inappropriate replication
1. Avoid the too small thickness of the blade
2. Do not grind the bottom of the groove

Break the tap

Questions about the sustainability of the screw tap
Chip blockage
1. SKS2 is used in place of SKH
2. prevent iron deposits from being blocked (or use an apex tapping, a spiral tapping and no grooved rugs)
3. Increase the chip gutter
4. Remove the chips around the lower hole and treatment of parts
5. Make sure you erase the space of the chip

Excessive cutting torque
1. Develop the lower opening as much as possible
2. Starting the length of the tapping
3. Use fine threads instead
4. In order to increase the sharpness of the screw to screw, increase the cutting angle
5. In order to reduce the friction, the torque and the angle of space between the rings of the thread can be increased slightly and the thickness of the blade part can be reduced.
6. Use a spiral tapping

Inappropriate conditions for use
1. Reduce cutting speed
2. prevent the tap with the eccentricity or the inclination of the lower hole
3. Visible tap tightening adopts the floating type
4. Rather use an adjustable tap support
5. The diameter of the hole is not penetrated to prevent the screw from hitting the bottom of the hole
6. Prevent the hardening of the bottom hole
7. Maintain a stable diet
8. Remove the iron chips produced in the previous process
9. Study of the hardness and uniformity of treatment materials

Inappropriate replication
1. Do not grind the bottom of the groove
2. Avoid the blade is too thick
3. The portable part must be used
4. Time of grinding early

Blade collapse

Selection of inappropriate screw taps
1. Reduce the cutting angle
2. Modify the tap material material
3. Reduce hardness
4. End of food in the room
5. Prevent the blocking of fleas (the trench tap must be used)
6. Show the length of the wire
7. Erase all the parts of wear and tear
8. Avoid the too small thickness of the blade

Inappropriate conditions for use
1. Reduce cutting speed
2. prevent central deviation and avoid the balance of time to eat
3. When there is no hole through, no rapid rotation is allowed.
4. Increase the length of the food
5. Use flexible tapping pliers
6. Improve coaxiality
7. prevent hardening during the treatment of the lower holes