How to use the turnbuckle tool? What's its name?

Use the mold:

1. The die plane must be perpendicular to the axis. In the early days, because the gear inlet end of the shaft body has been damaged and enlarged, a small assorted file can be used to remove redundant parts and burrs. Then get into the teeth a little bit. It is best to add kerosene or lubricating oil when tapping to prevent the die from being annealed or broken by heat.

2. You can't attack directly in one breath. It is necessary to make one turn and then half a turn, so that the captured metal chips can fall out smoothly and prevent accumulation on the die mouth. At the later stage, I feel that the stress on the teeth is relatively smooth, which means that the tapping is completed and the mold can be withdrawn.

Extended data:

Matters needing attention in using the mold:

1. First, chamfer 45 degrees at the end of the bolt blank to prevent the guide edge of the die from being suddenly loaded. At the same time, ensure that the circular die or hexagonal die cuts into the bolt blank vertically.

2. Reduce the diameter of the bolt blank as much as possible, that is, ensure that the tolerance related to the bolt diameter is close to the lower limit, so as to minimize the cutting force generated during tapping.

3. Use a die with an inclined edge, which can ensure that the chip is led out of the cutting area.

4. Use the correct coolant and aim enough coolant at the cutting area.

5. When adjusting the die opening, you must not open the die. When opening the die and tapping, you will scratch the workpiece instead of cutting it. Turn the adjusting screw evenly and close the opened mold by about 0.15 mm.

Baidu encyclopedia-dice