CNC Machining-What is the Helix Angle? How to Calculate the Helix Angle?

Helix angle is a key feature such as twist drills. It is a material to be cut in CNC machining services. Some CNC machining tools also have related characteristics. Therefore, the helix angle has a certain importance, let us understand the knowledge of the helix angle together.

What is the helix angle?

The helix angle is a key feature of twist drills, and the shape formed by the thread is called a helix. If you make a rotation of the spiral and expand it into a straight line, the length of the straight line can be calculated as the circumference of a circle, and the spiral angle is defined as the angle between the unwound circumferential line and the spiral pitch. Common helix angle parts include screws, helical gears and worm gears and other mechanical parts.

What is the bit helix angle?

For example, the helix angle on a continuous auger (CFA) refers to the angle between the helix and any line perpendicular to the screw axis or pitch. The helix angle of the drill bit is defined as the angle between the helix flight of the helix and any line perpendicular to the helix axis or pitch.

Helix angle formula: how to calculate the helix angle?

The helix angle can be calculated by the following expression: helix angle=arc (pitch/thread diameter)

The Atan or arc tangent function is to calculate the value (expressed in radians) of the angle whose tangent is equal to a specified number (the inverse of the Tan function).

The difference between the helix angle and the lead angle--the difference between the lead angle and the helix angle

"Thread lift angle", also called "lead angle", is the angle between the circumferential line of the pitch diameter of the thread and the spiral line. The calculation method: tangent alpha = lead ÷ (pitch diameter × 3.14). "Thread angle" It is prescribed. The thread profile angle of cylindrical pipe is 55 degrees. The helix angle is basically a concept suitable for helical gears and bevel gears. The sharp angle between the cylindrical spiral tangent and the straight generating line of the cylindrical surface through the tangent point, the conical spiral tangent The acute angle between the straight generatrix of the cone and the tangent point is called the helix angle. The helix angle refers to the axis of the cylinder, which is different from the lead angle. The lead points to a line perpendicular to the axis. The helix angle is the angle opposite to the leading angle.