Five elements of triangular screw thread
Fasteners for use in a triangular screw thread, the tooth type, diameter and pitch three elements are called load standard thread standard thread, and the thread marks tolerance standard threads are standardized, the number of lines of thread and rotation, if not otherwise stated, for the right-handed singlet. If you want to make the internal and external screw thread properly screwed together to form a pair, then the tooth inner and outer thread diameter, rotation, line number and the pitch must be consistent.
1.30 screwsThe main thread has the following elements:
1, tooth type, in cross-section through the thread axis, called the contour of the thread tooth type. Between two adjacent tooth flank angle is called angle type. Tooth type commonly common thread is triangular, tooth-type angle of 60 °.
2, diameter, thread diameter large diameter, diameter, trails, representing the thread when using the nominal diameter, nominal diameter is the representative to the thread diameter. The common thread is the nominal diameter of the large diameter.
3, rotation, viewed in the axial direction, clockwise rotation of the threaded become right-handed thread, the thread counterclockwise rotation is called left-handed thread.
4, the number of lines, the spiral thread forming lines known. There are single-line and multi-line thread points, multiple thread in cross section perpendicular to the axis is uniformly distributed.
5, pitch, two adjacent teeth in the line corresponding to the diameter of the axial distance between two points is called the pitch. With a helix, two adjacent teeth in the line corresponding to the diameter of the axial distance between two points is called the lead.
1.30 screwsThe main thread has the following elements:
1, tooth type, in cross-section through the thread axis, called the contour of the thread tooth type. Between two adjacent tooth flank angle is called angle type. Tooth type commonly common thread is triangular, tooth-type angle of 60 °.
2, diameter, thread diameter large diameter, diameter, trails, representing the thread when using the nominal diameter, nominal diameter is the representative to the thread diameter. The common thread is the nominal diameter of the large diameter.
3, rotation, viewed in the axial direction, clockwise rotation of the threaded become right-handed thread, the thread counterclockwise rotation is called left-handed thread.
4, the number of lines, the spiral thread forming lines known. There are single-line and multi-line thread points, multiple thread in cross section perpendicular to the axis is uniformly distributed.
5, pitch, two adjacent teeth in the line corresponding to the diameter of the axial distance between two points is called the pitch. With a helix, two adjacent teeth in the line corresponding to the diameter of the axial distance between two points is called the lead.