As an important part of precision transmission system, internal threads with high precision,
high hardness and small pitch are widely used in the fields of aerospace, numerical control …

The paper presents a comparative analysis of the thread profile geometrical error during
milling of internal thread and external thread applying external and planetary thread milling …

The efficiency of drill string largely depends on the pipe-end connector's accuracy named
tapered thread tool joint. Most of those are made by using lathes. Turning tools were made …

One-pass is a term used to shape parts without the need for consecutive cuts in machining.
Therefore, it is a method to enable cost-effective machining. However, generating the tool …

Sucker rod well pump installations are the most common for the mechanized method of oil
production. They use a beam-balanced pumping unit as a surface drive, and a sucker rod …

Pipes and drill string elements are connected by tapered threads on the pin and box. These
connections are called string-grid tool-joint. Such connections are made by lathe. Therefore …

Based on geometric modeling and FEM, it is developed a technique for choosing the values
of geometrical parameters of a threaded turning tool (rake angle, clearance angle …

Thread milling processes produces lower forces and residual stresses if compared to thread
cutting by turning, as the cutting area is lower because the feed rate is not dependent to the …

Present-day catalogues of tool manufacturers do not contain information on milling cutters
for planetary milling of metric buttress threads with nominal pitches on computer numerical …

Thread milling is a new machining process as compared to thread tapping. As a thread
making process in use for a long time, thread tapping did not have any alternative processes …