MVQNR/L Внешний держатель токарного инструмента

Обзор

The MVQNR/L series is the ultimate solution for complex CNC profiling. Unlike standard holders, the MVQNR TOOL HOLDER features a specific 107.5° entering angle (often cited as -17.5° lead angle). This geometry provides the necessary clearance to perform “back turning” and undercutting (cutting away from the chuck), allowing machinists to trace intricate contours and reliefs that 93° tools cannot reach.

Оптимизирована для вставок VNMG

Designed to seat the slender VNMG insert (35° Diamond), this holder combines maximum accessibility with fine finishing capabilities. It is widely used in industries requiring high-precision contouring on shafts and aerospace components. Whether you use the compact MVQNR 2020K16 or the robust MVQNR 2525 version, this tool ensures precise copy turning.

Устойчивость жесткого М-типа

Profiling in multiple directions creates varying radial forces. To counteract this, the MVQNR utilizes the M-Type Double Clamping System. The lock pin and top clamp securely hold the narrow VNMG insert, preventing displacement during the push-and-pull motions typical of profiling cycles.

 Правила именования кодов ISO 

Here is the breakdown of the MVQNR code, highlighting its specialized “Q” geometry:

ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ 

Q1: What is the difference between MVQNR and MVJNR?
A: It comes down to the angle and application. MVJNR has a 93° angle, which is great for turning and facing square shoulders. MVQNR has a 107.5° angle, which cannot cut a square shoulder but is essential for undercutting (cutting reliefs) and back-turning where the tool needs extra clearance.

Q2: Why use a VNMG insert for profiling?
A: The Пластина Токарная VNMG has a narrow 35° point angle. This allows the tool to enter very tight grooves and follow steep angles that wider inserts (like CNMG or TNMG) would interfere with.

Q3: Can I use MVQNR 2525 for roughing?
A: We recommend limiting MVQNR 2525 to light roughing or finishing. The 35° insert tip is fragile compared to an 80° CNMG insert. Heavy roughing with a V-style insert can lead to tip breakage.