lower punch

lower punch

[′lō·ər ′pənch]
(metallurgy)
In powder metallurgy, the portion of the die forming the bottom of the die cavity.
References in periodicals archive ?
PharmaSpray helps reduce the amount of dry lubricant in the compression blend while applying an optimized amount of lubricant to the upper punch face, die wall and lower punch face.
We expected a smaller proportion of concussions/CHIs among younger boxers, since they generate a lower punch force," said Gary Smith, senior author of the study and director of the Center for Injury Research and Policy at Nationwide Children's Hospital.
Robotic control unit adjusts the upper and lower punch matrices in serial or parallel adjusting mode to shape tool surfaces according 3D data output by CAD/CAE software.
Natoli's turrets feature the following: steel die tables; eyed upper punch guides; lower punch retainers (except B2 and DS3) and 3-piece die lock screw with stainless threaded ends.
Tablets were identified as to their compression station of origin by utilizing micro indentations in the lower punch cup.
At the core of the PERFORMA[TM] range is the EDD (Exchangeable Die Disc) concept: the middle section of the turret, containing the dies, can be detached from the upper and lower punch guide parts and handled separately.
Additional key benefits and features of the Xpress include: automated weight adjustment using die fill regulation; rotary feeder is used to replicate production powder feed behavior; controlled automated upper and lower punch lubrication system; single station reject is available as an option; WiP solution available to allow safe handling of active products.
The principal functions of the Galenic operating package include: 5-channel display curves of the main compression force, pre-compression force, ejection force, upper punch stiffness, and lower punch stiffness; force-displacement diagram of main compression force and pre-compression force; calculation of mechanical work; punch station selection; display at full rotation; zoom function for x and y displays; measurement storage on hard disc; data export and import via media storage or network; data evaluation on separate PC; printing and directory functions; consistent use of existing technical equipment and integration facilities; the latest standard engineering, hardware and software components.
Sensors are used to measure both upper and lower punch forces, punch movement, tablet ejection and radial die wall forces.
As the lower punch is pushed upwards by the lower roller, the powder is being compressed, while the exerted compression force increases.
Turrets Feature the following: steel die tables; keyed upper punch guides; lower punch retainers (except B2 and BS3); 3-piece die lock screw with stainless threaded ends.
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