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Home › Resources › Glossary

Glossary

Term Description
Accuracy Defines the accuracy compared to a theoretical value.
Block window Schmidt Presses with Monitoring capability; a window that monitors if a certain force has been reached, but not exceeded within a pre-defined range of displacement
CANbus ControllerAreaNetwork – CAN (also referred to as CANbus or CAN bus) is a network used in many every-day products consisting of multiple microcontrollers that need to communicate with each other
CE compliant CE marking is a safety standard that has been established by the European regulatory authorities
Clean room Nickel plated Schmidt presses which are suitable for some clean room applications
Column Structure to which a press head can be mounted. Two types; C-frame (maximum clearance for work piece) and H-frame (minimal deflection)
Compliant pin A press fit type electrical connection that eliminates soldering. Schmidt has extensive experience in assembly & quality control of compliant pin assemblies.
Continuous force The force that a Servo press can generate indefinitely
ControlTool Software that facilitates Process data management, HMI & PLC editing
Delta stroke After reaching target force, move predetermined distance
Die coupling Using a die coupling facilitates quick tool change and is ideal for tooling that needs to be guided extremely accurately by means of a die set.
Direct Acting A Press type that produces constant force through the entire stroke, unlike a toggle press
Dual channel A type of redundency. This can apply to electrical and pneumatic controls. Two channels (valves, relays, etc) have to function properly in order for an action to take place.
Dynamic bending compensation A patented feature by Schmidt that allows achieving a high degree of position accuracy under varying forces
EC type approved Type-approval is a procedure by which the approval authority verifies that a vehicle or component type meets the relevant technical requirements.
Force Total force generated by a press. Also see Pressure
Force pre selector An option for HydroPneumatic presses that allows presetting of maximum pressure / force independent from the main operating pressure.
Frame Same as Column
Gantry frame A closed frame (as opposed to a C-frame) that keeps deflection to a minimum
H-frame Same as Gantry frame
Hydro Pneumatic A pneumatic press with an integral hydraulic section used as a pressure intensifier that enables generation of great force with normal compressed shop air.
ISO International Standard Organization – engineered hardware designed to this standard is interchangeable, regardless of manufacturer
kN kilo Newton = 1,000 Newton = 225 lbs
MovTol A software feature used inside the PRC1001 and 3000, which allows using a set of monitoring criteria at different points of press displacement
Nickel plating See Clean room
NL Metric unit of volume – Normal Liter.
1 NL = 0.0353 ft³
1 ft³ = 28.317 NL
NPN Designates output signal from a sensor. This sensor is sinking type and provides 0 Volt or negative voltage. Used with sourcing control input
OPC OPC is open connectivity via open standards. They fill a need in automation for exchange of data like printer drivers did for Windows
PDA Process Data Acquisition, collects & evaluates process data
Peak force The absolute, maximum force that a Servo press can generate for a very short amount of time.
PNP Designates output signal from a sensor. This sensor is sourcing type and provides 24 Volt or positive voltage. Used with sinking control input
Poka Yoke Japanese term which means ‘mistake-proofing’, often referred to as ‘error-proofing’, a means to easily identifies a flaw or error and prevent incorrect parts from being made or assembled. Typically all sorts of sensors as part of the tooling or equipment are utilized to achieve this task.
Power stroke The distance over which a HydroPneumatic Press can generate the rated force. The power stroke can occur anywhere within the total stroke of the press. Power stroke is not added to the total stroke of the press. A press model 62.100.6 has a total stroke of 100 mm and not 106 mm. 6 mm defines the power stroke capacity.
Pressure A force based on a certain area, typically pounds per 1 square inch, or PSI. Pressure is not an indication of force generated, unless surface area is known.
Ram drift lock Prevents the ram of a pneumatic press to drift downward in the case of air pressure loss
Real time closed loop force control The Schmidt Servo Press can accurately maintain the ram position based on force feed back instead of position feed back.
Redundant Serving as a duplicate for preventing failure of an entire system or unintended actions. Can apply to pneumatic as well as electrical controls.
Repeatability This specification is independent from accuracy and indicates how well a criteria can be repeated.
Single channel Relates to electrical & pneumatic controls. Single channel is non-redundant. Single channel does not require two valves or two electrical ciruits to operate simulaneously in order for an action to take place.
Slope detect Used as a criteria for the point when a servo press ram is to stop pressing and return. Slope refers to ratio between traveled distance vs. increase of force.
SPC Statistical Process Control
Steel rule die A cutting tool that uses a thin steel blade, used to cut thin material. The blade cuts against a urethane or steel pad
Stroke completion sensor Option for Direct Acting Pneumatic presses; ensures a stroke has been reached within an accuracy of 0.004″
Stroke return lock Option for Manual presses; ensures the target stroke has been reached before releasing ram for return
Stroke tolerance A type of monitoring criteria for Schmidt Presses with Monitoring capability
Supply voltage Power supply voltage that needs to be supplied to the equipment
Toggle A linkage that provides a press with a mechanical advantage to achieve great output force over a short distance with little input force, thus allowing operation of a pneumatic toggle press with small cylinders.
Tolerance window Used as a monitoring criteria for a press with process monitoring capability. A window is defined by a lower & upper force limit over a pre-defined amount of displacement. The force curve has to stay within the force limits of this defined displacement in order to pass the criteria.
TUV TÜV is a German based, independent approval and testing organization with a wide range of services for the automotive industry.
Work integral Area under the force/distance curve, i.e. the amount of work exerted during one press cycle.
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