ANSI B11-6:2001 pdf download.Safety Requirements for Manual Turning Machines with or without Automatic Control.
ANSI B11-6 specifies safety requirements for the design, construction, operation and maintenance (including installation, dismantling, and transport) of the general class of manually controlled horizontal and vertical spindle turning machines. Machines covered by this standard are intended to work metals and other man—made materials. This standard also applies to devices that are integral to the machine.
These machines may have automatic capability but may not be equipped with automatic part handling or bar—feed mechanisms nor automatic tool changing systems. This standard does not apply to NC Turning Machines where manual control is used only to set the machine for automatic production.
1.1 Manual turning machine
Manual turning machines utilize manually initiated steps to produce a part by rotating the workpiece against a stationary tool(s) such that the cutting force is from the workpiece and not the tool.
NOTE — The terms machine and machining as used throughout this standard mean turning machine.
2 Normative references
The following normative documents contain provisions that, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements subject to this American National Standard should apply the most recent editions of the normative documents listed below.
3 Definitions
For the purposes of this standard, the following definitions apply.
3.1 automatic operation: Operator—initiated continuous movement of the machine in accordance with a predetermined sequence.
3.2 awareness barrier: An attachment that by physical contact warns personnel of an approaching or present hazard.
3.3 awareness device [signal]: A device or signal that,
by means of audible sound or visible light, warns of a
present or approaching hazard (see awareness barrier)
3.4 chuck: A clamp-like device used for gripping a workpiece or tool.
3.5 control reliability: The capability of the turning machine control system, the safeguarding, other control components and related interfacing to achieve a predetermined safe state in the event of a failure within their safety related functions.
3.6 fixture: A means used to locate or support material or workpieces or tools (tooling) during operation.
3.7 guard: A barrier that prevents entry into the work zone or other hazard area (zone).
3.8 hazard: A condition or set of circumstances that can cause physical harm to exposed personnel
3.9 hazard zone: Any zone within or around machinery in which a person is exposed to a hazardous situation.
NOTE – The hazard generating the nsk envisaged in this definition is:
— either permanently present during the intended use of the machine,
— or may appear unexpectedly (unintended! unexpected start-up).
3.10 helper: An individual who assists another in the operation, maintenance or repair of the machine.
3.11 hold-to-run control device: Control device that initiates and maintains operation of machine elements only as long as the manual control (actuator) is actuated.ANSI B11-6 pdf download.