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ISO 16092-3:2017 pdf free

ISO 16092-3:2017 pdf free.Machine tools safety一Presses一Safety requirements for hydraulic presses
This document, in addition to ISO 16092-1, specifies the technical safety requirements and measures to be adopted by persons undertaking the design, manufacture and supply of hydraulic presses which are intended to work cold metal or material partly made up of cold metal.
The presses covered by this document range in size from small high-speed machines with a single operator producing small workpieces to large relatively slow-speed machines with several operators and large complex workpieces.
This document deals with all significant hazards relevant for hydraulic presses when they are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4). All the phases of the lifetime of the machinery as described in ISO 12100:2010, 5.4 have been taken into consideration.
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4413:2010, Hydraulic fluid power一General rules and safety requirements for systems and their components
ISO 12100:2010, Safety of machinery一General principles for design一Risk assessment and risk reduction
ISO 13849-1:2015, Safety of machinery一Safety-related parts of control systems一Part 1: General principles for design
ISO 16092-1:2017, Machine tools safety一Presses 一Part 1: General safety requirements
IEC 60947-5-8, Low-voltage switchgear and control gear一Part 5-8: Control circuit devices and switching elements一Three-position enabling switches
The circuit shall be protected by pressure limiting valves. These valves shall not be capable of alteration without the use of a tool. Also, they shall be set at a pressure which is no more than 10 % higher than the maximum operating pressure.
For down-stroking presses, provision shall be made to protect the cylinder and components containing the fluid in the lower part of the cylinder from damage due to pressure intensification. A relief valve used for this purpose shall be direct operated, sealed and locked against unauthorised adjustment,and shall be set at a pressure at least 10 % above the maximum system pressure so that it only opens in the case of a fault. The components it protects shall be designed to withstand the pressure at which the valve is set. The relief valve shall be constructed so that, if a single break in the spring occurs, the space between the windings remains less than one wire thickness. The spring shall be guided so as to maintain the function of the relief valve.ISO 16092-3 pdf download.

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