Replacement Cylindrical Grinding Machine

{
  "id": "031909-2024",
  "tag": [
    "award",
    "contract"
  ],
  "date": "2024-10-04T14:20:02+01:00",
  "ocid": "ocds-h6vhtk-04a5f4",
  "buyer": {
    "id": "GB-FTS-155",
    "name": "National Physical Laboratory"
  },
  "awards": [
    {
      "id": "031909-2024-1",
      "title": "Cylindrical Grinding Machine",
      "status": "active",
      "suppliers": [
        {
          "id": "GB-FTS-125996",
          "name": "Advanced Grinding Supplies Ltd (Agent for Fitz Studer AG)"
        }
      ],
      "relatedLots": [
        "1"
      ],
      "hasSubcontracting": true
    }
  ],
  "tender": {
    "id": "103758",
    "lots": [
      {
        "id": "1",
        "hasOptions": false,
        "description": "A high precision universal cylindrical grinding machine for internal and external grinding operations, with centre height of 125mm and 650mm distance between centres\n•\tThe universal grinding machine must be capable of performing both external and internal grinding operations. The machine must have a distance between centres of at least 650mm, and must have a centre height of at least 125mm with capacity to take workpieces up to 130Kg.\n•\tThe machine must be capable roundness accuracy with live spindle grinding of 0.0003mm, or better.\n•\tThe machine must be capable of grinding straightness at 0.0025mm over 600mm or better.\n•\tThe machine must be provided with an internal grinding spindle (or spindles) for bore diameter 6-80mm (minimum range)\n•\tAll measuring scales and graduations must be metric units. Digital measuring scales must be included in addition to analogue scales.\n•\tWorkpiece table must swivel, and must provide micrometer controlled fine taper adjustment. \n•\tThe workhead must accommodate a No 3 Morse taper holder and be able to grind between fixed centres as well as rotating centres. A universal work head with 0-90 degree swivel adjustment, must provide infinitely variable speed control.\n•\tThe wheelhead must swivel with adjustment range of 0 to 180 degrees and have an external grinding wheel of minimum of 300mm diameter, the external grinding wheel spindle motor power must be at least 7.5kW, with grinding spindle must have speed adjustment, of infinitely variable type over a minimum adjustment range of 50-100%.  The wheelhead infeed must provide, in addition to powered feed, manual handwheel adjustment over the full range of stroke. \n•\tThe wheelhead infeed must provide speed adjustment functionality;\t\n•\tAdjustable working infeed speed (minimum range 0.012-5mm/min)\n•\tIncremental infeed, adjustable increment, (minimum range 0.001-0.05mm)\n•\tAdjustable spark-out time (minimum range 0-5s)\n•\tRapid approach \n•\tThe longitudinal axis travel range is to overrun the maximum centre distance before motion is limited by end of travel stops. \n•\tThe longitudinal axis feed speed is to be adjustable with minimum range of 50-4000mm/min.\n•\tThe longitudinal axis travel dwell at stroke reversal is to be adjustable. \n•\tThe machine must have electronic contact detection.\n•\tThe machine must be supplied with a tail stock equipped with adjustable barrel travel, with fine adjustment for cylindricity correction and fine adjustment of centre pressure, and able to accommodate a No 3 Morse taper holder.\n•\tThe machine is to be supplied with all necessary wheel guards and any other guards required as per Machinery Directive 2006/42/EC and Supply of Machinery (safety) Regulations 2008.\n•\tThe machine must be provided with task lighting and for both internal and external grinding \n•\tThe machine must be supplied with a coolant system for use with emulsion liquids.\n•\tThe coolant system must be provided with a paper band filtering system on the return to the coolant tank, which will be suitable for work with composites in addition to routine engineering materials.\n•\tThe machine must have through work-head coolant supply for internal grinding.\n•\tThe machine must work on UK specification electrical power supplies, 3 phase 415V and/or 240V\n•\tThe machine must be provided with task lighting and for both internal and external grinding \n•\tThe machine must be compliant with applicable UK regulations and supplied with CE/UKCA DoC for regulatory compliance.\n•\tThe machine must be supplied with test certificates of machine geometry and calibration certificate. \n•\tThe machine must be supplied with documentation in English:\n•\tElectrical schematics of machine control.\n•\tHydraulic schematics\n•\tPneumatic schematics.\n•\tCoolant system schematics\n•\tThe machine must be supplied with the following documentation in English:\n•\tOperators’ manual\n•\tUser manual\n•\tServicing and Maintenance manual\n•\tOperating tools specific to the machine must be provided, and include;\n•\tExtraction tool for wheel adaptor.\n•\tWheel balancing arbour to fit wheel adaptors\n•\tFacility for wheel balancing and static balancing of grinding wheels up to 400mm dia is to be included.\n•\tMachine must be supplied with all necessary supporting systems as required for correct operation and functioning of the machine, hydraulic, pneumatic, electrical, machine cooling, coolant supply etc. \n•\tWorkholding – a range of work mounting, holding and setting-up tooling to provide a flexible machining capability is required and typically include;\n•\t3 jaw self-centring chuck for work up to 160mm (spiral chuck).\n•\t4 jaw adjustable chuck for work up to 160mm\n•\t120mm magnetic chuck\n•\t200-250mm magnetic chuck\n•\tFace plate 200mm (approximate size) face plate with T grooves and slotted holes\n•\tTwo point steady(ies) (5mm upwards)\n•\tA comprehensive set of Internal grinding quills are to be included to provide flexibility in machining a range of component internal geometries with varied aspect ratios. And shall include an internal grinding collet chuck for small diameter wheels (complete with 3mm and 6mm collet and face grinding quill.\n•\tWheel dressing, the range of component geometries and materials will be varied, to provide flexibility in wheel dressing and in process re-dressing a range of dressing options should be provided, typically include;\n•\tTailstock mounted wheel dressing attachment. (With dressing diamond to suit).\n•\tHinged dressing attachment (table mounted).\n•\tRadius dressing attachment for external/ internal rads.\n•\tA dressing attachment for CBN (and diamond) wheels.\n•\tA single point (chisel) dressing diamond. (For large concave rads)\n•\tA needle file point dressing diamond (18-20mm) (for concave dressing).\n•\tWheel balancing, the machine is to provide dynamic balancing capabilities for in-situ mounted grinding wheels."
      }
    ],
    "items": [
      {
        "id": "1",
        "relatedLot": "1",
        "deliveryLocation": {
          "description": "Teddington"
        },
        "deliveryAddresses": [
          {
            "region": "UK"
          }
        ]
      }
    ],
    "title": "Replacement Cylindrical Grinding Machine",
    "status": "complete",
    "coveredBy": [
      "GPA"
    ],
    "legalBasis": {
      "id": "32014L0024",
      "scheme": "CELEX"
    },
    "description": "A high precision universal cylindrical grinding machine for internal and external grinding operations, with centre height of 125mm and 650mm distance between centres",
    "classification": {
      "id": "38000000",
      "scheme": "CPV",
      "description": "Laboratory, optical and precision equipments (excl. glasses)"
    },
    "procurementMethod": "limited",
    "mainProcurementCategory": "goods",
    "procurementMethodDetails": "Negotiated without publication of a contract notice",
    "procurementMethodRationale": "NPL requires a universal cylindrical grinding machine that is suited to the wide-ranging geometries of components to be manufactured, in a large variety of engineering materials and appropriate for efficient use in producing bespoke parts as one-offs or in very low batch quantities.  In addition to a high level of flexibility in accommodating part geometries, materials and manufacturing strategies the machine must be capable of high roundness accuracy with live spindle grinding of better than 0.0003mm and grinding straightness of 0.0025 over the 650mm stoke (or better).\nThis supplier, Fritz  Studer AG,  provides published  data for performance that meet the required accuracy levels with a machine fully appropriate for the bespoke one-off nature of work to be undertaken,  in an non-CNC machine format.  Manufacturers of quality cylindrical grinding machines have changed their offerings to mainly full CNC machines, the full CNC machine style does not meet our needs for flexibility and efficient production of one off components.",
    "procurementMethodRationaleClassifications": [
      {
        "id": "D_MANUF_FOR_RESEARCH",
        "scheme": "TED_PT_AWARD_CONTRACT_WITHOUT_CALL",
        "description": "The products involved are manufactured purely for the purpose of research, experiment, study or development under the conditions stated in the directive"
      },
      {
        "id": "D_TECHNICAL",
        "scheme": "TED_PT_AWARD_CONTRACT_WITHOUT_CALL",
        "description": "The works, supplies or services can be provided only by a particular economic operator due to absence of competition for technical reasons"
      }
    ]
  },
  "parties": [
    {
      "id": "GB-FTS-155",
      "name": "National Physical Laboratory",
      "roles": [
        "buyer"
      ],
      "address": {
        "region": "UK",
        "locality": "Teddington",
        "postalCode": "TW11 0LW",
        "countryName": "United Kingdom",
        "streetAddress": "Hampton Road"
      },
      "details": {
        "url": "http://www.npl.co.uk",
        "classifications": [
          {
            "id": "BODY_PUBLIC",
            "scheme": "TED_CA_TYPE",
            "description": "Body governed by public law"
          },
          {
            "scheme": "COFOG",
            "description": "Research"
          }
        ]
      },
      "identifier": {
        "legalName": "National Physical Laboratory"
      },
      "contactPoint": {
        "email": "gary.phillips@npl.co.uk",
        "telephone": "+44 2089773222"
      }
    },
    {
      "id": "GB-FTS-125996",
      "name": "Advanced Grinding Supplies Ltd (Agent for Fitz Studer AG)",
      "roles": [
        "supplier"
      ],
      "address": {
        "region": "UK",
        "locality": "Gloucester",
        "postalCode": "GL2 2AE",
        "countryName": "United Kingdom",
        "streetAddress": "Unit 16 Stanley Court, Edison Close, Waterwells Business Park."
      },
      "details": {
        "scale": "large"
      },
      "identifier": {
        "legalName": "Advanced Grinding Supplies Ltd (Agent for Fitz Studer AG)"
      },
      "contactPoint": {
        "email": "info@adgrind.com"
      }
    },
    {
      "id": "GB-FTS-1243",
      "name": "NPL Management Limited",
      "roles": [
        "reviewBody"
      ],
      "address": {
        "locality": "Teddington",
        "countryName": "United Kingdom"
      },
      "identifier": {
        "legalName": "NPL Management Limited"
      }
    }
  ],
  "language": "en",
  "contracts": [
    {
      "id": "031909-2024-1",
      "title": "Cylindrical Grinding Machine",
      "value": {
        "amount": 449710,
        "currency": "CHF"
      },
      "status": "active",
      "awardID": "031909-2024-1",
      "dateSigned": "2024-10-04T00:00:00+01:00"
    }
  ],
  "initiationType": "tender"
}