Lubricatio n of Davi d Brown Ne w "Hydrax" Gea r Hobbing Machin e IN THE NEW No. 10 "Hydrax" high-speed gear ating oil sump, completely isolated from the cutting hobbing machine recently developed by the David oil, and the maintenance of oil level can be verified Brown Machine Tool Division, Manchester, a number by a sight glass. The work table gearbox, the only of interesting features have been incorporated. other unit requiring lubrication, also has a built-in One of the most noticeable changes is that all oil reservoir, the drive worm and ball bearings being partially immersed in the oil. This is regarded as an gearing is confined to the cutter head, with the ideal arrangement since it is always more effective to exception of the work table worm wheel drive gearbox, which is separately mounted. The hob speed and dip the worm than the wheel and, in addition, it also indexing gears are interchangeable, as in the earlier eliminates any oil "churning". Here, again, the oil machine, but they are now located in the same com can be kept under observation by a sight glass. partment. This is a great convenience to the setter All slides and hand motion assemblies are lubricated as well as simplifying lubrication arrangements. by a "one shot" oil system. The hydraulic oil tank is now completely isolated Recognising that maintained precision is impossible from the lubricating and cutting oil, thus eliminating without cleanliness, such items as directions of oil all oil seal and oil creep problems. Special temper splash and the general contour of the machine have ature compensator flow control valves are now fitted, been regarded as items of importance in the design. giving constant feed rates throughout a wide oil temperature range. All the hydraulic valves are Lending itself to use with any low level swarf carried on a hinged panel which permits straight conveyor, where this is provided along the main forward open access to all valve connections. gangways, the swarf removal tray is now at the back The cutter head is provided with a built-in lubric of the machine. INTERNATIONAL BP TANKER LAUNCHED PLASTICS EXHIBITION The first tanker to be launched this year for BP Tanker Company was British Destiny a t the Wallsend- The International Plastics Exhibition will be held on-Tyne yard of Swan Hunter and Wigham Richard a t Olympia from June 17th to 27th, and at the same son on March 11th. The ceremony was performed time there will be an International Plastics Conven by Lady Hoyer Millar, wife of Sir Frederick Hoyer tion, at which sixteen papers will be presented, with Millar, Permanent Under-Secretary of State at the "Developing Fields" as their theme. The papers fall Foreign Office. This is the fifth 42,000 d.w. ton under general headings of Polyolefins, Material Devel tanker to be launched for BP Tanker Company and opments, Design Trends, Recent Developments in two more of similar size are on order. Glass Reinforced Plastics, Expanded Plastics, and Extrusion. Overseas speakers will represent Den The 15,500 d.w. ton British Fulmar, launched on mark, Germany, Holland, Italy and the U.S.A. The the Clyde last September, has now completed her exhibition and convention is organised by the journal maiden voyage. She loaded oil products at Llan- darcy and Kent Refineries for Denmark. British Plastics. Scientific LUBRICATION 22 May, 1959
Industrial Lubrication and Tribology – Emerald Publishing
Published: May 1, 1959
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