Webster&bennet D Vertical boring and turning mills

Webster & bennet D Vertical boring and turning mills 

COVENTRY INDEX PAGE Introduction List of Agents. Printed in England Catalogue NORTHEY ROO WORKS INTRODUCTION FOLESHILL

The range of Vertical Boring and Turning Mills described on the following pages has been designed with two main objects in view. To meet the need for a general purpose machine of medium weight and power, capable of utilizing the most modern cutting tools, and to produce such a machine at the lowest possible cost compatible with the high standard which this Company has always maintained. This type of machine must be speedy, rigid, economical in power and easily operated. These requirements have been met by the extensive use of ball and roller bear- ings, ground gears on solid splined shafts, adequate distribution of metal in castings, with careful design and grouping of controls. They have been made possible by a searching analysis of each detail from a production point of view, by designing to use common parts and units whenever possible throughout the range and by the use of a comprehensive set of jigs, tools and gauges. No money has been wasted on features whose only value is sales talk or fashion; every feature is of real practical value, and is based largely on the result of our own experience with this type of machine. The design provides for building each machine to give any one of four different speed ranges: Normal, High, Special High, and Low. In addition, for 48 and 60 machines, a Special Heavy Duty Drive is available. The normal range is satisfactory for most work. The low speed and special heavy-duty drive are recommended for work on high tensile steel forgings, etc., where machining allowances may be large and irregular. The high-speed ranges are recommended for non-ferrous metals and light castings. It should be noted that the high-speed ranges are obtained without objectionable speed-up in gear ratios, and the low speed and special heavy-duty drive without dropping the pulley speed. We offer these machines with full confidence that they represent the most modern design and best investment for users. As designers, makers, and users, this confidence is backed by unrivalled experience and we are at all times willing to render advice and service on the selection of work and its most efficient production on Webster Bennett Vertical Boring and Turning Mills. PHOTOGRAPHS ARE NOT BINDING IN DETAIL Page 3 CONTRACTORS TO THE ADMIRALTY. WAR OFFICE. INDIA OFFICE. CROWN AGENTS FOR COLONIES. STATE RAILWAYS. ETC. WEBSTER BENNETT LTD. MACHINE TOOL MAKERS FOLESHILL COVENTRY. ENGLAND. CODE: telegrams: ENGOE COV'TH ... telegraph: eohernehaegis eelcoveith MARCONI: INTERNATIONAL ABC 4th 5th 6th eolonsl WESTERN UNION: 5 LETTER LIEBERS STANDARD Ś LETTER1 BENTLEY 5 COMPLETE PHRASE LONDON OFFICE 38 39 STRATTON STREET. PICCADILLY. LONDON TELEPHONE GROSVENOR 3345-8 LIST OF AGENTS A. C. WICKMAN LTD. No. HEAD OFFICE Coventry Tile Hill 66271 LONDON 38 39 Stratton St., Piccadilly, Grosvenor 3345-8 MANCHESTER Century House, St. Peter's Square, 2 Central 3612 BIRMINGHAM Somerset House, Temple St., 2 Midland 4101-2 GLASGOW 98 West George St., Douglas 4176 7 BRISTOL 18 Baldwin St., 1 Bristol 22747 LEEDS Lloyds Bank Chambers, Vicar Lane, 1 Leeds 20194 EUROPE COVENTRY A. C. Wickman Ltd., Export Dept., Coventry, England. No. Tile Hill 66271 SOUTH AFRICA JOHANNESBURG D. Drury Co. Pty Ltd., Box 3929, Corner Marshall Sauer Streets CALCUTTA Alfred Herbert India Ltd., 13 3 Strand Road, Post Box No. 681 BOMBAY Alfred Herbert India Ltd., Kaiser-I-Hind Buildings, Sprott Road, Ballard Estate MALAYA KUALA LUMPUR Alfred Herbert India Ltd., Box 452 ARGENTINE REPUBLIC, URUGUAY, and PARAGUAY BUENOS AIRES Herbert Argentina., 25 de Mayo, 267 BRAZIL SAO PAULO Cimbra S. A., Rua Libero Badaro, 158 COVENTRY - ENGLAND HIGH POWER VERTICAL BORING AND TURNING Rear view showing Motor Drives to Machine and Rapid Power Traverse Motion HIGH POWER VERTICAL BORING AND TURNING MILLS Series ELECTRICAL EQUIPMENT is not included in the price of the machine but will be quoted on receipt of particulars of current available. The Machine requires a main motor of horizontal, foot mounting type. The Rapid Power Traverse requires a vertical flange mounted motor. One starter for each motor is required. COVENTRY - ENGLAND HIGH POWER VERTICAL BORING AND TURNING MILLS COVENTRY - ENGLAND HIGH POWER VERTICAL BORING AND TURNING MILLS

Series `D CUTTING COOLANT SYSTEM consisting of Tank, Electric Pump with switch, all necessary piping and guards. Guards are arranged with detachable portions for cleaning and can be supplied for single or Duplex Mills. COVENTRY - ENGLAND HIGH POWER VERTICAL BORING AND TURNING MILLS Series LEADING FEATURES

AND SPECIFICATIONS A COLUMN. In one piece with base for rigidity. B DRIVE. Motor drive by vee belts through multiplate lubricated clutch and geared transmission. C SPEEDS. Twelve speeds in geometrical progression. Sliding gears interlocked with driving clutch and hydraulically operated internal expanding brake. D FEEDS. Twelve positive feeds operate in vertical, horizontal, and angular directions. They are reversible and interlocked. A shearing pin is fitted to prevent damage through overload. E CHUCK. Has four hardened, independent, and reversible jaws mounted on slips and actuated by protected screws. This design avoids the need for screw cutting the jaws and is a distinct advantage when special jaws are required. It is driven by high tensile steel gear and pinion, the latter hardened and ground. The chuck is supported on a large diameter thrust track running in an oil bath. A reversing motion is fitted to the left-hand chuck spindle of Duplex Machines except when fitted with special reduction gear. F SPINDLE. The chuck spindle is made from a steel forging. The spindle is of the hollow type which allows pilot bars to be used and facilitates the removal of swarf. G TURRET. The pentagonal turret is made from a steel forging. The faces are machined and bored in position and provided with tapped holes for attaching toolholders and special tools. The turret holes are gauge size and fitted with quick-acting positive grip for boring bars, etc. A geared arrangement facilitates indexing by hand. The turret is fitted with an extremely powerful and efficient locking arrangement which will retain its accuracy indefinitely, and binds the turret solid with the slide over its entire base. H SLIDES. Narrow guides to all slides. Retainers cast integral with guideways. 

Adjustment provided by taper gibs. J SWIVELLING HEAD is positive and actuated by suitable gearing on the saddle of the machine. K RAPID POWER TRAVERSE. Available in all directions, interlocked with the feeds and controlled by a combined feed and rapid power traverse lever. The drive is by a small independent motor, and is protected against obstruction by a safety clutch. L HAND ADJUSTMENT Tool adjustment is made by handwheels and dials calibrated in thousandths. Scales are fitted to turret slide and cross slide and graduated to read 1/16. Dials and scales are fitted with adjustable pointers. M GEARS. All gears are of steel or phosphor bronze. Spur gears are of nickel chrome steel oil hardened to 461 Brinell and tooth form ground. N SHAFTS. All main drive shafts and most secondary shafts have solid ground splines. O GROUPED CONTROL. All controls are suitably grouped, reducing the operating time to a minimum. BEARINGS. Ball and roller bearings are fitted throughout transmission. LUBRICATION. Main bearings, driving gears, and gearboxes are automatically lubricated WITH FILTERED OIL from the pump. Other bearings and traveling units are lubricated from independent reservoirs. Less important bearings and isolated points are fitted with oil-impregnated bushes. S GUARDS. All gears are enclosed. No set screws, bolts, nor keys project on revolving parts. Guards are fitted to V-belts. MURRAY COMBINED SPEED AND FEED CHART COLOR CONTROL. EVERY FEATURE OF PRACTICAL VALUE CONTROL TURRET GROUP OPERATING GROUP J-Highest quality material used throughout the whole construction. Page SPEED AND FEED CHART SERIES DRIVE FEED Not available on this size. 042 062 083 125 166 250 050 075 100 150 200 300 SPECIAL FINE FEEDS can be supplied by arrangement, EXCEPT when Screw Cutting Attachment is fitted see MURRAY COMBINED FEED AND SPEED CHART COLOR CONTROL OPERATIONS. which the levers must be positioned is given by setting SPEEDS the control to the required speed or feed numeral. .

The diagram shows the feed and speed control and FEEDS the pointers for use with operation charts. LS A number of operation charts are supplied with each machine, and a typical chart is shown. The chart slips into the chart holder, and in use the upper knurled rim controls the pointer and positions the table speed numeral and symbols corresponding to each operation from number one up to number nine. The lower knob functions in a similar manner for the feeds. It will be apparent that these charts provide a simple and easily stored means of recording the most efficient speeds and feeds used on jobs. A chart may be filled up from experimental data found to give the best results on the first piece of a batch, and it will then provide an accurate record that will avoid the necessity for ex- periment on future batches. Alternatively, cards can be filled in by the planning office or foreman before the work is issued to the shop, and in this case, supervision is facilitated by the fact that the control arrangements show exactly the speed, feed, and operation number, and any departure from the planned speed or feed is immediately apparent. The back of the cards may be used to note times, prices, tools, and fixtures used, and a card will then provide a complete record of the job. The illustrations on this page call attention to a valuable feature for assisting in obtaining maximum output THE USE OF THE INTERMEDIATE TURRET POSITION Fig. 1 shows the normal turret position. Note the excessive tool overhang B necessary to enable the corner A of the turret to clear the top A SPECIAL TOOL HOLDER IS AVAILABLE FOR USE WITH THE INTERMEDIATE TURRET POSITION The stops on vertical and horizontal rods can be used as trips, or as dead stops for sizing by hand, and permanent collars are fitted to stop rods to act as safety limit switches. DIAL INDICATOR A dial indicator can also be fitted to enable absolute diametral adjustment of tool, independent of spring or backlash in machine details. Complete attachment can be supplied upon request. Page 15 SPECIAL FADOTATIONS The principal dimensions of these machines have been fixed as a result of many years' experience and will generally be found sufficient to accommodate most Vertical Boring and Turning Mill work. It sometimes happens, however, that the odd case requires a slightly larger swing or extra headroom in order to accommodate it on the machine. With this in mind, and to increase the usefulness of these machines, we can arrange, within certain limits, for these occasional requirements. The 36 Vertical Boring and Turning Mill can be supplied in the following form as an alternative to standard 1 The standard Mill fitted with a 42 faceplate in lieu of chuck for high speed and special high-speed ranges. All 36 machines can be supplied with SPECIAL TALL COLUMNS to increase total headroom distance from the chuck or faceplate surface to the bottom of the cross slide up to 12. Under these conditions, the length of the turret slide will be increased total headroom distance from chuck or faceplate surface to the bottom of the cross slide up to 14. Under these conditions, the length of the turret slide is increased in proportion. It must not be assumed that Tall Column and Extra Swing alternatives can be combined. All requirements for increased capacity should first be submitted to these Works for approval. Page 16 SPECIAL TALL JAWS can be supplied to meet cases where it is necessary to support work some distance from the chuck face. We make jaws approximately 4, 6, 8, and 12 tall, and these will generally be found to meet most cases. However, 

The height required for the special jaws must obviously be decided upon when considering the component to be machined.

Can usually be offered for special work but requirements should be submitted for confirmation. SPEED RANGE5 The design of the machine provides for supplying each machine to give any one of a number of speed ranges. See page 12 for particulars. The object of this is to provide a customer with the range of speeds most suited to produce efficiently the particular work to be dealt with. As a guide to the choice of a suitable range, we offer the following recommendations:

NORMAL SPEED RANGE will be found satisfactory for general-purpose work on any materials.

HIGH SPEED RANGE is recommended for use where the majority of the work consists of cast iron pieces and occasional aluminum details.

SPECIAL HIGH SPEED RANGE is recommended for non-ferrous metals, i.e., aluminum, brass, and bronze work of all kinds.

LOW SPEED RANGE on all machines is recommended for work consisting mainly of large-diameter high tensile steel pieces or work involving wide forming cuts, and when high-speed steel tools are to be used on large diameters.

SPECIAL HEAVY DUTY DRIVE is fitted to the 48 and 60 machines only. This drive is recommended for machining extremely hard or high tensile steel pieces at maximum diameters. We are always prepared to advise upon the most suitable speed range necessary to machine components. VARIABLE SPEED MOTORS can be fitted to meet certain requirements. Particulars of these can only be supplied upon receipt of definite information concerning the particular work to be dealt with. THE COOLANT SYSTEM illustrated on page 8 is the one normally supplied for use with our Vertical Boring and Turning Mills. It entails the provision of channels in the concrete foundation and a coolant tank sunk to floor level. However, it is sometimes inconvenient to provide for this method, and to meet such cases a Special Cutting Coolant system is available consisting of a metal tray complete with checker plates and guards, switch, tank, pipes, and fittings, and special electric suds pump. Particulars and prices can be supplied upon request. ATTACHMENTS. Where it is known that certain attachments will be required for use in conjunction with the machine, it is advisable to state this at the time of placing the order; it is not always possible to supply an attachment for a machine already installed, without incurring considerable expense. Page 17 SPECIAL ATTACHMENTS SCREW CUTTING The Screwcutting Attachment illustrated consists of a change gear box mounted on the supporting arm boss behind the cross slide end bracket of the machine. This box connects up with the horizontal feed supply shaft. A lever-operated dog selects either feed or screwcutting motion. The Attachment is suitable for external and internal threading using the vertical feed of the machine, or for scroll cutting when the horizontal feed is used. Change wheels are provided to cut the following pitches: ENGLISH PITCHES METRIC PITCHES It should be noted that machines supplied with Screwcutting Attachment for metric threads must be fitted with special metric feed screws, saddle worm gear, etc. Machines having English screws and saddle gearing are unsuitable for metric threading, whilst those arranged for metric threading are unsuitable for English pitches. The addition of this attachment precludes the use of fine feeds, and in certain circumstances alters the standard speed and feed rates given on page 12. Coarser pitches can be cut with the aid of an auxiliary gear box, and we invite customers to submit their requirements when considering this attachment. SPECIAL ATTACHMENTS TAPER TURNING FOR FLAT OR STEEP TAPERS AVOIDS NECESSITY FOR SWIVELING TURRET HEAD The attachment provides a means of machining tapers by connecting the vertical and horizontal feed shafts of the machine by means of spur gearing. A friction clutch is interposed in this drive. Gears are arranged for compounding, and an idler gear can be inserted in order to change the direction of the taper. The attachment is mounted on the left-hand end of the cross slide on right-hand single mills or on the inner ends of the cross slides of duplex mills. The control lever for quickly engaging the taper turning motion is placed adjacent to the existing control on the cross slide. The attachment will produce given tapers between 5 and 35 from the vertical or horizontal but cannot be arranged to provide tapers greater or less than these. Suitable gears can be provided for any taper required within these limits, but these tapers must be specified, and it will be apparent that an infinite range of tapers cannot be covered by the attachment. It should be noted that, in certain circumstances, the addition of the above attachment may restrict the capacity of the machine. Page 19 SPECIAL ATTACHMENTS TAPER TURNING FOR FLAT OR STEEP TAPERS AVOIDS NECESSITY FOR SWIVELING TURRET HEAD The attachment provides a means of machining tapers by connecting the vertical and horizontal feed shafts of the machine by means of worm gearing. A friction clutch is interposed in this drive. This type of attachment allows for machining tapers with a small angle measured from the vertical or horizontal. Gearing suitable for practically any required angle up to 35 from the vertical or horizontal can be provided, but it is necessary to specify the tapers which are to be machined. It will be appreciated that an infinite range of tapers cannot be covered by the attachment. It should be noted that, in certain circumstances, the addition of the above attachment may restrict the capacity of the machine. SPECIAL ATTACHMENTS PROFILE COPYING ATTACHMENT conveniently machined NOTE CAM IN POSITION ON BEAM The cam-controlled sliding tool holder reproduces the desired contour on the work. The sliding tool holder can be supplied either air-loaded.  BEAM IN OPERATING POSITION SPECIAL EQUIPMENT AXLE BOX EQUIPMENT PROVIDES EASY SET UP The holding equipment consists primarily of two self-centering jaws which grip the axle box on the horn cheeks. One of these jaws carries an auxiliary jaw with micrometer adjustment to allow the horn cheeks to be offset to the center of the axle box bore. This adjustment is sufficient to allow an offset in either direction. A pair of end stops are also provided for locating and setting the position of the bore relative to the end of the box. The boxes are also held in position by clamping, and special adjustable clamps are provided which will cover a very wide range of widths of box. Three boring bars are included in the equipment, one for rough boring, one for finish boring, and one for either under-facing or for radiusing the lower end of the bore. NOTE: when ordering COMBINED DOUBLE Boring and Reamer END CUTTER AND ADJUSTABLE FLOATING Bars, please state sizes MORE EQUIPMENT REAMER BAR of holes required to be FOR A MACHINE TOOL IS NO BETTER THAN ITS MAIN FRAME Front and rear views of Body Casting for a 48 Series D Machine. They are also typical of 36 and 60 sizes. The strong, well ribbed casting, of good shape, is designed to resist all cutting strains and absorb vibration due to high speeds and unbalanced work. Page 16 ERANDD__ COVENTRY - ENGLAND THE CROSS SLIDE and TURRET SLIDE are important members for rigidity and maintaining accuracy Cross Slide. Front view. showing narrow guide. The axis of the cross feed screw is under the vee. Cross Slide. Rear view. showing liberal ribbing to maintain rigidity and alignment. The slide is further braced by its attachment to the rigid body opposite. Front view of Turret Slide A Hardened and ground turret stem. B Narrow guide. Note the deep section of the slide above the turret seating. Rear view of Turret Slide COVENTRY - ENGLAND Freedom from chatter, when taking the heaviest possible cuts, can only be obtained with a super-turret mechanism as shown. collets, etc. Internal gear for revolving the turret. COVENTRY - ENGLAND The MAIN DRIVE of the machine, illustrating the accessibility for CLUTCH ADJUSTMENT, the well proportioned gearbox details, and control Bridge. The lever control is similar to that for feed change shown on Page 31 Clutch Box A Brake cylinder. B Multiplate drive clutch. Clutch shaft runs in ball and roller bearings, both lubricated. NOTE HYDRAULICALLY OPERATED, INTERNAL EXPANDING BRAKE Speed Box and Control Feed Change The feed changes are oper- ated by three levers in con- junction with the Murray Colour Feed and Speed Control. To obtain a given feed, the levers are set to a combi- nation of symbols which coincide with those indi- cated in the window of the Colour Control Instrument Page 31 ε= Д КАNDВ COVENTRY - ENGLAND The design of the chuck spindle location and drive is reflected in the shape and finish of the work produced. Design and QUALITY of components is illustrated. Chuck and Spindle Arrangement. Vee Ring type. A Forged Steel Hollow Spindle. Spigoted, bolted and dowelled to chuck. B Bearings specially manu- factured and assembled for their particular duty. C High Tensile Steel single helical internal gear spigoted, bolted and dowelled to chuck. D Chuck of robust construction well proportioned and ribbed. E Large diameter vee ring bearing. Chuck Drive and Seating A Hardened and ground pinion. B Chuck seating. Oil bath maintained by pump and registered on in- dependent gauge. C Rim of base which is enveloped by chuck rim. It is grooved and drained to prevent ingress of cutting cool- ant or dust. The type of journal and thrust bearings fitted is determined by the speed range and class of work on which machine will operate. IN CONCLUSION, we would call your attention to one or two facts which contribute to the reputation we enjoy, and which we are proud to uphold. Deliveries quoted for machines have, for many years, been strictly maintained. No effort on our part is spared to maintain delivery dates for machines, and subject to unforeseen circumstances, it can be regarded as a foregone conclusion that machines will be dispatched on time. This fact has earned for us a reputation second to none in the Engineering Industry. Our interest in machines of our manufacture does not terminate with the installation of them in customers' Works. It is obvious that the quality of a machined component very largely depends on the accuracy of the machine employed. We are anxious that our machines shall produce and maintain the same high standard of finish throughout the whole of their working life as originally available when purchased. With this in view, an efficient Service Department forms a valuable part of our organization. This Department is placed at the disposal of our customers for the purpose of supplying advice and general service, which is occasionally necessary after machines have been in commission for some time. THE SERIAL NUMBER OF YOUR MACHINE As Vertical Boring and Turning Mill IS STAMPED Specialists, we have had many years HERE. experience on the application of these Machine Tools. We invite your inquiries Reference to this and we are always prepared to supply will facilitate any guaranteed time estimates, tool layouts Service you may require. and equipment to meet special require- ments. We extend a cordial invitation to visit our Works where machines can be in- spected during the course of manufac- ture. The care and attention given to detail and the use made in our own Works of various sizes of Vertical Boring and Turning Mills will be apparent to all who take advantage of this invitation. COVENTRY - ENGLAND NORTHEY ROAD WORKS FOLESHILL COVENTRY PRINCIPAL DIMENSIONS EQUIPMENT DATA SHEET FOUR JAW INDEPENDENT CHUCK