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Tools for the Workshop

Tools for the Workshop Vero Auto-Drill Built by Vero Precision Engineering Ltd., South­ ampton this turret-head tape-programmed drilling machine with electrical control is marketed by the Cat- mur Machine Tool Corpn. Ltd., 103 Lancaster Road, A Selection of Equipment of Use in the Production and Maintenance London, W11. It is capable of drilling and tapping a pattern of up of Aircraft, Missiles, Space Vehicles and their Components to 600 holes of six different sizes in any order without manual intervention. This is achieved by control­ ling both the work position and the six-spindle turret Fully Automatic Loading and Unloading Lathe Mech­ Numerically Controlled Operations head entirely automatically from a punched tape. anism First production runs of a numerically controlled The P.5 Automatic Multi-Tool and Profile Turning combination milling, drilling and boring machine on Lathe produced by Churchill-Redman Ltd, Halifax, aircraft parts have been successfully made by the is now available with a fully automatic loading and Boeing Company, Wichita, Kansas Division, USA. unloading mechanism. The full arrangement also The unit, a Milwaukee-Matic produced by Kearney enables the workpiece to be transferred from one and Trucker, assists economical and close-tolerance machine to another by a conveyer and elevator production of small components for the Boeing system. No modifications are required to be made to B-52G missile-launching system. the machine to receive the mechanism. B-52G parts such as elbows, housings or forgings of the approximate size and shape of an 18 in. cube, can be handled on the machine. The unit automatically docs any combination of drilling, tapping, reaming, surface milling, boring or counter-boring according to directions from a stand­ ard Flexowriter punched paper tape. This can be programmed manually or through a 705 computer. There are two (8-channel) tape readers in cabinets adjacent to the machine, so that as it proceeds from one part to the next, a second tape is ready. Two different parts are worked alternately; tooling costs are kept down because only one part holder is needed for each part. General Electric point-to-point equip­ ment is used for tape control. The control system, which is manufactured by Airmec Ltd., High Wycombe, operates by measuring accurately the total angular rotation of the leadscrews, a function performed by a Positioner Unit consisting The arrangement consists of two pivoted arms, the of a scries of commutator-type switches. Manual loading arm fixed to the tailstock and the unloading operation, if required, is performed from a control arm to the top of the headstock. The arms are similar, panel, and automatic drilling is controlled by a plastic having power operated gripping fingers at their ends. tape carrying information for up to 600 complete Each arm is a radius of the are between the 'on' or drilling or tapping operations. The outstanding feature 'off' loading conveyor and the working position of of the control system is that it is purely electrical, the work-piece. The arms are hydraulically and (rather than electronic) in nature, and routine main­ electrically controlled and their control system fits in tenance can, therefore, be carried out by works ideally with that of the lathe—which is similar. electrical staff. The loading and unloading units are extremely The drilling machine itself is fitted with a 32 in. x versatile and can easily be made to accommodate a 9 in. coordinate table having a longtiudinal traverse wide variety of components. As separate arms are of 24 in. and a cross traverse of 12 in. The positioning used for loading and unloading, a component which speed is 60 in./min. and an overall drilling accuracy varies considerably in shape before and after mach­ of + 0•003 in. is guaranteed. The turret head is ining can also be handled. A device for tool storage and changing can select fitted with six chucks for accommodating drills of up The unloading arm gripping fingers can also be from a total of 31 tools, which are programmed to to 5/16 in. diameter, and spindle speeds from 300 to made to pivot through 180 deg., so that the component operate on a 3-axis basis: longitudinal, vertical and 6,000 r.p.m. can be selected. The maximun distance can be placed on the unload conveyor in the desired in depth. They are mostly standard drills, reamers, from the spindle to the table is 18 in. position depending on whether the next machine cutters and similar tools and are pre-set. The tool- requires the component to be turned round or whether selection device picks its tools by a binary code of Hacksaw Blades it is required to be left in the same position. rings and grooves on the tool holders and can select the proper tool, insert it in the spindle, and simul­ The open fronted construction of the P.5 gives the Hacksaw blades produced by J. Stead & Co. Ltd. maximum accessibility to the workpiece and tooling, taneously return the previously-used one to a vacancy Manor Works, Cricket Inn Road, Sheffield 2, are in the tool magazine, in a transfer time of about eight whilst the vertical machine construction with the hardened on the teeth only, and give a cutting per­ sees. overhead carriage gives unrestricted chip clearance formance equal to high-speed hacksaw blades. As it downwards into the machine base. Automatic swarf The work table is designed for indexing to any of is only hardened on the teeth a flexibility is intro­ clearance is provided by means of a conveyor in the eight 45 deg. positions, so that the tool has 360 deg. duced into the blade, which, it is claimed, helps to machine base which clears the swarf from the pan of access to the part without changing the holding eliminate the breakage of blades by unskilled labour. the machine to the container at the rear of the machine fixture. Double work-load stations allow the operator The Steadfast Flexible High-speed blade will cut any or into a swarf deposit channel. to load one part while another is being machined. type of steel and withstand misuse. 86 Aircraft Engineering http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Tools for the Workshop

Aircraft Engineering and Aerospace Technology , Volume 32 (3): 1 – Mar 1, 1960

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb033224
Publisher site
See Article on Publisher Site

Abstract

Vero Auto-Drill Built by Vero Precision Engineering Ltd., South­ ampton this turret-head tape-programmed drilling machine with electrical control is marketed by the Cat- mur Machine Tool Corpn. Ltd., 103 Lancaster Road, A Selection of Equipment of Use in the Production and Maintenance London, W11. It is capable of drilling and tapping a pattern of up of Aircraft, Missiles, Space Vehicles and their Components to 600 holes of six different sizes in any order without manual intervention. This is achieved by control­ ling both the work position and the six-spindle turret Fully Automatic Loading and Unloading Lathe Mech­ Numerically Controlled Operations head entirely automatically from a punched tape. anism First production runs of a numerically controlled The P.5 Automatic Multi-Tool and Profile Turning combination milling, drilling and boring machine on Lathe produced by Churchill-Redman Ltd, Halifax, aircraft parts have been successfully made by the is now available with a fully automatic loading and Boeing Company, Wichita, Kansas Division, USA. unloading mechanism. The full arrangement also The unit, a Milwaukee-Matic produced by Kearney enables the workpiece to be transferred from one and Trucker, assists economical and close-tolerance machine to another by a conveyer and elevator production of small components for the Boeing system. No modifications are required to be made to B-52G missile-launching system. the machine to receive the mechanism. B-52G parts such as elbows, housings or forgings of the approximate size and shape of an 18 in. cube, can be handled on the machine. The unit automatically docs any combination of drilling, tapping, reaming, surface milling, boring or counter-boring according to directions from a stand­ ard Flexowriter punched paper tape. This can be programmed manually or through a 705 computer. There are two (8-channel) tape readers in cabinets adjacent to the machine, so that as it proceeds from one part to the next, a second tape is ready. Two different parts are worked alternately; tooling costs are kept down because only one part holder is needed for each part. General Electric point-to-point equip­ ment is used for tape control. The control system, which is manufactured by Airmec Ltd., High Wycombe, operates by measuring accurately the total angular rotation of the leadscrews, a function performed by a Positioner Unit consisting The arrangement consists of two pivoted arms, the of a scries of commutator-type switches. Manual loading arm fixed to the tailstock and the unloading operation, if required, is performed from a control arm to the top of the headstock. The arms are similar, panel, and automatic drilling is controlled by a plastic having power operated gripping fingers at their ends. tape carrying information for up to 600 complete Each arm is a radius of the are between the 'on' or drilling or tapping operations. The outstanding feature 'off' loading conveyor and the working position of of the control system is that it is purely electrical, the work-piece. The arms are hydraulically and (rather than electronic) in nature, and routine main­ electrically controlled and their control system fits in tenance can, therefore, be carried out by works ideally with that of the lathe—which is similar. electrical staff. The loading and unloading units are extremely The drilling machine itself is fitted with a 32 in. x versatile and can easily be made to accommodate a 9 in. coordinate table having a longtiudinal traverse wide variety of components. As separate arms are of 24 in. and a cross traverse of 12 in. The positioning used for loading and unloading, a component which speed is 60 in./min. and an overall drilling accuracy varies considerably in shape before and after mach­ of + 0•003 in. is guaranteed. The turret head is ining can also be handled. A device for tool storage and changing can select fitted with six chucks for accommodating drills of up The unloading arm gripping fingers can also be from a total of 31 tools, which are programmed to to 5/16 in. diameter, and spindle speeds from 300 to made to pivot through 180 deg., so that the component operate on a 3-axis basis: longitudinal, vertical and 6,000 r.p.m. can be selected. The maximun distance can be placed on the unload conveyor in the desired in depth. They are mostly standard drills, reamers, from the spindle to the table is 18 in. position depending on whether the next machine cutters and similar tools and are pre-set. The tool- requires the component to be turned round or whether selection device picks its tools by a binary code of Hacksaw Blades it is required to be left in the same position. rings and grooves on the tool holders and can select the proper tool, insert it in the spindle, and simul­ The open fronted construction of the P.5 gives the Hacksaw blades produced by J. Stead & Co. Ltd. maximum accessibility to the workpiece and tooling, taneously return the previously-used one to a vacancy Manor Works, Cricket Inn Road, Sheffield 2, are in the tool magazine, in a transfer time of about eight whilst the vertical machine construction with the hardened on the teeth only, and give a cutting per­ sees. overhead carriage gives unrestricted chip clearance formance equal to high-speed hacksaw blades. As it downwards into the machine base. Automatic swarf The work table is designed for indexing to any of is only hardened on the teeth a flexibility is intro­ clearance is provided by means of a conveyor in the eight 45 deg. positions, so that the tool has 360 deg. duced into the blade, which, it is claimed, helps to machine base which clears the swarf from the pan of access to the part without changing the holding eliminate the breakage of blades by unskilled labour. the machine to the container at the rear of the machine fixture. Double work-load stations allow the operator The Steadfast Flexible High-speed blade will cut any or into a swarf deposit channel. to load one part while another is being machined. type of steel and withstand misuse. 86 Aircraft Engineering

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Mar 1, 1960

There are no references for this article.