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A Useful ToolRoom Adjunct

A Useful ToolRoom Adjunct April, 1936 AIRCRAF T ENGINEERING A n Automatic Duplicating Miller for Production, with Uses also in the Experimental Shop H E Keller Automatic Tool Room Machine, for which Alfred Herbert, Ltd., are the agents in this country, is an unusually powerful milling machine, operated by a simple electrical control. By means of this control the shape of a master is reproduced automatically by the machine. The job may be either profiling in two dimen­ sions, or a solid form requiring three dimension cutting. In each case, a tracer passes over the master form, and the cutter duplicates its pat h precisely. The master forms used can be very simple. Light metal templates are sufficient for the heaviest contouring jobs. Th e machine will produce automatically all kinds of dies, including forging and drop stamping dies, blanking, trimming, beading and panelling dies for sheet metal work, metal cutters and dies for castings, brass stamping dies, moulds for metal, rubber and glassware, embossing and forming dies, jigs, fixtures and a wide range of tool room work. The work is produced to very fine limits, and as the operation is completely automatic, the operator is free to set u p other work, or to do wha t little hand finishing is required. To deal with the work on the Keller Auto­ 0·001 in. of the tracer point is more tha n suffi­ The tracer is a simply designed, sturdily mati c Die Sinker, a few sheet metal templates cient t o achieve thi s result. This extreme sensi­ constructed precision instrument. It guides the ar e made by which the various dimensions of tivit y is permanently independent of the size horizontal and vertical movements of the th e pieces, to be machined are controlled. of mill used, depth of cut, or hardness of the machine, while maintaining continuous contact material to be machined. These templates can be checked by the in­ with a template, always seeking the edge, yet spection department before being used on the never breaking through it. Since th e tracer and Th e operator's responsibility then, in govern­ ing the general direction of machine travel, is machine, and they enable the work to be cutter spindle are both mounted on th e same accurately produced under automatic control, merely to manipulate the position of the spring vertical slide, having an adjustably fixed instead of relying on the skill of the operator a s determined by th e contour of th e template. relation to each other, the cutter follows the t o produce the various dimensions to the pat h made by the tracer. I n addition to the applications mentioned necessary degree of accuracy. above in connexion with tool room and pro­ The spindle of the tracer is mounted in a The jig boring feature on this machine is a duction work, Keller Automatic Die Sinkers sleeve on a ball joint. One end carried the very valuable addition, particularly for the can be, and are being, used to advantage on the interchangeable tracer point, the other carries various boring operations in th e machining of the machining of experimental aero and motor car th e four contacts controlling the up, down, engine parts, before being put into production. master and auxiliary connecting rods for radial right and left movements of th e machine. Two engines. On work of this kind it will be appreciated of them are normally closed by the tension of A further advantage is tha t if the component a spring. Before the tracer point touches the tha t no chucks or fixtures are available, and is adopted for use after the experimental stage, template, the direction of travel will be away th e work generally has to be cut out of a solid and a quantit y is require d quickly, th e templates from and in a line 45 deg. between, the closed block of material, the high cost of stampings which had been used on th e Keller machine can contacts. However, when the tracer point for one or two part s being prohibitive. again be brought into use, and will enable meets th e template, very slight pressure over­ If such work were produced on an ordinary production to be started, until the necessary comes the spring tension ; and the motion of milling machine, an elaborate system of marking jigs and fixtures can be made for producing th e machine is changed in accordance with the out, and a large number of intricate settings th e parts in regular production machines. shape of th e template. A movement of less tha n would be involved. Trad e Publications Received Lists of British Standard Specifications and The D.H. 86A. 'The "Arclight" Universal Drafting Table. Methods of Test, 1936. [E. N. Mason & Sons, Ltd., Colchester.] The Hornet Moth. [British Standards Institution, London.] [The De Havilland Aircraft Co., Ltd., The Shorter-Double-Duro Process. The "Noral" Handbook.. Hatfield.] [Shorter Process Company, Ltd., Sheffield.] Revised and additional loose leaf data sheets, Microscopic Examination of "Hiduminium" The Taylor-Hobson Profile Projection Equipment. including particulars of a new alloy—N.A. Alloys. Data Sheet No. 32. An Important Advance in Cutter Grinding. 57 S. Physical and Mechanical Properties of " Hidu- [Taylor, Taylor & Hobson, Ltd., Leicester.] [Northern Aluminium Co., Ltd., London.] minium," R.R.50. Data Sheet, No. 34. The "Renaux" Elastic Engine Mounting. Encyclopædia. [High Dut y Alloys, Ltd., Slough.] [M.C.L. and Repetition, Ltd., Birmingham.] [Gallay, Ltd., Willesden.] Aluminium Sheet, Strip and Circles. Junior Technical School for Instrument Making. Aluminium Sections. De Havilland Aircraft. [Northampton Polytechnic Institute, [The British Aluminium Co., Ltd., London.] The Dragonfly. London.] Handbook of Information including Indexed The Dragon Rapide. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

A Useful ToolRoom Adjunct

Aircraft Engineering and Aerospace Technology , Volume 8 (4): 1 – Apr 1, 1936

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb030036
Publisher site
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Abstract

April, 1936 AIRCRAF T ENGINEERING A n Automatic Duplicating Miller for Production, with Uses also in the Experimental Shop H E Keller Automatic Tool Room Machine, for which Alfred Herbert, Ltd., are the agents in this country, is an unusually powerful milling machine, operated by a simple electrical control. By means of this control the shape of a master is reproduced automatically by the machine. The job may be either profiling in two dimen­ sions, or a solid form requiring three dimension cutting. In each case, a tracer passes over the master form, and the cutter duplicates its pat h precisely. The master forms used can be very simple. Light metal templates are sufficient for the heaviest contouring jobs. Th e machine will produce automatically all kinds of dies, including forging and drop stamping dies, blanking, trimming, beading and panelling dies for sheet metal work, metal cutters and dies for castings, brass stamping dies, moulds for metal, rubber and glassware, embossing and forming dies, jigs, fixtures and a wide range of tool room work. The work is produced to very fine limits, and as the operation is completely automatic, the operator is free to set u p other work, or to do wha t little hand finishing is required. To deal with the work on the Keller Auto­ 0·001 in. of the tracer point is more tha n suffi­ The tracer is a simply designed, sturdily mati c Die Sinker, a few sheet metal templates cient t o achieve thi s result. This extreme sensi­ constructed precision instrument. It guides the ar e made by which the various dimensions of tivit y is permanently independent of the size horizontal and vertical movements of the th e pieces, to be machined are controlled. of mill used, depth of cut, or hardness of the machine, while maintaining continuous contact material to be machined. These templates can be checked by the in­ with a template, always seeking the edge, yet spection department before being used on the never breaking through it. Since th e tracer and Th e operator's responsibility then, in govern­ ing the general direction of machine travel, is machine, and they enable the work to be cutter spindle are both mounted on th e same accurately produced under automatic control, merely to manipulate the position of the spring vertical slide, having an adjustably fixed instead of relying on the skill of the operator a s determined by th e contour of th e template. relation to each other, the cutter follows the t o produce the various dimensions to the pat h made by the tracer. I n addition to the applications mentioned necessary degree of accuracy. above in connexion with tool room and pro­ The spindle of the tracer is mounted in a The jig boring feature on this machine is a duction work, Keller Automatic Die Sinkers sleeve on a ball joint. One end carried the very valuable addition, particularly for the can be, and are being, used to advantage on the interchangeable tracer point, the other carries various boring operations in th e machining of the machining of experimental aero and motor car th e four contacts controlling the up, down, engine parts, before being put into production. master and auxiliary connecting rods for radial right and left movements of th e machine. Two engines. On work of this kind it will be appreciated of them are normally closed by the tension of A further advantage is tha t if the component a spring. Before the tracer point touches the tha t no chucks or fixtures are available, and is adopted for use after the experimental stage, template, the direction of travel will be away th e work generally has to be cut out of a solid and a quantit y is require d quickly, th e templates from and in a line 45 deg. between, the closed block of material, the high cost of stampings which had been used on th e Keller machine can contacts. However, when the tracer point for one or two part s being prohibitive. again be brought into use, and will enable meets th e template, very slight pressure over­ If such work were produced on an ordinary production to be started, until the necessary comes the spring tension ; and the motion of milling machine, an elaborate system of marking jigs and fixtures can be made for producing th e machine is changed in accordance with the out, and a large number of intricate settings th e parts in regular production machines. shape of th e template. A movement of less tha n would be involved. Trad e Publications Received Lists of British Standard Specifications and The D.H. 86A. 'The "Arclight" Universal Drafting Table. Methods of Test, 1936. [E. N. Mason & Sons, Ltd., Colchester.] The Hornet Moth. [British Standards Institution, London.] [The De Havilland Aircraft Co., Ltd., The Shorter-Double-Duro Process. The "Noral" Handbook.. Hatfield.] [Shorter Process Company, Ltd., Sheffield.] Revised and additional loose leaf data sheets, Microscopic Examination of "Hiduminium" The Taylor-Hobson Profile Projection Equipment. including particulars of a new alloy—N.A. Alloys. Data Sheet No. 32. An Important Advance in Cutter Grinding. 57 S. Physical and Mechanical Properties of " Hidu- [Taylor, Taylor & Hobson, Ltd., Leicester.] [Northern Aluminium Co., Ltd., London.] minium," R.R.50. Data Sheet, No. 34. The "Renaux" Elastic Engine Mounting. Encyclopædia. [High Dut y Alloys, Ltd., Slough.] [M.C.L. and Repetition, Ltd., Birmingham.] [Gallay, Ltd., Willesden.] Aluminium Sheet, Strip and Circles. Junior Technical School for Instrument Making. Aluminium Sections. De Havilland Aircraft. [Northampton Polytechnic Institute, [The British Aluminium Co., Ltd., London.] The Dragonfly. London.] Handbook of Information including Indexed The Dragon Rapide.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Apr 1, 1936

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