Proceedings of the Nineteenth International Machine Tool Design and Research Conference: held in Manchester, 13th – 15th September, 1978

Front Matter....Pages i-xiv
Front Matter....Pages 1-1
Development and Present Level of Numerical Controls....Pages 3-12
Principle and Examples of a Modular Multiprocessor NC System....Pages 13-17
Software for a Computer Numerical Control System Designed for Adaptive Control Research....Pages 19-26
A Microprocessor controller to Provide Low Cost Numerical Control....Pages 27-35
Front Matter....Pages 37-37
Printed Circuit Motor Feed Drives for a C.N.C. Lathe....Pages 39-45
Feed Drive System on Large NC Machine Tools....Pages 47-54
Computer Aided Design of Closed Loop Controlled Electrical Feed Drives....Pages 55-59
Safety Aspects in Design NC Turning Machines....Pages 61-67
Front Matter....Pages 69-69
An Open Loop C.N.C. Lathe with Optimised Turning Parameters....Pages 71-78
Stand-Alone Interactive Computer Systems for NC Tape Preparation....Pages 79-86
Spam: A Software Package Aiding the Manufacturing with NC Machine Tools....Pages 87-93
Front Matter....Pages 95-95
Low Cost Externally Pressurized Air-Bearings....Pages 97-105
Performance Characteristics of Hydrodynamic Journal Bearings with Rolling Pads....Pages 107-113
The Friction Characteristics and the Sliding Stability of Machine Tool Slideways which Employ PTFE-Metal Composite Material....Pages 115-123
The Prediction of Plate-Deflection and Radial Gripping Force for a Three Jaw Diaphragm Chuck....Pages 125-130
The Measurement of Gripping Force and Slip Torque of Components Held by an Expanded Mandrel....Pages 131-135
Face Drivers as a Modern Gripping Tool Operational Limits — Design and Performance....Pages 137-144
Front Matter....Pages 145-145
Design Conception of Hierarchical Modular Construction — Manufacturing Different Kinds of Machine Tools by Using Common Modules....Pages 147-153
The Elastic Behaviour of Mechanical Press Machines....Pages 155-162
CAD/CAM System for Roll Pass Design....Pages 163-170
Front Matter....Pages 145-145
Computer Aided Progressive Die Design....Pages 171-176
Front Matter....Pages 177-177
Validation of Audiometry in the Machine Tool Industry....Pages 179-183
The Accuracy of Noise Measurements on Machine Tools under Practical Conditions....Pages 185-190
A Method to Determine the Chatter Threshold....Pages 191-196
Optimum Design Procedure of Dynamic Damper for Machine Tool Structures....Pages 197-203
Front Matter....Pages 205-205
Smooth Edge Blanking and Piercing Using Conventional Presses....Pages 207-216
An experimental Study of the Double Cropping Process....Pages 217-224
Fine Bending With Counter Pressure....Pages 225-233
Experiments Into the Inertial Deformation of Clamped Rectangular, Square and Triangular Diaphragms....Pages 235-246
A Computer-Controlled Simulation of Hot Working by the Flat Compression Test on a High Speed Servo-Hydraulic Testing Machine....Pages 247-253
Punch Load Requirements in Warm Extrusion of Steel....Pages 255-263
Pressure Distribution and Friction in Extrusion Containers....Pages 265-269
Ribbon Winding of Metal Forming Dies with Different Elastic Properties of Core and Coil....Pages 271-278
Front Matter....Pages 279-279
CAPSY — A Dialogue System for Computer Aided Manufacturing Process Planning....Pages 281-288
A Computer Based Approach to Heuristic Scheduling....Pages 289-294
Computer AIDED Estimation of the Manufacturing Time for Turned Components....Pages 295-303
Front Matter....Pages 305-305
Estimation of Handling Cost Reductions Due to Layout Changes....Pages 307-313
Computer-Aided Material Handling in Flexible Manufacturing Cells....Pages 315-322
Digital Simulation of a Proposed Flexible Manufacturing System....Pages 323-329
Front Matter....Pages 331-331
Group Technology in UK Foundries....Pages 333-340
Front Matter....Pages 331-331
Is the NC Lathe the Most Economic Solution in Every Case?....Pages 341-351
Suitability Testing for Group Technology....Pages 353-364
A Management Tool for Predicting the Benefits to a Company of Group Technology....Pages 365-371
Front Matter....Pages 373-373
Continuous Measurement of Linear Motion Errors in Single Tool Cutting....Pages 375-381
Surface Roughness Measurement: Alternatives to the Stylus....Pages 383-390
A Study on the Effect of the Structural Vibration of a Machine Tool to the Circumferential Surface Roughness....Pages 391-398
Front Matter....Pages 399-399
What is a D.C.C. Inspection Machine?....Pages 401-406
The Use of a Microprocessor System for On-Line Quality Control in Manufacturing....Pages 407-414
Inaccuracies of Large Crankshafts: Causes, Measurement and Correction....Pages 415-422
Front Matter....Pages 423-423
The Application of Polycrystalline Compacts for Ferrous Machining....Pages 425-434
The Performance of Double Margin drills with Both Margins Cutting....Pages 435-441
The Assessment of Tool Life in Peripheral Milling....Pages 443-449
Novel Ways of Improving the Performance of Sawing Operations....Pages 453-460
Cutting Process of Plastics by Thin Knives....Pages 461-468
Improvement of Machinability and Grindability Induced by Means of Hydrogen Addition for the Material to be Cut and Grind....Pages 469-474
Front Matter....Pages 475-475
Circular Saw Vibration During Initial Engagement....Pages 477-480
Analysis and Application of the Electro-Magnetic Servo Damper....Pages 481-486
Optimum Vibration of Vibratory Feeder Loaded with Handling Parts....Pages 487-492
A New Load Cell Dynamometer for Measuring the Dynamic Cutting Coefficients....Pages 493-500
Front Matter....Pages 501-501
Fine Hole Drilling Using Electrochemical Machining....Pages 503-510
Front Matter....Pages 501-501
Further Effects of Process Parameters on the Incidence of Sparking in Electrochemical Machining....Pages 511-516
An Investigation on the Characteristics of Electrolytic Superfinishing....Pages 517-524
Residual Stresses in Workpieces After Peripheral Electrochemical Grinding....Pages 525-532
Electrochemical Effects on Shape Reproduction in Electrochemical Machining....Pages 533-540
Front Matter....Pages 541-541
Study on the High Speed Machining by EDM Using a Moving Coil Head Type Feed Control....Pages 543-549
The Effectiveness of Non-Rectangular Current-Pulse Forms in Electro-Discharge Machining....Pages 551-557
The Use of Acoustic Techniques for Monitoring and Controlling the E.D.M. Process....Pages 559-566
In-Process Optimization of Electro-Discharge Machining....Pages 567-574
Front Matter....Pages 575-575
Materials Processing with a High Power Laser....Pages 577-584
Machine Design and Thermal Aspects of the Friction Welding Process....Pages 585-590
Some Aspects of Material Hardening with Pulsed Laser Beams....Pages 591-596
Front Matter....Pages 597-597
Crush Dressing at Full Wheel Speed....Pages 599-606
The Influence of Diamond Geometry on the Stability of the Grinding Wheel Dressing Process....Pages 607-614
Wheel-Workpiece Conformity in form Grinding....Pages 615-621
Measurement of Visible Defects of a Ground Surface....Pages 623-628
A Study of the Heat Flux at Which Burn Occurs in Creep Feed Grinding....Pages 629-636
Metallurgical Effects Associated with Grinding....Pages 637-644
Grindability Study of CBN Wheels....Pages 645-653