Proceedings of the Twenty-First International Machine Tool Design and Research Conference : Held in Swansea, UK, 8th-12th September 1980

Front Matter....Pages i-x Opening Address....Pages 1-4 Front Matter....Pages 5-5 Optimal Use of Visioplasticity Analysis....Pages 7-12 Simulation of Contact Pressure Distribution on Tool Surface by Ubet....Pages 13-20 Plastic Analysis of Flange Wrinkling in Axisymmetrical Deep-Drawing....Pages 21-28 Analysis of Strip Rolling as an Adiabatic Process....Pages 29-32 Residual Stresses at Various Types of Plastic Superficial Deformation....Pages 33-38 Control of a Servohydraulic Press for the Simulation of Hot Strip Rolling with the Plane Strain Compression Test....Pages 41-49 Basic Studies of Roll Forging I....Pages 51-56 Basic Studies of Roll Forging II....Pages 57-62 Optimum Roll Pass Schedules on the Cold Roll Forming Process of Symmetrical Channels....Pages 63-67 Analysis of Roll Torque in Profile Ring-Rolling of L-Sections....Pages 69-74 An Investigation into the Possibility of Roll Peen-Forming: Some Experimental Results....Pages 75-84 On the Peen-Forming of Metals....Pages 85-93 An Upper Bound Solution for the Extrusion of Square Section from Round Bar through Converging Dies....Pages 97-105 Effective Fitting Pressure Distribution in the Design of Extrusion Dies....Pages 107-113 On the Cropping of Single Tubes and Tube Bundles....Pages 115-122 A Pneumatic Accelerating Device Installed on Press Machine and its Application to High Speed Cropping....Pages 123-128 A Low Cost Blanking Tool with Bainite Steel Sheet Laminated....Pages 129-138 The Development of Burr-Free Blanking: Roll Blanking....Pages 139-146 An Investigation into the Phenomenon of ‘Partially Restrained Injection’ during Kinetic Heading....Pages 149-155 Front Matter....Pages 5-5 Flashless Forging Long Prismatic Shapes....Pages 157-163 An Experimental Study of the Effects of Sintering Conditions and Aspect Ratio on the Properties of Upset Iron Compacts....Pages 165-174 An Experimental and Theoretical Study of Upsetting of Sintered Iron Compacts....Pages 175-181 Heat Generation in the High Voltage Discharge Forming of Sponge Iron Powders....Pages 183-189 The Working of Aluminium 6% Magnesium Alloy Sheet at Elevated Temperatures....Pages 191-199 Analysis of Some Temperature Effects in the Electroforming of Iron Foil and Moulds....Pages 201-205 Heat Transfer during Hot Upsetting in Heated Dies....Pages 209-215 Die Manufacture by Superplastic Hobbing....Pages 217-222 Producing Superplastic Tubular Tee-Joints by Thermoforming....Pages 223-229 A Study of Age-Cracking in Deep Drawn Stainless Steel....Pages 231-236 Effects of Vibration on the Blank Holder in Cup Drawing....Pages 237-242 Fixed and Floating Plug Vibration Modes in Tube Drawing....Pages 243-249 Front Matter....Pages 251-251 The Newly Developed CBN Cutting Tool....Pages 253-258 Surface Generation by Super High Speed Cutting up to 1200m/s....Pages 259-265 Orthogonal Machining of Polymers....Pages 267-273 The Effect of Cutting Conditions on the Built-Up Edge....Pages 275-280 Identification and Optimum Control of Metal Cutting Process....Pages 283-287 The Influence of Temperature on the Machinability of Stellite 6....Pages 289-296 Some Features of Brittle Failure of Cutting Tools during Interrupted Cutting....Pages 297-303 A Feasibility Analysis of a Novel form of High Speed Grinding Wheel....Pages 305-311 Front Matter....Pages 251-251 Achieving and Monitoring High-Rate Centreless Grinding....Pages 313-322 Comparison of Creep Feed and Conventional Grinding....Pages 323-328 A Simple Model for Predicting the Possible Surface Roughness of a Cylindrically Traverse Ground Workpiece, When Using Wheels Dressed with Single Point Diamond Tools....Pages 329-336 Programmable Adaptive Control of EDM....Pages 339-343 Role of Impurities in Electric Discharge Machining....Pages 345-350 Heat Transfer Modelling of Electric Discharge Machining....Pages 351-358 An Evaluation of Some Theoretical Approaches to ECM Workpiece Profile Prediction....Pages 359-366 Electrolyte History Effects during Machining of Steps in Long Flowpath ECM....Pages 367-371 Experimental Investigations into Electrochemical Drilling (ECD) in Steels....Pages 373-380 Effect of Magnetic Field on Electro-Chemical Lapping....Pages 381-385 Front Matter....Pages 387-387 On the Improvement of Viscous Lubricants for Coldforming Processes....Pages 389-396 On the Influence of the Lubrication in Sheet Metal Forming on the Variation in The ‘Plasticity Reserve’....Pages 397-403 Coated High-Speed Steel Tools for Improved Thread Cutting Productivity....Pages 405-410 The Performance of Cutting Tools with Unusual Forms....Pages 411-419 Wear of Cutting Tools....Pages 421-430 Contribution of Al2O3 Inclusions to Tool Wear....Pages 431-437 Optimization of Functional Properties of Machine Tool Spindle Bearing Systems....Pages 441-448 The Behaviour of a Total Cross Flow Hydrostatic Thrust Bearing....Pages 449-459 The Friction and Wear Behaviour of Plain Slideways....Pages 461-467 Wear Characteristics of PTFE-Metal Composites When Used under Machine Tool Slideway Conditions....Pages 469-473 Front Matter....Pages 387-387 The Effect of Roll Wear on the Profile and the Mechanical Properties of Cold Rolled Steel Strips....Pages 475-482 Front Matter....Pages 483-483 Modelling of Mechanical Structures Based on Modal Parameters....Pages 485-493 Evaluation of Modular Machine Characteristics in a Flexible Manufacturing System Complex — A Japanese National Project....Pages 495-501 Experimental-Computational Identification of Weak Constructional Elements of Cutting Machine Tools....Pages 503-508 The Attractions of Hooke Joints in Heavy Rolling Mills....Pages 509-515 Identification of Noise Sources during Press Work Operations in Metal Working Production....Pages 517-522 The Effect of Platen Shape on the Sound Produced by Platen Deceleration....Pages 523-528 Front Matter....Pages 529-529 Case Studies Illustrating the Reduction of Noise from Mechanical Power Presses....Pages 531-537 The Temporary Threshold Shift and Its Relation to Permanent Inner Ear Damage Following Exposure to Impulse Noise....Pages 539-543 Noise Induced Tinnitus—A Hazard to Machine Tool Personnel....Pages 545-548 The Performance Analysis of Batch Production Cells Using Mathematical Modelling....Pages 549-557 Computer Simulation of the Effects of Inter-Cell Workload Transfer on the Performance of GT Systems....Pages 559-567 An Investigation on Reliability and Optimum Buffer Stocks of Machine Tool, Transfer Lines and Their Simulation on Digital Computers....Pages 571-576 The Use of a Digital Simulation Model as a Management Tool for Job Shop Control....Pages 577-586 A CAD System for Progressive Dies....Pages 587-591 Integrated CAD/CAM of Dies for Hot Forgings....Pages 593-602 Computer Aided Manufacturing System for Sheet Metal Parts....Pages 603-609 Computer Aided Accuracy Improvement in Large NC Machine Tools....Pages 611-618 Design for Mechanised Assembly....Pages 619-626 Back Matter....Pages 627-631