Electrochemical grinding (ecg) and electro chemical honing ppt
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ECG uses an electrolyte fluid and electric current to remove material from a workpiece for grinding. The electrolyte fluid conducts electricity between an electrode tool and the conductive workpiece material, allowing controlled material removal through electrochemical and mechanical processes. A similar process called electrochemical honing (ECH) can provide mirror finishes on metal surfaces.
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The document discusses rolling as a metal forming process. It describes rolling as a process where metal is passed between circular cylinders to change its shape through plastic deformation. Both hot and cold rolling processes are used, with hot rolling used for more drastic shape changes. Different types of rolling mills are covered, including two-high, three-high, four-high, cluster, and planetary mills. The advantages and disadvantages of rolling and its applications in producing items like tubes, rods, gears, and construction materials are also summarized.
PATTERN MATERIALS IN CASTING CLASS: BY POLAYYA CHINTADA
This document discusses pattern materials used in metal casting processes. It begins by defining a pattern as a replica of the component to be manufactured. Common pattern materials include wood, metal, plastic, wax and plaster. Wood patterns are inexpensive but can swell or shrink. Metal patterns are durable but more expensive. Plastic patterns are lightweight, durable and provide good surfaces. Wax patterns provide high accuracy and are used for investment casting. Plaster patterns can form intricate shapes but are only suitable for small castings. The document provides details on the properties, advantages and limitations of each material type.
PATTERN ALLOWANCES IN CASTING CLASS: BY POLAYYA CHINTADA
This document discusses pattern allowances in metal casting processes. It provides definitions of patterns and explains the need for various pattern allowances to account for shrinkage, machining, drafts or tapers, potential distortions, and shaking during casting removal. The key allowances discussed are shrinkage allowance, machining or finishing allowance, draft allowance, distortion allowance, and shake allowance. Specific percentages and dimensions for these allowances are provided for different metals like cast iron, cast steel, aluminum, and magnesium.
TEPES OF PATTERNS IN CASTING CLASS: BY POLAYYA CHINTADA
This document discusses different types of patterns and their applications in metal casting processes. It defines what a pattern is and lists various types of patterns including solid, split, multi-piece, match plate, gated, skeleton, sweep, loose piece, cope and drag, follow board, and segmental patterns. Examples of applications are provided for each pattern type in industries such as construction, defense, and hardware. The objectives, outcomes and applications of the production technology course are also summarized.
INTRODUCTION TO PRODUCTION TECHNOLOGY CLASS: BY POLAYYA CHINTADA
This document outlines the syllabus for a Production Technology course. The syllabus covers 5 units: (1) casting processes and gating systems, (2) metal forming processes like rolling and extrusion, (3) forging and sheet metal forming, (4) welding processes and defects, and (5) plastics processing and powder metallurgy. The course aims to explain different metal casting and forming processes, compare working and forming, and identify defects and applications of various manufacturing techniques. Reference books and online resources are also provided for each unit to aid student learning.
MILLING MACHINE PPT6: MILLING CUTTER NOMENCLATURE BY POLAYYA CHINTADA
This document defines the key parts and angles of a milling cutter. It describes the body of the cutter, periphery, cutting edge, fillet, face of teeth, back of tooth, land, bottom land, root diameter, and outer diameter. It then explains the lip angle, relief angle, radial rake angle, axial rake angle, and clearance angle - which are the critical angles that define the geometry of the cutting teeth and ensure efficient material removal during milling. The document provides the essential nomenclature and terminology for understanding milling cutter design and function.
MILLING MACHINE PPT 5: INDEING AND INDEING METHODS BY POLAYYA CHINTADA
Indexing is the process of evenly dividing a circular workpiece into spaced divisions. Indexing heads, also called dividing heads, contain an indexing mechanism to accurately control rotation of the spindle and divide the workpiece. There are three types of indexing heads: plain, universal, and optical. The optical head provides the most precision and can measure angles to the second. Indexing methods include simple indexing using a plain head where the plate mounts directly to the spindle, and ratio indexing where the head contains a worm and wheel driven by a crank to divide the workpiece into the desired number of sections.
MILLING MACHINE PPT 4: MILLING CUTTERS BY POLAYYA CHINTADA
This document discusses different types of milling cutters used in metal cutting and machine tools. It describes plain milling cutters, side milling cutters, half side milling cutters, staggered teeth milling cutters, interlocking teeth milling cutters, end milling cutters including common type and two lipped end milling cutters. It also discusses face milling cutters, metal slitting saw milling cutters, angle milling cutters, double angle milling cutters, T-slot milling cutters, wood ruff key milling cutters and various form milling cutters. The document was prepared by Polayya Chintada to discuss milling cutters used in
MILLING MACHINE PPT3: MILLING OPERATIONS
This document discusses different types of milling operations including plain milling, face milling, angular milling, form milling, straddle milling, gang milling, end milling, and keyway milling. It provides details on each operation such as the cutters used, surfaces produced, and applications. The document is authored by Polayya Chintada who is an Assistant Professor and discusses these milling operations for a course on Metal Cutting and Machine Tools.
MILLING MACHINE PPT 2: PARTS AND CLASSIFICATION OF MILLING MACHINES
The document discusses the parts, types, and classifications of milling machines. It describes the main components of milling machines including the base, column, knee, saddle, table, overhanging arm, front brace, spindle, and arbor. It classifies milling machines as column and knee type, fixed bed type, planner type, and production type. Within these classifications, it provides details about horizontal milling machines, vertical milling machines, universal milling machines, omniversal milling machines, simplex milling machines, and other specific types of milling machines such as drum milling machines and tracer controlled milling machines.
MILLING MACHINE PPT 1: WORKING PRINCIPLE ,MILLING METHODS AND SPECIFICATIONS ...
Milling machines are used to remove materials from a workpiece via a revolving cutting tool. There are two types of milling: up-milling and down-milling. Up-milling involves cutting against the workpiece movement, resulting in varying cutting forces. Down-milling cuts in the same direction as workpiece movement, generating less heat and allowing for a better surface finish. Milling machines can cut flat, curved, or angled surfaces using multiple tooth cutters mounted on an arbor or spindle. They are suitable for machining surfaces, contours, threads, and other cross-sections.
LATHE OPERATIONS PPT POLAYYA CHINTADA
This document discusses lathe operations and provides details on various operations like facing, turning, knurling, parting off, drilling, boring, thread cutting, and taper turning. It explains the basic principles and methods for each operation. The objective of the course is to help students understand different types of lathes, lathe operations, work holders, tool holders, lathe attachments, and automatic lathes. The outcome is for students to be able to use lathe machines and understand the importance of lathe tools and lathes. [/SUMMARY]
LATHE ACCESSORIES PPT BY POLAYYA CHINTADA
The document discusses lathe accessories used in metal cutting and machine tools. It describes chucks (3-jaw, 4-jaw, collet, magnetic, hydraulic), face plates, angle plates, driving plates, lathe dogs, follower rests, steady rests, and mandrels. The accessories are used to properly hold and support workpieces and tools. Chucks clamp workpieces, face plates hold irregular shapes, dogs rotate workpieces, and rests support tubes or long workpieces during turning. Mandrels mount hollow workpieces. The document provides details on the construction and use of various lathe accessories.
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- 25. Thank you …………………. Yours………….. polayya chintada…………………