This document discusses transfer devices and feeders used in mass production. It describes transfer systems that move workpieces between machining stations, including linear mechanisms like conveyors and rotary indexing tables. Transfer devices outlined include inline and rotary configurations. Feeders are also discussed, which control the rate of material flow from bins to equipment, differing from conveyors in modulating flow rate. Common part feeding devices to move individual pieces are also listed.

1. TRANSFER DEVICES
AND FEEDERS

2. CONTENT
 Introduction
 Need of transfer devices and feeders
 Transfer system
 Transfer mechanism
 Types of transfer devices
 Feeder
 Types of feeders
 Part feeding devices

3. INTRODUCTION
 The aim of production engineer is to increase the output
particularly in mass production . This technique of transfer
device has been introduce to achieve same motive .
 The transfer devices are often the most suitable method for
continuous flow of identical or view similar component in the
mass production of consumer goods.

4. NEED OF TRANSFER DEVICES
 High product demand
 Better assembly process for mass production
 Less time required for production

5. TRANSFER SYSTEM
 These are special purpose system where the component are
transferred automatically from one machining head to another
machining head.
 For example CNC rotary transfer machine.
 Types of transfer system
 Continuous transfer system
 Synchronous transfer system
 Asynchronous transfer system
 Stationary transfer system

6. TRANSFER MECHANISM
 Transfer mechanism are used to move the work
piece from one station to another station in the
machine or from one machine to another –to enable
various operations to be performed on the part.
 For examples
 rails
 Rotary indexing tables
 Overhead conveyors

7. TYPES OF TRANSFER MECHANISM
 Liner transfer mechanism
 Walking beam mechanism
 Powered rollers
 Chain drive conveyor system
 Rotary transfer mechanism
 Rack and pinion
 Ratchet and pawl
 Geneva mechanism

8. WALKING BEAM
SYSTEM

9. POWERED ROLLER
CONVEYOR SYSTEM

10. CHAIN DRIVE
CONVEYOR SYSTEM

11. RATCHET AND PAWL
MECHANISM

12. GENEVA MECHANISM

13. TYPES OF TRANSFER DEVICES
 Inline transfer devices
 The in-line configuration assembly system consists of
a sequence of workstations in a more-or-less straight-
line arrangement .
 The in-line assembly machine consists of a series of
automatic workstations located along an in-line
transfer system. It is the automated version of the
manual assembly line.
 Continuous, synchronous, or asynchronous transfer
systems can be used with the in-line configuration.

14. ROTARY INDEXING TABLE TRANSFER DEVICE
 the base part are indexed around a circular table or
dial.
 The workstations are stationary and usually located
around the outside periphery of the dial.
 The parts ride on the rotating table and arc
registered or positioned, in turn, at each station a
new component is added to base part.

15. ROTARY INDEXING TABLE TRANSFER DEVICE

16. TRANSFER DEVICES USED IN TRANSFER
MACHINE
 Roller conveyor
 Wheel conveyor
 Chute conveyor
 Belt conveyor
 Chain conveyor
 Magnetic belt conveyor
 Bucket conveyor

17. FEEDERS
 A feeder is the means by which the rate of solid
flow from a hopper or bin is controlled .
 Feeder feed material to conveyors, processors and
other equipment at a controlled rate to maximize
the efficiency and production.
 Feeders differ from conveyors in that the latter are
only capable of transporting material not modulating
the rate of flow.
 Dischargers are also not feeder

18. PART FEEDING DEVICES
 Hopper
 Chutes
 Magazines
 Separators
 Part feeder
 Feed truck
 Escapement and placement devices
 Bowls
 Cradle
 reel