A brief description all major Slotting Machines based on Industrial usage

1. DEPARTMENT OF MECHANICAL ENGINEERING
INDIAN SCHOOL OF MINES DHANBAD
SEMINAR ON SLOTTING MACHINE
Presented By
Mr. AVINASH JURIANI
M.tech-Manufacturing
14MT000354

2. SLOTTING MACHINE
Basic features
• Vertical shaping machine where the
single point tool reciprocates
vertically
• Cutting on the downward stroke &
upward stroke being idle
• Work table specified for transverse,
longitudnal or rotary movement
• Longer stroke length
• Wide range of operations for internal
surfaces as splines, keyways & teeth

3. SPECIFICATIONS OF SLOTTER
• Max. length of Ram Stroke
• Diameter of work table in mm.
• Type of Drive
• Maximum table travel.
• Power input
• Floor Space required
• Amount of longitudinal travel in mm
• No. of speeds available
• No. of feeds available
• Table feed

4. PRINCIPAL PARTS OF SLOTTER
• Base
• Bottom most part
• Made of Cast Iron
• Column
• Vertically mounted on the base
• Has guide ways on which Ram slides
• Ram
• Reciprocating vertically up and down
• It carries Tool Head /cutting tool
• Tool Post
• It is attached to bottom end of ram
• Carries Tool post on it
• Table
• A circular casting with T-slots on its top
• Movement of table can be linear or rot
• Saddle
• It is mounted on guide ways of bed
• Using saddle longitudinal feed is given
• Cross slide
• Circular work-table is mounted on top.
• Using cross slide cross feed is given

5. KINEMATICS OF SLOTTER
Steps
• Vertical slide reciprocated by
crank-connecting rod mechanism
• Quick return absent
• Intermittent rotation provided by
four bar linkage
• The work table rotated by feed
rod connected to worm-worm
wheel drive
• Working speed(number of
strokes per minute) can be
changed by belt pulley ratio/gear
box

6. TYPES OF SLOTTER
PRECISION TOOL ROOM SLOTTER
Features
High speed operation
Precise work in tool rooms
Butler Precision Toolroom Slotter, 12" Capacity,
Table Size: 24" Diameter, 19 - 75 Cycles per min

7. PUNCHER SLOTTER PRODUCTION SLOTTER
Features
• Machining Heavier jobs
produced by forging or stamping
Features
• Machining tapered jobs by ram
swivel to 10-30 degrees

8. KEYSEATER
Features
• Special purpose slotter
• Cuts keyways in gears, pulleys, cams, etc.

9. SLOTTER DRIVES
 HYDRAULIC DRIVE
Features
• Greater speed flexibility
• Smoother operation
• Stroke length can be adjusted
 VARIBLE SPEED MOTOR DRIVE
Features
• Multi Speed Arrangement

10. SLOTTED DISC MECHANISM
Features
• Slotted disc rotated by pinion & gear drive
• Electric motor used
• Stroke length can be adjusted by varing pin eccentricity

11. SPECIALSLOTTERS
• Eccentric
slotter for
cardboards
• Heavy
duty gear
slotter
• Pipe slotter

12. SLOTTER TOOLS
• Forged from solid tool steel bar, or
• In the form of tool bit held in the tool holder.
• Fig. shows square shank tool

13. GLIMPSE OF SLOTTING MACHINES

14. SLOTTING APPLICATIONS
• Internal recess of circular,
concave & convex surfaces
• To cut slots, splines, keyways
both internal external
• To machine internal &
external gears
• Internal machining of blind
holes

15. ORIENTATION OF CUTTING PLANES IN
SLOTTING ACTION
• The cutting plane is perpendicular to the reference plane
• It is tangent to the velocity vector
• It is tangent at every point of cutting edge

16. KEYSEATER USING PRECISION SLOTTER
Steps
• Check machine working in idle run
• Clamp work piece in vice of rotary table
• Run, after slot cut rotate table as required
• Unmount & check
Image Courtesy Daljit Machine tools ludhiana

17. SCREW SLOT USING VIBRATING BOWL SLOTTER
Steps
• Screws placed on rotating bowl
• Screw aligner send screws to rotary aligner
• Rotary aligner feeds screw to Slot cutter

19. REFERENCES
• https://engineering.myindialist.com/
• https://slottingmachineindia .com/
• General purpose machines module 2 IIT kharagpur
• A textbook of production technology by p.c. sharma
s.chand publications
• ITC shaper book USA