What is a Steering System ?
It is a Mechanism used to set an Automobile/Vehicle to the desired direction, at the convenience of the driver from his seat with a considerably less effort to negotiate any curve or obstacle in it’s path.
How a Steering Gear Assembly & Linkages Works ?
The Rotary Movement of the Steering Wheel is Transmitted as Angular movement of Road Wheels
The Flow of action of Steering System
STEERING GEAR
DROP ARM LINKAGES STEERING ARM VEHICLE FRONT WHEELS.
DRAGROD/TIEROD
TYPES OF STEERING SYSTEM
1. Re-circulating Ball type 2. Rack-Pinion Type 3. Worm & Roller
RML (Mysore) Product Line Steering Gear Products (SGP): - RE CIRCULATING BALL TYPE:
- HYDROSTATIC STEERING UNIT (HSU)
Steering Suspension Linkage Products (SSLP); - TIE ROD
- DRAG ROD - LOWER CONTROL ARMS - BALL JOINTS (Upper / Lower/Gear shifter))
RML Product Types Steering Gear Products: RE CIRCULATING BALL TYPE:
1. G3 - DB, Closed Fork Type. 2. G4- Floating.Sector Gear Type. 3. G6- DB,Sector Taper Gear Type.
Steering Suspension Linkage Products; 1. Metallic Joints Serviceable Non Serviceable 2. Non Metallic Joints Greaser less Sealed Joints SemiGreaser Joints Monolube Cup Design Joints.
G3 – Re-circulating Ball with Closed fork type Rockershaft.
G4 – Re-circulating Ball/floating Column with sector type Rockershaft.
G6- Racktype Re-circulating Ball Nut with Sector gear shaft
ASSEMBLY Components Produced at Different line are checked and assembled together in the Assembly Section. Types Of Assembly Lines
1. Single Station Assembly. 2. Synchronous Assembly. 3. Non-synchronous Assembly 4. Continuous Motion Assembly system. 5. Dial or rotary Assembly System.
Assembly Line Balancing depends on... 1. Time 2. Flow 3. No.of operators 4. No.of work stations.
ASSEMBLY TYPES OF ASSEMBLY 1.
Selective Assembly : Ex: Worm & Nut
2.
Non Selective Assembly: Ex: Box,Coverplate,Rockershaft,Bolts & Nuts.
The Process Flow in Steering Gear Assembly
Worm & Nut Assy.
Box Bearing Press & Oilseal Press ICMN & Bearing Preload R/Shaft Assy & Final Load Adjust Inspection & Leak Test
Important Check Points for Stg. Gear Assembly. Worm & Nut Play (Shake) Inner Column Preload Rockershaft Final Preload Number of Revolutions No Backlash at Center (SAP) Smooth rotation Droparm Movement. Other Cutomer Fitments
Some Defects in Stg. Gear Assy & Its Causes Stg. Rotation Not smooth Hard Stg. Gear: Gear Catch: Ball Stuck: Assembly Leakage:
Important Testing for Stg. Gear Assembly. 100 % Leak Checking. Endurance Testing Impact Testing Fatigue Test Spline Output test
Steering Ratio Ratio can be classified in two ways one by the Steering Torque and other By Steering Rotation. Rane Offers Two Types of Stg. Ratio Assemblies.. 20
1. Constant Ratio.
29.2
29.2
24.3
1. Variable Ratio
40
00 40 SAP
R/S