Lecture 6 Sewing Machine Beds …

Sewing Machine Beds … There are different type of sewing machine beds. The purpose of designing different type of beds is just to allow the easy movement of the components being sewn. An inappropriate bed makes the operator’s work more tedious and time consuming.

Types of sewing machine beds …. There are four basic types of sewing machine beds Flat bed Cylinder bed Feed of the arm bed Post bed

Machine tables…. There may be a difference with the mounting of machine with machine table. This is commonly used in over edging machines. The purpose is just to provide the operator correct and proper work area. There are two possibilities Raised Mounting Submerged Mounting

Sewing Machine Beds … Flat Bed Cylinder bed Flat bed is the most commonly used sewing machine bed. Cylinder bed The shape of this bed allows the easy rotation of tubular parts like cuffs

Sewing Machine Beds … Post Bed Feed of the Arm Bed It has relatively small sewing area. Feed of the Arm Bed This is typically used for closing the cylindrical parts. i.e. Trousers out seam after inseam has been sewn

Balancing… Order Quantity = 30000 SMV = 10 Shift Time = 480 Lead Time = 10 days Plant Utilization = 80 % Attendance = 90 % Average performance of operators = 90 %

Labor required Total minutes required = 30000*10 Daily required output = 300000/10 SM Hourly required output = 30000/8 SM = 3750 SM Output required per min = 3750/60 = 62.5 SM Labor Required = 62.5 /80% * 90% * 90%

Labor required 62.5 * 100 * 100 * 100 = ----------------------------- 80 * 90 * 90 = 96.45 = 97 People