Work holding device for shaper, planer and milling machines

TABLE OF CONTENTS

1. What is work holding device?

2. various types of work holding devices

2.1 Clamping in a vice

2.2 Clamping directly on table using T Bolts

2.3 Clamping on an angle plate

2.4 Clamping over a V-Block

2.5 Fixture

1. What is work holding devices?

It is a devices which is used to hold, locate and support the work piece. The various work holding devices are available. They are used in lathe, milling machines, shaper and planer etc.,

Here you may learn about the various work holding devices used in conventional lathe machines like shaper and planer. 

2. Various types of work holding devices

The various work holding devices are used in shper, planer and milling machines during the manufacturing processes

• Clamping in a vice
• Clamping directly on table using T Bolts
• Clamping on an angle plate
• Clamping over a V-Block
• Fixture

2.1 Clamping in vice:

 

• The vice is fitted on the table by means of T-bolts and nuts. 
• The work piece is held in between the fixed and movable jaw.
• The work piece is clamped by tightening the screw. 
• A graduated swivel base is provided in the bottom. 
• The body of the vice can be swivelled to required angle.
• Vice is used to hold regular shaped work pieces quickly and easily

2.2 Clamping directly on the table - Using T-bolt and strap clamp

• T-bolts are inserted in to the T-slot on the table. 
• Nuts are used to tight the work piece on the table.

• A strap clamp with a hole at its centre is inserted in to the bolt. 
• One end of the clamp is made to rest on the Work piece and another end is on the step block. 
• The work piece is clamped by tightening a nut on the bolt. 
• Two or more T-bolt and clamps are used for clamping large work pieces.

2.3 Clamping on a Angle plate

 

• This method is used for holding irregular shaped work pieces having holes. 
• Workpiece is bolted to the vertical face of the angle plate by using bolts and nuts. 
• Packing strips may be used for supporting the work piece at the bottom.

2.4 Clamping on a V Block

• V’ block is suitable for holding small cylindrical work pieces.
•  The work pieces are held on the ‘V’ block and ‘V’ clamp is placed over it. 
• The clamp is tightened by T-bolts and nuts for clamping the work piece firmly.

2.5 Fixture
 

• Fixture is a device used for clamping the work pieces easily and quickly. This reduces the setting time. As the work piece is exactly located, the machining can be done accurately. 
• The productivity is considerably increased by using fixture in mass production.