SHAPER 23/06/2025

In which stroke of the Quick Return Motion Mechanism (QRMM) does the cutting take place?

• Forward stroke
• Return stroke
• Both strokes
• None of the above

Answer explanation

Cutting occurs in the forward stroke, while the return stroke is idle.

Which of the following is another name for the Quick Return Motion Mechanism?

• Bell Crank Mechanism
• Withworth Quick Return Mechanism
• Clapper Mechanism
• Cross Rail Mechanism

Answer explanation

The Quick Return Mechanism is also called the Withworth Quick Return Mechanism.

What is the main purpose of the base in a shaper?

• For reciprocating movement
• For housing the motor
• For supporting the machine tool
• For holding the cutting tool

Answer explanation

The base supports the machine and resists vibrations.

The driving mechanism of a shaper is housed in which part?

• Ram
• Column
• Cross rail
• Table

Answer explanation

The driving mechanism is housed inside the column.

Which component is responsible for giving vertical movement to the table in a shaper?

• Ram
• Cross rail
• Elevating screw
• Tool slide

Answer explanation

The elevating screw moves the table up and down.

The clapper box in a shaper is designed to:

• Hold the tool rigidly in both strokes
• Swing outward during return stroke
• Provide angular feed
• Control cross feed

Answer explanation

The clapper box swings outward during the return stroke to prevent rubbing.

The ram of a shaper is primarily used for:

• Supporting the table
• Providing the tool feed
• Reciprocating the tool
• Elevating the cross rail

Answer explanation

The ram reciprocates and holds the tool at its front end.

The tool slide in a shaper allows:

• Angular cutting
• Cross movement of saddle
• Tool clamping
• Table elevation

Answer explanation

The tool slide has graduated scales and allows for angular cutting.

Which part of the shaper holds the workpiece?

• Tool head assembly
• Table
• Cross rail
• Ram

Answer explanation

The table, equipped with T-slots, is used to hold and clamp the workpiece.

The bell crank in a shaper is used for:

• Moving the cross rail
• Raising or lowering the tool slide
• Swinging the clapper box
• Providing the quick return stroke

Answer explanation

The bell crank is used to adjust the vertical position of the tool slide.