Sheet Metal Industry Tool & DIE Maker Interview Questions and Answers

There are two main types of ejection molding: ejector pin and ejector sleeve.

• Ejector pin ejection molding involves using pins to push the molded part out of the mold.

• Ejector sleeve ejection molding involves using sleeves to push the molded part out of the mold.

• Other types may include stripper plate ejection and air ejection.

• Each type of ejection molding has its own advantages and disadvantages.

A tool and die maker is responsible for creating and maintaining precision tools and dies used in manufacturing.

• Design and build precision tools and dies for use in manufacturing processes

• Operate and maintain various machines and equipment used in tool and die making

• Read and interpret blueprints and technical drawings

• Use computer-aided design (CAD) software to create and modify designs

• Troubleshoot and repair tools and

A tool room is a dedicated space where tools are designed, manufactured, repaired, and maintained.

• Tool rooms are typically found in manufacturing facilities.

• They are equipped with specialized machinery and equipment for tool making and maintenance.

• Tool rooms are responsible for ensuring that all tools are in good working condition and meet quality standards.

• They may also be responsible for managing inventory and orderi...read more

Cutting clearance formula is used to determine the amount of space required between the cutting tool and the workpiece.

• The formula takes into account the tool diameter, feed rate, and material being cut.

• The cutting clearance is important to prevent the tool from rubbing against the workpiece and causing damage.

• The formula is: Cutting Clearance = (Tool Diameter x Feed Rate) / (2 x Material Hardness)

• For example, if the t...read more

A piloting punch is used to create a small indentation or pilot hole in a workpiece before drilling or punching.

• Helps to accurately locate the center of the hole to be drilled or punched

• Prevents the drill or punch from slipping or wandering

• Reduces the force required to make the hole

• Commonly used in metalworking and woodworking

• Available in different sizes and shapes depending on the application

A press tool is a specialized tool used in manufacturing to shape or cut materials using a press machine.

• Press tools are used in industries like automotive, aerospace, and electronics for mass production of parts.

• They are designed to withstand high pressure and force to shape materials like metal sheets or plastics.

• Press tools can include dies, punches, and other components to create specific shapes or cuts.

• Examples of...read more

Compound tool is used for multiple operations on a single workpiece, while blanking tool is used to cut the workpiece to a specific shape.

• Compound tool performs multiple operations like cutting, bending, and forming on a single workpiece.

• Blanking tool is specifically used to cut the workpiece to a desired shape or size.

• Compound tool is more versatile and can be used for various tasks, while blanking tool is more specia...read more

Dowels are used in press tools to ensure accurate alignment and positioning of components during the manufacturing process.

• Dowels help maintain precise alignment between the upper and lower halves of the press tool.

• They prevent any misalignment that could lead to defects in the final product.

• Dowels also aid in quick and efficient assembly and disassembly of the press tool for maintenance or adjustments.

• Examples: Dowel ...read more

Hot runner and cold runner are two different types of systems used in injection molding.

• Hot runner system keeps the plastic material in a molten state throughout the molding process, while cold runner system allows the material to solidify in the runner channels.

• Hot runner system eliminates the need for runners to be ejected and reduces waste material, while cold runner system generates waste material in the form of so...read more

Hot runner systems keep the plastic in a molten state while cold runner systems allow the plastic to solidify between the mold cavities.

• Hot runner systems are more expensive but reduce waste and cycle time.

• Cold runner systems are cheaper but produce more waste and require longer cycle times.

• Hot runner systems are used for high volume production while cold runner systems are used for low volume production.

• Hot runner sys...read more

Preventive maintenance is a proactive approach to maintenance that involves regularly scheduled inspections and repairs to prevent equipment breakdowns.

• Preventive maintenance involves regularly scheduled inspections and repairs

• It is a proactive approach to maintenance that aims to prevent equipment breakdowns

• It can include tasks such as lubrication, cleaning, and replacing worn parts

• Examples of preventive maintenance i...read more

There are three types of maintenance: corrective, preventive, and predictive.

• Corrective maintenance involves fixing a problem after it has occurred.

• Preventive maintenance involves regular maintenance to prevent problems from occurring.

• Predictive maintenance involves using data to predict when maintenance will be needed.

• Examples of corrective maintenance include replacing a broken part or fixing a malfunctioning machine...read more

Tolerance is the allowable variation in a dimension or property of a part or product.

• Tolerance is the difference between the maximum and minimum limits of a dimension or property.

• It is important in manufacturing to ensure parts fit together properly.

• There are two types of tolerance: unilateral and bilateral.

• Unilateral tolerance allows for variation in only one direction, while bilateral tolerance allows for variation i...read more