EML2322L - Homework 1 Review

In the "_______" process, a hole is produced by feeding a drill into a rotating workpiece along its axis.

Drilling

The use of the end and periphery (or side) of the cutting tool to create a shoulder or pocket. The use of the end or tip of the cutting tool to create a flat workpiece surface.

End Milling Face Milling

Identify the components of a mill (refer to saved image).

1 - Motor 2 - Overarm 3 - Column 4 - Base 5 - Knee 6 - Saddle 7 - Table 8 - Spindle 9 - Quill

Identify the components of a straight shank twist drill (refer to saved image).

1 - Shank Length 2 - Flutes 3 - Lip 4 - Drill Diameter

In an operation known as "________," a regular cross-hatched pattern is produced in work surfaces through metal forming.

Knurling

TRUE or FALSE: All standard tool holders are designed to cut with the cutting edge or point located on the centerline of the machine and workpiece.

TRUE

TRUE or FALSE: Drilling accounts for the majority of holes produced in industry today.

TRUE

During a "______" operation, external or internal threads are achieved by feeding a pointed tool linearly across the outside or inside surface of a rotating part.

Threading

The generation of any cylindrical surface with a single point tool is referred to as "______." In this operation, the direction of the feeding motion is predominantly axial with respect to the machine spindle.

Turning

A variety of work holding methods may be used for machining on a lathe. When a workpiece is _________ , it is clamped in a rotary chuck containing 3 or 4 jaws for security. When a workpiece is _________ , it is held in precision cylindrical bushings. When a workpiece is _________ , it is supported between 2 pointed mandrels. This last work holding method is most often used for long, slender workpieces.

held in a chuck held in a collet held between centers

A single point tool is fed linearly and parallel to the axis of a workpiece to enlarge a hole made by a previous process in the operation known as "_______."

Boring

Name 8 parts of a lathe (refer to saved image).

1 - Headstock 2 - Spindle 3 - Ways 4 - Tool Post 5 - Cross Slide 6 - Carriage 7 - Bed 8 - Tailstock

Choose the best definition for the term "milling": A) A process of generating machined surfaces by progressively removing a predetermined amount of material or stock from the workpiece which is advanced at a relatively high rate of movement or feed to a milling cutter rotating at a comparatively slow speed. B) A process of generating machined surfaced by progressively removing a predetermined amount of material or stock from the workpiece which is advanced at a relatively slow rate of movement or feed to a milling cutter rotating at a similarly slow speed. C) A process of generating machined surfaced by progressively removing a predetermined amount of material or stock from the workpiece which is advanced at a relatively slow rate of movement or feed to a milling cutter rotating at a comparatively high speed. D) A process of generating machined surfaced by progressively removing a predetermined amount of material or stock from the workpiece which is advanced at a relatively high rate of movement or feed to a milling cutter rotating at a similarly high speed.

C) A process of generating machined surfaced by progressively removing a predetermined amount of material or stock from the workpiece which is advanced at a relatively slow rate of movement or feed to a milling cutter rotating at a comparatively high speed.

For a "_____" operation, a tool cuts the corner of a cylinder at an angle.

Chamfering

Surfaces are typically positioned perpendicular to the axis of the workpiece in the "______" operation. This operation is dominated by radial feed.

Facing

From what material are most solid milling cutters and drills made? Hint: its acronym is HSS. Make sure you include the entire name and spell it correctly. For reference, higher quality and higher productivity cutting inserts and drills are typically made from tungsten carbide, which being similar to ceramic, can withstand more heat, but is more brittle, and more expensive. HSS is still widely used because of its toughness and cost.

High Speed Steel

Which term best matches the following definition? "A metal cutting process used for the generation of cylindrical surfaces. Normally the workpiece is rotated on a spindle and the tool is fed into it radially, axially, or both ways simultaneously, to produce the desired surface. The term, in the general sense, refers to the generation of any cylindrical surface with a single point tool."

Lathe Turning

For a "______" operation, the end of a part is cut off by feeding a tool radially into a rotating workpiece at a particular location along its length.

Parting

In a "______" operation, both modes of tool feed are simultaneously desired to created tapered and contoured surfaces.

Profiling

This lathe type represents the first step toward high production turning machines. This lathe type replaces the tailstock and tool post compound assembly with tool-holding turrets. This machine is better for lower production needs. This machine includes the "skill of the worker" within itself, so inexperienced operators can reproduce identical parts. This machine requires a skilled operator and requires more time to produce identical parts. This machine type is more ideal for higher production needs. turret lathe

Turret Lathe Turret Lathe Engine Lathe Turret Lathe Engine Lathe Turret Lathe

What is the most common type of workholding device for a milling machine? Hint: watch your spelling!

Vise