HW1: Turning,Milling & Drilling Processes

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27 Terms

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Lathe Turning
A metal cutting process used for the generation of cylindrical surfaces. Normally the workspace is rotated on a spindle and the tool is fed into it radially, axially, or both ways simultaneously, to produce the desired surface
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Work holding methods
“Held in a chuck”

“Held in a collet”

“Held between Centers”
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Held in a chuck
When a workpiece is _________, it is clamped in a rotary chuck containing 3 or 4 jaws for security
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Held in a collet
When a workpiece is ______, it is held in precision cylindrical bushings
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Held between centers
When a workpiece is_______, it is supported between 2 pointed mandrels.

\-Used for long slender pieces
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True
T or F: All standard tool holders are designed to cut with the cutting edge or point located on the center line of the machine and workspace
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Name all of the Locations
Name all of the Locations
1-Headstock

2-Spindle

3-Ways

4-Tool Post

5-Cross Slide

6-Carriage

7-Bed

8-Tailstock
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Turret Lathe

Engine Lathe
Two Different Types of Lathe
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Turret Lathe
Represents First step towards high production turning machines

Replaces the tail stock and tool post compound assembly with tool-holding turrets

Includes “skill of the worker”, inexperienced workers can reproduce identical parts

Higher production needs
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Engine Lathe
Lower production needs

Skilled operator and requires time to produce identical parts
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Milling
A process of generating machined surfaces by progressively removing a predetermined amount of material or stock from the work piece which is advanced at a relatively slow rate of movement or feed to a milling cutter rotating at a comparatively high speed
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End Milling
The use of the end and periphery of the cutting tool to create a shoulder or pocket
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Face Milling
The use of the end or tip of the cutting tool to create a flat work piece surface
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High speed steel
From what material are most solid milling cutters and drills made?
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Vise
What is the most common type of work holding device for a milling machine?
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True
T or F: Drilling accounts for the majority of holes produced in industry today
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Name of the components of the drill
Name of the components of the drill
1-Shank Length

2-Flutes

3-Lip

4-Drill diameter
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Name of the components of the Mill
Name of the components of the Mill
1-Motor

2-Overarm

3-Column

4-Base

5-Knee

6-Sadde

7-Table

8-Spindle

9-Quill
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Facing
Surfaces are typically positioned perpendicular to the axis of the workpiece in the “___” operation.

\-Dominated by racial feed
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Knurling
In an operation known as “_____,” a regular cross-hatched pattern is produced in work surfaces through metal forming
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Turning
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 predominately axial with respect to the machine spindle.
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Chamfering
For a “_____” operation, a tool cuts the corner of a cylinder at an angle
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Threading
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
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Drilling
In the “_____” process, a hole is produced by feeding a drill into a rotating workpiece along its axis
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Boring
A single point tool is def linearly and parallel to the axis of a workpiece to enlarge a hole made by a previous process in the operation known as “_____”
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Parting
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
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Profiling
In a “______” operation, both modes of tool feed are simultaneously desired to create tapered and contoured surfaces