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Details

Tool and WorkHolding Devices
Machnist Apprenticeship 2- Manual Theory
24
Other
Not Applicable
11/23/2019

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Cards

Term
Types Of Tool Holders?
Definition
Collet Chuck
Arbour
Adapters
Term
How is a cutter held into place on an arbour?
Definition
By a number of spacing Collars
Term
Purpose of a bearing collar on an arbour?
Definition
Provide support to bar.
Term
Purpose of a drawbar?
Definition
hold arbours and toolholders in place.
Term
Main difference between style A and B arbours
Definition
Style A has a bearing support(pilot) at the arbours outer end. For light duty machining. B Style has 2 bearing collars along length of arbour.
Term
An example of an arbour designation is:
5 11/2 B 24-4
What do these numbers and letter represent?
Definition
5: #50 Milling Machine Taper
11/2: Diameter of arbour
B: Style of arbour
24: Useable length
4: size of bearing(equals 2-1/8 in this case)
Term
Collet styles?
Definition
Friction(Spring)
Heavy Duty
R8 Collet chucks
Term
Parts of a friction collet?
Definition
Chuck Body
Collet Nut
Collet
Term
What is the process of installing a heavy duty collet?
Definition
Place collet in lock sleeve, turn lock sleeve till it locks then back off 1/8 to 1/4 turn. Then install tooling and tighten lock sleeve.
Term
Purpose of an adapter?
Definition
Mate shank of tool to spindle of mill.
Term
Types of Adapters?
Definition
Endmill, jakobs taper and morse taper adapters.
Term
What are important details to remember when attaching tooling directly to spindle nose
Definition
-Cap screws must bottom out against counter-bore in tooling.
-Drive keys must not bottom out against tooling.
Term
Work Holding device mandatory criteria?
Definition
-Easy Setup
-Rigid
-Grip securely without damaging part
-allow proper coolant flow
Term
3 Types of vises for milling machines?
Definition
-Plain
-Swivel
-Universal
Term
How much can a universal vise swivel in horizontal and vertical plane?
Definition
-Horizontal:360 Degrees
-Vertical:0-90 Degrees.
Term
Basic parts of fixture?
Definition
Base plate and Nesting area
Term
Types of mandrels
Definition
-Solid
-Cone
-Threaded
-Expansion
-Gang
Term
Types of clamps
Definition
-Straight
-Bent tail/Gooseneck
-U-Clamp
-Finger Clamp
-Universal
Term
Where should a t-bolt or stud be positioned when clamping a part?
Definition
Near the work piece to max clamping pressure
Term
What is another purpose of shims other than protecting workpiece?
Definition
-Distribute Clamping Load
-Used as Packing when supporting W/P
Term
What is the strongest type of angle plate?
Definition
Ribbed(Ribs augment rigidity).
Term
How accurately can a tilting table be set to?
Definition
to a 1/2 of a degree.
Term
What kind of stock cant be held in a V-Block?
Definition
Hex stock.
Term
When does a sine bar and table lose accuracy?
Definition
When set to more than 60 degrees.
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