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6 Month 6 > TPC 327 Using Index Milling Procedures > Flashcards

TPC 327 Using Index Milling Procedures Flashcards

1
Q

A typical application for a dividing head is the milling of a

Chamfer
Gear
Small-radius shoulder
Tapered shaft

A

Gear

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2
Q

The index holes around the spindle of the dividing head are used in ______ indexing

Compound
Direct
Simple
Spindle

A

Direct

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3
Q

If a dividing head has 24 holes around its spindle nose and you must cut four equally spaced notches in a work piece, how far must you rotate the spindle between cut?

Five holes
Four holes
Seven holes
Six holes

A

Six holes

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4
Q

If a dividing head has a 40: 1 gear ratio, how many times must you turn the worm to move the spindle 1/4 of a complete revolution

4
10
20
40

A

10

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5
Q

How many crank turns are needed to index each of 12 equally spaced cuts on a workpiece? Use the formula: T =40/N.

2 3/4
3
3 1/3
3 2/3

A

3 1/3

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6
Q

Suppose indexing a workpiece requires 4 turns of the index crank. You will use a hole circle on the index plate with how many holes?

17
18
19
20

A

20

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7
Q

On a dividing head with a 40:1 gear ratio, one turn of the index crank moves the spindle how many degrees?

6
9
12
15

A

9

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8
Q

For simple angular indexing on a 40:1 dividing head, you can use an index plate circle with how many holes?

23
37
54
60

A

54

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9
Q

Compound indexing differs from simple indexing in that you

Disengage the worm and worm gear
Turn the crank in two different directions
Turn the index plate itself
Use two index plates

A

Turn the index plate itself

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10
Q

Differential indexing is similar to, but more accurate than,_______ indexing.

Angular
Compound
Direct
Simple

A

Compound

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11
Q

What makes a universal dividing head different from a plain dividing head?

It accepts all types of index plates
It can index by degrees as well as by inches
It is equipped with sector arms
Its spindle nose can be swung up 90°

A

It’s spindle nose can be swung up 90°

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12
Q

When you use a center in the dividing head spindle to hold a workpiece, you install the other center in the

Chuck
Footstock
Milling machine spindle
Vertical milling attachment

A

Footstock

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13
Q

When mounting work on the dividing head center, you assume a positive flow of power from the dividing head spindle to the workpiece by using a

Driver and milling machine dog
Faceplate and clamps
Faster transverse feed
Slower transverse feed

A

Driver and milling machine Dog

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14
Q

When using a chuck to hold a workpiece on the dividing head, you can give the workpiece extra support with a

Driver
Milling machine dog
Spindle center
Steady rest

A

Steady rest

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15
Q

If you straddle mill a hexagonal workpiece, how many times must you position the work?

One
Two
Three
Six

A

Three

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16
Q

Why should you insert a cap into the opening of the dividing heads spindle?

To cut down on friction
To hold lubricant for the spindle
To hold the dividing head chuck
To keep chips out of the spindle

A

To keep chips out of the spindle

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17
Q

When using the direct indexing method, you should NOT

Count the zero hole
Disengage the worm and worm gear inside the dividing head
Insert the plunger Pin in one of the holes around the spindle nose
rotate the spindle nose

A

Count the zero hole

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18
Q

To use the plain indexing method, the worm and worm gearing in the dividing head must be

Disengaged
Engaged
Removed
Replaced

A

Engaged

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19
Q

When plain milling, which side of a hexagonal workpiece should you mill after taking the first cut?

The adjacent side facing the column
The adjacent side away from the column
The opposite side
You must straddle me hexagonal work pieces

A

The opposite side

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20
Q

The dividing head is useful for drilling holes

In a circle
And a straight line
And difficult to reach places
And work that must be held in a chuck

A

In a circle

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21
Q

Cutting the teeth in a spur gear is a type of ______ milling

Angle
Form
Index
Spur

A

Form

22
Q

To mill spur gears, you should use______ cutters

Plain milling
Special profile
To half-side milling
Two single-side milling

A

Special profile

23
Q

Compute the outside diameter of a 30 – tooth spur gear blank with a diametral pitch of six. Use the following formula.

O.D.= N+2
——
DP

5.333 in.
6in.
7.333 in.
30in.

A

5.333 in.

24
Q

Which of the following factors does NOT affect cutter selection for milling spur gears?

Diametetral pitch
Gear blank material
The number of teeth
Whole tooth depth

A

Whole tooth depth

25
Q

Series of eight cutters each have been developed to cut gears with different numbers of teeth that have the same

Diametral pitch
Gear size
Pressure angle
Tooth depth

A

Diametral pitch

26
Q

To index the teeth of a large diameter gear, use a

Gear tooth vernier caliper
Rotary table
Style B Arbor
Universal dividing head

A

Rotary table

27
Q

When measuring a newly cut gear over pins, you should use a

Dial indicator
Gear tooth vernier caliper
Micrometer
Steel rule

A

Micrometer

28
Q

To check spur gear tooth thickness at the pitch circle, use a

Dial indicator
Gear tooth vernier caliper
Micrometer
Steel rule

A

Gear tooth Vernier caliper

29
Q

The distance between adjacent helices that are wound on a common cylinder is called the

Helix angle
Helix lead
Helix pitch
Pitch angle

A

Helix pitch

30
Q

The lead of a helix is determined by the

Cutter used
Dividing head gear ratio
Dividing head lead
Milling machine lead

A

Milling machine lead

31
Q

To mill a helix, you must change gears to link the lead screw of the milling machine with the

Automatic transverse feed
Driving head worm shaft
Vertical feed
Vertical milling attachment

A

Dividing head worm shaft

32
Q

If the ratio of change gearing is 1:1 and the lead of the milling machine is 10 in., a helix milling would have a lead of

1.1 in.
1 in.
10 in.
100 in.

A

10 in.

33
Q

How many change gears usually make up a set?

Two
Three
Four
Six

A

Four

34
Q

In the change gear formula 40/40×24/60, how many teeth will the two driving gears each have?

24 and 60
40 and 24
40 and 40
40 and 60

A

40 and 24

35
Q

In order to reverse the direction of gear rotation so that you can mill either a right or left-handed helix use a(n)

Change gear set
Idler gear
Reverse gear
Reverse installation chuck

A

Idler gear

36
Q

When using simple angular indexing mill 15 teeth into a cylindrical workpiece, how far apart must use space each tooth?

9°
15°
24°
36°

A

24°

37
Q

In order to obtain the proper helix angle when milling a helical workpiece, you must swivel the

Dividing head spindle
Footstock
Machine table
Vertical milling attachment

A

Machine table

38
Q

Which of the following factors is NOT important for you to know about the helical gear you are milling?

Helix angle
Normal diametral pitch of gear
Number of teeth
Where it will be used

A

Where it will be used

39
Q

When milling helical gear teeth, you should NOT draw the cutter back through the work after a cut is complete because

It will cause tolerance stack up
The indexing will be thrown off
You could damage the gear tooth surface
You could damage the cutter

A

You could damage the gear tooth surface

40
Q

The tooth dimensions of spur gears are described by circular pitch. What measurement do you use to describe helical gear teeth?

Helix angle
Helix lead
Normal diametral pitch
Working depth pitch

A

Normal diametral pitch

41
Q

What function does a cam perform?

They change the direction of motion of machine parts
They extend gear life
They reduce the amount of energy used
They smooth irregular functioning

A

They change the direction of motion of machine parts

42
Q

The follower and a nonpositive cam system would NOT be controlled by

A groove in the cam
A spring
An external force
Gravity

A

A groove in the cam

43
Q

The distance that one cam lobe moves the follower from its starting point as the cam rotates is the

Cam lead
Cam lobe
Cam rise
Uniform rise

A

Cam rise

44
Q

The total distance that a lobe on a uniform–rise cam would move the follower if the lobe extended a full 360° is the

Cam lead
Cam rise
Lobe rise
Uniform rise

A

Cam lead

45
Q

When milling a plate cam, you need a dividing head and a

Dial indicator
Footstock and mandrel
Style B Arbor
Vertical milling attachment

A

Vertical milling attachment

46
Q

When milling plate cams, the dividing head spindle and the cutter CANNOT be

At any angle, other than horizontal
In the horizontal plane
In the same plane
Parallel

A

In the horizontal plane

47
Q

When milling a uniform–rise cam with a short lead, the angle at which you set the vertical milling attachment determines the correct setting for the

Cutter speed
Dividing head spindle
Footstock
Machine table feed

A

Dividing head spindle

48
Q

On which side of the workpiece do you position the cutter when miling a short-lead cam?

Left
Lower
Right
Upper

A

Lower

49
Q

If one lobe of uniform–rise cam covers 120° of the circumference and has a rise of 0.25 in., What is the cam lead?

0.25 in.
0.50 in.
0.75 in.
1.00 in.

A

0.75in.

50
Q

When milling nonuniform–rise cams, you should use

A footstock
Change gearing with an idler gear
Profile milling cutters
The incremental-cut method

A

The incremental-cut method

6 Month 6 (8 decks)

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