NEW Machinist 3 > Chapter 2 > Flashcards

Chapter 2 Flashcards

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1
Q

__ are used to assign program zero

A

Geometry offsets

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2
Q

__ offsets are used to make sizing adjustments during production run and possibly during set up.

A

Wear offsets

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3
Q

__ offsets are used for finishing tools to specify cutting tool type and size of its radius

A

Tool nose radius compensation offset

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4
Q

2 manual functions modes to move turret in any axis

A

Jog mode - for roughing

Hand wheel- for precision

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5
Q

What is X100, X10 and X1 in hand wheel mode?

A

X100 = .01
X10 = .001
X1 = .0001

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6
Q

Some, mostly older methods related to cutting tool measurements require that you manually send the machine to its zero return position in each axis, what is this called?

A

Zero return mode

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7
Q

If your turning centers does not have manual functions to control the spindle, you must use MDI and provide appropriate spindle activation commands, t or f?

A

True

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8
Q

What abbreviation do you use when you touch off a tool on a lathe. Sample for X axis

A

MX

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9
Q

What 3 displays position displays can you see on the Position Display screen pages

A

-absolute position

-machine position

-relative position

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10
Q

Out of the 3 position displays, which one do you do most of your in machine measurements ?

A

Relative position display

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11
Q

Setting your Z axis as your workshift zero helps you eliminate setting up program zero for thr next job by setting it on a set part of your machine eg chuck face, t or f?

A

True

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12
Q

A __ probe facilitates the task of programming zero assignment. When properly calibrated, it simplifies the task of determining and entering program zero assignment values

A

Tool touch off

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13
Q

A __ is defined as a quantity having magnitude and direction

A

Vector

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14
Q

G code to enter geometry offset values manually

A

G10

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15
Q

3 different types of tool holders on a lathe

A

-turning or facing toolholdees

-face profile holders

-drill and boring bar holders

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16
Q
A
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17
Q

The master reference tool should be a finishing tool and remains in the turret from job to job, t or f?

A

True

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18
Q

A tool touch off probe may also be called these 3 things

A

-qualified tool setter

  • tool probe

-tool eye

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19
Q

2 ways to swing the tool touch off probe into position

A

Mdi and a button made for tool touch off

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20
Q

What are the 4 calibration values on a tool touch off probe?

A

A - top x+
B- bottom x-
C- right z+
D- left z-

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21
Q

A turning centers having but 2 axis is limited to doing only __

A

Lathe work

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22
Q

A __ machine can additionally perform machining operations commonly associated with conventional milling and drill presses

A

Mill/turn machine

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23
Q

Rotating tools for turning centers are commonly called ?

A

Live tools

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24
Q

A mill/turn machine has at least one additional axis, a rotary axis called __ axis

A

C axis

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25
2 main spindle modes on mll/turn machines
Lathe mode and live tooling mode
26
What are the M codes for live tooling mode and lathe mode?
M154- live tooling mode M155 lathe mode
27
What are the 2 types of live tooling tool holders on a mill/turn machine?
Points towards Zaxis = end face work Points towards x axis = diameter work
28
3 axis mill/turn machines are limited to live tooling ops that are aligned with the main spindle center, they cannot machine attributes that are off center, t or f?
True
29
On a mill/turn machine, __ axis is required for off center live tooling operations
Y AXIS
30
What feed G code mode to use when doing live tooling?
G97 rpm mode
31
This G and H code sends C axis to its zero return position. You should specify this command after selecting love tooling mode with m154 to rotate c axis to its origin
G28 H0
32
What is M133, M134 and M135 for live tooling
M133- activate live tooling spindle in forward direction. Use for right hand cutting tools M134- reverse spindle position. For left hand cutting tools M135- turn off live tooling spindle
33
P word, m14 and m15 for love tooling
P- speed selection. Eg P1000 instead of S1000 M14- clamp main spindle/chuck M15- unclamp main spindle
34
G97, F word and G97 for live tooling
G98 - per minute feed rate mode F- feed rate. IPM for linear. Degrees per minute for motions involving C axis. No G99 in live tooling node G97- rpm mode
35
C axis zero origin is also called ?
C axis zero side
36
Does the C axis have polarity?
Yes. Positive for CW and negative for CCW
37
Word for absolute and incremental on c axis
C for absolute H for incremental
38
Unlike any linear axis, the C axis has no over travel limit. It can keep rotating indefinitely, t or f?
True
39
If you are using the c axis as an indexer, simply rotating to an angular position for machining at that position, it is better to specify C axis rotation with incremental positioning, t or f?
True
40
For Y axis. Motion away from you is positive, motion towards you is negative. T or f?
True
41
For Y axis, what letter do you use for incremental positioning
Y for absolute V for incremental
42
For any machining motion that involves the V axis, you must specify feed rate in ?
Degrees per minute
43
G code for plane selection for z and x axis in live tooling mode
G18- cutting tool pointing Zaxis G19- cutting tool pointing X axis
44
Live tooling face work canned cycles in Z axis
G81- drilling G82- counterpoint G83- deep hole pecking G95- right hand tapping G187- LH tapping G80- cancel canned cycle
45
Diameter work canned cycle, tool pointing X axis for live tooling
G241- drilling G242- c/boring G243- deep hole peck drilling G195- rh tapping G196- LH tapping G80- cancel canned cycle
46
The live tool retracts from the hole to a clearance position which is commonly the position where the tool began, this is called __?
Rapid plane or R plane
47
P,Q and L stands for what in live tooling
P - for counterboring cycles, dwells at the bottom Q- for peck drilling, specifies peck depth L- # of repetition holes
48
__ is most helpful for 3 axis mill/turn machines. If you're machine has a Y axis, you should not need this feature
Polar coordinate interpolation
49
Only reason to use polar coordinate interpolation on mill/turn machines with Y axis is related to the Y stroke. Some machines may not provide enough Y stroke distance to machine large contours, t or f?
True
50
G code to instate polar coordinate interpolation
G112 to instate G113 to cancel it
51
When using polar coordinate interpolation X is always measured using __and C using __
Diameter Radius
52
When you run the first end of a work piece, stop machine, flip the work piece and then machine the other side is called
A flip job
53
3 popular types of 2 spindle turning centers are
- twin/dial spindle turning centers - fixed headstock sub spindle turning centers - sliding headstock sub spindle turning center
54
__ turning centers commonly have 2 matching spindles. Spindles commonly have matching capabilities related to spindle speed, hp and axis travel
Twin/dual spindle turning center
55
On a twin/dual spindle turning center, you use a 2 position switch, commonly labeled __?
Spindle A/B or 1/2
56
2 limitations of twin/dual spindle
-complicated loading and transfer mechanisms required -wasted time. Both parts not finishing at the same time
57
With a __ turning center, the headstock/spindle/workpiece maintains its position in the Z axis during machining. The cutting tool moves along with the z axis
Fixed headstock sub spindle
58
Some fixed headstock sub spindle turning centers have 2 turrets and some have but one turret that is shared between 2 spindles, t or f?
True
59
The major benefit on a fixed headstock sub spindle TC is that the workpiece is automatically transferred from the maon spindle to the sub spindle which minimizes operator intervention, t or f?
True
60
The sliding headstock sub spindle TC is also called a __?
Swiss style turning center
61
Primary benefit of a sliding headstock SSTC is it can produce workpieces having a relatively long length to diameter ratio that are not possible with a fixed headstockstock TC, t or f?
True
62
What axis is used for work transfer?
W axis
63
Most sub spindle turning centers requires how many separate programs?
2
64
Rough turning with 2 cutting tools is commonly called
Pinch turning
65
What do you call a steady rest that follows the turret
Follower rest
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