MSSC - Manufacturing Processes and Production

The three common types of mechanisms are levers, ______, and inclined planes.

wheels

The metric system expresses force in ______.

newtons

A spring scale is used to measure ______.

force

The English unit of measure of weight is the ______.

pound-force (lb-f)

The Law of Moments can be used to determine ______.

both the force needed to balance OR force needed to move a load

Torque can be calculated by multiplying the distance from the fulcrum and ______.

the force applied

A force that makes an object rotate about a point is called ______.

torque

A second-class lever has its ______.

load between the fulcrum and the effort arm

A third-class lever has its ______.

effort arm between the fulcrum and the load

A(n) ______ is produced when forces applied to a lever cause it to rotate.

rotational moment

Mechanical advantage is the ratio of the force required to move a load divided by _____.

the effort force applied

The mechanical advantage of a third-class lever can be found by the ratio of the length of the ______ arm divided by the length of the ______ arm.

effort, resistance

The coefficient of friction is the ratio of the force of friction divided by the ______.

normal force

Rolling friction is ______.

less than both static and kinetic friction

What is the unit of measure for the coefficient of friction?

it has no unit

One application that takes advantage if both high and low friction is a(n) ______.

belt sander

A wheel reduces friction because _____ friction is less than sliding friction.

rolling

The mechanical advantage of an inclined plane is the ratio of the ______ of the inclined plane divided by its ______.

length, height

The double rocker linkage is one type of ______ linkage.

four bar

The slider crank linkage is also known as the ______ linkage.

three bar

What type of linkage consists of a driver arm, connecting rod, and a follower?

double rocker

The follower of the ______ linkage moves in an arc.

crank rocker

A ______ linkage changes rotary motion into reciprocating (back and forth) motion.

slider crank

The crank rocker linkage is one type of ______ linkage.

four bar

A ____ is mounted on a shaft by means of a key.

cam

The four properties of a cam are: rise, fall, ______, and constant velocity.

dwell

A cam is a wheel that, when combined with a cam follower, produces a(n) ______ motion.

reciprocating

Turnbuckle has two bolts, where ______.

one has left-hand threads and the other has right-hand threads

On a CNC milling machine a movement along the X direction would move the ______.

table

In a CNC machine operation, zero offset ______.

allows the operator to move the part to the most desirable location on the work table

During the cutting action, the tool tip ______ the metal until it exceeds its fracture point.

deforms

Feed of a single point cutting tool most affects the ______.

tool's life

A built-up edge condition of a cutting tool causes it to ______.

cut more deeply

Round stock is specified using ______.

diameter and length

What is used most often to cut raw stock into shorter lengths?

horizontal band saw

When using a horizontal band sat to cut stock to a specific length, the saw blade should touch ______.

just the outside of the line you created on the material

On a vertical band saw, the blade guide should be set ______.

3/8 inches to 1/2 inches above the stock at its thickest point

A ______ punch is used to create a very small indentation.

prick

Layout work is the operation of ______.

transferring data from a technical drawing to the part

A drill press will under-size the holes if the ______.

drill bit has a worn margin

The size of a drill is usually stamped on its ______.

shank

______ are used to life the work piece off the bottom of the vice.

Parallels

During the drilling of a hole, the drill is raised to ______.

clear the chips from the hole

Weight can be described as the ______ with which an object is attracted to the earth.

force

Define discrete manufacturing.

Products sold by the number (10,000 screws, one million pennies)

Define process manufacturing.

Often sold by weight or volume, involves changing the nature of ingredients.

Define a thermoplastic.

Plastic that can be reheated and remolded again.

Define a thermoset.

Plastic that decomposes if reheated.

Define elastomer.

A material that can be stretched at room temp to at least 2x original length and it returns to normal.

The coefficient of friction describes the ______.

friction between two objects

With CNC Milling tool dimensions; the X direction moves the ______.

table side to side

With CNC Milling tool dimensions; the Y direction moves the ______.

table up and down

With CNC Milling tool dimensions; the Z direction moves the ______.

tool up and down

Filing can be used to ______.

debut, square or chamfer

Round stock is specified by using ______.

diameter and length

Net-shape manufacturing forms a part with ______.

only one process

Reamers have ______ cutting edges.

multiple

A reamer is fed into into a pre-drilled hold ______.

using one smooth, constant pressure operation

The drill selected to prepare a hole for a reaming operation should be smaller than the diameter of the reamer by ______ inch if the finished reamed hole is larger than 1/2-inch diameter. How about a hole that is smaller than 1/2-inch in diameter?

1/32", 1/64"

Reamers are used to drill holes ______.

That have precise diameters, that are smooth on the inside, only after the hole has been prepared by a regular twist drill

The ______ is used to control how deep a countersink enters the work piece.

depth gauge

Describe countersinking.

It creates a cone shaped opening in a hole, it allows a flat head screw to sit completely below the surface of a part, it also creates a chamfer on a part

The _____ of the counterbore is used to guide the counterbore so that the counterbore is perfectly aligned with the clearance hole.

pilot

A counterbore ______.

enlarges a hole for a portion of its depth

A counterbore has a ______.

pilot

It is possible to tap a hole using a ______.

drill press

A tap looks like a ______.

screw

During the tapping operation, the tap should be rotated counter clockwise for 1/2 turn following each 1 turn clockwise to ______.

break off the chips to avoid jamming the tap

The maximum strength is reached when the thread engagement reaches ______.

60 percent

Proper ______ require(s) that when parts are requisitioned that they are easy to locate and can be delivered to another department on time.

material handling

The ______ on a boiler burner makes is easy to detect a main flame.

UV fire eye

A thorough check for a history of similar problems should occur ______.

on problems that keep recurring at regular intervals

An announcement system called ______ (Japanese for signboard) is used to announce the need for reactive maintenance.

andon

Companies use ______ to show data about the progress of production.

job status reports

Manufacturing paths are indicated by ______ documents.

process flow

A process's ______ is the rate at which a production system creates a finished product.

capacity

Reallocation of resources is the best way to ______.

increase production if current production cannot meet the demand

Red tags are used to indicate scrapped parts while a yellow tag indicates a part that _____.

has been placed on hold

On a bill of materials, the ______ indicates which parts form each subassembly.

part level number

A ______ is a list of all the materials and components required to make the product and the quantity of each.

bill of materials

Spare parts used in repair work are typically included in the calculation of ______.

production downtime

For a 365-day year with 30 days of scheduled downtime, what is the availability?

335 days minus unscheduled downtime

As part of a(n) ______, manufacturing see end of line inspections as one form of waste.

lean manufacturing process

An increase in the number of inspections is not likely to ______.

reduce the number of parts that are out of spec

Companies strive to eliminate waste and non value added work through a process of ______.

continuous improvement

The critical nature of a job has the least impact on ______.

job scheduling

An important requirement in order to achieve just-in-time manufacturing is to ______.

schedule jobs well

When a production line is operating at maximum speed, a need to increase production can only be achieved by ______.

scheduling overtime

The elapsed time between receiving a customer order and the product being delivered is called ______.

order cycle time

Materials ______ forms are important because they allow the company to track of where money is being spent, and to help in budgeting for operating expenses.

requisition

______ saves a company money because it reduces the cost associated with maintaining a large inventory of items.

JIT

______ includes any materials that have been issued to a manufacturing order that have not been produced into a finished product.

Work-in-progress inventory

Kanban is considered a(n) ______.

pull inventory system

Opportunities for improvement of a process can be tracked by ______.

a Pareto diagram (80/20 rule)

Measuring and tracking production is one way to apply ______.

statistical process control

Companies use ______ to determine how manufacturing methods are most likely to fail.

Process Failure Mode and Effect Analysis (PFMEA)

A frequency chart is typcally used to establish ______.

sampling plans

New product design teams should perform a(n) _____ as early in the design process as possible.

Design Failure Mode and Effect Analysis (DFMEA)

As part of a continuous improvement, companies use ______ to set goals to strive towards.

product benchmarks

Less-than-truckload (LTL) shipping operates by ______.

having one truck make several stops before achieving full load