21906 - Milling

Select the control from those below to move a milling machine work table quickly into position in relation to the cutter.

• Feed-shaft lever

• Rapid transverse lever

• Cross-slide

• Cross-feed lever

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (A) with one of the options below. You will use each of the options once over the following 5 questions.

If the ____(A)______ is too tight, it will put ________ on the _______mechanism, causing wear on the _________ and premature __________on the Mill slide-ways.

• Extra- Strain

• Lead screws

• Gib

• Driving

• Wear

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (B) with one of the options below. You will use each of the options once over the following 5 questions.

If the __________ is too tight, it will put ___(B)_____ on the _______mechanism, causing wear on the _________ and premature __________on the Mill slide-ways.

• Extra- Strain

• Lead screws

• Gib

• Driving

• Wear

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (C) with one of the options below. You will use each of the options once over the following 5 questions.

If the __________ is too tight, it will put ________ on the __(C)_____mechanism, causing wear on the _________ and premature __________on the Mill slide-ways.

• Extra- Strain

• Lead screws

• Gib

• Driving

• Wear

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (D) with one of the options below. You will use each of the options once over the following 5 questions.

If the __________ is too tight, it will put ________ on the _______mechanism, causing wear on the ___(D)______ and premature __________on the Mill slide-ways.

• Extra- Strain

• Lead screws

• Gib

• Driving

• Wear

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (E) with one of the options below. You will use each of the options once over the following 5 questions.

If the __________ is too tight, it will put ________ on the _______mechanism, causing wear on the _________ and premature ____(E)______on the Mill slide-ways.

• Extra- Strain

• Lead screws

• Gib

• Driving

• Wear

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (F) with one of the options below. You will use each of the options once over the following 3 questions.

If the gib is too loose, some ____(F)____ movement of the table can take place, causing _________ while the work-piece is machined. The work might also be __________.

• Chattering

• inaccurate

• sideways

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (G) with one of the options below. You will use each of the options once over the following 3 questions.

If the gib is too loose, some ________ movement of the table can take place, causing ___(G)_____ while the work-piece is machined. The work might also be __________.

• Chattering

• inaccurate

• sideways

In the statement below about why mill slide-ways must be correctly adjusted, fill in the gap (H) with one of the options below. You will use each of the options once over the following 3 questions.

If the gib is too loose, some ________ movement of the table can take place, causing ________ while the work-piece is machined. The work might also be ___(H)______.

• Chattering

• inaccurate

• sideways

Select two advantages of climb (down) milling.

• Backlash in the machine parts does not cause a problem during the cutting action.

• Suitable for thin parts that are difficult to hold, as the cut presses the work into the holding device.

• The cutter teeth are working on clean material if milling castings and forgings.

• For work hardening materials, the work hardening effect is minimized.