Metal Lathe Introduction: Difference between revisions

Revision as of 20:34, 25 March 2020

This is the content required for an introduction to our metal lathe - reading this does NOT replace the mandatory session with a tutor! It will make it a lot quicker though ;-)

Safety

Personal protection:

Dangers	Precautions
exposed, rotating chuck - can easily catch loose clothing, jewellery or hair	wear short sleeved clothing or tight fitting sleeves tie long hair together don't wear any kind of jewellery (e.g. rings) as they may get caught in the chuck or trap shavings wear personal protection but not gloves, as they might get caught in the rotating parts keep transmission covers closed during operation
loose workpieces can be thrown at high speeds	make sure to secure the workpiece properly in the chuck use the appropriate chuck for each workpiece make sure the tool bit is secured properly in its holder
small debris can be thrown towards the user	a face shield in addition to goggles is recommended
cluster of shavings ('rats nests') can be caught by the chuck => very sharp; quickly rotating object...	regularly remove shavings around the chuck (with the machine turned off)
autofeed will cause a crash if left unattended!	never leave the machine unattended, especially when working with autofeed
shavings (especially steel) are very sharp & hot, parts of the machine/workpiece can become hot
no prevention of turning on after loss & restoration of power (keine Anlaufsicherung)	if the power has been lost for whatever reason, always turn the switch "off" before restoring it!

Precautions

Demonstration

The tutor will show you these steps in detail:

Function and Maintenance

compound slides move 0.2mm per 1/10 of a revolution (1 indent)
- radius reduces twice as much

Change Gearing

Change and Secure a Workpiece

Tooling

Turning a Piece with and without Autofeed

turn a part to size
- outside diameter
- inside diameter
drill a hole

Waiting List

This introduction takes longer than many others and usually can't be done spontaneously during regular opening times. If you would like to receive it, please add yourself to >> this list << and we will find a good time once a few members are on it!

@@ Line 14: / Line 14: @@
 * don't wear any kind of jewellery (e.g. rings) as they may get caught in the chuck or trap shavings
 * wear '''[[Personal Protection|personal protection]]''' but '''not''' [[gloves]], as they might get caught in the rotating parts
+* keep transmission covers closed during operation
 |-
 | loose workpieces can be thrown at high speeds ||
@@ Line 32: / Line 33: @@
 === Precautions ===
-''which danger do these belong to?''
-* keep transmission covers closed during operation
-* compound slides move 0.2mm per 1/10 of a revolution (1 indent)
-** radius reduces twice as much
 == Demonstration ==
@@ Line 42: / Line 38: @@
 === Function and Maintenance ===
+* compound slides move 0.2mm per 1/10 of a revolution (1 indent)
+** radius reduces twice as much
 === Change Gearing ===