6.2 ESSENTIAL CONTROL FUNCTIONS - BASIC MILL OPERATOR QUESTIONS WITH 100 % CORRCT ANSWERS | VERIFIED

When we use the term "crash" on a machine tool, we are primarily speaking of: - Answer-The spindle colliding with another object in the machine enclosure Crashing a CNC machine results in downtime for the machine, and can be very costly to the shop owner. Every shop is concerned about crashing their CNC machines. - Answer-True The quickest way to stop a machine in an emergency is: - Answer-Press the Emergency Stop button If the cutting tool is in the middle of a cut, and you hear a noise that you are unfamiliar with or do not like, and you need to stop the machine, it is best to press: - Answer-Feed Hold One of the differences between Emergency Stop and Feed Hold is that with Feed Hold, all machine motion stops. - Answer-False A benefit of using Feed Hold is: - Answer-The machine does not return to the first line of code in the program, but retains its position wherever you paused the machine motion 7 The use of Feed Hold puts the machine into a hold or pause mode, and remains in that mode until you press Cycle Start. - Answer-True If you press Feed Hold or E-Stop, it is extremely important to contact your Supervisor before resuming operation, to ensure you get back up and running safely. - Answer-True The Reset key gets used a lot on a Haas control. The Reset key: - Answer-Exits all alarm states, including those generated when you press E-StopAny time you encounter an Alarm that does not have an obvious cause, you can get a description of the Alarm by pushing: - Answer-Alarm key, and scrolling through the Alarm Codes When you walk up to a machine, you may discover that the program and tools are already in the machine. If so, it is perfectly fine to press Cycle Start to get the machine running: - Answer-False An important key we need to know is Recover. The Recover key is used: - Answer-When the machine is stopped and the tool-change arm is in the middle of a tool change Another control key that we will use is the Coolant key. By pressing the Coolant key, the Operator will turn on/turn off the flood coolant system. - Answer-True The coolant system is turned on and off in the program by using two M codes. Those M codes are: - Answer-M08 and M09 There will be numerous occasions when you want to move the axes individually. The key that allows this function is: - Answer-The Handle Jog key If you choose to move the axes individually, you will need to choose a jogging speed for the table. The recommended starting key to press is: - Answer-.001 if you are making a long jog move, you can use the Jog Lock function. - Answer-True To use the Jog Lock function, press the Jog Lock key and then press the X, Y, or Z direction keys. Be careful when using Jog Lock and the Z negative key, as you run the risk of "crashing" the spindle into a fixture or workpiece mounted on the table. - Answer-True