WEBVTT

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In this video, we will show you how to use the

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automatic tool presetter option for Haas CNC turning centers

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The automatic tool presetter offers three modes of operation:

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Manual mode is used for initial setup of tool offsets

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Automatic mode is used to update offset values after a tool’s inserts have been changed

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And break detect mode is used to check the cutting face using a pre-set tolerance for tool wear

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To start, press the [MDI DNC] button

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and then Program Conversational [PRGRM CONVRS] to reach the tabbed menu

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Right cursor to the "Probe" tab and press [WRITE / ENTER]

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This brings up the "Probe" menu in manual mode

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This turret holds five tools that have no existing offset data

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Let’s start in Manual mode to generate the necessary data for each tool

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Check that "Manual" is selected in the "OP Mode" box

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The turret is at tool position number 12

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and therefore the "Tool Number" box reads "12"

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This box will always display the current turret tool position

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Enter the offset number you would like to use for this tool

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There are 50 offset numbers available

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but typically the offset number is set the same as the tool number

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Next, set the value for "Tool Tip Direction"

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based on the configuration of the tool you're setting

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In this case we are checking a turning insert with its tip in the number 2 direction

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We can’t enter a value in the "Tolerance" box

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since we only use that in Break Detect Mode

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With the turret a safe distance away

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move the probe arm into position by pressing [F1]

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With the data entered for tool number 12

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you’re ready to check the tool position

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Handle jog the tool in Z and X until it is approximately

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One quarter inch (0.25", 6.35mm) diagonally away from the edge of the probe

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Similar to the image displayed in the tool tip direction graphic

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If the operator door is open you will need to hold down [CYCLE START] to continue with the touch off cycle

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Or, with the door closed, press [CYCLE START]

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The tool tip will touch off in the Z and X directions and record the offsets

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Note that a G-code program is generated in "MDI" which is used for the tool movement

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With the first tool set, move the turret a safe distance

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from the probe arm, and index to the next tool

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Continue on to set the remaining offsets

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When you are finished setting the offsets for all your tools

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Don’t forget to press [F1] to bring the probe arm back to its resting position

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With the tools now set, you still need to define your work offset

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Start by selecting the desired Z work offset

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We are using G54

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Using any of the tools you’ve already probed

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touch the tool to the part face and press [Z FACE MEASURE]

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The distance from the tool probe to the face of the part is loaded in G54, and Z work zero is now set

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Once a tool offset has been set in "Manual" mode

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You can update the tool tip position at any time an insert is changed out

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Here is how:

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Access the "Probe" menu and select "Automatic" from the "OP Mode" box

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Arrow down to select the tool number you want to check

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With the tool number and offset selected, press [CYCLE START]

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The turret will index to the tool selected in the "Tool Number" box

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and bring the tool to the probe and check the offsets

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Repeat this automatic sequence for each tool that needs to be updated

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"Break Detect" mode allows you to measure the difference between

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the initial probe reading for a particular tool insert

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and subsequent readings after wear or damage may have occurred

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The tolerance setting in this mode establishes

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the allowable wear on a given cutting edge

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Select Op Mode "Break Detect"

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and the tool number and offset number you used

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Now select a tolerance for wear on this particular insert

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In this example, we have set this value to 0.004" (0.1016mm)

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When the operator presses [CYCLE START] the turret will index

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to the tool we have entered in the Tool Number box

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and the turret will move to the probe and check the insert

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If the insert is not within the tolerance set earlier, an alarm will announce

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that you have a cutting edge that is no longer within specification

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When you run break detect mode, a program is generated in "MDI"

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If you paste this into a part program in memory, you will have added

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that particular break detect routine to a your program so that

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critical tools are measured before they are used

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The "Break Detect" routine is automatically generated

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in the upper left side of the "MDI" screen

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and is ready to be pasted into a part program

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To insert this sub-routine into a part program, start by pressing [F4]

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Choose number one, “Select / Create Program”

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Find the program you want to modify

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Now, simply scroll to the area of the G-code where you want to insert the sub-routine

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And press [WRITE / ENTER]

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Here is a quick demonstration of the break detect routine

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running within our existing part program

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The part program is just ending a drilling operation

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Before continuing to a tight tolerance boring operation

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the machine will now automatically check

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that the next tool's insert is within size tolerance

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This is particularly useful for checking tools before critical operations

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With these three probing modes at your disposal

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Inputting and checking tool offsets and checking for excessive tool wear

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Making good parts should get significantly easier

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