Reduce travel speed between features

[[Se...]]

Hello,

I am having to measure 700mm down a bore (Z minus) using an elbow/90degree stylus (Pos’3).

The bore is perilously close to the machine column, is there a way to slow down the move speed whilst it makes its journey down to the feature to be measured? 
 

The speed it measures at is fine, it is purely the speed of getting in and out of the bore! 
 

Many thanks

[[Ri...]]

Here is a screen shot of the setting.

Another thing I do, is change the Strategy "Start height" and "target height". I simply swap the values, this way the stylus first scan is at the entry of the feature and not directly at the full depth.

[[Se...]]

Hi Rich,

Unfortunately neither option works.

The first screen shot only changes the measurement/probing speed, not the travel speed to and from the feature.

The second screen shot both circle paths are circa 700mm down the inside of the part, the difference in height isn't going to make a difference. 

 

[[Ma...]]

You can define points without probing to navigate inside if you have a room.

Richard posted correct place to edit travel speed. I have it different on 2018, but for scanning speed i have to go into VAST navigator, where is scanning speed.

[[Se...]]

Maybe I’m doing something wrong then, as Travel-> Speed doesn’t make a difference, it only slows down the speed between points, NOT the speed getting in and out the bore! 

[[Ma...]]

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This can be correct - i think speed between features can not be adjusted individually - using KEY to limit speed to 70mm/s or by defining global speed in start parameters.

Perhaps PCM can help, otherwise it would be good to request this in myVoice

[[DW...]]

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 There are three speeds you should be familiar with when programming Calypso. Babysitting the potentiometer on the control box gets old very quick and sometimes you just aren't fast enough to stop a fatal crash.

The first speed is the speed at which your stylus system travels during navigation. The default is 300mm per second (fast). This speed is only shown in the bottom right of the 'Start Measurement' window (after you hit 'Run'). I suggest when you begin programming, and until you prove out your programs, you keep this at 70mm/s or below.

The second speed you need to be familiar with is the speed of the stylus system before it contacts the part. This is found only in the 'Measurement Plan Editor Features' window, under the 'Travel' drop down menu, then 'Speed'. Think of this speed as the speed after navigation travel but before part contact. The stylus will slow down to this speed beginning at the clearance distance. I have been programming with Calypso for years and I still do not like watching a stylus system rocket into a bore to begin measuring. My personal preference is to set the clearance distance to half an inch, set the clearance distance speed to 10mm/s and let the machine slowly move the probe into the bore to do a measurement.

The third speed is the speed at which the probe scans the feature (assuming you are scanning). This can be found by opening the feature to be measured, clicking on the 'Strategy' button in the top right corner. Then click on your measuring strategy (circle path, polyline, etc). Here you will find the speed for scanning. Use the Zeiss Measuring Cookbook as a starting guide. You will quickly find what works best for your parts.

Your program should look like this when measuring - Stylus system navigates to your feature at navigation speed according to your clearance planes, then moves to measure your feature, slowing down to clearance distance speed when it reaches the clearance distance, contacting the part, scanning at your scan speed, then retracting off the surface to your retract distance where it will speed back up to navigation speed again, off to measure the next feature.

[[Se...]]

So not possible then!

It is a proven program, ran many times, it’s purely how uncomfortably close and deep it is, on £500,000 part!

We also program in the manner described, move, approach, scan speeds been distinctly different! 
 

I’ll stick a suggestion in!

Thanks all! 

Edited Tuesday at 04:18 PM

[[Ch...]]

you can use PCM.  in the presettings for that feature, you could use 'setInspectionDrivingSpeed'   I think I spelled that right.  

 

 

[[Ch...]]

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I usually use this PCM setting for safety, works well, speed is in mm/s (80) is usually safe, keep in mind if you never set it back to 300 or whatever, it will run the rest of the program at that speed I think.

 

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[[Ri...]]

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This is the speed setting to travel to and from a feature, in some cases the Clearance Distance will have an effect as well. The speed setting for Feed is in another menu.

[[Lu...]]

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I assume I need the PCM module to use this setting, right?

[[Ch...]]

I'm pretty sure you do.  

[[Pa...]]

Calypso 2022:

In the strategy for your bore feature, right after Clearance Data, if you place a "position CMM without probing" point near the entry of the bore, the speed setting from Rich's first response will be invoked from that point, into the bore, through the probing, and (I think) back out of the bore.

If I'm wrong about the "back out of the bore" part, duplicate the position point after your probing strategy as well.  When I use these position points I always use them to back out the way I came in wherever possible, so I likely never set it up with a position point on the way in but not the way out.

In many cases you can use Clearance Distance the same way.  Quick aside: Clearance distance is quirky AF.  Read about it first.

We specialize in wicked deep bore work and supplement with conventional machining.  I have styli 30" long to both Y+ and Y- on a single system. I'll use both ends on the same part sometimes and still not be able to reach CL!