Some inspection work

[Toolman]

Using the 6030 as a CMM on a check fixture for a sand casting for a helicopter motor part. The fixture has been falsely accused of scrapping castings. After my inspection I have found there’s nothing wrong with the fixture and that there’s something wrong with the operator.

 

[mattyc]

What about the fixture was assumed to be incorrect?

 

[Toolman]

The position of the three lockliners or drill bushings to each other and the relationship to the template targets that are inside the box were in question. This fixture is called a machine qualify fixture or MQF. You put the casting inside the box, and with adjustment screws you float the casting around until you get the best fit condition to all those templates inside the box. Then you lock the casting down with clamps that are inside the box and you attach a drill gun to the fixture that goes down into the casting and boars a counterbore in three places that establishes a plane through the casting which qualifies it to go to CNC. I’ll throw up a video of one being used. The fixture in the video is one of mine.

 

[lenmann]

Thats pretty damn cool.

What kind of castings? (sand, perm mold, investment)

Are these tools used at the foundry or at the machine shop?

 

[Toolman]

Thats pretty damn cool.

What kind of castings? (sand, perm mold, investment)

Are these tools used at the foundry or at the machine shop?

Sand castings. Airborne. Mostly aluminum and magnesium. These tools are used at the foundry. I put up a post back in 2015 called “I got your Billet hangin’ “ in this section. These were close-up pictures of one of these fixtures to get an idea.