11-24-2015, 08:25 AM
Sometimes you need to be creative with fixtures.
This little aluminum fixture we made orients the piece you see shown further below in order to machine the drilled and counterbored hole for the handle that gets assembled into it.
Here you see our angle block set to the correct degrees and located in the vise. The parallel we use closest to the operator was machined as well to the correct height for the part to locate on once in the fixture in order to maintain the perpendicularity along the length of the shaft with the machined hole.
Now we place the fixture on the angle block. The fixture is designed to hold both the pivot point of the part and the OD in the correct orientation so that the machined hole we put in will be at the correct angle.
Here you can see the part loaded into the vise ready for machining.
In this picture, you will notice a pin under the part between the OD and the machined parallel. What we were finding out was, the extruded OD was varying from one lot to another.
This would cause the part to be out of square as it sat in the vise. By machining the parallel shorter and using pins to make up the difference in varying OD sizes, we were able to control alignment of the shaft between the jaw faces.
Turning the OD was not an option, as these parts are made complete in our Haas VF-2SS due to the eccentric pivot diameters on each end.
Here you can see the parts in their final assembled state before being packed and made ready for shipping.
This little aluminum fixture we made orients the piece you see shown further below in order to machine the drilled and counterbored hole for the handle that gets assembled into it.
Here you see our angle block set to the correct degrees and located in the vise. The parallel we use closest to the operator was machined as well to the correct height for the part to locate on once in the fixture in order to maintain the perpendicularity along the length of the shaft with the machined hole.
Now we place the fixture on the angle block. The fixture is designed to hold both the pivot point of the part and the OD in the correct orientation so that the machined hole we put in will be at the correct angle.
Here you can see the part loaded into the vise ready for machining.
In this picture, you will notice a pin under the part between the OD and the machined parallel. What we were finding out was, the extruded OD was varying from one lot to another.
This would cause the part to be out of square as it sat in the vise. By machining the parallel shorter and using pins to make up the difference in varying OD sizes, we were able to control alignment of the shaft between the jaw faces.
Turning the OD was not an option, as these parts are made complete in our Haas VF-2SS due to the eccentric pivot diameters on each end.
Here you can see the parts in their final assembled state before being packed and made ready for shipping.
Best Regards,
Russ
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Crosby Machine Company, Inc
Russ
Check us out on Facebook and give us a "Like"
Crosby Machine Company, Inc