Friday 21 April 2017

(8) Tram - It's all about those buffers

This post is all about manufacturing the buffers. Below is the beginning of the drawing which I updated into mm ready for turning. 


Dimensions half way through being converted (to make it easier as I have multiple buffers to make)


This is the buffer head, which has been taken from a round bar. I have already faced off one end, center drilled and I am now drilling it to the final tapping size


Tapping the buffer head


It has now been screwed onto a bar which I had previously put a thread on. This is the blank that can now be turned true


Turning down the outside of the buffer head


By setting the cross slide at a particular angle (15 degrees), the profile of the buffer head can be seen to be taking shape
 

The buffer now in the jaws, with the shank cleaned and ready for the steps to be turned


The final buffer ready


 I have now moved onto looking at the buffer casings. Taking a round bar I created the profile required using a variety of tools


Another picture of the profile more complete


The profile complete, center drilled awaiting final stepped drilling 


Drilling in progress


An 'Exploded' image showing how the buffer all fits together



The buffer dry assembled inside the buffer case


A hole in the frame has been drilled, tapped and the buffer casing is then screwed into place and finished with a nut (not pictured).


The finished buffer in place