Arm Assembly and Fabrication

Arm Assembly and Fabrication

Date: 4.13.17
Location: Logan HS
Time: 7 hours
Goal: Fabricate the connection and pivot hinge points for the arm and connect the assemblies.

It took quite a while but we fabricated the hinge points and got the arm assembled in hopes of doing a test on spring strength. We are waiting for two flange bearings to finish the assembly and then mount it on our linear rail system to begin testing range of motion and functionality. Much of the aluminum raw materials had to be machined down to tolerance which took hours to complete. When the assembled arm was placed in a vice for an anchor point and tested, it appeared the gas springs were operating well and taking the load of the grinder off the operator. We will have to see once we get it mounted to the linear rail system.

Welded head tube assembly.

Another view of the head tube assembly.

Drilling the brackets used for creating the pivot points.

Brackets being measured up before mounting.

Flange bearings pressed in place.

Brackets secured in place with graded bolts.

Pivot block being drilled out for 3/8" bolt.

Center pivot point assembled.

Head assembly bolted onto arm frame.

Arm assembled and anchored to vice to test range of motion.

Another view of arm assembly.