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In order to successfully machine the self adjusting clamps, we will need to first look into the workholding solution for the operations.
Operation 10 - Milling the Profile of the Self Adjusting Clamps
This operation can be done in a standard vise as we have utilized throughout semesters 1 and 2. Because each apprentice is machining 4 pieces we will review two ways of reproducing work offset positions based on the vise clamping.
Option 1 is to setup an end stop on the cnc mill so we only have to acquire the work offset location once for the 4 pieces.
Option 2 is to manually probe each pieces center center point prior to running the program through on the machine.
We will evaluate each option several times as we write the programs for each operation.
Prior to Operation 10, consideration needs to be taken for subsequent machining operations and how we will locate and secure the workpieces each step of the way to completion.
The image on the left, directly above, shows additional stock added to one side of the part that is perpendicular to the curved profile of the self-adjusting clamp. This additional stock is added to be able to hold onto the material in the vise while machining the full profile to depth at one time.
The image on the right, directly above, shows three tooling holes added to the part to accommodate positioning of the material to mill the slot feature in further operations. Addition of tooling holes is a common practice when we need to position a workpiece about a common rotational axis when feature access is limited by available axes on the CNC Mill.
Operation 20, 30, and 40 requires purpose built vise jaws to locate and secure the machined product of Operation 10. The first manual programs we write will be for the machining of the custom vise jaws necessary for Operations 20, 30, and 40.
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