Clevis Mode

The purpose of this machining cycle is to accelerate the motions between two or more coaxial holes.

2 rules must be respected to properly define the clevis operation:

1. There must be a preceding operation to machine the stock in between the holes. A cast stock won’t function.

2. The only important parameter to define is the value of the Rapid feed between the machined holes.

   This parameter is located in the Technology page.

In case the Holes Machining Features (HMF) module is available, the Holes Recognition Function can be used.

The command is accessible in the Features toolset of the Solid design menu.

Before unifying the holes, check that the direction of Z are the same. If not, select the hole to invert, and click Invert command on the bottom of dialog.

After this, select the holes to unify in the tree with Ctrl key for multiple selection.

Then do a right-click, choose Union of selected holes.

Define a standard holes techno for the unified hole.

Ensure Planes is activated in the tree below so that the machining plane is automatically created.

Define the hole machining operation.

Select the hole geometry, the tool and the cycle.

Ensure to set a Rapid feed value in the technology tab and compute the clevis operation.

Due to the stock management, if the pocket is machined before the holes, then the clevis mode is applied. The feed rate is higher inside the pocket.

The following process can be used either on 2D geometry or solid.

What is required to be done is to create a unique hole with the total length of all the holes to be machined.

For the example on the right, there are two coaxial holes, each hole is 11 mm long but the total length is 130 mm.

Create a single standard hole of total length 130mm.

Ensure to define the proper plane orientation for the z placement of the hole.

In the Features toolset, select the Standard holes option from the toolbar.

Define the hole diameter and depth and place the hole to define the entity.

After that, the process is similar.

Define the hole machining operation.

Select the hole geometry, the tool and the cycle.

Ensure to set a Rapid feed value in the technology tab and compute the clevis operation.

Due to the stock management, if the pocket is machined before the holes, then the clevis mode is applied. The feed rate is higher inside the pocket.

Watch the video on the right showcasing both cases to define a proper clevis operation.