Support for Long Stock with Features Machined on One End, Such as Pipe Couplings

There are materials with machining on one end and materials without it. Some parts to be cut require machining, while others do not. Even when machined and unmachined materials are mixed, you can plan how to use them based on the required part lengths and whether machining is needed.
For example, consider pipes with a coupling machined onto one end. Whenever possible, assign pipes with couplings to parts that require them, and cut parts that do not need a coupling from plain pipes. While prioritizing material yield, cut the longest coupling-required parts from pipes that already have couplings, minimizing the amount of machining needed after cutting. The plan assumes that machining can also be done later, and it accommodates cases where machining changes the part’s length.

 

Examples of Materials with Pre-Machined Features

1. Piping and plant construction (various pipes and tubes)
   Materials that already have threads cut at one or both ends for threaded fittings, grooves, or welded or attached flanges.
2. Construction and structural steel fabrication (structural sections, angles, channels, and H-beams)
   Materials that already have bolt holes or weld bevels machined into the ends.
3. Woodworking and interior finishing (flooring, molding, and square timber)
   Wood that has tongue-and-groove joints, such as integral or separate tongues, or specific angled cuts (miter cuts) on the ends.
4. Electrical, electronics, and telecommunications (wire harnesses, electrical wires, and fiber-optic cables)
   Cables that already have a connector or terminal crimped or wired onto one end.

This assumes that machining can also be performed later.
The plan makes use of pre-machined materials while maximizing yield and leaving offcuts as long as possible.

 

How to Use

When you use this feature, a “Machined” checkbox is added to the Parts and Source input sheets.
Specify whether machining is required.
For both the Source sheet and Parts sheet, enter the length including the machined portion.
For best efficiency, it is recommended to provide both machined and unmachined stock on the Source sheet.

 

Length of the Machined Portion

Specify the length to be discarded when an unmachined part must be cut from machined stock.

 

Length Change from Subsequent Machining

If machining an unmachined piece will shorten it, enter a negative value. If it will make the piece longer, enter a positive value.

 

Cost of Machining Parts Later

[Common to 1D and 2D] This setting is required when using “Minimize stock cost.”
The value entered here is also reflected in the unit price when unit prices are included in printouts.

 

When unit prices are enabled for printing, the part unit price is calculated by adding the following amount to the part sheet unit price:

 

Cost of machining parts later × (total number of locations on parts to be machined later ÷ total number of machined locations)