SAE J826/3_202111

This document describes the 3D computer-aided design (CAD) parts and file formats for the HPM-1 H-point machine available from SAE. The intended purpose for this information is to provide a master CAD reference for design and benchmarking. The SAE HADD Committee recently developed the computer-aided design (CAD) data representing the complete SAE J826 H-point machine (HPM). Prior to this activity, CAD versions of the HPM were created by end users based on scans of the physical parts. This standard provides traceable documentation for the SAE HPM CAD files that can be used as a 3D design tool or can verify the shape/size compliance of existing components. This project coincides with the SAE HADD Committee’s creation of CAD surface data for the SAE J826 3D H-point machine (HPM-1) cushion and back pan outer shells published in SAE J826/1, as well as the 2D CAD template for SAE J826 H-point machine published in SAE J826/2. Previous documentation describing the production SAE J826 HPM was contained in a series of two-dimensional layout drawings from 1974, the final assembly fixturing jig, and in other minor build and SAE J826 revisions made over the years.