97 lines
3.8 KiB
Markdown
97 lines
3.8 KiB
Markdown
|
---
|
|||
|
|
title: "REV ION Build System — Team 2890 Structure"
|
|||
|
|
tags:
|
|||
|
|
- hardware
|
|||
|
|
- structure
|
|||
|
|
- extrusion
|
|||
|
|
- REV
|
|||
|
|
- 2890
|
|||
|
|
- ion
|
|||
|
|
type: hardware-spec
|
|||
|
|
owner: 2890
|
|||
|
|
status: active
|
|||
|
|
sources:
|
|||
|
|
- "https://docs.revrobotics.com/ion-build"
|
|||
|
|
- "https://docs.revrobotics.com/ion-build/structure/extrusion"
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
# REV ION Build System — Structure & Extrusion
|
|||
|
|
|
|||
|
|
## Overview
|
|||
|
|
|
|||
|
|
Team 2890 uses the **REV ION Build System** as their primary mechanical structure system. ION is designed to enable rapid iteration and reconfiguration without large budgets or extensive manufacturing resources. The system is built around the **MAXSpline** — a unique spline shape that combines bearing support with torque transfer.
|
|||
|
|
|
|||
|
|
## Core Concepts
|
|||
|
|
|
|||
|
|
### MAXSpline
|
|||
|
|
|
|||
|
|
The MAXSpline is the foundation of the ION system. It appears in:
|
|||
|
|
- MAX Hubs (for bearing and sprocket mounting)
|
|||
|
|
- Live axle applications
|
|||
|
|
- Motion components (linear slides, rotations)
|
|||
|
|
|
|||
|
|
The shape allows bearing support and torque transfer to be combined in a single feature — making mechanisms more compact.
|
|||
|
|
|
|||
|
|
### MAX Pattern
|
|||
|
|
|
|||
|
|
The MAX Pattern combines:
|
|||
|
|
- **#10 clearance holes** in a 1/2" pitch grid
|
|||
|
|
- **MAXSpline bore** every 2" down the length
|
|||
|
|
|
|||
|
|
This pattern enables:
|
|||
|
|
- Easy bearing mounting with correct center-to-center distances
|
|||
|
|
- 1:1 power transmission with #25 chain or RT25 belting
|
|||
|
|
- Rapid prototyping with standard #10 hardware
|
|||
|
|
|
|||
|
|
### Grid Pattern
|
|||
|
|
|
|||
|
|
Some MAXTube features **three rows of #10 holes** on a 1/2" pitch grid. This is ideal for rapidly building structures with 1in brackets.
|
|||
|
|
|
|||
|
|
## MAXTube Extrusions
|
|||
|
|
|
|||
|
|
MAXTube is aluminum 6061 extrusion. Available sizes:
|
|||
|
|
|
|||
|
|
| Size | Pattern | Length | Nut Groove |
|
|||
|
|
|------|---------|--------|------------|
|
|||
|
|
| 1/2 × 1/2 in | Grid | 47in | No |
|
|||
|
|
| 1 × 1 in | Grid | 47in | Yes |
|
|||
|
|
| 1 × 1 in (1/16" wall) | Grid | 47in | No |
|
|||
|
|
| 1 × 1 in (1/8" wall) | Grid | 47in | No |
|
|||
|
|
| 2 × 1 in Light | No Pattern / Grid | 47in | Yes |
|
|||
|
|
| 2 × 1 in | No Pattern / Grid / MAX | 3–47in | Yes |
|
|||
|
|
| 2 × 2 in | Grid / MAX / MAX+Grid | 47in | No |
|
|||
|
|
|
|||
|
|
**Nut groove note:** On 1in sides, the nut groove holds #10 nuts in place where a wrench can't reach. Use **2×1 Standard** for secure bearing fit; **2×1 Light** where weight is critical.
|
|||
|
|
|
|||
|
|
## 1in Extrusion (REV-21-1000)
|
|||
|
|
|
|||
|
|
4-sided slot extrusion accepting standard #10 hardware including low-profile nylock nuts. No T-nut needed — slide #10 hex head through slot, adjust as needed. Can be tapped 10-32 for permanent mounting.
|
|||
|
|
|
|||
|
|
Good for builds that don't fit the standard pitch patterns.
|
|||
|
|
|
|||
|
|
## MAXSpline Bore Spacing
|
|||
|
|
|
|||
|
|
For proper chain alignment: center-to-center distances are set for simple 1:1 #25 chain transmission. The MAX Pattern bore spacing every 2in makes this straightforward.
|
|||
|
|
|
|||
|
|
## Connection to Training
|
|||
|
|
|
|||
|
|
**For students:** The ION system replaces custom machining. Understanding:
|
|||
|
|
- **Why standardized patterns matter** — interchangeable parts, no custom drilling
|
|||
|
|
- **MAXSpline as a system** — one spline shape across multiple components (hubs, bearings, motion)
|
|||
|
|
- **Nut grooves eliminate blind assembly problems** — you can hold the nut while fastening
|
|||
|
|
- **Pitch grid = predictable spacing** — 1/2in pitch means you always know where holes line up
|
|||
|
|
|
|||
|
|
**Related training modules:**
|
|||
|
|
- [[swerving-modules]] — MK4i mounts to this structure
|
|||
|
|
- [[motor-basics]] — how motors mount to structural extrusions
|
|||
|
|
- [[frc-mechanical-basics]] — understanding structural systems
|
|||
|
|
|
|||
|
|
## Source Links
|
|||
|
|
|
|||
|
|
- ION Build overview: https://docs.revrobotics.com/ion-build
|
|||
|
|
- Extrusion guide: https://docs.revrobotics.com/ion-build/structure/extrusion
|
|||
|
|
- Product catalog: https://www.revrobotics.com/ion-system/
|
|||
|
|
|
|||
|
|
## Notes
|
|||
|
|
|
|||
|
|
Chris and team use this as their standard build system. The compatibility between ION mechanical and ION electrical (SPARK Flex, NEO Vortex) means the whole robot — structure, drivetrain, and motor control — uses one integrated system.
|