Installation Reference · Quality Inspection · T-Slot Cube Station

Inspection Station Frame & Camera Mount Reference

This page covers how to build a tabletop inspection station for the Zira AI Vision camera. The structure is a 40 in cube assembled from black aluminum T-slot extrusion, joined at every top corner with a 3D printed Zira corner connector. The top face carries a center beam that holds the camera over the exact middle of the station, looking straight down. The bottom face is left fully open so product can be pushed in along the table surface and pulled back out after capture. All dimensions are given in both imperial (in) and metric (mm) units.

1Station overview

The Inspection Cube at a Glance

The station is a four legged portal cube. Four posts stand on the table, a doubled square frame closes the top, and one beam crosses the center of that top frame to hold the camera. There is no bottom frame, so the table surface itself becomes the inspection plane and product slides in freely from the open front.

Inspection Cube — Isometric As built
Zira. camera beam AI camera post product in open bottom
40 × 40 in1016 × 1016 mm
Top footprint
40 in1016 mm
Height
40 series40 × 40 mm T-slot
Profile
Top centerlooking down
Camera
2Frame parts

The Extrusion Cut List

The frame breaks down into a handful of extrusion pieces in four roles: posts, a doubled top frame (outer and inner rails), one camera beam, and lower braces that stiffen the open bottom. Members that butt between two others are cut shorter than the 40 in envelope by twice the profile width.

Parts Breakdown Exploded
4× post · 40 in 2× top rail (outer) · 40 in 2× top rail (inner) · 36.85 in 1× camera beam · 36.85 in lower braces · cut to fit
4 posts40 in / 1016 mm
Vertical
2 outer40 in / 1016 mm
Top rail
2 inner36.85 in / 936 mm
Top rail
1 beam36.85 in / 936 mm
Camera
Cut formula
Butted member length = outer dimension minus (2 × profile width). With a 40 mm profile that is 1016 mm minus 80 mm = 936 mm. Recompute the inner rails and beam from the profile you actually buy.
3Zira corner connectors

How the Corners Join

Every joint is a right angle. The four top corners are three way joints where a post meets two perpendicular rails. Zira uses a 3D printed corner connector, debossed with the Zira mark, that seats into the slots and is locked with T-nuts and button head screws. Lower braces use the same connector family.

Zira. 3-WAY CORNER post + 2 rails
Top corner connector 3D printed, debossed Zira mark
Real 3D printed Zira corner connector on the lab booth
As built in the lab doubled top frame meeting at the corner
Connector3-way corner cube3D printed
FasteningT-nuts + button headM8 typical
Joints4 top corners+ lower braces
MarkZira debossouter face
Stability with an open bottom
Because there is no bottom frame, do not leave the station free standing under load. Anchor the feet to the table or keep the lower braces shown in the lab build. The legs splay slightly outward toward the floor for a wider, steadier stance. Keep the product entry side clear.
4Build the cube

Front & Top Views

The front view sets the 40 in square opening and the doubled top frame. The top view shows the center beam crossing the frame and the camera positioned over the exact middle of the footprint. Dimensions are shown in both imperial and metric.

Inspection Cube — Front View Front View
table 40" 1016 mm 40" 1016 mm lower brace
40 in1016 mm
Opening width
40 in1016 mm
Height
Splayedwider base
Legs
Inspection Cube — Top View Top View
Zira. 40" 1016 mm center beam camera
40 in1016 mm
Frame side
Doubledouter + inner
Top frame
Centerover middle
Camera beam
5Mount the camera

Mounting the Camera on the Center Beam

The camera ships pre assembled in its CNC machined aluminum housing with the adjustable bracket. On this station the bracket attaches to a slide plate that rides in the underside slot of the center beam. Slide it to the middle, level it, and lock it down.

beam slot slide plate AI camera line of sight
Mount detail slide plate in beam slot, lens straight down
  • Drop a T-slot slide plate into the underside channel of the center beam.
  • Bolt the Zira camera bracket to the slide plate with the four supplied screws.
  • Slide the assembly to the center mark on the beam, then lock the T-nuts.
  • Aim the lens straight down and tighten the bracket pan and tilt joints.
Centering tip equal offset from both rails puts the lens over true center
6Set camera height

Why 40 in Is the Right Height

The Zira AI Camera has a 60° field of view, which gives a simple 1:1 rule of thumb. The distance from the lens to the surface should be at least equal to the longest dimension you need to capture. At 40 in of working distance, this station frames roughly a 40 in wide inspection field in a single shot.

60° FOV Inspection surface (table) Distance D (lens → surface) Capture width W D ≈ W (1:1 rule)
Rule of Thumb
For a 60° FOV camera, the mounting distance from the inspection surface should be at least equal to the longest dimension you need to capture.
Worked Example
A 40 in (1016 mm) cube puts the lens about 40 in (1016 mm) above the table, capturing a field roughly 40 in across in one frame.
Surface to captureMin. distance
40" / 1016 mm (GMA)40" / 1016 mm
42" / 1067 mm42" / 1067 mm
48" / 1219 mm48" / 1219 mm
30" / 762 mm30" / 762 mm
24" / 610 mm24" / 610 mm
7Compare to the lab build

Lab Build Photos

Photos of the inspection station assembled in the Zira lab. Use these as a visual reference for the doubled top frame, the 3D printed Zira corner connectors, the center camera beam, and the splayed legs on an open bottom.

Assembled T-slot inspection station in the Zira lab
Overview Full frame with the doubled top, center beam, and open bottom on a wider, splayed-leg stance.
Close-up of the 3D printed Zira corner connector
Corner Detail 3D printed corner connector with the debossed Zira mark joining two top rails and the leg.
Angled view of the assembled inspection frame
Frame Angled view showing the center beam across the top and the lower braces tying the legs together.
8Bill of materials
ComponentMaterialDimensionsSystem
Vertical post ×4Black T-slot extrusion40 × 40 mm × 40" (1016 mm)Quality Inspection
Top rail, outer ×2Black T-slot extrusion40 × 40 mm × 40" (1016 mm)Quality Inspection
Top rail, inner ×2Black T-slot extrusion40 × 40 mm × 36.85" (936 mm)Quality Inspection
Camera center beam ×1Black T-slot extrusion40 × 40 mm × 36.85" (936 mm)Quality Inspection
Lower braceBlack T-slot extrusion40 × 40 mm, cut to fitQuality Inspection
Zira corner connector ×43D printed (PETG / ASA)3-way corner cube, debossed markQuality Inspection
Camera slide plate ×1Aluminum T-slot plateRides underside of center beamQuality Inspection
Camera bracket ×1Adjustable aluminum bracketSupplied with the AI CameraQuality Inspection
Leveling feet ×4Adjustable feet / anchorsPost base, table fixingQuality Inspection
T-nuts + button head screwsSteel hardwareSized to 40 series slot, M8 typicalQuality Inspection