Square Flange Connector Housing with Multi-Step Internal Cavity and 0.01mm Flange Squareness by Turn-Mill Composite Single Setup
Square Flange Housing Turning
,Flange Squareness Control
,Multi-Step Cavity Bore
This square flange connector housing is turn-mill machined by Dongguan Changxinda Precision Technology Co., Ltd., a CNC factory established in 2008. The square mounting flange, multi-step internal cavity and external thread are produced in one setup, so the flange face stays perpendicular to the cavity axis and the bolt pattern stays on centre. Critical features — flange squareness, bolt-hole position, cavity steps and wall thickness — are held to ± 0.01 mm and verified on a CMM.
A square flange bolts flat to a panel, so any error in squareness or bolt-hole position shows up immediately as a tilted or misaligned connector. The difficult part is the datum: the flange face, the cavity axis and the thread must all agree. Machining them in one setup from a single datum keeps them consistent, instead of stacking three separate fixturing errors.
Each square flange connector housing follows a controlled eight-stage route:
- Drawing review & DFM: STEP / IGES / SolidWorks / 2D PDF checked for flange size, bolt pattern, cavity steps and thread spec.
- Material: 6061-T6 / 7075 aluminum with mill certificates.
- Turn-mill programming: CAM toolpaths combining turning of the body and cavity with milling of the square flange and bolt holes.
- Turning the body & cavity: multi-step bore machined to diameter and depth with uniform stock for finishing.
- Milling the square flange: four sides and the flange face cut square and perpendicular to the cavity axis.
- Drilling the bolt pattern: holes positioned to the cavity datum within the bolt circle tolerance.
- Threading & surface treatment: external thread cut on the cavity axis, then anodizing or per drawing.
- CMM inspection: flange squareness, bolt-hole position, cavity steps and wall thickness verified with a first-article report.
The square flange housing is a starting point. We machine custom flange connectors with your own flange dimensions, bolt pattern, cavity step sequence, thread size and body length — all to drawing.
We sign an NDA before engineering review, restrict drawings to the assigned programming and machining team, and never display or reuse customer geometry. Fixtures and programs built for your part stay dedicated to your program, and surplus or reject parts are scrapped on request.
Changxinda runs a plant established in 2008 with 90+ staff, multiple turn-mill lathes and 4-axis / 5-axis machining centers backed by a dedicated QC lab.
One shop, ten industries, one inspection standard:
- Square mounting flange machined square to the cavity axis
- ±0.01 mm on flange squareness and bolt-hole position
- Multi-step internal cavity bored to depth
- External thread cut on the cavity axis
- Flange, cavity and thread produced in one setup
- 6061-T6 / 7075 aluminum with mill certificates
- Anodizing, polishing and custom surface finishes
- NDA and IP protection on request
- CMM inspection with first-article report
- From 1-piece prototypes to scheduled production
| Product Type | Aluminum square flange connector housing with multi-step internal cavity |
|---|---|
| Machining | Turn-mill composite, single setup |
| Tolerance | ±0.01 mm on critical features |
| Material | 6061-T6 / 7075 aluminum |
| Features | Square flange, bolt pattern, multi-step cavity, external thread |
| Surface Treatment | Anodizing / polishing / per drawing |
| Inspection | CMM + first-article report |
| MOQ | 1 piece |
| Lead Time | 3–7 days prototypes |
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