Fit and stack review
The folding envelope, stop dimensions and leg-to-leg differences are reviewed as one tolerance chain.
ASSEMBLY & MECHANISMS
Telescoping Tripod Stand Assembly
A pocket-size tripod stand that folds into a 140 × 35 mm envelope and extends to 610 mm: a stainless body, three folding legs, steel telescoping stages and a finger-pad release, built from machined and purchased parts.
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Typical requirements
- Components
- 41 machined and purchased items with final assembly
- Material
- 304L and 304 stainless body, hub and collar; steel telescoping stages
- Process
- CNC turning and milling, welding, finishing in one setup
- Envelope
- Fits a 140 × 35 mm gauge stowed; 610 ± 10 mm deployed
- Weight target
- 323 to 357 g without the carry sleeve
- Validation
- Lock holding, release force and weld joint tests on samples
Engineering considerations
- After the hub is welded, the three pin holes, the collar bearing face and the weld contour are finished in one setup so the leg axes stay related to each other.
- The weld bead has to stay inside the modelled envelope, because the folded legs sit very close to the body.
- A fine spring, a slide and a purchased detent plunger form the release, so fits and spring data are proven on samples before the full build.
- The release is operated with a finger pad, without tools or a fingernail, and the leg has to lock again on its own.
Typical manufacturing route
Parts and purchasing
Machined parts are made while purchased items such as the plunger, spring and seals are sourced and checked.
Weld and finish
The hub is welded to the body, then pin holes, bearing face and weld contour are finished in a single setup.
Assembly and samples
Sample sets are assembled and tested for locking, release and height before the batch is released.
Typical inspection plan
- Stowed product checked in the 140 × 35 mm cylinder gauge after finishing.
- Deployed height measured on a hard floor and leg lengths compared with each other.
- Lock holding under load and finger-pad release force recorded on sample sets.
Applying this to your part
The actual route, tolerances, inspection scope and records are agreed for each drawing during quotation.
Engineering guides for parts like this
Engineering guideDFM for CNC Machined Parts: Nine Principles and How to Run a Design ReviewWhat a DFM review of a CNC part should hand back: drawing issues marked with a proposed change and an owner, the nine principles…Read the guideEngineering guideCNC Milling vs Turning for Shafts, Flanges and Housings: When Mill-Turn Pays OffWhen a shaft, flange or housing should be turned, milled or made on a mill-turn machine, with a part-by-part decision table, the geometric tolerances…Read the guide
See also our custom machined parts.
PROJECT INQUIRY
Request a quotation for a similar component
Send the drawing, material, quantity and the features that control assembly. An engineer replies within one business day; NDAs are signed on request.
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