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CNC for Fixtures

Workholding.
Vise jaws.
Ball-lock tooling.

CNC machining of production workholding fixtures. Custom vise jaws, soft jaws, fixture plates, ball-lock tooling, modular fixture systems. Precision dowel-pin location for repeatability, hardened locating features for long life, ergonomic design for production efficiency.

Ball-lock ready Hardened inserts Dowel located 5-axis fixtures
01 · Fixture types

Fixture categories we build.

Different machining operations require different fixture approaches. From simple vise jaws to complex 5-axis fixtures to modular systems.

Custom vise jaws

6061 · steel

Custom vise jaws shaped to specific parts. Aluminum for soft jaws (won't mark parts), steel for hard jaws (long life).

Fixture plates

6061 · drilled pattern

Modular fixture plates with standard hole patterns (1/4-20, M6, or M8). For mounting various workpieces.

Ball-lock tooling

Aluminum · precision

Quick-change ball-lock tooling plates. 30-second tool changes between setups.

Pneumatic fixtures

Aluminum · integrated

Pneumatically-actuated clamps for production workholding. Automated loading for robotic cells.

Vacuum fixtures

Aluminum · o-ring

Vacuum fixtures for thin sheet metal parts — vacuum holds parts without physical clamps.

5-axis fixtures

Aluminum · minimal interference

Low-profile fixtures designed for 5-axis machining access. Minimal obstruction of tool paths.

Indexable fixtures

Steel · precision

Fixtures with indexing mechanism for multi-sided machining of one part.

Inspection fixtures

Aluminum · datum

Fixtures for CMM inspection — precisely located datum features for repeatable inspection setup.

Welding fixtures

Steel · heat resistant

Fixtures for holding components during welding. Heat-resistant materials and design.

02 · Fixture customers

Who needs custom fixtures.

Contract machine shops

Custom fixtures for repeat production orders

OEM production

Dedicated fixtures for high-volume OEM production of specific parts

Prototype shops

Flexible fixtures for rapid prototype production

Quality departments

Inspection fixtures for incoming QC and in-process verification

Automation integrators

Fixtures for robotic machining cells and automated production

Automotive tier suppliers

Production fixtures for automotive component manufacturing

Aerospace manufacturers

AS9100-compatible fixtures for aerospace component production

Educational institutions

Training fixtures for technical schools and universities

Research labs

Custom experimental fixtures for materials research

FAQ

Production Fixtures questions.

Soft jaws: aluminum 6061 — machined to exactly match the workpiece shape. Don't mark parts. Lower life (wear faster). Used for cosmetic parts, precision setups. Hard jaws: tool steel (O1 or 4140) with hardened serrated gripping surface. Very long life. Leave marks on parts but hold securely. Used for high-volume production of parts where grip marks don't matter. Mix: most customers have multiple sets for different applications.
Ball-lock system (by Jergens and others): tooling plate attaches to machine bed via ball-lock bushings. Tool change: retract bushings, lift old tool off, set new tool, engage bushings — 30 seconds. Traditional vise/fixture change: 15-30 minutes. For high-mix production, ball-lock tooling is worth investment. Ball-lock adapters on all fixtures enables consistent tool change regardless of specific fixture.
5-axis machining requires access to multiple faces of workpiece simultaneously. Fixture design implications: minimal overhang from part (tool would crash into fixture), tall parts often mounted from bottom edge only, specialty clamps (pressure pads, Carvesmart claw-lock) for minimum obstruction. We design 5-axis fixtures to maximize machining access while maintaining secure workholding.
For repeatable fixture setup, dowel pins provide precise positioning. Typical dowel hole: reamed to H7 tolerance (6-12 mm diameter), pins press in with 0.005-0.015 mm interference. Locating features repeatable ±0.005 mm across setups. Our fixture workflow: CNC precision + jig-boring for datum holes + reaming for dowel holes. Fixtures swap in and out with confidence.
Pneumatic: fast cycle (< 1 second per part), consistent clamp force, automation-compatible. Higher cost. Used for production cells with 100+ parts/hour. Manual: lower cost, simpler, sufficient for low-volume production. Many hybrid designs: manual coarse clamping + pneumatic fine positioning. We design based on production economics — right clamping for the production scale.
Simple vise jaws: 5-7 days. Modular fixture plates: 5-10 days. Complex production fixtures (multi-station, pneumatic): 3-5 weeks. 5-axis fixtures: 2-4 weeks including design iteration. Complete production tooling packages: 8-16 weeks including design, build, first-part validation. Early engagement on fixture design saves time vs redesign after production starts.
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