Workholding
Workholding — Wiki
How a part is held and located — vises, fixtures and tombstones, plus the datum discipline that makes every setup repeat.
15 entries in this group.
- Clamping Principles & ClampsClamping holds a part against its locators while it is machined: clamp types, clamping forces and the rules that stop a clamp lifting or distorting the work.Sep 7, 2026
- Datums in SetupDatums in setup are the reference surfaces a setup locates on and machines from; choosing them to match the drawing's datums is what keeps tolerances honest.Sep 7, 2026
- Fixture Plates & Tooling PlatesA fixture plate is a precision plate with a grid of tapped holes, bolted to the machine table or tombstone to carry vices, clamps and fixtures.Sep 7, 2026
- Fixture RigidityFixture rigidity stops the work and the fixture from flexing under the cut: supports beneath the forces and a short, stiff load path from tool to table.Sep 7, 2026
- Locating Principles (3-2-1)Locating principles give a part one definite, repeatable position; the 3-2-1 rule fixes its six degrees of freedom without over-constraining it.Sep 7, 2026
- Magnetic WorkholdingMagnetic workholding holds steel and iron parts on a magnetic chuck by magnetism: how permanent and electromagnetic chucks grip flat work without clamps.Sep 7, 2026
- Modular FixturingModular fixturing assembles standard plates, locators and clamps into a fixture for one part, then breaks it down and reuses the pieces for the next job.Sep 7, 2026
- Setup Reduction & Quick-Change WorkholdingSetup reduction cuts the time a machine spends between jobs: workholding set off the machine and quick-change systems that keep it cutting.Sep 7, 2026
- Thin Wall & Delicate Part WorkholdingThin wall and delicate parts distort when clamped hard: workholding that holds them without crushing - full-form jaws, mandrels and a light, even grip.Sep 7, 2026
- TombstoneA tombstone is a multi-faced fixture column bolted to a machining-centre pallet, letting one setup machine many parts on several faces in a single cycle.Sep 7, 2026
- Vacuum WorkholdingVacuum workholding grips thin, flat or non-magnetic parts by suction on a sealed table: how a vacuum chuck holds work without clamps or distortion.Sep 7, 2026
- Vices & Soft JawsA machining vice and its soft jaws hold prismatic work for milling: hard jaws grip raw stock, aluminium soft jaws are machined to fit a finished part.Sep 7, 2026
- WorkholdingWorkholding locates, clamps and supports the part against the machine; it cuts no metal, yet decides the accuracy, the setups and the cuts a job can take.Sep 7, 2026
- Workholding ChucksChucks hold round and bar work on a turning machine: the 3-jaw scroll chuck self-centres, the collet chuck holds bar true and the power chuck runs production.Sep 7, 2026
- Zero Point SystemsZero point systems couple a fixture to the machine table in seconds and return it to the same position every time - workholding that makes setups repeatable.Sep 7, 2026