5-Axis Machined Multi-Face Tombstone Fixture Tower with 0.01mm Locating Hole Grid Precision

This tombstone fixture tower is machined from 6061-T6 plate and bar into a four-face fixture body that mounts on a 5-axis trunnion or a horizontal machining center pallet. Each of the four faces carries a grid of bored locating holes and stepped clamping pockets referenced to the same base datum, so a part set up on face 3 lands in the same relationship to the machine as the same part on face 1. The tower is used to run four operations or four part variants in one cycle without re-fixturing, which is where most of the cycle time and most of the position drift in small-part machining comes from.

Four-face work on one datum is a machine-capability question, not a fixturing question. This is the route used to keep hole grids mutually aligned.

Boring on an indexed 5-axis face rather than interpolating with a 3-axis path removes the chord error that would otherwise appear as hole size variation across the grid. Base flatness is checked before the tower is packed, because a tower that rocks on the pallet loses every downstream position.

The tower is designed around your pallet, your parts and your spindle reach, so dimensions and face layout are open.

• Face count from 1 to 4, with different hole grids and pocket layouts per face.
• Tower size: height 150–600mm, face width 100–500mm, matched to your trunnion or pallet envelope.
• Hole grids: H7 locating holes, dowel patterns, M6/M8/M10 threaded grids, or a mixed grid for both.
• Pockets: stepped clamping pockets, jaw mount rails, T-slot inserts, or blank faces for later machining.
• Materials: 6061-T6 for general use, 7075-T6 for higher stiffness, cast iron equivalent design guidance on request.
• Interface: pallet bolt pattern, trunnion mount, zero-point clamping studs, lifting eye holes.
• Finishes: clear or black anodizing, hard anodizing on wear faces, laser grid marking.
• Prototype from 1 piece, with the same program and probing routine kept for repeat orders.

Send your pallet drawing or zero-point system details, part sketches and spindle reach, and our engineering team returns a face layout proposal with stiffness and collision notes plus a quote, usually within one to two working days.

Dongguan Changxinda Precision Technology Co., Ltd is a custom CNC machining supplier established in 2008 in Dongguan, Guangdong, China. The shop runs 4-axis and 5-axis machining centers, turn-mill combined lathes and CNC lathes with roughly 100 staff, including dedicated CAM programming and quality teams. More than 200 customers are served in medical equipment, robotics, automotive, aerospace, automation, laser, LED, lithium battery and precision testing instruments, and 50–60 percent of output is exported. The company is ISO 9001:2015 certified, holds annual sales in the USD 10–20 million range, and inspects in house on CMM and optical measurement equipment. Fixture towers, pallet tooling and multi-face machined bodies with tight hole grids are established work, using the same capability applied to automation fixtures and precision housings.

• Monthly capacity above 10,000 pieces across the fixture family, with reserved capacity for repeat programmes.
• Typical lead time: 3–7 days for prototypes, 7–14 days for 10–100 pieces, 14–30 days for mass production.
• Programs, probing routines and the approved first article are archived against your part number, so repeat lots start without re-programming.
• CMM grid data and a first-article report ship with every lot, so your setup can be validated before production starts.
• Rush service and scheduled release shipping available for projects with a fixed line-side date.
• Export packaging: base face protected, foam cradles around faces, crate with pallet for LCL and FCL.

5-axis trunnion and horizontal machining center pallets, small-part batch production on tombstones, robotics and automation fixture stations, inspection and CMM fixture bodies, welding and assembly jigs, laser marking and cleaning stations, and custom non-standard multi-face fixture bodies built to customer pallet standards.

Send your pallet or zero-point drawing, per-face layouts and spindle reach, and our engineering team will return a face layout proposal with stiffness notes and a quotation, usually within one to two working days.