AMROK CNC Tombstones & Plates

Tombstones To Your Specifications

Cast iron, aluminum, steel and epoxy-mineral
Plain face, standard grid patterns or machined to your specifications

Overview

Custom Made

All AMROK Tombstones and Grid Plates are custom made to your specifications and are available with:

Standard grid patterns on 2.0000” spacing using hardened threaded inserts and bushings
Custom holes or hole patterns including Tee-slots or any other locating/fastening systms
Plain faces (no holes)
Material of your choice - Cast iron, Aluminum, Steel or Epoxy-Mineral
Wide range of standard catalog sizes available with “special” sizes upon request (most of what we do, other companies would regard as “special”)

We well make to your specification: cube tombstones, single-angle and double-angle tombstones, cross-column tombstones, window frame tombstones, octagon tombstones, hexagon tombstones, triangle tombstones, Y tombstones, risers, consoles, angle-blocks, and plates.

AMROK Tombstones and Grid Plates are designed to either a “Standard” or a “Precision” tolerance. The Precision Tolerance is designed to be the industry’s tightest tolerance for flatness, parallelism, perpendicularity, surface finish and hole location. All Tombstones / Grid Plates are built, and then inspected using AME’s in-house Co-ordinate Measuring Machines to verify compliance to specification.

Locating of Tombstones and Grid plates to your machine tool is accomplished by precision hardened and ground wear pads, milled edge locating, center locating, locating keys or any other mounting configuration you may require.

See the Catalog tab above for more information.

Configure a Tombstone or Grid Plate that meets your needs by calling our Workholding Sales Associates at 815-962-6076.

Information on Epoxy-mineral tombstones is available here.

Ordering Guide

Please specify these 5 items when ordering:

1. Part Number (unless you need a special configuration)

2. After each part number specify

"C" (casting only)
"BO" (base machined only with mounting holes and locating description and overall height finish with lift holes)
"BS" (plain machining complete)
"D" (dedicated machining)

3. Material: Cast Iron, Aluminum, or Steel

4. Quality: Standard or Precision

5. Machining Specification

All tombstones are made to fit your machining center either by edge locating or with hardened and ground wear pads, center locating, or just plain mounting holes to your specifications.

We can provide plain faces, hole grid patterns with precision bushings and threaded inserts, precision T-slots, or any machining to your specifications. All configurations are available in standard or precision. All tombstones and plates are stress relieved. We also specialize in hydraulic/pneumatic or manual dedicated fixturing. We at Advanced Machine & Engineering have a complete team of engineers to design and build whatever type of fixture you might need.

Approval drawings are provided before manufacturing. CMM report is available upon request.

Tolerances	Standard	Precision
Flatness (Tombstones & Plates)	.0005/12x12	.0005/12x12
Parallelism (Tombstones)	.001/12	.0005/12 Min. .001, Max. .002/48
Parallelism (Plates)	.0005/12 Max. .002 Total	.0005/12 Max. .002 Total
Perpendicularity	.001/12	.0008/12 Min. .001, Max. .002/48
Surface Finish	63 RMS	63 RMS
Face Thickness	“≤30”” = ±.002, >30”” = ±.003”	“≤18”” = ±.001, >18”” = ±.002”
Tapped Holes (non accumulative)	±.005	±.005
Bore Diameter	-0 H8 +.001	-0 H7 +.0007
Precision Bushing I.D.	- 0 H6 + .0004	- 0 H6 +.0004
Precision Bushing Concentricity	0.0001	0.0001
Bored or Precision Bushing Hole to Adjacent Hole	±.0005	±.0005
First Row Bushing Hole Location from Datums	±.002	±.001
Bored or Precision Bushing Hole Spacing (non accumulative)	0-20 ±.0015 20-30 ±.002 30-40 ±.0025	0-20 ±.0005 20-30 ±.0008 30-40 ±.001