24-12-2012, 04:11 PM
GAUGE & CHECK FIXTURE STANDARD
1GAUGE & CHECK FIXTURE.pdf (Size: 922.86 KB / Downloads: 135)
Introduction
The intent of this standard is to specify AZ Automotive Corp.’s requirements for the design, build,
certification and approval of gauges/check fixtures. This is not an all inclusive listing. OEM-customer
standards will also apply to gauges / check fixtures for end item parts. In the event of a conflict between
OEM-customer standards and this standard, the OEM-customer standard will apply for end item parts.
Gauges/check fixtures are a vital element of our quality management system. They are used to confirm
dimensional conformance of parts and assemblies and to facilitate effective process control. Every
consideration must be given to assure they meet the following fundamental requirements:
• Accessible features which allow the user to readily check all specified part features in a reasonable
amount of time, without undue effort.
• Accurate and durable locating points (datum surfaces/pins) and part holding features to attain minimum
repeatability and reproducibility error.
• Workmanship and construction to a standard that ensures durability and stability for continued use in a
plant environment for the life of the part.
This AZ Automotive Standard shall be adhered to for all gauges/check fixtures.
Deviation from this standard requires written authorization from the Vice President of Quality Assurance.
Design approval shall not constitute a waiver or guarantee of responsibility for any gauge purchased by AZ
Automotive Corp. An approved gauge design does not constitute a certified or an approved gauge.
It is the sole responsibility of the gauge/check fixture construction source to assure that the revision of
specification information provided (part drawings, math data, CAD etc.) matches the part number and
revision level indicated by the AZ Automotive Corp. Purchase Order. AZ Automotive Corp’s Purchasing
Department will be immediately informed of any differences. Gauges/check fixtures shall not be built or
modified to a level beyond which a written Purchase Order exists and defines.
DESIGN
1. Gauge and Fixture design approval is required by AZ Manufacturing Engineering and Quality prior to
build. This approval will be in the form of signatures on the Fixture Design Sign Off Sheet QP-3.
2. All designs are the property of AZ Automotive Corp. A copy of the design will be provided
following design approval. (Preferred format: CAD file on disk)
3. When clamps and/or swing templates are used, the base must protect and contain them in the open position.
BUILD
3. Unless otherwise approved, in writing, gauge/fixture will be built “in car position” with X (BL), Y (TL),
and Z (WL) start points stamped into base.
4. Designation points for CMM probe locations will be defined as ½” or 12mm diameter circles stamped into
the base and clearly identified for X (BL), Y (TL), and Z (WL) coordinates.
5. 12.7mm bushings should be used for 3/2/1 alignment and the base start corner machined ½” by 45°
chamfer and painted yellow. Tooling balls may be used under certain circumstances; this requires
approval of the VP of Quality Assurance.