Welding Fixture PM Check List | Welding Fixture PM Check Sheet

All welding fixtures should be inspected as per PM plan and Welding Fixture PM Check List, and maintain proper maintenance records.

Welding Jig/Fixture Maintenance content includes the following:

• Whether the positioning pin is firm, whether it is bent or deformed, whether the positioning pin wear amount is too large, and whether the diameter of the general positioning pin and workpiece hole is not more than 0.10mm.
• Whether the positioning block is firm or not and whether the positioning surface is worn is not more than 0.2 mm.
• Whether pressure pillars can be reliably pressed, and the head wear is serious. If the head area is too small and the workpiece is pressed out of the pit, it must be grounded or replaced.
• Whether the bolts of the connecting parts are tightened securely or not, and whether the solder joints are fixed at the spot welding are cracked.
• Check whether the chute positioning is reliable and whether it moves freely.
• Whether the components of the pneumatic clamp are damaged, whether the cylinder and the pipeline leak, and whether the clamping mechanism is reliable.
• Whether the marking of welding automobile fixtures is clear.

In addition to copper positioning pins, other steel positioning pins must be heat-treated during replacement to increase wear resistance. Drawings require heat treatment when the heat-treated positioning block is replaced.

Welding Fixture Preventive Maintenance Check Sheet

Welding Jig/Fixture Checkpoints and Control

• Fixture Cleaning
• Locating Pins and Bushes
• Rest Mylar
• Clamp Mylar
• Blocks
• LM Guides
• Filter, Regulator & Lubricator
• Base Plate
• Pneumatic Tubing & Fitting
• Tooling Hole
• Poka-Yoke
• Standard SIM
• Toggle clamps
• Pneumatic Cylinder
• Magnet condition
• Part Inspection and validation

Welding Fixture PM Check List | Control Points

Welding Fixture Preventive Maintenance Checklist | Control points with control standard checking frequency:

Control Point	Control Standard	Checking frequency
Fixture Cleaning	No spatter, Rust, other Contaminants etc.	Daily & Every Three Month
No spatter, Rust, other Contaminants, etc.	Pin diameter and Visual condition for bend, damage	Daily & Every Three Month
Rest & Clamp Mylar	No loose, broken, play and wear out	Every Three month
Blocks	No loose, broken, play and wear out	Every Three month
LM Guides	Easily sliding, and No play and loose	Every Three month
FRL Unit	Should be clean and spatter-free	Every Three month
Base Plate	Locating pins and bushes	Daily & Every Three Month
Pneumatic tubing & fitting	No Cut Spatter, Leakage & Anti spatter Tube	Every Three Month
Tooling Hole	No hole block	Every Three Month
Poka-Yoke	Must be working	Daily & Every Three Month
Standard SIM	Only standard sim used	Every Three Month
Toggle clamps	No play, clamp force, Loose	Daily & Every Three Month
Pneumatic Cylinder	No leakage, no part loose after clamping	Daily & Every Three Month
Magnet Condition	Should be available and working condition	Daily & Every Three Month
Inspection & Validation	As per drawing	Every Three Month
Copper coating spray	Should be available	Every Three Month

Point to remember – Part must be replaced in case of any abnormality found during checking and Checking frequency can be reduced or increased based on production volume.

Critical Spare Parts of Welding Jigs/Fixtures

Location pins	Copper Blocks	Pneumatic pipe
Shims	Connectors	Sensor Sleeve
Mylars	Reed Switches	End caps
Hex-Bolts	Proximity sensors	FRL Units
Dowel	Electrical wirings	Tooling hole covers
L-B01ts	Pneumatic Valves	Cylinder covers
Washers	Cylinders	Hand Lever
V-Guides	Sensor Caps	PU block/Teflon
Stoppers	Sensor Sleeves	Cable ties
Poka-Yoke Pin	Cylinder covers	Knuckle pin
Rough Guide	Push buttons