Workpiece clamping chuck for turning applications PLD

grindingpull-backquick-change

Product Overview
The Pitch Line (PLD) Diaphragm Chuck is a high-precision universal-application diaphragm chuck aimed primarily at gear families. It is designed for hard turning and grinding operations where repeatability, interchangeability and roundness are critical. The design centers on a simple quick-change system: a fixed-length pin locates against the master jaw of the diaphragm and extends the distance to the pitch diameter. The pin is housed in a jaw that orients the unit and contains the Quick Change snap-in-place housing with a retained screw. Replacement of worn pin sets is accomplished by sliding out the old pins and inserting new ones with no adjustment required.

Advantages

• Jaw change in 60 seconds
• Accommodates any number of gear teeth
• Compliance for tooth space variation
• Optional synchronizing pins for autoload
• Standard “pull-back” action
• Centrifugal force compensation for higher speeds
• Minimal maintenance - no sliding parts
• Lightweight assembly

Technical Features

• Fixed-length gear pins extend from the pitch diameter of the gear to the master jaw diameter of the diaphragm; pins extend through the jaws so interchange accuracy of the jaws is not critical
• 1/2 turn retained screws
• Gear pins are retained firmly in jaws with O-ring (not shown)
• Gear pins are replaced by simply pulling the old pins out and sliding new pins into the jaws; no adjustment required
• Fixed-length gear pins uniform in length within .0002" contact on the pitch diameter (P.D.) of the gear

Applications

• Gear families including:
  • Sun
  • Ring
  • Piston
  • Output
  • Spur
  • Helical gears
• Hard turning and grinding applications

Pitch Line Brochure
Pitch Line product brochure is available for more detailed product information and specifications.

Technical specifications

• Model: Pitch Line (PLD) diaphragm chuck
• Quick-change fixed-length gear pins locate to pitch diameter
• Jaw change in 60 seconds
• 1/2 turn retained screws
• Gear pins retained with O-ring
• Pin replacement: simple slide-in/slide-out, no adjustment required
• Fixed-length pins uniform within .0002" on P.D. contact
• Centrifugal force compensation allows higher spindle speeds
• Standard pull-back action
• Optional synchronizing pins for autoload systems
• Minimal maintenance; no sliding parts
• Lightweight assembly suitable for gear families and hard turning/grinding