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ID Diaphragm Chuck

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This chuck is a 9 inch, 6-jaw I.D. diaphragm chuck. Our customer needed a way to perform an audit on their production ring gears they were machining. This chuck was used and developed to hold on the I.D. of the ring gear so various dimensions could be checked.

This chuck had to repeat within .0002 in order to assure proper readings from the audit machine. There were (2) different sized ring gears, so all that was necessary for part change over was replacing the (6) top jaws that has (2) bolts per jaw to hold it in place. Even with part change over, the chuck repeated within .0002.

Custom Diaphragm Chucks · Diaphragm Chuck Capabilities · Competetive Advantages & Strengths

Custom Diaphragm Chucks

Ideal for high precision turning, grinding, milling, boring, hard turning, inspection

One piece construction allows for clamping on O.D., I.D., or pitch-line, thin-walled parts: No metal-on-metal moving parts, causing no wear for long-life

Ensures flexibility to engineers or tool designers

Will mount in existing machine envelope (jaw height, locator, and jaw inserts identical)

3, 4 or 6 jaw standard designs, or custom designs available

Uniform, variable clamping forces provide a rigid design without part distortion

Diaphragm Chuck Capabilities

Sealed Design		• One piece construction eliminates contaminants and costly down time • Maintenance free, no lubrication required

Pull-Down		Pulls work piece tight against part stop

Versatility		• Quick change jaws allows for quick turnover • No grinding necessary on replacement jaws – part turnover within minutes, not hours • Accommodates different sizes using a single diaphragm

Actuation		• Air actuation or push-pull clamping • Uniform clamping pressures

TIR		• Repeatability of less than .0002 • Quick change jaws do not affect TIR

Competetive Advantages & Strengths

Long term ownership (33 years)
(3) graduate engineers: Multiple employees with each having 25+ years dedication to Skill-Craft
Knowledgeable with both Skill-Craft and non Skill-Craft workholding products: Continuous improvement achieved by transferring this knowledge to own custom designs
Repair both Skill-Craft and non Skill-Craft chucks to achieve like new accuracy
Excel in back engineering when no prints are available
High Powered Expertise/Low Cost Business Structure
Latest Automated Design and Manufacturing Technology (CAD, FEA, CAM, CNC)
Precision/stability/repeatability (20-50 millionths) at high speeds >5000 RPM’s
Collets manufactured to a tolerance of .0001 inch
World class reliability and maintainability
AAA credit rating

ID Diaphragm Chuck

Sealed Design

Pull-Down

Versatility

Actuation

TIR