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A zero-turn forklift wheel is held (OP-10 �xture shown) for machining.Seven similar nests were built to locate,clamp, and support the center hub andseven ears. The majority of thehydraulic lines were drilled and manifolded through the �xture components to eliminate external plumbing.

Master WorkHolding, Inc. designs, builds, and implements custom workholding solutions for the

precision machining industries. Here are just a few of the solutions

we have provided for our customers:

This �xture holds a family of pump bodies. The �rstoperation (OP-10) locates and hydraulically clampson the casting perimeter. In the second operation(OP-20), precision hydraulic collets locate andclamp on machined bores from OP-10. The part isalso clamped similarly to OP-10 on the perimeter .Some parts require a third operation (OP-30) forwork done around the perimeter. Solid locators areused, and a hydraulic swing clamp with a custom non-marring clamp pad holds the part on the previously machined surfaces. Each stationrequires some change-out components to allow this�xture to run over 100 di�erent castings. Onemachining cycle will produce four �nished parts.

This �xture holds water line pipe formachining operations. Hydraulic clampswere used in a special sub-assembly,creating pivot clamps that retract toallow for part loading. Precision linearslides lock into position as the operatorsets up the �xture for di�erent sizes of piping.

A V8 engine block is held for cubing operations.Part-retention details keep the casting loadedagainst the datums while the operator actuates theclamps. Hydraulic clamps were used in a specialsub-assembly, creating pivot clamps that retract toallow for part loading. All clamping is underneaththe casting, allowing for minimum tool lengths andmaximum cutter clearance. A combination ofinternal and external plumbing was used to reducechip traps.

Machining of this gear box required a �xture thatwould locate on cast surfaces inside the casting.Rough locators help the operator align the castingwhile loading; then the upper mandrel is pulleddown into a locked position. Special clamp �ngerswere designed to hold the part on points inside thecasting, on both the lower round �ange and upperrectangular �ange.

FOR ADDITIONAL INFORMATION

© Copyright 2007 Master WorkHolding, Inc.

Brochure No. 067 MWH 4-08

Mailing AddressMaster WorkHolding, Inc.P.O. Box 2845Morganton, NC 28680Telephone (828) 437-0011FAX (828) 438-0069www.masterworkholding.com

Shipping AddressMaster WorkHolding, Inc.315 Burke DriveMorganton, NC 28655

Why Do Business with Us?We specialize in custom workholding solutions

Workholding is our business...our only business!

Master WorkHolding…“Advanced Workholding Solutions”

On-time delivery, “works-first-time-out-of-the-box”

Continuous improvement, research, and development

Master WorkHolding, Inc. was founded in 1988 with a commitment to providingcustom �xturing solutions for the production machining industry. Our on-site processevaluation, applications engineering, and after-sales service and support will help you survive and succeed in today’s global market.

From our proven capability with prismatic and rotational �xturing, to our new andrevolutionary Light Activated Adhesive Gripping™ (LAAG™), we can provide the rightworkholding solution to meet your needs.

We o�er a well-de�ned internal process for quoting, designing, building, andimplementing cost-e�ective and high-performance solutions ... an uncompromisingcommitment to on-time delivery ... and a quality reputation second to none.

Our ongoing, companywide emphasis on internal improvement and thedevelopment of better workholding and machining processes will assist you in yourdrive toward manufacturing excellence.