Tooling & Workholding

Workholding

Workholding refers to any device that is used to a secure a workpiece and hold it in place against the forces of machining. The most basic workholding device is a simple clamp that is screwed into place on a machining center’s table, but workholding can also involve complex fixtures that are custom-built for particular parts. Other common workholding devices include vises and chucks, as well as indexers or rotary tables that are able to change the part’s position while it is held, so the machine can reach various features of the part without the setup having to be changed. In most machining applications, workholding also locates the part. In turning, for example, a chuck not only holds the part securely but also holds it precisely on the centerline of the spindle. On a machining center, the vise or fixture that holds the part may also hold it in the precise position and orientation where the machining program expects to find it. For this reason, components such as locating pins and workstops that make it easy to place piece after piece in the same location are also common workholding components.

Machine Tool Database

Search and find specs for these machines.

New Products
Find Suppliers

Featured Zone Content

The Case for Custom Fixturing


Photos of custom fixtures illustrate the types of applications that call for non-standard workholding.

Small Engine Precision Fuels Fifth-Axis Production Workholding Concept


The challenge holding tight tolerances for its billet RC helicopter engine components drove this company to develop an innovative fifth-axis tombstone device to complete multiple parts on an HMC in one setup.

Get That Part off the Table


Vertical machining centers with simultaneous five-axis machining capability have become popular in recent years.

Incremental Automation


This machine tool supplier sees shops searching for just a little bit of unattended capacity. Many shops are closer to obtaining this extra capacity than they realize.



Workholding

The Collet is the Answer

By: Chris Felix
A small workholding change helped this shop deliver the required part finish by resolving vibration and runout issues.

Automated Cells & Equipment WS8100 Workstocker

Updated Part-Storage System Increases Productivity, Efficiency

By: Katie Cattell
Automated Cells & Equipment introduces the latest version of its WS8100 Workstocker

Tombstone City Joins Partners in Thinc

By: Jedd Cole
Tombstone City will be featured on Okuma machining centers at IMTS.

TrunnionTable.com Stallion Hybrid

Trunnion Increases Productivity

By: Katie Cattell
The new Stallion Hybrid trunnions from TrunnionTable.com enable faceplates and chucks to be installed without removal of the trunnion table for faster part setups, increased productivity and higher-quality parts.

CNC Indexing & Feeding Technologies and TJR Precision Technology

Rotary, Tilt Rotary Tables Offered

By: Katie Cattell
CNC Indexing & Feeding Technologies announces its new partnership with TJR Precision Technology from Taiwan.


Self centering vise is a cost effective and universal workholding method for five sided machining.
MMS ONLINE
Channel Partners

Techspex