Workholding devices are often overlooked when determining the essentials of an efficient manufacturing process. Most people prioritize acquiring quality machines and excellent cutting tools, forgetting that how a part is held determines how it is cut. That said, the TE-CO clamping kit is a blessing in disguise. The kit comprises 52 pieces that allow you to perform end-to-end clamping without purchasing an extra tool.
However, there is much to look into when choosing appropriate workholding tools. This article will highlight factors to consider when selecting a workholding tool that will help you achieve accuracy and efficiency.
Part Size
Stability and access are critical determiners of an excellent workholding device. But to balance the two, you must consider the size of the part that needs to be held. For example, a large fixture can provide a firm holding but face access limitations and vice versa.
However, if the part is too small for your fixture, you can consider palletizing several parts. And if the part is too big, on the other hand, consider upgrades or add custom pieces where possible.
Part Shape
In the case of the part shape, you should consider if the part is round or has flat sides (prismatic). For prismatic parts, a vise will be fine. But in the case of round parts, you must consider a workholding device that can hold onto the outer or inner diameter of the part. You may need a lathe chuck, collet chuck, or V-blocks.
Number of Axes
If your parts are colorful, they will need matching axes, thus introducing a new set of considerations when selecting workholding tools. If your part has five axes, for example, you will need workholding devices that ensure secure movement without the risk of crashing the machine.
Production & Mix Levels
Whether you need a faster workholding device or not will be determined by the frequency and complexity of your production. Generally, production frequency is directly proportional to part changeover. As a result, you should always consider how much time a workholding device will need to locate and clamp the targeted part.
If your workholding device is inefficient regarding the time taken to locate and clamp a part, it is worth considering a change. Don’t wait until its setup cost takes almost 25% of a part manufacturing cost.
Level of Operator Interaction with Workholding
Here, your workholding device automation level determines how it interacts with the workpiece. Workholding automation refers to its ability to clamp and unclamp the part repeatedly and accurately with the help of hydraulics. There are three levels of automation to consider when selecting workholding tools
- Fully manual
- Partially manual
- Fully automated
Determining the level of automation when selecting workholding tools helps you determine who will handle it and their experience level.
Options & Accessories
If you are handling a specific job with unique demand, you may have to look beyond the co-clamping kit. In most cases, the job dictates what workholding tool must be acquired.
Choosing the appropriate workholding device is as essential as purchasing quality machines and proper cutting tools. The efficiency of your manufacturing process depends on the efficiency of the three.
