Variable tools and optimal glamping- is better with Schlenker

Variable tools and optimal glamping- is better with Schlenker

Schlenker emergency collets – suitable for each situation

The production with the highly experienced in-house specialists makes Schlenker clamping tools enormously fast, flexible and allows manufacturing at the highest quality level. This enables the company to produce collets in a wide variety of designs that can be individually adapted to the workpiece.

Collets are used in the main spindle as well as sub spindle in different types of machines, such as turning machines, sliding headstock automatic lathes, multi-spindle machines etc.

If there is a very urgent customer order and no collet with a contour or an intermediate dimension is available, the Schlenker emergency collet is suitable for this purpose. The main use of an emergency collet is in the sub spindle for gripping the workpieces.

Two options: Soft or tempered at the head

The emergency collet in soft design is not hardened and can therefore just be used for the production of prototypes, samples and one-off productions.

The newest emergency collet version is hardened, already slotted and widened. The head of the emergency collet is tempered so that the clamping bore can still be turned out by the user himself. It is suitable for workpiece clamping in small to medium series production.

To turn out the bore of the emergency collet, the supplied cylindrical pins must be installed in the slots first. In the next step, the emergency collet can be turned out to the required diameter directly on the machine or clamped with a clamping unit. After this process, the cylindrical pins must be removed from the slots again. The collet is ready for use, when it is carefully deburred respectively cleaned.

Clamp correct – use Schlenker clamping tools

The right tools are one thing, but how can the tool be clamped correctly to get the best result? The following examples show, how to get optimum clamping results and what should be prevented when clamping the workpieces.

To clamp for example a workpiece with Ø10.0 mm, a collet with Ø10.0 mm should be used so the workpiece can be clamped form-fit and cylindrically.

Avoid inappropriate clamping

In case that the workpiece has a smaller diameter than the collet, as for example example Ø9.9 mm, a punctual ring clamping occurs in the front area of the clamping surface. This means that form-fitting and cylindrical clamping is not possible. The resulting consequences would be process uncertainties, errors in runout, tumbling or variations in the length of the workpiece.

If the workpiece has a Ø10.1 mm, the collet cannot close into its initial geometry. This results a punctual ring clamping in the rear area of the clamping surface. The consequences would also be process uncertainties, errors in runout, tumbling or variations in the length of the workpiece.

It is also important to avoid unloaded clamping of collets, as this shortens the service life of the collet enormously. Furthermore, incorrect clamping can cause damage to the collet or the workpiece.

The Schlenker Team offers mentoring and help in all questions about clamping tools and correct clamping.

More about Schlenker clamping tools:

Since its foundation in 1952 by Hans Schlenker, the Schlenker company has fully specialized in the production of high-quality clamping tools.

The focus on the customer as well as uncompromisingly high quality runs like a red thread through the more than 70 years company history of Schlenker.

Schlenker is regarded as a technological leader on the market for clamping tools and is continuously expanding its business with customer-specific and innovative product solutions.

Schlenker Spannwerkzeuge GmbH & Co. KG
Britta Hoffmann
In der Lache 20
78056 Villingen-Schwenningen
07720 99 44 0