What is a Cable Core Punching Press? Work, Uses, and Benefits

• cablemeasurement
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• Posted on March 18, 2025April 7, 2025

If you are a cable manufacturer, you must be aware about the significance of finding the minimum thickness. In order to find the minimum thickness, we are required to have cable slices. These cable slices are then measured on the digital analyzers or profile projectors that can help locate the minimum thickness.

However, the issue is that most of the manufacturers are not able to accuratelyy measure the minimum thickness. Likewise, before ascertaining the minimum thickness, it is absolutely crucial to have precisely cut cable slices.

To explain in layman terms, in order to inspect cables, insulation thickness measurement, slicing and tensile testing are required. To proceed ahead for any of the tests, the core of the cable is required to be removed so that the efficiency in any of the above tests can be obtained.

Thus, this brings into the action the need of a punching tool for the easy removal of copper wire from the core of the cable.

What is a core punching machine?

This device is a specialised machinery designed to remove metal wire cores without causing any harm to the insulating layer. It is the equipment that supports sample preparation for the structural size detection of the cross section of cable insulation and the thickness detection of the conductor shielding. To finish the core punching operation, this equipment uses an electric mode that is simple to use and safe. Though there are manual punching press in the market, an automated one outshines the former in delivering the uniform and precise results.

How does it work?

The process of core punching can be clearly divided into three steps:

• Preparation:

First of all, the cable sample is taken and is prepared by stripping away the outer insulation or any other protective layers to expose the core.

• Punching:

Using a core punching machine or tool, a steel rod’s pressure is exerted onto the cable sample that removes the inner conductor.

• Post-punching:

After the punch, the cable can be further processed for slicing, chipping and various other inspection requirements.

Uses of Cable Core Punching Press

1. Measure minimum thickness:

To ascertain the sheathing, it is important to decipher the minimum thickness under the digital analyser from 1000s of points. This can be done only if the samples are uniform and precisely cut.

• Cable Slicing/ Cable O-rings:

Cable O-rings would be accurate only if the inner insulation has been removed. An essential component of quality control in the production of the cables, it is quite crucial to careful slice cables prior to defining measurements.

• Inspection and testing:

Creating the accessible points can help carry out the inspection and testing of the internal to check whether they are in good condition or not.

Pitfalls of not using a Cable Core Punching Machine

Pitfalls of not using a Cable Core Punching Machine

Benefits of Cable Core Punching Machine

1. Zero physical strain:

Certainly clear, with the usage of core punching machine it is true that operator doesn’t need to exert any physical force on the equipment. it is entirely automated and the rod cuts into the core of the wire by delivering a uniform force on the sample. 

• No chance of tampered sample:

Since the pressure exerted is uniform, there are no chances of the sample being mishandled or tampered. Studies have shown that manual core punching disfigure the specimen for further testing which can hamper the results

• Damage to insulation

Failing to carefully punch through the necessary parts of the cable can damage the insulation material thereby leading to distorted results. On the other hand, the application of uniform pressure provides predictable and reliable results, enhancing the overall reliability of the cable.

• Proper tool selection

Using incorrect or poorly maintained punching tools can damage the cable, create irregular holes, affecting the cable’s performance. In comparison, Core punching machines provide precise and consistent holes in cable insulation, ensuring uniformity and quality.

To summarise, undoubtedly the conventional options have been prevailing in the industry for years yet with the demand of the time for precision and accuracy, it is the need of the hour to bring a shift with the latest methods that can guarantee success in terms of defined results. Experience the change with the Cable Measurement cable core punching machine; a device that can revolutionise your cable processing with speed and precision.