Efficient thread cutting in a single operation

A combi machine tap is a versatile tool that performs drilling, tapping and countersinking or deburring in a single operation.

This means that the user does not have to clamp and change tools multiple times, which significantly reduces machining time and increases productivity.

By eliminating the three tool changes of twist drill, tap and countersink, your production process is optimized and labor costs are reduced.

Our newly developed ULTIMATECUT Combi machine tap is made of high-quality HSS (High-Speed Steel) uncoated or with RUKO's own RUnaTEC coating. This choice of material ensures high wear resistance, temperature resistance and a long tool life. HSS is ideally suited for e.g. mild steel and general metalworking with high toughness and resistance to mechanical wear.

The geometry of the combi machine tap is specially designed to cut a clean and precise thread without stressing the workpiece or creating unwanted tension in the material.

1. Time saving: As drilling, tapping and countersinking/deburring are carried out in a single step, the machining time is significantly reduced.
2. Higher precision: The exact alignment of drilling and tapping ensures consistently high thread quality.
3. Cost efficiency: Reduced tool changes mean shorter set-up times and therefore lower personnel and production costs.
4. Surability: High-quality materials such as HSS, especially with RUnaTEC coating, ensure a long service life, even in demanding applications.
5. Versatility: Suitable for various materials such as mild steel, aluminum, non-ferrous metals and hard plastic.
6. Optimized chip evacuation: Special chip chamber geometries ensure efficient chip evacuation, which further increases the tool life.

Learn step by step how to use the combination machine tap correctly and what you should pay attention to in order to achieve optimum results.

1. The right choice of combination machine tap

Before you start working, it is crucial to select the right tap for the material you want to machine and the desired thread size. Take the following factors into account:

Materials: Different materials require different tap types (e.g. HSS or HSSE-Co 5 for harder materials).

Thread type: Our combination machine taps always have an ISO metric thread (M).

Coating: Our RUnaTEC coating can increase tool life and reduce friction.

2. Preparing the drill

Clamping the tool: Make sure that the combination machine tap is securely fixed in the drill chuck. With the bit holder (¼-inch hex shank) with its six surfaces, you have optimum power transmission without slipping in the drill chuck. Of course, you can also use a bit holder. This enables quick and easy tool changes. The combination machine tap is also ideal for a hand drill with a direct mount.

Speed and feed: Sensitivity is required here, especially in the hand drill. The speed must be adapted to the material and thread size. Too high a speed can destroy the thread, while too low a speed leads to unclean results.

Lubrication: Use cutting oil or spray to reduce friction and increase the service life of the tool.

3. The work process: drilling, cutting and countersinking

The combination machine tap combines three work steps in one tool:

Drilling: The first section of the tool serves as a twist drill and creates the core hole for the thread. Here you can use a high speed to cut the drill hole.

Tapping: The second stage of the tool forms the internal thread. Here you need to downshift and reduce the speed.

Countersinking: The last section removes the burr that has formed.

Return: Set your hand drill to anticlockwise rotation and guide the combination machine tap out of your cut thread. This cleans the thread. Make sure that you guide the hand drill straight and do not misjudge it.

Tip: Work at a constant feed rate and avoid jerky movements to prevent the tool from breaking.

4. Inspection and post-processing

When you have finished, check the quality of the thread:

Dimensional accuracy: Test the thread with a suitable screw or thread test gauge.

Surface protection: For certain applications, post-treatment such as oiling the thread can be useful to prevent corrosion.

The combination machine tap is an efficient tool that combines three tools and work steps in one. With the right selection, preparation and application, high-quality internal threads can be produced quickly and precisely.

To achieve the best results, make sure you always work at the right speed, with sufficient lubrication or cooling and secure tool clamping.

If you have any questions or require further information on our combination machine taps, please contact us - we will be happy to advise you.