Precision Engineering

Precision Parts according to your requirements

We distinguish ourselves for the complete machining of single- small series, made in Germany under the highest quality require- ments. In addition to the classic grinding processes such as fine grinding, surface grinding, face grinding, polishing and deburring by means of vibratory grinding, our surface finishing technologies also include lapping, which offers the most precise machining possibilities and represents our core competence. Our strength lies in the complete solution. We manufacture your high precision products from saw cutting to finish machining in the 0.0001 mm range with quality control

Our precision technologies

Lapping is one of the most accurate and finest processes. We offer a variety of lapping processes, such as diamond lapping, 2-disc lapping with the respective tolerances and surface roughness to be achieved.

Due to the large vertical range of manufacture, we have the accuracy in our hands right from the start.

Lapping

2-disc and 1-disc lapping as well as hand lapping.

Lapping is one of the most demanding techniques in surface processing and meets the highest requirements for dimensional and form tolerances, as well as surface quality. With over 70 years of experience in this field, we are able to meet the high demands on the quality of your products with different lapping processes.

From single parts to series production, we machine smallest to medium-sized workpieces made of:

Steel soft or hardened, tempered, hardened stainless steel (V2A, V4A, Inox)
carbide
non-ferrous metals (aluminum, brass, copper)
ceramics (AlO2, ZrO2)

Depending on the lapping process and the material of the components, the following characteristics can be realized:

matt surfaces up to component size Ø 400 mm
shiny surfaces up to component size Ø 165 mm
roughness between Rz5.5 and 0.1
flatness and parallelism up to 0.05 µm

Our lapping processes include:

diamond lapping
corundum lapping
hand lapping

Hand Lapping

Hand lapping is one of the most complex processing methods. Very complex components that cannot be machined due to small quantities or special geometries are lapped by hand to the specified angles and tolerances.

Surface Grinding

Surface Grinding has been one of our core competencies for years, so we can draw on many years of experience

With our Precision Grinding Machines we are able to grind in the µm range

Machining options for surface grinding:

maximum machining size 1,200 x 500 x 600 mm
single part as well as small batch production
machining up to less than 5µm dimensional accuracy and roughness depths of max. Ra 0.05/ Rz 0.3 depending on component size

We manufacture and machine smallest to medium sized workpieces in:

steel soft, hardened and tempered, stainless steel (V2A, V4A, Inox)
carbide
non-ferrous metals (aluminum, brass, copper)
ceramics (AlO2, ZrO2)

Rough Grinding

With the rough grinding method, higher material removal rates and a surface finish of Rz 6.4 can be realized. The largest component size to be machined is 2.000 x 200 x 150 mm and 1.000 x 250 x 150 mm.

Milling

With our CNC 3-axis machines we are able to produce components in single part and small batch production in different materials up to a component size of 1.600 x 600 x 700 mm.

Slide Grinding

This process is a slide grinding processes and a deburring technique using special grinding stones for:

deburring
rounding of edges
smoothing of surfaces
cleaning

Quality Inspection

Quality control is an important part for us to ensure that tolerances are met.

We are equipped with numerous measuring instruments to control the high quality standards during the production process

Get in contact with us.

Tobias Waidmann
Tel.: +49 6021/3463-16
tobias.waidmann@koba.de

our services

We offer our customers the inspection of the following gauges and measuring equipment:

Thread Gauges (according to national and international standards), Snap Gauges, Micrometers, Plug Gauges, Calipers, Ring Gauges, Height Calipers, Setting Gauges, Dial Gauges, Spline Gauges, Dial Calipers, Special gauges, etc.