Precision – Our Core Competence!
 Core Competence Turning

written by Gabi Olpp on Thursday, July 23, 2020

The keyword is precision. Thanks to our modern machining facilities and vital know-how, we manufacture precise, exactly fitting workpieces.

The world of work at Bucher Hydraulics

At all our locations, Bucher Hydraulics' production is based on highly automated manufacturing cells, all of which are equipped with robots. Wherever possible, the same type of machine tool is used for the various production steps so that, in the event of machine damage, production can continue by using the redundancy that is built into our manufacturing structures.

Our core competences

Turning, milling, grinding, honing, washing and deburring – making high-precision mechanical parts is one of our core competences.

Turning is a metal-cutting production process in which the workpiece is rotated. In our case it is done automatically in machining centres.

Milling refers to the process of removing material from the workpiece by means of a milling machine or an appropriate machining center. In milling, the material is removed by rotating the milling tool around its own axis at high speed while the tool travels along the contour to be produced. Alternatively, the tool rotates at a fixed position while the workpiece is moved as necessary.

Grinding is a metal-cutting manufacturing process for machining surfaces. The advantages of grinding are the good machinability of hard workpieces and the high shape-accuracy.

Honing is used where high accuracy in both dimension and shape is required. This machining process attains a very high dimensional accuracy – a diametral tolerance of ± 0.0005 mm (± 0.5 µm) – and low surface roughness. Honing is the process with which we put the “finishing touches” to drilled holes.

Absolutely clean, even with the most complicated geometries

We carry out washing and deburring fully automatically and in one step. We achieve flawless technical cleanliness with water-jet deburring and ultrasonic washing.

Only when components are free of burrs and chips can we guarantee reliable hydraulic functions. 

Water-jet deburring

During the manufacturing process, machining operations produce burrs on both the outer and inner contours of the workpiece. When 'flake burrs' become loose and detach themselves during subsequent use of the product, the result can be considerable damage to the component or hydraulic system. Particularly in the hydraulic sector, there are always workpieces that can only be 'finished off' by using this special process, for example, when holes cross each other or very small openings are involved. For this reason all burrs must be removed using a highly dependable process.

In water-jet deburring, a targeted jet of water at a pressure of several hundred bar is directed at the workpiece area to be treated. In this way, the jet exerts the force required to smooth the respective component or remove the burr. This also applies to complex workpiece geometries, interrupted cuts and almost-inaccessible locations.

Before/after comparison - on the left side the component before and on the right side after water-jet deburring.

Ultrasonic washing

Above a frequency of 20 kHz, sound is known as ultrasound and is above the limit of human hearing. This ultrasound can also be used to clean components. In this process, the item to be cleaned is completely submerged in a liquid that acts as a transmission medium for the sound. The ultrasound acts directly on the structure. The substances that are to be removed are knocked out of the structure mechanically, so to speak.

Precision down to the size of a microparticle

A high degree of precision in the manufacturing area contributes significantly to the high quality of the end product. This quality can be demonstrated, for example, by very low leakage values.

 Size comparison of smallest particles

A microparticle is twenty times smaller than a particle of flour (10 µm). In our manufacturing processes today, we attain a very high dimensional accuracy in the range of ± 0.0005 mm.

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