Dressing tools - Import export

In the WTH 200.2, the following materials can be reliably brazed with active materials in a high vacuum. PCD (polycrystalline diamond) MKD (monocrystalline diamond) CVD diamond (chemical vapour deposition) PCBN (cubic boron nitride) and Hard metals as well Ceramics In the high-vacuum furnace WTH 200.2, our customers manufacture indexable inserts, dressing wheels, rotating tools and turning tools with blades made of natural diamond or MKD for polish turning. The vacuum brazing is flux-free. In the so-called active brazing process, titanium allows wetting of the surfaces. While cemented hard metals can also be inductively brazed, diamonds, CVD and ceramics must be actively brazed in a vacuum. When brazing PCD and PCBN, not only the hard metal substrate but also the PCD or PCBN layers are wetted.

The smartLine covers the entire spectrum of travelling table grinding machines. From simple reciprocation surface grinding through speed-stroke, slot and profile grinding all the way to creep-feed grinding. This machine concept solves every grinding task. The machine‘s versatile building block system is designed to allow almost any combination in table drive systems from belt drive to ball screw system in combination with table mounted and overhead dressing units to solve your specific grinding task. The Kombi-version of the smartLine allows individual configurations all the way up to a complex creep-feed grinding machine. Grinding width, grinding height, type of drive and spindle power as well as all variations of dressing units from simple table-mounted dressing diamond to CD-grinding with a headmounted roll dressing unit as well as an automatic tool changer for grinding wheels and dressing tools can be selected to meet specific requirements.

Discontinuous profile grinding is usually used for smaller lot size production and also for bigger gears. Therefore KAPP delivers sintered diamond form rolls which can be in an economic version with natural diamond or in a long life version with handset CVD diamond sticks. These rolls can be reground several times and exhibit a high tool life.

Continuous generating grinding is one of the most productive technologies to grind high precision gear tooth flanks. KAPP manufactures dressing tools in positive and negative electroplated version. Highest flexibility can be achieved with form rolls for topological dressing. For the so called “flexible dressing” the tools are designed to dress worms for different workpieces with one tool, while the tip of the worm is dressed separately. For serial production there are profile rolls with integrated tip dresser in a workpiece specific manner also for grinding of well defined gear root area. Most productive for high volume are multi-ribbed diamond profile rolls made in a negative electroplating process.

Beside the non-dressable CBN grinding tools, dressable grinding tools of leading manufacturers can be used on our machines, too. Vitrified bond aluminium oxide tools are dominant. Sintered aluminium oxide is preferred as the grinding tool for grinding of steel due to its resilience and grinding capability. Gray cast-iron can also be processed with normal aluminium oxide. The profiling of the grinding tools takes place via a machine-integrated CNC dressing unit. A diamond-plated, rotating dressing tool profiles the wheel in accordance with the respective gear parameters. The grinding tool is conditioned specifically for rough or finish grinding by selecting respective technological dressing parameters. Form consistency and cutting capacity of the grinding wheel is assured by repeated dressings, dependent on pre-defined stock removal rates. The automatic balancing produces smoother turning for larger grinding tools, and consequently, high gear quality. dressable CBN tools Single-layere