CBN cylindrical grinding machines

Cylindrical grinding machines with CBN grinding wheels: Benefit from our headstart in experience and knowledge in this area.

Centerless grinding with a "workpiece on the fly”

Centerless grinding involves the work-piece being simultaneously machined and guided on its generated surface. The line contact on a grinding wheel forms the grinding line, the workpiece lies flush with the regulating wheel and is held in place from below by a guide rail. During grinding, the center of the workpiece lowers as its diameter is reduced through abrasion. This causes the work-piece to migrate towards the regulating wheel. JUNKER’s electronic control system compensates for this position change by tracking the grinding wheel so that pre-cise machining is guaranteed at all times. Centerless cylindrical grinding is also the ideal solution for workpieces that are dif-ficult to hold due to their shape or small dimensions.

cylindrical grinding machines

Conventional cylindrical grinding machines A cost effective, flexible machine concept that can handle all grinding tasks.

JUCRANK Pin chasing grinding for each crankshaft

JUCRANK pin chasing grinding machines are the solution for almost all grinding tasks in crankshaft machining. You can grind main bearings (cylindrical, concave, convex) and pin bearings (cylindrical, crowned, concave, and convex) in a single clamping. Even hardened fillets can be ground. Furthermore, JUNKER can provide you with almost any imaginable combination with other grinding processes. Depending on your combination of machines, you can also machine thrust walls, flanges and journals using other JUNKER machines.

JUFLEX 3000 Productivity up, cost down

The interesting alternative for small workpieces Parallel machining of one workpiece with two carriages in the JUNKER grinding machine JUFLEX 3000. For JUFLEX, two modules from the 3000 series are fused together in one machine (machine cell) – two machine bases, two hoods, but only one control system. This results in a substantial cost advantage without any loss of output. The price advantage for the customer compared to using two independent machines is 15-20 %. Another advantage is the considerably smaller required space than when using two independent machines. The output is the same as from two indepedent, individual machines but the investment is smaller. Particularly interesting for the automotive sector JUNKER developed this creative machine concept especially for HSG with CBN but also for conventional grinding of car parts such as crankshafts, camshafts and gearbox parts. The "machine cell" JUFLEX 3000 achieves nearly twice the output in two grinding cycles with two carriages without risk of collision by means of synchronised machining. When using JUFLEX in large series production, this deconcentration particularly offers gains regarding realisable cycle time.

OD High Speed Grinding Machines

OD High Speed Grinding Machines Compared with conventional OD grinding, the QUICKPOINT method can increase productivity by up to 600%.