초록 ▼

A method and apparatus for smooth-rolling and deep-rolling the journal pins of multi-crank crankshafts divides the crank pins into two groups, each including alternating crank pins, since the space between neighboring crank pins is insufficient for simultaneously rolling all of the pins including th

A method and apparatus for smooth-rolling and deep-rolling the journal pins of multi-crank crankshafts divides the crank pins into two groups, each including alternating crank pins, since the space between neighboring crank pins is insufficient for simultaneously rolling all of the pins including the main bearing pins in one operation. Each group of crank pins is then rolled separately in succession, whereby one group includes the main bearing pins. Thus, a crankshaft, including any number of closely spaced crank pins, can be completely machined in two rolling operations. In order to carry out this method a rolling apparatus includes crank pin rolling devices for each of the pins of one group. The rolling devices are axially slideably adjustable in unison between two determinable positions in which they may be fixed or locked after adjustment. The crank pin rolling devices are spaced from one another with a sufficient spacing in the axial sliding direction so that at least one crank pin can pass between two adjacent crank pin rolling devices.

대표청구항 ▼

A method for smooth-rolling and deep-rolling a plurality of pins, of a crankshaft, comprising the following steps: a) dividing said plurality of pins to be rolled into at least two groups of pins, b) including in each said group non-neighboring pins so that pins of one group are spaced by pins of th

A method for smooth-rolling and deep-rolling a plurality of pins, of a crankshaft, comprising the following steps: a) dividing said plurality of pins to be rolled into at least two groups of pins, b) including in each said group non-neighboring pins so that pins of one group are spaced by pins of the other group and vice versa, c) rolling all of the pins of one group simultaneously in one rolling operation; and d) rolling successive groups of pins in successive rolling operations.