Apparatus for checking dimensional and geometrical features of pins

An apparatus for checking dimensional and geometrical features of a pin, rotating about a geometrical axis of rotation, comprising

• a Vee-shaped device that defines rest and reference surfaces adapted for cooperating with the pin to be checked,
• a measuring device, coupled to the Vee-shaped device and including a feeler for contacting the surface of the pin to be checked and performing linear displacements along a measurement direction laying between said rest and reference surfaces of the Vee-shaped device, and
• a support device for supporting the Vee-shaped device and the measuring device, the support device including
• a stationary support element, and
• a coupling mechanism with coupling elements coupled in a movable way to the stationary support element and carrying the Vee-shaped device, and constraining elements adapted for enabling substantially plain translation displacements of the Vee-shaped device with respect to the stationary support element, said coupling elements and constraining elements defining two support sections coupled in series, wherein said coupling elements and constraining elements define a parallelogram structure and an additional parallelogram structure with axes of rotation parallel to said geometrical axis of rotation.

An apparatus for checking dimensional and geometrical features of a pin, rotating about a geometrical axis of rotation, comprising

• a Vee-shaped device that defines rest and reference surfaces adapted for cooperating with the pin to be checked,
• a measuring device, coupled to the Vee-shaped device and including a feeler for contacting the surface of the pin to be checked and performing linear displacements along a measurement direction laying between said rest and reference surfaces of the Vee-shaped device, and
• a support device for supporting the Vee-shaped device and the measuring device, the support device including
• a stationary support element, and
• a coupling mechanism with coupling elements coupled in a movable way to the stationary support element and carrying the Vee-shaped device, and constraining elements adapted for enabling substantially plain translation displacements of the Vee-shaped device with respect to the stationary support element, said coupling elements and constraining elements defining two support sections coupled in series, wherein the constraining elements include pulleys and belts, each of said support sections including a rotating coupling element, a couple of said pulleys and one of said belts.

An apparatus for checking dimensional and geometrical features of a pin, rotating about a geometrical axis of rotation, comprising

• a Vee-shaped device adapted for cooperating with the pin to be checked,
• a measuring device, coupled to the Vee-shaped device and including a feeler for contacting the surface of the pin to be checked and performing linear displacements along a measurement direction, and
• a support device for supporting the Vee-shaped device and the measuring device, the support device including
• a stationary support element, and
• a coupling mechanism with coupling elements coupled in a movable way to the stationary support element and carrying the Vee-shaped device, wherein said coupling mechanism defines two support sections coupled in series adapted for enabling substantially plain translation displacements of the Vee-shaped device with respect to the stationary support element, each of said support sections including a parallelogram structure with four axes of rotation parallel to said geometrical axis of rotation.

An apparatus for checking dimensional and geometrical features of a pin, orbitally rotating about a geometrical axis of rotation, comprising

• a Vee-shaped device adapted for cooperating with the orbitally rotating pin to be checked,
• a measuring device, coupled to the Vee-shaped device and including a feeler for contacting the surface of the pin to be checked and performing linear displacements along a measurement direction, and
• a support device for supporting the Vee-shaped device and the measuring device, the support device including
• a stationary support element, and
• a coupling mechanism carrying the Vee-shaped device and defining two support sections coupled in series and including coupling elements coupled in a movable way to the stationary support element,
• wherein said coupling mechanism is adapted for enabling substantially plain translation displacements of the Vee-shaped device, cooperating with the orbitally rotating pin, with respect to the stationary support element, at least one of said support sections including a parallelogram structure with four axes of rotation parallel to said geometrical axis of rotation.