Rotor fixture

For mounting a rotor on a shaft with an outer peripheral shaft surface, said rotor having a central hole with an inner peripheral hole surface surrounding the outer peripheral shaft surface, a rotor fixture comprising;

• a diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral contracting section surface in the form of a circular arc to be fitted to the peripheral shaft surface,
• a diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral expanding section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral expanding section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said diameter expanding deformation section being disposed coaxially adjacent to one side of said diameter contracting deformation section,
• a bridge section with a fan-shaped cross-section having an inner peripheral bridge section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface and an outer peripheral bridge section surface in the form of a circular arc to be fitted to the inner peripheral hole surface in a position at least facing to said diameter expanding deformation section, said bridge section with the fan-shaped cross-section being disposed between both ends in the circumferential direction of each of said diameter contracting deformation section and diameter expanding deformation section, and
• a squeezing bolt for connecting in the circumferential direction the one end in the circumferential direction of said diameter contracting deformation section with said bridge section,
• wherein said diameter contracting deformation section has a portion near the other end in the circumferential direction and said diameter expanding deformation section has a portion near the one end of said diameter expanding deformation section in the same circumferential direction as the other end, said portions being connected integrally with interposition of a joint section, and
• when said squeezing bolt is screwed, the deformation is restricted in the circumferential direction to said bridge section at the other end in the circumferential direction of said diameter expanding deformation section, whereby the diameter of the inner peripheral surface of said diameter contracting deformation section is contracted and the diameter of the peripheral surface of said diameter expanding deformation section is expanded.

For mounting a rotor on a shaft with an outer peripheral shaft surface, said rotor having a central hole surrounding the outer peripheral shaft surface, a rotor fixture comprising;

• a first diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface,
• a diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said diameter expanding deformation section being disposed coaxially adjacent to the one side of said first diameter contracting deformation section,
• a second diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral surface in the form of a circular arc to be fitted to the outer peripheral surface of said shaft, said second diameter contracting deformation section being disposed coaxially adjacent to said diameter expanding deformation section on the opposite side in the axial direction to said first diameter contracting deformation section,
• a bridge section with a fan-shaped cross-section having an inner peripheral surface in the form of a circular arc to be fitted to the outer peripheral surface of said shaft and an outer peripheral surface in the form of a circular arc to be fitted to the inner peripheral surface of the central hole of said rotor in a position at least facing to said diameter expanding deformation section, said bridge section with the fan-shaped cross-section being disposed between both ends in the circumferential direction of each of said first diameter contracting deformation section, diameter expanding deformation section, and second diameter expanding deformation section, and
• a squeezing bolt for connecting in the circumferential direction the one end in the circumferential direction of said first diameter contracting deformation section with said bridge section,
• wherein the first contracting section has a portion near the other end in the circumferential direction, and the expanding section has a portion in the same circumferential direction as said other end, said portions being connected integrally with interposition of a first joint section,
• the expanding section having a portion near the other end in the circumferential direction, said second diameter contracting deformation section having a portion near one end of said second diameter contracting deformation section in the same circumferential direction as said other end, said portions being integrally connected with interposition of a second joint section, and
• when said squeezing bolt is screwed, the deformation is restricted in the circumferential direction to said bridge section at the other end in the circumferential direction of said second diameter contracting deformation section, whereby the diameters of the inner peripheral surfaces in the form of a circular arc of respective said first diameter contracting deformation section and second diameter contracting deformation section are contracted, and the diameter of the outer peripheral surface in the form of a circular arc of said diameter expanding deformation section is expanded.

For mounting a rotor on a shaft with an outer peripheral shaft surface, said rotor having a central hole surrounding the outer peripheral shaft surface, a rotor fixture comprising;

• a first diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral surface in the form of a circular arc to be fitted to the outer peripheral shaft surface,
• a first diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said diameter expanding deformation section being disposed coaxially adjacent to one side of said first diameter contracting deformation section,
• a second diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface, said second diameter contracting deformation section being disposed coaxially adjacent to said first diameter expanding deformation section on the opposite side in the axial direction to said first diameter contracting deformation section,
• a second diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said second diameter expanding deformation section with the fan-shaped cross-section being disposed coaxially adjacent to said second diameter contracting deformation section on the opposite side in the axial direction to said first diameter expanding deformation section,
• a bridge section with a fan-shaped cross-section having an inner peripheral surface in the form of a circular arc to be fitted to the outer peripheral shaft surface and an outer peripheral bridge surface in the form of a circular arc to be fitted to the inner peripheral hole surface in a position at least facing to said first diameter expanding deformation section and second diameter expanding deformation section, said bridge section with the fan-shaped cross-section being disposed between both ends in the circumferential direction of each of said first diameter contracting deformation section, first diameter expanding deformation section, second diameter contracting deformation section, and second diameter expanding deformation section, and
• a squeezing bolt for connecting in the circumferential direction the one end in the circumferential direction of said first diameter contraction deformation section with said bridge section,
• wherein a first portion near the other end in the circumferential direction of said first diameter contracting deformation section is connected integrally with a second portion near one end of said first diameter expanding deformation section in the same circumferential direction as said other end with interposition of a first joint section,
• a third portion near the other end in the circumferential direction of said first diameter expanding deformation section is connected integrally with a fourth portion near one end of said second diameter contracting deformation section in the same circumferential direction as said other end, with interposition of a second joint section,
• a fifth portion near the other end in the circumferential direction of said second diameter contracting deformation section is connected integrally with a sixth portion near one end of said second diameter expanding deformation section same circumferential direction as said other end with interposition of a third joint section, and
• when said squeezing bolt is screwed, the deformation is restricted in the circumferential direction to said bridge section at the other end in the circumferential direction of said second diameter expanding deformation section, whereby the diameters of the inner peripheral surfaces in the form of a circular arc of respective said first diameter contracting deformation section and second diameter contracting deformation section are contracted, and the diameters of the outer peripheral surfaces in the form of a circular arc of respective said first diameter expanding deformation section and second diameter expanding deformation section are expanded.

For mounting a rotor on a shaft with an outer peripheral shaft surface, said rotor having a central hole surrounding the outer peripheral shaft surface, a rotor fixture comprising;

• a first diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface,
• a first diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said diameter expanding deformation section being disposed coaxially adjacent to the one side of said first diameter contracting deformation section,
• a second diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface, said second diameter contracting deformation section being disposed coaxially adjacent to said first diameter expanding deformation section on the opposite side in the axial direction to said first diameter contracting deformation section,
• a second diameter expanding deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc along the outer peripheral shaft surface and an outer peripheral section surface in the form of a circular arc to be fitted to the inner peripheral hole surface, said second diameter expanding deformation section with the fan-shaped cross-section being disposed coaxially adjacent to said second diameter contracting deformation section on the opposite side in the axial direction to said first diameter expanding deformation section,
• a third diameter contracting deformation section with a fan-shaped cross-section having an inner peripheral section surface in the form of a circular arc to be fitted to the outer peripheral shaft surface, said third diameter contracting deformation section being disposed coaxially adjacent to said second diameter expanding deformation section on the opposite side in the axial direction to said second diameter contracting deformation section,
• a bridge section with a fan-shaped cross-section having an inner peripheral bridge surface in the form of a circular arc to be fitted to the outer peripheral shaft surface and an outer peripheral bridge surface in the form of a circular arc to be fitted to the inner peripheral hole surface in a position at least facing to said first diameter expanding deformation section and second diameter expanding deformation section, said bridge section with the fan-shaped cross-section being disposed between both ends in the circumferential direction of each of said first diameter contracting deformation section, first diameter expanding deformation section, and second diameter contracting deformation section, second diameter expanding deformation section, and third diameter contracting deformation section, and
• a squeezing bolt for connecting in the circumferential direction the one end in the circumferential direction of said first diameter contracting deformation section with said bridge section,
• wherein a first portion near the other end in the circumferential direction of said first diameter contracting deformation section is connected integrally with a second portion near one end of said first diameter expanding deformation section in the same circumferential direction as said other end with interposition of a first joint section,
• a third portion near the other end in the circumferential direction of said first diameter expanding deformation section is connected integrally with a fourth portion near one end of said second diameter contracting deformation section in the same circumferential direction as said other end, with interposition of a second joint section,
• a fifth portion near the other end in the circumferential direction of said second diameter contracting deformation section is connected integrally with a sixth portion near one end of said second diameter expanding deformation section in the same circumferential direction as said other end with interposition of a third joint section,
• a seventh portion near the other end in the circumferential direction of said second diameter expanding deformation section is connected integrally with an eighth portion near one end of said third diameter contracting deformation section in the same circumferential direction as other end with interposition of a fourth joint section, and
• when said squeezing bolt is screwed, the deformation is restricted in the circumferential direction to said bridge section at the other end in the circumferential direction of said third diameter contracting deformation section, whereby the diameters of the inner peripheral surfaces in the form of a circular arc of respective said first diameter contracting deformation section, second diameter contracting deformation section, and third diameter contracting deformation section are contracted, and the diameters of the outer peripheral surfaces in the form of a circular arc of respective said first diameter expanding deformation section and second diameter expanding deformation section are expanded.

A rotor fixture for mounting a rotor having a cylindrical bore on a cylindrical shaft,

• a first section adapted to be clamped within the bore of the rotor by expansion of its outer periphery,
• a second section adapted to be clamped onto the shaft by contraction of its central bore, the second section having complementary partial-circular segments separated circumferentially at two sides of the shaft,
• clamping means mounted in said second section on one side of the shaft operable to cause the segments on one side of the shaft to close and grip the shaft, further operation of the clamping means effecting separation of the segments on another side of the shaft,
• said first section having two partial-circular segments joined with the two segments of the second section at the other side of the shaft, so that when the segments of the second section are separated on the other side of the shaft by said clamping means, the segments of the first section are likewise separated to clamp the first section within the cylindrical bore of the rotor.