Abstract: Provided is a novel olefin polymer which is excellent in lightness and moldability, has high rigidity and yields molded products excellent in flexural elasticity. The olefin polymer includes a propylene initial polymerization product formed in the presence of an olefin polymerization catalyst which is a contact reaction product of an olefin polymerization solid catalyst component containing a titanium atom, a magnesium atom, a halogen atom and an internal electron donating compound, at least one organoaluminum compound selected from the compounds of the general formula (I), and a first external electron donating compound; and a polypropylene part formed of a propylene polymerization product formed in the presence of the olefin polymerization catalyst and a second external electron donating compound higher in adsorption to the surface of the olefin polymerization solid catalyst component than the first external electron donating compound.

Abstract: A machine tool which processes a machine target object using a main shaft which revolves, the machine tool includes a support portion which supports the main shaft; a first driving unit which revolves the main shaft about a first axis; a second driving part which feeds the main shaft from the support portion in a direction of the first axis; a control part which changes an upper limit value of a revolution speed of the main shaft according to a feeding length of the main shaft fed from the support portion; and a memory unit which associates and stores the upper limit value of the revolution speed and the feeding length.

Abstract: An auxiliary fitting jig used to fit connectors with each other includes displacement movement members movable to be displaced according to a rotational angle of a lever with respect to both side surfaces of a jig body having a connector reception chamber and connector engagement lock portions. The displacement movement members have deformation preventing portions configured to prevent bending deformation of the connector engagement lock portions and deformation allowing portions configure to allow the bending deformation of the connector engagement lock portions.

Abstract: An auxiliary fitting jig includes first and second jig bodies configured to hold a connector from both sides of the connector, a first interval adjustment mechanism configured to interval-adjustably connect the first and second jig bodies, first and second lever bodies pivotally supported by the first and second jig bodies respectively, a second interval adjustment mechanism configured to interval-adjustably connect the first and second lever bodies in accordance with an interval between the first and second jig bodies adjusted by the first interval adjustment mechanism.

Abstract: An auxiliary fitting jig used to fit connectors with each other includes displacement movement members movable to be displaced according to a rotational angle of a lever with respect to both side surfaces of a jig body having a connector reception chamber and connector engagement lock portions. The displacement movement members have deformation preventing portions configured to prevent bending deformation of the connector engagement lock portions and deformation allowing portions configure to allow the bending deformation of the connector engagement lock portions.

Abstract: An auxiliary fitting jig includes first and second jig bodies configured to hold a connector from both sides of the connector, a first interval adjustment mechanism configured to interval-adjustably connect the first and second jig bodies, first and second lever bodies pivotally supported by the first and second jig bodies respectively, a second interval adjustment mechanism configured to interval-adjustably connect the first and second lever bodies in accordance with an interval between the first and second jig bodies adjusted by the first interval adjustment mechanism.

Abstract: A machine tool which processes a machine target object using a main shaft which revolves, the machine tool includes a support portion which supports the main shaft; a first driving unit which revolves the main shaft about a first axis; a second driving part which feeds the main shaft from the support portion in a direction of the first axis; a control part which changes an upper limit value of a revolution speed of the main shaft according to a feeding length of the main shaft fed from the support portion; and a memory unit which associates and stores the upper limit value of the revolution speed and the feeding length.