Machine tool profiling device

A profiling device for surface profiling, comprising:

• (A) a horizontal planar surface work table;
• (B) a frame member extending vertically from, and connected to, said table;
• (C) a spindle head frame casing movably connected to said frame member at a position above said table, said casing having contained therein a vertically positioned spindle;
• (D) a tracer arm member connected to said spindle head frame casing so as to extend from said casing, said arm extending over a portion of said table;
• (E) a tracer head frame casing connected to said arm at a position above said table, said casing having contained therein a vertically positioned tracer spindle, supported within said casing by an upper support member and a lower support member in such a manner so as to permit slight inclination from its vertical position and so as to further permit free rotation;
• (F) a spindle displacement detecting unit in connection with said spindle, said detecting unit providing a means to detect vertical movement of said spindle in an analog fashion by means of a differential transformer and wherein the degree of spindle inclination is converted to a vertical movement of a displacement bar in connection with said differential transformer;
• and
• (G) a means for vertically raising said spindle, said means being capable of temporarily lifting said spindle relative to said tracer head frame casing until said detecting unit generates a signal indicating the spindle inclination and vertical movement has exceeded a set value.

A profiling device for contour profiling including a tracer which has a tracer spindle and a stylus, which comprises:

• a horizontal planar surface work table;
• and
• a frame member extending vertically from, and connected to, said table;
• a spindle head frame casing movably connected to said frame member at a position above said table, said casing having contained therein a vertically positioned spindle;
• a tracer arm member connected to said spindle head frame casing so as to extend from said casing, said arm extending over a portion of said table;
• a tracer head frame casing connected to said arm at a position above said table, said casing having contained therein a vertically positioned tracer spindle, supported within said casing by an upper support member and a lower support member in such a manner so as to permit slight inclination from its vertical position and so as to further permit free rotation;
• a spindle displacement detecting unit in connection with said spindle, said detecting unit providing a means to detect vertical movement of said spindle in an analog fashion by means of a differential transformer and wherein the degree of spindle inclination is converted to a vertical movement of a displacement bar in connection with said differential transformer;
• and
• the stylus eccentrically fixed at a lower end of a tracer spindle,
• a spindle inclination detecting unit provided so as to detect spindle inclination with respect to contact of the stylus with a model in an analog fashion by a differential transformer and change the rotational speed of the spindle in proportion to the extent of such inclination,
• a work table shift command plate supported concentrically with said spindle so as to permit the rotation of said plate at the same speed as said spindle, said plate having an outer periphery having a smooth curvature symmetrical to the straight line which passes through said plate and intersects at a right angle with the center of rotation of said plate, said line coinciding with a second straight line connecting a center of said stylus with a center of said spindle;
• two pairs of work table shift detecting means located at equal intervals on the circumference which is concentric with the shaft center of the spindle corresponding to the outer periphery of the said command plate, in which these shift detecting means are so connected as to generate signals according to the relative displacement from shift detecting means on the outer periphery caused by rotation of the command plate so that the work table can be moved in two directions which intersect with each other at right angle.

A profiling device for surface profiling including a tracer which has a tracer spindle and a stylus, which comprises:

• the stylus being given a correction allowance at the contact point between a model and the said allowance being taken a stylus inclination extent into consideration,
• a horizontal planar surface work table;
• and
• a frame member extending vertically from, and connected to, said table;
• a spindle head frame casing movably connected to said frame member at a position above said table, said casing having contained therein a vertically positioned spindle;
• a tracer arm member connected to said spindle head frame casing so as to extend from said casing, said arm extending over a portion of said table;
• a tracer head frame casing connected to said arm at a position above said table, said casing having contained therein a vertically positioned tracer spindle, supported within said casing by an upper support member and a lower support member in such a manner so as to permit slight inclination from its vertical position and so as to further permit free rotation;
• a spindle inclination detecting unit in connection with said spindle, said detecting unit providing a means to detect spindle inclination in an analog fashion by means of a differential transformer wherein the degree of inclination is detected from the change in rotational speed of said spindle and wherein the degree of spindle inclination is connected to a vertical movement of a displacement bar in connection with said differential transformer;
• a spindle displacement detecting unit is provided so as to detect in an analog fashion the inclination and vertical movement of the spindle due to contact of the stylus with a model and also to change the vertical shift speed of the tracer in proportion to the extent of inclination and vertical movement,
• the stylus being enlarged by a correction allowance at the contact point with a model and wherein said correction allowance is provided for with consideration to the extent of inclination of said stylus;
• a stylus directivity supporting means being provided so that the stylus correction allowance may direct toward the profiling direction with respect to the spindle during profiling operation, and
• an inverting means being furnished to invert the spindle by 180 degrees by receiving a singal which is issued when a work table comes to a movement limit position.

A profiling device for contour and a surface profiling including a tracer which has a tracer spindle and a stylus, which comprises:

• a horizontal planar surface work table;
• and
• a frame member extending vertically from, and connected to, said table;
• a spindle head frame casing movably connected to said member at a position above said table, said casing having contained therein a vertically positioned spindle;
• a tracer arm member connected to said spindle head frame casing so as to extend from said casing, said arm extending over a portion of said table;
• a tracer head frame casing connected to said arm at a position above said table, said casing having contained therein a vertically positioned tracer spindle, supported within said casing by an upper support member and a lower support member in such a manner so as to permit slight inclination from its vertical position and so as to further permit free rotation;
• a spindle inclination detecting unit in connection with said spindle, said detecting unit providing a means to detect spindle inclination in an analog fashion by means of a differential transformer wherein the degree of inclination is detected from the change in rotational speed of said spindle and wherein the degree of spindle inclination is connected to a vertical movement of a displacement bar in connection with said differential transformer;
• the stylus eccentrically fixed at a lower end of a tracer spindle,
• a spindle displacement detecting unit provided so as to detect spindle inclination and vertical movement with respect to contact of the stylus with a model in an analog fashion by a differential transformer and change the rotational speed of the spindle in proportion to the extent of such inclination and vertical movement,
• a work table shift command plate supported concentrically with said spindle so as to permit the rotation of said plate at the same speed as said spindle, said plate having an outer periphery having a smooth curvature symmetrical to the straight line which passes through said plate and intersects at a right angle with the center of rotation of said plate, said line coinciding with a second straight line connecting a center of said stylus with a center of said spindle;
• two pairs of work table shift detecting means located at equal intervals on the circumference which is concentric with the shaft center of the spindle corresponding to the outer periphery of the said command plate, in which these shift detecting means are so connected as to generate signals according to the relative displacement from shift detecting means on the outer periphery caused by rotation of the command plate so that the work table can be moved in two directions which intersect with each other at right angle,
• a spindle lifting means is furnished so that the spindle can be lifted temporarily and relatively with respect to the said tracer case until the detecting part outputs a negative signal slightly lower than zero after receiving a signal from the detecting part showing the spindle inclination and vertical movement has exceeded the set value.

A profiling device for surface profiling including a tracer which has a tracer spindle and a stylus, which comprises:

• a horizontal planar surface work table;
• and
• a frame member extending vertically from, and connected to, said table;
• a spindle head frame casing movably connected to said frame member at a position above said table, said casing having contained therein a vertically positioned spindle;
• a tracer arm member connected to said spindle head frame casing so as to extend from said casing, said arm extending over a portion of said table;
• a tracer head frame casing connected to said arm at a position above said table, said casing having contained therein a vertically positioned tracer spindle, supported within said casing by an upper support member and a lower support member in such a manner so as to permit slight inclination from its vertical position and so as to further permit free rotation;
• a spindle inclination detecting unit in connection with said spindle, said detecting unit providing a means to detect spindle inclination in an analog fashion by means of a differential transformer wherein the degree of inclination is detected from the change in rotational speed of said spindle and wherein the degree of spindle inclination is connected to a vertical movement of a displacement bar in connection with said differential transformer;
• a spindle displacement detecting unit is provided so as to detect in an analog fashion the inclination and vertical movement of the spindle due to contact of the stylus with a model and also to change the vertical shift speed of the tracer in proportion to the extent of inclination and vertical movement, and
• a spindle lifting means is furnished so that the spindle can be lifted temporarily and relatively with respect to the said tracer case until the detecting part outputs a negative signal slightly lower than zero after receiving a signal from the detecting part showing the spindle inclination and vertical movement has exceeded the set value,
• the stylus being enlarged by a correction allowance at the contact point with a model and wherein said correction allowance is provided for with consideration to the extent of inclination of said stylus,
• a stylus directivity supporting means being provided so that the stylus correction part may direct toward the profiling direction with respect to the spindle during profiling operation, and
• an inverting means being furnished to invert the spindle by 180 degrees by receiving a signal which is issued when a work table comes to a movement limit position.