Touch probe
AssigneeParadyne Corporation
InventorTimothy R. Willoughby
Life of this patent
Estimating the term…
Abstract
The present invention is a touch probe which can be connected to a computer controlled machine for determining positions of and defining shapes of work pieces, edges, hole centers and contours. The probe due to it design allows for a simpler and effective alternative to previous probes. The probe includes a body, stylus, a shank and an internal assembly. The body contains the internal assembly, which provide signals to a computer. The arrangement of the internal assembly is what makes the present invention simpler to manufacture and allow the probe to be miniaturized. The internal assembly includes an upper circuit board with a Light Emitting Diode (LED), a spring, a spring cap, a stylus mount, a housing, carbide balls, a lower circuit board, a support ring and wires.
Claims18
A touch probe to be mounted to a computer controlled machine comprising;
- a body;
- a stylus and a shank;
- wherein said shank comprises:
- a top cap, a machine attachment shaft extending upward to be attached to said machine and a reversed tapered boss extending downward from said top cap;
- and wherein said reversed tapered boss is completely fitted into said body at an open top of said body such said top cap covers said open top of said body and said tapered boss reduces in taper towards said top cap.
A touch probe to be mounted to a computer controlled machine comprising;
- a body;
- a stylus and a shank;
- and wherein said probe further includes an internal assembly internal to said body comprising:
- electronics to provide signals to a computer of said computer controlled machine when said stylus is deflected;
- a stylus mount including a top and a bottom, said bottom for receiving said stylus and said stylus mount able to conduct electrical current;
- at least three pins extending from said top of said stylus mount;
- a housing to receive the insertion of said stylus mount, said housing having an open top, a continuous side and a bottom, said bottom having a center hole to allow passage of said bottom of said stylus mount and said bottom having six ball holes along a periphery of said bottom;
- six balls which can conduct electrical current, said balls sized such that only a portion of the balls extend through said ball holes and into said housing, said ball holes arranged in three paired sets to arrange said balls into three sets of paired balls such that each set of said paired balls supports one of said pins of said stylus mount between said paired balls when said stylus mount is inserted into said housing;
- a lower plate including contact pads for each ball, said lower plate attachable to said bottom of said housing for securing said balls between said lower plate and said bottom of said housing such that each ball is in contact with a contact pad, and said contact pads wired to said electronics;
- and
- wherein said shank comprises:
- a machine attachment end, a top cap and a reversed tapered boss;
- wherein said body includes an open ended top;
- wherein at least two screw holes are located on said body in relation to said reversed tapered boss when said reversed tapered boss is positioned inside said open ended top of said body;
- and further including at least three set screws screwed into said at least two screw holes such that said at least two set screws enter into said body and against said reversed tapered boss in order to secure said shank to said body.
A touch probe to be mounted to a computer controlled machine comprising;
- a body;
- a stylus and a shank;
- wherein said probe further includes an internal assembly internal to said body comprising:
- electronics to provide signals to a computer of said computer controlled machine when said stylus is deflected;
- a stylus mount including a top and a bottom, said bottom for receiving said stylus and said stylus mount able to conduct electrical current;
- at least three pins extending from said top of said stylus mount;
- a housing to receive the insertion of said stylus mount, said housing having an open top, a continuous side and a bottom, said bottom having a center hole to allow passage of said bottom of said stylus mount and said bottom having six ball holes along a periphery of said bottom;
- six balls which can conduct electrical current, said balls sized such that only a portion of the balls extend through said ball holes and into said housing, said ball holes arranged in three paired sets to arrange said balls into three sets of paired balls such that each set of said paired balls supports one of said pins of said stylus mount between said paired balls when said stylus mount is inserted into said housing;
- and
- a lower plate including contact pads for each ball, said lower plate attachable to said bottom of said housing for securing said balls between said lower plate and said bottom of said housing such that each ball is in contact with a contact pad, and said contact pads wired to said electronics.
A touch probe to be mounted to a computer controlled machine comprising;
- a body;
- a stylus and a shank;
- and wherein said probe further includes an internal assembly internal to said body comprising:
- electronics to provide signals to a computer of said computer controlled machine when said stylus is deflected;
- a stylus mount including a top and a bottom, said bottom for receiving said stylus and said stylus mount able to conduct electrical current;
- at least three pins extending from said top of said stylus mount;
- a housing to receive the insertion of said stylus mount, said housing having an open top, a continuous side and a bottom, said bottom having a center hole to allow passage of said bottom of said stylus mount and said bottom having six ball holes along a periphery of said bottom;
- six balls which can conduct electrical current, said balls sized such that only a portion of the balls extend through said ball holes and into said housing, said ball holes arranged in three paired sets to arrange said balls into three sets of paired balls such that each set of said paired balls supports one of said pins of said stylus mount between said paired balls when said stylus mount is inserted into said housing;
- a lower plate including contact pads for each ball, said lower plate bottom of said housing for securing said balls between said lower plate and said bottom of said housing such that each ball is in contact with a contact pad, and said contact pads wired to said electronics;
- and
- wherein said housing includes a slot in said side for each pin, said slots to act as a guide for movement of said stylus mount;
- wherein said lower plate is a circuit board;
- further including a spring to provide a tension to force said pins against said balls;
- and further including a spring cap to force said spring towards said pins.
Dependencies are inferred from the claim text.