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US 4,056,900 AGranted
Cam machining apparatus
AssigneeOkuma Machinery Works Ltd.
InventorTakashi Ishida
Life of this patent
Estimating the term…
Abstract
A cam machining apparatus are arranged such that: in a cam machining tool, oscillating motion is rendered between a work piece and a rotating tool in a manner that the center of the rotating tool stays on the normal line at a working point where the rotating tool and the work piece contact each other without making the working point shift, so that a cam can be machined with high accuracy of working without the cam contour being deformed even if the diameter of tool is changed, uniform finishing can be rendered along all the circumference of the cam face by keeping the speed of working substantially constant along all the circumference of the cam face, whereby high working accuracy can be obtained.
Claims5
A cam machining apparatus wherein a rotating tool is used in performing work controlled by profiling of a master cam, characterized in that said apparatus comprises
- a work spindle rotatably mounted on a work head and adapted to be fitted with a work piece for rotation therewith at a predetermined number of rotations;
- an oscillating cam mounted on a tool holder and rotating in a certain proportion with the rotation number of said work spindle;
- a swivel member swiveling with the rotation of said oscillating cam;
- a tool spindle unit having a rotating tool, provided on said swivel member and being slidable perpendicularly to the swiveling axis of swivel member;
- a carriage supporting one of said work head and said tool for sliding movement perpendicular to the axis of said spindle;
- a master cam being rotated in a certain proportion with the rotation of said work spindle, and relatively changing the distance between the axial line of said work spindle and the axial line of said rotating tool;
- and
- the rotating tool is constantly oscillated about the working point during work by sliding said tool spindle unit whereby the outer periphery of the rotating tool can be aligned with the center of swiveling of said swivel member;
- said tool holder slidably moving perpendicularly to the axial line of the work spindle with respect to said carriage and said master cam being rotated in a certain proportion with the rotation of the work spindle is adapted to cause said tool holder to slide;
- said master cam being rotated in a certain proportion with the rotation of the work spindle is mounted on said carriage and a cam follower contacting said master cam is mounted on the tool holder, thereby causing the tool holder to slidably move perpendicularly to the axial line of the work spindle with the rotation of said master cam.
7 more elements
A cam machining apparatus wherein a rotating tool is used in performing work controlled by profiling of a master cam, characterized in that:
- said apparatus comprises
- a work spindle to be fitted with a work piece;
- an oscillating cam being rotated in a certain proportion with the rotation of said work spindle by mechanical connecting means;
- a swivel member disposed at a position in opposite relationship to said work spindle and controlled in swiveling by said oscillating cam;
- a tool spindle unit having a driving power source for swiveling said swivel member and a rotating tool, provided on said swivel member and being slidable perpendicularly to the axis of swiveling of the swivel member;
- a master cam being rotated in a certain proportion with the rotation number of said work spindle, and relatively change the distance between the axial line of said work spindle and the axial line of said rotating tool;
- the rotating tool is oscillated about the generating line aligned with the swiveling axis of said swiveling member by swiveling and oscillating the swiveling member after aligning the generating line of the outer cylindrical periphery of the rotating tool with the swiveling axis of the swiveling member by sliding said tool spindle unit perpendicularly to the swiveling axis of the swiveling member;
- and
- when transmitting controlled swiveling to the swivel member, the oscillating cam is adapted to transmit its movement boosted by an hydraulic cylinder included as a part of said mechanical connecting means through a rotary servo-valve.
6 more elements
A cam machining apparatus wherein a rotating tool is used in performing work controlled by profiling of a master cam, characterized in that:
- said apparatus comprises
- a work spindle to be fitted with a work piece;
- an oscillating cam being rotated in a certain portion with the rotation of said work spindle by mechanical connecting means;
- a swivel member disposed at a position in opposite relationship to said work spindle and controlled in swiveling by said oscillating cam;
- a tool spindle unit having a driving power source for swiveling said swivel member and a rotating tool, provided on said swivel member and being slidable perpendicularly to the axis of swiveling of the swivel member;
- a master cam being rotated in a certain proportion with the rotation mnumber of said work spindle, and relatively change the distance between the axial line of said work spindle and the axial line of said rotating tool;
- the rotating tool is oscillated about the generating line aligned with the swiveling axis of said swiveling member of swiveling and oscillating the swiveling member after aligning the generating line of the outer cylindrical periphery of the rotating tool with the swiveling axis of the swiveling member by sliding said tool spindle unit perpendicularly to the swiveling axis of the swiveling member;
- and
- when transmitting controlled swiveling to the swivel member, the oscillating cam is adapted to transmit its movement boosted by an hydraulic cylinder included as a part of said mechanical connecting means through a spool valve.
6 more elements
A cam machining apparatus wherein a rotating tool is used in performing work controlled by profiling of a master cam, characterized in that:
- said apparatus comprises
- a work spindle to be fitted with a work piece;
- an oscillating cam being rotated in a certain proportion with the rotation of said work spindle, or the rate of movement of which is transmitted by electrical connecting means;
- a swivel member disposed at a position in opposite relationship to said work spindle and controlled in swiveling by said oscillating cam;
- a tool spindle unit having a driving power source for swiveling said swivel member and a rotating tool, provided on said swivel member and being slidable perpendicularly to the axis of the swivel member;
- and
- a master cam being rotated in a certain proportion with the rotation of said work spindle, and relatively change the distance between the axial line of said work spindle and the axial line of said rotating tool;
- the rotating tool is oscillated about the generating line aligned with the swiveling axis of said swiveling member by swiveling and oscillating the swiveling member after aligning the generating line of the outer cylindrical periphery of the rotating tool with the swiveling axis of the swiveling member by sliding said tool spindle unit perpendicularly to the swiveling axis of the swiveling member;
- and
- a synchronous transmitter is mounted on the work spindle and a synchronous receiver on the shaft of the oscillating cam as electrical connecting means for rotating the oscillating cam in a certain proportion with the rotation of the work spindle.
7 more elements
A cam machining apparatus wherein a rotating tool is used in performing work controlled by profiling of a master cam, characterized in that:
- said apparatus comprises
- a work spindle to be fitted with a work piece;
- an oscillating cam being rotated in a certain proportion with the rotation of said work spindle, or the rate of movement of which is transmitted by electrical connecting means;
- a swivel member disposed at a position in opposite relationship to said work spindle and controlled in swiveling by said oscillating cam;
- a tool spindle unit having a driving power source for swiveling said swivel member and a rotating tool, provided on said swivel member and being slidable perpendicularly to the axis of the swivel member;
- and
- a master cam being rotated in a certain proportion with the rotation of said work spindle, and relatively change the distance between the axial line of said work spindle and the axial line of said rotating tool;
- and
- the rotating tool is oscillated about the generating line aligned with the swiveling axis of said swiveling member by swiveling and oscillating the swiveling member after aligning the generating line of the outer cylindrical periphery of the rotating tool with the swiveling axis of the swiveling member by sliding said tool spindle unit perpendicularly to the swiveling axis of the swiveling member;
- and
- differential transmitters are provided at a section for taking out the rate of movement of the oscillating cam and a section for controlling the rate of swiveling of the swivel member, respectively, as the electrical connecting means for transmitting the rate of movement of the oscillating cam to the swivel member, and the swivel member is adapted to swivel so that the signals of both differential transmitters can act correspondingly.
8 more elements
Dependencies are inferred from the claim text.