Press mounted cam and method of manufacture
A press mounted cam has an adapter, slide and a driver with range of sizes and working angles provided at low cost by driver and/or adapter constructions having base plates and a series of side by side upright plates of a number corresponding to a given length with an angled top corresponding to a given working angle.
1. In a cam for installation in a forming press including:
an adapter configured to be mounted so as to be supported by a press platen;
a slide mounted on said adapter to be guided thereon while undergoing limited lateral movement thereon;
a driver adapted to be mounted to be supported by another press platen aligned with said adapter and slide;
said driver having a sloping cam surfaces drivingly engaging a sloping cam surface on said slide upon continued descending movement of an upper press platen and causing lateral movement of said slide on said adapter to carry out a forming process with tooling on said slider, the improvement wherein one of said driver or adapter includes a base plate mountable to be supported on a press platen, a segmented series of side by side parallel upright plates affixed to said base plate, said upright plates each having an upper end inclined at a working angle, with a support plate attached thereto, and wear plates mounted thereon defining said driver cam surfaces.
2. The cam according to claim 1 further including a projecting locator key affixed to said driver aligned with a channel formed in said slide, said locator-guide key moving into said slot as said slide descends towards said driver prior to engagement of said cam surfaces.
3. The cam according to claim 2 wherein both said adapter and driver include a base plate mountable to a respective press platen and a series of side by side upright plates having a support plate affixed to the upper ends thereof, and wear plates attached thereto.
4. A method of constructing press mounted cams of a range of sizes and working angles each having an adapter mountable to one platen of a press, a slide suspended on said adapter, and a separate driver mountable on another platen of a press, including:
for each size and working angle cam, constructing a driver for each size and working angle by assembling a side by side segmented series of parallel upright plates onto a base plate of a length mountable to said one press platen, the length of the base plate and the number of upright plates matched to the length of a given cam, each upright plate affixed to a support plate extending along said side by side series of upright plate and inclined at the working angle for a given cam.
5. The method according to claim 4 wherein said adapters are each constructed by assembling a side by side series of parallel upright plates onto a base plate of a length mountable to an upper press platen, the length of the base plate and the number of upright plates matched to the length of a given cam, each upright plate affixed to a support plate extending along said side by side series of upright plate and inclined at the working angle for a given cam.
6. The method according to claim 4 further including:
making a series of castings of different lengths from which slides can be machined of a constant side angles, and cutting shorter lengths from each casting length from which a series of slides of different lengths are machined to provide a complete series of slide lengths.
7. A method of constructing press mounted cams of a range of sizes and working angles each having an adapter mountable to one platen of a press, a slide suspended on said adapter, and a separate driver mountable on another platen of a press, including:
for each size and working angle cam, constructing a driver for each size and working angle by assembling a side by side series of parallel upright plates onto a base plate of a length mountable to said one press platen, the length of the base plate and the number of upright plates matched to the length of a given cam, each upright plate affixed to a support plate extending along said side by side series of upright plate and inclined at the working angle for a given cam; and
making a series of castings of different lengths from which slides can be machined of a constant side angle, and cutting shorter lengths from each casting length from which a series of slides of different lengths are machined to provide a complete series of slide lengths.