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Machine finishes balls to high degree of roundness
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Angele Jr., W.Jr.,Hill, J. P. |
| Copyright Year | 1972 |
| Description | Machine was developed to finish ball to roundness within 12.5 nm (half a microinch) from any types of hard material. Grinding and polishing to this tolerance is accomplished by lapping elements on four to six motor-driven spindles. Spindles are adjustably spring-loaded to ensure constant contact pressure on ball and are driven by variable speed electric motors. |
| File Size | 569514 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720000594 |
| Archival Resource Key | ark:/13960/t0ms8gr4x |
| Language | English |
| Publisher Date | 1972-09-01 |
| Access Restriction | Open |
| Subject Keyword | Fabrication Technology Tolerances Mechanics Machining Polishing Balls Grinding Material Removal Spheres Pressure Surface Finishing Spindles Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |