DIN 82 Knurling, standard by Deutsches Institut Fur Normung E.V. (German National Standard), published on Jan. 01, 1973.
There are generally two different types of knurling process: cut knurling and form knurling. Each of these processes has its own particular areas of application with correlated properties:
| RAA 0º | RBL 45º | RBL 30º | RBR 45º | RBR 30º | |
.png) |
.png) |
.png) |
.png) |
.png) |
|
| knurl with axially parallel grooves | left-hand knurl, spiral angle 30 degrees | left-hand knurl, spiral angle 45 degrees | right-hand knurl, spiral angle 30 degrees | right-hand knurl, spiral angle 45 degrees |
| RGE 30º | RGE 45º | RGV 30º | RGV 45º | RKE | RKV |
.png) |
.png) |
.png) |
.png) |
.png) |
.png) |
| left-right knurl, spiral angle 30 degrees, points raised | left-right-hand knurl, spiral angle 30 degrees, left-right-hand knurl, points raised | left-right-hand knurl, points indented | left-right-hand knurl, points indented, 45 degrees | cross-hatched knurl, points raised, 90 degrees | cross-hatched knurl, points indented, 90 degrees |
• The external diameter of the workpiece will be increased.
• It will compress the surface of the workpiece.
• Not recommended for thin materials.
• Form knurling on workpieces with a small diameter is possible to result in slightly plastic deformation on its end, as mentioned previously in "Diamond Knurling Operation on CNC Lathe ".
• The CNC lathe is subjected to a greater load due to the higher pressure.
• Slower cutting speed and feed rate, compared to cutting knurling.
• Maximum precision and surface quality
• Can be used for knurling thin materials without deformation
• Saves time on account of higher cutting speed and feed rate
• Compatible with virtually any material, including cast iron and plastic
• Cutting process with less loading protects the top end CNC lathe.
• No or minimal changes to the external workpiece diameter.
MoonLight Metal Products
Nilkanth Estate | Plot No. 2/1/4 | Nr. Priosha Extrusion |