Dental Implants You are correct, it is a labeling error. Here is your dental prosthesis!!!
Manufacturing process of bridges, crowns, bone implants, fixtures, abutments.
Manufacturing process of bridges, crowns Dental scanner 3D scanning technology Dental CAD processing machining process on 3 or 5 axes CNC machine Programmation and simulation
It exists many models of scanners, software and machine tools Scanners or various well-known dental CAD systems: 3 Shape, Cynovad, Cercon, Dental wings,! Types of machine-tools used in the dental and industrial sectors: 360SDM, Agie Charmilles, Charlyrobot, Datron, Dent-Tec, DMG, Lilian, Lycodent, Imes, Isel, Kavo, Mikron, Real Meca, Roland, Röders, VHF, Wieland, Willemin Macodel, Wissner, Witech, Yenamak,!
All types of dentures are concerned
Materials machined Depending on suppliers of machinery and systems, there are different predefined machining blanks (discs, bars, implants, stellites,...) In this market, the main raw materials are: zirconium, Ceramic, cobalt chrome, titanium, PMMA!
Different materials in dental industry Materials Kc1 [N/mm 2 ] Tensile strength [Mpa] Thermal conductivity W/(m K) Machining problem Chrome Cobalt (stellite ) Titanium alloy (Grade 5) 3000 800 15!High cutting forces!high abrasion and crater wear 1300 950 7!Thermal shock!chipping PMMA <200 40 0.2!Requires low machining temperature Zirconium (before sintering) <200 / /!Strong abrasive wear!crumbling when machining
Material and our tools Materials Chrome Cobalt (stellite ) Toric end mill (roughing) Ball nose end mill (finishing) Drilling 7070 7532,7542 1147 1280 Titanium alloy (Grade 5) 7552 7554 7045, 7046, 7047 1151 1131 PMMA 7552 7045, 7046, 7047 1131 Zirconium (before sintering) 7552 7045, 7046, 7047 1131 1151
Cutting conditions in metallic alloy Chrome Cobalt (stellite ) Titanium alloy (grade5) Roughing (7070) Finishing (7532) Drilling Roughing (7552) Finishing (7047) Drilling Vc [m/min] 50 100 50 Vc [m/min] 60 120 50 f or fz 0.015xØ 0.015xØ 0.01xØ f or fz 0.02xØ 0.03xØ 0.02xØ a e 0.6xØ 0.15xØ / a e 0.6xØ 0.15xØ / a p 0.05xØ 0.05xØ / a p 0.15xØ 0.3xØ /
Cutting conditions in non metallic material PMMA Zirconium Roughing (7552) Finishing (7047) Drilling Roughing (7552) Finishing (7047) Drilling Vc [m/min] 80 120 50 Vc [m/min] 120 250 100 f or fz 0.05xØ 0.05xØ 0.1xØ f or fz 0.015xØ 0.015xØ 0.02xØ a e 0.6xØ 0.15xØ / a e 0.6xØ 0.15xØ / a p 0.25xØ 0.1xØ / a p 0.15xØ 0.05xØ /
bone implants, abutments 1 - Step drill DIXI 1503 Ball nose end mill DIXI 7032 3 - Internal thread whirling process DIXI 1730 DIXI 1738 Center drill DIXI 1106 Drilling DIXI 1135 Milling DIXI 7253 2 Boring tool DIXI 2185 SP
The internal thread whirling process s c
DIXI 1730 and 1738 - The process 1: 2: The workpiece is positionned in front of the tool wich is rotating at high speed. The tool is introduced into the workpiece by the sliding of the headstock which drives the workpiece. s s 3: The part rotates slowly, either in the direction of the tool or opposing direction, depending on the type of thread (left pitch/right pitch). The tool, witch is conveyed by a numeric axis penetrates into the material of the revolving part by lateral displacement. The offset is equal to the depth of the thread being machined. s c 4: The thread is executed in a single pass. Both the workpiece and tool rotate. The workpiece withdrawn at the speed of one pitch per revolution of spindle. s c
DIXI 1730 and 1738 - Technical information DIXI 1730 : s c Workpiece: 20-60 rpm 8'000-40 000 tr/min (1 or 2 seconds per pitch) Minimal Ø of the thread : ISO M0,80 x 0,20 Length of the thread up to 5 times the diameter Tool life expectancy: from 1 500 to 6 000 threads according to the threaded Ø, material of the workpiece, length of the thread. Example : 1 500 threads M1,60 in titanium. This is the most effective technique to machine internal threads in tough materials as titanium or stainless steel. Excellent surface finish, without burrs.
Advantages Less problem with chips (short chips as it is a milling process). The customer does not have to stop the machine for chip evacuation.the thread whirling process is more profitable than the tapping process Higher precision in comparison to traditional tapping process. This technique allows to adjust the diameter according to the required tolerances (6H, 5H) The threads are completed very close to the bottom of the holes in blind holes.
Cutting conditions on lathe machine s c Tool (S)/ outil (S) Main spindle with the workpiece (c) rotates between 20 and 60 rpm
Machine tool types CINCOM.CITIZEN Gildemeister STAR TORNOS Tsugami and Myano
Example of rotating tool holder spindle
Application example Dental implants or bone implants. Machine with rotating tool holder spindle of 8 000 rpm maximum (Star machine) M1.40 x 0.30 Titanium grade 4 DIXI 1730 Ø1.05 = 8 000 rpm Vf = 30 mm/min Cutting oil
Application example Dental implants or bone implants Machine with rotating tool holder spindle of 30 000 rpm maxi (Tornos Deco 2000 machine NSK spindle) M1.40 x 0.30 Titanium grade 4 DIXI 1730 Ø1.05 = 23 000 rpm Vf = 30 mm/min Cutting oil
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