Page 32 - 《橡塑技术与装备》英文版2025年12月

HINA R&P TECHNOLOGY AND EQUIPMENT

(2) Tool fillet: R0.4 or R0.8. If using a C80 degree
tool, R0.4 is more suitable, as R0.8 is prone to generating
chatter marks. Sandvik's CNMG120404-WF 4415 material
has a longer processing lifespan; when machining the mating
end, continuous turning for 1.5 to 2 hours results in stable
dimensions. For the D series with a 55 degree angle, the 04
fillet can be used, such as Sandvik's DNMX150604-WF 4415.
(3) Chip breaking capability: Under high-pressure M103
conditions, Kyocera's WP groove type exhibits strong chip
breaking capability, producing flaky and very short iron chips.
Figure 5 Setup diagram
(4) Processing Lifespan: Sandvik 4415 material boasts
a longer processing lifespan, capable of turning 4~5 meters.
shaft as required.
6.4 Part hoisting Sandvik is the top choice for turning carbon steel.
Lift the parts according to the requirements, and pay Table 2 Roughing and finishing tools
Rough turning
attention to safety as they are relatively heavy. knife handle C8-391.02-63080B Sandvik
6.5 Record top position tool holder C6-PCLNL-45065-12HP Sandvik
blade
Sandvik
CNMG120408-PR 4425
Use M841 to record the top zero position. After the finish turning
knife handle C8-391.02-63080B Sandvik
workpiece is installed and the top is properly positioned, use tool holder C6-PCLNL-45065-12HP Sandvik
M842 to record this position. blade CNMG120404-WF 4415 Sandvik
blade CNMG120404-WP PV720 Kyocera
knife handle C8-391.02-63080B Sandvik
C6-PDJNL-45065-15HP
7 Cutting tools tool holder DNMX150604-WF 4415 Sandvik
blade
Sandvik
Only a brief explanation will be provided for precision
turning tools, trapezoidal thread turning tools, and gun drills. Table 3 Gun drill and trapezoidal thread
Multiple manufacturers of precision turning tools have been Gun drill
knife handle CA80-XP16-80.0R ISCAR
tested (see Table 2), and comprehensive factors such as turning tool holder GD-DH 15.00-800-23 ISCAR
quality and stability, chip breaking ability, and cost should be blade TOGT 070304-DT IC908 ISCAR
guide strip GPS-05-18-060-DC IC908 ISCAR
considered. This article only uses Sandvik 4415 carbide and trapezoidal thread
knife handle CA80-SEL-55080-22T Sentai Yingge
Kyocera PV720 ceramic, and the tests were conducted only blade 4EL 6.0 TR VTX VARQUS
under specific conditions for reference purposes only.
7.1 Fine turning tool 7.2 Gun drill
Processing parameters: The test conditions are uniformly It is recommended to use indexable gun drills as shown
set at vc=200 and 250, fn=0.12 mm/r, and ap=0.3 mm. The in Table 3, which are suitable for high-feed machining with
linear speed for Sandvik should be 250 m/min, and it should be a higher feed rate than brazed gun drills. The indexable
maintained at least above 200 m/min. For Kyocera, both 200 insert system significantly reduces tool management costs,
and 250 m/min are acceptable. eliminating the need for re-sharpening the drill bit. The use
(1) Tool geometric angle: For C-type 80-degree tools, of indexable gun drills facilitates the use and operation for
only 04 round corner options are available. 08 will produce workers.
chatter marks. Both Sandvik CNMG120404-WF4415 and (1) Trapezoidal thread: Using the VARGUS VRX series,
CNMG120404-WP PV720 are suitable. However, for long- higher linear speeds can be achieved, enhancing machining
term cutting, Sandvik can meet the lifespan requirements. efficiency. When turning P6 threads, employing radial cutting
Overall, D-type 55-degree tools are also an option, offering can produce threads of superior quality.
lighter and faster turning.

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