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Woodworking tool used

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GZ2-Opening knife(1/4R burin)
GZ3-Lace knife
GZ4-Clear arc knife
Woodworking Tool Box
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Beads | barrel bead knife

Bead knife
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The gourd knife tool
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A-Straight drilling cutting tools

AA-STRAIGHT BIT
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AC-LONG BLADE STRAIGHT
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AF-MORTISING BIT
AG-:3°STRAIGHT BIT
AH-PANEL PILOT BIT WITH DRILL POINT
AI-STAGGER TOOTH STRAIGHT BIT
AJ-CLEANING BOTTOM BIT

B-Trimming knives with bearing

BA-STRAIGHT BIT WITH BEARING
BB-LONG BLADE STRAIGHT BIT WITH BEARING
BC-FLUSH TRIM BIT
BD-OVERHANG TRIM BIT
BE-FACE-INLAY BIT
BF-45 ° angle knife -45 °
BG-HORSE NOSE BIT
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C-Without bearing for guiding trimming knives

CA-”V” TYPE SLOTTING CUTTER
CB-DOVETAIL BIT
CC-15°GLUE JOINT BIT
CD-45°LOCK MITER BIT
CE-”V” GROOVE BIT

D-Straight drill form class

DA-OPEN END CARVING BIT
DB-CLASSICAL PLUNGE BIT
DC-ROUNTER BIT
DD-CARVING BIT
DE-FLAT BOTTOM CUTTER
DF-CLASSICAL PLUNGE BIT
DG-S CLASSICAL PLUNGE BIT

E-Knife round bottom line

EA-BOWL & TRAY BIT
EB-COVE BOX BIT
EC-ROUND NOSE BIT
ED-ROUND CARVING BIT
EE-TRIM BIT
EF-LONG BLADE ROUND NOSE BIT

F-Convex half circular knife

FA-CORNER ROUND BIT
FB-BEARING BIT
FC-FINGER NAIL TYPE BIT
FD-CONVEX EDGING BIT
FE-HALF ROUND SIDE CUTTER BIT
FF-BULL NOSE RADIUS BIT
FG-TRIM BIT

G-Arch arc knife types

GA-COVE WITH BEARING
GB-CLASSICAL COVE BIT
GC-CLASSICAL COVE BIT WITHOUT BEARING
GD-FLAT OGEE BIT
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您的位置:Guangzhou JeeFoo Tools Co.,Ltd >> 技术文章

刀具安全措施详细介绍

发布时间:2013-08-08

  结合高速铣刀安全性标准,通过有限元计算模型的分析,为适应安全性要求,可采取以下措施:

  1.减轻刀具质量,减少刀具构件数,简化刀具结构

  由试验求得的相同直径的不同刀具的破裂极限与刀体质量、刀具构件数和构件接触面数之间的关系,经比较发现,刀具质量越轻,构件数量和构件接触面越少,刀具破裂的极限转速越高。研究发现,用钛合金作为刀体材料减轻了构件的质量,可提高刀具的破裂极限和极限转速。但由于钛合金对切口的敏感性,不适宜制造刀体,因此有的高速铣刀已采用高强度铝合金来制造刀体。

  在刀体结构上,应注意避免和减小应力集中,刀体上的槽(包括刀座槽、容屑槽、键槽)会引起应力集中,降低刀体的强度,因此应尽量避免通槽和槽底带尖角。同时,刀体的结构应对称于回转轴,使重心通过铣刀的轴线。刀片和刀座的夹紧、调整结构应尽可能消除游隙,并且要求重复定位性好。高速铣刀已广泛采用HSK刀柄与机床主轴连接,较大程度地提高了刀具系统的刚度和重复定位精度,有利于刀具破裂极限转速的提高。此外,机夹式高速铣刀的直径显露出直径变小、刀齿数减少的发展趋势,也有利于刀具强度和刚度的提高。

  2.改进刀具的夹紧方式

  模拟计算和破裂试验研究表明,高速铣刀刀片的夹紧方法不允许采用通常的摩擦力夹紧,要用带中心孔的刀片、螺钉夹紧方式,或用特殊设计的刀具结构以防止刀片甩飞。刀座、刀片的夹紧力方向最好与离心力方向一致,同时要控制好螺钉的预紧力,防止螺钉因过载而提前受损。对于小直径的带柄铣刀,可采用液压夹头或热胀冷缩夹头实现夹紧的高精度和高刚度。

  3.提高刀具的动平衡性

  提高刀具的动平衡性对提高高速铣刀的安全性有很大的帮助。因为刀具的不平衡量会对主轴系统产生一个附加的径向载荷,其大小与转速的平方成正比。

  设旋转体质量为m,质心与旋转体中心的偏心量为e,则由不平衡量引起的惯性离心力F为:

  F=emω2=U(n/9549)2

  式中:U为刀具系统不平衡量(g·mm),e为刀具系统质心偏心量(mm),m为刀具系统质量(kg),n为刀具系统转速(r/min),ω为刀具系统角速度(rad/s)。

  由上式可见,提高刀具的动平衡性可显着减小离心力,提高高速刀具的安全性。因此,按照标准草案要求,用于高速切削的铣刀必须经过动平衡测试,并应达到ISO1940-1规定的G4.0平衡质量等级以上要求。

  结语

  高速铣刀安全性技术是研究高速刀具的一个重要内容,应加强刀具安全性的定量分析,精确确定影响高速铣刀安全性的微量因素,并从刀具的材料、结构、制造工艺等方面解决好高速铣刀的安全性。



H-Classical linear decorative knives

HA-CLASSICAL MOULDING BIT
HB-CLASSICAL MOULDING BIT WITHOUT BEARING
HB-Bilateral double R line knife
HC-CURVED LING BIT
HD-CLASSICAL BIT
HE-CLASSICAL BIT WITHOUT BEARING
HF-DOUBLE ROMAN BIT
HG-DOUBLE ROMAN BIT WITHOUT BEARING
HH-ROMAN OGEE BIT
HI-ROMAN OGEE BIT WITHOUT BEARING
HJ-CLASSICAL OGEE BIT
HK-CLASSICAL OGEE BIT
HL-WAVY EDGE BIT
HM-WAVY EDGE BIT WITHOUT BEARING
HN-CURVED ROUND WITH BEARING
HO-CLASSICAL BIT
HP-CLASSICAL BIT
HQ-Magic Knife
HR-Butterfly knife
HS-CLASSICAL MOULDING BIT
HT-CLASSICAL MOULDING BIT WITHOUT BEARING
HU-CLASSICAL MOULDING BIT
HV-CLASSICAL MOULDING BIT WITHOUT BEARING

I-Beaded Curve Knife

IA-DOUBLE BEADING BIT
IB-DOUBLE BEADING BIT
IC-DOUBLE BEADING BIT
ID-DRAGON BALL BIT
IE-A TYPE DRAWING LINE BIT
IF-DOUBLE DRAGON BALL BIT
IG-DRAGON BALL BIT

J-Crown curve decoration knives

JA-EDGE MOULDING BIT
JB-PALACE TYPE BIT
JC-CROWN MOULDING BIT
JD-CROWN MOULDING BIT
JE-CROWN MOULDING BIT
JF-CROWN MOULDING BIT

K-Architectural decorative knives streamlined

KA-DOUBLE ROUND NOSE BIT
KB-SPECIAL MOULDING BIT
KC-INTEREST MOULDING BIT
KD-FISH HANDRAIL BIT
KE-HANDRAIL BIT
KF-VARIABLE-BEADING BIT
KG-CROWN MOULDING BIT
KH-HANDRAIL BIT

L-Rail line/line Knife

LA-TABLE EDGE BIT
LB-TABLE OGEE BIT
LC-TABLE CORNER BIT
LD-HANDRAIL CLASSICAL BIT
LE-TABLE CURVED ROUND BIT
LF-TRADITIONAL BIT
LG-15Degree HORSE NOSE BIT
LH-ROMAN CLASSICAL BIT
LI-TRADITIONAL BIT
LJ-TABLE EDGE BIT

M-Combination of high handrail Knife Bottle

MA-HANDRAIL BIT
MB-HANDRAIL BIT
MC-HANDRAIL BIT

N-Polymorphic classical Knife

NA-VERTICAL BIT
NB-RAISED PANEL BIT
NC-PANEL BIT
ND-15 degrees plate type knife
NE-45 Degree PANEL BIT
NF-UNDERMOUNT BOWL BIT
NG-S-TYPE BIT

O-Knife nail-like model lines

OA-FINGER GRIP BIT
OB-DOUBLE FINGER BIT
OC-A TWO SLOPES FINGERNAIL BIT
OD-SIDE FINGER NAIL TYPE BIT
OE-ARCH TYPE ROUTER BIT
OF-ARCH TYPE ROUTER BIT
OG-FINGER NAIL BIT

P-T-tenon Knife

PA-DRAWER LOCK BIT
PB-T-TYPE SLOTTING CUTTER
PC-KEYHOLE BIT
PD-T-SLOT ROUTER BIT
PE-T-TYPE BIT WITH BEARING
PF-HINGE BIT
PG-JOINT BIT
PH-MITER BIT
PI-T-SLOT ROUTER BIT
PK-Long households knife

Q-T-tenon cutter combination of class

QA-BEAD & FLUTE BITS
QB-TONGUE & GROOVE BITS
QC-STYLE & RAIL ASSEMBLES
QD-STYLE & RAIL ASSEMBLES
QE-STYLE & RAIL ASSEMBLES
QF-STYLE & RAIL ASSEMBLES
QG-TONGUE & GROOVE BITS

R-Door Knife

RA-Tanaka knife
RB-Oblique arc knife
RC-Cascade knife
RD-Curved knife
RE-Feng cutter
RF-Qingping knife
RG-Type clever knife
RH-Thin round knife
RI-Liu knife edge
RJ-Kocho knife
RK-CLASSICAL PLUNGE BIT
RL-CLASSICAL PLUNGE BIT
RM-CLASSICAL PLUNGE BIT
RN-CLASSICAL PLUNGE BIT
RO-15Degree HORSE NOSE BIT
RP-10Degree HORSE NOSE BIT
RQ-OPEN-END CARVING BIT
RR-FLAT BOTTOM CUTTER

T-Solid Carbide cutting knives

TCT-SOLID CARBIDE STRAIGHT BIT

U-Other series

UA-Spindle machine flat knife, four planing knives
UB-Finger Joint Cutter Series
UC-Circular knife
UD-Speaker Knife
UE-A knife series
UF-Helical flat knife
UG-Small door knife (knife cabinet) series
UH-Ceiling moldings, edge line series
UI-Wallboard knife
UJ-Door Knife
Uk-Spiral Square Series
UL-Staircase handrail wire cutter series
UM-Frame Line Cutters
UN-Edge Knife
UO-Large door knife series
UP-Slot Knife
UQ-Flooring Knife
UR-Cabinet plate knife series
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