KURAKI CO LTD

Ｋ Ｐ SERIES
KURAKI CO LTD
http://www.kuraki.co.jp
1
Company Profile
Company Name
Head office
Capital
Establishment
President
Employees
Products
Sales
倉敷機械株式会社
KURAKI CO., LTD.
1-2-1 Jooka, Nagaoka, Niigata, 940-8603 Japan
Phone:+81-258-35-3040 Facsimile:+81-258-35-6249
954 Million Japanese Yen
Aug. 1949
Akio Fujikawa
persons male
、female
machine tools, special machines manufacturing &
sales
CAD/CAM system manufacturing and sales
0 billion Yen
year March consolidated
KURAKI Products
Machine Tools
CNC Horizontal Boring &
Milling Machine
CNC Combined Milling Machine
Special Machinery
Information appliance
CNC Notching Machine
Internal Precision One-pass
Honing Machine
system
Gun Drilling Machine
3
Machine Tools
4
CNC Horizontal Boring & Milling
Machine Series
• Ｋ
Series
ｍｍ
Table shape standard type main boring spindle Dia.
X axis travel
• Ｋ
～
ｍｍ
Series
table shape Space saving type
X axis travel
• Ｋ
main boring spindle Dia.
ｍｍ
ｍｍ
Series
Floor type Ultra-Large Machine for Machining Massive and Heavy Work-pieces
• Ｋ
Series
High speed type
More Spindle speed and Faster Feed rates
5
Ｋ
table stroke type CNC Horizontal Boring & Milling Machine
6
Ｋ
Floor type CNC Horizontal Boring & Milling Machine
7
Ｋ
Gun Drilling Machine
8
DEPT. OF TOKKI
PROJECT
Ind. Machinery Mfg. & Sales
9
KIP Series Internal Precision One-pass Honing Machine
KURAKI INTERNAL PRECISION MACHINE
The Perfect Machine for SmallDiameter Precision, Capable of
High-Accuracy Heavy Grinding in
One Pass
PAT.NO US6,551,178B
PAT.NO US6,203,410
PAT.NO 3850345
PAT.NO 3856782
PAT.NO 4548810
登録意匠 1305714,1305715
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CNC Notching Machine
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CNC Notching Machine
Multiple small-lot production machine for machining stator cores and rotor
cores of motors, electric generator, and the like
World’s Speed Leader At 1000 spm While Saving Labor and Retaining High
Accuracy
Many options necessary for manufacturing motors and electric generators12
are fully prepared by the employment of a CNC indexing mechanism.
Information appliance
13
ＹＰ
Machinery
Various
/
SYSTEM
Machine design
Mold design
data handling
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KIP Series Internal Precision One-pass Honing Machine
KURAKI INTERNAL PRECISION MACHINE
The Perfect Machine for SmallDiameter Precision, Capable of
High-Accuracy Heavy Grinding
in One Pass
PAT.NO US6,551,178B
PAT.NO US6,203,410
PAT.NO 3850345
PAT.NO 3856782
PAT.NO 4548810
登録意匠 1305714,1305715
15
Ｋ Ｐ MACHINING
The Perfect Machine for Small-Diameter Precision,
Capable of High-Accuracy Heavy Grinding in One Pass
16
Characteristics of the machining method
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KURAKI ONE PASS MACHINING
Vibration Grinding by Electro-plated wheels in a rotary
cutting motion with a fine vibration
Turning Grinding(Side Grinding)
Tool
Short time heavy grinding is possible
Mirror finishing is possible
Reduce the scratch by Chip
Machining of soft materials is possible(except for copper)
Vibration Grinding(Longitudinal Grinding)
Back Guide part
DOWN
Grinding Stable Roundness
UP
Clear Chip Prevent Clogging
Supply of lubricant is more smooth and
suppress work-piece and grinding wheels
from increasing in temperature
Work-piece
Electro
Deposition
Part
Front Guide
Tool or Work Float
One Pass
One pass honing is the method capable of high
accuracy grinding only by passing a tool into a work
and shortening the machining processes
Provide High Cylindricality,
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Roundness and Roughness
by One Pass
Ｋ Ｐ Characteristic
(Comparison with
conventional honing)
High precision
the precision of Machine tool
The submicron tool expansion in
one touch is possible
with automatic tool expansion device
The floating chuck for tool float
is easy for the tool change and
the preparation
Honing
machine
The volume of
floating is variable
Easy one
touch
expansion
KIP series is produced by
KURAKI's numerous
machine tool development
technologies
20
Ｋ Ｐ Characteristic 2
(Comparison with
conventional honing)
Several times re-plating is
Capable of high precision Easy changing tool
grinding in one pass
non skilled man can possible (except Tungsten
carbide …… low cost
short tact time and handle it
efficiency increase
re-plating
One
down
and up
Can start
operating with
the truing tool
after only
checking the
machining
work diameter
re-plating
re-plating is possible
21
Ｋ Ｐ Characteristic 3
(Comparison with
conventional honing
Φ6ｍｍ、work thickness
ｍｍ machining is possible
～
Machining the blind hole work is
possible
Blind hole
The thin work
Machining works with
keyway ,various grooves and the
through hole is possible
keyway
22
Ｋ Ｐ Work Machining Results
Shaft fork φ12x23L
Valve with φ10
Pinion gear φ17x18LPinion planetary φ16x19L Gear φ44x40L
Con rod φ24
Gear φ18x15L
Ceramic sleeve φ2.5
23
Ｋ Ｐ EQUIPMENT
24
KIP Characteristic of Equipment
The high speed and precision
machining by the main shaft
servomotor are possible
The high accuracy positioning is
possible by forwarding servomotor
＋ball screw drive
The long life , high stiffness
and high precision slide
aspect consittution
KBH-22
The long life and
high maintenance
main shaft head
ＫＰ
The high stiffness and
precision main shaft
KURAKI is the machine tool maker
produced by over 50 years machine tools
development technology
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ATC＋ Automatic Tool Expansion Device
ATC10PCS
Patent pending
ATC functions:
tool expansion volume control
every load control of tool/warning
function
feed back function
key-in of each program name
are attached
KIP-300A UNIT
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Full automatic bore size control system
Rotary shaft for
expansion
J
me
s
ma c
me
expansion unnecessary
required
a za
Setting is possible by a judgment
e e μm
s ze a
expansion
ma c
Tool
Mac
KIP-300 Unit
e
e meas
Measuring instrument Air micro
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加工ワ ク 概要実績
High Efficiency Small Bore One Pass Machining Example
Work Size
Ф
ｘ
L ｍｍ
Ф
ｘ
L ｍｍ two sizes
Work material : SUS420J2, Hardness: 530～630HV
Test result each good
Target(Ф1.6mm)
Cylindricality : 2μm
Surface roughness:
Rmax 1.6μm
Result
Roundness: 0.69μm
Cylindricality: 0.8μm
Surface roughness: Rmax
1.175μm
◇材質 鋳鉄、焼入れ鋼、
ﾆ 合金
ステンレス、セラミック、銅合金etc
◇品名 自動車部品
ｪ ﾀ 、
油圧機器 ﾊ ﾌ ﾎ ｨ
家電 ﾛ ﾀ 、ﾊ ﾌ
セラミック関係
ﾌ 、ﾌ
、ｺ ﾛ
ｭ etc
Machining precision and work
quality are improved and stable.
Tact time become shorten and
stable
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Development of The 100Hz Frequency Vibration
Purpose of The Development
Reduction of Tact time
Improved by
Cost Reduction
the increase
Machining Improvement of Frequency
vibration?
Big effect by the increase of
Frequency vibration
Success of 4
times increase
of Frequency
Vibration as
compared with
KURAKI
conventional
type
Chip clearance improved→infeed speed increased
Machining efficiency: stock removal increased per
time
The frequency vibration durability increased
Comparison of Vibration condition
conventional
6000
1.4
1.2
1.2
1
0.8
0.6
1500
0.4
変位　[mm]
変位　[mm]
1500
1.4
developed
1
0.8
0.6
6000
0.4
0.2
0.2
0
0
0
0.02
0.04
0.06
時間　[sec]
0.08
0.1
0
0.02
0.04
0.06
時間　[sec]
0.08
0.1
Problem of the machining effect
W
s zeΦ 6,
machining with 25Hz、S490 、F150
Result The loading occurred and machining
is impossible
New domain few in before
100Hz、S490 、F200～
machining is possible
Under present machining
data collection
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ATC UNIT KIP-300A
＜ATC UNIT SPEC.>
Tool storage number:
Changing time: about
pcs
SEC
The process integration of one
pass machining is possible
30
KIP High Accuracy and High
Trusted Tool Technology
31
KIP High Accuracy and High Trusted Tool Technology
Design Tech.
Important tools are designed by rich
experienced Kuraki engineer.
The most suitable tools are designed by the
cooperation with main Japanese Electroplated
makers.
* Tools are designed by 3 dimensional analysis
software according to customer’s request.
Inspection Tech.
Kuraki has 3 dimensional measuring instruments,
roundness measuring instruments and surface
roughness measuring instruments for work
measuring and evaluation and small diameter
boring measuring instruments. The highly precise
measurement is possible, and tool evaluations are
always possible immediately.
confirm the electroplated deposition of a
particularly important abrasive, the consumption
situation directly by a digital microscope and
inspection, and evaluation are possible.
Mfg. Tech
High accuracy tools are produced and controlled
by the rich experienced production control
engineering staff .
Cooperation factories have the most suitable
highly accuracy facilities.
Cooperation with main Japanese abrasive grain
and electroplated makers.
The important truing is done by rich experienced
Kuraki staff by Kuraki exclusive facilities.
Test Machining Tech.
KURAKI is equipped with each KIP-50, 300 and 300H
unit having "the isolated trial manufacture room".
Timely tool test processing depending on the
processing content of the visitor is possible.
The high accuracy tool testing is done by Kuraki rich
experienced machining technology staff.
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Kuraki is a machine tool maker.
The development of High efficiency Machining technology
High Stock Removal Machining Technology
Ｋ
～
φ
Stock removal
* New processing method beyond the
conventional common sense.
μm
e a
e am e
The example oｆ one
time machining stock
em a
μ
New suggestion of the high efficiency
machining of Kuraki
* Possible to machine from rough
grinding to finishing honing by KIP one unit.
Kuraki one
pass honing
machine
Conventional
honing machine
Internal grinding
machine
One unit
The process collection
is possible to one unit
Patent pending
33
Ｋ Ｐ Series
KIP-50
KIP-200/200A
KIP-300/300A
ATC装置
Machining diameter
φ
φ5
φ
KIP-300A
φ
KIP-50/
φ
A(ATC unit
KIP-200/200A
ATC unit
KIP-300(~φ35 300A)34
Automation example
KIP-50 Automatic Unit
＜Unit spec.＞
KIP unit
1 set
Transfer unit
1 set
Coolant unit
1 set
Operator panel(touch panel) 1 set
Control panel
1 set
＜Machining work-piece>
Name
Tappet
Machining diameter
φ10
Machining process 1 process
35
Automation example
KIP-50 Automatic Unit
＜Unit spec.＞
KIP unit
1 set
Transfer unit(parts feeder) 1 set
Coolant unit
1 set
Operator panel(touch panel) 1 set
Control panel
1 set
＜Machining work-piece＞
Name
Sleeve
Machining diameter φ9.01
Machining process 1 process
36
Automation example
＜Unit spec.＞
KIP unit
2 sets
Pin gage unit
set
Air-micro unit
set
Operator Panel(touch panel )
Control Panel
set
KIP-50
heads Automatic Unit
set
＜Machining work-piece＞
Name
link
Machining diameter φ7.5&φ7.55
Machining process 1 process
37
Automation example
KIP-50 3 heads Automatic Unit
＜Unit spec.＞
KIP unit
3 sets
Transfer unit (Palletizer)
1 set
Coolant unit
1 set
Operator panel(touch panel) 1 set
Control panel
1 set
＜Machining work-piece＞
Name
Sleeve
Machining diameter φ6.30
Machining process 3 process(rough.
medium & finish)
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Automation example KIP-300
heads & 2 spindles Automatic Unit
＜Unit spec.＞
KIP unit
sets
Multi-spindle attachment
sets
Boring measuring unit
set
Transfer unit
1 set
Operator & Control panel
set
＜Machining work-piece＞
Name
Gear
Machining diameter φ20.0
Machining process 2 process(rough & finish)
Tact time
12.0sec 2pcs
39
Other Automatic Units
KIP-300 2 heads model with automatic
transfer unit
KIP-300 2 heads with automatic
transfer unit
KIP-50 1 head model with
automatic transfer unit
KIP-300 1 head model with
automatic transfer unit
KIP-50 2 heads with automatic
transfer unit
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Summary
41
The comparison of other machinery method
ＫＰ
Horning
Internal
Remarks
Grinding volume
○
○
◎
Exclusive tool＋Vibration grinding＋
Coaxial correction
×
×
◎
Correction of the coaxial degree and
straightness
Machining materials
◎
△
△
Un-harden Aluminum . hard material
except for pure copper
Machining stability
◎
○～ ◎
○
Time. Size accuracy machine accuracy
Machining speed
◎
△
×
Operability
◎
△
×
Trued tool ＋automatic expansion
Machining shape
◎
○
◎
Small diameter Variant taper/step/etc
Loading
◎
△
×
Vibration grinding
Large item small
scale production
△
○
○
Cost merit
○
△
×
◎
○
△
Total Evaluation
◎
up & down
work≒
/ multi up & down
tool Re-EP is OK
tool(KIP
Initial and running cost
Excellent ○ Good △ Acceptable × N.G
42
Clients
KIP Feature
Cost Reduction、 Workload reduction、 Shorten delivery,
Manpower saving、Quality stabilization、 saving space、 High reliability
The design is reflected high machine tool development
technology
Automatic expansion tool
Various EP technology
Rough grinding tool technology
JIG
Various suitable jig technology
*The jig is designed and controlled by Kuraki
* Floating jig technology
The tool is designed and controlled by
Hardware
ATC
*High reliability and cost performance
Automatic tool expansion
device
oil hole
Full automatic system
TOOL
Kuraki
The small diameter φ1.6 expansion tool can
be produced
Machining method , Machining technology, various know how
High accuracy machining by one pass
Wonderful machining ability by Longitudinal and vibration grinding
The stability of tact time and quality
Applicable to a variety of materials including steels, aluminum, ceramics and sintered materials
Applicable to a variety of work shape, keyway grooved hole, through hole, thin work, variant ,seat and tapered work shape
software
Available by a substitute of the internal
grinding by the development of the rough
grinding technology( stock removal 200μｍ -
43
Total technology support is provided by a maker Kuraki
MACHINERY
Kuraki is the only honing and machine tool maker
Three points of biggest characteristics
Developed by the rich
experienced precision
machine tool maker’s
technology
High accuracy High rigidity
One pass with Automatic
tool expansion
One pass with ATC
Kuraki original
vibration grinding
technology
Increase grinding
ability
Reduce loading
High speed Quality stability
Shorten tact time
Improve Cp level
KIP Series
Longer tool life
Reduce running cost
44
Current and Future Action
High efficiency machining technology
The application of machining variant shape work by only longitudinal vibration grinding
Finish grinding of Gear face
Finish grinding of two width
Machining an EP wheel
shape into partner work
with preloading on a gear
face during machining , in
addition to longitudinal
vibration and Z- axis
movement
tool
work
Finish grinding
by longitudinal
vibration
work
tool
By the use of longitudinal vibration
Approach to a new machining method
Expansion to new machining domain and works
45
E N D
Thank you very much
46