Higher accuracy produces greater profitability

Linear Motor Drive

New technologies for micro high speed machining targeting sub-micron accuracy

Reliable spindle and construction to avoid thermal distortion

YASDA Micro Center YMC430 is a state-of-the-art

high-end machine, which fits the rapidly

increasing demands for ultra-precision and high

surface quality milling in the fields of medical

equipment parts, IT related parts, high precision

miniature die and mold etc, where the

technologies are constantly advancing.

All controlled axes (X, Y and Z) driven by high-

speed linear motors, highly rigid symmetric frame

design and a unique thermal distortion stabilizing

system which sustains machining accuracy in long

cycle time operation, will assure unsurpassed high

accuracy and excellent motion performance in

various applications. YMC430 provides the best

solution for future demands for ultra-precision and

high surface quality machining.

1 YASDA MICRO CENTER YMC430 Linear Motor Drive

The best solution for future demands for a more sophisticated and diversified

machining process

Work piece examples

Reflector formElectrode for insert chip Gear punch

With the controlled axes driven by linear motors and the highly rigid machine construction, YMC430 realizes

smooth motion and unparalleled machining accuracy and surface quality in machining very small work

pieces, which need fine motion control.YMC430 is also ideal for machining hardened material.

In comparison with a conventional machining center using ball screws, YMC430 using linear motors provides

significant machining time reductions even in the same machining program.

Linear motor driven controlled axes（X, Y and Z）and a highly rigid body provide

the highest in its class, for speed, precision, and surface quality machining

YMC430 - Unsurpassed speed and quality

Significant reduction in machining time

Gear moldFilter mold Hydro dynamic bearing punch

1 YASDA MICRO CENTER YMC430 Linear Motor Drive

Highly rigid frame design is the icon of YASDA

precision centers. YMC430 employs innovative

H-shaped column analogous to a double

column design.

This design increases flexural and torsional

rigidities shortening the line of force from

spindle to table.

The spindle head is positioned in the centre of

the columns so that the entire body forms a

highly rigid Z-axis frame.

The spindle head employs a cylindrical form,

which is symmetric in cross and horizontal

directions. The influence of thermal

deformation in the X and Y-axis directions is

minimized maintaining mechanical rigidity.

Synchronized with the machine temperature

cooled oil is circulated in the spindle head.

This system sustains high precision machining

over a long period.

The sides of the bed are raised allowing a larger thickness

with an integrated design with the column to further ensure

high rigidity.

The moving light-weight body is positioned in the center of

the bed with a lower center of gravity so as to minimize

vibration arising from the reaction force in high-speed feeding.

This arrangement also supports high precision machining and

the lower position of the table surface allows a more

comfortable work setting position.

Symmetrical H-shaped column

Symmetrical and cylindrical spindle head

The center of the spindle is

maintained even during

thermal expansion.

Bed

X-Y table

High rigidity from the H-shaped solid column four direction symmetry and lower center

of gravity design for maximum stability

Symmetrical frame design leads to high rigidity

Construction of YMC430

This original column design is stable in temperature change never allowing attenuation

on the line of force, the key to high-precision machining

High-speed, stability and high class machining

backed by original design technology

2

Positioning accuracy（Actual value） ISO 230-2（1997） Motion performance data（X-Y axes）

In case of the standard single column and C-shaped frame construction, the long overhang from the front side of the

column to the spindle is difficult to achieve sufficient rigidity. Also disposition in Y and Z-axis direction attributing from

asymmetric shape in the front-back direction is an unavoidable weak point.

YMC430 employs an analogous shape to a double column, so called H-shaped column having parallel lines of force

due to its characteristics. This symmetric design efficiently stabilizes thermal changes in four directions. This design

successfully achieves both stable machining accuracy and high rigidity at the same time.

0.8

0.6

0.4

0.2

0.0

- 0.2

- 0.4

- 0.6

- 0.8

-1

1

0.0 50 100 150 200 250 300 350 400

90°

0°180°

270°

・Long overhang

General

C-shaped frame

Force flow

・Analogous construction　to a double column

YMC430 with symmetric

H-shaped column

0.356μm 0.508μm 0.316μm

Y X Z

X-axis two directional positioning accuracyand repeatability

Roundness 0.60μm（Actual value）

Force flow

A:Accuracy

The line of force of column

Machine position（mm）

Erro

r（μm）

YASDA MICRO CENTER YMC430 Linear Motor Drive

YMC430 employs ultra-precision linear guides, which

reduces the problem arising from waving. Together

with the high-precision assembling technology and

linear motor drive, the highest straightness and

smoothness in axis movements are achieved.

3

X-axis straightness in vertical direction

*Measured with a 100mm optical flat

0.124μm / 100mm

0.088μm / 100mm

3

- 2

- 1

0

1

2

- 3

Ultra-precision linear guides

Straightness（Measured data）

YasdaÕs high-precision assembling technology and the linear motor drive provide

the ultra-precise movement

The smooth guides that enable 1/10,000mm step of

ultra-precise movement

0.448μm 0.220μm 0.373μm

X Y Z

Horizontal direction

0.124μm 0.088μm 0.464μmVertical direction

0 3010 20 40 50 60 70 80 90Travel distance（mm）

Y-axis straightness in vertical direction

3

- 2

- 1

0

1

2

- 3

0 3010 20 40 50 60 70 80 90Travel distance（mm）

Displacement（μm）

Displacement（μm）

Irrespective of the type of tool or rotation speed, YASDA'S spindle realizes

unsurpassed precision machining for long periods

Spindle Ð The key to high accuracy and high surface quality

4

Verification of high precision machining

The 40,000 min-1 spindle, which

was developed to target low

vibration and high reliability, is

precisely assembled in order to

realize constant high precision

machining for long periods.

1. Prepare a work piece with 2μm step as described below.

2. Set 6 different tools in the automatic tool changer.

3. After changing each tool by automatic tool changer, set the

tool positions at 1μm above the datum（0 level）using a tool

length and diameter sensor. At this Z position（+1μmposition）, cut toward left（+2μm level）.

　Each tool is purposely set with a different cutting condition.

Cutter marks were only apparent on the +2μm level, none of

the tools left a cutter mark on the 0 level.

According to the result, YMC430 verified milling performance

within 1μm tolerance irrespective of type of cutter and

rotation speed.

High stability Large capacity

Material: A5052

<Result>

<Procedure>

2μmdifference Milling fromMilling from

1μm abovem above0 level0 level

Milling from1μm above

0 level

+4

+4+2

0-2

-4

+2

0

-2

-4

φ6mm（10,000min-1）

φ1mm（30,000min-1）

φ0.2mm（40,000min-1）

R3mm（10,000min-1）

R0.5mm（30,000min-1）

R0.1mm（40,000min-1）

Milling order

（μm）�

*Key point of verification

If the Z-axis positioning is not

accurate enough, cutter marks

will appear on the 0 level or +2μmmay not be milled.

Even with a bigger diameter tool

for the spindle taper HSK-E32,

YMC430 can easily generate high

cutting performance.

（Example）�φ12mm square end mill

S1600min-1, F320mm/min.

Ad0.5mm, Rd12mm

Material: NAK80（HRC40）

Squareendmill

Ballendmill

Cooling of spindle head

Cooling of column

Oil pan

Cooling of Z-axis base

Cooling of

Y-axis linear motor

Cooling of

X-axis linear motor

Cooling of Z-axis linear motor

YASDA MICRO CENTER YMC430 Linear Motor Drive5

An additional oil pan completely covers

the bed surface in order to prevent heat

generating objects such as coolant and

cutting chips from coming into contact

directly with the bed surface. This

meticulous thermal distortion measures

enables stable high precision machining

over a long period of operation.

Thermal distortion stabilizing system for stable high-precision machining

Advanced technology for thermal stability

By circulating temperature-controlled oil through the

inside of the column, the spindle head, X-Y table etc,

YMC430 regulates thermal disposition in each axis

leading to stable high-precision machining.

Also the column due to its symmetrical H-shaped

design in four directions regulates its distortion

following thermal change.

YMC430Õs thermal distortion stabilizing system

Highly reliable automatic tool changer is equipped as standard Vibrations from auxiliary

units, hydraulic devices etc are under control

Details of YasdaÕs machine option design developments

Separation of auxiliary units�Devices such as the pumps, the control unit, etc. are the sources of

vibration and heat. These devices are consolidated into one unit and set

up on the rear of the machine. After installation, this unit is mechanically

disconnected from the machine so that vibration to the machine is

insulated.

Hydraulic device�Actuation by the hydraulic device is eliminated as much as possible and

the device itself is downsized. The hydraulic device is actuated only

when necessary and start-up is instant. Hydraulic pulsation is not

transmitted to the machine through pipes, etc. so that the machining

surface is kept intact.

6

OUTLINE

unit:mm

Armless type automatic tool changing unit�The tool magazine moves towards the spindle allowing the tool to be

changed without an arm. This simple design allows small mechanical

movements and makes it a very reliable system.

Compact 90-tool tool changer

（Option）�The large capacity compact 90-tool

tool changer is available as a factory

installed option. The matrix type

magazine fits the standard tool

changing unit space. This is possible to

set up without expanding the

installation area.

1700

520

140

1700

2670

2295

520 750 2290 750352 2290 750

750

1700

800

Thermal distortionstabilizing system

Space forSpace for

maintenance

Space for

maintenance

SPECIFICATIONS

1. Specifications of base machine

2. Standard equipment

1）Travel X-axis travel（Cross movement of table）�

Y-axis travel（Longitudinal movement of table）�

Z-axis travel（Vertical movement of spindle head）�

Distance from table surface to spindle nose face

400mm

300mm

250mm

150～400mm

2）Spindle Spindle speed range

Spindle drive motor

Spindle taper

200～40,000min-１

AC7.5kW（Continuous）

HSK-E32

3）Table Table working surface

Table loading capacity

Table surface configuration

450mm× 350mm

100kg

3T-slots, width 14mm H7, pitch 100mm�

�

5）Automatic tool changer Tool shank type

Tool storage capacity

Maximum tool diameter / length / mass

HSK-E32

32

φ50mm /120mm /500g

6）Mass of Machine

7）Electric power requirement

8）CNC unit

Approx. 8,000kg

26kVA

FANUC 31i -A5

1）Optical scale feed back

2）Cutting oil unit（AA type）

3）Splash guard

4）Thermal displacement compensation for Spindle

X, Y and Z axes 0.0001mm resolution

1 flood nozzle, standard tank capacity 110L

Manual door with roof, with one fluorescent lamp

Standard data

3. CNC standard options

1）Least input/travel increment

2）Display

3）Program storage length

4）Custom macro

5）Number of registerable programs

6）Automatic corner override

7）Tool offset pairs

8）Tool offset memory

9）Run hour and parts count display

10）Extended part program editing

0.0001mm�

10.4" color LCD�

320m（128KB）�

Common variable :100�

250

�

64 pairs

C memory

4）Feed rate�

�

Rapid traverse rate

Cutting feed rate

Least input increment

20,000mm/min

Max.10,000mm/min

0.0001mm

Catalog No.YMC430 SPC0902-EPrinted in Japan 11122009

SPECIFICATIONS（Optional）

1. Optional equipment

1）High-speed spindle（HSK-E25）

2）Number of stored tools addition

3）Signal tower（Multilayer signal lamp）

4）Cutting fluid temperature control unit

5）External mist coolant

6）Oil skimmer

7）Washing gun

8）Mist collector

9）Automatic tool length compensation and tool breakage sensor

10）Tool length/radius compensation and tool breakage sensor

11）Automatic measuring system

12）High-speed machining function（YASDA HAS-3 system）

13）Thermal distortion stabilizing system

14）Weekly timer

15）Thermal displacement compensation for spindle

16）AWC door

17）Robot interface

AC10kW（2 min.）, Max.50,000min-１

Total: 90

Red, yellow, green（Flashing）�

Manufactured by Bluebe/1 nozzle

Oil Pure type

One place（Operator position）

1 unit

Manufactured by BLUM/NT-H type（Touch and laser）

Manufactured by BIG Daishowa / Dyna Vision Pro

Manufactured by Renishaw / Touch probe OMP400

Maximum feed rate 10,000mm/min

With weekly timer

Individual data

Compatible with System 3R and EROWA

2. CNC Options

1）Part program storage

2）Extensional number of registerable programs

3）Background editing

4）Helical interpolation

5）Conical / spiral interpolation

6）Inch / Metric conversion

7）Scaling

8）Coordinate rotation

9）Programmable mirror image

10）Rigid tap

11）Optional block skip

12）Tool offset pairs

13）Custom macro common variable

14）Addition of work piece coordinate

15）Tool management

16）Normal direction control

17）Cs contouring control

18）Smooth TCP

19）Tilted working plane command with guidance

20）Work setting error compensation

21）Ethernet function

22）Data server function

Total:256KB, 512KB, 1MB, 2MB, 4MB, 8MB

Total: 250, 500, 1,000, 2,000, 4,000

G02, G03

G02, G03（Helical interpolation is required）�

G20, G21

G50, G51

G68, G69

G50.1, G51.1

M29 (G84, G74)

Total: 9

Total: 99, 200, 400, 400, 999 sets

Total: 600

48, 300 sets

G40.1, G41.1, G42.1

G43.4, G43.5

G68.2, G69, G53.1

G54.4 Pn

FOCAS2 / Ethernet

Fast data server, Capacity 1GB

Catalog No.YMC430 0901-EPrinted in Japan 15092009

＊Export of the products and associated software, and related services are subject to prior approval of

　the Japanese government according to ÒForeign Exchange and Foreign Trade LawÓ.

www.yasda.co.jp

YASDA PRECISION TOOLS K.K.

Main Office&Factory:

1160Hamanaka,Satosho-cho,Okayama,719-0303,Japan

PHONE:+81/865-64-2511 FAX:+81/865-64-4535

Representative Office:

Fritz-Vomfelde Strasse 34,D- 40547 D�sseldorf,Germany

PHONE:+49/211-53883-218,-216 FAX:+49/211-53883-174

YASDA PRECISION AMERICA CORPORATION

62 North Lively Boulevard Elk Grove Village,IL60007 U.S.A.

PHONE:+1/847-439-0201 FAX:+1/847-439-0260

YASDA PRECISION TOOLS(SHANGHAI) K.K.

Rm.1001 Orient International Plaza Part(C),

No.85 Lou Shan Guan Rd,Shanghai,China

PHONE:86-21-62700955 FAX:86-21-62700970