| Murakami Seiki HOME > Factories and Equipments |
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About Equipments |
Murakami Seiki performs not only parts machining but enables to process up to assembling.
In order to perform ultra-precision assembling, we must provide exact precision of the machining parts. However, in-process inspection, the accuracy of the inspection equipments, and the technical skills of experienced craftsmen are required as well.
Our company succeeded in developing its own automatic machine and it has enabled us to improve efficiency and to enhance the precision of machining processes. |
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List of equipments in possession |
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Inspection equipments for assembly |
| Manufacturer / Maker |
Name of the equipments |
| Taylor Hobson |
Talyvel 5 |
| Taylor Hobson |
The ULTRA Photo Electronic Autocollimator |
| Manufacturer of machine tools |
Type |
machining domain (X*Y*Z) |
Number of equipment |
 Machining Center |
| Mori Seiki |
NV4000 DCG |
600*400*400 |
2 |
| Mori Seiki |
SV-503 |
800*500*500 |
2 |
| Mori Seiki |
NV5000 α1 |
800*500*500 |
1 |
| OKUMA |
MB-66VB |
1500*600*600 |
2 |
| OKUMA |
VR-40 |
500*350*300 |
1 |
| Horizontal NC milling machine |
| Yamazaki Giken |
YZB-88NCR |
1000*800*650 |
2 |
| Vertical NC Milling Machine |
| Yamazaki Giken |
YZ-500SG |
1000*500*700 |
1 |
| Shizuoka |
SV-CHP |
700*300*450 |
2 |
| Shizuoka |
AN-SRN |
750*450*450 |
1 |
| Wire EDM machine |
| Mitsubishi |
F20 (processesable for a wider range) |
500*350*450 |
1 |
| Mitsubishi |
F20S |
500*350*300 |
1 |
| CNC EDM machine |
| Mitsubishi |
EA12V |
400*300*200 |
1 |
| Mitsubishi |
EA28V |
650*450*300 |
1 |
| SODICK |
AM3L |
300*200*250 |
1 |
| CNC high speed pinhole EDM machine |
| Mitsubishi |
MEMH43S |
400*300*300 |
1 |
| CNC lathe |
| OKUMA Vertical turning lathe |
V40R |
φ400*450 |
1 |
| Mori Seiki |
SL-200 |
φ200*300 |
1 |
| Mori Seiki |
NL-2500 |
φ250*1000 |
1 |
| Mori Seiki |
SL-25 |
φ250*350 |
1 |
| CNC all-around cylindrical grinder |
| Okamoto Machine Tool |
OGM-3100 |
φ250*950 |
2 |
| SHIGIYA |
GPL-30 |
φ250*600 |
1 |
| CNC surface grinder |
| Okamoto Machine Tool |
PSG 105 EXB |
1000*500*400 |
1 |
| Okamoto Machine Tool |
PSG 63 EXB |
600*300*300 |
2 |
| Okamoto Machine Tool |
UPZ 525 ExII |
500*250*250 |
1 |
| Ichikawa Factory |
RCB－402 |
φ1100(mm)*H400(mm) |
1 |
| CNC molding ultra-precision plane grinder |
| Okamoto Machine Tool |
UPZ 420 F |
300*200*250 |
1 |
| Three-dimensional measuring machine |
| ACCRETECH |
SVA fusion 9/6/6 |
850*600*600 |
1 |
| Tokyo Seimitsu |
XYZAX VF600A |
600*400*400 |
1 |
| 5 axis / sided machining |
| HERMEL |
C30U |
650*600*500 |
1 |
| Other equipments |
| General purpose milling |
Shizuoka, 3 machines |
| General purpose lathe |
Takizawa, 1 machine
Mori Seiki, 2 machines |
| Honing machine |
Fuji honing, 1 machine |
| Ball machine |
4 machines |
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New equipments |
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FAYb laser marker |
| Printing range |
90mm×90mm |
Letter setting
(letter height, width) |
0.2～90mm
(0.001mm space setting is possible) |
Print pitch
(letter pitch, line pitch) |
0～90mm
(0.001mm space setting is possible)
Fan form : -180°～+180°
(0.01°setting is possible) |
| Character arrangement |
Straight line, proportional, equally distributed, and a fan form |
| Character type |
English capital letter and small letters, numbers, Japanese characters(Katakana and hiragana), Japanese symbolic characters; Kanji (JIS 1st and 2nd level), symbols, and registered characters(up to 50 types) |
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Vertical lathe V40R |
| Maximum processing diameter |
φmm |
400 |
| Maximum processing length |
mm |
450 |
| main shaft rotation speed |
min-1
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2,500 |
| Knife stand stand |
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V12 |
| Single shaft engine |
kW |
VAC22/18.5 |
| Size of the indispensability floor |
mm |
1,705×2,400 |
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5 axis/ sided machining HERMLE C30U |
It is German 5 simultaneous axis-processing machine.
This machine enables high-precision processing of complex shapes.
This can also perform such complex three-dimensional shape processing, electronic and mold components, artificial bones, aerospace components, components for power generation and complex materials etc. With this machine these are processable at high speed and precisely.
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In order to prevent a warp
The mainframe of this machine are made of artificial stone. The artificial stone is elastic because it is made from special materials such as grains of stones.
Because the mainframe is made of artificial stone, the limit for the gross weight of the processing goods can be up to 1 ton.
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The spindle which can control thermal error
In general,a spindle of the processor spins at high speed and this brings about a thermal expansion which is the cause of precision lose.
Japanese processors are often installed with water cooling system and this causes the precision lose in machining as well.
As one of the unique characteristics of C30U, 6 sensors are positioned at the spindle which can sense margins of error caused by thermal expansion.
With that data, the machine automatically recalculates within its own parameter to control functions. This enables a high-precision machining.
Astounding machining speed
Its superiority in processing speed to other processors is another characteristic of this machine.
Shortening the machining time brings about thermal expansion which causes precision lose. However C30U enables machining without losing its precision since it can process as it calculates margin of error caused by thermal expansion.
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Techniques of High-precision Assembling |
Murakami Seiki performs not only parts machining but enables to process up to assembling.
In order to perform ultra-precision assembling, we must provide the exact precision of the machining parts. However, in-process inspection, the accuracy of the inspection equipments, and the technical skills of experienced craftsmen are required as well.
Our company succeeded in developing its own automatic machine and it has enabled us to improve efficiency and to enhance the precision of machining processes.
If you are hoping to ‘improve the precision of your precision assembling’, feel free to contact us anytime.
 Quality assurance system |
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Factory |
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We reach the solutions to various subjects and problems
by combining different machining techniques. |
We have solved a variety of subjects with precision assemblies and machining. We succeeded to meet customers' diverse demands as well. In order to become a partner for manufacturer, we put efforts to develop new techniques and equipments, and to inherit our traditional Kisage-technique for scraping.
About Kisage-technique
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