
We aim for a true partner company
SAKURAI has built up a great deal of results and knowhow in the processing of various different parts for use in those products that require large, complex processes, and high precision quality as well, thus has met a variety of needs from prototypes through mass production to supplies. The machine tools and lines used for processing our products are flexible enough to handle various types of inhouseproductions so can be restructured into various types of mass production lines.The originality of them is certainly ahead of competitors and helps SAKURAI to accomplish the highly dimensional precision processing by adding the skill of each employee to
the colorful technologies.

<Case study>






General-purpose engine parts
The division is taking charge of processing various different engine parts for use in outboard motor and agriculturalmachinery. It is challenging not only steady product supply but also high precision production in the unit of microns usingthe specialpurpose line.

<Prototypes/Parts>
Always returning to the fundamentals, the division is keepingconfidentiality principles and challenging technology development forprocessing prototypes.
Supplying parts that can withstand the severest environment is aproof that SAKURAI does have the ability to develop technology. Thedivision is always in insatiate pursuit of high precision.

〈5-axis control machining center〉

Sharp corner machining
Both the male die and thefemale die are machined insharp corners.

Eight-tiered sphere
Milled from a single piece ofstock. Each component spherehas a minimum clearance of0.5 mm, and is adotriacontahedron (formed ofpentagons and hexagons) onthe outer surface, and asphere on the inner surface.

Thin-ribbed sphere
The ribs have a thickness of0.4 mm and are arranged inpentagons and hexagons. Theprotrusions of the pentagonshave an anti-bank and can bemilled only with the 5-axiscontrol machining center. The protrusions are also designedto protect the ribs.


<Actual production>

Case study of mass production parts
1) Automotive powertrain AT / MT / CVT case processing | Monthly production | 12,000pcs |
2) Automotive Drive motor case | Monthly production | 4,000pcs |
3)automotive cylinder head processing for V6 engine | Monthly production | 6,000pcs |
4)Other general-purpose engines, outboard motor engines(cylinder head、head cover etc) | Monthly production | 4,000pcs |
5) Agricultural machinery, construction machinery,Cylinder head block processing | Monthly production | 2,000pcs |
6)Motorcycle cylinder processing | Monthly production | 30,000pcs |
Case study of Non-mass production parts
1. Fixed-term on-demand production
Support for customers whose production capacity is overwhelmed by demand, based on contractsranging from around three to twelve months. Examples include
1)Passenger car transmission cases: 16,000 units (8,000 sets) per month under 6-month contracts
2)Cylinder heads for straight-six diesel engines of passenger cars: 100 sets per month over one year
3)Motorcycle cylinder heads: 2,000 units per month over six months
2. Long-term, low-volume production
Support for customers that are outsourcing processes due to reduced output, particularly whereproduction has peaked out and manufacturing equipment and space are being repurposed. Examplesinclude
1)Passenger car transmission cases: 16,000 units (8,000 sets) per month under 6-month contracts
2)Cylinder heads for straight-six diesel engines of passenger cars: 100 sets per month over one year
3)Motorcycle cylinder heads: 2,000 units per month over six months
3. Fabrication of parts and test pieces
1) Automatic transmission valve bodies: 40 units
2) Motorcycle cylinders (old model): 50 units
3)Test pieces to support customer testing of new equipment
4. Fabrication of experimental parts and prototypes
1) Full processing of V8 cylinders blocks for a racing engine
2) Full processing of an experimental CVT transmission case
3)Cutting tests for parts being considered for mass production
<Equipment introduction>
加工設備 | ||||||||
---|---|---|---|---|---|---|---|---|
機械名称 | 主軸 テーパ穴 | メーカー名 | 型式 | 台数 | X軸 | Y軸 | Z軸 | ATC本数 |
横形マシニングセンター | 50 | エンシュウ | JE80 | 5 | 800 | 800 | 800 | 40 |
エンシュウ | GE580H | 6 | 800 | 800 | 800 | 40 | ||
オークマ | MA-600HB | 2 | 1000 | 900 | 1000 | 40 | ||
オークマ | MA-600HBSP | 1 | 1000 | 900 | 1000 | 60 | ||
三井精機工業 | HS5A(8-APC) | 1 | 850 | 700 | 750 | 150 | ||
牧野フライス製作所 | a81nx | 1 | 900 | 900 | 1020 | 187 | ||
DMG森精機 | NH5000 | 2 | 730 | 730 | 850 | 54 | ||
松浦機械製作所 | H.Plus-500 | 1 | 800 | 800 | 800 | 60 | ||
ジェイテクト | FH630SX-i | 1 | 1050 | 900 | 1050 | 60 | ||
桜井製作所 | SH5A(5軸) | 1 | 700 | 500 | 700 | 30 | ||
桜井製作所 | SH6A(5軸) | 1 | 1000 | 1000 | 1000 | 60 | ||
40 | エンシュウ | JE60 | 1 | 600 | 600 | 630 | 40 | |
エンシュウ | JE60S | 14 | 600 | 600 | 630 | 40 | ||
エンシュウ | JE80S | 14 | 800 | 800 | 800 | 40 | ||
エンシュウ | GE480H | 8 | 800 | 800 | 800 | 40 | ||
エンシュウ | GE460H | 2 | 600 | 600 | 600 | 40 | ||
エンシュウ | JE50S | 4 | 500 | 500 | 500 | 24 | ||
オークマ | MX-40HA | 3 | 600 | 610 | 610 | 30 | ||
オークマ | MA-40HA | 1 | 600 | 610 | 610 | 30 | ||
豊田工機 | FA45 | 1 | 600 | 600 | 560 | 40 | ||
紀和マシナリー | BH-45 | 1 | 640 | 610 | 680 | 40 | ||
紀和マシナリー | Triple H40 | 14 | 510 | 510 | 400 | 20 | ||
ジェイテクト | FH400J | 1 | 600 | 560 | 630 | 60 | ||
30 | エンシュウ | GE30H | 4 | 500 | 500 | 500 | 24 | |
エンシュウ | JE30S | 8 | 500 | 350 | 300 | 16 | ||
立形マシニングセンター | 50 | エンシュウ | EV-650 | 1 | 1300 | 610 | 760 | 30 |
エンシュウ | EV-530 | 3 | 820 | 530 | 510 | 30 | ||
オークマ | MB-56VA | 2 | 1050 | 560 | 460 | 20 | ||
オークマ | MX-45VB-R | 1 | 560 | 460 | 450 | 20 | ||
オークマ | MB-46VBE | 2 | 760 | 460 | 460 | 20 | ||
OKK | VM53R | 2 | 1050 | 530 | 510 | 30 | ||
OKK | VM5Ⅲ | 1 | 820 | 510 | 510 | 20 | ||
ジェイテクト | FV1165S | 3 | 1100 | 650 | 600 | 30 | ||
30 | エンシュウ | EV360 | 3 | 600 | 360 | 360 | 24 | |
ファナック | a-D21LiB5 | 4 | 700 | 400 | 330 | 21 | ||
合計台数 | 120 | |||||||
その他設備 | ||||||||
機械名称 | メーカー名 | 型式 | 台数 | |||||
NC旋盤 | オークマ | LB250T | 1 | |||||
LB4000EXⅡ | 2 | |||||||
滝澤鉄工所 | TCN-3500L10 | 1 | ||||||
双頭ロータリーフライス盤 | 桜井製作所 | 2A-860 | 2 | |||||
2A-1200 | 3 | |||||||
2B-1200 | 3 | |||||||
5M-1200 | 1 | |||||||
5H-1500 | 3 | |||||||
多軸ヘッドチェンジングマシン | 桜井製作所 | TURREX MHC-4HD | 5 | |||||
ホーニング盤 | 桜井製作所 | 35HV | 1 | |||||
45HV | 2 | |||||||
汎用旋盤 | 1 | |||||||
汎用フライス盤 | 4 |
<The Customers of PARTS DIV.>
- Ahresty Corporation
- AISIN AW CO.,LTD.
- KUBOTA CORPORATION
- KOFU MEIDENSHA ELECTRIC MFG. CO., LTD.
- JATCO LTD.
- SUZUKI MOTOR CORPORATION
- NIDEC CORPORATION
- HIROSHIMA ALUMINUM IND.CO.,LTD.
- HONDA MOTOR CO.,LTD.
- MITSUBISHI HEAVY INDUSTRIES, LTD.
- YAMAHA MOTOR CO.,LTD.
- YANMAR POWER TECHNOLOGY CO., LTD.
- RYOBI LIMITED