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>

<トランスアクスルハウジング自動化ライン>
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JE80580080080040
エンシュウGE580H680080080040
オークマMA-600HB21000900100040
オークマMA-600HBSP11000900100060
三井精機工業HS5A(8-APC)1850700750150
牧野フライス製作所a81nx19009001020187
DMG森精機NH5000273073085054
松浦機械製作所H.Plus-500180080080060
ジェイテクトFH630SX-i11050900105060
桜井製作所SH5A(5軸)170050070030
桜井製作所SH6A(5軸)110001000100060
40エンシュウJE60160060063040
エンシュウJE60S1460060063040
エンシュウJE80S1480080080040
エンシュウGE480H880080080040
エンシュウGE460H260060060040
エンシュウJE50S450050050024
オークマMX-40HA360061061030
オークマMA-40HA160061061030
豊田工機FA45160060056040
紀和マシナリーBH-45164061068040
紀和マシナリーTriple H401451051040020
ジェイテクトFH400J160056063060
30エンシュウGE30H450050050024
エンシュウJE30S850035030016
立形マシニングセンター50エンシュウEV-6501130061076030
エンシュウEV-530382053051030
オークマMB-56VA2105056046020
オークマMX-45VB-R156046045020
オークマMB-46VBE276046046020
OKKVM53R2105053051030
OKKVM5Ⅲ182051051020
ジェイテクトFV1165S3110065060030
30エンシュウEV360360036036024
ファナックa-D21LiB5470040033021
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LB250T1
LB4000EXⅡ2
滝澤鉄工所TCN-3500L101
双頭ロータリーフライス盤桜井製作所2A-8602
2A-12003
2B-12003
5M-12001
5H-15003
多軸ヘッドチェンジングマシン桜井製作所TURREX MHC-4HD5
ホーニング盤桜井製作所35HV1
45HV2
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