PARTS DIVISION | 株式会社桜井製作所

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 the female die are machined in sharp corners.

Eight-tiered sphere

Milled from a single piece of stock. Each component sphere has a minimum clearance of 0.5 mm, and is adotriacontahedron (formed ofpentagons and hexagons) on the outer surface, and a sphere on the inner surface.

Thin-ribbed sphere

The ribs have a thickness of 0.4 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

機械名称主軸ﾃｰﾊﾟ穴メーカー名型式台数 X軸 Y軸 Z軸 ATC本数

横形ﾏｼﾆﾝｸﾞｾﾝﾀｰ 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

立形ﾏｼﾆﾝｸﾞｾﾝﾀｰ 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

加工設備
機械名称	主軸ﾃｰﾊﾟ穴	メーカー名	型式	台数	X軸	Y軸	Z軸	ATC本数
横形ﾏｼﾆﾝｸﾞｾﾝﾀｰ	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
立形ﾏｼﾆﾝｸﾞｾﾝﾀｰ	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