Sanjo Machine’s technology is utilized for automotive engine parts
Rocker Arm is one of valve system component that is attached inside of the cylinder head in engine. The thing necessary to a Rocker Arm is high precision, durability, and lightness because that conveys the movement of the camshaft to a valve.
Connected Rod connects piston and crankshaft in engine and converts piston’s linear reciprocating motion, that occur by the combustion explosive power of engine, to rotary motion. The thing necessary to a Connected Rods is high precision, durability, and lightness because the piston is used in high speed and high pressure.
We are also capable of mass producing parts which require high strength and strict tolerances, such as automobile engine rods.
We offer high accuracy and uniformity through the exacting quality control standards in our rationalized forging system.
The Market for Connected Rods
|Product introduction(Forging Products)|
|Business condition||Press forge||Special feature||Hot forging of accessories variant parts.(prime component weight 100ｇ～1000ｇ)|
|The forge method||Hot forging,Press forging||Lightweight-ized promotion by adoption of titanium, high-strength steel, and non heat treatment steel.|
|Quality of the material||The steel for structures, Aluminum alloy, Titanium alloy||Continuous Production System from a forge material to M/C machining.|
|Component weight||Weight：11kｇ～0.05kｇ, Average 250ｇ||The high precision forge in the system which omitted the back processes including precision punch.|
Continuous Production System
Our continuous production system satisfies customer needs while helping to upgrade quality control and reduce costs. We have succeeded in producing a titanium connected rod that is characterized by its unprecedentedly light weigth. We are also actively engaged in processing high-strength steel and developing efficient forging technologies to simplify post-processing procedures.
Air drop hammer
Fully automatic forging press line
Connected Rods machining line
Digitalized forging molding
We introduced 3D CAD/CAM CATIA in early 1995 and started a direct carving with digitalized high speed processing machine. We realized very minue error in shape between molds by direct carving and we can manage the material weight of connected rods especially. We can assure customers of quality by shortening leadtime with unattended operation for 24 hours and improving manually finished work.
Mold high speed milling
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