Individual grinding until 1944

Limit gauges until 1944

 

 

Company-wide centralized grinding until 1954

Air micro-gauges until 1954

Cemented carbide

 

 

 

 

 

 

Transmission tester

 

 

 

Dial gauges until 1964

 

 

 

Automatic size measuring

Ceramics

Throw-away tip

 

 

 

 

 

Engine turn table

 

 

 

Propeller shaft balancer

 

 

 

Crankshaft balancer

 

 

 

Electric micro-gauges until 1974

Cermets

 

 

 

PCV coating

Ejector drill

 

 

 

1972～1978 quick-change holder

Plant-wide centralized grinding

Automatic distortion correction machine

Computerized tool management

Sintered diamond

 

 

Optical and electronic gauges until 1984

Borazon (boron nitride) grinding stone

 

 

 

Borazon sintered compact

 

 

 

 

 

Regrinding by NC machine

 

 

Torque sensor controlled nut runner

 

 

 

 

 

Image processing equipment

Assembly tester with learning function

 

Automatic tool changer (ATC)

 

 

 

ATC for bore rough-boring

 

Dummy weight less unbalance correction machine

 

 

Automation of centralized tool grinding

Differential vibration tester

Ceramic shoe for paper lapping

Roll-formed tap

 

In-line 3D measuring machine

Thermometry correction for internal/external diameter measurement

Leak test leak volume quantification

 

Face-hobbed hypoid gear cutting

 

 

 

 

 

Start of receiving gauges without inspection

Adoption of roll-formed tap

High-speed aluminum milling

 

Measurement and Instrumentation Engineering Division established

CBN grinding stone for crankshaft pin grinder

Double-face fixed holder

Hypoid gear surface-form measuring machine(using gear face diagonal measurement technology)

 

High-speed steel dry hob

 

Small, flexible measuring unit

 

 

 

Mesh transmission error measuring machine

Master-less leak tester

Machine gauge support system

 

 

Flexible setting gauges introduced

 

Synthetic cutting and grinding coolant

Electric impact wrench

 

Engine motoring tester (quantified inspection of sensory test)

Water-soluble paper lapping coolant

Direct tapping on die cast hole (process shortening by single-pass machining)

In-line 3D measuring machine (abolition of specialty gauges and automation of measuring)

Cemented carbide dry hob

 

Vibration holder to cut chips into pieces

 

Loaded balancer (for propeller shafts)

Deburring by brushing and high-pressure washing

In-house hob coating

Mist rolling process

Clean room for tool setting area

 

 

Tool localization promoted at overseas plants

 

Crankshaft bore diameter measurement included in boring process

 

Gear dry cutting

 

Engine noise quantified inspection technology

Standardized equipment, jigs, and tools

Evaluation of production conditions (tools and jigs) by proto-production (proof processing)

 

BT30 holder

 

Completion of Measurement and Instrumentation Experiment Building

Installation and operation of high-energy x-ray CT equipment

CBN grinding stone for bore honing process

Semi-dry drilling of crankshaft oil holes

 

3D development of in-line measuring machine

Roll-formed tap (aluminum parts tapping)

Normal temperature press- fitting of valve seat

 

Elucidation of grinding crack mechanism

 

"All Toyota Measurement Management Network" commenced

Semi-dry machining

Chip suction equipment

Transformation to hard milling for cage window finishing process

 

Liquid honing process (for crankshafts)

 

Technology to visualize molten metal behavior in dies developed (for high-quality die casting)

Visualization technology for sintering process developed

Measurement technology for space temperature developed

Gear pair contact tester

CBN coating tip

 

 

Bore diameter measurement included in the bore honing machine

Mass balance introduced (for lightweight crankshaft)

 

Planet machining (bore finish boring)

 

Flow sensor for aluminum molten metal

One-pass reamer finishing without drilled hole

High-efficiency drilling of aluminum parts

 

Flexible nut runner (at Shimoyama Plant)

 

 

Hard milling for outer groove

 

Semi-dry machining for aluminum parts