Automotive Button Switch Testing Automation with Dual EPSON C4 Robots

Industry > AutomotiveApplication > InspectionSector > Manufacturing

#SwitchTesting#ButtonClickTest#DualRobots#EpsonC4#FunctionalTestAutomation#TaktTimeReduction#FlexibleAutomation#ProductivityImprovement

Process Overview

This solution automates button click testing for assembled automotive switch boxes using two Epson C4 robots.

Fixed-position tests are performed using dedicated equipment, while model-dependent variable positions are handled by articulated robots, enabling short takt time and flexible operation.

Components

Robot	EPSON C4 (x2) 6-axis articulated robot Payload: 4 kg Max reach: 600 mm Weight: 27 kg Repeatability: ±0.02 mm
Peripherals	2-axis linear actuator Pneumatic gripper Part transfer jig Part transfer linear track

Workflow

STEP 1.	Part input
STEP 2.	Move to test position
STEP 3.	Button click test by articulated robot
STEP 4.	Transfer part to next test process
STEP 5.	Secondary test using 2-axis linear actuator
STEP 6.	Discharge after testing

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Key Features

Precise and high-speed operation

Enables precise operations using an industrial robot with high repeatability
Performs fast motion with a maximum joint speed of 720 deg/s, minimizing takt time
Reduces takt time per process by applying two articulated robots and separating test processes

Minimized installation and workspace footprint

Minimizes installation and operating space thanks to the robot’s compact form factor

Flexibility for model changes

Supports flexible 대응 for model changes and multiple product variants by applying a tool changer

Implementation Results

ROI Period	2.8 years
Key Metrics	Increased productivity by minimizing idle time
Client Feedback	Production time was reduced through fast and continuous operation.

Automotive Button Switch Testing Automation with Dual EPSON C4 Robots

Application Field: Industry > Automotive, Application > Inspection, Sector > Manufacturing

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