Method and device for spot welding
AssigneesHyundai Motor Company, Kia Corporation
InventorSeung Ho Lee
Life of this patent
Estimating the term…
Abstract
A method for spot welding includes applying preset welding heat input to a welding device in correspondence to a welding base material positioned at the welding device by a controller, applying the preset welding heat input to the welding position by moving the welding device by the controller, measuring height variation of the applied welding position through an encoder, and providing target heat input by compensation for a current value that is applied to the welding position by comparing real-time height variation of the welding position measured through the encoder and a gradient set in the controller.
Claims15
A method for spot welding, the method comprising:
- applying, by a controller, a preset welding heat input to a welding device;
- applying, by the controller, the preset welding heat input to a welding position by moving the welding device;
- measuring, by an encoder, a height variation of the applied welding position;
- calculating, by the controller, an optimum target heat input by comparing a real-time height variation of the welding position measured through the encoder and a gradient set in the controller;
- and
- determining, by the controller, weld quality by comparing the calculated optimum target heat input and an actual welding heat input.
A device for spot welding, the device comprising:
- a welding device;
- a controller configured to apply a preset welding heat input to the welding device and at a welding position by moving the welding device;
- and
- an encoder configured to measure a height variation of the applied welding position;
- wherein the controller is configured to calculate an optimum target heat input by comparing a real-time height variation of the welding position measured through the encoder and a gradient set in the controller;
- and
- wherein the controller is configured to determine a weld quality by comparing the calculated optimum target heat input and an actual welding heat input.
Dependencies are inferred from the claim text.