Fixture for welding

The utility model discloses a fixture for welding, include: the frame the frame top is provided with table surface, side clamp group spare the table surface left and right sides all is equipped with side clamp group spare, side clamp group spare includes side internal stay copying device subassembly and side profile modeling closing device subassembly, the shape of side internal stay copying device subassembly and the shape looks adaptation of oil cup, the left and right sides of oil cup can be supported two on the side internal stay copying device subassembly, side profile modeling closing device subassembly be used for with the side of oil cup compresses tightly, an at least tip closing device subassembly is located table surface front end and/or rear end be used for with the tip of oilcup compresses tightly, top closing device subassembly is located table surface is last be used for with the top of oil cup compresses tightly, its simple structure, reliable operation, positioning accuracy height. 本实用新型公开了种焊