It is a development trend that the fiber laser welding machine is equipped with laser welding equipment and fixtures to complete the automatic production of hardware products or spare parts, which not only saves manpower, but also greatly improves the production capacity of Laser Welding Machine manufacturers. But this kind of automation technology tooling fixture should pay attention to the following aspects when designing the solution, so as to truly ensure that it is powerful and easy to use.
1. The fixture itself should have a simple and lightweight structure, but it should have sufficient compressive strength and bending stiffness. As the fixture selected in the rigidity-fixed processing process, it should be ensured that the relative stiffness of the fixture should exceed that of the fixture. Control the sever ability of product workpieces.
2. Properly select the position and position of the clamping force, which mainly focuses on the actual effect of clamping. That is to say, it is not possible to destroy the shape or position of the product workpiece reservation due to the actual clamping operation, and even cause the precise positioning of the product workpiece to move or rotate.
3. Fixtures cannot hinder the loading and unloading of product workpieces. The lifting and removal of welding workpieces sometimes differ from the actual clamping operation. A reasonable way to deal with this type of divergence is usually to get rapport by changing the structure of the gripper or clamping mechanism. When necessary, the holder can be made detachable or tubular, so as not to open the lifting chamber space of the product workpiece.
Fourth, the overall design of laser welding equipment fixtures should be effective, not only beneficial to the installation of locators and grippers, but also to facilitate the adjustment of their parts, so as to facilitate integration into the clamping regulations of different products, which reflects a certain "softness".
5.Appropriately select the type of tooling fixture. The selection of the types of fixtures is based on the structural characteristics of the bundled electric welding workpiece, the predictability of the clamped parts, the production efficiency and the special welding process regulations and other factors. For products with a large production volume, many selection points and a small clamping force, pneumatic tooling fixtures are mostly used; for products with a small production volume, but long-term stable products and a large clamping force, it is advisable to Hydraulic clamps are selected; for medium and thick steel plate stainless steel products with a production volume below the medium level, when the actual operating room space is relatively wide, a simpler manual screw gripper is often used; for small production volume and occasional clamping parts For the manufacture of metals with large and moderate cutting properties (for example, in the simple assembly of high-pressure vessels and the assembly and alignment of the main beam webs of lifting equipment), wedge iron or crowbars are often used to properly handle the precise positioning of the workpiece part of the product. Require.
6.The size of the clamping force should be appropriate. When the clamping force is not enough, the clamped product workpiece will be dragged; if the clamping force is too large, it will damage the process performance of the parts and even cause stamping or scratching. Injuries, especially in the production of metal aluminum, should be paid more attention. When it is difficult to control the clamping force in the machining process and the actual operation is reversed, the relative limit switch block should be installed to prevent the clamping situation from being uncontrollable and failing to achieve the intended actual effect.
7.If the fixtures of laser welding equipment are used for welding in sections, it will be more cost-effective. In the production of large and medium-sized prefabricated components (such as the canopy and haunch welding in the steel frame structure of passenger cars), the actual operation is usually sequential welding or section welding. At this time, it can be considered that part of the fixtures with the same clamping requirements can be made into all movable steering headlight assemblies (suspension platform type or gantry type). The same processing content or similar processing technology is carried out successively. Actual operation. In this way, it not only saves the cost of work clothes, but also conveniently prohibits the removal and hoisting of the workpieces of large and medium-sized products after they are installed and welded. The actual indoor space is cost-effective.
