The Difference Between Horizontal Machining Center And Vertical Machining Center
Horizontal machining center: refers to the machining center with the spindle axis parallel to the worktable, which is mainly suitable for machining box parts.
Horizontal machining centers have a horizontal spindle, usually with a square table for indexing rotary motion. Generally, there are 3 to 5 motion coordinates, and the common one is 3 linear motion coordinates plus 1 rotary motion coordinate, so that the workpiece can complete the processing of the other four surfaces except the mounting surface and the top surface in one clamping. It is most suitable for machining cabinet parts. Generally, there is an indexing worktable or a numerical control conversion worktable, which can process various surfaces of the workpiece; it can also perform joint movements of multiple coordinates to process complex spatial surfaces.
Some horizontal machining centers are equipped with automatic table exchange. While processing the workpiece on the worktable at the working position, the workpiece on the worktable at the loading and unloading position can be loaded and unloaded, thereby greatly shortening the auxiliary time and improving the performance of the workpiece. processing efficiency.
Working principle of machining center:
After the workpiece is clamped on the machining center for the last time, the CNC system can control the machine tool to automatically select and replace the tool according to different processing programs, and automatically change the machine tool spindle speed, feed speed, motion trajectory, etc. Auxiliary functions such as tool relative to workpiece. Complete multi-step machining on multiple surfaces of the workpiece. And it has a variety of tool changing or tool selection functions, which greatly improves the production efficiency.
Due to centralized processing and automatic tool change, the machining center reduces the time for workpiece clamping, measurement and machine tool adjustment, so that the cutting time of the machine tool reaches about 80% of the machine startup time (ordinary machine tools are only 15~20%): at the same time, it also reduces It reduces the turnover, handling and storage time of workpieces between processes, shortens the production cycle and has obvious economic effects. Machining centers are suitable for small and medium batch production with complex shapes, high precision requirements and frequent product changes.
Compared with the vertical machining center, the horizontal machining center has complex structure, large area and high price. Moreover, the horizontal machining center is inconvenient to observe during the machining process, the clamping and measurement of the parts are inconvenient, and the chip removal during the machining process is also inconvenient. Easy and suitable for processing.
Types and characteristics of horizontal machining centers:
Horizontal machining center
Horizontal machining centers are divided into fixed column type and mobile column type according to whether the column moves.
Fixed column type
The worktable moves laterally, the worktable moves in the X and Z directions, and the spindle box moves in the ya direction. It is suitable for multi-process machining of medium-sized and complex parts such as guns.
The headstock moves laterally, the headstock moves in the X and Z directions, and the worktable moves in the Y direction. It is suitable for multi-process processing of small and medium-sized parts such as chains and firearms.
The headstock is hung on the side of the column, and the headstock moves in the Y and Z directions. This layout is similar to a planer-style horizontal gun chain bed, with the table moving in the X direction. It is suitable for multi-process processing of medium-sized parts such as mirrors and guns.
D-type planer, the bed is T-shaped, the worktable moves in the X direction of the front bed, and the column moves in the Z direction of the rear bed. The headstock has two forms: front hanging and side hanging on the column, which can be moved along the ya direction. It is suitable for multi-process processing of medium and large parts, especially guns and guns of large length parts.
The column cross movement type, the column Z and U (parallel to the X direction) move, the spindle box moves in the Y direction on the column, and the worktable moves in the X direction on the front bed. It is suitable for multi-process processing of mirrors and guns for medium and complex parts.