Horizontal machining center refers to a machining center with the spindle axis parallel to the worktable, which is mainly suitable for processing box parts. His working principle is that after the workpiece is clamped once on the machining center, the computer can automatically select different tools, automatically change the spindle speed of the machine tool, and complete the multi-process processing of multiple faces of the workpiece in sequence. His advantage is that it can greatly improve production efficiency.
The main shaft of a horizontal machining center is in a horizontal state, usually with a square worktable that can perform indexing and rotating movements. Generally there are 3 to 5 motion coordinates. The common one is three linear motion coordinates plus one rotary motion coordinate, which can make the workpiece complete the processing of the remaining four surfaces except the mounting surface and the top surface after one clamping. It is most suitable Processing box parts. Generally, it has an indexing table or a numerical control conversion table, which can process all sides of the workpiece; it can also perform a joint movement of multiple coordinates to process complex spatial surfaces. Some horizontal machining centers are equipped with automatic exchange tables. While processing the workpieces on the workbench at the working position, they can be loaded and unloaded on the workbench at the loading and unloading position, which greatly reduces the auxiliary time and improves Processing efficiency.
The working principle of the machining center After the workpiece is clamped on the machining center once, the digital control system can control the machine tool to automatically select and replace the tools according to different processing procedures, and automatically change the spindle speed, feed speed and the motion path of the tool relative to the workpiece. Other auxiliary functions, the horizontal machining center with exchange table (2 sheets) completes the multi-process processing of multiple faces of the workpiece at a time. And there are a variety of tool change or tool selection functions, which greatly improves the productivity of the horizontal machining center. Due to the concentration of processes and automatic tool change, the machining center reduces the time of workpiece clamping, measurement and machine tool adjustment, so that the cutting time of the machine tool reaches about 80% of the machine start time (normal machine tool is only 15-20%); It also reduces the work piece turnover, handling and storage time between procedures, shortens the production cycle, and has obvious economic effects. The machining center is suitable for small and medium batch production with complicated parts, high precision requirements and frequent product replacement. Compared with the vertical machining center, the horizontal machining center has a complex structure, a large area, and a higher price. The horizontal machining center is inconvenient to observe during processing, and it is inconvenient to clamp and measure parts, but it is inconvenient for chip removal during processing. Easy and beneficial to processing.
Types and characteristics of horizontal machining centers: Horizontal machining centers are divided into fixed column type and movable column type according to whether the column moves.
Fixed column type
The worktable moves in the cross direction, the worktable moves in the X and Z directions, and the spindle box moves in the Y direction. The spindle box has two types of vertical hanging and side hanging on the column. It is suitable for multi-process processing such as boring and milling of medium-sized complex parts.
The headstock moves in the cross direction, the headstock moves in the X and Z directions, and the worktable moves in the Y direction. Suitable for multi-process processing such as boring and milling of small and medium-sized parts.
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 the planer type horizontal milling and boring machine, and the worktable moves in the X direction. Suitable for multi-process machining such as boring and milling of medium-sized parts
Mobile column type
The bed is T-shaped, the workbench moves in X direction on the front bed, and the column moves in Z direction on the back bed. The spindle box has two types of vertical hanging and side hanging on the column, and it moves in Y direction. Suitable for multi-process processing such as boring and milling of medium and large parts, especially parts with longer lengths. Column cross sport type
The column moves in Z and U (parallel to the X direction), 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 such as boring and milling of medium-sized complex parts.
Spindle ram feed type
The spindle box moves in the Y direction on the column, and the spindle ram moves in the Z direction. The column moves in X direction. The worktable is fixed or equipped with a rotary worktable. It can be equipped with multiple worktables, suitable for small and medium-sized parts processing, and the workpiece loading and unloading and cutting time can be overlapped.
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