automated transfer machine structure automated transfer machine is also composed of spindle box, tool rest, feed transmission system, bed, hydraulic system, cooling system, smooth system and other parts. Only the feed system of automated transfer machine and the feed system of horizontal lathe are fundamentally different in structure. The movement of the main shaft of the horizontal lathe is transmitted to the tool holder through the pulley frame, feed box and slide box to complete the longitudinal and transverse feed movement. The automated transfer machine selects a servo motor, which is transmitted to the skateboard and the tool holder through the ball screw to complete the Z-direction (longitudinal) and orientation (transverse) feed movement. The automated transfer machine also has the function of various threads, and the kinematic connection between the rotation of the spindle and the movement of the tool holder is controlled by the numerical control system. The main shaft box is equipped with a pulse encoder, and the movement of the main shaft is transmitted to the pulse encoder through the synchronous tooth belt 1 1. When the spindle rotates, the pulse encoder announces the detection pulse signal to the numerical control system, so that the rotation of the spindle motor and the cutting feed of the tool holder maintain the motion connection required for machining threads, that is, when the machining thread is completed, the spindle turns and the tool holder moves the workpiece to a lead.

The layout of the main shaft, tail seat and other components of the automated transfer machine relative to the bed is common with the bottom of the horizontal lathe, and the layout of the tool head and guide rail has changed the bottom. This is because the layout of the tool holder and guide rail directly affects the operation function, structure and appearance of the automated transfer machine. In addition, the automated transfer machine is equipped with closed protective equipment. Layout of bed and rail. automated transfer machine bed guide rail and the relative orientation of the horizontal plane there are four layout methods. The horizontal bed has good manufacturability and is easy to process the guide surface. Horizontal bed with horizontal equipment knife lance can improve the movement speed of the tool holder, generally can be used for large automated transfer machine or small fine automated transfer machine layout. However, the small space in the lower part of the horizontal bed makes it difficult to remove chips. From the perspective of structural scale, the horizontal placement of the tool holder makes the transverse scale of the slide longer, and then increases the structural scale of the width direction of the machine tool. The layout of the horizontal bed is equipped with a skew slide board and a skew guide rail shield. On the one hand, the horizontal bed has the characteristics of good technology; On the other hand, the scale of the width direction of the machine tool is smaller than that of the horizontal equipment skateboard, and the chip removal is convenient. The layout of horizontal bed with skew placed skateboard and oblique bed with skew skateboard are widely used by small and medium-sized automated transfer machines. This is because the two layout methods are simple to remove chips, chips will not accumulate on the guide rail, and it is also convenient for the equipment to actively remove chips; Easy operation, easy equipment manipulator, to complete the initiative of single machine; The machine covers a small area, concise appearance, beautiful, simple closed protection.

The tool holder of automated transfer machine is an important part of the machine tool, the tool holder is used for clamping cutting tools, therefore, its structure directly affects the cutting function and cutting power of the machine tool, to a certain extent, The structure and function of the tool holder reflect the planning and production level of the automated transfer machine. With the continuous development of automated transfer machine, the structure of the tool holder is constantly innovative, but as a whole, it can be roughly divided into two categories, namely, row tool holder and turret tool holder. Some turning centers also use the active tool changing equipment with a tool library. Row tool holder is generally used for small automated transfer machine, all kinds of tools are placed and clamped on a movable skateboard, and active positioning can be completed when changing the tool. Turret tool holder, also known as knife tower or knife table, has two structural modes: vertical and horizontal. With multi-tool position active positioning equipment, through the turret head rotation, indexing and positioning to complete the active tool change action of the machine. Turret tool holder should be indexing, positioning firmly, repeated positioning accuracy, fast rotation speed, good clamping to ensure the high precision and high power of automated transfer machine. Some turret tool holders can not only complete active positioning, but also transmit power. Now, the two-coordinate linkage lathe uses 12-station turret tool rest, and also uses 6-station, 8-station, 10-station turret tool rest. There are two ways to arrange the turret tool holder on the machine tool: one is the turret tool holder used for processing disk parts, the rotation axis is perpendicular to the main shaft; The other is a turret tool holder for processing shaft and disk parts, and its rotation axis is parallel to the main shaft.

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