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The Overall Maintenance And Maintenance Of CNC Drilling Machine
Oct 23, 2017

CNC drilling machine structure CNC drilling machine is also by the spindle box, tool holder, feed drive system, bed, hydraulic system, cooling system, lubrication system and some of the composition, only CNC drilling machine feed system and horizontal drilling machine feed system There are essentially differences in planning. Horizontal drilling machine spindle movement through the wheel frame, feed box, slip box box to the knife, to complete the vertical and horizontal feed movement. The CNC drilling machine is the use of servo motor, the ball screw spread to the skateboard and knife, to complete the z (vertical) and set (horizontal) feed movement. CNC drilling machine also a variety of thread function, spindle rotation and turret movement between the movement through the NC system to control. CNC Drilling Machine The spindle box has a pulse encoder, the movement of the spindle through the synchronous toothed belt 1 1 to the pulse encoder. When the spindle is rotated, the pulse encoder announces the detection of the pulse signal to the CNC system so that the rotation of the spindle motor and the cutting of the tool holder are carried out by the movement required to thread the thread, that is, when the thread is finished, z Move the workpiece to a lead.

(1) bed and rail planning. CNC drilling machine bed guide rail and the relative position of the horizontal plane, a total of four kinds of planning methods.

Horizontal bed of the I art is good, easy to guide the surface processing. Horizontal bed with a level of equipment can reduce the speed of the knife lance can be used for large CNC drilling machine or small CNC drilling machine planning. However, the level of the lower part of the bed space, resulting in difficult chip. From the planning scale point of view, the horizontal position of the turret makes the skateboard transverse scale longer, thus increasing the drilling width of the direction of the planning scale.

Horizontal bed with skewed skateboards and skewed rails are equipped with skewers, and on the one hand, there are technical characteristics of horizontal beds; on the other hand, the width of the machine in the width direction is smaller than that of the horizontal Chip removal is convenient.

Horizontal bed with skewed skateboards and slant bed equipment Sliding skateboard planning method is widely used in small and medium-sized CNC drilling machine. This is because the two planning methods of chip removal is simple, the chip will not accumulate on the rail, but also facilitate the equipment active chip conveyor; easy to operate, easy to manipulate the robot to complete the stand-alone initiative; drilling covers an area of small, Beautiful, simple to complete the closed protection.

The angle of the skewed rails can be 30. , 45. , 60. , 75. And 90. (Known as vertical bed) and so on several. Skew point of view is small, chip is not convenient; skew point of view, guide the guide is poor, the force situation is also poor. The size of the track skewed view will also directly affect the ratio of the height and width of the contour. In summary, consider the above elements, the small and medium standard CNC drilling machine, the bed of the skew to 60. Is appropriate

(2) turret planning. CNC drilling machine tool holder is an important part of the drilling machine, the knife is used to hold the cutting tool, so its plan directly affects the cutting performance and cutting power, to a certain extent, the knife plan and performance of the NC Drilling machine planning and manufacturing level. With the continuous development of CNC drilling machine, tool holder planning innovation, but the whole can be divided into two categories, that is, row knife-type knife and turret turret. Some of the middle of the turning also used with the knife of the active tool change device.

The cutter head is usually used for small CNC drilling machines. Various cutting tools are placed and clamped on a movable skateboard.

Turret type turret, also known as turret or knives, there are vertical and horizontal two planning methods. With multi-position active positioning device, through the turret head rotation, indexing and positioning to complete the drilling tool active tool change action. Turntable turret should be accurate positioning, positioning solid, repeat positioning accuracy, transposition speed, clamping cut good, to ensure that the NC drilling machine high precision and high power. Some turret turret can not only complete the active positioning, but also to pass power. At present, the two-axis linkage drilling machine with more than 12-station turret turret, there are 6 stations, 8-station, 10-station turret-type turret. There are two ways to plan a turret turret in a drilling machine: one is a turret turret used for machining disc parts, with its rotary axis perpendicular to the spindle and the other for the machining of shafts and discs Part of the turret turret, the rotary shaft parallel to the spindle.

Four coordinate control of the CNC drilling machine bed equipment on the body there are two independent skateboard and turret turret, so called double-pole four-coordinate CNC drilling machine. In the meantime, the cutting feed of each turret is controlled by the distance, so that the two knives can cut the same parts of the same parts, both to expand the processing scale, but also improve the processing power. Four-coordinate CNC drilling machine planning messy, and the demand for equipment with a special CNC system to complete the manipulation of two independent turret, suitable for processing crankshaft, aircraft parts and other shapes messy, large batch parts.