Introduction to radial drill

Radial drill press can also be called cross drill. A drilling machine in which the spindle box can move left and right on the rocker arm and rotate with the rocker arm around the column. The rocker arm can also be raised and lowered along the outer column to adapt to processing workpieces of different heights. Smaller workpieces can be installed on the workbench, and larger workpieces can be placed directly on the machine bed or the ground.

Radial drilling machines are widely used in single-piece and small-to-medium batch production to process holes for workpieces with large volumes and weights. The radial drilling machine has a wide processing range and can be used to drill various screw holes, threaded bottom holes and oil holes of large workpieces. The radial drilling machine is used to process small and medium-sized holes on heavy or porous workpieces. It is mainly composed of a base, a column, a rocker arm, a headstock, and a spindle workpiece table. When the rocker drilling machine is working, the rocker arm can rotate around the column, and the headstock can move radially on the rocker arm. This allows the drill to be aligned with the axis of each hole to be processed for hole processing. It is more flexible to use. Generally, when drilling a workpiece, the workpiece is often clamped on the worktable. When processing large workpieces, the workpiece can be clamped on the base of the drilling machine. According to the height of the workpiece, after the locking device is released, the rocker arm can move up and down along the column, so that the spindle box and the drill bit are at the proper height position.

Radial drilling machines are generally configured in production occasions such as single-piece mechanical products, small batch production workshops, product assembly workshops and mechanical repair workshops.

The main variants of radial drilling machines are the sliding seat type and the universal type. The sliding seat type radial drilling machine is made by changing the base of the basic type radial drilling machine into a sliding seat. The sliding seat can move along the bed guide rail to expand the processing range. It is suitable for boilers, bridges, rolling stock and shipbuilding, mechanical processing, And other industries. The rocker arm of the universal rocker drilling machine can move horizontally in addition to vertical and rotary motion. The headstock can be tilted on the rocker arm to adapt to the processing of various parts of the workpiece. In addition, there are cart-type, wall-type and digitally controlled radial drilling machines.

Fold the main structure

The radial drilling machine is mainly composed of a base, an inner column, an outer column, a rocker arm, a headstock and a worktable.

The inner column is fixed at one end of the base, and an outer column is sleeved on the outside of it, and the outer column can rotate 360 ​​degrees around the inner column. One end of the rocker arm is a sleeve, which is sleeved on the outer column to move up and down. Since the screw rod and the outer column are connected into one body, and the lifting nut is fixed on the rocker arm, the rocker arm cannot rotate around the outer column, but can only rotate around the inner column together with the outer column.

The headstock is a composite component, which is composed of the main drive motor, the main shaft and the main shaft transmission mechanism, the feed and speed change mechanism, and the operating mechanism of the machine tool. The headstock is installed on the horizontal rail of the rocker arm, and can be operated by the hand wheel to move it along the rocker arm on the horizontal rail.

Folding movement form

When processing, the headstock is fastened to the rocker arm guide by a special tightening device, while the outer column is fastened to the inner column, and the rocker is fastened to the outer column, and then drilling is performed. During the drilling process, the drill bit performs longitudinal feed while rotating and cutting. Its motion form is:

(1) The main movement of the radial drilling machine is the rotation movement of the spindle

(2) The feed motion is the longitudinal feed of the spindle

(3) Auxiliary motions include: the rocker arm moves vertically along the outer column, the headstock moves along the length of the rocker arm, and the rocker arm and the outer column rotate together around the inner column.