What kinds of drilling machines are commonly used? What are the characteristics in use?

The worktable and headstock can move vertically on the column.

Features: Used for machining small and medium-sized workpieces.

2. Desktop

Short for bench drill. A small vertical drilling machine is installed on the workbench, and the maximum drilling diameter is12 ~15 mm.

Features: Most of the holes are drilled by hand, which is often used to process small holes of small workpieces. ?

3. Rocker arm type

The headstock can move on the rocker arm, the rocker arm can rotate and lift, and the workpiece is fixed.

Features: Suitable for machining large, heavy and porous workpieces, and widely used in machinery manufacturing.

4. Deep hole drilling machine

A special machine tool for drilling holes with a depth much greater than the diameter (such as the deep holes of gun barrels, gun barrels, machine tool spindles and other parts).

Features: In order to facilitate chip removal and prevent the machine tool from being too high, it is generally arranged horizontally, and there is always coolant.

5. Vertical drilling machine

Features: conveying device (cooling liquid is input to the cutting part from the inside of the tool) and regular tool withdrawal and chip removal device.

6, center hole drilling machine

Features: Used for machining the center holes at both ends of shaft parts.

7. Milling machines and drilling machines

Features: the workbench can move vertically and horizontally, and the drilling shaft is arranged vertically, which can be used for milling.

8. Horizontal drilling machine

Horizontal spindle and vertical spindle box drilling machines.

Features: Generally, it is more efficient than vertical drilling machine, and can process multiple faces at the same time.

Extended data:

Working principle of drilling machine

Usually, the rotary motion of the drill bit is the main motion, and the axial motion of the drill bit is the feed motion. In the process of machining, the workpiece does not move, so the tool moves, the center of the tool is aligned with the center of the hole, and the tool rotates (main movement). The characteristics of drilling machine are that the workpiece is fixed and the cutter rotates. There are two main working modes of drilling machine:

1. Accurately locate the place where the workpiece needs to be drilled. There are two positioning methods: one is tool positioning, and the other is special tool positioning.

Tool positioning: Tool positioning is based on the rotation center of props and machine tools, and the tool and machine tools are positioned through a rotation center during rotation.

Special tool positioning: Special tools use positioning special tools such as tips for positioning.

2. Drill holes for anchor points, and drill holes for points that have been accurately positioned.

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