Classification and distinction of CNC boring and milling machines

(1) Horizontal boring machine

Horizontal boring machine is the most widely used type of boring machine. It is mainly hole processing, the boring accuracy can reach IT7, and the surface roughness Ra value is 1.6-0.8um. ??The main parameter of the horizontal boring machine is the spindle diameter.

Horizontal boring machine

The boring axis is arranged horizontally and feeds axially. The main spindle box moves vertically along the front column guide rail, and the workbench moves longitudinally or transversely to perform boring processing. This kind of machine tool is widely used and relatively economical. It is mainly used for hole processing of box (or bracket) parts and other processing surfaces related to holes.

(2) Coordinate boring machine

Coordinate boring machine is a type of high-precision machine tool. Its structural feature is a precision measuring device with coordinate position. Coordinate boring machines can be divided into single-column coordinate boring machines, double-column coordinate boring machines and horizontal coordinate boring machines.

A boring machine with a precision coordinate positioning device. It is mainly used for boring hole systems that require high size, shape, and especially position accuracy. It can also be used for precise coordinate measurement, template marking, and scale work. .

Single-column coordinate boring machine: The spindle drives the tool to perform main rotational motion, and the spindle sleeve performs feed motion along the axial direction. Features: It has a simple structure and is easy to operate. It is especially suitable for processing precision holes in plate-shaped parts. However, its rigidity is poor, so this structure is only suitable for small and medium-sized coordinate boring machines.

Double-column coordinate boring machine: The tool is installed on the spindle for main movement, and the workpiece is installed on the workbench and moves longitudinally in a straight line with the workbench along the bed guide rail. It has good rigidity, and large coordinate boring machines all adopt this structure. The main parameter of the double-column coordinate boring machine is the width of the work surface.

Horizontal coordinate boring machine: The worktable can rotate in the horizontal plane, and the feed movement can be realized by the longitudinal movement of the worktable or the axial movement of the spindle. Its processing accuracy is higher.

(3) Diamond boring machine

It is characterized by processing with a small feed amount and a high cutting speed, so the workpiece processed

has a relatively high cutting speed. High dimensional accuracy (IT6), surface roughness can reach 0.2 microns.

A boring machine that uses diamond or carbide cutting tools to perform precision boring.

(4) Deep hole drilling and boring machine

The deep hole drilling and boring machine itself has strong rigidity, good accuracy, wide spindle speed range, and the feed system is driven by an AC servo motor, which can adapt to various The needs of deep hole processing technology. Hydraulic devices are used to fasten the oil dispenser and the workpiece, and the instrument display is safe and reliable. The following working forms can be selected: 1. Workpiece rotation, tool rotation and reciprocating feed motion, suitable for drilling and small-diameter boring; 2. Workpiece rotation, tool does not rotate and only reciprocates, suitable for boring large-diameter holes and nesting processing; 3. The workpiece does not rotate, the tool rotates and reciprocates, and it is suitable for drilling of complex workpieces and small-diameter drilling and small-diameter boring.

(5) Floor-standing boring machine

The workpiece is placed on the floor-standing workbench, and the column moves longitudinally or transversely along the machine bed. Used for processing large workpieces.

In addition, there are milling and boring machines that can perform milling, or deep hole drilling and boring machines that can perform drilling.