Mechanical knowledge base: "CNC boring machine"

Technology definitions

Chinese name:

Trampoline

English name:

Boring machine

definition:

Mainly use boring tools to machine existing machine tools with prefabricated holes.

The role of the trampoline

A machine that primarily boring a prefabricated hole in a workpiece with a boring tool. In general, the boring tool rotates as the main motion, and the boring tool or workpiece moves as a feed motion. It is mainly used to process high-precision holes or complete finishing of multiple holes at a time. In addition, it can also be used to process other processing surfaces related to hole finishing. The use of different tools and attachments also allows drilling, milling, cutting, and machining with higher surface quality than the drill press. Boring machines are the main equipment for the processing of large box parts. Threads and outer diameters, end faces, etc.

Classification of trampolines (by structure and objects processed)

(1) Horizontal boring machine

Horizontal boring machine is the most widely used boring machine. It is mainly used for hole machining. The precision of boring hole can reach IT7, and the surface roughness Ra is 1.6-0.8um. ​​The main parameter of horizontal boring machine is spindle diameter.

Horizontal boring machine

The boring axis is horizontally arranged and axially fed. The spindle box moves vertically along the front pillar guide, and the table moves in the longitudinal or transverse direction for boring processing. This type of machine tool is widely used and economical. It is mainly used for hole machining of box (or bracket) parts and other machining surfaces related to holes.

(2) coordinate boring machine

The coordinate boring machine is a kind of high-precision machine tool. Its structural features are precision measuring devices with coordinate positions. The coordinate boring machine can be divided into single-column coordinate boring machine, double-column coordinate boring machine and horizontal coordinate boring machine.

The boring machine has a precise coordinate positioning device, which is mainly used for boring the size, shape, and especially the hole system with higher requirements for position accuracy. It can also be used for precision coordinate measurement, template scribe, scale and other work.

Single-column coordinate boring machine: The main shaft drives the tool for rotating main movement, and the main shaft sleeve makes feed movement in the axial direction. Features: Simple structure, easy operation, especially suitable for processing precision holes of plate parts, but its rigidity is poor, so this structure is only suitable for small and medium-sized coordinate boring machine.

Double-column coordinate boring machine: The main shaft is equipped with a tool for the main movement, and the workpiece is mounted on the work table along the table to make a longitudinal straight line movement along the bed rail. Its rigidity is better, and currently large-scale coordinate boring machines use this structure. The main parameter of the double-column coordinate boring machine is the table width. Horizontal coordinate boring machine: The worktable can make a rotary motion in the horizontal plane, and the feed motion can be realized by the longitudinal movement of the worktable or the axial movement of the main shaft. Its processing accuracy is high.

(3) King Kong trampoline

The feature is to process with a very small feed rate and a very high cutting speed.

The workpiece has a high dimensional accuracy (IT6) and the surface roughness can reach 0.2 micron.

Precise boring boring machine using tools such as diamond or carbide.

(4) Deep hole drilling boring machine

The deep hole drilling boring machine itself has strong rigidity, good precision, a wide range of spindle speeds, and the feed system is driven by AC servo motor, which can adapt to the needs of various deep hole machining processes. The oil cooler is tightly fastened and the workpiece is tightly closed with a hydraulic device. The meter display is safe and reliable. The following types of work can be selected: 1. Workpiece rotation, tool rotation and reciprocating feed movement, suitable for drilling and small diameter boring; 2. Workpiece rotation, the tool does not rotate only for reciprocating motion, suitable for large diameter hole And nesting processing; 3. The workpiece does not rotate, tool rotation and reciprocating feed motion, suitable for drilling of complex workpieces and small diameter drilling and small diameter boring.

(5) Floor trampoline

The work piece is placed on the landing table and the column moves longitudinally or laterally along the bed. For machining large workpieces.

There are also milling and boring machines that can be milled, or deep hole drilling boring machines for drilling.