The boring machine is used in milling, cutting threads, boring, face turning or drilling. They use some rotating tool, more so a milling head, boring rod, drill or cutter. These machines are often used in drilling of open or closed surfaces of solid material, milling, threading, reaming or boring surfaces etcetera. The tools used in carrying out this operation include the milling cutters, thread cutters, reamers, drill bits and such like tools. One of the boring machines is the one that uses a horizontal spindle to bore. These machine types are known as horizontal boring machines. The horizontal spindle moves along their axis in order to bore through a Computer Numerical Control (CNC) System.
Boring machines are known to produce accurate and smooth holes on work pieces through enlargement of already existing holes by use of bores. The bores may be made of steel cutting tips, diamond or cemented carbide. The bore could also be a tiny wheel for grinding. Solitary tools are gripped against boring heads and attached against rotating spindles. The rotating spindle moves in circular motions against the walls of existing holes. The diameter to the hole is swept by this boring tool. The tool is under the control of boring head.
The cutters to the grinding wheel move in planetary motion and they rotate fast on their axis. The rotating wheels also move in slow motions with the rotation of the machine’s boring head on spindle axis. The diameter to the hole is managed through distance adjustments between spindle axis and wheel axis. The boring machine spindles can rotate on horizontal or vertical axes.
The tool making boring machines have a vertical spindle and a single material holding table. The holding table can move horizontally in separate and perpendicular directions to one another in order to allow for accurate spacing of holes. Some machines have spacing errors lower than 0.002%. For purposes of mass production distinct boring machines with many spindles are commonly used.
Types of Boring Machines
Boring machines can be categorized into four groups. There are: Horizontal, vertical, Jig and precision boring machines.
– Horizontal: Multiple head, Planer, floor and table boring machines
– Vertical: Standard vertical and Turret lathe boring machines
– Jig Boring Machines: Planer and vertical milling machines
Jig Boring Machines
This type is considered incredibly accurate. It was initially developed in 1910 from Switzerland. These machines are currently used for tools, fixtures, jigs and precision parts production. Essentially a jig machine is used to produce products that require high levels of accuracy and precision. The exceptional levels of accuracy are achieved through low levels of thermal expansion high rigidity with the machine and accurate measurement of the space and location where holes are to be made. The jig machine cuts metals for slots, planes and holes finishing using accurate surface or center location without any special attachments used for alignment of tool.
All parts of a jig machine are tremendously rigid in order to make sure there is minimal vibration and deflections. Spindles role in predetermined bearings and in the process they resist friction. The jig machine needs a room with controlled temperature in order to operate effectively.
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