What is turned Parts?

What is turned Parts？

Turned parts is a kind of parts that is processed by a cutting on a lathe. The shape and size of the blank are changed by the rotary motion of the workpiece and the linear or curvilinear motion of the tool, and it is processed to meet the requirements of the drawing.

Turning is a method of cutting a workpiece on a lathe using the rotation of the workpiece relative to the tool. The cutting energy of turning is mainly provided by the workpiece rather than the tool.

Turning is the most basic and common cutting method and plays a very important role in production. Turning is suitable for machining revolving surfaces.

Most workpieces with revolving surfaces can be processed by turning methods, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end faces, grooves, threads, and rotary forming surfaces.

The tools used are mainly turning tools. The accuracy of turning is generally IT11-IT7, some can reach IT6, and the surface roughness Ra can reach 12.5-08um.

The parts processed by turning are called turning parts, and there are many types of turning parts, which are famous for hard turning to maintain the thermal stability of the parts.

What are the characteristics of turning processing?

Turned parts processing, that is, lathe cutting, is an integral part of machining. Turning is mainly to use turning tools to turn rotating workpieces. Drills, reamers, reamers, taps, dies and knurling tools can also be used in turning. Turning is mainly used for machining shafts, discs, sleeves and other workpieces with rotating surfaces. It is the most widely used type of machine tool in machinery manufacturing and repair shops.

Turning is generally divided into roughing and finishing, including semi-finishing.Roughing strives to use a larger depth of cut and larger feed to improve turning efficiency without reducing the cutting speed, but the machining accuracy is only Rα20~10 microns; semi-finishing and finishing are as much as possible.

Large depth of cut and small feed to improve turning efficiency, the machining accuracy is Rα10~0.16 microns. High-precision lathe machining of non-ferrous metal parts by diamond high-speed precision turning, the machining accuracy can reach IT7~5 grades, and the surface roughness Rα is 0.04~0.01 microns, which is called “mirror turning”.

If the cutting edge of the diamond turning tool is processed into a concave and convex shape of 0.1~0.2 microns, the turning surface will produce very small and neatly arranged concave and convex stripes, which will show a brocade-like luster under the diffraction of light, which can be used as a decorative surface. This turning is called “Rainbow Turning”.

In turning processing, if the speed ratio of the blade (the blade speed is usually several times the rotation speed of the workpiece) rotates in the same direction as the workpiece when the workpiece rotates, the relative motion trajectory of the blade and the workpiece can be changed, and the processed section is a polygon (triangle). , square, angular and hexagonal, etc.) workpieces. When the tool is longitudinally fed, when the tool holder rotates relative to the workpiece, the tool holder performs periodic radial reciprocating motion, so that cam surfaces or other non-circular sections can be processed. On the shovel tooth lathe, the flank of the teeth of some multi-tooth tools (such as forming milling cutters, gear hob cutters) can be called “shovel back” according to a similar working principle.

It is easy to ensure the positioning accuracy of each workpiece machining surface;

Requirements for easy guarantee of coaxiality:

A chuck is used to mount the workpiece, and the rotation axis is the rotation axis of the main shaft of the lathe.

The front and rear tops are used to install the workpiece, and the rotating shaft is the center line of the two tops.

It is convenient to ensure the verticality of the end face and the axis, and the axis and the workpiece can be rotated through the lateral slide guide rail.

The cutting process is relatively stable, avoiding inertial force and impact force, allowing the use of a larger cutting amount, and the cutting speed is fast, which is conducive to improving production efficiency.

Suitable for finishing of non-ferrous metal parts:

When the surface roughness of the non-ferrous workpiece is required to be low, it is not suitable for grinding, but turning or milling is required. The refined car is machined with diamond turning tools to achieve high quality.

The tool is simple and easy to operate: turning, sharpening, and easy installation.

Ming Xiao Mfg provide We offer a variety of turning methods, such as conventional Lathe, Automatic Lathe, CNC Lahte, Swiss Type Lathe, Turn Mill Combination CNC lahte… sastisfied customer’s high quality or low cost request.