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What are the standards for CNC Milling Part Machining?

What are the standards for CNC Milling Part Machining?

Pulished on Nov. 08, 2019

As a China CNC Turning Parts Suppliers, there is some information I would like to share with you. CNC Milling Part Machining is a lathe that uses the rotational motion of the workpiece and the linear or curved motion of the tool to change the shape and size of the blank and process it to meet the requirements of the drawing. CNC Milling Part Machining is a method of cutting a workpiece on a lathe using a workpiece relative to the tool rotation. CNC Milling Part Machining's cutting energy is mainly provided by workpieces rather than tools. Turning is the most basic and common cutting method, and it plays an important role in the production. Turning is suitable for machining rotary surfaces. Most workpieces with rotary surfaces can be machined by turning, 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.

CNC Milling Part Machining

CNC Milling Part Machining

Among all types of metal cutting machine tools, lathes are the most widely used category, accounting for about 50% of the total number of machine tools. The lathe can be used to turn the workpiece with a turning tool, as well as drilling, reaming, tapping and knurling with drills, reamers, taps and knurling knives. According to the characteristics of the process, layout and structural characteristics, lathes can be divided into horizontal lathes, floor lathes, vertical lathes, turret lathes, and profiling lathes, most of which are horizontal lathes.

The CNC Milling Part Machining route is based on the principle that the machining route is guaranteed to have the shortest route.

(1) The route of the roughing can be changed according to the cutting position. For example, when the outer circle of the rough car is used, the way of reducing the number of radial layers can be adopted, and the way of reducing the number of axial stratification can be used for the end face of the vehicle;

(2) When finishing the car, to ensure the machining accuracy of the parts, the final machining accuracy of the parts is the precision after the last machining. The position of the infeed and retraction should be considered clearly, and the last machining should be completed once.

(3) The position of the tool change should be outside the workpiece and the clamp. When changing the tool, it is guaranteed to touch the parts, and the tool change route is short.

(4) The retracting route should be determined according to the position to be machined. The machining of the outer circular surface can adopt the oblique retracting method; the machining of the grooving can adopt the radial-axial retracting method; the retracting of the boring can be adopted. Axis - radial retraction mode.

When threading the machining center, it is necessary to ensure that the feed in the pitch direction and the rotation of the machine tool spindle maintain a strict speed ratio, so the machine tool is prevented from accelerating or slowing down during machining.

Different turning tools or other tools can be used on the lathe to process various rotary surfaces, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, threads, grooves, end faces and forming surfaces. The machining accuracy can reach IT8-IT7, surface roughness Ra. The value is 1.6 to 0.8. Turning is often used to machine parts with a single axis, such as straight shafts and general discs and sleeve parts. Multi-axis parts (such as crankshafts, eccentrics, etc.) or disc cams can also be machined if the position of the workpiece is changed or the lathe is properly modified. In the single-piece small batch production, various shafts, discs, sleeves and other parts are often processed with a wide-format horizontal lathe or CNC lathe; large parts with large diameter and short length (length to diameter ratio of 0.3 to 0.8) are used. Vertical lathe processing.

Our company also has OEM Brass CNC Turning Parts, welcome to come to consult.


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