cnc precision machining suppliers

How to choose the machining center that can meet the processability, accuracy requirements, chip efficiency and best price. Let's explore this blog together.

To meet the processability

The geometry of the workpiece and processing area to determine the variety and size of models. Generally speaking, the rotary body is processed by CNC lathe.

Rotary body with some plane or slot processing accuracy requirements can generally be completed by multiple clamping, respectively, the choice of high precision cnc milling machine center and vertical machining center, while the accuracy, especially the position of the product requires high degree of turning center should be used to complete.

In a work surface for drilling and tapping processing (small hole aperture less than 12mm) is suitable for the use of clamping arm drilling and tapping machine, large aperture suitable for vertical machining center to complete.

In a face or position degree requirements are not high in several different positions within the face of the plane milling and free-form milling, drilling, boring and other processing requirements of small and medium-sized workpieces, the choice of vertical machining center, and different faces have a high degree of position requirements of non-ferrous metals, soft metals and processing margin less black metal (iron, steel, stainless steel, etc.) workpiece size is relatively small parts suitable for the use of vertical machining center with the fourth axis The form of completion.

High accuracy requirements of the larger (contour more than 500mm square) multi-surface processing parts, the choice of horizontal machining center is more reasonable.

Large parts of complex surface processing, surface processing, drilling and tapping, etc. generally choose gantry machining center to complete, side processing needs can be optional gantry side milling head.

Gantry type metal high-speed high precision machining center

The number of work sequences and processing time determine the choice and type of tool magazine.

Simple work sequence, do not need frequent tool changes (a tool processing time of more than 10 minutes) of the processing parts, the labor intensity of workers moderate, you can choose without the tool magazine machining center (CNC vertical milling machine, CNC horizontal milling machine).

The work sequence is complex, when the tool needs more, generally use the machining center with automatic tool changing device. Tool processing time is relatively long (more than 10 minutes), tool change time (bucket-type 7 to 30 seconds) can be ignored the impact of the bucket-type machining center can be selected; in order to improve processing efficiency and tool change time occupancy time is relatively more obvious when the use of robotic tool magazine (also called disc type, tool arm type, which is characterized by a mechanical arm to simultaneously grab the target knife and the tool on the spindle, and pre-selected knife function, select The target knife number knife disc in the rotation of the same time processing can be parallel, without interrupting the waiting, tool change time between 2.5 to 5 seconds).

Satisfaction of precision requirements

According to our experience 0.05mm for roughing machine tools and finishing machine tools watershed, but also consider the new machine tool break-in period after the accuracy has been reduced, so the drawing requires precision (mainly position tolerance, shape tolerance such as ellipticity can be through the process and tool selection such as the original by arc milling, ellipticity super poor, and then changed to boring tool boring on the good) to reduce 0.005 -0.015mm to consider the machine accuracy.

The current popular practice is: the general accuracy requirements (>= 0.1mm) of the product basically high precision cnc milling machine center equipment can meet (you can choose Ningbo Hengda mechanical products); accuracy requirements (0.05 - 0.1mm) of the product selection of domestic equipment, key components Taiwan and above quality can be. Accuracy requirements (0.01 - 0.05mm) products, choose domestic machines with design capability or Taiwan machine or original Taiwan machine with factory in mainland. Products with accuracy requirement (<=0.01mm) should choose high-grade CNC equipment.

There is a situation is the high precision requirements, and a large number of products, we recommend the practice is to buy a good system stability of domestic machines to do roughing and semi-finishing, and then with a small amount of high-grade equipment for finishing, so that both the efficiency and investment costs drop significantly, is a good choice.

Chip efficiency and process optimization to determine the processing efficiency

First, the mechanical structure of the heavy cutting type, vertical machining center column bottom widening inverted Y design and column front and rear direction widening and reasonable reinforcement layout is the key to improve the rigidity and stability of the machine; Second, the size of the electrical system motor determines the processing capacity of the machine. For mold processors suitable for consideration of heavy cutting machine tools; and product processing, especially for large quantities of small machining margin products to optimize the process, tighten or focus on the process, reduce clamping and handling and other auxiliary work time, improve the efficiency of the use of machine tools, including the use of rapid tool change devices and so on.

For more information about cnc precision machining suppliers, we are glad to answer for you.