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How to Choose a CNC Tool

25

2021-11

How to Choose a CNC Tool

On the processed, all tools are all preserved in the knife library, and the corresponding tool change operation is performed by the selection knife of the CNC program and the tooling instruction. Use the corresponding standard shank for the machine tool system specification so that the CNC machining tool can be quickly and accurately mounted to the machine spindle or return to the knife library. The programmer should be able to understand the structure size, adjustment method, and adjustment range of the tool holder used to ensure the radial and axial dimensions of the tool when programming, and arrange the order of the tool reasonably. 1. Factors affecting CNC tool selection When choosing the type and specification of the tool, it mainly considers the following factors: (1) Production properties Here, the production property refers to the batch size of the parts, mainly considering the effects of tool selection. For example, in a large number of production, special tools may be costly, and when single or small batches are produced, choose a standard tool more suitable for some. (2) Machine Type The effect of CNC machine tools used in this process pair selected tool type (drill, car blade or milling cutter). Under the conditions that can ensure the rigidity of the workpiece system and the tool system, high productivity tools, such as high-speed cutting, and large feed pulses. (3) CNC machining plan Different CNC machining programs can use different types of tools. For example, the machining of the aperture can be drilled with a drill and a reagent, or a drill and a boring knife can be processed.
Tools and Production Efficiency

25

2021-11

Tools and Production Efficiency

Modern tools are to achieve efficiency, high precision, high reliability, dedication, can provide complete set of processing solutions based on processing characteristics and workpieces, which are popular practices for international tool companies. But now, it is just selling products. This concept is to change, good tools, and enterprises will even help prepare a process after clarifying the user's processing requirements, and improve how much efficiency will be improved. Comparison, and the user is willing to accept such a paid service, and this is also another profit growth point of the company. The machine tool itself does not bring value, so it is necessary to help users improve the usage rate of the machine, and a common problem currently exist is a problem that the machine's utilization rate is low, so how to make the machine tool to achieve its efficiency, and the tool As an executor of machine tool processing tasks, if the tool level is not going, the high speed is also unable to function, so the tool management service came into being.
Partial Chamfering

25

2021-11

Partial Chamfering

There are a variety of different effects to be used in the sides of the part. The method described here can make the molding of the parts easier. In a case in actual processing, the CNC programmer faces the problem of low efficiency when completing the following chamfer processing. The task is 0.1 inches in the periphery of a part and the middle cavity chamfer. Customers are waiting for the parts to be completed, they will often go to the machining site. The machining progress of the chamfering process is indeed very slow, making customers dissatisfied. The programmer is accelerated by 3D chamfer processing methods. The cutting parameters used in the processing are as follows: the speed of 7000 rpm, feed 100 inch / min, and 0.002 inches. The time required to complete the chamfering process is 29 minutes. The problem with the cutting scheme is too small, and the steps are set in the G code and cannot be adjusted on the machine. If the cutting parameters are increased as follows: The speed is 10,000 rpm, the feed is 300 inches / minute, the step distance is 0.006 inches, and the process time can be shortened to 3.8 minutes. 3D method machining fillet. The rounded cutter can be used, but the installation and adjustment of the rounded tool is more complicated. Therefore, it is more preferred to use a ball-making milling cutter to process a soft material such as aluminum, rounded milling cutter to process steel material. With this 3D processing method, the computer has almost no adjustment of all considerations. Rounded milling cutters The cutting edge of the ball milling cutter is shorter, and its cutting force is smaller. Due to it is easy to process chamfer and round circles in CAD software, design engineers usually add chamfer and round circles to the entity model, so that the parts look more beautiful. However, most of them did not realize that the actual cutting rounded corners and chamfer are very much simpler as the corners and rounds. There is no uniform chamfer in the inner garden. This happens is that the Z-to-height setting of the chamfer knife is incorrect. It is easier to work with the ball-head milling cutter and 3D method processing holes. Since the cutting tool of the chamfer knife is not good, if the programming is intermediate cutting, a burr is generated. This is because the tip part is not enough, and the theoretical cutting line speed of the knife tip is 0. In addition, the knife pointer is not sharp. To make the chamfer knife cut tidy without burr, the knife tip needs to be offset to cut the contour. In the new version of CAM software, the chamfering knife can be biased to cut out neat contours. When a chamfering knife is biased, the depth of the tool is correct. If it is incorrect, uneven chamfer will be cut at the inner circular plane. Although this problem can be solved by the prior planning plan, it is necessary to consider too much when the chamfering process is attributed to unimportant feature processing, allowing the computer to solve the problem. For most chamfer, a ball head and rounded milling cutter can be used and 3D programmed cutting methods can be used. In this way, the computer can complete all considerations without worrying about burrs, bias tools or uneven matches. As long as it considers the chamfer milling cutter, the tool diameter is less than the inner diameter of the minimum. The deficiency of this method is that it is necessary to complete the entire chamfer cutting, the machining time is longer. Therefore, whenever possible, cutting amount is usually increased to improve processing efficiency.
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