1 Introduction When machining parts on CNC machine tools, many different specifications of CNC tools are needed. When the product structure is complex or the variety of products to be processed is large, the number of programs and tools will be greatly increased; because the tool number does not have a uniform naming standard, most Companies are all naming tools at random, so if the programmer is still programming according to the previous selection instructions (such as T1 D1, T2 D1), the result is: 1. The operator may not be able to choose according to the code of T1 or T2 The program corresponds to the tool; 2. Need to compare before and after the program segment, tool path and process to guess what a tool selection instruction represents the tool; 3. Because the same tool number can represent different types and specifications of the tool, and the system can not Distinguish it, so once the operator mistakenly chooses the tool, it will bring hidden danger to the safety of the machine tool and the quality of the product; 4. It takes a long time to determine the model or size of a certain tool in the machine tool. Measure, check and find. Based on the above reasons, after analyzing the standard of tool classification in SIEMENS numerical control system, the following new tool naming methods were proposed, which solved the problem of how to organize the tool to make the tool easier to access, how to schedule the tool to make the tool exchange the least number, and how to match The tool has the shortest tool preparation time and the highest utilization factor.
2 tool naming method Group tools by different tool types:
Category group 1 xxyyy (milling cutters):
110 Spherical milling cutter (cylindrical milling cutter, the following letter y represents the milling cutter diameter, slightly the same below)
120 end mill
140 face milling cutter
150 disc cutter
Category Group 2 xxyyy (Drill Bits)
200 twist drill (the following letter y represents the diameter of the drill bit, slightly the same below)
220 center drill
240 normal thread tap (the following letter y can distinguish coarse thread or fine thread)
250 Reamers
Category Group 3 xxyyy (Sickle)
300 double-edged rough boring tool (the subsequent letter y represents the boring tool diameter, slightly the same below)
320 single edge boring knife
Category Group 4 xxyyy (Reamer)
400 reamer (the following letter y represents the reamer diameter, slightly the same below)
Category group 5 xxyyy (tools):
500 rough turning tool (The following letter y represents the value of the tool tip arc, the same applies hereinafter)
510 Precision turning tool
520 grooving knife (followed by the letter y represents the width of the cutting edge, slightly the same below)
530 cutting tool
540 thread turning tool (the subsequent letter y can represent parameters such as coarse thread or fine thread)
Category group 7 xxyyy (special tool, the meaning of the subsequent letter y depending on the circumstances)
Examples are as follows:
T110010 represents a 10 mm diameter spherical cutter;
T200020 is a 20 mm diameter twist drill;
T300100 is a double-edged rough boring tool with a diameter of 100 mm;
T400110 indicates a reamer with a diameter of 110 mm;
T500008 indicates a rough turning tool with a radius of a knife edge of R0.8 mm;
3 Conclusion In this numbering method, the tool number itself contains the tool type, specific model and size, and other contents, so that programmers and operators can use each tool at a glance, especially when the machine program is not finished. A unified numbering method can not only provide a more intuitive understanding of the process of CNC machining, avoid quality accidents caused by the wrong use of tools, greatly reduce the preparation time and increase the production efficiency; at the same time, it can make the company's tool management more standardized. It is scientific, improves the automation level of tool management, achieves the purpose of quick inquiry and effective use of tool resources, and is applicable to various types of CNC machine tools.
In spite of this, due to the different types of CNC machine tools and tool types in various units, there are still deficiencies in the above methods; here only one individual idea is proposed, hoping to play a role in attracting valuable comments, and it is also inappropriate for experts to criticize and correct. .
