Have good tooling and fixture foundation and measurement technology level.
Fixture and measuring technology are listed separately because it plays an important role in the processing quality of parts as well as the accuracy of machine tools, and it is one of the symbols that reflect the level of technicians. The whole process system: the accuracy of the machine tool is guaranteed by the machine tool manufacturer, and the cutting tools and cutting parameters are provided by the tool manufacturer. Generally, the problem is not big. Only the tooling fixtures are specially designed by the technicians for specific parts. Generally, the parts of CNC machine tools are difficult, so unpredictable problems often occur.
During commissioning, the processing of the first part is unqualified, more than half of which is caused by the unreasonable positioning, clamping point and clamping force of the fixture. The difficulty of fixture cause analysis is that it can only be qualitative and difficult to quantify. If you have no experience in fixture design and parts clamping, it will be difficult. In this regard, it is recommended to consult the senior technicians who make precision coordinate boring machines. Accurate level measurement is one of the basic skills of machining. You should be able to skillfully use vernier caliper, dial gauge, dial gauge, inner diameter lever gauge, caliper, etc. Sometimes, CMM is not expected for parts processing. It must be measured manually. The content of wechat for metal processing is good and worthy of attention. Imagine that if the parts are not measured accurately, which leader or worker will trust you?
Familiar with CNC machine tools, proficient in the maintenance of CNC machine tools.
To be familiar with CNC machine tools, you should:
1. Familiar with CNC electrical components and control principle. Be able to say the names and functions of various components in the electric box, and understand the electrical schematic diagram. It can find out the alarm content according to the electrical alarm number.
2. Understand the structure and transmission principle of ball screw. Know which factors have a great impact on the accuracy of machine tools.
3. Understand the structure of the bearings at both ends of the machine tool screw and its influence on the accuracy of the machine tool.
4. Understand the lubrication system of the machine tool (bearings, spindles, moving pairs, gearboxes, etc.) and the distribution of lubrication points. The brand of machine tool lubricating oil and the normal consumption of oil every week or every month.
5. Understand the cooling system of the machine tool: cutting (water, gas) cooling, spindle cooling, electric box cooling, etc
6. Understand the main transmission structure of the machine tool and the specific data characteristics between the speed and torque of each machine tool.
7. Understand the characteristics of machine tool guide rail pair: is it a wire rail or a slide rail, and how rigid (bearing capacity)?
8. It can eliminate common operation faults (such as over limit, tool number error of tool magazine, etc.)
9. Proficient in various accuracy (static and dynamic) indicators and detection methods of machine tools.
10. Be familiar with tool magazine mechanism and tool changing principle.