When customizing CNC parts, in order to ensure processing quality and operation safety, the following matters need to be noted:
First, drawing design
Importance: Drawings, as key technical documents, not only provide the geometric size and shape information of the part, but also convey the machining process, quality requirements and design intent. The drawing is the bridge between the designer and the parts manufacturer.
Content requirements: A qualified part design drawing must contain size and geometric requirements (such as linear size, Angle, straightness, flatness, roundness, coaxiality, etc.), material specifications (such as material type, grade and performance parameters), tolerance requirements (such as permissible deviation range of each size), surface requirements (such as roughness, finish, mirror, coating), assembly requirements, quantity, graphics Presentation, part legend, and other necessary parameters.
Second, material selection
Mechanical properties: Precision parts processing requires that the material must have good mechanical properties and a reasonable heat treatment process to ensure the quality of the machined workpiece.
Processing performance: Choosing materials that are easy to process can increase production efficiency. At the same time, the function of the part must be matched to the application requirements.
Third, tool selection
Tool quality: The choice of tool has an important impact on the machining quality of CNC parts. The tool should be sharp, high hardness, the tip requires precision, and the wear should be controlled within a certain range.
Tool type: Select the most suitable tool according to the material type, hardness and specific requirements of the workpiece. For example, cemented carbide tools are suitable for roughing and semi-finishing most metals, while diamond tools are more suitable for ultra-precision machining.
Fourth, machining precision control
Tool and machine tool accuracy: For precision machined parts, the movement of the tool and the accuracy requirements of the machine tool must be precisely controlled.
Positioning and clamping: The use of accurate positioning methods (such as tool setting and fixture positioning systems) and appropriate fixtures to ensure that the workpiece is firmly fixed and accurately positioned during processing.
Fifth, cooling lubricant selection
Low temperature cooling lubricant: cooling lubricant is an important part of precision machining, and low temperature cooling lubricant should be selected to ensure the machining accuracy of parts.
Sixth, cutting parameters set
Parameter accuracy: The cutting parameters of precision machined parts should be accurate, and make reasonable adjustments according to the actual situation, in order to facilitate the damage control of tools and parts.
Parameter optimization: Select the right machining parameters, such as cutting speed, feed rate and cutting depth, which need to be adjusted according to the workpiece material, tool type and machine characteristics to achieve the best machining efficiency and surface quality.
Seventh, environment and security
Working environment: Keep the working environment around the CNC machine clean and orderly, ensure good ventilation. When handling operations containing dust or toxic gases, appropriate ventilation measures should be taken.
Safe operation: Strictly follow the safe operation procedures, wear appropriate personal protective equipment, such as safety glasses, earplugs, gloves, etc.
Eighth, quality control and maintenance
Quality inspection: Strict quality inspection of the completed workpiece, including dimensional accuracy, surface roughness, etc., to ensure that the product meets the technical specifications.
Equipment maintenance: Perform regular maintenance and calibration work of CNC machines to ensure that the accurate movement of each shaft and the reverse clearance control are within a reasonable range, so as to maintain the high-precision machining capability of the equipment.
Ninth, communication and coordination
Teamwork: The process involves multiple links, including design, processing, quality control, etc., which requires close collaboration and information exchange between different teams. Clear communication and coordination ensures that processing requirements, processes and quality standards are consistent at all levels.
Timely adjustment: Timely communication helps to timely adjust unreasonable processing programs and processes to cope with possible processing risks, ensure the smooth processing of CNC parts, improve production efficiency, save time, and ensure product quality standards.
To sum up, when customizing CNC parts, it is necessary to consider drawing design, material selection, tool selection, processing accuracy control, cooling lubrication fluid selection, cutting parameter setting, environment and safety, quality control and maintenance, and communication and coordination from many aspects to ensure that the parts meet the requirements.
