Why reserve machining allowance in mould processing?
In mould processing, if we want to ensure the accuracy of die parts, we need to reserve machining allowance during processing. Machining allowance refers to the difference between the solid size of the workpiece and the size of the drawings. Machining allowance directly affects the quality of the parts. Excessive margin will waste raw materials, increase the consumption of machine tools and other energy; too small margin will easily lead to scrap of work pieces. Therefore, when processing die parts, it is necessary to reserve machining allowance reasonably.
The following is the method of reserving machining allowance in each process of die processing.
1. For workpieces requiring heat treatment, the grinding machine allowance of 0.25mm on one side of the spare material size before heat treatment is added.
2. The core pins and sleeves that needs CNC rough processing, the reserved allowance of one side is 0.2mm;
3. Reserve 0.3-0.5 mm on one side of the rough milling outline, 0.05 mm on the one side of the forming part and 0.1 mm on the one side of the rough outline after line cutting.
4. After CNC finishing and electric pulse polishing, mirror polishing should be done, leaving 0.03mm polishing margin on one side.
In addition to the above methods, we also need to reserve machining allowance according to the actual situation. As long as all links are well done, the processing accuracy of die parts will be guaranteed.
Above article from KENOS official website (http://www.moldpart-manufacturer.com/)
The original address:(http://www.moldpart-manufacturer.com/News-Center/4668.html)
