Design of punching and bending structure for bus processing machine
1. The parting surface is simple
2. Casting surface avoids concave
3. The surface bosses are concentrated as much as possible
4. There should be no small protruding parts on the outer surface of large castings.
5. Improve the structure that hinders the mold
6. Avoid large and thin water levels
7. Avoid using shapes that generate large internal stresses
8. Prevent the deviation of the fit from adversely affecting the appearance
9. Adopting an easy-to-core structure
10. Minimize the parting surface
11. The casting wall thickness is evenly balanced
12. Use ribs to make the wall thickness uniform
13. Consider the solidification sequence to design the wall thickness of the casting
14. The inner wall thickness should be less than the outer wall thickness
15. The wall thickness of the casting should gradually transition
16. When the two walls intersect, the angle should not be too small.
17. The inner cavity of the casting should be convenient for core making.
18. No or less use of core support
19. Try not to use the core
20. The edge of the hole of the casting should have a boss
21. Casting structure should be beneficial to remove core sand
22. Core design should help improve casting quality
23. The hole of the casting is as far as possible
24. Reasonable arrangement of reinforcement ribs
25. Ensure that the castings are free to shrink and avoid defects.
26. Pay attention to the force of the ribs
27. Rib settings should consider structural stability
28. Remove unnecessary rounded corners
29. Be big and small, make it simple
30. Pay attention to the reasonable transmission and support of castings
Seven, bus processing machine cutting and stamping parts structural design
1. Free forged parts should avoid taper and wedge
2. The shape of the body is intended to simplify
3. Avoid using ribs
4. Free forgings should not be designed with complex bosses
5. Free forged fork parts should have no bosses inside
6. The parting surface size of the die forging should be the largest size of the part, and the parting surface should be flat
7. The shape of the die forging should be symmetrical
8. Die forgings should have appropriate corner radius
9. Die forgings should be suitable for demoulding
10. The shape of the die forging should be as simple as possible
11. The shape of the stamping part should be as symmetrical as possible
12. The partial width of the part should not be too narrow
13. The depth and shape of the boss and hole should have certain requirements
14. Stamping design should consider the material
15. The shape of the stampings should avoid large planes
16. Bend parts should avoid wrinkling at the bend
17. Pay attention to the design slope
18. Prevent hole deformation
19. Simplified development
20. Note that support should not be too thin
21. Thin plate bending parts must be cut at the bend
22. Pressure ribs can increase stiffness but have directionality
23. The shape of the drawing piece is simple
24. The convex edge of the drawing member should be even
25. Simplify the structure by using the slitting process
26. Stamping dimensions should consider die wear
27. Mark the stamping dimensions to consider the stamping process
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