Problems and solutions often occur in the process of mold use
Problem one: the plate is out of the clamp mouth
Cause: mold discharge is not complete
Solution:
1. Use punch with slope
2. Apply lubricant to the plate
3. Heavy duty mold is adopted
Problem two, the mold wear is serious
Cause: unreasonable die clearance (small)
Solution: increase die clearance
Cause: the upper and lower die seats are not in the middle
Solution:
1. Position adjustment, upper and lower die alignment
2. Horizontal adjustment of turret
Cause: did not replace the worn mold guide component and the insert of the tower in time
Solution: replace
Cause: punch overheating
Solution:
1. Add lubricant to the sheet
2. Ensure lubrication between punch and die
3. Use multiple sets of molds of the same specification in the same procedure
Cause: improper blade grinding method, resulting in mold annealing, resulting in increased wear
Solution:
1. Soft abrasive wheel is adopted
2. Clean the grinding wheel frequently
3. Small amount of knife
4. Sufficient cooling fluid
Reason: small step size
Solution:
1. Increase step size
2. Use the bridge step
Problem 3. Punch tape and punch adhesion
Cause: unreasonable die clearance (small)
Solution: increase die clearance
Cause: blunt cutting edge
Solution: timely blade grinding
Reason: bad lubrication
Solution: improve lubrication conditions
Problem four: waste bounce
Cause: mold problem
Solution:
1. Adopt bulletproof material to lower the mold
2. Reduce the clearance of small diameter holes by 10%
3. The diameter is greater than 50.00 mm, and the gap is enlarged
4. Add scratches on the cutting edge of the die
Reason: punch
Solution:
1. Increase the penetration depth
2. Install the unloading polyurethane top bar
Use a bevel edge
Problem 5. Difficulty in discharging
Cause: unreasonable die clearance (small)
Solution: increase die clearance
Cause: punch wear
Solution: timely blade grinding
Cause: spring fatigue
Solution: replace the spring
Cause: punches stick
Solution: remove adhesions
Question 6. Stamping noise
Reason: unloading difficulty
Solution:
1. Increase the die clearance and good lubrication
2. Increase discharge capacity
3. Adopt the unloading plate with soft surface
The reason: the support of the plate on the work table and in the turret is wrong
Solution:
1. Adopt spherical support mold
2. Reduce working size
3. Increase working thickness
4. Sheet thickness
5. Adopt oblique edge punch