1. Waste jumping hole

1) The length of the punching needle is insufficient. Insert the punching needle blade into the mold cavity, add 1mm to the material thickness, and replace the punching needle

2) The gap between the mold cavity is too large, reduce the gap with the cutting element or use a covering machine to reduce the gap

3) If the needle or template is not demagnetized, use a demagnetizer to demagnetize the needle or template

2. Waste blockage

1) If the feeding hole is small or offset, increase the feeding hole to ensure smooth feeding

2) The feeding hole has a chamfer, increase the feeding hole to remove the chamfer

3) The wound is not tapered, and the length of the straight wall position is reduced by wire cutting taper or back expansion hole

4) The straight wall position of the wound is too long, and a hole is drilled on the back to reduce the straight wall position of the wound

5) The blade collapsed, resulting in a large overhang and material blockage, causing the blade to be ground again

3. Poor appearance

1) The blade collapsed, causing the blade to grind again and resulting in a too large edge

2) The gap between the punching needle and the cavity is too large, the thread is cut into pieces, and then the gap is added

3) Poor smoothness of the cavity wound, polishing the straight wall position of the wound

4) The gap between the punch and the cavity is too small, saving the mold again and adjusting the gap

5) Excessive top material force, reverse drag to remove the blade and replace the torsion spring, reducing the top material force

4. Uneven cutting edges

1) Positioning deviation adjustment positioning

2) Single side molding, pulling material to increase pressure, adjusting positioning

3) Design error, resulting in uneven knife connection, re cutting the edge wound with embedded blocks

4) The feeding cannot be adjusted. The feeder is not allowed to be adjusted

5) Recalculate the feed step distance due to incorrect calculation, and reposition the joint position

5. The punching needle is prone to breakage

1) The closing height is too low, and the needle entering the blade is too long. Adjust the closing height

2) Improper material positioning leads to the punching needle cutting one side, and the adjustment of positioning or feeding equipment may break due to uneven force

3) The waste material from the lower mold blocked the wound, causing the punching needle to break. Drill a larger feeding hole again to ensure smooth feeding

4) Trim or re cut the block of the fixed position (clamp) and guide position of the punch to make the punch run smoothly up and down (plate making)

5) Poor guidance of the punching board resulted in the punching needle being subjected to force on one side, and the punching board gap was repaired again

6) The needle wound is too short, and with the intervention of the punching board, the needle should be re punched to increase the length of the cutting edge

7) The needle is not fixed properly and shakes up and down. Fix the needle again to prevent it from shaking up and down

8) The needle punching blade is not sharp, grind the blade again

9) The surface of the punching needle is scratched, and uneven force is applied during material detachment. Replace the punching needle again

10) The punching needle is too thin and too long, and the strength is not enough to replace the punching needle type again

11) The strength of the punching needle is too high, and the punching needle material cannot be replaced correctly. Adjust the hardness of the heat treatment

6. Iron filings

1) Recalculate the position of the compression bar or bending position

2) The bending gap is too small. Squeeze the iron pin to re plan the gap, or grind the formed block, or grind the formed punch

3) The bending die holder is too sharp, repair the R angle

4) There is too little material for the wound, please reattach the wound

5) The reinforcement is too narrow, grind the reinforcement again

7. Poor sprouting

1) The center of the sprouting bottom hole does not coincide with the center of the sprouting punch. Determine the correct middle position, 

or move the sprouting punch position, or move it to the sprouting center edge height pre punching hole position low, or even crack, or adjust the positioning

2) Uneven clearance between cavities leads to sprouting, edge height, edge trimming, edge trimming, and even cracking

3) The bottom hole of the bud does not meet the regulations, resulting in the height of the bud and the recalculated diameter of the bottom hole, an increase or decrease in the diameter error of the pre punched hole, and even cracking

8. Poor forming

1) The molding die holder is too sharp, causing material cracking. The molding die holder is repaired for the R angle, and the wound is moderately repaired for the R angle

2) Insufficient length of the forming punch leads to the inability to calculate the correct length of the punch. Adjust the specific length of the punch to meet the forming requirements

3) The molding punch is too long, the material at the molding site is deformed due to compression, and even the correct length of the punch is determined. The specific length of the punch is adjusted to meet the requirement of punch breakage

4) The calculation of material cracking is caused by insufficient material at the molding site, either repairing the R-angle or reducing the molding height

5) Poor positioning, resulting in poor adjustment of positioning or molding of feeding equipment

6) Insufficient forming gap leads to cracking or deformation

9. Bending specifications

1) Improper mold adjustment leads to viewing angle deviation, resulting in specification deviation adjustment and poor closing height or angle difference

2) Insufficient elasticity leads to poor viewing angle and dimensional deviation.

3) The material does not meet the requirements, resulting in poor viewing angle, leading to material specification replacement and re planning of gap errors

4) Material thickness error leads to poor viewing angle, specification deviation determines material thickness, material replacement and re planning gap difference

5) Improper positioning leads to dimensional deviation. Adjust the positioning to make the specifications OK

6) Design or processing errors result in welding and grinding gaps between bent blocks, removing gaps between blocks, leading to smaller bending dimensions

7) The molding tool has no R-angle, and under normal conditions such as viewing angle, the bending height of the molding tool's R-angle is relatively small

8) The bending specifications on both sides are slightly larger, with pressure reinforcement

9) Unilateral bending of the material leads to unstable spring force, increased spring force, and positioning adjustment

10) The gap is not scientific, resulting in poor viewing angle and dimensional deviation. Repair the gap

11) The height of the folding knife is not enough, and the bending punch is too short to fit into the folding knife. 

Increasing the height of the folding knife allows the bending punch to fit into the folding knife position as much as possible, resulting in a poor viewing angle

12) The bending speed is too fast, causing deformation of the bending root. Adjust the speed ratio to control and choose a reasonable speed

13) The structure is unreasonable, the folding knife is not embedded with a fixed template, and the groove is milled again. When the folding knife is inserted into the template for stamping, the gap becomes larger

14) Insufficient hardness in the heat treatment of the formed product, resulting in collapse of the wire or flattening of the re formed common wire

10. Do not pour materials

1) Inappropriate positioning or feeding adjustment of positioning or feeding equipment

2) Insufficient avoidance, blade grinding avoidance

3) The inner guide pillar is pulled, causing poor board movement. Replace the inner guide pillar

4) Replace the needle if it is pulled or has an uneven surface

5) The top material sales manipulation is not scientific, and the top material sales position is being manipulated again

6) Insufficient top material force or detachment force, replace the top material torsion spring or detachment spring

7) The matching between the punching needle and the board is not smooth, and the matching between the board and the board is not smooth, which makes the punching needle fit smoothly

8) The poor fit between the forming roller and the guide groove results in a smooth fit between the roller and the guide groove

9) The heat treatment of the board is not suitable, and it deforms after stamping for a period of time. Grind the board again to correct the deformation

10) The punching needle is too long or the sales length of the top material is insufficient to increase the sales length of the top material or replace the length.

11. If the punching needle breaks, replace it

12) The template does not have cloud magnetism, and the workpiece is brought up to demagnetize the template

11. Improper feeding

1) The mold is incorrect, causing the material strip to be misaligned with the feeder and mold, or changing the feeder to be out of the same straight line

2) Adjust the leveling machine or replace the material for uneven material strip

3) Not dumping the material leads to poor feeding, refer to the solution of not dumping the material

4) Adjust the positioning too tightly

5) Adjust the guide pin if it is too tight or the straight wall position is too long

6) Poor or excessive fixation of the punching needle, replace it with a punching needle of appropriate length and fix it again with the material strip intervention

7) The top material pin is too short, and the length of the top material pin is adjusted by intervening with the material strip and forming block to prevent interference

8) Improper adjustment of the floating block position

12. Poor riveting

1) The mold closing height is improper and the riveting is not in place.

2) The workpiece is not placed in place, adjust the positioning error

3) Before riveting, identify the defective workpiece and determine whether the rivet hole is chamfered by referring to the solution for the defective burr hole. If there is no chamfer, raise the chamfer

4) Insufficient length of riveting punch, use a suitable length of punch instead

5) Riveting needle does not comply with regulations, riveting needle does not comply with regulations

13. Install less or more

1) Accidentally assembling the wrong punch

2) The punch does not have a directional marker, the directional marker punch

14. Incorrect installation of screws

1) Not sure about the thickness of the template, grasp whether the thickness of the template is too long or too short

2) Not careful enough, lacking experience in using moderate screws

15. Disassemble the mold

1) The nut hole has not been cleaned, and the pin hole is easy to damage the mold when the nut is cleaned and the disassembly plate is disassembled. 

The pin hole should be straightened with screws first, and then the pin hole should be positioned

2) The program for disassembling the mold is incorrect. When removing the nut, do not hit the nut hole

16. Positioning sales

1) When the edge of the hole is flattened and scratched, causing over tightening of the mold, carefully check whether the nut hole is flattened, otherwise the pin hole cannot be reamed again

2) Pin hole offset or no escape hole below, increase positioning pin escape hole