Service Support
| Malfunction | Cause of Malfunction and Elimination Methods |
| Mid-diameter too large, outer diameter too small | 1. The position of the movable spindle is adjusted too far; 2. Rolling time is too short; 3. Rolling pressure is too low. |
| Mid-diameter too large, outer diameter qualified | Blank diameter is too large |
| Mid-diameter qualified, outer diameter too small | Blank diameter is too small |
| Mid-diameter qualified, outer diameter too large | Blank diameter is too large |
| Mid-diameter too small, outer diameter too large | 1. The center distance of the spindle is too small; 2. Rolling time is too long; 3. Rolling pressure is too high. |
| Mid-diameter without taper, outer diameter with taper | Blank has taper |
| Mid-diameter taper exceeds tolerance | The parallelism of the two thread rolling wheels is not adjusted well and needs to be adjusted. |
| Fine chips or scales are generated during rolling | 1. Tooth position adjustment is not good; 2. Rolling time is too long. |
| Workpiece jumps upward during rolling | 1. Support block is too high; 2. The diameters of the two thread rolling wheels are different. |
| Workpiece screw peak is worn | 1. Support block is too low; 2. Surface finish of the support surface is too low. |
| Thread rolling wheel thread is damaged at the chamfer | 1. Thread rolling wheel chamfer is too steep or too small; 2. The two thread rolling wheel end faces are not in the same plane. |
| Thread rolling wheel is broken into pieces | 1. Blank shoulder contacts the thread rolling wheel end face; 2. Blank shoulder contacts the support block end face; 3. The position of the support block is not adjusted well and the blank is stuck; 4. Feeding depth exceeds thread depth. |
| Workpiece axial movement during rolling | 1. Blank diameter is too large or too small; 2. Thread rolling wheel diameter is too large or too small; 3. Support frame core is loose. |
| Workpiece overheating during rolling | 1. Spindle speed is too high; 2. Feed speed is too fast; 3. Rolling pressure is too high. |
| Pressure gauge pointer vibration | Oil suction blockage, should be cleaned. |
| Movable spindle feed is too slow | 1. Leakage in pipeline, should be repaired; 2. Oil cylinder sealing ring is damaged, should be replaced. |
| Vibration when movable spindle feeds back | 1. There is gas in the oil cylinder, should be vented; 2. Slider lacks lubricating oil, should be added. |
| Oil temperature is too high | 1. Oil viscosity is too high; 2. Rolling time is too long; 3. Rolling pressure is too high; 4. Ambient temperature is too high, add cooler. |
| Pressure cannot be adjusted high |
1. Oil pump is worn, replace with a new pump; |
| Oil produces foam | Oil level in the oil tank is too low or the oil pump is sucking in air. |
| Movable spindle has no feed action | Oil pump motor direction is incorrect. |
| Movable spindle has no return action | Return spring is malfunctioning. |
The company is a professional manufacturer of rolling machine, hoop bending machine, reducing machine, construction screw machinery, mine bolt machinery, rolling machine, mirror rolling machine, rolling machine, rolling machine, rolling gear machine and other eight series of more than 30 varieties of large-scale high-tech enterprises.
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Industrial Development Zone, Dongxingwan Town, Xingtai City, Hebei Province
Manager Zhang:
+86-18632098616
Telephone:
+86-319-7586888
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