The inspection instruments for poor machining investigation are checked as follows:
1. Whether the regular inspection items of measuring equipment (micrometer, inner diameter micrometer, pneumatic meter) are determined?
2. Is the regular inspection and regular exchange of measuring equipment decided?
3. Regular? Is the exchange measurement equipment?
4. Whether the daily inspection items of the measuring equipment are determined?
5. Whether the inspection tools are different from tools, spare parts, workpieces, etc.?
6, check has not put in easy to oil, garbage, chips and other foreign bodies? Can the control sample be used without correction?
7. The cutting machine tells you whether the repetition accuracy of the inspection tool is good when comparing the sample? Can the control sample be used without correction?
8. When the product is used as a sample, does it identify and manage it into the product?
9. Do you use a thousand-point meter table that needs to be adjusted?
10. Do you consider a single rotation when using the micrometer?
11. When the inspection instrument fails, will the system of tracking and handling routes be decided?
12. Is the use time of the measuring instrument (measuring tool) regularly corrected and not considered?
13, about the measurement machine, special inspection tooling, samples and other inspection tools whether the acceptance? Have you missed any inspection items?
14. Is the tracking ability certain?
Cutting machine fault maintenance guidance
1. Cutting machine oil temperature is too high
A. The oil pump is damaged, and the internal parts wear and generate heat when rotating at A high speed.
B. Internal leakage of the oil pressure assembly, such as broken directional valve buckle or damaged seal ring, makes the high-pressure oil flow through the small space to generate heat.
C, improper pressure adjustment, the hydraulic system is in a high pressure state for a long time and overheating.
2. Noise generation of the cutting machine
A. Insufficient hydraulic oil in the oil tank, the oil pump suction air or the oil filter is blocked by dirt will cause the oil pump to lack of oil, resulting in the oil fluid
The solution is to check the amount of oil to prevent inhalation of air and cleaning the filter.
B. Hydraulic oil has high viscosity and increases flow resistance, requiring replacing appropriate hydraulic oil.
C. Due to the damage of the bearing or blade of the oil pump or the motor, the concentricity deviation of the coupling causes noise, and the concentricity must be adjusted to replace the parts.
D, direction valve reaction failure but the function is still in, such as valve center wear, internal leakage, burr obstruction, inflexible movement, solenoid valve due to electricity
Failure and failure can also produce noise. The solution is to clean the valve center or replace the new part, the current must be stable and sufficient.
E. When the hydraulic assembly is damaged or the oil pipeline is blocked, the noise occurs when the hydraulic oil flows at a high speed.
F. For mechanical failure, insufficient lubrication of the parts, loose parts, tightening or tightening should be replaced.
3, the cutting machine pressure plate is not down, or not down after the reset.
A. With problems with the cutting switch, check or replace it.
B. If the oil quantity in the tank is insufficient or the oil pipe leaks, refuel or tighten the oil tubing joint.
C, the solenoid valve can not be reset, repaired or replaced.
D, the relay has poor contact, the main oil road cannot be switched, check the line.
4. Insufficient cutting pressure
A. If the oil pump is damaged or the oil circuit is blocked, the oil cylinder has leaked, and it according to the situation after inspection.
B. If the micro-switch touch is too slow or faulty, adjust it to touch or replace it at about 10MM before the cutting point.
C, the solenoid valve fault, check and repair the solenoid valve center shaft.
D. The circulating oil in the oil tank is insufficient, and the supplementary circulating oil makes the oil surface beyond the oil filter network.
Post time: Jun-15-2025