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The reasons for the decline of the precision of the four-column hydraulic press

by:WORLD     2022-10-07
The reasons for the decline of the precision of the four-column hydraulic press


1. The precision of the guide rail of the four-column hydraulic press is poor, and the guide rail surface (V-shaped, flat guide rail) is seriously distorted.



2. There are rust spots on the rail surface.



3. The guide rail pressure plate inserts are adjusted too tightly, and the dynamic and static friction coefficients of the guide rail pair materials are greatly different.



4. The guide rail of the four-column hydraulic press is not well scraped, the number of points is not enough, and the points are uneven.



5. The oil groove opened on the guide rail is not good, the depth is too shallow, and it has been worn off during operation, the oil groove opened is uneven, and the length of the oil groove is too short.



6. The hydraulic equipment of the new hydraulic press has no running-in guide rails.



7. The axis line of the hydraulic cylinder on the four-column hydraulic press is not parallel to the guide rail.



8. Corrosion of the arresting section (local section crawling) and strain in the cylinder hole of the hydraulic cylinder on the four-column hydraulic press.



9. The hydraulic cylinder hole, piston rod and piston on the four-column hydraulic press have poor precision.



10. The hydraulic cylinder and installation accuracy of the four-column hydraulic press are poor, and the coaxiality of the piston, piston rod, cylinder hole and cylinder head hole is poor.



The fuselage positioning device of the four-column hydraulic press is arranged at the relative position of the contact surface between the lower plane of the upper beam of the hydraulic press and the upper plane of the column, and at the relative position of the contact surface of the upper plane of the lower beam and the lower plane of the column, respectively. Set the locating pin in the locating pin hole.



The fuselage positioning device of the four-column hydraulic press is arranged at the relative position of the contact surface between the lower plane of the upper beam of the hydraulic press and the upper plane of the column, and at the relative position of the contact surface of the upper plane of the lower beam and the lower plane of the column, respectively. Set the locating pin in the locating pin hole. WORLD Press Machine official website www.pressmachine-world.com, please indicate the source for reprinting!








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