Installation Sequence of 1200 Ton Mining Machine Cutter Tooth Forging Hydraulic Press

Installation Sequence of 1200 Ton Mining Machine Cutter Tooth Forging Hydraulic Press

Coal cutter teeth and mining machine cutter teeth are vulnerable components in coal mining and tunneling machinery, with a high demand. They are manufactured using the warm extrusion forming process. Hydraulic presses used for warm extrusion forging of mining machine cutter teeth commonly come in capacities of 500 tons, 630 tons, 800 tons, 1000 tons, 1200 tons, etc. This description pertains to a 1200-ton mining machine cutter tooth forging hydraulic press designed by Nadun Machinery Manufacture Co., Ltd. It adopts a three-beam four-column structure design, offering large tonnage, a small table, compact structure, and good rigidity. The control system utilizes a large-diameter two-way cartridge valve, providing strong oil passage capacity, low pressure loss, and high reliability. With a fast speed of up to 350mm/s, it is driven by a servo system for low energy consumption and high efficiency. The electrical system is controlled by PLC, ensuring reliable operation and convenient safety features.

Installation Sequence of 1200 Ton Mining Machine Cutter Tooth Forging Hydraulic Press:

1. Installation of the Worktable:

   • Hoist the worktable to the corresponding position according to the foundation drawing.
   • Level the worktable surface using a spirit level, ensuring a levelness of not more than 0.10/1000mm in each direction.
   • Pour concrete slurry into the foundation screw holes, allowing it to solidify, and then tighten the nuts.

2. Installation of the Ejection Cylinder:

   • Hoist the ejection cylinder into the central hole of the worktable.
   • Align the interfaces of the upper and lower chamber oil pipes.
   • Tighten the nuts.

3. Installation of the Slide and Columns:

   • Place iron pads on the worktable, ensuring they are parallel both above and below, with a height not less than the press closure height.
   • Lift the slide onto the iron pads and then lift the columns.
   • Insert the columns into the holes on the worktable and tighten the lower nuts.
   • Insert the columns into the holes on the worktable, tighten the lower nuts, and adjust the upper crossbeam's four-column nut to the dimensions specified in the outline drawing of the 1200-ton mining machine cutter tooth forging hydraulic press.

4. Installation of the Upper Crossbeam and Main Oil Cylinder:

   • Vertically hoist the upper crossbeam and main oil cylinder.
   • Align the four holes with the four columns.
   • Slowly lower them onto the supporting nuts.
   • When hoisting, slowly lower the piston to the lower position to prevent accidents during sudden extension.
   • Tighten the upper column nuts and connect the large nut at the lower end of the piston to the slide using bolts. Ensure a 3mm gap at the connection to allow for the tight pressure of the piston rod against the slide and prevent rotation.

Forging Process of Mining Machine Cutter Tooth:

• Feeding (cutting on a bar cutting bed or punching machine)
• Heating (starting forging temperature is 1200℃)
• Extrusion forming (on the 1200-ton mining machine cutter tooth forging hydraulic press)
• Post-treatment.

The body of the 1200-ton mining machine cutter tooth forging hydraulic press is a three-beam four-column four-nut structure, facilitating the pre-tensioning and precision adjustment of the press. The three beams (upper crossbeam, slide, and base) are made of high-quality 45 steel plates. The slide is flange-connected to the main cylinder piston, relying on four columns for guided up and down movement. The four-column guide sleeves are automatically lubricated with boundary thin oil, improving friction mechanisms, reducing friction resistance, and preventing scratches and abrasions on the columns. The body of the hydraulic press for forming mining cutter teeth consists of the upper beam, slide, worktable, columns, and lock nuts; the main cylinder and hydraulic station are arranged on the upper beam.

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