LB-ZQM Integrated Core Sampling and Cutting Machine for Rock Testing
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Description
Product Introduction
This core‑drilling machine is primarily designed for extracting cores from various types of rock and engineered stone, enabling targeted sampling of specific sections. It is also widely used in laboratories across industries such as petroleum, geology, coal, metallurgy, construction, and transportation to collect core samples, making it an essential piece of laboratory equipment. The device boasts an attractive design, robust durability, high strength, low noise levels, and user‑friendly operation.
Structural Principle
This machine primarily consists of a base, a column, a lifting arm, an electric motor, a control unit, a lifting reduction mechanism, a cross‑slide table for longitudinal and transverse movement, a chuck, and a cooling system. The base, column, lifting arm, and electric motor all exhibit high inherent rigidity, ensuring exceptional stability even when drilling large‑diameter rock cores. The spindle rotation is driven by the main motor via a V‑belt transmission.
1. Lifting boom
The lifting motor is mounted at the top of the column. Power from the reducer is transmitted via a worm‑gear mechanism to the lead screw, causing it to move in both forward and reverse directions and thereby raising or lowering the rocker arm. The machine is driven by an electric motor through a V‑belt; depending on the core‑drilling bit and the hardness of the test specimen, an appropriate lifting speed is selected for automated drilling.
2. Longitudinal and transverse (cross slide) movement of the worktable
The worktable is mounted longitudinally, with a lead screw and nut mechanism integrated into the base. The worktable is secured to the slide block and nut housing. By turning the handwheel, the lead screw is driven, causing the worktable’s slide block to move in the longitudinal direction, with a travel range of 800 mm.
The worktable is mounted transversely, with a lead screw and nut mechanism integrated into the slide. The worktable is secured to the nut housing and installed accordingly. By turning the handwheel, the lead screw is driven, causing the worktable to move laterally over a stroke of 300 mm.
The worktable is equipped with longitudinal and transverse positioning mechanisms, enabling linear motion in both directions to precisely align with the core‑taking positions required for workpieces and prototypes.
3. Fixture chuck
The Φ600 mm chuck of the standard interface is mounted on the lateral‑axis carriage and secures core‑taking workpieces or specimens of various sizes via its jaws.
4. Cooling System
The cooling water for this unit is tap water. The power supply is three-phase, 380 V. Please connect the grounding wire to the grounding stud on the fixed equipment. A return‑water trough is provided around the equipment base, and the cooling water ultimately flows through this trough, passes through a filtration device, and returns to the cooling‑water tank.
Technical specifications:
| Parameter Category | Parameter content |
| Maximum core recovery depth | ≤300mm |
| Core diameter | Φ25-Φ200mm |
| Diamond cutting blade | Φ300 |
| Diamond grinding wheel for surface finishing | Φ200 |
| Vertical travel | 800mm |
| Horizontal travel | 300mm |
| Chuck diameter | Φ600mm |
| Main motor power | 3KW |
| Lifting motor | DC36v/250w |
| Working hours | Continuous |
Use and Maintenance
a) Debugging
After the machine has been installed (and securely fastened), connect the three-phase power supply and verify that all moving parts operate smoothly and that all fasteners are properly tightened. Connect the cooling water; before pressing the main‑motor start button, be sure to open the tap valve first, and only start the motor once water is flowing from the drill bit. Press the start button and confirm that the spindle rotation direction matches the indicated arrow. If the direction is reversed, simply swap the connections of any two phase wires. As long as the main motor rotates in the correct direction, all other settings are also correct.
b) Use and Operation
1) Before use, all transmission components must be lubricated; the worm gear and worm should be regularly greased with butter.
2) Clamp the standard sample on the workbench.
3) Press the quick‑down button to bring the drill bit close to the specimen, then select the appropriate drilling speed based on the hardness of the stone.
(If using a manual drill for sampling, be sure to confirm that the drill arm and column lock have been released before pressing the rapid‑up, rapid‑down, or feed buttons. Once the drill bit is positioned near the specimen, if employing the manual drill for sampling, simultaneously lock the lifting arm and the column, open the coolant valve, and start the main unit. With your right hand gently supporting the force‑applying lever and your left hand withdrawing the spindle‑locking pin, press down on the lever to manually extract a core sample.)
4) Open the cooling water valve to ensure an adequate supply of cooling water. Drilling without coolant is prohibited.
5) Start the host machine and set the drilling speed based on the core diameter and the hardness of the specimen.
6) Start the drilling motor; use a slow speed for larger core diameters and a faster speed for smaller diameters, primarily determined by the hardness of the specimen.
Equipment Precautions:
1) Diamond drill bits are valuable and fragile; handle them with care during clamping.
2) During operation, if any abnormality is detected, the machine should be stopped immediately for inspection.
3) After completing work, promptly clean any debris from the worktable, wipe away water stains from both the inside and outside of the drill bit as well as from the worktable, and apply lubricant to the column and other components.
4) After the machine has been used, if it will remain idle for a period of time, apply a layer of animal fat to the drill bit, the column, the fixture, and any other areas prone to rust to prevent corrosion.
5) Do not operate the machine dry; otherwise, the sealing rings may be damaged. During drilling, ensure an adequate supply of coolant; otherwise, the drill bit may be damaged.
6) The equipment must be properly grounded.
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