CNC Strong Single Column Horizontal Machining Center

LM2214-NC CNC Horizontal Machining CenterProduct Introduction

1、 Overview of Machine Tools

The LM2214-NC powerful CNC horizontal machining center is mainly designed and developed for the heavy cutting needs of the mechanical manufacturing industry and the mold base manufacturing industry. Widely used in semi precision and rough machining of various molds and machinery manufacturing industries. After one clamping, the workpiece can continuously complete various processes such as milling planes, steps, grooves, complex surfaces, cavities, and drilling, boring, and tapping of various holes with high precision and efficiency. Has strong cutting ability, high processing efficiency, and effectively reduces manufacturing costs.

2、 Overall layout of machine tool

The CNC powerful single column horizontal machining center adopts a single column horizontal layout. The workbench moves longitudinally along the base (X-axis); The column is installed on the side of the base, and the cross drag plate with the spindle box (slider) moves vertically up and down along the column (as the Y-axis); The spindle box (slider) moves horizontally along the cross drag plate (for the Z-axis); Vertical workbench (backrest support platform) is installed vertically on the workbench and moves horizontally along the workbench (as the W-axis).

3、 Structural characteristics of machine tools

1. Spindle

The high-power AC servo spindle motor is transmitted to the spindle after being decelerated by a synchronous belt, meeting the high torque output at low speeds and suitable for strong heavy cutting.

Standard spindle oil cooler, providing constant temperature cooling for the spindle through circulating cooling oil, extending the service life of the spindle.

2. Guide rail

The main basic components of the machine tool, including the base bed, worktable, column, drag plate, spindle box, and vertical worktable, are all made of HT300 high-strength cast iron. The overall reinforcement and reasonable arrangement of reinforcement ribs make the whole machine have good shock absorption and stability, high structural strength and rigidity, and good stability in heavy cutting. Advanced heat treatment aging technology is used for large castings, with secondary aging treatment after rough machining to minimize internal stress and prevent deformation, ensuring the stability of machine tool accuracy.

The three-axis adopts a hard rail structure, and the surface of the guide rail is quenched at medium frequency before precision grinding. The hardness of the guide rail surface reaches HRC53 ± 3 degrees. After pasting wear-resistant adhesive on the sliding guide surface and manually scraping it, the friction coefficient is low, reducing low-speed crawling of the machine tool and achieving good positioning accuracy; Good damping characteristics, able to effectively absorb cutting vibrations, improve tool cutting volume and durability.

3. Spindle box

The spindle box adopts a large contact surface and a reasonably arranged reinforcing rib to ensure the bending and torsional stiffness of the slider, which is suitable for strong heavy cutting. The Y/Z axis is equipped with a new locking device, ensuring stability during heavy cutting of the machine tool.

4. Feed transmission system

The three-axis drive is driven by the servo motor through the precision planetary reducer to rotate the screw rod. The large diameter grinding double nut ball screw rod made in Taiwan, China, China is used, which is compact in structure, stable in movement and high in accuracy. Using imported screw rod support bearings, pre tension is applied to both ends of the screw rod to eliminate accuracy loss caused by thermal elongation, forming a stable high rigidity mechanical transmission system.

The Y-axis servo motor is equipped with an automatic brake function. In the event of a power outage, the automatic brake tightly holds the motor shaft, preventing it from rotating and preventing the spindle box from falling down after a power outage.

Three axis travel protection: The servo motor adopts an absolute value encoder, which is set with limit protection by the numerical control system parameters to prevent overshoot of moving parts and protect the safety of the equipment.

5. Vertical workbench

The vertical worktable is used for clamping workpieces and can be moved on the worktable (W-axis) by a hydraulic cylinder as needed, in conjunction with the guide rails on the worktable. The main function of the W-axis is to adjust the position between the workpiece and the spindle, making reasonable adjustments according to the different thicknesses of the workpiece, ensuring that the cutting points of the tool are in the optimal position of the machine tool, and maximizing the use of the machine tool stiffness. After adjusting the position of the W-axis, it is locked onto the workbench and integrated into a high-strength whole. The W-axis does not move during the cutting process.

6. Hydraulic system

The hydraulic system mainly includes the spindle automatic loosening tool and the vertical worktable movement. The system adopts integrated installation to ensure the reliability of the whole machine operation and facilitate maintenance and repair

The trailer (Y-axis) adopts a nitrogen balance system, which has fast response, small pressure changes, and no energy consumption. It is equipped with a pressure detection switch and a Y-axis feed lock.

7. Pneumatic system

The pneumatic system mainly consists of spindle blowing (cleaning spindle cone handle), tool cooling, and Y/Z axis locking pipelines.

8. Lubrication system

The X-axis guide rail and screw rod adopt a forced circulation lubrication system. The lubricating oil enters the distributor through the lubricating oil pump and is then injected into the oil inlet holes of the guide rail and the screw rod nut; The other parts adopt a thin oil quantitative centralized lubrication system, which is controlled by PLC program to achieve automatic lubrication of the guide rail and screw components at fixed time and quantity. Ensure timely, accurate, reliable, and pollution-free lubrication.

9. Automatic chip removal

The spiral chip conveyor is installed in the middle of the worktable and column, and is matched with a chain plate chip conveyor at the end of the machine tool to lift the iron chips and discharge them into the iron chip car.

10. Cooling system

The tool cooling adopts compressed air cooling. After the air source is dried and filtered, it is sprayed from the nozzle at the end of the spindle box to the cutting tool and cooled. External coolant and center outlet cooling can also be optionally installed to cool the tool (special optional accessories).

4、 Main technical parameters

5、 Main component configuration

Note: Due to reasons such as delivery time or technological improvements, the manufacturer reserves the right to replace with an equivalent brand.

6、 Installation environment

1. Power supply/gas source section:

Power supply: AC380V ± 10%

Total power supply: 70KVA

Power frequency: 50HZ ± 1%, three-phase

Good grounding is required, and it is recommended that each machine tool be grounded separately. The grounding wire should be copper wire

Gas source: 6kg/c ㎡ after appropriate drying treatment

2. Environmental conditions for use:

Relative humidity: ≤ 75%

Environmental temperature: 5 ℃ -40 ℃

Temperature change: ≤ 1.1 ℃/min

Air medium: non corrosive medium

Avoid direct sunlight on the machine tool

Adequate lighting and good ventilation

Stay away from seismic sources, heat sources, and heat flow

The machine tool works stably for a long time in the above working environment.

7、 Recommended oil and grease for equipment

8、 Machine tool accuracy

According to the inspection method specified in the national standard GBT 19362.1-2003, achieving the following accuracy is considered qualified.

X-axis straightness and parallelism: 0.025MM/1000MM, with an increase of 0.02MM for every 1000MM increase

Y-axis straightness and parallelism: 0.03MM/1000MM, with an increase of 0.025MM for every 1000MM increase

Verticality between each axis: 0.015mm/400mm;

定位精度: 0.03MM/500MM

Repetitive positioning accuracy: ± 0.02MM

Spindle axial runout 0.008MM

Radial runout of spindle 0.003MM

The roundness of the linkage machining circle of the machine tool is ± 0.04mm \ \ 500MM

9、 Acceptance of machine tools:

After the machine is produced, Party B shall notify Party A to come for pre acceptance of the machine. If the machine cannot be inspected for more than 30 days or the goods are not accepted after inspection due to the fault of Party A, it shall be deemed that Party A has waived this contract. The methods for notifying Party A by Party B include letter, fax, SMS, email, etc. If the email is delivered to Party A's email or the SMS is successfully sent, it shall be deemed that Party B has notified Party A. If Party A abandons this contract, the payment made shall not be refunded and Party A shall bear relevant responsibilities.
1. Acceptance procedure:

A. After the machine tool manufacturing is completed, Party B shall notify Party A to conduct pre acceptance at Party B's company. After passing the acceptance inspection, both parties can sign before shipping. The pre acceptance shall be organized by Party B and relevant tools and materials shall be provided.

B. After the machine tool is debugged by Party A's company, it will undergo final acceptance at the buyer's factory. After passing the acceptance inspection, Party A shall sign for the acceptance certificate. The final acceptance shall be organized by Party A and relevant tools and materials shall be provided. Conduct cutting tests according to the standard specimens of Party B. The test piece and cutting tool shall be provided by Party B.

According to the standard of the machine tool acceptance certificate provided by Party B. Confirm the performance, geometric accuracy, working accuracy, machine configuration, and appearance of the machine tool item by item.
3. The inspection conditions and methods must meet the requirements of Party B and the inspection methods and conditions of relevant industry practices. The acceptance criteria can be found in Party B's "Machine Tool Acceptance Certificate".

4. After the machine tool is installed and debugged by Party B at Party A's company, Party A shall organize mutual acceptance within one week. If Party A refuses to organize mutual acceptance due to its own reasons, it shall be deemed that the machine tool is qualified.

5. If Party A has any objections to the quality of the machine tool, it shall submit them in writing to Party B within 10 days. The first party shall not continue to use the machine tool, otherwise it shall be deemed as qualified. First, entrust the quality and technical inspection department to inspect the accuracy of the agreed upon project. If the result meets the national standard, it is considered qualified.

10、 Transportation and installation

1. The transportation, installation, and commissioning of the machine tool shall be the responsibility of Party B. The first party is fully responsible for issues related to machine unloading and positioning. After the pre acceptance of the machine tool is qualified, Party B shall transport the machine tool as a whole naked.

2. Before the arrival of the machine tool, Party A is responsible for the preparation work before equipment installation, including lubricating oil, hydraulic oil, No. 10 spindle oil, cleaning oil, cloth, foundation watering, preparation of foundation auxiliary equipment, machine tool power supply, and materials required for final acceptance.

3. After the machine of Party A is in place, the personnel of Party B are responsible for installation and debugging. The first party is responsible for the accommodation and meals of the staff of the second party.

4. The first party shall strictly follow the relevant industry standards, and the architectural design unit shall design based on the geological conditions of the first party and the relevant dimensions of the machine tool weight and external drawing provided by the second party. Design detailed construction drawings for the machine tool foundation and complete the construction 20 days before delivery. Not following the requirements for the foundation and affecting the accuracy of the machine tool is not the responsibility of Party B.

11、 After sales service

1. Technical services: Party B shall provide machine tool operation and maintenance training to Party A's operators. The training period shall not exceed 5 days.

2. Warranty period: The warranty period for the machine tool is 12 months after installation and commissioning are qualified. Any malfunction caused by design, manufacturing, or quality issues with spare parts shall be repaired free of charge by Party B. After the warranty period, Party B shall provide lifelong paid maintenance services.

3. Technical guidance: After the machine tool is running, Party B shall provide long-term technical support! If there is a problem that Party A is unable to handle, technical guidance and support shall be provided within 24 hours after receiving written notice from Party A. If necessary, after-sales service personnel shall be dispatched to Party A's factory within 48 hours for on-site handling.

4. Failure to operate machine tools according to industry requirements, or damage caused by force majeure such as human error or natural disasters, are not covered by the warranty.