How to choose an efficient vertical machining center?

Vertical CNC machining center refers to a CNC machining center that is vertically set between the spindle bearing centerline and the operating table. It can perform various process flows such as milling, boring, drilling, expanding, reaming, and tapping, and is mainly suitable for the production and processing of 3C products, automation technology private aircraft parts, electronic components, mechanical equipment, small cars, airports, aerospace, ships, national defense and security industries. As an industrial mother machine, sharpening a knife is not a mistake. To do a good job, choosing a high-efficiency vertical CNC machining center has a particularly important harm to production and processing efficiency and productivity. Let's take a look together below. How should people choose a high-efficiency vertical CNC machining center?

1. Shell

The quality of the shell is a key step in the production and manufacturing of CNC lathes. Even if a CNC lathe has a good cardiovascular system, if it is basically poor, it is like a tree without roots and water without source. The office environment of a CNC machining center has high vibrations. To maintain the stability of the casing, the first step is to use materials with good feng shui and effective construction. The shell of the VH-850 vertical CNC machining center series products has undergone continuous simulation and calculation of the mechanical foundation, and the design scheme is a stable bed structure. Resin sand casting HT300 pig iron forging is selected, and the herringbone upright design scheme can bear the inertia caused by high-speed production and processing; The vertical pole of the CNC lathe has been widened from 800 to 1600, greatly improving the operational reliability of the CNC lathe and the high-precision reliability of production and processing. Apply C3 grade steel ball lead screw to demonstrate high-quality operational accuracy. In addition, there are pre tensioning design schemes in each radial direction, which can effectively remove backlash and make gear transmission smoother

2. Main shaft bearings

The main shaft bearing is the most important multifunctional component of Lijia, which is generally divided into transmission gear main shaft bearing, synchronous belt transmission main shaft bearing, direct coupled main shaft bearing, and high-speed electric main shaft according to the structure of the transmission system. The transmission gear spindle bearing can automatically switch between high and low gears based on the speed ratio, thereby achieving high stiffness, suitable for heavy drilling sites, with a speed ratio generally below 6000 revolutions per minute. The synchronous belt rotating spindle bearing has a simple structure, strong buffering capacity, and can be maintained reasonably under load drag. The speed ratio is generally 6000-12000 revolutions per minute. Direct coupled spindle bearings are AC servo motors that immediately drive the spindle bearings based on the coupling. They have high torque, low energy consumption, and a speed ratio of generally 8000-15000 revolutions per minute. The Giant VH-850 vertical CNC machining center series products use straight type 12000rpm spindle bearings, P four level high-precision diamond shaped ceramic ball rolling bearings, strong radial stop torque, and can withstand long-term high-speed operation. The spindle bearings have low noise and low vibration during high-speed operation. The nose end of the spindle bearings is designed with a mysterious palace ring blowing inspection scheme, which can avoid cutting, smoke, and cutting oil from entering the machine tool spindle bearings; The main shaft bearing refrigeration system uses a main shaft bearing oil temperature cooling tower to display the temperature operation of the main shaft bearing, in order to increase the service life of the main shaft bearing;

3. Air intake system

Excellent lubrication is a key standard that can reduce damage and ensure the normal operation of vertical CNC machining center equipment. Any component that comes into contact with fitness exercises must have lubrication ensured in between. Without the intake system of a CNC lathe, the service life and precision of the CNC lathe will be greatly compromised. The ultra-high vertical CNC machining center adopts fully automatic lubrication equipment, which can perform quantitative analysis of lubricating grease at regular intervals and evenly fill it into the lubrication position, so that the slide rail, ball screw, ball screw seat bearing, and nut can obtain excellent lubrication, thereby increasing the service life of the CNC lathe and reducing the consumption of lubricating grease.

4. Sliding rail

Whether it is a wire rail or a hard rail is a common challenge when choosing a CNC machining center. Compared to the other, wire rails have faster operating speed, higher machining accuracy, and longer service life, but their relative load-bearing capacity is relatively small. However, this relatively small load-bearing capacity is only applicable to hard rails. In fact, many large factories have greatly improved their load-bearing capacity based on some design schemes, such as using overloaded and heavy-duty roller linear guides to configure aggregate guide rail sliders. Overall, except for CNC lathes that carry out long-term heavy drilling work, wire rail CNC machining centers are better than hard rail CNC machining centers. The PRV-11166L3 series product has a three line rail vertical CNC machining center. The Z-axis guide slider has been raised from 2 pairs to 3 pairs, which improves the reliability of the spindle bearing box and the stability of the fitness movement. It also enhances the drilling stiffness and machining accuracy of the CNC lathe, ensuring high-precision and high-quality products produced and processed. The X-axis modification of the operating table is composed of 6 guide rails and sliding blocks that are gathered and distributed throughout, used to support the average point steel and cutting speed loads. Therefore, the operating table enjoys the best rigidity and flatness under different loads, locations, and harsh production and processing standards.

5. CNC knife

The most common types of CNC knives for Lijia are disc-shaped, head mounted, and robotic arm type. The head mounted CNC knife has a tool change time of over 8 seconds, while the robotic arm CNC knife has a tool change time of over 4 seconds. The Giant High Lijia Management Center uses disc-shaped CNC knives and camshaft drives to present a fast and stable tool change posture with a tool change time of only 1.5 seconds, resulting in extremely high efficiency

6. Featured Features

Some outstanding features can assist people in reducing human resources and capital investment, minimizing equipment damage during the operation process, and therefore can also serve as bonus points in the entire process of selecting CNC machining center models:

Milling groove: an integrated spiral type fully automatic chip taking organization, reducing labor costs and making it convenient and easy to remove drilling debris.

Z-axis balance block cylinder: ensures that there is no shaking when the Z-axis moves rapidly, ensuring precision. Relieve extruder screw sandbag leggings, reduce overheating, and reasonably improve precision and service life. In addition, it can alleviate the load on servo motors, reduce power engineering consumption and overheating.

Oil and gas separator: The design scheme of the mysterious palace style oil-water separator includes multiple filters to promote the reasonable separation of oil and water, achieving the application of a repeated circulation system for oil and water, saving energy and controlling costs. Being able to maintain CNC blades reasonably and improve the efficiency of cleaning machinery.

Impact maintenance device: When the equipment experiences abnormalities or operator errors, it can digest, absorb, and lower the vibration caused by collisions, minimizing the harm of collisions and ensuring the original precision of the equipment.

An efficient vertical CNC machining center can reduce the relatively complex and complicated work of installing, adjusting, and repeatedly aligning production parts, greatly reducing non production processing time, simplifying production and manufacturing processes, reducing scrap rates, and reducing product costs. Therefore, caution must be exercised when purchasing mechanical equipment.