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The VTC series of vertical CNC lathes are excellent products designed and produced in line with market demand, based on absorbing the advanced technologies of similar machine tools at home and abroad and integrating the years of experience of Jiangsu Daxiang Intelligent Equipment Co., Ltd. in producing vertical lathes. This series of machine tools is economical and efficient, and is suitable for machining complex disc-shaped parts in the automotive, military, and other mechanical industries.
This series of machine tools can process various shaft and disc-shaped parts, and can turn various threads, arcs, and the inner and outer curved surfaces, end faces, and grooves of revolving bodies. It is suitable for the machining of parts with large batch sizes, high machining accuracy, and high requirements for dimensional consistency. This series of machine tools is widely used in the automotive industry at home and abroad, and is a machine tool with high quality, high precision, low cost, and high efficiency. It can process the following products, etc.:
Compared with previous similar machine tools, it has the following advantages:
1. The important parameter indicators of the machine tool, such as the machining diameter of the machine tool and the rapid traverse speed of the two axes, are close to or greater than those of similar foreign machine tools.
2. The machine tool has a compact structure, occupies a smaller area, and the layout of each functional component is reasonable, which is convenient for operation and maintenance.
2. Main Structure and Technical Features of the Machine Tool
1. Base
The rib shape of the base is optimally designed using solidworks software, so that the machine tool has high rigidity; the material is high-density cast iron, which has high strength and good shock absorption performance.
Base structure of VTC500（L）/700（L）/900（L）
Base structure of VTC1200（L）
2. Spindle
The spindle of this series of machine tools can be equipped with A2-8/11/15 domestic or imported spindle units, or self-made spindle units. The self-made spindle units adopt the currently advanced and mature structure internationally in design. The front support of the spindle is composed of a double-row cylindrical roller bearing and a double-direction thrust angular contact bearing, and the rear support is a double-row cylindrical roller bearing; the bearings are imported precision spindle bearings, and the lubrication of the bearings uses imported high-speed grease. The axial and radial preloads of the spindle system can be adjusted with a nut, and it has high radial and axial stiffness. The radial clearance can be adjusted with the inner ring of the ball bearing, so as to obtain high machining accuracy and low operating temperature.
Schematic diagram of the main drive Schematic diagram of the spindle
Spindle power torque - speed diagram
3. Feed system
The two-axis guide rails of VTC500/700/900/1200 are quenched hard rails, which have high wear resistance. The slide plates are plastic-coated, with small frictional resistance and low noise. The two-axis guide rails of VTC500L/700L/900L/1200L all adopt imported rolling guide rails. These guide rails are of the four-direction equal-load type, with high precision and large load capacity. The balls are separated by cages to reduce frictional resistance, temperature rise and thermal deformation during rapid movement, thereby greatly improving machining accuracy, rapid traverse speed and production efficiency. Its outstanding advantages are small size, high precision and low maintenance cost. It is the configuration for users who pursue high precision and high cost-performance, and is especially suitable for applications in the automotive industry where high consistency of part dimensions is required.
Two-axis rolling linear guides of VTC500L/700L/900L/1200L Two-axis quenched hard rails of VTC500/700/900/1200
4. Tool post
The tool post has a variety of configurations, and users can freely choose according to their actual needs and usage habits.
Standard configuration: Yantai Global servo horizontal 8-station tool post. This series of tool posts is controlled by a servo motor for indexing, enabling two-way rapid tool selection and hydraulic locking, with extremely high rigidity. Vertical 5/6-station servo tool post. This tool post has an excellent design structure and high rigidity. It uses servo technology for indexing, dividing and hydraulic locking. The indexing and dividing are stable and accurate, and it is especially suitable for machining parts in the automotive industry.
5. Chuck cylinder
The standard chuck of this machine tool is a Taiwanese or domestic hydraulic chuck. This chuck is a waterproof chuck. There are sealing strips at the sliding fit between the jaw slide and the chuck body, which can effectively prevent the coolant from leaking into the spindle through the chuck and also prevent chips from entering the sliding surface and damaging the slide. There are 3 T-slots on the end face of the chuck, which makes it very convenient to replace various tooling fixtures, with good rapid adaptability and can meet the requirements of users for machining a variety of parts. Imported hydraulic chucks and cylinders, domestic waterproof power chucks and Taiwanese cylinders can also be optionally configured.
6. Protection
This machine tool adopts full protection, and an automatic protection door can be optionally configured, which is convenient for forming an automatic production line and suitable for loading and unloading workpieces by robots.
7. Hydraulic system and nitrogen balance system
This machine tool is a numerically controlled machine tool with a relatively high degree of automation and is equipped with a hydraulic system. To balance the load weight of the Z-axis, a balance cylinder is equipped. The main hydraulic control components of the hydraulic system are all selected from well-known Taiwanese brands or high-quality domestic products. The hydraulic oil tank is placed on the right side of the base and isolated from the outside by a protective cover. All the main hydraulic components are installed in a stacked manner, with a compact structure and convenient installation.
Hydraulic station schematic diagram Lubrication station schematic diagram
8. Lubrication station
The machine tool adopts a domestic centralized automatic lubrication system, and has functions of liquid level alarm and pressure alarm.
9. Cooling system
The cooling pump of this machine tool has a flow rate of 133L/min and a head of 40 meters. The cooling box is separated from the main machine (the cooling water tank is installed behind the main machine) to ensure that the accuracy of the machine tool is not affected by cutting heat. An imported cooling pump is used. After the cooling water is drawn out by the cooling pump, it is divided into three paths through the water diverter: one path is connected to the cooling water port on the tool post and sprayed out through the tool holder nozzle to provide cooling and lubrication for parts and tools, so as to ensure the machining accuracy of workpieces and improve the service life of tools; another path is connected to the water pipe on the base on the left side of the spindle to wash away the iron chips on the machine tool bed; the third path is connected to the water gun for cleaning parts and the machine tool.
10. Chip conveyor
According to the different materials of the workpieces to be processed, this machine tool can be equipped with a chain plate chip conveyor, a scraper or a magnetic scraper chip conveyor. The chain plate chip conveyor is suitable for collecting and transporting various coiled, agglomerated and blocky chips; the scraper chip conveyor is suitable for transporting chips of copper, aluminum, cast iron, etc.; the magnetic scraper chip conveyor is mainly used for transporting cast iron chips with a length less than 150 mm in wet and dry machining. All chip conveyors are automatic chip removal, and the start and stop of the chip conveyor can be controlled by the M command.
11. Electrical system
11.1 Numerical control system and servo system
The standard configuration of the machine tool's numerical control system adopts the Fanuc oi - Mate TD numerical control system produced by Fanuc Company. This system can adapt to high - efficiency, high - speed and high - precision machining; and it has the advantages of convenient operation, complete functions and high reliability.
The two - servo - axis system is a high - precision digital servo system with a high - speed microprocessor and software servo control function, which can realize high - speed and high - precision servo control.
11.2 Machine tool electrical system
The electrical design of the machine tool complies with the GB5226.1 - 2002 electrical standard.
The power circuits of the electrical circuit all have over - current and short - circuit protection, and there are corresponding interlocks for relevant actions of the machine tool to ensure the safety of equipment and personnel. The electrical system has a self - diagnosis function, and operators and maintenance personnel can observe the operating status of each part of the machine tool at any time according to the indicator lights and the display.
The main electrical components of the machine tool are imported products and products of Sino - foreign cooperation, so as to ensure the safety and reliability of the machine tool.
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