In order to enable the combined machine tool to be used in small and medium-sized production, it is often necessary to apply group technology to concentrate the parts with similar structure and process on a combined machine tool to improve the utilization of the machine tool. Combined machine tool processing mode Combination machine tools generally use multi-axis, multi-tool, multi-process, multi-face or multi-station simultaneous processing, the production efficiency is several times to several tens of times higher than the general machine tool. Since common components have been standardized and serialized, they can be flexibly configured as needed, reducing design and manufacturing cycles. Therefore, the combined machine tool has the advantages of low cost and high efficiency, and is widely used in mass and mass production, and can be used to form an automatic production line.
Combination machine tools are generally used to machine parts of boxes or special shapes. During machining, the workpiece generally does not rotate. The rotary motion of the tool and the relative feed motion of the tool and the workpiece realize drilling, reaming, boring, reaming, boring, milling plane, cutting internal and external threads, and machining the outer circle. And end faces, etc. Some combination machine tools use a turning head to hold the workpiece to rotate, and the tool can be used for feeding motion, and can also realize the outer circle and end surface processing of some rotary body parts (such as flywheel, automobile rear axle half shaft, etc.).
The development history of combined machine tools Since the 1970s, with the development of indexable tools, fine-tooth milling cutters, automatic inspection of the pupil size and automatic tool compensation technology, the machining accuracy of the combined machine tools has also improved. The flatness of the milling plane can reach 0.05 mm / 1000 mm, the surface roughness can be as low as 2.5 ~ 0.63 μm; the pupil precision can reach IT7 ~ 6 grade, the pitch precision can reach O.03 ~ O.02 microns.
Special machine tools have evolved with the rise of the automotive industry. In the special machine tool, some components are gradually developed into common parts due to repeated use, thus producing a combined machine tool. The earliest combination machine was made in the United States in 1911 for the machining of automotive parts. Initially, each machine tool manufacturer has its own common component standards. In order to improve the interchangeability of common parts of different manufacturers and facilitate user use and maintenance, in 1953, Ford Motor Company and General Motors of the United States and the United States machine tool manufacturers negotiated the principle of standardization of common parts of combined machine tools, that is, strict regulations The size of the contact between the components, but the structure of the components is not specified.
Combined machine tool parts classification General parts can be divided into five types according to functions: power parts, support parts, conveying parts, control parts and auxiliary parts. The power component is the component that provides the main motion and feed motion for the combined machine tool. There are mainly power boxes, cutting heads and power slides.
The support member is a component for mounting a power slide, a cutting head or a clamp with a feed mechanism, and has a side base, an intermediate base, a bracket, an adjustable bracket, a column, and a column base.
The conveying component is a component for conveying the workpiece or the headstock to the processing station, and mainly includes an indexing rotary table, a circular indexing rotary table, an indexing drum and a reciprocating moving table.
The control unit is a component for controlling the automatic working cycle of the machine tool, and has a hydraulic station, an electrical cabinet, a console, and the like. The auxiliary components include a lubricating device, a cooling device, and a chip evacuation device.
The development of combined machine tools In order to enable the combined machine tools to be used in small and medium-sized production, it is often necessary to apply group technology to concentrate the parts with similar structures and processes on one combined machine tool to improve the utilization of the machine tools. There are two common types of machine tools, such as the spindle box combination machine and the turret combination machine. The future development of combined machine tools will use more speed-regulating motors and ball screws to simplify the structure and shorten the production cycle; use digital control system and spindle box, fixture automatic replacement system to improve process adjustability; Flexible manufacturing systems, etc.
How is the combined machine tool applied in small and medium batch production?
The combination machine is a semi-automatic or automatic special machine based on common parts and equipped with special parts and fixtures designed according to the specific shape and processing technology of the workpiece. It generally adopts multi-axis, multi-knife, multi-process, multi-face or multi-station simultaneous processing, and the production efficiency is several times to several tens of times higher than that of the general machine tool. Since common components have been standardized and serialized, they can be flexibly configured as needed, reducing design and manufacturing cycles. Therefore, the combined machine tool has the advantages of low cost and high efficiency, and is widely used in mass and mass production, and can be used to form an automatic production line.
Combination machine tools are generally used to machine parts of cabinets or extraordinary shapes. During machining, the workpiece generally does not rotate. The rotary motion of the tool and the relative feed motion of the tool and the workpiece realize drilling, reaming, boring, reaming, boring, milling plane, cutting internal and external threads, and machining the outer circle. And end faces, etc. Some combination machine tools use a turning head to hold the workpiece to rotate, and the tool can be used for feeding motion, and can also realize the outer circle and end surface processing of some rotary body parts (such as flywheel, automobile rear axle half shaft, etc.).
Special machine tools have evolved with the rise of the automotive industry. In the special machine tool, some components are gradually developed into common parts due to repeated use, thus producing a combined machine tool.
The earliest combination machine was made in the United States in 1911 for the machining of automotive parts. Initially, each machine tool manufacturer has its own common component standards. In order to improve the interchangeability of common parts of different manufacturers and facilitate user use and maintenance, in 1953, Ford Motor Company and General Motors of the United States and the United States machine tool manufacturers negotiated the principle of standardization of common parts of combined machine tools, that is, strict regulations The size of the contact between the components, but the structure of the components is not specified.
The general-purpose components can be classified into five types according to functions: a power component, a support component, a conveying component, a control component, and an auxiliary component. The power component is the component that provides the main motion and feed motion for the combined machine tool. There are mainly power boxes, cutting heads and power slides.
In order to enable the combined machine tool to be used in small and medium-sized production, it is often necessary to apply group technology to concentrate the parts with similar structure and process on a combined machine tool to improve the utilization of the machine tool. There are two common types of machine tools, such as the spindle box combination machine and the turret combination machine. The future development of combined machine tools will use more speed-regulating motors and ball screws to simplify the structure and shorten the production cycle; use digital control system and spindle box, fixture automatic replacement system to improve process adjustability; Flexible manufacturing systems, etc.
Main features of SAJ inverter in CNC machine tools
1. Low frequency torque, smooth output combined machine tool inverter
2, high performance vector control
3, torque dynamic response is fast, stable speed and high precision
4, slow down parking speed
5, strong anti-interference ability
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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