Abstract The 14th China International Machine Tool Exhibition (CIMT2015) was successfully held in Beijing on April 20-25, 2015. At this exhibition, the main manufacturers exhibiting horizontal milling and boring machines are: Parma, Skoda, Shenyang Machine Tool, Solous, Far East,...
The 14th China International Machine Tool Exhibition (CIMT2015) was successfully held in Beijing on April 20-25, 2015. At this exhibition, the main manufacturers exhibiting horizontal milling and boring machines are: Parma, Skoda, Shenyang Machine Tool, Solous, Far East, Kurashiki, Qiji Machine Tool, Wuzhong, Kunji, etc. First, part of the horizontal milling and boring machine exhibits 1. Italy PAMA company SPEEDMRT HP130 planing table milling and boring processing center
The main structural parts of the machine tool are high-quality cast iron, which adopts a relatively rare double-column hanging box structure. The diameter of the boring axis is φ130mm, the maximum number of revolutions of the main shaft is 3500r/min, the size of the table is 1800mm×2200mm, the maximum load is 16t, the torque of the main motor is 1530Nm, and the feed speed of each axis is 15-25m/min. The machine has high spindle speed, high power and high torque. The Y and Z axes of the machine tool adopt linear guide rails, and the headstock box is placed in the center of the column and cast iron structure. The main drive is a two-speed shift, and the X-axis and Z-axis beds are mounted on the same level of ground, reducing machine installation time and foundation construction costs.
The machine shaft diameter is 130mm, the maximum spindle rotation is 3000r/min, the table size is 2500mm×2500mm, the maximum load is 25t, the feed speed of each axis is 12m/min, the maximum stroke of the spindle is 900mm, and the rotary table rotates 0-2r/min. The machine features high spindle speed, high power and high torque. The headstock is supported by the ball screw and has no counterweight design; the plane bearing with ring gear on the B-axis is in rolling contact with the table, the box-type sliding guide with low friction coefficient, the two-speed main drive unit with circulating lubrication, and the temperature of the headstock is stable. System, spindle center tool cooling + external cooling, independent operation, comfortable operation, T-shaped integrated bed, so that the machine can be installed on a simple foundation.
The machine shaft diameter is φ125mm, the maximum spindle rotation is 3500r/min, the table size is 1250mm×1250mm, the load is 12t; the spindle torque is 2500Nm, the spindle feed is 12m/min, the spindle stroke is 800mm, and the rotary table is rotated 0-2r/min. The main structural parts are high quality cast iron. The machine tool features high spindle speed, high power and high torque. Long slide-type headstock is adopted, the boring shaft is supported on the slide plate, there is no closed cover, the Y-axis armor guard is interlocking structure, and the X-axis guard is inclined inward to ensure the coolant is returned to the chip conveyor. The table bed and the mast shaft are linear guides, the Y-axis is a sliding guide, and the electronic pre-loading B-axis. All axes use an absolute measurement system.
The diameter of the machine shaft is φ200mm, the maximum number of spindles is 4000r/min, the headstock stroke is 8m, the screw drive, the slide-type headstock is supported by only two linear guides, and the other axes are also linear guides. The transmission form of the reducer directly connected to the screw ensures the maximum rigidity and accuracy of the machine. The machine tool belongs to the floor milling and boring machine with the largest stroke parameter in the exhibition. The manufacturing precision and quality are the best. Compared with other manufacturers' machine tools, the same parameters are the smallest.
The maximum number of revolutions of the machine tool spindle is 8000r/min, the table size is 2000mm×2000mm, the load is 20t, the X axis is matched with three guide rails, and the X-axis and Y-axis are made of high-precision linear guide rails, which are suitable for the processing of precision grinding tools.
The diameter of the machine shaft is 130mm, the maximum spindle speed is 2500r/min, the spindle stroke is 700mm, the table size is 1800mm×2000mm, the maximum load is 12t, the maximum machining height is 2000mm, the feed speed of each axis is 10m/min, and the tool storage capacity is 40.
The diameter of the machine shaft is φ160mm, the maximum number of revolutions of the spindle is 2500r/min, the feed speed of each axis is 10m/min, and the spindle head is side-mounted. The X, Y, Z, and W axis positioning accuracy is 0.015mm/1000mm, and the repeat positioning accuracy is 0.012mm. It is a floor milling and boring machine with high speed, high power and high torque. The X, Y, W, and Z axis guide rails are all lubricated linear guide rails. The slide seat feed (X axis) adopts the transmission mode of double motor backlash. The spindle box feed (Y axis) uses the double motor double screw to realize the spindle box. The center of gravity is offset and the 进 axis feed (Z axis) is full closed loop control. The main drive is a three-speed shifting mechanism. The main shaft has a quasi-stop function for rigid tapping. The milling shaft is equipped with a temperature rise control device, which adopts a design that reduces energy consumption and prevents pollution: lubrication-free rails, grease lubrication, spray lubrication, etc. .
The diameter of the machine shaft is φ200mm, the maximum number of revolutions of the spindle is 2000r/min, and the feed speed of each axis is 10m/min. The main shaft bearing adopts constant current static pressure support, the weight of the headstock is balanced by hydraulic cylinder; the double motor double screw double grating scale synchronous displacement control spindle box tilt compensation, self-diagnosis function. The X, Y and Z axes adopt a constant-flow closed-type static pressure guide with one cavity and one pump, the X-axis adopts double-motor double-gear rack electronic preload anti-backlash transmission, and the Y-axis adopts double-screw synchronous drive. Full-closed control of X, Y and Z axes, the machine stroke is large and the volume is large.
The diameter of the machine shaft is φ160mm, the tool magazine and the manipulator are arranged. The turntable adopts the form of the exchange table of the table. The appearance is fully enclosed and the door is opened in front of the workbench. It is the only form of protection used in the milling and boring machine exhibits at this exhibition. Machine tool.
In the exhibits of this exhibition, there has been a significant improvement in high speed, high precision, and compounding. In particular, domestic manufacturers have improved rapidly in this respect and become a prominent highlight of this exhibition.
The major domestic manufacturers have made gratifying progress in applying new technologies and mature reliability. The performance of the high-rigidity linear guide is increasing, ensuring the high speed of the feed axis; the application of the dual-motor drive technology in the X-axis drive is simpler and more reliable; the Y-axis double-screw compensation technology simplifies the horizontal The center of gravity compensation structure of the headstock; the use of the main drive two-stage reducer meets the requirements of the spindle rotation number of 3000r/min; the closed-loop feedback function of the spindle makes the spindle feed precision higher; the hydraulic cylinder balance technology overcomes the tradition The balance of the weight is affected by the acceleration of gravity, and so on. The adoption of these technologies has made domestic machine tools close to the technical indicators of advanced foreign companies at high speed. In terms of positioning and repeat positioning accuracy, the gap with well-known foreign manufacturers is also narrowing. However, in terms of comprehensive performance and reliability, the gap is still obvious, and the accuracy and reliability cannot meet the needs of domestic users for high-precision milling and boring machines.
2, began to pay attention to the design of the machine tool, implanted green manufacturing concept
From the perspective of this machine tool exhibit, the appearance and protection have been done very well, which has changed a lot from previous sessions. Parma is the best in foreign countries, and the domestic products are greatly improved and improved in appearance.
In terms of green manufacturing, maintenance-free linear guides have been used more and more in domestic machine tools. The spindles are greased, the feed drive is greased, the main drive gears are spray lubricated, and the cooling system recovery unit is perfect and reliable. Reducing the application of hydraulic systems in machine tools, all of which can reduce fuel consumption and emissions; the overall weight of the machine tool has dropped significantly compared to similar products in the past, and the cost is gradually reduced, but the rigidity and strength are better.
3. The variety of domestically produced functional components with high performance and high reliability is increasing, and the supporting tools are more powerful.
The machine tool components exhibited in this exhibition are diversified and specialized, and there are more and more professional manufacturers. The accuracy and automation of the products have become higher and higher, and the performance of domestic tools has also been greatly improved.
4. Highlights of other exhibits
The industrial robots unveiled at this exhibition have become the biggest highlights, regardless of the exhibition area, the number of exhibitors, or the variety and grade of exhibits, which are the most in previous exhibitions. There are separate robots in the exhibits, as well as robots specially equipped for machine tools. They are mainly used to replace workpieces and tools, to detect and identify workpieces, and to provide possibilities for future unmanned workshops and intelligent manufacturing, which is compatible with China Manufacturing 2025. National strategy.
In summary, high-speed, high-precision, high-efficiency, multi-functional composite, environmental protection, intelligent, pleasant and pleasant is the development direction of horizontal milling and boring machine. It is our arduous task and responsibility to narrow the gap with leading foreign companies. Advanced experience, increase independent development and innovation, design and manufacture horizontal milling and boring machines that fully meet the needs of China's key projects and key areas for development is our goal.
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