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In order to adapt to the fierce market competition, and can better serve the domestic metal products industry, wire drawing machine drive system design is also hardened gears to the transmission form of change, the specific performance is currently on the market has adopted more powerful narrow V Combination of the combination of hardened gear box with special drawing machine, adopt the standard reducer to adapt to the overall structure of the wire drawing machine, and combine the reducer with the installation box, spindle and reel effectively to form a Set to hardened gears as the main form of transmission wire drawing machine drive system.
2, ratio of flexible, convenient combination; 3, easy to install; 4, the cost is reasonable (2) the ratio of flexible, convenient combination; 3, easy installation; 4, the cost is reasonable ; 5, can be modular design; 6, such as the trend.
The hysteresis gear reducer uses a helical gear drive with an efficiency of 0.95-0.98 at closed meshing, a theoretical maximum transmission power of 50000 kW and a velocity v / (m / s) of 130. For a double enveloping worm gear, In the processing of high precision, good lubrication conditions, the maximum transmission efficiency can only reach 0.95, but in the general worm drive, the efficiency of the general range is 0.70-0.92. Due to thermal constraints, the maximum transmission power Pi (kw) = 750, but usually 50 kw. At present, high-speed, large-scale wire drawing machine has become the mainstream of the market, including high-power motors in the large-scale drawing machine on the application is quite common, the use of high transmission efficiency of hard tooth can work an important part of [ On the current situation, the installation of the secondary enveloping worm gear assembly of the main plant assembly staff to design their own design of the box, the worm gear meshing quality mainly by the experience and quality of the assembly staff, affecting the use of worm gear to pay Life of the human factor is more prominent. Hardened gear reducer is no problem with the assembly of the gear, the installation considerations mainly in the design phase, such as: how to locate the center, how to prevent oil tubing interference, how to ensure that the rack installation size, basically like the general Of the components can be installed. The convenience of the installation point of view, hardened gear reducer has no comparable advantages.
The cost of a product is affected by a variety of factors, including: manufacturing costs, purchased parts of the price, cost of sales and after-sales service costs. But the design and manufacturing costs account for a large proportion, which is beyond doubt [3]. How to optimize the product design, reduce manufacturing costs, is to improve the competitiveness of enterprises an important consideration. To a certain type of linear drawing machine, for example, the transmission power of 37Kw secondary enveloping worm gear to buy the price of about 1.4 million (not including the gear box), while the reducer price is about 1.2 million.
As the worm gear reducer manufacturing materials for the tin bronze, can be expected, with the international and domestic prices of non-ferrous metals, the worm will certainly pay the price paid will rise.
Modular design has gradually become the mainstream design model, its advantage is that some of the specialized production of products used in their own products, to improve product quality. Modular design, is to combine certain elements of the product together to form a specific function of the subsystem, the subsystem as a versatile module and other product elements for a variety of combinations, constitute a new system, resulting in a variety of Different functions or the same function, different performance of a number of products. For the standard hard-surface reducer, in a certain ratio, its installation size is the same, can be different in the speed ratio in the same reel specifications, by increasing or decreasing the number of reel or adjust the deceleration Machine speed ratio to meet the needs of users of different processes. This enables the use of mature technology of the reducer manufacturer to meet the needs of the user in a shorter production cycle, which is particularly effective for shortening the design and production cycle.
With the development of technology and computer application, the calculation of the gear tooth shape is more and more accurate. The development of the world transmission technology tends to adopt the hard tooth surface. According to statistics, due to the use of hardened reducer greatly promoted the machine''s light weight, miniaturization and improve the quality of performance, so that the machine''s working speed increased by a level. High-speed, high-precision and high-efficiency direction, and strive to small size, light weight, long life and good economy. Heavy-duty wire drawing machine to the trend of the same diameter wire, and high-speed wire drawing machine is able to improve the unit capacity, which coincides with the straight wire drawing machine consistent with the development trend.
At present, the domestic metal products industry, the overall technical level and equipment level, compared with the industrialized countries there is still a large gap in the drawing machine host, auxiliary equipment, lubrication technology, wire production, drawing die quality is still relatively backward. The face of China''s metal products industry, the actual situation, simply the pursuit of advanced large-scale, high-speed wire drawing machine is not realistic, is not desirable; for wire drawing machine designers and manufacturers, the work should focus on design, Manufacturing operation, operation, maintenance is simple, high production efficiency of the drawing machine |
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