The DBC 160 is a column moving type of high-capacity boring machine equipped with a Ø160 mm boring spindle to deliver the highest power and torque in its class. The machine design is optimized for processing a wide variety of large work pieces including valves used in industrial plants, ships, and the oil gas industry.
Powerful Cutting The DBC 160 spindle is equipped with a 45 kW, 3-stage gearshift and a 160 mm diameter boring spindle, which is specially designed for stable machining when the W-axis extends by 800 mm. Equipped with the highest spindle power and torque in its class, the DBC 160 offers maximum performance for heavy duty machining, while its extended guideway span has increased structural rigidity and minimized vibration to enhance stability during heavy duty cutting, and the adoption of a hydraulic counter balance cylinder has stabilized Y-axis feeding. During an operating test with the W-axis extended by 800mm, the new model's high-power spindle achieved the following chip removal rates: 1440 cm3/min in face milling; 1016.1 cm3/min in drilling, and M48 x 5 in tapping. Precision Work in Largest Machining Area The DBC 160 model accommodates workpieces with a diameter of up to Ø3400 mm and a maximum weight of 20 tons. With X/Y/Z axes travel distances of 4000/2500/1600 mm, respectively, the model offers the greatest machining area of all Doosan’s famous DBC Series. Its rotary table ensures accurate B-axis control with high-precision encoder and increased clamping force. In addition, linear scales are applied to all the axes as a standard feature, further increasing machining accuracy. Convenience of CNC and Various Head Attachments Operator's convenience has been further improved with an operation panel featuring the unique hot keys of the DBC Series and an operator-friendly ergonomic design. The standard, pendant-arm operation panel is tiltable horizontally and vertically for maximum user convenience. Among the Hot Key functions, Work Load Control has been adopted to enable the optimized setting of parameters according to the weight of the workpieces - a highly useful function when processing large workpieces. The new model also offers diverse head attachment options to meet the specific requirements of our customers, such as CNC contouring head and angled head as well as delivering higher productivity and optimum flexibility. Realizing customers needs with superior technology and optimum power, the new DBC 160 boring machine offers a highly rigid structure, heavy duty machining, and ultimate precision, thereby achieving unmatched productivity for large size workpieces. More information, please visit Doosan Machine Tools
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![]() Welding involves joining metals by heating them until they melt. The practice dates to the Bronze Age when humans melted copper alloys and pounded them together on flat surfaces such as anvils using hammers. Today, welded items are everywhere, from the cars you drive to the planes you fly and the skyscrapers in which you work. Welding techniques are constantly evolving and incorporate the use of powerful lasers, robots and computers. Laser Technology"Laser" is an acronym for "light amplification by stimulated emission of radiation." They represent high energy beams generated at one or more discrete frequencies. Two types of lasers can be employed for welding. The first kind involves hard optics, or the use of mirrors and lenses to focus and deflect the laser beam. The second kind involves fiber optic cables to channel the laser beam with little loss of energy. One of the main advantages of fiber optic lasers is that they allow for the repositioning of the laser beam, whereas hard-optic lasers require the object being worked on to be moved. Welding With LasersLike other welding techniques, lasers are designed to heat a surface to join it with another. Laser welders accomplish this by delivering a pulse of light focused on a small area measured in millimeters, if not tenths of millimeters, in diameter. As the surface absorbs the laser's light, it vaporizes the metal, creating a gap known as a "keyhole." When the pulse ends, the liquefied metal surrounding the keyhole flows inside, resulting in a weld between the two surfaces. Advantages of Laser WeldingLaser welding offers certain advantages over traditional welding techniques. Because lasers generate a minimal amount of heat and can be precisely focused on any surface, the resulting welds are relatively small. This makes laser welding particularly suitable for thin products such as electronics or glass-to-metal seals. Another key advantage of laser welding is its fast welding rate in applications such as gas metal arcs and submerged arcs. Also, laser welding allows for better access to welding locations and doesn't generate any debris during resistance welding processes. ![]() MAY SHUAY is a professional welding machines manufacturer, supplier and exporter based in Taiwan. We always seek for excellent quality, innovative research and development of products and good after sale services in the field of automatic welding equipment manufacturing. We offer customers the options of laser welding machine, seam welders, precision plasma welding machine, inverter TIG welders, MIG welders and plasma cutting machine. Our variety and complete line of welding machines offer customers a one stop shopping selection. Our popular laser welder equipment: All of MAY SHUAY laser machines are specifically designed for high speed seam laser in widely welding applications. It can also work on welding two different types of metal such as copper- nickel, titanium-nickel, copper- titanium, and low carbon steel-copper, etc. We are recognized as a leading world-class brand in the welding industry. If you are interested in our laser welders or other seam welding equipments, do not hesitate to contact us! Source: Chron SIGMA CNC won the Taiwan Excellence Award of 2017 – Auto Swing Divided Angle Head system (ASDH-AC1)6/22/2017 Five Taiwan patents. The key module of cutting machine and vastly used in the work piece cutting of aerospace and car industry, and mold making area. Quality above the world level. 1. Precise indexing. Automatic indexing for A and C axis. Specifically produced using high-precision and small-backlash gear, decoder, and optimal software compensation technique to attain an indexing precision of 1 degree for A and C axes. 2. Precise positioning of A and C axes: 3 seconds Using a Sigma-designed software with friendly HMI and compensation function. 3 High clamping force. Adopting a big gear disk of 320 mm outer diameter to produce large contact area, and hence creating a large clamping force of 6000Kgf. 4. Linear positioning accuracy for Y and Z axis:0.05mm. Adopting one rail at the top face and stage-type orthogonal two rails in the front face of the Y axis attaining stable moving, and two rails for both lateral sides of the Z axis attaining gravidity driving. 5. Superior in high speed cutting and heavy cutting: Adopting two-stage star-type gear box and direct-connected spindle, finished with precise assembly to attain a stable high torque of 750 N-m in low speed and a maximal rotational speed of 10000 rpm. 6. Compact ad light Using the spindle servo-motor to drive the index head, not an individual additional servo-motor. As such, it has the advantage of low weight and compact shape, and low production cost. The dimension of the product is 656 mm long and 494 mm in diameter. 7. High rigid and reliable heavy cutting Design of short distance between transmission and spindle centerlines. Using precise orthogonal bevel gears to attain stable transmission with a maximal torque of 750N-m and heavy cutting of 600cc/min material remove rate. 8. Automatic head change function With the control of computer, the index head may be automatically transported into the milling holder or stored in the special designed head storage house. About SIGMA![]() SIGMA holds the fundamental concept of “Expertise, Innovation, Practice.” Constant efforts, renovations are made to meet ever changing market challenges. With scientific management, SIGMA strives for high efficiency production, stable quality control, best sales and after-service. That is why SIGMA is able to reap customers’ praise, reliance and confidence. We introduce one new product every year, making outstanding contributions to machine tools industry and raising our own technical levels in the brand new high tech age. “Customers’ demands motivate us to make constant progress, serving our customers perfectly is our ultimate purpose.” This is the main principle of SIGMA’s R&D and manufacturing. To offer customers with the most efficient machine tools and perfect after-services are our eventual target and purpose. ![]() As has been the case for many companies in the machinery manufacturing sector, business for Cima Impianti has changed dramatically over the past decade. The Italian maker of tyre production machinery states that it has required a “great capacity to evolve and adapt to the new market situation” in order to gain the flexibility it needs in both people skills and machining process equipment. The precise makeup of Cima’s activities within the retreading sector varies from year to year and depends both upon the individual contracts it receives and trends within the market. Thanks to its deep market knowledge and the flexibility it has fostered, Cima reports it has been able to develop new equipment and also adapt existing products to meet evolving market requirements. Today, the company offers a portfolio that covers the entire retreading process from passenger car to OTR tyres, a range of equipment that includes CNC peeling, buffing and grooving machines along with a line of CNC extruders, skive fillers and cushion gum application machines. ![]() All these machines are designed as well as manufactured by Cima Impianti and complement the company’s mould business – but Cima says curing press manufacture occupies the “unchallenged top spot” in its production activities. It offers 25 sizes of retreading curing press models, in six different versions, and the company states that “whatever rubber related product you need to cure, Cima has a suitable press or will develop a customised one for you.” During the past two decades, it has also developed a number of presses specifically designed for the curing of rubber tank tracks, rubber coated traction wheels, wheelchair tracks, pre-cured circular treads and solid tyres. Cima considers bladderless (tubeless) systems a particular company strength, and prides itself on the ability to provide bespoke solutions for sectors such as aviation tyre retreading, businesses where end users, typically new tyre manufacturers, require very specific customisations. As already mentioned, evolving market requirements necessitate the ongoing rollout of new and improved products. The most recent innovation that Cima has adopted for its curing presses is the introduction of self-lubricating materials that eliminate the need for centralised lubrication. The manufacturer states that the use of self-lubricating materials is a “substantial improvement” that benefits both the work area and the end product by eliminating the use of grease, a substance that can contaminate the product and end up smeared around the machine. The system was initially introduced in Cima’s truck tyre presses and is now being gradually rolled out in all models of Cima press. Another sign of Cima’s flexibility is its diversification into areas outside the traditional tyre sector. Some time ago it established a new division catering to the steel industry, and today the company manufactures, assembles and tests plants for rod mills and other types of machinery. Additional recent markets Cima has entered include moulds for memory pillows and for stone grinding. Today’s market is one that requires companies to keep in regular contact with their customers in order to maintain a strong relationship and to keep pace with any changes taking place. This desire to keep customer relationships strong prompted Cima to venture into the field of consumable material supply. Three years ago, it opened a new division to look after this business, and after restricting its activities to the Italian domestic market for the first two years and searching for suitable suppliers that produce quality materials, the company has now begun supplying materials to the rest of Europe.
With the same goal of strong customer relationships in mind, a new company – Cima Technical Services and Marketing LLC – was founded last year in cooperation with Cima’s US distributor, Central Marketing Inc. The purpose of this company is to deal with aftersales service, technical support related to the commissioning of new equipment, as well as training end users in retreading processes and in equipment maintenance. Cima Impianti stresses that it is “very well aware of the current market difficulties” and says it is doing “everything possible to support those who keep believing in this business.” This attitude has been confirmed by a recent investment of over €800,000 in a new high-tech milling machine; this is now being commissioned at Cima’s production facility. The new investment aids Cima in its aim to be a ‘one-stop-shop’ that offers everything needed for its customers’ tyre businesses. Source: Tyrepress Improving market conditions helped Volvo Construction Equipment (Volvo CE) report strong growth in sales, profitability, order intake and deliveries in the first quarter of 2017.
During the first three months of 2017 Volvo CE saw net sales jump by 30 percent to SEK 16,163 M (SEK 12,452 M in Q1 2016). Operating income was also positively impacted, rising to SEK 1,617 M, up significantly compared to SEK 341 M in the first quarter of 2016. In the first quarter of 2017 Volvo CE also enjoyed an increase in order intake, which rose by 34 percent to 17,487 machines, with increases in orders coming from all markets, but particularly China and Europe. Deliveries were also up 34 percent during the period, to 16,369 machines. Operating margin also saw good improvement, at 10 percent, compared to 2.7 percent in the same period the year before. At Conexpo/Con-Agg in Las Vegas, Volvo CE unveiled a new generation of its largest wheel loader – the 50-ton class L350H. Among other products on display in Las Vegas was the L260H wheel loader, a 34-ton machine purpose-built to load on-highway trucks in just two even passes. Volvo CE also launched ActiveCare Direct in North America, a telematics monitoring service supported through the company’s dealer network. Volvo CE has built a dedicated uptime center with a team of analysts who proactively monitor and report on customer fleets throughout the United States and Canada. Volvo's market continued to improve during the quarter, with all regions (with the exception of South America) showing growth. The European market was up 17 percent, driven by increased demand in Germany, the UK and France. North America was up 1 percent, with improvements in compact equipment and large excavators offsetting lower demand in other product areas. South America saw further declines, while the total market in Asia (excluding China) was 10 percent above the same period last year, boosted by improvements in India and Korea. There was also strong growth in Indonesia, driven by a recovering mining sector, while demand shrank in both Turkey and the Middle East. China, meanwhile, continues to recover, with the market growing by 48 percent during the first quarter, compared to the same point the previous year; driven by a surge in demand for excavators, which increased by 99 percent during the period. “After years of tough market conditions, the Volvo CE business is growing again,” commented Volvo CE’s president Martin Weissburg. “Higher sales volumes linked with increased internal efficiency and a lower cost base helped us deliver good profitability levels during the quarter. Volvo CE is on the right track, the improvement plan is yielding results and there are further opportunities to improve the long-term competitiveness of the company.” Source: Construction Equipment |
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