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2013-11-01 10:09 Engraving machine CNC technology become more perfect

2013-11-01 10:09Engraving machine CNC technology become more perfect

Engraving machine industry after decades of development, applied more widely , with the recent advances in technology , digital technology becomes more perfect, especially in the high-end CNC technology has made great breakthroughs .

As consumer demand for high-end products continue to increase, obviously can not rely on hand-made to meet the needs of the market and consumers , because a limited number of artisans , craftsmen take decades more nurturing , which appeared in the high-end wood products in short supply situation , so he gave hope to give producers a woodworking engraving machine , making the development of more high-end intelligent, computer software operation more simple , high-end CNC technology to improve the future , woodworking engraving machine can naturally produce more realistic artificial carving product, and then just a little manual polishing can be considered high-end products into the high-end market to fill the gap in the market . The next step in the furniture industry and the rapid development of production and processing environment of the company product updates , woodworking engraving machine is bound to be constantly expanding range of applications , application level will gradually increase , especially high-end natural wood engraving machine even broader prospects for development .
As a leading manufacturer of Cnc Engraving Machine , Jinan River CNC has increased in recent years, the development of high-end wood engraving machine , relying on the company’s strong R & D capability , after obtaining the high-end CNC technology , product features increasingly sophisticated , more broad market prospects , the current has formed an annual output of more than a thousand high-end CNC stone engraving machine, advertising engraving machine, engraving machine foam production base of high-tech equipment .

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Analysis of Causes of Swelling of Hydraulic Cylinder Wall of Hydraulic Press

The main reasons for the swelling of the cylinder wall of the hydraulic cylinder of a Hydraulic Press are:

The strength and rigidity of the hydraulic cylinder itself is not strong

According to the theory of uniformly distributed load in material mechanics, the strength and stiffness are distributed in a parabolic condition. It is proportional to the uniform distribution pressure of the operating oil pressure and proportional to the 4th power of the uniformly distributed load length. Therefore, the cylinder wall expands the most. It is easy to occur in the slender cylinder, and the swelling direction is often near the midpoint of the highest operating pressure chamber. This requires special attention to check the strength and rigidity of the cylinder when designing.

Abnormal high pressure during operation of hydraulic press

  • 1. Pistons with heavy load or high speed have great inertial force. When suddenly intermittently, the pressure in the working chamber increases instantly, and even exceeds the maximum working pressure several times, causing the cylinder bore to expand.
  • 2. The hydraulic cylinder is often overloaded. For example, when the packing machine is about to end, the packing is suddenly interrupted, and then the packing is restarted (commonly known as cold packing), which will cause the instantaneous oil pressure to exceed more than 2 times, which will easily cause the cylinder diameter to expand.
  • 3. The cushioning equipment is completely inoperative. It is in a fully open situation, so that the working piston cannot decelerate and suddenly hits the cylinder head and may bounce back, causing instantaneous overpressure in the working chamber.

The raw material of the cylinder barrel is defective or the cylinder structure design is unreasonable

The cylinder tube misuses low-strength steel, which reduces the yield point and safety factor. After normal use, the cylinder diameter will inevitably expand. For the cylinder wall of a hydraulic cylinder with a long length, no reinforcement hoop is provided at the center of the outer ring, which causes the load force to be unacceptable.

The expansion of the cylinder wall of the hydraulic cylinder causes leakage and affects the normal operation of the hydraulic press. Therefore, the operator must operate in accordance with the regulations in daily life to strengthen daily maintenance operations; apply a reinforcement structure to the cylinder wall of the hydraulic cylinder; assume that the inner diameter has a large deformation after measurement , The reinforcement method should be adopted first. Regarding the repair of the inner wall, the grinding method is generally used.

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Collimator lenses for LED headlamps

Polycarbonate provides a high-performance and cost-effective alternative to glass and PMMA

Light-emitting diodes (LEDs) are the light source of the future, especially those versions that emit white light. It is predicted that they will provide significant savings – for example, in street lamps, building illumination, advertising boards, automotive lighting technology and liquid-crystal displays – because of their low energy consumption and long service life. Polycarbonate is the ideal material for producing the focusing optics of these LEDs. Bayer MaterialScience AG therefore invested heavily in injection-molding equipment in order to develop this area of application for its Makrolon® polycarbonate. “We can now produce components for high-precision focusing optics from special, custom-made grades of Makrolon®. Moreover, we can measure the optics precisely and correlate simulation of the emitted light’s profile extremely accurately with its geometry,” explains Martin Döbler, expert in plastic optics in the Polycarbonates Business Unit at Bayer MaterialScience.

For example, the company worked together with Light Prescriptions Innovators (LPI), a leading developer, manufacturer and licenser of optical components for non-imaging optics, to produce a collimator lens made from Makrolon®. These kinds of lenses play a key role in LED automotive headlamp designs and are used to gather LED light with minimum losses and direct it onto the road in line with safety and lighting requirements. The “RXI” collimator lens designed by LPI for this application has free-form surfaces with non-symmetrical geometries and focuses the total light on its own, as opposed to traditional lens systems for this area of application, which consist of several components. “The RXI lens is extremely compact and has a highly complex geometry, often with extreme changes in wall thickness that are very close together. So it’s a particular challenge to produce this lens in polycarbonate by injection molding,” says Rainer Protte, Team Leader, Advanced Processing in the Polycarbonates Business Unit at Bayer MaterialScience.

To satisfy the high requirements, a two-cavity mold with a complex system of temperature control is used. This makes it possible to produce lenses using a double-layer injection-molding technique, in which a premolding is created in the first cavity and then overmolded in the second cavity to give the part its final shape. “This technique and the complex system of temperature control enabled us to produce lenses in exceptional surface quality, while also avoiding sink marks – which seriously impair the optical efficiency of the lenses – and minimizing cycle times,” says Protte.

In the field of LED focusing optics, polycarbonate offers several advantages over PMMA, which is also transparent. Thanks to its high heat resistance of up to 130 °C, polycarbonate copes reliably with the maximum operating temperatures of LEDs. It can also be used to produce thinner-walled lenses because it has a higher refractive index than PMMA. Its god toughness means guides, housing parts and fixing elements such as snap-fit hooks can easily be integrated into the lenses. This toughness also makes for robust, break-resistant lenses which do not damage easily in everyday use. Polycarbonates boast a good thermal conductivity, which reduces cooling and cycle times and therefore boosts productivity. This is particularly vital for optics with free-form surfaces because these typically have wall thicknesses of more than ten millimeters. As the square of the wall thickness is employed in the cooling time formula, very long cycle times have to be endured for these types of plastic optics.

Polycarbonate also offers advantages over glass. High-precision injection molding can be used to produce the fine lens details more cost-effectively than is possible with glass. What’s more, polycarbonate lenses are much lighter and do not have to be polished.

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What is the component group of the linear motor drive device of the high-speed machining center

Nowadays, many high-speed machining centers use linear motors to drive linear three-axes. The way high-speed machining centers use servo motors + rolling screws to drive linear three-axes has gradually decreased. At present, most high-speed machining centers have adopted linear The motor drives the linear three-axis, and the linear motor directly drives the linear three-axis, which directly eliminates the part that converts the rotary motion into the linear. The following editor will introduce what components the linear motor drive device of the high-speed machining center consists of.
Linear motor drive unit composition
The linear motor drive device is composed of a rolling guide, a position measuring system, and a linear motor. At this stage, domestic high-speed machining centers that use linear motors to drive linear three-axis are relatively few, but now high-speed machining centers in advanced foreign countries have slowly begun to use linear motors to drive linear three-axis, such as the high-speed The machining center adopts linear motors, and its feed speed is 2-3 times faster than the speed of traditional servo motor + rolling screw. Traditional servo motor + rolling screw drive linear three-axis feed speed is the highest At 48m/min, the feed speed of the linear three-axis drive using a linear motor is up to 120m/min. It can be seen that the feed speed of the traditional servo motor + rolling screw drive linear three axis is not as fast as that of the linear motor drive linear three axis.
Features of Linear Motor Driven Linear Three-axis
The linear three-axis driven by the linear motor has the characteristics of fast speed, excellent rigidity and high efficiency. Nowadays, the use of linear motors to drive linear three-axis is still not the mainstream, because the linear three-axis technology of linear motors is still mature enough, and there are many problems in linear motor technology, such as high price, high heat generation, and poor transmission stability. However, it is foreseeable in the future that linear three-axis technology driven by linear motors will gradually mature and the price will gradually decrease. Therefore, in the future, linear three-axis technology driven by linear motors will slowly be adopted by various cnc machine tools, and servo motors + Rolling screws will gradually decrease in cnc machine tools. The cruel market and the survival of the fittest understand the truth, and those who should withdraw from the stage will inevitably withdraw.

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Application advantages of laser cutting technology in automobile manufacturing

The automobile manufacturing industry is a very high-tech industry. It not only requires practical performance, but also beautiful appearance. The speed of replacement is increasing day by day. The traditional cutting method has low efficiency and low precision, which is difficult to meet the cutting needs of modern automobile manufacturing.

The need for low-cost processing.With the development of laser application technology, laser cutting technology is widely used in various aspects of automobile parts, automobile body, automobile door frame, trunk, roof cover, etc., basically covering all the application fields of automobile manufacturing industry.laser Cutting Machine fiber is to complete the cutting by irradiating high-energy laser beam on the surface of the workpiece and irradiating fusion to generate deformation.

Under the premise of combining with software, CAD and other drawing tools can be used to complete high-strength steel structures with complex contours Part cutting to meet individual processing needs. Laser cutting is a very effective processing method from a technical or economic perspective, and its advantages are very obvious:

Advantage 1 Reduce production cost

Cnc fiber laser cutting machine does not require a mold, which saves mold investment. The cut product will not be deformed by extrusion. The processed product has good quality and no need for secondary grinding. It can save unnecessary processing steps and reduce production costs

Advantage 2 Improve production efficiency

The cutting speed of the fiber laser cutting machine metal can reach 100 meters per minute. Compared with traditional cutting, the positioning accuracy of laser cutting is higher and the cutting speed is faster, which helps to directly shorten the processing and manufacturing cycle, improve production efficiency, and shorten the delivery time;

Advantage 3: good cutting quality

It can accurately cut complex patterns, and it is convenient to modify, small error, no burrs on the cutting surface, and the quality of the product is better. When cutting medium and small batches, large areas and complex contours, the fiber laser pipe cutting machine is more flexible .

Advantage 4: Large machined surface

Fiber laser tube cutting machine has a large processing surface and can be cut by the whole board.This is not easy to achieve with other processing equipment.

Advantage 5 Advantages Low maintenance costs later

The maintenance cost of mechanical products is very expensive, and the fiber laser metal cutting machine has stable performance, ruggedness and continuous work, and is not easy to damage. It has a great advantage in later maintenance costs.

As a leader in domestic laser technology, LXSHOW has maintained a long-term good cooperative relationship with many automobile manufacturers. The three-dimensional five-axis laser processing equipment developed for the automotive thermoforming line industry can solve the cutting and trimming of high-strength steel thermoforming parts. Problem, high precision, fast speed, good dynamic performance, equipped with high-performance rotary table, can meet the automotive industry’s beat requirements.

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Differences between DSC and PLC control systems

DSC and PLC control systems are very commonly used systems in the industrial control industry, so what are the differences between these two control systems? Which is better? PTJ will introduce to you.

In fact, the design principles of DCS and PLC are quite different. PLC was developed by mimicking the original relay control principle. In the 1970s, PLC only had switch logic control. The first application was the automobile manufacturing industry. It stores instructions for performing logical operations, sequence control, timing, counting, and operations; and through digital input and output operations, it controls various machinery or production processes. The control program compiled by the user expresses the technological requirements of the production process and is stored in the user program memory of the PLC in advance. When running, it is executed one by one according to the contents of the stored program to complete the operations required by the technological process.

There is a program counter in the CPU of the PLC that indicates the storage address of the program step. During the program running, the counter is automatically incremented by 1 every time the program is executed. The program is executed from the initial step (step number is zero) to the final step (usually END) Instruction), and then return to the initial step of cyclic operation. The time required for the PLC to complete a cycle operation is called a scan cycle. For different types of PLC, the cyclic scanning period is between 1 microsecond to tens of microseconds. The cyclic operation of the program counter is something that DCS does not have.

When users choose the DCS and PLC control system, they can choose according to their own situation and requirements, so that they can be handy when running in the future.

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New Presses, Robots And Low-Pressure Process

At its annual Technology Days conference and exhibition in Lossburg, Germany, Arburg GmbH + Co. KG introduced its largest all-electric injection machine yet, available with optional hydraulic accumulator-assisted injection, as well as the company’s largest vertical hydraulic machine to date and a line of entry-level robots with enhanced programming functions. The April meeting also demonstrated Exjection, a new sliding-mold, low-pressure “intrusion” process that allows production of long parts not suitable for extrusion.

Arburg expanded its electric-driven Allrounder A series with a new 220-ton Allrounder 570 A model (570-mm tiebar spacing). It is available with the company’s largest size electric injection unit, capable of a 15.3-oz, 28.9-in.3 shot—or with Arburg’s largest accumulator-assisted hydraulic injection unit for higher speed (55 mm/sec) and shot sizes up to 29.1 g/55.1 in.3 The machine also has Arburg’s Selogica Direct touchscreen control.

Arburg expanded its Allrounder V line of vertical/vertical machines with a new 55-ton Allrounder 375 V model, the largest in this hydraulic line. It has a fixed lower mold platen and down-stroking C-clamp.

Meanwhile, Arburg rolled out entry-level, three-axis, top-mounted beam robots, called the Multilift V Select series. They are based on the Multilift V series with its cantilever design and ease of integration with Arburg’s press controls. But the new models have a predefined set of features so they can be offered at lower cost. Sizes are available for each machine in the Allrounder A and S series. They handle maximum loads of 13.2 to 33 lb.

They have pre-programmed sequences for removing and setting down molded parts, although user programming of other actions is possible. A new robot teach-in function on the Selogica Direct machine control eases programming. In this teach mode, the robot is moved manually in a step-by-step sequence, while the positions are recorded automatically by the controller. The Selogica Direct control generates the robotic sequence and integrates it into the machine cycle. Robot movements can then be fine-tuned through the controller.

EXJECTION IN ACTION
A new low-pressure process that can mold long, thin-walled profiles integrating functional or decorative geometries was demonstrated by co-developers IB Steiner engineering consultants and Hybrid Composite Products GmbH, both of Spielberg, Austria. Their Exjection process provides a means of incorporating discrete features into a long profile, which is difficult or impossible to achieve by extrusion, while also accommodating low clamp tonnage.

In Exjection, a long mold slides either vertically or horizontally past a stationary injection gate. The process fills the mold continuously from the side rather than from the end, keeping flow length short, as the gate is always just behind the melt front. This method, sometimes called intrusion molding, reduces clamp requirements and stresses in the part. Proprietary controls coordinate mold travel with injection speed to ensure part quality.

Exjection allows a small press to mold parts up to 1000 mm long with a cross-section up to 10 x 16 mm and wall thickness from 1.5 to 1.8 mm. IB Steiner sells a license for 40,000 Euro ($61,500) per machine, which includes the control software. Both Arburg and Engel offer machinery for the process (see Learn More). At Arburg’s event, the Exjection process ran on the new Allrounder 375 V vertical hydraulic press, which was modified with an electric injection unit for precise screw-position control, electric-driven mold carriage and core pull, plus cavity-pressure sensors at the gate and end of fill.

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Professional manufacturer and supplier of automatic casting grinding machine in China

Professional manufacturer and supplier of automatic casting grinding machine in China

                  

Our company undertakes the advantages of customized three-axis, four-axis , five-axis ,six-axis,seven-axis grinding equipment:

1. According to customer's workpiece grinding requirements, we can choose and order suitable grinding equipment, which not only saves cost, but also has grinding pertinence.

2. The motor and reducer of the customized equipment adopt imported products to ensure the stability of the equipment.

3. The programming mode of the control system is teaching programming, which is convenient for customers to learn and operate.

Generally, it can be operated within one hour, saving time and reducing the difficulty of programming.

4. Suitable for grinding and customization of workpieces weighing 1-100 kg, with a length, width and height of less than 1 m cubic metre. The workpieces have a wide range of applications.

5. Tool replacement is simple, preparation time is shortened and efficiency is improved.

6. Equipment grinding efficiency is usually several times that of workers, and can grind workpieces continuously for 24 hours.

7. The grinding wheel is made of high wear-resistant material, which can be used for a long time, and can ensure the grinding effect and save the grinding cost.

8. Customized equipment workpiece grinding is applicable to a wide range of materials: plastic, aluminum, iron, alloy and steel castings can be;

9. Customized polishing equipment is equipped with dust removal system.

10. Customized equipment price advantage, our company operates at a low profit, the same equipment is lower than the market price;

        

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What to pay attention to during the use of laser marking equipment

Many friends are not unfamiliar with laser marking equipment. It is a device that uses lasers to mark objects. It is currently used in many fields, such as electronics and automobile industries. So what should be paid attention to during the use of laser marking equipment? Today, CUT WIKI will give you a specific introduction.

  • 1. Pay attention to the combination of equipment performance and materials. There are many types of laser marking equipment. There are metal laser marking equipment and non-metal laser marking equipment. In this way, it is necessary to allow different equipment to print different materials instead of mixing them, such as metal laser marking. Marking equipment will be applied to metal products, and non-metallic laser marking equipment will be applied to non-metallic materials.
  • 2. Pay attention to details. When using laser marking equipment, pay attention to that the anode of the power supply cannot be suspended to prevent breakdown or sparking with other electrical appliances. If there is an abnormal situation, then stop the emergency first. The switch is turned off, and then the main power is turned off, and then the inspection can be carried out. At the same time, it is also necessary to keep the surface of the laser marking equipment clean, and indoor hygiene must be done well.
  • 3. Do a good job in maintenance. It is also very important to do a good job of maintenance when using laser marking equipment. If it is a metal marking equipment, it is necessary to prevent it from rusting, which will reduce its performance. At the same time, pay attention to moisture-proof treatment. Sometimes it is necessary to lubricate the laser marking equipment to ensure it It is normal at work, otherwise there may be frequent failures.

When using laser marking equipment, everyone must pay attention to the above contents, especially some details. Only by preventing and controlling the details, can the service life of the laser marking equipment be extended and its function Get the maximum use. In addition, friends who need laser marking equipment can consult the staff of the website.

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Working mode of four column hydraulic press

Today, I’d like to introduce the working mode of the four column Hydraulic Press:

1. Inching: press the corresponding button to generate the corresponding action, and release it to stop the action.
2. Manual: press the corresponding button to generate corresponding action until the limit position.
3. Semi automatic:

  • (1) constant pressure control: the sliding beam drops rapidly → drops slowly → pressurizes to the upper limit of DJ of the electric contact pressure gauge and then maintains the pressure delay → pressure relief → return (finally stops)
  • (2) Fixed range control: the sliding beam drops rapidly → drops slowly → pressurizes. When the sliding beam touches the proximity switch XK, it sends a message to start pressure holding delay → pressure relief → return (last stop)

Features of customized four column hydraulic press: three beam and four column structure, economical and practical. The hydraulic control adopts cartridge valve integrated system to reduce dew point, reliable action and long service life. It can realize two forming processes of constant pressure and constant range.

It has the function of pressure holding delay. The working pressure stroke can be adjusted within the specified range. It adopts button centralized control to realize manual, semi-automatic There are three automatic operation modes.

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