CNC press brake is an important equipment in sheet metal processing, and its working accuracy directly affects the bending accuracy of the workpiece. Why add a compensation system to the CNC press brake during the workpiece bending process, as the maximum force is exerted on both ends of the slider and the reaction force during sheet bending causes concave deformation on the lower surface of the slider.

 

Why does the CNC press brake need to add a compensation system

 

In order to eliminate the adverse effects of slider deformation, it is necessary to compensate for the deflection deformation of the slider. The usual compensation methods include hydraulic compensation and mechanical compensation, both of which generate upward elastic deformation in the middle of the Compensation workbench to offset the deformation of the machine tool slider, ensure the accuracy of the machining joint surface, and improve the accuracy of the workpiece. At present, major foreign machine tool manufacturers use mechanical compensation devices; Domestic manufacturers will choose appropriate compensation methods based on the actual situation.

 

Introduction to Two Compensation Methods

 

Hydraulic compensation method

 

The hydraulic automatic deflection compensation mechanism of the worktable is composed of a set of oil cylinders installed in the lower worktable. The position and size of each compensation cylinder are designed based on the deflection compensation curve of the slider and the finite element analysis of the worktable. Hydraulic compensation is achieved through the relative displacement between the front, middle, and rear three vertical plates to compensate for the protrusion of the neutral plate. Its principle is to achieve protrusion through the elastic deformation of the steel plate itself, So its compensation amount can be adjusted within the elastic range of the workbench.

 

Mechanical compensation method

 

Mechanical compensation is composed of a set of convex wedge blocks with inclined surfaces, each of which is designed based on the deflection curve of the slider and worktable finite element analysis. The CNC system calculates the required compensation amount based on the magnitude of the load force during the bending of the workpiece (which will cause deflection deformation of the slider and worktable vertical plate), automatically controls the relative movement of the protruding wedge block, and effectively compensates for the deflection deformation caused by the slider and worktable vertical plate. The ideal bending workpiece mechanical deflection compensation is achieved by controlling the position to achieve "pre protrusion", A set of wedges forms a curve in the length direction of the workbench that matches the actual deflection, ensuring that the gap between the upper and lower molds is consistent during bending, and ensuring that the angle of the bent workpiece in the length direction is consistent.

 

Comparison of Two Compensation Methods

 

The advantages of hydraulic compensation:

 

As time goes by, hydraulic compensation does not have any wear issues, while mechanical compensation screws, wedge-shaped blocks, etc. will experience wear over time.

 

Hydraulic compensation takes up less space, while mechanical compensation takes up more free space in both height and width directions.

 

When using hydraulic compensation, the plate cannot be displaced because the lower workbench is in contact with the ground of the bent plate as a whole, and the positioning of the stop finger is very stable when it contacts the "clamping point" of the plate horizontally. Mechanical compensation only takes effect after bending, and there is a possibility of unpredictable errors.

 

Hydraulic compensation can also be adjusted when the workpiece is not removed, which is impossible in mechanical compensation.

 

The advantages of mechanical compensation:

 

Mechanical compensation has long-lasting stability and reduces the difficulty and frequency of hydraulic compensation maintenance (such as oil leakage caused by seal ring damage), and is maintenance free during the service life of the machine tool.

 

Mechanical compensation, due to the large number of compensation points, can achieve precise deflection compensation throughout the entire length of the workbench, making it easier for the press brake to achieve linear compensation when bending workpieces during operation, and improving the bending effect of workpieces.

 

Mechanical compensation is the use of a potential ruler to measure the position of the return signal, which serves as a CNC axis to achieve digital control and make the compensation value more accurate.

 

Problems encountered when using CNC press brake

 

When we use the CNC press brake to work, there is a high possibility of some error problems. At this time, we need to pay attention and check immediately if there are any problems. The first step of inspection is to check if there is any wear or damage to the mold currently used by the press brake. If this is the cause of the error, then replace the mold.

 

However, during the inspection process, if no damage is found, the second step is to check the balance between the slider and the workbench. If the site cannot meet the usage requirements, adjustments must be made according to relevant standards to ensure that this parallelism can be maintained within the standard range.

 

If there is still a certain degree of error in the angle of the workpiece, it may not be due to the mold or parallelism, but it may be due to the hydraulic system of the equipment, where the balance mechanism does not ensure that the pressure oil evenly enters the left and right cylinders, and adjustment is needed.

 

At this point, it is necessary to adjust the working mode of the press brake to the "jog adjustment" state. Remove the mold or other accessories from the equipment, so that the slider can stay on the mechanical block. Then, adjust the pressure gauge correctly by compressing the dial gauge head of the press brake by 3-4 millimeters, stepping on the foot pedal to increase the system pressure. When the press brake system is pressurized or unloaded, Check the clockwise deviation of the dial gauge. If it reaches the specified value, the operation can be stopped. Of course, in addition to the above methods, it should be emphasized that the press brake must be well maintained to maximize its advantages in use.

 

When selecting a press brake tooling, the following factors need to be considered:

1. Material type: It is very important to determine the type of material you will be bending. Different materials require different types of molds to complete bending operations. Common materials include steel plates, aluminum plates, stainless steel plates, etc. Ensure that the selected mold is suitable for the type of material you want to handle.

2. Bending angle and radius: Determine the bending angle and radius you need to achieve. Different molds have different curve shapes and bending angle limitations. Ensure that the selected mold meets your specific needs.

3. Mold quality: The quality of the mold directly affects the bending results and the service life of the mold. Choosing high-quality molds can improve work efficiency and reduce mold wear.

4. Manufacturer reputation: It is very important to choose a reputable mold supplier or manufacturer. They can provide high-quality molds and good after-sales service.

5. Cost: The price of the mold is another factor to consider. Choose suitable and cost-effective molds within the budget range.

Before making a purchase, it is best to communicate with the mold supplier or manufacturer, inform them of your needs, and seek their advice. In addition, you can visit some mold exhibitions or related industry forums to learn about the latest developments and technological trends in the market, to help you make wiser choices. Cngolin is a professional press brake tooling manufacturer,get more details from us quickly!

The Tungsten Carbide Rolls are used in high-speed wire rod rolling mills with high speeds up to 120 m/s. They are applied in the pre-finishing stand, finishing block as well as reducing and sizing stand. In the meantime, they are widely applied in the pre-finishing stand of the bar mill and pipe rolling mill.

 

We designs, develops and produces tungsten carbide for numerous industries; from construction, mining and tunnelling, to oil and gas, textiles, automotive and agriculture.
Our tungsten carbide rolls:
– Developed to customer specification
– Made exclusively from pure materials
– For hot and cold rolling, with or without pass grooves
– For tube rolling
– Available in various standard grades and in diameters of up to 415mm

What will influence the Quality of Tungsten Carbide Forging Die?

Choosing a suitable grade for a tungsten carbide cold heading die depends on several important factors. Here are some considerations:

 

Material to be forged: Understand the type of material you will be cold forging. Different materials have varying properties, such as hardness, toughness, and abrasiveness, which can affect the choice of Tungsten Carbide Forging Die grade.

 

Die wear resistance: Look for a tungsten carbide grade with high wear resistance. Cold forging involves repeated impact and pressure, which can cause wear on the die surface. Grades with higher hardness and cobalt content are generally more wear-resistant.

Toughness and fracture resistance: Cold forging also involves high forces, which can cause die fracture if the material is too brittle. Choose a grade with adequate toughness to withstand the impact and prevent premature failure.

 

Coating or surface treatment: Consider whether you need to apply a coating or surface treatment to enhance the performance of the die. Coatings like titanium nitride (TiN) or diamond-like carbon (DLC) can improve wear resistance and reduce friction, extending the life of the die.

 

Die design and geometry: Optimize the die design and geometry to minimize stress concentrations and maximize the distribution of forces. Even the most suitable tungsten carbide grade may under perform if the die design is flawed.

 

Cost considerations: While performance is crucial, it's essential to consider the cost of the tungsten carbide grade. Higher grades with advanced properties may be more expensive. Evaluate the cost-benefit ratio based on the anticipated lifespan and performance requirements of the die.

Tungsten carbide plate is a kind of plate with high hardness, toughness and good wear resistance, widely used in machinery parts and wear parts:

It has many advantage compared with steel plates:

• Excellent red hardness, high hardness, good wear resistance and chemical
  stability.
• Non-destructive ultrasonic flaw detection, without sand hole and pore.
• Tungsten carbide plate is sintered by HIP-sinter furnace, greatly reduce
  porosity, enhance compactness.
• Effectively prevent the occurrence of pressing defects by isostatic
  pressing machine, and the density is more uniform for cemented carbide
  plate blanks.
• Stress released, avoid the occurrence of cracks in the cutting and forming
  process.

Tungsten carbide segments dies -- a group of dies made of tungsten carbide used to make hexagon forging die for screw, bolts and nuts.

For the segments ,we have 3 methods to produce

1. press it from tungsten powder with mold into small segments
2. cut the hex cold heading dies into 6 pieces.
3. cut the segments from the plates.

The third method is the best and easiest way to make segments dies, you only need to have a middle speed or low speed wire cutting machine.

On July 9, 2024, US time, Semicon West 2024, one of the most influential semiconductor exhibitions in North America, grandly opened at the Moscone Center in San Francisco, USA. The exhibition will be held from July 9 to July 11, and the exhibition is still in full swing.

 

 

01 Baoshili Ultra Clean Series launched

 

As one of the few semiconductor-grade component manufacturers in China, Baoshili exhibited cutting-edge products such as Ultra-Clean PFA Tube, Ultra-Clean PFA Connector, Ultra-Clean HDPE Drum, and Cleanroom Wiper. The booth is located in the South Hall - Booth 160. We sincerely invite you to visit and communicate.

Since the semiconductor manufacturing process uses a large amount of ultra-pure chemicals and ultra-pure gases, as well as process links such as chemical treatment, in order to ensure the stability and reliability of the production process, it is necessary to select ultra-pure delivery pipelines, joints, valves and other components to transport related ultra-pure chemical raw materials. At the scene, Baoshili's Ultra-Clean PFA Tube,Ultra-Clean PFA Connector and Ultra-Clean HDPE Drum attracted the attention of a large number of semiconductor companies.

 

 

 

 

The Ultra-Clean PFA Tube and Ultra-Clean PFA Connector provided by Bioshine are widely used in liquid transportation, gas supply, chemical treatment and other links in the semiconductor manufacturing industry, and can meet the requirements of semiconductor processes. At present, Baoshili's ultra-clean series products have gone abroad and are sold all over the world.

 

 

02 Innovation leads, giants gather

 

Semicon West is known as the most influential semiconductor exhibition in North America. It attracts the world's top semiconductor manufacturers, research institutions and experts to showcase cutting-edge innovative technologies and applications, promote the integration and collision of the industrial chain, and has become an important technology exchange platform, gathering place and weathervane for global semiconductor companies.

The exhibition is hosted by the International Semiconductor Equipment and Materials Association. This exhibition also invited the world's top semiconductor companies to exhibit together, including more than 600 exhibitors such as TEL and Nikon.

 

 

 

 

 

 

 

03 Trend Insights Report Release

 

At the conference, SEMI released the "Mid-Year Total Semiconductor Equipment Forecast – OEM Perspective". The report pointed out that the global total sales of semiconductor manufacturing equipment by original equipment manufacturers are expected to set a new industry record, reaching US$109 billion in 2024, a year-on-year increase of 3.4%. Semiconductor manufacturing equipment is expected to continue to grow in 2025, and sales in 2025 are expected to hit a new high of US$128 billion, driven by the front-end and back-end market segments.

 

 

 

 

Semicon West 2024 is in full swing
Meet at South Hall, Booth 160
Baoshili will see you there!

When it comes to construction projects, choosing the right fasteners is crucial for ensuring the durability and stability of your structures. Coil nails have become a popular choice among professionals due to their numerous advantages. In this blog post, we’ll explore the top 5 benefits of using coil nails for construction, helping you understand why they are the preferred option for many builders.

 

 

1. Efficiency and Speed

 

One of the primary benefits of coil nails is their efficiency and speed. Coil nails are collated in a coil, allowing for continuous nailing without the need to reload frequently. This feature significantly speeds up the construction process, making it ideal for large-scale projects. With coil nails, you can complete your tasks faster and more efficiently, saving both time and labor costs.

 

 

2. Strong Holding Power

 

Coil nails are known for their strong holding power, which is essential for construction projects. The design of coil nails, especially those with ring shanks, provides superior grip and prevents the nails from loosening over time. This ensures that your structures remain stable and secure, even under heavy loads and adverse weather conditions.

 

 

3. Versatility

 

Coil nails are incredibly versatile and can be used for various construction applications. Whether you’re working on framing, roofing, siding, or decking, coil nails are suitable for different materials and surfaces. This versatility makes them a valuable addition to any builder’s toolkit, allowing you to tackle a wide range of projects with ease.

 

4. Durability and Corrosion Resistance

 

Durability is a key factor in construction, and coil nails excel in this area. Many coil nails, such as those made from galvanized or stainless steel, offer excellent corrosion resistance. This is particularly important for outdoor projects where exposure to moisture and harsh weather conditions is inevitable. Using coil nails ensures that your structures remain intact and rust-free for years to come.

 

 

5. Cost-Effectiveness

 

While coil nails may have a higher upfront cost compared to traditional nails, their long-term benefits make them a cost-effective choice. The efficiency, durability, and strong holding power of coil nails reduce the need for frequent repairs and replacements. This translates to lower maintenance costs and a longer lifespan for your construction projects, providing excellent value for your investment.

 

 

Why Choose Our Coil Nails?

 

At Hongfeng Metalware, we specialize in providing high-quality coil nails that meet the demands of various construction projects. Our coil nails are crafted with precision and high-grade materials, ensuring exceptional durability and corrosion resistance. Whether you need galvanized steel, stainless steel, or copper coil nails, we have the perfect solution for your construction needs.

 

 

Our coil nails offer:

 

Superior Holding Power: With ring shank designs, our nails provide a strong grip, preventing loosening over time.

 

Corrosion Resistance: Our hot-dipped galvanized and stainless steel nails are built to withstand harsh weather conditions.

 

Versatility: Suitable for various construction materials and compatible with most nail guns, our coil nails ensure efficient and reliable performance.