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In the field of metal fabrication, the selection of press brake tooling is critical. It directly affects the quality, efficiency, and cost of the bending operation. In this article, we’ll provide you with a comprehensive guide to selecting a press brake tool to help you gain insight and make a more informed decision.
Press brake tooling refers to a series of tools and molds applied to the press brake, press brake as a special equipment used to bend sheet metal, with the help of the role of the mold, can be under pressure to transform the sheet metal blank into a specific shape and size of the parts. The press brake molds are mainly composed of a punch and the bottom of a concave die, which are used in conjunction with each other for punching, forming and separating operations of sheet metal. The molds used for forming have cavities, and the molds used for separating have blades.
For starters, it should be clear that the core purpose of a press brake mold is to allow the press brake to bend various metals into different angles. In this process, the sheet metal slides between the top and bottom dies (i.e., the punch at the top and the concave die at the bottom), and the punch presses down onto the concave die to bend the sheet metal part.
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V-dies are the most common type of press brake tooling and can be further subdivided into single V, double V and multi-V forms. Single V-dies are used for some regular angles and simple shapes. Double V dies are useful in situations that require symmetrical bending on both sides or a combination of angles. Multi-V dies are better suited for more complex and diversified bending tasks and can be used flexibly according to specific sheet metal processing requirements.
U-shaped dies are specially designed for U-bending and are indispensable in the manufacture of components such as U-shaped channels, U-shaped frames, etc. The unique shape of these dies is designed to allow precise bending. Their unique shape design can accurately shape the U-shaped structure, ensuring that the bent product is well shaped and conforms to the appropriate dimensions and accuracy standards.
Four-way mold is characterized by its four sides are set up with different sizes of grooves, this structure makes it unique advantages in the face of some special shapes or multi-angle bending tasks. It can use the grooves in all directions to achieve complex bending effects according to different processing needs, to meet the requirements of diversified product manufacturing.
Box-forming mold is mainly used for bending box-shaped parts, such as various types of metal packaging boxes, electrical enclosures. Through the mold’s precise bending effect, can be flat metal plate gradually transformed into a box-like structure with multiple surfaces. Ensure that the angle between the various surfaces is accurate, tight connection, for subsequent assembly processes to provide high-quality basic components.
Corrugated molds play an irreplaceable role in forming corrugated workpieces. When it is necessary to manufacture metal products with a corrugated appearance, such as decorative corrugated plates, corrugated radiators for heat dissipation, etc., it is necessary to rely on this type of mold to accurately shape the corrugations so that they not only conform to the design requirements in terms of appearance, but also maintain consistency in terms of corrugation dimensions, spacing, and so on.
Non-marking molds include ball bearing type, live plate type, polyurethane type, etc. Their common advantage is that they can avoid leaving obvious traces in the bending process. In some of the appearance of the higher requirements, the surface can not have defects in the bending of sheet metal, non-marking molds will be able to play a significant role. It ensures that the surface of the bent product is smooth and beautiful to meet the needs of high-quality processing.
When choosing a press brake mold, precision is one of the primary considerations. The manufacturing tolerance of the mold should be controlled within the range of 0.01mm, which is essential to achieve high detail accuracy of the bending operation. Only by achieving such a standard of accuracy can it be ensured that there will be no deformation of the plate, clip material and other problems during the bending process. This then enables the bent part to accurately meet the requirements of the design drawings, laying a good foundation for the subsequent production process.
Segmented tooling offers many advantages for bending operations. It allows the operator to flexibly achieve different lengths by combining pre-selected segmented tools of different widths. Segmented tools are safer and easier to handle for smaller bending tasks than monolithic tools. It can be better adapted to diverse production scenarios and complex processing requirements.
The clamping system of a quick-release tool needs to be strong and stable, and it must be able to hold a varying number of segmented tools securely until the locking system is fully tightened. Moreover, even when the clamping mechanism is open, the tool must remain securely in place without loosening or shifting. This feature ensures the reliability of the tool during changeover, adjustment, and use, increasing efficiency and reducing the risk of poorly secured tools.
Selecting a press brake tool with front-end loading (Rol2 type) significantly reduces tool setup time. In the past, it was often time-consuming and labor-intensive to load and unload tools by sliding them from the side of the press brake. With the front-end loading method, the operator can load the tool directly from the front of the machine, which saves a lot of time. Moreover, in most cases, this method also eliminates the need to use auxiliary equipment such as forklifts and cranes, further simplifying the operation process and improving productivity.
Standard height press brake molds have non-negligible advantages. When switching between different production operations, the use of standard-sized tools reduces the need for further adjustments to the machine. This allows the machine’s front cantilever, the height of the rear stop and the safety system to remain in their original positions. At the same time, the high degree of tooling uniformity ensures that subsequent additions of off-the-shelf ancillary components are perfectly matched to the existing tooling, guaranteeing the compatibility and stability of the entire production system.
Currently, there is a trend in bending operations to use air bending wherever possible, avoiding the need to close the mold and bending to the end, provided of course that the product’s processing requirements are met. It should be noted, however, that not all parts can be manufactured using the classic air bending technique. Therefore, in the selection of molds, according to the specific product characteristics and bending process requirements, reasonable judgment whether to use air bending and choose the type of molds to match.
When choosing a press brake tool, you must ensure that the tool is compatible with the material being processed. Using a tooling that is not designed for a specific material is likely to lead to poor bending results, such as inaccurate bending angles and damage to the plate surface. It will also accelerate tool wear and may even cause damage to the mold, increasing production costs and affecting production schedules.
Each press brake tool has its own specified tonnage limit, which is an important parameter to ensure the normal use of the tool and safe operation. Once in actual use beyond this limit, it is very easy to trigger deformation or damage to the mold. Not only will the current bending task can not be successfully completed, but also may need to spend additional time and cost to replace or repair the mold, bringing unnecessary losses to the enterprise.
Although cost is one of the important factors that enterprises need to consider when purchasing molds. However, if you only focus on price and ignore the specifications and performance of the mold itself, you will often lose more than you gain. Low-priced molds may have many deficiencies in quality, precision, and durability, which can lead to unsatisfactory bending results. Frequent need to replace the mold, in the long run, but will increase the overall production costs and reduce productivity.
Tools and press brakes must have a matching interface between the two, which is to ensure that the two can work together as a basic condition. If you use the interface is not compatible with the mold. Not only will the quality of bending greatly reduced, such as bending angle deviation, plate positioning problems. It may even cause damage to the machine or mold itself, seriously affecting the normal operation and service life of the equipment.
It is important that the tonnage of the machine and the tonnage of the mold should be compatible with each other. If a high tonnage mold is mounted on a low tonnage machine, the machine may fail due to overload. On the contrary, if the tonnage of the mold is too small, it will not be able to give full play to the performance of the machine and affect the production efficiency. Therefore, when selecting a mold, it is important to give full consideration to the carrying capacity of the machine to ensure that the two complement each other.
Regular calibration of the machine to ensure good alignment between it and the mold is a key link to ensure bending accuracy. If there is an uncalibrated deviation between the machine and the mold, inaccurate bending is likely to occur during the bending process. This results in a product that does not meet quality requirements. In addition, this misalignment will also exacerbate the wear and tear of the molds, shortening their service life and increasing the operating costs of the company.
The quality of the materials used in a mold has a direct impact on its price. Generally speaking, molds made from high-quality materials tend to be more expensive, such as those made from high-quality metals. They offer better wear resistance, strength and toughness, longer service life, and more consistent and reliable performance in the bending process. However, it is the cost of these high quality materials and the difficulty of processing them that makes these molds more expensive to produce, which is reflected in the selling price.
press brake tooling with advanced designs or customized for specific applications is usually priced accordingly. Some have special functions, more complex structure of the special mold, both in the R & D design phase, or in the manufacturing process, need to invest more manpower, material resources and time costs. Therefore, compared with ordinary standard molds, their prices will be more expensive, but it can often meet some special production needs, improve production efficiency and product quality.
In the market, those manufacturers who have established a good brand reputation, because their products have always been known for reliability and high quality, when selling press brake molds will often charge a relatively high price. Consumers pay more when purchasing molds from such brands, though. But they also usually get better quality products, better after-sales service and more reliable quality assurance. The brand factor plays a part in the price compared to some lesser-known manufacturers.
After-sales service is also an important factor affecting the final price of press brake molds. Quality after-sales service, such as providing a longer warranty period, timely customer service response and perfect after-sales maintenance, etc., all need to be invested by the manufacturer’s corresponding costs. Therefore, those mold products that can provide comprehensive after-sales service, its price will often include the value of this part of the service, making the overall price relatively high, but this also provides more protection and convenience for users in the process of use.
Before deciding to buy press brake molds, first of all, to clarify their specific production needs. For example, the type of material to be processed, the shape and size of the bending requirements, production batch size. Then, through a variety of channels to research the market to meet these needs of various types of mold products. For example, access to relevant industry information, read other users of the use of evaluation, to the same industry, such as enterprise consulting, a comprehensive understanding of the characteristics of different molds, performance and reputation, for the subsequent purchase decision to provide a sufficient basis.
Concerned about the price of the mold at the same time, not only limited to the initial purchase cost, but also focus on the long-term benefits. To consider the service life of the mold, the subsequent maintenance costs and the potential operational savings it may bring in the actual production process and other factors. For example, a slightly more expensive but durable and simple to maintain mold, in the long run, may be more cost-effective than inexpensive but frequent need to replace and repair the mold, more cost savings for the enterprise, improve productivity.
When communicating with mold suppliers, do not miss the opportunity to negotiate. Many suppliers for bulk purchases or long-term cooperation of loyal customers, often provide certain preferential policies or discount measures. In addition, you can also try to explore whether there are bundled sales and other more favorable purchase options. Through active negotiation and negotiation, you can strive to purchase the required mold products at a more reasonable price and achieve effective cost control.
If conditions permit, before formally purchasing the press brake mold, it is best to be able to carry out the actual test operation. By trying the mold, you can intuitively feel its accuracy, ease of operation, compatibility with their own equipment to meet the expected production requirements. Such testing can help companies avoid purchasing molds that do not meet actual needs, and ensure that the purchased molds can truly meet the needs of production operations, achieving the effect of value for money.
When operating the press brake mold, the operator must wear gloves, this is because the hands of oil, sweat and other impurities may be stained on the mold, which in turn causes damage to the mold, affecting its performance and service life.
After each use of the mold, it is necessary to carry out a thorough cleaning work. You can use a cleaning agent or isopropyl alcohol to carefully wipe the surface of the mold to remove residual metal particles, resin, and other substances that may cause wear and tear. Wipe with a soft cloth to avoid scratching the mold surface. In addition, it is essential to protect the mold periodically with an anti-rust spray, and abrasive pads can be used to remove scales or coatings left behind by materials such as mild steel or aluminum to keep the mold in good condition.
The environment and manner in which a mold is stored is critical to its preservation. Dies should be stored properly in cabinets made of metal or semi-solid materials, and each punch and die should be secured and isolated using foam or plastic to prevent them from bumping and rubbing against each other and becoming damaged during storage.
Wooden storage cabinets should be avoided as much as possible because wood tends to absorb moisture, which in turn may lead to corrosion of the dies. For ease of use, it is best to place the storage cabinet close to the press brake. If the molds need to be shared between multiple machines, then consider the option of a mobile cabinet that can be easily moved at any time.
Regular maintenance of the press brake mold is a key initiative to ensure its long-term stable use and maintain good performance. Through regular inspection, can be found as early as possible whether the mold surface wear, damage or deformation, etc., once the problem is found, you can take appropriate repair measures in a timely manner to avoid further deterioration of the problem, affecting the normal use of the mold and the quality of the bending product.
After the cleaning of the mold is completed, it is also necessary to properly lubricate the mold before storing it away. You can use the right amount of lubricant to gently wipe the mold surface. This can form a layer of protective film on the surface of the mold, effectively preventing its corrosion phenomenon. And to ensure that the mold in the next use can still maintain a good state, successfully complete the bending task.
In the process of using the press brake mold, always ensure that the mold is compatible with the parameters of the press brake. For example, the clamping method, maximum tonnage, working length and so on. Only to ensure this compatibility, in order to avoid the occurrence of damage to the mold or machine due to mismatch. This ensures that the entire bending process can be carried out efficiently and stably, giving full play to the performance advantages of the tooling and the machine.
In order to protect the press brake mold as well as to ensure the safety of the operation process, when the press brake is not in use, it should be parked in the bottom position of the slider, so that the weight of the slider falls on the pads, rather than on the mold, which can reduce the burden of the mold to withstand the pressure for a long time, to extend its service life.
Selecting the right press brake mold for the entire bending processing production is of great significance, it is not only about the quality and efficiency of the bending operation, but also closely linked to the control of production costs. From understanding the basic definition of the mold, type, to master the correct selection method, to avoid common selection errors, and then from the consideration of the cost of weighing a number of factors in order to achieve a wise investment. At the same time, proper maintenance and storage of molds can extend their life and guarantee performance. Following the key points in this comprehensive guide will help you select and use the right tooling for your bending operations to achieve your goals of high quality, efficient and economical production.
