About
About Us
Bending Machine
The bending series is the main item of our company. In addition to the common twist axis bending machines and high-grade electro-hydraulic bending machines, we also have more energy-saving oil-electric hybrid bending machines, super large double machine linkage bending machines and so on. Regardless of the type of bending machine, as long as HARSLE production are the whole machine using steel plate welding structure, ANSYS stress analysis software to ensure the stability and accuracy of the machine. Stable body construction, different tooling options and the highest safety standards guarantee the high quality of the bending machines.
Why Choose HARSLE
Choosing HARSLE means choosing good machine, good quality and good service.
Development History
2006
Established Nanjing HARSLE Machine Tool Co.,Ltd., engaged in the production, sales and maintenance of sheet metal machinery such as bending machines, shearing machines, punching machines, and hydraulic presses.
2009
Provide customers with a complete set of machines for metal door processing, metal sink processing and other production lines, and have signed cooperation agreements with overseas agents to provide our customers with better services.
2013
The annual sales of both domestic and foreign trade have exceeded 10 million dollars. More and more customers trust us and to work with us, and we have also provided them with the most suitable products. With strong export volume and excellent customer feedback, it was selected as a certified supplier by Made-in-China.com.
2017
Our company's main products: press brake, shearing machine and hydraulic press have obtained the utility model patent certificate certified by the State Intellectual Property Office. In the following years, the CNC press brake produced by our independent company obtained the appearance design patent certificate certified by the State Intellectual Property Office.
2019
The press brake and hydraulic presses produced by HARSLE have obtained CE certification. We Participated in the 6th India BLECH Exhibition in the same year and attracted many overseas customers to place orders on the spot with high-quality machines and professional explanations.
2020
The punching machine and shearing machine produced by our company have successively obtained CE certification. In the same year, the company participated in the Dubai exhibition and passed the ISO9001:2015 quality system certification.
Fabrication Equipment
HARSLE has both experienced senior engineers and innovative young engineers, all of them are committed to building better machines.
Our Services
HARSLE CE Certificate
In line with EU CE standards, the quality of the machine is guaranteed
SHOW OUR COMPANY'S MEMBERS
Our Team
HARSLE sales are experienced and friendly, so feel free to contact us when you have question about the machine
Voice From Customers
Here's what customers around the world say about our press brakes.
We have an excellent after-sales technical team, which can be served according to customers requirements.
Frequently Asked Questions
If you have more questions, please click the button below to view.
What is a press brake?
Unlike the hydramechanical press brake that converted the hydraulic energy to mechanical energy with a hydraulic motor fixed to an eccentric shaft, the modern hydraulic press brake uses a hydraulic pump and hydraulic cylinders to mover the ram. This design is far more efficient, allowing increased speed and accuracy.
The modern hydraulic press brake can be divided into two basic subgroups , up-acting and down-acting(all other types of press brakes are down-acting only.)
The French designed and were first to use, the up-acting style of press brake. In our opinion, up-acting is the best type of press brake, not only because of the ram’s guidance and arrangement of rollers, but also because of its natural antideflection characteristics. On this machine you have gravity on your side, working with you instead of against you.
For any mechanical device to have movement, it must have some clearance built in to allow the mechanism to function freely. On the press brake, an important clearance lies between the power source and the ram body. The clearance is just right when the machine is new or rebuilt. However, with age and use this clearance will increase (sometimes dramatically), causing an ever-increasing amount of play in the mechanism. When the press is a down-acting, this excess clearance, or “play” is located on the bottom when no load is present. When a load is applied, such as when a piece of material is formed, this error moves to the toe of the connection. This hurts the ram’s repeatability, often leading to vast swings in bend angle from one workpiece to the next, the up-action press brake, on the other hand, always keeps this play on the bottom, whether under pressure or not.
Down-acting hydraulic press brakes represents 90% of all press brakes in use today. Of all the down-acting press brakes, the hydraulic is, by far, the most accurate, these machines are controller by a CNC or DNC controller (computer numerical control or direct numerical control). The computers, in turn, control a proportional valve system. This system allows for ram control in the downward direction, which, in turn, gives accurate bend angle control.
What is a press brake used for?
The press brake machine is widely used for the steel sheet metal processing, mostly they will be used in the following fields:
Decoration industry
The CNC press brake machine will be used for bending the stainless-steel elevator, steel door and frame, steel windows and skirting line. Sometimes we will use the CNC V grooving machine after bending to get the perfect bending angles.
Electric industry
The press brake plays an important role in the production of electric cabinet. After the steel sheet cut by the shearing machine, we will use the press brake machine to bend them into different size of the cabinet by different types of the punch and die. The segmented tooling is also the necessary part during the production, especially for the left and right horns of the punch, it is vital to form the box in the final stage.
Kitchen industry
Most of the kitchen devices are made of stainless steel, we need to use the press brake to bend them into different shapes before the final product is finished. Mostly we will use the CNC Press brake with different punch and die, like gooseneck punch and 2V die by segments. We can also use this machine to make the HVAC and other related products.
Automobile and ship industry
In this field, large capacity press brake and CNC press brake will be widely used and it as higher requirement for the bending accuracy and efficiency. HARSLE is one of the press brake manufacturers in China who is capable to produce such machines and offer good service for customers from all over the world.
Aerospace industry
High precision is generally required in this industry, because the product which produced by CNC Press brake is the key part for the final product and the bending tolerance should be within the acceptable range. HARSLE has many customers in this field and they are all satisfied with our press brake.
How does a press brake work?
The bending proceed is executed by the punch and die, the upper punch is installed on the ram and the bottom die is anchored on the table. When the punch moves together with the ram up and down, the sheet will be bent into different angles or shapes. There are three different types of bending methods used in forming sheet metal: coining, bottom bending, and air forming. Each has a specific purpose and application.
Coining
Coining was probably the first bending method practiced in the sheet metal trade. The process requires an amount of tonnage so great that the material being formed actually flows. This flowing goes out from the coined segment to that part of the workpiece not under pressure. If the bend radius is sharp (less than 63% of the material thickness), the punch tip can actually penetrate into or past the neutral axis of the bend. There the yield of the material is broken. With this penetration of the neutral axis by the punch tip, the springback almost disappears, and material remains permanently deformed at the point where the pressure was released.
Bottom Bending
There are many similarities between coining and bottom bending. With coining, however, the entire surface of the material comes into contact with the tooling, which is stamped so severely that the material actually flows, with bottom bending, on the other hand, only the radius is stamped into the material. Springback is the characteristic of most materials to try to return to the flat position after forming. The angular tooling clearance should be equal to the springback. As pressure is applied to the radius, the material passes by the required angle and up to a total equal to the required angle and the springback; then it is forced back to the required bend angle.
Air forming
Air forming is a three-point bending operation. The three points are the punch tip and both top corners of the die, Air forming uses the penetration of the punch tip into the die space as the determining factor in achieving the required bend angle. Because its tonnages are greatly reduced from those required for coining or bottoming, air forming is fast becoming the method of choice by most manufacturers. Wear and tear on the press brake and tooling is greatly reduced, leading to a marked increase in equipment longevity.
Each of there foregoing styles of metal forming has a purpose. Each is capable, within its limitations , of producing an excellent product, it takes the practiced eye of the journeyman to know why and when specific techniques should be used.
How much does a press brake cost?
The press brake price depends on the machine capacity, configurations, optional devices, degree of automation, axis quantity, controller difference, etc. Here we will give you a brief introduction about how much does the HARSLE press brake cost:
Econom press brake
This is the most economic press brake among HARSLE Product. This is widely accepted by startup and new operators. Actually, its price starts from USD3,500, when the bending capacity and bending length is more, the price will increase accordingly. This type of press brake is equipped with X any Y axis and its operation will be much easier than other high-level machines. HARSLE will use E21 controller as the standard for the cheapest level, customer can also upgrade it into DELEM DA-41S, TP10S, CT8 controllers, compared with E21, these controllers can program the bending angle for fast bending purpose, but they are all torsion-bar structure.
Smart press brake
This is the second level in HARSLE press brake. It will be upgraded from torsion-bar structure into electro-hydraulic type. The controller will be smarter and more functional. There will be two proportional valves on the top of two cylinders and two linear scales on each side of the machine vertical plate. The linear encoder can detect the distance between cylinder and the table for each side and give the feedback to CNC controller, when the controller gets the signal, it will send the signal to the proportional valve to control the movement of the cylinder. They will be a closed-loop system.
When we talk about the press brake, we will also think more about the back-gauge axis. The press brake price varies by the quantity of the axis. Actually, if you want to add one more axis, the price will be USD2,000-USD2,500 more. The smart press brake can support Maximum 4+1 axis and X+R axis for the back gauge.
For the controller, mostly we will recommend DA-52S, DA53T, DA-58T from DELEM or CT 8PS, CT12 from CYBELEC or S530, S630 from ESA.
Genius press brake
This is the highest level in HARSLE press brake, this will be chosen by most of professional companies or the customers who have high requirement on the fabrication process, like aerospace industry and automobile industry. The axis will be upgraded into like 6+1 axis or 8+1 axis and the controller will support 3D simulation or 3D programming, it will largely optimize the bending process, the offline software will be the helpful tool to boost the productivity and this software will be for free. Actually Genius press brake price will be 1.5 times higher than smart press brake, but if customer will choose other configurations, the price will increase accordingly.
What is the difference between NC and CNC press brakes?
Structure
The design principle for both machines is different, it results in the different synchronous structures on both sides of the ram.
Accuracy
The ram parallelism will affect the workpiece accuracy. The NC Press brake synchronization is kept mechanically and it has no real time feedback for the error, what is more, it can not adjust by itself and will cause the low bending accuracy.
Working speed
For the press brake, we are always talking about three speeds: Down speed, working speed and return speed.
Mechanic rigidity
Because of its design, NC press brake can not bend by partial load. If it is working like this for long time, the torsion-bar will deform easily.
Crowning system
For most NC press brakes, it will not come with the crowning system as standard. The operator needs to adjust the bending angle manually before bending the official product. It will take a long time and waste material; it will also be difficult to make the product in a very precise way.
Which brand of press brake is best?
With the development of the economy, the development of industrial processing technology is very rapid. Under these circumstances, people's demand for the industry will be assisted by a large number of mechanical equipment. Bending machine plays an important role in the manufacturing process of modern mechanical equipment. In the current market, manufacturers of high-quality bending machines have emerged one after another. So how to make the right choice among many bending machine brands?
HARSLE is located in special economic zones of the ancient capital in Nanjing. Their company has a number of better educated, younger workers who devote themselves to developing and designing sheet metal processing machines, production department applies CAD, CAPP, PDM and other CAD software to the field of product upgrading, which enables the team has the strong designing capability, adopt advanced international management mode and introduce German machinery technology. That is the reason why our product quality moves to a higher level constantly.
Aliko Oy Ltd provides its customers with added value via its advanced comprehensive solutions for machining heavy materials. Decades of experience in product development and machine manufacturing provide a unique insight into what product solution is right for the customer’s production process.
Amada Co., Ltd. is a large multinational company specializing in the production of sheet metal processing machinery. From the aspects of market scale, product structure, product technical performance and comprehensive operation and management system, it has gradually formed a group listed company integrating product development, design, manufacturing, education and training, after-sales service and marketing network.
TRUMPF mission is to further develop and digitally connect production technology, to make it even more efficient, precise, and future-proof. In doing so, they want to make manufacturing and its upstream and downstream processes more efficient. This is how we build the industrial world of tomorrow. They are market and technology leaders in machine tools and lasers for industrial manufacturing, and work with our innovations in almost every sector. Their software solutions pave the way to the Smart Factory, allowing them to implement high-tech processes in industrial electronics.
How do you run a press brake?
According to industrial requirements, the bending machine can bend some very hard and thin plates to make them in a bent state, with good bending effect and no rebound. And it is suitable for almost all types of thin plates. It will not break the plate while maintaining performance, and it is safe to use. However, from their structural analysis, the operation of the equipment is very particular, so how does the user operate and use it?
The first is to turn on the power, turn on the key switch on the control panel, and then press the oil pump to start, so that you can hear the sound of the oil pump turning. The machine does not work at this time.
Stroke adjustment, the use of the bending machine must pay attention to adjusting the stroke, and be sure to test the car before bending. When the upper die goes down to the bottom, there must be a gap of plate thickness. Otherwise, it will cause damage to the mold and the machine. The adjustment of the stroke also has electric quick adjustment and manual gastric adjustment.
For the selection of the bending notch, it is generally necessary to select a notch with a width of 8 times the thickness of the plate. For bending 4mm sheet, you need to choose a notch of about 32.
The rear gauge adjustment generally has electric quick adjustment and manual fine adjustment, the method is the same as that of the shearing machine.
Step on the foot switch to start bending, you can release it at any time, when you release the foot, the bending machine stops and continues to descend.
What factors should I consider when purchasing a press brake?
A press brake is a simple machine with a lot of accessories that can connect to it. There are a number of things that you should consider when you want to purchase a press brake.
Length
Tonnage
Throat
Gauge
Energy Consumption
Angle Controls
and so forth.
The maximum length of the piece that you are using and keep the length of the machine depending on that. The tonnage (bending capacity) depends on the type of material that you are using, so, make sure that you try to fix the tonnage with a tonnage calculator or some other tool.
Exhibition Style
Since the company was founded, HARSLE has participated in various national and international exhibitions every year
