In modern construction is impossible to imagine the work connected with reinforced concrete structures, metal reinforcement or creation of the foundation, without a convenient bending machines that can perform many useful functions.Hand-made sheet benders are simple enough tools that allow you to bend the sheet metal quality products even unqualified master.
- emergence of bending machines
- Purpose Bending machine
- Design Bending machine
- principle of operation of the machine
- Species Bending machine
- Fabrication Bending machine
- requirements and safety
emergence of plate-bendingmachine
first mechanical press brakes invented in the United States.Occurrence listogibov still takes its origin from the 19th century, when the industrial organizations of all kinds of industries there is a need of a wide release of metal structural parts.
Manufacturing of metal without the use of special equipment was extremely expensive and ti
But technical process does not stand still, and uncomfortable, heavy, consume a lot of energy and mechanical traumatic listogiby replaced by better operating properties in the hydraulic model.It happened in the second half of the 20th century, when the treatment began to be adjusted.And then off we go ...
scientists work in this environment has contributed to the automation of bending machines, the development of additional equipment and safety of employees.After 60 years of rolling machine it has become an integral part of the production.And today, even private master constantly wondering how to make listogib hands.
Purpose Bending machine
sheet bending machine is a pressing device that produces sheet metal bending whole or cut strips of a different thickness and shape.Homemade listogib able to bend the sheet to the desired angle, at the same time without disturbing the flatness.Bending machine used for processing sheets of brass, steel, aluminum and copper, and other metals with a thickness of up to 0.7-0.8 mm.
The absence of the sheet is folded at the deformation, which can not be achieved using traditional mallet and mandrel.This allows a sheet to make a variety of subjects.The products are made in such a way almost indistinguishable from those produced on industrial machines.
Availability bending beam silicone insert makes it possible bending of the painted sheets without damaging the coating.It also provides convenient features controlling the thickness of the sheets that have to be bent.Listogib bends easily sheets of iron and tin, accuracy and quality of the fold with the relatively high and meets all requirements.Many of these machines can simultaneously carry out cutting metal.
Bending equipment is widely used:
- in mechanical engineering - for the manufacture of car bodies and parts;
- in boat- and aircraft;
- in construction - finishing edges of roofs, production of roofing, ventilation shafts and air ducts in wind strips and moldings, door and window frames, cladding facades, production Skate timetable for the windows, as well as elements of metal siding and metal sheeting;
- electronics - for housings of personal computers, washing machines, refrigerators and microwave ovens;
- in the furniture industry - to create a non-closed and closed profiles, cones, boxes, cylinders.
sheet bending machine consists of a sheet of iron, which is the base, pressing, crimping punch mount, 2 clamps to attach the equipment to the bench worktop.Make listogib own hands from metal pieces.Experts recommend to buy Metal channel 6.5 - 8, which has a length of 500 - 650 mm, which keeps the entire structure listogiba.
listogiby often equipped with additional options: a device for holding the rolled metal, protractor, duplicating supports for the metal sheet and profiler.Sometimes listogiba manufacturing practice with enhanced support that provides secure attachment of the machine, and a special rotary cutter that can cut metal at the level of quality achieved in the factories.
Design Bending machine
sheet bending machine is mostly used for the production of metal sheets of the roof elements.The device listogiba Sheets can be refilled from the back and the front, which eliminates the need of pre-cutting.The design has a tool that allows you to cut metal directly on the site.
main elements of a self-made drawing listogiba for bending sheet metal are as follows:
- Roller knife.This tool is made of a very durable and high-quality alloy steel, the resource operation ranges 25 km polumillimetrovoy metal thickness.The knife can be sharpened after closure of the resource and a cycle done several times.Construction steel knife with grained powder is highly resistant to stress, weight up to 5 kilograms.
- back table.The board fits easily into a worksheet of metal that you can move in the desired direction to refuel for the job.Flexor and cutter material is installed on the table supports.
- Stand.Desk is placed on a wooden stand, so bending machine does not slip on the floor.You can adjust the height of the stand, and the machine is able to move on wheels just what is convenient for regular service.
- front stop.These elements make it possible to set the width of the cut, and their structure can be rotated 180 degrees and then return to the first position.
- measuring plate and angle bending stress.Emphasis is able to quickly set the desired angle of the sheet, or to carry out the process of bending without fixing an arbitrary angle.
The principle of machine homemade
Hand sheet bender is intended for the manufacture of specialized parts from sheet steel, aluminum and copper thickness of 0.5-0.7 mm, a width of up to 2500 millimeters, with a height of 20 mm shelves, cutting the bandsof the sheet 80 to 400 millimeters for folding folded flange to impart additional product stiffness.
The principle of bending machines is based on the fixation of the workpiece on the table listogiba via clamping frame and bend further rotary beam to the desired angle of the protruding portion of the workpiece.Maximum bend angle reaches 135 degrees, the possibility dogiba to 180 degrees.From pressing the power mechanism depends on the marginal thickness of metal that is served.
Clamp is made in a mechanical mode using eccentric screed.You can adjust the clamping force.The simple design of bending machines and the materials used are able to function reliably and high reliability, and maintainability in harsh conditions - even in the field.Design feature is the possibility of unlimited feeding blanks to length.
sale there are special tools, drawings listogibov of this type have some distinctive features.Clamp preform may be performed by an electromagnet, which is arranged in the housing unit.Power electromagnet capable of providing nip eliminates slipping from under the presser jig blank.
Increased stiffness above construction shows straightness and a high quality of bending.The length and angle of bending pieces are fixed or specified using constraints to create identical or similar parts.
Also in the range are proposed bending presses, the deformation of workpieces where it is committed because of indentation in the recess of the punch projection matrix.The force provided by hydraulic or pneumatic.Such sheet bending equipment designed for bending sheet metal having a thickness up to 3 mm over a length of up to 2500 millimeters.
Species Bending machine Bending
mobility equipment is divided into mobile and stationary.The first types of machines used in the production for processing a large volume of material, machines second - on small construction sites or factories for the manufacture of individual parts.
depending on the method of processing the material, bending machines are turning, bending blade equipped, pressing with a punch and die, rotary - listogibov schemes provide for a roll.
By type actuator bending machines are divided into 5 types:
- Pneumatic machines work by pneumatic operation, mainly in the sale are turning model.
- Electromechanical machines are stationary machinery equipped with the drive system, the motor and gearbox.
- Mechanical machines are stationary machines which operate thanks to the energy of the flywheel.
- Hydraulic machines are capable of acting by hydraulic cylinders.
- Hand tools for their operation require muscular strength of workers and are very convenient for quick transportation and work in the field of manufacture of products.
When selecting Bending machine or manufacture their own hands listogiba necessary to determine the thickness of the sheet metal, because the optimal solution for the treatment of a material that has a thickness of less than 0.1 centimeters is considered a manual machine.
This unit is capable of providing the required accuracy and release the owners of large attachments.If items requiring different from a metal that has a thickness greater than 1 centimeter, it is best to choose the industrial model electromotive capabilities and perform a wide range of functions.Such machines cost a lot more, they occupy a large area, but exhibit high performance.
Making Bending machine
sheet bending machine in practice Homebrew - is less common device.However, this tool is very useful because it allows even unskilled masters quality work associated with the flexible sheet metal.
sheet bending machine, consisting of a base crimp punch with lever clamp and two clamps can be made in the presence of welding.Only needed undeformed corners number 3 and 5, as well as the segment sill.Base made to produce the number of channel 6.5 or 8, which has a length of up to 500 millimeters.Size made to choose to.
Made from the corner clamp is capable of bending the sheet at an angle that is greater than 90 degrees, for example, you need to connect to fold sheets.Clamp made with their own hands hand listogiba different welded construction.The main area 5 is necessary to further strengthen the profile of the corner of the room 3.
clamp to get tough, it is recommended to use the corners, shelves thickness of which is 5 millimeters.Clamp make shorter base 70 millimeters, its ends to the brackets should be welded corner number of segments 3 with the wall thickness reaches 5 mm.
corner edges of the shelves, which are in contact with the flexible sheet is treated with a file or milled to make them parallel to the base.In every corner of the bracket, the middle shelf is necessary to drill a hole with a diameter of 8 mm.
follow crimp punch from a corner room 5, it is 10 mm shorter than the clamping.Lever arch made from the reinforcing steel bar that has a diameter of 15 millimeters and a bracket welded to the punch.Then saw out of steel sheet with a thickness of 5 millimeters, cheeks and drill them in the hole with a diameter of 10 millimeters.
Remove the rib ends corner-punch chamfer whose length and depth of 30 5 millimeters, which are needed for mounting and installation of the steel rod axes that different diameter of 10 millimeters.Axles must be welded in such a way as shown in the video of listogibov own hands to the center line of the bar directed parallel to the edge corner.On the edge of the base, remove the chamfer that have a depth of 6 and 32 mm length.
base and punch for pre-assembly is necessary to fix the plumbing in the vice so that the shelf brackets and channels were placed in the same horizontal plane.Put on the axis of the punch cheeks and grab them at several points to the base is secured by electric welding or other method.
on this surface for trial bending decided to put a sheet of soft metal that has a thickness of 1 millimeter close and fix the top clamp, pulling him temporarily to the base pins with pads or clamps.The position relative to the substrate cheeks are advised to check through the test is flexible and adjust if need.Convinced of the optimum position cheeks, they must be welded permanently to the ground.
When using the holes in the bracket clamp of drill diameter of 8 mm at the base and cut the thread M10 in them.The holes should be drilled in the nip to a diameter of 10 millimeters.At the base of the screw holes in the bottom screw bolts, the heads of which should be fixed on the basis of welding.
Tighten the clamp bolts to the bottom of the M10, under their heads fit washer.Use nuts desirable handwheels that will remove the plumbing.When unscrewing the nuts protracted forced off clamp provides spring that put on the bolts.You can apply and rubber shock absorbers.
clamps for fastening bending machines to the base are homemade, cooked from the corner of a room 3. clamp design is quite clear from the drawing listogiba hands.Clamping screws M10 are equipped with supporting plates.Clamps should be welded to the base shelf near the cheeks.
requirements and safety
Different types of bending machines are designed for different purposes, but they must meet the requirements indicated below: ease of operation, safety, minimum energopotreblyaemost, stability, good quality component parts, the possibility of replacing elements in case of failure,their compliance with the required standards.
To prevent work-related injuries, it is strongly recommended that you read the safety precautions.Section rolling machine is a dangerous device, because it contains a lot of piercing and cutting elements that pose a threat to life and limb of the operator.Immediately before the operation necessary to examine in detail the instructions for each device.Work with listogibov sought solely in protective clothing.
Before each run the device should be carefully inspect health equipment.It is forbidden to bend the sheet metal above the allowable thickness and leave the bending machine unattended.
Thus, the bending machine in the right hands is capable of providing high quality manufacturing parts such as housings, chassis, cabinets, and when connecting the machine will need to fold sheets, ensuring that proper marketable product.The main thing to know is how to make listogib correctly.This ensures the absence of deformations and the flatness of the sheets are folded in.