“From the master class presented by the author, you will learn how you can make a cutting machine yourself with a 3-phase motor and a bunch of scrap metal. Every self-respecting master is simply obliged to have an angle grinder in his workshop, but long work With the help of an angle grinder, back problems begin, because when processing and sawing metal you have to bend over, which is not very professional. Many people today convert grinders into cutting machines, which greatly increases labor productivity. But our author went even further and created the machine absolutely from scratch, having a 3-phase motor still made in the Soviet Union and metal in the form of an angle, a pipe and a sheet. A table was also welded from a corner, and its thickness is 5 mm.
It is quite convenient to work with such a machine; you no longer have to bend your back over the metal, but simply place the workpiece on the table, clamp it with a yew and lower the sawing part. With a powerful engine installed at 1500 rpm, metal cuts like butter.
So, let's look at what exactly the author will need to assemble the machine?
Materials
- 3 phase motor 1500 rpm
- corner
- professional square pipe
- dye
- bearings
- screw
- spring
- cutting disc
- sheet metal 2 and 5 mm
- pipe
- plywood
- automatic shutdown
- belt
Tools
- lathe
- Bulgarian
- welding machine
- drill
- hammer
- file
- calipers
- set of wrenches
The process of creating a cutting machine
And so, first of all, the author begins to grind the spindle onto lathe, it is sharpened for 306 bearings and has a diameter of 30 mm. On the one side seat under the pulley, and on the other, respectively, for installing the cutting wheel and the thread for its fastening.
Scheme and drawings.
2 pieces are cut from the pipe - these will be the seating rings for the bearings. 
The bearing is inserted into the ring and placed on the spindle. 
After that, another piece of pipe is cut, it will connect 2 landing rings. 
It grabs at the edges, the main thing is not to weld the bearing itself))) 
As already mentioned, a pulley is attached to one side. 
And on the other side there will be a cutting disc installed. 
After that, a machine frame is made with holes made for adjusting and tensioning the belt. 
Fitting and installation of an electric motor. 
Next, the craftsman works on making a protective casing for the cutting disc. 
What is 2 mm metal and corner used for? 
The corner of the casing is welded to the machine frame. 
The hinge is made from 2 pipes of different diameters by inserting one into the other. 
A table was welded from a corner and a 5 mm sheet of metal. 
A hinge is welded to the tabletop. 
The master makes the handle from professional pipe and steel rod. 
This is what happens. 
To secure the workpiece, a vice is needed and it will be made from a water valve. 
One corner remains stationary, and the second moves and clamps the workpiece. 
A cover is also made to protect the belt. 
Installed. 
The machine is connected. 
Spark protection 
Plywood shelves have been added to the bottom of the table. 
Painting. 
And this is what the machine looks like when completed. 
Our master has such a wonderful and powerful cutting machine; now he can work calmly and without straining his back for a longer time, and this increases productivity and income accordingly. Assembled machine made from scrap metal, it looks almost worse than the factory analogue, and most importantly, you will get such a miracle machine almost free of charge (if you have the necessary components and spare parts) If you liked the material, then we invite you to join our group
The grinder is a very useful and versatile tool. With its help you can cut metal, stone, tiles and, of course, grind surfaces, but sometimes it is much easier and more accurate to perform these works stationary machine. Fortunately, you can make a cutting machine from a grinder with your own hands.
Pros and cons of a homemade machine
If you have to hold an angle grinder in your hands quite often, you have probably already experienced its disadvantages. Weak spots instrument in its main advantage - mobility.
Firstly, it is not always possible to secure parts during cutting, and the slightest vibration can lead to destruction of the abrasive disc, which, in turn, can lead to serious injuries.
Secondly, with a mobile version of the tool it is quite difficult to control the precise perpendicularity of the cut, take into account the thickness of the disk in relation to the mark and the material being cut, and even hold it if necessary.
Thirdly, it is quite difficult to cut several parts with a tool same sizes, especially when we are talking about twigs and small pipes - after cutting you also have to trim the parts.
And, of course, keeping both hands busy and extremely tiring concentration when working, since an angle grinder is one of the most dangerous tools. Just look at the kickback – the sudden kickback of the tool when the rotating abrasive disc gets jammed in the workpiece. The danger of a kickback lies not so much in the throwing of the tool, but in the concomitant destruction of the circle. At such high speeds, abrasive fragments can seriously injure the operator.
The kickback occurs especially often when a cut is completed, when only a small bridge connects the parts. In this case, it is recommended to stop the tool without cutting the workpiece to the end, remove the circle and cut the part with reverse side. Cutting machine, which can be constructed from available materials, is able to solve all of the above problems and provide additional security.
Photo gallery: DIY tool
Should I buy or not?
Finding a ready-made machine on store shelves that at first glance satisfies your needs is enough simple task. But it is unlikely that there will be a design made entirely in accordance with your requirements, and they are different for everyone. In such cases, owners of machine tools try to improve or remodel them, but are faced with very serious obstacles - either the manufacturers made the machine from alloys that are very difficult to work with by welding, or they did not take into account the little things that you need specifically - for example, an accurate ruler or a more elastic spring. Remaking someone else's is much more difficult than making your own.
Simplest homemade machine for a small grinder can be done at a minimum of cost and in just a few hours.
From metal pipe and corners
The finished design of such a machine will be a long metal pipe that serves as both a frame and a handle. Closer to one end, a transverse metal strip with two holes for fastening the grinder is welded.
The pipe in this design is both a handle and a fastening
On the same side, the pipe is attached to one side of a small piece of angle on a movable shaft, while the other side of the angle itself is attached either to the work table, or simply to the floor in the workroom. On the opposite side of the fastening, it is necessary to fix a spring, which will allow the entire structure to return to its original position. That's all - the machine is ready, you just need to secure the angle grinder correctly. Of course, this option is for the most simple work with metal, and for complex ones, where precision is required, the structure should be more stable and solid.
Video: cutting machine from scrap materials
Cutting machine with bed (drawing)
Required tools and materials
To make a cutting machine you will need following materials and tools: steel angle, profile pipe, metal sheet for the platform (or more easy option made of chipboard), a welding machine, a channel, a drill, a shaft, several identical bearings, a small diameter pipe, a spring, as well as a relay and pedal. Welding, if you think about it, can be replaced with strong bolts, that's why you need a drill. By the way, this option will also allow you to disassemble the machine if necessary.
Drawing
The manufacture of the machine should begin with cutting parts onto the frame. To prevent damage expensive material, carefully study the numerous drawings that can be found on the Internet or follow the models on the shelves. In the latter case, draw up the drawing yourself, you don’t need any special skills for this - the main thing is to present it on paper finished design and its proportions. Each grinder needs its own drawing, because the tools are from different manufacturers may differ radically - in some places you can remove the handle, in others you will have to come up with a stand for the entire grinder! Plus, under different sizes The disk needs a different frame. Below are several diagrams.
Photo gallery: diagrams of cutting machines made from grinders for metal and tiles
Frame
The simplest frame consists of two frames on common axis. The lower frame should be fixed to a platform - metal or chipboard. If the grinder is large, it is better to use metal. The upper frame, to which the angle grinder is screwed, should rotate vertically relative to the lower one, like a pendulum. A spring is needed to fix the original position. A fastening is welded to the lower frame, which consists of a clamping angle and a movable clamp.
The frame of the bed can be made of metal
Ruler
It is very important to provide measuring parts in the machine, thanks to which you can cut workpieces with an accuracy of up to 1 mm. IN in this case A movable ruler with a limiter welded to the tube is best suited. Having exposed with her help Exact size and secured with the end screw, you can get to work.
Electronics
For ease of operation, provide in the design a starting pedal or button with switching through a low-voltage 12 V relay. Through it, voltage will be supplied to the angle grinder. With the help of such a simple design, we free up our hands, achieve an accurate, even cut without using a vice, and also save time on accurate measurements. This tool will replace cutting saw on metal, and if necessary, you can always return the angle grinder to its mobile state.
Video: metal frame for an angle grinder
Video: homemade machine with a ruler for metal
Safety
When working with an angle grinder, stationary or manual, you should always remember safety. In the case of stationary option you need to consider the direction of the tool and the position of the protective guard - it is important that the guard completely hides the area in which the operator is located. If you have a machine, you will probably have a desire to use the tool for other purposes than for its intended purpose - for example, attach a saw blade for wood to an angle grinder, which is absolutely forbidden to do!
Wood is a heterogeneous material; it may contain knots or even nails. The rotation speed of the grinder significantly exceeds the set speed of a standard sawmill, which will very quickly lead to saw blade into disrepair.
But, besides this, unlike abrasive and grinding discs, saws have sharp teeth that pose a high danger. Risking your health for a quick cut is simply unreasonable. After installing the tool and the new disk, the operation of the grinder should be checked for at least 1 minute at idle speed - the circle should rotate completely freely, without excessive vibration, without touching the casing.
It’s not that difficult to make a cutting machine from a grinder yourself. And in the future, this tool will help you save time and effort.
Nowadays, there are a huge variety of different tools for cutting metal. Many of them are manual and have a large number of inconveniences. The rest of the instrumentation is considered automated and has large dimensions or a large price category.
To combine business with pleasure, as well as convenience and price range, craftsmen created a disc cutting machine. Below we will look at everything related to this equipment.
The scope of application of this machine equipment extends to industrial applications and domestic use. Used for cutting various types metal (steel, cast iron, copper, aluminum, etc.).
Since in everyday life there are a huge number of different metal objects that require minor repairs, this machine becomes extremely necessary. After all, lowering the cutter stand with the cutting disk once will be easier and faster than manually sawing with a hacksaw.
Dimensions homemade equipment allow you to place it under a canopy, in summer time, and in winter it can be safely placed in a warm garage or workshop.
Tip: It is extremely important to choose a smooth and solid place to install the bed ( concrete slab, thick corners, or concrete support legs bed). This is done in order to reduce the possibility of vibration to a minimum during operation.
Mainly used in production automated systems, which are controlled by the operator via CNC. The goal is mass production of metal products, in the form of cutting pipes of given sizes and various sections, flat rolled metal and much more.
Below we will look at the criteria by which this machine equipment is distinguished.
Classification of cutting machines
All cutting machines are distinguished according to a huge number of criteria. We'll look at the most important ones. So, the main technological criteria:
By type of toolkit
The separation occurs directly on the tool that cuts the metal products. In turn, they are divided into the following subspecies:
Band saws
In this case it is used band-saw with teeth. The belt is made from high-quality high-speed steel. Due to the fact that the cutting tape is thin, there is a saving in material consumption due to the thin cut. Band machines are used in production.
Hacksaws
They are used in small industries, as well as in everyday life. Hacksaw tools can be hand-held (the well-known hacksaw for metal) or an electromechanical machine. In this case, hacksaw blade made from various metals (high speed steel, carbon steel, alloy steel, bimetallic steel). This type is quite easy to operate and is considered a convenient tool.
Disc machines
Belongs to the category indispensable tools. Used throughout the metalworking industry. Using such equipment, high-quality cutting of metal can be carried out even by an unqualified person. In addition to industry, this machine equipment is widely used in everyday life.
By number of cutting edges
Single head
The design has one cutting disc. This type of machine is low-productive of its kind and is capable of performing only one operation.
Double head
Their design uses two “heads” for attaching disks. In this case, one “head” is firmly fixed and motionless. The second has the ability to move in independence in the first. This equipment is considered a high-performance tool.
By type of saw blade feed
Front saw blade feed
The center of the disk moves in a horizontal plane.
Bottom feed
The center of the disk moves from bottom to top along a vertical plane.
Pendulum feed
Center cutting disc carries out a movement similar to an arc, from top to bottom.
Vertical feed
The center of the disk moves along a horizontal plane from top to bottom.
By main type
Cut-off saws
This tool is used to cut dimensional pieces of rolled metal. Well suited for small-scale production.
Abrasive - cutting
When working with such equipment, use abrasive wheels. High-quality cutting of metal residues (burrs) is carried out. Cutting material into blanks, cutting profile metal for required angle from 0 to 45 degrees.
Correctly-cutting
Such equipment processes metal produced and supplied on coils (reinforcing steel, metal strip, wire, rods with profile section). This equipment is equipped with the correct mechanism and automatic unwinding of metal from the reel. The twisted wire enters this mechanism, is straightened over the entire plane and fed into a special receiver for further processing.
Tip: Depending on the material to be cut, you need to select suitable cutting discs. The discs must meet the technical specifications.
Disc machine device
Frame
Or metal structure, playing the role of the base of the unit.
Pendulum unit
This is a kind of metal part made of a metal profile, which looks like the letter “T”. The movable side is mounted on a bracket located on the frame. The movement of the pendulum is carried out by means of bearings, and the return to its original position is carried out by a flexible part (a strong harness or a small spring).
Pipe clamp
The so-called vice, mounted on the bed. They allow you to press the workpiece to give it a stationary position.
Pendulum unit axis
This axis is used to move the disk.
Electrical engine
The heart of the unit. It is he who puts the whole mechanism into action. An asynchronous motor is used for this equipment.
Actuator
A box containing electronics that is connected to electrical network. On this box there are buttons to turn it on and off.
Wheel protective cover
Steel protection that prevents fragments from the disk from falling directly into the person working on the unit.
Belt guard
Located where the belt makes its movement. This casing is designed to protect a working person from being hit by a belt if it breaks.
Pendulum assembly handle
That part with the help of which pressure is exerted by the cutting disk on the workpiece.
Ground bolt
As with all machines, there is a bolt on the body of the unit that is used for grounding.
Abrasive wheel
Direct cutting disc consisting of various materials.
Sling brackets
(4 units)
bed
This is the area where the main unit of the unit is located.
Adjustable stop
Due to it, it is fixed right size future product.
Tip: If your budget is quite modest, then you can use scrap materials to create parts of the unit. If your budget allows, then it is advisable to purchase all the components in the store. This will improve performance and service life.
Manufacturing of a disc cutting machine
Any invention will require certain parts, whether purchased elements or homemade parts. To create a cut-off brainchild you will need the following:
- Metal corner with dimensions No. 24.
- Metal channel No. 10.
- Movable shaft.
- Tubes for making a handle.
- Welding machine.
- Bearings for the pendulum mechanism.
- Electric drive.
- Box for storing electronics.
- On/off toggle switch.
- Starting circuit.
- Winding.
- Electric drill.
- Fastening elements (bolts, screws).
Let's look at the progress of assembling all the equipment:
- First of all, with a grinder, blanks are cut into a frame with dimensions of 400x600x1200 mm.
- Using welding, the frame is assembled from prepared parts.
- A channel is welded over the entire frame. It will give additional strength to the machine and serve as a guide.
- Several vertical supports are screwed onto the channel.
- Next, the next frame is installed, on which the engine and shaft will be located. The frame dimensions should be 400x600 mm.
- A plate intended for the engine is attached to the frame. The best electric motor for these purposes is an asynchronous motor. Its power should be from 1.5 to 3 kW. After installing the engine, it is necessary to connect it to a three-phase network.
- The shaft, flanges, supports with a pulley are made on a lathe.
- Next, the bearings and pulley are installed.
- The box in which the circuit is located is installed in the lower part of the frame.
- A shaft with a sleeve is inserted between the vertical supports. Shaft diameter 12 mm. The gap between the bushing and the shaft should be kept to a minimum.
- On both sides of the bushing, limiters made from pieces of channel are welded.
- An electric motor and a cutting mechanism are installed on a long support beam and on pieces of channel.
- The final step is to install the belt that connects the shaft and the motor.
Based on the above assembly steps, we can conclude that it will be much cheaper to assemble such a unit with your own hands. Moreover, during the assembly process, you yourself adjust the entire mechanism, as they say, for yourself.
The button, which is intended for emergency situations, is connected directly, and the engine is connected through a box with a circuit and an automatic machine.
Tip: If you have assembled such a structure with your own hands at least once, you can easily repair such units. This is because you will know the entire mechanism of such a machine by heart.
Manufacturing a cutting machine based on a grinder
In addition to the classic variation of the cutting machine
There is also simplified version machine using a grinder (angle grinder). In this case, a frame is made into which the second frame is attached to the sleeve. It is on the second frame that the angle grinder is secured using metal fasteners.
In order for the grinder to return to its original position, it is necessary to secure the frame and grinder with a tight rubber band or spring. The frame itself is mounted on a prepared bed or on a large and heavy table. The heaviness of the table will ensure a minimum of vibration. If a frame is being prepared, then it must be mounted on a foundation prepared in advance. Such an invention could serve good tool in a home workshop or an excellent device for cutting metal.
General reviews about the machine
If you look for reviews on the Internet about this unit, you will only find positive reviews. Indeed, such an invention is very convenient in its own way. With its help, you don’t need to suffer with the grinder in your hands, in a bent state. If you choose a cutting tool for certain jobs, then only a disc cutting machine.
Video reviews
Video review of the disc cutting machine:
Video review of a cutting machine using a grinder instead of a disk:
Video review of the assembly of a homemade machine:
Video review of the cutting machine:
When, for some reason, you often have to process metal at home, you come to the understanding that working with an angle grinder is at least inconvenient. Cutting metal is much easier if you have a metal cutting machine. With its help, the cutting line will become ideal, and the established process will go much faster.
But if you think about buying such a machine and look through the prices in the store, you will find that they are very expensive, not every person can afford it. The way out of this situation is to make a metal-cutting machine with your own hands.
Homemade metal cutting machine
Equipment classification
So let's start with general information about metal-cutting machines. Structurally, they are all united by the presence of an electric motor, transmission and cutting disc. Finding a drawing for the manufacture of such equipment is not a problem. Once you become familiar with how a disc cutting machine works, it won’t be difficult to make the adjustments you need while building it yourself. Now let's look at the main fundamental nuances:
Cutting equipment is also classified according to the type of saw installation:
- Band machine.
- Abrasive-cutting.
The latter is designed for cutting thick metal fittings, various rods, square profiles and pipes of different diameters. Here you can cut various solid parts and profiles for different angles. The band saw operates on the basis of a closed cutting saw, so it is not a circular saw, the saw moves on pulleys. It’s worth saying right away that it’s easier to build a disk version with your own hands.
Self-production
For self-built disc cutting machine you will need:
- Steel corner.
- Welding machine.
- Bearings.
- Chain.
- On/off button.
- Channel.
- Electric drill.
- Sheet of steel for the work surface.
- Electric motor.
- A box that will contain the electrical component.
Having collected everything necessary materials and tools, you can begin construction. First of all, it is necessary to make the frame of the machine from a steel corner. First, they cut out according to the drawing individual elements, figure out how they will fit together, and then weld them into a single structure with their own hands.
A guide channel is welded to the top of the frame, which will become the basis of the structure for attaching the cutting element of the equipment. This channel will be used to connect the cutting disc to the motor. On next stage Vertical posts are attached to the channel and secured with bolts.
Now we need to weld another frame. It is made individually - for the specific electric motor that will be used in your machine. When choosing an electric motor, look to the side asynchronous motors, as they are more reliable and durable. There is one more point here: what more power, the smoother the disk will operate.
Installation of equipment on the frame
Now you need to connect the working shaft to the electric motor with your own hands. How this will be done is not important, if there are instructions on the drawing, then follow them. If the installation is done correctly, the equipment should operate correctly and reliably.
One more point: if you cannot make any part yourself, then contact a turner for help. He will be able to make you the correct pulley for the belt or flanges for fastening.
It is best to secure the engine to the frame using ordinary bolts and nuts; attach the control panel and a box with an electrical circuit and a switch to the frame next to it.
Channel on which it is fixed cutting element, must be spring-loaded so that as soon as you release it, it returns to its original position. The most convenient way to secure the spring is with a clamp and bolts.
Pay special attention to the electrical component. There must be an emergency stop button for the machine and a starting chain. In this case, the electric motor must be connected to electricity not directly, but through a box and automatic machine. Switching on and starting the electric motor will be provided by a three-pole starting machine, and the shutdown button is also powered through it.
When completing the final installation with your own hands, do not forget about the protective casing that will protect your eyes from flying sparks.
Making a machine based on a regular grinder
You can also build a cutting machine with your own hands from an ordinary grinder. For example, you have a good, reliable Makita grinder, and you don’t yet need a full-fledged machine, since you will use it from time to time. In this case, just like in the previous version, you need to weld the frame and bed with your own hands, and make a moving part from a pipe or channel to install the grinder.
Next, you will have to develop a mount for your specific angle grinder. The moving part is also spring-loaded, the technology here is similar. When making such a machine, do not forget that the grinder has such a thing as a reverse blow. This happens when the abrasive disc gets stuck in the workpiece and the grinder shoots back. In this case, fragments of the disk fly in all directions - this can seriously injure the person who is working. Therefore, when building equipment, pay attention protective casing, if it is not on the grinder.
Collapsible machine from a grinder
Now let's look at another way to make a metal cutting machine from a grinder with your own hands. The benefit of this design is that the machine is dismountable and portable. The tool you will need here is the same as for making a full-fledged machine, which we talked about above.
The drawing will depend on the model of the specific grinder.
The first thing you need to know about such a machine is that it is made on the basis of two frames located on the same axis. Here the lower frame is made in the form of a movable clamp and angle, and the mount for the grinder is made to move along a vertical line.
The spring is also present here - it is needed to return the feed mechanism to its original position. Using a welding machine, you can secure a ruler with a special limiter.
A similar machine is started from a starting pedal, which is connected to the network using a low-voltage relay. Having assembled all the parts, the functionality of the structure is checked for Idling. If everything works normally, no mechanisms rub against each other, then such a machine will serve you for a long time.
Considering that you can install various discs on an angle grinder, do not forget about the characteristics of the materials that you plan to cut. And, most importantly, never forget about safety precautions when working with metal-cutting equipment.
Video: Homemade cutting machine from an angle grinder
A metal cutting machine is useful for any workshop. It is required when construction work and in the metal shop. The market offers a wide variety of machines, but not all of them are affordable. For home workshops, the way out of this situation will be a homemade metal cutting machine. To make it, you will need certain skills in working with welding machine and metalworking tools. It will require a metal cutting unit from a master and the skills of an electrician.
Required tools and materials
In order for the future machine to reliably perform its functions, you will need a simple set of tools:
- drill;
- Bulgarian;
- taps;
- welding apparatus;
- spanners;
- dies.
An additional engine will be required. The optimal option is a 2 kW motor. It is recommended to purchase single-phase or three phase motors for such machines.
The necessary elements of the future unit are:
- sheet steel 3 mm thick;
- bearings 204;
- 2 pulleys;
- metal corner;
Any homemade mechanism need to be customized according to your requests and drawings. The master pays special attention to safety precautions. When working with cutting units, a particularly vulnerable part of the body is the hands, which can easily be damaged by neglecting simple rules work safety.
Disc cutting machines
In practice, craftsmen make machines of three types: belt, pendulum, disk. The first type is the most difficult to make in a home workshop. The best option considered a metal cutting machine disk type.
These units include:
- cutting disc;
- pendulum;
- Desktop;
- Electrical engine;
- drive mechanism.
For a standard workshop, the sufficient power of the engine used is 1.5 kW. The power of the electric motor depends on the type of metal used. If metal with thin walls is used during operation, then a power of 1.5 kW will be sufficient for such an engine. To carry out frequent work cutting pipes from profiles, you will need a 3 kW unit.
An important indicator of the engine is the number of revolutions it makes during the cutting process. metal part. The recommended speed is at least 3000 per minute. At low motor speeds, the cutting disc is not able to operate optimally.
Particular attention must be paid to the diameter of the circle used. Experts advise choosing circles with a diameter of 300-350 mm with an electric motor power of 2 kW. With the specified parameters, the recommended engine speed is 3000-4400 rpm. As the indicator increases, the circle is destroyed, and at low speeds it quickly overheats and wears out.
What to pay attention to
The choice of drive mechanism matters. A belt drive does this job well. To make it you will need 2 pulleys of the same size. The first pulley is fixed on the drive shaft of the cutting wheel, the second on the electric motor shaft. The shaft is mounted on two bearings.
To prevent the belt from slipping and maintain the necessary tension, it is necessary to secure the electric motor in the rear part of the pendulum. Fastening is done with 4 bolts.
The pendulum has its own separate requirements. It should be:
- balanced;
- well cooked;
- move perpendicular to the desktop.
The pendulum is mounted on two vertical racks. Each post has slots into which a bushing with a diameter of 11 mm is inserted. The stands are made of a metal square measuring 40*40 mm. Optimal height- 90 mm.
Desktop Design Requirements
The cutting unit must have a work table optimal sizes. The required parameters are: 701*1000*900 mm. The table is welded from a corner measuring 25*25 mm, after which it is covered with a steel sheet having a thickness of 3 mm. Slots are made in advance in the sheet at the point where the circle rotates.
It is fixed at the workplace with a rotary clamp and a rotary stop. Such a homemade mechanism allows you to cut products at an angle and perpendicularly.
Any cutting machine for metal requires compliance with a number of conditions during its installation:
- adjustment of the rotation angle is required (its location must be perpendicular to the surface of the desktop);
- the master needs to protect his hands from damage by installing covers around the disk and rotating elements;
- it is important to calculate the rotational speed of the circle in advance;
- equip the handle with an emergency stop button, which, when pressed by hand, instantly stops the operation of the entire mechanism;
- Place the wheel feed force in the cutting zone.
Procedure for making your own machine
Any machine with which it is possible to cut metal is assembled according to the following scheme:
- preparation of protective covers intended for installation on the drive belt;
- installing a motor using a drive belt as a connecting part between the motor and the shaft;
- manufacturing a shaft for attaching a pulley and a cutting disc to it (the unit is assembled and mounted on a pendulum, which is the upper part of the structure);
- manufacturing a shaft for mounting a pendulum on it;
- manufacturing a machine frame on which the metal for processing and a spark catcher are supposed to be mounted;
- the pendulum is fixed on the frame;
- electrical wiring is installed;
- The device is launched in test mode to check the build quality.
Features of the assembly of the device based on the grinder
In a workshop, it is possible to assemble a homemade metal cutting machine based on a grinder. Tools and materials needed:
- start relay;
- some profile pipes with square or rectangular cross-section;
- control pedal;
- metal sheet for desktop;
- spring;
- metal corner;
- two bearings.
Machine start relay
Unlike a disk-type machine, the operation of such a device has a more accurate result. The assembly process is very similar to the disk assembly, but has a number of features:
- frame parts are manufactured;
- a hinge joint is installed on the pendulum arm;
- a bracket is made in the shape of the letter “P”, in which holes are made for mounting the grinder gearbox;
- strips with clamps are made, due to which the grinder is secured to the pendulum;
- welding the clamp, bracket and cutting tool(an alternative would be to use threaded connection for installation of the specified elements);
- pressing into bearing supports;
- pressing bearings onto the shaft from both sides;
- welding the pendulum on the edge of the working platform with a mandatory distance of 0.5 cm from the edge;
- installation of an angle grinder and a protective casing;
- installation of the return spring.
After installing all structural elements, the machine is started in trial mode. Additionally, you will need to fit the groove under the tool and install supports with which the metal being processed is secured.
On final stage The work machine is covered with enamel. It will protect the unit from adverse effects rust.
When working with an angle grinder, the master must protect his hands and eyes from the effects of sparks. Any work is carried out wearing protective gloves and a mask.