Modern grinding machines are equipped with powerful engines and are able to perform a lot of tasks. In particular, they have the ability to process wooden objects of various shapes. Many modifications are used to clean rounded surfaces. Models with horizontal guides are often used to work with pointed ends.
To process metal objects, powerful devices with tight belts are required. It is quite difficult to make a belt sander with your own hands. However, it should be borne in mind that there are various modifications that do not apply to complex devices.
Woodwork Models
You can make a simple grinding machine for wood with your own hands even without the use of an electric motor. In this case, it is more advisable to consider drum modifications. First of all, a bed is installed for the stability of the structure. Then guides are fixed on it. They are necessary to secure the workpiece. A shaft with a flywheel should be attached to the drum. Due to this, it will be possible to rotate the structure. In this situation, the drum should be selected with a small diameter.
Metalworking Devices
In order to make a metal grinding machine with your own hands, it is more advisable to select an electric motor with a power of at least 5 kW and a frequency of 55 Hz. Before starting work, it is important to take all measurements. In this case, a lot depends on the size of the metal workpieces to be processed. After installing the bed, the guides are immediately fixed. In this situation, the beam is mounted on the frame.
To adjust the position of the unit, a lever with a return spring is used. The drive shaft of the model should be at least 5.5 cm in diameter. The emery skin should be selected wide. Handwheels are used to adjust the guides. If we consider tape modifications, then there additionally rollers will be required for the machine. They must be mounted above the bed.
Drum modifications
You can make a drum grinding machine with your own hands or electronic type. If we consider the second option, then we should first make the frame of steel sheets. Next, the frame is laid on which the guides will be. The next step is to take up the electric motor. It must be located at the bottom of the bed.
The belt positioning mechanism itself can be located on the side of the machine. Due to this, the working area of the tool will expand significantly. In this case, the casing can be used plywood type. For greater stability of the machine, you will need to install the legs. The carrier plate in the modification must be with a shield. After fixing it, it remains only to install a flywheel that regulates the position of the guides.
Spindle models of machines
Do-it-yourself spindle grinding machines can only be assembled using electric motors. Quite often, experts recommend choosing 5 kW models. The main element of the machine is considered to be the spindle mechanism. It should be installed on the bed. Directly guides are fixed in horizontal position.
After fixing the unit, the longitudinal plate should be fixed. Workpieces will be stacked on it. Screws are used to secure the stand. The rollers in the structure must be located on both sides of the spindle mechanism. The carrier plate in the structure must withstand heavy loads. Shelves are used to increase torque. In this case, the position of the guides is adjusted using the handwheels.
Model with cam backrest
You can make a belt sander with your own hands with a cam rest quite quickly. Manual modifications are very rare. In this case, the engine should be selected with a power of 5 kW and a frequency of at least 55 Hz. The grinding type drum must be mounted on a working platform. Fixing it occurs on the bed. Handwheels are standardly used to adjust the position of the guides.
The tape in this case is selected in a small size. To protect the electric motor, many experts recommend using a casing. In order to fix the workpiece, a powerful support is necessary. Directly, the lunette plays the role of a feeding device. It should be fixed next to the drive shaft. The control units on the devices are installed different. Many experts in this case are advised to select high-quality CNCs that are able to regulate engine speed.
Devices with horizontal rails
Assembling a sanding machine with horizontal rails with your own hands is a very difficult task. In this case, a wide bed is required. The unit must withstand heavy loads. The legs are used directly to fix the working platform. Guides for the model must be located above the lower frame. The mechanism of the position of the tape is fixed near the electric motor. Also, gearboxes are often used in these devices. In order to install the side plates, you need a welding machine.
Vertical Rail Models
You can make a grinder with vertical rails by yourself using a welding inverter. In this case, the tape should be fixed on the drum. Directly, the electric motor for configuration is taken with a power of about 7 kW and a frequency of 55 Hz. The beam of the model must be rigidly fixed at the base of the machine.
A skirt for her is selected with a head. A small plate is required to stop the workpiece. A space for the roller mechanism should be provided near the rails. All this will allow you to easily change the position of the workpiece on the desktop.
Longitudinal Machines
A do-it-yourself sander with a longitudinal rest can be mounted in different ways. Electric motors are most often selected with low power. Flywheels in this case are fixed at the base of the bed. Bearings are used to adjust the pulley. A plate is required for a machine with a steel stop. The base plate of the model is used of small thickness. The gearbox is most often used rack and pinion type. To adjust the position of the guides you will need a lever. The rest is mounted directly on the edge of the support beam. You can use screws to fix it.
Modification with rolling bearings
With the help of rolling bearings, you can also make a grinding machine with your own hands. The advantage of these configurations is their versatility. Blanks in this case can be processed at various angles. The assembly of the machine should begin with the installation of the bed. Steel plates are used for the working platform. Guides are better soldered in a horizontal position.
Flywheels for them are installed last. The drive shaft in the structure must be under the frame. The mechanism of the position of the tape is installed near the electric motor. For the safe use of the machine, fences are used. After fixing the flywheels, it remains only to fix the casing to protect the mechanism from dust.
Slide Devices
With sliding bearings, making a machine is quite simple. In this case, the guides can be installed in a horizontal position. The working platform for these configurations is mainly made of small width. Directly supports at the machines must be on the edge of the upper beam. However, first of all, you should make a frame for the tool. For this, metal profiles are selected. You can also quite successfully use the pipe. The upper beam is attached to the frame.
Electric motors are used with a power of about 7 kW and a frequency of 50 Hz. Angles are used to adjust the position of the pulley. The guides of the model should be fixed on the plate. For free rotation of the bearings, ball bearings are used. The mechanism of the position of the tape is fixed near the electric motor. If we consider the classical model, the drive shaft is installed under the guides. Thus, maximum spindle rotation is achieved. To protect the operator during operation, guards are used. You can also install a handrail at the edge of the work platform.
5 kW model
At 5 kW, how to make a do-it-yourself grinding machine? They make such devices most often with a spindle mechanism. The upper beam of the models can be located on the bed. Shelves are most often used for the guide type. The tape position mechanism should be installed next to the electric motor. Modifications are different in the type of upper blocks.