If you often have to deal with cutting tools or drills, then you notice that they tend to lose their sharpness. Naturally, in this case they cannot fulfill their functions in full. Benchtop grinder will fix the situation. However, first you need to understand the features of its application.
Description and Application
So, the table grinder is a small device equipped with rotating abrasive wheels. Due to its small size, it can be installed not only in production conditions, but also in a home garage.
A table grinding and grinding machine is used for sharpening knives and tools used for mounting structures, drills, scissors, axes. Naturally, this procedure can be done manually, but it will take a lot of time. In addition, you can use a table grinding machine to clean tools from rust, polishing some surfaces with a felt wheel.
Device advantages
The device has the following advantages:
- Simplicity and reliability of the design. The device can work with proper operation for a very long time. The device is placed directly on the table.
- Different bore for grinding wheels.
- The possibility of using additional disks: felt, metal brushes. This equipment is most often installed on universal devices.
- Fairly low noise and vibration.
- Dust protection of the main elements of the device. This extends the life of the equipment.
- Ability to adjust the tool stop.
- Protective screen. It is necessary in order to prevent chips or sparks from getting into the eyes.
Construction device
So, the table grinding machine has a fairly simple structure:
- Asynchronous electric motor. It is able to provide a relatively low speed of rotation of the circles and a relatively low noise level.
- Grinding wheels (abrasive). They are located on both sides of the engine parallel to each other. One of them has a large grain and is used for rough processing of the tool, and the second - for fine grinding. The upper part of the circles is covered with a protective casing. Most often corundum circles are used in the work.
- Stand. It serves as a support for the tool being machined. It can be adjusted in height and rotated at the desired angle. If you want to choose a bench grinder with an additional drill processing function, then pay attention to the presence of special grooves for them.
- Transparent protective screen. It will not let sparks and metal shavings get into your eyes.
- Power on and off button.
- Power cord.
The grinding and grinding machine is additionally equipped with a lamp to illuminate the working area.
Specifications
Before choosing a device, you must definitely understand its parameters. Bench grinding machine with two grinding wheels basically has the following technical characteristics:
- Voltage during operation: 220 V.
- Power: from 200 W to 5 kW.
- The diameter of the circle: 15-25 cm, and its thickness: 1.6-3.2 cm.
- Spindle idle speed: 1300-2980 rpm.
- Weight: about 3 kg.
Variants of the apparatus
If you decide to purchase a table grinding machine, the types of devices should be considered necessarily. You can classify a product as follows:
- Universal. It can handle completely different tools. Such a device is equipped with conventional and special devices with which the product can be fixed.
- Special. Such a machine serves for sharpening only one type of tool, therefore it has a narrower range of applications.
In addition, there is a wet grinder and a grinding and grinding machine. In the first case, a circle is used at low speeds, while part of it is always in the water tray.
A table grinding grinder, the price of which can vary between 1200-70000 rubles, is additionally equipped with a grinding belt instead of one wheel . This makes the device multifunctional.
Product Selection Features
If you decide to buy a table grinding machine, how to choose a product is the most important question. The following parameters should be considered here:
- Device type. If you are engaged in frequent, but unprofessional sharpening of different tools, then it is better to choose a universal option. The household appliance can operate continuously for no more than 20 minutes. After work, he should rest as much time. Professional devices can last much longer.
- What will the product be used for. You may need extra circles: with metal bristles or felt.
- The cost of the apparatus. If you do not need to use it too often, then you should not buy an expensive machine.
- Allowable circle size.
- The maximum size of the tool to be processed.
- Spindle speed
- Additional features and accessories.
- Manufacturer. It is better to give preference to those manufacturers who have a good reputation.
- Power. At home, you do not need a too powerful device.
Terms of Use
In order for the tool to work properly for a long time, and you did not get injured, you need to use it correctly. Observe the following operating instructions:
- During operation, try to apply the tool without bias, skew, and the entire plane to the circle.
- Sharpening often causes the blade to glow. In order to avoid such a situation, it is necessary to control the speed of the sharpener - it should be low. In addition, the stone should be periodically dipped in water.
- If a uniform burr has appeared on the blade along the entire edge, then the processing of the tool can be stopped. To the necessary "ideal" it can already be brought manually.
- The presented device does not require special care, but it should not be kept in dust either. Periodically, it will be necessary to remove metal chips and dust.
- In order to use the presented tool, you do not need professional skills. However, instructions for its use must be read.
- During work, you need to be careful and focused. No extra items or tools should bother you. After use, the machine should rest.
- If the device is defective, then do not repair it yourself or plug it into a power outlet. It is better to contact a special service where they will diagnose the device and restore its functionality.
That's all the features of grinding machines. Good luck