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Important points for buying a belt grinding machine
Using the maximum information in the field of process and machine to be purchased, along with information about the future status of production, including production circulation, production variety, and type of production parts in terms of dimensions, material, and shape, can examine the expectations of belt grinding machines. After reviewing and determining the goals and expectations of the production, it is very important to review the technical and commercial points.
Technical points include all the technical information of the belt grinding machine, including the equipment, facilities, and capabilities of the machine, and technical points specific to the production parts, including material, dimensions, shape, tolerances, and accuracy. The technical points of the parts have many defects in reviewing the technical points of the machines. The commercial points include the points that arise after the agreement and approval of the machine which means it covers everything from payments and shipping to installation and after-sales service and guarantees a secure purchase.
Tips to consider when buying belt grinding machines:
Preparation of a map of the workpieces along with inserting all the points and technical specifications of the workpiece, including dimensions, material, number, tolerances, and accuracy
Send all your tips, expectations, and requests to the manufacturer clearly.
Examine the dimensions of the machine and match the space provided for it.
Some belt grinding machines are produced in two directions, which allows the simultaneous use of both sides. If needed, you can order the two-way type.
belt grinding machines are produced both automatically and manually. The purchase of each is determined based on the needs of the buyer, the number of production, etc.
Consider the width and length of the grinding tape.
Also, consider the grinding range. The area where the machine can grind at the same time is called the grinding range.
Consider the consumption and power of the machine before buying it so that it is at its best in terms of capability and efficiency. You can increase the power of the machine by up to 20% to ensure its performance.
Pay attention to the weight of the machine before installation so that a suitable platform can be provided for its installation and commissioning.
There are a different number of workstations in different types of automatic belt grinding machines. The number of stations will be determined depending on how much the buyer expects from the final piece.
The use of a cooling system in automatic belt grinding machines is very important. Because heat can affect the systems and equipment of the machine.
Check the table movement of the automatic belt grinding machine and its movement speed.
The number of brushes used in multi-station belt grinding machines + their material has a direct impact on the grinding process and surface smoothness.
Monitor the safety and care equipment of the machine.
The power and speed of the motors can be determined according to the working conditions and the level of expectation from the final product and, if necessary, correspond with the manufacturer of the machine.
Determining working environmental conditions such as humidity, temperature changes, dust, and proximity to other production machines will increase the life of the machine.
The sound output range of belt grinders should be between 50 and 70 decibels.
If the rotary grinding process is the last process you consider, discuss this with the manufacturer.
Loading of the belt grinding machine can be done automatically or manually.
If the grinding machine uses an automatic control system, specify the brand and model of its numerical control system. For example, you can use LG, Siemens, ABB, Omron, Fanuc brands.
It is better to send the technical information and brand of high-consumption parts, wires, workers, brand and model of parts and motors, bearings, keyboards, etc. to the manufacturer.
Ask the manufacturer of the machine for a map of the electrical systems of the machine, a list of parts, a manual for the maintenance of the machine, the connection of the cables, and a guide for the predicted errors.
Enter the necessary agreements regarding after-sales services such as transportation, installation, training, replacement and repair warranty, etc. by the manufacturer in writing and have them signed by both parties.
Belt grinding machine
belt grinding is one of several grinding processes in the metalworking industry that uses abrasive belts or strips for chipping. In the belt (or strip) grinding process, a strip coated with abrasive material contacts the surface of the workpiece (automatically or manually) and polishes or sizes the workpiece. Belt grinding machines can grind all kinds of metals such as titanium alloys, stainless steel, and nickel, etc., and also saves time and increases grinding efficiency.
3 Application of belt grinding machine (strip):
- In the final stages, in order to eliminate deburrs, surface roughness, and polishing
- In Bug fixes, such as bumps, radii, and edge cuts
- Sizing and reaching the desired size of the workpiece by reducing its surface
The belt grinding machine (strip) consists of 3 basic parts, which are:
- Work rest support
- Grinding head
- Regulating head
Belt grinding methods:
The belt grinding machine can grind different types of parts with different methods, depending on the type of workpiece, expectations from the belt grinding machine, the purpose of grinding, etc., the appropriate method is selected.
- Storke Belt Grinding Machine
- Wide Belt Grinding Machine
- Back stand Belt Grinding Machine
- Centerless Belt Grinding Machine
- Manual Belt Grinding Machine
- Platen Belt Grinding Machine
Checking the Wide Belt Grinding Machine:
Wide belt grinding machine is one of the most common and widely used grinding methods in which the abrasive tool, a wide belt in the form of a belt made of sandpaper performs abrasion operations and the grinding process takes place. Wide belt grinding machine can be used in many cases because different variables can be changed and various goals can be achieved. The main application of wide belt grinding machine: mostly in grinding special metals such as titanium, nickel and steel alloys Stainless steel is used to cut and measure the pleats. In wide belt grinding, a wheel - called the Contact Wheel - supports the sandpaper, so the contact wheel and the sandpaper must be proportional to each other.
Select the appropriate contact wheel in the wide belt grinding machine:
Hardening, serrated and coarser ceramic abrasive wheels are commonly used in chipping operations.
In the final grinding operation, a smoother and softer abrasive contact wheel with medium grade is usually used.
Changeable parameters in wide belt grinding machine:
In order to achieve various goals, we can change the possible parameters in the wide belt grinding machine, which we will mention.
- Grinding belt speed (sandpaper belt)
- Pressure from the sandpaper belt on the workpiece
- Workpiece loading speed
- The contact surface of the grinding tape with the workpiece
- Existence of one or more heads in a wide belt grinding machine
- Performing dry or wet grinding process and what kind of cooling material is used
* Note * In a wide belt grinding machine, the first head is used for the movements of the grinding tape and other heads are used to improve the grinding in the final stages.
Advantages of belt grinding machine:
Belt grinding machines are 5 to 20 times more efficient than stone grinders.
Belt grinding machines use much less energy than other grinding machines.
The abrasive belt, which is considered a grinding tool in this type of machine, weighs much less than the grinding wheel in other grinding machines.
Belt grinding machines produce less heat during grinding, so the speed of heat transfer to the environment and their cooling is high; As a result, they are less likely to lose efficiency.
The abrasive agent is less likely to be eaten and thrown in the belt grinding machine than other grinding machines.
The flexibility of the abrasive belts reduces noise, shock, and vibration in the belt grinding machine.
Also due to the flexibility of the belt grinding strips, when the crimping belt (sandpaper belt) hits the curved surfaces of the workpiece; Easily adapts to the curvature of the workpiece surface and performs grinding.
The belt grinding machine has a relatively simple structure, so it is easier to maintain, thus making it safer and less expensive.
The applications of the belt grinding machine are wide, in that it has the ability to grind ferrous and non-ferrous metals, non-metallic materials such as wood or leather, plastic, etc.
In a belt grinding machine, the risk of burning the workpiece is very low because less heat is generated during grinding, and heat transfer to the environment is faster.
Due to the lack of complexity of strip grinding machines, they are easy to work with.
In strip machines, the production of dust from grinding is less.
Disadvantages of using a belt grinding machine:
In belt grinding machines, the consumption of abrasive belts - which is considered as a grinding tool in this type of machine - is high.
belt grinding machines are not capable of grinding holes and curves with small diameters.
Belt grinders are not suitable for grinding gears.