Cylinder Grinding Machine

Following Companies Manufacturing Grinding Machines Machine (35 Companies)

1. The workpiece must be constantly rotating.
2. The grinding wheel must also rotate constantly.
3. The stone wheel is loaded inwards and along the workpiece.
4. The stone wheel is selected according to the shape of the workpiece.

1. Excellent surface finish of the workpiece surface with an accuracy of about 2 microns
2. Sharpening tools such as inserts, drills, milling machines, etc.
3. Reduce partial shavings of the workpiece surface

1. Simple cylindrical parts
2. Parts with different diameters (stepped)
3. Cone parts
4. Camshaft parts
5. Crankshaft parts
6. Roller parts

• Center Grinding Machine (with tailstock)
• Centerless Grinding Machine (without tailstock)

• Transitional grinding

If the contact surface of the grinding wheel with the workpiece is less than the surface to be grinded, it means that the effective surface is smaller than the cutting surface of the workpiece, so both desk birds must go back and forth in front of the sanding machine to pay for the whole workpiece.

• Deep grinding

If the contact surface of the grinding wheel with the workpiece is greater than or equal to the surface to be grinded, it means that the width of the grinding wheel is greater than or equal to the cutting surface of the workpiece, so there is no need to move the table back and forth when the stone sinks, the Grinding process is done. Application of deep grinding method: Deep grinding is recommended when there is a need for mass production and automatic operation on the production line.

1. High versatility:

High versatility means that cylinder grinding machines are capable of grinding a variety of workpiece shapes, even those with an unusual shape, but note that the body must have a central axis of rotation.

2. High efficiency:

Due to the lack of need to open and close the workpiece, the processing time will be shorter. In its centreless type, each piece is grinded immediately after another piece

3. Can be equipped with a workpiece holder:

This means that the entire surface of the workpiece can be smoothed evenly and the torsional and flexural stresses caused by the pressure of the grinding wheel can be prevented, thus greatly reducing the risk of deformation.

4. No need for pre-work operations before grinding:

In the centreless type, there is no need to find the center of the workpiece.

1. In small parts such as surgical clamps
2. In large parts like train wagons
3. In the internal parts of roller bearings
4. In the central shafts of car shock absorbers
5. In the Piston Pins
6. In Valve Tappets
7. In making billiard and bowling balls

1. Through Feed

In through Feed, the adjusting wheel is placed in the correct position relative to the sanding wheel according to the diameter of the workpiece, then the workpiece is pushed from one side to the empty space between the sanding wheel and the adjusting wheel; While being driven into the empty space between the sanding and adjusting wheels, the workpiece surface is gradually grinded, the grinded part is removed from the other side and the non-grinded part enters the space between the two wheels. The main advantage of mid-load = in this method there is no limit to the length of the workpiece.

در باردهی میان گذر محدودیتی برای سنگ زنی طول قطعه کار وجود ندارد. There is no limit to the grinding length of the workpiece in the middle load. Although there is no limit for grinding a long piece, it should be noted that in order to prevent the piece from warping, supports were placed in the place before entering the grinding space and after it.

2. End Feed

In the end feed, the geometric shape of the stone wheel and the adjusting wheel must be adaptable to the surface of the part. In this method, the workpiece is gently inserted between the stone wheel and the adjusting wheel and goes to the stopper. In the end feed, the rotation and sanding of both rollers are the same and their relative speed is adjustable. Application of the end feed method: For grinding parts that have one side larger than the other (such as conical parts), the end feed is used.

3. In Feed

In the in feed, unlike through feed, there is no limit to the workpiece, so the diameter of the workpiece can be changed after it has been placed in the correct position. Rotate the piece, grind it. Application of in feed method: in feed grinding is used for grinding combed, stepped, conical and complex parts in general.

1. The difference between in feed and end feet is in the limitation of the length of the workpiece so that during in feed, there is a limitation along the length of the workpiece and the length of the workpiece should be smaller than the width of the wheel, but there is no such limitation in end feed.
2. In the end feed grinding method, the workpiece can enter the grinding space slowly, while in the in feed grinding method, the entire volume of the workpiece is placed in the grinding space (the space between the grinding wheel and the adjusting wheel) before starting the process.

In the in feed grinding method, there are much fewer restrictions for different forms of the workpiece than in the end feed.

1. There is no need to drill a hole into the workpiece to install the tailstock, so grinding is easier and faster.
2. Grinding of long and thin parts is possible with less risk.
3. In eccentric grinding, the workpiece finds its correct position and is grinded properly.
4. Instead of the radius of the part, the diameter of the part can be controlled, which increases the accuracy and reduces the grinding error.
5. The use of large stone wheels is possible, which increases productivity and reduces maintenance costs.
6. The pressure caused by grinding the workpiece makes the workpiece stronger in place.



Disadvantages of centreless grinding machines (without tailstock)

1. Instability of the workpiece at the grinding site: As mentioned, in machines without tailstock, the workpiece is not fixed, so it is unstable and may not lead to no grinding at the desired location, but by placing the workpiece in the correct geometric location can be Prevented this instability.
2. Inadequate focus on workpiece surface cavities (coaxial): There may potentially be cavities on the workpiece surface, all of which may be difficult to ensure in centreless grinding; if in the next stages of grinding, the process continues from the same starting point in the previous stage.
3. Impossibility of grinding in the opposite direction: In grinding without a tailstock, the force that the adjusting wheel exerts on the surface of the workpiece is not enough to overcome the friction.

Important tips to buy a cylindrical grinding machine

Purchasing an industrial machine is a direct investment in production and revenue. The more carefully and with better information the investment is made, the more likely it is to make a successful purchase and, of course, the faster the return on investment. According to the experience of the FactorNeed technical group, accurate information about the current and future production status can determine the capability of the machine and the production set. Determining production goals and examining the level of expectations from the future of the part or parts produced will greatly help the type of machine selected. Parameters such as production volume, variety of parts in terms of material, size, shape, and compatibility of the machine with the production line will be the characteristics of setting goals and expectations. Also, consider during the purchase period to experience a safe purchase.

Technical points include technical information and specifications of the cylindrical grinding machine, as well as sufficient information about the part or parts under production along with industrial drawings, which is required to correspond with the manufacturing companies or sellers of cylindrical grinding machines. After confirming and determining the machine to be purchased, it is possible to ensure the purchase and receipt of goods by observing business tips regarding the purchase and after-sales services, payment methods, etc.







What should we consider when buying a cylindrical grinding machine?

1. Prepare industrial drawings of the part or parts you are considering for grinding and enter the details.
2. Make all your expectations and wishes clear.
3. Specify the expected tolerances of the grinded parts. You can also ask the seller for the tolerance or accuracy of the machine.
4. For more emphasis, be sure to consider the range of changes in diameter and length of parts.
5. Examine the dimensions of the space occupied by the machine with the space you are considering so as not to disrupt the production, storage, and transfer of parts.
6. Also, determine the gross weight of the grinding machine so that a better substructure can be made for it.
7. The width of the stone wheel is effective in the grinding process, its speed, and the quality of grinding.
8. If you want to grind unconventional parts such as oval parts, cams, and crankshafts, you can specify the shape of the stone wheels and ask the seller to introduce a machine with the ability to grind them.
9. Also, consider the strength and speed of the stone wheel.
10. Determine the speed of the stone wheel and the amount of feeding in each turn according to your expectations.
11. Depending on the type of production, you can use CNC cylindrical grinding machines (CNC).
12. Specify the need for automatic workpiece feeding and automatic stone wheel replacement. The cost of the machine will increase if needed.
13. Cylindrical grinding machines are equipped with a numerical control system. PLC brand and how to use it in terms of planning and ease of use can increase production speed and reduce the costs of sleep. For this purpose, you can use the brands of LG, Siemens, ABB, Omron, Fanuc.
14. Describe the environmental conditions of the workplace, including humidity, temperature changes, dust levels, and proximity to other production equipment.
15. Write the maximum sound output of cylindrical grinding machines in decibels (DB).
16. Specify the number of shifts and working hours of each shift
17. If the machine uses hydraulic systems, you can ask the manufacturer to equip the hydraulic tank with a heating system if possible.
18. To reduce the risk of breakdown and maintenance costs, it is best to suggest the brand or technical information of high-consumption parts to the manufacturer.
19. Ask the seller to provide you with a map of the machine's electrical circuit, hydraulic circuit, parts list, cable connection, machine maintenance manual, and anticipated errors.
20. 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.
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