Can anyone tell how hydraulic chucks work

The principle of hydraulic chucks is as follows: If we use the concentric cylinders of two inflatable shafts, seal the two ends to form a cylindrical cavity, fill one of the cylinders with hydraulic oil, and apply a certain pressure to the oil, this pressure will be transmitted to each part of the oil cavity with an equal number. If the outer cylinder wall of these two concentric cylinders is made thin, it will expand outward after being pressed, and if the inner cylinder wall of these two concentric cylinders is thinned, it will expand inward after being pressed. According to this deformed thin wall, it is possible to realize the expansion clamping of the inner hole and the expansion clamping of the outer diameter.

Because the thin wall at this time is actually evenly subjected to oil pressure in every place, so after the inner hole and outer diameter of the part are tightened, its clamping accuracy will be very high, and the hydrostatic expansion mandrel and hydraulic chuck are developed according to this principle and successfully applied to the machinery manufacturing industry.

1. Extremely high precision: runout accuracy (runout<2 m);

2. In the whole clamping range, the expansion sleeve can stably maintain a cylindrical expansion, with large clamping force and good rigidity, and can transmit higher clamping torque;

3. Outstanding abrasion strength performance; Very good adaptability to working conditions, easy operation performance; No need for expensive and complex peripherals; Reduced equipment costs;

4. High processing efficiency, better flexibility of change;

This type of tool holder clamping method is different from the traditional tool holder system, tightening only requires a pressurized bolt, when the bolt is tightened, it will push the piston seal to produce a hydraulic oil pressure in the tool holder, this pressure is evenly transmitted from the circumferential direction to the steel expansion sleeve, and the expansion wall clamps the tool again.

Summary. The oil chamber of the hydraulic chucks is manufactured by high-precision machining and welding techniques. First of all, the space for the oil cavity is reserved in the tool holder, and the shape and size of the oil cavity are determined by fine design.

The tool holder is then machined into shape using a machine tool, including drilling, reaming, turning and other operations to create the internal space of the oil cavity. Then, the finished parts are welded to seal the oil chamber and make it function as a pressure vessel. Finally, after strict testing and testing, the quality and stability of the oil chamber are ensured to ensure the use effect and safety of the tool holder.

I'm still a little confused, can you be more detailed?

The oil chamber of the hydraulic chucks is made by high-precision machining and welding technology. First of all, the space for the oil chamber is reserved in the tool holder, and the fine design of the oil chamber is carried out to determine the shape and size of the oil chamber. The tool holder is then machined into shape using a machine tool, including drilling, reaming, turning and other operations to create the internal space of the oil cavity.

Then, the finished parts are welded to seal the oil chamber and make it function as a pressure vessel. Finally, after strict testing and testing, the quality and stability of the oil chamber are ensured to ensure the use effect and safety of the tool holder.

1. When locking the hydraulic chuck, please lock the locking screw to the end, but remember not to empty the locking screw before inserting the tool. (When manually locking the screw, please lock until the screw stops naturally, at this time, the clamping force of the hydraulic tool holder is the best, and the empty lock screw will lead to problems such as the tool cannot be inserted, the tool holder leaks oil and the accuracy decreases).

2. When installing the tool, please insert the tool into the bottom of the hydraulic tool holder and stick it tightly. If it is not possible to close the clamp due to different processing depths, please use a hydraulic collet, and when the collet is not used, please do not exceed the distance of more than 8 mm from the lower end of the inner diameter of the tool holder. (If it is less than 8mm, it will cause the inner diameter of the shank to shrink and deform).

3. When inserting the cutting tool, please remove the moisture and oil stains on the inner diameter of the tool holder and the cutting tool. (Liquid foreign matter may cause the tool to fall off during machining.)

4. It is forbidden to unscrew the closed screws on the hydraulic chuck. (If you unscrew the sealing screw on the hydraulic chuck, it will cause oil leakage and the chuckle will not work properly.) If the handle screw is damaged or there is no hydraulic pressure during the work, please do not disassemble or insert other foreign objects without permission, and contact the purchasing office immediately.

Hydraulic chucks are suitable for tools: milling cutters.

Drills, reamers.

Contour precision tools. (Please do not use hydraulic chucks for roughing).

The principle of hydraulic chucks is to use the concentric cylinders of two inflatable shafts to seal the two ends to form a cylindrical cavity, with hydraulic oil.

Fill one of the cylinders and apply a certain amount of pressure to the oil, and this pressure will be transmitted to each part of the oil chamber with an equal value. The outer wall of these two concentric cylinders is thin, and after being subjected to pressure, it will expand outward, and according to this deformed thin wall, the expansion clamping of the inner hole and the expansion clamping of the outer diameter can be realized. At this time, the thin wall is actually evenly subjected to oil pressure in every place, so after the inner hole and outer diameter of the part are tightened, its clamping accuracy will be very high, The hydraulic chuck is developed according to this principle, and successfully applied to the CNC machining and manufacturing industry.