CN210877583U - Precise small-sized numerical control lathe spindle - Google Patents

Abstract

The utility model discloses a small-size accurate numerical control lathe main shaft, include: the improved structure of the transmission belt pulley comprises a main shaft body, wherein a front shaft sleeve and a rear shaft sleeve are arranged on the main shaft body, a chuck is arranged at one end of the main shaft body and is positioned on one side of the front shaft sleeve, a chuck front end adapter is connected onto the chuck, a front end flange plate and a rear end flange plate are respectively installed on the front shaft sleeve and the rear shaft sleeve, the front end flange plate is fixedly connected with the front shaft sleeve, an O-shaped sealing ring is arranged between the rear end flange plate and the rear shaft sleeve, and the other end of the main shaft body is connected. The utility model discloses a be equipped with preceding axle sleeve and back axle sleeve on the main shaft body, lengthened the outer axle sleeve of the main shaft body, make and improve greatly on its atress rigidity when using, through setting up chuck front end adapter, can be applied to the 20 type chucks of the most part brand on the market, application range is wide, through setting up driving pulley to hug closely the installation of main shaft rear end face with driving pulley, can make the radial force littleer when the operation, convenient to use.

Description

A precision small CNC lathe spindle

technical field

The utility model relates to the related technical field of numerically controlled lathes, in particular to a spindle of a precision and small numerically controlled lathe.

Background technique

CNC technology refers to the technology that uses digital instructions composed of numbers, words and symbols to realize the motion control of one or more mechanical equipment. CNC lathe is a high-precision and high-efficiency automatic machine tool equipped with a multi-station turret or Power turret, the machine tool has a wide range of processing performance, can process linear cylinders, oblique cylinders, arcs and various threads, grooves, worms and other complex workpieces, with linear interpolation, circular interpolation various compensation functions, And it has played a good economic effect in the mass production of complex parts. CNC lathes are also called CNC lathes, namely computer numerically controlled lathes. 25% of the total, CNC machine tools are mechatronics products integrating mechanical, electrical, hydraulic, pneumatic, microelectronics and information technologies. The technical level of CNC machine tools and the percentage of production and total ownership of metal cutting machine tools are one of the important indicators to measure the development of a country's national economy and the overall level of industrial manufacturing. CNC lathe is one of the main varieties of CNC machine tools. It occupies a very important position in CNC machine tools. It has been widely valued by countries around the world for decades and has developed rapidly. CNC lathe spindle is an important part of CNC lathes. When the CNC lathe is working, it mainly clamps the tool through the spindle.

However, the existing CNC lathes are generally large in size, and the volume of the lathe spindle is also relatively large, which is inconvenient to process some small parts, and some small CNC lathe spindles have large radial forces during operation, which affects the use of , and the accuracy and strength of the spindle are not enough, and it is inconvenient for installation, debugging and maintenance, and the efficiency is low. In the process of use, the chuck is easy to loosen during rotation, which is inconvenient to use, and it needs to be improved.

Utility model content

The purpose of this utility model is to provide a precise and small CNC lathe spindle, in order to solve the problem that the existing CNC lathes mentioned in the above background technology are generally larger in size and the volume of the lathe spindle is also relatively large, which is inconvenient for some small CNC lathes. Parts are processed, and some small CNC lathe spindles have large radial force during operation, which affects the use, and the accuracy and strength of the spindle during use are not enough, and it is not easy to install, debug and maintain, and the efficiency is low. The head is easy to loosen when rotating, which is inconvenient to use.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a precise and small CNC lathe spindle, comprising: a spindle body, a front bushing and a rear bushing are arranged on the spindle body, and a chuck is provided at one end of the spindle body , the collet is located on one side of the front axle sleeve, the collet is connected with the front end adapter of the collet, the front axle sleeve and the rear axle sleeve are respectively installed with a front-end flange and a rear-end flange. The front end flange is fixedly connected with the front axle sleeve, an O-ring is arranged between the rear end flange and the rear axle sleeve, and the other end of the main shaft body is connected with a transmission pulley, and the transmission pulley is located at the rear end. One side of the blue plate is fixedly connected with one end face of the main shaft body.

Preferably, the O-ring is fixedly sleeved on the rear axle sleeve, and the surface of the O-ring is in contact with the rear end flange.

Preferably, a pin hole is formed on the collet, a fastening pin is installed in the pin hole, and one end of the fastening pin penetrates the pin hole.

Preferably, an inner end of the main shaft body is provided with a front end contact bearing, the front end contact bearing is provided with three groups, and the three groups of the front end contact bearing are close to the chuck.

Preferably, the other end inside the main shaft body is provided with a rear end contact bearing, and two groups of the rear end contact bearings are arranged, and the two groups of the rear end contact bearings are close to the drive pulley.

Preferably, a hollow shaft core is arranged through the main shaft body, and one end of the fastening pin extends to the hollow shaft core.

The utility model provides a precise and small CNC lathe spindle, which has the following beneficial effects:

(1) The utility model lengthens the outer shaft sleeve of the main shaft body by being provided with a front shaft sleeve and a rear shaft sleeve on the main shaft body, so that the force rigidity during use is greatly improved. By setting the front end adapter of the collet, It can be applied to most brands of 20-type chucks on the market, and has a wide range of use. By setting the drive pulley and installing the drive pulley close to the rear end of the main shaft, the radial force during operation can be smaller. By setting the front end The flange plate can make the installation, commissioning and maintenance of the main shaft easier, more efficient, and easy to use.

(2) The utility model can improve the super-high precision and strength of the main shaft by setting three groups of front-end contact bearings and two groups of rear-end contact bearings. The sealing ring can improve the waterproof and shockproof performance of the connection between the rear flange and the rear bushing, so that the waterproofness is good and the vibration is low. It prevents the collet from rotating and loosening during processing, and at the same time, the pin is easy to replace after being worn, and it has good flexibility and is easy to use.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of part A in Fig. 1 of the present utility model;

FIG. 3 is a schematic structural diagram of part B in FIG. 1 of the present invention.

In the figure: 1. Main shaft body; 2. Collet; 3. Front end adapter of collet; 4. Front flange; 5. Front contact bearing; 6. Rear contact bearing; 7. Back end flange; 8. Transmission pulley; 9. Hollow shaft core; 10. Pin hole; 11. Fastening pin; 12. O-ring; 13. Front bushing; 14. Rear bushing.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in Figures 1-3, the present utility model provides a technical solution: a precision small CNC lathe spindle, comprising: a spindle body 1, on which a front bushing 13 and a rear bushing 14 are provided, so that One end of the main shaft body 1 is provided with a collet 2, the collet 2 is located on one side of the front axle sleeve 13, the collet 2 is connected with a collet front end adapter 3, the front axle sleeve 13 and the rear axle sleeve 14 are on the A front-end flange 4 and a rear-end flange 7 are respectively installed, the front-end flange 4 is fixedly connected with the front axle sleeve 13 , and an O-shape is arranged between the rear-end flange 7 and the rear axle sleeve 14 . Sealing ring 12 , the other end of the main shaft body 1 is connected with a transmission pulley 8 , the transmission pulley 8 is located on one side of the rear end flange 7 and is fixedly connected to one end face of the main shaft body 1 .

The O-ring 12 is fixedly sleeved on the rear axle sleeve 14, and the surface of the O-ring 12 is in contact with the rear flange 7, and the O-ring 12 is used to set the rear flange 7 and the rear axle. The connection part of the sleeve 14 can exert the waterproof and shockproof effect of the O-ring 12, which can make the connection between the rear flange 7 and the rear axle sleeve 14 have good waterproofness, low vibration and high stability.

The collet 2 is provided with a pin hole 10, a fastening pin 11 is installed in the pin hole 10, and one end of the fastening pin 11 penetrates the pin hole 10. By setting the fastening pin 11, the fastening pin 11 can be used. Fastening is carried out when the collet 2 is clamped to prevent the collet 2 from rotating and loosening during processing, and at the same time, the pin is easy to replace after being worn, and has good flexibility and is easy to use.

An inner end of the main shaft body 1 is provided with a front end contact bearing 5, the front end contact bearing 5 is provided with three groups, and the three groups of the front end contact bearing 5 are close to the chuck 2. 1 Accuracy and strength when working.

The other end of the main shaft body 1 is provided with a rear end contact bearing 6, and the rear end contact bearing 6 is provided with two groups, and the two groups of the rear end contact bearing 6 are close to the transmission pulley 8. By setting two groups of rear end contact bearings The bearing 6 can further improve the precision and strength of the main shaft body 1 during operation.

The main shaft body 1 is provided with a hollow shaft core 9 through it, and one end of the fastening pin 11 is extended to the hollow shaft core 9. The structure of the hollow shaft core 9 can facilitate the processing of long rod materials and make the machine tool more versatile. The fastening pin 11 can be in contact with the workpiece clamped in the hollow shaft core 9, and at the same time can prevent the collet 2 from rotating loose during processing.

It should be noted that a precision small CNC lathe spindle can connect the workpiece with processing through the front end adapter of the collet 2 and the collet 2 during operation, and the front end adapter of the collet 2 can be used in most of the market. The brand 20-type collet 2 has a wide range of use. After the clamping is completed, it rotates through the transmission pulley 8, thereby driving the main shaft body 1 to rotate and perform work. The front end adapter of the collet 2 can also be disassembled, and the workpiece and the hollow shaft can be disassembled. The core 9 is matched, and at the same time, the clamping pin 11 can be used to fasten the chuck 2 when it is clamped to prevent the rotation of the chuck 2 from loosening during processing. , through the rotation of the drive pulley 8, the main shaft body 1 is driven to rotate and work. By installing the drive pulley 8 against the rear end surface of the main shaft, the radial force during operation can be smaller. The front bushing 13 and the rear bushing 14 lengthen the outer bushing of the main shaft body 1, so that the force rigidity during use is greatly improved. By setting the front end flange 4, the main shaft body 1 can be installed, debugged and maintained. It is simpler, more efficient, and easy to use. By setting three sets of front-end contact bearings 5 and two sets of rear-end contact bearings 6, the high precision and strength of the main shaft body 1 can be improved. An O-ring 12 is provided at the connection of the shaft sleeve 14, which can improve the waterproof and shockproof performance of the connection between the rear end flange 7 and the rear shaft sleeve 14, so that the waterproofness is good and the vibration is low. The utility model has a simple structure and is easy to use.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A precision small-sized numerical control lathe spindle is characterized by comprising: the utility model provides a novel multi-functional cutting machine, including the main shaft body (1), be equipped with preceding axle sleeve (13) and rear axle sleeve (14) on the main shaft body (1), main shaft body (1) one end is equipped with chuck (2), chuck (2) are located preceding axle sleeve (13) one side, be connected with chuck front end adapter (3) on chuck (2), install front end ring flange (4), rear end ring flange (7) on preceding axle sleeve (13) and rear axle sleeve (14) respectively, front end ring flange (4) and preceding axle sleeve (13) fixed connection, be equipped with O type sealing washer (12) between rear end ring flange (7) and rear axle sleeve (14), main shaft body (1) other end is connected with driving pulley (8), driving pulley (8) are located rear end ring flange (7) one side and with main shaft body (1) terminal surface fixed connection.

2. The precision small numerical control lathe spindle according to claim 1, characterized in that: the O-shaped sealing ring (12) is fixedly sleeved on the rear shaft sleeve (14), and the surface of the O-shaped sealing ring (12) is in contact with the rear end flange plate (7).

3. The precision small numerical control lathe spindle according to claim 1, characterized in that: the clamp is characterized in that a pin hole (10) is formed in the clamp (2), a fastening pin (11) is installed in the pin hole (10), and one end of the fastening pin (11) penetrates through the pin hole (10).

4. The precision small numerical control lathe spindle according to claim 1, characterized in that: the inside one end of main shaft body (1) is equipped with front end contact bearing (5), front end contact bearing (5) are equipped with three groups, three groups front end contact bearing (5) are close to chuck (2).

5. The precision small numerical control lathe spindle according to claim 1, characterized in that: the other end in the main shaft body (1) is equipped with rear end contact bearing (6), rear end contact bearing (6) are equipped with two sets ofly, and two sets of rear end contact bearing (6) are close to driving pulley (8).

6. The precision small numerical control lathe spindle according to claim 3, characterized in that: the main shaft body (1) is internally provided with a hollow shaft core (9) in a penetrating mode, and one end of the fastening pin (11) extends to be located on the hollow shaft core (9).

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