Clamping protection mechanism for motor rotating shaft machining

Abstract

The clamping protection mechanism comprises a shell, a worm and a chuck, a sealing cover is installed at the lower end of the shell, a lead screw is rotationally connected to the sealing cover, a movable disc is in transmission connection to the lead screw, a plurality of slope columns are fixedly connected to the upper surface of the movable disc, and the worm is rotationally connected to the side face of the shell. The surface of the lead screw is fixedly connected with a worm gear, the worm gear is in transmission connection with the worm, the chuck is installed in the middle of the shell, the chuck is provided with a plurality of clamping blocks, the lower surfaces of the clamping blocks are provided with inclined face grooves, inclined face columns are inserted into the inclined face grooves, and the space in the clamping blocks is slightly larger than the diameter of a motor rotating shaft. The worm is screwed to drive the worm gear and the lead screw to rotate, the lead screw drives the movable disc to move upwards, the movable disc abuts against the clamping block through the inclined face column, the clamping block contracts inwards to clamp the motor rotating shaft, the contact area of the clamping block and the motor rotating shaft is small, the clamping effect is good, and clamping marks cannot be left on the motor rotating shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of motor shaft processing, in particular to a clamping protection mechanism for motor shaft processing. Background Art

[0002] During machining of motor shafts using machine tools, a chuck is often used to clamp the motor shaft to ensure stability and precision during machining. However, the jaws of most chucks are rectangular, resulting in a small contact area between the jaws and the motor shaft when clamping. Therefore, the chuck's clamping force must be sufficiently high to prevent the motor shaft from moving or vibrating during machining. However, increasing the clamping force can easily leave marks on the motor shaft, while reducing the clamping force can cause friction on the motor shaft due to insufficient clamping force. Utility Model Content

[0003] The purpose of the present utility model is to provide a clamping protection mechanism for machining a motor shaft, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a clamping and protecting mechanism for processing a motor shaft, comprising a housing, a cover mounted on the lower end of the housing, a lead screw rotatably connected to the cover, a movable plate rotatably connected to the lead screw, and a plurality of inclined columns fixedly connected to the upper surface of the movable plate;

[0005] A worm is rotatably connected to the side of the housing, a worm wheel is fixedly connected to the surface of the lead screw, and the worm wheel is transmission-connected to the worm;

[0006] A chuck is mounted to the middle of the housing. The chuck has a plurality of clamping blocks. The lower surfaces of the clamping blocks are provided with inclined grooves, and the inclined columns are inserted into the inclined grooves.

[0007] The motor shaft is inserted into a plurality of clamping block brackets. The part of the clamping block that contacts the motor shaft is an arc surface, which has a large contact area with the motor shaft and will not cause clamping marks when the motor shaft is clamped.

[0008] Furthermore, an integrally formed connector is provided on the lower surface of the cover, and the connector can be connected to the chuck, making it convenient to replace the clamping protection mechanism.

[0009] Furthermore, the end of the worm is fixedly connected with a hexagonal screwing head, which makes it convenient to screw the worm and control the clamping block to clamp the motor shaft.

[0010] Furthermore, a hexagon socket bolt is inserted in the middle of the chuck, and a screw hole matching the hexagon socket bolt is provided in the middle of the shell surface. When replacing the chuck, it is only necessary to loosen the hexagon socket bolt.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) The space inside the clamp is slightly larger than the diameter of the motor shaft. Insert the motor shaft into the clamp, turn the worm to drive the worm wheel and the lead screw to rotate, and the lead screw drives the movable plate to move upward. The movable plate supports the clamp through the inclined column, so that the clamp shrinks inward and clamps the motor shaft. The contact area between the clamp and the motor shaft not only has a good clamping effect, but also does not leave clamping marks on the motor shaft.

[0013] (2) The clamping protection mechanism can be installed on the machine tool by clamping the connector with the machine tool's chuck. It is easy to install. When you need to process motor shafts of different sizes, you only need to prepare different chucks. You can replace the chucks by loosening the hexagon socket bolts without replacing the entire clamping protection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the connection between the housing and the inclined column of the utility model;

[0015] Figure 2 This is a top view of the clamping block of the utility model;

[0016] Figure 3 It is a cross-sectional view of the present invention.

[0017] In the figure: 1. Housing; 2. Hexagon socket screw head; 3. Worm; 4. Bevel column; 5. Screw hole; 6. Hexagon socket bolt; 7. Clamping plate; 8. Clamping block; 9. Cover; 10. Connector; 11. Bevel groove; 12. Screw; 13. Worm gear; 14. Moving plate; 15. Bearing; 16. Ball; 17. Motor shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example:

[0020] See also Figure 1-3 The utility model provides a technical solution: a clamping protection mechanism for motor shaft processing, comprising a housing 1, a cover 9 installed at the lower end of the housing 1, a screw 12 rotatably connected to the cover 9, a movable plate 14 transmission-connected to the screw 12, the screw 12 rotates to control the movable plate 14 to move up and down, a plurality of inclined plane columns 4 are fixedly connected to the upper surface of the movable plate 14, the inclined plane columns 4 pass through the housing 1, and can prevent the movable plate 14 from rotating together with the screw 12;

[0021] The worm 3 is rotatably connected to the side of the housing 1. A worm wheel 13 is fixedly connected to the surface of the lead screw 12, and the worm wheel 13 is transmission-connected to the worm 3. The worm 3 drives the worm wheel 13 and the lead screw 12 to rotate. The worm wheel 13 and the worm 3 can be self-locking to avoid loosening of the motor shaft 17 after being clamped.

[0022] The chuck 7 is installed in the middle of the housing 1. The chuck 7 has several clamping blocks 8. The lower surface of the clamping block 8 is provided with a bevel groove 11. The bevel column 4 is inserted into the bevel groove 11. When the bevel column 4 moves upward, it pushes the clamping block 8 to deform slightly, thereby clamping the motor shaft 17.

[0023] In this embodiment, if Figure 3 As shown, a bearing 15 is installed on the inner surface of the cover 9, and the lower end of the screw 12 is inserted into the bearing 15. The bearing 15 improves the smoothness of the rotation of the screw 12, reduces the problem of jamming, and saves effort in twisting the worm 3.

[0024] In this embodiment, if Figure 3 As shown, the lower surface of the cover 9 is provided with an integrally formed connector 10, which is convenient for clamping with a chuck, making it easy to install the clamping protection mechanism on the machine tool.

[0025] In this embodiment, if Figure 1 As shown, the end of the worm 3 is fixedly connected to a hexagonal screw head 2, and the hexagonal screw head 2 and the worm 3 can be screwed using a hexagonal bolt 6, which makes it more convenient to use a clamping protection mechanism.

[0026] In this embodiment, if Figure 2 and Figure 3 As shown, a hexagon socket bolt 6 is inserted in the middle of the chuck 7, and a screw hole 5 matching the hexagon socket bolt 6 is provided in the middle of the surface of the shell 1. The chuck 7 can be replaced by unscrewing the hexagon socket bolt 6, which is convenient for replacing the chuck 7 according to the size of the motor shaft 17.

[0027] In this embodiment, if Figure 3 As shown, a ball 16 is placed on the upper end of the screw 12 , and the ball 16 is rotatably connected to the housing 1 to prevent the housing 1 from affecting the rotation of the screw 12 .

[0028] Specifically, when in use, use the chuck of the machine tool to clamp the connecting head 10, insert the motor shaft 17 into the clamping block 8, use the hexagon socket bolt 6 to screw the hexagon socket screwing head 2, the hexagon socket screwing head 2 drives the worm 3 to rotate, the worm 3 drives the worm gear 13 to rotate, the worm gear 13 drives the lead screw 12 to rotate, the lead screw 12 drives the movable plate 14 to move upward, the movable plate 14 passes through the inclined column 4 to push the clamping block 8, the clamping block 8 is slightly gathered towards the middle to ensure that the clamping block 8 clamps the motor shaft 17, there are eight clamping blocks 8 and the contact area with the motor shaft 17 is large, and no clamping marks are left on the motor shaft 17;

[0029] When the size of the motor shaft 17 does not match the chuck 7, unscrew the hexagon socket bolt 6 to remove the chuck 7, and then use the hexagon socket bolt 6 to re-fix the new chuck 7 to the housing 1, which is flexible and convenient to use.

[0030] 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, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping protection mechanism for motor shaft processing, characterized in that: include: A housing (1), a cover (9) is installed at the lower end of the housing (1), a lead screw (12) is rotatably connected to the cover (9), a movable disk (14) is transmission-connected to the lead screw (12), and a plurality of inclined columns (4) are fixedly connected to the upper surface of the movable disk (14); A worm (3), the worm (3) being rotatably connected to the side of the housing (1), a worm wheel (13) being fixedly connected to the surface of the lead screw (12), and the worm wheel (13) being transmission-connected to the worm (3); A chuck (7) is installed in the middle of the housing (1). The chuck (7) has a plurality of clamping blocks (8). The lower surfaces of the clamping blocks (8) are provided with inclined grooves (11). The inclined columns (4) are inserted into the inclined grooves (11).

2. The clamping and protecting mechanism for motor shaft processing according to claim 1, characterized in that: A bearing (15) is installed on the inner surface of the cover (9), and the lower end of the lead screw (12) is inserted into the interior of the bearing (15).

3. The clamping and protecting mechanism for motor shaft processing according to claim 1, characterized in that: An integrally formed connector (10) is provided on the lower surface of the sealing cover (9).

4. The clamping and protecting mechanism for motor shaft processing according to claim 1, characterized in that: The end of the worm (3) is fixedly connected with a hexagonal screwing head (2).

5. The clamping and protecting mechanism for motor shaft processing according to claim 1, characterized in that: A hexagon socket bolt (6) is inserted into the middle of the chuck (7), and a screw hole (5) matching the hexagon socket bolt (6) is provided in the middle of the surface of the shell (1).

6. The clamping and protecting mechanism for motor shaft processing according to claim 1, characterized in that: A ball (16) is placed on the upper end of the lead screw (12), and the ball (16) is rotatably connected to the housing (1).

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