CN218476511U

CN218476511U - Main shaft chuck

Info

Publication number: CN218476511U
Application number: CN202222504326.0U
Authority: CN
Inventors: 邵帅; 邹斌
Original assignee: Wuxi Stial Technologies Co ltd
Current assignee: Wuxi Stial Technologies Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-02-14
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to a chuck, especially a main shaft chuck, including main shaft pole and main shaft head, the main shaft head is located the tip of main shaft pole, the overhead tight conical surface of clamp, tight hole of clamp and a plurality of tight groove of clamp that are equipped with of main shaft, press from both sides tight groove ring array and set up, and with press from both sides tight conical surface with it communicates with each other to press from both sides tight hole, be equipped with a plurality of elastic tanks on the main shaft pole, the elastic tank is located press from both sides the below of tight conical surface, and with it communicates with each other to press from both sides tight groove. The utility model provides a pair of main shaft chuck has improved elasticity through increasing a plurality of elastic tanks, and then makes the chuck expand easily, and convenient automatic change is polished head, still presss from both sides tight groove through the extension and increases elasticity to increased a plurality of grooves of holding tightly in inside, improved frictional force, can guarantee to polish reliable the clamp of head tightly.

Description

Main shaft chuck

Technical Field

The utility model relates to a chuck, especially a main shaft chuck.

Background

The existing spindle chuck adopts a conical shape and is provided with a plurality of clamping grooves, and the existing chuck has the following conditions:

the elasticity is insufficient due to the high rigidity of the chuck, and the polishing head is not easy to take out after the chuck is clamped, so that the automatic replacement of the polishing head is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a high, the easy open main shaft chuck of elasticity, concrete technical scheme is:

the utility model provides a main shaft chuck, includes main shaft pole and main shaft head, the main shaft head is located the tip of main shaft pole, the overhead clamping conical surface that is equipped with of main shaft, press from both sides tight hole and a plurality of tight groove of clamp, press from both sides tight groove annular array setting, and with press from both sides tight conical surface with press from both sides tight hole and communicate with each other, be equipped with a plurality of elastic tanks on the main shaft pole, the elastic tank is located press from both sides the below of tight conical surface, and with press from both sides tight groove and communicate with each other.

Preferably, a plurality of holding grooves are arranged on the clamping hole.

Furthermore, the holding groove and the clamping conical surface are arranged oppositely.

Preferably, the length of the clamping groove is greater than the depth of the clamping hole, and the clamping groove is communicated with the shaft hole in the main shaft rod.

Preferably, the spindle head is connected with the spindle rod through threads.

Furthermore, a plurality of wrench grooves are formed in the end portion of the spindle head.

Preferably, the top of the clamping hole is provided with a guiding conical surface or a guiding arc surface.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of main shaft chuck has improved elasticity through increasing a plurality of elastic tanks, and then makes the chuck expand easily, and convenient automatic change is polished head, still presss from both sides tight groove through the extension and increases elasticity to increased a plurality of grooves of holding tightly in inside, improved frictional force, can guarantee to polish reliable the clamp of head tightly.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged partial cross-sectional view;

fig. 4 is a top view of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 4, a spindle chuck includes a spindle rod 1 and a spindle head 2, the spindle head 2 is located at the top of the spindle rod 1 and is of an integral structure with the spindle rod 1, the spindle head 2 is provided with clamping conical surfaces 22, clamping holes 21 and clamping grooves 23, the clamping conical surfaces 22 are arranged at the outer side of the spindle head 2, the clamping holes 21 are arranged on an axis, the clamping grooves 23 are annularly arrayed along the axis and are six, and the clamping grooves 23 are communicated with the clamping conical surfaces 22 and the clamping holes 21. The main shaft rod 1 is provided with a shaft hole 11 and a plurality of elastic grooves 24, the shaft hole 11 is a through hole, the shaft hole 11 is communicated with the clamping hole 21, and the diameter of the shaft hole 11 is smaller than that of the clamping hole 21. The elastic groove 24 is located below the clamping tapered surface 22 and communicates with the clamping groove 23. The elastic groove 24 is an annular groove, and the elastic groove 24 reduces the strength of the spindle head 2, so that the elasticity is improved, and the spindle head 2 can be opened and closed more smoothly.

Wherein, the length of the clamping groove 23 is larger than the depth of the clamping hole 21, and the clamping groove 23 is communicated with the shaft hole 11, thereby further increasing the elasticity.

The top of the clamping hole 21 is provided with a guiding conical surface or a guiding arc surface 27, so that a grinding rod or a tool shank can be conveniently inserted.

Example two

As shown in fig. 1 to 4, on the basis of the first embodiment, the clamping hole 21 is provided with a plurality of holding grooves 25, the holding grooves 25 are annular grooves and are arranged in an array along an axis, and the holding grooves 25 are arranged opposite to the clamping conical surface 22. The holding groove 25 can deform the surface of the polishing rod or the tool shank, so that friction is improved, reliable clamping is guaranteed, and the polishing head and the tool rotate according to the spindle chuck without relative rotation or axial movement.

The holding groove 25 and the clamping conical surface 22 are arranged oppositely, so that the holding groove 25 is positioned at the position with the maximum stress, and reliable holding is ensured.

EXAMPLE III

As shown in fig. 1 to 4, in any of the above embodiments, the spindle head 2 is screwed to the spindle shaft 1.

Be equipped with the threaded rod on the main shaft head 2, the tip of main shaft rod 1 is equipped with the screw hole, and the threaded rod of main shaft head 2 is installed on the screw hole of main shaft rod 1, and threaded connection conveniently changes the main shaft head 2 of different specifications, and then the head or the cutter of polishing of the different specifications of convenient to use, only need during the use twist off main shaft head 2 can, need not to change whole main shaft, very big improvement the convenience of change, it is more convenient to use.

Four or six wrench grooves 26 are arranged at the end part array of the spindle head 2, and the wrench grooves 26 facilitate the wrench to disassemble the spindle head 2.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a main shaft chuck, includes main shaft pole (1) and main shaft head (2), main shaft head (2) are located the tip of main shaft pole (1), be equipped with on main shaft head (2) and press from both sides tight conical surface (22), press from both sides tight hole (21) and a plurality of tight groove (23) of clamp, press from both sides tight groove (23) ring array and set up, and with press from both sides tight conical surface (22) with it communicates with each other to press from both sides tight hole (21), its characterized in that, be equipped with a plurality of elastic groove (24) on main shaft pole (1), elastic groove (24) are located press from both sides the below of tight conical surface (22), and with it communicates with each other to press from both sides tight groove (23).

2. A spindle chuck according to claim 1, characterised in that the clamping bore (21) is provided with a plurality of gripping grooves (25).

3. A spindle chuck according to claim 2, wherein said gripping groove (25) is disposed opposite to said clamping taper (22).

4. A spindle chuck according to any one of claims 1 to 3, characterised in that the clamping groove (23) has a length which is greater than the depth of the clamping bore (21) and which communicates with the axial bore (11) of the spindle shaft (1).

5. A spindle chuck according to any one of claims 1 to 3, wherein the spindle head (2) is screwed to the spindle shaft (1).

6. A spindle chuck according to claim 5, characterized in that the end of the spindle head (2) is provided with a number of wrench grooves (26).

7. A spindle chuck according to any one of claims 1 to 3, characterized in that the top of the clamping hole (21) is provided with a lead-in conical surface or a lead-in circular arc surface (27).