CN220592292U

CN220592292U - ER chuck

Info

Publication number: CN220592292U
Application number: CN202322254071.1U
Authority: CN
Inventors: 牛文宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-03-15
Anticipated expiration: 2033-08-21

Abstract

The utility model discloses an ER chuck which is arranged on a main shaft and is pressed by an ER chuck nut, and comprises a chuck main body, wherein a through hole which extends along the axial direction and is used for inserting a drill bit is formed in the middle of the chuck main body; the one section of chuck main part is equipped with a plurality of axial first logical grooves that extend, first logical groove will the through-hole inner wall is linked together with chuck main part outer wall, the other end of chuck main part is equipped with a plurality of second logical grooves that extend along the axial, the second logical groove will the through-hole inner wall is linked together with chuck main part outer wall, be equipped with a plurality of annular lug on the through-hole inner wall. The utility model has the function of increasing clamping stress and can improve the stability of the installation of the drill bit, thereby ensuring good machining precision.

Description

ER chuck

Technical Field

The utility model belongs to the technical field of ER clamps, and particularly relates to an ER chuck.

Background

The ER chuck is a cylindrical clamp used for being arranged on a main shaft of a drilling, tapping, milling or machining center and used for fastening a drilling and tapping tool or a milling tool, and is also called an ER chuck. The fixing and locking device can also be used for fixing and reinforcing parts to be modified.

The ER chuck is usually arranged at the outer end of the main shaft, after a cutter or a processed part is placed in the ER chuck, the chuck is pressed in the main shaft through an ER fixing nut, the common ER fixing nut is provided with an internal thread, an oil external thread is arranged on the main shaft, and the ER fixing nut is in threaded connection with the main shaft and sleeved outside the main shaft. The ER chuck has the defects of insufficient clamping stress due to overlong use time of the drill bit or the chuck, so that the possibility of radial runout of the drill bit in the ER chuck is increased, and the machining precision is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the ER chuck which has the function of increasing clamping stress and can improve the stability of drill bit installation so as to ensure good machining precision.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an ER chuck is arranged on a main shaft and is pressed by an ER chuck nut, and comprises a chuck main body 1, wherein a through hole 2 which extends along the axial direction and is used for inserting a drill bit is formed in the middle of the chuck main body 1; the one section of the chuck main body 1 is provided with a plurality of first through grooves 3 which extend in the axial direction, the inner wall of the through hole 2 is communicated with the outer wall of the chuck main body 1 by the first through grooves 3, the other end of the main body of the chuck main body 1 is provided with a plurality of second through grooves 4 which extend in the axial direction, the inner wall of the through hole 2 is communicated with the outer wall of the chuck main body 1 by the second through grooves 4, and a plurality of annular convex blocks 5 are arranged on the inner wall of the through hole 2.

Through adopting above-mentioned technical scheme, set up a plurality of annular lug 5 in the through-hole 2 of chuck main part 1, reduced the centre gripping area, strengthened clamping stress, prevent that the drill bit from radially jumping in the ER chuck, guaranteed the precision of processing.

The utility model is further provided with: the annular protruding block 5 is welded or integrally arranged on the inner wall of the through hole 2.

Through adopting above-mentioned technical scheme, welded setting mode has reduced the degree of difficulty of processing, practices thrift the cost, and machining precision has been guaranteed to the setting mode of integral type.

The utility model is further provided with: the circular protruding block 5 is provided with a round corner 6.

Through adopting above-mentioned technical scheme, be provided with fillet 6 and let the drill bit can not be scratched wearing and tearing at the in-process of dismouting, play the guard action to the drill bit.

The utility model is further provided with: a plurality of first annular grooves 7 are uniformly formed in the periphery of the chuck body 1 along the axial direction.

By adopting the technical scheme: the ER chuck can be more easily contracted and clamped when being pressed, so that the drill bit is prevented from loosening.

The utility model is further provided with: the tail ends of the first through groove 3 and the second barrel groove are provided with round holes 8.

By adopting the technical scheme: can easily clean the scraps left in the through groove.

The utility model is further provided with: the round hole 8 is conical and is perpendicular or inclined to the first through groove 3 and the second through groove 4.

By adopting the technical scheme: the round hole 8 is conical, so that when the cleaning spray gun is used for cleaning, the flow speed is increased, and the chips left in the through groove can be cleaned more easily.

The utility model is further provided with: the circumferential surface of the first through grooves 3 and the circumferential surface of the second through grooves 4 have an overlapping area 9.

By adopting the technical scheme: the ER collet is capable of achieving shrinkage.

The utility model is further provided with: the chuck body 1 is including last awl piece 10 and the lower awl piece 11 that is integral type structure, the axial length of going up awl piece 10 is greater than the axial length of lower awl piece 11, the external diameter of going up awl piece 10 is in the direction that is close to lower awl piece 11 and is increased gradually, the external diameter of lower awl piece 11 is in the direction of keeping away from last awl piece 10 and is reduced gradually, the second annular groove 12 has been seted up to the juncture of going up awl piece 10 and lower awl piece 11.

By adopting the technical scheme: is matched with the main shaft and the ER chuck nut for practical use, and is provided with a second annular groove 12 for preventing interference.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front view of the present utility model;

fig. 3 is a vertical cross-sectional view of the present utility model.

In the drawing, 1, a chuck main body; 2. a through hole; 3. a first through groove; 4. a second through slot; 5. an annular bump; 6. round corners; 7. a first annular groove; 8. a round hole; 9. an overlap region; 10. a cone block is arranged; 11. a lower cone block; 12. and a second annular groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

An ER chuck as shown in figures 1-3, which is arranged on a main shaft and is pressed by an ER chuck nut, comprises a chuck main body 1, wherein the middle part of the chuck main body 1 is provided with a through hole 2 which extends along the axial direction and is used for inserting a drill bit; the one section of chuck main part 1 is equipped with a plurality of axial first logical groove 3, and the quantity of first logical groove 3 is 8 in this embodiment, first logical groove 3 will through-hole 2 inner wall is linked together with chuck main part 1 outer wall, the other end of chuck main part 1 theme is equipped with a plurality of second through-grooves 4 along axial extension, and the quantity of second through-groove 4 is 8 in this embodiment, second through-groove 4 will through-hole 2 inner wall is linked together with chuck main part 1 outer wall, be equipped with a plurality of annular lug 5 on the through-hole 2 inner wall, through adopting above-mentioned technical scheme, set up a plurality of annular lug 5 in the chuck main part 1 through-hole 2, reduced clamping area, strengthened clamping stress, prevented that the drill bit from radially jumping in the chuck ER, guaranteed the precision of processing, annular lug 5 has reduced the degree of difficulty of processing through welding or integrative setting on the through-hole 2 inner wall, practices thrift the cost, and the integrated setting up mode has guaranteed the machining precision, be equipped with fillet 6 on the annular lug 5, prevent to dismouting and wear to the drill bit during the use.

As shown in fig. 1 and 2, the outer periphery of the chuck body 1 is uniformly provided with a plurality of first annular grooves 7 along the axial direction, so that the ER chuck is more easily contracted and clamped when being pressed, the drill bit is prevented from loosening, and the first annular grooves 7 are respectively provided with round corners 6, so that scratches during taking are prevented.

As shown in fig. 2 and 3, the ends of the first through groove 3 and the second through groove 4 are provided with round holes 8, the round holes 8 are conical, when the cleaning spray gun is used for cleaning, the flow speed is increased, the chips left in the through groove can be cleaned more easily, and the round holes 8 are conical and can be perpendicular to the through groove or inclined to the through groove.

As shown in fig. 3, the circumferential surfaces of the first through grooves 3 and the second through grooves 4 have overlapping areas 9, and the er clamping head can be contracted only by providing the overlapping areas 9.

As shown in fig. 1 and fig. 3, the chuck body 1 includes an upper cone block 10 and a lower cone block 11 which are in an integral structure, the axial length of the upper cone block 10 is greater than that of the lower cone block 11, the outer diameter of the upper cone block 10 gradually increases in the direction close to the lower cone block 11, the outer diameter of the lower cone block 11 gradually decreases in the direction far away from the upper cone block 10, a second annular groove 12 is formed at the junction of the upper cone block 10 and the lower cone block 11, the chuck body is practical in cooperation with a spindle and an ER chuck nut, the second annular groove 12 is formed, interference is prevented, and one section of the through hole 2 close to the lower cone block 11 is set into a square hole for being attached to a drill bit on the market more tightly when in use.

Claims

1. An ER chuck is arranged on a main shaft and is pressed by an ER chuck nut, and comprises a chuck main body (1), wherein a through hole (2) which extends along the axial direction and is used for inserting a drill bit is formed in the middle of the chuck main body (1); the method is characterized in that: the one section of chuck main part (1) is equipped with a plurality of axial first logical groove (3), first logical groove (3) will through-hole (2) inner wall is linked together with chuck main part (1) outer wall, the other end of chuck main part (1) is equipped with a plurality of second through-grooves (4) along axial extension, second through-groove (4) will through-hole (2) inner wall is linked together with chuck main part (1) outer wall, be equipped with a plurality of annular lug (5) on through-hole (2) inner wall.

2. The ER collet as defined in claim 1, wherein: the annular protruding block (5) is welded or integrally arranged on the inner wall of the through hole (2).

3. The ER collet as defined in claim 1, wherein: and round corners (6) are arranged on the annular convex blocks (5).

4. An ER collet as defined in claim 1, wherein: a plurality of first annular grooves (7) are uniformly formed in the periphery of the chuck main body (1) along the axial direction.

5. An ER collet as defined in claim 1, wherein: round holes (8) are formed in the tail ends of the first through groove (3) and the second barrel groove.

6. An ER collet as defined in claim 5, wherein: the round hole (8) is conical and is perpendicular or inclined to the first through groove (3) and the second through groove (4).

7. An ER collet as defined in claim 1, wherein: the circumferential surfaces of the first through grooves (3) and the second through grooves (4) are provided with overlapping areas (9).

8. An ER collet as defined in claim 1, wherein: the chuck body (1) is including last awl piece (10) and lower awl piece (11) that are integral type structure, the axial length of going up awl piece (10) is greater than the axial length of lower awl piece (11), the external diameter of going up awl piece (10) is in the direction of being close to lower awl piece (11) increase gradually, the external diameter of lower awl piece (11) is in the direction of keeping away from last awl piece (10) decrease gradually, second annular groove (12) have been seted up in the juncture of last awl piece (10) and lower awl piece (11).