CN216371232U

CN216371232U - Quick replacement structure for forward pushing chuck

Info

Publication number: CN216371232U
Application number: CN202121819289.1U
Authority: CN
Inventors: 陈龙
Original assignee: Yancheng Hengyou Precision Machinery Co ltd
Current assignee: Yancheng Hengyou Precision Machinery Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-04-26
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses a quick replacement structure of a forward pushing chuck, which comprises a mounting base, a sliding sleeve and an elastic chuck, wherein the mounting base is a cylindrical structure with a first step at one end; the sliding sleeve is arranged in the mounting base in a sliding mode, the sliding sleeve is of a cylindrical structure, and a first wedge-shaped surface is arranged on the inner wall of the sliding sleeve; the elastic chuck is arranged in the sliding sleeve, a clamping hole is formed in one end of the elastic chuck, a second wedge-shaped surface is arranged on the outer wall, close to one end of the clamping hole, of the elastic chuck, a positioning pin is further arranged on the forward pushing chuck, a first positioning hole, a second positioning hole and a third positioning hole are formed in the side wall of the mounting base, the sliding sleeve and the elastic chuck respectively, and the positioning pin is inserted into the first positioning hole, the second positioning hole and the third positioning hole in a penetrating mode. Replace original gland structure through bolt and locating hole, avoided the gland to warp and lead to the collet card to die, made things convenient for the change to the preceding collet that pushes away, reduced the maintenance degree of difficulty, improved production efficiency.

Description

Quick replacement structure for forward pushing chuck

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a quick replacement structure of a forward push chuck.

Background

In the machining process of a workpiece, a clamp is usually used, a raw material or blank workpiece to be machined is clamped on a main shaft by the clamp, and the raw material or blank workpiece is driven to rotate by the main shaft, so that the machining operation of the workpiece is realized. The forward-push type chuck is one of the common clamps at present, is convenient to clamp, and can meet the clamping requirements of tools such as a plurality of workpieces or drills.

However, in the process of implementing the technical solution of the present invention in the embodiment of the present application, the inventors of the present application find that the above-mentioned technology has at least the following problems:

the current preceding chuck that pushes away fixes collet on the mounting base through the gland that has the internal thread, however, because the gland sets up the screwed wall body thinly, long-time pressurized or the collision takes place to warp the back, easily leads to the gland to pull down from the mounting base, is unfavorable for the change of chuck and the maintenance in later stage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a quick replacement structure of a forward-push chuck, which aims to solve the problems mentioned in the background technology and is realized by the following technical scheme:

a quick replacement structure for a forward-push chuck comprises a mounting base, a sliding sleeve and an elastic chuck, wherein the mounting base is of a cylindrical structure, one end of the mounting base is provided with a first step, and a connecting hole is formed in the first step; the sliding sleeve is arranged in the mounting base in a sliding mode, the sliding sleeve is of a cylindrical structure, and a first wedge-shaped surface is arranged on the inner wall of one end, away from the first step, of the sliding sleeve; the elastic chuck is arranged in the sliding sleeve, a clamping hole is formed in one end, away from the first step, of the elastic chuck, a second wedge-shaped surface is arranged on the outer wall, close to one end of the clamping hole, of the elastic chuck, a positioning pin is further arranged on the forward pushing chuck, a first positioning hole, a second positioning hole and a third positioning hole are formed in the side wall of the mounting base, the sliding sleeve and the elastic chuck respectively, the positioning pin is inserted into the first positioning hole, the second positioning hole and the third positioning hole, and the second positioning hole is extended towards the first step.

Further, a second step is arranged in the first positioning hole, and the positioning pin is installed in the first positioning hole through a spring.

Furthermore, the top of the positioning pin is an inclined plane, and one end of the inclined plane close to the first step is higher than one end far away from the first step.

Further, a press ring is arranged on the mounting base, and the press ring can move axially along the mounting base and is used for pressing in/loosening the positioning pin.

Further, a locking bolt is arranged on the pressing ring.

Furthermore, anti-skid stripes are arranged in the clamping holes.

The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:

replace original gland structure through bolt and locating hole, avoided the gland to warp and lead to the collet card to die, made things convenient for the change to the preceding collet that pushes away, reduced the maintenance degree of difficulty, improved production efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a mounting base according to an embodiment of the present application;

FIG. 3 is a schematic view of a sliding sleeve structure according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an embodiment of a collet;

fig. 5 is a partially enlarged view of fig. 1.

In the drawings, there is shown: 1. mounting a base; 11. a first step; 12. connecting holes; 13. a first positioning hole; 14. a second step; 2. a sliding sleeve; 21. a first wedge-shaped face; 22. a pull rod connecting port; 23. a second positioning hole; 3. an elastic collet; 31. a clamping hole; 32. a second wedge-shaped face; 33. a third positioning hole; 34. anti-skid stripes; 4. positioning pins; 5. a gland; 6. and locking the bolt.

Detailed Description

For better understanding of the above technical solutions, the following detailed descriptions will be made in conjunction with the drawings and the detailed description of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, the quick replacement structure for the forward-push chuck comprises a mounting base 1, a sliding sleeve 2 and an elastic chuck 3, wherein the mounting base 1 is a cylindrical structure with a first step 11 at one end, and a connecting hole 12 is formed in the first step 11; the sliding sleeve 2 is arranged in the mounting base 1 in a sliding mode, the sliding sleeve 2 is of a cylindrical structure, and a first wedge-shaped surface 21 is arranged on the inner wall of one end, away from the first step 11, of the sliding sleeve 2; the elastic chuck 3 is arranged in the sliding sleeve 2, a clamping hole 31 is formed in one end, far away from the first step 11, of the elastic chuck 3, a second wedge-shaped surface 32 is arranged on the outer wall, close to one end of the clamping hole 31, of the elastic chuck 3, a positioning pin 4 is further arranged on the forward pushing chuck, a first positioning hole 13, a second positioning hole 23 and a third positioning hole 33 are formed in the side wall of the installation base 1, the sliding sleeve 2 and the elastic chuck 3 respectively, the positioning pin 4 is inserted into the first positioning hole 13, the second positioning hole 23 and the third positioning hole 33 in a penetrating mode, and the second positioning hole 23 is extended towards the direction of the first step 11.

Specifically, as shown in fig. 1 and 2, the mounting base 1 is a hollow cylindrical structure, one end of the mounting base 1 is provided with a first step 11, the first step 11 is provided with a plurality of connecting holes 12, the connecting holes 12 are uniformly distributed on the first step 11 along the circumferential direction, and the mounting base 1 is connected with a spindle of a lathe through the connecting holes 12; first locating hole 13 has been seted up to the side of mounting base 1, and first locating hole 13 matches with locating pin 4, is provided with second step 14 in the first locating hole 13.

Specifically, as shown in fig. 1 and fig. 3, the sliding sleeve 2 is a cylindrical structure, the sliding sleeve 2 is slidably mounted in the mounting base 1, a first wedge surface 21 is arranged on an inner wall of one end of the sliding sleeve 2, which is far away from the first step 11, and the first wedge surface 21 gradually increases the inner diameter of the sliding sleeve 2 as the sliding sleeve approaches the port; a pull rod connecting port 22 is formed in one end, away from the first wedge-shaped surface 21, of the sliding sleeve 2, and a pull rod (not shown) is connected with the sliding sleeve 2 through the pull rod connecting port 22 and used for pushing the sliding sleeve 2 to move along the inner wall of the mounting base 1; the side wall of the sliding sleeve 2 is provided with a second positioning hole 23, and the length of the second positioning hole 23 extends towards the pull rod connecting port 22 to provide a moving space for the sliding sleeve 2.

Specifically, as shown in fig. 1 and 4, the collet 3 is disposed in the sliding sleeve 2, a clamping hole 31 is disposed at one end of the collet 3 away from the first step 11, and elastic cracks are disposed around the clamping hole 31 to make the collet 3 collapsible; preferably, anti-slip stripes 34 are arranged in the clamping holes 31 to increase the friction force of clamping and avoid the clamping piece from slipping.

The outer wall of one end of the elastic chuck 3 close to the clamping hole 31 is provided with a second wedge-shaped surface 32, and the outer diameter of the elastic chuck is gradually increased along with the approach of the second wedge-shaped surface 32 to the port; the side wall of the elastic chuck 3 is provided with a third positioning hole 33, the third positioning hole 33 is matched with the positioning pin 4, and the positioning pin 4 sequentially passes through the first positioning hole 13, the second positioning hole 23 and the third positioning hole 33 to relatively fix the elastic chuck 3 and the mounting base 1.

As shown in fig. 1 and 5, the positioning pin 4 is installed in the first positioning hole 13 through a spring, the mounting base 1 is provided with a press ring 5, and the press ring 5 can move axially along the mounting base 1 for pressing in/releasing the positioning pin 4; preferably, the top of the positioning pin 4 is an inclined plane, and one end of the inclined plane close to the first step 11 is higher than one end far away from the first step 11, so that the pressing ring 5 can press the positioning pin 4 into the third positioning hole of the collet 3 conveniently.

Preferably, be provided with locking bolt 6 on the clamping ring 5, both can avoid rotating in-process clamping ring 5 through locking bolt 6 and drop, also can compress tightly locating pin 4 simultaneously, avoid locating pin 4 to rock.

The working principle of the utility model is as follows: when the installation is carried out, the elastic chuck 3 is inserted into the sliding sleeve 2, the first positioning hole, the second positioning hole and the third positioning hole are positioned on the same straight line, the pressing ring is moved leftwards, the positioning pin is pressed into the third positioning hole, the locking bolt is screwed, the elastic chuck is fixed relative to the installation base at the moment, and the sliding sleeve can be pushed rightwards by the part, which is extended leftwards, of the second positioning hole, so that the elastic chuck is clamped; when the elastic chuck is detached, the locking bolt is loosened, the pressing ring is moved to the right, and the positioning pin is lifted out of the third positioning hole under the elastic force of the spring, so that the elastic chuck can be taken down.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick replacement structure for a forward-push chuck comprises a mounting base, a sliding sleeve and an elastic chuck, wherein the mounting base is of a cylindrical structure, one end of the mounting base is provided with a first step, and a connecting hole is formed in the first step; the sliding sleeve is arranged in the mounting base in a sliding mode, the sliding sleeve is of a cylindrical structure, and a first wedge-shaped surface is arranged on the inner wall of one end, away from the first step, of the sliding sleeve; the collet sets up in the sliding sleeve, the collet is kept away from the one end of first step is provided with the centre gripping hole, the collet is close to the outer wall of centre gripping hole one end sets up second wedge face, its characterized in that: the front push chuck is further provided with a positioning pin, the mounting base, the sliding sleeve and the side wall of the elastic chuck are respectively provided with a first positioning hole, a second positioning hole and a third positioning hole, the positioning pin is inserted into the first positioning hole, the second positioning hole and the third positioning hole, and the second positioning hole is extended towards the first step.

2. The quick change structure of a forward chuck according to claim 1, wherein the first positioning hole is provided with a second step, and the positioning pin is mounted in the first positioning hole by a spring.

3. The quick change structure of the forward chuck as claimed in claim 2, wherein the top of the positioning pin is a slope, and the end of the slope close to the first step is higher than the end far away from the first step.

4. The quick change structure of the forward chuck as claimed in claim 2, wherein the mounting base is provided with a press ring, and the press ring can move axially along the mounting base for pressing/releasing the positioning pin.

5. The quick change structure of the forward chuck as claimed in claim 4, wherein the pressing ring is provided with a locking bolt.

6. The quick change structure of the forward chuck as claimed in claim 1, wherein the clamping hole is provided with anti-slip stripes.