CN216226988U

CN216226988U - Core shaft

Info

Publication number: CN216226988U
Application number: CN202120106614.3U
Authority: CN
Inventors: 苏朝辉; 徐朋朋; 李晓娜; 沙恒; 张文悦
Original assignee: Shandong Huayu University of Technology
Current assignee: Shandong Huayu University of Technology
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2022-04-08
Anticipated expiration: 2031-01-15

Abstract

A mandrel comprises a bottom plate, wherein a clamping device is arranged on the bottom plate and connected with a mandrel device, the mandrel device comprises a taper shaft A and a taper shaft B, the taper shaft A and a square column are arranged at the diameter end of the large end of the taper shaft A, and a screw is arranged at the diameter end of the small end of the taper shaft A; taper shaft B, internal thread setting are in taper shaft B tip diameter end, and the cylinder setting is in taper shaft B main aspects diameter end, the effectual low and poor problem of product quality of production efficiency of having solved.

Description

Core shaft

Technical Field

The utility model relates to the field of machine tool manufacturing, in particular to a mandrel.

Background

The mandrel is one of the most common clamps for ensuring the coaxiality in a lathe, the mandrel is concentric with the main shaft, the coaxiality of an inner hole and an outer circle of a workpiece is required to be high, the inner hole can be firstly lathed after a tool is turned, and the clearance between the mandrel and the inner hole is generally 0.01-0.02 MM. The workpiece is penetrated on the mandrel, one end of the workpiece is screwed by a nut, and if the mandrel is long or the excircle machining amount is large, the workpiece can be tightly pressed by a tailstock center. However, when long cylinder parts are machined, part vibration often occurs, and production efficiency and product quality are reduced.

SUMMERY OF THE UTILITY MODEL

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the mandrel which effectively solves the problems of low production efficiency and poor product quality.

In order to achieve the purpose, the utility model adopts the following technical scheme: a mandrel comprises a bottom plate, wherein a clamping device is arranged on the bottom plate and connected with a mandrel device, the mandrel device comprises a taper shaft A and a taper shaft B, a square column is arranged at the diameter end of the large end of the taper shaft A, and a screw is arranged at the diameter end of the small end of the taper shaft A; the internal thread sets up in tapering axle B tip diameter end, and the cylinder setting is served at tapering axle B main aspects diameter, and tapering axle A and tapering axle B main aspects diameter are served and is established and be connected with the core that rises.

Furthermore, the screw rod at the small end diameter end of the taper shaft A and the internal thread at the small end diameter end of the taper shaft B are in threaded connection.

Furthermore, the square column, the taper shaft A and the screw are integrally formed.

Furthermore, the cylinder, the internal thread and the taper shaft B are integrally formed.

Further, the expansion core is made of spring steel materials.

Further, clamping device is including the hand shaft, and the hand shaft rigid coupling has positive threaded rod and the reverse threaded rod that is connected with the positive threaded rod, and the positive threaded rod meshing has the fixed cover of second, and the reverse threaded rod meshing has first fixed cover, all is equipped with the stopper with bottom plate sliding connection on first fixed cover and the fixed cover of second.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device can improve the production efficiency and the product quality;

2. the expansion core is made of spring steel materials, so that the expansion and the compression are convenient;

3. the whole length of this device assembly back is longer, is fit for processing long section of thick bamboo class part, can avoid the vibrations phenomenon that appears in the processing simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a diagram illustrating the effect of the present invention;

FIG. 3 is a working diagram of the present invention;

FIG. 4 is a block diagram 01 of the present invention;

FIG. 5 is a block diagram 02 of the present invention;

FIG. 6 is a schematic structural view of a clamping device of the present invention;

in the figure: 1. the device comprises a bottom plate, 2 parts, 3 cylinders, 4 expansion cores, 5 square columns, 6 taper shafts A and 7, taper shafts B and 8, a screw, 9 hand shafts, 10 positive screw rods, 11 reverse screw rods, 12 first fixing sleeves, 13 second fixing sleeves.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The standard parts used in the utility model can be purchased from the market, can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, the adopted circuit connection is the conventional type in the prior art, and meanwhile, in order to clearly express the connection relation and the working principle of each component, the accompanying drawings of the specification are arranged and drawn in a mode of a simplified diagram of mechanism movement, and the detailed description is not repeated.

1-6, comprising a bottom plate 1, wherein the bottom plate 1 is provided with a clamping device, the clamping device is connected with a mandrel device, the mandrel device comprises a taper shaft A6 and a taper shaft B7, a square column 5 is arranged at the diameter end of the large end of the taper shaft A6, and a screw 8 is arranged at the diameter end of the small end of the taper shaft A6; the internal thread sets up in taper axle B7 tip diameter end, and the cylinder 3 sets up in taper axle B7 main aspects diameter end, and the taper axle A6 overlaps to be connected with on the taper axle B7 main aspects diameter end and rises core 4.

As shown in FIG. 4, the screw at the small end diameter end of the taper shaft A6 is in threaded connection with the internal thread at the small end diameter end of the taper shaft B7.

As shown in fig. 3 and 4, the square column 5, the taper axis A6, and the screw 8 are integrally formed.

As shown in fig. 3 and 4, the cylinder 3, the female screw, and the taper shaft B7 are integrally formed.

As shown in fig. 3 and 5, the expansion core 4 is made of spring steel material.

As shown in fig. 1 and 6, the clamping device comprises a hand shaft 9, a positive threaded rod 10 and a reverse threaded rod 11 connected with the positive threaded rod 10 are fixedly connected with the hand shaft 9, a second fixing sleeve 13 is meshed with the positive threaded rod 10, a first fixing sleeve 12 is meshed with the reverse threaded rod 11, and limiting blocks slidably connected with the bottom plate 1 are arranged on the first fixing sleeve 12 and the second fixing sleeve 13.

The working process of the utility model is as follows: when the clamping device is used, firstly, the hand shaft 9 is controlled to act, the hand shaft 9 drives the positive threaded rod 10 and the reverse threaded rod 11 to rotate simultaneously, the positive threaded rod 10 drives the second fixing sleeve 13 to move, the reverse threaded rod 11 drives the first fixing sleeve 12 to move oppositely, clamping and fixing of the cylinder 3 are achieved, the expansion core 4 is installed firstly, then the part 2 is installed, the square column 5 is screwed by a wrench to clamp the part 2, and finally, the center point is used for propping against the center hole of the axis of the square column 5 or the cylinder 3 to achieve clamping before machining of the part 2.

Claims

1. A mandrel, characterized by: the clamping device is arranged on the bottom plate (1) and connected with a mandrel device, the mandrel device comprises a taper shaft A (6) and a taper shaft B (7), a square column (5) is arranged at the diameter end of the large end of the taper shaft A (6), and a screw (8) is arranged at the diameter end of the small end of the taper shaft A (6); the internal thread sets up in tapering axle B (7) tip diameter end, and cylinder (3) set up in tapering axle B (7) main aspects diameter end, and the cover is established on tapering axle A (6) and tapering axle B (7) main aspects diameter end and is connected with core (4) that rises.

2. A mandrel as claimed in claim 1 wherein: the screw rod at the small end diameter end of the taper shaft A (6) is in threaded connection with the internal thread at the small end diameter end of the taper shaft B (7).

3. A mandrel as claimed in claim 1 wherein: the square column (5), the taper shaft A (6) and the screw (8) are integrally formed.

4. A mandrel as claimed in claim 1 wherein: the cylinder (3), the internal thread and the taper shaft B (7) are integrally formed.

5. A mandrel as claimed in claim 1 wherein: the expansion core (4) is made of spring steel materials.

6. A mandrel as claimed in claim 1 wherein: clamping device is including hand shaft (9), and hand shaft (9) rigid coupling has positive threaded rod (10) and reverse threaded rod (11) that are connected with positive threaded rod (10), and positive threaded rod (10) meshing has the fixed cover of second (13), and reverse threaded rod (11) meshing has first fixed cover (12), all is equipped with on the fixed cover of first fixed cover (12) and second (13) with bottom plate (1) sliding connection's stopper.