CN211220434U

CN211220434U - Mandrel positioning device

Info

Publication number: CN211220434U
Application number: CN201921954272.XU
Authority: CN
Inventors: 高飞; 李新; 和玉洁; 韩凤祥
Original assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Current assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-11
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a mandrel positioning device, including the bottom plate, the dabber is placed on the bottom plate and is connected both through clamp plate and the screw that a pair of symmetry set up, and the dabber is outside to the location utensil cover, and lower extreme and bottom plate lock, and the dabber upper end passes the centre bore of location utensil top surface. The utility model discloses can realize not changing under the prerequisite of dabber structure, realize fast, the accurate positioning of dabber through one-time assembly, reduce the degree of difficulty of dabber location, save a large amount of manpower resources, be applicable to the dabber location of dabber boss at certain size within range change.

Description

Mandrel positioning device

Technical Field

The utility model belongs to the positioner field, concretely relates to dabber positioner.

Background

The core shaft is a rotary part, has high dimensional precision, is mainly used for assembling with other parts, plays a role in positioning other parts, and is widely applied to precision test devices. The positioning and mounting precision of the mandrel is guaranteed, and the assembly precision of the whole testing device is guaranteed. Usually, the mandrel needs to be positioned in the form of processing bolt holes on the mandrel, the mandrel to be assembled can meet the requirement of positioning accuracy only by detecting and assembling for many times, the assembling efficiency is low, no device can complete the positioning of high accuracy and high efficiency of the mandrel part without changing the structure of the mandrel at present, and therefore a positioning device with high accuracy and high efficiency suitable for the mandrel is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a provide in order to overcome the shortcoming that exists among the prior art, its purpose provides a dabber positioner.

The utility model discloses a realize through following technical scheme:

a mandrel positioning device comprises a bottom plate, a mandrel is placed on the bottom plate and is connected with the bottom plate through a pair of pressing plates and screws which are symmetrically arranged, a positioning tool is covered outside the mandrel, the lower end of the positioning tool is buckled with the bottom plate, and the upper end of the mandrel penetrates through a center hole in the top surface of the positioning tool.

In the above technical solution, the bottom plate is a disk-shaped structure, and four screw holes are formed in the middle of the bottom plate and are distributed in a rectangular shape. The screw hole on the bottom plate is used for connecting with the pressure plate;

in the above technical scheme, the top surface of the pressing plate is provided with two vertically arranged through holes, and the side wall of the upper end of the pressing plate extends outwards to form a pressing plate boss.

In the above technical scheme, the positioning tool is a hollow stepped shaft structure with a small top and a large bottom, a positioning groove is formed on the bottom surface, and a central hole is formed on the top surface.

In the above technical solution, the inner diameter of the positioning groove is matched with the outer diameter of the bottom plate.

In the above technical solution, the circumferential wall of the small diameter end of the positioning tool is provided with a symmetrically arranged window.

In the above technical scheme, the hole wall of the central hole extends upwards to form a convex ring.

The utility model has the advantages that:

the utility model provides a mandrel positioning device can realize not changing under the prerequisite of dabber structure, realizes quick, the accurate positioning of dabber through once assembling, has reduced the degree of difficulty of dabber location, has saved a large amount of manpower resources, is applicable to the dabber location of dabber boss at certain size within range change.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view (oblique view) of the positioning tool of the present invention;

FIG. 3 is a schematic structural view (front view) of the positioning tool of the present invention;

FIG. 4 is a schematic structural diagram of the middle bottom plate of the present invention;

fig. 5 is a schematic structural view of the central spindle of the present invention;

fig. 6 is a schematic structural diagram of the middle pressing plate of the present invention.

Wherein:

1 mandrel 2 bottom plate

3 positioning tool 4 pressing plate

5 screw 6 positioning groove

7 center positioning hole 8 screw hole

9 mandrel boss and 10 pressing plate boss

11 via 12 fenestrations

13 convex ring.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following description is further provided with reference to the drawings of the specification and by means of the specific embodiments to describe the technical solution of the present invention.

As shown in fig. 1, a mandrel positioning device comprises a bottom plate 2, a mandrel 1 is placed on the bottom plate 2 and is connected with the bottom plate 2 through a pair of pressing plates 4 and screws 5 which are symmetrically arranged, a positioning tool 3 is covered outside the mandrel 1, the lower end of the positioning tool is buckled with the bottom plate 2, and the upper end of the mandrel 1 penetrates through a center hole 7 on the top surface of the positioning tool 3.

As shown in fig. 4, the bottom plate 2 is a disk-shaped structure, and four screw holes 8 are formed in the middle of the bottom plate and are distributed in a rectangular shape. The screw hole on the bottom plate is used for connecting with the pressure plate;

as shown in fig. 6, two vertically disposed through holes 11 are formed on the top surface of the pressing plate 4, and the upper side wall thereof extends outwards to form a pressing plate boss 10. The pressing plate 4 is of an inverted L-shaped structure. The clamp plate boss 10 is arranged above the mandrel boss, and the screw 5 penetrates through the hole 11 and the screw hole 8 to fixedly connect the clamp plate 4 with the base plate 2, so that the mandrel 1 is fixed.

As shown in fig. 2 and 3, the positioning tool 3 is a hollow stepped shaft structure with a small top and a large bottom, a positioning groove 6 is formed on the bottom surface, and a central hole 7 is formed on the top surface. The inner diameter of the positioning groove 6 is matched with the outer diameter of the bottom plate 2. The circumference wall of the small diameter end of the positioning tool 3 is provided with a symmetrically arranged window 12. The hole wall of the central hole 7 extends upwards to form a convex ring 13.

As shown in fig. 5, the utility model discloses the object dabber 1 of using is the type of falling T ladder axle construction, and the lower extreme forms dabber boss 9.

The utility model discloses a use method:

placing the soleplate 2 horizontally;

(ii) placing the mandrel 1 on the base plate 2;

(iii) passing the upper end of the mandrel through the central bore 7 of the fixture 3;

(iv) moving the positioning tool 3 and the mandrel 1 together until the groove wall of the positioning groove 6 of the positioning tool 3 is completely attached to the outer circumferential wall of the upper end of the bottom plate 2;

(v) placing the press plate bosses 10 of the two press plates 4 on the mandrel bosses 9, moving the press plates 4, and aligning the through holes 11 on the press plates 4 with the screw holes 8 on the base plate 2;

(vi) connecting the base plate 2 with the pressing plate 4 by using a screw 5 to fix the mandrel 1;

(vii) the positioning tool 3 is vertically taken down upwards, and the positioning of the mandrel 1 is completed.

The fast and accurate positioning of the mandrel is realized through one-time assembly, the difficulty of mandrel positioning is reduced, and a large amount of manpower resources are saved.

The utility model discloses can realize not changing under the prerequisite of dabber structure, realize fast, the accurate positioning of dabber through one-time assembly, reduce the degree of difficulty of dabber location, save a large amount of manpower resources, be applicable to the dabber location of dabber boss at certain size within range change.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.

Claims

1. A mandrel positioning device is characterized in that: including bottom plate (2), dabber (1) is placed on bottom plate (2) and is connected both through clamp plate (4) and screw (5) that a pair of symmetry set up, and dabber (1) outside is located in cover to location utensil (3), and lower extreme and bottom plate (2) lock, and centre bore (7) of location utensil (3) top surface are passed to dabber (1) upper end.

2. The mandrel positioning apparatus of claim 1 wherein: the bottom plate (2) is of a disc-shaped structure, four screw holes (8) which are distributed in a rectangular shape are formed in the middle of the bottom plate, and the screw holes (8) in the bottom plate (2) are used for being connected with the pressing plate (4).

3. The mandrel positioning apparatus of claim 1 wherein: two vertically-arranged through holes (11) are formed in the top surface of the pressing plate (4), and the side wall of the upper end of the pressing plate extends outwards to form a pressing plate boss (10).

4. The mandrel positioning apparatus of claim 1 wherein: the positioning tool (3) is of a hollow stepped shaft structure with a small upper part and a large lower part, a positioning groove (6) is formed on the bottom surface, and a central hole (7) is formed on the top surface.

5. The mandrel positioning apparatus of claim 4 wherein: the inner diameter of the positioning groove (6) is matched with the outer diameter of the bottom plate (2).

6. The mandrel positioning apparatus of claim 4 wherein: the circumference wall of the small diameter end of the positioning tool (3) is provided with symmetrically arranged windows (12).

7. The mandrel positioning apparatus of claim 4 wherein: the hole wall of the central hole (7) extends upwards to form a convex ring (13).