CN216858819U

CN216858819U - Crimping tool for nut positioning assembly of front bracket of engine

Info

Publication number: CN216858819U
Application number: CN202220367640.6U
Authority: CN
Inventors: 冯宇; 罗踔涛
Original assignee: Wuhan Hengchuangda Auto Parts Co ltd
Current assignee: Wuhan Hengchuangda Auto Parts Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-01
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a crimping tool for a nut positioning component of a front bracket of an engine, which comprises a base, a positioning lower die, a movable upper die, a plurality of nut positioning components and a bracket nut, wherein the positioning lower die is arranged on the base; the base is fixedly arranged relative to the ground; the positioning lower die is arranged at one end of the base far away from the ground; the end face of the positioning lower die, which is far away from the ground, is provided with a step-shaped positioning part; each nut positioning component is arranged in the positioning part of the lower positioning die and is abutted against the surface of the lower positioning die; the nut positioning component is provided with a nut caulking groove; a bracket nut is arranged in the nut caulking groove; the movable upper die is parallel to and fixedly arranged relative to the base and is provided with a movable part, and the movable part is close to the positioning part along the vertical direction and vertically presses the bracket nut into the nut caulking groove.

Description

Crimping tool for nut positioning assembly of front bracket of engine

Technical Field

The utility model relates to the field of automobile part manufacturing equipment, in particular to a crimping tool for a nut positioning assembly of a front bracket of an engine.

Background

The front bracket of the automobile engine is a part for placing and fixing the automobile engine, and the front bracket is further connected with an automobile body, so that the engine can be stably supported and fixed. A bracket nut is arranged in the automobile front bracket and used for fastening the engine and the front bracket. Because the mounting position of the bracket nut is located in the unusual direction of the front bracket, the placement and the positioning of the nut at the position are not convenient, and the assembly efficiency of the front bracket and the engine is influenced. During actual installation, a nut positioning assembly with a pre-positioning function can be adopted, so that the positioning and installation of the nut are facilitated, and after the nut is installed, the bracket nut and the nut positioning assembly can be separated from each other.

However, the nut positioning assembly is a non-standard assembly lacking corresponding manufacturing equipment. Therefore, there is a need for an apparatus that efficiently and accurately accomplishes the pre-assembly of a carrier nut with a nut positioning assembly.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides an engine front bracket nut positioning assembly crimping tool capable of quickly and accurately assembling a bracket nut and a nut positioning assembly.

The technical scheme of the utility model is realized as follows: the utility model provides a crimping tool for a nut positioning component of a front bracket of an engine, which comprises a base (1), a positioning lower die (2) and a movable upper die (3);

the base (1) is fixedly arranged relative to the ground;

the positioning lower die (2) is arranged at one end of the base (1) far away from the ground; the end surface of the positioning lower die (2) far away from the ground is provided with at least one step-shaped positioning part (100);

each nut positioning component (4) is provided with a plurality of outer surfaces with different heights; the outer surfaces of the nut positioning components (4) are respectively arranged in the positioning parts (100) of the positioning lower dies (2) and are abutted against different surfaces of the positioning parts (100); a nut caulking groove (200) is arranged on the nut positioning component (4); a bracket nut (5) is arranged in the nut caulking groove (200);

the movable upper die (3) is parallel to and fixedly arranged relative to the base (1), the movable upper die (3) is provided with a movable part, the movable part is close to the positioning part (100) along the vertical direction, and the bracket nut (5) is vertically pressed into the nut caulking groove (200).

On the basis of the technical scheme, preferably, the positioning lower die (2) and the base (1) are relatively fixed, the base (1) at two ends of the positioning lower die (2) in the horizontal length extension direction is respectively provided with a first pressing block (81), and the first pressing block (81) is abutted against the surface of the positioning lower die (2).

On the basis of the technical scheme, preferably, the positioning lower die (2) is connected with the base (1) in a sliding manner; second pressing blocks (82) are respectively arranged on the bases (1) at two ends of the lower positioning die (2) in the horizontal width extending direction, the second pressing blocks (82) are arranged oppositely and at intervals, and a channel for the lower positioning die to slide horizontally is formed between the second pressing blocks (82); a second linear motion mechanism (83) is arranged at the edge of the base (1), the second linear motion mechanism (83) is provided with a push plate (84), and the push plate (84) abuts against the surface of one side, away from the channel, of the positioning lower die (2).

Preferably, the positioning part (100) is provided with a first groove (101) extending along the horizontal direction and a second groove (102) penetrating through the positioning lower die (2) along the horizontal direction; the first groove (101) and the second groove (102) are arranged in an orthogonal mode in the extending direction; the first groove (101) and the second groove (102) are communicated with each other; the depth of the first groove (101) in the vertical direction is different from the depth of the second groove (102) in the vertical direction; the inner surfaces of the first groove (101) and the second groove (102) are respectively propped against the surfaces of the nut positioning component (4) with different heights.

Further preferably, the nut positioning assembly (4) comprises a nut mounting part (41), a first connecting part (42), a transition part (43) and a second connecting part (44); the nut mounting part (41) extends along the horizontal direction, one end of the nut mounting part (41) in the horizontal extending direction is provided with a first connecting part (42), one end of the first connecting part (42) is fixedly connected with the side surface of the nut mounting part (41) in the vertical extending direction, and the other end of the first connecting part (42) extends outwards horizontally in the direction far away from the nut mounting part (41); the other end of the horizontal extending direction of the nut mounting part (41) is provided with a transition part (43), one end of the transition part (43) is also fixedly connected with the side surface of the vertical extending direction of the nut mounting part (41), and the other end of the transition part (43) obliquely extends downwards along the direction close to the ground; one end, far away from the nut mounting portion (41), of the transition portion (43) is provided with a second connecting portion (44), one end of the second connecting portion (44) is fixedly connected with the transition portion (43), and the other end of the transition portion (43) extends outwards horizontally along the direction far away from the transition portion (43) or the nut mounting portion (41); a nut caulking groove (200) is formed in the end face, far away from the ground, of the nut mounting portion (41), a first through hole (300) which penetrates through the nut mounting portion is formed in the surface, opposite to the nut caulking groove (200), of the nut mounting portion (41), and the first through hole (300) is communicated with the nut caulking groove (200); the nut mounting part (41) is embedded in the first groove (101), and the first connecting part (42) is abutted against the side surface of the first groove (101) far away from the second groove (102); the transition portion (43) and the second connecting portion (44) abut against the inner surface of the second groove (102).

More preferably, a second through hole (400) which penetrates through the transition portion (43) and the second connecting portion (44) in the vertical direction is formed in the transition portion, an elastic clamping plate (45) is arranged in the second through hole (400), one end of the elastic clamping plate (45) is fixedly connected with the end face of the nut mounting portion (41) on the side far away from the first mounting portion, and the other end of the elastic clamping plate (45) extends downwards in an inclined mode towards the direction far away from the nut mounting portion (41) and extends out of the second through hole (400); the edge of the second groove (102) is correspondingly provided with a clamping groove (500), and the surface of the clamping groove (500) is propped against the surface of the elastic clamping plate (45) in the extending direction.

Further preferably, a positioning boss (103) is further arranged in the first groove (101), the diameter of the positioning boss (103) is matched with that of the first through hole (300), the positioning boss (103) extends into the first through hole (300) and abuts against the nut mounting portion (41), and the height of the positioning boss (103) is matched with that of the first through hole (300) in the radial direction.

On the basis of the technical scheme, preferably, the movable upper die (3) comprises a first linear motion mechanism (31) and a plurality of upright posts (32); each stand (32) extends along vertical direction, and each stand (32) is parallel and the interval sets up, and the one end of each stand (32) all with base (1) fixed connection, the fixed other end that keeps away from base (1) that sets up in each stand (32) of first linear motion mechanism (31), the movable part of first linear motion mechanism (31) is towards the vertical downwardly extending in first recess (101) position.

Preferably, the emergency stop device also comprises a controller, a two-hand switch (6) and an emergency stop button (7); the two-hand switch (6), the emergency stop button (7) and the first linear motion mechanism (31) are electrically connected with the controller.

Compared with the prior art, the crimping tool for the positioning component of the engine front bracket nut provided by the utility model has the following beneficial effects:

(1) according to the scheme, the positioning lower die and the movable upper die are arranged, so that the simultaneous pre-assembly forming operation of a plurality of nut positioning assemblies and bracket nuts which are arranged in pairs can be realized, the positioning lower die is provided with a stepped positioning part and can be tightly attached to the nut positioning assemblies, and the horizontal posture of the nut positioning assemblies is always maintained;

(2) the positioning lower die with a fixed structure is adopted, and a plurality of nut positioning assemblies and bracket nuts are placed in the positioning lower die in advance, so that one or more nuts can be pressed at one time, and the pressing efficiency is improved;

(3) the positioning lower die with a movable structure is adopted, so that the positioning lower die is driven by a push plate to move intermittently, the function of automatic feeding and shifting is realized, continuous crimping is realized, and the crimping efficiency can be improved as well;

(4) the safety during operation can be guaranteed to both hands switch.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a crimping tool for a nut positioning component of a front bracket of an engine according to the utility model;

FIG. 2 is a top view of a crimping tool for a nut positioning assembly of a front bracket of an engine according to the present invention;

FIG. 3 is a right side view of a crimping tool for a nut positioning assembly of a front bracket of an engine according to the present invention;

FIG. 4 is a perspective view of the combination state of a base, a positioning lower die and a movable upper die of the crimping tool for the nut positioning component of the front bracket of the engine;

FIG. 5 is a front view of a base, a positioning lower die and a movable upper die of another structure of the crimping tool for the nut positioning component of the front bracket of the engine;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a perspective view of a nut positioning assembly of the crimping tooling for the nut positioning assembly of the front bracket of the engine;

FIG. 8 is a front view, partially in cross-section, of a nut positioning assembly of the engine front bracket nut positioning assembly crimping tool of the present invention;

fig. 9 is a top view of a nut positioning assembly of the crimping tool for the nut positioning assembly of the front bracket of the engine.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1-4, the utility model provides a crimping tool for a nut positioning component of a front bracket of an engine, which comprises a base 1, a positioning lower die 2 and a movable upper die 3; the plurality of nut positioning components 4 and the bracket nut 5 are supplied materials;

the base 1 is fixedly arranged relative to the ground; the base 1 is a platform for placing and fixing the positioning lower die 2 and the movable upper die 3.

The positioning lower die 2 is arranged at one end of the base 1 far away from the ground; the end surface of the positioning lower die 2 far away from the ground is provided with at least one step-shaped positioning part 100; the illustrated positioning lower die 2 is provided with 2 positioning portions 100, which can be increased or decreased according to actual needs. The positioning portion 100 has a plurality of sets of surfaces with different heights for supporting different positions of the nut positioning assembly 4, so that the nut positioning assembly 4 is kept in a horizontal state.

Each nut positioning component 4 is respectively arranged in the positioning part 100 of the lower positioning die 2 and is abutted against the surface of the lower positioning die 2; the nut positioning component 4 is provided with a nut caulking groove 200; a bracket nut 5 is arranged in the nut caulking groove 200; the bracket nut 5 is matched with the size of the nut caulking groove 200; the nut positioning assembly 4 is in turn sized to accommodate the positioning portion 100.

The movable upper die 3 is parallel and fixedly arranged relative to the base 1, and the movable upper die 3 is provided with a movable part which is close to the positioning part 100 along the vertical direction and vertically presses the bracket nut 5 into the nut caulking groove 200. The movable upper die 3 in the scheme is tightly matched with the nut positioning component 4 at the nut caulking groove 200 through compressing the nut positioning component 4 and the bracket nut 5 which are placed in advance, so that the pre-assembly purpose is achieved. The nut positioning component 4 can be made of plastic material.

In order to realize the high-efficiency nut positioning component and the bracket nut crimping, the following two modes can be adopted:

in the first mode, as shown in fig. 1 to 4, the positioning lower die 2 and the base 1 are relatively fixed, the base 1 at two ends of the positioning lower die 2 in the horizontal length extending direction is respectively provided with a first pressing block 81, and the first pressing block 81 abuts against the surface of the positioning lower die 2. The position of location lower mould 2 can not remove, can be on location lower mould 2 along its horizontal length extending direction interval and linear a plurality of echelonment of arranging location portion 100, can place multiunit nut locating component and bracket nut simultaneously, once the crimping is accomplished multiunit nut locating component and bracket nut by the last mould 3 of activity. The size of the movable part of the movable upper die 3 is adapted to the size of the positioning lower die 2.

In a second mode, as shown in fig. 5-6, the positioning lower die 2 is slidably connected with the base 1; second pressing blocks 82 are respectively arranged on the bases 1 at two ends of the positioning lower die 2 in the horizontal width extending direction, the second pressing blocks 82 are opposite and arranged at intervals, and a channel for the horizontal sliding of the positioning lower die is formed between the second pressing blocks 82; the edge of the base 1 is provided with a second linear motion mechanism 83, and the second linear motion mechanism 83 is provided with a push plate 84, and the push plate 84 abuts against the surface of the lower die 2 on the side far away from the channel. The positioning lower die 2 is movable, the sliding direction of the positioning lower die 2 is limited by two second press blocks 82, the positioning lower die 2 is further driven to move intermittently by a second linear motion mechanism 83, similarly, a plurality of stepped positioning portions 100 are arranged on the positioning lower die 2 at intervals and linearly along the horizontal length extension direction of the positioning lower die, a plurality of nut positioning assemblies and bracket nuts are correspondingly placed, the movable upper die 3 is only pressed and connected with one nut positioning assembly and one bracket nut at a time, and then the positioning lower die 2 is pushed by the second linear motion mechanism 83 to slide for a certain distance, so that the other nut positioning assembly and the other bracket nut are positioned under the movable upper die 3. Continuous and quick crimping processes of the nut positioning assembly and the bracket nut can also be realized.

As shown in fig. 1, a specific positioning structure of the positioning portion 100 is illustrated. The positioning part 100 comprises a first groove 101 extending along the horizontal direction and a second groove 102 penetrating through the positioning lower die 2 along the horizontal direction; the first groove 101 and the second groove 102 extend in a direction orthogonal to each other; the first groove 101 and the second groove 102 are communicated with each other; the first groove 101 and the second groove 102 both extend downward in the vertical direction, and the first groove 101 and the second groove 102 have different depths, although the vertical depth of the first groove 101 is smaller than that of the second groove 102. As can be seen from the figure, the positioning lower die 2 of the present scheme has two adjacent positioning portions 100, the first grooves 101 of each positioning portion 100 are arranged in parallel at intervals, the second grooves 102 of each positioning portion 100 are communicated with each other to form a whole and transversely penetrate through the positioning lower die 2, the penetrating second grooves 102 are convenient for holding and grabbing the separate nut positioning assembly 4 in a hand-held manner, so that the positioning lower die 2 has a better taking and placing operation space, compared with the non-penetrating second grooves 102, only the bracket nut 5 can be directly grabbed by hand, the mode has a hand contact area with the nut positioning assembly 4, and the stability in placing or grabbing can be improved. The number of the positioning parts 100 may be increased or decreased as necessary.

As shown in fig. 7, a specific structure of the nut positioning assembly 4 is shown. The nut positioning assembly 4 comprises a nut mounting portion 41, a first connecting portion 42, a transition portion 43 and a second connecting portion 44; the nut mounting part 41 extends along the horizontal direction, one end of the nut mounting part 41 in the horizontal extending direction is provided with a first connecting part 42, one end of the first connecting part 42 is fixedly connected with the side surface of the nut mounting part 41 in the vertical extending direction, and the other end of the first connecting part 42 extends outwards horizontally in the direction away from the nut mounting part 41; the other end of the horizontal extending direction of the nut mounting part 41 is provided with a transition part 43, one end of the transition part 43 is also fixedly connected with the side surface of the vertical extending direction of the nut mounting part 41, and the other end of the transition part 43 extends downwards along the direction close to the ground in an inclined way; one end of the transition part 43, which is far away from the nut mounting part 41, is provided with a second connecting part 44, one end of the second connecting part 44 is fixedly connected with the transition part 43, and the other end of the transition part 43 extends outwards horizontally along the direction far away from the transition part 43 or the nut mounting part 41; the end surface of the nut mounting part 41 far away from the ground is provided with a nut caulking groove 200, the surface of the nut mounting part 41 on the opposite side of the nut caulking groove 200 is provided with a through first through hole 300, and the first through hole 300 is communicated with the nut caulking groove 200; the nut mounting part 41 is embedded in the first groove 101, and the first connecting part 42 is abutted against the side surface of the first groove 101 on the side far away from the second groove 102; the transition portion 43 and the second connection portion 44 abut different surfaces of the second groove 102. The first connecting portion 41 is used for pre-positioning with the engine front bracket, the second connecting portion 44 is used for holding with the hand that the engine front bracket is assembled, the nut mounting portion 41 is used for accurately limiting the bracket nut 5, and the transition portion 43 is used for connecting the second connecting portion 44 with the nut mounting portion 41 in a smooth transition mode.

A second through hole 400 which penetrates through in the vertical direction is formed in the transition part 43 and the second connecting part 44, an elastic clamping plate 45 is arranged in the second through hole 400, one end of the elastic clamping plate 45 is fixedly connected with the end face of the nut mounting part 41 on the side far away from the first mounting part, and the other end of the elastic clamping plate 45 extends downwards in an inclined mode towards the direction far away from the nut mounting part 41 and extends out of the second through hole 400; the edge of the second groove 102 is correspondingly provided with a clamping groove 500, and the surface of the clamping groove 500 is abutted against the surface of the elastic clamping plate 45 in the extending direction. This elastic clamping plate 45 can prevent to carry out the horizontal drunkenness or the dropping of the nut locating component 4 after assembling with the bracket before the engine, but it has surpassed the scope of second through-hole 400, in order to make the better laminating nut locating component 4 of second recess 102, the event is corresponding at second recess 102 edge has set up inside sunken draw-in groove 500, because the focus of nut locating component 4 is not itself, the shape of draw-in groove 500 is identical completely with elastic clamping plate 45's profile, the surface of laminating nut locating component 4 that can be better, better messenger's it keeps horizontally stable state.

In order to better limit the posture of the nut positioning component 4, a positioning boss 103 is further arranged in the first groove 101, the diameter of the positioning boss 103 is matched with that of the first through hole 300, the positioning boss 103 extends into the first through hole 300 and is abutted against the nut mounting portion 41, and the height of the positioning boss 103 is matched with that of the first through hole 300 in the radial direction. When the nut positioning component 4 is placed, the nut positioning component 4 cannot slide horizontally in the first groove 101 due to the limitation of the positioning boss 103.

As shown in the drawings, it is further preferable that the nut attaching portion 41, the transition portion 43, and the second connecting portion 44 have the same width in the horizontal extending direction. The depth of the nut caulking groove 200 in the vertical extension direction is smaller than the height of the carrier nut 5 in the axial extension direction.

As further shown in fig. 7, the projection of the first connecting portion 42 on the vertically extending side surface of the nut mounting portion 41 is located at a non-edge position of the side surface of the nut mounting portion 41; and the vertical sectional shape of the first connection portion 42 is a circle, a rectangle, a rounded rectangle, a trapezoid, or a sector. The non-edge positioned first connection 42 is able to better conform to the engine front bracket.

As shown in fig. 1 and 3, the movable upper die 3 includes a first linear motion mechanism 31 and a plurality of columns 32; each stand 32 extends along vertical direction, and each stand 32 is parallel and the interval sets up, and the one end of each stand 32 all with base 1 fixed connection, the fixed other end of keeping away from base 1 that sets up at each stand 32 of first linear motion mechanism 31, the movable part of first linear motion mechanism 31 is towards the vertical downwardly extending in first recess 101 position. The first linear motion mechanism 31 may be implemented in the form of an air cylinder, a hydraulic cylinder, or an electric push rod.

In order to improve the safety of the scheme, the utility model can be further provided with a controller, a double-hand switch 6 and an emergency stop button 7; the two-hand switch 6, the emergency stop button 7 and the first linear motion mechanism 31 are all electrically connected with the controller. The first linear motion mechanism 31 is operated by the two-hand switch 6, so that the operator can be prevented from being pressed and the emergency stop button 7 can provide an emergency stop function. The first linear motion mechanism 31 or the second linear motion mechanism 83 may be implemented in the form of an air cylinder, a hydraulic cylinder, or an electric push rod.

The application process of the scheme is as follows: placing a nut positioning component 4 on a positioning part 100 of a corresponding structure in a one-way or two-way mode of connection of the positioning lower die 2 and the base 1, enabling the nut positioning component 4 to keep a horizontal posture, placing a bracket nut 5 in a nut caulking groove 200 of the nut positioning component 4, operating a two-hand switch after the nut positioning component is placed stably, and crimping all the nut positioning components 4 and the bracket nuts 5 which are arranged in pairs by a movable upper die 3 at one time; or the movable upper die 3 is used for crimping the nut positioning components 4 and the bracket nuts 5 which are arranged in pairs one by one; and after the nut positioning component 4 on the lower die 2 to be positioned and the bracket nut 5 are both in compression joint, resetting the first linear motion mechanism 31 or the second linear motion mechanism 83, taking out a finished product after compression joint, putting other nut positioning components 4 to be compressed and the bracket nut 5 again, and repeating the processes.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a bracket nut locating component crimping frock before engine which characterized in that: comprises a base (1), a positioning lower die (2) and a movable upper die (3);

the base (1) is fixedly arranged relative to the ground;

2. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 1, characterized in that: the positioning lower die (2) and the base (1) are relatively fixed, first pressing blocks (81) are respectively arranged on the bases (1) at two ends of the positioning lower die (2) in the horizontal length extending direction, and the first pressing blocks (81) are abutted to the surface of the positioning lower die (2).

3. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 1, characterized in that: the positioning lower die (2) is connected with the base (1) in a sliding way; second pressing blocks (82) are respectively arranged on the bases (1) at two ends of the lower positioning die (2) in the horizontal width extending direction, the second pressing blocks (82) are arranged oppositely and at intervals, and a channel for the lower positioning die to slide horizontally is formed between the second pressing blocks (82); a second linear motion mechanism (83) is arranged at the edge of the base (1), the second linear motion mechanism (83) is provided with a push plate (84), and the push plate (84) abuts against the surface of one side, away from the channel, of the positioning lower die (2).

4. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 3, characterized in that: the positioning part (100) is provided with a first groove (101) extending along the horizontal direction and a second groove (102) penetrating through the positioning lower die (2) along the horizontal direction; the first groove (101) and the second groove (102) are arranged in an orthogonal mode in the extending direction; the first groove (101) and the second groove (102) are communicated with each other; the depth of the first groove (101) in the vertical direction is different from the depth of the second groove (102) in the vertical direction; the inner surfaces of the first groove (101) and the second groove (102) are respectively propped against the surfaces of the nut positioning component (4) with different heights.

5. The crimping tool for the nut positioning component of the front bracket of the engine as claimed in claim 4, wherein the crimping tool comprises: the nut positioning assembly (4) comprises a nut mounting part (41), a first connecting part (42), a transition part (43) and a second connecting part (44); the nut mounting part (41) extends along the horizontal direction, one end of the nut mounting part (41) in the horizontal extending direction is provided with a first connecting part (42), one end of the first connecting part (42) is fixedly connected with the side surface of the nut mounting part (41) in the vertical extending direction, and the other end of the first connecting part (42) extends outwards horizontally in the direction far away from the nut mounting part (41); the other end of the horizontal extending direction of the nut mounting part (41) is provided with a transition part (43), one end of the transition part (43) is also fixedly connected with the side surface of the vertical extending direction of the nut mounting part (41), and the other end of the transition part (43) obliquely extends downwards along the direction close to the ground; one end, far away from the nut mounting portion (41), of the transition portion (43) is provided with a second connecting portion (44), one end of the second connecting portion (44) is fixedly connected with the transition portion (43), and the other end of the transition portion (43) extends outwards horizontally along the direction far away from the transition portion (43) or the nut mounting portion (41); a nut caulking groove (200) is formed in the end face, far away from the ground, of the nut mounting portion (41), a first through hole (300) which penetrates through the nut mounting portion is formed in the surface, opposite to the nut caulking groove (200), of the nut mounting portion (41), and the first through hole (300) is communicated with the nut caulking groove (200); the nut mounting part (41) is embedded in the first groove (101), and the first connecting part (42) is abutted against the side surface of the first groove (101) far away from the second groove (102); the transition portion (43) and the second connecting portion (44) abut against the inner surface of the second groove (102).

6. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 5, characterized in that: a second through hole (400) which is through in the vertical direction is formed in the transition portion (43) and the second connecting portion (44), an elastic clamping plate (45) is arranged in the second through hole (400), one end of the elastic clamping plate (45) is fixedly connected with the end face of one side, away from the first mounting portion, of the nut mounting portion (41), and the other end of the elastic clamping plate (45) extends downwards in an inclined mode towards the direction away from the nut mounting portion (41) and extends out of the second through hole (400); the edge of the second groove (102) is correspondingly provided with a clamping groove (500), and the surface of the clamping groove (500) is propped against the surface of the elastic clamping plate (45) in the extending direction.

7. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 5, characterized in that: still be provided with location boss (103) in first recess (101), the diameter of location boss (103) is identical with the diameter of first through-hole (300), and location boss (103) stretch into in first through-hole (300) and support with nut installation department (41), and the height of location boss (103) is identical with the height of first through-hole (300) radial direction.

8. The crimping tool for the nut positioning component of the front bracket of the engine as claimed in claim 1, characterized in that: the movable upper die (3) comprises a first linear motion mechanism (31) and a plurality of upright posts (32); each stand (32) extends along vertical direction, and each stand (32) is parallel and the interval sets up, and the one end of each stand (32) all with base (1) fixed connection, the fixed other end that keeps away from base (1) that sets up in each stand (32) of first linear motion mechanism (31), the movable part of first linear motion mechanism (31) is towards the vertical downwardly extending in first recess (101) position.

9. The crimping tool for the nut positioning component of the front bracket of the engine according to claim 8, is characterized in that: the emergency stop device also comprises a controller, a two-hand switch (6) and an emergency stop button (7); the two-hand switch (6), the emergency stop button (7) and the first linear motion mechanism (31) are electrically connected with the controller.