CN220161534U

CN220161534U - Rear longitudinal beam laser cutting clamp

Info

Publication number: CN220161534U
Application number: CN202321517570.9U
Authority: CN
Inventors: 陈军; 钱斌; 马晨
Original assignee: Qingdao Yingyun Automobile Parts Co ltd
Current assignee: Qingdao Yingyun Automobile Parts Co ltd
Priority date: 2023-06-14
Filing date: 2023-06-14
Publication date: 2023-12-12
Anticipated expiration: 2033-06-14

Abstract

The utility model discloses a rear longitudinal beam laser cutting clamp, and relates to the technical field of thermoforming processes. The rear longitudinal beam laser cutting clamp comprises a base and a plurality of stay bars fixed on the base; further comprises: the auxiliary positioning seat and the positioning pin are arranged at intervals and are fixed on the base through supporting rods respectively; the auxiliary positioning seat comprises a positioning main body fixed on the stay bar and elastic arms fixed on two sides of the positioning main body; the outer side surfaces of the elastic arms at the two sides are used as positioning surfaces of the inner side surfaces of the semi-finished products of the rear longitudinal beams. The fixture designed by the utility model has the advantages of light structure, low manufacturing cost and easy adjustment and modification to adapt to the change of parts.

Description

Rear longitudinal beam laser cutting clamp

Technical Field

The utility model relates to the technical field of thermoforming processes, in particular to a rear longitudinal beam laser cutting clamp.

Background

The rear side rail is part of the chassis structure of the vehicle and is typically a longer rail secured to the rear of the frame; the cross section of the rear longitudinal beam main body structure is mostly rectangular or trapezoidal.

The rear longitudinal beam is processed by adopting a hot forming process, a blank is punched through a hot forming die to prepare a semi-finished product, and then the semi-finished product is precisely cut through a laser cutting technology to prepare a formed product; when the semi-finished product is cut by laser, the semi-finished product is firstly required to be positioned by a cutting clamp.

At present, 3D laser cutting equipment is widely adopted in the cutting process of each large stamping factory, the 3D laser cutting equipment is provided with corresponding position changing machines, and the cutting clamp is generally designed by depending on the position changing machines; the cutting fixture designed by the position changing machine has complicated structure and higher manufacturing cost, is only used for being installed on the position changing machine, and is generally suitable for the production task of mass laser cutting in a stamping factory.

For the cutting fixture designed by the supporting positioner, the inventor considers that the following technical problems exist: in the early development stage of automobile parts, the specific shape and characteristics of the rear longitudinal beam are inevitably frequently changed in design, if a semi-finished product is positioned by adopting a cutting fixture designed by a position changing machine, the manufacturing cost of the cutting fixture can be increased, and the manufacturing cost of the cutting fixture can be greatly and continuously increased by frequently adjusting the structure of the rear longitudinal beam.

Therefore, how to solve the above problems, designing a cutting fixture for a laser cutting device without a positioner is a technical problem that needs to be solved by those skilled in the art, and the cutting fixture has a light structure, low manufacturing cost, and easy adjustment and modification to adapt to the change of the parts.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the technical problems, the embodiment of the utility model provides a rear longitudinal beam laser cutting clamp which aims to solve the problems in the background technology.

The utility model provides the following technical scheme:

a rear longitudinal beam laser cutting clamp comprises a base and a plurality of stay bars fixed on the base; further comprises: the auxiliary positioning seat and the positioning pin are arranged at intervals and are fixed on the base through supporting rods respectively;

the auxiliary positioning seat comprises a positioning main body fixed on the stay bar and elastic arms fixed on two sides of the positioning main body; the outer side surfaces of the elastic arms at the two sides are used as positioning surfaces of the inner side surfaces of the semi-finished products of the rear longitudinal beams.

Preferably, an elastic gap exists between the inner side surface of the elastic arm and the side surface of the positioning main body.

Preferably, the positioning main body is provided with an elastic pad at the same height as the end part of the elastic arm; the distance between the side surface of the elastic pad and the inner side surface of the end part of the elastic arm is.

Preferably, the elastic arm is made of 65Mn material.

Preferably, the base further comprises a first end supporting leg and a second end supporting leg which are positioned at two ends of the base, and the first end supporting leg and the second end supporting leg are fixed at two ends of the base through supporting rods.

Preferably, the device further comprises a magnetic absorber fixed on the stay bar, wherein the magnetic absorber is used for absorbing and clamping the inner wall of the semi-finished product of the rear longitudinal beam.

Preferably, the magnetic force absorber comprises a clamp and a magnet, and the magnet is fixed on a clamping head of the clamp.

Preferably, the magnetic adsorber comprises a vertical magnetic adsorber; the vertical magnetic absorber is vertically arranged on a stay bar for fixing the positioning pin.

Preferably, the magnetic force absorber comprises a lateral magnetic force absorber which is laterally fixed on the stay bar.

The rear longitudinal beam laser cutting clamp provided by the embodiment of the utility model has the following beneficial effects:

1. the fixture designed by the utility model has the advantages of light structure, low manufacturing cost and easy adjustment and modification to adapt to the change of parts;

2. the auxiliary positioning seat structure has better compatibility to the size of the semi-finished product of the rear longitudinal beam;

3. the magnetic absorber and the supporting feet have good design interchangeability and high portability, and a large amount of manufacturing cost is saved.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model at an angle I;

FIG. 2 is a schematic view of the structure of the second angle of the present utility model;

FIG. 3 is a schematic view of the structure of the third angle of the present utility model;

FIG. 4 is an effect diagram of the present utility model for positioning a rear rail blank;

FIG. 5 is a diagram showing the effect of the vertical magnetic adsorber before clamping;

FIG. 6 is a diagram showing the effect of the vertical magnetic adsorber of the present utility model for adsorption clamping;

FIG. 7 is a cross-sectional view of the present utility model for locating a rear rail blank;

FIG. 8 is an enlarged view of part of the D of FIG. 2 in accordance with the present utility model;

FIG. 9 is an enlarged view of a portion of E of FIG. 3 in accordance with the present utility model;

FIG. 10 is an enlarged view of a portion of F of FIG. 7 in accordance with the present utility model;

fig. 11 is a schematic structural view of a rear side member semi-finished product in the present utility model.

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. Based on the embodiments of the present utility model, all other embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of the present utility model.

See fig. 1-11.

Aiming at the problems mentioned in the background art, the embodiment of the utility model provides a rear longitudinal beam laser cutting clamp, which solves the technical problems, and the technical scheme is as follows:

a rear longitudinal beam laser cutting fixture, comprising a base 310 and a plurality of stay bars 360 fixed on the base 310; the number and position settings of the brace bars 360 are specifically designed according to the specific situation;

further comprises: the auxiliary positioning seat 330 and the positioning pin 320 are arranged at intervals and fixed on the base 310 through the supporting rod 360 respectively;

in this embodiment, the auxiliary positioning seat 330 and the positioning pin 320 are located at two sides of the base 310, and can respectively and correspondingly position two sides of the rear longitudinal beam semi-finished product 100 b; meanwhile, the number and position settings of the auxiliary positioning seats 330 and the positioning pins 320 are specifically designed according to specific situations;

wherein, the auxiliary positioning seat 330 comprises a positioning main body 331 fixed on the stay bar 360, and elastic arms 332 fixed on both sides of the positioning main body 331; the outer side surfaces of the two side elastic arms 332 serve as positioning surfaces of the inner side surfaces of the rear longitudinal beam semi-finished product 100 b; the elastic tension of the elastic arms 332 is used to tension and position the rear side member semi-finished product 100b.

In this embodiment, the positioning pin 320 is used to cooperate with the positioning hole 110b on the rear stringer semi-finished product 100 b; the positioning holes 110b can be selected from the inherent hole structures on the rear longitudinal beam forming product, and the positioning holes 110b can be arranged at the reserved hole positions on the rear longitudinal beam forming product;

for the positioning hole 110b arranged at the position of the reserved hole, after the positioning hole 110b is matched with the positioning pin 320 to complete the positioning and cutting operation of the rear longitudinal beam semi-finished product 100b, the positioning hole 110b can be cut by a cutting tool and is cut into the structural shape of the reserved hole.

It should be noted that, the preformed holes are some inherent structural holes on the rear longitudinal beam formed product, and these structural holes may be mounting holes of fittings or pipeline through holes; the positioning hole 110b can be conveniently designed by means of a preformed hole.

In this embodiment, an elastic gap exists between the inner side surface of the elastic arm 332 and the side surface of the positioning body 331; the spring gap serves as a rebound space for the spring arm 332.

In this embodiment, the positioning body 331 is provided with an elastic pad 331a at a position equal to the end of the elastic arm 332; the distance d between the side surface of the elastic pad 331a and the inner side surface of the end portion of the elastic arm 332 is 0.75mm.

Fig. 7 and 10 show the same; the design principle of the auxiliary positioning seat 330 is as follows:

1. the surface profile of the semi-finished product 100b of the rear longitudinal beam produced by thermoforming in each batch always deviates from the theoretical surface profile due to the fluctuation of factors such as the thickness of the raw material and the abrasion degree of the die, the profile degree fluctuates within the range of +/-0.25 mm, and the allowable tolerance of the surface profile of the semi-finished product 100b of the rear longitudinal beam is less than +/-0.5 mm;

therefore, by providing the sub-positioning seat 330 having the elastic positioning surface as the main positioning structure of the jig, the deviation of the actual profile surface from the theoretical profile surface can be compensated;

2. the rear side member semi-finished product 100b is placed on the sub-positioning seat 330, and the theoretical inner side profile S of the rear side member semi-finished product 100b _th Slightly smaller than the actual locating surface profile S of the rear longitudinal beam semi-finished product 100b _ac The inner side surface of the rear side member semi-finished product 100b is artificially pressed lightly, and the elastic arms 332 are driven to swing inward by the force, so that the swing gap is reduced, and the surface restraint of the rear side member semi-finished product 100b is completed.

In this embodiment, the elastic arm 332 is made of 65Mn material; and requires austempering to 40-45HRC.

In this embodiment, the base further includes a first end supporting leg 341 and a second end supporting leg 342 located at two ends of the base 310, where the first end supporting leg 341 and the second end supporting leg 342 are fixed at two ends of the base 310 through a supporting rod 360; the first end leg 341 and the second end leg 342 are mainly used for supporting both ends of the rear side member semi-finished product 100 b;

meanwhile, if other positions of the rear side member semi-finished product 100b also need to be supported, supporting feet can be arranged at different positions; the supporting legs are made of elastic materials, such as silica gel pads or rubber pads, and the supporting legs at different positions are arranged, so that the supporting legs have supporting effects and can be used for damping vibration.

In this embodiment, the device further includes a magnetic adsorber fixed on the brace rod 360, where the magnetic adsorber is used to adsorb and clamp the inner wall of the rear longitudinal beam semi-finished product 100 b; the magnetic absorber can prevent the rear longitudinal beam semi-finished product 100b from generating defects such as profile saw-tooth shape, undercut and the like due to the influence of cutting air flow and waste gravity in the cutting process.

In this embodiment, the magnetic absorber includes a clamp and a magnet, and the magnet is fixed on a chuck of the clamp; such as a vertical magnetic adsorber 350, includes a clamp 351 and a magnet 352.

In this embodiment, the magnetic force absorber includes a vertical magnetic force absorber 350; the vertical magnetic absorber 350 is vertically arranged on a stay bar 360 of the fixed positioning pin 320; the vertical magnetic force absorber 350 is arranged, and the inner side surface of the rear longitudinal beam semi-finished product 100b can be absorbed and tensioned at the position of the locating pin 320.

In this embodiment, the magnetic force absorber includes a lateral magnetic force absorber 370, and the lateral magnetic force absorber 370 is laterally fixed on the brace 360; the lateral magnetic adsorbers 370 may be positioned primarily in areas of weakness in the stiffness of the rear rail blank 100b.

Fig. 5 and 6; the vertical magnetic adsorber 350 works as follows: after the semi-finished rear longitudinal beam 100b is placed on the cutting fixture, at this time, the vertical magnetic absorber 350 is in an open state, then the clamp 351 handle is pushed to the front dead center of the swing arm mechanism, the magnet 352 is just absorbed on the lower surface of the semi-finished rear longitudinal beam 100b, the semi-finished rear longitudinal beam 100b is tensioned on each supporting leg under the action of magnetic force, and vibration of the semi-finished rear longitudinal beam 100b in the cutting process is prevented.

The design principle of the rear longitudinal beam laser cutting clamp provided by the embodiment of the utility model is as follows:

1. the auxiliary positioning seat 330 and the positioning pin 320 form a positioning system of the rear longitudinal beam semi-finished product 100b, the rear longitudinal beam semi-finished product 100b is placed on a cutting fixture, the positioning pin 320 enters the positioning hole 110b of the longitudinal beam semi-finished product 110b, the auxiliary positioning seat 330 is embedded with the 'nearly' shaped profile surface of the rear longitudinal beam semi-finished product 100b, and the main positioning function of the rear longitudinal beam semi-finished product 100b is completed;

2. the first end supporting leg 341, the second end supporting leg 342 and the supporting legs at different positions form a supporting system of the semi-finished product 100b of the rear longitudinal beam, the semi-finished product 100b of the rear longitudinal beam is placed on each supporting leg from the upper part of the cutting clamp, and the positioning operation of the semi-finished product 100b of the rear longitudinal beam is finished at the moment;

3. the magnetic absorber absorbs and clamps the rigid weak area of the rear longitudinal beam semi-finished product 100b, and prevents the rear longitudinal beam semi-finished product 100b from generating defects such as profile saw-tooth shape, undercut and the like under the influence of cutting airflow and waste gravity in the cutting process.

The rear longitudinal beam laser cutting clamp provided by the embodiment of the utility model has the following beneficial effects: the fixture designed by the utility model has the advantages of light structure, low manufacturing cost and easy adjustment and modification to adapt to the change of parts; the auxiliary positioning seat structure has better compatibility to the size of the semi-finished product of the rear longitudinal beam; the magnetic absorber and the supporting feet have good design interchangeability and high portability, and save a large amount of manufacturing cost.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may or may not be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present teachings and concepts, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the accompanying claims.

Claims

1. A rear longitudinal beam laser cutting clamp comprises a base and a plurality of stay bars fixed on the base; characterized by further comprising: the auxiliary positioning seat and the positioning pin are arranged at intervals and are fixed on the base through supporting rods respectively;

2. The rear rail laser cutting jig of claim 1, wherein the inner side of the resilient arm has a resilient gap with the side of the positioning body.

3. The rear side rail laser cutting jig according to claim 2, wherein the positioning body is provided with an elastic pad at a position at the same height as the end of the elastic arm; the distance between the side surface of the elastic pad and the inner side surface of the end part of the elastic arm is 0.75mm.

4. The rear rail laser cutting jig of claim 1, wherein the resilient arms are formed of 65Mn material.

5. The rear rail laser cutting jig of claim 1, further comprising first and second end feet at opposite ends of the base, the first and second end feet being secured to opposite ends of the base by braces.

6. The rear side rail laser cutting jig according to claim 1, further comprising a magnetic adsorber fixed to the stay bar, the magnetic adsorber being for adsorbing and clamping an inner wall of the rear side rail semi-finished product.

7. The rear rail laser cutting jig of claim 6, wherein the magnetic adsorber comprises a clamp and a magnet, the magnet being secured to a jaw of the clamp.

8. The rear rail laser cutting jig of claim 6, wherein the magnetic adsorber comprises a vertical magnetic adsorber; the vertical magnetic absorber is vertically arranged on a stay bar for fixing the positioning pin.

9. The rear rail laser cutting jig of claim 6, wherein the magnetic adsorbers comprise lateral magnetic adsorbers that are laterally secured to struts.