CN114799954B

CN114799954B - Five-axis machine quick-change clamp for insert machining of large-sized cold stamping automobile die

Info

Publication number: CN114799954B
Application number: CN202210765917.5A
Authority: CN
Inventors: 兰海泉; 唐伟铭; 田云龙; 付礼
Original assignee: Gz Tooling Group Automobile Technology Co ltd
Current assignee: Gz Tooling Group Automobile Technology Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-09-16
Anticipated expiration: 2042-07-01
Also published as: CN114799954A

Abstract

A five-axis machine quick-change clamp for machining a large-scale cold stamping automobile die insert mainly comprises a base connected with a five-axis machine tool, wherein a locking mechanism is in threaded connection with the base, and a quick-change plate is quickly assembled and separated from the locking mechanism through a positioning locking nail in threaded connection with the quick-change plate; by the aid of the structure, accurate positioning between the insert and the clamp can be achieved, quick replacement between the clamp and a five-axis machine can be achieved, machining precision and machining efficiency are improved, and machining cost is reduced.

Description

Five-axis machine quick-change clamp for insert machining of large-sized cold stamping automobile die

Technical Field

The invention belongs to the technical field of clamps, and particularly relates to a five-axis machine quick-change clamp for machining a large-scale cold stamping automobile die insert.

Background

Functional inserts in a large automobile cold stamping die belong to a nonstandard discrete processing mode, namely, each block has different attributes, and is different in shape, size, screw hole position, aperture, precision and processing element. The functional insert has high precision requirement, large quantity, short processing time, large size, complex shape and difficult processing, and has the problems of clamping and positioning for repeatedly replacing workpieces. Therefore, clamping and positioning before five-axis machining are particularly difficult, time and labor are consumed, and the phenomenon of machining interference of the clamp is easy to occur.

The clamps in the existing market are not matched well, are in a jaw clamping type, are not well positioned, and particularly cannot clamp with high stability and high precision for an insert with a special-shaped profile. The clamping on the wire is time-consuming and labor-consuming. Therefore, the clamp has a plurality of limit types, which can cause the phenomenon that the machining utilization rate of five shafts is too low, and the machining cost is increased.

Disclosure of Invention

The invention aims to provide a five-axis machine quick-change clamp for machining an insert of a large-sized cold stamping automobile die, which can achieve accurate positioning between the insert and the clamp, can achieve quick change between the clamp and a five-axis machine, improves machining precision and machining efficiency, and reduces machining cost.

The technical scheme of the invention is as follows:

a five-axis machine quick-change clamp for machining a large-scale cold stamping automobile die insert comprises a base connected with a five-axis machine tool, wherein a locking mechanism is in threaded connection with the base, and a quick-change plate is quickly assembled and separated from the locking mechanism through a positioning locking nail in threaded connection with the quick-change plate;

the locking mechanism comprises a holder body, the upper end of the holder body is provided with a containing groove, and a locking slide bar group is arranged in the containing groove; the clamping seat cover plate is connected with the clamping seat body through bolts and limits the locking sliding strip group in the accommodating groove;

the locking slide bar group comprises a locking piece, a first transmission piece and a second transmission piece; one end of each of the locking piece and the second transmission piece is provided with a V-shaped convex surface, and the other end of each of the locking piece and the second transmission piece is provided with an inclined surface; one end of the first transmission piece is provided with a plane, and the other end of the first transmission piece is provided with a V-shaped convex surface;

the V-shaped convex surfaces of the first transmission pieces are matched with the inclined surfaces of the two second transmission pieces, and the V-shaped convex surfaces of the two second transmission pieces are respectively matched with the inclined surfaces of the two locking pieces; the plane of the first transmission piece is matched with the jackscrew, and the jackscrew is in threaded connection with the inside of the clamping seat body;

and the positioning locking nail is provided with a clamping groove corresponding to the V-shaped convex surface of the locking part.

Furthermore, a reset mechanism is further arranged on the locking sliding strip group.

Further, canceling release mechanical system includes spring and spring locating pin, the spring both ends set up respectively in two retaining members of homonymy two and fixed through spring locating pin.

Furthermore, the quick-change plate is provided with a plurality of waist-shaped grooves, and the grooves are internally provided with sliding blocks and plates with threaded holes or plates with matrix threaded holes on the sliding blocks.

The invention adopting the technical scheme can bring the following beneficial effects:

by the aid of the structure, accurate positioning between the insert and the clamp can be achieved, quick replacement between the clamp and a five-axis machine can be achieved, machining precision and machining efficiency are improved, and machining cost is reduced.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is an exploded view of the locking runner assembly of the present invention.

Fig. 4 is a schematic view of the quick-change clamp and the functional insert of the present invention.

In the figure, 1-base, 2-locking mechanism, 3-quick-change plate, 4-positioning locking nail, 5-jackscrew, 21-holder body, 22-locking slide group, 23-holder cover plate, 211-containing groove, 221-locking piece, 222-first transmission piece and 223-second transmission piece.

Detailed Description

As shown in fig. 1-3, a five-axis machine quick-change clamp for machining a large-sized cold stamping automobile die insert is characterized in that: the quick-change plate comprises a base 1 connected with a five-axis machine tool, wherein a locking mechanism 2 is connected to the base 1 in a threaded manner, and the quick-change plate 3 is quickly assembled and separated from the locking mechanism 2 through a positioning locking nail 4 connected with the quick-change plate in a threaded manner.

The fast changing plate 3 is made of 40Cr materials and is subjected to quenching and tempering treatment, and the structure of the fast changing plate can adopt various forms: if quick change plate 3 can be for seting up a plurality of waist type groove, and waist type inslot is provided with the plate that has the screw hole on slider and the slider, and the slider setting is in the slide in waist type groove, and die insert and slider threaded connection rely on the fastening force of bolt to make firm the setting of die insert on quick change plate 3.

In addition, the quick-change plate 3 can be provided with matrix threaded holes, the die insert is connected with different threaded holes, and the position of the die insert on the quick-change plate 3 can be adjusted and accurately positioned; in addition to the above-mentioned manner, the quick-change plate 3 may also be a suction cup, which adsorbs the die insert by magnetic force.

The locking mechanism 2 comprises a holder body 21, the upper end of the holder body 21 is provided with an accommodating groove 211 which is in an I-shaped structure, and a locking slide bar group 22 is arranged in the accommodating groove; the holder cover plate 23 is connected with the holder body 21 through bolts and limits the locking slide bar group 22 in the accommodating groove 211; the locking slider group 22 comprises a locking member 221, a first transmission member 222 and a second transmission member 223; one end of each of the locking member 221 and the second transmission member 223 is provided with a V-shaped convex surface, and the other end of each of the locking member 221 and the second transmission member 223 is provided with an inclined surface; the first transmission member 222 has a flat surface at one end and a V-shaped convex surface at the other end.

The V-shaped convex surface of the first transmission piece 222 is matched with the inclined surfaces of the two second transmission pieces 223, the inclined surfaces of the two second transmission pieces 223 form a V-shaped recess, and the V-shaped convex surface of the first transmission piece 222 is embedded in the V-shaped recess; the V-shaped convex surfaces of the second transmission piece 223 are respectively matched with the inclined surfaces of the two locking pieces 221; the inclined surfaces of the two locking pieces 221 form a V-shaped recess, and the V-shaped convex surface of the second transmission piece 223 is embedded in the V-shaped recess; the plane of the first transmission piece 222 is matched with the jackscrew 5, and the jackscrew 5 is in threaded connection with the inside of the holder body 21; when the jackscrew 5 is screwed in, the V-shaped convex surface of the first transmission piece 222 is displaced to push the two second transmission pieces 223 to move back to back, and the two second transmission pieces 223 respectively push the two locking pieces 221 matched with the two second transmission pieces to move back to back, and because the positioning locking nail 4 is provided with a clamping groove corresponding to the V-shaped convex surface of the locking piece 221, when the positioning locking nail 4 passes through the positioning locking pin hole on the holder cover plate 23 and is arranged in the accommodating groove 211, the V-shaped convex surface of the locking piece 221 can be locked with the clamping groove, so that the quick fixation between the quick-change plate 3 and the locking mechanism 2 is realized; in principle, the separation between the quick-change plate 3 and the locking mechanism 2 can be realized only by screwing out the jackscrew 5 and shaking the quick-change plate 3, but in order to better realize the separation process, a reset mechanism is required to be arranged on the locking slide bar group 22, the reset mechanism comprises a spring and a spring positioning pin, and two ends of the spring are respectively arranged in the two locking parts at the same side and are fixed through the spring positioning pin; when the jackscrew 5 is screwed in, the spring is in a stretching state; when the jackscrew 5 is screwed out, the locking slide bar group 22 returns to the original position under the action of the pulling force; it should be noted that, the stroke of the jackscrew 5 should not be too large, and it is preferable to implement the locking or releasing action in half a turn, but not limited to this, the operation is more convenient due to the small stroke.

The number of the positioning locking pin holes arranged on the clamp seat cover plate 23 is four, the four holes are distinguished and divided into two positioning hole groups and two auxiliary hole groups, and the difference of the hole positions between the two groups is 10mm, so that the anti-reverse effect is realized. Wherein the positioning hole group plays a role in positioning and locking; the auxiliary hole group plays an auxiliary clamping role. Therefore, the quick positioning and clamping function can be realized, and the quick change plate can be prevented from being reversely mounted.

Fig. 4 shows a schematic diagram of the connection relationship between the insert and the quick-change clamp, and it can be seen from the diagram that since the quick-change plate 3 is provided with a plurality of waist-shaped grooves, and the waist-shaped grooves are internally provided with the sliding blocks with threaded holes, functional inserts of different specifications can be locked and attached to the quick-change plate 3 by adjusting the positions of the sliding blocks, so as to realize positive locking, negative locking and clamping and attaching. In addition, when the workpiece is replaced, only the jackscrew 5 needs to be loosened, and the quick-change plate 3 assembly with the embedded block installed under the wire is replaced; it should be noted that the machining reference, i.e. the workpiece coordinate system, is arranged on the hole center and the upper surface of the auxiliary hole group, and is not changed later, so that the workpiece can be quickly changed with high precision, and the workpiece coordinate system does not need to be redesigned when the workpiece is changed every time.

The above description is only a preferred embodiment of the invention, and is not intended to limit the invention, and any equivalent replacement and modification made by those skilled in the art without departing from the spirit and scope of the invention are deemed to fall within the protection scope of the invention.

Claims

1. The utility model provides a five quick change anchor clamps of quick-witted for processing of large-scale cold stamping automobile die insert which characterized in that: the quick-change plate assembly machine comprises a base (1) connected with a five-axis machine tool, wherein a locking mechanism (2) is in threaded connection with the base (1), and the quick-change plate (3) is quickly assembled and separated from the locking mechanism (2) through a positioning locking nail (4) in threaded connection with the quick-change plate;

the locking mechanism (2) comprises a holder body (21), the upper end of the holder body (21) is provided with a containing groove (211), and a locking slide bar group (22) is arranged in the containing groove; the clamping seat cover plate (23) is connected with the clamping seat body (21) through bolts and limits the locking slide bar group (22) in the containing groove (211);

the locking sliding strip group (22) comprises a locking piece (221), a first transmission piece (222) and a second transmission piece (223); one end of each locking piece (221) and one end of each second transmission piece (223) are provided with V-shaped convex surfaces, and the other ends of the locking pieces and the second transmission pieces are provided with inclined surfaces; one end of the first transmission piece (222) is provided with a plane, and the other end of the first transmission piece is provided with a V-shaped convex surface;

the V-shaped convex surface of the first transmission piece (222) is matched with the inclined surfaces of the two second transmission pieces (223), and the V-shaped convex surface of each second transmission piece (223) in the two second transmission pieces (223) is respectively matched with the inclined surfaces of the two locking pieces (221); the plane of the first transmission piece (222) is matched with the jackscrew (5), and the jackscrew (5) is in threaded connection with the inside of the holder body (21);

the inclined surfaces of the two locking pieces (221) form a V-shaped recess, and the V-shaped convex surface of the second transmission piece (223) is embedded in the V-shaped recess;

and a clamping groove corresponding to the V-shaped convex surface of the locking part (221) is formed in the positioning locking nail (4).

2. The five-axis machine quick-change clamp for machining the insert of the large-sized cold stamping automobile die according to claim 1, which is characterized in that: and the locking sliding strip group (22) is also provided with a resetting mechanism.

3. The five-axis machine quick-change clamp for machining the insert of the large-sized cold stamping automobile die according to claim 2, wherein the five-axis machine quick-change clamp comprises: the reset mechanism comprises a spring and a spring positioning pin, wherein two ends of the spring are respectively arranged on two locking pieces (221) forming a V-shaped recess and are fixed through the spring positioning pin.

4. The five-axis machine quick-change clamp for machining the insert of the large-sized cold stamping automobile die according to claim 1, which is characterized in that: the quick-change plate (3) is provided with a plurality of waist-shaped grooves, sliding blocks are arranged in the waist-shaped grooves, plates with threaded holes are arranged on the sliding blocks, or the quick-change plate (3) is a plate with matrix threaded holes.