CN213258287U

CN213258287U - Automatic adjusting structure of positioning fixture

Info

Publication number: CN213258287U
Application number: CN202021369575.8U
Authority: CN
Inventors: 刘波; 杨永泽; 陶通涓; 李康; 李强
Original assignee: Guangdong Netna Intelligent Equipment Co ltd
Current assignee: Guangdong Netna Intelligent Equipment Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-05-25
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses an automatic adjusting structure of a positioning clamp, which comprises a base, wherein an adjusting plate is arranged on the base, a positioning plate and a pushing mechanism are arranged on the adjusting plate, the pushing mechanism is pressed against the positioning plate, and an installation part for placing a workpiece is arranged on the positioning plate; the pushing mechanism is provided with an adjusting mechanism, the adjusting mechanism penetrates through the positioning plate, and when a workpiece is placed on the mounting portion, the pushing mechanism pushes the positioning plate to move, so that the adjusting mechanism is abutted against the workpiece; the base is further provided with a guide rail, and the adjusting plate is movably arranged on the guide rail. The utility model has the advantages of easy operation, the work piece clamping that can adapt to different errors automatically, the clamping size of having solved traditional positioning fixture is fixed, because there is the error in the size of work piece, leads to the unable clamping work piece of positioning fixture, needs the clamping that the size of adjustment work piece could realize the work piece, wastes time and energy, damages the problem of work piece easily.

Description

Automatic adjusting structure of positioning fixture

Technical Field

The utility model relates to a clamping anchor clamps field refers in particular to a positioning fixture's automatically regulated structure.

Background

The positioning fixture refers to a device for fixing a machined workpiece in a machine manufacturing process so that the workpiece is fixed at a correct position for the workpiece to be subjected to construction or detection, and generally, the positioning fixture is composed of a positioning element, a clamping device, a guide element, a connecting element and a fixture body.

Along with the continuous progress of science and technology, the continuous development of society, the enterprise also becomes thereupon high to positioning fixture's requirement when machining, follows traditional manual operation location and evolves gradually into present adoption pneumatics or hydraulic mode quick clamping location, has promoted the clamping efficiency of work piece widely, has banned the process of manual clamping work piece, has reduced the clamping cost of work piece.

Although the existing positioning fixture can realize quick clamping of a machined workpiece, the clamping efficiency is improved, and the production cost is reduced, the workpiece is placed into the clamping fixture after the clamping size of the fixture is firstly fixed in the clamping process, and due to the fact that the size of the machined workpiece has an error range, the size of each machined workpiece is consistent with the clamping size of the positioning fixture, the workpiece is too small in size, the positioning fixture cannot clamp the workpiece, or the workpiece is too large in size, the workpiece cannot be clamped in the positioning fixture, clamping needs to be carried out on the workpiece through a gasket pad, or the workpiece is clamped after the size of the workpiece is cut, the problems that the workpiece is complex in clamping, time and labor are wasted are caused, the workpiece is easily damaged by clamping on the workpiece through the gasket pad, and the workpiece is easily damaged by shaking in the machining process, so that the machining.

Therefore, in order to solve the technical problems in the prior art, it is necessary to develop a positioning fixture adjusting structure capable of automatically adjusting the clamping size of a positioning fixture, so as to solve the problem that clamping cannot be performed due to errors in clamping a workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a positioning fixture's automatically regulated structure, the clamping size of solving traditional positioning fixture is fixed, because there is the error in the size of work piece, leads to the unable clamping work piece of positioning fixture, needs the clamping that the size of adjustment work piece could realize the work piece, wastes time and energy, damages the problem of work piece easily.

In order to achieve the above object, the utility model provides a pair of positioning fixture's automatically regulated structure, specific embodiment is as follows:

an automatic adjusting structure of a positioning clamp comprises a base, wherein an adjusting plate is arranged on the base, a positioning plate and a pushing mechanism are arranged on the adjusting plate, the pushing mechanism abuts against the positioning plate, and an installation part for placing a workpiece is arranged on the positioning plate; the pushing mechanism is provided with an adjusting mechanism, the adjusting mechanism penetrates through the positioning plate, and when the workpiece is placed on the mounting part, the pushing mechanism pushes the positioning plate to move so that the adjusting mechanism is abutted against the workpiece; the base is further provided with a guide rail, and the adjusting plate is movably arranged on the guide rail.

At present, the clamping size of a positioning fixture in the prior art is usually fixed and unchanged, after the position of the positioning fixture is adjusted, a workpiece to be clamped is placed on the positioning fixture, and the workpiece is rapidly clamped by utilizing an air pressure or hydraulic mode.

The utility model discloses an automatically regulated structure of positioning fixture, through set up mainly by pushing mechanism on positioning fixture, the regulation structure that regulating plate and locating plate are constituteed, utilize pushing mechanism to promote the locating plate, make the locating plate drive the regulating plate displacement on the guide rail, make adjustment mechanism compress tightly all the time on the work piece under pushing mechanism's promotion, realized that positioning fixture is applicable to the function of the same reference location centre gripping of the work piece of different error ranges, positioning fixture's use convenience has been improved, the problem that exists among the above-mentioned prior art has been solved effectively.

As a further improvement, the pushing mechanism further comprises a pushing cylinder and a push plate, a piston rod on the pushing cylinder is connected with the push plate, and the push plate is provided with the adjusting mechanism.

Further, adjustment mechanism includes bearing, elastic component, briquetting and guiding axle, the bearing is installed in the push pedal, the guiding axle passes the bearing with the briquetting is connected, the briquetting sets up on the locating plate, the elastic component cup joints in on the guiding axle, just the both ends of elastic component are contradicted respectively in on briquetting and the push pedal.

Furthermore, the push plate is provided with an adjusting hole, and the bearing is inserted and fixed in the adjusting hole.

Furthermore, an adjusting groove is formed in the positioning plate, and the pressing block is movably arranged in the adjusting groove.

As a further improvement, the adjusting plate is provided with a mounting groove, the push plate is arranged in the mounting groove, one side of the mounting groove is provided with an opening, and corresponds to the other side of the opening is the positioning plate.

As a further improvement, the installation part is provided with a first groove for placing the workpiece, and the positioning plate is provided with a second groove matched with the first groove.

As a further improvement, the adjusting plate bottom is equipped with the sliding block, the sliding block is mobile to be cup jointed on the guide rail.

As a further improvement of the utility model, still be equipped with the mounting bracket on the base, push cylinder installs on the mounting bracket, just the piston rod passes the opening with the push pedal is connected.

Furthermore, the piston rod is provided with a rubber push block, and when the push cylinder operates, the rubber push block is pressed against the push plate under the push of the piston rod.

Based on the technical scheme, the utility model discloses for prior art, following beneficial effect has:

1. through utilizing the push cylinder function to promote the mounting groove internal displacement of push pedal on the regulating plate, make the push pedal displacement to when inconsistent with the locating plate, under the continuous pushing action of push cylinder, the locating plate drives the sliding block of regulating plate bottom and at the displacement of guide rail within range, can be under the fixed condition of the location benchmark of work piece, according to the actual size of work piece, adjust the position of regulating plate, and then make the briquetting on the adjustment mechanism compress tightly on the work piece, the clamping of realization work piece is fixed, be applicable to same size specification, but the centre gripping of the work piece that has different error ranges is fixed.

2. When a workpiece is clamped, the pressing plate on the adjusting mechanism can move up and down in the adjusting groove by utilizing the elastic acting force of the elastic piece, so that the pressing plate can be always pressed on the workpiece, the positioning clamp can automatically adapt to a small error value still existing after the adjusting plate is adjusted, manual adjustment is not needed, and the clamping efficiency of the workpiece and the stability after clamping are improved.

3. Through set up first cell body and second cell body on installation department and locating plate respectively for the work piece can directly be placed on the installation department before the clamping, the work piece respectively with first cell body and second cell body joint, further improve the clamping efficiency of work piece and the stability after the clamping.

4. Through set up the rubber ejector pad on the piston rod at push cylinder, utilize the cushioning effect of rubber ejector pad, improve pushing mechanism's life, prevent that the piston rod from directly promoting the push pedal and leading to piston rod and push pedal to use the condition emergence that causes the damage for a long time.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a side view of the present invention;

FIG. 4 is a side cross-sectional view of the present invention;

fig. 5 is a partial enlarged view of a portion a of fig. 4 according to the present invention;

fig. 6 is a schematic structural view of the workpiece clamping of the present invention.

Detailed Description

The automatic adjusting structure of the positioning fixture of the present invention is described with reference to the accompanying drawings.

As shown in fig. 1-3, the automatic adjusting structure of the positioning fixture comprises a base 1, wherein an adjusting plate 2 is arranged on the base 1, and the adjusting plate 2 can move on the base 1.

Specifically, be equipped with guide rail 7 on the

base

1, 2 bottoms of regulating plate are equipped with sliding block 21, sliding block 21 is the mobile cup joint on guide rail 7, through sliding block 21 displacement on guide rail 7, drive regulating plate 2 and follow sliding block 21 displacement in the stroke range of guide rail 7.

Wherein, be equipped with mounting groove 22 on the regulating plate 2, a side of mounting groove 22 is equipped with the opening, correspond open-ended opposite side be equipped with the locating plate 3 that regulating plate 2 integrated into one piece set up.

Specifically, still include pushing mechanism 4, pushing mechanism 4 includes adjustment mechanism 41, push cylinder 42 and push pedal 43, adjustment mechanism 41 sets up on the push pedal 43, push cylinder 42 fixes on the base 1, push pedal 43 sets up in the mounting groove 22, just push cylinder 42 with push pedal 43 is connected through push cylinder 42's piston rod 421, and the push pedal 43 is promoted to displace in mounting groove 22 through push cylinder 42 operation, makes push pedal 43 contradicts on locating plate 3 for locating plate 3 drives regulating plate 2 and displaces at the within range of guide rail 7 under push cylinder 42's pushing action.

Specifically, be equipped with mounting bracket 11 on base 1, push cylinder 42 adopt screw or bolt mode with mounting bracket 11 is connected, makes push cylinder 42 is fixed on base 1.

Specifically, the piston rod 421 of push cylinder 42 is connected with push pedal 43, just the cover is equipped with rubber ejector pad 422 on the piston rod 421, works as push cylinder 42 operates and makes piston rod 421 promotes during the displacement of push pedal 43, rubber ejector pad 422 is contradicted push pedal 43 is last, plays the cushioning effect, avoids piston rod 421 directly to contradict with push pedal 43, causes the condition emergence that push pedal 43 or piston rod 421 damaged.

Specifically, the end of the positioning plate 3 is provided with a mounting portion 6.

At least two adjusting mechanisms 41 are provided in the embodiment, and a user can set two or more adjusting mechanisms 41 according to the use requirement, so as to assist the positioning fixture in clamping the workpiece.

As shown in fig. 4-5, the adjusting mechanism 41 includes a bearing 411, an elastic member 412, a pressing block 413, and a guiding shaft 414, the bearing 411 is disposed in the pushing plate 43, the guiding shaft 414 is inserted into the bearing 411 and inserted into the pressing block 413 through the bearing 411, the elastic member 412 is sleeved on the guiding shaft 414, and two end portions of the elastic member 412 respectively abut against the pushing plate 43 and the positioning plate 3.

Specifically, an adjusting hole 431 is formed in the push plate 43, and the bearing 411 is inserted and fixed in the adjusting hole 431.

Specifically, an adjusting groove 31 is formed in the positioning plate 3, the pressing block 413 is disposed in the adjusting groove 31, and the pressing block 413 moves up and down in the adjusting groove 31 under the elastic force of the elastic member 412.

In the present embodiment, the elastic member 412 may be a spring, a rubber spring, or the like, and any elastic element that can realize the up-and-down movable adjustment of the pressing piece 413 may be used as the elastic member in the present embodiment, and the present embodiment is not limited to using the spring or the rubber elasticity as the elastic member 412.

As shown in fig. 6, be equipped with first cell body 61 on the installation department 6, be equipped with second cell body 32 on the locating plate 3, still include work piece 5, work piece 5 is placed when installing department 6, work piece 4 respectively with first cell body 61 and second cell body 32 joint.

In the embodiment, the first groove body 61 and the second groove body 32 may be set to be single or multiple according to the number of clamped workpieces, so that the positioning fixture can clamp the workpieces independently or clamp multiple workpieces simultaneously.

Wherein, still be equipped with baffle 23 on the both sides portion on the mounting groove 22, baffle 23 is used for restricting the position of push pedal 43 displacement in mounting groove 22 prevents push pedal 43 from producing and rocking.

At least two adjusting structures are provided in this embodiment, and the two ends of the workpiece 5 are respectively clamped.

The utility model discloses a work piece centre gripping principle of adjusting structure:

firstly, a workpiece 5 is placed on the installation part 6, and the workpiece 5 is respectively clamped in the first groove body 61 and the second groove body 32;

then, starting the pushing cylinders 42 of the adjusting structures on the two sides of the workpiece 5 to operate, and the piston rod 421 pushes the pushing plate 43 to displace and abut against the positioning plate 3, so that the positioning plate 3 drives the adjusting plate 2 to displace within the stroke range of the guide rail 7 under the pushing of the pushing cylinders 42 until the adjusting mechanism 41 abuts against the workpiece 5;

finally, the pressing piece 413 of the adjusting mechanism 41 is pressed against the workpiece 5 under the elastic force of the elastic piece 412, and the workpiece 5 is clamped from both ends, so that the workpiece 5 is clamped.

The utility model discloses an adjusting structure of positioning fixture has easy operation, can adapt to the advantage of the work piece clamping of different errors automatically, and the clamping size of having solved traditional positioning fixture is fixed, because there is the error in the size of work piece, leads to the unable clamping work piece of positioning fixture, needs the clamping that the size of adjustment work piece could realize the work piece, wastes time and energy, damages the problem of work piece easily.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. An automatic adjusting structure of a positioning clamp comprises a base (1) and is characterized in that an adjusting plate (2) is arranged on the base (1), a positioning plate (3) and a pushing mechanism (4) are arranged on the adjusting plate (2), the pushing mechanism (4) is abutted against the positioning plate (3), and an installation part (6) for placing a workpiece (5) is arranged on the positioning plate (3); the pushing mechanism (4) is provided with an adjusting mechanism (41), the adjusting mechanism (41) penetrates through the positioning plate (3), and when the workpiece (5) is placed on the mounting portion (6), the pushing mechanism (4) pushes the positioning plate (3) to move, so that the adjusting mechanism (41) is abutted against the workpiece (5); the base (1) is further provided with a guide rail (7), and the adjusting plate (2) can be movably arranged on the guide rail (7).

2. The automatic adjusting structure of claim 1, wherein the pushing mechanism (4) further comprises a pushing cylinder (42) and a pushing plate (43), a piston rod (421) on the pushing cylinder (42) is connected with the pushing plate (43), and the adjusting mechanism (41) is arranged on the pushing plate (43).

3. The automatic adjusting structure of claim 2, wherein the adjusting mechanism (41) comprises a bearing (411), an elastic member (412), a pressing block (413) and a guide shaft (414), the bearing (411) is mounted on the push plate (43), the guide shaft (414) passes through the bearing (411) and is connected with the pressing block (413), the pressing block (413) is arranged on the positioning plate (3), the elastic member (412) is sleeved on the guide shaft (414), and two ends of the elastic member (412) respectively abut against the pressing block (413) and the push plate (43).

4. The automatic adjusting structure of claim 3, characterized in that the push plate (43) is provided with an adjusting hole (431), and the bearing (411) is inserted and fixed in the adjusting hole (431).

5. The automatic adjusting structure of claim 3, characterized in that the positioning plate (3) is provided with an adjusting groove (31), and the pressing block (413) is movably arranged in the adjusting groove (31).

6. The automatic adjusting structure of claim 2, characterized in that the adjusting plate (2) is provided with a mounting groove (22), the push plate (43) is disposed in the mounting groove (22), one side of the mounting groove (22) is provided with an opening, and the other side corresponding to the opening is the positioning plate (3).

7. The automatic adjusting structure of claim 1, wherein a first groove body (61) for placing the workpiece (5) is arranged on the mounting portion (6), and a second groove body (32) matched with the first groove body (61) is arranged on the positioning plate (3).

8. The automatic adjusting structure of claim 1, characterized in that a sliding block (21) is arranged at the bottom of the adjusting plate (2), and the sliding block (21) is movably sleeved on the guide rail (7).

9. The automatic adjusting structure of claim 6, characterized in that a mounting frame (11) is further provided on the base (1), the pushing cylinder (42) is mounted on the mounting frame (11), and the piston rod (421) passes through the opening to be connected with the pushing plate (43).

10. The automatic adjusting structure of claim 9, wherein the piston rod (421) is provided with a rubber push block (422), and when the pushing cylinder (42) operates, the rubber push block (422) is pressed against the push plate (43) under the pushing of the piston rod (421).