CN210147535U

CN210147535U - Machining positioning fixture

Info

Publication number: CN210147535U
Application number: CN201920974738.6U
Authority: CN
Inventors: 刘湘鄂
Original assignee: Huizhou Zhongshi Industrial Co Ltd
Current assignee: Huizhou Zhongshi Industrial Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-03-17
Anticipated expiration: 2029-06-26

Abstract

The utility model belongs to the technical field of machining, especially, a machining positioning fixture, the on-line screen storage device comprises a base, the mounting groove has been seted up at the top of base, the threaded rod is installed to the mounting groove internal rotation, symmetrical screw thread installs two installation pieces on the threaded rod, and the inner wall sliding connection of installation piece and mounting groove, the installation piece extends to the mounting groove and fixed block that fixed mounting has outward, and U type groove has all been seted up to one side that two fixed blocks are close to each other, U type inslot rolling mounting has a plurality of balls, four sliding trays have been seted up to the symmetry on the inner wall in U type groove, fixed mounting has the slide bar in the sliding tray, and slidable mounting has same mounting panel on two corresponding slide bars, the sliding tray is equipped with the. The utility model is simple in operation, the practicality is strong, can fix a position irregular work piece, and the location is firm, improves machining efficiency and quality.

Description

Machining positioning fixture

Technical Field

The utility model relates to a machining technical field especially relates to a machining positioning fixture.

Background

Machining refers to a process of changing the physical dimensions or properties of a workpiece by a mechanical device. According to the difference of the processing mode, the processing method can be divided into cutting processing and pressure processing, in the mechanical processing process, a workpiece needs to be positioned, and in the prior art, the workpiece is positioned through a positioning clamp.

However, in the prior art, when the positioning jig is used for positioning an irregular workpiece, since an irregular workpiece fixing surface cannot be kept horizontal and has a certain inclination angle, the workpiece is easy to fall off, and the machining efficiency and quality are reduced, so that the positioning jig for machining is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a machining positioning fixture.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a machining positioning fixture comprises a base, wherein a mounting groove is formed in the top of the base, a threaded rod is rotatably mounted in the mounting groove, two mounting blocks are symmetrically and threadedly mounted on the threaded rod and are in sliding connection with the inner wall of the mounting groove, the mounting blocks extend out of the mounting groove and are fixedly mounted with fixed blocks, a U-shaped groove is formed in one side, close to each other, of each of the two fixed blocks, a plurality of balls are rotatably mounted in the U-shaped groove, four sliding grooves are symmetrically formed in the inner wall of the U-shaped groove, sliding rods are fixedly mounted in the sliding grooves, the same mounting plate is slidably mounted on the two corresponding sliding rods, a spring is slidably sleeved on each sliding rod, one end of each spring is fixedly connected with the mounting plate, the other end of each spring is fixedly connected with the inner wall of the corresponding sliding groove, and, one end of the threaded rod extends to the outside of the mounting groove and is fixedly provided with a handle.

Preferably, two sections of threads are arranged on the threaded rod, and the thread turning directions of the two sections of threads are opposite.

Preferably, a threaded hole is formed in the mounting block, and the inner wall of the threaded hole is in threaded connection with the threaded rod.

Preferably, a rotating groove is formed in the inner wall of one side, away from the handle, of the mounting groove, a first bearing is fixedly sleeved on the threaded rod, and the outer ring of the first bearing is fixedly connected with the inner wall of the rotating groove.

Preferably, a rotating hole is formed in the inner wall of one side, close to the handle, of the mounting groove, a second bearing is fixedly sleeved on the threaded rod, and the outer ring of the second bearing is fixedly connected with the inner wall of the rotating hole.

Preferably, the bottom inner wall of the mounting groove is provided with a limiting groove, the mounting block is fixedly provided with a limiting block, and the limiting block is connected with the inner wall of the limiting groove in a sliding manner.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the device is matched with a base, a mounting groove, a threaded rod, mounting blocks, fixing blocks, a U-shaped groove, balls, a spring, fixing rods and a handle, when in use, an irregular workpiece is placed at the top of the base and is positioned between the two fixing blocks, the handle is rotated to drive the threaded rod to rotate, the two mounting blocks are driven to move close to each other in the mounting groove under the action of two sections of threads with opposite rotation directions, the two mounting blocks drive the two fixing blocks to move close to each other, because the workpiece is irregular in shape, a fixing surface of the workpiece has a certain inclination angle, when the fixing blocks are close to the workpiece, one fixing rod on the fixing block contacts the workpiece firstly, so that the fixing rod slides in the U-shaped groove to push the balls to roll, the balls push the other fixing rod to move to enable the other fixing rod to close to contact the workpiece, after positioning is, under the action of the elastic force of the spring, the two fixing rods return to the original positions, so that the next positioning is facilitated;

the utility model is simple in operation, the practicality is strong, can fix a position irregular work piece, and the location is firm, improves machining efficiency and quality.

Drawings

FIG. 1 is a front sectional view of the present invention;

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

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic view of the positioning of the irregular workpiece according to the present invention;

in the figure: 1. a base; 2. mounting grooves; 3. a threaded rod; 4. mounting blocks; 5. a fixed block; 6. a U-shaped groove; 7. a ball bearing; 8. a sliding groove; 9. a slide bar; 10. mounting a plate; 11. a spring; 12. fixing the rod; 13. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a machining positioning fixture comprises a base 1, wherein the top of the base 1 is provided with a mounting groove 2, a threaded rod 3 is rotatably mounted in the mounting groove 2, two mounting blocks 4 are symmetrically and threadedly mounted on the threaded rod 3, the mounting blocks 4 are slidably connected with the inner wall of the mounting groove 2, the mounting blocks 4 extend out of the mounting groove 2 and are fixedly mounted with fixed blocks 5, one sides of the two fixed blocks 5, which are close to each other, are respectively provided with a U-shaped groove 6, a plurality of balls 7 are rotatably mounted in the U-shaped groove 6, the inner wall of the U-shaped groove 6 is symmetrically provided with four sliding grooves 8, sliding rods 9 are fixedly mounted in the sliding grooves 8, two corresponding sliding rods 9 are slidably mounted with a same mounting plate 10, a spring 11 is slidably sleeved on the sliding rod 9, one end of the spring 11 is fixedly connected with the mounting plate 10, the other end of the spring 11 is fixedly connected with the, one end of the threaded rod 3 extends out of the mounting groove 2 and is fixedly provided with a handle 13;

the threaded rod 3 is provided with two sections of threads, the thread turning directions of the two sections of threads are opposite, the mounting block 4 is provided with a threaded hole, the inner wall of the threaded hole is in threaded connection with the threaded rod 3, the inner wall of one side of the mounting groove 2, which is far away from the handle 13, is provided with a rotating groove, the threaded rod 3 is fixedly sleeved with a first bearing, the outer ring of the first bearing is fixedly connected with the inner wall of the rotating groove, the inner wall of one side of the mounting groove 2, which is close to the handle 13, is provided with a rotating hole, the threaded rod 3 is fixedly sleeved with a second bearing, the outer ring of the second bearing is fixedly connected with the inner wall of the rotating hole, the inner wall of the bottom of the mounting groove 2 is provided with a limiting groove, the mounting block 4 is fixedly provided with a limiting block, the limiting block is in sliding connection with the inner wall of the limiting groove, when the positioning device is used, an irregular workpiece is placed at the top of the base 1 and is positioned between the two fixing blocks 5, the handle 13 is rotated, the handle 13 drives the threaded rod 3 to rotate, under the action of the two threads with opposite rotation directions, the two mounting blocks 4 are driven to move close to each other in the mounting groove 2, the two mounting blocks 4 drive the two fixing blocks 5 to move close to each other, because the workpiece is in an irregular shape, a fixing surface of the workpiece has a certain inclination angle, when the fixing blocks 5 are close to the workpiece, one fixing rod 12 on the fixing blocks 5 contacts the workpiece firstly, so that the fixing rod 12 slides in the U-shaped groove 6, the ball 7 is pushed to roll, the ball 7 pushes the other fixing rod 12 to move, so that the fixing rod is close to and contacts the workpiece, after the positioning is completed, the two fixing rods 12 are both contacted with the workpiece, when the workpiece is taken down, under the elastic, the utility model is simple in operation, the practicality is strong, can fix a position irregular work piece, and the location is firm, improves machining efficiency and quality.

The working principle is as follows: when the fixing device is used, an irregular workpiece is placed at the top of the base 1 and is positioned between the two fixing blocks 5, the handle 13 is rotated, the handle 13 drives the threaded rod 3 to rotate, under the action of the two threads with opposite rotation directions, the two mounting blocks 4 are driven to move close to each other in the mounting groove 2, the two mounting blocks 4 drive the two fixing blocks 5 to move close to each other, because the workpiece is in an irregular shape, a fixing surface of the workpiece has a certain inclination angle, when the fixing blocks 5 are close to the workpiece, a fixing rod 12 on the fixing blocks 5 contacts the workpiece firstly, so that the fixing rod 12 slides in the U-shaped groove 6, the ball 7 is pushed to roll, the ball 7 pushes the other fixing rod 12 to move, so that the fixing rod is close to and contacts the workpiece, and after positioning is completed, the;

when the workpiece is taken down, the two fixing rods 12 return to the original positions under the action of the elastic force of the spring 11, so that the next positioning is facilitated.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a machining positioning fixture, includes base (1), its characterized in that: mounting groove (2) have been seted up at the top of base (1), threaded rod (3) are installed to mounting groove (2) internal rotation, two installation piece (4) are installed to symmetrical screw thread on threaded rod (3), and the inner wall sliding connection of installation piece (4) and mounting groove (2), installation piece (4) extend to mounting groove (2) outer and fixed mounting fixed block (5), U type groove (6) have all been seted up to one side that two fixed block (5) are close to each other, rolling mounting has a plurality of ball (7) in U type groove (6), four sliding tray (8) have been seted up to the symmetry on the inner wall in U type groove (6), fixed mounting has slide bar (9) in sliding tray (8), and sliding mounting has same mounting panel (10) on two corresponding slide bar (9), sliding sleeve is equipped with spring (11) on slide bar (9), the one end and mounting panel (10) fixed connection of spring (11), the other end of spring (11) and the inner wall fixed connection of sliding tray (8), fixed mounting has dead lever (12) on mounting panel (10), the one end of threaded rod (3) extends to mounting groove (2) outer and fixed mounting has handle (13).

2. The machining positioning fixture of claim 1, wherein: two sections of threads are arranged on the threaded rod (3), and the thread turning directions of the two sections of threads are opposite.

3. The machining positioning fixture of claim 1, wherein: the mounting block (4) is provided with a threaded hole, and the inner wall of the threaded hole is in threaded connection with the threaded rod (3).

4. The machining positioning fixture of claim 1, wherein: the handle (13) is kept away from in mounting groove (2) and has been seted up on one side inner wall and rotated the groove, fixed cover is equipped with first bearing on threaded rod (3), the outer lane of first bearing and the inner wall fixed connection who rotates the groove.

5. The machining positioning fixture of claim 1, wherein: the mounting groove (2) is close to and has seted up on one side inner wall of handle (13) and rotated the hole, fixed cover is equipped with the second bearing on threaded rod (3), the outer lane of second bearing and the inner wall fixed connection who rotates the hole.

6. The machining positioning fixture of claim 1, wherein: the mounting structure is characterized in that a limiting groove is formed in the inner wall of the bottom of the mounting groove (2), a limiting block is fixedly mounted on the mounting block (4), and the limiting block is connected with the inner wall of the limiting groove in a sliding mode.