CN220240086U

CN220240086U - Portable three-jaw positioning mechanism

Info

Publication number: CN220240086U
Application number: CN202321674972.XU
Authority: CN
Inventors: 何从好; 吕大伦; 冯超
Original assignee: Wuhu Antaopu Intelligent Equipment Co ltd
Current assignee: Wuhu Antaopu Intelligent Equipment Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-12-26
Anticipated expiration: 2033-06-29

Abstract

The utility model provides a portable three-jaw positioning mechanism, which belongs to the technical field of machining and comprises a bottom plate and a three-jaw tool, wherein the three-jaw tool comprises an air cylinder and three groups of mechanical arms, each mechanical arm comprises a movable arm, a continuous arm is arranged on the outer side of each movable arm, and a contact plate is arranged on the outer side of each continuous arm; the contact plate is close to and even takes arm one side center department to install the butt joint subassembly, and the butt joint subassembly is including the inserted block, even the lateral surface center department of taking the arm is provided with the holding tank, installs two compression springs and a movable block with holding tank inner wall sliding connection in the holding tank, through the contact plate with even take the space cooperation movable block and compression spring isotructure between the arm, can have certain elastic space when radial rotation of contact plate opens, not only can firmly fix the tube-shape machined part, can prevent simultaneously that too much opening from leading to the tube-shape machined part to warp, guarantees the processingquality of tube-shape machined part.

Description

Portable three-jaw positioning mechanism

Technical Field

The utility model mainly relates to the technical field of machining, in particular to a portable three-jaw positioning mechanism.

Background

When the lathe is used for machining a cylindrical workpiece, the workpiece is clamped and positioned firstly, and a three-jaw chuck is adopted in the existing lathe equipment for clamping the workpiece; specifically, the chuck main body is slidably connected with three clamping jaws which are uniformly distributed along the circumferential direction of the central shaft of the chuck main body; when clamping the cylindrical workpiece: firstly, three claws extend into a cylindrical workpiece; then, the three jaws are synchronously opened along the radial direction of the chuck main body until the clamping ends of the three jaws are abutted against the inner wall surface on the periphery side of the cylindrical workpiece, so that the workpiece can be clamped.

Through searching, a lathe three-jaw clamp mechanism with an automatic tensioning and positioning function and with the application number of CN201920657905.4 can automatically perform tensioning and positioning functions on a cylindrical workpiece in clamping, but the device has certain shortcomings, such as the device enables three jaw blocks to be in contact with the cylindrical workpiece to achieve positioning, and the same jaw block is used for fixing different cylindrical workpieces, so that the jaw blocks are required to be continuously and radially opened, and stable clamping is achieved, but the jaw blocks are easily caused to be excessively opened, so that the cylindrical workpiece is deformed, and the processing quality of the cylindrical workpiece is affected.

Disclosure of Invention

The utility model mainly provides a portable three-jaw positioning mechanism which is used for solving the technical problems in the background technology.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a portable three-jaw positioning mechanism, includes bottom plate and three-jaw frock, the bottom plate is installed in the bottom of three-jaw frock, the top of three-jaw frock, three-jaw frock is including cylinder and three group's arm, the arm is including the movable arm, the arm is taken in the outside of movable arm and is installed in succession, the contact plate is installed in the outside of taking the arm;

the contact plate is close to and even takes arm one side center department to install the butt joint subassembly, the butt joint subassembly is including the inserted block, even take arm's lateral surface center department to be provided with the holding tank, install two compression springs and a movable block with holding tank inner wall sliding connection in the holding tank, the lateral surface of movable block is provided with the butt joint groove with the inserted block looks adaptation, the inserted block is docked with the movable block.

Furthermore, an assembling plate is further arranged on one side of the bottom plate, and the assembling plate is connected with the bottom plate through a plurality of fixing bolts.

Further, the tool housing is further installed at the top of the three-jaw tool, the inside of the tool housing is fixedly connected with the side edge of the air cylinder through a screw rod, and a hanging ring is arranged at the top of the tool housing.

Further, the lifting cylinder is installed at the top of cylinder, three claw frock still includes three fixing base, and is radial distribution fixed mounting on the bottom plate for the cylinder with the fixing base, the arm still includes H type linkage piece, the top one end and the lifting cylinder side rotation of H type linkage piece are connected, the bottom one end and the movable arm top one end rotation of H type linkage piece are connected, movable arm bottom one end and fixing base rotation are connected.

Further, a plurality of buffer rubber pads are equidistantly arranged on one surface, close to the connecting and carrying arm, of the contact plate.

Further, the butt joint subassembly is still including two pressing blocks, two pressing blocks run through respectively and install inside the contact plate both sides, the both sides of inserted block all are provided with the appearance chamber groove, just hold the chamber groove and be close to pressing block one side and be provided with the opening, hold the intracavity and install compression spring and buckle piece, the connecting block is installed to inside one side of buckle piece, the connecting block is connected with pressing block, the both sides of butt joint groove are provided with the groove with buckle piece looks adaptation.

Further, the buckle block is of a wedge structure with an inclined surface on the outer side surface.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the structures of the movable block, the compression spring and the like matched with the space between the contact plate and the connecting carrying arm, a certain elastic space is provided when the contact plate radially rotates and expands, so that the cylindrical workpiece can be firmly fixed, deformation of the cylindrical workpiece caused by excessive expansion can be prevented, and the processing quality of the cylindrical workpiece is ensured;

meanwhile, in order to better adapt to cylindrical workpieces with different inner wall shapes, the device can meet better processing requirements through the contact plate convenient to detach and fast to the butt joint assembly.

The utility model will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a three-jaw tooling area structure of the present utility model;

FIG. 3 is an exploded view of the link arm and contact plate structure of the present utility model;

fig. 4 is a schematic cross-sectional view of a docking assembly of the present utility model.

In the figure: 10. three-jaw tooling; 11. a cylinder; 12. a lifting cylinder; 13. h-shaped linkage blocks; 14. a movable arm; 15. a fixing seat; 16. a carrying arm; 161. a receiving groove; 17. a contact plate; 18. a movable block; 181. a butt joint groove; 19. a compression spring; 20. a bottom plate; 30. assembling plates; 40. a tool shell; 41. a hanging ring; 50. a docking assembly; 51. inserting blocks; 511. a cavity containing groove; 52. pressing the blocks; 53. a connecting block; 54. a buckle block; 55. a pressure spring; 60. and buffering the rubber cushion.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

1-4, a portable three-jaw positioning mechanism comprises a bottom plate 20 and a three-jaw tooling 10, wherein the bottom plate 20 is arranged at the bottom of the three-jaw tooling 10, the top of the three-jaw tooling 10 is provided with a cylinder 11 and three groups of mechanical arms, the mechanical arms comprise movable arms 14, the outer sides of the movable arms 14 are provided with connecting and carrying arms 16, and the outer sides of the connecting and carrying arms 16 are provided with contact plates 17;

the contact plate 17 is close to the center of one side of the continuous arm 16 and is provided with a butt joint assembly 50, the butt joint assembly 50 comprises an inserting block 51, the center of the outer side surface of the continuous arm 16 is provided with a containing groove 161, two compression springs 19 and a movable block 18 which is in sliding connection with the inner wall of the containing groove 161 are arranged in the containing groove 161, the outer side surface of the movable block 18 is provided with a butt joint groove 181 which is matched with the inserting block 51, and the inserting block 51 is in butt joint with the movable block 18.

In this embodiment, when the insert block 51 is inserted into the movable block 18, a certain space is reserved between the contact plate 17 and the carrying arm 16, and a telescopic space is reserved.

Specifically, please refer to fig. 1 and fig. 2, an assembling plate 30 is further installed at one side of the bottom plate 20, the assembling plate 30 is connected with the bottom plate 20 through a plurality of fixing bolts, and redundant threaded holes are further formed in the assembling plate 30, so that the fixing connection between the assembling plate 30 and other plates is facilitated, and the fixing connection of the three-jaw tooling 10 on a machine tool can be realized.

Further, the tool housing 40 is further installed at the top of the three-jaw tool 10, the inside of the tool housing 40 is fixedly connected with the side edge of the air cylinder 11 through a screw, the top of the tool housing 40 is provided with the hanging ring 41, the inner structure of the three-jaw tool 10 can be protected through the tool housing 40, lubricating oil between mechanical arms is prevented from being polluted by dust, the operation of a machine is influenced, and the hanging ring 41 can realize convenient transportation of the device.

Specifically, referring to fig. 2, a lifting cylinder 12 is installed at the top of the air cylinder 11, the three-jaw tooling 10 further includes three fixing seats 15, the three fixing seats 15 are radially distributed and fixedly installed on the bottom plate 20 by taking the air cylinder 11 as the center, the mechanical arm further includes an H-shaped linkage block 13, one end of the top of the H-shaped linkage block 13 is rotationally connected with the side edge of the lifting cylinder 12, one end of the bottom of the H-shaped linkage block 13 is rotationally connected with one end of the top of the movable arm 14, and one end of the bottom of the movable arm 14 is rotationally connected with the fixing seats 15; through the operation of cylinder 11, can realize the lift of lift cylinder 12, because the bottom one end of movable arm 14 is restricted by fixing base 15, so when lift cylinder 12 goes up and down, movable arm 14 and H type linkage piece 13 can rotate, and when lift cylinder 12 descends, movable arm 14 can take fixing base 15 as the base point to outside rotation to realize three-jaw location.

Specifically, referring to fig. 3, a plurality of cushion pads 60 are disposed on the surface of the contact plate 17 adjacent to the connecting arm 16 at equal distance, gaps between the contact plate 17 and the connecting arm 16 can be filled with the cushion pads 60, and the cushion pads 60 have elasticity and do not affect the expansion and contraction of the contact plate 17.

Specifically, referring to fig. 3 and fig. 4, the docking assembly 50 further includes two pressing blocks 52, the two pressing blocks 52 are respectively installed inside two sides of the contact plate 17 in a penetrating manner, two sides of the insertion block 51 are respectively provided with a cavity groove 511, one surface of the cavity groove 511, which is close to the pressing block 52, is provided with an opening, a pressure spring 55 and a buckling block 54 are installed in the cavity groove 511, a connecting block 53 is installed at one side of the inside of the buckling block 54, the connecting block 53 is connected with the pressing blocks 52, and grooves matched with the buckling blocks 54 are formed in two sides of the docking groove 181; for better adaptation tubular machined parts of different inner wall shapes, the contact plate 17 that this device can be conveniently dismantled can satisfy better processing demand, when needs change contact plate 17, only need buckle press briquetting 52 and make buckle piece 54 retract, later take out the inserted block 51 from docking slot 181 in can realizing the change of contact plate 17, later insert docking slot 181 in with the inserted block 51 of contact plate 17 of more adaptation tubular machined part inner wall shape, make buckle piece 54 pop out in the inslot of docking slot 181 both sides through pressure spring 55 effort, thereby realize the convenient fixed mounting of contact plate 17.

Further, the fastening block 54 has a wedge structure with an inclined surface on the outer side; the buckle block 54 of the wedge structure can be ejected after completing automatic shrinkage when the insert block 51 is inserted into the docking slot 181, thereby increasing convenience.

The specific operation mode of the utility model is as follows:

when the device is used for processing a cylindrical workpiece, the cylindrical workpiece is placed on the tool shell 40 through the mechanical arm, then the air cylinder 11 is started through the controller, lifting of the lifting cylinder 12 can be achieved through operation of the air cylinder 11, when the lifting cylinder 12 descends, the movable arm 14 can rotate towards the outside by taking the fixed seat 15 as a base point, three-jaw positioning is achieved, the contact plate 17 can be in contact with the inner wall of the cylindrical workpiece at the moment, the contact plate 17 can move towards one end of the continuous carrying arm 16, the movable block 18 can be pushed to move towards the inside of the accommodating groove 161 by the inserting block 51, the compression spring 19 is extruded, the cylindrical workpiece can be firmly fixed through the movable space between the contact plate 17 and the continuous carrying arm 16, and deformation of the cylindrical workpiece caused by excessive opening can be prevented.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.

Claims

1. The utility model provides a portable three-jaw positioning mechanism, includes bottom plate (20) and three-jaw frock (10), its characterized in that, bottom plate (20) are installed in the bottom of three-jaw frock (10), the top of three-jaw frock (10), three-jaw frock (10) are including cylinder (11) and three mechanical arm of group, the mechanical arm is including movable arm (14), link arm (16) are installed in the outside of movable arm (14), link arm (16) the outside and install contact plate (17);

the contact plate (17) is close to and links arm (16) one side center department to install docking assembly (50), docking assembly (50) are including inserted block (51), the lateral surface center department that links arm (16) is provided with holding tank (161), install two compression springs (19) and one and holding tank (161) inner wall sliding connection's movable block (18) in holding tank (161), the lateral surface of movable block (18) is provided with docking groove (181) with inserted block (51) looks adaptation, inserted block (51) dock with movable block (18).

2. The portable three-jaw positioning mechanism according to claim 1, wherein an assembling plate (30) is further installed on one side of the bottom plate (20), and the assembling plate (30) is connected with the bottom plate (20) through a plurality of fixing bolts.

3. The portable three-jaw positioning mechanism according to claim 1, wherein a tool shell (40) is further installed at the top of the three-jaw tool (10), the inside of the tool shell (40) is fixedly connected with the side edge of the air cylinder (11) through a screw, and a hanging ring (41) is arranged at the top of the tool shell (40).

4. The three-jaw positioning mechanism according to claim 1, wherein the lifting cylinder (12) is mounted at the top of the air cylinder (11), the three-jaw tooling (10) further comprises three fixing seats (15), the three fixing seats (15) are fixedly mounted on the bottom plate (20) in a radioactive distribution mode by taking the air cylinder (11) as a center, the mechanical arm further comprises an H-shaped linkage block (13), one end of the top of the H-shaped linkage block (13) is rotationally connected with the side edge of the lifting cylinder (12), one end of the bottom of the H-shaped linkage block (13) is rotationally connected with one end of the top of the movable arm (14), and one end of the bottom of the movable arm (14) is rotationally connected with the fixing seats (15).

5. The portable three-jaw positioning mechanism according to claim 1, wherein a plurality of buffer rubber pads (60) are equidistantly arranged on one surface of the contact plate (17) close to the connecting arm (16).

6. The portable three-jaw positioning mechanism according to claim 1, wherein the docking assembly (50) further comprises two pressing blocks (52), the two pressing blocks (52) are respectively installed inside two sides of the contact plate (17) in a penetrating mode, cavity containing grooves (511) are formed in two sides of the inserting block (51), openings are formed in the cavity containing grooves (511) close to the pressing blocks (52), pressure springs (55) and buckling blocks (54) are installed in the cavity containing grooves (511), connecting blocks (53) are installed on one side of the inner portion of each buckling block (54), the connecting blocks (53) are connected with the corresponding pressing blocks (52), and grooves matched with the buckling blocks (54) are formed in two sides of the docking groove (181).

7. The portable three-jaw positioning mechanism of claim 6, wherein said snap-in block (54) is a wedge structure having an inclined surface on an outer side.