WO2019033743A1

WO2019033743A1 - Clamping fixture

Info

Publication number: WO2019033743A1
Application number: PCT/CN2018/077835
Authority: WO
Inventors: 徐金根; 向雪梅; 陶勋辉; 崔水利
Original assignee: 昆山科森科技股份有限公司
Priority date: 2017-08-14
Filing date: 2018-03-02
Publication date: 2019-02-21
Also published as: CN109382686A; JP3227715U

Abstract

A clamping fixture, comprising a left support (1), a right support (2), a fixing plate (3), a positioning plate (4), a plurality of collets (5) and a plurality of pressure mechanisms (6). Two ends of the fixing plate are fixedly connected to the left support and the right support respectively, and the positioning plate is connected to the fixing plate; the collets are located at one side away from the center; the inner side surfaces of the pressure mechanisms are uniformly provided with blind holes (22) corresponding to stepped holes (21), and hydraulic oil holes (26) penetrate the blind holes respectively; the hydraulic oil holes are connected to an oil pump by means of a hydraulic oil pipe (27), and the lower ends of the hydraulic oil holes are connected to a left substrate (102) of the left support and a right substrate (202) of the right support respectively. Four guide posts (33) on a same side are anti-slip guide posts, wherein the anti-slip guide posts are provided with a trapezoidal cut surface (361) on a side close to the outside; an included angle is present between the trapezoidal cut surface and a vertical plane, and an upper base of the trapezoidal cut surface is shorter than a lower base.

Description

Clamping fixture

Technical field

The present application relates to the field of high precision machining, for example to a gripping jig.

Background technique

As a wide-ranging entertainment and communication device, smartphones are faster to update and therefore require higher demands on smartphone manufacturers. Smartphone parts are inseparable from machine tools. Machine tool fixtures are one of the important process equipments to ensure the quality of machine tools, improve production efficiency, and reduce labor intensity. However, there are many problems in how to position the workpiece stably and effectively in the process of machining.

The computer numerical control (CNC) jig in the related art uses a simple jig and a positioning pin for positioning operation, and the worker is loaded and unloaded, which causes the workpiece to be unstable, the press is too tight or too loose. It has the problems of high labor intensity and inconvenient operation.

Summary of the invention

The embodiment of the present application provides a clamping fixture, which can effectively prevent the movable panel from sliding down, thereby ensuring the stability of the material to be processed during the processing and ensuring the processing precision.

The embodiment of the present application provides a clamping fixture, including: a left support, a right support, a fixed plate, a positioning plate, a plurality of chucks, and a plurality of pressure mechanisms, wherein the two ends of the fixed plate are respectively opposite to the left The support and the right support are fixedly connected, the positioning plate is fixedly connected to the fixed plate, and the plurality of pressure mechanisms are respectively symmetrically mounted on both sides of the fixed plate, and the clamps are respectively mounted on the a first end of the piston rod of the pressure mechanism;

a plurality of uniformly arranged through-holes are symmetrically disposed on the two sides of the surface of the fixing plate, and the positioning protrusions of the positioning plate and the chuck are located in the yielding through holes, wherein the positioning protrusions Located on a side of the center of the fixing plate, the chuck is located away from the central side, and both sides of the fixing plate are provided with a stepped hole penetrating through the through hole, and the pressure mechanism is close to the One side surface of the fixing plate is evenly disposed with a blind hole corresponding to the stepped hole, and the first end of the piston rod passes through the stepped hole and is fixedly connected with the collet in the retaining through hole. a second end of the piston rod is embedded in the blind hole, the piston rod includes a flange portion, and an elastic member is disposed on the piston rod and located at a stepped surface of the flange portion and the stepped hole An oil seal is disposed on the piston rod between the flange portion and the transfer surface of the blind hole, and a hydraulic oil hole is disposed on a surface of the pressure mechanism, the hydraulic oil hole and the hydraulic oil hole The blind hole is penetrated, and the hydraulic oil hole is arranged to pass through a hydraulic oil pipe and an oil pump connection;

A movable plate is disposed under the fixing plate, and the movable plate is provided with four mounting through holes, and the four guiding columns respectively pass through the mounting through holes of the movable plate and the first ends of the four guiding columns are a fixing plate is connected, and the second ends of the four guiding columns are respectively connected to the left substrate of the left support and the right substrate of the right support;

The two guide columns on the same side of the four guide columns are non-slip guide posts and one side of the anti-slip guide post is provided with a trapezoidal cut surface, the trapezoidal cut surface and the vertical surface have an angle and the The upper base of the trapezoidal cut surface is longer than the lower base.

In an embodiment, wherein: a power cylinder is disposed below the movable plate.

In an embodiment, the four mounting through holes are respectively located at four corners of the movable panel.

In an embodiment, the collet is arranged to be fixedly connected to the piston rod by screws.

In an embodiment, the blind hole is a T-shaped blind hole.

In an embodiment, the elastic element is a spring.

1. The clamping fixture provided by the embodiment of the present application, the first end of the piston rod passes through the stepped hole on the surface of one side of the fixing plate and is fixedly connected with the collet located in the reaming through hole, and the second end of the piston rod is embedded In the blind hole of the pressure mechanism, the piston rod has a flange portion, a spring is set on the piston rod and is located between the flange portion and the stepped surface of the stepped hole, and an oil seal is set on the piston rod and located on the flange Between the portion and the transfer surface of the blind hole, a hydraulic oil hole is disposed on one surface of the pressure mechanism, and the hydraulic oil hole is respectively penetrated with the blind hole, and the hydraulic oil hole is disposed to be connected to the oil pump through a hydraulic oil pipe, and passes through The hydraulic method acts on the piston rod, and the clamping and fixing of the material to be processed is realized by the collet and the positioning protrusion at the first end of the piston rod, and the hydraulic pressure can provide greater pressure than the pneumatic and electric, and the pressure is stable and uniform. The spring is arranged on the piston rod, so that the pressure of the chuck at the first end position of the piston rod has a certain toughness, the elastic pressing of the material to be processed is realized, the material to be processed is prevented from being crushed, the quality of the product is ensured, and the oil seal is ensured. The setting ensures the tightness of the pressure mechanism, so that the hydraulic oil is completely sealed between the hydraulic oil hole and the oil seal, thereby ensuring the pressure and stability of the hydraulic oil to the piston rod; the collet is arranged to be fixedly connected with the piston rod through a screw The chuck has interchangeability, and different chucks are replaced with different materials to be processed, so that the fixture has versatility.

2. The clamping fixture provided in the present application has a movable plate disposed below the fixing plate, and four movable through holes are formed in the movable plate, and four guiding columns respectively pass through the mounting through holes of the movable plate and the upper end of the guiding column and The fixing plate is connected, and the lower end of the guiding column is respectively connected with the right substrate of the left substrate and the right support of the left support, and the movable plate is arranged such that the upper end of the material to be processed is clamped by the clamping head and the positioning convex piece, and the material to be processed is to be processed. The lower end is in contact with the movable plate, and can be moved up under the driving of the movable plate to realize the automatic feeding of the material to be processed, reducing the manual use and improving the production efficiency; the two of the four guiding columns located on the same side are non-slip guides. The column and the non-slip guide post are disposed on a side of the outer side with a trapezoidal cut surface. The trapezoidal cut surface has an angle with the vertical surface, and the upper base length of the trapezoidal cut surface is smaller than the length of the lower bottom. The arrangement of the anti-slip guide post can effectively prevent the movable plate. The drop and the trapezoidal cut surface are arranged so that the lower part of the non-slip guide post is thicker than the upper part, and the movable plate can be caught to prevent the movable plate from sliding down, and then the knurling setting is adopted to increase the frictional force of the anti-skid guide post, thereby effectively preventing the movable plate from sliding down, thereby effectively preventing the movable plate from sliding down. It ensures the stability of the material to be processed during the processing and ensures the processing accuracy.

DRAWINGS

1 is a schematic structural view of a hydraulic clamping fixture for processing a smart display accessory according to an embodiment.

2 is a partially exploded perspective view of a hydraulic clamping fixture for processing a smart display accessory in an embodiment.

FIG. 3 is an exploded perspective view of a hydraulic clamping fixture for processing a smart display accessory according to an embodiment.

4 is a schematic view showing a partial structure of a hydraulic clamping fixture for processing a smart display accessory in an embodiment.

Figure 5 is a schematic view showing the structure of a blind hole in an embodiment.

In the above drawings: 1, left support; 102, left substrate; 2, right support; 202, right substrate; 3, fixed plate; 4, positioning plate; 5, collet; 6, pressure mechanism; Rod; 701, flange portion; 16, letment through hole; 18, positioning bump; 21, stepped hole; 211, stepped surface; 22, blind hole; 221, adapter surface; 23, mounting hole; Components; 25, oil seal; 26, hydraulic oil hole; 27, hydraulic oil pipe; 31, movable plate; 32, installation through hole; 33, guide column; 36, anti-skid guide column; 361, trapezoidal cut surface.

Detailed ways

The embodiments of the present application are described below with reference to the accompanying drawings and embodiments:

Embodiment 1: A clamping jig (which can be used for processing of a smart display accessory), including a left support 1, a right support 2, a fixing plate 3, a positioning plate 4, a plurality of collets 5, and a plurality of pressure mechanisms 6. The two ends of the fixing plate 3 are fixedly connected to the left support 1 and the right support 2 respectively. The positioning plate 4 is fixedly connected to the fixed plate 3, and the plurality of pressure mechanisms 6 are symmetrically mounted on the fixed plate 3 respectively. a plurality of chucks 5 are respectively mounted on the first surfaces of the piston rods 7 of the plurality of pressure mechanisms 6;

A plurality of uniformly arranged through-holes 16 are symmetrically formed on both sides of the upper surface of the fixing plate 3, and the positioning protrusions 18 and the clamping heads 5 of the positioning plate 4 are located in the receiving through-holes 16, wherein the positioning protrusions 18 are located. Located on the side of the center of the fixed plate 3, the collet 5 is located away from the central side, and the surface of both sides of the fixing plate 3 is provided with a stepped hole 21 penetrating through the through hole 16 , and the pressure mechanism 6 is adjacent to the The surface of the fixing plate (3) is uniformly provided with a blind hole 22 (for example, a T-shaped blind hole) corresponding to the stepped hole 21, and the first end of the piston rod 7 passes through the stepped hole 21 and is located in the retaining through hole 16 The clamping head 5 is fixedly connected, and the second end of the piston rod 7 is embedded in the blind hole 22 of the pressure mechanism 6. The piston rod 7 includes a flange portion 701, and an elastic member 24 (for example, a spring) is fitted to the piston rod 7. Between the flange portion 701 and the stepped surface 211 of the stepped hole 21, an oil seal 25 is fitted on the piston rod 7 and located between the flange portion 701 and the transition surface 221 of the blind hole 22, the pressure mechanism 6 A hydraulic oil hole 26 is disposed on one side surface, and the hydraulic oil hole 26 is respectively penetrated through the blind hole 22, and the hydraulic oil hole 26 is disposed through a hydraulic pressure. Tube 27 is connected to an oil pump;

A movable plate 31 is disposed under the fixing plate 3, and four movable through holes 32 are opened in the movable plate 31, and the four guiding columns 33 respectively pass through the mounting through holes 32 of the movable plate 31 and the first of the guiding columns 33 The end is connected to the fixed plate 3, and the second ends of the four guide posts 33 are respectively connected to the left substrate 102 of the left support 1 and the right substrate 202 of the right support 2;

Two of the four guide posts 33 on the same side are non-slip guide posts 36 and a non-slip guide post 36 is disposed on a side of the outer side of the anti-slip guide post 36 with a trapezoidal cut surface 361 having an angle between the trapezoidal cut surface 361 and the vertical surface. The upper base of the cut surface 361 is longer than the lower base.

In an embodiment, a power cylinder is disposed below the movable panel 31.

In an embodiment, the four mounting through holes 32 are respectively located at four corners of the movable panel 31.

Embodiment 2: A clamping jig (which can be used for processing of a smart display accessory), including a left support 1, a right support 2, a fixing plate 3, a positioning plate 4, a plurality of collets 5, and a plurality of pressure mechanisms 6. The two ends of the fixing plate 3 are fixedly connected to the left support 1 and the right support 2 respectively. The positioning plate 4 is fixedly connected to the fixed plate 3, and the plurality of pressure mechanisms 6 are symmetrically mounted on the fixed plate 3 respectively. a plurality of chucks 5 are respectively mounted on the first surfaces of the piston rods 7 of the plurality of pressure mechanisms 6;

In an embodiment, the collet 5 is arranged to be fixedly connected to the piston rod 7 by screws.

When the clamping fixture in the embodiment of the present application is used, the piston rod 7 is hydraulically applied, and the clamping head 5 and the positioning protrusion 18 of the first end of the piston rod 7 are used to clamp and fix the material to be processed. Compared with pneumatic and electric, the hydraulic pressure can provide more pressure and the pressure is stable and uniform. By providing the elastic member on the piston rod 7, the pressure of the first end clamp 5 of the piston rod 7 has a certain toughness, and the elastic pressing of the material to be processed is realized, thereby avoiding crushing of the material to be processed and ensuring the quality of the product. The arrangement of the oil seal 25 ensures the tightness of the pressure mechanism 6, so that the hydraulic oil is completely sealed between the hydraulic oil hole 26 and the oil seal 25, thereby ensuring the magnitude and stability of the pressure of the hydraulic oil to the piston rod 7. The collet 5 is arranged to be fixedly connected with the piston rod 7 by screws, and has interchangeability. The different collets are replaced with different materials to be processed, so that the clamping jig in the embodiment of the present application has versatility. In addition, by setting the movable plate 31, the upper end of the material to be processed is clamped by the clamping head and the positioning protrusion, and the lower end of the material to be processed is in contact with the movable plate, and can be moved up by the movable plate to realize the material to be processed. Automatic feeding, reducing manual use and improving production efficiency. By the arrangement of the anti-slip guide post 36, it is possible to effectively prevent the movable panel from falling. Through the arrangement of the trapezoidal cutting surface 361, the lower portion of the anti-slip guide post 36 is thicker than the upper portion, and the movable plate 31 can be caught to prevent the movable plate 31 from sliding down. The knurling can also be provided on the anti-slip guide post 36 to increase the friction of the anti-slip guide post 36. The force effectively prevents the movable plate 31 from sliding down, thereby ensuring the stability of the material to be processed during the processing and ensuring the processing accuracy.

Industrial applicability

The clamping fixture provided by the disclosure can realize the elastic pressing of the material to be processed, avoid crushing the material to be processed, the chuck has the replaceability, the versatility is strong, the automatic feeding of the material to be processed can be realized, and the labor cost is low. , high production efficiency, good processing stability and high precision.

Claims

A clamping fixture comprising: a left support (1), a right support (2), a fixed plate (3), a positioning plate (4), a plurality of collets (5) and a plurality of pressure mechanisms (6) The two ends of the fixing plate (3) are fixedly connected to the left support (1) and the right support (2), respectively, and the positioning plate (4) is fixedly connected with the fixed plate (3) The plurality of pressure mechanisms (6) are respectively symmetrically mounted on both side surfaces of the fixing plate (3), and the chucks (5) are respectively mounted on the piston rods (7) of the pressure mechanism (6) One end

a plurality of evenly arranged retaining through holes (16) are symmetrically opened on both sides of the upper surface of the fixing plate (3), and the positioning protrusions (18) of the positioning plate (4) and the chuck (5) are both Located in the yielding through hole (16), wherein the positioning protrusion (18) is located near a central side of the fixing plate (3), and the chuck (5) is located away from the central side, Both sides of the fixing plate (3) are provided with stepped holes (21) penetrating the letting through holes (16), and the pressure mechanism (6) is evenly arranged on one side of the fixing plate (3) Provided with a blind hole (22) corresponding to the stepped hole (21), the first end of the piston rod (7) passes through the stepped hole (21) and is inside the let-through through hole (16) The clamping head (5) is fixedly connected, the second end of the piston rod (7) is embedded in the blind hole (22), and the piston rod (7) comprises a flange portion (701), an elastic element ( 24) is set on the piston rod (7) between the flange portion (701) and the stepped surface (211) of the stepped hole (21), and an oil seal (25) is set on the piston rod (7) is located between the flange portion (701) and the transition surface (221) of the blind hole (22), and the pressure mechanism (6) side table The surface is provided with a hydraulic oil hole (26) penetrating the blind hole (22), and the hydraulic oil hole (26) is arranged to be connected to the oil pump through a hydraulic oil pipe (27);

A movable plate (31) is disposed under the fixing plate (3), and four movable through holes (32) are defined in the movable plate (31), and four guiding columns (33) respectively pass through the movable plate (31). a through hole (32), and the first ends of the four guiding columns (33) are connected to the fixing plate (3), and the second ends of the four guiding columns (33) are respectively connected to the left branch The left substrate of the seat (1) is connected to the right substrate of the right support (2);

The two guide posts (33) on the same side of the four guide posts (33) are non-slip guide posts and one side of the anti-slip guide post is provided with a trapezoidal cut surface, and the trapezoidal cut surface and the vertical face have An angle is formed and the upper base length of the trapezoidal cut surface is smaller than the lower base length.
The clamping jig according to claim 1, wherein a power cylinder is disposed below the movable plate (31).
The clamping jig according to claim 1, wherein said four mounting through holes (32) are respectively located at four corners of said movable panel (31).
A clamping jig according to claim 1, wherein said collet (5) is arranged to be fixedly connected to the piston rod (7) by screws.
The clamping jig according to claim 1, wherein said blind hole (22) is a T-shaped blind hole.
A clamping jig according to claim 1, wherein said elastic member (24) is a spring.