CN216228577U

CN216228577U - Clamp and grinding device

Info

Publication number: CN216228577U
Application number: CN202122983514.1U
Authority: CN
Inventors: 李浩明; 李谢峰; 朱春伟; 付仕; 潘凌菲; 欧玉俊; 梁国伟; 沈峥嵘; 袁野
Original assignee: Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-08
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to the technical field of machining, in particular to a clamp and a grinding device. The clamp provided by the utility model comprises a plurality of clamping assemblies, wherein each clamping assembly comprises two external magnetic conduction parts and a non-magnetic conduction part, the non-magnetic conduction parts are arranged and connected between the two external magnetic conduction parts, the external magnetic conduction parts have magnetic conduction capability, and the non-magnetic conduction parts can cut magnetic induction lines to ensure that the magnetic lines of the external magnetic conduction parts are aligned with the magnetic lines of force of the electromagnetic platform. The grinding platform comprises an electromagnetic platform and a grinding tool, and a closed magnetic loop is formed between the electromagnetic platform and the external magnetic conduction piece after the electromagnetic platform is electrified. The clamping assemblies are oppositely arranged with different magnetic poles, and are mutually attracted due to the heteropolar attraction effect of the magnetic field, so that the clamping assemblies are tightly attached to the surface of a workpiece, the clamping assemblies can rapidly clamp workpieces with different shapes, the auxiliary clamping time is saved, and the grinding quality can be ensured.

Description

Clamp and grinding device

Technical Field

The utility model relates to the technical field of machining, in particular to a clamp and a grinding device.

Background

Grinding of parts is one of the common methods used in the manufacture of aircraft parts. For example, in aircraft manufacturing assemblies, it is necessary to machine and use chromium-plated bushings of different specifications. In order to meet the use requirement of a working environment, parameters such as thickness uniformity, parallelism, verticality and the like of the chromium coating are strictly controlled according to the process requirement, so that the use reliability, safety and service life of the bushing are ensured. In the prior art, a bush is clamped by adopting a separated semicircular magnetic conduction piece in a grinding process, and two semicircular magnetic conduction pieces which are customized according to the appearance of a processed workpiece are used for clamping the workpiece.

Therefore, a fixture and a grinding apparatus are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamp which can clamp workpieces with different appearance specifications conveniently and efficiently, save auxiliary clamping time and ensure the quality of a workpiece machining process.

To achieve the purpose, the utility model adopts the following scheme:

a clamp comprises a plurality of clamping assemblies, wherein the clamping assemblies are configured to enclose a workpiece clamping space, each clamping assembly comprises two external magnetic conduction pieces and a non-magnetic conduction piece, and the non-magnetic conduction piece is arranged and connected between the two external magnetic conduction pieces.

Optionally, the clamping assembly further comprises a plurality of intermediate magnetic conductive members and a plurality of non-magnetic conductive members, and the plurality of non-magnetic conductive members and the plurality of intermediate magnetic conductive members are alternately connected and disposed between the two outer magnetic conductive members.

Alternatively, the bottom surface of the clamping assembly is flush.

Alternatively, the clamping assembly is generally cylindrical.

Alternatively, the axial cross-section of the clamping assembly is circular.

Alternatively, the outer magnetically permeable member and the intermediate magnetically permeable member are made of a Fe-Co-V soft magnetic alloy material.

Alternatively, the non-magnetic conductive member is made of a metallic copper alloy material.

As an alternative, the external magnetic conduction member, the non-magnetic conduction member and the intermediate magnetic conduction member are provided with through holes facing and communicating with each other, and the clamp further comprises a fastening member configured to penetrate through the through holes and to be connected and fixed with the external magnetic conduction member, the non-magnetic conduction member and the intermediate magnetic conduction member.

The utility model provides a grinding device which can clamp workpieces with different appearance specifications conveniently and efficiently, save auxiliary clamping time and ensure the quality of a workpiece machining process.

To achieve the purpose, the utility model adopts the following scheme:

a grinding apparatus comprising any one of the above-described clamps, the grinding apparatus further comprising an electromagnetic platform against which a bottom surface of the clamp abuts, the electromagnetic platform being configured to form a closed magnetic circuit with the clamp upon energization, and a grinding tool configured to grind the workpiece.

As an alternative, the grinding device further comprises a coupling ring, the transverse cross-section of which is S-shaped, the coupling ring forming two open receiving spaces configured to receive the clamping assembly.

The utility model has the beneficial effects that:

in the clamp and the grinding device provided by the utility model, the non-magnetic conduction piece is arranged and connected between the two external magnetic conduction pieces, the external magnetic conduction pieces have magnetic conduction capability, and the non-magnetic conduction pieces can cut magnetic induction lines to ensure that the magnetic lines of force of the external magnetic conduction pieces are aligned with the magnetic lines of force of the electromagnetic platform. After the electromagnetic platform is electrified, a closed magnetic loop is formed between the electromagnetic platform and the external magnetic conduction piece. The clamping assemblies are arranged oppositely with different magnetic poles, and are mutually attracted due to the heteropolar attraction effect of the magnetic field, so that the surfaces of workpieces are tightly attached, the clamping assemblies provide clamping and supporting effects from different directions of the workpieces, the clamping assemblies can rapidly clamp the workpieces with different appearances, the auxiliary clamping time is saved, the workpieces can be guaranteed to be uniformly clamped and supported in different directions, and the grinding quality can be guaranteed.

Drawings

Fig. 1 is a schematic structural view of a grinding apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a clamp assembly provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of a clamping assembly provided in accordance with another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a coupling ring provided by an embodiment of the utility model.

In the figure:

100. a clamp; 110. a clamping assembly; 111. an external magnetically permeable member; 112. a non-magnetic conductive member; 113. an intermediate magnetically conductive member; 114. a through hole; 200. an electromagnetic platform; 300. grinding the cutter; 400. a coupling ring; 410. an accommodating space; 500. and (5) a workpiece.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, the terms of orientation such as "upper", "lower", "left", "right", "inner" and "outer" are used in the case where no description is made on the contrary, and these terms of orientation are used for easy understanding, and thus do not limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the grinding apparatus provided in the present embodiment includes a jig 100, an electromagnetic table 200, and a grinding tool 300. The bottom surface of the jig 100 abuts against the electromagnetic stage 200, and the electromagnetic stage 200 can form a closed magnetic circuit with the jig 100 after being energized. The fixture 100 comprises a plurality of clamping assemblies 110, and the plurality of clamping assemblies 110 can enclose a workpiece 500 clamping space for clamping and fixing the workpiece 500 so as to ensure that the grinding tool 300 can grind and machine the workpiece 500. Specifically, the clamping assembly 110 of the present embodiment includes two outer magnetically permeable members 111 and a non-magnetic member 112, and the non-magnetic member 112 is disposed and connected between the two outer magnetically permeable members 111. The external magnetic conduction member 111 has magnetic conduction capability, the non-magnetic conduction member 112 does not have magnetic conduction capability, and the non-magnetic conduction member 112 can cut magnetic induction lines to ensure that the magnetic lines of force of the external magnetic conduction member 111 are aligned with the magnetic lines of force of the electromagnetic platform 200. After the electromagnetic platform 200 is powered on, a closed magnetic loop is formed between the electromagnetic platform 200 and the external magnetic conductive member 111. The clamping members 110 are arranged in a manner that different magnetic poles are opposite to each other, and the clamping members 110 are mutually attracted due to the opposite pole attraction of the magnetic field, so that the clamping members are tightly attached to the surface of the workpiece 500, and the clamping support effect is provided for the workpiece 500. In the embodiment, a plurality of clamping assemblies 110 with magnetic conductivity are used for enclosing a clamping space, the electromagnetic platform 200 is electrified to enable the clamping assemblies 110 to generate attraction interaction force, so that the clamping assemblies 110 provide clamping and supporting effects from different directions of the workpiece 500, the clamping assemblies 110 can be ensured to rapidly clamp the workpieces 500 with different shapes, the auxiliary clamping time is saved, the workpieces 500 can be ensured to receive consistent clamping and supporting effects in different directions, and the quality of processing technologies such as grinding uniformity, parallelism and verticality can be ensured.

As shown in fig. 3, the clamping assembly 110 further preferably includes a plurality of intermediate magnetic conductive members 113 and a plurality of non-magnetic conductive members 112, wherein the plurality of non-magnetic conductive members 112 and the plurality of intermediate magnetic conductive members 113 are alternately arranged and connected and are disposed between the two outer magnetic conductive members 111. A plurality of non-magnetic-conductive parts 112 and middle magnetic-conductive parts 113 are arranged between the two external magnetic-conductive parts 111, the non-magnetic-conductive parts 112 can cut magnetic induction lines formed by the external magnetic-conductive parts 111 and the middle magnetic-conductive parts 113 and the electromagnetic platform 200 to be thinner, so that the magnetic induction lines are distributed more densely, the mutual attraction force of the clamping assembly 110 during use can be improved, and the clamping fixing capacity of the clamp 100 can be improved. In some embodiments, the number of the middle magnetic conductive members 113 of the clamping assembly 110 may be one, the number of the non-magnetic conductive members 112 may be two, two sides of the middle magnetic conductive member 113 are respectively connected to the two non-magnetic conductive members 112, and two sides of the two non-magnetic conductive members 112 are respectively connected to the outer magnetic conductive members 111, so that the non-magnetic conductive members 112 can cut the magnetic induction lines of the outer magnetic conductive members 111 and the middle magnetic conductive members 113, and the magnetic attraction force between the clamping assemblies 110 is improved. In other embodiments, the number of the middle magnetic conductive members 113 of the clamping assembly 110 may be three, the number of the non-magnetic conductive members 112 may be four, the four non-magnetic conductive members 112 and the three middle magnetic conductive members 113 are alternately arranged and connected, and are disposed and connected between the two outer magnetic conductive members 111, so that the four non-magnetic conductive members 112 can cut the magnetic induction lines of the outer magnetic conductive members 111 and the middle magnetic conductive members 113 more finely, and further the magnetic induction lines formed between the outer magnetic conductive members 111 and the middle magnetic conductive members 113 and the electromagnetic platform 200 are dense, so that the magnetic attraction force between the clamping assemblies 110 is further increased, and the purpose of clamping the workpiece 500 more stably is achieved.

In order to make the clamp 100 firmly abut against the electromagnetic platform 200, the bottom surface of the clamping assembly 110 in this embodiment is flush. When the parallel and level bottom surface and electromagnetism platform 200 butt, can guarantee that each centre gripping subassembly 110 is arranged on electromagnetism platform 200 firmly, conveniently place the centre gripping space of a plurality of centre gripping subassemblies 110 in order to form different shapes to satisfy the demand of the different appearance work pieces 500 of centre gripping.

Preferably, the clamping assembly 110 of the present embodiment has a cylindrical shape, and the clamping space formed by the clamping assembly 110 has a longitudinal extension, and since the workpiece 500 is required to be machined face up in the grinding process and the grinding tool 300 grinds the workpiece 500 from top to bottom, the clamping assembly 110 has a cylindrical shape, and can stably bear the force from the grinding tool 300, and the stability of the clamping support effect is ensured.

Further preferably, in order to further enhance the clamping and supporting effect on the workpiece 500, the axial cross section of the clamping assembly 110 of the present embodiment is circular, and the clamping assembly 110 is cylindrical as a whole. The clamping space that a plurality of columniform centre gripping subassemblies 110 formed is fit for placing the work piece 500 of different appearances, because its whole is cylindricly, centre gripping subassembly 110 is difficult for producing relative rotation when the outer wall butt work piece 500 of centre gripping subassembly 110, can guarantee the centre gripping support effect effectively.

In order to ensure that the plurality of clamping assemblies 110 generate a stable magnetic attraction force, the outer magnetic conductive member 111 and the middle magnetic conductive member 113 in this embodiment are made of an iron-cobalt-vanadium soft magnetic alloy material. The iron-cobalt-vanadium soft magnetic alloy material has good magnetic permeability, and can generate a stable magnetic field with the electromagnetic platform 200, and the external magnetic conduction piece 111 and the middle magnetic conduction piece 113 made of the iron-cobalt-vanadium soft magnetic alloy material can form a stable magnetic field with the electromagnetic platform 200 in the using process, so that stable magnetic attraction force generated between the clamping components 110 can be ensured, and the purpose of clamping the workpiece 500 is achieved.

To enhance the magnetic force of the clamping assembly 110, the non-magnetic conductive member 112 in this embodiment is made of a metallic copper alloy material. The metal copper alloy material has non-magnetic conductivity, and when the metal copper alloy material is placed between the external magnetic conductive part 111 and the intermediate magnetic conductive part 113, magnetic induction lines can be effectively cut, so that magnetic induction line loops formed between the clamping assembly 110 and the electromagnetic platform 200 are distributed more tightly, the magnetic field of the clamping assembly 110 can be enhanced, and the magnetic attraction among the clamping assemblies 110 is ensured to be large enough.

In this embodiment, the external magnetic conductive member 111, the non-magnetic conductive member 112, and the intermediate magnetic conductive member 113 are respectively provided with a through hole 114 facing and communicating with each other, and the fixture 100 further includes a fastening member, which is inserted through the through hole 114 and is connected and fixed to the external magnetic conductive member 111, the non-magnetic conductive member 112, and the intermediate magnetic conductive member 113. Specifically, the fastener may be a threaded fastener, by which the outer magnetic conductive member 111, the non-magnetic conductive member 112, and the intermediate magnetic conductive member 113 can be tightly coupled, ensuring stability of the clamping assembly 110 during use. In other embodiments, the outer magnetic conductive member 111, the non-magnetic conductive member 112 and the intermediate magnetic conductive member 113 may be bonded, as long as the tight connection between the components is ensured.

As shown in fig. 4, the grinding apparatus in this embodiment further includes a coupling ring 400, the transverse cross section of the coupling ring 400 is S-shaped, the coupling ring 400 forms two open receiving spaces 410, and the two clamping assemblies 110 are respectively disposed in the two open receiving spaces 410, so that the two clamping assemblies 110 can be connected in series to form a whole, thereby improving the flexibility of setting the clamping spaces to adapt to more workpieces 500 with different specifications. In other embodiments, the number of open receiving spaces 410 formed by the coupling ring 400 may be greater to facilitate the serial connection of more clamping assemblies 110 to meet the requirements of different shapes of workpieces 500 and different clamping forces.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments thereof. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A clamp comprising a plurality of clamping assemblies (110), a plurality of said clamping assemblies (110) being configured to enclose a workpiece (500) clamping space, said clamping assemblies (110) comprising two outer magnetically permeable members (111) and a non-magnetically permeable member (112), said non-magnetically permeable member (112) being disposed and connected between said two outer magnetically permeable members (111).

2. The clamp of claim 1, wherein said clamping assembly (110) further comprises a plurality of intermediate magnetically permeable members (113) and a plurality of non-magnetically permeable members (112), said plurality of non-magnetically permeable members (112) and said plurality of intermediate magnetically permeable members (113) being alternately connected and disposed between two of said outer magnetically permeable members (111).

3. The clamp of claim 2, wherein a plurality of said clamping assemblies (110) are flush on a bottom surface.

4. A clamp as claimed in claim 3, characterized in that said clamping assembly (110) is entirely cylindrical.

5. The clamp according to claim 4, characterized in that the axial cross section of the clamping assembly (110) is circular.

6. The clamp according to claim 2, characterized in that said outer magnetically permeable member (111) and said intermediate magnetically permeable member (113) are made of a Fe-Co-V soft magnetic alloy material.

7. The clamp according to claim 2, characterized in that the non-magnetic conductive piece (112) is made of a metallic copper alloy material.

8. The clamp according to claim 2, wherein the outer magnetic conductive member (111), the non-magnetic conductive member (112) and the middle magnetic conductive member (113) are respectively provided with a through hole (114) facing and communicating with each other, and the clamp (100) further comprises a fastener configured to penetrate through the through hole (114) and connect and fix the outer magnetic conductive member (111), the non-magnetic conductive member (112) and the middle magnetic conductive member (113).

9. A grinding apparatus, comprising the clamp (100) according to any one of claims 1 to 8, further comprising an electromagnetic platform (200) and a grinding tool (300), wherein the bottom surface of the clamp (100) abuts against the electromagnetic platform (200), the electromagnetic platform (200) is configured to form a closed magnetic circuit with the clamp (100) after being electrified, and the grinding tool (300) is configured to grind the workpiece (500).

10. The grinding device according to claim 9, further comprising a coupling ring (400), the transverse cross-section of the coupling ring (400) being S-shaped, the coupling ring (400) forming two open receiving spaces (410), the receiving spaces (410) being configured to receive the clamping assembly (110).