Clamping device for polishing

Abstract

The utility model provides a clamping device for polishing, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The clamping device for polishing comprises a support and further comprises a positioning plate, a connecting base, a driving piece and a sheath assembly, the upper portion of the support is provided with a positioning part used for containing a workpiece to be polished, the connecting base is fixedly connected to the support, the lower end of the positioning plate is hinged to the connecting base, the driving piece is fixedly connected to the side of the support and hinged to the positioning plate, and the sheath assembly is fixedly connected to the support. The sheath assembly is connected between the driving piece and the positioning plate, in the initial state, the upper end of the positioning plate is far away from the positioning part, and after the driving piece drives the positioning plate to swing around the hinged position of the positioning plate, a workpiece to be polished can be positioned between the positioning part and the upper end of the positioning plate. The clamping device for polishing is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a clamping device for polishing. Background Art

[0002] During the workpiece polishing operation, the workpiece needs to be adsorbed on the corresponding positioning part. At the same time, a gap needs to be reserved at the workpiece to facilitate the placement of the workpiece at the positioning part.

[0003] During the polishing operation, the product at the positioning part is polished by a five-axis electromechanical grinder. Due to the limited adsorption force between the workpiece and the positioning part and the existence of the above-mentioned reserved gap, the workpiece shakes during the polishing operation, the product yield is low and the rework rate is high, wasting consumables and labor costs.

[0004] Chinese patent publication number CN108436763B provides a clamping device for clamping a sample during polishing by a polishing machine, comprising an upper base, a lower base, a reciprocating frame, a compression spring support seat, a compression spring support rod, a compression spring, a compression spring clamping rod, a sleeve, a material storage box, a clamping cover, a clamping cover guide rod, a driving hook and a clamping assembly;

[0005] The extrusion of the grinding paste is controlled by utilizing the balance principle between the friction force exerted on the specimen and the spring force of the compression spring. When the friction force is greater than the spring force of the compression spring after decomposition, the lower base slides and eventually drives the clamping cover to slide downward, thereby squeezing out the grinding paste. When the friction force is less than the spring force after decomposition, the compression spring pushes the compression spring clamping rod to return and eventually drives the clamping cover to slide upward, thereby stopping the extrusion of the grinding paste. This cycle is repeated so that an appropriate amount of grinding paste is always present on the friction surface between the polishing disc and the specimen, thereby achieving effective, stable and firm clamping of the specimen during polishing, thereby improving the polishing accuracy and polishing quality.

[0006] It can be seen that the polishing clamping device of the above patent has an overly complicated structure, and it is inconvenient to load and unload the workpiece in the above device, which ultimately affects its operating efficiency. Summary of the invention

[0007] The purpose of the utility model is to provide a clamping device for polishing with high stability and compact structure in view of the above problems existing in the prior art.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A clamping device for polishing comprises a bracket, characterized in that it also comprises a positioning plate, a connecting seat, a driving member and a sleeve assembly, the upper part of the bracket has a positioning portion for placing a workpiece to be polished, the connecting seat is fixedly connected to the bracket, the lower end of the positioning plate is hinged at the connecting seat, the driving member is fixedly connected to the side of the bracket and the driving member is hinged to the positioning plate, the sleeve assembly is connected between the driving member and the positioning plate, and in the initial state, the upper end of the positioning plate is away from the positioning portion, and when the driving member drives the positioning plate to swing around its hinge, the workpiece to be polished can be positioned between the positioning portion and the upper end of the positioning plate.

[0010] The clamping device for polishing stably connects the positioning plate to the end of the bracket through the connecting seat. Since the driving member fixed to the bracket is hinged with the positioning plate, the driving member can drive the positioning plate to swing around it.

[0011] In the initial state, the positioning plate is away, and the workpiece can be smoothly and stably placed in the positioning part. After the driving member drives the positioning plate to swing around its hinge, the positioning plate is buckled at the edge of the workpiece. At this time, the workpiece is tightly pressed between the positioning plate and the positioning part, ensuring that the workpiece is stably positioned at the clamping device.

[0012] On the contrary, after the driving member drives the positioning plate to swing in the opposite direction around its hinge, the workpiece after the polishing operation is completed can be stably taken out from the positioning portion.

[0013] Since the driving member will be displaced during its operation, the connection between the driving member and the positioning plate is covered by the sheath assembly, which can effectively prevent impurities from entering the displacement structure of the driving member and appropriately improve the overall stability.

[0014] In the above-mentioned clamping device for polishing, the above-mentioned positioning plate, connecting seat, driving member and sleeve assembly form a clamping unit, the number of the clamping units is two, and the two groups of clamping units are symmetrically located at both ends of the positioning part.

[0015] The two groups of clamping units are respectively snap-fitted and connected at both ends of the workpiece. Such a structure can ensure that the workpiece can be stably positioned and clamped at the clamping device.

[0016] In the above-mentioned clamping device for polishing, the connecting seat includes rod-shaped positioning rod 1 and positioning rod 2, the inner ends of the above-mentioned positioning rod 1 and positioning rod 2 are respectively fixedly connected to the two sides of the bracket, and the two ends of the above-mentioned positioning plate are respectively hinged to the outer ends of positioning rod 1 and positioning rod 2.

[0017] The positioning rod 1 and the positioning rod 2 can make the positioning plate connected thereto as far away from the bracket as possible, thereby ensuring that the positioning plate can swing stably under the action of the driving member.

[0018] In the above-mentioned clamping device for polishing, the driving member is a cylinder, the cylinder body of the cylinder is fixedly connected to the bracket, and the piston rod of the cylinder is movably connected to the positioning plate.

[0019] During the extension and retraction process of the piston rod of the cylinder, the positioning plate can be driven to swing stably around its hinge.

[0020] In the above-mentioned clamping device for polishing, the outer side of the positioning plate has a protruding hinge portion, and the piston rod is hinged at the hinge portion through a pin shaft.

[0021] The hinged portion on the positioning plate provides sufficient positions for the positioning plate to be hingedly connected.

[0022] In the above-mentioned clamping device for polishing, the hinged portion has a strip-shaped and vertically arranged connecting hole, the above-mentioned pin shaft is penetrated through the connecting hole, and the length dimension of the above-mentioned connecting hole is greater than the outer diameter dimension of the pin shaft.

[0023] Such a structure can make the positioning plate swing stably and avoid getting stuck.

[0024] In the above-mentioned clamping device for polishing, a transition rod is fixedly connected to the piston rod of the cylinder, a cylinder seat is fixedly connected to the bracket, the cylinder body of the above-mentioned cylinder is fixedly connected to the cylinder seat, and the above-mentioned sleeve assembly is located between the transition rod and the cylinder seat.

[0025] The transition rod provides sufficient space for the jacket assembly to connect.

[0026] In the above-mentioned clamping device for polishing, the sleeve assembly includes a corrugated sleeve and a connecting edge with an annular protrusion on the transition rod, the above-mentioned cylinder is fixedly connected to the lower part of the cylinder seat, the upper end of the above-mentioned corrugated sleeve is fixedly connected to the connecting edge, and the lower end of the corrugated sleeve is fixedly connected to the upper part of the cylinder seat.

[0027] Since the area of ​​the connection edge is relatively large, the upper end of the corrugated sleeve can be stably connected to the connection edge, and the connection method is glue fixed connection.

[0028] The upper part of the cylinder seat also has enough space for the lower end of the bellows sleeve to be connected.

[0029] In the above-mentioned clamping device for polishing, the cylinder seat includes a plate body one and a plate body two in the shape of a plate, the inner end of the above-mentioned plate body two is vertically fixedly connected to the upper end of the plate body one and the plate body one and the plate body two are an integrated structure, the above-mentioned plate body one is in contact with the side surface of the bracket and the two are fixedly connected by fasteners, the cylinder body of the above-mentioned cylinder is fixedly connected to the lower part of the plate body two, and the lower end of the above-mentioned corrugated sleeve is fixedly connected to the upper part of the plate body two.

[0030] The entire cylinder seat can be stably fixedly connected to the bracket through the plate body 1, and the plate body 2 provides sufficient space for the cylinder and the corrugated sleeve to be connected.

[0031] The above-mentioned clamping device for polishing also includes a connecting pipeline, both ends of which are respectively connected to the corresponding cylinders in the two groups of clamping units, and the connecting pipeline is used to be connected to the air pressure system.

[0032] Since the two groups of clamping units are connected to the same air pressure system, the two groups of clamping units can be operated synchronously during the operation of the air pressure system, thereby effectively simplifying the overall structure.

[0033] Compared with the prior art, the clamping device for polishing can stably position the workpiece between the positioning plate and the positioning part, so the workpiece will not shake during the polishing operation, effectively improving the stability of the entire device.

[0034] At the same time, the two groups of clamping units are symmetrically arranged at both ends of the positioning part. Therefore, the structure of the entire device is relatively compact and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the clamping device used for polishing.

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure of the driving member in the clamping device for polishing.

[0037] In the figure, 1, bracket; 1a, positioning part; 2, positioning plate; 2a, hinged part; 2a1, connecting hole; 3, connecting seat; 3a, positioning rod 1; 3b, positioning rod 2; 4, cylinder; 5, pin shaft; 6, transition rod; 6a, connecting edge; 7, cylinder seat; 7a, plate body 1; 7b, plate body 2; 8, corrugated sleeve; 9, connecting pipeline. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0041] like Figure 1 and Figure 2 As shown, the clamping device for polishing includes a bracket 1, and also includes a positioning plate 2, a connecting seat 3, a driving member and a sleeve assembly. The upper part of the bracket 1 has a positioning portion 1a for placing the workpiece to be polished, the connecting seat 3 is fixedly connected to the bracket 1, the lower end of the positioning plate 2 is hinged at the connecting seat 3, the driving member is fixedly connected to the side of the bracket 1 and the driving member is hinged to the positioning plate 2, and the sleeve assembly is connected between the driving member and the positioning plate 2. In the initial state, the upper end of the positioning plate 2 is away from the positioning portion 1a. When the driving member drives the positioning plate 2 to swing around its hinge, the workpiece to be polished can be positioned between the positioning portion 1a and the upper end of the positioning plate 2.

[0042] The positioning plate 2, the connecting seat 3, the driving member and the sheath assembly form a clamping unit. The number of the clamping units is two, and the two groups of clamping units are symmetrically located at both ends of the positioning portion 1a.

[0043] The connecting seat 3 includes a rod-shaped positioning rod 1 3a and a positioning rod 2 3b, the inner ends of which are fixedly connected to both sides of the bracket 1, and the two ends of the positioning plate 2 are hinged to the outer ends of the positioning rod 1 3a and the outer ends of the positioning rod 2 3b.

[0044] The driving member is a cylinder 4 , a cylinder body of the cylinder 4 is fixedly connected to the bracket 1 , and a piston rod of the cylinder 4 is movably connected to the positioning plate 2 .

[0045] The outer side of the positioning plate 2 has a protruding hinge portion 2 a, and the piston rod is hinged at the hinge portion 2 a via a pin 5 .

[0046] The hinge portion 2a has a strip-shaped vertically arranged connecting hole 2a1 , and the pin 5 is passed through the connecting hole 2a1 . The length of the connecting hole 2a1 is greater than the outer diameter of the pin 5 .

[0047] A transition rod 6 is fixedly connected to the piston rod of the cylinder 4 , a cylinder seat 7 is fixedly connected to the bracket 1 , a cylinder body of the cylinder 4 is fixedly connected to the cylinder seat 7 , and the sleeve assembly is located between the transition rod 6 and the cylinder seat 7 .

[0048] The sleeve assembly includes a bellows sleeve 8 and a connecting edge 6a protruding in an annular manner on the transition rod 6. The cylinder 4 is fixedly connected to the lower part of the cylinder seat 7. The upper end of the bellows sleeve 8 is fixedly connected to the connecting edge 6a, and the lower end of the bellows sleeve 8 is fixedly connected to the upper part of the cylinder seat 7.

[0049] The cylinder seat 7 includes a plate body 1 7a and a plate body 2 7b in the form of a plate. The inner end of the plate body 2 7b is vertically fixedly connected to the upper end of the plate body 1 7a and the plate body 1 7a and the plate body 2 7b are an integrated structure. The plate body 1 7a is in contact with the side surface of the bracket 1 and the two are fixedly connected by fasteners. The cylinder body of the cylinder 4 is fixedly connected to the lower part of the plate body 2 7b, and the lower end of the corrugated sleeve 8 is fixedly connected to the upper part of the plate body 2 7b.

[0050] It also includes a connecting pipeline 9, both ends of which are respectively connected to the corresponding cylinders 4 in the two groups of clamping units, and the connecting pipeline 9 is used to connect to the air pressure system.

[0051] The clamping device for polishing stably connects the positioning plate to the end of the bracket through the connecting seat. Since the driving member fixed to the bracket is hinged with the positioning plate, the driving member can drive the positioning plate to swing around it.

[0052] In the initial state, the positioning plate is away, and the workpiece can be smoothly and stably placed in the positioning part. After the driving member drives the positioning plate to swing around its hinge, the positioning plate is buckled at the edge of the workpiece. At this time, the workpiece is tightly pressed between the positioning plate and the positioning part, ensuring that the workpiece is stably positioned at the clamping device.

[0053] On the contrary, after the driving member drives the positioning plate to swing in the opposite direction around its hinge, the workpiece after the polishing operation is completed can be stably taken out from the positioning portion.

[0054] Since the driving member will be displaced during its operation, the connection between the driving member and the positioning plate is covered by the sheath assembly, which can effectively prevent impurities from entering the displacement structure of the driving member and appropriately improve the overall stability.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A clamping device for polishing, comprising a bracket (1), characterized in that: The invention also comprises a positioning plate (2), a connecting seat (3), a driving member and a sheath assembly. The upper part of the support (1) has a positioning portion (1a) for placing a workpiece to be polished. The connecting seat (3) is fixedly connected to the support (1). The lower end of the positioning plate (2) is hinged at the connecting seat (3). The driving member is fixedly connected to the side of the support (1) and is hinged to the positioning plate (2). The sheath assembly is connected between the driving member and the positioning plate (2). In the initial state, the upper end of the positioning plate (2) is away from the positioning portion (1a). When the driving member drives the positioning plate (2) to swing around its hinge, the workpiece to be polished can be positioned between the positioning portion (1a) and the upper end of the positioning plate (2).

2. The clamping device for polishing according to claim 1, characterized in that: The positioning plate (2), the connecting seat (3), the driving member and the sheath assembly form a clamping unit, the number of the clamping units is two, and the two groups of clamping units are symmetrically located at the two ends of the positioning portion (1a).

3. The clamping device for polishing according to claim 2, characterized in that: The connecting seat (3) comprises a rod-shaped positioning rod 1 (3a) and a positioning rod 2 (3b), the inner ends of the positioning rod 1 (3a) and the positioning rod 2 (3b) being respectively fixedly connected to the two sides of the bracket (1), and the two ends of the positioning plate (2) are respectively hinged to the outer ends of the positioning rod 1 (3a) and the outer ends of the positioning rod 2 (3b).

4. The clamping device for polishing according to claim 3, characterized in that: The driving member is a cylinder (4), the cylinder body of the cylinder (4) is fixedly connected to the bracket (1), and the piston rod of the cylinder (4) is movably connected to the positioning plate (2).

5. The clamping device for polishing according to claim 4, characterized in that: The outer side of the positioning plate (2) has a protruding hinge portion (2a), and the piston rod is hinged at the hinge portion (2a) via a pin shaft (5).

6. The clamping device for polishing according to claim 5, characterized in that: The hinged portion (2a) has a strip-shaped vertically arranged connecting hole (2a1), the pin shaft (5) is inserted through the connecting hole (2a1), and the length of the connecting hole (2a1) is greater than the outer diameter of the pin shaft (5).

7. The clamping device for polishing according to claim 6, characterized in that: A transition rod (6) is fixedly connected to the piston rod of the cylinder (4), a cylinder seat (7) is fixedly connected to the bracket (1), a cylinder body of the cylinder (4) is fixedly connected to the cylinder seat (7), and the sleeve assembly is located between the transition rod (6) and the cylinder seat (7).

8. The clamping device for polishing according to claim 7, characterized in that: The jacket assembly comprises a bellows (8) and a connecting edge (6a) protruding in an annular manner on a transition rod (6); the cylinder (4) is fixedly connected to the lower part of a cylinder seat (7); the upper end of the bellows (8) is fixedly connected to the connecting edge (6a); and the lower end of the bellows (8) is fixedly connected to the upper part of the cylinder seat (7).

9. The clamping device for polishing according to claim 8, characterized in that: The cylinder seat (7) comprises a plate body 1 (7a) and a plate body 2 (7b) in the form of a plate. The inner end of the plate body 2 (7b) is vertically fixedly connected to the upper end of the plate body 1 (7a) and the plate body 1 (7a) and the plate body 2 (7b) are an integrated structure. The plate body 1 (7a) is in contact with the side surface of the bracket (1) and the two are fixedly connected by fasteners. The cylinder body of the cylinder (4) is fixedly connected to the lower part of the plate body 2 (7b), and the lower end of the corrugated sleeve (8) is fixedly connected to the upper part of the plate body 2 (7b).

10. The clamping device for polishing according to claim 9, characterized in that: It also comprises a connecting pipeline (9), the two ends of which are respectively connected to the corresponding cylinders (4) in the two groups of clamping units, and the connecting pipeline (9) is used to be connected to the air pressure system.

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