Multi-station multi-direction stress clamping fixture

Abstract

The utility model discloses a multi-station multidirectional stress clamping fixture which comprises a base, a plurality of concentric positioning rings are arranged on the base, an annular positioning area is arranged between every two adjacent inner and outer positioning rings, a first clamping device is arranged on the outermost positioning ring, and second clamping devices are arranged on the other positioning rings. The clamping position of the first clamping device corresponds to the clamping position of the second clamping device, a positioning plate is arranged in the center of the innermost positioning ring, the second clamping device is arranged on the positioning plate, and therefore multiple cylindrical parts with different diameters can be clamped on one clamp at multiple stations at the same time. And the machining efficiency of the type of parts is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fixture tooling, more particularly to a multi-station multidirectional stress clamping fixture. BACKGROUND

[0002] When machining the end face of a cylindrical part (including planar machining, drilling, milling, milling steps, etc.), the part is positioned and placed, and then clamped using a clamping mechanism on the inner hole wall or outer side face. One type of cylindrical part includes multiple sizes, and the larger inner diameter part can be fitted on the smaller outer diameter part. The processing types of this type of part are the same. In the traditional processing method, multiple similar fixtures are designed for each size of the part. When the size of the part changes, the fixture needs to be replaced. Therefore, two or more of this type of part cannot be machined simultaneously on one fixture. Only one size of the part can be machined, and then the fixture needs to be replaced for machining the next size of the part, resulting in low efficiency. SUMMARY

[0003] To overcome the shortcomings of the prior art, the utility model provides a multi-station multidirectional stress clamping fixture, which can simultaneously clamp multiple cylindrical parts of different diameters in multiple stations on one fixture, greatly improving the processing efficiency of this type of part.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multi-station multidirectional stress clamping fixture, comprising a base, a plurality of concentric positioning rings are arranged on the base, the annular positioning area is arranged between adjacent inner and outer positioning rings, the first clamping device is arranged on the outermost positioning ring, the second clamping device is arranged on the other positioning rings, the clamping positions of the first clamping device and the second clamping device correspond to each other, and the center of the innermost positioning ring is provided with a positioning plate, and the second clamping device is arranged on the positioning plate.

[0005] Further, the first clamping device comprises a first support block, a first cylinder is arranged on the first support block, and an arc-shaped clamping plate is arranged on the piston rod of the first cylinder.

[0006] Further, the second clamping device comprises a second support block, a second cylinder and two clamping blocks are arranged on the second support block, the two clamping blocks are in sliding connection with the second support block, a wedge-shaped block is arranged on the piston rod of the second cylinder, the two clamping blocks are located on the two sides of the wedge-shaped block, the clamping blocks and the wedge-shaped block are in contact with each other through the wedge-shaped surface, a connecting convex strip is arranged on the wedge-shaped surface of the wedge-shaped block, and a connecting groove corresponding to the connecting convex strip is arranged on the clamping block.

[0007] Further, the clamping surface of one of the clamping blocks is an arc-shaped convex surface, and the clamping surface of the other clamping block is an arc-shaped concave surface.

[0008] Further, the positioning ring and the positioning plate are detachably connected between the base.

[0009] Compared with the prior art, the beneficial effects of the utility model are that after placing the connecting positioning ring and the positioning plate on the base, placing the corresponding cylindrical part in the corresponding annular positioning area, and then starting the first clamping device and the second clamping device, the inner and outer walls of the part are clamped on the same plane, thereby fixing the part, realizing the clamping of multiple cylindrical parts with different diameters on one clamp, and greatly improving the processing efficiency of the type of part. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a front structure schematic view of the utility model multi-station multi-direction stress clamping fixture.

[0011] Figure 2 It is a structure schematic view of the utility model multi-station multi-direction stress clamping fixture when clamping parts.

[0012] Figure 3 It is a structure schematic view of the second clamping mechanism in the utility model multi-station multi-direction stress clamping fixture.

[0013] Figure 4 It is Figure 3 A-A cross-sectional view.

[0014] The drawings show that: base 1; positioning ring 2; annular positioning area 3; first clamping device 4; second clamping device 5; positioning plate 6; first cylinder 7; arc-shaped clamping plate 8; second support block 9; second cylinder 10; first support block 11; clamping block 12; wedge block 13; connecting convex strip 14; connecting groove 15; arc convex surface 16; arc concave surface 17; cylindrical part 18. DETAILED DESCRIPTION

[0015] In the description of the utility model, it should be explained that for the direction words, such as the term "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0016] In addition, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first", "second" features can explicitly or implicitly include one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise explicitly specified.

[0017] Referring to Figures 1 to 4 Further illustrate the utility model.

[0018] A multi-station multi-directional force clamping fixture, comprising a base 1, a plurality of concentric positioning rings 2 are arranged on the base 1, annular positioning areas 3 are arranged between adjacent inner and outer positioning rings 2, a first clamping device 4 is arranged on the outermost positioning ring 2, a second clamping device 5 is arranged on the other positioning rings 2, the clamping positions of the first clamping device 4 and the second clamping device 5 correspond to each other, a positioning plate 6 is arranged at the center of the innermost positioning ring 2, and the second clamping device 5 is arranged on the positioning plate 6.

[0019] As Figure 1 shown, preferably in the present example, the first clamping device 4 comprises a first support block 11, a first cylinder 7 is arranged on the first support block 11, and an arc-shaped clamping plate 8 is arranged on the piston rod of the first cylinder 7.

[0020] As Figure 3 shown, preferably in the present example, the second clamping device 5 comprises a second support block 9, a second cylinder 10 and two clamping blocks 12 are arranged on the second support block 9, the two clamping blocks 12 are slidably connected with the second support block 9, a wedge-shaped block 13 is arranged on the piston rod of the second cylinder 10, the two clamping blocks 12 are respectively located on the two sides of the wedge-shaped block 13, the clamping block 12 and the wedge-shaped block 13 are in contact with each other through a wedge surface, a connecting convex strip 14 is arranged on the wedge surface of the wedge-shaped block 13, and a connecting groove 15 corresponding to the connecting convex strip 14 is arranged on the clamping block 12.

[0021] Specifically, each positioning ring 2 can also be composed of a plurality of fan-shaped positioning blocks, and a certain gap can be left between the plurality of fan-shaped positioning blocks.

[0022] Specifically, when the fan-shaped positioning block is used, the first support block 11 and the second support block 9 can also be placed on the base 1 in the form of a bracket.

[0023] As Figure 4 shown, preferably in the present example, the clamping surface of one of the clamping blocks 12 is an arc-shaped convex surface 16, and the clamping surface of the other clamping block 12 is an arc-shaped concave surface 17, so that the two clamping blocks 12 located between the two parts respectively contact the inner wall of the outer part and the outer wall of the inner part.

[0024] In this example, preferably, the positioning ring 2 and the positioning plate 6 are detachably connected to the base 1, which facilitates the replacement of different positioning rings 2 and positioning plates 6, and enables optimal positioning of cylindrical parts of different thicknesses.

[0025] Specifically, the base 1 is provided with several strip-shaped through grooves, which are distributed circumferentially, and the length direction of the strip-shaped through grooves coincides with the radius line. The positioning ring 2 and the positioning plate 6 are connected to the base 1 through the strip-shaped through grooves using bolts and nuts.

[0026] like Figures 1 to 4 As shown, after placing several positioning rings 2 and positioning plates 6 on the base 1, the corresponding cylindrical parts 18 are placed in the corresponding annular positioning area 3. Then, the first clamping device 4 and the second clamping device 5 are activated to clamp the inner and outer walls of the parts on the same plane, thereby fixing the parts. This allows multiple cylindrical parts 18 of different diameters to be clamped simultaneously in one fixture at multiple stations, greatly improving the processing efficiency of this type of part.

[0027] Specifically, if the height of the cylindrical parts 18 is not uniform, the parts should be placed in order from the outside of the base 1 to the center, from low to high.

[0028] Specifically, the first support block 11 and the second support block 9 can be configured to have a lifting function to change the clamping position. The lifting function can be implemented manually or electrically. The manual structure can use a screw to lift, while the electric structure can use an electric telescopic rod for driving.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A multi-station multi-directional force clamping fixture, characterized by: The base is provided with a plurality of concentric positioning rings, annular positioning areas between adjacent inner and outer positioning rings, a first clamping device on the outermost positioning ring, a second clamping device on other positioning rings, the clamping positions of the first clamping device and the second clamping device corresponding to each other, and a positioning plate at the center of the innermost positioning ring, the positioning plate being provided with the second clamping device.

2. The multi-station, multi-directional force clamping fixture of claim 1, wherein: The first clamping device comprises a first support block provided with a first cylinder, and an arc-shaped clamping plate provided on the piston rod of the first cylinder.

3. The multi-station, multi-directional force clamping fixture of claim 2, wherein: The second clamping device comprises a second support block provided with a second cylinder and two clamping blocks, the two clamping blocks being in sliding connection with the second support block, a wedge-shaped block provided on the piston rod of the second cylinder, the two clamping blocks being located on the two sides of the wedge-shaped block and in contact with the wedge-shaped block through wedge-shaped surfaces, a connecting protrusion provided on the wedge-shaped surface of the wedge-shaped block, and a connecting groove corresponding to the connecting protrusion provided on the clamping block.

4. The multi-station, multi-directional force clamping fixture of claim 3, wherein: The clamping surface of one clamping block is an arc-shaped convex surface, and the clamping surface of the other clamping block is an arc-shaped concave surface.

5. The multi-station, multi-directional force clamping fixture of claim 1, wherein: The positioning ring and the positioning plate are detachably connected with the base.

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