Boring and milling clamp for large shaft parts

Abstract

The utility model relates to a boring and milling fixture for large shaft parts, which adopts a surface contact scheme to stably clamp and improve the processing precision of products, and comprises a V-shaped fixture body, the V-shaped fixture body is provided with a plurality of fixture characteristic bodies according to the sizes of the parts, and each fixture characteristic body is of an axisymmetric structure and is formed by casting. The center of the clamp characteristic body is provided with a V-shaped groove surface characteristic body, and the clamp characteristic body is reinforced by a rib plate in the vertical direction; meanwhile, grooves for fixing the side plates are formed in the two sides in the horizontal direction, and a U-shaped notch and a lifting bolt are arranged on a bottom plate of the clamp characteristic body. The boring and milling clamp is simple in overall structure and very convenient to assemble and disassemble, and meanwhile shaft parts with different diameters within a certain range can be adaptively adjusted; wherein the pressing block is in surface contact with the shaft piece, so that the stability in the boring and milling process and the part machining precision can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a boring and milling fixture used for large shaft parts. Background Art

[0002] In current production and processing environments, boring the inner and outer diameters of shafts requires a boring and milling fixture to secure the parts. Traditional boring and milling fixtures place the shaft on a V-shaped clamping base, then place a long pressure plate on the upper end of the shaft. This long pressure plate has poor rigidity, and the contact between the pressure plate and the shaft is generally linear, making it difficult to clamp the part tightly and hindering machining accuracy.

[0003] In order to overcome the above problems, a new type of boring and milling fixture needs to be proposed to improve the stability of the boring and milling process of large shaft parts and improve the processing accuracy. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a boring and milling fixture for large shaft parts, which adopts a surface contact solution to firmly clamp and improve the processing accuracy of the product, including a V-shaped clamp body, wherein the V-shaped clamp body is provided with a plurality of clamp feature bodies according to the size of the part, wherein a single clamp feature body is an axisymmetric structure and is cast, a V-shaped groove surface feature is provided at the center of the clamp feature body, and the clamp feature body is reinforced with ribs in the vertical direction; at the same time, grooves for fixing side plates are provided on both sides in the horizontal direction, and the bottom plate of the clamp feature body is provided with a U-shaped notch and eye screws;

[0005] The side panels are assembled between the fixture feature bodies through screws. At the same time, after the parts are placed in the V-shaped clamp body, several groups of clamping blocks are provided between the side panels and the side walls of the parts. The upper end faces of the side panels and the upper end faces of the clamping blocks are on the same horizontal plane. As shown in the figure, a pressure plate is provided in the height direction of the clamping blocks to assist in assembly and clamping. In addition, the side faces of the pressure plate are provided on the side panels and are assembled and clamped with them through screws II and washers.

[0006] In one embodiment of the present invention, the integral V-shaped clamp specifically adjusts the gap and number of the clamp features according to the length of the shaft.

[0007] In one embodiment of the present invention, the U-shaped notch is assembled and connected to the workbench of the machine tool through bolts.

[0008] In one embodiment of the present invention, the bottom of the V-groove surface feature is a plane, which does not interfere with the clamped shaft parts, while reducing the height of the clamp body and lightening the weight of the clamp body.

[0009] In one embodiment of the present invention, the contact surface between the pressing block and the component is a curved surface feature, and is consistent with the curvature of the component. The pressing block can be replaced according to the different diameters of the shaft.

[0010] The above technical solution of the present invention has the following advantages over the existing technology: the boring and milling fixture described in the present invention has a simple overall structure and is very convenient to assemble and disassemble. At the same time, it can be adaptively adjusted to shaft parts with different diameters within a certain range; the clamping method will not cause the round tube parts to lose their roundness and deformation, and the clamping block and the shaft part are in surface contact, which can effectively improve the stability and part processing accuracy during the boring and milling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0012] Figure 1 This is a three-dimensional schematic diagram of the use process of the boring and milling fixture of the utility model for large shaft parts;

[0013] Figure 2 It is a side view of the boring and milling fixture of the utility model;

[0014] Figure 3 It is a top view of the boring and milling fixture of the present invention.

[0015] As shown in the figure, 1- fixture feature body; 2- lifting eye screw; 3- clamping block; 4- pressure plate; 5- screw; 6- washer; 7- side plate; 8- screw. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, this embodiment provides a boring and milling fixture for large shaft parts. The boring and milling fixture adopts a surface contact solution for stable clamping to improve product processing accuracy. It includes a V-shaped clamp body. The V-shaped clamp body is provided with a plurality of clamp feature bodies 1 according to the size of the part. Among them, a single clamp feature body 1 is an axisymmetric structure and is cast. A V-shaped groove surface feature is provided at the center of the clamp feature body 1. The clamp feature body 1 is reinforced with ribs in the vertical direction; at the same time, grooves for fixing side plates 7 are provided on both sides in the horizontal direction, and the bottom plate of the clamp feature body 1 is provided with a U-shaped notch and a lifting eye screw 2;

[0017] The side plate 7 is assembled with the fixture feature body 1 by screws 8. At the same time, after the part is placed in the V-shaped fixture body, several groups of pressing blocks 3 are provided between the side plate 7 and the side wall of the part. The upper end surface of the side plate 7 and the upper end surface of the pressing block 3 are on the same horizontal plane. Figure 3As shown, a pressure plate 4 is provided in the height direction of the pressure block 3 to assist in assembly and clamping. In addition, the side of the pressure plate 4 is provided on the side plate 7 and is assembled and clamped therewith by screws II 5 and washers 6.

[0018] The overall V-shaped clamp specifically adjusts the gap and quantity of the clamp feature body 1 according to the length of the shaft.

[0019] The U-shaped notch is connected to the workbench of the machine tool through bolts.

[0020] The bottom of the V-groove surface feature is flat, which does not interfere with the shaft parts after clamping, and at the same time reduces the height of the clamp body and reduces the weight of the clamp body.

[0021] The contact surface between the pressing block 3 and the part is a curved surface feature and is consistent with the curvature of the part. The pressing block can be replaced according to the different diameters of the shaft.

[0022] The boring and milling fixture of this embodiment features a simple overall structure and is easy to assemble and disassemble. Shafts with varying diameters within a certain range can be processed by replacing the clamping block 3 and side plates 7. Shafts of varying lengths can be processed by increasing the number of fixtures and adjusting the distance between the V-shaped clamps. The surface contact between the clamping block and the shaft effectively improves stability and part processing accuracy during the boring and milling process.

[0023] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A boring and milling fixture for large shaft parts, which adopts a surface contact solution to firmly clamp and improve product processing accuracy, and is characterized by: The invention comprises a V-shaped clamp body, wherein the V-shaped clamp body is provided with a plurality of clamp feature bodies (1) according to the size of the parts, wherein a single clamp feature body (1) is an axisymmetric structure and is cast, a V-shaped groove surface feature is provided at the center of the clamp feature body (1), and the clamp feature body (1) is reinforced with a rib plate in the vertical direction; at the same time, grooves for fixing side plates (7) are provided on both sides in the horizontal direction, and a U-shaped notch and a lifting eye screw (2) are provided on the bottom plate of the clamp feature body (1); The side plate (7) is assembled with the fixture feature body (1) by means of screws (8). At the same time, after the part is placed in the V-shaped clamp body, a plurality of groups of clamping blocks (3) are provided between the side plate (7) and the side wall of the part. The upper end surface of the side plate (7) and the upper end surface of the clamping block (3) are on the same horizontal plane. A pressing plate (4) is also provided in the height direction of the clamping block (3) to assist in assembly and clamping. In addition, the side surface of the pressing plate (4) is provided on the side plate (7) and is assembled and clamped with the side plate (7) by means of screws II (5) and washers (6).

2. The boring and milling fixture according to claim 1, characterized in that: The overall V-shaped clamp specifically adjusts the gap and quantity of the clamp feature body (1) according to the length of the shaft.

3. The boring and milling fixture according to claim 1, characterized in that: The U-shaped notch is connected to the workbench of the machine tool through bolts.

4. The boring and milling fixture according to claim 1, characterized in that: The bottom of the V-groove surface feature is flat, which does not interfere with the shaft parts after clamping, and at the same time reduces the height of the clamp body and reduces the weight of the clamp body.

5. The boring and milling fixture according to claim 1, characterized in that: The contact surface between the pressing block (3) and the part is a curved surface feature and is consistent with the curvature of the part.

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