Auxiliary supporting device for machining outer circle of part with large length-diameter ratio

Abstract

The utility model relates to the field of aviation machining, in particular to an auxiliary supporting device for machining an outer circle of a part with a large length-diameter ratio. The device comprises a support, a bearing bolt, a sliding supporting assembly and a bearing. The lower end of the support is connected with a machine tool guide rail, the upper end of the support is provided with sliding grooves which are perpendicular to each other and avoid each other, the sliding supporting assemblies in sliding fit are installed in the sliding grooves respectively, the V-shaped ends of the two sliding supporting assemblies are opposite, the bearings are installed at the V-shaped ends through bearing bolts, and part of the outer circles of the bearings exceed the V-shaped ends. The two bearings abut against the outer circle of the part to be machined from the upper portion and the rear portion respectively.

Description

Technical Field

[0001] This utility model relates to the field of aerospace machining, and in particular to an auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio. Background Technology

[0002] As a key component of hydraulic servo valves, the flexible rod connects various components and plays a crucial role in connection. Even slight changes in its size and shape can lead to variations in the performance of the hydraulic servo valve. Flexible rods range in length from 200 to 300 mm, with length-to-diameter ratios around 80, and some even reaching 100. They are considered extremely weak stiffness components, and their deformation during machining has always been a challenging problem in the field of mechanical processing.

[0003] Due to their extremely low rigidity, flexible rods are more significantly affected by radial cutting forces during machining. This manifests as noticeable tool deflection, leading to low machining accuracy, poor straightness, difficulty in ensuring product consistency, and low assembly pass rate. To reduce bending deformation during machining, operators typically reduce the depth of cut. However, this method severely reduces machining efficiency and has no significant effect on improving machining deformation. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio that offers high processing efficiency and stable and reliable processing quality.

[0005] The technical solution of this utility model is:

[0006] An auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio is provided, comprising: a bracket, bearing bolts, a sliding support assembly, and a bearing;

[0007] The lower end of the bracket is connected to the machine tool guide rail, and the upper end of the bracket is provided with mutually perpendicular and non-collision sliding grooves. A sliding support component is installed in each sliding groove. The V-shaped ends of the two sliding support components are opposite to each other, and the bearing is installed on the V-shaped end by bearing bolts. The outer circle of the bearing part extends beyond the V-shaped end.

[0008] Two bearings press against the outer circle of the part to be machined from above and behind, respectively.

[0009] Furthermore, the sliding support assembly includes: a pad, a slider, a slider bolt, a fixing bolt, a connecting block, and an adjusting bolt;

[0010] The top opening of the slider is V-shaped, and the bottom of the slider is connected to the adjusting bolt 8 by fixing bolts and connecting blocks. The side of the slider has a long groove along the height, and the slider bolts and pads cooperate with the long groove to fix the slider.

[0011] The slider is used to support the bearing and adjust its position; the slider bolt is used to fix the slider and its tightness can be adjusted to adjust the slider's position; the fixing bolt fixes the slider and the connecting block; the connecting block connects the slider and the bolt; one end of the adjusting bolt is screwed into the bracket, and the other end is fixed to the slider through the connecting block, which can adjust the slider's position.

[0012] Furthermore, when the bearing is working, it presses against the outer circle of the part to prevent the part from bending radially, while rotating with the part.

[0013] Furthermore, the device is fixed on the machine tool guide rail, providing support force in the X and Y directions; the device adjusts the distance between the support point and the center of the machine tool spindle through a slider to adapt to parts of different specifications; the device contacts the outer circle of the workpiece through bearings, reducing the friction between the workpiece and the device through line contact and rolling.

[0014] Furthermore, the entire device is fixed on the machine tool guide rail, and the positions of the sliders in two directions are adjusted by bolts to make them press against the outer circle of the part to be processed, so as to adapt to parts of different specifications.

[0015] Furthermore, the two bearings come into contact with the part to be processed, and the bearings are in line contact with the outer circle of the part, and rotate as the part rotates.

[0016] Beneficial effects:

[0017] The device provided by this invention produces parts with good axial consistency, high product precision, and significantly improved production efficiency. This invention changes surface contact to line contact and sliding to rolling, greatly reducing part wear, decreasing component replacement frequency, and improving processing efficiency and consistency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1a This is a schematic diagram of the structure of an auxiliary support device for machining the outer diameter of a part with a large length-to-diameter ratio, provided in an embodiment of this application;

[0020] Figure 1b This is a schematic diagram of the structure of an auxiliary support device for machining the outer diameter of a part with a large length-to-diameter ratio, provided in an embodiment of this application. Figure 2 ;

[0021] Figures 2-10 This is a schematic diagram of an auxiliary support device for machining the outer diameter of a part with a large length-to-diameter ratio, provided in an embodiment of this application.

[0022] Wherein: 1-bracket; 2-bearing bolt; 3-pad; 4-slider; 5-slider bolt; 6-fixing bolt; 7-connecting block; 8-adjusting bolt; 9-bearing. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0025] This invention provides an auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio. Taking a flexible rod as an example, by installing this device on the machine tool and adjusting the position of the slider to press it against the outer diameter of the flexible rod, the radial force generated by cutting is counteracted. At the same time, the friction between the part and the device is reduced through line contact and rolling.

[0026] This utility model provides an auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio, such as... Figure 1a-10 As shown, it includes: bracket 1, bearing bolt 2, sliding support assembly, and bearing 9;

[0027] The lower end of the bracket 1 is connected to the machine tool guide rail. The upper end of the bracket 1 is provided with mutually perpendicular and non-collision sliding grooves. A sliding support assembly is installed in each sliding groove. The V-shaped ends of the two sliding support assemblies are opposite to each other. The bearing 9 is installed on the V-shaped end by bearing bolt 2. The outer circle of the bearing part extends beyond the V-shaped end.

[0028] Two bearings press against the outer circle of the part to be machined from above and behind, respectively.

[0029] The sliding support assembly includes: pad 3, slider 4, slider bolt 5, fixing bolt 6, connecting block 7, and adjusting bolt 8;

[0030] The top opening of slider 4 is V-shaped. The bottom of slider 4 is connected to adjusting bolt 8 by fixing bolt 6 and connecting block 7. A long groove along the height is opened on the side of slider 4. Slider bolt 5 and pad 3 cooperate with the long groove to fix slider.

[0031] Slider 4 is used to support the bearing and adjust the bearing position; slider bolt 5 is used to fix the slider and can be adjusted to adjust the slider position; fixing bolt 6 fixes the slider and connecting block; connecting block 7 connects the slider and bolt; adjusting bolt 8 is screwed into the bracket on one end and fixed to the slider through the connecting block on the other end, and can adjust the slider position.

[0032] When bearing 9 is working, it presses against the outer circle of the part to prevent the part from bending radially, while rotating with the part.

[0033] The usage method is as follows:

[0034] Install the device at a suitable position on the machine tool guide rail; clamp the flexible rod and tighten it against the machine tool tailstock; adjust the position of the device on the machine tool guide rail so that it is near the area to be processed, but offset from the area to be processed by a certain distance to avoid cutting into the effective support position of the slide bearing and causing it to lose its support capacity, and then tighten the bolts to fix it; adjust the position of the slide to make it press against the outer circle of the flexible rod, and then tighten the screws to fix it; start processing the outer circle of the flexible rod. The device should be adjusted synchronously with the processing area and should not be too far away from the area to be processed, so as not to reduce the effective support force provided by the device.

[0035] The machining method using this fixture may include the following steps:

[0036] S1, fix the device to the machine tool guide rail, loosen bolts ⑤ and 8 to open the two sliders 4 so that the parts can be clamped;

[0037] S2, Install and clamp the part to be processed onto the machine tool, and tighten it with the tailstock;

[0038] S3, determine the area to be processed, then adjust the position of the device on the machine tool guide rail, and then fix it;

[0039] S4, adjust the position of slider 4 so that it is pressed against the outer circle of the part, and then tighten bolts 5 and 8 to fix it;

[0040] S5, during the processing, as the processing position changes, the position of the device is adjusted synchronously to place it near the area to be processed in order to provide effective support.

[0041] This invention solves the problem of bending deformation that easily occurs in typical flexible rod products during turning. The device provides support in both the X and Y axes, effectively reducing bending deformation caused by radial cutting forces during machining. It changes the original surface contact to line contact and sliding to rolling, significantly reducing part wear. Furthermore, because it provides support in the symmetrical direction of the cutting force, a larger depth of cut can be used during machining, and the reduced need for frequent replacement of worn parts greatly improves machining efficiency. Finally, the adjustable slider mechanism can adapt to parts of different specifications, making the device highly versatile.

[0042] It should be noted that, without conflict, those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps as needed.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. An auxiliary support device for machining the outer diameter of parts with a large length-to-diameter ratio, characterized in that, include: Bracket (1), bearing bolt (2), sliding support assembly, bearing (9); The lower end of the bracket (1) is connected to the machine tool guide rail. The upper end of the bracket (1) is provided with mutually perpendicular and avoidance sliding grooves. Each sliding groove is equipped with a sliding support component that is in sliding fit. The V-shaped ends of the two sliding support components are opposite to each other. The bearing (9) is installed on the V-shaped end through the bearing bolt (2). The outer circle of the bearing part extends beyond the V-shaped end. Two bearings press against the outer circle of the part to be machined from above and behind, respectively.

2. The apparatus according to claim 1, characterized in that, The sliding support assembly includes: a pad (3), a slider (4), a slider bolt (5), a fixing bolt (6), a connecting block (7), and an adjusting bolt (8); The top opening of the slider (4) is a V-shaped end. The bottom of the slider (4) is connected to the adjusting bolt (8) by the fixing bolt (6) and the connecting block (7). The side of the slider (4) has a long groove along the height. The slider bolt (5) and the pad (3) cooperate with the long groove to fix the slider. The slider (4) is used to support the bearing and adjust the bearing position; the slider bolt (5) is used to fix the slider and can be adjusted to adjust the slider position; the fixing bolt (6) fixes the slider and the connecting block; the connecting block (7) connects the slider and the bolt; the adjusting bolt (8) is screwed into the bracket on one end and fixed to the slider through the connecting block on the other end, and can adjust the slider position.

3. The apparatus according to claim 1, characterized in that, When the bearing (9) is working, it presses against the outer circle of the part to prevent the part from bending radially, while rotating with the part.

4. The apparatus according to claim 1, characterized in that, The device is fixed on the machine tool guide rail and provides support in the X and Y directions; the device adjusts the distance between the support point and the center of the machine tool spindle by a slider to adapt to parts of different specifications; the device contacts the outer circle of the workpiece through bearings, and reduces the friction between the workpiece and the device through line contact and rolling.

5. The apparatus according to claim 1, characterized in that, The entire device is fixed on the machine tool guide rail. The positions of the sliders in two directions are adjusted by bolts to make them press against the outer circle of the part to be processed, so as to adapt to parts of different specifications.

6. The apparatus according to claim 1, characterized in that, Two bearings are in contact with the part to be processed. The bearings are in line contact with the outer circle of the part and rotate with the part.

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