Thin-wall sleeve positioning tool
Through a thin-wall sleeve positioning tool including upper and lower segment discs, threaded tie rods, nuts and positioning pins, the problem of easy deformation of thin-wall sleeves and difficult to guarantee the accuracy of hole position during processing is solved, and high-precision thin-wall sleeve processing is achieved.
Patent Information
- Application Number
- CN202421587523.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-06
AI Technical Summary
The prior art is difficult to effectively fix the thin-walled sleeve, which leads to the easy deformation of the thin-walled workpiece during processing, and the accuracy and coaxiality of the hole position cannot be guaranteed.
A thin-wall sleeve positioning tool is adopted, including upper and lower segments, threaded tie rods, nuts and positioning pins. Through the cooperation of these components, the thin-wall sleeve can be fixed with high precision and completed the processing of radial holes.
The tooling can effectively avoid deformation of the thin-wall sleeve during processing, ensure the accuracy and coaxiality of the hole position, and protect the surface of the thin-wall sleeve from scratches.
Smart Images
Figure CN222986319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a thin-wall sleeve positioning tool, in particular to a thin-wall sleeve radially equally divided bench drill and plow hole tool. Background Art
[0002] Drilling and plowing holes for thin-walled pipes are common technical problems. The following technical problems exist in the actual processing process:
[0003] 1) When the existing vise and clamp arm fix thin-walled pipe fittings, it is not easy to disassemble and cannot improve its machining strength, and the thin-walled workpiece is easy to deform during the machining process;
[0004] 2) The existing fixing method cannot guarantee the position and equal division requirements of each hole. In particular, when the drill plow processes 10-Φ8.2×90° countersinks, it is difficult to ensure the coaxiality requirements with the through hole, and secondary deformation is prone to occur;
[0005] 3) When the fitter turns the drill plow holes multiple times, the surface of the thin-walled sleeve (i.e. the outer shell) is easily scratched.
[0006] How to reliably complete the processing and positioning of thin-walled casing and ensure its processing dimensional accuracy, form and position tolerance and flatness requirements has become a technical challenge in this field. Utility Model Content
[0007] In view of this, the utility model proposes a thin-walled sleeve positioning tool, which serves as a lightweight, special-shaped guide head shell. The tool can reliably fix the thin-walled sleeve and complete the radial hole processing with high precision. Compared with the existing vise and clamp arm fixing method, it has the characteristics of simple clamping, high mechanical strength, and the product is not easy to deform.
[0008] The utility model solves the above problems through the following technical means:
[0009] A thin-walled sleeve positioning tool, characterized in that it is used to fix the thin-walled sleeve, and comprises an upper dividing disk, a lower dividing disk, a threaded pull rod, a nut and a positioning pin, wherein: the thin-walled sleeve is an arc-surface tapered tube, and a plurality of radial holes are symmetrically provided at the large end of the thin-walled sleeve; the upper dividing disk is composed of an upper regular polygonal disk and an upper positioning frustum, an upper through hole is provided in the middle of the upper dividing disk, and positioning holes are provided on the side of the upper positioning frustum corresponding to the positions of the radial holes; the lower dividing disk is composed of a lower regular polygonal disk and a lower positioning circular cavity, and a lower through hole is provided in the middle of the lower dividing disk; the threaded pull rod passes through the upper through hole, the interior of the thin-walled sleeve and the lower through hole in sequence; the two nuts are respectively installed at both ends of the threaded pull rod to fix the thin-walled sleeve, the upper dividing disk and the lower dividing disk as a whole; the positioning pin is installed in the positioning hole after passing through the radial hole.
[0010] Preferably, a positioning ring platform is arranged inside the large port of the thin-wall sleeve. The small port of the thin-wall sleeve is first turned inward along the radial direction and then turned outward along the axial direction to form a butt joint pipe orifice.
[0011] Preferably, positioning lifting lugs are installed on the side surface of the upper regular polygon-shaped disc, and there are lug holes at the positions of the positioning holes.
[0012] Preferably, the upper regular polygon-shaped disc and the lower regular polygon-shaped disc are of a regular hexagon or regular octagon structure.
[0013] Preferably, the ratio of the diameter to the wall thickness of the thin-wall sleeve is 50:1 to 60:1.
[0014] A thin-wall sleeve positioning tool of the present utility model has the following beneficial effects:
[0015] 1) This tool solves the problems of how to clamp and machine the radial equally divided holes of the thin-wall sleeve, that is, the outer shell body, by a fitter. After clamping, due to the supporting effect of the upper equalizing disc and the lower equalizing disc, deformation of the thin-wall sleeve is avoided during machining, and the positions and equalizing precisions of the equally divided holes are effectively maintained. Due to the positioning pins acting in the positioning holes, when drilling each counterbore, the coaxiality of the diameter hole and the drilling hole is ensured, and due to the supporting effect of the disc body, secondary deformation of the thin-wall sleeve is avoided; when machining each equally divided hole, although the thin-wall sleeve, that is, the outer shell body, is turned over many times, it is only the tool that is turned over, and the surface of the outer shell body is protected from being scratched.
[0016] 2) This tool reliably and effectively solves the problems of a fitter machining radial equally divided holes and drilling holes on an ordinary bench drill. Similarly, it can solve the machining problems of radial holes such as eight equal divisions and six equal divisions of a thin-wall pipe body. Using this tool promotes the production progress, ensures the product quality of the thin-wall sleeve machining, and has a simple structure and convenient operation. It is an extremely feasible and usable tool form for a fitter to operate and machine radial equally divided holes.
[0017] 3) As a lightweight and special-shaped guide head shell body, the ratio of the diameter to the wall thickness of the thin-wall sleeve is 50:1 to 60:1. Its radial holes facilitate its connection. The internal positioning ring platform is positioned by the pipe body, and a convex ring is arranged on the butt joint pipe orifice to facilitate its butt joint. The thin-wall sleeve significantly reduces its own weight while ensuring strength. Description of the Drawings
[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0020] Figure 2 is an installation schematic diagram of the present utility model;
[0021] Figure 3It is a schematic structural diagram of the thin-walled sleeve of the present utility model;
[0022] Figure 4 It is a schematic structural diagram of the lower equalizing disk of the present utility model;
[0023] Figure 5 It is a schematic structural diagram of the upper equalizing disk of the present utility model;
[0024] Figure 6 It is a schematic structural diagram of the positioning lifting lug of the present utility model.
[0025] In the figure, 1 - thin-walled sleeve, 101 - large port, 102 - radial hole, 103 - positioning ring platform, 104 - small port, 105 - butt joint pipe orifice, 2 - upper equalizing disk, 201 - upper regular polygon-shaped disk, 202 - upper positioning round platform, 203 - upper through hole, 204 - positioning hole, 3 - lower equalizing disk, 301 - lower regular polygon-shaped disk, 302 - lower positioning round cavity, 303 - lower through hole, 4 - threaded tie rod, 5 - nut, 6 - positioning pin, 7 - positioning lifting lug, 8 - lifting lug hole. Specific embodiments
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0027] The present utility model will be described in detail below with reference to the accompanying drawings.
[0028] Such as Figures 1 to 6As shown in the figure, this positioning tooling for thin-walled sleeves is used to fix the thin-walled sleeve 1. The fixed thin-walled sleeve 1 is a tapered tube with a curved surface. A plurality of radial holes 102 are symmetrically arranged at the large port 101 of the thin-walled sleeve 1. A positioning ring platform 103 is arranged inside the large port 101 of the thin-walled sleeve 1. The small port 104 of the thin-walled sleeve 1 is first turned inwards along the radial direction and then turned outwards along the axial direction to form a butt joint pipe orifice 105. The ratio of the diameter to the wall thickness of the thin-walled sleeve 1 is 50:1 to 60:1. Specifically, as a lightweight and special-shaped guiding head housing, the thin-walled sleeve has a diameter-to-wall thickness ratio of 50:1 to 60:1. Its radial holes facilitate its connection. The internal positioning ring platform is for pipe body positioning. There is a convex ring on the butt joint pipe orifice to facilitate its butt joint. Under the condition of ensuring strength, the thin-walled sleeve significantly reduces its own weight.
[0029] This product is a workpiece in the form of a thin-walled sleeve. There is a large contrast between the diameter and the wall thickness of the workpiece, and the machining strength of the workpiece is poor. In particular, the position accuracy and equidistant accuracy of each hole in the radial direction will have a greater impact on the assembly of the guiding head product. In addition, when machining the holes on the circumference, due to the workpiece being in the form of a thin-walled sleeve and having poor machining strength, it is extremely easy to generate circumferential deformation during machining. It not only causes changes in the inner and outer diameter dimensions of the circumference, but also directly affects the fit between the guiding head body and the outer housing. Secondly, if the equidistant accuracy of the radial holes in the outer housing exceeds the EQS requirement, it will cause displacement of the corresponding screw holes between the outer housing and the body, and the screw holes cannot be screwed in. Therefore, the following special tooling is adopted. This positioning tooling includes an upper equidistant disc 2, a lower equidistant disc 3, a threaded pull rod 4, nuts 5 and a positioning pin 6.
[0030] In the figure, the upper equidistant disc 2 is composed of an upper regular polygon disc 201 and an upper positioning round platform 202. An upper through hole 203 is opened in the middle of the upper equidistant disc 2. Positioning holes 204 are opened on the side surface of the upper positioning round platform 202 corresponding to the positions of the radial holes 102; the lower equidistant disc 3 is composed of a lower regular polygon disc 301 and a lower positioning round cavity 302. A lower through hole 303 is opened in the middle of the lower equidistant disc 3; the threaded pull rod 4 passes through the upper through hole 203, the inside of the thin-walled sleeve 1 and the lower through hole 303 in sequence; two nuts 5 are respectively installed at both ends of the threaded pull rod 4 to fix the thin-walled sleeve 1, the upper equidistant disc 2 and the lower equidistant disc 3 into one body; the positioning pin 6 passes through the radial holes 102 and is installed in the positioning holes 204. Specifically, the positioning holes 204 can also be in the form of positioning grooves.
[0031] It should be noted that this tooling solves the problems of how to clamp and machine the radially equally divided holes of the thin-walled sleeve, i.e., the outer casing, for bench workers. After clamping, due to the supporting effect of the upper equalizing plate and the lower equalizing plate, deformation of the thin-walled sleeve is avoided during machining, and the positions and equalizing precisions of the equally divided holes are effectively maintained. Since the positioning pin acts in the positioning hole, when drilling each counterbore, the coaxiality of the diameter hole and the boring hole is ensured, and due to the supporting effect of the disc body, secondary deformation of the thin-walled sleeve is avoided; when machining each equally divided hole, although the thin-walled sleeve, i.e., the outer casing, is flipped many times, only the tooling is flipped, and the surface of the outer casing is protected from being scratched.
[0032] In addition, the upper regular polygon disc 201 and the lower regular polygon disc 301 are of regular hexagon or regular octagon structures. This tooling reliably and effectively solves the problems of machining radially equally divided holes and boring holes by bench workers on an ordinary bench drill. Similarly, it can solve the machining problems of radially equally divided holes such as octal and hexadecimal of thin-walled pipe bodies. Using this tooling promotes the production progress, ensures the product quality of thin-walled sleeve machining, and has a simple structure and convenient operation. It is an extremely feasible and usable tooling form for bench workers to machine radially equally divided holes.
[0033] The actual drilling operation includes the following steps: Install one end of the thin-walled sleeve workpiece where drilling is required in the wall thickness groove formed by the combination of the upper equalizing plate and the lower equalizing plate. The threaded tie rod sequentially passes through the upper through hole, the inside of the thin-walled sleeve, and the lower through hole, and nuts are screwed onto both ends of the threaded tie rod. Place the overall assembled component on a flat plate, making any equalizing plane of the equalizing plate lie in the same plane and be parallel to the corresponding plane. Tighten the two-way nut to fasten it. After the combination is completed, the equally divided holes on the corresponding plane can be machined under the support of the plane formed by the equalizing plate until all the equally divided holes are machined.
[0034] The actual boring operation includes the following steps: Taking any hole in the radial direction of the outer casing as a reference, insert a positioning pin to ensure that all equalizing planes are consistent. Tighten the two-way M12 nut. Under the support of the plane formed by the equalizing plate, bore the equally divided counterbores on the corresponding plane until all the equally divided holes are bored.
[0035] During actual application, a positioning lifting lug 7 can also be installed on the side of the upper regular polygon disc 201. The positioning lifting lug 7 has a lug hole 8 at the position of the positioning hole 204. When drilling the first hole, the drill bit can directly pass through the position of the lug hole 8 for drilling work, and thus drill through to the position of the positioning hole 204 or the positioning groove.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A thin-walled sleeve positioning tool, characterized in that: Used to fix the thin-walled sleeve (1), comprising an upper dividing plate (2), a lower dividing plate (3), a threaded tie rod (4), a nut (5) and a positioning pin (6), wherein: The thin-walled sleeve (1) is a curved tapered tube, and a plurality of radial holes (102) are symmetrically provided at the large end (101) of the thin-walled sleeve (1); The upper dividing plate (2) is composed of an upper regular polygonal plate (201) and an upper positioning truncated cone (202); an upper through hole (203) is provided in the middle of the upper dividing plate (2); and a positioning hole (204) is provided on the side surface of the upper positioning truncated cone (202) at a position corresponding to the radial hole (102); The lower dividing plate (3) is composed of a lower regular polygonal plate (301) and a lower positioning circular cavity (302), and a lower through hole (303) is provided in the middle of the lower dividing plate (3); The threaded pull rod (4) passes through the upper through hole (203), the interior of the thin-walled sleeve (1), and the lower through hole (303) in sequence; The two nuts (5) are respectively mounted on the two ends of the threaded pull rod (4) to fix the thin-walled sleeve (1), the upper dividing plate (2) and the lower dividing plate (3) into one body; The positioning pin (6) passes through the radial hole (102) and is then installed in the positioning hole (204).
2. The thin-walled sleeve positioning tool as claimed in claim 1, characterized in that: A positioning ring (103) is provided inside the large port (101) of the thin-walled sleeve (1), and the small port (104) of the thin-walled sleeve (1) is firstly radially inwardly flanged and then axially outwardly flanged to form a butt joint (105).
3. The thin-walled sleeve positioning tool as claimed in claim 2, characterized in that: A positioning lug (7) is installed on the side of the upper regular polygonal plate (201), and the positioning lug (7) is provided with a lug hole (8) at the position of the positioning hole (204).
4. The thin-walled sleeve positioning tool as claimed in claim 3, characterized in that: The upper regular polygonal plate (201) and the lower regular polygonal plate (301) are regular hexagonal or regular octagonal structures.
5. The thin-walled sleeve positioning tool as claimed in claim 4, characterized in that: The ratio of the diameter to the wall thickness of the thin-walled sleeve (1) is 50:1 to 60:1.