A fixture clamp for assembling a columnar part

Abstract

The application belongs to the field of columnar part assembly, and particularly relates to a tool clamp for columnar part assembly, which comprises a supporting structure, a clamping structure and a supporting structure; the clamping structure comprises a positioning base arranged on the supporting structure and a linear pressing assembly, the positioning base can stably accommodate and support the columnar part to ensure that the part remains stable during assembly, and the linear pressing assembly is used for applying pressure and clamping and fixing the columnar part in cooperation with the positioning base; the design of the sliding rail ensures that the movement direction of the linear pressing assembly is consistent with the central surface of the positioning base, thereby realizing axial centering clamping and reducing stress concentration caused by eccentric clamping, so that, through axial limiting of the positioning base and the movable supporting piece and in combination with uniform pressure of the linear pressing assembly, the gap problem of the gap frame and the tiger table clamp can be effectively eliminated, the part can be prevented from shaking during assembly, and the clamping stability can be significantly improved.

Description

Technical Field

[0001] This application belongs to the field of columnar parts assembly, and specifically relates to a tooling fixture for assembling columnar parts. Background Technology

[0002] Currently, the application of downhole tools in oil wells has expanded from the traditional oil and gas extraction industry to new energy projects, such as air energy storage and underground brine extraction. Compared to the 60-300mm outer diameter of traditional downhole tools used in oil and gas extraction, the outer diameter of downhole tools used in air energy storage is significantly larger, ranging from 300-500mm. Currently, the assembly of tool parts (bar-shaped or tubular) commonly uses gantry vises or bench vises, which has the following shortcomings:

[0003] Using gantry vises can easily lead to problems such as loose clamping and wobbling left and right or up and down due to the large gaps at the connection points.

[0004] Using a vise for side clamping can also lead to problems such as difficulty in positioning parts, requiring additional shims, loose clamping, and easy damage to the outer surface of parts. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a tooling fixture for assembling cylindrical parts, which can meet the assembly and use of various specifications of oil well downhole tool parts, and is convenient for positioning and clamping, secure for clamping, and does not slip or damage the outer diameter of the parts.

[0006] This application provides a tooling fixture for assembling columnar parts, including:

[0007] Support structure;

[0008] The clamping structure includes a positioning base and a linear clamping assembly disposed on the support structure. The positioning base can stably accommodate and support the columnar part to ensure that the part remains stable during assembly. The linear clamping assembly is used to apply pressure and cooperates with the positioning base to clamp and fix the columnar part.

[0009] The supporting structure includes a bracket disposed on the supporting structure, a slide rail disposed on the bracket and extending along the positioning center surface of the positioning base, and a movable support member slidably disposed on the slide rail, wherein the movable support member cooperates with the positioning base to position the two ends of the columnar part.

[0010] Optionally, the movable support includes a sliding seat disposed on the slide rail and two sets of rollers symmetrically rotatably disposed on the sliding seat, forming a V-shaped area between the two sets of rollers, with each set of rollers having at least one roller.

[0011] Optionally, a limit pin may be detachably provided at the end of the slide rail to limit the sliding distance of the movable support.

[0012] Optionally, the support structure includes a base plate, a column disposed on the base plate, and a support assembly disposed on the column, with the positioning base disposed on the support assembly.

[0013] Optionally, the support assembly includes a lower support disposed on the support column, an upper support disposed on the lower support, and a rope for connecting the lower support and the upper support. The lower support and the upper support are connected by bolts and one side is hinged. The linear clamping assembly is connected to the upper support and / or the positioning base.

[0014] Optionally, the linear clamping assembly includes a stand, a nut sleeve disposed on the top of the stand, a screw threaded to the nut sleeve, and a pressure head disposed at one end of the screw thread and disposed opposite to the positioning base.

[0015] Optionally, the support frame includes a C-shaped column connected to the upper support and / or the positioning base, a positioning sleeve disposed on the top of the C-shaped column, and a nut sleeve disposed inside the positioning sleeve; the C-shaped column has a limiting groove parallel to the screw axis, a positioning plate is slidably disposed in the limiting groove, and one end of the positioning plate is connected to the pressure head.

[0016] Optionally, the pressure head includes a cover plate connected to one end of the screw and a V-shaped pressure plate connected to the cover plate.

[0017] Optionally, the linear clamping assembly further includes a wrench disposed at the other end of the screw.

[0018] Optionally, the positioning base has a V-groove, which fits into a non-marking dental plate.

[0019] The beneficial effects of this application are that the positioning base, through a groove (such as a V-groove or an arc groove) designed to fit the outer diameter of the cylindrical part, can stably accommodate and support the middle or both ends of the cylindrical part, ensuring its stability during assembly and preventing displacement or tilting caused by external forces. The cooperation between the slide rail and the bracket allows the movable support to slide along the center surface of the positioning base, thereby flexibly adjusting the clamping position. The movable support and the positioning base work together to axially limit the two ends of the cylindrical part, preventing it from swaying left and right or up and down. The linear clamping assembly applies pressure along the slide rail direction, working in conjunction with the positioning base to clamp the cylindrical part. The clamping force is evenly distributed, avoiding localized overtightness that could lead to part deformation or surface damage. The design of the slide rail ensures that the movement direction of the linear clamping assembly is consistent with the center surface of the positioning base, thereby achieving axial centering clamping and reducing stress concentration caused by eccentric clamping. Thus, through the axial limiting of the positioning base and the movable support, combined with the uniform pressure of the linear clamping assembly, the gap problem of the gantry vise and bench vise is effectively eliminated, preventing the part from swaying during assembly and significantly improving clamping stability. The supporting structure further provides lateral support to prevent columnar parts from bending or tilting due to gravity or external forces during clamping or assembly, ensuring the stability of their geometry. The movable support moves on the slide rail, which can be adjusted according to the length of the part. Movable support can also be added to the slide rail as needed to form multiple support combinations, facilitating the sliding of parts during assembly. It can realize the assembly and use of columnar parts of various specifications, greatly saving the configuration cost of clamping tools. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of the tooling fixture provided in the embodiments of this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the main structure of the tooling fixture;

[0022] Figure 3 for Figure 1 Diagram showing the usage status of tooling fixtures;

[0023] Figure 4 A three-dimensional structural schematic diagram of another tooling fixture provided in an embodiment of this application;

[0024] Figure 5 for Figure 1 A schematic diagram of the deformed structure of the tooling fixture;

[0025] Figure 6 for Figure 5 Diagram showing the usage status of tooling fixtures.

[0026] In the diagram: 100, columnar part; 101, base plate; 102, support column; 103, lower support; 104, upper support; 105, connecting pin; 106, rope; 201, positioning base; 202, C-shaped column; 203, positioning sleeve; 204, screw; 205, nut sleeve; 206, limiting groove; 207, positioning plate; 208, cover plate; 209, V-shaped pressure plate; 210, wrench; 211, non-marking toothed plate; 301, bracket; 302, slide rail; 303, sliding seat; 304, roller; 305, limiting pin. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] like Figure 1-4 As shown, this application provides a tooling fixture for assembling columnar parts, comprising: a support structure, a clamping structure, and a supporting structure; wherein, the clamping structure includes a positioning base 201 and a linear clamping assembly disposed on the support structure, the positioning base 201 being able to stably accommodate and support the columnar part 100 to ensure that the part remains stable during assembly, and the linear clamping assembly being used to apply pressure and cooperate with the positioning base 201 to clamp and fix the columnar part 100; the supporting structure includes a bracket 301 disposed on the support structure, a slide rail 302 disposed on the bracket 301 and extending along the positioning center surface of the positioning base 201, and a movable support member slidably disposed on the slide rail 302, the movable support member cooperating with the positioning base 201 to position the two ends of the columnar part 100.

[0029] Compared with the prior art, the tooling fixture for assembling cylindrical parts provided in this application has a positioning base 201 that can stably accommodate and support the middle or both ends of the cylindrical part 100 through a groove (such as a V-groove or an arc groove) designed to fit the outer diameter of the cylindrical part 100, ensuring its stability during assembly and preventing displacement or tilting caused by external forces. The cooperation between the slide rail 302 and the bracket 301 allows the movable support to slide along the center surface of the positioning base 201, thereby flexibly adjusting the clamping position. The movable support and the positioning base 201 work together to axially limit the two ends of the cylindrical part 100, preventing it from swaying left and right or up and down. The linear clamping assembly applies pressure along the slide rail 302, working in conjunction with the positioning base 201 to clamp the cylindrical part 100. The clamping force is evenly distributed, avoiding localized overtightness that could cause deformation or surface damage to the part. The design of the slide rail 302 ensures that the movement direction of the linear clamping assembly is consistent with the center plane of the positioning base 201, thereby achieving axial centering clamping and reducing stress concentration caused by eccentric clamping. Through the axial limiting of the positioning base 201 and the movable support, combined with the uniform pressure of the linear clamping assembly, the gap problem of the gantry vise and bench vise is effectively eliminated, preventing parts from shaking during assembly and significantly improving clamping stability. The support structure further provides lateral support to prevent the columnar part 100 from bending or tilting due to gravity or external forces during clamping or assembly, ensuring the stability of its geometry. The movable support moves along the slide rail 302, allowing adjustment according to the length of the part. Multiple movable supports can also be added to the slide rail 302 as needed to form multiple support combinations, facilitating the sliding of parts during assembly. This allows for the assembly and use of various specifications of columnar parts 100, greatly saving on the configuration cost of clamping tools.

[0030] In one possible implementation, the movable support includes a sliding seat 303 mounted on the slide rail 302 and two sets of rollers 304 symmetrically rotated on the sliding seat 303, forming a V-shaped area between the two sets of rollers 304. Each set of rollers 304 contains at least one roller. Specifically, the sliding seat 303 is mounted on the slide rail 302 and slides along the direction of the slide rail 302. Its position can be flexibly adjusted according to the length of the cylindrical part 100, ensuring that the clamp is suitable for parts of different specifications. When the cylindrical part 100 is placed within this V-shaped area, the rollers 304 automatically center the part through self-centering, achieving dual axial and radial positioning functions. Furthermore, the distribution of the two sets of rollers 304 provides more support points for the cylindrical part 100, further enhancing clamping stability.

[0031] In one possible implementation, a limit pin 305 is detachably provided at the end of the slide rail 302 to limit the sliding distance of the movable support. Specifically, the limit pin 305 is detachably installed at the end of the slide rail 302 by means of threads, plugs, or snaps. When the movable support moves on the slide rail 302, it will contact the limit pin 305 when it approaches the set position, thereby preventing it from sliding forward. The limit pin 305 can effectively prevent the movable support from sliding out of the slide rail 302 due to misoperation, vibration, or excessive clamping force, thereby improving the safety and stability of the fixture.

[0032] In some possible implementations, the limiting pin 305 is detachably installed at the end of the slide rail 302 by means of threads, plugs, or snaps, and its position can be flexibly adjusted according to the length of the columnar part 100. Before assembly, the position of the limiting pin 305 is preset according to the length of the columnar part 100, located at both ends or one side of the slide rail 302, limiting the movement boundary of the movable support. When the operator pushes the movable support into place, its sliding seat 303 stops moving after contacting the limiting pin 305, achieving quick and accurate positioning without the need for additional measurement or alignment. Thus, by presetting the assembly position through the limiting pin 305, the operator can directly push the movable support to the limiting point to complete the positioning, saving the time of repeated measurement and manual correction, and significantly improving assembly efficiency.

[0033] In one possible implementation, the support structure includes a base plate 101, a support column 102 mounted on the base plate 101, a support assembly mounted on the support column 102, and a positioning base 201 mounted on the support assembly. Specifically, the base plate 101 provides a stable mounting surface for the entire fixture and is typically fixed to the ground or a workbench to bear the overall weight of the fixture as well as the clamping forces and external forces applied during assembly. The support column 102 vertically connects the base plate 101 to the upper structure, serving to support and transfer loads. The support assembly is mounted on top of the support column 102 to support and fix the positioning base 201. The positioning base 201 is typically designed as a V-groove, arc groove, or semi-circular hole structure to accommodate the middle or end of the columnar part 100, ensuring it is in the correct position before clamping. When used in conjunction with the movable support, it can achieve axial and radial stability of the columnar part 100. Thus, the three-section support structure (base plate 101 + column 102 + support assembly) is reasonably distributed, forming a rigid support system that can effectively resist clamping force and vibration during assembly and ensure the overall stability of the fixture.

[0034] In one possible implementation, such as Figure 5 and Figure 6The support assembly includes a lower support 103 mounted on a support column 102, an upper support 104 mounted on the lower support 103, and a rope 106 connecting the lower support 103 and the upper support 104. The lower support 103 and the upper support 104 are bolted together and hinged on one side. A linear clamping assembly is connected to the upper support 104 and / or the positioning base 201. Specifically, the lower support 103 and the upper support 104 are hinged on one side by a connecting pin 105. In some cases, after the oil well downhole tool is assembled, it is tested vertically to simulate the verticality of the oil well. The technical solution provided by this invention can achieve the above-mentioned objectives. First, remove the fixing screws and nuts that fix the lower and upper bases, and replace them with a rope 106 of suitable length. One end of the rope 106 has a fixing head, and the other end can be fixed with a nut, so that the tool is finally at a 90° vertical position. A movable wooden block is provided on the base plate 101, and the wooden block is placed on the end of the test tool to prevent the tool from loosening.

[0035] In one possible implementation, the linear clamping assembly includes a stand, a nut sleeve 205 disposed on top of the stand, a screw 204 screwed to the nut sleeve 205, and a clamping head disposed at one end of the screw 204 and opposite to the positioning base 201. Specifically, the operator rotates the screw 204 using a handle, wrench 210, or other power device (such as an electric / pneumatic tool), causing it to move linearly within the nut sleeve 205 and driving the clamping head downwards, ultimately forming a clamping space with the positioning base 201 to clamp the cylindrical part 100. Additionally, the stand provides guidance for the screw 204, ensuring its movement is vertical and stable, preventing eccentric forces that could cause part deformation or insecure clamping. By adjusting the screw 204's screw depth, the downward pressure distance and clamping force of the clamping head can be controlled, adapting to cylindrical parts 100 of different diameters and lengths. The linear clamping assembly has a compact overall structure, requiring only the rotation of the screw 204 to complete the clamping action, eliminating the need for a complex control system.

[0036] In one possible implementation, the support frame includes a C-shaped column 202 connected to the upper support 104 and / or the positioning base 201, a positioning sleeve 203 disposed on the top of the C-shaped column 202, and a nut sleeve 205 disposed within the positioning sleeve 203. The C-shaped column 202 has a limiting groove 206 parallel to the axis of the screw 204, and a positioning plate 207 is slidably disposed within the limiting groove 206, one end of which is connected to the pressure head. Specifically, the mating structure between the positioning plate 207 and the limiting groove 206 enhances the guiding rigidity of the pressure head, preventing wobbling or skew during clamping and ensuring precise and stable clamping action. This is particularly suitable for assembling oil well tools with large diameter and high precision requirements (such as parts with an outer diameter of 300-500mm). The C-shaped column 202 design provides excellent load-bearing capacity and resistance to bending and torsion, capable of withstanding significant clamping forces and external impacts. The sliding fit between the positioning plate 207 and the limiting groove 206 further enhances the overall structural stability and reduces clamping loosening caused by vibration. The positioning plate 207 can slide within the limiting groove 206, allowing adjustment of the pressure head position according to the part height, accommodating various sizes and specifications. Each component adopts a modular design, facilitating disassembly, cleaning, and replacement of worn parts (such as the nut sleeve 205, pressure head, etc.), reducing maintenance costs.

[0037] In one possible implementation, the pressure head includes a cover plate 208 connected to one end of the screw 204 and a V-shaped pressure plate 209 connected to the cover plate 208. Specifically, the inner surface of the V-shaped pressure plate 209 has a V-shaped structure, which can naturally conform to the outer circular surface of the columnar part 100 to achieve automatic centering. Compared with flat pressure plates or lateral clamping methods, the V-shaped structure can effectively eliminate the error caused by the eccentric clamping of the part, ensure that the clamping center is consistent with the axis of the part, and improve the assembly accuracy and consistency.

[0038] In one possible implementation, the wire clamping assembly also includes a wrench 210 located at the other end of the screw 204. Thus, the wrench 210 is directly connected to the end of the screw 204, allowing the operator to quickly apply torque and raise or lower the clamping head by rotating the screw 204. Compared to the traditional method of using an adjustable wrench 210 or external tools, the integrated wrench 210 eliminates the need for additional tools, simplifying the operation process and improving clamping efficiency.

[0039] In one possible implementation, the positioning base 201 has a V-groove that fits into the non-marking toothed plate 211. Thus, the V-groove provides excellent self-centering capability, allowing the cylindrical part 100 to be automatically centered, ensuring positional accuracy during assembly or machining. The surface of the non-marking toothed plate 211 typically has a special texture that increases friction without damaging the workpiece surface, further enhancing the fixation of the part within the V-groove and reducing displacement caused by vibration or other external forces.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0041] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A tooling fixture for assembling columnar parts, characterized in that, include: Support structure; The clamping structure includes a positioning base (201) disposed on the support structure and a linear clamping assembly. The positioning base (201) can stably accommodate and support the columnar part (100) to ensure that the part remains stable during assembly. The linear clamping assembly is used to apply pressure and cooperate with the positioning base (201) to clamp and fix the columnar part (100). The supporting structure includes a bracket (301) disposed on the supporting structure, a slide rail (302) disposed on the bracket (301) and extending along the positioning center surface of the positioning base (201), and a movable support member slidably disposed on the slide rail (302). The movable support member cooperates with the positioning base (201) to position the two ends of the columnar part (100).

2. The tooling fixture according to claim 1, characterized in that, The movable support includes a sliding seat (303) disposed on the slide rail (302) and two sets of rollers (304) symmetrically rotatably disposed on the sliding seat (303). A V-shaped area is formed between the two sets of rollers (304), and the number of each set of rollers (304) is at least one.

3. The tooling fixture according to claim 2, characterized in that, The end of the slide rail (302) is detachably provided with a limiting pin (305) to limit the sliding distance of the movable support.

4. The tooling fixture according to claim 3, characterized in that, The support structure includes a base plate (101), a column (102) disposed on the base plate (101), and a support assembly disposed on the column (102), with the positioning base (201) disposed on the support assembly.

5. The tooling fixture according to claim 4, characterized in that, The support assembly includes a lower support (103) disposed on the support column (102), an upper support (104) disposed on the lower support (103), and a rope (106) for connecting the lower support (103) and the upper support (104). The lower support (103) and the upper support (104) are bolted together and hinged on one side. The linear clamping assembly is connected to the upper support (104) and / or the positioning base (201).

6. The tooling fixture according to claim 5, characterized in that, The linear pressing assembly includes a stand, a nut sleeve (205) disposed on the top of the stand, a screw (204) screwed to the nut sleeve (205), and a pressure head disposed at one end of the screw (204) and disposed opposite to the positioning base (201).

7. The tooling fixture according to claim 6, characterized in that, The support frame includes a C-shaped column (202) connected to the upper support (104) and / or the positioning base (201), a positioning sleeve (203) disposed on the top of the C-shaped column (202), and a nut sleeve (205) disposed inside the positioning sleeve (203); the C-shaped column (202) has a limiting groove (206) parallel to the axis of the screw (204), and a positioning plate (207) is slidably disposed in the limiting groove (206), one end of the positioning plate (207) being connected to the pressure head.

8. The tooling fixture according to claim 7, characterized in that, The pressure head includes a cover plate (208) connected to one end of the screw (204) and a V-shaped pressure plate (209) connected to the cover plate (208).

9. The tooling fixture according to claim 8, characterized in that, The linear clamping assembly also includes a wrench (210) disposed at the other end of the screw (204).

10. The tooling fixture according to any one of claims 1-9, characterized in that, The positioning base (201) has a V-groove, and the V-groove is fitted with a non-marking dental plate (211).

Images