Positioning fixture for machining threaded rods

Abstract

This application provides a positioning fixture for threaded rod machining, belonging to the technical field of threaded rod machining equipment. It includes a frame and a pressure plate. The frame supports the threaded rod, ensuring its axial direction and horizontal plane are parallel. The pressure plate is positioned on the upper side of the frame and connected to a drive structure for moving it towards or away from the frame. Both the frame and the pressure plate have inserts. The inserts are rotatably connected to the frame and the pressure plate, and are used to embed into the threaded grooves on the threaded rod, so that both the frame and the pressure plate are connected to the threaded rod through the inserts, thus fixing the position of the threaded rod. The positioning fixture for threaded rod machining provided in this application, through the design of inserts embedding into the threaded grooves, ensures the stability of the threaded rod during machining, avoids axial or radial displacement, and prevents damage to the threaded grooves during clamping, thus improving the appearance quality of the threaded grooves.

Description

Technical Field

[0001] This utility model belongs to the field of threaded rod processing technology, and more specifically, it relates to a positioning fixture for threaded rod processing. Background Technology

[0002] As a core component of mechanical transmission and power systems, the machining accuracy of threaded rods directly affects equipment performance and service life. With the increasing complexity of industrial environments, threaded rods often require secondary machining processes such as keyway milling, drilling, and end-face machining to meet functional integration needs. However, due to the helical external thread grooves typically present on the surface of threaded rods, their unique structure makes them susceptible to radial forces and vibrations during machining. Therefore, protecting the thread integrity while achieving high-precision cutting has become a key issue restricting machining efficiency and yield.

[0003] Currently, secondary machining of threaded rods commonly employs three-jaw chucks, V-blocks, or combination fixtures for clamping. Specifically, the fixture uses hydraulic or mechanically driven jaws to radially clamp the outer edge or threaded surface of the threaded rod as a reference. To improve clamping stability, some fixtures incorporate anti-slip textures or soft pads on the inner walls of the jaws to increase contact friction. For threaded rods of different diameters, fixtures are typically equipped with adjustable modules, allowing for adaptation to workpiece dimensions by changing the jaws or adjusting the clamping range; however, the clamping reference remains primarily the external thread surface.

[0004] The inventors discovered that traditional clamping methods have significant drawbacks. First, the radial clamping force is concentrated in the local contact area of ​​the external thread of the threaded rod. Especially under intermittent cutting conditions such as milling and drilling, the hard contact between the jaws and the thread groove easily leads to stress concentration, causing micro-cracks or plastic deformation at the thread root. Second, during repeated clamping, the frequent friction between the anti-slip texture of the jaws and the thread groove accelerates the wear of the thread surface, and in severe cases, causes the pitch accuracy to exceed tolerances. In addition, some fixtures use high-hardness jaws to enhance clamping force, which actually increases the risk of scratches on the thread surface. These problems not only affect the appearance quality of the threaded rod, but may also lead to transmission failure, increasing rework and scrap costs. Utility Model Content

[0005] The purpose of this application is to provide a positioning fixture for machining threaded rods, so as to solve the technical problem that existing fixtures easily wear down the threads on the threaded rods when clamping them, which leads to a decrease in the appearance quality of the threaded rods and may even cause transmission failure.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A positioning fixture for machining threaded rods is provided, comprising:

[0008] A frame for supporting the threaded rod, such that the axial direction of the threaded rod is parallel to the horizontal plane; and

[0009] A pressure plate is disposed on the upper side of the frame and is connected to a drive structure for moving it toward or away from the frame.

[0010] The frame and the pressure plate are each equipped with inserts; the inserts and the frame, and the inserts and the pressure plate are rotatably connected, and the inserts are used to embed into the threaded grooves on the threaded rod, so that the frame and the pressure plate are connected to the threaded rod through the inserts, and the position of the threaded rod is fixed.

[0011] In one possible implementation, the insert further includes:

[0012] A rotating base is rotatably connected to the corresponding frame or pressure plate, and the rotating base is connected to the insert; the rotating base has an adjustment knob on the side facing away from the insert.

[0013] In one possible implementation, two support seats are arranged side by side on the frame in a horizontal direction; one of the support seats is fixedly connected to the frame, and the other support seat is slidably connected to the frame in a horizontal direction, so that the two support seats are adapted to move towards each other or away from each other;

[0014] Each of the support seats has a V-shaped groove on its upper surface, and the V-shaped groove extends through the adjacent sides of two support seats; the rotating seat is rotatably connected to the inner wall of the V-shaped groove, and the rotation axis is perpendicular to the inner wall of the V-shaped groove.

[0015] In one possible implementation, each of the inner walls of the V-groove has a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the extension direction of the V-groove; the rotating seat is slidably connected to the corresponding strip-shaped hole, and an adjusting mechanism is also provided between the rotating seat and the V-groove; the adjusting mechanism is used to drive the rotating seat to move along the extension direction of the V-groove so that the insert moves to be aligned with the threaded groove.

[0016] In one possible implementation, the adjusting mechanism includes:

[0017] A sliding seat is slidably connected to the V-groove along its extension direction, and the sliding seat is connected to the rotating seat; the sliding seat has a threaded hole extending along the extension direction of the V-groove; and

[0018] An adjusting screw is rotatably connected to the V-groove, and the adjusting screw is threadedly connected to the threaded hole; by rotating the adjusting screw, the sliding seat can drive the rotating seat to move.

[0019] In one possible implementation, the sliding seat has a mounting hole for rotatably connecting to the rotating seat, and a limiting hole communicating with the mounting hole is provided on the side wall of the sliding seat; a limiting bolt is provided in the limiting hole, and the limiting bolt is threadedly connected to the limiting hole.

[0020] In one possible implementation, the pressure plate is connected to the frame via a movable seat, and the pressure plate and the movable seat are slidably connected in the vertical direction; the movable seat is slidably connected to the frame, and the moving direction of the movable seat is parallel to the arrangement direction of the two support seats; the movable seat is driven by a linear drive member so that the pressure plate moves with the movable seat.

[0021] In one possible implementation, the linear drive component includes:

[0022] A threaded seat is disposed at one end of the movable seat facing the frame, and the threaded seat is slidably connected to the frame; and

[0023] An adjusting screw is rotatably connected to the frame, and the axial direction of the adjusting screw is parallel to the arrangement direction of the two support seats; the adjusting screw passes through the threaded seat, and the adjusting screw is threadedly connected to the threaded seat.

[0024] In one possible implementation, the movable seat is located between the two support seats.

[0025] In one possible implementation, the driving structure includes:

[0026] A threaded sleeve is disposed on the movable seat, and the axial direction of the threaded sleeve is parallel to the vertical direction; and

[0027] An adjusting screw is rotatably connected to the pressure plate. The axis of the adjusting screw is parallel to the vertical direction, and the adjusting screw is threadedly connected to the threaded sleeve. By rotating the adjusting screw, the pressure plate can be moved toward or away from the threaded rod.

[0028] In this embodiment, the threaded rod to be processed is placed horizontally on the machine frame, and the machine frame is adjusted to ensure that the axial direction of the threaded rod is parallel to the horizontal plane. According to the diameter and thread parameters of the threaded rod, the position of the machine frame or insert is adjusted so that the insert is initially aligned with the thread groove. The drive structure is activated, which moves the pressure plate downwards and closer to the machine frame. The pressure plate and the insert on the machine frame are simultaneously embedded into the thread groove of the threaded rod. The rotational connection characteristics of the insert are used to adapt to the helix angle of the thread, achieving multi-point contact fixation. During processing, the insert automatically adjusts the contact surface with the thread groove by rotation, reducing rigid friction while maintaining radial and axial constraints on the threaded rod. After processing, the drive structure moves the pressure plate upwards, the insert disengages from the thread groove, and the operator safely removes the threaded rod.

[0029] The positioning fixture for threaded rod processing provided in this application embodiment, compared with the prior art, ensures the stability of the threaded rod during processing by embedding inserts into the threaded groove, avoiding axial or radial displacement, and does not damage the threaded groove of the threaded rod during clamping, thus improving the appearance quality of the threaded groove. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of the positioning fixture for threaded rod processing provided in the embodiments of this application;

[0032] Figure 2 A front view of the positioning fixture for machining threaded rods provided in an embodiment of this application;

[0033] Figure 3 A top view of the positioning fixture for machining threaded rods provided in an embodiment of this application;

[0034] Figure 4 A side view of the positioning fixture for machining threaded rods provided in an embodiment of this application;

[0035] Figure 5 for Figure 1 A magnified structural diagram of region I in the middle;

[0036] Figure 6 This is a three-dimensional structural diagram of the sliding seat used in the embodiments of this application;

[0037] Figure 7 This is a three-dimensional structural diagram of the insert used in the embodiments of this application;

[0038] The following are the labeling elements in the figure:

[0039] 1. Frame; 11. Support base; 12. Strip hole; 2. Pressure plate; 3. Insert; 31. Rotating seat; 32. Adjusting knob; 4. Drive structure; 41. Threaded sleeve; 42. Adjusting screw; 5. Adjustment mechanism; 51. Sliding seat; 511. Mounting hole; 512. Limiting hole; 513. Limiting bolt; 52. Adjustment screw; 6. Moving seat; 71. Threaded seat; 72. Adjusting screw; 8. Threaded rod. Detailed Implementation

[0040] 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.

[0041] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] Please refer to the following: Figures 1 to 7 The positioning fixture for threaded rod processing provided in this application will now be described. The positioning fixture for threaded rod processing includes a frame 1 and a pressure plate 2.

[0045] The frame 1 is used to support the threaded rod 8 so that the axial direction of the threaded rod 8 is parallel to the horizontal plane; the frame 1 provides horizontal support for the threaded rod 8 to ensure that its axial direction is parallel to the horizontal plane, and provides a reference for subsequent processing.

[0046] The pressure plate 2 is located on the upper side of the frame 1 and is connected to a drive structure 4 for moving it toward or away from the frame 1; the drive structure 4 drives the pressure plate 2 to move toward the frame 1, so that the inserts 3 on the frame 1 and the pressure plate 2 are embedded in the threaded groove of the threaded rod 8.

[0047] Both the frame 1 and the pressure plate 2 have inserts 3; the inserts 3 and the frame 1, and the inserts 3 and the pressure plate 2 are rotatably connected, and the inserts 3 are used to embed into the threaded grooves on the threaded rod 8, so that the frame 1 and the pressure plate 2 are connected to the threaded rod 8 through the inserts 3, and the position of the threaded rod 8 is fixed; since the inserts 3 are rotatably connected to the frame 1 and the pressure plate 2, they can better adapt to the shape of the threaded groove, thereby firmly fixing the threaded rod 8 on the frame 1 and preventing it from shifting or rotating during processing.

[0048] By setting up a frame 1 to support the threaded rod 8, making the axial direction of the threaded rod 8 parallel to the horizontal plane, and setting up a pressure plate 2 and a drive structure 4, and both the frame 1 and the pressure plate 2 have rotatably connected inserts 3 for embedding into the thread groove of the threaded rod 8, the above structure can make the frame 1, the pressure plate 2 and the threaded rod 8 form a stable fit, achieving the purpose of precise positioning and firm fixation of the threaded rod 8, thereby improving the processing accuracy and stability of the threaded rod 8, and solving the technical problems of poor processing quality caused by inaccurate positioning and insecure fixation of traditional fixtures.

[0049] In this embodiment, the threaded rod 8 to be processed is placed horizontally on the frame 1, and the frame 1 is adjusted to ensure that the axial direction of the threaded rod 8 is parallel to the horizontal plane. According to the diameter and thread parameters of the threaded rod 8, the position of the frame 1 or the insert 3 is adjusted so that the insert 3 is initially aligned with the thread groove. The drive structure 4 is activated, which drives the pressure plate 2 to move downward and closer to the frame 1. The pressure plate 2 and the insert 3 on the frame 1 are synchronously embedded into the thread groove of the threaded rod 8. The rotational connection characteristics of the insert 3 are used to adapt to the helix angle of the thread, so as to achieve multi-point contact fixation. During processing, the insert 3 automatically adjusts the contact surface with the thread groove by rotation to reduce rigid friction, while maintaining radial and axial constraints on the threaded rod 8. After processing, the drive structure 4 drives the pressure plate 2 to move upward, the insert 3 disengages from the thread groove, and the operator safely removes the threaded rod 8.

[0050] The positioning fixture for threaded rod processing provided in this application embodiment, compared with the prior art, ensures that the threaded rod 8 remains stable during processing by embedding the insert 3 into the thread groove, avoiding axial or radial displacement, and will not damage the thread groove of the threaded rod 8 during clamping, thereby improving the appearance quality of the thread groove.

[0051] In some embodiments, the insert 3 described above may be as follows: Figures 1 to 5 and Figure 7 The structure shown is described in the following document. Figures 1 to 5 and Figure 7 The insert 3 also includes a rotating seat 31.

[0052] The rotating base 31 is rotatably connected to the corresponding frame 1 or pressure plate 2, and is connected to the insert 3. An adjustment knob 32 is located on the side of the rotating base 31 facing away from the insert 3. The rotatable connection between the rotating base 31 and the frame 1 or pressure plate 2 provides a rotatable base for the insert 3. The operator rotates the adjustment knob 32 to rotate the rotating base 31, thereby adjusting the angle of the insert 3 so that it can accurately embed into the threaded groove of the threaded rod 8, ensuring accurate positioning.

[0053] By setting a rotating seat 31 rotatably connected to the corresponding frame 1 or pressure plate 2, and the rotating seat 31 being connected to the insert 3 and having an adjustment knob 32 on the side facing away from the insert 3, the above structure allows the operator to flexibly adjust the angle of the insert 3 by adjusting the knob 32, thereby achieving the purpose of better matching the insert 3 with the thread groove, thus achieving the technical effect of improving the success rate and positioning accuracy of insert 3 embedding, and solving the technical problem of difficulty in embedding the insert 3 and the thread groove due to angle deviation.

[0054] In some embodiments, the rack 1 described above may be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 Two support seats 11 are arranged side by side along the horizontal direction on the frame 1; one support seat 11 is fixedly connected to the frame 1, and the other support seat 11 is slidably connected to the frame 1 along the horizontal direction, so that the two support seats 11 are suitable for moving towards each other or away from each other.

[0055] Each support 11 has a V-shaped groove on its upper surface, which extends through the adjacent sides of two support 11s. The rotating seat 31 is rotatably connected to the inner wall of the V-shaped groove, and the rotation axis is perpendicular to the inner wall of the V-shaped groove.

[0056] The fixed support 11 provides a stable support point, and the sliding support 11 can move in the horizontal direction. By moving the two support 11 in opposite directions, the distance between them can be adjusted to accommodate threaded rods 8 of different lengths. The V-groove design can automatically center the threaded rod 8. The rotating seat 31 rotates on the inner wall of the V-groove, which facilitates better engagement of the insert 3 with the threaded groove.

[0057] By setting two support seats 11 arranged side by side in the horizontal direction on the frame 1, one fixed and one sliding, and opening a V-shaped groove on the upper end face of the support seat 11, and rotating seat 31 rotatably connected to the inner wall of the V-shaped groove, the above structure allows the two support seats 11 to be flexibly adjusted according to the length and diameter of the threaded rod 8, thereby achieving the purpose of effectively supporting and positioning threaded rods 8 of different specifications, thus achieving the technical effect of expanding the application range of the fixture, and solving the technical problem that traditional fixtures can only be applied to a single specification of threaded rod 8.

[0058] In some embodiments, the V-groove described above can be as follows: Figures 1 to 4The structure shown is described in the following document. Figures 1 to 4 The inner wall of the V-groove has a strip hole 12, and the length direction of the strip hole 12 is parallel to the extension direction of the V-groove. The rotating seat 31 is slidably connected in the corresponding strip hole 12, and there is also an adjustment mechanism 5 between the rotating seat 31 and the V-groove. The adjustment mechanism 5 is used to drive the rotating seat 31 to move along the extension direction of the V-groove so that the insert 3 moves to be aligned with the threaded groove.

[0059] The slotted hole 12 provides a track for the sliding of the rotating seat 31, and the adjusting mechanism 5 can drive the rotating seat 31 to move within the slotted hole 12. By operating the adjusting mechanism 5, the position of the rotating seat 31 can be precisely controlled, so that the insert 3 is accurately aligned with the thread groove of the threaded rod 8, which provides a guarantee for subsequent fixing and processing.

[0060] By setting a strip hole 12 on the inner wall of the V-groove, the rotating seat 31 is slidably connected in the strip hole 12 and equipped with an adjustment mechanism 5. The above structure enables the rotating seat 31 to move precisely along the extension direction of the V-groove, thereby achieving the purpose of precise alignment between the insert 3 and the threaded groove, thus achieving the technical effect of improving positioning accuracy and solving the technical problem of difficulty in aligning the insert 3 and the threaded groove.

[0061] In some embodiments, the above-described adjusting mechanism 5 may employ, for example, Figure 1 , Figure 2 and Figure 4 The structure shown is described in the following document. Figure 1 , Figure 2 and Figure 4 The adjusting mechanism 5 includes a sliding seat 51 and an adjusting screw 52.

[0062] The sliding seat 51 is slidably connected to the V-groove along the extension direction of the V-groove, and the sliding seat 51 is connected to the rotating seat 31; the sliding seat 51 has a threaded hole that extends along the extension direction of the V-groove.

[0063] The adjusting screw 52 is rotatably connected to the V-groove and is threadedly connected to the threaded hole; by rotating the adjusting screw 52, ​​the sliding seat 51 can drive the rotating seat 31 to move.

[0064] When the adjusting screw 52 is rotated, since the adjusting screw 52 is threadedly connected to the threaded hole on the sliding seat 51, according to the principle of thread transmission, the rotation of the adjusting screw 52 is converted into linear movement of the sliding seat 51 along the extension direction of the V-groove. The sliding seat 51 is connected to the rotating seat 31, thereby driving the rotating seat 31 to move and achieving precise adjustment of the position of the rotating seat 31.

[0065] By setting the adjusting mechanism 5, which includes a sliding seat 51 and an adjusting screw 52, ​​the sliding seat 51 is connected to the rotating seat 31 and has a threaded hole. The adjusting screw 52 is threadedly connected to the threaded hole. The above structure can accurately control the sliding seat 51 to drive the rotating seat 31 to move by rotating the adjusting screw 52, ​​thereby achieving the purpose of accurately adjusting the position of the rotating seat 31, thus improving the technical effect of adjusting the distance accuracy and solving the technical problem of inaccurate adjustment of the position of the rotating seat 31.

[0066] In some embodiments, the aforementioned sliding seat 51 may employ, as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The sliding seat 51 has a mounting hole 511 for rotating connection of the rotating seat 31, and a limiting hole 512 communicating with the mounting hole 511 is provided on the side wall of the sliding seat 51; a limiting bolt 513 is provided in the limiting hole 512, and the limiting bolt 513 is threadedly connected to the limiting hole 512.

[0067] The rotating seat 31 rotates within the mounting hole 511. After being adjusted to the appropriate position, the operator tightens the limiting bolt 513. The limiting bolt 513 is threadedly connected to the limiting hole 512. As the limiting bolt 513 is tightened, its end presses against the rotating seat 31, thereby fixing the rotating seat 31 onto the sliding seat 51 and preventing it from shaking during processing.

[0068] By providing mounting holes 511 on the sliding seat 51 for the rotating seat 31 to rotate, and by providing limiting holes 512 and limiting bolts 513 on the side wall, the above structure can lock the rotating seat 31 after it is adjusted to a suitable position, thereby preventing the rotating seat 31 from shaking during the processing and thus improving the technical effect of processing stability. This solves the technical problem of the rotating seat 31 easily shaking during the processing, leading to inaccurate positioning.

[0069] In some embodiments, the pressure plate 2 may be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The pressure plate 2 is connected to the frame 1 via a movable seat 6, and the pressure plate 2 and the movable seat 6 are slidably connected in the vertical direction; the movable seat 6 is slidably connected to the frame 1, and the moving direction of the movable seat 6 is parallel to the arrangement direction of the two support seats 11; the movable seat 6 is connected to a linear drive component so that the pressure plate 2 moves with the movable seat 6.

[0070] The linear drive component moves the movable seat 6 in a direction parallel to the arrangement direction of the two support seats 11, thereby adjusting the horizontal position of the pressure plate 2. The pressure plate 2 and the movable seat 6 are slidably connected in the vertical direction. The drive structure 4 can move the pressure plate 2 in the vertical direction to achieve the pressing or releasing operation of the threaded rod 8.

[0071] By setting the pressure plate 2 to be connected to the frame 1 via the movable seat 6, the pressure plate 2 and the movable seat 6 are slidably connected up and down, and the movable seat 6 is slidably connected to the frame 1 and is connected to the linear drive component for transmission, the above structure enables the pressure plate 2 to move flexibly in the horizontal and vertical directions, thereby achieving the purpose of the pressure plate 2 to accurately press the threaded rod 8 at different positions, thus achieving the technical effect of improving the versatility of the fixture and the pressing efficiency, and solving the technical problem of inconvenient adjustment of the pressing position of the pressure plate 2.

[0072] In some embodiments, the linear drive component described above may employ, for example... Figure 3 and Figure 4 The structure shown is described in the following document. Figure 3 and Figure 4 The linear drive component includes a threaded seat 71 and an adjusting screw 72.

[0073] The threaded seat 71 is located at the end of the movable seat 6 facing the frame 1, and the threaded seat 71 is slidably connected to the frame 1.

[0074] The adjusting screw 72 is rotatably connected to the frame 1, and the two support seats 11 of the adjusting screw 72 are arranged in parallel directions along their axial direction; the adjusting screw 72 is inserted into the threaded seat 71, and the adjusting screw 72 is threadedly connected to the threaded seat 71.

[0075] When the adjusting screw 72 is rotated, since the adjusting screw 72 is threadedly connected to the threaded seat 71, according to the principle of thread transmission, the rotation of the adjusting screw 72 will be converted into the linear movement of the threaded seat 71 along the frame 1. The threaded seat 71 is connected to the movable seat 6, thereby driving the movable seat 6 to move, realizing the precise adjustment of the position of the movable seat 6.

[0076] By setting a linear drive component including a threaded seat 71 and an adjusting screw 72, the threaded seat 71 is slidably connected to the frame 1 on the movable seat 6, and the adjusting screw 72 is threadedly connected to the threaded seat 71. The above structure can precisely control the movement of the movable seat 6 by rotating the adjusting screw 72, thereby achieving the purpose of accurately adjusting the position of the movable seat 6, thus achieving the technical effect of improving the horizontal position adjustment accuracy of the pressure plate 2 and solving the technical problem of inaccurate position adjustment of the movable seat 6.

[0077] In some embodiments, the movable seat 6 described above may be as follows: Figure 3 and Figure 4 The structure shown is described in the following document. Figure 3 and Figure 4 The movable seat 6 is located between the two support seats 11.

[0078] The movable seat 6 is located between the two support seats 11, allowing the pressure plate 2 to apply pressure from the middle position when clamping the threaded rod 8, making the force on the threaded rod 8 more uniform. This avoids the threaded rod 8 tilting or shaking during processing due to uneven force distribution, ensuring processing stability and quality.

[0079] By setting the movable seat 6 between the two support seats 11, the above structure enables the force distribution of the pressure plate 2 to be more uniform when pressing the threaded rod 8, thus achieving the purpose of more stable pressing of the threaded rod 8, thereby improving the technical effect of improving processing stability and quality, and solving the technical problem of the threaded rod 8 being unstable due to uneven force distribution when the pressure plate 2 is pressing.

[0080] In some embodiments, the driving structure 4 described above can be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The drive structure 4 includes a threaded sleeve 41 and an adjusting screw 42.

[0081] The threaded sleeve 41 is mounted on the movable seat 6, and the axial direction of the threaded sleeve 41 is parallel to the vertical direction.

[0082] The adjusting screw 42 is rotatably connected to the pressure plate 2. The axis of the adjusting screw 42 is parallel to the vertical direction, and the adjusting screw 42 is threadedly connected to the threaded sleeve 41. By rotating the adjusting screw 42, the pressure plate 2 can be moved toward or away from the threaded rod 8.

[0083] When the adjusting screw 42 is rotated, since the adjusting screw 42 is threadedly connected to the threaded sleeve 41, according to the principle of thread transmission, the rotation of the adjusting screw 42 is converted into the linear movement of the pressure plate 2 in the up-down direction. By controlling the number of rotations and direction of the adjusting screw 42, the moving distance and speed of the pressure plate 2 can be precisely controlled, thereby achieving precise control of the clamping force of the pressure plate 2.

[0084] By setting the drive structure 4, which includes a threaded sleeve 41 and an adjusting screw 42, the threaded sleeve 41 is set on the movable seat 6, and the adjusting screw 42 is rotatably connected to the pressure plate 2 and threadedly connected to the threaded sleeve 41. The above structure can precisely control the movement of the pressure plate 2 toward or away from the threaded rod 8 by rotating the adjusting screw 42, thereby achieving the purpose of precise control of the clamping force of the pressure plate 2, thus achieving the technical effect of improving the clamping effect and processing accuracy, and solving the technical problem of inaccurate control of the clamping force of the pressure plate 2.

[0085] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A positioning fixture for machining threaded rods, characterized in that, include: A frame for supporting the threaded rod so that the axial direction of the threaded rod is parallel to the horizontal plane; as well as A pressure plate is disposed on the upper side of the frame and is connected to a drive structure for moving it toward or away from the frame. The frame and the pressure plate are each equipped with inserts; the inserts and the frame, and the inserts and the pressure plate are rotatably connected, and the inserts are used to embed into the threaded grooves on the threaded rod, so that the frame and the pressure plate are connected to the threaded rod through the inserts, and the position of the threaded rod is fixed.

2. The positioning fixture for threaded rod machining as described in claim 1, characterized in that, The insert further includes: A rotating base is rotatably connected to the corresponding frame or pressure plate, and the rotating base is connected to the insert; the rotating base has an adjustment knob on the side facing away from the insert.

3. The positioning fixture for threaded rod machining as described in claim 2, characterized in that, Two support seats are arranged side by side along the horizontal direction on the frame; one of the support seats is fixedly connected to the frame, and the other support seat is slidably connected to the frame along the horizontal direction, so that the two support seats are suitable for moving towards each other or away from each other; Each of the support seats has a V-shaped groove on its upper surface, and the V-shaped groove extends through the adjacent sides of two support seats; the rotating seat is rotatably connected to the inner wall of the V-shaped groove, and the rotation axis is perpendicular to the inner wall of the V-shaped groove.

4. The positioning fixture for threaded rod machining as described in claim 3, characterized in that, The inner wall of each V-groove has a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the extension direction of the V-groove; the rotating seat is slidably connected to the corresponding strip-shaped hole, and there is also an adjustment mechanism between the rotating seat and the V-groove; the adjustment mechanism is used to drive the rotating seat to move along the extension direction of the V-groove so that the insert moves to be aligned with the threaded groove.

5. The positioning fixture for threaded rod machining as described in claim 4, characterized in that, The adjusting mechanism includes: A sliding seat is slidably connected to the V-groove along its extension direction, and the sliding seat is connected to the rotating seat; the sliding seat has a threaded hole extending along the extension direction of the V-groove; and An adjusting screw is rotatably connected to the V-groove, and the adjusting screw is threadedly connected to the threaded hole; by rotating the adjusting screw, the sliding seat can drive the rotating seat to move.

6. The positioning fixture for machining threaded rods as described in claim 5, characterized in that, The sliding seat has a mounting hole for rotatably connecting to the rotating seat, and a limiting hole communicating with the mounting hole is provided on the side wall of the sliding seat; a limiting bolt is provided in the limiting hole, and the limiting bolt is threadedly connected to the limiting hole.

7. The positioning fixture for threaded rod machining as described in claim 3, characterized in that, The pressure plate is connected to the frame via a movable seat, and the pressure plate and the movable seat are slidably connected in the vertical direction; the movable seat is slidably connected to the frame, and the moving direction of the movable seat is parallel to the arrangement direction of the two support seats; the movable seat is driven by a linear drive component so that the pressure plate moves with the movable seat.

8. The positioning fixture for machining threaded rods as described in claim 7, characterized in that, The linear drive component includes: A threaded seat is disposed at one end of the movable seat facing the frame, and the threaded seat is slidably connected to the frame; and An adjusting screw is rotatably connected to the frame, and the axial direction of the adjusting screw is parallel to the arrangement direction of the two support seats; the adjusting screw passes through the threaded seat, and the adjusting screw is threadedly connected to the threaded seat.

9. The positioning fixture for machining threaded rods as described in claim 7, characterized in that, The movable seat is located between the two support seats.

10. The positioning fixture for machining threaded rods as described in claim 7, characterized in that, The driving structure includes: A threaded sleeve is disposed on the movable seat, and the axial direction of the threaded sleeve is parallel to the vertical direction; and An adjusting screw is rotatably connected to the pressure plate. The axis of the adjusting screw is parallel to the vertical direction, and the adjusting screw is threadedly connected to the threaded sleeve. By rotating the adjusting screw, the pressure plate can be moved toward or away from the threaded rod.

Images