A processing fixture for a perforating machine guide plate

Abstract

The utility model discloses a perforating machine guide plate processing fixture, including the bottom plate, both ends of bottom plate bottom all are connected with the sliding frame of sliding, the both sides of sliding frame top all are connected with the slide iron of sliding, all are provided with the distance adjusting component between bottom plate and sliding frame and between slide iron and sliding frame, one side of slide iron bottom is provided with the compression assembly, the compression assembly includes the connecting rod, one end of connecting rod and slide iron bottom one side are fixed, the other end of connecting rod is connected with the pressing plate of sliding, the pressing plate one end and connecting rod articulate, the other end of pressing plate inboard is fixed with the antiskid pad, the inside of pressing plate is provided with the limit slot, the top fixed of slide iron is located the hinged portion of connecting rod has the compression bolt, and the compression bolt screw end penetrates the limit slot and has the compression nut of tail end threaded connection, adopts two -stage distance adjusting component (the independent adjustment of slide iron and slide frame), realizes the accurate positioning of guide plate rough length and width direction, eliminates the error of traditional general fixture artificial alignment.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, specifically relating to a drilling machine guide plate machining fixture. Background Technology

[0002] In the hot rolling process of seamless steel pipes, the piercing mill is the core forming equipment, and its guide plate, as a key thermal tool, plays a crucial role in guiding the high-temperature billet and constraining lateral deformation. The dimensional accuracy and form and position tolerances of the guide plate directly affect the stability of the piercing process and the wall thickness uniformity and surface quality of the final steel pipe. Currently, guide plates are generally made of high-alloy heat-resistant steel cast into blanks, and then the assembly surface is finished by milling.

[0003] Because the sides of the guide plate are all irregular curved surfaces, there are strict relative position requirements between the assembly surfaces. Traditional machining often uses a general-purpose fixture (a combination of flat-jaw vises and locking structure) combined with manual alignment to fix the workpiece. However, this method lacks a stable reference surface due to the irregular surface of the guide plate, requiring repeated adjustments during clamping, making it difficult to ensure the precise correspondence between the machining surface and the milling machine coordinate system; moreover, the curved surface contact leads to uneven force distribution, and cutting vibration can easily cause workpiece displacement, affecting dimensional consistency. To address the above problems, this utility model proposes a guide plate machining fixture for a drilling machine. By optimizing the positioning and clamping mechanism, it achieves rapid and accurate workpiece clamping, improves machining accuracy and work efficiency, and provides process assurance for high-precision machining. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a perforating machine guide plate processing fixture, comprising a base plate, with sliding frames slidably connected to both ends of the bottom of the base plate, and pads slidably connected to both sides of the top of the sliding frames. Adjustment components are provided between the base plate and the sliding frames, and between the pads and the sliding frames. A clamping component is provided on one side of the bottom of the pad, the clamping component comprising a connecting rod, one end of the connecting rod being fixed to one side of the bottom of the pad, and the other end of the connecting rod being slidably connected to a pressure plate. One end of the pressure plate is hinged to the connecting rod, and an anti-slip pad is fixed to the inner side of the other end of the pressure plate. A limiting groove is formed inside the pressure plate. A clamping bolt is fixed to the top of the pad at the hinge point of the connecting rod, the threaded end of the clamping bolt passing through the limiting groove and the tail end being threadedly connected to a clamping nut.

[0005] As a preferred embodiment of this utility model, the pad and the clamping assembly are symmetrically arranged on the top end face of the base plate.

[0006] As a preferred embodiment of the present invention, the pad includes a supporting bottom, and a fitting top is integrally connected to the top of the supporting bottom. The width of the pad gradually decreases from the supporting bottom to the fitting top.

[0007] As a preferred technical solution of this utility model, the pitch adjustment assembly includes two sets of pitch adjustment screws. The threaded sections of the two sets of pitch adjustment screws are respectively threaded to the end of the base plate and the end of the slide frame. The tail ends of the two sets of pitch adjustment screws are respectively rotatably connected to the side of the slide frame and the bottom of the pad. A handwheel is fixed at the head end of each set of pitch adjustment screws.

[0008] As a preferred technical solution of this utility model, milling machine fixing holes are provided at the four corners of the base plate.

[0009] In a preferred embodiment of this utility model, the base plate, pad, pressure plate, and connecting rod are all made of alloy material.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) This utility model adopts a two-stage adjustable component (independent adjustment of the sliding frame and the pad) to achieve precise positioning of the guide plate blank in the length and width directions, eliminate the error of manual alignment of traditional general-purpose fixtures, and significantly improve the clamping repeatability positioning accuracy; the clamping component of the connecting rod and pressure plate combination utilizes the lever force amplification principle to generate sufficient clamping force to effectively resist the workpiece displacement caused by cutting vibration; the limiting groove constrains the displacement of the pressure plate to avoid overpressure causing deformation of the guide plate blank, ensures that the clamping force is evenly distributed on the side of the workpiece, and improves the machining accuracy.

[0012] (2) The top arc surface of the pad fits against the working surface of the guide plate blank, providing a stable support reference and solving the problem of guide plate positioning; the handwheel operation mode of the dual-stage adjustment component greatly shortens the clamping and adjustment time and significantly improves the work efficiency; the symmetrical structure design and standardized adjustment support the rapid change processing of similar guide plate blanks and reduce equipment standby time. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the guide plate blank of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] In the diagram: 1. Base plate; 2. Shim; 3. Connecting rod; 4. Pressure plate; 5. Anti-slip pad; 6. Limiting groove; 7. Tightening bolt; 8. Tightening nut; 9. Support bottom; 10. Fitting top; 11. Adjusting screw; 12. Handwheel; 13. Milling machine fixing hole; 14. Slide frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example

[0019] Please see Figure 1-2 The present invention provides the following technical solution: a perforating machine guide plate processing fixture, including a base plate 1, with sliding frames 14 slidably connected to both ends of the bottom of the base plate 1, and pads 2 slidably connected to both sides of the top of the sliding frames 14. Adjustment components are provided between the base plate 1 and the sliding frames 14, and between the pads 2 and the sliding frames 14. A clamping component is provided on one side of the bottom of the pads 2. The clamping component includes a connecting rod 3. One end of the connecting rod 3 is fixed to one side of the bottom of the pads 2, and the other end of the connecting rod 3 is slidably connected to a pressure plate 4. One end of the pressure plate 4 is hinged to the connecting rod 3, and an anti-slip pad 5 is fixed to the inner side of the other end of the pressure plate 4. A limit groove 6 is opened inside the pressure plate 4. A clamping bolt 7 is fixed to the top of the pads 2 at the hinge of the connecting rod 3. The threaded end of the clamping bolt 7 passes through the limit groove 6 and the tail end is threadedly connected to a clamping nut 8.

[0020] In order to ensure that the workpiece is subjected to uniform force on both sides during clamping and to improve positioning stability and machining accuracy, in this embodiment, as a preferred technical solution of the present invention, the pad 2 and the clamping assembly are symmetrically arranged on the top end face of the base plate 1.

[0021] In order to enhance the support stability of the pad 2 on the guide plate blank and adapt to its irregular structure, in this embodiment, as a preferred technical solution of the present invention, the pad 2 includes a supporting bottom 9, and a fitting top 10 is integrally connected to the top of the supporting bottom 9. The width of the pad 2 gradually decreases from the supporting bottom 9 to the fitting top 10.

[0022] In order to achieve precise and convenient adjustment of the distance between the sliding frame 14 and the pad 2, and to meet the clamping and adaptation requirements of guide plate blanks of different sizes, in this embodiment, as a preferred technical solution of the present invention, the distance adjustment assembly includes two sets of distance adjustment screws 11. The threaded sections of the two sets of distance adjustment screws 11 are respectively threaded to the end of the base plate 1 and the end of the sliding frame 14. The tail ends of the two sets of distance adjustment screws 11 are respectively rotatably connected to the side of the sliding frame 14 and the bottom of the pad 2. A handwheel 12 is fixed at the head end of each set of distance adjustment screws 11.

[0023] In order to achieve a rigid connection between the fixture and the milling machine table and ensure the stability of the overall structure during the machining process, in this embodiment, as a preferred technical solution of the present invention, milling machine fixing holes 13 are provided at the four corners of the base plate 1.

[0024] In order to improve the overall strength and service life of the fixture and adapt to the mechanical performance requirements of the processing environment, in this embodiment, as a preferred technical solution of the present invention, the base plate 1, the pad 2, the pressure plate 4 and the connecting rod 3 are all made of alloy material.

[0025] In summary, based on the above-described technical solution of this utility model, the clamping and adjustment process is as follows:

[0026] Adjustment of the spacing between the sliding frames 14: By rotating the adjusting screws 11 at both ends of the base plate 1 (driven by the handwheel 12 at the first end), the sliding frames 14 slide laterally along the base plate 1, so as to match the spacing between the two sliding frames 14 with the length of the guide plate blank; the tail end of the adjusting screw 11 is rotatably connected to the side of the sliding frame 14, and the threaded section is threadedly engaged with the base plate 1 to form a screw and nut transmission pair.

[0027] Adjusting the position of the pad 2: Operate the adjusting screws 11 at both ends of the slide frame 14 to drive the pad 2 to slide laterally along the slide frame 14, and adjust the distance between the two pads 2 on the same slide frame 14 to match the width of the guide plate blank; the tail end of the adjusting screw 11 is rotatably connected to the bottom of the pad 2, and the threaded section is threadedly engaged with the slide frame 14.

[0028] Locking the clamping assembly: Place the guide plate blank on top of the symmetrically arranged pads 2 (the arc-shaped surface of the top 10 is in contact with the arc-shaped working surface of the guide plate blank), rotate and move the pressure plate 4 around the sliding connection point, causing the rubber anti-slip pad 5 to adhere to the side of the guide plate blank; tighten the clamping nut 8 by passing the clamping bolt 7 (fixed to the top of the pad 2) through the limiting groove 6 of the pressure plate 4, and use its force-increasing effect to clamp the guide plate blank; the limiting groove 6 provides guidance for the rotation of the pressure plate 4 and limits its displacement range.

[0029] Machining status maintenance: The base plate 1 is rigidly connected to the milling machine worktable by bolts through the milling machine fixing holes 13 at the four corners, ensuring the overall stability of the fixture during machining; the symmetrically arranged pads 2 and clamping components form a four-point support and clamping structure, which adapts to the irregular shape of the guide plate blank side, so that the cutting force is evenly distributed to each support point and the machining vibration is suppressed.

[0030] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A perforating machine guide plate processing fixture, comprising a base plate (1), characterized in that: The bottom of the base plate (1) is slidably connected to both ends of the bottom of the base plate (1), and the top of the base plate (14) is slidably connected to both sides of the top of the base plate (14). Adjustment components are provided between the base plate (1) and the base plate (14) and between the base plate (2) and the base plate (14). A pressing component is provided on one side of the bottom of the base plate (2). The pressing component includes a connecting rod (3). One end of the connecting rod (3) is fixedly connected to one side of the bottom of the base plate (2). The other end of the connecting rod (3) is slidably connected to a pressure plate (4). One end of the pressure plate (4) is hinged to the connecting rod (3). An anti-slip pad (5) is fixed on the inner side of the other end of the pressure plate (4). A limit groove (6) is opened inside the pressure plate (4). A pressing bolt (7) is fixed on the top of the base plate (2) at the hinge of the connecting rod (3). The threaded end of the pressing bolt (7) passes through the limit groove (6) and the tail end is threadedly connected to a pressing nut (8).

2. The perforation machine guide plate processing fixture according to claim 1, characterized in that: The pad (2) and the clamping assembly are symmetrically arranged on the top end face of the base plate (1).

3. The perforation machine guide plate processing fixture according to claim 1, characterized in that: The pad (2) includes a supporting bottom (9), and the top of the supporting bottom (9) is integrally connected to a fitting top (10). The width of the pad (2) gradually decreases from the supporting bottom (9) to the fitting top (10).

4. The perforation machine guide plate processing fixture according to claim 1, characterized in that: The pitch adjustment assembly includes two sets of pitch adjustment screws (11). The threaded sections of the two sets of pitch adjustment screws (11) are threadedly connected to the end of the base plate (1) and the end of the slide frame (14), respectively. The tail ends of the two sets of pitch adjustment screws (11) are rotatably connected to the side of the slide frame (14) and the bottom of the pad (2), respectively. A handwheel (12) is fixed at the head end of each set of pitch adjustment screws (11).

5. A perforating machine guide plate processing fixture according to claim 1, characterized in that: The base plate (1) has milling machine fixing holes (13) at all four corners.

6. A perforating machine guide plate processing fixture according to claim 1, characterized in that: The base plate (1), pad (2), pressure plate (4) and connecting rod (3) are all made of alloy material.

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