A three-tube bushing inner diameter reaming tool

Abstract

The utility model discloses a kind of inner diameter reaming tool for three pipe bushing, it is related to bushing reaming tool technical field, including bottom plate and top plate, the top surface of bottom plate is arranged with several bases, the bottom surface of top plate is located in the top of several bases and is arranged with several reaming rods by first resistance block, several reaming rods and several bases one-to-one correspondence, first protruding section, second protruding section are provided on reaming rod, first protruding section is located below second protruding section, the outer diameter of first protruding section is less than the outer diameter of second protruding section, the outer diameter of first protruding section is greater than the outer diameter of reaming rod. This tool utilizes the setting and common cooperation of reaming rod, base and step-shaped placement groove etc., utilizes reaming rod to move up and down along top plate, first protruding section, second protruding section will pass through three pipe bushing in turn, gradually complete the simultaneous reaming of several three pipe bushings, avoid the damage caused to three pipe bushing by once reaming, greatly improve reaming efficiency and reaming quality, structure setting is simple, efficient.

Description

Technical Field

[0001] This utility model relates to the field of bushing reaming tooling technology, specifically a tooling for reaming the inner diameter of a three-tube bushing. Background Technology

[0002] The traditional three-tube bushing inner diameter enlargement tool consists of a base, a ball bearing, and a pressure rod. During use, the operator places the three-tube bushing on the base, places the ball bearing above the opening of the three-tube bushing, and finally uses the pressure rod to push the ball bearing into the interior of the three-tube bushing, thereby completing the inner diameter enlargement operation of the three-tube bushing.

[0003] However, in the process of processing a large number of three-tube bushings, the wear of the ball bearings is enormous. Since the wear of the ball bearings is not easy to detect, it can easily lead to substandard hole enlargement. Because the ball bearings need to be placed on the three-tube bushings manually, they are prone to popping out during the hole enlargement process, which can lead to hole enlargement failure. The ball bearings need to be placed properly manually, which not only makes it easy for workers to be ejected by the ball bearings, resulting in poor safety, but also reduces the efficiency of hole enlargement of the inner diameter of the three-tube bushings.

[0004] To address this, a tooling for expanding the inner diameter of a three-tube bushing is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for expanding the inner diameter of a three-tube bushing, so as to solve the problem of low expansion efficiency and quality of existing expansion tools mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling for expanding the inner diameter of a three-tube bushing, used for expanding the inner diameter of a three-tube bushing, comprising a base plate and a top plate, wherein a plurality of bases are arranged on the top surface of the base plate, and a plurality of expanding rods are arranged on the bottom surface of the top plate directly above the plurality of bases via a first abutment block, wherein the plurality of expanding rods correspond one-to-one with the plurality of bases; The expanding rod is provided with a first protrusion and a second protrusion. The first protrusion is located below the second protrusion. The outer diameter of the first protrusion is smaller than the outer diameter of the second protrusion, and the outer diameter of the first protrusion is larger than the outer diameter of the expanding rod. The base has a bottom tube on its bottom surface and a stepped placement groove matching the three-tube bushing is opened on the top surface of the base. The stepped placement groove is coaxial with and connected to the bottom tube.

[0007] Preferably, the three-tube bushing includes a central frame disposed therein, and a sensor is embedded in the base below the central frame. A U-shaped groove is provided in the base, and the sensor is connected to a cable. The U-shaped groove is used for the cable to be led out from the base.

[0008] Preferably, a gasket is provided between the inner bottom surface of the stepped placement groove and the bottom surface of the three-tube bushing to match three-tube bushings of different heights.

[0009] Preferably, the bottom plate has bottom fixing blocks on both the left and right sides of its top surface, and an I-shaped block on the top surface of the bottom fixing block. The top surface of the I-shaped block has several grooves, and several bases are located in the grooves. The bottom tube passes through the I-shaped block and the bottom plate. Springs are provided at the four corner edges of the I-shaped block. A stripping plate is provided at the top of the spring. Several through holes matching the expanding rod are arranged on the stripping plate. The inner diameter of the through holes is not less than the outer diameter of the second protrusion, and the inner diameter of the through holes is less than the outer diameter of the three-tube bushing.

[0010] Preferably, the stripping plate is provided with positioning rods on both the left and right sides, the bottom fixing block is provided with side sliding grooves on both the left and right outer side walls, the bottom plate is provided with through grooves at the side sliding grooves, and the lower end of the positioning rod slides in the side sliding groove or through groove.

[0011] Preferably, guide posts are provided at the four corner edges of the I-shaped block and inside the spring, and through holes are provided at the four corner edges of the top surface of the stripper plate for the guide posts to pass through the stripper plate.

[0012] Preferably, a second stop block is provided on both the left and right sides of the bottom surface of the stripping plate to limit the downward movement distance of the stripping plate.

[0013] Preferably, a bottom guide rod is provided at each of the four corners of the top surface of the bottom plate, and a top guide tube is provided at each of the four corners of the bottom surface of the top plate. The bottom guide rod extends into the top guide tube when the top plate moves closer to the bottom plate.

[0014] Preferably, the top surface of the base plate has a bottom fixing opening for fixing the base plate.

[0015] Preferably, the top surface of the top plate has a top fixing opening for fixing the top plate to the movable arm of the press machine.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This tooling utilizes the arrangement and cooperation of the reaming rod, the base, and the stepped placement groove, and utilizes the reaming rod to move up and down with the top plate. The first convex section and the second convex section will pass through the three-tube bushing in sequence, gradually completing the simultaneous reaming of several three-tube bushings, avoiding damage to the three-tube bushings caused by one reaming, greatly improving the reaming efficiency and reaming quality, and the structure is simple and efficient. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention; Figure 2 This is a three-dimensional structural view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a structural view of the base in this utility model; Figure 5 This is a cross-sectional view of the base in this utility model.

[0018] In the diagram: 1. Base plate; 101. Bottom guide rod; 102. Bottom fixing block; 1021. Side sliding groove; 103. I-shaped block; 2. Top plate; 201. Top guide tube; 202. First abutment block; 3. Hole expansion rod; 301. First protrusion; 302. Second protrusion; 4. Stripping plate; 401. Second abutment block; 402. Through hole; 5. Positioning rod; 501. Spring; 502. Guide post; 503. Through hole; 6. Base; 601. Bottom tube; 602. U-shaped groove; 603. Washer ring; 604. Stepped placement groove; 7. Sensor; 701. Cable; 8. Three-tube bushing; 801. Middle frame. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] Reference Figure 1-5 As shown, this utility model provides a technical solution for an inner diameter reaming tool for a three-tube bushing: A tooling for expanding the inner diameter of a three-tube bushing is used to expand the inner diameter of a three-tube bushing 8. It includes a base plate 1 and a top plate 2. A number of bases 6 are arranged on the top surface of the base plate 1. A number of expanding rods 3 are arranged on the bottom surface of the top plate 2 directly above the number of bases 6 and through a first abutment block 202. The number of expanding rods 3 correspond one-to-one with the number of bases 6.

[0023] The expanding rod 3 is provided with a first protrusion 301 and a second protrusion 302. The first protrusion 301 is located below the second protrusion 302. The outer diameter of the first protrusion 301 is smaller than the outer diameter of the second protrusion 302, and the outer diameter of the first protrusion 301 is larger than the outer diameter of the expanding rod 3. The bottom surface of the base 6 is provided with a bottom tube 601. The top surface of the base 6 is provided with a stepped placement groove 604 that matches the three-tube bushing 8. The stepped placement groove 604 is coaxial with and connected to the bottom tube 601.

[0024] Working principle: When using this fixture, first fix the top plate 2 to the movable arm on the press machine in the prior art, and fix the bottom plate 1 to the workbench. At this time, the expanding rod 3 is always located directly above the base 6. The operator places the three-tube bushing 8 in the stepped placement groove 604 on the base 6. By controlling the top plate 2 to move up and down through the press machine, the expanding rod 3 will move up and down with the top plate 2. The first protrusion 301 and the second protrusion 302 will pass through the three-tube bushing 8 in sequence, gradually completing the simultaneous expanding of several three-tube bushings 8. This avoids damage to the three-tube bushing 8 caused by one-time expanding, greatly improving the expanding efficiency and expanding quality. The structure is simple and efficient.

[0025] Since the first convex section 301 and the second convex section 302 are columnar, the wear on their outer diameter is easy to detect, which facilitates timely replacement by the staff, ensuring that the hole expansion operation meets the needs of the three-tube bushing 8, and the hole expansion quality is guaranteed.

[0026] Reference Figure 1-5 As shown, in an optional embodiment: the three-tube bushing 8 includes a central frame 801 disposed therein, and a sensor 7 is embedded in the base 6 below the central frame 801. A U-shaped groove 602 is formed in the base 6, and a cable 701 is connected to the sensor 7. The U-shaped groove 602 is used for the cable 701 to be led out from the base 6. It should be noted that when using this fixture, the cable 701 can be connected to a PLC, and the PLC is connected to a display screen to display in real time whether the sensor 7 has detected the central frame 801. This allows the fixture to detect the presence of the central frame 801 inside the three-tube bushing 8 during the hole enlarging operation, thereby ensuring the production quality of the three-tube bushing 8. The operation is convenient and efficient.

[0027] Reference Figure 1-5As shown, in an optional embodiment, a washer ring 603 is provided between the inner bottom surface of the stepped placement groove 604 and the bottom surface of the three-tube bushing 8 to accommodate three-tube bushings 8 of different heights. It should be noted that this arrangement enhances the adaptability of the tooling and facilitates its widespread application.

[0028] Reference Figure 1-5 As shown, in an optional embodiment: bottom fixing blocks 102 are provided on both the left and right sides of the top surface of the bottom plate 1, and I-shaped blocks 103 are provided on the top surface of the bottom fixing blocks 102. Several grooves are opened on the top surface of the I-shaped blocks 103, and several bases 6 are located in the grooves. The bottom tube 601 passes through the I-shaped block 103 and the bottom plate 1. Springs 501 are provided at the four corner edges of the I-shaped blocks 103. A stripping plate 4 is provided at the top of the springs 501. Several through holes 402 matching the expanding rod 3 are arranged on the stripping plate 4. The inner diameter of the through holes 402 is not less than the outer diameter of the second protrusion 302, and the inner diameter of the through holes 402 is less than the outer diameter of the three-tube bushing 8. It should be noted that, with this setting, when the top plate 2 is away from the bottom plate 1, if the expanding rod 3 is pulled out of the three-tube bushing 8 due to the friction between it and the inner wall of the three-tube bushing 8, when the expanding rod 3 is away from the stripper plate 4, the stripper plate 4 will block the three-tube bushing 8 below it, thereby completing the separation of the expanding rod 3 from the three-tube bushing 8. This makes it easier for the workers to remove the three-tube bushing 8 after the expansion, greatly improving the expanding efficiency of this tooling.

[0029] Reference Figure 1-5 As shown, in an optional embodiment: positioning rods 5 are provided on both the left and right sides of the stripper plate 4, and side sliding grooves 1021 are provided on both the left and right outer walls of the bottom fixing block 102. A through groove is provided on the bottom plate 1 at the side sliding groove 1021, and the lower end of the positioning rod 5 slides in the side sliding groove 1021 or the through groove. It should be noted that, with this arrangement, the stripper plate 4 is always located on the top surface of the I-shaped block 103, thereby ensuring that the hole-expanding rod 3 always accurately passes through the three-tube bushing 8 to complete the hole-expanding operation.

[0030] Reference Figure 1-5 As shown, in an optional embodiment: guide posts 502 are provided at the four corner edges of the I-shaped block 103 and within the spring 501, and through holes 503 are provided at the four corner edges of the top surface of the stripper plate 4 for the guide posts 502 to pass through the stripper plate 4. It should be noted that with this arrangement, the spring 501 will not be bent under pressure when the top plate 2 moves downward, ensuring the normal working state of the spring 501.

[0031] Reference Figure 1-5As shown, in an optional embodiment, a second abutment 401 is provided on both the left and right sides of the bottom surface of the stripper plate 4 to limit the downward movement distance of the stripper plate 4. It should be noted that the provision of the second abutment 401 avoids the spring 501 from being over-compressed and deformed, making the spring 501 more durable and improving the service life of this tooling.

[0032] Reference Figure 1-5 As shown, in an optional embodiment: bottom guide rods 101 are provided at the four corner edges of the top surface of the bottom plate 1, and top guide tubes 201 are provided at the four corner edges of the bottom surface of the top plate 2. The bottom guide rods 101 extend into the top guide tubes 201 when the top plate 2 moves closer to the bottom plate 1. It should be noted that, with this arrangement, when the top plate 2 moves downward, the bottom guide rods 101 slide within the top guide tubes 201, thereby further restricting the downward movement direction of the top plate 2 and ensuring that the reaming rod 3 always accurately passes through the three-tube bushing 8 to complete the reaming operation.

[0033] Reference Figure 1-5 As shown, in an optional embodiment, the top surface of the base plate 1 has a bottom fixing opening for fixing the base plate 1. It should be noted that when using this fixture, the operator can fix the base plate 1 to the workbench using screws passed through the bottom fixing opening, ensuring the stability of the base plate 1 during the reaming operation of the three-tube bushing 8. When the top plate 2 moves downward, the reaming rod 3 always accurately passes through the three-tube bushing 8 to complete the reaming operation.

[0034] Reference Figure 1-5 As shown, in an optional embodiment, the top surface of the top plate 2 has a top fixing opening for fixing the top plate 2 to the movable arm of the press-fitting machine. It should be noted that the press-fitting machine is existing technology, and its movable arm can control the up and down movement of the top plate 2 to complete the enlargement operation of the three-tube bushing 8, which will not be described in detail here.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for expanding the inner diameter of a three-tube bushing (8), comprising a base plate (1) and a top plate (2), characterized in that: The top surface of the base plate (1) is provided with a number of bases (6), and the bottom surface of the top plate (2) is located directly above the number of bases (6). A number of expanding rods (3) are arranged through the first abutment block (202), and the number of expanding rods (3) corresponds one-to-one with the number of bases (6). The enlarging rod (3) is provided with a first protrusion (301) and a second protrusion (302). The first protrusion (301) is located below the second protrusion (302). The outer diameter of the first protrusion (301) is smaller than the outer diameter of the second protrusion (302). The outer diameter of the first protrusion (301) is larger than the outer diameter of the enlarging rod (3). The bottom surface of the base (6) is provided with a bottom tube (601), and the top surface of the base (6) is provided with a stepped placement groove (604) that matches the three-tube bushing (8). The stepped placement groove (604) is coaxial with and connected to the bottom tube (601).

2. The inner diameter reaming tool for a three-tube bushing according to claim 1, characterized in that: The three-tube bushing (8) includes a central frame (801) disposed inside it. A sensor (7) is embedded in the base (6) below the central frame (801). A U-shaped groove (602) is provided in the base (6). The sensor (7) is connected to a cable (701). The U-shaped groove (602) is used for the cable (701) to be led out from the base (6).

3. The inner diameter reaming tool for a three-tube bushing according to claim 1, characterized in that: A gasket (603) is provided between the inner bottom surface of the stepped placement groove (604) and the bottom surface of the three-tube bushing (8) to match three-tube bushings (8) of different heights.

4. The inner diameter reaming tool for a three-tube bushing according to claim 1, characterized in that: Bottom fixing blocks (102) are provided on both the left and right sides of the top surface of the base plate (1). I-shaped blocks (103) are provided on the top surface of the bottom fixing blocks (102). Several grooves are opened on the top surface of the I-shaped blocks (103). Several bases (6) are located in the grooves. The bottom tube (601) passes through the I-shaped blocks (103) and the base plate (1). Springs (501) are provided at the four corner edges of the I-shaped blocks (103). A stripping plate (4) is provided at the top of the springs (501). Several through holes (402) matching the expanding rod (3) are arranged on the stripping plate (4). The inner diameter of the through holes (402) is not less than the outer diameter of the second protrusion (302). The inner diameter of the through holes (402) is less than the outer diameter of the three-tube bushing (8).

5. The inner diameter reaming tool for a three-tube bushing according to claim 4, characterized in that: Positioning rods (5) are provided on both the left and right sides of the stripping plate (4). Side sliding grooves (1021) are provided on both the left and right outer walls of the bottom fixing block (102). A through groove is provided on the bottom plate (1) at the side sliding groove (1021). The lower end of the positioning rod (5) slides in the side sliding groove (1021) or through groove.

6. The inner diameter reaming tool for a three-tube bushing according to claim 5, characterized in that: Guide posts (502) are provided at the four corner edges of the I-shaped block (103) and inside the spring (501). Perforations (503) are provided at the four corner edges of the top surface of the stripping plate (4) for the guide posts (502) to pass through the stripping plate (4).

7. The inner diameter reaming tool for a three-tube bushing according to claim 6, characterized in that: The bottom surface of the stripping plate (4) is provided with a second abutment (401) on both the left and right sides, which is used to limit the downward movement distance of the stripping plate (4).

8. The inner diameter reaming tool for a three-tube bushing according to claim 6, characterized in that: Bottom guide rods (101) are provided at the four corners of the top surface of the bottom plate (1), and top guide tubes (201) are provided at the four corners of the bottom surface of the top plate (2). The bottom guide rods (101) extend into the top guide tubes (201) when the top plate (2) moves closer to the bottom plate (1).

9. The inner diameter reaming tool for a three-tube bushing according to claim 8, characterized in that: The bottom plate (1) has a bottom fixing opening on its top surface for fixing the bottom plate (1).

10. The inner diameter reaming tool for a three-tube bushing according to claim 9, characterized in that: The top surface of the top plate (2) is provided with a top fixing opening for fixing the top plate (2) to the movable arm of the press machine.

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