Tool for removing scrapped lining of assembly part

Abstract

The tool comprises a supporting frame and a lead screw, the supporting frame comprises a supporting column and a supporting beam, the upper portion of the lead screw is provided with a first thread, the lower portion of the lead screw is provided with a second thread, and the thread direction of the first thread is opposite to that of the second thread. The supporting beam is installed on a first thread of the lead screw, a stretching beam is installed on a second thread of the lead screw, the top of the lead screw extends out of the supporting beam and is connected with a wrench, and the bottom of the lead screw penetrates through the stretching beam and is provided with a conical abutting column. The two ends of the stretching beam are hinged to arc-shaped expanding arms respectively, the two expanding arms are oppositely arranged, and a moving channel of the abutting column is formed between the two expanding arms. A tooth buckle used for abutting against the lining is installed at the bottom of the expanding and supporting arm. The bushing removing device can remove bushings with different diameters and lengths, is simple to operate, stable and reliable in bushing removing process, free of damage to a part machine body and high in bushing removing efficiency.

Description

Technical Field

[0001] The utility model relates to the removal of bushings of assembly parts in the machinery industry, in particular to a tool for removing the scrapped bushings of assembly parts. Background Art

[0002] Removing bushings is a common task in the machining industry, especially in assembly workshops. In the past, the removal of scrapped bushings was mostly achieved by mechanical milling, CNC boring or manual knocking. This bushing removal method occupies machine tools and requires more precise CNC machine tools to ensure that the part body holes are not damaged during the operation. It also requires high operator skills and skilled operation capabilities. Utility Model Content

[0003] The technical problem to be solved by the utility model is that, in view of the deficiency that the existing method for removing scrapped bushings needs to occupy machine tool equipment, the utility model provides a tool for quickly removing bushings of different diameters, and the bushing removal process is safe and reliable, with high efficiency, and does not damage the parts body to realize the removal of scrapped bushings of assembly parts.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A tool for removing a scrapped bushing of an assembly part comprises a support frame and a screw rod, the support frame comprises a support column and a support beam, a first thread is arranged on the upper part of the screw rod, a second thread is arranged on the lower part, the thread directions of the first thread and the second thread are opposite, the support beam is installed on the first thread of the screw rod, and a stretching beam is installed on the second thread of the screw rod, the top of the screw rod extends out of the support beam and is connected to a wrench, the bottom of the screw rod passes through the stretching beam and is provided with a conical support column; the two ends of the stretching beam are respectively hingedly connected to arc-shaped expansion arms, the two expansion arms are arranged opposite to each other, and a moving channel for the support column is formed between the two expansion arms; a tooth buckle for tightening the bushing is installed at the bottom of the expansion arm.

[0006] Preferably, the outer side of the tooth button is provided for pressing against the long teeth of the bushing, and the bottom of the tooth button is provided for supporting the shallow teeth of the bushing.

[0007] Preferably, the long teeth are arranged in an arc surface, and the shallow teeth are arranged in a flat surface.

[0008] Preferably, an adjustment groove is provided on the support beam, the upper end of the support column is slidably connected to the support beam, and after the position of the support column is determined, the support column and the support beam are limited by a limiting device.

[0009] Preferably, the limiting device is a limiting screw.

[0010] Preferably, the adjustment groove is an I-shaped groove.

[0011] Preferably, the support beam is arranged orthogonally to the tension beam.

[0012] Preferably, the support column is truncated cone-shaped, and the side surface of the support column is in point contact with the outer arc surface of the expansion arm.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is mainly used for removing the scrapped bushings of assembly parts, solving the problems of low efficiency and poor quality stability of the previous bushing removal schemes, so as to improve the bushing removal efficiency.

[0015] 2. The utility model adopts a screw drive, and realizes the relative movement of each force-bearing component by means of the forward and reverse rotation threads on the screw, thereby completing the extraction of the scrapped bushing along the axial direction of the body hole.

[0016] 3. The utility model can realize the removal of bushings of different diameters and lengths, has a wide range of applications, is easy to operate, and has a stable and reliable bushing removal process without damaging the parts and body. The bushing removal efficiency is high and the market prospect is broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0019] Figure 2 This is the structure diagram of the lead screw.

[0020] Figure 3 This is the structural diagram of the support beam.

[0021] Figure 4 This is the structural diagram of the tensile beam.

[0022] Figure 5 This is the structural diagram of the support column.

[0023] Figure 6 This is a structural diagram of the expansion arm.

[0024] Figure 7 This is a diagram of the tooth button structure.

[0025] Figure 8 This is the structure diagram of the wrench.

[0026] Fig. 9 This is a three-dimensional diagram of the utility model in use.

[0027] Fig.10 It is a front view of the utility model in use state.

[0028] Fig.11 for Fig.10 A-A section view.

[0029] Fig.12 Schematic diagram of the bushing removal process.

[0030] In the figure: 1. screw; 2. support beam; 3. tension beam; 4. support column; 5. expansion arm; 6. M3 screw and nut; 7. threaded buckle; 8. M6 screw and nut; 9. wrench; 10. limit device. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1 - Figure 8 An embodiment of a tool for removing a scrapped bushing of an assembly part according to the utility model comprises a screw rod 1, a support beam 2, a tension beam 3, a support column 4, a spreading arm 5, a threaded button 7 and a wrench 9.

[0035] The upper part of the screw rod 1 is provided with a right-handed first thread 11, and the lower part is provided with a left-handed second thread 12, and the pitch of the first thread 11 and the second thread 12 are the same, the support beam 2 is installed on the first thread 11 of the screw rod 1, and the tension beam 3 is installed on the second thread 12 of the screw rod 1. The tooth profiles of the first thread 11 and the second thread 12 are preferably rectangular teeth.

[0036] The support beam 2 is arranged horizontally, and the support column 4 is arranged vertically. The two ends of the support beam 2 are respectively connected to the support column 4 to form a support frame. An I-shaped adjustment groove 21 is arranged on the support beam 2, and an I-shaped installation groove 41 is arranged on the upper end of the support column 4. The support column 4 is slidably installed on the adjustment groove 21 of the support beam 2 through the installation groove 41, so that the utility model can adjust the position of the support column 4 according to bushings of different diameters, and after the position of the support column 4 is determined, the support column 4 and the support beam 2 are limited by the limit device 10. The limit device 10 is preferably an M6 limit screw.

[0037] The top of the screw rod 1 extends out of the support beam 2 and is connected to the wrench 9, and the bottom of the screw rod 1 passes through the tension beam 3 and is provided with a conical support column 13. The two ends of the tension beam 3 are respectively hingedly connected to the arc-shaped expansion arm 5 through M6 screw nuts 8. The two expansion arms 5 are arranged opposite to each other, and a movement channel of the support column 13 is formed between the two expansion arms 5. The support column 13 is preferably a truncated cone type, and when the utility model is used, the side of the support column 13 is in line contact with the outer arc surface 51 of the expansion arm 5.

[0038] The bottom of the expansion arm 5 is installed with a toothed buckle 7 for pressing against the bushing through an M3 screw nut 6, so that the toothed buckle 7 can rotate relative to the expansion arm 5. By rotating the screw 1 counterclockwise, the toothed buckle 7 first engages with the bushing to complete self-locking, and then as the screw 1 rotates counterclockwise, the bushing is pulled out by the toothed buckle 7. The outer side of the toothed buckle 7 is provided with a long tooth 71 for pressing against the bushing, and the bottom of the toothed buckle 7 is provided with a shallow tooth 72 for supporting the bushing, and the long tooth 71 is arranged perpendicular to the shallow tooth 72. In order to facilitate the linear contact between the long tooth 71 and the inner arm of the bushing, the long tooth 71 is arranged in an arc surface. In order to facilitate the toothed buckle 7 to stably support the inner end face of the bushing, the shallow tooth 71 is arranged in a plane.

[0039] For ease of use, the support beam 2 and the tension beam 3 are arranged orthogonally.

[0040] like Fig. 9 - Fig.12 , the specific working principle of the utility model:

[0041] a) According to the size and length of the bushing 10 on the assembly part 20, first adjust the width of the two support columns 4, and support the tool on the end face of the assembly part 20 where the bushing hole is located.

[0042] b) Adjust the positions of the support beam 2 and the tension beam 3 relative to the lead screw 1, and insert the shallow teeth 72 of the tooth buckle 7 into the gap at the lower end surface of the bushing hole of the assembly part 20.

[0043] c) Turn the wrench 9 counterclockwise, and the screw 1 moves downward along the axial direction of the bushing hole. At the same time, since the threads on the upper and lower sections of the screw 1 rotate in opposite directions, the relative distance between the tension beam 3 and the support column 13 on the screw 1 becomes larger, and the side of the support column 13 opens the expansion arm 5 and pushes the tooth button 7 against the inner wall of the bushing 10 until the long teeth 71 of the tooth button 7 are in linear contact with the inner hole wall of the bushing 10, and the shallow teeth 72 of the tooth button 7 are completely attached to the lower end surface of the bushing 10, completing the locking of the lower parts such as the screw 1, the tension beam 3, the expansion arm 5, the tooth button 7, and the support column 13. After that, the lower parts such as the screw 1, the tension beam 3, the expansion arm 5, the tooth button 7, and the support column 13 no longer move relative to each other.

[0044] d) Continue to rotate the wrench 9 counterclockwise, the screw 1 continues to move upward, and the bushing 10 is closely followed by the components at the lower end of the device of the utility model and is taken away from the assembly part, so that the bushing 10 is removed.

[0045] The above is only a specific implementation scheme of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the field can make many possible changes and modifications to the technical scheme of the utility model by using the technical content disclosed above without departing from the scope of the technical scheme of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical scheme of the utility model shall fall within the protection scope of the technical scheme of the utility model.

Claims

1. A tool for removing a scrapped bushing of an assembly part, comprising a support frame and a screw rod, wherein the support frame comprises a support column and a support beam, the screw rod is provided with a first thread on the upper part and a second thread on the lower part, and the thread directions of the first thread and the second thread are opposite, and the tool is characterized in that: The support beam is installed on the first thread of the screw rod, and the tension beam is installed on the second thread of the screw rod. The top of the screw rod extends out of the support beam and is connected to the wrench, and the bottom of the screw rod passes through the tension beam and is provided with a conical support column; the two ends of the tension beam are respectively hingedly connected to arc-shaped expansion arms, and the two expansion arms are arranged opposite to each other, and a moving channel for the support column is formed between the two expansion arms; the bottom of the expansion arm is provided with a tooth buckle for tightening the bushing.

2. The tool for removing a scrapped bushing of an assembly according to claim 1, characterized in that: The outer side of the tooth button is provided with long teeth for pressing against the bushing, and the bottom of the tooth button is provided with shallow teeth for supporting the bushing.

3. The tool for removing a scrapped bushing of an assembly according to claim 2, characterized in that: The long teeth are arranged in an arc surface, and the shallow teeth are arranged in a plane surface.

4. The tool for removing a scrapped bushing of an assembly according to claim 1, characterized in that: An adjusting groove is arranged on the support beam, the upper end of the support column is slidably connected to the support beam, and after the position of the support column is determined, the support column and the support beam are limited by a limiting device.

5. The tool for removing a scrapped bushing of an assembly according to claim 4, characterized in that: The limiting device is a limiting screw.

6. The tool for removing a scrapped bushing of an assembly according to claim 4, characterized in that: The adjusting groove is an I-shaped groove.

7. The tool for removing a scrapped bushing of an assembly according to claim 1, characterized in that: The support beam is arranged orthogonally to the tension beam.

8. The tool for removing a scrapped bushing of an assembly according to claim 1, characterized in that: The support column is in a truncated cone shape, and the side surface of the support column is in point contact with the outer arc surface of the expansion arm.

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