A dismounting tool for a round workpiece

Abstract

The utility model relates to dismantling frock technical field, concretely is a kind of dismantling frock for circular workpiece, including clamping cylinder, baffle, core rod and impact cylinder, clamping cylinder dismantling is arranged at one end of core rod, baffle dismantling is arranged at the other end of core rod, impact cylinder is sleeved on core rod and impact cylinder slides relative to core rod, impact cylinder is located between clamping cylinder and baffle, recess is provided in the side of clamping cylinder away from core rod, and fixed structure is adjustably arranged on the recess of clamping cylinder.The utility model's dismantling frock for circular workpiece, dismantling frock and the dismantled sleeve are connected and fixed by fixed structure, and the dismantled sleeve is taken down by repeated impact force of impact cylinder, effectively overcome the huge sliding friction force brought by large interference amount, effectively improve the dismounting efficiency, and the dismantled sleeve after dismounting can be used again without being damaged, also not cause damage to speed reducer;It shortens the time of upper bench and milling machine, and simple operation also reduces dismounting cost.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tooling technology, specifically to a disassembly tooling for a circular workpiece. Background Technology

[0002] In terms of structural design, the sleeve and the reducer interface (output shaft) are interference-fitted, meaning that removing the sleeve would result in significant sliding friction. When the design requires changes to the joint, the original joint must be disassembled. During disassembly, the sleeve is essentially removed from the reducer interface. Because the sleeve and reducer end face are completely flush, especially for sleeves with a large interference fit, prying tools cannot be used for disassembly. Even if pryed open, it would damage the reducer and render the sleeve unusable. Traditional methods of disassembling by drilling holes and inserting the shaft on a fitter's workbench are cumbersome and extremely inefficient when disassembling batches of sleeves. Traditional machine tool processing is costly, and due to the interference fit, machining on a machine tool can easily mill into the reducer output shaft. Therefore, a disassembly fixture for round workpieces is urgently needed to solve these problems. Utility Model Content

[0003] To address the technical challenges of disassembling a sleeve and a reducer due to their interference fit, which prevents the use of pry tools and damages the reducer even if pryed open, and renders the sleeve unusable, this invention provides a disassembly fixture for circular workpieces. The fixture is fixed to the sleeve via a fixed structure, and repeated impacts from an impact cylinder remove the sleeve, effectively overcoming the significant sliding friction caused by the large interference fit, thus improving disassembly efficiency. Furthermore, the removed sleeve remains undamaged and can be reused without damaging the reducer. This design shortens the time required for working on a bench or milling machine, is simple to operate, easy to learn, and reduces disassembly costs.

[0004] This utility model provides a disassembly fixture for a circular workpiece, including a clamping cylinder, a baffle, a core rod, and an impact cylinder. The clamping cylinder is detachably disposed at one end of the core rod, and the baffle is detachably disposed at the other end of the core rod. The impact cylinder is sleeved on the core rod and slides relative to the core rod. The impact cylinder is located between the clamping cylinder and the baffle. A groove is provided on the side of the clamping cylinder away from the core rod, and a fixing structure is adjustablely provided on the groove of the clamping cylinder. The clamping cylinder is sleeved on the sleeve to be disassembled, and the sleeve to be disassembled is fixed into the groove of the clamping cylinder by the fixing structure. The impact cylinder is manually slid to the right relative to the core rod, causing the impact cylinder to strike the baffle. The impact of the impact cylinder against the baffle overcomes the sliding friction, and finally the sleeve to be disassembled is pulled out from the reducer interface end (output shaft).

[0005] Furthermore, the fixing structure includes three fastening screws, which are threaded onto the clamping sleeve and arranged in a fan shape. The ends of all three screws pass through the grooves, and the workpiece is fixed between the ends of the three screws. When the clamping sleeve is placed on the sleeve to be disassembled, the three fastening screws are threaded onto the clamping sleeve, and the sleeve to be disassembled is clamped between the ends of the three fastening screws, thus fixing the sleeve to the grooves of the clamping sleeve.

[0006] Furthermore, the outer surface of the clamping cylinder is provided with three notches arranged in a ring. Each notch has a fastening screw hole communicating with it. Each fastening screw is threadedly connected to the fastening screw hole, and the end of the fastening screw passes through the fastening screw hole into the groove. The three fastening screws are threadedly fixed to the three fastening screw holes, but the heads of the three fastening screws are not locked in the notches. The ends of the three fastening screws clamp the disassembled sleeve, thus fixing the disassembled sleeve in the groove.

[0007] Furthermore, it also includes a gasket, which is wrapped around and fixed to the outer surface of the workpiece, with the ends of the three fastening screws all in contact with the gasket. The gasket effectively protects the outer surface of the disassembled sleeve from damage, allowing the disassembled sleeve to be reused subsequently.

[0008] Furthermore, a first threaded rod is fixedly provided at one end of the core rod, and a first threaded hole matching the first threaded rod is provided on the clamping cylinder. The first threaded hole communicates with the groove, and the first threaded rod is threadedly connected to the first threaded hole. The end of the first threaded rod passes through the first threaded hole into the groove. The threaded connection between the first threaded rod and the first threaded hole fixes the clamping cylinder to one end of the core rod.

[0009] Furthermore, a second threaded rod is fixedly provided at the other end of the core rod, and a second threaded hole matching the first threaded rod is provided on the baffle. The second threaded rod is threadedly connected to the second threaded hole. The second threaded rod and the second threaded hole are threadedly connected, thus fixing the baffle to the other end of the core rod.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This invention's disassembly fixture differs from previous pry-based disassembly methods. The fixture is fixedly connected to the sleeve to be disassembled via a fixed structure. Repeated impact from an impact cylinder removes the sleeve, effectively overcoming the significant sliding friction caused by the large interference fit, thus improving disassembly efficiency. Furthermore, the disassembled sleeve remains undamaged and can be reused without damaging the reducer. Using this fixture to disassemble the sleeve shortens the time spent on the fitter's workbench and milling machine, is simple to operate, easy to learn, and reduces disassembly costs. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a disassembly fixture for a circular workpiece according to this utility model;

[0013] Figure 2 This is an exploded structural diagram of the disassembly tooling of this utility model;

[0014] Figure 3 This is a cross-sectional structural diagram of the disassembly fixture of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the clamping cylinder of this utility model;

[0016] The numbers in the attached diagram are:

[0017] 1. Clamping cylinder; 11. Groove; 12. Notched groove; 13. Fastening screw hole; 14. First threaded hole; 2. Baffle; 21. Second threaded hole; 3. Core rod; 31. First threaded rod; 32. Second threaded rod; 4. Impact cylinder; 5. Fastening screw; 6. Washer. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1-4 As shown, a disassembly fixture for a circular workpiece includes a clamping cylinder 1, a baffle 2, a core rod 3, and an impact cylinder 4. The clamping cylinder 1 is detachably disposed at one end of the core rod 3, and the baffle 2 is detachably disposed at the other end of the core rod 3. The impact cylinder 4 is sleeved on the core rod 3 and slides relative to the core rod 3. The impact cylinder 4 is located between the clamping cylinder 1 and the baffle 2. A groove 11 is provided on the side of the clamping cylinder 1 facing away from the core rod 3, and a fixing structure is adjustablely provided on the groove 11 of the clamping cylinder 1. The circular workpiece can be a product with an interference-fitted sleeve, pin, or connecting rod structure. This embodiment uses the disassembly of a sleeve as an example for explanation. The clamping cylinder 1, baffle 2, core rod 3, and impact cylinder 4 are coaxially arranged.

[0020] Disassemble the tooling first, then assemble it. The impact cylinder 4 is fitted onto the core rod 3, the clamping cylinder 1 is fixed to one end of the core rod 3, and the baffle 2 is fixed to the other end of the core rod 3.

[0021] Instructions for use: Place the clamping cylinder 1 onto the sleeve to be disassembled, and use the fixing structure to secure the sleeve to be disassembled into the groove 11 of the clamping cylinder 1. Manually slide the impact cylinder 4 to the right relative to the core rod 3, causing the impact cylinder 4 to strike the baffle 2. The impact of the impact cylinder 4 against the baffle 2 overcomes the sliding friction, ultimately pulling the sleeve to be disassembled out from the reducer interface end (output shaft). The disassembly fixture in this embodiment effectively solves the problem of difficult disassembly of the sleeve when it is interference-fitted, improves disassembly efficiency, and avoids damage to the mating product (reducer).

[0022] The disassembly fixture in this embodiment differs from previous pry-based disassembly methods. The disassembly fixture and the sleeve to be disassembled are connected and fixed via a fixed structure. The sleeve is removed by repeated impacts from the impact cylinder 4, effectively overcoming the enormous sliding friction caused by the large interference fit, thus significantly improving disassembly efficiency. Furthermore, the removed sleeve remains undamaged and can be reused without damaging the reducer. Using this disassembly fixture to disassemble the sleeve shortens the time spent on the fitter's workbench and milling machine, is simple to operate, easy to learn, and reduces disassembly costs.

[0023] In this embodiment, the two ends of the core rod 3 are detachably connected to the clamping cylinder 1 and the baffle 2, facilitating the replacement and assembly of parts of the disassembly tooling (such as the clamping cylinder 1), and exhibiting strong adaptability. The clamping cylinder 1 can be adjusted according to the diameter of the sleeve to be disassembled, thereby achieving adaptability of the disassembly tooling to the workpiece (such as the sleeve). The disassembly tooling of this embodiment has a wide range of applications and can be used for all pins, sleeves, and other products (these products have interference connections, are not convenient to disassemble using pry tools, and have requirements that they cannot be damaged). The disassembly tooling of this embodiment can be machined and designed according to the specific specifications of the sleeve.

[0024] In one possible implementation, the fixing structure includes three fastening screws 5, which are threaded onto the clamping sleeve 1 and arranged in a ring. The ends of all three screws 5 penetrate into the groove 11, and the circular workpiece is fixed between the ends of the three screws 5. The fastening screws 5 are long screws. This connection method using fastening screws 5 can be used for disassembling sleeves with a larger diameter range.

[0025] The clamping sleeve 1 is placed on the sleeve to be disassembled, and three fastening screws 5 are threaded onto the clamping sleeve 1. The sleeve to be disassembled is clamped between the ends of the three fastening screws 5, and the sleeve to be disassembled is fixed in the groove 11 of the clamping sleeve 1.

[0026] The three screws are used to simulate a three-jaw chuck. The three fastening screws 5 can be used to manually fix the axis to ensure that no tilting force is generated. This can make the disassembly tool and the sleeve being disassembled as close as possible to the same axis, and avoid generating other overturning moments, making disassembly easier.

[0027] After the clamping sleeve 1 is adjusted according to the diameter of the sleeve being disassembled, other sizes of fastening screws 5 can also be used for adjustment.

[0028] In one possible implementation, the outer surface of the clamping cylinder 1 is provided with three notches 12 arranged in a ring. Each notch 12 has a fastening screw hole 13 connecting the notch 12 and the groove 11. The fastening screw hole 13 is located on the side wall of the clamping cylinder 1. Each fastening screw 5 is threadedly connected to the fastening screw hole 13, and the end of the fastening screw 5 passes through the fastening screw hole 13 into the groove 11. Specifically, the three fastening screws 5 are threadedly fixed to the three fastening screw holes 13. The heads of the three fastening screws 5 are not locked in the notches 12. The ends of the three fastening screws 5 clamp the disassembled sleeve, thus fixing the disassembled sleeve in the groove 11. When the disassembly fixture of this embodiment is not in use, the heads of the fastening screws 5 can be locked in the notches 12.

[0029] As one possible implementation, a washer 6 is also included, which is wound around and fixed to the outer surface of the workpiece, and the ends of the three fastening screws 5 are all in contact with the washer 6. The washer 6 can be made of copper. The washer 6 is wound around and fixed to the outer surface of the sleeve being disassembled, and in fact, the washer 6 is annular.

[0030] The ends of the three fastening screws 5 are pressed against the washer 6, thus fixing the disassembled sleeve and the washer 6 between the ends of the three fastening screws 5. The washer 6 effectively protects the outer surface of the disassembled sleeve from damage, and the disassembled sleeve can be reused later.

[0031] Preferably, in addition to providing a gasket 6 on the outer surface of the sleeve to be disassembled, a clamshell tire can be used instead of the gasket 6. That is, the clamshell tire is wrapped around and fixed on the outer surface of the sleeve to be disassembled. The clamshell tire is made of flexible material, which can achieve better protection for the sleeve to be disassembled.

[0032] In one possible implementation, a first threaded rod 31 is fixedly provided at one end of the core rod 3. The first threaded rod 31 is located at the center of one end of the core rod 3. The clamping cylinder 1 is provided with a first threaded hole 14 that matches the first threaded rod 31. The first threaded hole 14 is located at the center of the clamping cylinder 1 and at the bottom of the clamping cylinder 1. The first threaded hole 14 communicates with the groove 11. The first threaded rod 31 is threadedly connected to the first threaded hole 14, and the end of the first threaded rod 31 passes through the first threaded hole 14 into the groove 11. The first threaded rod 31 is provided with a first external thread (not shown in the figure), and the first threaded hole 14 is provided with a first internal thread (not shown in the figure) that matches the first external thread. The first threaded rod 31 and the first threaded hole 14 are threadedly connected through the first external thread and the first internal thread, thus fixing the clamping cylinder 1 to one end of the core rod 3. The first threaded rod 31 is located to the right of the three fastening screws 5, without affecting the normal operation of the fastening screws 5. Preferably, the first threaded rod 31 is fixed to one end of the core rod 3, at which time the clamping cylinder 1 is in contact with one end of the core rod 3.

[0033] In one possible implementation, a second threaded rod 32 is fixedly provided at the other end of the core rod 3. The second threaded rod 32 is located at the center of the other end of the core rod 3. The baffle 2 is provided with a second threaded hole 21 that matches the first threaded rod 31. The second threaded hole 21 is located at the center of the baffle 2. The second threaded rod 32 is threadedly connected to the second threaded hole 21. The second threaded rod 32 is provided with a second external thread (not shown in the figure), and the second threaded hole 21 is provided with a second internal thread (not shown in the figure) that matches the second external thread. The second threaded rod 32 and the second threaded hole 21 are threadedly connected through the second external thread and the second internal thread, thus fixing the baffle 2 to the other end of the core rod 3. Preferably, the second threaded rod 32 is fixed to the other end of the core rod 3, at which point the baffle 2 is in contact with the other end of the core rod 3.

[0034] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A disassembly fixture for a circular workpiece, characterized in that, The device includes a clamping cylinder (1), a baffle (2), a core rod (3), and an impact cylinder (4). The clamping cylinder (1) is detachably disposed at one end of the core rod (3), and the baffle (2) is detachably disposed at the other end of the core rod (3). The impact cylinder (4) is sleeved on the core rod (3) and slides relative to the core rod (3). The impact cylinder (4) is located between the clamping cylinder (1) and the baffle (2). The clamping cylinder (1) has a groove (11) on the side away from the core rod (3). The groove (11) of the clamping cylinder (1) is adjustablely provided with a fixing structure.

2. The disassembly fixture for a circular workpiece according to claim 1, characterized in that, The fixing structure includes three fastening screws (5), which are threaded onto the clamping cylinder (1) and are arranged in a ring. The ends of the three fastening screws (5) are all inserted into the groove (11) and the circular workpiece is fixed between the ends of the three fastening screws (5).

3. The disassembly fixture for a circular workpiece according to claim 2, characterized in that, The outer surface of the clamping cylinder (1) is provided with three notches (12), which are arranged in a ring. Each notch (12) is provided with a fastening screw hole (13) that connects the notch (12) and the groove (11). Each fastening screw (5) is threaded to the fastening screw hole (13) and the end of the fastening screw (5) passes through the fastening screw hole (13) into the groove (11).

4. The disassembly fixture for a circular workpiece according to claim 3, characterized in that, It also includes a washer (6), which is fixed around the outer surface of the circular workpiece, and the ends of the three fastening screws (5) are in contact with the washer (6).

5. The disassembly fixture for a circular workpiece according to claim 1, characterized in that, One end of the core rod (3) is fixedly provided with a first threaded rod (31), and the clamping cylinder (1) is provided with a first threaded hole (14) that matches the first threaded rod (31). The first threaded hole (14) communicates with the groove (11), and the first threaded rod (31) is threadedly connected to the first threaded hole (14). The end of the first threaded rod (31) passes through the first threaded hole (14) to the inside of the groove (11).

6. The disassembly fixture for a circular workpiece according to claim 1, characterized in that, The other end of the core rod (3) is fixedly provided with a second threaded rod (32), and the baffle (2) is provided with a second threaded hole (21) that matches the first threaded rod (31). The second threaded rod (32) is threadedly connected to the second threaded hole (21).

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