Shaft sleeve internal and external thread coaxial machining tool

Abstract

The coaxial machining tool comprises a mounting base, a positioning column, an outer positioning piece and an inner positioning piece, the positioning column is arranged in the shaft sleeve in a penetrating mode, and the outer wall of the positioning column abuts against the inner wall of the shaft sleeve; the outer positioning part comprises a plurality of positioning rods, positioning blocks and positioning nuts, the positioning rods are circumferentially arranged around the axis of the positioning column, the lower ends of the positioning blocks abut against the upper end of the shaft sleeve, and the positioning nuts are in threaded connection with the positioning rods and abut against the upper ends of the positioning blocks; the inner positioning piece comprises a threaded rod coaxially arranged on the positioning column in a penetrating mode, the lower end of the threaded rod is in threaded connection with a fastening nut and a plurality of positioning claws connected to the threaded rod, the threaded rod is arranged at the lower end of the mounting base in a penetrating mode, the upper end of the fastening nut abuts against the lower end of the mounting base, and the positioning claws are arranged around the axis of the threaded rod; one end of each positioning claw abuts against the upper end face of the shaft sleeve, and the other end of each positioning claw is connected to the threaded rod. In the machining process, the lower end face of the shaft sleeve is kept horizontal through the mounting base, so that the axis of the shaft sleeve can be kept vertical, and internal and external threads can be kept coaxial.

Description

Technical Field

[0001] The present application relates to the technical field of shaft sleeve clamping tooling, and in particular to a shaft sleeve internal and external thread coaxial processing tooling. Background Art

[0002] After the sleeve is produced, the required structure will be processed on the sleeve surface as needed. Before thread grooves are opened on the inner and outer walls of the sleeve, the position of the sleeve needs to be limited first, and then the sleeve can be processed.

[0003] The patent with application number discloses a vehicle axle sleeve processing and positioning device with good clamping effect, including a support rod, a base, a fixed plate and a drill bit, support rods are installed on both sides of the top of the base, a clamping structure is arranged on one side of the support rod, a connecting block is installed on the top of one end of the base, and the top of the connecting block is connected to the fixed plate, a second servo motor is installed on the top of one end of the fixed plate, and one end of the second servo motor is connected to the fixed block, a drill bit is installed on one end of the fixed block, a disassembly structure is arranged on one end of the drill bit, and an adjustment mechanism is arranged inside the base.

[0004] In the above scheme, a force is directly applied to the two ends of the side walls of the sleeve that are far away from each other to move them closer to each other, so that the position of the sleeve is limited. However, when a force is applied to the sleeve toward the axial direction of the sleeve, the sleeve will undergo a certain slight deformation, thereby affecting the final processing quality.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to prevent the shaft sleeve from deforming during positioning, the present application provides a coaxial processing tool for internal and external threads of the shaft sleeve.

[0007] The present application provides a coaxial processing tool for internal and external threads of a sleeve, which adopts the following technical solution:

[0008] A tool for processing internal and external threads of a shaft sleeve coaxially, comprising a mounting seat, a positioning column arranged on the mounting seat, an outer positioning piece and an inner positioning piece detachably connected to the mounting seat, wherein the positioning column is inserted into the shaft sleeve and the outer wall of the positioning column is kept in contact with the inner wall of the shaft sleeve;

[0009] The external positioning member includes a plurality of positioning rods fixed on the mounting seat, positioning blocks sleeved on the positioning rods, and positioning nuts that limit the position of the positioning blocks. The positioning rods are circumferentially arranged around the axis of the positioning column, the lower end of the positioning block abuts against the upper end of the sleeve, and the positioning nut is threadedly connected to the positioning rods and abuts against the upper end of the positioning block.

[0010] The internal positioning member includes a threaded rod coaxially inserted into the positioning column, a fastening nut threadedly connected to the lower end of the threaded rod, and a plurality of positioning claws connected to the threaded rod. The threaded rod is inserted into the lower end of the mounting seat, the upper end of the fastening nut abuts against the lower end of the mounting seat, the positioning claw is arranged around the axis of the threaded rod, one end of the positioning claw abuts against the upper end surface of the sleeve, and the other end of the positioning claw is connected to the threaded rod.

[0011] By adopting the above technical solution, the verticality of the axis of the sleeve is positioned using the mounting seat, and then the sleeve is kept vertical by the external positioning member and the internal thread is processed. After the processing is completed, the sleeve is positioned by the internal positioning member and the external thread is processed. During the processing, the mounting seat is used to keep the lower end face of the sleeve horizontal, so that the axis of the sleeve can be kept vertical and the internal and external threads can be kept coaxial.

[0012] Optionally: a plurality of guide grooves are opened circumferentially on the outer wall of the threaded rod, and a guide strip cooperating with the guide groove is arranged on the mounting seat, and the guide strip is embedded in the guide groove.

[0013] By adopting the above technical solution, the threaded rod will not rotate when the guide groove and the guide strip cooperate, so that the positioning of the threaded rod by the fastening nut is more convenient.

[0014] Optionally: the upper end of the threaded rod is detachably connected to a connecting disk, and the positioning claws are arranged on the connecting disk at one end close to the threaded rod.

[0015] By adopting the above technical solution, the positioning claws are all set on the same connecting disk. When the threaded rod drives the connecting disk to move downward, the positioning claws can simultaneously limit the position of the sleeve, and the positioning claws can also be removed at the same time, making the process of processing the internal thread more convenient.

[0016] Optionally: a limiting hole is passed through the connecting disk, and a limiting groove is also provided at a position away from each other on the inner wall of the limiting hole, the limiting groove passes through the upper and lower end surfaces of the connecting disk, a limiting rod is fixed on the threaded rod, a limiting block is fixed at the end of the limiting rod away from the threaded rod, and the limiting block passes through the limiting groove and abuts against the upper end of the connecting disk.

[0017] By adopting the above technical solution, the position of the connecting disk relative to the threaded rod is limited by the limiting block, and the limiting of the connecting disk can be achieved by simply rotating the connecting disk during the limiting process.

[0018] Optionally: a support member is fixed to one end of the positioning claw close to the axis of the threaded rod.

[0019] By adopting the above technical solution, the position of the upper end of the positioning claw is limited by the support member, so that the positioning claw itself is not easily deformed when subjected to downward force, and the positioning claw can limit the sleeve more stably.

[0020] Optionally: a plurality of observation grooves are circumferentially penetrated through the upper end surface of the support member.

[0021] By adopting the above technical solution, when installing and removing the connection plate, the connection between the limit block and the limit slot can be observed through the observation slot, and the limit piece can also be directly grasped through the observation slot, making the use of the positioning claw more convenient.

[0022] Optionally: rotating handles are fixed at positions far away from each other on the outer wall of the fastening nut.

[0023] By adopting the above technical solution, when the fastening nut needs to be rotated, force is directly applied to the rotating handle, thereby making the rotation of the fastening nut more labor-saving.

[0024] Optionally: the upper end of the threaded rod is coaxially threadedly connected with an anti-slip nut, and the lower end of the anti-slip nut abuts against the upper end of the positioning column.

[0025] By adopting the above technical solution, when processing the internal thread, the threaded rod can be moved downward so that it is not easy to affect the movement of the tool, and the anti-drop nut is used to prevent the threaded rod from falling off directly from the mounting seat.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Use the inner and outer positioning mechanisms to define the position of the sleeve respectively, and use the mounting seat to define the horizontality of the end surface of the sleeve, so that the axis of the sleeve can be kept vertical;

[0028] 2. By detachably connecting the positioning claws to the threaded rod, the positioning claws can be moved synchronously to tighten the sleeve. At the same time, the positioning claws can be disassembled when processing the internal thread, so that the processing of the internal thread is not easily affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0030] Figure 2 This is a schematic diagram for illustrating the structure of an inner positioning member according to an embodiment of the present application;

[0031] Figure 3 This is a schematic diagram for illustrating the connection structure between the connecting disk and the threaded rod according to an embodiment of the present application.

[0032] In the figure, 1. mounting seat; 11. mounting groove; 13. guide strip; 2. positioning column; 3. external positioning member; 31. positioning rod; 32. positioning block; 33. positioning nut; 4. internal positioning member; 41. threaded rod; 411. guide groove; 412. limiting rod; 413. limiting block; 42. fastening nut; 421. rotating handle; 43. positioning claw; 44. connecting plate; 441. limiting hole; 442. limiting groove; 45. supporting member; 451. observation groove; 46. anti-drop nut. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] The present application discloses a coaxial processing tool for inner and outer threads of a sleeve, such as Figure 1 and Figure 2 As shown, it includes a horizontally arranged mounting seat 1, a positioning column 2 fixed to the upper end of the mounting seat 1, an external positioning member 3 and an internal positioning member 4 detachably connected to the mounting seat 1. The mounting seat 1 is provided with a mounting groove 11 at the lower end, and the mounting groove 11 penetrates a side wall of the mounting seat 1. The sleeve is placed on the upper end surface of the mounting seat 1. The sleeve is sleeved outside the positioning column 2 and the inner part of the sleeve is kept in contact with the outer wall of the positioning column 2. The lower end surface of the sleeve is kept in contact with the upper end surface of the mounting seat 1, so that the axis of the sleeve is kept vertical. The external positioning member 3 includes three positioning rods 31 threadedly fixed to the upper end of the mounting seat 1, positioning blocks 32 respectively sleeved on the positioning rods 31, and positioning nuts 33 that limit the position of the positioning blocks 32. The positioning rods 31 are arranged vertically, and the positioning rods 31 are arranged circumferentially around the axis of the positioning column 2. A gap is left between the positioning rods 31 and the outer wall of the sleeve, so that when the outer wall of the sleeve is threaded, it is not easy to interfere with the positioning rods 31. The positioning block 32 is sleeved on the positioning rod 31 and can move vertically along the positioning rod 31. The lower end of the positioning block 32 is kept in contact with the upper end surface of the sleeve. The positioning nuts 33 are respectively threadedly connected to the positioning rod 31. The lower end of the positioning nuts 33 is in contact with the upper end surface of the positioning block 32, thereby limiting the upward movement of the positioning block 32. When the positioning block 32 applies downward pressure to the sleeve, the mounting seat 1 is used to keep the sleeve in a vertical state, so that after the sleeve is positioned by the external positioning member 3, the inner wall of the sleeve can be threaded, and the processed internal thread can be kept in a vertical state.

[0035] The inner positioning member 4 includes a threaded rod 41 coaxially penetrated on the positioning column 2, a fastening nut 42 threadedly connected to the lower end of the threaded rod 41, and a plurality of positioning claws 43 connected to the threaded rod 41, and the positioning claws 43 are staggered with the positioning block 32. The lower end of the threaded rod 41 is penetrated into the mounting groove 11, and the fastening nut 42 is also arranged in the mounting groove 11, and the upper end of the fastening nut 42 is kept in contact with the upper end of the inner wall of the mounting groove 11. A plurality of rotating handles 421 are fixed on the outer wall of the fastening nut 42, and the fastening nut 42 is driven to rotate by rotating the handle 421, so that the rotation of the fastening nut 42 is more convenient. The positioning claw 43 includes a vertical part and a horizontal part, the horizontal part is arranged at the upper end of the vertical part, the lower end surface of the horizontal part is used to abut against the upper end of the sleeve, and the lower end of the vertical part is welded and fixed to a connecting plate 44, and the lower end of the connecting plate 44 is connected to the threaded rod 41. After the internal thread is processed, the positioning claw 43 is abutted against the upper end of the sleeve, and then the fastening nut 42 is rotated to limit the position of the positioning claw 43 and the sleeve, so that the positioning claw 43 fixes the sleeve on the mounting seat 1, and then the external positioning piece 3 is removed to process the external thread.

[0036] In order to prevent the threaded rod 41 from rotating along its own axis during the rotation of the fastening nut 42, a plurality of vertically arranged guide grooves 411 are circumferentially provided on the outer wall of the threaded rod 41, and the guide grooves 411 penetrate the lower end surface of the threaded rod 41. A plurality of guide bars 13 are integrally formed in the through hole of the positioning column 2 for passing the threaded rod 41, and the guide bars 13 are embedded in the guide grooves 411 and slide, thereby limiting the rotation of the threaded rod 41, so that the threaded rod 41 can only move vertically along its own axis, and the threaded rod 41 will not rotate itself during the rotation of the fastening nut 42, so that the use process of the fastening nut 42 is not easily affected.

[0037] like Figure 3 As shown, the upper end of the connection disk 44 coaxially penetrates the limiting hole 441, the diameter of the limiting hole 441 is smaller than the diameter of the threaded rod 41, and the inner wall of the limiting hole 441 is provided with limiting grooves 442 on the side walls away from each other, and the limiting grooves 442 penetrate the upper and lower end surfaces of the connection disk 44. The upper end of the threaded rod 41 is coaxially integrally formed with a limiting rod 412, the length of the limiting rod 412 is equal to the thickness of the connection disk 44, and the upper end of the limiting rod 412 is integrally formed with a limiting block 413 that cooperates with the limiting groove 442, the limiting block 413 can pass through the limiting groove 442 and move to the upper end of the connection disk 44, and the lower end of the limiting block 413 can abut against the upper end of the connection disk 44, thereby limiting the relative position between the connection disk 44 and the threaded rod 41, and the positioning claw 43 can be directly removed when it is not necessary to use it, so that the processing of the internal thread is not easily affected.

[0038] In order to prevent the overall shape of the positioning claw 43 from changing when the positioning claw 43 is subjected to downward force, a support member 45 is welded and fixed to the end surface of the positioning claw 43 close to the axis of the threaded rod 41. The support member 45 is set in a disc shape, and the outer wall of the support member 45 is fixed to the positioning claw 43 at the same time, and a plurality of observation grooves 451 are circumferentially penetrated on the upper end surface of the support member 45. The support member 45 is used to support the overall shape of the positioning claw 43, so that the positioning claw 43 is not easily deformed when subjected to force, so that the positioning claw 43 can stably limit the position of the shaft sleeve, and the connection between the limit groove 442 and the limit block 413 can also be observed through the observation groove 451.

[0039] Since during the processing, the tool needs to be inserted into the sleeve to process the internal thread of the sleeve, in this case the threaded rod 41 needs to be moved downward to make way for the tool. When the threaded rod 41 moves downward, it is also necessary to prevent the threaded rod 41 from falling off the positioning column 2. Therefore, an anti-slip nut 46 is coaxially threadedly connected to the threaded rod 41. The upper end of the anti-slip nut 46 is flush with the upper end surface of the threaded rod 41, and the lower end of the anti-slip nut 46 can abut against the upper end of the fixed position. Therefore, when the internal thread of the sleeve is processed, the threaded rod 41 can be moved downward until the anti-slip nut 46 abuts against the upper end of the positioning column 2, so that the threaded rod 41 will not affect the use of the tool.

[0040] The implementation principle of this embodiment is as follows: the sleeve is sleeved on the upper end of the positioning column 2 and the lower end of the sleeve is abutted against the upper end of the mounting seat 1, the limit block 413 is sleeved on the limit column and the limit nut is rotated so that the lower end of the limit block 413 abuts against the upper end of the sleeve to achieve the positioning of the sleeve, and then the internal thread is processed on the inside of the sleeve. After the processing is completed, the threaded rod 41 is pushed upward, the connecting plate 44 is connected to the threaded rod 41, and then the fastening nut 42 is rotated to keep the positioning claw 43 abutted against the upper end of the sleeve, the positioning block 32 is disassembled and the external thread of the sleeve is processed.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coaxial processing tool for internal and external threads of a sleeve, characterized by: It comprises a mounting seat (1), a positioning column (2) arranged on the mounting seat (1), an outer positioning member (3) and an inner positioning member (4) detachably connected to the mounting seat (1), wherein the positioning column (2) is inserted into the shaft sleeve and the outer wall of the positioning column (2) is kept in contact with the inner wall of the shaft sleeve; The external positioning member (3) comprises a plurality of positioning rods (31) fixed on the mounting seat (1), positioning blocks (32) sleeved on the positioning rods (31) and positioning nuts (33) for limiting the position of the positioning blocks (32); the positioning rods (31) are circumferentially arranged around the axis of the positioning column (2); the lower end of the positioning block (32) abuts against the upper end of the shaft sleeve; the positioning nut (33) is threadedly connected to the positioning rods (31) and abuts against the upper end of the positioning block (32); The inner positioning member (4) comprises a threaded rod (41) coaxially inserted into the positioning column (2), a fastening nut (42) threadedly connected to the lower end of the threaded rod (41), and a plurality of positioning claws (43) connected to the threaded rod (41), wherein the threaded rod (41) is inserted into the lower end of the mounting seat (1), the upper end of the fastening nut (42) abuts against the lower end of the mounting seat (1), the positioning claws (43) are arranged around the axis of the threaded rod (41), one end of the positioning claws (43) abuts against the upper end surface of the shaft sleeve, and the other end of the positioning claws (43) is connected to the threaded rod (41).

2. A tool for coaxially processing internal and external threads of a sleeve according to claim 1, characterized in that: A plurality of guide grooves (411) are circumferentially formed on the outer wall of the threaded rod (41), and a guide strip (13) matching the guide groove (411) is provided on the mounting seat (1), and the guide strip (13) is embedded in the guide groove (411).

3. The coaxial processing tool for internal and external threads of a sleeve according to claim 1, characterized in that: The upper end of the threaded rod (41) is detachably connected to a connecting disk (44), and one end of the positioning claw (43) close to the threaded rod (41) is arranged on the connecting disk (44).

4. A tool for coaxially processing internal and external threads of a sleeve according to claim 3, characterized in that: The connection disk (44) is penetrated by a limiting hole (441), and a limiting groove (442) is further provided at a position of the inner wall of the limiting hole (441) away from each other, and the limiting groove (442) penetrates the upper and lower end surfaces of the connection disk (44), and a limiting rod (412) is fixed on the threaded rod (41), and a limiting block (413) is fixed on one end of the limiting rod (412) away from the threaded rod (41), and the limiting block passes through the limiting groove (442) and abuts against the upper end of the connection disk (44).

5. A tool for coaxially processing internal and external threads of a sleeve according to claim 4, characterized in that: A support member (45) is fixed to one end of the positioning claw (43) close to the axis of the threaded rod (41).

6. A tool for coaxially processing internal and external threads of a sleeve according to claim 5, characterized in that: A plurality of observation grooves (451) are circumferentially penetrated through the upper end surface of the support member (45).

7. A tool for coaxially processing internal and external threads of a sleeve according to claim 6, characterized in that: Rotating handles (421) are fixed at positions on the outer wall of the fastening nut (42) that are spaced apart from each other.

8. The coaxial processing tool for internal and external threads of a sleeve according to claim 7, characterized in that: The upper end of the threaded rod (41) is coaxially threadedly connected with an anti-slip nut (46), and the lower end of the anti-slip nut (46) abuts against the upper end of the positioning column (2).

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