A multi-specification outer hexagonal bolt screwing tool

Abstract

The application relates to a multi-specification outer hexagonal bolt screwing tool and relates to the technical field of dismounting tools. The application solves the problems that the existing outer hexagonal bolt screwing tool suitable for robot operation is large in size, small in contact area with the outer hexagonal bolt and needs to be replaced when screwing different specifications of outer hexagonal bolts. The application comprises a rack, a central screwing rotating wheel, C-shaped clamping sliding blocks, I-shaped clamping sliding blocks, sliding rails, a motor, a motor output shaft, a shell and a power interface. The sliding rail axis coincides with the symmetrical axis of the rack in the horizontal plane. The C-shaped clamping sliding blocks and the I-shaped clamping sliding blocks are slidably assembled together with the sliding rails and are uniformly distributed in the circumferential direction. The I-shaped clamping sliding blocks can slide relative to the C-shaped clamping sliding blocks. The shell is fixedly connected with the rack. The motor is fixedly connected in the shell. The central screwing rotating wheel is fixedly connected with the motor output shaft. The application is used for dismounting multi-specification outer hexagonal bolts.

Description

TECHNICAL FIELD

[0001] The present application relates to a screwing tool, in particular to a two-section multi-specification outer hexagonal bolt screwing tool, and belongs to the field of bolt tightening and dismounting. BACKGROUND

[0002] The outer hexagonal bolt is a mechanical part composed of an outer hexagonal head and a screw rod (a cylinder with external threads), and is a kind of fastener commonly used for connecting mechanical structures. During the daily use of machinery, wear and aging of parts become inevitable problems. In some special working environments where human maintenance operations are difficult, such as radiation environments and space environments, it is necessary to use robots to maintain machinery that needs to replace parts.

[0003] However, the robot currently needs to replace different specifications of tools when facing different specifications of outer hexagonal bolt screwing, especially in special working environments, which increases the difficulty of the robot's work and affects the operation speed of the robot. The existing outer hexagonal bolt screwing tool suitable for robot operation has the problems of large volume, small contact area between the outer hexagonal bolt, and the need to replace the screwing tool when screwing different specifications of outer hexagonal bolts, which is difficult to meet the requirements of maintenance tasks.

[0004] In summary, the existing outer hexagonal bolt screwing tool suitable for robot operation has the problems of large volume, small contact area between the outer hexagonal bolt, and the need to replace the screwing tool when screwing different specifications of outer hexagonal bolts. SUMMARY

[0005] The purpose of the present application is to solve the problems of the existing outer hexagonal bolt screwing tool suitable for robot operation, such as large volume, small contact area between the outer hexagonal bolt, and the need to replace the screwing tool when screwing different specifications of outer hexagonal bolts, and to provide a multi-specification outer hexagonal bolt screwing tool.

[0006] The technical solution of the present application is:

[0007] The utility model provides a multi-specification outer hexagonal bolt screwing tool, including frame, central screwing rotating wheel, slide rail, motor, shell and a plurality of outer diameter adjusting components, wherein, outer diameter adjusting component includes a plurality of C type clamping slide and a plurality of I type clamping slide, and a plurality of outer diameter adjusting components are arranged in annular array mode, shell is cylindrical casing, and the motor is installed in the shell, and the output shaft of motor is stretched out of the shell, and the upper portion of central screwing rotating wheel is connected with the output shaft of motor, and the bottom end surface of central screwing rotating wheel is processed with driving thread, and the upper portion of frame is connected with the lateral wall of shell, and the lower portion of frame is inserted in the horizontally arranged slide rail, a plurality of C type clamping slides are slidably installed in the slide rail in annular array mode, the hollow portion of each C type clamping slide is installed with an I type clamping slide, and the I type clamping slide is slidably arranged on the slide rail, and the upper end surface of C type clamping slide and I type clamping slide is processed with C type driven thread and I type driven thread respectively, and driving thread is threadedly connected with C type driven thread and I type driven thread, and under the rotation of central screwing rotating wheel, the movement of I type clamping slide in C type clamping slide is realized, or the simultaneous movement of I type clamping slide and C type clamping slide is realized, so that a plurality of I type clamping slides and / or C type clamping slides move towards the center of slide rail simultaneously or move away from the center of slide rail simultaneously.

[0008] Further, the frame includes a plurality of connecting rods, one end of the plurality of connecting rods is detachably mounted on the lateral wall of the shell, and the other end of the plurality of connecting rods is first inclined downward and outward and then extends downward and back into the slide rail.

[0009] Still further, the central screwing rotating wheel is a circular truncated cone rotating wheel, the central screwing rotating wheel includes an upper connecting seat, a lower threaded seat, and a plurality of rod bodies, the upper connecting seat is keyed connected with the output shaft of the motor, the lower threaded seat is installed in parallel and coaxially below the upper connecting seat, one end of each of the plurality of rod bodies is connected with the upper connecting seat, and the other end of each of the plurality of rod bodies is connected with the lower threaded seat.

[0010] Still further, a sliding groove is processed on the bottom end surface of the C type clamping slide, the open side end surface of the C type clamping slide is a C type contact surface, and a pair of recesses are respectively processed on the open side inner end surface of the C type clamping slide.

[0011] Preferably, the helical tooth shape of the driving thread is consistent with the helical tooth shape of the C type driven thread and the I type driven thread.

[0012] Preferably, the processing planes of the C type driven thread and the I type driven thread are the same plane, and the helical lines are consistent.

[0013] Preferably, the number of radial processing turns of the C type driven thread is less than the number of radial processing turns of the I type driven thread.

[0014] Further, the slide rail comprises an upper mounting plate, a lower mounting plate, a plurality of limiting columns and a plurality of slide ways, the upper mounting plate and the lower mounting plate are arranged in parallel, a plurality of limiting columns are arranged between the upper mounting plate and the lower mounting plate in a ring array, and one slide way is arranged in each limiting column.

[0015] Preferably, the upper part of the shell is processed with a power interface.

[0016] Preferably, the number of outer diameter adjusting assemblies is 3.

[0017] Compared with the prior art, the present application has the following effects:

[0018] 1、The motor is connected with the central screwing rotating wheel 2, and the outer diameter adjusting assembly is screw-connected with the thread of the central screwing rotating wheel 2, so that the outer diameter adjusting assembly is close to or away from the central screwing rotating wheel 2 in the axial direction, to adapt to the clamping of the outer hexagonal bolt with different outer diameters, under the action of external force, the screwing tool of the present application is driven to rotate forward or reverse, to realize the disassembly and assembly of the outer hexagonal bolt, which is simple in structure, reliable in screwing and wide in application range.

[0019] 2、The present application is a columnar body, and the middle part of the present application has a space for accommodating the head of the outer hexagonal bolt, which is mainly realized by the height of the central screwing rotating wheel, so that the working space is small, and the contact area between the present application and the outer hexagonal bolt is a C-shaped contact surface 33 and an I-shaped contact surface 43, the contact area is large, and the clamping is more stable during screwing.

[0020] 3、The present application does not need to replace the tool when screwing various specifications of outer hexagonal bolts, and the two-section type working tool is smaller in size. DETAILED DESCRIPTION

[0021] Figure 1 is a schematic view of the overall structure of the tool;

[0022] Figure 2 is a partial view of Figure 1 ;

[0023] Figure 3 is a schematic view of a C-shaped clamping slide block;

[0024] Figure 4 is a schematic view of an I-shaped clamping slide block;

[0025] Figure 5 is a bottom view in a working state;

[0026] Figure 6 is a working bottom view in a larger working space;

[0027] Figure 7 is a working bottom view in a smaller working space; DETAILED DESCRIPTION

[0028] Specific implementation method one: Combining Figures 1 to 7 This embodiment describes a multi-specification hexagonal bolt tightening tool, comprising a frame 1, a central tightening wheel 2, a slide rail 5, a motor 6, a housing 7, and multiple outer diameter adjustment components. The outer diameter adjustment components include multiple C-type clamping sliders 3 and multiple I-type clamping sliders 4, arranged in a circular array. The housing 7 is a cylindrical shell, with the motor 6 installed inside and its output shaft extending out. The upper part of the central tightening wheel 2 is connected to the output shaft of the motor 6, and a drive thread 21 is machined on its bottom surface. The upper part of the frame 1 is connected to the outer wall of the housing 7, and the lower part of the frame 1 is inserted into the horizontally arranged slide rail 5. The multiple C-type clamping sliders 3 are arranged in a circular array. The C-type clamping slider 3 is slidably installed in the slide rail 5 in an array. Each hollow part of the C-type clamping slider 3 is equipped with an I-type clamping slider 4, and the I-type clamping slider 4 is slidably arranged on the slide rail 5. The upper end faces of the C-type clamping slider 3 and the I-type clamping slider 4 are respectively machined with C-type driven threads 31 and I-type driven threads 41. The driving thread 21 is threadedly connected to the C-type driven threads 31 and I-type driven threads 41. Under the rotation of the central turning wheel 2, the I-type clamping slider 4 can move within the C-type clamping slider 3, or the I-type clamping slider 4 and the C-type clamping slider 3 can move simultaneously, so that multiple I-type clamping sliders 4 and / or C-type clamping sliders 3 move simultaneously toward the center of the slide rail 5 or simultaneously move away from the center of the slide rail 5. The assembly includes a frame 1, a central rotating wheel 2, a C-type clamping slider 3, an I-type clamping slider 4, a slide rail 5, a motor 6, a motor output shaft 61, a housing 7, and a power interface 8. The frame 1 is vertically arranged. The axis of the slide rail 5 coincides with the axis of symmetry of the frame 1 in the horizontal plane, and they are evenly distributed circumferentially and fixedly assembled together. The C-type clamping slider 3 and the I-type clamping slider 4 are slidably assembled together with the slide rail 5 and are evenly distributed circumferentially. The I-type clamping slider 4 can slide relative to the C-type clamping slider 3. The housing 7 is fixedly connected to the frame 1. The motor 6 is fixedly connected inside the housing 7. The central rotating wheel 2 is fixedly connected to the motor output shaft 61.

[0029] In this embodiment, the driving thread 21 is machined along the helix of the central turning wheel 2. At the same time, the C-type clamping slider 3 is machined with a C-type driven thread 31 along the helix, and the I-type clamping slider 4 is machined with an I-type driven thread 41 along the helix. The driving thread 21, the C-type driven thread 31, and the I-type driven thread 41 have the same helical tooth profile. The machining planes of the C-type driven thread 31 and the I-type driven thread 41 are the same plane, and their helical lines are consistent. The I-type driven thread 41 has more radial machining turns than the C-type driven thread 31. The driving thread 21 is threadedly engaged with the C-type driven thread 31 and the I-type driven thread 41. The motor output shaft 61 drives the central turning wheel 2 to rotate, and the C-type clamping slider 3 and the I-type clamping slider 4 move along the axis of the slide rail 5.

[0030] Specific implementation two: combination Figures 1 to 2 In this embodiment, the rack 1 comprises a plurality of connecting rods 1-1, one end of the plurality of connecting rods 1-1 is detachably mounted on the outer side wall of the shell 7, and the other end of the plurality of connecting rods 1-1 is first inclined downward and outward and then extends downward into the slide rail 5. In this way, the rack 1 has a stable structure, and the tool can provide better rigid support for tightening the outer hexagonal bolt with different torque. The other components and connection relationships are the same as those in specific implementation one.

[0031] Specific implementation three: combination Figures 1 to 2 In this embodiment, the central screwing rotating wheel 2 is a circular truncated cone rotating wheel, which comprises an upper connecting seat 2-1, a lower threaded seat 2-2, and a plurality of rod bodies 2-3. The upper connecting seat 2-1 is connected with the output shaft of the motor 6 by a key, the lower threaded seat 2-2 is installed in parallel and coaxially below the upper connecting seat 2-1, one end of each of the plurality of rod bodies 2-3 is connected with the upper connecting seat 2-1, and the other end of each of the plurality of rod bodies 2-3 is connected with the lower threaded seat 2-2. In this way, sufficient working space is provided in the vertical direction, which facilitates installation and reduces the processing difficulty compared to the integrated structure. The other components and connection relationships are the same as those in specific implementation one or two.

[0032] Specific implementation four: combination Figure 3 In this embodiment, the C-shaped clamping sliding block 3 has a sliding groove 3-1 machined on the bottom end face, the open side end face of the C-shaped clamping sliding block 3 is a C-shaped contact surface 33, and one relatively arranged groove 32 is machined on the inner end face of the open side of the C-shaped clamping sliding block 3. In this way, the grooves 32 cooperate with the I-shaped clamping sliding block 4 to achieve tool reset. The other components and connection relationships are the same as those in specific implementation one, two or three.

[0033] Specific implementation five: combination Figures 1 to 4 In this embodiment, the active thread 21 has the same helical tooth shape as the C-shaped driven thread 31 and the I-shaped driven thread 41. In this way, the active thread 21 and the C-shaped driven thread 31 and the I-shaped driven thread 41 achieve better engagement. The other components and connection relationships are the same as those in specific implementation one, two, three or four.

[0034] Specific implementation six: combination Figures 1 to 4 In this embodiment, the machining planes of the C-shaped driven thread 31 and the I-shaped driven thread 41 are the same plane, and the helical lines are consistent. In this way, the thread engagement accuracy is guaranteed. The other components and connection relationships are the same as those in specific implementation one, two, three, four or five.

[0035] Specific implementation seven: combinationFigures 1 to 4 In this embodiment, the number of radial machining turns of the C-type driven thread 31 is less than that of the I-type driven thread 41. In this way, the C-type driven thread 31 is engaged with the driving thread 21 for a short time, and the I-type driven thread 41 is engaged with the driving thread 21 for a long time. The other components and connection relationships are the same as those in embodiments one, two, three, four, five, or six.

[0036] Embodiment eight Figures 1 to 2 In this embodiment, the slide rail 5 includes an upper mounting plate 5-1, a lower mounting plate 5-2, a plurality of limiting columns 5-3, and a plurality of slides 5-4. The upper mounting plate 5-1 and the lower mounting plate 5-2 are arranged in parallel, the plurality of limiting columns 5-3 are arranged in a circular array between the upper mounting plate 5-1 and the lower mounting plate 5-2, and each group of limiting columns 5-3 is provided with a slide 5-4. In this way, the installation and positioning of the plurality of C-type clamping sliders 3 and the plurality of I-type clamping sliders 4 are achieved. The other components and connection relationships are the same as those in embodiments one, two, three, four, five, six, or seven.

[0037] Embodiment nine Figure 1 In this embodiment, the upper part of the shell 7 is provided with a power interface 8. In this way, the connection with an external power source is facilitated, the rotating tool of the present application is driven to rotate, and the external hexagonal bolt is unscrewed. The other components and connection relationships are the same as those in embodiments one, two, three, four, five, six, seven, or eight.

[0038] Embodiment ten Figures 1 to 2 In this embodiment, the number of outer diameter adjustment assemblies is three. In this way, the structure is compact, the clamping space is reserved for smaller external hexagonal bolts, and the clamping of different sizes of external hexagonal bolt heads is suitable. The other components and connection relationships are the same as those in embodiments one, two, three, four, five, six, seven, eight, or nine.

[0039] Embodiment eleven Figures 1 to 7 The working principle of the present application is as follows:

[0040] The present application includes a rack 1, a central screwing rotating wheel 2, a C-type clamping slider 3, an I-type clamping slider 4, a slide rail 5, a motor 6, a motor output shaft 61, a shell 7, and a power interface 8. The rack 1 is vertically arranged, the axis of the slide rail 5 coincides with the axis of symmetry of the rack 1 in the horizontal plane, and they are fixed together. The C-type clamping slider 3 and the I-type clamping slider 4 are slidably assembled together with the slide rail 5, and the I-type clamping slider 4 can slide relative to the C-type clamping slider 3. The shell 7 is fixed to the rack 1, and its axis coincides with the axis of the rack 1. The motor 6 is fixed in the shell 7, and the central screwing rotating wheel 2 is fixed together with the motor output shaft 61.

[0041] When the size of the operation space needs to be adjusted, the motor provides power to drive the central screwing rotating wheel 2 to rotate. During the rotation of the central screwing rotating wheel 2, the driving thread 21 is engaged with the C-type driven thread 31 and the I-type driven thread 41. The central screwing rotating wheel 2 drives the circumferentially distributed C-type clamping sliders 3 and the I-type clamping sliders 4 to move radially, so that the circumferentially distributed C-type clamping sliders 3 and the I-type clamping sliders 4 are close or far away, achieving the purpose of adjusting the size of the operation space.

[0042] When the tool is ready to work, the C-type clamping sliders 3 and the I-type clamping sliders 4 are located at the initial position, and the C-type contact surface 33 is coplanar with the I-type contact surface 43.

[0043] When the required operation space is large, the central screwing rotating wheel 2 drives the circumferentially distributed C-type clamping sliders 3 and the I-type clamping sliders 4 to move radially, so that the circumferential C-type clamping sliders 3 and the I-type clamping sliders 4 are close. The circumferentially distributed C-type contact surface 33 and the I-type contact surface 43 jointly form an operation space, meeting the operation needs of large-sized external hexagonal bolts. It should be noted that the length of the C-type contact surface 33 and the I-type contact surface 43 is longer than the thickness of the C-type clamping slider 3 and the I-type clamping slider 4, which facilitates increasing the contact area with the external hexagonal bolt. When the operation is completed, the central screwing rotating wheel 2 rotates in the opposite direction, driving the circumferentially distributed C-type clamping sliders 3 and the I-type clamping sliders 4 to reset. The C-type clamping slider 3 and the I-type clamping slider 4 return to the standby state.

[0044] When the required operation space is small, the central screwing rotating wheel 2 continues to rotate. Since the I-type driven thread 41 has more radial machining turns than the C-type driven thread 31, the C-type clamping slider 3 advances a certain distance along the radial direction, and the C-type driven thread 31 disengages from the driving thread 21. The I-type driven thread 41 continues to engage with the driving thread 21, and the I-type clamping slider 4 continues to move radially. The circumferentially distributed I-type contact surface 43 jointly forms an operation space, meeting the operation needs of small-sized external hexagonal bolts. When the operation is completed, the central screwing rotating wheel 2 rotates in the opposite direction, driving the circumferentially distributed I-type clamping sliders 4 to move away from each other along the radial direction. After moving a certain distance, the boss 42 contacts the groove 32. The I-type clamping slider 4 drives the C-type clamping slider 3 to move. The driving thread 21 engages with the C-type driven thread 31 and the I-type driven thread 41. The central screwing rotating wheel 2 continues to rotate, driving the circumferentially distributed C-type clamping sliders 3 and the I-type clamping sliders 4 to reset. The C-type clamping slider 3 and the I-type clamping slider 4 return to the standby state.

[0045] After the adjustment of the operation space is completed, the robot provides power through the power interface 8 to input, driving the external hexagonal bolt tool to rotate as a whole to complete the screwing of the external hexagonal bolt.

[0046] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-specification hexagonal socket bolt screwing tool characterized by: It includes rack (1), central screwing rotating wheel (2), slide rail (5), motor (6), shell (7) and multiple outer diameter adjusting assemblies, Wherein, the outer diameter adjusting assembly includes multiple C-shaped clamping sliding blocks (3) and multiple I-shaped clamping sliding blocks (4), and the multiple outer diameter adjusting assemblies are arranged in a ring array manner; The shell (7) is a cylindrical shell, the motor (6) is installed in the shell (7), and the output shaft of the motor (6) extends out of the shell (7), the upper part of the central screwing rotating wheel (2) is connected with the output shaft of the motor (6), the bottom end face of the central screwing rotating wheel (2) is machined with a driving thread (21), the upper part of the rack (1) is connected with the outer side wall of the shell (7), and the lower part of the rack (1) is inserted into the horizontally arranged slide rail (5), The multiple C-shaped clamping sliding blocks (3) are slidably installed in the slide rail (5) in a ring array manner, a hollow portion of each C-shaped clamping sliding block (3) is installed with an I-shaped clamping sliding block (4), and the I-shaped clamping sliding block (4) is slidably arranged on the slide rail (5), the upper end faces of the C-shaped clamping sliding block (3) and the I-shaped clamping sliding block (4) are respectively machined with a C-shaped driven thread (31) and an I-shaped driven thread (41), the driving thread (21) is threadedly connected with the C-shaped driven thread (31) and the I-shaped driven thread (41), and under the rotation of the central screwing rotating wheel (2), the I-shaped clamping sliding block (4) moves in the C-shaped clamping sliding block (3), or the I-shaped clamping sliding block (4) and the C-shaped clamping sliding block (3) move simultaneously, so that the multiple I-shaped clamping sliding blocks (4) and / or C-shaped clamping sliding blocks (3) move simultaneously towards the center of the slide rail (5) or away from the center of the slide rail (5); The central screwing rotating wheel (2) is a circular truncated cone rotating wheel, the central screwing rotating wheel (2) includes an upper connecting seat (2-1), a lower threaded seat (2-2) and multiple rod bodies (2-3), the upper connecting seat (2-1) is key connected with the output shaft of the motor (6), the lower threaded seat (2-2) is installed in parallel and coaxially below the upper connecting seat (2-1), one end of each of the multiple rod bodies (2-3) is connected with the upper connecting seat (2-1), and the other end of each of the multiple rod bodies (2-3) is connected with the lower threaded seat (2-2).

2. A multi-specification double hexagonal bolt driver according to claim 1, wherein: The rack (1) includes multiple connecting rods (1-1), one end of each of the multiple connecting rods (1-1) is detachably installed on the outer side wall of the shell (7), and the other end of each of the multiple connecting rods (1-1) is first inclined downward and outward, then continues to extend downward and finally back into the slide rail (5).

3. A multi-specification double hexagonal bolt driver according to claim 2, wherein: A sliding groove (3-1) is machined on the bottom end face of the C-shaped clamping sliding block (3), the open side end face of the C-shaped clamping sliding block (3) is a C-shaped contact surface (33), and one recess (32) is respectively machined on the inner end face of the open side of the C-shaped clamping sliding block (3).

4. A multi-specification double hexagonal bolt driver according to claim 3, wherein: The helical tooth shape of the driving thread (21) is consistent with that of the C-shaped driven thread (31) and the I-shaped driven thread (41).

5. A multi-specification double hexagonal bolt driver according to claim 4, wherein: The machining planes of the C-shaped driven thread (31) and the I-shaped driven thread (41) are the same plane, and the helical lines are consistent.

6. A multi-specification double hexagonal bolt driver according to claim 5, wherein: The radial machining number of the C-shaped driven thread (31) is less than that of the I-shaped driven thread (41).

7. A multi-specification double hexagonal bolt driver according to claim 6, wherein: The slide rail (5) comprises an upper mounting plate (5-1), a lower mounting plate (5-2), a plurality of groups of limiting columns (5-3) and a plurality of slide ways (5-4), the upper mounting plate (5-1) and the lower mounting plate (5-2) are arranged in parallel from top to bottom, the plurality of groups of limiting columns (5-3) are installed between the upper mounting plate (5-1) and the lower mounting plate (5-2) in a ring array mode, and one slide way (5-4) is installed in each group of limiting columns (5-3).

8. A multi-specification double hexagonal bolt driver according to claim 7, wherein: The upper portion of the shell (7) is processed with a power interface (8).

9. A multi-specification hexagonal socket head cap screw driving tool as claimed in claim 1 or 8 wherein: The number of the outer diameter adjusting assemblies is 3.

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