Reamer with adjustable outer diameter based on spiral fluted disc

Abstract

The utility model relates to the technical field of cutters, and discloses an outer diameter adjustable reamer based on a spiral fluted disc, which comprises a cutter bar, a mounting cavity is arranged in the cutter bar, six blades are arranged on the side wall of the mounting cavity, and one end of each blade extends to the outer side of the cutter bar. According to the outer diameter adjustable reamer based on the spiral fluted disc, a first hand wheel is screwed to drive six blades to synchronously slide in the direction of the outer side of the reamer rod, so that the outer diameter of the reamer is adjusted, reaming operation can be conducted on forming holes with different hole diameters, and then the practicability is improved; and the two positioning blocks can be driven to move oppositely by screwing two second hand wheels, so that the two positioning blocks are moved out of the interiors of the two positioning grooves correspondingly, at the moment, the mounting block can be pulled out of the interior of the mounting frame, the reamer is dismounted, the purpose of convenient dismounting is achieved, and then the reamer can be rapidly replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a reamer with adjustable outer diameter based on a spiral toothed disc. Background Art

[0002] A reamer is a rotary tool with one or more teeth for removing a thin layer of metal from the surface of a machined hole. It is a rotary finishing tool with a straight edge or a spiral edge, and is mainly used for expanding or repairing holes. Since the reamer performs finishing on the inner surface of the formed hole, the amount of cutting is small and the machining accuracy requirement is usually higher than that of a drill. However, during use, the existing reamers have a fixed outer diameter, so they can only be used to expand holes with fixed apertures, which has poor practicality. Secondly, after being fixedly installed, most of the existing reamers are not easy to disassemble, which makes it inconvenient to quickly replace the reamer. Therefore, a reamer with an adjustable outer diameter based on a spiral toothed disc is proposed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an outer diameter adjustable reamer based on a spiral toothed disc, which has the advantages of adjustable outer diameter and easy disassembly, etc., and solves the problem that during use of existing reamers, since the outer diameter of the reamers is mostly fixed, only hole enlarging operations can be performed on processing holes with fixed apertures, resulting in poor practicality. Secondly, after the existing reamers are fixedly installed, most of them are difficult to disassemble, resulting in inconvenience in quick replacement of the reamers.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose of adjustable outer diameter and easy disassembly, the utility model provides the following technical solution: a reamer with adjustable outer diameter based on a spiral toothed disk, comprising a tool rod, a mounting cavity is arranged inside the tool rod, six blades are arranged on the side walls of the mounting cavity and one end of each blade extends to the outside of the tool rod, the bottoms of the six blades are movably connected to the inner bottom wall of the mounting cavity, a horizontal plate is arranged between the left and right sides of the inner wall of the mounting cavity and located above the blades, the inner top wall of the mounting cavity is provided with a mounting shaft with one end extending to the bottom of the horizontal plate, a circular disk is arranged at the bottom of the mounting shaft, spiral teeth are arranged at the bottom of the circular disk, and a sawtooth bar with one end meshing with the spiral teeth is arranged at the top of the six blades, a driving assembly with one end fixedly connected to the top of the horizontal plate and the other end extending to the right side of the tool rod is arranged on the outer side of the mounting shaft, a mounting block is arranged on the top of the tool rod, a mounting frame is arranged on the outer side of the mounting block, and a mounting frame is arranged on the top of the mounting frame A connecting block fits on the top of the mounting block, a connecting seat is provided on the top of the connecting block, and a U-shaped block is provided on the left and right sides of the mounting frame, a slider is provided between the upper and lower sides of the inner walls of the two U-shaped blocks, and a positioning groove is provided on the left and right sides of the mounting block, and the opposite sides of the two sliders are provided with positioning blocks with one end extending to the inside of the two positioning grooves respectively, and mounting plates are provided between the upper and lower sides of the inner walls of the two U-shaped blocks, respectively located on the opposite sides of the two sliders, and the opposite sides of the two mounting plates are provided with threaded rods with one end extending to the opposite sides of the two U-shaped blocks respectively, and traction blocks are provided between the upper and lower sides of the inner walls of the two U-shaped blocks, respectively threadedly connected to the outer sides of the two threaded rods, and traction rods are provided at the upper and lower ends of the opposite sides of the two traction blocks, one end of the traction rods on the left and right sides extends to the opposite sides of the two mounting plates and is fixedly connected to the opposite sides of the two sliders respectively, and second hand wheels are provided on the opposite sides of the two threaded rods.

[0007] Preferably, the drive assembly includes a worm gear, a worm gear located above the cross plate is fixedly mounted on the outer side of the mounting shaft, a fixed block is fixedly mounted on the top left side of the cross plate, a worm having one end meshing with the worm gear and the other end extending to the right side of the knife rod is movably mounted on the right side of the fixed block, and a first handwheel is fixedly mounted on the right side of the worm.

[0008] Preferably, a first bearing is fixedly mounted on the inner top wall of the mounting cavity, the mounting shaft is rotatably connected to the inner top wall of the mounting cavity via the first bearing, and a first mounting hole matching the mounting shaft is formed on the top of the transverse plate.

[0009] Preferably, a second bearing is fixedly mounted on the right side of the fixed block, and the worm is rotationally connected to the right side of the fixed block via the second bearing.

[0010] Preferably, third bearings are fixedly mounted on opposite sides of the two mounting plates, and the threaded rod is rotatably connected to the mounting plates via the third bearings.

[0011] Preferably, threaded holes respectively matched with the two threaded rods are provided inside the two traction blocks, and second mounting holes matched with the traction rods are provided on upper and lower sides inside the two mounting plates.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a reamer with adjustable outer diameter based on a spiral toothed disc, which has the following beneficial effects:

[0014] 1. The outer diameter adjustable reamer based on the spiral toothed disc drives the worm to rotate by turning the first hand wheel, and then drives the mounting shaft and the disc to rotate through the worm gear. Since the serrations on the top of the six blades are meshed with the spiral teeth on the bottom of the disc, the disc will drive the six blades to slide synchronously toward the outside of the tool rod through the spiral teeth and serrations during the rotation process, so as to adjust the outer diameter of the reamer, so that the forming holes with different apertures can be expanded, thereby improving the practicality.

[0015] 2. The outer diameter adjustable reamer based on the spiral toothed disk drives the two threaded rods to rotate by turning the two second hand wheels, thereby driving the two traction blocks to move away from each other, and then driving the two sliders and the two positioning blocks to move away from each other through the traction rods on the left and right sides, so that the two positioning blocks are respectively moved out from the inside of the two positioning grooves, thereby releasing the fixation between the mounting block and the mounting frame. At this time, the mounting block can be pulled out from the inside of the mounting frame to disassemble the reamer, thereby achieving the purpose of easy disassembly and facilitating the rapid replacement of the reamer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 It is a partial schematic diagram of a sawtooth bar of the utility model in a top view and cross-section;

[0019] Figure 4 This is a partial schematic diagram of a cutaway view of a blade of the utility model viewed from above;

[0020] Figure 5 For this utility model Figure 1 Enlarged view of point B in the middle.

[0021] In the figure: 1 tool bar, 2 mounting cavity, 3 blade, 4 cross plate, 5 mounting shaft, 6 disc, 7 spiral teeth, 8 sawtooth bar, 9 drive assembly, 91 worm gear, 92 fixed block, 93 worm, 94 first hand wheel, 10 mounting block, 11 mounting frame, 12 connecting block, 13 connecting seat, 14 U-shaped block, 15 slider, 16 positioning groove, 17 positioning block, 18 mounting plate, 19 threaded rod, 20 traction block, 21 traction rod, 22 second hand wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides a technical solution: a reamer with adjustable outer diameter based on a spiral toothed disk, comprising a shank 1, an installation cavity 2 is provided inside the shank 1, six blades 3 are movably installed on the side wall of the installation cavity 2, one end of each blade 3 extends to the outside of the shank 1, the bottoms of the six blades 3 are movably connected to the inner bottom wall of the installation cavity 2, the six blades 3 are distributed in a ring-shaped shape with equal distances, and the side wall of the installation cavity 2 is connected with six third installation holes opened on the shank 1 and adapted to the blades 3.

[0024] A horizontal plate 4 located above the blade 3 is fixedly installed between the left and right sides of the inner wall of the installation cavity 2, and a mounting shaft 5 with one end extending to the bottom of the horizontal plate 4 is movably installed on the inner top wall of the installation cavity 2. A first bearing is fixedly installed on the inner top wall of the installation cavity 2, and the mounting shaft 5 is rotatably connected to the inner top wall of the installation cavity 2 through the first bearing. A first mounting hole matched with the mounting shaft 5 is opened on the top of the horizontal plate 4, and a disc 6 is fixedly installed on the bottom of the installation shaft 5. A spiral tooth 7 is opened on the bottom of the disc 6, and a sawtooth bar 8 with one end meshing with the spiral tooth 7 is fixedly installed on the top of the six blades 3.

[0025] A driving assembly 9 is fixedly installed on the outer side of the mounting shaft 5, with one end fixedly connected to the top of the cross plate 4 and the other end extending to the right side of the tool rod 1. The driving assembly 9 includes a worm gear 91, and a worm gear 91 located above the cross plate 4 is fixedly installed on the outer side of the mounting shaft 5. A fixed block 92 is fixedly installed on the left side of the top of the cross plate 4, and a worm 93 is movably installed on the right side of the fixed block 92, with one end meshing with the worm gear 91 and the other end extending to the right side of the tool rod 1. A second bearing is fixedly installed on the right side of the fixed block 92, and the worm 93 is rotatably connected to the right side of the fixed block 92 through the second bearing, and a first hand wheel 94 is fixedly installed on the right side of the worm 93.

[0026] A mounting block 10 is fixedly installed on the top of the arbor 1, and a mounting frame 11 is movably installed on the outer side of the mounting block 10. A connecting block 12 with one end fitted with the top of the mounting block 10 is fixedly installed on the top of the mounting frame 11, and a connecting seat 13 is fixedly installed on the top of the connecting block 12. U-shaped blocks 14 are fixedly installed on the left and right sides of the mounting frame 11, and sliders 15 are movably installed between the upper and lower sides of the inner walls of the two U-shaped blocks 14. Positioning grooves 16 are provided on the left and right sides of the mounting block 10, and positioning blocks 17 with one end extending to the inside of the two positioning grooves 16 are fixedly installed on the opposite sides of the two sliders 15. Through holes compatible with the positioning blocks 17 are provided on the left and right sides of the mounting frame 11.

[0027] A mounting plate 18 located at the opposite sides of the two sliders 15 is fixedly installed between the upper and lower sides of the inner walls of the two U-shaped blocks 14, and a threaded rod 19 with one end extending to the opposite sides of the two U-shaped blocks 14 is movably installed on the opposite sides of the two mounting plates 18. A third bearing is fixedly installed on the opposite sides of the two mounting plates 18, and the threaded rod 19 is rotatably connected to the mounting plate 18 through the third bearing. A traction block 20 respectively threadedly connected to the outer sides of the two threaded rods 19 is movably installed between the upper and lower sides of the inner walls of the two U-shaped blocks 14, and a traction rod 21 is fixedly installed at the upper and lower ends of the opposite sides of the two traction blocks 20. One end of the traction rod 21 on the left and right sides extends to the opposite sides of the two mounting plates 18 and is fixedly connected to the opposite sides of the two sliders 15. Threaded holes respectively matched with the two threaded rods 19 are opened inside the two traction blocks 20, and second mounting holes matched with the traction rod 21 are opened on the upper and lower sides inside the two mounting plates 18, and second hand wheels 22 are fixedly installed on the opposite sides of the two threaded rods 19.

[0028] When in use, the connecting seat 13 is fixedly connected to the drilling machine to install the reamer. When the outer diameter of the reamer needs to be adjusted, the worm 93 can be driven to rotate by turning the first hand wheel 94, and then the mounting shaft 5 and the disc 6 can be driven to rotate by the worm wheel 91. Since the sawtooth strips 8 on the top of the six blades 3 are all engaged with the spiral teeth 7 at the bottom of the disc 6, the disc 6 will drive the six blades 3 to slide synchronously toward the outside direction of the tool rod 1 through the spiral teeth 7 and the sawtooth strips 8 during the rotation process, so as to adjust the outer diameter of the reamer, so that the forming holes with different apertures can be expanded, thereby improving the practicality. When the reamer is damaged and needs to be replaced, the two second hand wheels 22 can be turned to drive the two threaded rods 19 to rotate, so as to drive the two traction blocks 20 to move away from each other. Then, the two sliders 15 and the two positioning blocks 17 are driven to move in opposite directions through the traction rods 21 on the left and right sides, so that the two positioning blocks 17 are respectively moved out from the inside of the two positioning grooves 16, thereby releasing the fixation between the mounting block 10 and the mounting frame 11. At this time, the mounting block 10 can be pulled out from the inside of the mounting frame 11 to remove the reamer, and then the mounting block 10 on the new reamer is inserted into the inside of the mounting frame 11 until the top of the mounting block 10 fits with the bottom of the connecting block 12, and then the two second hand wheels 22 can be respectively turned in the opposite direction to drive the two positioning blocks 17 to move relative to each other, so that the two positioning blocks 17 are respectively moved to the inside of the two positioning grooves 16, thereby fixing the mounting block 10 and the mounting frame 11, and then completing the rapid replacement of the reamer to avoid affecting the reaming operation.

[0029] In summary, the outer diameter adjustable reamer based on the spiral toothed disk drives the worm 93 to rotate by turning the first hand wheel 94, and then drives the mounting shaft 5 and the disc 6 to rotate through the worm wheel 91. Since the sawtooth strips 8 on the tops of the six blades 3 are all engaged with the spiral teeth 7 at the bottom of the disc 6, the disc 6 will drive the six blades 3 to slide synchronously toward the outside direction of the tool rod 1 through the spiral teeth 7 and the sawtooth strips 8 during the rotation process, so as to adjust the outer diameter of the reamer, so that the forming holes with different apertures can be expanded, thereby improving the practicality. Secondly, the two second hand wheels 22 are turned to drive the two threaded rods 19 to rotate, so as to drive the two traction blocks 20 to move in opposite directions, and then through the left and right sides. The traction rod 21 drives the two sliders 15 and the two positioning blocks 17 to move back to each other, so that the two positioning blocks 17 are respectively moved out from the inside of the two positioning grooves 16, thereby releasing the fixation between the mounting block 10 and the mounting frame 11. At this time, the mounting block 10 can be pulled out from the inside of the mounting frame 11 to remove the reamer, thereby achieving the purpose of easy disassembly, and then facilitating the rapid replacement of the reamer, solving the problem that the existing reamer can only perform hole expansion operations on the processing holes of fixed apertures during use due to the fixed outer diameter of the reamer, which has poor practicality. Secondly, after the existing reamer is fixedly installed, it is mostly inconvenient to disassemble, resulting in inconvenience for rapid replacement of the reamer.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reamer with adjustable outer diameter based on a spiral toothed disc, comprising a shank (1), characterized in that: The knife bar (1) is provided with a mounting cavity (2) inside, and the side wall of the mounting cavity (2) is provided with six blades (3) with one end extending to the outside of the knife bar (1), and the bottoms of the six blades (3) are movably connected to the inner bottom wall of the mounting cavity (2), and a horizontal plate (4) located above the blades (3) is provided between the left and right sides of the inner wall of the mounting cavity (2), and the inner top wall of the mounting cavity (2) is provided with a mounting shaft (5) with one end extending to the bottom of the horizontal plate (4), and the bottom of the mounting shaft (5) is provided with a disk (6), and the bottom of the disk (6) is provided with The six blades (3) are provided with a sawtooth bar (8) at one end of which meshes with the spiral teeth (7), and the outer side of the mounting shaft (5) is provided with a driving assembly (9) having one end fixedly connected to the top of the horizontal plate (4) and the other end extending to the right side of the knife rod (1), and the top of the knife rod (1) is provided with a mounting block (10), and the outer side of the mounting block (10) is provided with a mounting frame (11), and the top of the mounting frame (11) is provided with a connecting block (12) having one end abutting with the top of the mounting block (10), and the top of the connecting block (12) is provided with a connecting seat (11). 3), U-shaped blocks (14) are arranged on both left and right sides of the installation frame (11), and sliders (15) are arranged between the upper and lower sides of the inner walls of the two U-shaped blocks (14), and positioning grooves (16) are arranged on both left and right sides of the installation block (10), and positioning blocks (17) are arranged on opposite sides of the two sliders (15), and one end of each positioning block (17) extends into the inside of the two positioning grooves (16), and mounting plates (18) are arranged between the upper and lower sides of the inner walls of the two U-shaped blocks (14), and the opposite sides of the two mounting plates (18) are A threaded rod (19) is provided with one end extending to the opposite sides of the two U-shaped blocks (14); a traction block (20) is provided between the upper and lower sides of the inner walls of the two U-shaped blocks (14) and is respectively threadedly connected to the outer sides of the two threaded rods (19); traction rods (21) are provided at the upper and lower ends of the opposite sides of the two traction blocks (20); one end of the traction rods (21) on the left and right sides extends to the opposite sides of the two mounting plates (18) and is respectively fixedly connected to the opposite sides of the two sliders (15); and a second hand wheel (22) is provided on the opposite sides of the two threaded rods (19).

2. The outer diameter adjustable reamer based on a spiral toothed disc according to claim 1, characterized in that: The driving assembly (9) comprises a worm wheel (91), the outer side of the mounting shaft (5) is fixedly mounted with a worm wheel (91) located above the transverse plate (4), the top left side of the transverse plate (4) is fixedly mounted with a fixed block (92), the right side of the fixed block (92) is movably mounted with a worm (93) having one end meshing with the worm wheel (91) and the other end extending to the right side of the knife rod (1), and the right side of the worm (93) is fixedly mounted with a first hand wheel (94).

3. The outer diameter adjustable reamer based on a spiral toothed disc according to claim 1, characterized in that: A first bearing is fixedly mounted on the inner top wall of the mounting cavity (2); the mounting shaft (5) is rotatably connected to the inner top wall of the mounting cavity (2) via the first bearing; and a first mounting hole matching the mounting shaft (5) is formed on the top of the transverse plate (4).

4. The outer diameter adjustable reamer based on a spiral toothed disc according to claim 2, characterized in that: A second bearing is fixedly mounted on the right side of the fixed block (92), and the worm (93) is rotationally connected to the right side of the fixed block (92) via the second bearing.

5. The outer diameter adjustable reamer based on a spiral toothed disc according to claim 1, characterized in that: A third bearing is fixedly mounted on opposite sides of the two mounting plates (18), and the threaded rod (19) is rotatably connected to the mounting plates (18) via the third bearing.

6. The outer diameter adjustable reamer based on a spiral toothed disc according to claim 1, characterized in that: The two traction blocks (20) are provided with threaded holes respectively matched with the two threaded rods (19), and the two mounting plates (18) are provided with second mounting holes matched with the traction rods (21) on both upper and lower sides.

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