Multifunctional boring cutter

Abstract

The utility model relates to a multifunctional boring cutter which comprises a main shaft, a main body and a connecting mechanism, the main body is arranged on the main shaft through the connecting mechanism, the multifunctional boring cutter further comprises a machining mechanism, and the machining mechanism comprises an outer circle boring assembly, an inner circle boring assembly, an inner chamfering assembly and an outer chamfering assembly. The outer circle boring assembly, the inner circle boring assembly, the inner chamfering assembly and the outer chamfering assembly are all arranged at the end, away from the main shaft, of the main body. The machining method has the effect of improving the machining efficiency.

Description

Technical Field

[0001] This application relates to the technical field of workpiece machining, and in particular to a multi-functional boring tool. Background Technology

[0002] A boring bar is a tool used for machining holes, typically for boring various types of holes, such as cylindrical holes, tapered holes, and stepped holes. It features high precision, high efficiency, and high rigidity, and can meet the needs of machining various complex holes.

[0003] Currently, Chinese patent CN106392109A discloses a double-edged boring tool and a double-edged boring tool holder. The double-edged boring tool is equipped with a tool adjustment mechanism, which includes a transmission rod unit. The two transmission rods of equal length in the transmission rod unit are V-shaped hinged together. The hinged end forms a linear input end, and the other ends of the two transmission rods respectively form linear output ends that are connected to the first tool body and the second tool body. The drive mechanism is connected to the linear input end.

[0004] After the workpiece is machined with a double-edged boring tool, the hole needs to be chamfered. Therefore, the workpiece with the hole completed needs to be transferred to the chamfering equipment for chamfering. Since the transfer of the workpiece requires a certain amount of transfer time, the overall processing time of the workpiece is longer, resulting in relatively low processing efficiency. Utility Model Content

[0005] To improve processing efficiency, this application provides a multi-functional boring tool.

[0006] This application provides a multi-functional boring tool, which adopts the following technical solution:

[0007] A multi-functional boring tool includes a spindle, a body, and a connecting mechanism. The body is mounted on the spindle via the connecting mechanism. The tool also includes a machining mechanism, which comprises an outer diameter boring assembly, an inner diameter boring assembly, an inner chamfering assembly, and an outer chamfering assembly. The outer diameter boring assembly, the inner diameter boring assembly, the inner chamfering assembly, and the outer chamfering assembly are all located at the end of the body away from the spindle.

[0008] By adopting the above technical solution, the main body with the machining mechanism is installed on the spindle. When the spindle rotates, it will drive the main body to rotate. The outer and inner boring components on the main body will perform boring operations on the workpiece, and the inner and outer chamfering components will perform chamfering operations on the bored holes. Therefore, the machining mechanism can reduce the workpiece transfer time, thereby shortening the overall workpiece processing time and improving the overall processing efficiency.

[0009] Optionally, the outer diameter boring assembly, the inner diameter boring assembly, the inner chamfering assembly, and the outer chamfering assembly each include a mounting block, a machining tool, a first mounting bolt, and a second mounting bolt. The machining tool has a first through hole, and the mounting block has a first threaded hole. The first mounting bolt passes through the first through hole and is threadedly connected to the first threaded hole. The mounting block has a second through hole, and the main body has a second threaded hole. The second mounting bolt passes through the second through hole and is threadedly connected to the second threaded hole. The number of the mounting block and the machining tool in the outer diameter boring assembly and the inner diameter boring assembly are both two.

[0010] By adopting the above technical solution, the machining tool is first brought into contact with the mounting block, and then the first mounting bolt is threaded through the first through hole and connected to the first threaded hole to install the machining tool on the first mounting block; then the mounting block is brought into contact with the main body, and the second mounting bolt is threaded through the second through hole and connected to the second threaded hole to install the mounting block on the main body. In this way, when the spindle rotates, the main body will drive the mounting block to rotate, and the mounting block will drive the machining tool to rotate.

[0011] Optionally, the main body is provided with a mounting slot for placing the mounting block.

[0012] By adopting the above technical solution, the installation slot can facilitate the positioning of the installation block, allowing the installation block to be installed in the appropriate position of the main body.

[0013] Optionally, the connecting mechanism includes a first positioning block and a connecting bolt. The first positioning block is disposed on the main shaft, and the main body has a first positioning groove that engages with the first positioning block. The main body has a clearance groove at one end near the main shaft, and the main body has a third through hole communicating with the clearance groove. The main shaft has a third threaded hole, and the connecting bolt passes through the third through hole and is threadedly connected to the third threaded hole.

[0014] By adopting the above technical solution, the first positioning block is engaged with the first positioning groove and the main shaft abuts against the main body. Then, the connecting bolt passes through the third through hole and is threaded into the third threaded hole to achieve the connection between the main shaft and the main body. The provided clearance groove can not only reduce the weight of the main body, but also reduce the phenomenon that the presence of the connecting bolt affects the rotation of the main body.

[0015] Optionally, a second positioning block is provided on the main shaft, and a second positioning groove is provided on the main body to engage with the second positioning block.

[0016] By adopting the above technical solution, the second positioning block is engaged with the second positioning groove, which not only reduces the phenomenon of the first positioning block rotating relative to the first positioning groove, but also allows the third through hole to be aligned with the third threaded hole, facilitating the installation of the connecting bolts.

[0017] Optionally, the main body is provided with a balancing mechanism, which includes a balancing block and a first fixing bolt. A placement groove is provided on the side wall of the main body, and the balancing block is located in the placement groove. A fourth through hole is provided on the balancing block, and a fourth threaded hole is provided on the main body. The first fixing bolt passes through the fourth through hole and is threadedly connected to the fourth threaded hole.

[0018] By adopting the above technical solution, because the mounting blocks are positioned differently on the main body, the main body will shake when the spindle drives the main body to rotate, affecting the processing quality of the workpiece. Therefore, as needed, the balance block is first placed in the placement groove, and then the first fixing bolt is threaded through the fourth through hole and connected to the fourth threaded hole. The set balancing mechanism can balance the main body and reduce the shaking phenomenon when the main body rotates, thereby improving the processing quality of the product.

[0019] Optionally, the balance block includes a cylindrical block, a stacked sleeve, and a reinforcing bolt. The fourth through hole is formed on the cylindrical block, and an external thread is provided on the outer side wall of the cylindrical block. A fifth threaded hole is formed on the stacked sleeve, which is threadedly connected to the external thread. A sixth threaded hole is formed on the stacked sleeve, which communicates with the fifth threaded hole. The reinforcing bolt is threadedly connected to the sixth threaded hole and can abut against the external thread. The external thread is also provided on the outer side wall of the stacked sleeve.

[0020] By adopting the above technical solution, depending on the balance weight, one can simply select and install the cylindrical block into the placement groove, or connect the threaded hole on the stacking sleeve to the external thread on the cylindrical block, install the stacking sleeve onto the cylindrical block, and then rotate the reinforcing bolt to tighten the external thread before installing the cylindrical block into the placement groove. Moreover, because the side wall of the stacking sleeve also has external threads that connect to the fifth threaded hole, an appropriate number of stacking sleeves can be installed on the cylindrical block as needed. Therefore, the assembleable balance block can improve its applicability.

[0021] Optionally, the cylindrical block is provided with a limiting component, the limiting component including a limiting block, a locking block, and an assembly bolt. The cylindrical block has a locking groove, and the locking block engages with the locking groove. The limiting block is disposed on the locking block, and the stacking sleeve can abut against the limiting block. The limiting block has a fifth through hole, the locking block has a sixth through hole, and the cylindrical block has a seventh threaded hole. The assembly bolt passes through the fifth through hole and the sixth through hole and is threadedly connected to the seventh threaded hole.

[0022] By adopting the above technical solution, the card block is first engaged with the card slot, and the limiting block is made to abut against the cylindrical block. Then, the assembly bolt is threaded through the fifth and sixth through holes and the seventh threaded hole to install the limiting block onto the cylindrical block. Then, the superimposed sleeve is installed on the cylindrical block. Before the bolt abuts against the cylindrical block, the superimposed sleeve abuts against the limiting block. This can reduce the phenomenon of misalignment of multiple superimposed sleeves when there are multiple superimposed sleeves.

[0023] Optionally, the main body is provided with a covering assembly, the covering assembly including a covering plate and a second fixing bolt, the covering plate abutting against the main body and covering the placement groove, the covering plate having a seventh through hole, the main body having an eighth threaded hole, and the second fixing bolt passing through the seventh through hole and threadedly connected to the eighth threaded hole.

[0024] By adopting the above technical solution, the cover plate is placed on the main body and covers the placement groove. Then, the second fixing bolt is threaded through the seventh through hole and the eighth through hole. This can reduce the phenomenon of processing debris entering the placement groove.

[0025] Optionally, the main body is provided with a weight-reducing groove.

[0026] By adopting the above technical solution, the weight-reducing groove can make the main body lighter.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The machining mechanism can reduce the workpiece transfer time, thereby shortening the overall workpiece processing time and improving the overall processing efficiency;

[0029] 2. The balancing mechanism can balance the main body, reducing swaying when the main body rotates, thereby improving the processing quality of the product. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the multi-functional boring tool in the embodiments of this application;

[0031] Figure 2 This is a schematic diagram of the connecting mechanism in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the reinforcement mechanism in the embodiments of this application;

[0033] Figure 4 This is a schematic diagram of the structure of the inner circle boring hole assembly in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram of the balancing mechanism in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram of the structure of the balance block in an embodiment of this application.

[0036] Reference numerals: 1. Spindle; 2. Main body; 21. Mounting groove; 22. First positioning groove; 23. Clearance groove; 24. Second positioning groove; 25. Weight reduction groove; 3. Connecting mechanism; 31. First positioning block; 32. Connecting bolt; 33. Second positioning block; 4. Machining mechanism; 41. External boring assembly; 42. Internal boring assembly; 421. Mounting block; 422. Machining tool; 423. First mounting bolt; 424. Second mounting bolt; 43. Internal chamfering assembly; 44. External chamfering assembly; 5. Balancing mechanism; 51, Balancing block; 511, Cylindrical block; 5111, Fourth through hole; 5112, Slot; 512, Stacking sleeve; 5121, Fifth threaded hole; 513, Reinforcing bolt; 514, External thread; 52, First fixing bolt; 53, Limiting component; 531, Limiting block; 532, Locking block; 533, Assembly bolt; 6, Covering component; 61, Cover plate; 62, Second fixing bolt; 7, Reinforcing mechanism; 71, Reinforcing block; 72, Rotating shaft; 73, Gear; 74, Rack. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] This application discloses a multi-functional boring tool.

[0039] refer to Figure 1 A multi-functional boring tool includes a spindle 1, a main body 2 mounted on the spindle 1, and a connecting mechanism 3 connected to the main body 2 on the spindle 1; a machining mechanism 4 is mounted on the main body 2. The main body 2 is formed from aerospace aluminum and has a weight-reducing groove 25 formed on it.

[0040] refer to Figure 1 and Figure 2 The main body 2 has a first positioning groove 22 at its center near the end of the spindle 1. The connecting mechanism 3 includes a cylindrical first positioning block 31 fixedly connected to the spindle 1, which engages with the first positioning groove 22. Multiple second positioning blocks 33 are fixedly connected to the spindle 1, surrounding the first positioning block 31, and each second positioning block 33 is shorter than the first positioning block 31. Multiple second positioning grooves 24 are provided on the main body 2, and the second positioning blocks 33 can engage with these grooves. A clearance groove 23 is provided on the side wall of the main body 2 near the end of the spindle 1. A third through hole communicating with the clearance groove 23 is provided on the main body 2. A third threaded hole is provided on the spindle 1. A connecting bolt 32 is provided on the main body 2, passing through the third through hole and threadedly connected to the third threaded hole on the spindle 1.

[0041] First, place the end of the first positioning block 31 away from the spindle 1 into the first positioning groove 22 of the main body 2. Then, move the main body 2 or the spindle 1 so that the second positioning block 33 enters the second positioning groove 24 of the main body 2. When the second positioning block 33 is completely located in the second positioning groove 24, the first positioning block 31 will be completely located in the first positioning groove 22. At this time, the axis of the third through hole on the main body 2 coincides with the axis of the third threaded hole on the spindle 1, and the spindle 1 abuts against the main body 2. Finally, thread the connecting bolt 32 through the third through hole on the main body 2 and thread it into the third threaded hole on the spindle 1.

[0042] Reference 2 and Figure 3 The main body 2 has an adjustment groove communicating with the first positioning groove 22 and an adjustment hole communicating with the adjustment groove. The main body 2 is provided with a reinforcement mechanism 7, which includes a reinforcement block 71 slidably connected in the adjustment groove. The first positioning block 31 has a reinforcement groove that engages with the reinforcement block 71. A rotating shaft 72 is rotatably connected in the adjustment hole of the main body 2. One end of the rotating shaft 72 is located in the adjustment groove. A gear 73 is keyed to the rotating shaft 72 located in the adjustment groove. A rack 74 that meshes with the gear 73 is integrally provided on the reinforcement block 71.

[0043] When the connecting bolt 32 is threaded into the third threaded hole, the rotating shaft 72 rotates. The rotating shaft 72 drives the gear 73 to rotate, the gear 73 drives the rack 74 to move, and the rack 74 drives the reinforcing block 71 to move towards the first positioning block 31, so that the reinforcing block 71 engages with the reinforcing groove on the first positioning block 31, thereby improving the stability when the main body 2 and the main shaft 1 are connected.

[0044] refer to Figure 1 and Figure 4The machining mechanism 4 includes an outer round boring assembly 41, an inner round boring assembly 42, an inner chamfering assembly 43, and an outer chamfering assembly 44, which are disposed at one end of the main body 2 away from the spindle 1. The outer round boring assembly 41, the inner round boring assembly 42, the inner chamfering assembly 43, and the outer chamfering assembly 44 have the same structure. A mounting groove 21 is provided on the main body 2. The outer circle boring assembly 41, the inner circle boring assembly 42, the inner chamfering assembly 43, and the outer chamfering assembly 44 all include a mounting block 421 placed in the mounting groove 21. The mounting block 421 has a second through hole, and the main body 2 has a second threaded hole. A second mounting bolt 424 is provided on the mounting block 421. The second mounting bolt 424 passes through the second through hole on the mounting block 421 and is threadedly connected to the second threaded hole on the main body 2. A machining tool 422 is provided on the mounting block 421. The machining tool 422 has a first through hole, and the mounting block 421 has a first threaded hole. A first mounting bolt 423 is provided on the machining tool 422. The first mounting bolt 423 passes through the first through hole on the machining tool 422 and is threadedly connected to the first threaded hole on the mounting block 421. In this embodiment, the machining cutters 422 in both the outer and inner boring assembly 41 are boring cutters, and the number of mounting blocks 421 and machining cutters 422 in both the outer and inner boring assembly 41 and 422 is two. The distance between the two machining cutters 422 in the outer boring assembly 41 is greater than the distance between the two machining cutters 422 in the inner boring assembly 42. The line connecting the two machining cutters 422 in the outer boring assembly 41 intersects the line connecting the two machining cutters 422 in the inner boring assembly 42. Both the inner chamfering assembly 43 and the outer chamfering assembly 44 have chamfering cutters 422. The inner chamfering assembly 43 and the outer chamfering assembly 44 each have one mounting block 421 and one cutting cutter 422. The cutting cutter 422 in the inner chamfering assembly 43 is for the hole bored by the inner round boring assembly 42, and the outer chamfering assembly 44 is for the hole bored by the outer round boring assembly 41.

[0045] refer to Figure 5 and Figure 6 The main body 2 has multiple placement slots on its side wall, in which a balancing mechanism 5 can be placed. The balancing mechanism 5 includes a balancing block 51, which includes a cylindrical block 511. The cylindrical block 511 has a fourth through hole 5111. The main body 2 has a fourth threaded hole that communicates with the placement slot. The cylindrical block 511 is provided with a first fixing bolt 52, which passes through the fourth through hole 5111 on the cylindrical block 511 and is threadedly connected to the fourth threaded hole on the main body 2.

[0046] An external thread 514 is fixedly connected to the peripheral wall of the cylindrical block 511. A stacking sleeve 512 is provided on the cylindrical block 511, and a fifth threaded hole 5121 is formed on the stacking sleeve 512, which is threadedly connected to the external thread 514. A sixth threaded hole is opened on the stacking sleeve 512, which communicates with the fifth threaded hole 5121 and drives the movement. The axis of the sixth threaded hole is perpendicular to the axis of the fifth threaded hole 5121. A reinforcing bolt 513 is provided on the stacking sleeve 512, which is threadedly connected to the sixth threaded hole and can abut against the external thread 514. The same external thread 514 is also fixedly connected to the outer wall of the stacking sleeve 512, so that multiple stacking sleeves 512 can be stacked on the cylindrical block 511 as needed.

[0047] A slot 5112 is provided on the cylindrical block 511. A limiting component 53 is provided on the cylindrical block 511. The limiting component 53 includes a locking block 532 that engages with the slot 5112. A ring-shaped limiting block 531 is fixedly connected to the locking block 532. A fifth through hole is provided on the limiting block 531. A sixth through hole communicating with the fifth through hole is provided on the locking block 532. A seventh threaded hole communicating with the slot 5112 is provided on the cylindrical block 511. An assembly bolt 533 is provided on the limiting block 531. The assembly bolt 533 passes through the fifth through hole on the limiting block 531 and the sixth through hole on the locking block 532 and is then threadedly connected to the seventh threaded hole on the cylindrical block 511.

[0048] First, engage the locking block 532 with the locking groove 5112 on the cylindrical block 511, and make the limiting block 531 abut against the cylindrical block 511. Then, make the assembly bolt 533 pass through the fifth through hole on the limiting block 531 and the sixth through hole on the locking block 532, and then thread it into the seventh threaded hole on the cylindrical block 511. Next, make the fifth threaded hole 5121 on the stacking sleeve 512 threaded into the external thread 514 on the cylindrical block 511, and make the stacking sleeve 512 abut against the limiting block 531. Then, rotate the reinforcing bolt 513 so that the reinforcing bolt 513 abuts against the external thread 514 on the cylindrical block 511.

[0049] Then, the cylindrical block 511 with the limiting block 531 and the stacking sleeve 512 is placed into the placement groove of the main body 2, and then the first fixing bolt 52 is threaded through the fourth through hole 5111 on the cylindrical block 511 and threadedly connected to the fourth threaded hole on the main body 2.

[0050] refer to Figure 5 and Figure 6The main body 2 has a countersunk hole that communicates with the placement groove. The main body 2 is provided with a cover assembly 6. The cover assembly 6 includes a cover plate 61 that is snapped into the countersunk hole and covers the placement groove. The cover plate 61 has a seventh through hole and the main body 2 has an eighth threaded hole that communicates with the countersunk hole. The cover plate 61 is provided with a second fixing bolt 62, which passes through the seventh through hole on the cover plate 61 and the eighth threaded hole on the main body 2 and is threadedly connected.

[0051] After the cylindrical block 511 is connected to the spindle 1, the cover plate 61 is engaged with the countersunk hole on the main body 2, and then the second fixing bolt 62 is threaded through the seventh through hole on the cover plate 61 and the eighth threaded hole on the main body 2.

[0052] The implementation principle of a multi-functional boring tool according to an embodiment of this application is as follows: First, the machining tool 422 is installed on the mounting block 421, and then the mounting block 421 is installed on the main body 2; then the main body 2 is installed on the spindle 1. At this time, the balance block 51 is not installed in the mounting groove 21 of the main body 2, and the cover plate 61 is connected to the main body 2.

[0053] When the spindle 1 rotates, the spindle 1 drives the main body 2 to rotate, and the machining tool 422 on the main body 2 will rotate. When the main body 2 shakes while the spindle 1 is rotating, the cylindrical block 511 is installed in the placement groove, and an appropriate number of stacking sleeves 512 are installed on the cylindrical block 511 to balance the force on the rotating main body 2, thereby reducing the shaking phenomenon.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multifunctional boring tool comprising a spindle (1), a main body (2) and a connecting mechanism (3), said main body (2) being arranged on said spindle (1) by means of said connecting mechanism (3), characterized in that, Further comprising a machining mechanism (4), the machining mechanism (4) comprises an outer circle boring assembly (41), an inner circle boring assembly (42), an inner chamfer assembly (43) and an outer chamfer assembly (44), the outer circle boring assembly (41), the inner circle boring assembly (42), the inner chamfer assembly (43) and the outer chamfer assembly (44) are all arranged at one end of the main body (2) away from the main shaft (1).

2. The multi-functional boring tool according to claim 1, wherein The outer circle boring assembly (41), the inner circle boring assembly (42), the inner chamfer assembly (43) and the outer chamfer assembly (44) all comprise a mounting block (421), a machining tool (422), a first mounting bolt (423) and a second mounting bolt (424), the machining tool (422) is provided with a first through hole, the mounting block (421) is provided with a first threaded hole, and the first mounting bolt (423) is threadedly connected with the first threaded hole through the first through hole; the mounting block (421) is provided with a second through hole, the main body (2) is provided with a second threaded hole, and the second mounting bolt (424) is threadedly connected with the second threaded hole through the second through hole; the number of the mounting block (421) and the machining tool (422) in the outer circle boring assembly (41) and the inner circle boring assembly (42) is two.

3. The multi-functional boring tool according to claim 2, wherein The main body (2) is provided with a mounting groove (21) for placing the mounting block (421).

4. The multi-functional boring tool according to claim 1, wherein The connecting mechanism (3) comprises a first positioning block (31) and a connecting bolt (32), the first positioning block (31) is arranged on the main shaft (1), the main body (2) is provided with a first positioning groove (22) for clamping the first positioning block (31); the main body (2) is provided with an avoiding groove (23) at one end close to the main shaft (1), the main body (2) is provided with a third through hole communicating with the avoiding groove (23), the main shaft (1) is provided with a third threaded hole, and the connecting bolt (32) is threadedly connected with the third threaded hole through the third through hole.

5. The multi-functional boring tool according to claim 4, wherein The main shaft (1) is provided with a second positioning block (33), and the main body (2) is provided with a second positioning groove (24) for clamping the second positioning block (33).

6. The multi-functional boring tool according to claim 1, wherein The main body (2) is provided with a balancing mechanism (5), the balancing mechanism (5) comprises a balancing block (51) and a first fixing bolt (52), the main body (2) is provided with a placing groove on the side wall, the balancing block (51) is located in the placing groove, the balancing block (51) is provided with a fourth through hole (5111), the main body (2) is provided with a fourth threaded hole, and the first fixing bolt (52) is threadedly connected with the fourth threaded hole through the fourth through hole (5111).

7. The multi-functional boring tool according to claim 6, wherein The balance block (51) comprises a cylindrical block (511), a superposed sleeve (512) and a reinforcing bolt (513), the fourth through hole (5111) is arranged on the cylindrical block (511), and the outer side wall of the cylindrical block (511) is provided with an outer thread (514); the superposed sleeve (512) is formed with a fifth threaded hole (5121) which is threadedly connected with the outer thread (514), the superposed sleeve (512) is arranged with a sixth threaded hole which is communicated with the fifth threaded hole (5121), and the reinforcing bolt (513) is threadedly connected with the sixth threaded hole and can abut against the outer thread (514); the outer side wall of the superposed sleeve (512) is also provided with the outer thread (514).

8. The multi-functional boring tool according to claim 7, wherein The cylindrical block (511) is provided with a limiting assembly (53), the limiting assembly (53) comprises a limiting block (531), a clamping block (532) and an assembling bolt (533), the cylindrical block (511) is arranged with a clamping groove (5112), and the clamping block (532) is clamped with the clamping groove (5112); the limiting block (531) is arranged on the clamping block (532), and the superposed sleeve (512) can abut against the limiting block (531); the limiting block (531) is arranged with a fifth through hole, the clamping block (532) is arranged with a sixth through hole, the cylindrical block (511) is arranged with a seventh threaded hole, and the assembling bolt (533) is threadedly connected with the seventh threaded hole through the fifth through hole and the sixth through hole.

9. The multi-functional boring tool according to claim 6, wherein The main body (2) is provided with a covering assembly (6), the covering assembly (6) comprises a covering plate (61) and a second fixing bolt (62), the covering plate (61) abuts against the main body (2) and covers the placing groove, the covering plate (61) is arranged with a seventh through hole, the main body (2) is arranged with an eighth threaded hole, and the second fixing bolt (62) is threadedly connected with the eighth threaded hole through the seventh through hole.

10. The multi-functional boring tool according to claim 1, wherein The main body (2) is arranged with a weight-reducing groove (25).

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