Adjustable fine boring cutter body and fine boring cutter handle

Abstract

The invention belongs to the technical field of boring, and particularly relates to an adjustable fine boring cutter body and a fine boring cutter handle. A hole is formed in the fine boring cutter body; the side wall of the opening is in sliding connection with a tool bit; the side wall of the tool bit is fixedly connected with a driving lever; the deflector rod is in sliding fit with the open hole; a shifting rod is pushed, the position where the shifting rod passes through can be automatically reset through the elasticity of a sponge strip, a fixing block can extrude an inserting block, then the inserting block can be pushed through the elasticity of a first spring to be pushed into the side wall of an inserting hole, and then a tool bit can retract into a fine boring tool body; the length of the tool bit can be adjusted, the practicability of the tool bit is improved, the punching effect on different workpiece hole depths is improved, meanwhile, the flexibility of a sponge strip is utilized, a gap between a shifting rod and an open hole is fully blocked, and the dustproof and waterproof effects in the open hole can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of boring, in particular to an adjustable fine boring tool body and a fine boring tool handle. Background Art

[0002] The precision boring tool body and precision boring tool handle refer to the precision boring tool. The precision boring tool is a tool that ensures the accuracy of the aperture, position, roughness and roundness. It is widely used in the fields of aviation, aerospace, automobile, mold and energy. The precision boring tool body is mainly responsible for precision processing, and the precision boring tool handle is mainly responsible for connecting the tool body and the machine tool.

[0003] In the prior art, a fine boring tool handle is connected to a fine boring tool body, and then the fine boring tool handle is fixedly connected to a machine tool. After that, the machine tool can be operated, and the workpiece is processed by the fine boring tool body to achieve the purpose of drilling.

[0004] However, in the prior art, it is found that during the use of the fine boring blade, the length of the blade head needs to be adjusted due to the different drilling depths required for different workpieces. However, it is difficult to adjust the length of the blade head on the blade, which makes the adjustment more complicated, thereby increasing a certain amount of workload. For this reason, the present invention provides an adjustable fine boring blade and a fine boring handle. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the adjustable precision boring tool body and precision boring tool handle described in the present invention include a precision boring tool body; an opening is provided in the precision boring tool body; a cutter head is slidably connected to the side wall of the opening; a lever is fixedly connected to the side wall of the cutter head; the lever and the opening are in sliding cooperation; a fixed block is fixedly connected to the side wall of the lever; an insertion hole is provided on the side wall of the fixed block; a telescopic rod is fixedly connected to the side wall of the precision boring tool body; a first spring is sleeved on the outer side of the telescopic rod; the ends of the telescopic rod and the first spring are fixedly connected to the same insertion block; a pair of sponge strips are provided on the side wall of the opening; the sponge strips are symmetrically arranged on both sides of the opening and have the same structure; by pulling the lever, the length of the cutter head can be adjusted, the practicability of the cutter head can be improved, and the drilling effect on holes of different depths of workpieces can be increased.

[0007] Preferably, the side wall of the opening is fixedly connected to a piston cylinder; the inner side wall of the piston cylinder is slidably connected to a piston rod; the piston rod penetrates the piston cylinder wall body and is slidably connected thereto; a second spring is fixedly connected between the piston rod and the piston cylinder; the side wall of the piston cylinder is fixedly connected to a guide tube; the guide tube penetrates the fine boring tool body and the piston cylinder wall body and is fixedly connected thereto; by using the piston cylinder to blow air to the side wall of the cutter head, dust and impurities attached to the side wall of the cutter head can be cleaned, thereby increasing the service life of the cutter head.

[0008] Preferably, the side wall of the socket is fixed with a plurality of elastic sheets; the elastic sheets are evenly distributed on the side wall of the socket and have the same structure; the side wall of the elastic sheet is fixed with a rubber block; the side wall of the plug block is evenly provided with a plurality of grooves; the rubber block is pushed onto the side wall of the groove by the elastic sheet, which can prevent the plug block from shaking after being inserted into the side wall of the socket, improve the stability of the plug block, and at the same time increase the fixing effect of the plug block on the side wall of the socket.

[0009] Preferably, the side wall of the fine boring tool body is provided with a plurality of slide grooves; the slide grooves are evenly distributed on the side wall of the fine boring tool body and have the same structure; the side wall of the slide groove is slidably connected with a mounting block; the mounting block is fixedly connected to the sponge strip; the side wall of the mounting block is symmetrically provided with a pair of slots; the side wall of the slide groove is symmetrically fixed with a pair of first elastic plates; by inserting the mounting block into the side wall of the slide groove for fixing, the sponge strip can be conveniently disassembled and installed, thereby facilitating the disassembly and maintenance of the sponge strip.

[0010] Preferably, a delivery pipe is fixedly connected to the side wall of the guide pipe; the delivery pipe penetrates the wall of the guide pipe and is fixedly connected thereto; a plurality of air outlet holes are evenly opened on the side wall of the delivery pipe; by blowing gas out from the plurality of air outlet holes, the sufficient contact between the gas and the side wall of the cutter head can be increased, thereby improving the cleaning effect of dust and impurities attached to the side wall of the cutter head.

[0011] Preferably, the side wall of the guide tube is rotatably connected to a rotating rod; the side wall of the rotating rod is evenly fixed with a plurality of blades; the gas is dispersed by the blades, which can further increase the sufficient contact between the gas and the cutter head, and further improve the cleaning effect of dust and impurities attached to the side wall of the cutter head.

[0012] Preferably, a spring rod is fixedly connected to the side wall of the fixing block; a suction cup is fixedly connected to the end of the spring rod; the insertion block is adsorbed by the suction cup, which can further increase the fixing effect of the insertion block on the side wall of the socket and improve the fixing effect on the cutter head.

[0013] Preferably, a plurality of second elastic plates are evenly fixed to the side wall of the fine boring tool body; the second elastic plates correspond to the positions of the slide grooves; the second elastic plates can play a limiting role when the mounting block is inserted into the side wall of the slide groove, thereby improving the convenience of insertion.

[0014] Preferably, a sponge pad is fixedly connected to the side wall of the second elastic plate; the sponge pad can clean the dust attached to the side wall of the mounting block, thereby improving the smoothness of sliding between the slide groove and the mounting block.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The adjustable fine boring blade and fine boring handle described in the present invention can adjust the length of the cutter head by setting a lever and a sponge strip, thereby improving the practicality of the cutter head and increasing the drilling effect on holes of different workpiece depths. At the same time, the flexibility of the sponge strip is utilized to fully block the gap between the lever and the opening, thereby playing a role in dust and water prevention in the opening.

[0017] 2. The adjustable fine boring tool body and fine boring tool handle described in the present invention can clean the dust and impurities attached to the side wall of the tool head by means of the piston cylinder and the guide tube, and improve the service life of the tool head by blowing air to the side wall of the tool head through the piston cylinder, and at the same time can reduce the dust and impurities attached to the side wall of the tool head from entering the opening, thereby playing a dust-proof role in the fine boring tool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a stereogram in the present invention;

[0020] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0021] Figure 3 is a schematic structural diagram of the second spring in the present invention;

[0022] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0023] Figure 5 It is a schematic diagram of the structure of the air outlet in the present invention;

[0024] Figure 6 It is a schematic structural diagram of the first elastic plate in the present invention.

[0025] In the figure: 1. fine boring tool body; 11. opening; 12. cutter head; 13. lever; 14. fixing block; 15. socket; 16. telescopic rod; 17. first spring; 18. plug block; 19. sponge strip; 2. piston cylinder; 21. piston rod; 22. second spring; 23. guide tube; 3. elastic sheet; 31. rubber block; 32. groove; 4. slide groove; 41. mounting block; 42. card slot; 43. first elastic plate; 5. conveying pipe; 51. air outlet; 6. rotating rod; 61. blade; 7. spring rod; 71. suction cup; 8. second elastic plate; 9. sponge pad. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] like Figure 1-6 As shown, an adjustable fine boring tool body and fine boring tool handle described in an embodiment of the present invention include a fine boring tool body 1; an opening 11 is opened in the fine boring tool body 1; a cutter head 12 is slidably connected to the side wall of the opening 11; a lever 13 is fixedly connected to the side wall of the cutter head 12; the lever 13 and the opening 11 are in sliding cooperation; a fixing block 14 is fixedly connected to the side wall of the lever 13; a plug hole 15 is opened on the side wall of the fixing block 14; a telescopic rod 16 is fixedly connected to the side wall of the fine boring tool body 1; a first spring 17 is sleeved on the outer side of the telescopic rod 16; the ends of the telescopic rod 16 and the first spring 17 are fixedly connected to the same plug block 18; a pair of sponge strips 19 are provided on the side wall of the opening 11; the sponge strips 19 are symmetrically arranged on both sides of the opening 11 and have the same structure; when in use, the lever 13 is pushed to make the lever 13 slide on the side wall of the opening 11, and the sea can be adjusted as the lever 13 moves The sponge strip 19 is squeezed and stretched, and the place where the lever 13 passes can be automatically reset by utilizing the elasticity of the sponge strip 19. Then, when the fixed block 14 moves to the position of the plug block 18, the fixed block 14 will squeeze the plug block 18 and stretch it, so that the telescopic rod 16 and the first spring 17 can perform telescopic movement, and then the elasticity of the first spring 17 will be used to push the plug block 18 and push it into the side wall of the insertion hole 15 to make it stuck. Then, the cutter head 12 will also be retracted into the fine boring tool body 1, and the length of the cutter head 12 can be adjusted. In this process, by pulling the lever 13, the length of the cutter head 12 can be adjusted, the practicality of the cutter head 12 can be improved, and the drilling effect on the depth of holes in different workpieces can be increased. At the same time, the flexibility of the sponge strip 19 can be used to fully block the gap between the lever 13 and the opening 11, which can play a role in dust and water prevention in the opening 11.

[0028] like Figure 3 , 5As shown, the side wall of the opening 11 is fixedly connected to the piston cylinder 2; the inner side wall of the piston cylinder 2 is slidably connected to the piston rod 21; the piston rod 21 penetrates the wall of the piston cylinder 2 and is slidably connected thereto; a second spring 22 is fixedly connected between the piston rod 21 and the piston cylinder 2; a guide tube 23 is fixedly connected to the side wall of the piston cylinder 2; the guide tube 23 penetrates the fine boring tool body 1 and the wall of the piston cylinder 2 and is fixed thereto; when in use, when the cutter head 12 is retracted into the opening 11, the lever 13 will squeeze the piston rod 21, and at this time, the gas in the piston cylinder 2 will enter the guide tube 23, and finally The air is discharged to the outside, and the side wall of the cutter head 12 is blown to blow off the dust and impurities attached to the side wall of the cutter head 12 so that they will not be brought into the opening 11. When the cutter head 12 is extended again, the elasticity of the second spring 22 can be used to push the piston rod 21 to reset. In this process, the piston cylinder 2 is used to blow air to the side wall of the cutter head 12, which can clean the dust and impurities attached to the side wall of the cutter head 12, thereby increasing the service life of the cutter head 12. At the same time, the dust and impurities attached to the side wall of the cutter head 12 can be reduced from entering the opening 11, thereby preventing dust from entering the fine boring tool body 1.

[0029] like Figure 2 , 4 As shown, the side wall of the plug hole 15 is fixed with a plurality of elastic sheets 3; the elastic sheets 3 are evenly distributed on the side wall of the plug hole 15 and have the same structure; the side wall of the elastic sheet 3 is fixed with a rubber block 31; the side wall of the plug block 18 is evenly provided with a plurality of grooves 32; when in use, when the plug block 18 is inserted into the side wall of the plug hole 15, the plug block 18 can push open the elastic sheets 3 on both sides, and as the plug block 18 moves so that the grooves 32 correspond to the positions of the rubber blocks 31, the elasticity of the elastic sheet 3 can be used to push the rubber blocks 31 onto the side walls of the grooves 32, and a certain friction force will be generated by mutual contact. In this process, the rubber blocks 31 are pushed onto the side walls of the grooves 32 by the elastic sheet 3, which can play an anti-shaking role after the plug block 18 is inserted into the side wall of the plug hole 15, improve the stability of the plug block 18, and at the same time increase the fixing effect of the plug block 18 on the side wall of the plug hole 15, reducing the occurrence of shaking of the plug block 18 due to the elasticity of the first spring 17.

[0030] like Figure 2 , 4As shown in Figures 6 and 7, the side wall of the fine boring tool body 1 is provided with a plurality of slide grooves 4; the slide grooves 4 are evenly distributed on the side wall of the fine boring tool body 1 and have the same structure; the side wall of the slide groove 4 is slidably connected with a mounting block 41; the mounting block 41 is fixedly connected to the sponge strip 19; the side wall of the mounting block 41 is symmetrically provided with a pair of slots 42; the side wall of the slide groove 4 is symmetrically fixed with a pair of first elastic plates 43; when in use, after the sponge strip 19 is placed on the side wall of the opening 11, the mounting block 41 can be inserted into the side wall of the slide groove 4, at which time the mounting block 41 will press the first The elastic plate 43 is squeezed to stretch it open. When the slot 42 corresponds to the position of the first elastic plate 43, the elasticity of the first elastic plate 43 can be used to quickly reset it, so that it is stuck in the side wall of the slot 42 and squeezes the slide 4 to fix the sponge bar 19. In this process, the installation block 41 is inserted into the side wall of the slide 4 to fix it, which can facilitate the disassembly and installation of the sponge bar 19, improve the convenience of disassembly and maintenance of the sponge bar 19, and reduce the difficulty of disassembly and maintenance when the sponge bar 19 is torn and damaged after long-term use.

[0031] like Figure 1 , 3 As shown in Figure 5, the side wall of the guide tube 23 is fixedly connected with a delivery tube 5; the delivery tube 5 penetrates the wall of the guide tube 23 and is fixedly connected thereto; a plurality of air outlet holes 51 are evenly opened on the side wall of the delivery tube 5; when in use, when the air flow enters the guide tube 23 and is discharged to the outside, part of the gas will enter the delivery tube 5, and then be blown to the outside through the plurality of air outlet holes 51, so as to make it contact with the side wall of the cutter head 12. In this process, the gas is blown out from the plurality of air outlet holes 51, which can increase the sufficient contact effect between the gas and the side wall of the cutter head 12, improve the cleaning effect of the dust and impurities attached to the side wall of the cutter head 12, and reduce the occurrence of some dust and impurities being brought into the opening 11.

[0032] like Figure 5 As shown, the side wall of the guide tube 23 is rotatably connected to the rotating rod 6; the side wall of the rotating rod 6 is evenly fixed with a plurality of blades 61; when in use, when the gas is blown out to the outside through the guide tube 23, the gas will blow the blades 61, thereby driving the rotating rod 6 to rotate. At this time, the gas can be dispersed by the blades 61 to make it fully contact with the side wall of the cutter head 12. In this process, the gas is dispersed by the blades 61, which can further increase the full contact effect between the gas and the cutter head 12, and further improve the cleaning effect of dust and impurities attached to the side wall of the cutter head 12.

[0033] like Figure 4As shown, the side wall of the fixing block 14 is fixedly connected to a spring rod 7; the end of the spring rod 7 is fixedly connected to a suction cup 71; when in use, when the first spring 17 pushes the plug block 18 to be inserted into the side wall of the insertion hole 15, the plug block 18 will squeeze the suction cup 71, and at the same time, the elasticity of the spring rod 7 can be used to apply a certain reaction force to the suction cup 71, so that the suction cup 71 can be fully in contact with the side wall of the plug block 18, and the suction cup 71 can be used to generate a certain adsorption force on the side wall of the plug block 18. In this process, the plug block 18 is adsorbed by the suction cup 71, which can further increase the fixing effect of the plug block 18 on the side wall of the insertion hole 15, improve the fixing effect of the cutter head 12, and reduce the plug block 18 from slipping off the side wall of the insertion hole 15 due to accidental squeezing.

[0034] like Figure 2 , 4 As shown, the side wall of the fine boring tool body 1 is evenly fixed with multiple second elastic plates 8; the second elastic plates 8 correspond to the position of the slide slot 4; when in use, during the process of inserting the mounting block 41 into the side wall of the slide slot 4, the mounting block 41 will squeeze the second elastic plate 8, and the elasticity of the second elastic plate 8 will push the mounting block 41, and at the same time, the mounting block 41 will also slide along the side wall of the second elastic plate 8, so that the mounting block 41 can be quickly aligned with the position of the slide slot 4. In this process, the second elastic plate 8 can play a limiting role when the mounting block 41 is inserted into the side wall of the slide slot 4, thereby improving the convenience during insertion and reducing the difficulty in aligning the two, which makes the installation process more cumbersome.

[0035] like Figure 2 , 4 As shown, a sponge pad 9 is fixedly connected to the side wall of the second elastic plate 8; when in use, the elasticity of the second elastic plate 8 can make the sponge pad 9 fully contact with the side wall of the mounting block 41 and wipe the side wall of the mounting block 41. In this process, the sponge pad 9 can clean the dust attached to the side wall of the mounting block 41, improve the smoothness of the sliding between the slide groove 4 and the mounting block 41, and reduce the dust blocking between the two, thereby affecting the insertion effect of the mounting block 41.

[0036] During operation, the lever 13 is pushed to slide on the side wall of the opening 11. As the lever 13 moves, the sponge strip 19 can be squeezed and stretched open. The elasticity of the sponge strip 19 can automatically reset the place where the lever 13 passes. Then, when the fixed block 14 moves to the position of the plug block 18, the fixed block 14 will squeeze the plug block 18 and stretch it open, so that the telescopic rod 16 and the first spring 17 can perform telescopic movement. Then, the elasticity of the first spring 17 will push the plug block 18 and push it into the side wall of the insertion hole 15 to make it stuck. Then, the cutter head 12 will also be retracted into the fine boring tool body 1, so that the length of the cutter head 12 can be adjusted. When in use, when the cutter head 12 is retracted into the opening 11, , the lever 13 will squeeze the piston rod 21, and the gas in the piston cylinder 2 will enter the guide tube 23 and finally be discharged to the outside, blowing air to the side wall of the cutter head 12 to blow off the dust and impurities attached to the side wall of the cutter head 12 so that they will not be brought into the opening 11. When the cutter head 12 is extended again, the elasticity of the second spring 22 can be used to push the piston rod 21 to reset. When in use, when the plug block 18 is inserted into the side wall of the insertion hole 15, the plug block 18 can push open the elastic sheets 3 on both sides. As the plug block 18 moves to make the groove 32 correspond to the position of the rubber block 31, the elasticity of the elastic sheet 3 can be used to push the rubber block 31 onto the side wall of the groove 32, and a certain friction force will be generated by mutual contact. When in use, by putting the sponge strip 19 into After the side wall of the opening 11 is mounted, the mounting block 41 can be inserted into the side wall of the slide groove 4. At this time, the mounting block 41 will squeeze the first elastic plate 43 to open it. When the slot 42 corresponds to the position of the first elastic plate 43, the elasticity of the first elastic plate 43 can be used to quickly reset it, so that it is stuck in the side wall of the slot 42 and squeezes the slide groove 4 to fix the sponge strip 19. When in use, when the air flow enters the guide tube 23 and is discharged to the outside, part of the gas will enter the delivery pipe 5, and then blown out to the outside through a plurality of air outlet holes 51, so that it contacts the side wall of the cutter head 12. When in use, when the gas is blown out to the outside through the guide tube 23, the gas will blow the blade 61, thereby driving the rotating rod 6 to rotate. At this time, the blade 61 can The gas is dispersed so that it is in full contact with the side wall of the cutter head 12. When in use, when the first spring 17 pushes the plug block 18 to be inserted into the side wall of the insertion hole 15, the plug block 18 will squeeze the suction cup 71, and at the same time, the elasticity of the spring rod 7 can be used to apply a certain reaction force to the suction cup 71, so that the suction cup 71 can be in full contact with the side wall of the plug block 18, and the suction cup 71 can generate a certain adsorption force on the side wall of the plug block 18. When in use, during the process of inserting the mounting block 41 into the side wall of the slide groove 4, the mounting block 41 will squeeze the second elastic plate 8, and the elasticity of the second elastic plate 8 will push the mounting block 41, and at the same time, the mounting block 41 will slide along the side wall of the second elastic plate 8, so that the mounting block 41 can be quickly aligned with the position of the slide groove 4. When in use,The elasticity of the second elastic plate 8 can be used to make the sponge pad 9 fully contact the side wall of the mounting block 41 and wipe the side wall of the mounting block 41.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An adjustable fine boring tool body and fine boring tool handle, comprising a fine boring tool body (1); characterized in that: The fine boring tool body (1) is provided with an opening (11); a cutter head (12) is slidably connected to the side wall of the opening (11); a lever (13) is fixedly connected to the side wall of the cutter head (12); the lever (13) and the opening (11) are in sliding cooperation; a fixing block (14) is fixedly connected to the side wall of the lever (13); an insertion hole (15) is provided on the side wall of the fixing block (14); a telescopic rod (16) is fixedly connected to the side wall of the fine boring tool body (1); a first spring (17) is sleeved on the outer side of the telescopic rod (16); the ends of the telescopic rod (16) and the first spring (17) are fixedly connected to the same insertion block (18); a pair of sponge strips (19) are provided on the side wall of the opening (11); the sponge strips (19) are symmetrically arranged on both sides of the opening (11) and have the same structure.

2. The adjustable fine boring tool body and fine boring tool handle according to claim 1, characterized in that: The side wall of the opening (11) is fixedly connected to a piston cylinder (2); the inner side wall of the piston cylinder (2) is slidably connected to a piston rod (21); the piston rod (21) passes through the wall of the piston cylinder (2) and is slidably connected thereto; a second spring (22) is fixedly connected between the piston rod (21) and the piston cylinder (2); the side wall of the piston cylinder (2) is fixedly connected to a flow guide tube (23); the flow guide tube (23) passes through the fine boring tool body (1) and the wall of the piston cylinder (2) and is fixedly connected thereto.

3. The adjustable fine boring tool body and fine boring tool handle according to claim 1, characterized in that: The side wall of the insertion hole (15) is fixedly connected with a plurality of elastic sheets (3); the elastic sheets (3) are evenly distributed on the side wall of the insertion hole (15) and have the same structure; the side wall of the elastic sheet (3) is fixedly connected with a rubber block (31); and the side wall of the insertion block (18) is evenly provided with a plurality of grooves (32).

4. The adjustable fine boring tool body and fine boring tool handle according to claim 1, characterized in that: The side wall of the fine boring tool body (1) is provided with a plurality of slide grooves (4); the slide grooves (4) are evenly distributed on the side wall of the fine boring tool body (1) and have the same structure; the side wall of the slide groove (4) is slidably connected to a mounting block (41); the mounting block (41) is fixedly connected to the sponge strip (19); the side wall of the mounting block (41) is symmetrically provided with a pair of slots (42); and the side wall of the slide groove (4) is symmetrically fixedly connected to a pair of first elastic plates (43).

5. The adjustable fine boring tool body and fine boring tool handle according to claim 2, characterized in that: A delivery pipe (5) is fixedly connected to the side wall of the flow guide pipe (23); the delivery pipe (5) penetrates the wall of the flow guide pipe (23) and is fixedly connected thereto; and a plurality of air outlet holes (51) are evenly arranged on the side wall of the delivery pipe (5).

6. The adjustable fine boring tool body and fine boring tool handle according to claim 2, characterized in that: The side wall of the flow guide tube (23) is rotatably connected to a rotating rod (6); and a plurality of blades (61) are evenly fixedly connected to the side wall of the rotating rod (6).

7. The adjustable fine boring tool body and fine boring tool handle according to claim 6, characterized in that: A spring rod (7) is fixedly connected to the side wall of the fixing block (14); and a suction cup (71) is fixedly connected to the end of the spring rod (7).

8. The adjustable fine boring tool body and fine boring tool handle according to claim 4, characterized in that: A plurality of second elastic plates (8) are evenly fixedly connected to the side wall of the fine boring tool body (1); the second elastic plates (8) correspond to the positions of the slide grooves (4).

9. The adjustable fine boring tool body and fine boring tool handle according to claim 8, characterized in that: A sponge pad (9) is fixedly connected to the side wall of the second elastic plate (8).

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