Back boring type boring cutter

Abstract

The utility model discloses a back boring type boring cutter, which belongs to the technical field of boring cutters and comprises a boring bar, a stepped shaft is arranged on one side of the boring bar, a taper shank is arranged at the other end of the stepped shaft, a straight groove is arranged in the boring bar, a blade is arranged in the straight groove, the blade is connected with the boring bar through a fixing bolt, and a cleaning component is arranged at the lower end of the straight groove. Through the arrangement of the cleaning assembly, when waste chips accumulated in the straight groove are not easy to clean, the inside hexagonal bolt is screwed out of the first fixing hole, then the plugging block can be taken out of the cleaning opening of the boring rod, meanwhile, the clamping block is moved out of the clamping groove, the straight groove is in a penetrating state at the moment, an iron rod and the like can stretch into the straight groove, and the waste chips can be cleaned conveniently. Scraps accumulated in the straight groove are cleaned out of the straight groove from the cleaning opening, then the plugging block is installed in the cleaning opening, the interior of the straight groove is conveniently cleaned by arranging the cleaning assembly, and the situation that follow-up disassembly, assembly and replacement of the blade are affected by the scraps accumulated in the straight groove is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of boring tools, and in particular relates to a back-boring type boring tool. Background Art

[0002] Boring is generally considered to be an ideal processing method for machining precision holes on workpieces of various sizes and shapes. In order to meet the needs of continuously improving productivity, the design of boring tools is also constantly innovating and improving.

[0003] Chinese patent application No. 2011202728941 discloses a reverse boring tool, including a taper shank inserted into a machine tool, a stepped shaft, and a boring bar; the stepped shaft is arranged at the lower part of the taper shank; the boring bar is arranged at the lower part of the stepped shaft; the outer diameter of the boring bar is provided with through grooves symmetrically on the left and right; the boring bar is provided with straight grooves radially; a rotatable blade is arranged in the straight groove through a rotating shaft; the blade is fixed in the straight groove through bolts and nuts; the reverse boring tool of the utility model, when processing two holes with different apertures, first processes the hole with a smaller aperture, then puts the blade into the straight groove, fixes it through bolts and nuts, extends the boring bar into the processed hole, then releases the blade from the straight groove, fixes it through bolts and nuts, and reversely processes the hole with a larger aperture. The utility model has a simple structure and is easy to manufacture, and effectively improves the processing efficiency when processing two holes with different apertures.

[0004] When the above-mentioned patent uses a blade to bore holes, waste chips are easily accumulated inside the straight groove, which is inconvenient to clean the waste chips accumulated in the straight groove, affecting the subsequent disassembly, assembly and replacement of the blade. At the same time, when the original device performs boring work of different depths, it is not convenient to adjust the boring bar to different lengths. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a back-boring type boring tool, which has the characteristic of conveniently cleaning and discharging waste chips in a straight groove.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a back-boring type boring tool, comprising a boring bar, a stepped shaft is provided on one side of the boring bar, a tapered shank is provided on the other end of the stepped shaft, a straight groove is provided in the boring bar, a blade is provided in the straight groove, the blade and the boring bar are connected by a fixing bolt, and a cleaning assembly is provided at the lower end of the straight groove.

[0007] Preferably, the cleaning assembly includes a sealing block, a cleaning port, a clamping block, a hexagon socket bolt, a clamping slot, a fixing hole and a groove, wherein a cleaning port is provided at the lower end of the straight groove, a sealing block is provided in the cleaning port, clamping blocks are provided at both ends of the sealing block, a clamping slot corresponding to the clamping block is provided at the lower end of the boring bar, the clamping block and the boring bar are connected by a hexagon socket bolt, a fixing hole corresponding to the hexagon socket bolt is provided in the clamping slot, and a groove corresponding to the hexagon socket bolt is provided at the lower end of the clamping block.

[0008] Preferably, after the blocking block enters the cleaning port, the side of the blocking block is in close contact with the inner wall of the cleaning port, and after the clamping block enters the clamping slot, the side of the clamping block is in close contact with the inner wall of the clamping slot.

[0009] Preferably, the clamping block is provided with a through hole corresponding to the hexagon socket bolt, the clamping block and the blocking block are an integrated welded structure, and after the blocking block is installed, the side edge of the blocking block is flush with the side edge of the boring bar.

[0010] Preferably, a fixed column is provided at one end of the stepped shaft near the boring rod, and a sliding column is provided at one end of the boring rod near the fixed column. The sliding column and the fixed column are connected by a locking bolt, and a plurality of fixing holes corresponding to the locking bolts are provided at both ends of the sliding column. A sliding block is provided on one side of both ends of the sliding block, and a sliding groove corresponding to the sliding block is provided inside the fixed column.

[0011] Preferably, through holes are provided at positions corresponding to the fixing columns and locking bolts, the spacing between two adjacent fixing holes is the same, and the sliding column and the boring bar as well as the fixing column and the stepped shaft are spot welded.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a cleaning component. When the accumulated waste chips in the straight groove are difficult to clean, the hexagon socket bolt is screwed out from the fixing hole 1, and then the blocking block can be taken out from the cleaning port of the boring bar, and the card block is moved out of the card slot. At this time, the straight groove is in a through state, and an iron rod or the like can be used to extend into the straight groove to clean the accumulated waste chips in the straight groove out of the straight groove from the cleaning port, and then the blocking block can be installed into the cleaning port. The cleaning component is provided to facilitate cleaning of the inside of the straight groove, and avoid the accumulation of waste chips in the straight groove affecting the subsequent disassembly, assembly and replacement of the blade.

[0014] 2. The utility model sets a sliding column, and the locking bolt is screwed out from the second fixing hole of the sliding column. Then the sliding column can be pulled to slide in the fixing column. At the same time, the slider at one end of the sliding column slides in the sliding groove of the fixing column. After the sliding column drives the boring rod to move to an appropriate length, the locking bolt is screwed into the corresponding second fixing hole on the sliding column to achieve the effect of limiting and fixing the sliding column. By setting the sliding column, the boring rod can be adjusted to different lengths, which is convenient for the blade to perform boring work of different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a cutaway perspective view of the fixed column of the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the utility model blocking block when installed;

[0018] In the figure: 1. boring bar; 2. cleaning assembly; 21. blocking block; 22. cleaning port; 23. clamping block; 24. hexagon socket bolt; 25. clamping slot; 26. fixing hole 1; 27. groove; 3. tapered shank; 4. stepped shaft; 5. fixing column; 6. sliding column; 7. blade; 8. fixing bolt; 9. straight groove; 10. locking bolt; 11. fixing hole 2; 12. sliding block; 13. sliding slot. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1

[0021] See also Figure 1-3 The utility model provides the following technical solutions: a back-boring type boring tool, comprising a boring bar 1, a stepped shaft 4 is arranged on one side of the boring bar 1, a tapered handle 3 is arranged on the other end of the stepped shaft 4, a straight groove 9 is arranged in the boring bar 1, a blade 7 is arranged in the straight groove 9, the blade 7 is connected to the boring bar 1 by a fixing bolt 8, and a cleaning assembly 2 is arranged at the lower end of the straight groove 9.

[0022] Specifically, the cleaning assembly 2 includes a blocking block 21, a cleaning port 22, a clamping block 23, a hexagon socket bolt 24, a clamping groove 25, a fixing hole 26 and a groove 27, wherein a cleaning port 22 is provided at the lower end of the straight groove 9, a blocking block 21 is provided in the cleaning port 22, clamping blocks 23 are provided at both ends of the blocking block 21, a clamping groove 25 corresponding to the clamping block 23 is provided at the lower end of the boring bar 1, the clamping block 23 is connected to the boring bar 1 by a hexagon socket bolt 24, a fixing hole 26 corresponding to the hexagon socket bolt 24 is provided in the clamping groove 25, and a groove 27 corresponding to the hexagon socket bolt 24 is provided at the lower end of the clamping block 23.

[0023] By adopting the above technical scheme, when the accumulated waste chips in the straight groove 9 are difficult to clean, the hexagon socket bolt 24 is screwed out from the fixing hole 26, and then the blocking block 21 can be taken out from the cleaning port 22 of the boring bar 1, and the clamping block 23 is moved out from the clamping slot 25. At this time, the straight groove 9 is in a through state, and an iron rod or the like can be used to extend into the straight groove 9 to clean the accumulated waste chips in the straight groove 9 out of the straight groove 9 from the cleaning port 22, and then the blocking block 21 is installed into the cleaning port 22. By setting the cleaning component 2, it is convenient to clean the inside of the straight groove 9, so as to avoid the accumulation of waste chips in the straight groove 9 affecting the subsequent disassembly, assembly and replacement of the blade 7.

[0024] Specifically, after the blocking block 21 enters the cleaning port 22 , the side of the blocking block 21 is in close contact with the inner wall of the cleaning port 22 , and after the clamping block 23 enters the clamping slot 25 , the side of the clamping block 23 is in close contact with the inner wall of the clamping slot 25 .

[0025] By adopting the above technical solution, after the blocking block 21 is installed, the blocking block 21 and the clamping block 23 are more stable and less likely to shake.

[0026] Specifically, a through hole corresponding to the hexagon socket bolt 24 is provided in the clamping block 23 , and the clamping block 23 and the blocking block 21 are an integrated welded structure. After the blocking block 21 is installed, the side of the blocking block 21 is flush with the side of the boring bar 1 .

[0027] By adopting the above technical solution, the hexagon socket bolt 24 can pass through the clamping block 23 conveniently. After the blocking block 21 is installed, the side of the blocking block 21 is flush with the side of the boring bar 1 to avoid the side of the blocking block 21 protruding from the side of the boring bar 1.

[0028] When the present embodiment is used, when the back-boring boring tool is used, the device is installed in a suitable position, the blade 7 is fixed in the straight groove 9 of the boring bar 1 by the fixing bolt 8, and the boring work is performed by the blade 7. By setting the cleaning component 2, when the waste chips accumulated in the straight groove 9 are not easy to clean, the hexagon socket bolt 24 is screwed out from the fixing hole 26, and then the blocking block 21 can be taken out from the cleaning port 22 of the boring bar 1, and the clamping block 23 is moved out from the clamping slot 25. At this time, the straight groove 9 is in a through state, and an iron rod or the like can be used to extend into the straight groove 9, and the waste chips accumulated in the straight groove 9 are cleaned out of the straight groove 9 from the cleaning port 22, and then the blocking block 21 is installed in the cleaning port 22. By setting the cleaning component 2, it is convenient to clean the inside of the straight groove 9, and avoid the accumulation of waste chips in the straight groove 9 affecting the subsequent disassembly and replacement of the blade 7.

[0029] Example 2

[0030] The difference between this embodiment and embodiment 1 is that a fixed column 5 is provided at one end of the stepped shaft 4 close to the boring bar 1, a sliding column 6 is provided at one end of the boring bar 1 close to the fixed column 5, the sliding column 6 and the fixed column 5 are connected by a locking bolt 10, a plurality of fixing holes 11 corresponding to the locking bolts 10 are provided at both ends of the sliding column 6, a sliding block 12 is provided on one side of both ends of the sliding block 6, and a sliding groove 13 corresponding to the sliding block 12 is provided inside the fixed column 5.

[0031] By adopting the above technical solution, the locking bolt 10 is screwed out from the second fixing hole 11 of the sliding column 6, and then the sliding column 6 can be pulled to slide in the fixing column 5, and at the same time, the slider 12 at one end of the sliding column 6 slides in the sliding groove 13 of the fixing column 5. After the sliding column 6 drives the boring rod 1 to move to an appropriate length, the locking bolt 10 is screwed into the corresponding second fixing hole 11 on the sliding column 6 to achieve the effect of limiting and fixing the sliding column 6. By setting the sliding column 6, the boring rod 1 can be adjusted to different lengths, which is convenient for the blade 7 to perform boring work of different depths.

[0032] Specifically, through holes are provided at positions corresponding to the fixing column 5 and the locking bolt 10 , and the spacing between adjacent fixing holes 11 is the same. The sliding column 6 and the boring bar 1 as well as the fixing column 5 and the stepped shaft 4 are spot welded.

[0033] By adopting the above technical solution, it is convenient to screw the locking bolt 10 through the through hole on the fixing column 5 into the fixing hole 2 11 of the sliding column 6. Several fixing holes 2 11 can be evenly distributed. Spot welding makes the sliding column 6 and the boring bar 1 as well as the fixing column 5 and the stepped shaft 4 more sturdy and durable.

[0034] When this embodiment is used, by setting the sliding post 6, the locking bolt 10 is screwed out from the second fixing hole 11 of the sliding post 6, and then the sliding post 6 can be pulled to slide in the fixing post 5, and at the same time, the sliding block 12 at one end of the sliding post 6 slides in the sliding groove 13 of the fixing post 5. After the sliding post 6 drives the boring rod 1 to move to an appropriate length, the locking bolt 10 is screwed into the corresponding second fixing hole 11 on the sliding post 6 to achieve the effect of limiting and fixing the sliding post 6. By setting the sliding post 6, the boring rod 1 can be adjusted to different lengths, which is convenient for the blade 7 to perform boring work of different depths.

[0035] The structure and working principle of the boring bar 1, tapered shank 3, stepped shaft 4, blade 7, fixing bolt 8 and straight groove 9 in the utility model have been disclosed in a reverse boring tool disclosed in Chinese patent application No. 2011202728941. The working principle is that the blade 7 is fixed in the straight groove 9 of the boring bar 1 by the fixing bolt 8, and the boring work is performed by the blade 7.

[0036] Working principle and use process of the utility model: when the back-boring boring tool is used, the device is installed in a suitable position, the blade 7 is fixed in the straight groove 9 of the boring bar 1 by the fixing bolt 8, and the boring work is performed by the blade 7. By setting the cleaning component 2, when the waste chips accumulated in the straight groove 9 are not easy to clean, the hexagon socket bolt 24 is screwed out from the fixing hole 26, and then the blocking block 21 can be taken out from the cleaning port 22 of the boring bar 1, and the clamping block 23 is moved out from the clamping slot 25. At this time, the straight groove 9 is in a through state, and an iron rod or the like can be used to extend into the straight groove 9, and the waste chips accumulated in the straight groove 9 are cleaned out of the straight groove 9 from the cleaning port 22, and then the blocking block 21 is installed into the cleaning port 22, by setting a cleaning component 2, it is convenient to clean the inside of the straight groove 9, so as to avoid the accumulation of waste chips in the straight groove 9 and affect the subsequent disassembly and replacement of the blade 7. By setting the slide post 6, the locking bolt 10 is screwed out from the second fixing hole 11 of the slide post 6, and then the slide post 6 can be pulled to slide in the fixed column 5. At the same time, the slider 12 at one end of the slide post 6 slides in the slide groove 13 of the fixed column 5. After the slide post 6 drives the boring rod 1 to move to an appropriate length, the locking bolt 10 is screwed into the corresponding second fixing hole 11 on the slide post 6 to achieve the effect of limiting and fixing the slide post 6. By setting the slide post 6, the boring rod 1 can be adjusted to different lengths, which is convenient for the blade 7 to perform boring work of different depths.

[0037] 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 back boring tool, comprising a boring bar, characterized in that: A stepped shaft is arranged on one side of the boring bar, a tapered handle is arranged on the other end of the stepped shaft, a straight groove is arranged in the boring bar, a blade is arranged in the straight groove, the blade and the boring bar are connected by a fixing bolt, and a cleaning assembly is arranged at the lower end of the straight groove.

2. A back boring tool according to claim 1, characterized in that: The cleaning assembly includes a sealing block, a cleaning port, a clamping block, a hexagon socket bolt, a clamping slot, a fixing hole and a groove, wherein a cleaning port is provided at the lower end of the straight groove, a sealing block is provided in the cleaning port, clamping blocks are provided at both ends of the sealing block, a clamping slot corresponding to the clamping block is provided at the lower end of the boring bar, the clamping block and the boring bar are connected by a hexagon socket bolt, a fixing hole corresponding to the hexagon socket bolt is provided in the clamping slot, and a groove corresponding to the hexagon socket bolt is provided at the lower end of the clamping block.

3. A back boring tool according to claim 2, characterized in that: After the blocking block enters the cleaning port, the side of the blocking block is in close contact with the inner wall of the cleaning port, and after the clamping block enters the clamping slot, the side of the clamping block is in close contact with the inner wall of the clamping slot.

4. A back boring tool according to claim 2, characterized in that: The clamping block is provided with a through hole corresponding to the hexagon socket bolt, the clamping block and the blocking block are a welded integral structure, and after the blocking block is installed, the side edge of the blocking block is flush with the side edge of the boring bar.

5. The back boring tool according to claim 1, characterized in that: A fixed column is arranged at one end of the stepped shaft near the boring rod, and a sliding column is arranged at one end of the boring rod near the fixed column. The sliding column and the fixed column are connected by a locking bolt, and a plurality of fixing holes corresponding to the locking bolts are arranged at both ends of the sliding column. A sliding block is arranged on one side of both ends of the sliding block, and a sliding groove corresponding to the sliding block is arranged inside the fixed column.

6. A back boring tool according to claim 5, characterized in that: Through holes are arranged at positions corresponding to the fixing columns and locking bolts, and the spacing between two adjacent fixing holes is the same. The sliding column and the boring bar as well as the fixing column and the stepped shaft are spot welded.

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