CN220445680U - High-precision small-diameter deep hole machining tool - Google Patents
High-precision small-diameter deep hole machining tool Download PDFInfo
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- CN220445680U CN220445680U CN202321797415.7U CN202321797415U CN220445680U CN 220445680 U CN220445680 U CN 220445680U CN 202321797415 U CN202321797415 U CN 202321797415U CN 220445680 U CN220445680 U CN 220445680U
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- 238000003754 machining Methods 0.000 title claims description 27
- 239000000498 cooling water Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003672 processing method Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The utility model provides a high-precision small-diameter deep hole processing tool, wherein one end of the head part of a boring bar is provided with a boring tool bit mounting structure, one end close to the boring tool bit mounting structure is provided with a guide sleeve in a positioning way through a shaft shoulder, the outer circle of the boring bar is provided with a plurality of mounting grooves which are uniformly distributed along the circumference and are close to the side where the guide sleeve is positioned, and the inside of each mounting groove is provided with a guide bar; the reamer comprises a reamer body, a reamer head mounting structure is arranged at one end of the head of the reamer body, a reamer cooling water structure is arranged at the center of the reamer body, and a reamer handle structure is arranged at one end of the tail of the reamer body. The processing tool and the processing method can well meet the high-precision deep hole processing requirement, so that the hole processing quality is well ensured, the requirement of high-precision hole boring processing on equipment precision is reduced, the problem of difficult tool adjustment of operators is solved, and the labor intensity of workers is reduced; in addition, the tool and the processing method can be popularized to other similar high-precision small-diameter deep hole processing.
Description
Technical Field
The utility model relates to a high-precision small-diameter deep hole machining tool, and belongs to the technical field of deep hole machining.
Background
A certain unit valve body needs to be processed with a phi 45 multiplied by 1100mm through hole, the hole tolerance phi 45 (+ 0.025/0), the finish degree is required to be Ra0.8, and the clearance between the phi 45 hole of the finished valve body and the valve core is required to be 0.02-0.03mm.
At present, the advanced and efficient process method for processing the deep hole mainly adopts gun drill or jet suction drill, is finished on a main shaft in-band cold boring machine or a special machine tool, and can finish the processing of holes with low general precision requirements, such as oil holes or bolt holes. The deep hole machining tool with high precision requirements cannot meet the requirements of dimensional tolerance and form and position tolerance.
The difficult point of processing of valve body hole:
1. the smoothness of the holes is high Ra0.8.
2. The form and position tolerance requires high straightness less than or equal to 0.01mm and roundness less than or equal to 0.005mm.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a high-precision small-diameter deep hole machining tool, which can well meet the requirements of high-precision deep hole machining, well ensure the hole machining quality, reduce the requirements of high-precision hole boring machining on equipment precision, solve the problem of difficult tool adjustment of operators and reduce the labor intensity of workers; in addition, the tool and the processing method can be popularized to other similar high-precision small-diameter deep hole processing.
In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the high-precision small-diameter deep hole machining tool comprises a boring bar for boring, wherein one end of the head of the boring bar is provided with a boring cutter head mounting structure, one end, close to the boring cutter head mounting structure, is provided with a guide sleeve in a positioning manner through a shaft shoulder, the outer circle of the boring bar is provided with a plurality of mounting grooves which are uniformly distributed along the circumference, the side, close to the guide sleeve, of the boring bar, the inside of the mounting grooves is provided with guide bars, the center part of the boring bar is provided with a boring cutter cooling water structure, and one end of the tail of the boring bar is provided with a boring bar handle structure;
the reamer comprises a reamer body, a reamer head mounting structure and a reamer cooling water structure, wherein the reamer body is used for reaming, the reamer head mounting structure is arranged at one end of the head of the reamer body, a positioning pin shaft is arranged on the reamer head mounting structure, the reamer cooling water structure is arranged at the center of the reamer body, and the reamer handle structure is arranged at one end of the tail of the reamer body;
the grinding core rod is used for grinding holes;
a test rod for testing the aperture is also included.
The guide sleeve is a nylon guide sleeve, and the outer circle size d of the guide sleeve is determined according to the size of a valve body pre-boring process hole;
the guide bar is made of hard miscellaneous tree or nylon material, and the outer circle dimension d1 of the guide bar is processed to the dimension of the valve body pre-boring process hole.
A plurality of stepped holes are formed in the guide bar at equal intervals, and the stepped holes are matched with the fastening bolts and fix the whole guide bar in the mounting groove; the tail end of the fastening bolt is matched with a blind hole of the bolt arranged in the mounting groove.
The boring cutter cooling water structure comprises a first central cooling water hole arranged at the central part of the boring rod, a first water outlet hole is communicated with the end part of the first central cooling water hole, and the first water outlet hole penetrates through the inside of the boring cutter head mounting structure in an inclined mode.
The boring bar handle structure comprises a boring bar tail handle, and a boring bar fastening groove is formed in the boring bar tail handle.
The reamer cooling water structure comprises a second central cooling water hole arranged at the central part of the reamer rod, a second water outlet hole is communicated with the end part of the second central cooling water hole, and the second water outlet hole penetrates through and is obliquely arranged on the side where the reamer head mounting structure is located.
The reamer handle structure comprises a reamer handle, and a reamer handle fastening groove is formed in the reamer handle.
The outer wall of the grinding core rod is provided with a diamond-shaped grinding groove, the tail part of the grinding core rod is provided with a grinding rod tail shaft, and the grinding rod tail shaft is provided with a first radial positioning hole.
The tail part of the inspection rod is provided with an inspection rod tail shaft, and a second radial positioning hole is processed on the inspection rod tail shaft.
The utility model has the following beneficial effects:
1. by adopting the cutter system, the cutter parameters are reasonably used, and the quality of the machined valve hole is approved by a user.
2. The self-made boring tool system solves the processing problem of high-precision deep holes which cannot be solved by the existing advanced gun drill or spray suction drill and advanced equipment, and solves the technical bottleneck.
3. The fixture is simple to manufacture, convenient and fast to clamp, stable in machining process and controllable in dimensional accuracy, and the finished product passes quality authentication.
4. By the design utility model of the cutter system, the hole machining quality is ensured, the requirement of high-precision hole boring machining on equipment precision is reduced, the problem of difficult cutter adjustment of operators is solved, and the labor intensity of workers is reduced. The tool design and the processing method can be popularized to other similar high-precision small-diameter deep hole processing.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a block diagram of the boring bar, guide sleeve and guide bar assembly of the present utility model.
Fig. 2 is a view A-A of fig. 1 in accordance with the present utility model.
FIG. 3 is an overall block diagram of a boring bar according to the present utility model.
Fig. 4 is a view B-B of fig. 3 in accordance with the present utility model.
Fig. 5 is a view showing the structure of the guide sleeve of the present utility model.
FIG. 6 is a block diagram of a guide bar according to the present utility model.
FIG. 7 is a view C-C of FIG. 6 in accordance with the present utility model.
Fig. 8 is a structural view of the reamer spindle of the present utility model.
FIG. 9 is a view showing the structure of the polishing plug according to the present utility model.
Fig. 10 is a view D-D of fig. 9 in accordance with the present utility model.
FIG. 11 is a diagram of a check rod configuration.
In the figure: the device comprises a guide sleeve 1, a shaft shoulder 2, a fastening bolt 3, a guide bar 4, a stepped hole 5, a mounting groove 6, a boring bar 7, a first central cooling water hole 8, a boring bar tail handle 9, a boring bar fastening groove 10, a first water outlet hole 11, a boring tool bit mounting structure 12, a bolt blind hole 13, a reamer tool bit mounting structure 14, a positioning pin 15, a second water outlet hole 16, a reamer bar 17, a second central cooling water hole 18, a reamer bar tail handle 19, a reamer bar fastening groove 20, a grinding groove 21, a grinding core rod 22, a grinding bar tail shaft 23, a first radial positioning hole 24, a checking bar 25, a checking bar tail shaft 26 and a second radial positioning hole 27.
Detailed Description
Embodiments of the present utility model will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-11, a high-precision small-diameter deep hole processing tool comprises a boring bar 7 for boring, wherein one end of the head of the boring bar 7 is provided with a boring cutter head mounting structure 12, one end, close to the boring cutter head mounting structure 12, is provided with a guide sleeve 1 through a shaft shoulder 2 in a positioning way, the outer circle of the boring bar 7 is provided with a plurality of mounting grooves 6 which are uniformly distributed along the circumference and are close to the side of the guide sleeve 1, the inside of the mounting grooves 6 is provided with guide bars 4, the center part of the boring bar 7 is provided with a boring cutter cooling water structure, and one end of the tail of the boring bar 7 is provided with a boring bar handle structure; the reamer comprises a reamer body, a reamer head mounting structure, a reamer cooling water structure and a reamer handle structure, and is characterized by further comprising a reamer rod 17 for reaming, wherein one end of the head of the reamer rod 17 is provided with the reamer head mounting structure 14, the reamer head mounting structure 14 is provided with a positioning pin shaft 15, the center part of the reamer rod 17 is provided with the reamer cooling water structure, and one end of the tail of the reamer rod 17 is provided with the reamer handle structure; also included is an abrasive core rod 22 for grinding holes; a test rod 25 for testing the aperture is also included. The processing tool and the processing method can well meet the high-precision deep hole processing requirement, so that the hole processing quality is well ensured, the requirement of high-precision hole boring processing on equipment precision is reduced, the problem of difficult tool adjustment of operators is solved, and the labor intensity of workers is reduced; in addition, the tool and the processing method can be popularized to other similar high-precision small-diameter deep hole processing. In the concrete processing process, boring is firstly carried out by adopting a boring bar 7, reaming is carried out by adopting a reamer bar 17, grinding is carried out by adopting a grinding core rod 22, and finally, the deep hole is inspected by adopting an inspection bar 25.
Furthermore, the guide sleeve 1 is a nylon guide sleeve, and the outer circle size d of the guide sleeve 1 is determined according to the size of the valve body pre-boring process hole. By adopting the guide sleeve 1, the guide purpose can be achieved, and the precision requirement in the boring process is further ensured.
Furthermore, the guide strip 4 is made of hard miscellaneous tree or nylon material, and the outer circle dimension d1 of the guide strip 4 is processed to the dimension of the valve body pre-boring process hole. The guide strip 4 can play a role in guiding and supporting, so that the precision requirement in the boring process is further ensured.
Further, a plurality of stepped holes 5 are formed in the guide bar 4 at equal intervals, and the stepped holes 5 are matched with the fastening bolts 3 and fix the whole guide bar 4 in the installation groove 6; the end of the fastening bolt 3 is matched with a blind bolt hole 13 arranged in the mounting groove 6. The fixing bolt 3 can be arranged in the guide bar 4 through the stepped hole 5, and the guide bar 4 can be reliably fixed in the mounting groove 6 through the fixing bolt 3.
Further, the boring cutter cooling water structure comprises a first central cooling water hole 8 arranged at the central part of the boring bar 7, a first water outlet hole 11 is communicated with the end part of the first central cooling water hole 8, and the first water outlet hole 11 penetrates through and is obliquely arranged in the boring cutter head mounting structure 12. The boring cutter cooling water structure is convenient for correspondingly cooling the boring bar 7 in the boring process, so that the normal processing process of the boring bar 7 is ensured.
Further, the boring bar handle structure comprises a boring bar tail handle 9, and a boring bar fastening groove 10 is formed in the boring bar tail handle 9. The boring bar handle structure can be used for normally clamping and fixing the boring bar 7.
Further, the reamer cooling water structure comprises a second central cooling water hole 18 arranged at the central part of the reamer rod 17, a second water outlet hole 16 is communicated with the end part of the second central cooling water hole 18, and the second water outlet hole 16 penetrates through and is obliquely arranged at the side of the reamer head mounting structure 14. The reamer cooling water structure can be used for cooling the reamer rod 17 in the machining process, so that the normal machining process of the reamer rod 17 is ensured.
Further, the reamer handle structure comprises a reamer handle 19, and a reamer handle fastening groove 20 is formed in the reamer handle 19. The reamer shank structure facilitates reliable and fixed installation of the reamer shank 17.
Further, a diamond-shaped grinding groove 21 is formed in the outer wall of the grinding core rod 22, a grinding rod tail shaft 23 is arranged at the tail of the grinding core rod 22, and a first radial positioning hole 24 is formed in the grinding rod tail shaft 23. The grinding core rod 22 can be used for grinding the deep hole, so that the surface smoothness of the deep hole is ensured.
Further, a tail shaft 26 of the checking rod is arranged at the tail of the checking rod 25, and a second radial positioning hole 27 is formed in the tail shaft 26 of the checking rod. The test rod 25 can be used to verify the size of the finished deep hole.
Example 2:
the method for deep hole machining by adopting the high-precision small-diameter deep hole machining tool comprises the following steps:
step one, clamping a workpiece:
clamping and aligning a workpiece, and aligning the center of a deep hole to be processed;
step two, pre-boring:
pre-boring holes in the holes, ensuring that the effective depth of the pre-boring holes is larger than 150mm, and recording the actual size;
step three, mounting the guide sleeve 1 and the guide bar 4:
machining the outer circle of the guide sleeve 1 according to the actual size of the pre-boring hole, and performing clearance fit with the pre-boring hole; the guide bar 4 is arranged in a boring bar 7, wherein the outer circle of the guide bar 4 is processed according to the actual size of the pre-boring hole, and the transition fit between the guide bar and the pre-boring hole is ensured;
boring:
adjusting a boring cutter, boring, and repeating the third step until the boring reaches the size before reaming;
step five, reaming processing:
sleeving a reamer, and reaming to the size before grinding by adopting a reamer rod 17;
step six, grinding processing:
after reaming is completed, coating grinding paste on the grinding core rod 22, and grinding Kong Baozheng to Ra0.8;
step seven, checking:
the inspection rod 25 is adopted to inspect the hole, so that the inspection rod 25 can smoothly pass through the hole.
Claims (9)
1. The high-precision small-diameter deep hole machining tool is characterized by comprising a boring bar (7) for boring, wherein one end of the head of the boring bar (7) is provided with a boring cutter head mounting structure (12), one end, close to the boring cutter head mounting structure (12), of the boring bar (7) is provided with a guide sleeve (1) in a positioning manner through a shaft shoulder (2), a plurality of mounting grooves (6) which are uniformly distributed circumferentially are machined on the outer circle of the boring bar (7) and close to the side of the guide sleeve (1), guide bars (4) are arranged in the mounting grooves (6), the center part of the boring bar (7) is provided with a boring cutter cooling water structure, and one end of the tail of the boring bar (7) is provided with a boring bar handle structure;
the reamer comprises a reamer body (17) for reaming, wherein a reamer head mounting structure (14) is arranged at one end of the head of the reamer body (17), a positioning pin shaft (15) is arranged on the reamer head mounting structure (14), a reamer cooling water structure is arranged at the center part of the reamer body (17), and a reamer handle structure is arranged at one end of the tail of the reamer body (17);
also comprises a grinding core rod (22) for grinding holes;
a test rod (25) for testing the aperture is also included.
2. The high precision small diameter deep hole machining tool according to claim 1, wherein: the guide sleeve (1) is a nylon guide sleeve, and the outer circle size d of the guide sleeve (1) is determined according to the size of a valve body pre-boring process hole;
the guide bar (4) is made of hard miscellaneous tree or nylon material, and the outer circle dimension d1 of the guide bar (4) is processed to the dimension of the valve body pre-boring process hole.
3. The high precision small diameter deep hole machining tool according to claim 1, wherein: a plurality of stepped holes (5) are formed in the guide bar (4) at equal intervals, and the stepped holes (5) are matched with the fastening bolts (3) and fix the whole guide bar (4) in the mounting groove (6); the tail end of the fastening bolt (3) is matched with a bolt blind hole (13) arranged in the mounting groove (6).
4. The high precision small diameter deep hole machining tool according to claim 1, wherein: the boring cutter cooling water structure comprises a first central cooling water hole (8) arranged at the central part of the boring rod (7), a first water outlet hole (11) is communicated with the end part of the first central cooling water hole (8), and the first water outlet hole (11) penetrates through the inside of the boring cutter bit installation structure (12) in an inclined mode.
5. The high precision small diameter deep hole machining tool according to claim 1, wherein: the boring bar handle structure comprises a boring bar tail handle (9), and a boring bar fastening groove (10) is formed in the boring bar tail handle (9).
6. The high precision small diameter deep hole machining tool according to claim 1, wherein: the reamer cooling water structure comprises a second central cooling water hole (18) arranged at the central part of a reamer rod (17), a second water outlet hole (16) is communicated with the end part of the second central cooling water hole (18), and the second water outlet hole (16) penetrates through and is obliquely arranged on the side where the reamer head mounting structure (14) is located.
7. The high precision small diameter deep hole machining tool according to claim 1, wherein: the reamer handle structure comprises a reamer handle tail handle (19), and a reamer handle fastening groove (20) is formed in the reamer handle tail handle (19).
8. The high precision small diameter deep hole machining tool according to claim 1, wherein: the outer wall of the grinding core rod (22) is provided with a diamond-shaped grinding groove (21), the tail of the grinding core rod (22) is provided with a grinding rod tail shaft (23), and the grinding rod tail shaft (23) is provided with a first radial positioning hole (24).
9. The high precision small diameter deep hole machining tool according to claim 1, wherein: the tail part of the checking rod (25) is provided with a checking rod tail shaft (26), and a second radial positioning hole (27) is formed in the checking rod tail shaft (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797415.7U CN220445680U (en) | 2023-07-10 | 2023-07-10 | High-precision small-diameter deep hole machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797415.7U CN220445680U (en) | 2023-07-10 | 2023-07-10 | High-precision small-diameter deep hole machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220445680U true CN220445680U (en) | 2024-02-06 |
Family
ID=89724411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321797415.7U Active CN220445680U (en) | 2023-07-10 | 2023-07-10 | High-precision small-diameter deep hole machining tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220445680U (en) |
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2023
- 2023-07-10 CN CN202321797415.7U patent/CN220445680U/en active Active
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