CN112916897B - Long service life's center is bored in installation stability - Google Patents
Long service life's center is bored in installation stability Download PDFInfo
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- CN112916897B CN112916897B CN202110253622.5A CN202110253622A CN112916897B CN 112916897 B CN112916897 B CN 112916897B CN 202110253622 A CN202110253622 A CN 202110253622A CN 112916897 B CN112916897 B CN 112916897B
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- 238000009434 installation Methods 0.000 title claims abstract description 49
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a center drill which is stable in installation and long in service life, and the center drill comprises an installation base, a motor box, a limiting block, a first sliding groove, a top rod, a first spring, a limiting groove, a second sliding groove, a first bearing, a connecting shaft, a second bearing, a first sleeve, an installation block, a limiting hole, a pushing block, a limiting rod, a second spring, a rack and a gear, wherein the installation base is provided with a first sliding groove; the central drill mounting fixture is simple in structure by matching the limiting block, the first sliding groove, the ejector rod, the first spring, the limiting groove, the second sliding groove, the first bearing, the connecting shaft and the second bearing, and the purpose of quickly mounting the central drill is achieved by rotating the central drill mounting fixture by 90 degrees; the first sleeve, the mounting block, the limiting hole, the pushing block, the limiting rod, the second spring, the rack and the gear are matched for use, so that the mounting stability and the stability of the central drill in use are improved; the invention has compact structure, reduces the influence of installation error on the service life of the center drill and prolongs the service life of the center drill.
Description
Technical Field
The invention relates to the technical field of center drills, in particular to a center drill which is stable in installation and long in service life.
Background
The center drill is a common cutter in machining, plays an important role in actual production, is mostly used for a lathe at the earliest and is used for drilling a center hole of a shaft part, along with the gradual popularization of automation, the center drill is more extensive in multifunctional numerical control equipment, and has the maximum function of drilling the center hole to ensure the machining position of the part hole, so that certain requirements are met for the installation and the use of some center drills in the market; however, the existing center drill is complex to install and disassemble, the working efficiency is affected, and the used clamping tool is not stable enough, so that the service life of the center drill is easily affected by installation errors; therefore, the invention provides a center drill which is stable to install and has long service life.
Disclosure of Invention
The invention aims to provide a center drill which is stable to mount and long in service life, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a center drill with stable installation and long service life comprises an installation base, an installation hole, a first hydraulic cylinder installation plate, a first hydraulic cylinder, a guide rail, a first connection plate, a second connection plate, a motor box, a limiting block, a first sliding chute, a top rod, a first spring, a limiting groove, a second sliding chute, a first bearing, a connection shaft, a second bearing, a motor, a connection block, a second hydraulic cylinder installation plate, a second hydraulic cylinder, a third connection plate, a first sleeve, an installation block, a second sleeve, a third sleeve, a center drill body, a limiting hole, a third sliding chute, a pushing block, a fourth sleeve, a limiting rod, a second spring, a limiting ring, a rack, a gear and a protective pad, wherein the first hydraulic cylinder installation plate is fixedly connected to the outer wall of one side of the first hydraulic cylinder installation plate, the guide rail is symmetrically and fixedly connected to the outer wall of one side of the installation base, the outer wall of one end of the first hydraulic cylinder output shaft is fixedly connected with a first connecting plate, the first connecting plate is connected to the outer wall of one side of the guide rail in a sliding manner, the outer wall of one side of the first connecting plate is fixedly connected with a second connecting plate, the outer wall of one side of the second connecting plate is connected with a motor box in a rotating manner, the outer wall of the top end of the motor box is fixedly connected with a limiting block, a first sliding groove is formed in the inner wall of one side of the limiting block in a penetrating manner, a push rod is connected to the inner wall of one side of the first sliding groove in a sliding manner, a first spring is sleeved on the inner wall of one side of the push rod, corresponding to the first sliding groove, on the outer wall of one side of the push rod, limiting grooves are symmetrically formed in the inner wall of the second connecting plate, one end of the push rod is connected to the inner wall of one side of the limiting grooves in a sliding manner, a second sliding manner is formed in the inner wall of one side of the second sliding groove, the inner wall of one side of the motor box is fixedly connected with a motor, the outer wall of one end of the motor output shaft is fixedly connected with a connecting block, the outer wall of one side of the motor box is fixedly connected with a second hydraulic cylinder mounting plate, the outer wall of one side of the second hydraulic cylinder mounting plate is fixedly connected with a second hydraulic cylinder, the outer wall of one end of the second hydraulic cylinder output shaft is fixedly connected with a third connecting plate, the outer wall of the bottom end of the third connecting plate is provided with a protective pad, the outer wall of one side of the connecting block is fixedly connected with a first sleeve, the inner wall of one side of the first sleeve is inserted with a center drill body, limiting holes are symmetrically distributed on the outer wall of one side of the center drill body, the outer wall of one end of the first sleeve is fixedly connected with an installation block, the outer wall of one side of the installation block is fixedly connected with a second sleeve, and the center drill body is sleeved on the outer wall of one side of the second sleeve, the installation structure comprises an installation block, a first sliding groove, a second sliding groove, a limiting rod, a rack and a pushing block, wherein the first sliding groove is symmetrically formed in the outer wall of one side of the installation block, the pushing block is connected to the inner wall of one side of the third sliding groove in a sliding mode, a fourth sleeve is fixedly connected to the inner wall of one side of the installation block, the limiting rod is inserted into the inner wall of one side of the fourth sleeve in a inserting mode, one end of the limiting rod is inserted into the inner wall of one side of the limiting hole in an inserting mode, the gear is connected to the inner wall of one side of the limiting rod in a rotating mode, a second spring is connected to the inner wall of one side of the fourth sleeve in a sleeved mode, a rack is connected to the inner wall of one side of the installation block in a sliding mode, one end of the rack is fixedly connected to the outer wall of one side of the pushing block, and the gear is connected to the outer wall of one side of the rack in a meshing mode.
According to the technical scheme, the outer wall of one side of the mounting seat is provided with the mounting holes in a penetrating manner.
According to the technical scheme, the first bearing is fixedly connected to the inner wall of one side of the second connecting plate, the connecting shaft is fixedly connected to the inner wall of one side of the first bearing, the second bearing is fixedly connected to the inner wall of one side of the motor box, and the second bearing is fixedly connected to the outer wall of one end of the connecting shaft.
According to the technical scheme, the outer wall of one side of the second sleeve is in threaded connection with the third sleeve.
According to the technical scheme, the limiting ring is fixedly connected to the inner wall of one side, corresponding to the fourth sleeve, of the outer wall of one end of the limiting rod.
According to the technical scheme, the outer wall of one side of the gear is connected to the outer wall of one side of the rack in a meshed mode, and the outer wall of the other side of the gear is connected to the outer wall of one side of the limiting rod in a meshed mode.
According to the technical scheme, the outer wall of one side of the third connecting plate is provided with the through hole in a penetrating mode, and the second sleeve is connected inside the through hole in a sliding mode.
Compared with the prior art, the invention has the following beneficial effects: the central drill mounting fixture is safe and reliable, the structure is simple by the matched use of the limiting block, the first sliding groove, the ejector rod, the first spring, the limiting groove, the second sliding groove, the first bearing, the connecting shaft and the second bearing, and the purpose of quickly mounting the central drill is realized by rotating the central drill mounting fixture by 90 degrees; the first sleeve, the mounting block, the second sleeve, the third sleeve, the limiting hole, the pushing block, the fourth sleeve, the limiting rod, the second spring, the rack and the gear are matched for use, so that the mounting stability and the stability of the central drill in use are improved, and the central drill is convenient to use; the second hydraulic cylinder, the third connecting plate and the protective pad are matched for use, so that the purposes of accurately adjusting and controlling the drilling depth of the central drill are achieved; the central drill has a compact structure, is convenient to use, reduces the influence of installation errors on the service life of the central drill, and prolongs the service life of the central drill.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view of the overall side cut-away construction of the present invention;
FIG. 3 is a schematic front view of a second connecting plate according to the present invention;
FIG. 4 is a schematic perspective view of a stationary bar according to the present invention;
FIG. 5 is an enlarged view of the structure of the area A in FIG. 2 according to the present invention;
FIG. 6 is a schematic perspective view of the core drill body of the present invention;
in the figure: 1. a mounting seat; 2. mounting holes; 3. a first hydraulic cylinder mounting plate; 4. a first hydraulic cylinder; 5. a guide rail; 6. a first connecting plate; 7. a second connecting plate; 8. a motor case; 9. a limiting block; 10. a first chute; 11. a top rod; 12. a first spring; 13. a limiting groove; 14. a second chute; 15. a first bearing; 16. a connecting shaft; 17. a second bearing; 18. a motor; 19. connecting blocks; 20. a second hydraulic cylinder mounting plate; 21. a second hydraulic cylinder; 22. a third connecting plate; 23. a first sleeve; 24. mounting blocks; 25. a second sleeve; 26. a third sleeve; 27. a central drill body; 28. a limiting hole; 29. a third chute; 30. a push block; 31. a fourth sleeve; 32. a limiting rod; 33. a second spring; 34. a limiting ring; 35. a rack; 36. a gear; 37. a protective pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a center drill with stable installation and long service life comprises an installation base 1, an installation hole 2, a first hydraulic cylinder installation plate 3, a first hydraulic cylinder 4, a guide rail 5, a first connection plate 6, a second connection plate 7, a motor box 8, a limiting block 9, a first sliding chute 10, a mandril 11, a first spring 12, a limiting groove 13, a second sliding chute 14, a first bearing 15, a connection shaft 16, a second bearing 17, a motor 18, a connection block 19, a second hydraulic cylinder installation plate 20, a second hydraulic cylinder 21, a third connection plate 22, a first sleeve 23, an installation block 24, a second sleeve 25, a third sleeve 26, a center drill body 27, a limiting hole 28, a third sliding chute 29, a push block 30, a fourth sleeve 31, a limiting rod 32, a second spring 33, a limiting ring 34, a rack 35, a gear 36 and a protective pad 37, wherein the first hydraulic cylinder 3 is fixedly connected to the outer wall of the top end of the installation base 1, the first hydraulic cylinder 4 is fixedly connected to the outer wall of one side of the first hydraulic cylinder installation plate 3, the outer wall of one side of the mounting seat 1 is symmetrically and fixedly connected with a guide rail 5, the outer wall of one end of an output shaft of the first hydraulic cylinder 4 is fixedly connected with a first connecting plate 6, the first connecting plate 6 is connected on the outer wall of one side of the guide rail 5 in a sliding manner, the outer wall of one side of the first connecting plate 6 is fixedly connected with a second connecting plate 7, the outer wall of one side of the second connecting plate 7 is rotatably connected with a motor box 8, the outer wall of the top end of the motor box 8 is fixedly connected with a limiting block 9, the inner wall of one side of the limiting block 9 is provided with a first sliding groove 10 in a through manner, the inner wall of one side of the first sliding groove 10 is connected with a mandril 11 in a sliding manner, the inner wall of one side of the mandril 11, which corresponds to the first sliding groove 10, is sleeved with a first spring 12, the inner wall of the second connecting plate 7 is symmetrically provided with a limiting groove 13, one end of the mandril 11 is connected on the inner wall of one side of the limiting groove 13 in a sliding manner, and a second connecting plate 7 is provided with a second sliding groove 14, the top rod 11 is connected with the inner wall of one side of the second chute 14 in a sliding manner, the inner wall of one side of the motor box 8 is fixedly connected with a motor 18, the outer wall of one end of an output shaft of the motor 18 is fixedly connected with a connecting block 19, the outer wall of one side of the motor box 8 is fixedly connected with a second hydraulic cylinder mounting plate 20, the outer wall of one side of the second hydraulic cylinder mounting plate 20 is fixedly connected with a second hydraulic cylinder 21, the outer wall of one end of an output shaft of the second hydraulic cylinder 21 is fixedly connected with a third connecting plate 22, the outer wall of the bottom end of the third connecting plate 22 is provided with a protective pad 37, the outer wall of one side of the connecting block 19 is fixedly connected with a first sleeve 23, the inner wall of one side of the first sleeve 23 is inserted with a central drill body 27, the outer wall of one side of the central drill body 27 is symmetrically distributed and provided with limiting holes 28, the outer wall of one end of the first sleeve 23 is fixedly connected with an installation block 24, the outer wall of one side of the installation block 24 is fixedly connected with a second sleeve 25, the central drill body 27 is sleeved on the outer wall of one side of the second sleeve 25, the outer wall of one side of the mounting block 24 is symmetrically provided with a third sliding chute 29, the inner wall of one side of the third sliding chute 29 is connected with a push block 30 in a sliding way, the inner wall of one side of the mounting block 24 is fixedly connected with a fourth sleeve 31, the inner wall of one side of the fourth sleeve 31 is inserted with a limit rod 32, one end of the limiting rod 32 is inserted into one side inner wall of the limiting hole 28, one side inner wall of the mounting block 24 is rotatably connected with a gear 36, one side outer wall of the limiting rod 32 corresponding to one side inner wall of the fourth sleeve 31 is sleeved with a second spring 33, one side inner wall of the mounting block 24 is slidably connected with a rack 35, one end of the rack 35 is fixedly connected to the outer wall of one side of the push block 30, the inner wall of one side of the mounting block 24 is rotatably connected with a gear 36, and the gear 36 is meshed and connected to the outer wall of one side of the rack 35; mounting holes 2 are distributed and penetrated on the outer wall of one side of the mounting seat 1, so that the mounting seat 1 can be conveniently mounted on a machine tool through the mounting holes 2; a first bearing 15 is fixedly connected to the inner wall of one side of the second connecting plate 7, a connecting shaft 16 is fixedly connected to the inner wall of one side of the first bearing 15, a second bearing 17 is fixedly connected to the inner wall of one side of the motor box 8, the second bearing 17 is fixedly connected to the outer wall of one end of the connecting shaft 16, and the first bearing 15, the connecting shaft 16 and the second bearing 17 are matched for use, so that the stable rotation of the motor box 8 is conveniently ensured; a third sleeve 26 is connected to the outer wall of one side of the second sleeve 25 in a threaded manner, and the third sleeve 26 is arranged to be convenient for being matched with the second sleeve 25 to install the central drill body 27 in the first sleeve 23; a limiting ring 34 is fixedly connected to the inner wall of one end of the limiting rod 32, which corresponds to the fourth sleeve 31; the arrangement of the limiting ring 34 is convenient for being matched with the second spring 33 to enable the limiting rod 32 to automatically reset; the outer wall of one side of the gear 36 is meshed and connected with the outer wall of one side of the rack 35, the outer wall of the other side of the gear 36 is meshed and connected with the outer wall of one side of the limiting rod 32, the pushing block 30 can drive the second spring 33 to compress conveniently through the matching use of the rack 35, the gear 36 and the limiting rod 32, the limiting rod 32 is separated from the limiting hole 28, a through hole is formed in the outer wall of one side of the third connecting plate 22 in a penetrating mode, the second sleeve 25 is connected to the inside of the through hole in a sliding mode, the central drill body 27 in the second sleeve 25 moves up and down relative to the third connecting plate 22, and the purpose of controlling the drilling depth of the central drill body 27 through the third connecting plate 22 is achieved; when the center drill with stable installation and long service life is used, the installation base 1 is installed on a machine tool manually through the installation hole 2, the ejector rod 11 is pushed, one end of the ejector rod 11 is separated from the limiting groove 13, the motor box 8 is rotated, the ejector rod 11 slides in the second sliding groove 14, the motor box 8 rotates 90 degrees, the center drill body 27 is inserted into the first sleeve 23, one end of the limiting rod 32 is limited in the limiting hole 28 under the cooperation of the second spring 33, the third sleeve 26 is rotated, the center drill body 27 is stably fixed in the first sleeve 23, the ejector rod 11 is pushed again, one end of the ejector rod 11 is separated from the limiting groove 13, the motor box 8 is rotated, the ejector rod 11 slides in the second sliding groove 14, the motor box 8 rotates 90 degrees, and quick installation of the center drill body 27 is achieved; when the device is used, the second hydraulic cylinder 21 is started to drive the third connecting plate 22 to move up and down, the distance between the third connecting plate 22 and the drill bit of the central drill body 27 is adjusted, and the purpose of accurately controlling the drilling depth of the central drill body 27 is achieved; when the central drill body 27 needs to be replaced and maintained, the third sleeve 26 is rotated to separate the third sleeve 26 from the second sleeve 25, the push block 30 is manually pushed to drive the rack 35 to move, the gear 36 is driven to rotate under the action of the rack 35, the limiting rod 32 and the limiting hole 28 are driven under the action of the gear 36, the limiting rod 32 is loosened to limit the central drill body 27, and the central drill body 27 is taken out.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a long service life's center is bored in installation stability, including mount pad (1), mounting hole (2), first pneumatic cylinder mounting panel (3), first pneumatic cylinder (4), guide rail (5), first connecting plate (6), second connecting plate (7), motor case (8), stopper (9), first spout (10), ejector pin (11), first spring (12), spacing groove (13), second spout (14), first bearing (15), connecting axle (16), second bearing (17), motor (18), connecting block (19), second pneumatic cylinder mounting panel (20), second pneumatic cylinder (21), third connecting plate (22), first sleeve (23), installation piece (24), second sleeve (25), third sleeve (26), center bores body (27), spacing hole (28), third spout (29), ejector pad (30), Fourth sleeve (31), gag lever post (32), second spring (33), spacing ring (34), rack (35), gear (36) and protection pad (37), its characterized in that: the hydraulic cylinder fixing device is characterized in that a first hydraulic cylinder mounting plate (3) is fixedly connected to the outer wall of the top end of the mounting seat (1), a first hydraulic cylinder (4) is fixedly connected to the outer wall of one side of the first hydraulic cylinder mounting plate (3), guide rails (5) are symmetrically and fixedly connected to the outer wall of one side of the mounting seat (1), a first connecting plate (6) is fixedly connected to the outer wall of one end of an output shaft of the first hydraulic cylinder (4), the first connecting plate (6) is slidably connected to the outer wall of one side of the guide rails (5), a second connecting plate (7) is fixedly connected to the outer wall of one side of the first connecting plate (6), a motor box (8) is rotatably connected to the outer wall of one side of the second connecting plate (7), a limiting block (9) is fixedly connected to the outer wall of the top end of the motor box (8), and a first sliding chute (10) is formed in a penetrating manner on the inner wall of one side of the limiting block (9), a top rod (11) is connected to the inner wall of one side of the first sliding groove (10) in a sliding manner, a first spring (12) is sleeved on the inner wall of one side of the top rod (11) corresponding to the first sliding groove (10), limiting grooves (13) are symmetrically formed in the inner wall of the second connecting plate (7), one end of the top rod (11) is connected to the inner wall of one side of the limiting grooves (13) in a sliding manner, a second sliding groove (14) is formed in one side of the inner wall of one side of the second connecting plate (7) corresponding to the limiting grooves (13), the top rod (11) is connected to the inner wall of one side of the second sliding groove (14) in a sliding manner, a motor (18) is fixedly connected to the inner wall of one side of the motor box (8), a connecting block (19) is fixedly connected to the outer wall of one end of an output shaft of the motor (18), and a second hydraulic cylinder mounting plate (20) is fixedly connected to the outer wall of one side of the motor box (8), a second hydraulic cylinder (21) is fixedly connected to the outer wall of one side of the second hydraulic cylinder mounting plate (20), a third connecting plate (22) is fixedly connected to the outer wall of one end of an output shaft of the second hydraulic cylinder (21), a protective pad (37) is arranged on the outer wall of the bottom end of the third connecting plate (22), a first sleeve (23) is fixedly connected to the outer wall of one side of the connecting block (19), a central drill body (27) is spliced to the inner wall of one side of the first sleeve (23), limiting holes (28) are symmetrically distributed on the outer wall of one side of the central drill body (27), a mounting block (24) is fixedly connected to the outer wall of one end of the first sleeve (23), a second sleeve (25) is fixedly connected to the outer wall of one side of the mounting block (24), the central drill body (27) is sleeved to the outer wall of one side of the second sleeve (25), third sliding grooves (29) are symmetrically formed in the outer wall of one side of the mounting block (24), a pushing block (30) is connected to the inner wall of one side of the third sliding groove (29) in a sliding manner, a fourth sleeve (31) is fixedly connected to the inner wall of one side of the mounting block (24), a limiting rod (32) is inserted into the inner wall of one side of the fourth sleeve (31), one end of the limiting rod (32) is inserted on the inner wall of one side of the limiting hole (28), the inner wall of one side of the mounting block (24) is distributed and rotatably connected with a gear (36), a second spring (33) is sleeved on the inner wall of one side of the outer wall of one side of the limiting rod (32) corresponding to the fourth sleeve (31), racks (35) are distributed and connected on the inner wall of one side of the mounting block (24) in a sliding way, one end of the rack (35) is fixedly connected to the outer wall of one side of the push block (30), the inner wall of one side of the mounting block (24) is rotatably connected with a gear (36), and the gear (36) is meshed and connected with the outer wall of one side of the rack (35).
2. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: and the outer wall of one side of the mounting seat (1) is distributed and penetrated with mounting holes (2).
3. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: fixedly connected with first bearing (15) on the inner wall of one side of second connecting plate (7), fixedly connected with connecting axle (16) on the inner wall of one side of first bearing (15), fixedly connected with second bearing (17) on the inner wall of one side of motor case (8), and second bearing (17) fixed connection is on the one end outer wall of connecting axle (16).
4. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: and a third sleeve (26) is in threaded connection with the outer wall of one side of the second sleeve (25).
5. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: and a limiting ring (34) is fixedly connected to the inner wall of one side of the outer wall of one end of the limiting rod (32) corresponding to the fourth sleeve (31).
6. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: the outer wall of one side of the gear (36) is meshed and connected to the outer wall of one side of the rack (35), and the outer wall of the other side of the gear (36) is meshed and connected to the outer wall of one side of the limiting rod (32).
7. The center drill of claim 1, wherein the center drill is stable in installation and long in service life, and is characterized in that: a through hole is formed in the outer wall of one side of the third connecting plate (22) in a penetrating mode, and the second sleeve (25) is connected inside the through hole in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110253622.5A CN112916897B (en) | 2021-03-09 | 2021-03-09 | Long service life's center is bored in installation stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110253622.5A CN112916897B (en) | 2021-03-09 | 2021-03-09 | Long service life's center is bored in installation stability |
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| CN112916897A CN112916897A (en) | 2021-06-08 |
| CN112916897B true CN112916897B (en) | 2022-03-11 |
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| CN112916897A (en) | 2021-06-08 |
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Address after: No.8, Dongqiang Road, Xindong industrial cluster, Xinxiang City, Henan Province Patentee after: Henan Heyi Precision Tools Co.,Ltd. Country or region after: China Address before: No.8, Dongqiang Road, Xindong industrial cluster, Xinxiang City, Henan Province Patentee before: HENAN YIGONG DRILLING INDUSTRY CO.,LTD. Country or region before: China |